Method for preparing concave corner in packaging structure

Abstract

The invention relates to the technical field of food packaging, in particular to a method for preparing a concave corner in a packaging structure. Firstly, at least two to-be-machined cylindrical blanks are arranged side by side in the same posture; or loading the cylindrical blank to a processing trolley with a convex angle in the same posture; correspondingly contacting or connecting two to-be-formed convex angle and concave angle areas on any two adjacent cylindrical blanks, or attaching at least two processing trolleys with the same posture to each other; and then, when the two are folded, the convex corner of one package or the convex corner of the processing trolley is embedded into the concave corner to be formed, and the concave corner is formed through sealing. Compared with the prior art, the to-be-formed concave angles on the package do not need to be machined one by one, and the shape of the concave angles is automatically formed and forced.

Description

Technical Field

[0001] The invention relates to the technical field of food packaging, and in particular to a method for preparing a concave corner in a packaging structure. Background Art

[0002] The existing technology for making packaging structures with concave corners, such as the processing method for making roof-type packaging, requires external force interference on the concave corner areas to be formed on the packaging one by one to make them present a pre-formed concave corner state that is slightly concave inward. The processing process is cumbersome, so this packaging structure cannot be processed more quickly, and the yield cannot be compared with the yield of the existing technology for making square bricks with rapid processing equipment.

[0003] In summary, providing a method for quickly and effectively preparing concave corners in a packaging structure is one of the technical problems to be solved by the present application. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a method for preparing a concave corner in a packaging structure.

[0005] The objective of the present invention is achieved in the following manner: a method for preparing a concave corner in a packaging structure, characterized in that: S1, at least two tubular blanks to be processed are arranged side by side in the same posture; or the tubular blanks are loaded onto a processing cart with a convex corner in the same posture; S2, two areas of the convex corner and the concave corner to be formed on any two adjacent tubular blanks are contacted or connected correspondingly, or at least two processing carts in the same posture are placed close to each other; S3, when the two are folded, the convex corner of one package or the convex corner of the processing cart is embedded in the concave corner to be formed, and sealed to form the concave corner. Furthermore, at least two processing carts with convex corners are moved in the same posture along the same track, and the cylindrical blank is loaded onto the processing cart; when running in the first speed zone of the track, the two processing carts maintain a distance between them and are used to load the cylindrical blank onto the processing cart; when running in the second speed zone of the track, the two processing carts are close together, so that the convex corner of the processing cart is embedded in the concave corner to be formed to form a pre-formed concave corner structure; and then sealed to form the concave corner. Furthermore, a sealing surface with a concave angle is first made and then filled, and then the remaining sealing surface is sealed; or the sealing areas on both sides of the preformed concave angle structure are brought close to each other by two baffles close to each other; or the preformed concave angle structures of multiple packaging structures are sealed simultaneously or continuously. Furthermore, the flat blank is pushed to the loading module to form a cylindrical blank, which is then loaded onto a processing trolley. The trolley is located on a track with two speed zones and moves. The trolleys move at a certain distance in the faster running area. The cylindrical blank is loaded at the loading module and then enters the slower running area, so that the convex corner of the processing trolley is pressed on the area of ​​the previous concave corner to be formed, and this area is tilted into the package. It is then restricted and pushed by the baffles on the left and right sides of the track, so that the sealing areas on both sides of the concave corner are close to each other. Finally, the packaging structure is formed by sealing multiple packages continuously or at one time. Furthermore, it includes a continuous track, on which a trolley runs, and has at least two different speed zones. The faster speed zone is used to carry the trolley forward, and the slower speed zone is used to stack the trolleys. The trolley has a component for forming an angle, which cooperates with the position of the angle to be formed on the material and is in the same direction as the track. Furthermore, the processing trolley has a module that can be used for support, and also has at least one component with an angle that protrudes forward. The posture of each processing trolley is consistent, and the position of the component is determined according to the number of inner corners of the package that needs to be processed. For example, when processing a package with a single concave angle, this component can be set in front of the travel direction, with the convex angle facing the concave angle area of ​​the cylindrical blank loaded on the previous processing trolley, and the bottom of all components is installed on the chassis of the processing trolley. The traction mechanism pulls the chassis to move on the track. When it is pulled to the slow second track area, the speed is slowed down, or the trolley is directly pushed into the track area without traction, so that all the processing trolleys piled on each other in the second track area move forward as a whole, and the frontmost processing trolley is pushed away from the second track area to enter the first track area or other track areas of the circular track to continue traction; For processing double concave angle packaging, the first processing trolley only has a supporting module, while the second processing trolley adjacent to it has a component with convex angles on both sides, and the direction of the angles is consistent with the travel direction, facing the concave angle area of ​​the tubular blank loaded on the previous processing trolley. Similarly, the first and second processing trolleys travel on the first speed zone at a certain interval and add tubular blanks, and are stacked on each other on the track in the second speed zone. The first and second processing trolleys are combined into a group, and there are other groups of processing trolleys located before and after them.

[0006] The following content is used as a technical reference, but does not limit the scope of application of this method. This solution can actually prepare existing technologies. A packaging structure, the packaging structure is formed by folding a single piece of packaging structure sheet. Further, the packaging structure has a corner formed by curling or folding, which is a concave corner concave inward or a convex corner convex outward.

[0007] Furthermore, the corners include conical angles or flat angles, which are divided into concave angles and convex angles; the concave angles are recessed inward, and are inner folded angles or inserted angles, which are used to accommodate corners of other packaging bodies, or to set openings to provide a way to open the packaging from the concave corners; the convex angles protrude outward, and are conical angles or outer folded angles, which are used to set openings.

[0008] Furthermore, the packaging structure further comprises an opening structure of a preset shape, the whole or a part of the opening structure is located at the corner, and / or the opening structure is assisted by the corner to open; The packaging sheet is a single layer material or a laminated material formed by combining multiple layers of materials; the opening structure includes an opening and a sealing structure; The opening is an area of ​​a preset shape defined by a tear line and / or a through hole on at least one material layer of the packaging sheet; the area at least includes a partial corner sealing area and / or a lower corner surface; The sealing structure is a part of the packaging sheet covering the opening area, or an independent covering structure that is not connected to the packaging sheet; before the sealing structure is destroyed, the opening is in a sealed state.

[0009] Further, the corner is a convex corner, and the opening structure is at least located in the convex corner sealing area, that is, at least the sealing structure located in the convex corner sealing area is removed to form an opening at least located on the top surface of the corner, and / or, The corner is a convex corner, and at least a part of the sealing structure of the opening structure is located at the vertex position of the outer folded corner. When the sealing structure is removed, the sucking opening can be formed.

[0010] Furthermore, the external sealing structure located at the outer corner is a wrapping sleeve formed by folding, or is an inner corner of another packaging structure, that is, the outwardly convex corner is wrapped by the external sealing structure, and the opening structure can be destroyed by pulling the external sealing structure; and / or The unconnected area on the outer corner is the sanitary area where the sucking port contacts the mouth.

[0011] Further, the corner is a concave corner or an outward folded corner, a tear line is provided at the sealing structure, at least a portion of the tear line is located on the surface of the corner and the top surface of the packaging structure, and after the tear line is broken, the top surface of the packaging structure is separated from the position of the corner to form an opening; and / or A handle area is provided on the sealing structure, and a handle is provided in the handle area, and the handle is a component protruding from the top surface.

[0012] Furthermore, the corner is an outer folded angle, the opening structure is located at the lower angle surface, the outer folded angle can be folded and attached to the side wall, and the opening structure is connected to the side wall so as to destroy the hidden opening structure by lifting the outer folded angle, and / or the opening structure is connected to the side wall through a tear guide portion, the tear guide portion is a tear guide piece in a folded state, the opening direction of the tear guide portion is toward the direction of the intersection of the outer folded angle and the side wall, the tear guide portion includes a first tear guide piece and a second tear guide piece connected to the first tear guide piece, the first tear guide piece is bonded to the side wall, and the second tear guide piece is bonded to the sealing structure.

[0013] Furthermore, it also includes a one-way pouring structure provided on the inner wall and used to cover the pouring outlet, wherein the one-way pouring structure allows the beverage in the packaging structure body to be poured out from the pouring outlet and prevents external air from entering the inner cavity of the packaging structure body; the one-way pouring structure includes: The first material layer is fixedly connected to the inner wall of the inner layer structure and is provided with a through hole, wherein the through hole is used to allow the beverage in the packaging structure body to flow to the pouring outlet; A second material layer is provided between the first material layer and the inner wall and is used to prevent external air from entering the inner cavity of the packaging structure body; The first material layer and the second material layer are two material layers, or the same material layer is folded into a double-layer structure with different lengths.

[0014] Further, the corner is an outer corner, and the opening structure includes the entire outer corner and the outer corner sealing area, so as to completely separate the outer corner to form a pouring spout, or, The top surface of the corner having the opening has longitudinal scoring to assist in forming the pour spout, or, The flat outer corner edge is partially sealed and a cut is provided in the sealing area so that the package can be torn open through the cut, or, The upper and lower sides of the flat outer corners are partially sealed, and holes are punched in the sealed areas to form pull rings and handles.

[0015] Furthermore, the packaging structure has a concave corner on the upper part, which is located on the other side of the convex corner and can be embedded in the convex corner; and / or the convex corner can be covered or connected by the concave corner of another packaging structure, so that more than two packages can be neatly arranged or connected, and more than two packaging structures with convex corners can be matched with each other.

[0016] Furthermore, the packaging structure is one of the following three: S1. The top of the packaging structure is in the shape of a roof, and the convex corner protrudes from the side wall and is in the shape of a triangular pyramid; S2, the top of the packaging structure is a quadrilateral, and the convex corners are flat and outwardly folded; S3. The bottom surface of the packaging structure is a quadrilateral. As it gradually extends upward, its cross-sectional area gradually decreases. When it extends to the uppermost end, it is linear. When viewed from the front, it is trapezoidal, that is, it has oblique convex corners.

[0017] Furthermore, the corner is a concave corner, and the folding line of the corner sealing area of ​​the concave corner is not covered by the main sealing area, so that the package can be opened through the concave corner without being hindered by the crease line, and the package is a pillow-type package or an upright package; or the opening structure includes at least an inner folding line of the corner sealing area of ​​the concave corner, so that the sealing area of ​​the concave corner can be pried open and the inner folding line can be destroyed to continue breaking along the top sealing area to open the top of the package.

[0018] Furthermore, the packaging structure has an opening, and the inner wall of the packaging has a connected built-in layer, and the built-in layer is used to form a cavity to isolate or accommodate built-in accessories, or to form a straw structure.

[0019] Furthermore, the inner layer is curled into an arch or tubular shape and connected to the inner wall of the package to form a straw structure together. The inner layer has at least two layers of material, wherein the material layer providing support performance is partially hollowed out, and the other film layer at least covers the hollowed-out position, so that the inner layer that forms a straw structure after bending can be bent, and the user can take out the upper part of the straw through the opening.

[0020] Furthermore, the accessories are straws, soup spoons, forks, and chopsticks; the inner layer covers at least the opening position, and the straw is specifically a bendable straw or a telescopic straw. The lower end of the bendable straw or the telescopic straw is not covered by the cavity and is fixed to the inner wall of the package. The upper part of the telescopic straw or the upper part and the bendable part of the bendable straw are accommodated by the cavity, and the upper part of the bendable straw extends toward the inner top surface of the packaging structure, and the upper part of the straw can be taken out for use by opening the opening.

[0021] Furthermore, the accessory is arranged non-parallel to the ribs of the packaging structure, that is, arranged obliquely toward the bottom corner of the packaging, so that the straw is easier to suck, or the accessory can be designed to be longer, or Part of the accessory is arranged in the same direction as the opening structure and is connected to the accessory so that the accessory can be taken out by pulling the opening structure.

[0022] Furthermore, the accessory is a condiment, and the packaging structure can be a sealed package or a non-sealed outer package. The cavity formed by the inner layer is a sealed structure. The inner layer can be destroyed so that the condiment can fall into the package contents for seasoning or brewing, or the outer shell packaging can be placed flat on the table and the opening structure can be opened to dip the condiment for use.

[0023] Furthermore, the packaging body is provided with an inner corner structure, at least a part of the inner corner structure is connected to the built-in layer, and the built-in layer is torn open by flipping the flat inner corner structure, so that the built-in cavity is destroyed without destroying the sealing structure; or the packaging body is provided with an inner corner structure, and the built-in layer is located below the inner corner, and the built-in layer is squeezed by the inner corner to destroy the cavity, so that the solution in the cavity falls into the contents.

[0024] Furthermore, at least one side of the packaging structure has three vertices and at least one vertical surface.

[0025] Furthermore, the packaging structure is formed by folding the packaging structure sheet, and the surface with three vertices is the top surface and / or the upright surface, and the upright surface is at least perpendicular to one surface; the sealing surface of the packaging structure includes the top surface and the bottom surface; it has angles, including flat angles and non-flat angles, which can be set concave or convex toward the packaging structure, and also has a curved surface or an inclined surface.

[0026] Furthermore, the face with three vertices is a vertical face, and is composed of three vertices of non-flat angles that are concave inwards; the bottom surface of the packaging structure is a quadrilateral, which gradually tapers upwards to form a line, and its front view is a trapezoid, that is, the opposite side of the vertical face has a non-flat angle that is obliquely convex outwards.

[0027] Further, the inwardly concave non-flat corner may be embedded in the outwardly convex non-flat corner, or, The convex non-flat corner can be covered or connected by the concave non-flat corner of another packaging structure, so that more than two packages can be neatly arranged or connected, and more than two packaging structures with convex corners can be matched.

[0028] Furthermore, the upright surface of the packaging structure is a quadrilateral, and the surface with three vertices is the top surface; the bottom edge of the top surface has a connected flat angle, and the angle between the two sides of the flat angle is less than 90 degrees.

[0029] Furthermore, the opposite side of the vertical surface has a non-flat angle, the side vertex of the angle is located on the top surface and folded inward or outward; the side bottom edge of the non-flat angle is colinear or non-colinear with the bottom surface edge.

[0030] Furthermore, the opposite side of the upright surface has a longitudinally arranged flat angle, the side vertex of the angle is located on the top surface and is folded inwards or outwards; and / or The flat corners folded outward and arranged longitudinally are sealed and cut to form handles, and the packaging structure is opened through the flat corners or the top sealing area to form a pot-shaped package with a handle.

[0031] Furthermore, the packaging structure is a triangular prism, the bottom surface is a triangular surface, and the quadrilateral vertical surface can be used as the bottom surface for transportation and use; and / or the opposite side of the vertical surface of the packaging structure in the shape of a triangular prism has an integrally formed functional area structure, which can be used as a handle, or the interlayer is used for sealing accessories; and / or The opposite side edges of the vertical surface of the triangular prism can have openings.

[0032] Furthermore, the packaging structure is a triangular prism with a triangular bottom surface, and the quadrilateral upright surface can be used as the bottom surface for transportation and use. The opposite side of the upright surface of the packaging structure has an integrally formed functional area structure for setting as a handle. The opposite side ribs of the upright surface of the triangular prism have openings, and the packaging structure is a packaging structure bag.

[0033] Furthermore, the bottom surface of the packaging structure is a quadrilateral, which tapers upward to form a surface with three vertices, and its front view is a trapezoid, that is, the opposite side of the vertical surface also has a surface with three vertices, which is a convex angle, or The bottom surface of the packaging structure is a quadrilateral, and the top surface is tapered upward to form three vertices that are inclined obliquely, and the opposite side of the upright surface also has a surface with three vertices, which is a convex angle.

[0034] Furthermore, at least one side tapers toward the opposite side, and the packaging structure has an oblique opening and / or an oblique fluid channel, that is, an opening structure for opening is provided on the convex corner, or the top surface is unsealed to form an oblique opening.

[0035] Furthermore, the packaging structure is composed of structural lines forming the supporting ridges of the vertical surface and the bottom surface, and the remaining area is divided by decorative lines, and the decorative lines include imaginary lines and / or trace lines, the imaginary lines are the bending axes that make the flat packaging sheet bend into a curved surface, and the trace lines are the ridges that make the flat packaging sheet bend into multiple surfaces; By partially or completely reducing the traces, at least two surfaces or areas are merged into a continuous surface and bent into a curved surface with an imaginary line; or by adding additional traces, a curved surface is split into at least two surfaces, or a plane is split to meet the needs of appearance and design.

[0036] A packaging sheet material used for making the above-mentioned packaging structure is an integral structure, wherein the vertical surface and the bottom surface are divided by structural lines and used to constitute the supporting ridges thereof, and the remaining areas are divided by decorative lines, wherein the decorative lines include imaginary lines and indentation lines, wherein the imaginary lines are the bending axes for making the flat packaging sheet material bend into a curved surface, and the indentation lines are the ridges for making the flat packaging sheet material bend into multiple surfaces; and the decorative line has at least one corner area for bending into a non-flat angle, or has at least one triangular top surface area.

[0037] Furthermore, the corner region at least includes a triangular bottom surface and two side edges thereof that are distributed and connected to the corner top surface region, or the side edges of the corner region are curved lines that bulge outwards toward the corner region.

[0038] A packaging structure group including the above-mentioned packaging structure includes multiple packaging structures fixed in series, at least one of the packaging structures is a packaging structure as claimed in claim 2, and when two adjacent packaging structures are connected, the convex corner of one packaging structure is embedded in the concave corner of the other packaging structure.

[0039] Furthermore, when the concave angle of the packaging structure is a flat angle, the embedded convex angle is also a flat angle; or, when the concave angle of the packaging structure is a tapered angle, the embedded convex angle is a tapered angle matching its shape.

[0040] A method for preparing a packaging structure group, according to the order of steps S1, S2, and S3, or according to the order of steps S2, S1, and S3, specifically: S1. The bottom surfaces of at least two tubular blanks are sealed so that each tubular blank is a fillable packaging blank; S2, arranging at least two tubular blanks in the same posture side by side, and correspondingly contacting or connecting two regions of the convex corner and the concave corner to be formed on any two adjacent tubular blanks, so that these tubular blanks become a blank group; S3, filling the blank group obtained in step S1 or step S2, and sealing the top sealing area to form a packaging structure, that is, obtaining a packaging structure, and any two adjacent packaging structures are connected by a mutual interlocking structure; The "lower bottom surface" in step S1 is the bottom surface during filling, the real lower bottom surface of the packaging structure, or the upper bottom surface of the packaging structure.

[0041] Furthermore, in step S2, the two areas of the convex corner and the concave corner to be formed are tilted according to the packaging structure described in claim 34 through external force interference.

[0042] A packaging structure having a concave corner and an opposite side having a convex corner, or, A packaging structure with concave corners used to hold solid particles, semi-liquid and semi-granular liquid food, or semi-solidified contents.

[0043] A method for preparing a concave corner in a packaging structure, comprising: S1. Arrange at least two tubular blanks to be processed in the same posture side by side; or load the tubular blanks in the same posture onto a processing trolley with convex corners.

[0044] S2, contacting or connecting two areas of the convex corners and concave corners to be formed on any two adjacent tubular blanks correspondingly, or placing at least two processing carriages in the same posture close to each other; S3. When the two are folded, the convex corner of one of the packages or the convex corner of the processing cart is embedded in the concave corner to be formed, and the concave corner is formed by sealing.

[0045] Further, at least two processing carriages with convex corners are moved along the same track in the same posture, and the cylindrical blank is loaded onto the processing carriages; When the track is running in the first track area, the two processing trolleys are running with a spacing between them, and at this time, the cylindrical blanks are loaded onto the processing trolleys; When the track is running in the second track area, the two processing carriages are close together, so that the convex corners of the processing carriages are embedded in the concave corners to be formed to form a pre-formed concave corner structure; and then they are sealed to form the concave corners. Further, a sealing surface with a concave angle is first produced, then filling is performed, and then the remaining sealing surface is sealed; or The sealing areas on both sides of the preformed concave corner structure are brought closer to each other by two baffles 608 that are brought closer to each other; or The preformed reentrant structures of a plurality of packaging structures are sealed simultaneously or successively.

[0046] Compared with the prior art, the technical effects of this application include: 1. The packaging structure can be processed with an inner folded corner. The packaging structure with an inner folded corner allows users to open the package from the inner folded corner, thereby providing users with an alternative to cutting the package. By opening the seal from the inner folded corner, the main seal of the packaging structure can be completely unsealed without tools, which is convenient and labor-saving, or a reusable pouring spout can be opened. When this packaging is used to hold products that are semi-solid after cooling, such as pre-prepared food products, compared to the prior art packaging with aluminum foil as the upper sealing area, which requires repeated folding and then tearing off the entire main sealing area to open, the complete upper sealing area can be unsealed in one step through the inner folded corner, which will not generate additional garbage and can open the entire upper sealing opening in one step, which is more labor-saving and convenient, and caters to the consumption needs of consumers. When this packaging is used to hold semi-liquid and semi-granular liquid food products, such as eight-treasure porridge and other products, compared to the prior art, the traditional eight-treasure porridge can packaging products are more labor-saving and convenient in terms of transportation costs. Under the same space conditions, a square package can certainly hold a larger volume than a cylindrical package. In terms of packaging function, the opening of this package is an oblique opening, which not only has a larger opening cross-section, but also is more conducive to pouring out the contents. From an environmental protection perspective, if the inner wall of this package has a cavity for isolating and storing accessories such as soup spoons, compared with can packaging, it can reduce the generation of a plastic cover for holding a soup spoon. When using this package to hold solid granular products, such as cumin, spices and other condiments, compared with existing glass bottle packaging or soft packaging, the outer wall of the package is more spacious and has a larger opening cross-section, which is more convenient for pouring out the contents. When going out for a picnic, the package can be opened by pulling out the inner corner to form a small oblique opening for pouring. It can stand on the table like a glass bottle and be as light as a soft package. Moreover, if the customer has not used up all the liquid, he can put the inner corner of the package back into the package to form a moisture-proof semi-closed package, which is convenient for reuse next time and has the characteristic of multiple uses. When the package is used to hold liquid products, such as milk and other beverages, you can choose to pull out the inner corner to form a small opening, or open the entire upper seal through the inner corner. These two opening methods of the inner corner The style can give customers more choices of opening methods, and there are other embodiments of the packaging opening methods, such as the opening on the inner side of the outer corner opposite to the inner corner, which can realize one-step opening of the folded corner to drive the packaging opening to break, which is labor-saving and simple. In addition, for the packaging with a single inner corner, the top of the packaging is an oblique opening, which makes the outer corner opposite to the inner corner larger, which is conducive to the setting of the side pouring port. There is also an embodiment of a built-in straw located at the inner corner, which can ensure the integration of garbage and reduce the harm of straws to the environment. It also has the function of re-storing straws to achieve the hygiene problem of multiple uses.

[0047] 2. A packaging structure, comprising a packaging body for holding beverages, wherein the packaging body is provided with an outward-turned folded corner, and further, the packaging structure also comprises a pouring spout and a sealing portion, wherein the pouring spout is provided on the outward-turned folded corner, and the pouring spout is used to pour out the beverage in the packaging body; and the sealing portion is provided on the outward-turned folded corner, and the sealing portion is used to cover and seal the pouring spout. In other words, the packaging structure is provided with a pouring spout on the outward-turned folded corner of the packaging body, and the side pouring spout is connected to the inner cavity of the packaging body, and the beverage in the packaging body can be poured out through the pouring spout. Compared with the traditional packaging structure, the packaging structure provided in the embodiment of the present application, in a non-opened state, seals the pouring spout through the sealing portion, and when it is necessary to pour out the beverage, it is only necessary to lift up the outward-turned folded corner on the packaging body and destroy the sealing portion to expose the pouring spout, and the beverage can be poured out from the pouring spout. This arrangement does not require opening the entire main seal or cutting the package, and is easy to operate and labor-saving, which is conducive to meeting the needs of consumers.

[0048] 3. A packaging structure with a built-in layer, which can form a straw or a functional layer: when the built-in layer functions as a straw, the straw is arranged inside the packaging structure. Compared with the traditional method of gluing the straw on the outer wall of the packaging structure, the packaging structure provided by the embodiment of the present application embeds the straw into the packaging structure, and the connecting edge of the straw is connected to the inner wall of the packaging structure. In this way, the straw will not be lost during the packaging, transportation or transfer process, nor will it be contaminated with external dirt, so that it cannot be used; when the built-in layer functions as a receiving cavity for accommodating accessories such as soup spoons and straws, compared with the traditional can packaging for liquid food and drinks with large solid particles that requires a soup spoon, the packaging structure provided by the embodiment of the present application places the soup spoon in the receiving cavity formed by the built-in layer in the packaging structure, which can reduce one plastic cover garbage for accommodating the soup spoon, and the customer does not need to worry about the hygiene of the soup spoon when taking it from the built-in layer; when the built-in layer serves as a receiving cavity for condiments cavity, customers can choose to add seasonings to the drinks or foods in the package. Compared with the existing biscuit boxes, the packaging structure provided in the embodiment of the present application places the seasonings in the receiving cavity formed by the built-in layer in the packaging structure, and customers can have more choices in the taste that meets their personal needs. Or, compared with the existing beverages or dairy products, the packaging structure provided in the embodiment of the present application places the seasonings or tea bags in the receiving cavity formed by the built-in layer in the packaging structure, and customers can destroy the built-in layer by the tear guide according to their personal taste and selectively add to change the taste; when the built-in layer is located in the folded corner area of ​​the package and the tear guide is connected to the side wall of the package, compared with the beverage packaging in the prior art, the packaging structure provided in the embodiment of the present application allows customers to break the built-in layer by flipping the folded corner to achieve the function of one-step unsealing packaging. The new functions brought by the packaging structure provided in the embodiment of the present application as described above are more conducive to meeting the current needs of consumers.

[0049] 4. The packaging structure is formed by only one packaging sheet. Compared with the Ecolean kettle, which needs to cut a packaging sheet of a suitable shape from three pieces of material, the utilization rate of the packaging materials is lower and the production process is more complicated. The packaging structure of this case is formed by folding a single piece of packaging sheet, which greatly improves the utilization efficiency of the packaging materials. At the same time, the present invention also has a "corner" formed by curling or folding. The "corner" is convenient for setting an opening, or is used to accommodate the "corner" of other packaging bodies, or to provide stability of the packaging.

[0050] 5. At least one point of the accessory is fixed on the compartment. When the compartment is opened, one end of the accessory will be pulled out, which is convenient for use and meets the needs of consumers.

[0051] 6. It has a vertical surface with good supporting performance; there is also a three-vertex surface, which uses the relatively stable characteristics of the triangle to improve the stability of the packaging structure.

[0052] The top surface is a three-vertex angle. When the top surface sealing area is broken, the top surface can conveniently provide a larger oblique pouring outlet, or has a flat angle less than 90 degrees to facilitate the setting of the pouring outlet. When the expansion angle makes the flat angle turn into a convex angle, an oblique fluid channel can be formed; The side has three vertices, and the opposite side also has an oblique angle to facilitate the setting of openings to form an oblique fluid channel; The triangular structure will inevitably bring an inclined surface or a curved surface, which makes the display on the shelf more intuitive and has a more obvious visual effect. The visual angle of the inclined surface is larger than that of the straight surface, allowing customers to see the packaging at a glance from the side.

[0053] At the same time, the packaging folded from a single sheet and having a triangular structure can improve the lateral or longitudinal stability.

[0054] Finally, the triangular surface must be inclined, which is more display-friendly. The triangular surface can also be used as a gripper to facilitate grabbing from the shelf.

[0055] From the aspect of processing technology, the processing method described in the present application is convenient to operate and has a high degree of automation. The processing method processes a single packaging material by first making the inner fold angle of the package and sealing the horizontal opening at the top of the package to form a fillable packaging body, and then filling the product through the bottom of the package. The advantages of this processing method are: first, for products such as solid particles, semi-liquid and semi-granular liquid food or semi-solid state with large internal friction resistance and low fluidity, if the existing technology is used, it is not easy to process an inner fold angle package with a high yield rate after filling the product first, and then making the inner fold angle and sealing the main seal on the top of the package. However, by changing the processing order through the present processing method, the defect of the process conflict between the filling material and the corner making of such products with large friction resistance and low fluidity can be overcome. Secondly, due to the single inner fold angle packaging, most of the packaging before forming is inclined at the top, which is an opening shape that is not conducive to filling, so it is necessary to first process the opening at one end with the inner fold angle, and then fill it from the other end of the package.

[0056] The inner corners can be made by using multiple processing carts on a continuous track, and the concave corners can be made by mutual extrusion in a small processing workshop without the need for a special step to complete this work. The mutual extrusion can form a pre-formed concave angle structure, which can then be packaged. In the prior art, when making roof-type packaging, it is necessary to carry out the process of making the inner corners for each package with a concave angle (inner corner) one by one, which is inconvenient to operate and the process is cumbersome. If the processing method of this case is used, a mechanism specifically used for making corners can be omitted, and common or continuous packaging can also be achieved to achieve a breakthrough in productivity.

[0057] At present, there are many types of food packaging, and the types and characteristics of each type of packaging are also different. However, each type of packaging can only contain the type of content that matches its own characteristics. The packaging is not compatible, not convenient to use, has high transportation costs, and is not hygienic and environmentally friendly.

[0058] 1. In the prior art, there are various packaging for beverages, such as paper-plastic packaging for beverages. Most ordinary paper-plastic packaging can only hold liquid contents, and the types of contents that can be held are limited; roof-type packaging with two inner folded corners requires multiple steps to open, which is inconvenient. Because of the influence of the two inner folded corners, it is impossible to open a larger opening. In addition, since its top surface is in the shape of a roof, the top cannot directly bear pressure during transportation. In addition, due to the limitation of the processing method, it cannot hold contents other than liquids; packaging with a tearable aluminum foil main seal area requires repeated tearing and tearing. The aluminum foil must be folded before it can be torn open, which is a cumbersome process. Traditional liquid food cans, such as the eight-treasure porridge cans on the market, have a cylindrical shape, so the transportation cost is higher than that of rectangular packaging. They also have a lid for accommodating a soup spoon, which is not airtight and cannot ensure the hygiene and safety of the soup spoon. They cannot be connected to the packaging, and the material is different from that of the packaging itself, which has a greater impact on the environment. Glass cans are large in size and heavy in weight, easy to break, and inconvenient to carry. Plastic soft packaging for condiments has poor ability to stand on a flat surface, and the packaging is so soft that it is inconvenient to pour out.

[0059] In the prior art, the processing technology for food packaging with inner corners, such as roof-type packaging structures, is too complicated and needs to be divided into multiple processes. It also requires two or three sets of equipment to complete the entire process of processing and filling, which is time-consuming and labor-intensive, inconvenient to operate, and has low production efficiency. In addition, due to the influence of the order of filling first and then making the corners in the prior art, contents with large internal friction resistance and poor fluidity are not compatible with such packaging.

[0060] In summary, providing a packaging that is highly compatible, easy to use, hygienic and environmentally friendly, and has low transportation costs is one of the technical problems to be solved by this application.

[0061] 2. In the prior art, beverage packaging structures are mainly divided into soft packaging structures and hard packaging structures. The soft packaging structure will be deformed due to the squeezing, which is not convenient for storage and transportation; while the hard packaging structure is convenient for storage and transportation, when the drinker opens the hard packaging structure, he often needs to cut the packaging structure or tear open the entire main seal to enjoy the drink. The opening process is time-consuming and laborious, which is very inconvenient.

[0062] In summary, how to avoid the drinker from spending time and effort in opening the packaging structure when drinking a beverage is one of the technical problems to be solved by the present application.

[0063] 3. In the beverage packaging of the prior art, most of the packaging does not come with a straw. At this time, if you want to suck the beverage in the package through a straw, you need to find a merchant to get it, which is very inconvenient; some packages will stick a straw on the outer wall of the package. However, in this way, the straw is easily squeezed out during the packaging transportation or transfer process. At the same time, the external straw is easily contaminated with external dirt due to the rupture of the external film, making it unusable. In addition, the straw and the packaging are made of different materials, which is not conducive to garbage classification and recycling. If the film bag containing the straw and the straw are not connected to the main body of the package, they are easily discarded by customers at will, and small garbage is difficult to clean up, resulting in increasingly serious global ecological environment and marine garbage problems.

[0064] In the prior art, cans used to package liquid food, such as eight-treasure porridge cans, have a non-sealed plastic cover on the top for accommodating a folding spoon. First, the plastic cover is made of a different material from the aluminum can, which causes trouble in garbage sorting. Secondly, the plastic cover cannot seal the straw, and if the package comes into contact with water, it is easy to contaminate the internal spoon. Finally, the plastic cover is not connected to the package body, which is easy to generate extra unnecessary garbage. In the context of the increasingly severe global environmental situation of marine garbage and carbon neutrality goals, garbage reduction is the future trend.

[0065] In summary, based on the background of global environmental governance and carbon neutrality goals, as users' requirements become increasingly higher, providing a packaging structure with processed straws and functional layers in the packaging structure becomes one of the technical problems to be solved by this application.

[0066] 4. The existing Ecolean packaging, see patent document with application publication number CN107801388A, has a pouring spout.

[0067] The Ecolean kettle needs to have an inflatable handle for holding or providing vertical support. At the sales end, several packages are usually packaged together for sale. If a kettle-shaped package can be provided that can stand upright without inflation and can be combined into a row like building blocks, it can reduce invalid space in transportation, improve transportation efficiency and increase packaging stability.

[0068] Moreover, the Ecolean pot is made of three pieces of plastic packaging materials, which is cumbersome to process and produces waste garbage during the process of cutting into sheets with curved edges.

[0069] The Ecolean packaging is not conducive to standing upright on the table. It has a pouring spout but cannot guarantee hygiene around the spout, so a straw has to be provided. Moreover, because the pouring spout is made of two pieces of soft material, it cannot be sucked directly and must be squeezed. Therefore, from the perspective of use, the pouring spout of the Ecolean pot cannot be used as a sucking port to replace a straw.

[0070] Ecolean pots have a short shelf life, while pots made of laminated materials have a longer shelf life.

[0071] Meanwhile, most of the other prior art packages have plastic straws or injection-molded openings. However, accessories such as straws are easy to be lost, or separate debris such as straws and their wrapping films may be generated, which is not conducive to subsequent processing.

[0072] In summary, providing a packaging that can reduce fragmented garbage and conveniently set up openings to replace plastic accessories such as straws and injection molding openings has become one of the technical problems to be solved by this application.

[0073] 5. At present, food packaging is mainly divided into soft packaging and hard packaging.

[0074] In the prior art, soft packaging will be deformed due to compression, which is inconvenient for storage and transportation; while hard packaging is convenient for storage and transportation, when drinkers open the hard packaging, they often need to cut the packaging or tear off the entire main seal (similar to the bottle mouth) to enjoy the drink. The opening process is time-consuming and laborious, which is very inconvenient.

[0075] Later, people invented packaging with straws, such as the patent document of publication number CN111137524A. However, the straws are located outside and are easy to fall off.

[0076] 6. Existing beverages such as milk are mostly contained in sealed packaging structures.

[0077] Referring to the patent document with the publication (announcement) number CN108349206A, the whole is a hexahedron with four supporting ribs and six side faces which are all parallelograms. However, the packaging structure is still easy to deform and the stability performance is poor.

[0078] Most of the existing technologies are six-sided brick-shaped packaging, which is not eye-catching enough on the shelf. If placed in a deeper position or at the lower level of the shelf, it is generally difficult to see the graphics on the front, and customers do not know what they are. In addition, the opening method is single, and external accessories are required, and the packaging cannot be poured out.

[0079] Referring to the patent document with publication (announcement) number CN101808816A, the front side is convenient for display (that is, it is conducive to attracting consumers), but it has no supporting ribs and the stability of the packaging is poor. Therefore, it is necessary to use thicker blanks or introduce other load-bearing supports such as bubbles.

[0080] The prior art Ecolean pot is a package with an inclined surface, an inclined surface or a curved surface, and a pourable fluid channel, which can overcome the above problems, but sacrifices the stability of the package, and is made of three pieces of packaging materials, and the process is complicated. Providing a package with an easy-to-open opening structure so that the accessories (or straws) in the package can be taken out from the hole is one of the technical problems solved by the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 This is a schematic diagram of the structure of the convex corner pouring outlet in the open state in the embodiment of the present application; Figure 2 Is for Figure 1 A schematic diagram of the structure of the embodiment of the invention in which the pouring outlet is not opened; Figure 3 This is a schematic diagram of a partial packaging structure of a convex corner sucking port in an open state in an embodiment of the present application; Figure 4 Is for Figure 4 A schematic diagram of the overall packaging structure of the convex corner sucking port in an opened state; Figure 5 for Figure 3 A schematic diagram of a partial packaging structure of a convex corner sucking port in an unopened state; Figure 6 This is a schematic diagram of an embodiment of the present application in which the tear line of the sucking opening is located slightly obliquely in the sealing area of ​​the package; Figure 7 This is an exploded view of the embodiment of the present application in which the wrapping sleeve is not installed on the packaging sheet; Figure 8 This is a schematic diagram of the structure of the pouring spout formed after the folded and formed wrapping sleeve is removed in the embodiment of the present application; Fig. 9 It is a schematic diagram of a packaging structure group in which a convex corner has a sucking opening and is separated from a concave corner of another package in an embodiment of the present application; Fig.10 This is a schematic diagram of the structure of opening the package by the concave corner and the tear line running through the upper part in the embodiment of the present application; Fig.11 for Fig.10 Schematic diagram of the structure in the unopened state; Fig.12 for Fig.41 Schematic diagram of the packaging sheet unfolding at the upper tear line; Fig.13 This is a schematic diagram of the structure of the packaging structure in the embodiment of the present application when the outwardly turned corner has a pouring outlet that is not opened; Fig.14 for Fig.13 A schematic diagram of the structure of the middle packaging structure with an outwardly turned corner having a pouring outlet and connected to a tear guide when not opened; Fig.15 for Fig.13 A schematic diagram of the structure when the outwardly turned corner of the middle packaging structure has a pouring outlet opened; Fig.16 An exploded view of a one-way pouring structure of a packaging structure in an embodiment of the present application and a schematic diagram of the liquid flow direction; Fig.17 for Fig.14 A schematic diagram of the structure of the tearing guide portion after the pouring outlet is opened; Fig.18 This is a schematic diagram of completely removing the outer corner in an embodiment of the present application; Fig.19 for Figure 1 A partial schematic diagram of a middle pouring spout having a tear line and a mark line of an auxiliary forming opening; Fig. 20 This is a schematic diagram of a structure in which a local sealing area on a flat corner has a shear cut in an embodiment of the present application; Fig.21 This is a schematic diagram of a tear line in an embodiment of the present application in which the top is opened by pulling the sealed and perforated flat outer corner; Fig. 22 This is a diagram of the open state in which the upper portion of the package has a concave corner and a convex corner with a pouring outlet in the embodiment of the present application; Fig.23 This is a schematic diagram of the structure in which the upper portion of the package has concave corners and convex corners in an embodiment of the present application; Fig.24 This is a schematic diagram of the structure in which the upper portion of the package has concave and convex corners and is pot-shaped in the embodiment of the present application; Fig.25 for Fig.14 A schematic diagram of a structure in which the middle convex corner has a pouring outlet and is in an open state; Fig.26 for Fig.30 A structural schematic diagram of a continuous processing schematic diagram; Fig. 27 This is a schematic diagram of the structure in which the folding line of the concave corner sealing area does not overlap with the top sealing area in the embodiment of the present application; Fig.28 Schematic diagram of the steps of opening the triangular top surface in the embodiment of the present application (I); Fig.29 Schematic diagram of the steps of completing the opening of the top sealing area of ​​the triangular top surface in the embodiment of the present application (II); Fig.30 This is a schematic diagram of the structure in which the folding line of the concave corner sealing area of ​​the pillow-shaped package in the embodiment of the present application does not overlap with the top sealing area; Fig.31 This is a schematic diagram of the structure in which the accessory built into the packaging structure in the embodiment of the present application is a soup spoon; Fig.32 This is a schematic diagram of the structure in which the inner layer is curled into a tube and connected to the inner wall of the package in the embodiment of the present application; Fig.33 This is a schematic diagram of the expansion of the inner layer forming a straw structure in the embodiment of the present application; Fig.34 This is a schematic diagram of the structure in which the inner layer is curled into a U shape and connected to the inner wall of the package to form a straw structure in the embodiment of the present application; Fig.35 A schematic diagram of the structure of pulling the built-in bendable straw through the opening structure to remove a part in the embodiment; Fig.36 A schematic diagram of the structure of pulling the built-in telescopic straw through the opening structure to remove a part in the embodiment; Fig.37 for Fig.37 Schematic diagram of the structure in the unopened state; Fig.38 for Fig.36 Schematic diagram of the structure in the unopened state; Fig.39 This is a schematic diagram of the structure in which the entire top is opened by pulling the inner corner in an embodiment of the present application; Fig.40 for Fig.39 A schematic diagram of the structure of the unopened state; Fig.41 for Fig.21 Schematic diagram of the structure of pulling to open; Fig.42 This is a schematic diagram of the structure of the present application having inner and outer packaging and an inner layer cavity for holding seasonings on the inner wall of the outer packaging; Fig.43 This is a schematic diagram of the structure of the internally inserted corner connected to the built-in layer cavity containing condiments such as tea bags in the embodiment of the present application; Fig.44 This is a schematic diagram of the structure of the built-in layer cavity containing condiments that can be squeezed through the inner insertion angle in the embodiment of the present application; Fig.45 This is a schematic diagram of a structure in which the bottom surface is a quadrilateral and the side surface is a triangular imaginary vertical surface in an embodiment of the present application; Fig.46 for Fig.45 Rear view of Fig.47 for Fig.45 Adding structural edges in the diagram converts the side of the smooth curved surface into a structural diagram of multiple planes; Fig.48 This is a schematic structural diagram of a concave angle connected to the bottom surface opposite to the upright surface of the packaging structure in the embodiment of the present application; Fig.49 This is a schematic structural diagram of a convex corner not connected to the bottom surface opposite to the upright surface of the packaging structure in the embodiment of the present application; Fig.50 This is a schematic structural diagram of a packaging structure in an embodiment of the present application in which the opposite side of the upright surface is a concave corner not connected to the bottom surface; Fig.51 This is a schematic structural diagram of a convex corner connected to the bottom surface opposite to the upright surface of the packaging structure in the embodiment of the present application; Fig.52This is a schematic diagram of the structure of the triangular prism packaging in the embodiment of the present application; Fig.53 It is a schematic structural diagram of a triangular prism package with a handle or a triangular prism packaging bag with a handle in the present application; Fig.54 This is a schematic diagram of a structure having two triangular faces that are not parallel to the opposite side faces in an embodiment of the present application; Fig.55 This is a schematic diagram of a structure in which the top surface and one side surface are triangular and the top surface is parallel to the bottom surface in an embodiment of the present application; Fig.56 for Fig.54 Another perspective of the picture; Fig.57 for Fig.50 Schematic diagram of unfolding the packaging sheet; Fig.58 for Fig.52 Schematic diagram of unfolding the packaging sheet; Fig.59 for Fig.45 Schematic diagram of unfolding the packaging sheet; Fig.60 for Fig.55 Schematic diagram of unfolding the packaging sheet; Fig.61 for Fig.56 Schematic diagram of unfolding the packaging sheet; Fig.62 for Fig.51 Schematic diagram of unfolding the packaging sheet; Fig.63 for Fig.53 Schematic diagram of unfolding the packaging sheet; Fig.64 A schematic diagram of a packaging structure group formed by embedding two identical packaging structures; Fig.65 A schematic diagram of a packaging structure group formed by embedding two different packaging structures; Fig.66 A schematic diagram of a packaging structure group in which one of the package convex corners has a sucking opening; Fig.67 A schematic diagram of a packaging structure group formed by embedding a pot-shaped packaging structure into another double-inward concave corner packaging; Fig.68 A schematic diagram of a plurality of packaging structure groups with sucking openings; Fig.69 It is a schematic diagram of packaging status during the processing of the packaging structure group; Fig.70 The schematic diagram is a process diagram of loading a cylindrical blank onto a processing carriage and stacking it in a low-speed track area to be processed into a pre-formed concave angle and the baffle 608 pushes the sealing area to be close to each other. DETAILED DESCRIPTION

[0082] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0083] A packaging structure 100 is formed by folding a single piece of packaging sheet.

[0084] The packaging structure 100 has a corner formed by curling or folding, which is a concave corner 104 that is concave inward or a convex corner 105 that is convex outward. Compared with the Ecolean kettle composed of three pieces of packaging sheets, the packaging of this case also provides a corner as a location for setting an opening. The difference is that the Ecolean kettle needs to cut packaging sheets of suitable shapes from three pieces of material, which has a lower utilization rate of packaging materials and a more complicated production process. The structure of the packaging of this case is formed by folding a single piece of packaging sheet, which greatly improves the utilization efficiency of packaging materials.

[0085] The angles include conical angles or flat angles, which are divided into concave angles 104 and convex angles 105; The concave corner 104 is concave inwards, and is an inner folded corner 104 or an inserted corner, which is used to accommodate the corner of other packaging bodies, or to provide an opening to provide a way to open the package from the concave corner 104; The convex corner 105 protrudes outward and is a conical corner or an outer corner 105, which is used to set the opening.

[0086] It should be noted that the concave corner 104 is used to accommodate the convex corner 105, or to provide stability for the package, or to provide a way to open the package from the concave corner 104; while the convex corner 105 is used to set an opening for easy pouring and use. The corners in the shape of a triangular pyramid or a cone, that is, the opening structure 182 located at the top corner can be separated to form a channel, while the opening presented by the flat corner after the opening structure 182 located at the top corner is separated is flat, and it needs to be squeezed and deformed to form a channel. And the cone angle can be divided into a cone with an angular shape or a cone angle bent by a curved surface.

[0087] The packaging structure 100 further includes an opening structure 182 of a preset shape, wherein the entirety or a portion of the opening structure 182 is located at the corner, and / or the opening structure 182 is assisted in opening by the corner; The packaging sheet is a single layer material or a laminated material formed by combining multiple layers of materials; The opening structure 182 includes an opening and a sealing structure; An opening, wherein the opening is an area of ​​a preset shape defined by a tear line and / or a through hole on at least one material layer of the packaging sheet; the area at least includes a partial corner sealing area 180 and / or a lower corner surface 112; The sealing structure is a part of the packaging sheet covering the opening area, or an independent covering structure that is not connected to the packaging sheet; before the sealing structure is destroyed, the opening is in a sealed state.

[0088] It should be noted that application No. 202010010747.0 provides a packaging structure group, the main feature of which is that there is an incision at the transverse seal, but it also emphasizes that it is a laminated material. It is well known that laminated materials are made of multi-layer materials, which are difficult to tear, let alone torn in the best expected way. In addition, the transverse seal area and the corner to be torn are in a T-shaped structure, which is difficult to tear in one step and difficult to tear into the expected opening shape. The present case provides an opening located at the corner, which is a pre-made opening structure 182 provided by a pre-treated packaging material, so that the opening shape obtained by tearing is as expected, and the weakened torn edge is also easier to open. The present case provides an ordinary tear line opening method, and also provides an opening structure 182 that is a very soft film or a complete through hole. The complete through hole is a through hole of all material layers at the opening position. Another structure serves as a support or seal for the opening structure 182, and the film opening can be easily destroyed or the complete through hole can be exposed by pulling another structure. Alternatively, the opening structure 182 hidden in the concealed surface may be indirectly destroyed by lifting the outwardly folded corner or pulling the inwardly folded corner, or the opening structure 182 at the preset position may be continuously destroyed.

[0089] See attached Figure 1-6 , the corner is a convex corner 105, and the opening structure 182 is at least located in the sealing area 180 of the convex corner 105, that is, at least the sealing structure located in the sealing area 180 of the convex corner 105 is removed to form an opening at least located in the corner top surface 101, and / or, The corner is a convex corner 105 , and at least a portion of the sealing structure of the opening structure 182 is located at the vertex of the outer folded corner 105 . When the sealing structure is removed, the sucking opening 190 can be formed.

[0090] It should be noted that the present invention provides a pouring spout 390 located at the corner, at least the sealing area 180 on the corner is removed, and further, the top horizontal sealing area 180 connected to the corner sealing area 180 can also be partially removed to obtain a larger opening; or at least the sealing area 180 on the corner is removed, and further the connected corner is partially removed to obtain a slightly inclined opening; further, if only the sealing area 180 of the convex corner 105 is removed, a slit-like opening will be formed on the upper part of the convex corner 105, and a longitudinal mark line needs to be provided to facilitate the customer to push it, so as to form a non-slit-like opening, generally in the shape of a diamond or a circle.

[0091] It should be noted that the present invention provides a sucking port 190 located on the corner, at least the position at the top corner of the corner is removed to form an opening, that is, only the top corner position on the convex corner 105 is removed, and further, a part of the sealing area 180 of the convex corner 105 can be removed together, which is more ergonomic and can be located at the cone angle or at the outer corner 105.

[0092] As the name suggests, the cone angle is a conical angle, and it is a cone angle formed by curling at least one surface. When viewed from the inside, the surfaces in all directions are not connected, that is, there is a fluid channel after the opening is formed; and the outer fold angle 105 is generally an angle with two flat surfaces, or a cone angle composed of at least three planes. When it is a flat angle, it is necessary to pinch its two sides or unfold the package to transform the flat shape into a cone shape to form a fluid channel.

[0093] See attached Figure 7-9 The external sealing structure located at the outer corner 105 is a folded wrapping sleeve, or is an inner corner 104 of another packaging structure 100, that is, the outwardly protruding corner is wrapped by the external sealing structure, and the opening structure 182 can be destroyed by pulling the external sealing structure; and / or the unconnected area on the outer corner 105 is a sanitary area where the sucking port 190 contacts the mouth.

[0094] It should be noted that the present invention provides a sucking mouth 190 and provides a structure for ensuring hygiene for the sucking mouth 190. This structure at least wraps the position where the sucking mouth 190 fits the mouth, and requires that this structure is only connected at the opening position or the edge of the opening, so that the surface of the sucking mouth 190 can be kept clean and tidy after separation, without glue or damage to the surface of the laminated material to affect the taste and hygiene. This structure can be a sleeve or a recessed part of another package, wrapping the sucking mouth 190. In other words, the two packages can be connected in this way, and the two can be pulled apart to obtain an opening for use, which is done in one step, saving time and effort. Because the package is large, it acts as a labor-saving arm for the connection position that needs to be opened, which can indeed save effort. Furthermore, considering that the sucking mouth 190 replaces the straw, the customer's feeling of use is very important. A layer of gasket can be set at the position in contact with the lips. This gasket can be an alcohol gasket, which can inhibit bacteria to ensure hygiene and safety, or it can be set as a silicone gasket to give customers a better experience.

[0095] See attached Figure 10-12 , the corner is a concave corner 104 or an outer folded corner 105, a tear line is provided at the sealing structure, at least a portion of the tear line is located on the surface of the corner and the top surface 101 of the packaging structure 100, and after the tear line is broken, the top surface 101 of the packaging structure 100 is separated from the position of the corner to form an opening; and / or A handle 1709 area is provided on the sealing structure, and a handle 1709 is provided in the handle 1709 area. The handle 1709 is a component protruding from the top surface 101.

[0096] It should be noted that the present invention provides a way to open the package, that is, by inserting a finger into the concave corner 104 and pulling upward, the upper top surface 101 of the package is opened like opening a can. Of course, it can include the entire upper top surface 101 or even a part of the side wall, but considering the load-bearing aspect of transportation, the weakening line, that is, the tearing line, that is, the edge line of the opening, is preferably not located on the supporting ridge of the package, unless the package does not need to be stacked during transportation. In other words, it is best that the tearing line is located at a position where the top surface 101 of the package is not close to the ridge, and can even be close to the sealing area 180, so that only the local top position is torn off, or only the sealing area 180 is torn off. The premise of the above-mentioned embodiment of opening all the tops is that there needs to be a concave corner 104, and the rupture line located at the concave corner 104 is at least located at the upper part of the concave corner 104 to separate the part of the concave corner 104. Of course, in the same way, the upper part of the package can also be separated by pulling the outer folding corner 105.

[0097] It should be noted that when the sealing area 180 at the corner is larger than the sealing areas 180 at other positions, the package can be opened by pulling the sealing area 180 at the corner. In this way, it is more difficult to insert fingers into the corner package, and the package can be opened by pulling the sealing area 180.

[0098] Of course, the sealing area 180 at the corner may be larger than the sealing areas 180 at other positions and may be formed independently, and the sealing area 180 at the corner may be broken open by bending or pulling the sealing area 180 at the corner.

[0099] It should be noted that, since the corner can be a triangular pyramid, flat, or curled into a cone, an imaginary horizontal plane parallel to the bottom surface of the package is used to cross the above corner to distinguish the upper and lower sides: the upper part or upper surface of the concave inner corner 104 is the upper surface, and the lower surface or bottom surface of the concave corner 104 is the horizontal lower surface, that is, when looking at the concave corner 104 from the top of the package, the visible surface is the upper surface, and the invisible lower surface is the lower surface; similarly, the upper and lower sides of the convex corner 105 are also defined in the same way. In other words, the surface that connects the sealing area 180 of the corner is the upper side.

[0100] See attached Figure 13-14The angle is an outer folded angle 105, the opening structure 182 is located at the lower angle surface 112, the outer folded angle 105 can be folded and attached to the side wall, and the opening structure 182 is connected to the side wall, so as to destroy the hidden opening structure 182 by lifting the outer folded angle 105, and / or the opening structure 182 is connected to the side wall through a tear guide portion, the tear guide portion is a tear guide piece in a folded state, and the opening direction of the tear guide portion is toward the direction of the intersection line of the outer folded angle 105 and the side wall, the tear guide portion includes a first tear guide piece and a second tear guide piece connected to the first tear guide piece, the first tear guide piece is bonded to the side wall, and the second tear guide piece is bonded to the sealing structure.

[0101] This embodiment is an opening at the side 103, which has the beneficial effect that the folded corner can be used to form a labor-saving lever, so that the package can be easily opened in one step, and the opening is covered and shielded by the folded corner 105, so that the opening position is hygienic and safe, and can be directly sucked. It should be noted that the top surface 101 or the top of the corner is the surface that can be seen from above, and the bottom surface of the corner is the surface that cannot be directly seen from above, and the top surface 101 is connected to the corner sealing area 180, and the bottom surface is the side close to the side wall. If the opening structure 182 is not a complete through hole, it can be directly connected to the side wall. Considering that if it is directly connected, the stacking during transportation may cause stress and increase the breakage rate of the package, or the two can be indirectly connected with the help of other materials such as tear guide materials, so that the opening structure 182 has room for buffering. The tear guide material can be a flexible material or aluminum foil, and the folded state is to enable the two to be indirectly connected and have a buffer; or the through hole is sealed by the side wall. It can also be achieved, but it is necessary to first make the top of the package with a cylindrical packaging material, and fold the outer fold corner 105, and tighten it by ultrasonic or heated high-pressure sealing. The method of heating the outer fold corner 105 and attaching it to the side wall after filling in the existing technology line cannot be applied to this complete through hole embodiment.

[0102] See attached Figure 15-17 , and also includes a one-way pouring structure provided on the inner wall for covering the pouring outlet 390. The one-way pouring structure can be used to pour the contents out of the pouring outlet 390 when the packaging structure 100 is squeezed, and can prevent external air from entering the inner cavity of the packaging structure 100 when the packaging is not squeezed; the one-way pouring structure includes: The first material layer is fixedly connected to the inner wall of the inner layer structure and is provided with a through hole, and the through hole is used to allow the beverage in the packaging body to flow to the pouring outlet 390; The second material layer is provided between the first material layer and the inner wall and is used to prevent external air from entering the inner cavity of the packaging body; The first material layer and the second material layer are two material layers, or the same material layer is folded into a double-layer structure with different lengths.

[0103] The packaging structure 100 also includes a one-way pouring structure, which is arranged on the inner wall of the inner layer structure and is used to cover the opening structure 182. The one-way pouring structure allows the beverage in the packaging body to be poured out from the opening structure 182 and can prevent external air from entering the inner cavity of the packaging body. Specifically, the one-way pouring structure includes a hard film layer and a soft film layer, wherein the hard film layer is fixedly connected to the inner wall of the inner layer structure, and the hard film layer is provided with a through hole, which is connected to the inner cavity of the packaging body, and the through hole is used to allow the beverage in the packaging body to flow to the opening structure 182; the soft film layer is arranged between the hard film layer and the inner layer structure, and the soft film layer is used to prevent external air from entering the inner cavity of the packaging body. It should be noted that the soft film layer covers the through holes on the hard film layer, and the size of the soft film layer is slightly smaller than that of the hard film layer. The bottom edge of the soft film layer is higher than the bottom edge of the opening structure 182, and due to the film characteristics of the soft film layer, under the pressure of pouring out the beverage, there is a sufficient gap between the soft film layer and the hard film layer for the beverage to be poured out through the opening structure 182, thus forming a communicating vessel, and since the packaging structure 100 as a whole tends to recover, the film will be pressed onto the through holes of the hard film layer by the air pressure, and due to the existence of the communicating vessel structure, a structure that can only output but not input can be formed, so that the water seal and air tightness of the packaging structure 100 are good, and even after the opening structure 182 is unsealed, it is not easy to leak.

[0104] See attached Figure 18-21 , the corner is the outer corner 105, the opening structure 182 includes the entire outer corner 105 and the outer corner 105 sealing area 180, so as to completely separate the outer corner 105 to form the pouring port 390, or, The top surface 101 of the corner with the opening has longitudinal score lines to assist in forming the pouring spout 390, or, The edge of the flat outer folded corner 105 is partially sealed and a shear cut is set in the sealing area 180 so that the package can be torn open through the shear cut, or the top and bottom of the flat outer folded corner 105 are partially sealed, and holes are punched in the sealed area to form a pull ring and a handle 1709.

[0105] It should be noted that the present case provides a pouring spout 390, which is achieved by completely removing the outer folded corner 105, that is, the opening tear line surrounds the bottom edge of the outer folded corner 105, and the opening can be torn by pulling the corner. Further, the outer folded corners 105 on both sides can be sealed together, and holes can be punched thereon. The corner can be conveniently pulled down and separated from the package by hooking the hole with a finger and pulling it.

[0106] It should be noted that the edge of the flat outer fold 105 is partially sealed and an incision is set in the sealing area 180, so that the opening method of tearing the package through the incision can have a tear line, but it can also be without a tear line. The tearing opening shown in the benchmark application number 202010010747.0 is located in the horizontal sealing area 180. Generally, the narrowest sealing area 180 is only 5-8mm, and it is difficult for the user to exert force on the sealing area 180. However, by setting the tearing opening on the outer fold 105, the user's force surface is larger and it can be easily torn open.

[0107] The packaging structure 100 has a concave corner 104 on the upper portion, which is located on the other side of the convex corner 105 and has a concave corner 104 that can be embedded by the convex corner 105; and / or The convex corner 105 can be covered or connected by the concave corner 104 of another packaging structure 100, so that more than two packages can be neatly arranged or connected, and more than two packaging structures 100 with convex corners 105 can fit together.

[0108] It should be noted that the present invention provides a pot-shaped packaging structure 100, which has outwardly protruding corners and can be used as the outlet of the pot-shaped packaging; it also has inwardly concave corners, so that two identical packages can be assembled and sold like building blocks, and the protruding corners will not become an obstacle to transportation. The two-by-two interlocking structure can effectively protect the packaging structure 100 and the preset opening structure 182 on the packaging structure 100, and can even open the package while disassembling and assembling. It is simple to operate, easy to use, and convenient to transport. Multiple packages can be produced and filled in groups, making production simple and efficient.

[0109] It should be noted that it is not emphasized here that another package with a concave corner 104 is consistent with the packaging structure 100 of this case, that is, other packaging structures 100 with suitable concave corners 104 can be matched with the packaging structure 100 of this case. In this way, more packages can be combined at will to achieve sales purposes or bring more other functions.

[0110] See attached Figure 22-25 , the packaging structure 100 is one of the following three: S1. The top of the packaging structure 100 is roof-shaped, and the convex corner 105 protrudes from the side wall and is in the shape of a triangular pyramid; S2, the top of the packaging structure 100 is a quadrilateral, and the convex corner 105 is a flat outer corner 105; S3. The bottom surface of the packaging structure 100 is a quadrilateral. As it gradually extends upward, its cross-sectional area gradually decreases. When it extends to the uppermost end, it is linear. When viewed from the front, it is trapezoidal, that is, it has an oblique convex corner 105.

[0111] It should be noted that there are at least three new types of packaging. The first is a roof-type packaging, which is similar to the roof-type packaging in the prior art, but one of its inner corners 104 is folded outward to present a packaging product with a triangular pyramid angle; the second is a brick-type packaging, which is similar to the more common brick-type packaging in the prior art, but the difference is that one of its corners is folded inward to form an inner corner 104; the third is a pot-type packaging, which is made of a tubular sheet folded into a packaging sheet with a quadrilateral bottom, and one corner of it is folded into the packaging and the top surface 101 is sealed to form a shape. The simple structure makes the processing equally simple. Furthermore, the imaginary side wall surface where the three edges at the bottom of the concave corner 104 are located is perpendicular to the bottom surface of the packaging.

[0112] See attached Figure 26-30 , the corner is a concave corner 104, the fold line of the corner sealing area 180 of the concave corner 104 is not covered by the main sealing area 180, and the package is opened through the concave corner 104 without being hindered by the crease line 1111, and the package is a pillow-type package or an upright package; or The opening structure 182 at least includes the inner folding line of the corner sealing area 180 of the concave corner 104, so that the sealing area 180 of the concave corner 104 can be broken and the inner folding line can be broken to continue breaking along the top sealing area 180 to open the top of the package.

[0113] It should be noted that in order to open the top sealing area 180 through the position of the inner fold corner 104, it is necessary to overcome the end fold line of the inwardly folded corner sealing area 180. As long as this fold line is easy to break or is not at the position of the top sealing area 180 to be opened, the action of opening the top sealing area 180 can be achieved.

[0114] It should be noted that when making pillow-shaped packaging, the concave corners can be folded in and the concave corner sealing area and the top sealing area can be directly sealed from the outside, that is, the concave corner sealing area and the front and back sides of the packaging are sealed as one. At this time, the entire top sealing area can be further split by splitting the concave corners.

[0115] See attached Fig.31 The packaging structure 100 has an opening, and the inner wall of the packaging has a connected built-in layer 102, and the built-in layer 102 is used to form a cavity to isolate or accommodate built-in accessories, or to form a straw 510 structure.

[0116] See attached Figure 32-34 The inner layer 102 is curled into an arch or tubular shape and connected to the inner wall of the package to form a straw 510 structure together. The inner layer 102 has at least two layers of material, wherein a material layer providing support performance is partially hollowed out, and another film layer at least covers the hollowed-out position, so that the inner layer 102 that is formed into the straw 510 structure after bending can be bent, and the user can take out the upper part of the straw 510 through the opening.

[0117] See attached Figure 35-38, the accessories are straws 510, spoons, forks, and chopsticks; the inner layer 102 covers at least the opening position, the straw 510 is specifically a bendable straw 510 or a telescopic straw 510, the lower end of the bendable straw 510 or the telescopic straw 510 is not covered by the cavity and is fixed to the inner wall of the package, the upper part of the telescopic straw 510 or the upper part and the bend of the bendable straw 510 are accommodated by the cavity, the upper part of the bendable straw 510 extends toward the inner top surface 101 of the packaging structure 100, and the upper part of the straw 510 can be taken out for use by opening the opening; See attached Figure 39-41 The accessory is not arranged parallel to the ribs of the packaging structure 100, that is, it is arranged obliquely toward the bottom corner of the packaging, so that the straw 510 is easier to suck, or the accessory can be designed to be longer, or Part of the accessory is arranged in the same direction as and connected to the opening structure 182 , so that the accessory can be taken out by pulling the opening structure 182 at the same time.

[0118] It should be noted that the straw 510 can be formed by folding the inner layer 102 itself, or it can be an external telescopic straw 510 or a bent straw 510. The straw 510 cannot be completely taken out, and only the upper part and the bent part can be taken out; of course, a soup spoon, fork, chopsticks, etc. can also be placed. When the content is a pre-prepared dish or eight-treasure porridge, it is necessary to open the entire top surface 101 or the top sealing area 180, and the soup spoon and other accessories can be taken out from the inner cavity to use the content. Due to the limitation of the top of the package, the area that can accommodate the straw 510 is small, and it can be arranged obliquely to accommodate a longer straw 510. The straw 510 is preferably partially connected to the opening structure 182, so that the straw 510 can be partially taken out while breaking the opening structure 182 and pulling it, so that the action that previously required multiple steps can be achieved in one step, and the separated fragmented garbage can also be left on the straw 510. In the embodiment of the straw 510, the opening structure 182 is in the shape of a long strip, preferably distributed on both sides, and arranged in the same direction as the straw 510, so that it is easier to break the opening and take out the straw 510. The straw 510 at the top of the package is longer than the position of the opening structure 182, so that after opening and pulling out the straw 510, the residue on the straw 510 does not affect the use. The opening structure 182 can have a shape, and can be collected by people after separation.

[0119] See attached Fig.42 The accessory is a condiment, and the packaging structure 100 can be a sealed package or a non-sealed outer package. The cavity formed by the inner layer 102 is a sealed structure. The inner layer 102 can be destroyed so that the condiment can fall into the package content for seasoning or brewing, or the outer shell packaging can be placed flat on the table, and the opening structure 182 can be opened to dip and use the condiment.

[0120] See attached Figure 43-44, the package body is provided with an inner folding angle 104 structure, at least a part of which is connected to the inner layer 102, and the inner layer 102 is torn open by flipping the flat inner folding angle 104 structure, so that the inner cavity is destroyed without destroying the sealing structure; or The packaging body is provided with an inner folding angle 104 structure, and the inner layer 102 is located below the inner folding angle 104. The inner folding angle 104 squeezes the inner layer 102 to destroy the cavity, so that the solution in the cavity falls into the content.

[0121] It should be noted that when it is necessary to drink a drink prepared on site, such as freshly brewed coffee or freshly brewed tea, the cavity is used to place condiments, such as coffee powder, syrup or tea bags, and the flat (inserted) inner corner 104 can break the connected built-in layer 102, so that the condiments fall into the drink. At this time, the package is still in a sealed state, and the instant brewing function can be achieved by shaking evenly, and the package can be opened for drinking; or the biscuit packaging with an outer paper shell on the market now, the opening of the cavity formed by the built-in layer 102 and the built-in layer 102 is set on the outer paper shell packaging of the biscuit packaging, the biscuit outer paper shell is placed flat on the table, the biscuit is taken out and the cavity opening is opened to expose the condiments such as sauces, which can be dipped and used. The built-in layer 102 can also be connected to the opening, and when the opening is broken, the built-in layer 102 is broken together, so that the condiments fall into the content, and the instant brewing function is achieved.

[0122] As an example, see the attached Figures 45-47 , a packaging structure 100 , at least one side has three vertices and at least one vertical surface 101 .

[0123] The packaging with a triangular structure can make its structure more stable. When the three vertices are the top surface 105, because the sealing area is the vertical line of the triangle formed by the three vertices, the top surface 105 is split along the vertical line to open the triangular top surface 105110, and the connected wings are unfolded together. Opening all the sealing areas of the top 110 can obtain a larger oblique opening. A sealing structure formed by folding a packaging sheet, wherein the surface with three vertices is a sealing surface and / or a vertical surface 101, and the vertical surface 101 is perpendicular to at least one surface; The sealing surface of the packaging structure 100 includes a top surface 105 and a bottom surface 169; Having corners, including flat corners and non-flat corners, which can be concave or convex toward the packaging structure 100; It also has a curved or inclined surface.

[0124] It should be noted that the surface defined by the three vertices is an imaginary triangular surface. In fact, the packaging can be composed of a smooth curved surface. The packaging has a three-vertex structure, or the upright side wall of the packaging is a structure composed of three vertices on the inner corner 104 or three ribs 203. There is no very intuitive plane, so an imaginary plane defined by the three vertices is needed to define the positional relationship of non-intuitive surfaces such as the top or side 106.

[0125] The top surface 105 or the bottom surface 169 refers to the top position and the bottom position of the sealing area. When the surface expressed as the top surface 105 or the side surface 106 with three vertices, the meaning can be interpreted as: the imaginary surface defined by the three vertices is used to define the posture and position relationship of a certain surface on the package. When the imaginary surface is the top surface 105, that is, the inclination direction of the top of the package is consistent with the imaginary surface. When the imaginary surface is parallel to the bottom surface 169, that is, the upper edge and the lower edge of the front view of the package are parallel. In theory, the package The upper surface allows for stable stacking during transportation, and when the imaginary surfaces are not parallel, the upper and lower edges of the front view of the package are not parallel, that is, the top is inclined, and when the items are stacked, there is a possibility of slipping, or the top surface 105 is easily broken by uneven force due to heavy objects; when this imaginary surface is a side surface 106 and is perpendicular to the bottom surface 169, that is, there is a side edge in the front view that is perpendicular to the lower edge, that is, the side surface 106 of this package can be neatly placed against another upright package. The front view is a view angle diagram where the top surface 105, the bottom surface 169, and the side surface 106 cannot be directly and completely observed. Therefore, the positional relationship between the top surface 105 or the side surface 106 with three vertices and the bottom surface 169 described in the text is the positional relationship between the imaginary surface and the bottom surface 169, which can be understood through the front view. The bottom edge of the top surface 105 or the side edge of the top surface 105 describes the imaginary edge connected by three points. When the technical features of the top surface 105, bottom surface 169 or side surface 106 are mentioned separately in the text but not emphasized, they are only used to refer to the positions on the packaging structure 100, and do not include planar technical features or concepts.

[0126] The vertical surface 101 means at least perpendicular to the top surface 105 or the bottom surface 169 of the sealing surface, where the top surface 105 is still an imaginary plane. The emphasis on the sealing surface means the positional relationship between the top surface 105 and the bottom surface 169 in a possible filling process, but it does not mean that it is the real bottom surface 169 in actual use, or any side of the package can be used as the bottom surface 169 according to the needs of use or design.

[0127] The sealing surface refers to the top surface 105 and the bottom surface 169 with the transverse sealing area arranged transversely. Because the triangular structure is introduced, there will definitely be a non-parallelism between the two related surfaces of the triangular structure, that is, a slope or a curved surface.

[0128] Corner refers to the inwardly concave or outwardly convex structure formed on the side 106 of the package. A flat corner is a structure in which the upper and lower sides of the corner are in contact with each other. A non-flat corner is a cone-shaped structure in which the upper and lower sides are not in contact with each other. The package is sealed by a sealing area. The continuous sealing area can be divided into a corner sealing area and a top sealing area 192 according to the position relationship. The corner sealing area is a sealing area located at the position of the corner. When the corner is set toward the outside of the package, the sealing area extends continuously toward the corner sealing area. When the corner is set toward the inside of the package, the corner sealing area is folded and partially covered by the top sealing area 192.

[0129] It should be noted that when the folding direction of the outer folding angle (wing) is not emphasized in the solution, the flat outer folding angle folded outward can be fixed by arbitrarily attaching two adjacent surfaces to each other.

[0130] It should be noted that when the specific structure of the bottom surface 169 is not emphasized in all the embodiments of the present case, its specific structure can refer to the prior art.

[0131] The surface with three vertices is the upright surface 101, and is composed of three vertices of non-flat angles concave inwardly; the bottom surface 169 of the packaging structure 100 is a quadrilateral, which gradually tapers upward to form a line, and is trapezoidal when viewed from the front, that is, the opposite side of the upright surface 101 has a non-flat angle that is obliquely convex outwardly.

[0132] It should be noted that the bottom surface 169 of the above-mentioned packaging structure 100 is a quadrilateral, and the upright surface 101 is an imaginary surface defined by the three vertices or three ridges 203 exposed on the outside of the inner folding angle 104120 that is concavely folded into the package. The opposite side of the inner folding angle 104 has a convex angle that is convex outward. The convex angle can be used to set an opening, and the concave angle plays a supporting and fixing role. Further, it can be used to accommodate the convex angles of the same package. In this way, they can be processed together to achieve the effect of rowing. This embodiment is similar to the appearance of the Ecolean kettle, has a slope and a grip, and has an oblique pouring spout 1053, but the Ecolean kettle needs three irregular sheets to be sealed, while this embodiment is folded from a single packaging sheet. The present packaging structure 100 can replace the Ecolean kettle to reduce both the processing cost and the processing steps.

[0133] The concave non-flat corner may be embedded by the convex non-flat corner, or, The convex non-flat corner can be covered or connected by the concave non-flat corner of another packaging structure 100, so that more than two packages can be neatly arranged or connected, and more than two packaging structures 100 with convex corners can fit together.

[0134] It should be noted that the present invention provides a pot-shaped packaging structure 100, which has outwardly protruding corners and can be used as the outlet of the pot-shaped packaging; it also has inwardly concave corners, so that two identical packages can be assembled and sold like building blocks, and the protruding corners will not become an obstacle to transportation. The two-by-two interlocking structure can effectively protect the packaging structure 100 and the preset opening structure 182 on the packaging structure 100, and can even open the package while disassembling and assembling. It is simple to operate, easy to use, and convenient to transport. Multiple packages can be produced and filled in groups, making production simple and efficient.

[0135] It should be noted that it is not emphasized here that another package with concave angles is consistent with the packaging structure 100 of this case, that is, other packaging structures 100 with suitable concave angles can be matched with the packaging structure 100 of this case. In this way, more packages can be combined at will to achieve sales purposes or bring more other functions.

[0136] like Fig.25 , the two packages are neatly arranged or connected together.

[0137] The vertical surface 101 of the packaging structure 100 is a quadrilateral, and the surface with three vertices is the top surface 105; the bottom edge of the top surface 105 has a connected flat angle, and the included angle between the two sides of the flat angle is less than 90 degrees.

[0138] When the face of the three vertices is the top surface 105, since the top surface 105 and the flat angle connected to the bottom edge of the top surface 105 have a continuous sealing area, when the angle between the bottom edge of the top surface 105 and the side edge of the top surface 105 is less than 90 degrees, in order to keep the top surface 105 and the bottom surface 169 still parallel, the area of ​​the flat angle will naturally become larger, but the bottom edge is a fixed value, then the flat angle with a triangular surface will be longer, and its top angle will be sharper; further, by reducing the angle between the bottom edge of the top surface 105 and the side edge of the top surface 105, and maintaining the top surface 105 horizontal, the flat angle will appear longer, larger in area, and smaller in top angle. A larger flat angle is very suitable for making an opening on it. And by opening the package from the sealing area of ​​the top surface 105, the triangular top surface 105 can be split from it to obtain a larger oblique opening.

[0139] See attached Figure 48-51 The opposite side of the vertical surface 101 has a non-flat angle, the vertex of the side surface 106 of the angle is located on the top surface 105 and is folded inward or outward; the bottom edge of the side surface 106 of the non-flat angle is collinear or non-collinear with the edge of the bottom surface 169.

[0140] It should be noted that the present embodiment includes the following schemes: 1. The non-flat angle is folded inwards, and the bottom edge of the side surface 106 of the opposite non-flat angle is collinear with the edge of the bottom surface 169; 2. The non-flat angle is folded outwards, and the bottom edge of the side surface 106 of the opposite non-flat angle is collinear with the edge of the bottom surface 169; 3. The non-flat angle is folded inwards, and the bottom edge of the side surface 106 of the opposite non-flat angle is not collinear with the edge of the bottom surface 169; 4. The non-flat angle is folded outwards, and the bottom edge of the side surface 106 of the opposite non-flat angle is collinear with the edge of the bottom surface 169. It is further noted that the non-flat angle is a curved cone angle or a pyramid with ridges 203. The opposite side of the vertical surface 101 has a longitudinally arranged flat angle, and the vertex of the side surface 106 of the angle is located on the top surface 105 and folded inwards or outwards; and / or The flat corners folded outward and arranged longitudinally are sealed and cut to form handles, and the package is opened through the flat corners or the top sealing area 192 to present a pot-shaped package with handles.

[0141] It should be noted that the longitudinally arranged flat corner here refers to a corner formed by two adjacent triangular pieces folded inward or outward, arranged longitudinally on opposite sides of the vertical surface 101, and the same corner has a sealing area. Further, this corner is folded outward and the two adjacent triangular pieces are sealed and perforated and cut at the sealing position to form a handle.

[0142] See attached Fig.52 , in the form of a triangular prism, the bottom surface 169 is a triangular surface, and the quadrilateral upright surface 101 can be used as the bottom surface 169 for transportation and use; and / or, The opposite side of the upright surface 101 of the packaging structure 100 in the form of a triangular prism has an integrally formed functional area structure, which can be used as a handle, or a sandwich layer for sealing accessories; and / or The opposite side ribs 203 of the vertical surface 101 of the triangular prism can have openings.

[0143] It should be noted that there are at least the following combinations: 1. The sealed package is in the shape of a triangular prism; 2. The opposite side of the triangular prism vertical surface 101 has a functional area such as a handle, or the double-layer functional area can clamp some accessories, such as straws, soup spoons, condiments, etc.; 3. The package can be opened by setting an opening at the position of the opposite side rib 203 of the triangular prism vertical surface 101; 4. All combinations of the above-mentioned technical features. It should also be noted that the bottom surface 169 and the top surface 105 when the sealed package is filled may be different from the bottom surface 169 actually used. It should be further noted that the position of the opposite side rib 203 of the vertical surface 101 of the triangular prism, that is, the edge of the functional area needs to be sealed to ensure the sealing performance before it can be further used as a functional area. Holes can be punched in the functional area to realize the function of a handle.

[0144] See attached Fig.53, characterized in that it is a triangular prism, the bottom surface 169 is a triangular surface, and the quadrilateral upright surface 101 can be used as the bottom surface 169 for transportation and use, The opposite side of the vertical surface 101 of the packaging structure 100 has an integrally formed functional area structure, which is used as a handle. The vertical surface 101 of the triangular prism has an opening at the position of the opposite side ribs 203, and the packaging structure 100 is a packaging bag.

[0145] It should be noted that the packaging structure 100 here has an opening and is a non-sealed packaging structure 100, which can be understood as a packaging bag for holding items. All embodiments of the present case are folded from a single packaging sheet, and a quadrilateral uses a bottom surface 169 and two triangular sealing surfaces, which can support the packaging bag to stand upright on the table; and the packaging sheets of the two packaging units can complement each other in a centrosymmetrical manner to reduce the generation of waste. However, most packaging bags in the prior art have poor supporting performance, and relatively large pieces of waste need to be cut to form handles. It is necessary to provide a packaging that generates less waste during processing and has strong supporting performance. It is further explained that the two sealing surfaces of the triangular prism can be designed to be inclined toward each other, that is, the two sealing surfaces are not parallel.

[0146] See attached Figure 54-56 , characterized in that the bottom surface 169 of the packaging structure 100 is a quadrilateral, which tapers upward to form a surface with three vertices, and its front view is a trapezoid, that is, the opposite side of the vertical surface 101 also has a surface with three vertices, forming a convex angle, or the bottom surface 169 of the packaging structure 100 is a quadrilateral, which tapers upward to form a top surface 105 with three vertices inclined obliquely, and the opposite side of the vertical surface 101 also has a surface with three vertices, forming a convex angle.

[0147] It should be noted that there are two embodiments, one is that the upper top surface 105 is parallel to the lower top surface 105, and the other is that the upper bottom surface 169 is not parallel to the lower bottom surface 169. The opposite sides of the vertical surfaces 101 of both have oblique non-flat convex corners, and a pouring outlet 1053 can be set, or a gripper that is easy to grasp can be formed when located on a shelf.

[0148] At least one side is gradually tapered toward the opposite side surface 106; The packaging structure 100 has an oblique opening and / or an oblique fluid channel, that is, an opening structure 182 for opening is set on the convex corner, or an opening of the corner sealing area folding line at least located at the concave corner separates the sealing area of ​​the top surface 105 to unseal and form an oblique opening.

[0149] It should be noted that, because it has a triangular structure, there must be one side that tapers toward the opposite side along the triangular structure. In order to facilitate pouring, the packaging structure 100 can open an opening at the convex corner or the triangular top surface 105 to form an outlet. The flat corner (wing) is transformed from a flat corner to a non-flat pyramid corner by unfolding, so that the wing with an opening has a fluid channel through spatial changes.

[0150] See also Figure 1 The area surrounded by tear lines 1801, 1802, and 1803 is the sucking opening.

[0151] The packaging structure 100 is composed of structural lines forming the supporting ridges 203180 of the vertical surface 101 and the bottom surface 169, and the remaining area is divided by the decorative lines 204, and the decorative lines 204 include imaginary lines and / or trace lines. The imaginary lines are the bending axes that make the flat packaging sheet bend into a curved surface, and the trace lines are the ridges 203 that make the flat packaging sheet bend into multiple surfaces. By partially or completely reducing the traces, at least two surfaces or areas are merged into a continuous surface and bent into a curved surface with an imaginary line; or by adding additional traces, a curved surface is split into at least two surfaces, or a plane is split to meet the needs of appearance and design.

[0152] It should be noted that, except for the vertical surface 101 and the bottom surface 169 having supporting ribs 203180, the others are decorative lines 204. For example, the intersection lines of the top surface 105 and the front surface can be eliminated to obtain a smooth curved surface extending from the top surface 105 to the front surface; or such a smooth curved surface or plane can be split into a plurality of expected surfaces to meet the design needs. More traces can be added, and the traces can intersect with each other, but the traces cannot intersect perpendicularly with the imaginary line. The imaginary line is not a real line, but is used to limit the bending direction or bending axis of the curved surface.

[0153] See attached Figures 57-63 A packaging sheet is an integral structure, wherein a vertical surface 101 and a bottom surface 169 are divided by structural lines and used to constitute supporting ribs 203180 thereof, and the remaining area is divided by decorative lines 204, and the decorative lines 204 include imaginary lines and indentation lines, the imaginary lines are the bending axes that make the flat packaging sheet bend into a curved surface, and the indentation lines are the ribs 203 that make the flat packaging sheet bend into multiple surfaces; and the sheet has at least one corner area for bending into a non-flat angle, or at least one triangular top surface 105 area.

[0154] The corner area at least includes a triangular bottom surface 169 and a corner top surface 105 area distributed on both side edges and connected thereto, or the side edges of the corner area are curved lines convex toward the corner area.

[0155] It should be noted that, for the corner area of ​​the inner fold 104 or the outer fold used to form a non-flat angle, the side edge convex outward will obtain a smoother curved support rib 203180, making the package look more rounded and smooth, and forming an arched structure, which is also supportive.

[0156] See attached Figures 64-67 A packaging structure group includes a plurality of packaging structures 100 fixed in series, at least one of the packaging structures 100 is a packaging structure 100 as claimed in claim 2, and when two adjacent packaging structures 100 are connected, the convex corner of one packaging structure 100 is embedded in the concave corner of another packaging structure 100.

[0157] See attached Fig.68 , characterized in that: When the concave corner of the packaging structure 100 is a flat corner, the embedded convex corner is also a flat corner; When the concave angle of the packaging structure 100 is a tapered angle, the embedded convex angle is a tapered angle matching the shape of the concave angle.

[0158] 36. A method for preparing the packaging structure 100 set as claimed in claim 34, characterized in that the preparation is carried out in the order of steps S1, S2, and S3, or in the order of steps S2, S1, and S3, specifically: S1. The bottom surfaces 169 of at least two tubular sheets are sealed so that each tubular sheet is a fillable packaging sheet; S2, arranging at least two cylindrical sheets in the same posture side by side, and correspondingly contacting or connecting two regions of the convex corner and the concave corner to be formed on any two adjacent cylindrical sheets, so that these cylindrical sheets become a sheet group; S3, filling the sheet material group obtained in step S1 or step S2, and sealing the top sealing area 192 to form a packaging structure 100, that is, obtaining a packaging structure 100, and any two adjacent packaging structures 100 are connected by a mutual interlocking structure; The “lower bottom surface 169 ” in step S1 refers to the bottom surface 169 during filling, which is the real lower bottom surface 169 of the packaging structure 100 , or the upper bottom surface 169 of the packaging structure 100 .

[0159] See attached Fig.69 In step S2, the two areas of the convex corner and the concave corner to be formed are tilted according to the packaging structure 100 described in claim 34 through external force interference.

[0160] It should be noted that: 1. There are two methods for making tubular sheets: a continuous packaging sheet with multiple packaging units having indentations or creases is cut into packaging sheets of individual packaging units, and then a tubular blank of individual packaging units vertically sealed in the longitudinal direction of the container is made; or a continuous packaging sheet with multiple packaging units having indentations or creases is formed into a long tubular packaging blank vertically sealed in the longitudinal direction, and then cut into tubular blanks of individual packaging units. That is, the tubular sheet is a single packaging sheet folded and sealed in the longitudinal sealing area.

[0161] 2. This case provides two implementation methods for making 100 groups of packaging structures, including making the bottom surface 169 first and then the top surface 105, and making the top surface 105 first and then the bottom surface 169. It should be noted that when making the top first, it is necessary to pay attention to the fact that the cross section of the bottom is square, and the sealing area of ​​the bottom should be in a different direction from the sealing area of ​​the top, that is, making the top first and then the bottom will cause the bottom corners of the two packages to conflict with each other, and the processing direction of the sealing area needs to be changed. Making the top first is only to avoid the problem of uneven top in processing square brick-type packaging, but there is no such processing worry for inclined top packaging. Multiple packages with bottoms can be placed side by side in the same direction and connected, filled and sealed together, and filled and sealed in groups, which has higher processing efficiency and can effectively improve productivity.

[0162] 5. The traces of the concave corners should be wider to obtain a larger concave space. In essence, any angle formed by curling or folding the packaging material can be folded inward or outward. When any two packages have the same angle, the only difference is folding inward or outward. The two angles can be regarded as complementary, interlocking, and can be put together like concave and convex building blocks. However, considering that the packaging material has thickness, if you want the convex angle to completely enter the concave angle, you need to make the concave angle space larger, that is, make the line width of the folding line on the packaging material used to fold the forming angle wider. Of course, the two angles can be different in nature, as long as the space of the concave angle is large enough to accommodate the existence of the convex angle.

[0163] 6 The connection position is an opening area. Because there is another package as a support, the opening area can be a relatively soft film, or the opening area can be a complete through hole. Then the concave position on the other package acts as the sealing part of the opening area. The periphery of the through hole is sealed at the corresponding position of the other package, and then they are sealed together to achieve a sealing effect. Then the sealed opening structure 182 can be broken by pulling.

[0164] In the embodiment of the sucking opening, the opening area at the convex corner sealing area should be larger, with only a small part remaining at the convex corner, so that the sucking opening will not become the pouring opening 1053, and the resistance when the two packages are separated or opened can be reduced, that is, reducing the connection area of ​​the non-opening area can reduce the resistance when opening. If it is inconvenient to open, the two sides of the concave corner must be lifted to separate from the convex corner. That is, the main difference between the pouring opening 1053 and the sucking opening at the convex corner sealing area is that the sucking opening requires the convex corner sealing area to be incompletely separated, while the pouring opening 1053 requires the convex corner sealing area and even the top sealing area 192 to be separated as much as possible.

[0165] 8. The marks of the two should correspond to each other, so that they are connected and folded together. Since the concave corner needs to be attached to and coupled with the convex corner, the mark of the concave corner area should be wider than the mark of the convex corner. Preferably, the width of the mark of the concave corner area is not less than the measured thickness of the packaging material (there is a measurement error). The concave corner on the square brick, that is, the inserted corner, is not less than the folded thickness of the packaging material.

[0166] 9. There are accessories between any two packaging bodies, located between the side walls of the two; and / or there are connections between the two for fixing the side-by-side packaging group or sealing accessories, or there are wrapping structures for fixing or printing, or a layer of detachable fixing plate. In other words, in order to ensure that the opening between the two packages will not be accidentally opened or broken, the way to reduce the breakage rate is to add a fixing device or structure.

[0167] 10. The sealing area at the corner is larger than the sealing area at other positions.

[0168] The cutting edge of the transverse sealing area is Z-shaped, so that the area of ​​the corner sealing area is larger; two paired and centrally symmetrical packaging sheets or tubular packaging blanks are a cutting unit group, and the packaging sheets or tubular packaging blanks are cut into two packaging units with a Z-shaped cutting edge; and / or the Z-shaped cutting edge is smooth, that is, it is modified while cutting to remove excess parts. That is, in order to make it easier to break the opening structure 182 by pulling the sealing area, whether it is located at a concave or convex corner, for example, in the embodiment of opening the top by inserting the corner, the package can be opened by pulling the sealing area without inserting fingers therein; it can even be applied to the technology of application number 202010010747.0 to solve the embarrassing situation that the incision is located in a narrow transverse sealing area and is difficult to open.

[0169] A packaging structure having a concave corner and a convex corner on the opposite side, or a packaging structure having a concave corner for containing solid particles, semi-liquid and semi-granular liquid food, or semi-solidified contents.

[0170] See attached Fig.70 A method for preparing a concave corner in a packaging structure 100, comprising: S1, arranging at least two cylindrical sheets to be processed in the same posture side by side; or loading 603 cylindrical blanks in the same posture onto a processing trolley 602 having a convex corner 601; S2, contact or connect the two areas of the convex corners 601 and the concave corners to be formed on any two adjacent cylindrical sheets correspondingly, or place at least two processing carriages 602 in the same posture close to each other; S3. When the two are folded, the convex corner 601 of one package or the convex corner 601 of the processing cart 602 is embedded in the concave corner to be formed, and the concave corner is formed by sealing.

[0171] Move at least two processing carriages 602 with convex corners 601 along the track in the same posture, and load 603 the cylindrical sheet onto the processing carriages 602; When the track is running in the first track 605 area, the two processing carriages 602 are running with a spacing between them, and at this time, the cylindrical blank is loaded 603 onto the processing carriage 602; When the track is running in the second track 606 area, the two processing carriages 602 are close together, so that the convex corner 601 of the processing carriage 602 is embedded in the concave corner to be formed, so as to form a preformed concave corner 607 structure; Then seal to form the concave corner.

[0172] The method for preparing a packaging structure according to claim 40 is characterized in that a sealing surface having a concave angle is first produced and then Fill and seal the remaining seal surfaces; or The sealing areas on both sides of the preformed concave angle structure 607 are brought closer to each other by two baffles 608 that are brought closer to each other; or The preformed re-entrant structures 607 of a plurality of packaging structures are sealed simultaneously or successively.

[0173] See attached Fig.70 It should be noted that the two packaging structures 100 are attached to each other with the corresponding areas to be formed and sealed together to obtain The packaging structure 100 is a concave and convex structure, so that a concave corner can be obtained; or the convex corner 601 of the processing trolley 602 is embedded in the molding The concave angle area can also be sealed to obtain a concave angle. Further, at least two processing carriages 602 are located on the same track and are divided into two different speed intervals. There is a gap when running in the first interval, and there is no gap and they squeeze each other when running in the second interval.

[0174] It should be noted that the packaging with the inner folded angle is formed by first making the sealing surface with the inner folded angle and then making another sealing surface by processing the trolley 602. The advantage of doing so is that it can hold food with relatively large particles, such as eight-treasure porridge. If it is done the other way around, when making the inner folded angle, two surfaces are attached to each other. If particles are stuck between the two surfaces, it cannot be perfectly formed, resulting in a lower yield rate. Therefore, when it comes to holding food with relatively large particles, first making the sealing surface with the inner folded angle is more conducive to the yield rate.

[0175] The flat blank is pushed to the loading module, pushed to form a cylindrical blank, and the cylindrical blank is loaded onto the processing trolley. The trolley is located on a track with two speed zones. In the faster running zone, the trolleys move at a certain distance. The cylindrical blank is loaded at the loading module, and then enters the slower running zone, so that the convex corner of the processing trolley is pressed on the area of ​​the previous concave corner to be formed, and this area is tilted into the package. Then it is restricted and pushed by the baffles on the left and right sides of the track, so that the sealing areas on both sides of the concave corner are close to each other, and finally the packaging structure is formed by continuous sealing or one-time sealing of multiple packages; In detail, the folded flat blank is pushed to the loading module by a suction cup or a pick, and the folded flat cylindrical blank is pushed to form a cylindrical blank, and then the cylindrical blank is loaded onto a movable processing cart. The processing cart is located on a circular track and moves. The circular track includes at least a first speed zone and a second speed zone. The faster running area is that the cart is pushed by a transmission mechanism to move at a certain interval, and the cylindrical blank is loaded at the loading module, and then it is pulled into the second speed zone, that is, the second speed zone is the stacking zone, and the processing carts are stacked on each other so that the convex corner of the processing cart is pressed on the area of ​​the previous concave corner to be formed, and this area is dumped into the package, and then it is restricted and pushed by the baffles on the left and right sides of the track, so that the sealing areas on both sides of the concave corner are close to each other, and finally the packaging structure is formed by sealing multiple packages continuously or at one time.

[0176] As mentioned above, the processing equipment includes a continuous track, a trolley running on the track, and at least two different speed zones. The faster speed zone is used to carry the trolley forward, and the slower speed zone is used to stack the trolleys. The trolley has a corner forming component, which cooperates with the position of the corner to be formed on the material and is in the same direction as the track. In detail, the processing trolley has a module that can be used for support, and also has at least one component with an angle that protrudes forward. The posture of each processing trolley is consistent, and the position of the component is determined according to the number of inner corners of the package to be processed. For example, when processing packaging with a single concave angle, this component can be set in front of the travel direction, with the convex angle facing the concave angle area of ​​the cylindrical blank loaded on the previous processing trolley, and the bottoms of all components are installed on the chassis of the processing trolley. The traction mechanism pulls the chassis to move on the track. When it is pulled to the slow second track area, the speed is slowed down, or the trolley is directly pushed into the track area without traction, so that all the processing trolleys stacked on the second track area move forward as a whole, and the frontmost processing trolley is pushed away from the second track area to enter the first track area or other track areas of the circular track to continue traction; for packaging with double concave angles, the first processing trolley only has a support module, and the second processing trolley adjacent to it has a component with convex angles on both sides, and the direction of the angle is consistent with the travel direction, facing the concave angle area of ​​the cylindrical blank loaded on the previous processing trolley. Similarly, the first and second processing trolleys travel on the first speed area at a certain interval and add cylindrical blanks, and are stacked on the track in the second speed area. The first and second processing trolleys are combined into a group, and there are other groups of processing trolleys located before and after them. The processing equipment also includes a stacking unit for stacking folded flat blanks, and then pushing the folded flat blanks to the loading module through suction cups or picks, and pushing the flat cylindrical blanks to form cylindrical blanks, and then loading the cylindrical blanks onto a movable processing trolley. The processing trolley is located on a circular track and moves. The circular track includes at least a first speed zone and a second speed zone. The faster running area is to push the trolley at a certain distance through a transmission mechanism, load the cylindrical blanks at the loading module, and then be pulled into the second speed zone, that is, the second speed zone is the stacking zone, and the two processing trolleys are stacked on each other so that the convex corner of the processing trolley is pressed on the area of ​​the previous concave corner to be formed, and this area is dumped into the package, and then it is restricted and pushed by the baffles on the left and right sides of the track, so that the sealing areas on both sides of the concave corner are close to each other, and finally the packaging structure is formed by sealing multiple packages continuously or at one time. The processing trolley has a module that can be used for support, and at least one component with a forward protruding corner. The posture of each processing trolley is consistent, and the number of this component can be determined according to the number of inner corners of the packaging that needs to be processed. For example, when processing the roof-type packaging of the prior art, that is, the packaging with double concave corners, two convex corner components can be added to the front and rear of the module used for support on the processing trolley (the corners face the running direction). This component is not connected to the support. The bottom of all components is installed on the chassis of the processing trolley. The traction mechanism pulls the chassis to move on the track. When it is pulled to the slow second track area, the speed can be slowed down, or the trolley can be directly pushed into the track area without traction, so that all the processing trolleys stacked on each other in the second track area move forward as a whole, and the frontmost processing trolley is pushed away from the second track area to enter the first track area or other track areas of the circular track to continue traction. The above is the original text of PCT / CN2023 / 091891, 2023.4.28, priority text. The following further explains that the advantage of doing so is that, first of all, instead of processing individual packages one by one, the concave corners are automatically formed in rows. As mentioned above, the packaging is formed by squeezing each other between processing workshops or packages. In this way, the processing speed will no longer be limited by the most complicated process of processing concave corners. The prior art requires the packaging to be pushed up and processed one by one with external force, and the technical solution provided in this case effectively solves this problem. The processing speed at this stage is no longer limited by the speed of the squeezing process of this area as in the prior art. According to the method proposed in this case, as long as the packaging is loaded onto the processing trolley or loaded onto the assembly line quickly enough, the sealing is actually the existing rolling sealing or mechanical sealing in rows. And the biggest advantage is that this is mandatory to make the packaging concave corners according to the appearance provided by the processing trolley, instead of squeezing it and sending it to the sealing process as in the prior art. The prior art has a high unreliability and a low yield rate because the processing is not precise enough. Of course, the same principle applies to processing two packages together directly. After processing a row, the speed will definitely be increased, and molds will be formed between each other, which are mandatory before sealing. Unlike the prior art, the concave corners are squeezed with external force to loosen them. Of course, there are no flaws in the prior art, because the packaging materials processed by the prior art are hard enough and have enough layers, and they tend to fold inward with a slight squeeze. However, if softer packaging materials are used, the prior art will squeeze and loosen them slightly, and the packaging will naturally rebound to its initial state. There is no point in squeezing like this, because the packaging is still free before the final sealing, and there is no forced fixation of a shape. Therefore, the main advancement of this case is reflected in the fact that the concave corners have a forced shape to enter the sealing process, whether it is through fixing the packages to each other or fixing the shape through the mold provided by the processing trolley, and finally entering the sealing stage, they have a fixed shape. In addition, the track is divided into the extrusion area and the loading area. The extrusion area is reflected in that you only need to push the trolley into this slow track, and it will naturally be formed through the extrusion of the trolley, so that the trolley loses power and passively squeezes each other in this interval, and pushes this area one by one, and naturally squeezes out the processed end. This also reduces a lot of control modules for this processing stage. Only one conveying device is needed to convey the trolley and control the speed of feeding into this area. The speed can be as fast as you want. They must squeeze each other to get out of this process track area, so at least in this process, you can rest assured that the production of the concave angle will not fail due to the processing equipment, that is, as long as you go in, you can get a concave angle.A further advantage is that the concave corner and the convex corner can be connected to each other and sealed together, which not only has the above processing advantages, but can also be processed in groups. The two adjacent surfaces are squeezed and sealed into two triangular structures that are put together, which improves stability and improves stability during transportation. In addition, the two areas of the concave corner and the convex corner are connected to each other, so that a preset structure set on a corner can be realized, which can be winged and destroyed when the user separates the packaging group, and because the periphery of this opening is wrapped and nested with each other, this position will be very hygienic, thus reflecting the advanced nature of this case. In summary, there is no need to process the concave corners to be formed on the package one by one, it can adapt to more packaging materials without being limited to existing packaging materials of a specific hardness, fast processing in rows, automatic forming and forced shape of the concave corners, and the processing speed can be controlled only by the track transmission speed without the need for complex equipment to produce the concave corners, which saves costs. These are the advanced nature of this method.

[0177] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing a concave corner in a packaging structure, characterized in that: S1. Arrange at least two tubular blanks to be processed in the same posture side by side; or load the tubular blanks in the same posture onto a processing trolley with a convex angle; S2, contacting or connecting two areas of the convex corners and concave corners to be formed on any two adjacent tubular blanks correspondingly, or placing at least two processing carriages in the same posture close to each other; S3. When the two are folded, the convex corner of one of the packages or the convex corner of the processing cart is embedded in the concave corner to be formed, and the concave corner is formed by sealing.

2. The processing method according to claim 1, characterized in that: At least two processing carriages with convex corners are moved in the same posture along the same track, and the cylindrical blank is loaded onto the processing carriages; When running in the first speed zone of the track, the two processing carts maintain a distance between each other and are used to load the tubular blanks onto the processing carts; when running in the second speed zone of the track, the two processing carts are close together so that the convex corners of the processing carts are embedded in the concave corners to be formed to form a preformed concave corner structure; and then they are sealed to form the concave corners.

3. The processing method of the packaging structure according to claim 2, characterized in that: First make the sealing surface with a concave angle, then fill it and then seal the remaining sealing surface; or The sealing areas on both sides of the preformed concave angle structure are brought closer to each other by two baffles approaching each other; or The preformed reentrant structures of a plurality of packaging structures are sealed simultaneously or successively.

4. The processing method according to claim 1, characterized in that: The flat blank is pushed to the loading module, pushed to form a cylindrical blank, and the cylindrical blank is loaded onto the processing trolley. The trolley is located on a track with two speed zones and travels at a certain distance between the trolleys in the faster running area. The cylindrical blank is loaded at the loading module and then enters the slower running area, so that the convex corner of the processing trolley is pressed on the area of ​​the previous concave corner to be formed, and this area is dumped into the package. It is then restricted and pushed by the baffles on the left and right sides of the track, so that the sealing areas on both sides of the concave corner are close to each other. Finally, the packaging structure is formed by sealing multiple packages continuously or at one time.

5. The processing equipment used in the processing method according to claim 4 is characterized in that: It comprises a continuous track, on which a trolley runs, and which has at least two different speed zones. The faster speed zone is used to carry the trolley forward, and the slower speed zone is used to stack the trolleys. The trolley has a component for forming an angle, which cooperates with the position of the angle to be formed on the material and is in the same direction as the track.

6. The processing equipment according to claim 5, characterized in that: The processing trolley has a module that can be used for support, and also has at least one component with an angle that protrudes forward. The posture of each processing trolley is consistent. The position of the component is determined according to the number of inner corners of the package to be processed. For example, when processing a package with a single concave angle, this component can be set in front of the travel direction, with the convex angle facing the concave angle area of ​​the cylindrical blank loaded on the previous processing trolley, and the bottom of all components is installed on the chassis of the processing trolley. The traction mechanism pulls the chassis to move on the track. When it is pulled to the slow second track area, the speed is slowed down, or the trolley is directly pushed into the track area without pulling, so that all the processing trolleys stacked on each other in the second track area move forward as a whole, and the frontmost processing trolley is pushed away from the second track area to enter the first track area or other track areas of the circular track to continue pulling; For processing double concave angle packaging, the first processing trolley only has a supporting module, while the second processing trolley adjacent to it has a component with convex angles on both sides, and the direction of the angles is consistent with the travel direction, facing the concave angle area of ​​the tubular blank loaded on the previous processing trolley. Similarly, the first and second processing trolleys travel on the first speed zone at a certain interval and add tubular blanks, and are stacked on each other on the track in the second speed zone. The first and second processing trolleys are combined into a group, and there are other groups of processing trolleys located before and after them.

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