A folding bread paper holder

Abstract

The application relates to a folding bread paper holder, which belongs to the packaging technical field and is a foldable flat plate structure having a folding state and a use state. The unfolded structure comprises a bottom plate, a plurality of main side plates, a plurality of clamping body plates and a plurality of flaps. The main side plates are connected at the bottom side edges and are divided into a first part, a second part and a third part through first and second crease lines. The clamping body plates are connected with the third part, and the flaps are connected with the clamping body plates. In the folding state, the third part is folded outward along the second crease line, the first part is folded outward along the first crease line, the clamping body plates are folded with the main side plates, and the flaps are bonded with the first part of the adjacent main side plates through bonding areas to form a multi-layer flat plate structure. In the use state, the multi-layer flat plate structure is unfolded to form a prism-shaped tray structure with an upward opening. The application is pre-folded by the manufacturer, so that the transportation and storage volume is reduced, and the extrusion loss is prevented. The user only needs to simply stretch to form the structure, so that the labor cost is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of packaging technology, and in particular to a foldable bread tray. Background Technology

[0002] As a daily consumer product, bread packaging design needs to consider factors such as freshness preservation, shape retention, display, and logistical convenience. The packaging not only needs to slightly extend the product's shelf life but also requires structural support to prevent deformation due to its own weight or external pressure during display and handling. Currently, mainstream premium bread packaging solutions generally adopt a combination of "paper tray + transparent bag": an open paper tray serves as the internal support structure, while an OPP plastic transparent bread bag provides dust protection and display functionality. The paper tray, as the core support component, requires structural stability on the shelf, relatively high rigidity and hardness to minimize deformation, while also considering the optimal stacking density, the self-folding capability of the paper tray, and its transportability.

[0003] Currently, most bread paper trays are foldable. In terms of logistics and usage, foldable paper trays mainly use two transportation modes: the first is a three-dimensional transportation mode, in which the paper tray is folded and formed at the manufacturer and then transported directly to the bakery in a three-dimensional supporting state; the second is a flat transportation mode followed by manual gluing, in which the paper tray is flat when it leaves the factory, and bakery operators need to manually fold and glue it to form a three-dimensional paper tray according to the instructions.

[0004] The increased volume of paper trays transported in three-dimensional form leads to higher transportation and storage costs. Furthermore, these trays are more susceptible to compression and deformation during transport, resulting in material waste. Flat-pack paper trays require additional manpower and time for manual folding and securing with glue or tape. This process is not only cumbersome and time-consuming, but uneven glue application or tape residue can also pose food safety hazards and fail to meet food packaging hygiene standards. Utility Model Content

[0005] The purpose of this application is to provide a foldable bread tray to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] This application provides a foldable bread tray, which is a foldable flat structure with a folded state and a usable state. Its unfolded structure includes a base plate, multiple main side plates, multiple clamping plates, and multiple flaps. The base plate has a regular polygonal structure and an even number of bottom side edges. The number of main side plates is half the number of bottom side edges, and they are connected to the bottom side edges at intervals. The main side plates are provided with a first fold line and a second fold line to divide the main side plates into a first part, a second part, and a third part that are connected in sequence. One side edge of a single clamping plate is connected to the third part of a single main side plate. A single flap is connected to the other side edge of a single clamping plate and is provided with an adhesive area.

[0008] In the folded state, the third part folds outward along the second fold line, the first part folds outward along the first fold line, the clamping plate folds along the main side plate, and the flap is bonded to the first part of the adjacent main side plate through the adhesive area, so that the paper tray forms a multi-layer flat structure.

[0009] When in use, the multi-layer flat structure unfolds to form an upward-opening frustum-shaped tray structure.

[0010] Furthermore, the base plate has a regular hexagonal structure, and there are three main side plates, three interlocking plates, and three flaps.

[0011] Furthermore, the main side panel is an isosceles trapezoidal structure, which includes a first side and a second side that are parallel to each other, as well as a third side and a fourth side that connect the two sides. The first side is connected to the bottom side, and the length of the first side is the same as the length of the bottom side. The length of the second side is greater than the length of the first side. The first crease line and the second crease line both extend from the first side to the second side, and the extension directions of the first crease line and the second crease line intersect, so that the fourth side forms the side of the first part, the first side forms the side of the second part, and the third side forms the side of the third part.

[0012] Furthermore, the first crease line is a line segment formed by rotating the fourth side about its intersection with the bottom side by a first angle and extending it to intersect with the second side;

[0013] The second crease line is formed by rotating the third side around its intersection with the bottom side by a second angle and extending it to intersect the second side.

[0014] Furthermore, the first angle is 60°, and the second angle is 60°.

[0015] Furthermore, the clamping plate is an isosceles trapezoidal structure, which includes a fifth side and a sixth side that are parallel to each other, and a seventh side and an eighth side that connect the two sides. The seventh side is connected to the third side, and the length of the seventh side is the same as the length of the third side.

[0016] Furthermore, the length of the sixth side is greater than the length of the fifth side, and the length of the fifth side is the same as the length of the bottom side.

[0017] Furthermore, the flap includes a first side edge, which is connected to an eighth side edge. The width of the flap gradually decreases outward from the first side edge, and an adhesive area is formed on one end face of the flap.

[0018] Furthermore, the adhesive area is coated with adhesive, and the flap is bonded to the first part so that the eighth side coincides with the fourth side.

[0019] Furthermore, the paper tray is a kraft paper tray structure or a cardboard paper tray structure.

[0020] The beneficial effects of the technical solution provided in this application include at least the following:

[0021] This application divides the paper tray into a base plate, main side plates, and a clamping plate. By setting a first fold line and a second fold line on the main side plate, the manufacturer can complete the folding operation before leaving the factory. After folding, it has a flat structure, which reduces the volume of transportation and storage, is not easily deformed by squeezing, reduces transportation losses, and users only need to stretch it to unfold it into shape, effectively reducing labor costs. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the unfolded structure of the paper tray in one embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the paper tray in a folded state according to one embodiment of the present invention;

[0025] Figure 3 This is a structural schematic diagram of the paper tray in use in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the paper tray in its initial unfolded state in one embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the edge marking of the paper tray in one embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the first and second fold lines drawn on the paper tray in one embodiment of this utility model;

[0029] Figure 7 This is a schematic diagram of the paper tray completing the drawing of crease lines in one embodiment of this utility model;

[0030] Figure 8This is a schematic diagram of the paper tray with markings in one embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram illustrating the use of the paper tray with markings in one embodiment of this utility model.

[0032] Explanation of key figure labels:

[0033] 100. Base plate; 110. Bottom side edge; 200. Main side plate; 210. First crease line; 220. Second crease line; 231. First part; 232. Second part; 233. Third part; 241. First side; 242. Second side; 243. Third side; 244. Fourth side; 300. Sandwich plate; 311. Fifth side; 312. Sixth side; 313. Seventh side; 314. Eighth side; 400. Flap piece; 410. First side edge; 420. Adhesive area. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "multiple" means two or more.

[0036] Example

[0037] Please see Figures 1-9A foldable bread tray is disclosed. The tray has a foldable flat structure and can be used in both folded and unfolded states. Its unfolded structure includes a base plate 100, multiple main side plates 200, multiple clamping plates 300, and multiple flaps 400. The base plate 100 has a regular polygonal structure and an even number of bottom side edges 110. The number of main side plates 200 is half the number of bottom side edges 110, and they are connected to the bottom side edges 110 at intervals. Each main side plate 200 has a first crease line 210 and a second crease line 220 to divide it into a first part 231, a second part 232, and a third part 233 connected sequentially. One side of each clamping plate 300 is connected to the third part 233 of each main side plate 200. Each flap 400 is connected to the other side of each clamping plate 300 and has an adhesive area 420.

[0038] In the folded state, the third part 233 folds outward along the second fold line 220, the first part 231 folds outward along the first fold line 210, the clamping plate 300 folds along the main side plate 200, and the flap 400 is bonded to the first part 231 of the adjacent main side plate 200 through the adhesive area 420, so that the paper tray forms a multi-layer flat structure.

[0039] When in use, the multi-layer flat structure unfolds to form an upward-opening frustum-shaped tray structure.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 3As shown, the paper tray can be formed by folding a single sheet of cardboard. The unfolded structure of the paper tray includes a base plate 100, main side plates 200, a clamping plate 300, and a flap 400. The base plate 100, as the bottom structure of the paper tray, is the basic support component. It is a regular polygonal structure, and the number of its bottom side edges 110 is an even number (for example, the base plate 100 is a regular hexagonal or regular octagonal structure). Its side length is adapted to the bottom size of the bread to be supported, so as to better support the bread. The number of main side plates 200 is half the number of bottom side edges 110 on the base plate 100. That is, when the main side plate 200 is a regular octagonal structure, the number of bottom side edges 110 is eight, so the number of main side plates 200 is four; when the main side plate 200 is a regular hexagonal structure, the number of bottom side edges 110 is six, so the number of main side plates 200 is three. Multiple main side panels 200 are evenly spaced at one bottom side edge 110 along the circumference of the main side panel 200. That is, a main side panel 200 is connected to the bottom side edge 110 of the base plate 100 every other bottom side edge 110, and the bottom edge of the main side panel 200 is connected to the bottom side edge 110 by an indentation line, which is a non-fracture connection, so that the main side panel 200 can be folded relative to the base plate 100. The main side panel 200 is also provided with a first fold line 210 and a second fold line 220, which are connected to the main side panel. The edge line of 200 divides the main side panel 200 into a first part 231, a second part 232 and a third part 233 connected in sequence. The first part 231 is connected to the second part 232 through a first crease line 210, and the second part 232 is connected to the third part 233 through a second crease line 220. This allows the first part 231 to be folded relative to the second part 232 through the first crease line 210, and the third part 233 to be folded relative to the second part 232 through the second crease line 220.

[0041] In addition, the number of clamping plates 300 and flaps 400 is the same as the number of main side plates 200. Each clamping plate 300 is connected to a main side plate 200. One side of the clamping plate 300 is also connected to the side of the third part 233 by a crease line, so that the clamping plate 300 can be folded relative to the third part 233. Each flap 400 is connected to a clamping plate 300. One side of the flap 400 is connected to the side of the clamping plate 300 opposite to the third part 233. The flap 400 is provided with an adhesive area 420 for bonding the first part 231 on the adjacent main side plate 200.

[0042] In the two states of this paper tray:

[0043] Folded state (mainly during transportation and storage)

[0044] The manufacturer completes the folding process before the product leaves the factory.

[0045] First, fold the third part 233 of the main side panel 200 outward by 180° along the second fold line 220, causing the clamping plate 300 to flip synchronously. Fold all the third parts 233 of the main side panels 200 in this manner. Then, fold the first part 231 of the main side panel 200 outward by 180° along the first fold line 210. Fold all the first parts 231 of the main side panels 200 in this manner. After that, attach and fix the flap 400 to the first part 231 of the adjacent main side panel 200 through its adhesive area 420. This will eventually form a multi-layered flat structure, which is convenient for stacking, transportation and storage.

[0046] Usage status (mainly during the bread-supporting stage)

[0047] Bakery staff can quickly set up without tools:

[0048] The main side plates 200 are stretched outward to unfold the multi-layered flat structure. Then, the second part 232 is folded inward along the edge line connecting it to the bottom side 110, so that the paper tray unfolds into a truncated pyramidal structure tray with the opening facing upward. The first part 231, the second part 232, the third part 233 of the main side plates 200 and the clamping plate 300 sequentially form a truncated pyramidal side wall, which can directly place bread. The support is achieved by relying on the stiffness of the paper material and the stability of the truncated pyramidal structure.

[0049] In the above structure, by dividing the paper tray into a base plate 100, main side plates 200, and a clamping plate 300, and by setting a first fold line 210 and a second fold line 220 on the main side plate 200, the manufacturer can complete the folding operation before leaving the factory. After folding, it has a flat structure, which reduces the transportation and storage volume compared to traditional three-dimensional paper trays, significantly reducing logistics costs. Moreover, the stress is evenly distributed when stacking multiple layers, making it less prone to deformation due to compression and reducing transportation losses. The manufacturer pre-glues the flaps 400 to the main side plates 200, and the user only needs to stretch it to unfold it into shape, without the need for complicated manual folding or applying glue, effectively reducing labor costs. The combination design of the frustum-shaped structure and the clamping plate 300 makes the paper tray have a uniform stress distribution during use, and its rigidity and hardness are better than traditional square paper trays, which can effectively prevent bread from deforming due to its own weight or external pressure. The one-piece molding process reduces splicing gaps and improves the overall structural integrity.

[0050] In the specific structure of the base plate 100, the base plate 100 is a regular hexagonal structure, and there are three main side plates 200, clamping plates 300 and flaps 400.

[0051] In this embodiment, as Figure 1As shown, the base plate 100 is a regular hexagonal base plate 100, which has six identical bottom side edges 110, and three main side plates 200, three clamping plates 300 and three flaps 400. The regular hexagonal base plate 100 and the three symmetrically distributed main side plates 200 form an equilateral triangle support pattern. After unfolding, the side walls of the frustum-shaped structure are subjected to uniform stress, which improves the resistance to lateral pressure. The three main side plates 200 are distributed at intervals. When folded, the flaps 400 are precisely bonded to the adjacent main side plates 200 to form a flat structure, saving transportation and storage space. The symmetrical design means that there is no need to distinguish the direction during the folding process. Manufacturers can complete the folding and bonding through automated equipment, further improving production efficiency.

[0052] Furthermore, the symmetrical hexagonal shape has a symmetrical aesthetic, which can better highlight the three-dimensionality of the bread than the traditional square paper tray, enhancing the visual appeal of the display case. The even distribution of the side walls ensures that the bread is subjected to consistent force from all angles, which can maintain the original shape after baking and extend the time when it is in its best condition.

[0053] In the specific structure of the main side panel 200, the main side panel 200 is an isosceles trapezoidal structure, which includes a first side 241 and a second side 242 that are parallel to each other, and a third side 243 and a fourth side 244 that connect the two sides. The first side 241 is connected to the bottom side 110, and the length of the first side 241 is the same as the length of the bottom side 110. The length of the second side 242 is greater than the length of the first side 241. The first crease line 210 and the second crease line 220 both extend from the first side 241 to the second side 242, and the extension directions of the first crease line 210 and the second crease line 220 intersect, so that the fourth side 244 forms the side of the first part 231, the first side 241 forms the side of the second part 232, and the third side 243 forms the side of the third part 233.

[0054] In this embodiment, as Figure 1As shown, the main side plate 200 has an isosceles trapezoidal structure. The first side 241 is the lower base connected to the bottom side 110, and the second side 242 is the upper base parallel to the first side 241. The length of the second side 242 is greater than that of the first side 241, while the length of the first side 241 is the same as that of the bottom side 110 of the base plate 100. This creates a frustum structure with a large opening when unfolded. The sides of the main side plate 200 are the third side 243 and the fourth side 244, which have the same length. The first crease line 210 and the second crease line 220 on the main side panel 200 both extend from the first side 241 to the second side 242. The extension directions of the first crease line 210 and the second crease line 220 intersect and are symmetrically arranged along the center line of the main side panel 200. The first crease line 210 extends obliquely from the endpoint of the first side 241 (near the endpoint of the fourth side 244) towards the left endpoint of the second side 242; the second crease line 220 extends obliquely from the endpoint of the first side 241 (near the endpoint of the third side 243) towards the right endpoint of the second side 242. The two crease lines divide the main side panel 200 into three regions.

[0055] The first part 231 is enclosed by the fourth side 244, the first crease line 210 and part of the second side 242, forming a triangular structure; the second part 232 is enclosed by the first side 241, the first crease line 210, the second crease line 220 and part of the second side 242; the third part 233 is enclosed by the second crease line 220, the third side 243 and part of the second side 242, forming a triangular structure, and is symmetrical to the first part 231.

[0056] The main side plate 200 adopts an isosceles trapezoidal structure, which, together with the intersecting first fold line 210 and second fold line 220, makes the folding angle of the three parts geometrically compatible with the angle of the regular hexagonal base plate 100. When folded, each side can fit completely together, avoiding the problem of folding misalignment. After unfolding, the first part 231, the second part 232, and the third part 233 form a "triangular support" through the intersecting fold lines. Together with the fit between the clamping plate 300 and the adjacent main side plate 200, it further improves the overall resistance to deformation.

[0057] Specifically, the first crease line 210 is a line segment formed by rotating the fourth side 244 about its intersection with the bottom side 110 by a first angle and extending it to intersect with the second side 242; the second crease line 220 is a line segment formed by rotating the third side 243 about its intersection with the bottom side 110 by a second angle and extending it to intersect with the second side 242. The first angle is 60°, and the second angle is 60°.

[0058] In this embodiment, as Figure 1As shown, the first crease line 210 is based on the fourth side 244 of the main side plate 200 and rotates 60° around the intersection of the fourth side 244 and the bottom side 110 (i.e., the endpoint of the bottom side 110) to obtain a virtual edge line formed on the main side plate 200 after rotation. The virtual edge line is then extended to intersect with the second side 242 of the main side plate 200 at a point. This point is connected to the intersection of the fourth side 244 and the bottom side 110 to form the first crease line 210.

[0059] Correspondingly, the second crease line 220 is based on the third side 243 of the main side plate 200 and rotated 60° around the intersection of the third side 243 and the bottom side 110 (i.e., the endpoint of the bottom side 110) to obtain a virtual edge line formed on the main side plate 200 after rotation. The virtual edge line is then extended to intersect with the second side 242 of the main side plate 200 at a point. The point is then connected to the intersection of the third side 243 and the bottom side 110 to form the second crease line 220.

[0060] The first crease line 210 and the second crease line 220 are formed by rotating the fourth side 244 and the third side 243 by 60°, respectively. They are geometrically complementary to the 120° interior angle of the regular hexagonal base plate 100, so that the folding angle of the three parts of the main side plate 200 is perfectly matched with the angle of the base plate 100. When folding, the edges fit together seamlessly, avoiding the misalignment problem of parallel creases. The symmetrical rotation angle design ensures that the three main side plates 200 are subjected to uniform force, improving the structural strength of the frustum-shaped tray after unfolding.

[0061] In the specific structure of the clamping plate 300, the clamping plate 300 is an isosceles trapezoidal structure, which includes a fifth side 311 and a sixth side 312 that are parallel to each other, and a seventh side 313 and an eighth side 314 that connect the two sides. The seventh side 313 is connected to the third side 243, and the length of the seventh side 313 is the same as the length of the third side 243. The length of the sixth side 312 is greater than the length of the fifth side 311, and the length of the fifth side 311 is the same as the length of the bottom side 110.

[0062] In this embodiment, the clamping plate 300 is an isosceles trapezoidal structure adapted to the main side plate 200 and the bottom plate 100. It includes a fifth side 311 of the lower base, a sixth side 312 of the upper base, and two side sides, a seventh side 313 and an eighth side 314. The lengths of the two side sides of the clamping plate 300 are the same as the lengths of the two side sides of the main side plate 200. The seventh side 313 of the clamping plate 300 is connected to the third side 243 of the main side plate 200, and the two sides have the same length. The length of the sixth side 312 of the clamping plate 300 is greater than the length of the fifth side 311. The length of the fifth side 311 is the same as the length of the bottom side 110. After the paper tray is unfolded, the fifth side 311 of the clamping plate 300 fits against the bottom side 110 that is not connected to the main side plate 200, so that the clamping plate 300, the main side plate 200 and the bottom plate 100 form a closed frustum structure.

[0063] The clamping plate 300 adopts an isosceles trapezoidal structure. The seventh side 313 is of the same length as the third side 243 of the main side plate 200 and is completely connected to form a close fit structure side by side. The fifth side 311 is of the same length as the bottom side 110, so that the clamping plate 300, the main side plate 200 and the bottom plate 100 form a geometric complement. After unfolding, it perfectly matches the side wall slope of the frustum-shaped tray, improving the resistance to deformation.

[0064] In the specific structure of the flap 400, the flap 400 includes a first side 410, which is connected to the eighth side 314. The width of the flap 400 gradually decreases outward from the first side 410. An adhesive area 420 is formed on one end face of the flap 400. The adhesive area 420 is coated with adhesive, and the flap 400 is bonded to the first part 231, so that the eighth side 314 coincides with the fourth side 244.

[0065] In this embodiment, the first side 410 of the flap 400 is connected to the eighth side 314 of the clamping plate 300. The length of the first side 410 is the same as the length of the eighth side 314. The flap 400 adopts a gradient width design, and its width gradually decreases from the first side 410 connected to the clamping plate 300 along its extension direction, thereby forming a precisely fitted connection structure with the main side plate 200. This allows the eighth side 314 of the clamping plate 300 to coincide with the fourth side 244 of the main side plate 200 after it is bonded to the third part 233 through the adhesive area 420, thus avoiding misalignment between the adhesive area 420 and the third part 233 and affecting the aesthetics. The end face of the flap 400 is provided with an adhesive area 420, which can be coated with food-grade pressure-sensitive adhesive and covered with release paper (silicone paper) for protection. The position of the adhesive area 420 is precisely aligned with the outer side of the first part 231 of the main side plate 200, ensuring that it fits snugly with the first part 231 after bonding.

[0066] In addition, the paper tray is made of kraft paper or cardboard. The paper tray uses food-grade kraft paper or cardboard as a single base material and is made through an integrated cutting and creasing process. Kraft paper has high folding resistance, which can effectively adapt to the repeated operation requirements of the paper tray "folding-unfolding". Its natural breathability can reduce the condensation of moisture on bread caused by stuffiness and extend the shelf life.

[0067] Cardboard material has high stiffness, and the side wall verticality error of the frustum structure after unfolding is small, which can further improve the support stability. In addition, the surface is smooth, and brand logos or patterns can be directly printed to enhance the product display effect.

[0068] In the actual production process of this paper tray:

[0069] Draw a planar development of a regular hexagonal frustum with a regular hexagonal face as the base on kraft paper or cardstock, such as... Figure 4 As shown in the diagram, the unfolded figure includes a base plate 100, three main side plates 200, three clamping plates 300, and three flaps 400.

[0070] exist Figure 4 Based on this, the intersection points of each edge are marked. The intersection points connecting the first main side plate 200 and the base plate 100 are recorded as points A and B, respectively, while the intersection points of the remaining edges of the main side plate 200 are recorded as points A1 and B1. The intersection points connecting the second main side plate 200 and the base plate 100 are recorded as points C and D, respectively, while the intersection points of the remaining edges of the main side plate 200 are recorded as points C1 and D1. The intersection points connecting the third main side plate 200 and the base plate 100 are recorded as points E and F, respectively, while the intersection points of the remaining edges of the main side plate 200 are recorded as points E1 and F1. Similarly, the intersection points connecting one clamping plate 300 and the flap 400 are recorded as points A' and A'1, while the intersection points of the remaining clamping plates 300 and the flap 400 are recorded as points C', C'1, E', and E'1, respectively. Figure 5 As shown.

[0071] Using A as the rotation point, determine the new auxiliary rotation point P1 at rotation point A: rotate line segment AA1 clockwise around point A by the first angle θ (θ=60°) and extend it to intersect A1B1 at P1, connect AP1, and draw the first crease line 210;

[0072] Next, using B as the rotation point, determine the new auxiliary rotation point Q1 at rotation point B: Rotate line segment BB1 counterclockwise around point B by a second angle φ (φ = 60°), extend it, intersecting A1B1 at Q1, connect BQ1, and draw the second crease line 220, as shown. Figure 6 As shown.

[0073] Using C, D, E, and F as rotation points in sequence, determine new auxiliary rotation points P2, Q2, P3, and Q3 at corresponding positions, and connect CP2, DQ2, EP3, and FQ3 in sequence to draw the remaining first crease line 210 and second crease line 220, as follows. Figure 7 As shown.

[0074] Creasing and cutting: in Figure 4 The process lines in the above steps are completed on the paper tray body by a flatbed die-cutting machine, including AP1, CP2, and EP3 segments in the first crease line 210, BQ1, DQ2, and FQ3 segments in the second crease line 220, all edge lines of the paper tray itself, bottom edge AB, BC, CD, DE, EF, AF and side edge AA1, BB1, C'C'1, CC1, DD1, EE1, E'E'1, FF1, and A'A'1.

[0075] Folding and gluing: such as Figure 8 As shown, glue is applied to the bonding area 420 of the flap 400. Then, the first main side panel 200 is folded outward by 180° along the second crease line 220BQ1, and the second main side panel 200 is folded outward by 180° along the first crease line 210CP2, so that the flap 400 is bonded to it, and CC1 and C'C'1 coincide, thus completing the bonding. Similarly, the second main side panel 200 is folded outward by 180° along the second crease line DQ2, and the third main side panel 200 is folded outward by 180° along the first crease line 210EP3, so that the flap 400 is bonded to the main side panel 200. The third main side panel 200 is folded outward by 180° along the second crease line 220FQ3, and the first main side panel 200 is folded outward by 180° along the first crease line 210AP1, so that the flap 400 is bonded to the main side panel 200. This completes the production of the folded hexagonal frustum bread tray.

[0076] When using: such as Figure 9 As shown, the glued clamp plate 300 and the main side plate 200 are pushed outward, and the second part 232 on the main side plate 200 is folded inward along the AB, CD and EF lines respectively, so as to form a hexagonal truncated tray structure with the opening facing upward.

[0077] In the embodiments disclosed in this application, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this application according to the specific circumstances.

[0078] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A folded bread wrapper characterized by, The paper tray is a foldable flat structure, and has a folded state and a used state. Its unfolded structure includes: The base plate has a regular polyhedral structure and an even number of bottom sides; Multiple main side panels, the number of which is half the number of the bottom side panels, are connected to the bottom side panels at intervals. The main side panels are provided with a first crease line and a second crease line to divide the main side panels into a first part, a second part and a third part connected in sequence. Multiple clamping plates, one side of a single clamping plate being connected to the third portion of a single main side plate; Multiple flaps, each flap being connected to the other side of a single clamping plate, and having an adhesive area; In the folded state, the third part folds outward along the second crease line, the first part folds outward along the first crease line, the clamping plate folds along the main side plate, and the flap is bonded to the first part of the adjacent main side plate through the adhesive area, so that the paper tray forms a multi-layer flat structure. In the usage state, the multi-layer flat plate structure unfolds to form an upward-opening frustum-shaped tray structure.

2. The folded bread wrapper of claim 1 wherein, The base plate has a regular hexagonal structure, and there are three of each of the main side plate, the clamping plate, and the flap.

3. The foldable bread tray according to claim 2, characterized in that, The main side panel is an isosceles trapezoidal structure, including a first side and a second side that are parallel to each other, and a third side and a fourth side that connect the two sides. The first side is connected to the bottom side, and the length of the first side is the same as the length of the bottom side. The length of the second side is greater than the length of the first side. The first crease line and the second crease line both extend from the first side to the second side, and the extension directions of the first crease line and the second crease line intersect, so that the fourth side forms the side of the first part, the first side forms the side of the second part, and the third side forms the side of the third part.

4. The foldable bread tray according to claim 3, characterized in that, The first crease line is a line segment formed by rotating the fourth side about the intersection point with the bottom side by a first angle and extending it to intersect with the second side; The second crease line is a line segment formed by rotating the third side about a second angle around its intersection with the bottom side and extending it to intersect with the second side.

5. The foldable bread tray according to claim 4, characterized in that, The first angle is 60°, and the second angle is 60°.

6. The foldable bread tray according to claim 3, characterized in that, The clamping plate is an isosceles trapezoidal structure, which includes a fifth side and a sixth side that are parallel to each other, and a seventh side and an eighth side that connect the two sides. The seventh side is connected to the third side, and the length of the seventh side is the same as the length of the third side.

7. The foldable bread tray according to claim 6, characterized in that, The length of the sixth side is greater than the length of the fifth side, and the length of the fifth side is the same as the length of the bottom side.

8. The folding bread tray according to claim 6, characterized in that, The flap includes a first side edge, which is connected to the eighth side edge. The width of the flap gradually decreases outward from the first side edge, and the adhesive area is formed on one end face of the flap.

9. The folding bread tray according to claim 8, characterized in that, The adhesive area is coated with adhesive, and the flap is bonded to the first part so that the eighth side coincides with the fourth side.

10. The folding bread tray according to claim 1, characterized in that, The paper tray is a kraft paper tray structure or a cardboard paper tray structure.

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