Paper box convenient to open in various modes

Abstract

The utility model relates to the technical field of paper boxes, and discloses a paper box convenient to open in various modes, which structurally comprises a front panel, a left side plate, a rear panel, a right side plate, an inner-layer closed top panel, a top plate, an inner-layer closed bottom panel and a bottom plate, paper forming the paper box is formed by sequentially overlapping a surface layer, a core layer and a bottom layer. A second easy-to-tear opening is formed in the rear panel, and a first easy-to-tear opening is formed in the top plate; the notches of the first easy-to-tear opening and the second easy-to-tear opening are formed in the upper surface and the lower surface of the paper box in a staggered mode. The paper box provided by the utility model has various opening modes.

Description

Technical Field

[0001] The utility model relates to the technical field of paper boxes, in particular to a paper box which can be opened conveniently in multiple ways. Background Art

[0002] Paper box packaging is widely used in the packaging of various foods, such as biscuits, candies, chocolates, tea, etc. The materials of paper box packaging are divided into white cardboard, gray-bottom white board paper, white board paper, cardboard, double-sided paper and other types. These types of paper materials have the characteristics of moisture-proof, shock-proof, and anti-pollution, which can ensure the quality and freshness of food. In addition to food, paper box packaging can also be used to package various daily necessities, such as paper towels, sanitary napkins, household items, etc. These products are easily contaminated or worn by external objects, and paper box packaging can protect these products well.

[0003] Traditional paper boxes often use this "connect-break-connect-break-connect" opening method similar to a "zipper". Secondly, due to the performance differences of paper in the prior art, two abnormal situations occur during the tearing process of the paper box. One situation is that it is not easy to tear, which not only causes damage to the paper box during the tearing process, causing the product in the paper box to be contaminated, but also affects the consumer experience; another situation is that it is particularly easy to tear, which will cause the product packaging to be damaged before it is sold, thereby increasing the merchant's cost and waste of resources. In addition, the traditional paper box has a way of opening, which may make it inconvenient to take things out of the paper box due to differences in the use environment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a paper box that is convenient to open in multiple ways. The paper box of the utility model will not have the problem of the opening of the paper box being easy to tear before it is opened, and the paper box will not be difficult to tear when the consumer opens it. The paper box also has multiple ways of opening.

[0005] The utility model provides a method for preparing a paper box that can be opened conveniently in multiple ways, comprising the following steps:

[0006] Step S1: preparing high bulk core layer easy-to-delaminate white cardboard;

[0007] Step S2: cutting the high bulk core layer easy-to-delaminate white cardboard obtained in step S1 according to the size and structure of the paper box design;

[0008] Step S3: After the cutting in step S2 is completed, the position, length and shape of the first easy tearing edge and the second easy tearing edge are designed on the paper box, and the first easy tearing edge and the second easy tearing edge are prepared by using the front and back half-cutting technology;

[0009] The high bulk core layer easy-to-delaminate white cardboard is composed of a surface layer, a core layer, and a bottom layer stacked in sequence;

[0010] The front and back half-cut technology is to cut the upper and lower surfaces of the high bulk core layer easy-to-delaminate white cardboard at the positions where the first easy-to-tear opening and the second easy-to-tear opening are designed, so that the cuts of the first easy-to-tear opening and the second easy-to-tear opening are formed alternately on the upper and lower surfaces of the high bulk core layer easy-to-delaminate white cardboard, specifically including:

[0011] After the surface layer and the core layer are cut for the nth time (n is a positive integer), an incision is formed on the surface layer and the core layer, and then the bottom layer and the core layer are cut for the (n+1)th time, and an incision is formed on the bottom layer and the core layer, and the incisions are staggered on the upper and lower surfaces of the high bulk thickness core layer easy-to-delaminate white cardboard;

[0012] After the bottom layer and the core layer are cut for the nth time (n is a positive integer), an incision is formed in the bottom layer and the core layer, and then the surface layer and the core layer are cut for the (n+1)th time, and an incision is formed in the surface layer and the core layer, and the incisions are staggered on the upper and lower surfaces of the high bulk core layer easy-to-delaminate white cardboard.

[0013] Furthermore, when the cuts of the first easy tearing opening and the second easy tearing opening are formed alternately on the upper surface and the lower surface of the high bulk core layer easy-to-delaminate white cardboard, the minimum distance between adjacent cuts is 3mm-15mm.

[0014] Furthermore, the raw materials of the surface layer are composed of bleached softwood kraft pulp (NBKP) and bleached hardwood kraft pulp (LBKP).

[0015] Furthermore, the mass proportion of the softwood bleached kraft pulp in the raw materials of the surface layer is 80%-90%, and the mass proportion of the bleached kraft hardwood pulp in the surface layer is 10%-20%.

[0016] Furthermore, the raw material of the core layer includes chemical mechanical pulp.

[0017] Furthermore, the raw materials of the bottom layer are composed of bleached softwood kraft pulp (NBKP) and bleached hardwood kraft pulp (LBKP).

[0018] Furthermore, the mass proportion of the softwood bleached kraft pulp in the raw materials of the bottom layer is 70%-80%; the mass proportion of the bleached kraft hardwood pulp in the bottom layer is 20%-30%.

[0019] Furthermore, in terms of mass, the bottom layer accounts for 10%-15% of the mass of the high bulk core layer easily delaminated white cardboard, and the core layer accounts for 70%-80% of the mass of the high bulk core layer easily delaminated white cardboard.

[0020] Furthermore, the mass proportion of the bottom layer in the high bulk core layer easy-to-delaminate white cardboard, the mass proportion of the core layer in the high bulk core layer easy-to-delaminate white cardboard, and the mass proportion of the surface layer in the high bulk core layer easy-to-delaminate white cardboard are 100%.

[0021] Furthermore, the preparation method of the high bulk core layer easy-to-delaminate white cardboard includes: pulping, slag removal, pulping, purification, molding, pressing, primary drying, sizing, coating, and finally soft matte and secondary drying.

[0022] In the method of the utility model, the process for preparing high bulk core layer easy-to-delaminate white cardboard can adopt the traditional papermaking process parameters in the prior art, such as the first drying temperature between 170°C and 210°C.

[0023] Furthermore, the temperature of the first drying is 170°C-210°C.

[0024] Furthermore, the preparation method also includes designing the position, length and shape of the third easy-tear opening on the paper box, and the third easy-tear opening is formed by using a traditional zipper knife process to form a zipper-like opening method.

[0025] Furthermore, the end of the second easy-tear opening is connected to the end of the third easy-tear opening to jointly open the paper box.

[0026] Furthermore, the structure of the paper box is formed by a front panel, a left side panel, a rear panel, a right side panel, an inner closed top panel, a top panel, an inner closed bottom panel, and a bottom panel enclosing the paper box;

[0027] The paper forming the paper box is composed of a surface layer, a core layer, and a bottom layer stacked in sequence;

[0028] The second easy-tear opening is provided on the rear panel, and the first easy-tear opening is provided on the top panel; the cuts of the first easy-tear opening and the second easy-tear opening are formed alternately on the upper surface and the lower surface of the paper box, specifically comprising:

[0029] When the mth (m is a positive integer) through cuts of the first easy tearing opening and the second easy tearing opening are on the surface layer and the core layer, the (m+1)th through cuts are on the bottom layer and the core layer, and the cuts are arranged alternately on the upper and lower surfaces of the paper box;

[0030] When the mth (m is a positive integer) through cuts of the first and second easy-tear edges are on the bottom layer and the core layer, and the (m+1)th through cuts are on the surface layer and the core layer, the cuts are alternately arranged on the upper and lower surfaces of the paper box.

[0031] Furthermore, when the cuts of the first easy-tear opening and the second easy-tear opening are formed alternately on the upper surface and the lower surface of the paper box, the minimum distance between adjacent cuts is 3mm-15mm.

[0032] Furthermore, the structure of the paper box is formed by enclosing a front panel, a left side panel, a rear panel, a right side panel, an inner closed top panel, a top panel, an inner closed bottom panel, and a bottom panel, and the specific steps include:

[0033] The left side panel is connected to the front panel, and the rear panel is connected to the left side panel in a direction away from the front panel;

[0034] The right side panel is connected to the rear panel in a direction away from the left side panel;

[0035] The front panel is connected to the inner closed top panel, and the inner closed bottom panel is connected to the front panel in a direction away from the inner closed top panel;

[0036] The rear panel is connected to the top panel, and the bottom panel is connected to the rear panel in a direction away from the top panel.

[0037] Furthermore, a third easy-tear opening is provided on the right side panel, the cut of the third easy-tear opening passes through the paper box, the cut is parallel to the horizontal plane, and the part connecting adjacent cuts in the third easy-tear opening is connected to the right side panel.

[0038] Furthermore, the second easy-tear opening is connected to the third easy-tear opening at the junction of the rear panel and the right side panel.

[0039] Furthermore, the structure of the paper box also includes a mouth, a first dust-proof wing, a second dust-proof wing, a third dust-proof wing, and a fourth dust-proof wing.

[0040] Furthermore, the living opening is arranged at an end away from the left side panel and connected to the front panel, and the living opening is used to connect the front panel and the right side panel.

[0041] Furthermore, the first dustproof wing and the third dustproof wing are connected to two ends of the left side plate.

[0042] Furthermore, the second dustproof wing and the fourth dustproof wing are connected to two ends of the right side plate.

[0043] Furthermore, the preparation method of the utility model obtains a paper box that is convenient to open in multiple ways.

[0044] The embodiments of the present utility model have the following technical effects:

[0045] 1. First, the bulky and easily layered white cardboard obtained by the utility model has the characteristics of high stiffness, large thickness, easy layering, high bulk, smooth paper surface, good printing effect, and has a three-layer structure. Among them, the surface layer and the bottom layer in the bulky and easily layered white cardboard have high tensile strength, which can provide sufficient protection for the contents, and the core layer is easy to layer to ensure a smooth tearing process, bringing a better experience. In order to improve the technical problem of opening a carton under the traditional process, in the method of this aspect, based on the prepared bulky and easily layered white cardboard, the front and back half-cut technology that can adapt to it is matched to prepare an easy-tear mouth. Cutting is performed on the upper and lower surfaces of the high-bulk core layer easy-layered white cardboard, so that the incision of the tearing mouth is staggered on the upper and lower surfaces of the high-bulk core layer easy-layered white cardboard, thereby solving the technical problem that the easy-tear mouth is easy to be damaged during the transportation of the carton, and also solving the problem that the easy-tear mouth is difficult to tear when consumers tear the carton.

[0046] On this basis, the raw material components and proportions for forming bulky and easily layered white cardboard were further designed. The raw material components and proportions can adjust the uprightness of the high bulky core layer of easily layered white cardboard. First, it is conducive to the formation of the carton structure; second, it can improve the strength of the carton to prevent collapse and damage during transportation, etc. Third, it can reduce fiber consumption and reduce the cost of raw materials for enterprises, which is in line with the concept of green packaging. The minimum distance between the cuts was further designed to further overcome the difficulties of the existing technology, and finally solve the technical problem of easy tearing and easy damage during the transportation of the carton, and also solve the problem of consumers' easy tearing and difficult tearing during the process of tearing the carton.

[0047] 2. The paper box designed by the utility model is subjected to pressure test at the tear line. When the pressure depth is 15 mm, the fracture rate of the utility model is 12%, which is 71% lower than that of the traditional one, and the fracture of the tear line is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 It is an expanded view of a paper box provided in an embodiment of the utility model.

[0050] Figure 2 It is a front stereoscopic view of a paper box provided in an embodiment of the utility model.

[0051] Figure 3 It is a side perspective view of a paper box provided by an embodiment of the utility model.

[0052] Figure 4 It is a schematic diagram of preparing the first easy-tear edge and the second easy-tear edge by the front and back half-cut technology provided in an embodiment of the utility model.

[0053] Among them, 1- living opening; 2- front panel; 3- left side panel; 4- back panel; 5- right side panel; 6- inner closed top panel; 7- first dustproof wing; 8- top panel; 9- second dustproof wing; 10- inner closed bottom panel; 11- third dustproof wing; 12- bottom panel; 13- fourth dustproof wing; 14- first easy-tear opening; 15- second easy-tear opening; 16- third easy-tear opening; a- surface layer; b- core layer; c- bottom layer; X- incision of the first easy-tear opening; Y- incision of the first easy-tear opening. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0055] In a first aspect, some embodiments of the present invention provide a method for preparing a paper box that can be easily opened in multiple ways, comprising the following steps:

[0056] Step S1: preparing high bulk core layer easy-to-delaminate white cardboard;

[0057] Step S2: cutting the high bulk core layer easy-to-delaminate white cardboard obtained in step S1 according to the size and structure of the paper box design;

[0058] Step S3: After the cutting in step S2 is completed, the position, length and shape of the first easy tearing edge and the second easy tearing edge are designed on the paper box, and the first easy tearing edge and the second easy tearing edge are prepared by using the front and back half-cutting technology;

[0059] The high bulk core layer easy-to-delaminate white cardboard is composed of a surface layer, a core layer, and a bottom layer stacked in sequence;

[0060] The front and back half-cut technology is to cut the upper and lower surfaces of the high bulk core layer easy-to-delaminate white cardboard at the positions where the first easy-to-tear opening and the second easy-to-tear opening are designed, so that the cuts of the first easy-to-tear opening and the second easy-to-tear opening are formed alternately on the upper and lower surfaces of the high bulk core layer easy-to-delaminate white cardboard, specifically including:

[0061] After the surface layer and the core layer are cut for the nth time (n is a positive integer), an incision is formed on the surface layer and the core layer, and then the bottom layer and the core layer are cut for the (n+1)th time, and an incision is formed on the bottom layer and the core layer, and the incisions are staggered on the upper and lower surfaces of the high bulk thickness core layer easy-to-delaminate white cardboard;

[0062] After the bottom layer and the core layer are cut for the nth time (n is a positive integer), an incision is formed in the bottom layer and the core layer, and then the surface layer and the core layer are cut for the (n+1)th time, and an incision is formed in the surface layer and the core layer, and the incisions are staggered on the upper and lower surfaces of the high bulk core layer easy-to-delaminate white cardboard.

[0063] In the method of the utility model, a high-bulk core layer easy-to-delaminate white cardboard is prepared. This type of high-bulk core layer easy-to-delaminate white cardboard has the characteristics of high stiffness, large thickness, easy delamination, high bulk, smooth paper surface, and good printing effect. It has a three-layer structure and can be applied to the front and back half-cut technology to prepare easy-to-tear edges. Among them, the surface layer and the bottom layer in the bulky easy-to-delaminate white cardboard have high tensile strength, which can provide sufficient protection for the contents. The easy delamination of the core layer ensures a smooth tearing process and brings a better experience. The easy-to-tear edge achieved by the front and back half-cut technology solves the technical problem that the easy-to-tear edge is easily damaged during the transportation of the paper box, and also solves the problem that the easy-to-tear edge is difficult to tear when consumers tear the paper box.

[0064] In some embodiments, when the cuts of the first easy tearing edge and the second easy tearing edge are formed alternately on the upper surface and the lower surface of the high bulk core layer easy-to-delaminate white cardboard, the minimum distance between adjacent cuts is 3 mm-15 mm.

[0065] The utility model can further overcome the difficulties of the prior art by controlling the minimum distance between adjacent cuts, and finally solve the technical problem that the easy-tear edge is easy to be damaged during the transportation of the paper box, and also solve the problem that the easy-tear edge is difficult to tear open when consumers tear open the paper box. When the minimum distance between adjacent cuts is less than 3mm, the cuts will be denser, making the easy-tear edge easy to be torn; and when the minimum distance between adjacent cuts is greater than 15mm, it will be difficult for consumers to tear open during the tearing process, and finally cause the paper box to be damaged.

[0066] In some embodiments, the raw material of the surface layer consists of bleached softwood kraft pulp (NBKP) and bleached hardwood kraft pulp (LBKP).

[0067] In the utility model, the bleached kraft hardwood pulp can improve the strength of the surface layer, thereby being beneficial to improving the stiffness of the high bulk core layer easy-to-delaminate white cardboard.

[0068] In some embodiments, the mass proportion of the softwood bleached kraft pulp in the raw materials of the surface layer is 80%-90%, and the mass proportion of the bleached kraft hardwood pulp in the surface layer is 10%-20%.

[0069] In the present invention, the high-bulk core layer easy-to-delaminate white cardboard to be obtained can be folded, and the paper box structures formed by the high-bulk core layer easy-to-delaminate white cardboard can be stably connected. When the high-bulk core layer easy-to-delaminate white cardboard has a large stiffness, it will cause the paper box to be difficult to shape, resulting in unstable connections between the paper box structures. When the high-bulk core layer easy-to-delaminate white cardboard has a small stiffness, it will cause the strength of the paper box to decrease and be easy to deform. Therefore, in this case, the proportion of the pulp in the raw materials of the surface layer is adjusted, so that the high-bulk core layer easy-to-delaminate white cardboard can be folded to form a paper box structure on the basis of having a suitable stiffness.

[0070] In some embodiments, the raw material of the core layer includes chemical mechanical pulp.

[0071] In the present invention, the core layer needs to be easily separated from the surface layer and the bottom layer, which is conducive to the use of the front and back half-cut technology in this case. The technical difficulty of the front and back half-cut technology is that the core layer can be easily separated from the surface layer and the bottom layer. If the separation is poor, it is easy to cut all three layers in the implementation of the front and back half-cut technology, and the technical effect of the present invention cannot be formed. If the separation is good, the connection of the three layers will be poor, which will cause the stability of the entire paper box structure to decrease. Therefore, using chemical mechanical pulp in the core layer can improve the tearability of the paper box.

[0072] In some embodiments, the raw materials of the bottom layer are composed of bleached softwood kraft pulp (NBKP) and bleached hardwood kraft pulp (LBKP).

[0073] In the present invention, the bottom layer also needs appropriate stiffness.

[0074] In some embodiments, the mass proportion of the softwood bleached kraft pulp in the raw materials of the bottom layer is 70%-80%; the mass proportion of the bleached hardwood kraft pulp in the bottom layer is 20%-30%.

[0075] In some embodiments, the bottom layer accounts for 10%-15% of the mass of the high bulk core layer easily delaminated white cardboard, and the core layer accounts for 70%-80% of the mass of the high bulk core layer easily delaminated white cardboard.

[0076] In the present invention, in order to further realize that the high bulk core layer easy-to-delaminate white cardboard can be folded to form a paper box structure on the basis of having suitable stiffness, the mass proportion of the three-layer structure in the high bulk core layer easy-to-delaminate white cardboard is further designed, so that the high bulk core layer easy-to-delaminate white cardboard is suitable for the front and back half-cut technology. In addition, the paper box obtained by the present invention has two ways to open the paper box, so it is more necessary to ensure the structural strength of the paper box.

[0077] In some embodiments, the mass proportion of the bottom layer in the high bulk core layer easy-to-delaminate white cardboard, the mass proportion of the core layer in the high bulk core layer easy-to-delaminate white cardboard, and the mass proportion of the surface layer in the high bulk core layer easy-to-delaminate white cardboard are 100%.

[0078] In some embodiments, the method for preparing the high bulk core layer easy-to-delaminate white cardboard includes: pulping, deslagging, refining, purification, molding, pressing, primary drying, sizing, coating, and finally soft matte finishing and secondary drying.

[0079] In some embodiments, the first drying temperature is 170°C-210°C.

[0080] In some embodiments, the preparation method further includes designing the position, length and shape of a third tearable opening on the paper box, and the third tearable opening is formed by using a traditional zipper knife process to form a zipper-like opening method.

[0081] In some embodiments, the end of the second easy-tear opening is connected to the end of the third easy-tear opening to jointly open the paper box.

[0082] Second, Figure 1-Figure 4 The carton is shown in Figure 1 It can be found that the structure of the paper box is formed by a front panel 2, a left side panel 3, a rear panel 4, a right side panel 5, an inner closed top panel 6, a top panel 8, an inner closed bottom panel 10, and a bottom panel 12.

[0083] exist Figure 4 The paper forming the paper box is composed of a surface layer a, a core layer b, and a bottom layer c stacked in sequence;

[0084] The second easy tearing opening 15 is designed on the rear panel 4, and the first easy tearing opening 14 is designed on the top panel 8; the cuts of the first easy tearing opening 14 and the second easy tearing opening 15 are formed alternately on the upper surface and the lower surface of the paper box, specifically including:

[0085] When the mth (m is a positive integer) through cuts of the first easy tearing opening 14 and the second easy tearing opening 15 are on the surface layer a and the core layer b, the (m+1)th through cuts are on the bottom layer c and the core layer b, and the cuts are staggered on the upper and lower surfaces of the paper box;

[0086] When the mth (m is a positive integer) through cut of the first easy tearing opening 14 and the second easy tearing opening 15 is on the bottom layer c and the core layer b, the (m+1)th through cut is on the surface layer a and the core layer b, and the cuts are alternately arranged on the upper and lower surfaces of the paper box.

[0087] exist Figure 3It can be found that the first easy tearing opening 14 is on the top plate 8. Since the top plate 8 is small in size and is located on the side of the paper box, the shape of the first easy tearing opening is designed to be a rectangle.

[0088] In the design process of this embodiment, easy-tear openings are designed in different parts of the paper box, so as to realize different ways of opening the paper box. In addition, the structure of the easy-tear opening solves the technical problem that the easy-tear opening is easy to be damaged during the transportation of the paper box, and also solves the problem that the easy-tear opening is difficult to tear open when consumers tear open the paper box.

[0089] In some embodiments, when the cuts of the first easy-tear opening 14 and the second easy-tear opening 15 are formed alternately on the upper surface and the lower surface of the paper box, the minimum distance between adjacent cuts is 3 mm-15 mm.

[0090] In some embodiments, Figure 1 In the embodiment, the structure of the paper box is formed by a front panel 2, a left side panel 3, a rear panel 4, a right side panel 5, an inner closed top panel 6, a top panel 8, an inner closed bottom panel 10, and a bottom panel 12. The specific steps of forming the paper box include:

[0091] The left side panel 3 is connected to the front panel 2, and the rear panel 4 is connected to the left side panel 3 in a direction away from the front panel 2;

[0092] The right side plate 5 is connected to the rear panel 4 in a direction away from the left side plate 3;

[0093] The front panel 2 is connected to the inner closed top panel 6, and the inner closed bottom panel 10 is connected to the front panel 2 in a direction away from the inner closed top panel 6;

[0094] The rear panel 4 is connected to the top panel 8 , and the bottom panel 12 is connected to the rear panel 4 in a direction away from the top panel 8 .

[0095] In some embodiments, a third tearable opening 16 is provided on the right side panel 5 , the cut of the third tearable opening 16 passes through the paper box, the cut is parallel to the horizontal plane, and the portion connecting adjacent cuts in the third tearable opening 16 is connected to the right side panel 5 .

[0096] exist Figure 2 In the embodiment, the second easy-tear opening 15 and the third easy-tear opening 16 are connected at the junction of the rear panel 4 and the right side panel 5 .

[0097] In some embodiments, the structure of the paper box further includes a mouth 1, a first dust-proof wing 7, a second dust-proof wing 9, a third dust-proof wing 11, and a fourth dust-proof wing 13.

[0098] In some embodiments, Figure 1 In the figure, the living opening 1 is arranged at an end away from the left side panel 3 and is connected to the front panel 2. The living opening 1 is used to connect the front panel 2 and the right side panel 5.

[0099] In some embodiments, the first dustproof wing 7 and the third dustproof wing 11 are connected to two ends of the left side plate 3 .

[0100] In some embodiments, the second dustproof wing 9 and the fourth dustproof wing 13 are connected to two ends of the right side plate 5 .

[0101] In order to ensure the airtightness of the formed carton, 4 dust-proof wings are used.

[0102] In a third aspect, some embodiments of the present invention provide a preparation method of the present invention for obtaining a paper box that can be opened conveniently in multiple ways.

[0103] The following is described in conjunction with specific embodiments:

[0104] Embodiment 1:

[0105] The high bulk core layer easy-to-delaminate white cardboard is produced by traditional paper making process, wherein the raw materials of the surface layer contain 85% softwood bleached sulfate pulp and 15% bleached sulfate hardwood pulp, and the raw materials of the core layer contain chemical mechanical pulp. The raw materials of the bottom layer contain 75% softwood bleached sulfate pulp and 25% bleached sulfate hardwood pulp. The ratio of the mass of the bottom layer to the mass of the high bulk core layer easy-to-delaminate white cardboard is 15%, the ratio of the mass of the core layer to the mass of the high bulk core layer easy-to-delaminate white cardboard is 70%, and the ratio of the mass of the surface layer to the mass of the high bulk core layer easy-to-delaminate white cardboard is 15%. The first easy-to-tear edge and the second easy-to-tear edge are formed by half-cutting technology on the front and back sides.

[0106] Comparative Example 1:

[0107] The paper box is obtained by a conventional method and the easy-tear edge is prepared by a conventional zipper knife.

[0108] The compression resistance test of the tear line of the paper boxes obtained in Example 1 and Comparative Example 1 showed that when a pressure test was carried out at the tear line with a pressure depth of 15 mm, the breakage rate of the tear line of the traditional paper box was 83%, while the breakage rate of the utility model was 12%, a reduction of 71%, and a significant reduction in the breakage of the tear line.

[0109] It should be noted that the terms used in the present invention are only for describing specific embodiments, rather than limiting the scope of the present application. As shown in the present utility model specification, unless the context clearly indicates an exception, the words "one", "a", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the presence of other identical elements in the process, method or device including the elements.

[0110] It should also be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the case, the descriptions such as "first" and "second" are mainly used to distinguish between two steps or products, and they are not inherently related.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the utility model.

Claims

1. A paper box that can be opened in multiple ways, characterized in that: The structure of the paper box is formed by a front panel (2), a left side panel (3), a rear panel (4), a right side panel (5), an inner closed top panel (6), a top panel (8), an inner closed bottom panel (10), and a bottom panel (12); The paper forming the paper box is composed of a surface layer (a), a core layer (b), and a bottom layer (c) stacked in sequence; A second easy-tear opening (15) is provided on the rear panel (4), and a first easy-tear opening (14) is provided on the top panel (8); the cutouts of the first easy-tear opening (14) and the second easy-tear opening (15) are formed alternately on the upper surface and the lower surface of the paper box, specifically comprising: When the mth through cut of the first easy tearing opening (14) and the second easy tearing opening (15) is on the surface layer (a) and the core layer (b), the m+1th through cut is on the bottom layer (c) and the core layer (b), and the cuts are arranged alternately on the upper and lower surfaces of the paper box, and m is a positive integer; When the mth through cut of the first easy tearing edge (14) and the second easy tearing edge (15) is on the bottom layer (c) and the core layer (b), the m+1th through cut is on the surface layer (a) and the core layer (b), and the cuts are arranged alternately on the upper and lower surfaces of the paper box.

2. The paper box according to claim 1, characterized in that: When the cuts of the first easy-tear opening (14) and the second easy-tear opening (15) are formed alternately on the upper surface and the lower surface of the paper box, the minimum distance between adjacent cuts is 3mm-15mm.

3. The paper box according to claim 1, characterized in that: The structure of the paper box is enclosed by a front panel (2), a left side panel (3), a rear panel (4), a right side panel (5), an inner closed top panel (6), a top panel (8), an inner closed bottom panel (10), and a bottom panel (12), and the specific steps of forming the paper box include: The left side panel (3) is connected to the front panel (2), and the rear panel (4) is connected to the left side panel (3) in a direction away from the front panel (2); The right side panel (5) is connected to the rear panel (4) in a direction away from the left side panel (3); The front panel (2) is connected to the inner closed top panel (6), and the inner closed bottom panel (10) is connected to the front panel (2) in a direction away from the inner closed top panel (6); The rear panel (4) is connected to the top panel (8), and the bottom panel (12) is connected to the rear panel (4) in a direction away from the top panel (8).

4. The paper box according to claim 1, characterized in that: The right side plate (5) is provided with a third easy-tear opening (16), the cut of the third easy-tear opening passes through the paper box, the cut is parallel to the horizontal plane, and the portion connecting adjacent cuts in the third easy-tear opening (16) is connected to the right side plate (5).

5. The paper box according to claim 1, characterized in that: The second easy-tear opening (15) and the third easy-tear opening (16) are connected at the junction of the rear panel (4) and the right side panel (5).

6. The paper box according to claim 1, characterized in that: The structure of the paper box also includes a mouth (1), a first dust-proof wing (7), a second dust-proof wing (9), a third dust-proof wing (11), and a fourth dust-proof wing (13).

7. The paper box according to claim 6, characterized in that: The living port (1) is arranged at an end away from the left side panel (3) and is connected to the front panel (2). The living port (1) is used to connect the front panel (2) and the right side panel (5).

8. The paper box according to claim 6, characterized in that: The first dustproof wing (7) and the third dustproof wing (11) are connected to two ends of the left side plate (3).

9. The paper box according to claim 6, characterized in that: The second dustproof wing (9) and the fourth dustproof wing (13) are connected to two ends of the right side plate (5).

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