Corrugated reinforced packaging lining

Abstract

The utility model provides a corrugated reinforced packaging lining which comprises a corrugated board reinforcing structure formed through integrated die cutting and a high-elasticity thin film structure installed on the corrugated board reinforcing structure, the corrugated board reinforcing structure can be unfolded into a sheet-shaped corrugated board and can be folded into a three-dimensional corrugated board reinforcing structure, the middle of the corrugated board reinforcing structure is a central corrugated supporting board, and the middle of the corrugated board reinforcing structure is a hollow corrugated supporting board. A left reinforcing structure, a right reinforcing structure, a front reinforcing structure and a rear reinforcing structure which can be folded into a three-dimensional structure and locked with one another are arranged on the periphery. Wherein the middle of the central corrugated supporting plate is designed to be of a hollow structure in a four-leaf clover shape, and the thin film structure is installed on the central corrugated supporting plate and covers the hollow structure in the middle of the central corrugated supporting plate. According to the corrugated reinforced packaging lining, the corrugated board and the high-elasticity thin film are combined into an integrated foldable structure, a corrugated reinforced structure with the peripheries locked mutually is further designed, and the purposes of visual appearance, high pressure impact resistance, high buffering performance, convenience and rapidness in transportation, time saving in packaging, cost reduction and efficiency improvement are achieved.

Description

Technical Field

[0001] The present application relates to the field of packaging technology, and in particular to a corrugated reinforced packaging liner. Background Art

[0002] At present, corrugated boxes are widely used in many industries such as food and beverage, electronic appliances, textile chemicals, daily necessities, furniture, etc. due to their advantages of light weight, good shock absorption performance, easy storage and transportation, and mechanized and automated production. For some irregularly shaped products, fragile items, valuables, electronic products, complete sets of products, etc., it is often necessary to set one or more liners in the corrugated box to better support and protect the products.

[0003] In the field of power equipment packaging, for example, for products with a certain weight such as voltage protection devices and differential protection devices, their factory packaging is usually an outer corrugated box and an inner cushioning foam, and the inner cushioning foam is mostly made of non-degradable EPE (expandable polyethylene) and other materials. This packaging method is not conducive to environmental protection, and due to the large protective volume, it will cause a large space to be occupied during transportation and storage. At the same time, due to the large number of consumables, the packaging cost is expensive.

[0004] In the prior art, there are emerging packaging designs that combine corrugated cardboard with highly elastic films, such as the structure of Chinese Patent No. CN 110342076A. It uses highly elastic films as buffers to disperse the weight of the product to multiple corrugated cardboard lining blocks to achieve suspended cushioning packaging. Its disadvantage is that multiple lining blocks are required to be used in conjunction to support the product, and the corrugated lining blocks of the invention are thin open-type cardboard designs with poor stability and low compressive strength. They are only suitable for small and light electronic products (such as mobile phones, watches, laptops, etc.), and cannot meet the packaging requirements of products with a certain weight. Therefore, there is an urgent need for a packaging lining that is green, environmentally friendly, load-bearing, compression-resistant, impact-resistant, has a good cushioning effect, and occupies a small space, which is used to be used efficiently with the outer corrugated box to achieve the purpose of visual appearance, convenient transportation, time-saving packaging, and cost reduction and efficiency improvement. Utility Model Content

[0005] Based on this, the present application provides a corrugated reinforced packaging lining, including an integrated die-cut corrugated cardboard reinforcement structure and a film structure installed thereon, wherein the corrugated cardboard reinforcement structure can be unfolded into a sheet of corrugated cardboard and can be folded into a three-dimensional corrugated cardboard reinforcement structure, which includes a left reinforcement structure, a right reinforcement structure, a front reinforcement structure, a rear reinforcement structure and a central corrugated support plate that can be folded into a three-dimensional structure and locked with each other; wherein the middle part of the central corrugated support plate is designed as a hollow structure, and the film structure is installed on the central corrugated support plate and covers the hollow structure.

[0006] In the above-mentioned corrugated reinforced packaging lining, the left reinforcement structure and the right reinforcement structure both include a first support plane, a second support plane, a third support plane and a fourth support plane, and the front reinforcement structure and the rear reinforcement structure both include a fifth support plane, a sixth support plane, a seventh support plane and an eighth support plane; when the left reinforcement structure and the right reinforcement structure are folded, the first support plane, the second support plane, the third support plane and the fourth support plane form a rectangular structure, and the first support plane fits the central corrugated support plate; when the front reinforcement structure and the rear reinforcement structure are folded, the fifth support plane, the sixth support plane, the seventh support plane and the eighth support plane form a rectangular structure, and the fifth support plane fits the central corrugated support plate.

[0007] In the above-mentioned corrugated reinforced packaging lining, the left reinforcement structure and the right reinforcement structure both include locking tongue pieces; the front reinforcement structure and the rear reinforcement structure both include locking slots; after the corrugated cardboard is folded into a three-dimensional structure, the locking tongue pieces can be inserted into the corresponding locking slots, so that the left reinforcement structure and the right reinforcement structure are respectively locked with the front reinforcement structure and the rear reinforcement structure to form the corrugated cardboard reinforcement structure.

[0008] In the above-mentioned corrugated reinforced packaging liner, the locking tongue piece is connected to the third support plane and extends in the direction of the first support plane; the main part of the locking slot is located on the seventh support plane and extends to the sixth support plane, and the length of the locking slot matches the width of the locking tongue piece; when the corrugated board is folded into a three-dimensional structure, the main part of the locking slot is parallel to the central corrugated support plate, and the locking tongue piece is inserted into the locking slot along a direction perpendicular to the central corrugated support plate.

[0009] In the above-mentioned corrugated reinforced packaging liner, the front reinforcement structure and the rear reinforcement structure both include limiting tongue pieces, which are formed by extending from the eighth support plane to both sides and are used to limit the folding positions of the left reinforcement structure and the right reinforcement structure.

[0010] In the above-mentioned corrugated reinforced packaging liner, the corrugated paperboard reinforcement structure has a folding mark, and the left reinforcement structure, the right reinforcement structure, the front reinforcement structure, and the rear reinforcement structure are folded along the folding mark to form a three-dimensional structure.

[0011] In the above-mentioned corrugated reinforced packaging liner, the left reinforcement structure and the right reinforcement structure are symmetrical structures, and the front reinforcement structure and the rear reinforcement structure are symmetrical structures.

[0012] In the above-mentioned corrugated reinforced packaging liner, the hollow structure of the central corrugated support plate is in the shape of a "four-leaf clover".

[0013] In the above-mentioned corrugated reinforced packaging liner, there is an adhesive layer around the central corrugated support plate, and the film structure is adhered to the adhesive layer by using an environmentally friendly strong adhesive.

[0014] In the above-mentioned corrugated reinforced packaging liner, the film structure is a highly elastic, transparent and degradable film with a thickness of 0.1 mm-0.3 mm.

[0015] The corrugated reinforced packaging lining of the present application not only combines the corrugated cardboard and the high-elastic film into an integrated foldable structure, but also designs a corrugated reinforcement structure that is locked with each other on all sides, which makes up for the problems existing in the prior art and achieves the purposes of visual appearance, strong resistance to pressure and impact, strong cushioning, convenient transportation, time-saving packaging, and cost reduction and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without exceeding the scope of protection required by the present application.

[0017] Figure 1-1 and Figure 1-2 It is a schematic diagram of the front and back sides of the corrugated reinforced packaging liner according to the embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the unfolded structure of the corrugated reinforced packaging liner according to an embodiment of the present application.

[0019] Figure 3 This is a folding effect diagram of the front reinforcement structure and the rear reinforcement structure of the corrugated reinforced packaging liner in the embodiment of the present application.

[0020] Figure 4 This is a diagram showing the folding and locking effects of the left reinforcement structure of the corrugated reinforced packaging liner in the embodiment of the present application.

[0021] Figure 5 This is a three-dimensional effect diagram of the corrugated reinforced packaging liner after folding and strengthening in the embodiment of the present application.

[0022] Figure 6 It is a schematic diagram of the effect of packaging products using the corrugated reinforced packaging liner of the embodiment of the present application.

[0023] Reference numerals:

[0024] 100. Corrugated reinforced packaging lining;

[0025] 1. Left reinforcement structure;

[0026] 11. The first supporting plane;

[0027] 12. A second supporting plane;

[0028] 13. The third support plane;

[0029] 14. Fourth support plane;

[0030] A. Lock the tongue piece;

[0031] 2. Right reinforcement structure;

[0032] 3. Front reinforcement structure;

[0033] 31. Fifth support plane;

[0034] 32. Sixth support plane;

[0035] 33. Seventh support plane;

[0036] 34. Eighth support plane;

[0037] C. Limiting tongue piece;

[0038] E. Locking slot;

[0039] 4. Rear reinforcement structure;

[0040] 5. Central corrugated support plate;

[0041] 6. Thin film structure;

[0042] 200. Products to be packaged;

[0043] 300, outer corrugated box. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] Example

[0046] like Figure 1-1 and 1-2As shown, the corrugated reinforced packaging liner 100 of the present application includes an integrated die-cut corrugated cardboard reinforcement structure and a film structure 6 installed thereon. As shown in the figure, the corrugated cardboard reinforcement structure of the present application can be unfolded into a sheet of corrugated cardboard, or folded into a three-dimensional corrugated cardboard reinforcement structure, which includes a left reinforcement structure 1, a right reinforcement structure 2, a front reinforcement structure 3, a rear reinforcement structure 4 that can be folded into a three-dimensional structure and locked with each other, and a central corrugated support plate 5 that connects the four reinforcement structures together. Among them, the middle part of the central corrugated support plate 5 is designed as a hollow structure, and the film structure 6 is installed on the central corrugated support plate 5 and covers the hollow structure.

[0047] like Figure 2 As shown, the main part of the corrugated reinforced packaging liner 100 (hereinafter referred to as packaging liner) of this embodiment is an integrated die-cut corrugated cardboard, the middle of which is a central corrugated support plate 5, and its four sides can be folded along folding marks to form four rectangular reinforcement structures in the front, rear, left and right shapes, among which the left reinforcement structure 1 and the right reinforcement structure 2 are symmetrical structures, and the front reinforcement structure 3 and the rear reinforcement structure 4 are symmetrical structures.

[0048] The following takes the left reinforcement structure 1 as an example to explain its unfolding structure. Figure 2 As shown, it comprises a first support plane 11, a second support plane 12, a third support plane 13, a fourth support plane 14 and two locking tongue pieces A. Among them, the fourth support plane 14 is connected to the outer edge of the central corrugated support plate 5, and the third support plane 13, the second support plane 12, and the first support plane 11 are arranged outward in sequence in a direction away from the central corrugated support plate 5, and there are fold marks between the support planes. The two locking tongue pieces A are respectively located on both sides of the left reinforcement structure 1, and are symmetrically arranged. They are connected to the third support plane 13 and extend in the direction of the first support plane 11. The unfolded shape of the right reinforcement structure 2 is a symmetrical figure with the left reinforcement structure 1, which will not be repeated here.

[0049] The following is an example of the expanded structure of the reinforced structure 3. Figure 2As shown, it includes a fifth support plane 31, a sixth support plane 32, a seventh support plane 33, an eighth support plane 34, two limit tongues C and two locking slots E. Among them, the eighth support plane 34 is connected to the outer edge of the central corrugated support plate 5, and the seventh support plane 33, the sixth support plane 32 and the fifth support plane 31 are arranged outward in sequence in the direction away from the central corrugated support plate 5, and there are fold marks between each support plane. The eighth support plane 34 extends to both sides to form two limit tongues C, and the length of the limit tongue C is preferably half of the length of the left / right support structure, but the present application is not limited to this. The two locking slots E are located on both sides of the front reinforcement structure 3 and are arranged symmetrically. The main part thereof is located on the seventh support plane 33 and extends to the sixth support plane 32. The length of the locking slot E is slightly larger than the width of the locking tongue A, and the position of the locking slot E from both sides of the main part of the front reinforcement structure 3 is approximately equal to the width of the third support plane 13. The unfolded shape of the rear reinforcement structure 4 is a symmetrical figure with the front reinforcement structure 3, which will not be repeated here.

[0050] In this embodiment, the left reinforcement structure 1 and the right reinforcement structure 2 each include two locking tongue pieces A, and the front reinforcement structure 3 and the rear reinforcement structure 4 each include two limiting tongue pieces C and two locking slots E, but the present application is not limited to this, and the number of locking tongue pieces A, locking slots E and limiting tongue pieces C can also be changed as needed.

[0051] In this embodiment, the extension direction of the locking slot E is parallel to the long side of the left reinforcing structure 1, but the present application is not limited thereto. In other embodiments, the locking slot E may also extend in other directions, such as a direction parallel to the long side of the front reinforcing structure 3, and the position and extension direction of the locking tongue piece A should also be changed accordingly.

[0052] Preferably, in this embodiment, the central corrugated support plate 5 is square, that is, the lengths of the long sides of the folded front, rear, left and right reinforcement structures are equal, and there is no need to distinguish the front and back and left and right directions of the packaging liner 100 during the packaging process, but the present application is not limited to this.

[0053] In this embodiment, the middle of the central corrugated support plate 5 is designed as a hollow structure in the shape of a "four-leaf clover", and the central corrugated support plate 5 is surrounded by an adhesive layer ( Figure 2 The film structure 6 is pasted on the pasting layer and covers the hollow structure in the shape of a "four-leaf clover". The film structure 6 of this embodiment is a highly elastic transparent degradable film with a thickness of preferably 0.1 mm to 0.3 mm.

[0054] After the integrally formed corrugated cardboard is die-cut and embossed, the film structure 6 is pasted on the surrounding adhesive layer of the central corrugated support plate 5 with green and environmentally friendly water-based super glue to cover the "four-leaf clover" shaped hollow structure, forming an integrated corrugated reinforced packaging liner 100 combining corrugated cardboard and film.

[0055] like Figure 6 As shown, during the packaging process, the highly elastic film structure 6 can wrap the product 200 to be packaged (hereinafter referred to as the product) and form a buffer protection for the product 200. As shown in the figure, the film structure 6 evenly distributes the weight of the product 200 and transfers it to the central corrugated support plate 5, and the "four-leaf clover"-shaped corrugated cardboard around it supports the product 200, and further transfers the weight to the four reinforcing structures of the front, rear, left and right. In this way, the "four-leaf clover"-shaped corrugated cardboard is combined with the highly elastic film, which not only increases the aesthetics and ornamental value, but also improves the strong buffer protection performance of the packaging liner 100 to the product 200, and realizes the visualization of the product appearance. Just open the swing cover of the outer corrugated box 300, and you can check the appearance of the product 200 through the transparent film structure 6 and the hollow structure of the central corrugated support plate 5. In addition, this embodiment uses a film made of green and degradable materials, and uses green and environmentally friendly super glue to stick the film, which is more friendly to the environment. The packaging liner 100 of this embodiment is small in size, light in weight, occupies little space, and can be stored and transported in a sheet-like structure, and can be folded and assembled when used, which greatly improves the convenience of transportation and saves transportation and storage costs.

[0056] Afterwards, the packaging liner 100 integrating the processed film and corrugated cardboard is transported to the packaging site, and the enhanced protection function of the packaging liner 100 is realized at the packaging site by folding and snap-locking.

[0057] like Figures 3 to 5 As shown, the steps of folding the sheet-like corrugated paperboard into a three-dimensional corrugated paperboard reinforcement structure (or folding the sheet-like packaging liner 100 into a three-dimensional packaging liner 100 to be used) are as follows:

[0058] like Figure 3 As shown in the direction of the arrow in FIG, the fifth support plane 31, the sixth support plane 32, the seventh support plane 33, and the eighth support plane 34 of the front reinforcement structure 3 are folded inward in sequence along the folding marks, so that the front reinforcement structure 3 is folded into a rectangular parallelepiped structure. After folding, the fifth support plane 31 is attached to the central corrugated support plate 5, and the main parts of the two locking slots E are located on a plane parallel to the central corrugated support plate 5.

[0059] The two limiting tongue pieces C of the front reinforcing structure 3 are folded inwards to be close to the two sides of the front reinforcing structure 3 , so as to limit the subsequent folding of the left reinforcing structure 1 and the right reinforcing structure 2 .

[0060] The rear reinforcement structure 4 is folded into a rectangular parallelepiped structure in the same manner. Figure 3 shown.

[0061] according to Figure 4 The first support plane 11, the second support plane 12, the third support plane 13, and the fourth support plane 14 of the left reinforcement structure 1 are folded inwards in sequence along the folding marks to form a rectangular parallelepiped structure. After folding, the first support plane 11 is attached to the central corrugated support plate 5, and the limiting tongue piece C on the left side of the front reinforcement structure 3 and the rear reinforcement structure 4 is against the inner side of the fourth support plane 14.

[0062] Fold the two locking tongues A of the left reinforcing structure 1 inwards and insert them into the locking slots E on the left sides of the front reinforcing structure 3 and the rear reinforcing structure 4 respectively, so as to realize the connection and locking between the left reinforcing structure 1 and the front reinforcing structure 3 and the rear reinforcing structure 4. Figure 4 shown.

[0063] In the same way, fold the right reinforcement structure 2 into a rectangular structure, and insert the two locking tongues A into the corresponding locking slots E to complete the connection and locking between the four three-dimensional reinforcement structures, thereby forming a stable corrugated cardboard reinforcement structure. Figure 5 shown.

[0064] The packaging liner 100 of this embodiment forms four three-dimensional reinforcement structures by folding and locking. The four reinforcement structures are located on the four sides of the packaging liner 100 and are locked and positioned with each other to form an integral stable structure, so that the packaging liner 100 has better load-bearing and impact resistance capabilities.

[0065] The principle and effect of using the packaging liner 100 of this embodiment for packaging protection are as follows:

[0066] like Figure 6As shown, when the product 200 to be packaged is placed in the central area of ​​the packaging liner 100, the product 200 sinks due to its own gravity, causing the central corrugated support plate 5 and the film structure 6 to deform to a certain extent. The four corrugated paperboards at the edge of the "four-leaf clover" are slightly bent downward, so that the product 200 can sink to a certain extent, that is, the bottom surface of the product 200 is lower than the plane where the central corrugated support plate 5 is located, thereby positioning the product 200. The film structure 6 generates tension due to stretching, and tightly wraps the product 200 and holds it up in the air, forming a buffer protection for the product 200. At the same time, the strength of the corrugated paperboard itself supports the product 200, so that the product 200 does not sink too much and can remain suspended. In this way, the central corrugated support plate 5 and the film structure 6 together form a support positioning and effective buffer for the product 200. The weight of the product 200 is evenly distributed through the film structure 6 and is transferred to the four rectangular reinforcement structures through the central corrugated support plate 5. The four interlocked reinforcement structures provide a stable support for the product 200 and form a secondary buffer. During transportation, the four mutually connected and locked corrugated reinforcement structures can buffer impacts from four different directions: front, back, left, and right, and disperse the impact force to other reinforcement structures, so as to effectively prevent the bumps and impacts during transportation from damaging the product 200. During packaging, two packaging liners 100 of this embodiment are used in conjunction with the outer corrugated paper box 300, and the product 200 can also be positioned from the upper and lower directions, forming better support, fixation, and buffer protection for the product 200.

[0067] Because the packaging liner 100 of this embodiment positions and wraps the product through the deformation of the central corrugated support plate 5 and the film structure 6, the requirements on the external dimensions of the product are not strict. The packaging liner 100 of the same size can be used for the packaging of a variety of products with similar external dimensions, which greatly improves the versatility and interchangeability of the packaging and reduces the types of inventory parts.

[0068] like Figure 6 As shown, the steps of packaging a product 200 using the corrugated reinforced packaging liner 100 of this embodiment are as follows:

[0069] A folded packaging liner 100 is arranged in the working area with one side of the central corrugated support plate 5 facing upward, and the product 200 to be packaged is placed in the central area of ​​the packaging liner 100 so that the bottom of the product 200 is supported on the central corrugated support plate 5. The product 200 sinks to a certain extent due to its own weight and is wrapped by the film structure 6.

[0070] Another identical packaging liner 100 is put on the top of the product 200 in the opposite direction (with the side where the central corrugated support plate 5 is located facing downward), so that the top end of the product 200 is stuck in the central corrugated support plate 5 and is wrapped by the film structure 6.

[0071] The bottom of the outer corrugated paper box 300 is sealed with adhesive tape, and then the product 200 wrapped with the liner is loaded into the outer corrugated paper box 300, and then the swing cover of the outer corrugated paper box 300 is sealed to complete the entire packaging process.

[0072] In other embodiments, the hollow structure of the central corrugated support plate 5 can also be designed into other shapes, such as arc shape, wedge shape, etc., or a special-shaped structure can be used to match the shape of the product to be packaged. The film structure 6 can also be made of other materials, and can also be of other thicknesses according to the weight of the product, such as 0.06mm or 0.35mm. The connection between the film structure 6 and the corrugated board can also be connected in other ways, such as using nails or plastic rivets. Depending on the specific use requirements, the front, rear, left and right reinforcement structures can also be asymmetric structures. Depending on the shape and weight of the product, only a single packaging liner 100 of the present application can be used in conjunction with the outer corrugated box 300 for packaging operations, which is not limited here.

[0073] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. Corrugated reinforced packaging lining, It is characterized in that It comprises an integrated die-cut corrugated cardboard reinforcement structure and a film structure installed thereon, wherein the corrugated cardboard reinforcement structure can be unfolded into a sheet of corrugated cardboard and can be folded into a three-dimensional corrugated cardboard reinforcement structure, which comprises a left reinforcement structure, a right reinforcement structure, a front reinforcement structure, a rear reinforcement structure and a central corrugated support plate which can be folded into a three-dimensional structure and locked with each other; wherein the middle part of the central corrugated support plate is designed as a hollow structure, and the film structure is installed on the central corrugated support plate and covers the hollow structure.

2. The corrugated reinforced packaging liner according to claim 1, It is characterized in that The left reinforcement structure and the right reinforcement structure both include a first support plane, a second support plane, a third support plane and a fourth support plane, and the front reinforcement structure and the rear reinforcement structure both include a fifth support plane, a sixth support plane, a seventh support plane and an eighth support plane; when the left reinforcement structure and the right reinforcement structure are folded, the first support plane, the second support plane, the third support plane and the fourth support plane form a rectangular structure, and the first support plane fits the central corrugated support plate; when the front reinforcement structure and the rear reinforcement structure are folded, the fifth support plane, the sixth support plane, the seventh support plane and the eighth support plane form a rectangular structure, and the fifth support plane fits the central corrugated support plate.

3. The corrugated reinforced packaging liner according to claim 2, It is characterized in that The left reinforcement structure and the right reinforcement structure both include locking tongue pieces; the front reinforcement structure and the rear reinforcement structure both include locking slots; after the corrugated cardboard is folded into a three-dimensional structure, the locking tongue pieces can be inserted into the corresponding locking slots, so that the left reinforcement structure and the right reinforcement structure are respectively locked with the front reinforcement structure and the rear reinforcement structure to form the corrugated cardboard reinforcement structure.

4. The corrugated reinforced packaging liner according to claim 3, It is characterized in that The locking tongue piece is connected to the third supporting plane and extends in the direction of the first supporting plane; the main part of the locking slot is located on the seventh supporting plane and extends to the sixth supporting plane, and the length of the locking slot matches the width of the locking tongue piece; when the corrugated board is folded into a three-dimensional structure, the main part of the locking slot is parallel to the central corrugated support plate, and the locking tongue piece is inserted into the locking slot along a direction perpendicular to the central corrugated support plate.

5. The corrugated reinforced packaging liner according to claim 2, It is characterized in that The front reinforcing structure and the rear reinforcing structure both include limiting tongue pieces, and the limiting tongue pieces are formed by extending from the eighth supporting plane to both sides and are used to limit the folding positions of the left reinforcing structure and the right reinforcing structure.

6. The corrugated reinforced packaging liner according to claim 1, It is characterized in that The corrugated cardboard reinforcement structure has a folding mark, and the left reinforcement structure, the right reinforcement structure, the front reinforcement structure, and the rear reinforcement structure are folded along the folding mark to form a three-dimensional structure.

7. The corrugated reinforced packaging liner according to claim 1, It is characterized in that The left reinforcement structure and the right reinforcement structure are symmetrical structures, and the front reinforcement structure and the rear reinforcement structure are symmetrical structures.

8. The corrugated reinforced packaging liner according to claim 1, It is characterized in that The hollow structure of the central corrugated support plate is in the shape of a "four-leaf clover".

9. The corrugated reinforced packaging liner according to claim 1, It is characterized in that The central corrugated support plate is provided with an adhesive layer around its periphery, and the film structure is adhered to the adhesive layer by using an environmentally friendly strong adhesive.

10. The corrugated reinforced packaging liner according to claim 1, It is characterized in that The film structure is a highly elastic, transparent and degradable film with a thickness of 0.1 mm to 0.3 mm.

Images