CN216270887U - Packaging material - Google Patents

Abstract

The utility model provides a packaging material, comprising a base layer and a buffer layer, wherein the base layer has a first side edge and a second side edge, the buffer layer has a third side edge and a fourth side edge; the buffer layer is stacked on On the base layer, the first side edge of the base layer is in close contact with the third side edge of the buffer layer, and the second side edge of the base layer is in close contact with the fourth side edge of the buffer layer.

Description

Packaging material

technical field

The utility model relates to a packaging material; in particular, it refers to a packaging material with no indentation on the surface and no edge pressing on the side.

Background technique

1 shows a breaking bag 10 made of common packaging materials, which has a double-layer structure, the outer layer 12 is an opaque plastic material, and the inner layer 14 is a material with a buffer function (such as bubble wrap), and An adhesive 162 is provided at the flap 16 of the pocket, and the release paper 18 is covered on it. As long as the release paper 18 is torn off and the cover 16 is folded back, the opening of the damaged bag 10 can be closed by the action of the adhesive 162. Once the damaged bag is sealed, the contents cannot be taken out unless the bag body is destroyed (this That is, the origin of the name "destroy bag").

The article is placed inside the destruction bag 10, and the flap 16 is used to close the bag opening. The opaque outer layer 12 can ensure that the contents cannot be seen from the outside, and the cushioning inner layer 14 can provide basic protection and destroy the bag 10. With the feature that it cannot be reopened without damage, it can further ensure that the contents have not been replaced or spied on. Based on these advantages, when the general public sends packages, the destruction bag is a very common choice of packaging supplies.

However, the commonly used packaging materials used to make break bags are usually made by bonding an opaque plastic material and another material with a buffer function by hot pressing, and after the two materials are combined by hot pressing, they are then folded together, and then The side edges are again pressed by the hot pressing method to close the edges, thereby completing the destruction bag 10 having a double-layer structure composed of the outer layer 12 and the inner layer 14 . The outer layer 12 of the damaged bag 10 will be in close contact with the inner layer 14 due to shrinkage after being heated and melted, and the texture or surface pattern of the inner layer 14 will appear on the surface. As can be seen in FIG. 1, the inner layer 14 in this example is made of bubble paper, and the bubble paper has a plurality of air cells arranged in a row, so corresponding indentations will also appear on the outer layer 12, forming an uneven surface, which will cause The presentation effect of the characters or patterns printed on the surface of the outer layer 12 is destroyed, and it is also unfavorable for writing thereon. In addition, since the side edges of the destruction bag 10 are also closed by a hot pressing method, the side edges of the destruction bag 10 will have flattened strip-shaped edges 10A, which inevitably reduces the available accommodation space inside the destruction bag 10 .

Utility model content

In view of the above situation, the utility model provides a packaging material with no indentation on the surface and no indentation on the side.

The utility model provides a packaging material, comprising a base layer and a buffer layer, wherein the base layer has a first side edge and a second side edge; the buffer layer is stacked on the base layer and has a third side edge and a fourth side edge edge. The first side edge of the base layer and the third side edge of the buffer layer are closely adhered to form a first adhesion line, and the second side edge of the base layer and the fourth side edge of the buffer layer are adhered to form a second adhesion line Wire.

In one embodiment, the distance between the first side edge and the second side edge of the base layer, the distance between the third side edge and the fourth side edge of the buffer layer, and the first adhesion line and the The distances of the second lines of engagement are substantially equal.

In one embodiment, the base layer has a first surface facing the buffer layer, and the first surface has a first bonding area; the buffer layer has a second surface facing the base layer, and the second surface has a second bonding area; The first bonding area is combined with the second bonding area; the area of the first bonding area is smaller than the area of the first surface of the base layer, and the area of the second bonding area is smaller than the area of the second surface of the buffer layer .

In one embodiment, the packaging material further includes an adhesive disposed on at least one of the first bonding area of the base layer and the second bonding area of the buffer layer, the first bonding area of the base layer and the The second bonding area of the buffer layer is bonded via the adhesive.

In one embodiment, the base layer has a fold line, a first end edge and a second end edge, and the fold line, the first end edge and the second end edge all connect the first side edge and the second side edge; the The buffer layer has a third end edge and a fourth end edge, the third end edge and the fourth end edge are both connected to the third side edge and the fourth side edge; the base layer and the buffer layer are along the folding line of the base layer Folded together, the base layer constitutes an outer bag, the buffer layer constitutes an inner bag, a storage space is formed in the inner bag, and the inner bag is arranged in the outer bag.

In one embodiment, the base layer has a first surface facing the buffer layer, the first surface has a first bonding area, and the first bonding area is disposed between the first edge of the base layer and the fold line; the The buffer layer has a second surface facing the base layer, the second surface has a second bonding area, the first bonding area is used for bonding with the second bonding area; a part of the base layer, a part of the buffer layer, the first bonding area The bonding line, the second bonding line and the junction of the first bonding area and the second bonding area together define a first accommodating space.

In one embodiment, the first surface of the base layer further has a third bonding area, the third bonding area is disposed between the second edge of the base layer and the fold line; the second surface of the buffer layer There is also a fourth bonding area on it, and the third bonding area is used for bonding with the fourth bonding area; another part of the base layer, another part of the buffer layer, the first adhesion line, the second adhesion line, And the junction of the third bonding area and the fourth bonding area together defines a second accommodating space; another part of the base layer, another part of the buffer layer, the first adhesion line, the second adhesion line, The junction of the first binding region and the second binding region and the junction of the third binding region and the fourth binding region jointly define an interlayer space.

In one embodiment, the first surface of the base layer further has a fifth bonding area, the second surface of the buffer layer has a sixth bonding area, and the fifth bonding area is used for bonding with the sixth bonding area; The interlayer space includes a first interlayer subspace and a second interlayer subspace, and the first interlayer subspace and the second interlayer subspace are separated by the junction of the fifth bonding region and the sixth bonding region.

In one embodiment, the area of the first bonding area is smaller than the area of the first surface of the base layer, and the area of the second bonding area is smaller than the area of the second surface of the buffer layer.

In one embodiment, the first end edge and the second end edge of the base layer are not aligned to form a folded cover, and the folded cover is used to seal the outer bag opening of the outer bag.

In one embodiment, the base layer further includes another adhesive and a release paper, the other adhesive is arranged on the folding cover, and the release paper is arranged on the other adhesive; the release paper is removed Then, the other adhesive is used to seal the opening of the outer bag.

In one embodiment, the base layer is made of an opaque material

The packaging material provided by the utility model has a flat surface, so the characters or patterns printed on it can be effectively presented; if it is necessary to write on it, it can also be free from indentation interference. In addition, since the side edges of the packaging material do not have band-like edges, the destruction bag made of the packaging material will have the maximum available internal accommodating space.

Description of drawings

FIG. 1 is a perspective view of a breaking bag made of commonly used packaging materials.

Fig. 2 is a perspective view of a breaking bag made by using the packaging material of the present invention.

FIG. 3 is a cross-sectional view of the rupture bag shown in FIG. 2 taken along line 3-3.

FIG. 4 is a cross-sectional view of the rupture bag shown in FIG. 2 taken along line 4-4.

Fig. 5 is a cross-sectional view similar to Fig. 3, showing an alternate method of breaking the bag.

FIG. 6 is a flow chart illustrating the manufacturing method of the packaging material of the present invention.

FIG. 7 is a schematic diagram of laminating the base layer and the buffer layer of the packaging material of the present invention according to the aforementioned method.

8 is a schematic diagram of folding the base layer and the buffer layer of the packaging material of the present invention according to the aforementioned method.

Fig. 9 is a schematic diagram of the base layer and the buffer layer of the packaging material of the present invention being folded and then eagerly cut, and finally a finished product of the broken bag is made.

FIG. 10 is a cross-sectional view taken along line 10-10 of the schematic diagram of hot cutting of the base layer and the buffer layer shown in FIG. 9 .

Detailed ways

In order to explain the present invention more clearly, the preferred embodiments are given and described in detail with the drawings as follows.

The term "substantially equal" or "substantially equal" mentioned in the following embodiments means that the size of one element/structure is equal to the size of another element/structure. However, due to manufacturing tolerances or other factors, the size of the element/structure is not completely equal to the size of the other element/structure, that is, there may be a difference between the size of the element/structure and the size of the other element/structure Manufacturing/assembly tolerances, for example, the manufacturing/assembly tolerances may be within 5 mm, all within the scope of protection of the present invention.

Please refer to FIG. 2 to FIG. 4 , FIG. 2 is a broken bag 20 made by using the packaging material 100 of a preferred embodiment of the present invention, wherein FIG. 3 is a cross-sectional view along the line 3-3 in FIG. 2 , FIG. 4 It is a cross-sectional view as seen along line 4-4 in FIG. 2 . The breaking bag 20 has a double-layer structure, including an outer bag 22 and an inner bag 24, wherein the inner bag 24 is nested inside the outer bag 22, and the inner bag 24 has a storage space S1 inside, which can be used to accommodate articles. The opening of the breaking bag 20 can be subdivided into an outer bag opening 222 formed by the outer bag 22 and an inner bag opening 242 formed by the inner bag 24, wherein the outer bag 22 is provided with a folding cover 224 at the outer bag opening 222, It protrudes out of the inner bag 24 , and a first adhesive 226 is applied on the folding cover 224 , which is covered with a release paper 228 . By tearing off the release paper 228 and folding the cover 224 in reverse, the cover 224 and the other side surface of the outer bag 22 can be tightly adhered by the first adhesive 226, so that the outer bag opening 222 and the inner bag opening 242 are simultaneously closed. When it is closed, the effect of closing the mouth of the breaking bag 20 is achieved.

The outer bag 22 of the breaking bag 20 is formed by the base layer 110 of the packaging material 100 according to the preferred embodiment of the present invention, and the inner bag 24 is formed by the buffer layer 120 of the packaging material 100, wherein the base layer 110 is made of opaque material, and the buffer layer 120 It is a cushioning material. The base layer 110 has a first side edge 112 and a second side edge 114 , the buffer layer 120 has a third side edge 122 and a fourth side edge 124 , wherein the first side edge 112 and the third side edge 122 are adhered to form a first adhesion line L1 , the second side edge 114 and the fourth side edge 124 are adhered to form a second adhesion line L2 . The first side edge 112 and the second side edge 114 of the base layer 110 are separated by a first distance D1, the third side edge 122 and the fourth side edge 124 of the buffer layer 120 are separated by a second distance D2, and the first adhesion line L1 and the second side edge 124 are separated by a second distance D2. The tight line L2 is separated by a third distance D3. The first distance D1, the second distance D2, and the third distance D3 are substantially equal. In other words, the packaging material 100 (and the breaking bag 20 made of the packaging material 100 ) does not have the hem 10A of the conventional breaking bag 10 , so the storage space S1 inside the inner bag 24 can provide maximum use space.

In order to illustrate the relationship between the packaging material 100 of the preferred embodiment of the present invention and the rupture bag 20 made therefrom, it is defined that the base layer 110 of the packaging material 100 has a first end edge 116 , a second end edge 118 , and Fold line 119, and the buffer layer 120 has a third end edge 126 and a fourth end edge 128, wherein the first end edge 116 and the second end edge 118 are both connected to the first side edge 112 and the second side edge 114 of the base layer 110; the same Ground, the third edge 126 and the fourth edge 128 are both connected to the third side edge 122 and the fourth side edge 124 of the buffer layer 120 . The base layer 110 and the buffer layer 120 are folded together along the fold line 119, whereby the base layer 110 constitutes the outer bag 22; the buffer layer 120 constitutes the inner bag 24, and the third end edge 126 and the fourth end edge 128 form the aforementioned inner bag Opening 242. In addition, the first end edge 116 and the second end edge 118 of the base layer 110 are not aligned, thereby forming a folded cover 224 , and the folded cover 224 can be bent relative to the base layer 110 along the inversion line of the base layer 110 . The folded line and the second end edge 118 form the aforementioned outer bag opening 222 .

The base layer 110 and the buffer layer 120 of the packaging material 100 according to the preferred embodiment of the present invention are not only joined together by the side edges to form the first adhesion line L1 and the second adhesion line L2, and a second adhesion line is also applied between them. The agent 130 can further assist the adhesion of the base layer 110 and the buffer layer 120 . Specifically, the surface of the base layer 110 facing the buffer layer 120 is defined as the first surface 115 , the surface of the buffer layer 120 facing the base layer 110 is defined as the second surface 125 , wherein the first surface 115 has the first bonding area 115A, the second surface The 125 has a second bonding area 125A, the second adhesive 130 is disposed on at least one of the first bonding area 115A and the second bonding area 125A, so that the first bonding area 115A and the second bonding area 125A pass through the second adhesive 130 is combined to achieve the purpose of bonding the base layer 110 and the buffer layer 120 . The first bonding area 115A is located between the first edge 116 of the base layer 110 and the fold line 119 , and the second bonding area 125A is located on the buffer layer 120 corresponding to the first bonding area 115A. Through such a design, there is a first accommodating space S3 between the base layer 110 and the buffer layer 120 , wherein the first accommodating space S3 consists of a part of the base layer 110 , a part of the buffer layer 120 , the first adhesion line L1 , the second closet The bonding line L2 and the junction of the first bonding region 115A and the second bonding region 125A are jointly defined. The first accommodating space S3 can be used to conveniently place thin objects such as sheets of paper, and can also be easily taken out as needed.

Besides, the area of the first bonding region 115A is smaller than that of the first surface 115 of the base layer 110 , and the area of the second bonding region 125A is also smaller than that of the second surface 125 of the buffer layer 120 . Therefore, when the packaging material 100 according to the preferred embodiment of the present invention is made into the breaking bag 20, the inner bag 24 and the outer bag 22 are not completely bonded.

In addition, as shown in FIG. 3 , after the packaging material 100 of the preferred embodiment of the present invention is made into the breaking bag 20 , the third bonding area 115B may be correspondingly provided on the side of the breaking bag 20 without the folding cover 224 . On the first surface 115 , and a fourth bonding area 125B is disposed on the second surface 125 . Specifically, the third bonding area 115B is disposed between the second edge 118 of the base layer 110 and the folding line 119 , the fourth bonding area 125B is disposed corresponding to the third bonding area 115B, and the second adhesive 130 is also It is applied to at least one of the third bonding area 115B and the fourth bonding area 125B, so that the third bonding area 115B and the fourth bonding area 125B are also bonded by the second adhesive 130 . Through such a design, there is also a second accommodating space S4 between the outer bag 22 and the inner bag 24 of the breaking bag 20 , wherein the second accommodating space S4 consists of another part of the base layer 110 , another part of the buffer layer 120 , the second accommodating space S4 A bonding line L1, a second bonding line L2, and the junction of the third bonding region 115B and the fourth bonding region 125B are jointly defined. Moreover, another part of the base layer 110, another part of the buffer layer 120, the first adhesion line L1, the second adhesion line L2, the joint of the first bonding area 115A and the second bonding area 125A, and the third bonding area 115B and the The joints of the fourth joint regions 125B together define the interlayer space S2.

The mezzanine space S2 can be used to accommodate identification information (not shown), such as business cards, leaflets, or QR codes, and so on. It is understandable that, in such a usage situation, the base layer 110 should not be made of an opaque material, so as not to hinder the human eye or the scanner from reading the identification information. If the base layer 110 is made of opaque material as described in this embodiment, the identification information may be (but not limited to) an RFID tag, so even if the identification information is shielded by the base layer 100 , it can still be read by the sensor. Because the aforementioned interlayer space S2 will be affected by the first bonding line L1, the second bonding line L2, the junction of the first bonding area 115A and the second bonding area 125A, and the third bonding area 115B and the fourth bonding area 125B The junction is closed, and the aforementioned identification information placed inside the interlayer space S2 will not be accidentally dropped out.

Please refer to FIG. 5 , which is another preferred embodiment of the present invention, which has substantially the same design as the previous embodiment, except that the first surface 115 of the base layer 110 is further provided with a fifth bonding region 115C, and the second surface of the buffer layer 120 is provided with a fifth bonding region 115C. 125 is correspondingly provided with a sixth bonding area 125C, wherein the second adhesive 130 is also applied to at least one of the fifth bonding area 115C and the sixth bonding area 125C, so that the fifth bonding area 115C and the sixth bonding area 125C are also Bonded by the second adhesive 130 . In this embodiment, the fifth bonding area 115C is disposed at a position corresponding to the fold line 119, but the present invention is not limited to this, and the fifth bonding area 115C can also be disposed at a position on the first surface 115 different from the fold line 119, depending on the actual situation Depends. The interlayer space S2 is separated by the junction of the fifth bonding area 115C and the sixth bonding area 125C, and is divided into a first interlayer subspace S2A and a second interlayer subspace S2B. Therefore, the first interlayer subspace S2A and the second interlayer subspace S2B can be used to accommodate different identification information, so that the breaking bag 20 can be used more flexibly.

The present invention also provides a method for manufacturing the aforementioned packaging material 100 according to a preferred embodiment. Please refer to FIG. 6 for the steps, and please refer to FIG. 7 to FIG. 10 at the same time. First, a large-area base layer 110 is provided in step S01 , wherein the base layer 110 is pulled out from the base material barrel 80 and passed between the monolithic roller sets 82 to keep it flat. Next, in step S02 , the large-area buffer layer 120 is superimposed on the base layer 110 , wherein the buffer layer is pulled out from the buffer layer barrel 90 , and also passes between the monolithic roller sets 92 to keep it flat. The buffer layer 120 of the monolithic roller set 92 changes direction at the turning roller 94 , and then passes between the stacking roller sets 84 simultaneously with the base layer 110 , thereby completing the stacking of the base layer 110 and the buffer layer 120 .

It is worth mentioning that the second adhesive 130 is applied between the base layer 110 and the buffer layer 120 to adhere to each other, wherein the second glue 130 is provided by the dispensing head 70 and applied before the base layer 110 enters the lamination roller set 84 . on it. As mentioned above, in the manufacturing method of this embodiment, the first surface 115 of the base layer 110 faces the buffer layer 120 , the second surface 125 of the buffer layer 120 faces the base layer 110 , and the second adhesive 130 is applied to the first surface On at least one of the first bonding area 115A of the 115 and the second bonding area 125A of the second surface 125 , in this embodiment, the place where the base layer 110 is coated with the second adhesive 130 by the dispensing head 70 is the first bonding area. A bonding region 115A. The area of the first bonding area 115A is smaller than the area of the first surface 115 of the base layer 110, and the area of the second bonding area 125A is smaller than the area of the second surface 125 of the buffer layer 120, so the base layer 110 and the buffer layer 120 are not completely bonded. The aforementioned interlayer space S2 may be formed therebetween.

Preferably, the base layer 110 is made of an opaque material, the buffer layer 120 is a material with buffering properties, and the size of the base layer 110 is larger than that of the buffer layer 120 , so a part of the base layer 110 is not covered by the buffer layer 120 ( as shown in Figure 8). In a subsequent process, a first adhesive 226 may be provided on the portion of the base layer 110 not covered by the buffer layer 120 , and a release paper 228 may be provided on the first adhesive 226 .

Next, in step S03 , the laminated base layer 110 and the buffer layer 120 are cut out using a heat cutting tool, wherein the base layer 110 and the buffer layer 120 are melted by heat at the heat cutting place to form a line with each other. It is worth noting that, in order to make the packaging material 100 into the breaking bag 20 , step S03 further includes folding the superimposed base layer 110 and the buffer layer 120 along the folding line 119 . As shown in FIG. 8 , the laminated base layer 110 and the buffer layer 120 will be folded naturally after passing through the triangular folding member 60 , and another monolithic roller set 62 can be used to hold the folded base layer 110 and the buffer layer 120 . Flatten and cooperate with the pressing roller 64 to make the folded base layer 110 and the buffer layer 120 fit more closely.

As shown in FIGS. 9 and 10 , the hot-cutting tool is the hot-cutting knife 50 in this embodiment, and the method uses the hot-cutting knife 50 to cut the laminated base layer 110 and the buffer layer 120 , and when such an action is performed twice , the first adhesion line L1 and the second adhesion line L2 that the rupture bag 20 has as described above can be formed, respectively. Therefore, the distance between the first adhesion line L1 and the second adhesion line L2 is substantially equal to the first width W1 of the base layer 110 and the second width W2 of the buffer layer 120 after cutting. In other words, the sides of the base layer 110 and the buffer layer 120 are sealed by the first adhesion line L1 and the second adhesion line L2 , and do not have the edge pressing 10A of the commonly used packaging material 10 .

To sum up, the structure of the first adhesion line L1 and the second adhesion line L2 of the broken bag 20 formed by the hot cutting knife 50 in the present invention will make the first adhesion line L1 and the second adhesion line L2 The distance therebetween is substantially equal to the first width W1 of the base layer 110 and the second width W2 of the buffer layer 120 . In this way, the first adhesive line L1 and the second adhesive line L2 of the breaking bag 20 of the present invention are not the crimping formed by hot pressing (for example, the crimping 10A of the commonly used packaging material 10 shown in FIG. 1 ). ), but through the close tangent line formed by the hot cutting knife 50 to further save the width of the structure used to seal the sides of the base layer 110 and the buffer layer 120 under the same bag body size, thereby increasing the damage to the inside of the bag 20. space.

It is worth mentioning that the position of the first bonding area 115A to which the second adhesive 130 is applied can be properly adjusted in advance, so that after the base layer 110 and the buffer layer 120 are folded, the first bonding area 115A can be just positioned on the base layer 110 . Between the first end edge 116 and the folding line 119, the second bonding area 125A corresponds to the first bonding area 115A, whereby the first accommodating space S3 can be formed between the inner bag 24 and the outer bag 22 of the damaged bag 20 .

What's more, as mentioned above, the second adhesive 130 may be further applied to the third bonding area 115B on the first surface 115 of the base layer 110 and the fourth bonding area on the second surface 125 of the buffer layer 120 At least one of the 125B binds the third binding region 115B and the fourth binding region 125B to each other. The third bonding area 115B is disposed between the second end edge 118 and the fold line 119 of the base layer 110 , and the fourth bonding area 125B corresponds to the third bonding area 115B, thereby destroying the inner bag 24 and the outer bag 22 of the bag 20 Then a second accommodating space S4 can be formed.

Besides, according to another preferred embodiment of the present invention, the second adhesive 130 can also be applied to the fifth bonding area 115C of the first surface 115 and the sixth bonding area 125C of the second surface 125 In at least one of them, the fifth bonding area 115C and the sixth bonding area 125C are bonded to each other through the second adhesive 130 . The fifth bonding area 115C is disposed at the fold line 119 of the base layer 110, and the sixth bonding area 125C corresponds to the fifth bonding area 115C, whereby the interlayer space S2 can be divided into a first interlayer subspace S2A and a second interlayer subspace S2B .

So far, after the hot-cutting device described in step S03 is operated, the breaking bag 20 can be formed, wherein the base layer 110 forms the outer bag 22, and the first end edge 116 and the second end edge 118 of the base layer 110 form the outer bag opening 222; The buffer layer 120 forms the inner bag 24 , and the third end edge 126 and the fourth end edge 128 of the buffer layer 120 form the inner bag opening 242 . In this way, a storage space S1 is formed inside the inner bag 24 , and a folding cover 224 is formed at the portion of the base layer 110 not covered by the buffer layer 120 .

The packaging material 100 made according to the aforementioned method will have a flat surface without indentation because it does not go through the hot pressing method, which is suitable for printing or writing; The storage space S1 of the finished breaking bag 20 will provide the maximum available space.

The above description is only a preferred feasible embodiment of the present invention, and all equivalent changes of the structure and method by applying the description and claims of the present invention should be included in the scope of the patent of the present invention.

【Symbol Description】

10 Sabotage Bags

12 outer layers

14 inner layers

16 fold

162 Adhesive

18 release paper

10A Ribbon Edge

100 packs

110 Grassroots

112 first side edge 114 second side edge 115 first surface

115A First binding region 115B Third binding region 115C Fifth binding region

116 First edge 118 Second edge 119 Fold line

120 buffer layers

122 Third side edge 124 Fourth side edge 125 Second surface

125A Second binding region 125B Fourth binding region 125C Sixth binding region

126 Third edge 128 Fourth edge

130 Second Adhesive

20 Sabotage Bags

22 outer pockets

222 Outer bag opening 224 Flap cover 226 Primary adhesive

228 release paper

24 inner pockets

242 inner pocket opening

50 Hot Cutter

60 Folds 62 Monolithic Rollers 64 Press Rollers

70 Dispensing Tips

80 Base barrel 82 Monolithic roller set 84 Laminated roller set

90 Cushion Barrel 92 Monolithic Roller Set 94 Steering Roller

S1 storage space

S2 Mezzanine space

S2A first mezzanine subspace

S2B second mezzanine subspace

S3 first accommodation space

S4 Second accommodating space

L1 first seal line

L2 Second Bond Line

D1 first distance

D2 second distance

D3 third distance

W1 first width

W2 second width

H hot tangent

S01, S02, S03 steps.

Claims (10)

1. a packaging material, is characterized in that, comprises: a base layer having a first side edge and a second side edge; and a buffer layer, which is superimposed on the base layer and has a third side edge and a fourth side edge; Wherein, the first side edge of the base layer and the third side edge of the buffer layer are closely spaced into a first bonding line, and the second side edge of the base layer and the fourth side edge of the buffer layer are closely spaced into a second line Fitting line. 2 . The packaging material according to claim 1 , wherein the distance between the first side edge and the second side edge of the base layer, the distance between the third side edge and the fourth side edge of the buffer layer, and the The distance between the first glue line and the second glue line is substantially equal. 3. The packaging material according to claim 1, wherein the base layer has a first surface facing the buffer layer, the first surface has a first bonding area; the buffer layer has a second surface facing the base layer, the second surface There is a second bonding area on it; the first bonding area is combined with the second bonding area; the area of the first bonding area is smaller than the area of the first surface of the base layer, and the area of the second bonding area is smaller than the buffer layer the area of the second surface. 4. The packaging material according to claim 3, further comprising: Adhesive, disposed on at least one of the first bonding area of the base layer and the second bonding area of the buffer layer, the first bonding area of the base layer and the second bonding area of the buffer layer through the adhesive combine. 5. The packaging material according to claim 1, wherein: the base layer has a fold line, a first end edge and a second end edge, and the fold line, the first end edge and the second end edge all connect the first side edge and the second side edge; the buffer layer has a third end edge and a fourth end edge, the third end edge and the fourth end edge are both connected to the third side edge and the fourth side edge; The base layer and the buffer layer are folded together along the fold line of the base layer, so that the base layer constitutes an outer bag, the buffer layer constitutes an inner bag, and a storage space is formed in the inner bag, and the inner bag is arranged in the outer bag. 6. The packaging material of claim 5, wherein: The base layer has a first surface facing the buffer layer, the first surface has a first bonding area, and the first bonding area is disposed between the first edge of the base layer and the fold line; the buffer layer has a second surface facing the base layer, the second surface has a second bonding area, the first bonding area is used for bonding with the second bonding area; A part of the base layer, a part of the buffer layer, the first adhesion line, the second adhesion line and the joint of the first bonding area and the second bonding area together define a first accommodating space. 7. The packaging material of claim 6, wherein: The first surface of the base layer also has a third bonding area, and the third bonding area is disposed between the second end edge of the base layer and the fold line; The second surface of the buffer layer further has a fourth bonding region, and the third bonding region is used for bonding with the fourth bonding region; Another part of the base layer, another part of the buffer layer, the first adhesion line, the second adhesion line, and the junction of the third bonding area and the fourth bonding area together define a second accommodating space; Another part of the base layer, another part of the buffer layer, the first bonding line, the second bonding line, the junction of the first bonding area and the second bonding area, and the third bonding area and the first bonding area The junctions of the four binding regions together define the interlayer space. 8. The packaging material according to claim 7, wherein the first surface of the base layer further has a fifth bonding area, the second surface of the buffer layer has a sixth bonding area, and the fifth bonding area is used for connecting with the The sixth bonding area is combined; the interlayer space includes a first interlayer subspace and a second interlayer subspace, and the first interlayer subspace and the second interlayer subspace are joined by the fifth bonding area and the sixth bonding area. separated by boundaries. 9 . The packaging material of claim 5 , wherein the area of the first bonding area is smaller than the area of the first surface of the base layer, and the area of the second bonding area is smaller than the area of the second surface of the buffer layer. 10 . 10 . The packaging material according to claim 5 , wherein the first end edge and the second end edge of the base layer are not aligned to form a flap, and the flap is used to seal the outer bag opening of the outer bag. 11 . , the base layer also includes another adhesive and release paper, the other adhesive is arranged on the folding cover, and the release paper is arranged on the other adhesive; after the release paper is removed, the other The adhesive is used to seal the outer bag opening.

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