Puncture-resistant bag-in-bag

Abstract

The utility model discloses a puncture-resistant bag-in-bag which comprises two inner bag pieces and two outer bag pieces, the two inner bag pieces are located between the two outer bag pieces, the inner bag pieces are matched with the outer bag pieces, the inner bag pieces are matched with the inner bag pieces, and the outer bag pieces are matched with the outer bag pieces. The outer bag piece comprises a heat-sealing PE film layer, a polyurethane glue layer and a surface nylon film layer, the surface nylon film layer and the heat-sealing PE film layer are arranged on the two sides of the polyurethane glue layer respectively, and the inner bag piece comprises a first PE film layer, a second PE film layer, a first nylon film layer and a second nylon film layer. The first nylon film layer and the second nylon film layer are arranged between the first PE film layer and the second PE film layer. The bag-in-bag has the following beneficial effects that the inner bag is manufactured by adopting the inner bag sheet compounded by the first PE film layer, the second PE film layer, the first nylon film layer and the second nylon film layer, so that the inner bag is not easily punctured when wrapping an object, and the bag-in-bag is more reliable in use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packaging material especially relates to a puncture -resistant bag in bag. BACKGROUND

[0002] The bag in bag is a kind of packaging bag currently commonly used, the structure of the bag in bag currently used as shown in patent announcement document CN209739769U, the bag in bag shown in this structure has four bag pieces, two inner bag pieces and two outer bag pieces, the edge of four bag pieces is bonded together by heat sealing mode, but the bag in bag of this structure uses the PE film piece, and the PE film piece is not puncture -resistant, so the bag in bag of this structure is not suitable for packing the object containing sharp angle, and its probability of bag breaking when packing the object containing sharp angle is relatively larger. UTILITY MODEL CONTENTS

[0003] The utility model provides a puncture -resistant bag in bag to the above problem, adopts the inner bag piece of four layers of composite of first PE film layer, second PE film layer, first nylon film layer and second nylon film layer to make inner bag, so that inner bag is not easily punctured when covering object, and it is more reliable when using.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of puncture -resistant bag in bag, including inner bag piece and outer bag piece, the inner bag piece has two pieces, the outer bag piece has two pieces, two inner bag pieces are located between two outer bag pieces, the inner bag piece is matched together with outer bag piece, the inner bag piece is matched together with inner bag piece,

[0006] The outer bag piece includes heat-sealed PE film layer, polyurethane adhesive layer and surface nylon film layer, the surface nylon film layer and heat-sealed PE film layer are respectively arranged on the two sides of polyurethane adhesive layer

[0007] The inner bag piece includes first PE film layer, second PE film layer, first nylon film layer and second nylon film layer, the first nylon film layer and second nylon film layer are arranged between first PE film layer and second PE film layer.

[0008] This bag in bag is prepared by two inner bag pieces and two outer bag pieces, the edge of the two inner bag pieces located in the middle is bonded together by heat sealing mode, the edge of outer bag piece and the edge of inner bag piece are bonded together by heat sealing mode, two outer bag pieces form outer bag, two inner bag pieces form inner bag, inner bag is used to place article, and the space between inner bag and outer bag plays a buffering role.

[0009] The inner bag piece of the bag is made of four layers of the first PE film layer, the second PE film layer, the first nylon film layer and the second nylon film layer, and the inner bag piece obtained by the four-layer combination has good puncture resistance, and the inner bag piece in the form of the composite film is not easily punctured when packaging objects, and thus has good wrapping performance and is not easily punctured during use.

[0010] In summary, the inner bag piece of the bag is made of four layers of the first PE film layer, the second PE film layer, the first nylon film layer and the second nylon film layer, so that the inner bag is not easily punctured when wrapping objects, and is more reliable during use.

[0011] Optionally, the surface nylon film layer is provided with a printing ink layer, and the printing ink layer is located between the polyurethane glue layer and the surface nylon film layer.

[0012] The printing ink layer is used for printing graphic information on the surface nylon film layer.

[0013] Optionally, the thickness of the printing ink layer is 2 um, the thickness of the polyurethane glue layer is 3 um, the thickness of the heat-seal PE film layer is 75 um, and the thickness of the surface nylon film layer is 15 um.

[0014] Optionally, an adhesive resin layer is arranged between the first PE film layer and the first nylon film layer, between the first nylon film layer and the second nylon film layer, and between the second nylon film layer and the second PE film layer.

[0015] The adhesive resin layer has the functions of adhesion and increasing the thickness of the inner bag piece and improving the puncture resistance of the inner bag piece.

[0016] Optionally, the thickness of the adhesive resin layer is 2.4 um.

[0017] Optionally, the thickness of the first PE film layer is 16 um, and the thickness of the second PE film layer is 16 um.

[0018] Optionally, the thickness of the first nylon film layer is 20 um, and the thickness of the second nylon film layer is 20 um.

[0019] The inner bag piece of the bag is made of four layers of the first PE film layer, the second PE film layer, the first nylon film layer and the second nylon film layer, so that the inner bag is not easily punctured when wrapping objects, and is more reliable during use. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0021] Figure 1 It is a disassembled structure diagram of the puncture-resistant bag-in-bag.

[0022] The various reference signs in the drawings are as follows: 1, first bag piece; 101, surface nylon film layer; 102, printing ink layer; 103, polyurethane glue layer; 104, heat-sealed PE film layer; 2, second bag piece; 201, first PE film layer; 202, first nylon film layer; 203, second nylon film layer; 204, second PE film layer; 205, adhesive resin layer. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the size of each part shown in the drawings is not drawn in accordance with the actual proportional relationship. The technology, method and equipment known to those skilled in the art can not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] As shown in the drawings, Figure 1 A puncture-resistant bag-in-bag includes an inner bag piece and an outer bag piece, the inner bag piece has two pieces, the outer bag piece has two pieces, the two inner bag pieces are located between the two outer bag pieces, the inner bag piece is matched together with the outer bag piece, the inner bag piece is matched together with the inner bag piece,

[0027] The outer bag piece comprises a heat-seal PE film layer 104, a polyurethane glue layer 103, and a surface nylon film layer 101, and the surface nylon film layer 101 and the heat-seal PE film layer 104 are respectively arranged on the two sides of the polyurethane glue layer 103

[0028] The inner bag piece comprises a first PE film layer 201, a second PE film layer 204, a first nylon film layer 202, and a second nylon film layer 203, and the first nylon film layer 202 and the second nylon film layer 203 are arranged between the first PE film layer 201 and the second PE film layer 204.

[0029] In the bag, two inner bag pieces and two outer bag pieces are used to prepare the bag, the edges of the two inner bag pieces in the middle are bonded together by heat sealing, the edges of the outer bag pieces and the edges of the inner bag pieces are bonded together by heat sealing, the two outer bag pieces form an outer bag, and the two inner bag pieces form an inner bag, the inner bag is used to place objects, and the space between the inner bag and the outer bag serves as a buffer.

[0030] In the bag, the inner bag piece is composed of the first PE film layer 201, the second PE film layer 204, the first nylon film layer 202, and the second nylon film layer 203, and the inner bag piece obtained by the four-layer combination has good puncture resistance. The inner bag piece of the composite film is not easy to be punctured when packaging objects, so it has good wrapping performance when used.

[0031] In summary, in the bag, the inner bag is made of the inner bag piece composed of the first PE film layer 201, the second PE film layer 204, the first nylon film layer 202, and the second nylon film layer 203, so that the inner bag is not easy to be punctured when wrapping objects, and is more reliable when used.

[0032] As shown in the accompanying drawings Figure 1 As shown in the accompanying drawings, the surface nylon film layer 101 is provided with a printing ink layer 102, and the printing ink layer 102 is located between the polyurethane glue layer 103 and the surface nylon film layer 101.

[0033] The printing ink layer 102 is used to print graphic information on the surface nylon film layer 101.

[0034] As shown in the accompanying drawings Figure 1 As shown in the accompanying drawings, the thickness of the printing ink layer is 24 um, the thickness of the polyurethane glue layer 103 is 3 um, the thickness of the heat-seal PE film layer is 75 um, and the thickness of the surface nylon film layer 101 is 15 um.

[0035] As shown in the accompanying drawings Figure 1As shown, an adhesive resin layer 205 is provided between the first PE film layer 201 and the first nylon film layer 202, an adhesive resin layer 205 is provided between the first nylon film layer 202 and the second nylon film layer 203, and an adhesive resin layer 205 is provided between the second nylon film layer 203 and the second PE film layer 204.

[0036] The adhesive resin layer 205 serves two purposes: first, it acts as an adhesive bonding layer; second, it increases the overall thickness of the inner bag sheet, thereby improving its puncture resistance.

[0037] As attached Figure 1 As shown, the thickness of the adhesive resin layer 205 is 2.4 μm.

[0038] As attached Figure 1 As shown, the thickness of the first PE film layer 201 is 16 μm, and the thickness of the second PE film layer 204 is 16 μm.

[0039] As attached Figure 1 As shown, the thickness of the first nylon film layer 202 is 40 μm, and the thickness of the second nylon film layer 203 is 40 μm.

[0040] Need to attach Figure 1 It should be noted that the appendix Figure 1 There are two dashed circles on the left and right sides of the bag, and these dashed circles mark the areas where the bags are heat-bonded together.

[0041] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A puncture-resistant bag-in-bag, comprising inner bag pieces and outer bag pieces, the inner bag pieces having two pieces, the outer bag pieces having two pieces, the two pieces of inner bag pieces being located between the two pieces of outer bag pieces, the inner bag pieces and the outer bag pieces being matched together, the inner bag pieces and the inner bag pieces being matched together, characterized in that, the outer bag pieces comprise a heat-sealed PE film layer, a polyurethane adhesive layer, and a surface nylon film layer, the surface nylon film layer and the heat-sealed PE film layer being respectively arranged on both sides of the polyurethane adhesive layer; the inner bag pieces comprise a first PE film layer, a second PE film layer, a first nylon film layer, and a second nylon film layer, the first nylon film layer and the second nylon film layer being arranged between the first PE film layer and the second PE film layer. A printing ink layer is arranged on the surface nylon film layer, and the printing ink layer is located between the polyurethane adhesive layer and the surface nylon film layer. The thickness of the printing ink layer is 2 um, the thickness of the polyurethane adhesive layer is 3 um, the thickness of the heat-sealed PE film layer is 75 um, and the thickness of the surface nylon film layer is 15 um.

2. A bag-in-bag according to claim 1, characterized in that An adhesive resin layer is arranged between the first PE film layer and the first nylon film layer, between the first nylon film layer and the second nylon film layer, and between the second nylon film layer and the second PE film layer.

3. A bag-in-bag according to claim 2, wherein The thickness of the adhesive resin layer is 2.4 um.

4. A bag-in-bag according to claim 1, wherein The thickness of the first PE film layer is 16 um, and the thickness of the second PE film layer is 16 um.

5. A bag-in-bag according to claim 4, wherein The thickness of the first nylon film layer is 20 um, and the thickness of the second nylon film layer is 20 um.

6. A bag-in-bag according to claim 1, wherein ​ 7. A bag-in-bag according to claim 1, wherein ​

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