Paper-plastic packaging bag

Abstract

The utility model discloses a paper-plastic packaging bag which comprises bag pieces, the bag pieces are matched together to form a bag body, the bag body is provided with a bag opening, each bag piece comprises a paper layer, a lamination resin layer and an ink layer, the ink layer and the lamination resin layer are arranged on the two sides of the paper layer respectively, the lamination resin layer is located in the bag body, and the ink layer is located in the bag body. The printing ink layer is located outside the bag body, the thickness of the paper layer is larger than that of the laminating resin layer, and the thickness of the laminating resin layer is larger than that of the printing ink layer. The paper-plastic packaging bag has the following beneficial effects that the bag sheet is formed by compounding the laminating resin layer and the paper layer, so that the whole bag body cannot be layered and cracked, and the whole bag body does not have peculiar smell.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packing supplies, especially to a paper-plastic packaging bag. BACKGROUND

[0002] The paper-plastic sealing bag is a commonly used packaging bag at present, and the patent publication document CN114228293A discloses a composite film for preparing a paper-plastic sealing bag. The composite film of this structure includes a paper film and a heat-sealing film. The paper film and the heat-sealing film are bonded by PVA coating liquid. The composite film of this structure relies on PVA to bond the paper film and the heat-sealing film. Therefore, the composite strength between the paper film and the heat-sealing film is relatively low, and there is solvent residue, which causes odor problems after bag making. SUMMARY

[0003] In view of the above problems, the utility model provides a paper-plastic packaging bag. The bag piece is composed of a resin layer and a paper layer. The entire bag body will not delaminate and crack, and there is no odor.

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

[0005] A paper-plastic packaging bag includes a bag piece. The bag pieces are combined to form a bag body. The bag body has a bag opening. The bag piece includes a paper layer, a resin layer, and an ink layer. The ink layer and the resin layer are respectively arranged on both sides of the paper layer. The resin layer is located inside the bag body, and the ink layer is located outside the bag body. The thickness of the paper layer is greater than that of the resin layer, and the thickness of the resin layer is greater than that of the ink layer.

[0006] The packaging bag is formed by hot combining two bag pieces. The bag piece is composed of a paper layer and a resin layer. The ink layer is coated on the paper layer. The resin layer is used for heat sealing. In this packaging bag, the bag piece is composed of a resin layer and a paper layer. The composite strength of the resin layer and the paper layer is high. When the bag body is made, it will not delaminate and crack. There is no solvent residue, and there is no odor. The resin used in the resin layer can be PE resin or PP resin.

[0007] In summary, in this packaging bag, the bag piece is composed of a resin layer and a paper layer. The entire bag body will not delaminate and crack, and there is no odor.

[0008] Optionally, a sealing clamp chain is arranged on the bag body. The sealing clamp chain is located inside the bag body and at the bag opening.

[0009] The sealing clamp chain is used to close the bag opening.

[0010] Optionally, the bag body is provided with a heat-sealed part at the edge thereof, the bag body is provided with a tearable opening, and the tearable opening is located at the heat-sealed part and has a triangular shape.

[0011] In the packaging bag, the bag opening of the bag body can be sealed by heat-sealing when needed, and the bag body can be torn by the tearable opening when needed, thereby realizing opening of the bag.

[0012] Optionally, the tearable opening is located between the sealing clamping chain and the bag opening.

[0013] Optionally, the packaging bag further comprises a hard paper sheet, and the hard paper sheet is arranged in the bag body and located between the tearable opening of the bag sheet and the sealing clamping chain.

[0014] The thickness of the hard paper sheet is greater than that of the paper layer, and the hardness of the hard paper sheet is greater than that of the bag sheet, so that the hard paper sheet plays a guiding role when the bag body is torn, the tearing opening of the bag body is along the direction of the hard paper sheet, a too large tearing opening is not formed, and the sealing clamping chain is not torn.

[0015] Optionally, the hard paper sheet has two pieces, and the two pieces of hard paper sheet are located on two inner walls of the bag body, respectively.

[0016] Optionally, the hard paper sheet is in parallel and non-contact with the sealing clamping chain.

[0017] Optionally, the thickness of the hard paper sheet is greater than that of the resin layer.

[0018] The packaging bag has the following beneficial effects: the bag sheet is composed of the resin layer and the paper layer, the bag body is not layered and cracked, and the bag body has no peculiar smell. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 is a structural schematic diagram of a paper-plastic packaging bag;

[0021] Figure 2 is a structural schematic diagram of a bag sheet.

[0022] In the drawings, the reference signs are as follows: 1, bag sheet; 101, resin layer; 102, paper layer; 103, ink layer; 11, heat-sealed part; 111, tearable opening; 12, bag opening; 2, sealing clamping chain; 3, hard paper sheet. DETAILED DESCRIPTION

[0023] In order to make the above objectives, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other modes without the specific details (e.g., dimensions, materials, etc.) set forth in this description. Therefore, the specification and drawings are to be regarded as merely illustrative and are not intended in any way to limit the scope of the present application.

[0025] In the description of the present application, it should be noted that the terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to scale. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but should be considered 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, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] As shown in the accompanying Figure 1 and the accompanying Figure 2 A paper-plastic packaging bag, comprising a bag piece 1, the bag piece 1 is fitted together to form a bag body, the bag body has a bag opening 12, the bag piece 1 comprises a paper layer 102, a film-coated resin layer 101 and an ink layer 103, the ink layer 103 and the film-coated resin layer 101 are respectively arranged on both sides of the paper layer 102, the film-coated resin layer 101 is located inside the bag body, the ink layer 103 is located outside the bag body, the thickness of the paper layer 102 is greater than the thickness of the film-coated resin layer 101, and the thickness of the film-coated resin layer 101 is greater than the thickness of the ink layer 103.

[0027] The specific packaging bag is formed by heat sealing two bag pieces 1 together, wherein the bag piece 1 is composed of a paper layer 102 and a film-coated resin layer 101, and an ink layer 103 is coated on the paper layer 102, and the film-coated resin layer 101 is used for heat sealing. In the packaging bag, the bag piece 1 is composed of the film-coated resin layer 101 and the paper layer 102, the composite strength of the film-coated resin layer 101 and the paper layer 102 is high, and the bag body will not crack and delaminate when it is made, and there is no solvent residue and no odor. The resin used in the film-coated resin layer 101 can be PE resin or PP resin.

[0028] In summary, in this type of packaging bag, the bag sheet 1 is made of a composite of a coated resin layer 101 and a paper layer 102, so the entire bag will not split or crack, and the entire bag has no odor.

[0029] As attached Figure 1 and appendix Figure 2 As shown, a sealing chain 2 is provided on the bag body. The sealing chain 2 is located inside the bag body and at the bag opening 12.

[0030] The function of the sealing chain 2 is to seal the bag opening 12.

[0031] As attached Figure 1 and appendix Figure 2 As shown, a heat-sealing part 11 is provided at the edge of the bag body, and an easy-tear opening 111 is provided on the bag body. The easy-tear opening 111 is located at the heat-sealing part 11 and is triangular in shape.

[0032] In this type of packaging bag, the bag opening 12 can be sealed by heat sealing when needed. After sealing, the bag can be opened by tearing open the easy-tear opening 111.

[0033] As attached Figure 1 and appendix Figure 2 As shown, the easy-tear opening 111 is located between the sealing chain 2 and the bag opening 12.

[0034] As attached Figure 1 and appendix Figure 2 As shown, it also includes a cardboard piece 3, which is placed inside the bag and located between the bag opening 1 and the sealing chain 2. When the sealing chain 2 is made of a biodegradable material, the entire packaging bag is a biodegradable packaging bag.

[0035] Specifically, the thickness of the cardboard sheet 3 is greater than the thickness of the paper layer 102, and the hardness of the cardboard sheet is greater than the hardness of the bag sheet 1. The function of the cardboard sheet 3 is to act as a guide when tearing, so that the tear opening of the entire bag body is along the direction of the cardboard sheet 3, and an excessively large tear opening is not formed, so as not to tear the sealing zipper 2.

[0036] The specific paper layers include, but are not limited to, kraft paper and wood pulp paper, and the cardboard sheets are made of the same raw materials as the paper layers.

[0037] As attached Figure 1 and appendix Figure 2 As shown, there are two pieces of cardboard 3, which are located on the two inner walls of the bag respectively.

[0038] As attached Figure 1 and appendix Figure 2 As shown, the cardboard sheet 3 and the sealing chain 2 are in a parallel and non-contact state.

[0039] As attached Figure 1and the attached drawings Figure 2 As shown in the drawings, the thickness of the cardboard 3 is greater than the thickness of the resin layer 101.

[0040] In the present embodiment, the ink in the ink layer is selected to be water-based ink, which can ensure that the packaging bag does not have an odor.

[0041] The above-described embodiments only express some embodiments of the present application, which are described in more detail and in more detail, but cannot be understood as limiting the scope of the patent of the present application. It should be noted that for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A paper-plastic packaging bag comprising a bag sheet, said bag sheet being fitted together to form a bag body, said bag body having a bag opening, characterized in that, The bag piece comprises a paper layer, a resin layer and an ink layer, the ink layer and the resin layer are respectively arranged on two sides of the paper layer, the resin layer is arranged in the bag body, the ink layer is arranged outside the bag body, the thickness of the paper layer is greater than the thickness of the resin layer, and the thickness of the resin layer is greater than the thickness of the ink layer.

2. A paper-plastic packaging bag according to claim 1, characterized in that The bag body is provided with a sealing clamp chain, the sealing clamp chain is arranged in the bag body, and the sealing clamp chain is arranged at the bag opening.

3. A paper-plastic packaging bag according to claim 2, characterized in that The bag body is provided with a heat sealing part at the edge, the bag body is provided with a tearable opening, and the tearable opening is arranged at the heat sealing part.

4. A paper-plastic packaging bag according to claim 3, characterized in that The tearable opening is arranged between the sealing clamp chain and the bag opening.

5. A paper-plastic packaging bag according to claim 3, characterized in that The bag body is further provided with a hard paper piece, the hard paper piece is arranged in the bag body, and the hard paper piece is arranged between the tearable opening of the bag piece and the sealing clamp chain.

6. A paper-plastic packaging bag according to claim 5, characterized in that The hard paper piece comprises two pieces, and the two pieces of the hard paper piece are respectively arranged on two inner walls of the bag body.

7. A paper-plastic packaging bag according to claim 5, characterized in that The hard paper piece is parallel to the sealing clamp chain and does not contact the sealing clamp chain.

8. A paper-plastic packaging bag according to claim 5, characterized in that The thickness of the hard paper piece is greater than the thickness of the resin layer.

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