CN215246644U

CN215246644U - Paper-plastic-aluminum composite packaging bag with built-in straight-line easy-to-tear line

Info

Publication number: CN215246644U
Application number: CN202121618749.4U
Authority: CN
Inventors: 陈凯朗; 张钊明; 杨家发; 樊建军
Original assignee: Jinhua Shenhua Packaging Materials Co ltd
Current assignee: Jinhua Shenhua Packaging Materials Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-12-21
Anticipated expiration: 2031-07-15

Abstract

The utility model relates to a paper plastic aluminum composite packaging bag with a built-in straight easy-tearing line, which comprises a composite film with an easy-tearing line and a bag body made of the composite film, wherein the bag body comprises an upper bag body, a lower bag body and a folding bottom, the inner surfaces of the bottoms of the upper bag body and the lower bag body are respectively connected with the folding bottom through a first seal, the upper bag body and the lower bag body are connected with the top through a second seal, the easy-tearing line is arranged at a position close to the top seal, two ends of the easy-tearing line are symmetrically provided with easy-tearing openings, and the upper bag body, the lower bag body and the folding bottom are fixedly connected through a third seal of the bottom side; the composite film comprises a polyester film layer, a paper layer, a cast polyethylene layer, an aluminum foil film layer and a cast polyethylene heat-sealing layer which are sequentially arranged from top to bottom, wherein the easy-to-tear line is arranged on the paper layer. The utility model discloses can stably erect the bag body and put on the desktop, easily tear and do not influence pleasing to the eye again.

Description

Paper-plastic-aluminum composite packaging bag with built-in straight-line easy-to-tear line

Technical Field

The utility model belongs to the technical field of the packing, concretely relates to paper plastic aluminum composite packaging bag of built-in sharp line of easily tearing.

Background

At present, the food packaging in the market is confetti eight doors, and the material combination is more than one hundred flowers. The paper-plastic structure is particularly widely applied, and firstly, the paper has good stiffness, and the appearance of a finished product is more three-dimensional due to the addition of the paper; and secondly, the paper is a recyclable material, and is more in line with the development trend of the current society. Some higher-end packages can use 3 paper-aluminum-plastic structures, the materials are very thick and solid, the barrier property is good, and the shelf life of the product can be prolonged to a certain extent. However, this combination has poor opening performance, mainly in the paper and heat seal layers. Consumers easily tear askew when opening the package, which affects the experience. Currently, manufacturers treat the surface of the bag, mainly by laser cutting, but this way affects the aesthetic appearance of the bag.

Disclosure of Invention

The utility model discloses mainly to the above-mentioned problem that the wrapping bag exists, invented a paper plastic aluminum composite packaging bag of built-in straight line easy tear line, it can realize the straight line and easily tear, can not influence pleasing to the eye yet.

The above technical problem of the present invention can be solved by the following technical solutions: a paper-plastic-aluminum composite packaging bag with a built-in straight easy-to-tear line comprises a composite film with the easy-to-tear line and a bag body made of the composite film, wherein the bag body comprises an upper bag body, a lower bag body and a folding bottom, the inner surfaces of the bottoms of the upper bag body and the lower bag body are respectively connected with the folding bottom through first seals, the upper bag body and the lower bag body are connected with the side and the top through second seals, the easy-to-tear line is arranged at a position close to the top seal, easy-to-tear openings are symmetrically formed in two ends of the easy-to-tear line, and the upper bag body, the lower bag body and the folding bottom are fixedly connected through a third seal of the bottom side; the composite film comprises a polyester film layer, a paper layer, a cast polyethylene layer, an aluminum foil film layer and a cast polyethylene heat-sealing layer which are sequentially arranged from top to bottom, wherein the easy-to-tear line is arranged on the paper layer. The combination of the first seal, the second seal and the third seal and the stiff material of the paper-plastic-aluminum can facilitate the bag body to be vertically placed on a table top when the folding bottom is unfolded, and has better stability and difficult turnover; the easy-tearing line is arranged on the paper layer and cannot damage the polyester film layer on the surface, and the easy-tearing opening combined with the end part ensures that the paper layer is easy to tear and does not influence the appearance.

Preferably, the corona strength of the printed surface of the polyester film layer is greater than 52 dyne. The adhesive force of the packaging ink can be increased and the composite strength of the packaging ink and paper can be improved.

Preferably, the paper layer adopts kraft paper, and the compactness of the paper is more than 1. Adopt the kraft paper that does not contain the fluorescent agent of food level, the setting of paper compactness guarantees easy tearability.

Preferably, the thickness of the aluminum foil film layer is 6-9 μm, and the number of the adopted aluminum foil pinholes is less than 100 per square meter. This arrangement helps to ensure the barrier properties of the product.

Preferably, the composite film with the easy-to-tear lines has two layers, and the easy-to-tear lines on the composite film are arranged in a positive and negative alignment mode. When the bag is made, the easy-tearing lines are required to be aligned or the deviation is less than 0.5mm, so that the basic easy-tearing performance is ensured.

To sum up, compared with the prior art, the utility model has the following advantages:

1. the utility model adopts the paper aluminum-plastic composite, the material is thick and solid, the barrier property is good, the product shelf life can be prolonged to a certain extent, the packaging box is suitable for high-end product packaging, and the vertical placement is convenient with the combination of the first seal, the second seal and the third seal, and the turnover is not easy;

2. the utility model discloses set up in the complex film and easily tear the line, the curtain coating polyethylene on heat-seal layer adopts and extrudes composite technology, can reduce product toughness, improves the product and easily tears the nature.

Drawings

Fig. 1 is a schematic structural view of the bag body of the present invention;

FIG. 2 is a schematic cross-sectional view of a composite membrane of the present invention;

FIG. 3 is a schematic structural view of the double-layer composite film according to the present invention with the easy-tear lines aligned;

FIG. 4 is a schematic structural view of the tear line of the present invention on a paper layer;

FIG. 5 is a schematic view of the structure of the sealing portion of the present invention;

fig. 6 is a schematic perspective view of the folding bottom and upper bag of the present invention.

The reference numbers in the figures are:

1. an easily torn line; 2. compounding film; 3. a polyester film layer; 4. a paper layer; 5. casting a polyethylene layer; 6. an aluminum foil film layer; 7. casting a polyethylene heat-sealing layer; 8. a bag body; 9. an upper bag body; 10. a lower bag body; 11. folding the bottom; 12. a first seal; 13. a second seal; 14. a third seal; 15. the mouth is easy to tear.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1:

as shown in fig. 1-6, a paper plastic aluminum composite packaging bag with a built-in straight line easy-to-tear line comprises a composite film 2 with an easy-to-tear line 1 and a bag body 8 made of the composite film 2, wherein the bag body 8 comprises an upper bag body 9, a lower bag body 10 and a folding bottom 11, the inner surfaces of the bottoms of the upper bag body 9 and the lower bag body 10 are respectively connected with the folding bottom 11 through a first seal 12, the first seal 12 is used for connecting the upper bag body 9 and the lower bag body 10 to complete the connection of the side edge and the top through a second seal 13, the easy-to-tear line 1 is arranged at a position close to the top seal, two ends of the easy-to-tear line 1 are symmetrically provided with easy-to-tear openings 15, the upper bag body 9, the lower bag body 10 and the folding bottom 11 are fixedly connected through a third seal 14 of the bottom side edge, the third seal 14 is semicircular, and the radius of the third seal is smaller than the width of the second seal 13.

The composite film 2 comprises a polyester film layer 3, a paper layer 4, a cast polyethylene layer 5, an aluminum foil film layer 6 and a cast polyethylene heat-sealing layer 7 which are arranged in sequence from top to bottom, wherein the easy-to-tear line 1 is arranged on the paper layer 4; the polyester film layer 3 is a common-grade polyester film, and the corona intensity of the printing surface of the polyester film layer is 54 dynes; the paper layer 4 is made of kraft paper, the tightness of the paper is 1.2, and the easy-to-tear line 1 is arranged on the paper layer 4; the thickness of the aluminum foil film layer 6 is 8 mu m, and the number of the adopted aluminum foil pinholes is less than 100 per square meter; the composite film 2 with the easy-to-tear line 1 has two layers, and the easy-to-tear line 1 on the composite film is arranged in a positive and negative alignment mode.

The original manufacturing processes comprise printing, compounding, extruding and bag making, the process is adjusted, and after the polyester film layer 3 and the paper layer 4 are compounded, a new process is added: and (3) laser die cutting. One side of the paper layer 4 far away from the polyester film layer 3 is provided with a fixed easy-to-tear line 1 through laser equipment, but the surface printing polyester film layer 3 cannot be damaged, and the deviation of the control position is less than 0.5 mm. And performing the next process after die cutting is finished.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A paper plastic aluminum composite packaging bag with a built-in straight easy-to-tear line is characterized by comprising a composite film (2) with an easy-to-tear line (1) and a bag body (8) made of the composite film (2), the bag body (8) comprises an upper bag body (9), a lower bag body (10) and a folding bottom (11), the inner surfaces of the bottoms of the upper bag body (9) and the lower bag body (10) are respectively connected with the folding bottom (11) through a first seal (12), the upper bag body (9) and the lower bag body (10) are connected with the side edge and the top through a second seal (13), the easy-tearing line (1) is arranged at a position close to the top seal, the two ends of the easy-tearing line (1) are symmetrically provided with easy-tearing openings (15), and the upper bag body (9), the lower bag body (10) and the folding bottom (11) are fixedly connected through a third seal (14) at the bottom side edge; the composite film (2) comprises a polyester film layer (3), a paper layer (4), a cast polyethylene layer (5), an aluminum foil film layer (6) and a cast polyethylene heat-sealing layer (7) which are sequentially arranged from top to bottom, wherein the easy-to-tear line (1) is arranged on the paper layer (4).

2. The paper plastic aluminum composite packaging bag with the built-in straight easy-to-tear line as claimed in claim 1, wherein the corona strength of the printed surface of the polyester film layer (3) is greater than 52 dynes.

3. The paper-plastic-aluminum composite packaging bag with the built-in straight-line easy-to-tear line is characterized in that the paper layer (4) is made of kraft paper, and the paper tightness is greater than 1.

4. The paper-plastic-aluminum composite packaging bag with the built-in straight-line easy-to-tear line as claimed in claim 1, wherein the thickness of the aluminum foil film layer (6) is 6-9 μm, and the number of the adopted aluminum foil pinholes is less than 100/square meter.

5. The paper-plastic-aluminum composite packaging bag with the built-in straight easy-to-tear line as claimed in claim 1, wherein the composite film (2) with the easy-to-tear line (1) has two layers, and the easy-to-tear lines (1) are arranged in a positive and negative alignment.