PE packaging film

Abstract

The utility model relates to the technical field of packaging films, in particular to a PE packaging film which comprises a film body and punching lines, three layers of folding parts are formed on the film body in a folding and hot pressing mode, the punching lines are formed on the folding parts, orthographic projections of the punching lines on different layers of the folding parts on the horizontal plane are adjacent and do not coincide, and the punching lines are arranged on the folding parts. The punching lines which are staggered with each other are arranged on the folding part, so that the film is easy to tear, pollution at the punching lines can be blocked, the film main body is prevented from being easily broken along the punching lines, and the film has practical significance and popularization value.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packaging film, especially to a PE packaging film. BACKGROUND

[0002] Packaging film is a kind of film material made of polymer, which is used to wrap food to make food packaging bags, and plays the role of isolating microorganisms, bacteria and external pollutants. It has multiple functions, including physical protection (such as moisture-proof, gas-proof, light-proof), barrier properties (such as gas barrier, water vapor barrier), chemical stability, and adaptation to different processing methods (such as heat sealing property), thereby effectively preventing food from being damp and deteriorated.

[0003] In order to facilitate the opening of the packaging bag, a perforation line is usually provided on the packaging bag, but the small cutting area of the film at the perforation line causes the film to be easily broken along the perforation line, and secondly, the perforation line is easy to connect the inside and outside of the packaging bag, which causes pollution. The purpose of the utility model is to improve the structure of the packaging film for manufacturing packaging bags to solve the above technical problems. SUMMARY

[0004] The utility model discloses a kind of PE packaging films, to solve the problems mentioned in background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: including film main body and perforation line, the film main body is folded and hot-pressed to form folding portion, the number of layers of folding portion is three, the perforation line is provided on folding portion, and the orthogonal projection of the perforation line on horizontal plane on different layers of folding portion is adjacent and no overlap.

[0006] To optimize the above technical scheme, further measures are taken as follows: the connecting line of the perforation line on different layers of folding portion is inclined, and the film can form an inclined tear after being torn along the perforation line.

[0007] As a further improvement to the above technical scheme: the film main body is folded and hot-pressed to form thickening portion on both sides of the folding portion, and the design of the thickening portion is intended to limit the deformation of the film main body, ensuring that the deformation of the film main body is limited to the folding portion when the film main body is torn along the perforation line.

[0008] As a further improvement to the technical scheme: the number of layers of the thickening portion is 2.

[0009] From the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages:

[0010] The PE packaging film provided by the utility model has practical significance and promotional value by setting perforation lines staggered on the folding portion, which can prevent pollution at the perforation line while ensuring easy tearing of the film, and avoid easy breaking of the film main body along the perforation line. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and are used to interpret the illustrative embodiments of the present application and their descriptions, and do not constitute improper limitations on the present application. In the drawings:

[0012] Figure 1 Schematic view of the side structure of the present application Figure 1 ;

[0013] Figure 2 Schematic view of the side structure of the present application Figure 2 ;

[0014] Figure 3 Schematic view of the side structure of the present application

[0015] In the drawings: film body - 1, folding part - 101, thickening part - 102, perforated line - 2 DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] EMBODIMENT

[0018] Please refer to Figures 1-3 The present application provides a PE packaging film, which comprises a film body 1 and a perforated line 2, and the film body 1 is made of PE material.

[0019] The folding part 101 is formed on the film body 1 by folding and hot pressing, the number of layers of the folding part 101 is three, the connecting lines of the perforated lines 2 on different layers of the folding part 101 are inclined, the thickening part 102 is formed on both sides of the folding part 101 by folding and hot pressing, and the number of layers of the thickening part 102 is two.

[0020] The perforated line 2 is arranged on the folding part 101, and the orthogonal projections of the perforated lines 2 on different layers of the folding part 101 on the horizontal plane are adjacent and do not overlap.

[0021] Working principle: the purpose of setting the perforation line 2 is to serve as the tearing opening of the film body 1, the perforation lines 2 of different layers of the folding part 101 are staggered with each other, which can avoid that the cross section area of the perforation line 2 is too small in the direction perpendicular to the film body 1, and avoid that the film body 1 is broken along the perforation line 2, the thickening part 102 on both sides of the folding part 101 is formed by folding the film body 1, and the purpose of setting the thickening part 102 is to limit the deformation of the film body 1 at the perforation line 2, so that the stress in the process of tearing the film body 1 is concentrated on the perforation line 2.

[0022] The perforation lines 2 of different layers of the folding part 101 are staggered with each other, which can close the perforation line 2, and avoid that the outside pollution pollutes the food through the perforation line 2 or the food crumbs leak through the perforation line 2.

[0023] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A PE packaging film, characterized in that: it comprises a film main body (1) and a punching line (2); a folding part (101) is formed on the film main body (1) by folding and hot pressing, and the folding part (101) has three layers; the punching line (2) is arranged on the folding part (101), and the orthogonal projections of the punching lines (2) on different layers of the folding part (101) on a horizontal plane are adjacent and do not overlap. The connecting lines of the punching lines (2) on different layers of the folding part (101) are inclined. The film main body (1) is folded and hot pressed to form a thickened part (102) on both sides of the folding part (101). The thickened part (102) has two layers.

2. The PE packaging film according to claim 1, characterized in that: ​ 3. A PE packaging film according to any one of claims 1-2, characterized in that: ​ 4. The PE packaging film according to claim 3, characterized in that: ​

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