High-strength composite packaging film suitable for plateau environment

Abstract

The utility model belongs to the technical field of packaging films, and particularly relates to a high-strength composite packaging film suitable for a plateau environment, which comprises a packaging film body, a cutting line is arranged on the packaging film body and penetrates through the packaging film body, the packaging film body comprises a printing layer, an anti-stretching layer is arranged on the lower surface of the printing layer, and the anti-stretching layer is arranged on the lower surface of the printing layer. A reinforcing layer is arranged on the lower surface of the tensile layer, and an inner layer is arranged on the lower surface of the reinforcing layer. The cutting lines are arranged on the package body at intervals of a certain length, so that free cutting can be carried out according to the required length, the flatness of a notch is guaranteed as far as possible, and the condition that the notch is stretched and deformed is not easy to occur, in addition, the wear-resistant bumps are arranged on the surface of the package body, and the service life of the package body is prolonged. Friction force is increased when the packaging body is in contact with an external object, and the packaging body is more wear-resistant.

Description

Technical Field

[0001] The utility model relates to the field of packaging films, in particular to a high-strength composite packaging film suitable for plateau environments. Background Art

[0002] The puffed food composite packaging film is a multi-layer composite film used to package puffed food, usually made of plastic materials such as polyethylene, polypropylene, etc. This packaging film has high heat resistance and moisture resistance, and can effectively protect the freshness and taste of puffed food and extend its shelf life. For example, the invention patent with announcement number CN108943953A discloses a method for preparing an inflatable packaging composite film suitable for puffed food in a plateau environment, which consists of a three-layer structure of a printing layer, a barrier layer, and a heat-sealing layer. Preferably, the printing layer is a biaxially oriented polyethylene film, the barrier layer is an aluminized polyester film or an aluminized polypropylene film, and the heat-sealing layer is a modified polyethylene with interlayer functional design.

[0003] However, when the existing composite packaging film is cut and used, the cut portion is easily stretched and deformed, thus affecting the use, and the overall tensile strength is poor, and bulging still occurs at high altitudes. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to provide a high-strength composite packaging film suitable for plateau environments, which solves the problem that the existing composite packaging film is easily stretched and deformed at the cut when cut and used, thus affecting its use, and at the same time solves the problem that the overall tensile resistance is poor and bulging still occurs due to high altitude air pressure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength composite packaging film suitable for plateau environment, comprising a packaging film body, a cutting line is opened on the packaging film body, and the cutting line runs through the packaging film body, the packaging film body comprises a printing layer, the lower surface of the printing layer is provided with an anti-stretching layer, the lower surface of the anti-stretching layer is provided with a reinforcing layer, and the lower surface of the reinforcing layer is provided with an inner layer.

[0006] Preferably, the upper surface of the packaging film body is provided with a plurality of evenly distributed wear-resistant bumps, which can increase the overall wear-resistant property.

[0007] Preferably, the printing layer is a biaxially oriented polypropylene film with a thickness of 15 microns. The biaxially oriented polypropylene film has good toughness, can be used for printing, and is not easy to break.

[0008] Preferably, the anti-stretching layer is a polyethylene film with a thickness of 16 micrometers. The anti-stretching performance of the whole can be further increased by providing the anti-stretching layer.

[0009] Preferably, the reinforcing layer is a polyester resin film with a thickness of 15 microns. The overall strength, tension and heat resistance can be increased by setting the reinforcing layer.

[0010] Preferably, the inner layer is a polyamide fiber film with a thickness of 15 microns. The inner layer is used as the inner layer of the packaging and is not easily deformed by heat.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model sets cutting lines at intervals of a certain length on the packaging body, so that the packaging body can be freely cut according to the required length, and the flatness of the incision is ensured as much as possible, and the incision is not easily stretched and deformed. In addition, wear-resistant protrusions are set on the surface of the packaging body to increase the friction between the packaging body and the external object when it contacts, making it more wear-resistant.

[0013] 2. The utility model designs the packaging body into a four-layer combination of a printing layer, an anti-stretching layer, a reinforcement layer and an inner layer, which is not only enhanced in strength and toughness, but also not easily deformed by heat, so that it is better suitable for high-altitude areas and not easy to bulge and deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 Schematic diagram of the packaging film body structure.

[0016] In the figure: 1, packaging film body; 2, cutting line; 3, wear-resistant protrusion; 11, printing layer; 12, anti-stretching layer; 13, reinforcement layer; 14, inner layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-2 A high-strength composite packaging film suitable for plateau environment includes a packaging film body 1, a cutting line 2 is provided on the packaging film body 1, and the cutting line 2 runs through the packaging film body 1, and a plurality of evenly distributed wear-resistant protrusions 3 are provided on the upper surface of the packaging film body 1. The wear-resistant protrusions 3 can increase the overall wear-resistant property.

[0019] See also Figure 2 The packaging film body 1 includes a printing layer 11, a stretch-resistant layer 12 is arranged on the lower surface of the printing layer 11, a reinforcement layer 13 is arranged on the lower surface of the stretch-resistant layer 12, an inner layer 14 is arranged on the lower surface of the reinforcement layer 13, and the printing layer 11 is a biaxially oriented polypropylene film with a thickness of 15 microns. The biaxially oriented polypropylene film has good toughness, can be used for printing, and is not easy to break. The stretch-resistant layer 12 is a polyethylene film with a thickness of 16 microns. By setting the stretch-resistant layer 12, the overall stretch resistance can be further increased. The reinforcement layer 13 is a polyester resin film with a thickness of 15 microns. By setting the reinforcement layer 13, the overall strength, tension and heat resistance can be increased. The inner layer 14 is a polyamide fiber film with a thickness of 15 microns. The inner layer 14 is used as the inner layer of the packaging and is not easily deformed by heat.

[0020] The specific implementation process of the utility model is as follows: first, the printing layer 11, the anti-stretching layer 12, the reinforcement layer 13 and the inner layer 14 are sequentially laminated, and the layers are connected with a common adhesive to finally form a packaging film body 1, and then wear-resistant protrusions 3 are pressed out on the packaging film body 1, and cutting lines 2 are set at intervals of a certain length, so that the film can be freely cut according to the required length, and the flatness of the incision is guaranteed as much as possible, and the incision is not prone to stretching and deformation.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength composite packaging film suitable for plateau environments, comprising a packaging film body (1), characterized in that: The packaging film body (1) is provided with a cutting line (2), and the cutting line (2) passes through the packaging film body (1); the upper surface of the packaging film body (1) is provided with a plurality of evenly distributed wear-resistant bumps (3); the packaging film body (1) comprises a printing layer (11); the lower surface of the printing layer (11) is provided with an anti-stretching layer (12); the lower surface of the anti-stretching layer (12) is provided with a reinforcing layer (13); the lower surface of the reinforcing layer (13) is provided with an inner layer (14).

2. The high-strength composite packaging film suitable for plateau environment according to claim 1, characterized in that: The printing layer (11) is a biaxially oriented polypropylene film with a thickness of 15 microns.

3. The high-strength composite packaging film suitable for plateau environment according to claim 1, characterized in that: The anti-stretching layer (12) is a polyethylene film with a thickness of 16 microns.

4. The high-strength composite packaging film suitable for plateau environment according to claim 1, characterized in that: The reinforcing layer (13) is a polyester resin film with a thickness of 15 microns.

5. The high-strength composite packaging film suitable for plateau environment according to claim 1, characterized in that: The inner layer (14) is a polyamide fiber membrane with a thickness of 15 microns.

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