CN217622625U

CN217622625U - Composite stretching cover film

Info

Publication number: CN217622625U
Application number: CN202123103226.9U
Authority: CN
Inventors: 翟永凤; 王树群; 姚宗超; 刘娜
Original assignee: Linyi Jinluo Wenrui Food Co Ltd
Current assignee: Linyi Jinluo Wenrui Food Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-10-21
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a compound tensile epiphragma mainly relates to the packaging film field for the product. A extranal packing for being directed at low temperature sausage class product, thickness are 110um ~ 120um, compound tensile epiphragma is equipped with fixed bonding's first layer, second floor and third layer in proper order from outer when packing, the first layer is transparent CPP material layer, the second floor is KPA material layer or EHA material layer, the printing has the pattern on the second floor, the third layer is transparent CPE material layer. The beneficial effects of the utility model reside in that: the secondary sterilization can avoid curling, and the appearance is smooth and beautiful.

Description

Composite stretching cover film

Technical Field

The utility model relates to a packaging film field for the product specifically is a compound tensile epiphragma.

Background

At present, in the aspect of printing cover films, the cover films with the structure of BOPP/EVOH base material films or BOPA/EVOH base material films are generally used for low-temperature meat products packaged by using stretch films, the thickness of the cover films is generally 80um or 90um, and when the cover films are matched with EVOH co-extruded base films, the phenomenon of curling of the stretch films appears after secondary sterilization, so that the appearance of the products is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound tensile epiphragma, it is used for the packing of low temperature sausage class product, avoids curling after the secondary sterilization, and the appearance is level and smooth pleasing to the eye.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

the utility model provides a compound tensile epiphragma for to the extranal packing of low temperature sausage class product, thickness is 110um ~ 120um, compound tensile epiphragma is equipped with fixed bonded first layer, second floor and third layer in proper order from outer when packing, the first layer is transparent CPP material layer, the second floor is KPA material layer or EHA material layer, the printing has the pattern on the second floor, the third layer is transparent CPE material layer.

The first layer and the second layer are fixedly bonded through composite glue, and the second layer and the third layer are fixedly bonded through the composite glue.

The composite stretching cover film is sequentially provided with a first layer, a composite adhesive bonding layer, a second layer, a composite adhesive bonding layer and a third layer which are fixedly bonded according to the sequence from outside to inside during packaging.

The second layer is a KPA material layer.

Contrast prior art, the beneficial effects of the utility model reside in that:

the invention solves the problem of the curling phenomenon of the stretching film after secondary sterilization of the stretching cover film with the traditional structure, improves the display effect and the attractiveness of the product in the terminal market, and can also meet the function of printing the front side and the back side of the product. The stretched cover film with the structure is suitable for products with the secondary sterilization temperature of less than or equal to 105 ℃ and the constant temperature time of less than or equal to 30 min. The stretching cover film with the structure and the stretching co-extrusion film with the surface layer made of PP have better matching effect (are matched in material structure), and particularly are products with larger packaging films.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.

A composite stretch film for packing sausage is mainly used for packing low-temperature sausage products. The thickness is 110 um-120 um. The main structure comprises a first layer, a composite adhesive layer, a second layer, a composite adhesive layer and a third layer according to the sequence from one surface to the other surface;

the composite glue bonding layer is mainly used for bonding and fixing the first layer, the second layer and the third layer through gluing, and the thickness of the composite glue bonding layer is determined according to the thickness of the coated composite glue.

The first layer is an outer layer and is positioned on the outer side surface of a product package in specific application, specifically is a CPP material layer, the CPP refers to a cast polypropylene film which is also called an unstretched polypropylene film, and the CPP film has the characteristics of good transparency, high glossiness, good stiffness, good moisture resistance, excellent heat resistance, easiness in heat sealing and the like. As the outer layer structure of the product, the CPP material layer ensures that the product does not shrink after secondary sterilization.

The second layer is an intermediate layer and is positioned between the first layer and the third layer, and specifically is a KPA material layer or an EHA material layer;

KPA refers to nylon film coated with 2-3 umPVDC, and the main properties are as follows: (1) high tensile strength, good wear resistance and high softening point. (2) Has excellent impact resistance and bursting strength, and is easy to heat seal. (3) Has good smell barrier property. (4) The light transmittance is good, the glossiness is obviously improved after the biaxial stretching, the mechanical property is obviously improved, and the water vapor and air permeability is greatly reduced. This layer is used for printing and for achieving a functional effect, for printing a desired pattern, and for ensuring the barrier properties of the composite film.

The third layer is an inner layer, which is located on the inner side of the product package in specific application, specifically a CPE material layer. CPE refers to a cast polyethylene film, and the CPE film has high transparency, low haze, good flexibility, good cold resistance and good heat sealing performance.

In the film structure, the CPP material layer of the outer layer has good stiffness and is hard, and the CPP material layer hardly shrinks after secondary sterilization; the middle KPA material layer is a printing layer, can meet the requirements of printing positive and negative patterns, simultaneously has the function of blocking oxygen and water vapor from permeating, is a main protective layer of the product, and prevents the deterioration problem of the product in the shelf life; the CPE material layer positioned on the inner layer of the product package mainly plays a role in heat sealing and performs good heat sealing with the bottom film.

Claims

1. The utility model provides a compound tensile epiphragma, its characterized in that for to the extranal packing of low temperature sausage class product, thickness is 110um ~ 120um, compound tensile epiphragma is equipped with fixed bonding's first layer, second floor and third layer in proper order from outer when packing, the first layer is transparent CPP material layer, the second floor is KPA material layer or EHA material layer, the printing has the pattern on the second floor, the third layer is transparent CPE material layer.

2. The composite stretch mulch film according to claim 1 wherein the first and second layers are adhesively secured by a composite glue and the second and third layers are adhesively secured by a composite glue.

3. The composite stretch film according to claim 1, wherein the composite stretch film has a first layer, a composite adhesive layer, a second layer, a composite adhesive layer and a third layer, which are fixedly bonded, in this order from the outside to the inside when packaged.

4. The composite stretch cover film of claim 1, wherein the second layer is a layer of KPA material.