CN212335098U - High-barrier composite film easy to peel - Google Patents

Abstract

The utility model discloses a high resistant of easily peeling off separates complex film in packaging material technical field, its membranous layer structure is top layer, printing ink layer, first bond line, polyamide rete, barrier layer, oxygen layer, second bond line and easy peel layer from the extroversion in proper order, the utility model provides a high resistant of easily peeling off separates the complex film, and the polyester rete that has evaporated silicon dioxide through setting up is top layer, the polyamide rete that the nano-material modified, EVOH barrier layer, polycaprolactam and the oxygen absorbent mixed oxygen layer, makes the complex film have more excellent oxygen, steam separation performance, when guaranteeing the leakproofness of content, has the effect of easily peeling off, makes things convenient for the consumer to open, can prolong the shelf life of food moreover.

Description

High-barrier composite film easy to peel

Technical Field

The utility model relates to a packaging material technical field specifically is an easy high resistant of peeling off separates complex film.

Background

In recent years, with the rapid development of the packaging industry, packaging containers in various shapes such as bowl, cup, barrel and box shapes have been developed rapidly. Generally, such packages require a cover film material to be sealed with a bottom box, so that the contents in the package can be ensured to be in a sealed state, but the package often has the problem of too high heat seal strength and difficult uncovering. Meanwhile, containers made of polypropylene are widely used, and therefore, the demand for cover films for packaging such containers is increasing. Furthermore, in order to extend the shelf life of food, a lidding film material is required to have good oxygen barrier properties.

SUMMERY OF THE UTILITY MODEL

For solving the problem mentioned in the above-mentioned background art, the utility model provides an easy peel's high resistant separates complex film, its membranous layer structure is top layer, printing ink layer, first bond line, polyamide rete, barrier layer, oxygen uptake layer, second bond line and easy peel ply from outside to inside in proper order.

Preferably, the surface layer is a polyester film layer evaporated with silicon dioxide.

Preferably, the first adhesive layer is a polyurethane adhesive, and the second adhesive layer is a maleic anhydride graft-modified random polypropylene resin.

Preferably, the polyamide rete the barrier layer oxygen-absorbing layer the second bond line with easily peel off the layer and prepare through coextrusion biaxial stretching, the polyamide rete the barrier layer oxygen-absorbing layer the second bond line with easily peel off the total thickness of layer is 15 ~ 30 um.

Preferably, the polyamide film layer is a nano nylon layer, and the nano nylon layer is a nano material modified polyamide blend film layer.

Preferably, the barrier layer is an EVOH layer, wherein the EVOH has an ethylene content of 25-45%.

Preferably, the oxygen absorption layer is a polyamide blend film layer, wherein the polyamide blend is a mixed material of polycaprolactam and an oxygen absorbent.

Preferably, the easy-to-peel layer is modified polypropylene resin.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of reasonable design, the polyester rete that sets up the coating by vaporization and have silica is top layer, the modified polyamide rete of nano-material, and EVOH barrier layer, polycaprolactam and the oxygen uptake layer that oxygen absorbent mixes make the complex film have more excellent oxygen, steam separation performance, when guaranteeing the leakproofness of content, have the effect of easily peeling off, make things convenient for the consumer to open, can prolong the shelf life of food moreover.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

In the drawings, the components represented by the respective reference numerals are listed below:

1. a surface layer; 2. an ink layer; 3. a first adhesive layer; 4. a polyamide film layer; 5. a barrier layer; 6. an oxygen-absorbing layer; 7. a second adhesive layer; 8. an easy-to-peel layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the easy-to-peel high-barrier composite film comprises a surface layer 1, an ink layer 2, a first bonding layer 3, a polyamide film layer 4, a barrier layer 5, an oxygen absorption layer 6, a second bonding layer 7 and an easy-to-peel layer 8 from outside to inside in sequence.

Furthermore, the surface layer 1 is a polyester film layer evaporated with silicon dioxide, and has the effects of moisture resistance and oxygen barrier.

Further, the first adhesive layer 3 is a polyurethane adhesive, and the second adhesive layer 7 is a maleic anhydride graft modified random polypropylene resin.

Further, the polyamide film layer 4, the barrier layer 5, the oxygen absorption layer 6, the second bonding layer 7 and the easy-peeling layer 8 are prepared by coextrusion biaxial stretching, and the total thickness of the polyamide film layer 4, the barrier layer 5, the oxygen absorption layer 6, the second bonding layer 7 and the easy-peeling layer 8 is 15-30 micrometers.

Further, the polyamide film layer 4 is a nano nylon layer, the nano nylon layer is a polyamide blend film layer modified by nano materials, and specifically is a mixture of polycaprolactam and nano montmorillonite, wherein the particle size of the nano montmorillonite is 1 nm-100 nm, so that the oxygen barrier capability of the composite film can be improved. The surface of the polyamide film layer 4 is subjected to corona treatment, so that the polyamide film layer has low surface energy and is convenient to laminate with other film layers.

Furthermore, the barrier layer 5 is an EVOH layer, wherein the ethylene content in the EVOH layer is 25-45%.

Further, the oxygen absorbing layer 6 is a polyamide blend film layer, specifically a mixed material of polycaprolactam and an oxygen absorbent, and preferably, the oxygen absorbent is an iron-based oxygen absorbent.

Further, the easy-peeling layer 8 is a modified polypropylene resin.

One specific application of this embodiment is: the film layer structure sequentially comprises a surface layer 1, an ink layer 2, a first bonding layer 3, a polyamide film layer 4, a barrier layer 5, an oxygen absorption layer 6, a second bonding layer 7 and an easy peeling layer 8 from outside to inside, wherein the surface layer 1 is a polyester film layer evaporated with silicon dioxide, the ink layer 2 is printed with product information, the first bonding layer 3 is a polyurethane adhesive, the polyamide film layer 4 is a blended film layer of a mixed material of polycaprolactam and nano montmorillonite with the particle size of 1-100 nm, the barrier layer 5 is an EVOH layer with the ethylene content of 25-45%, the oxygen absorption layer 6 is a blended film layer of polycaprolactam and an iron oxygen absorption agent, the oxygen absorption agent is an AGELS oxygen absorption agent produced by Mitsubishi gas in Japan, the second bonding layer 7 is maleic anhydride grafted modified random polypropylene resin, and the easy peeling layer 8 is modified polypropylene resin; the polyamide film layer 4, the barrier layer 5, the oxygen absorption layer 6, the second bonding layer 7 and the easy stripping layer 8 are prepared by coextrusion biaxial stretching, and are bonded with the surface layer 1 and the ink layer 2 through the first bonding layer 3 to form a complete composite film.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. The utility model provides an easy high resistant of peeling off separates complex film which characterized in that: the film layer structure comprises a surface layer (1), an ink layer (2), a first bonding layer (3), a polyamide film layer (4), a barrier layer (5), an oxygen absorption layer (6), a second bonding layer (7) and an easy stripping layer (8) from outside to inside in sequence.

2. The easily peelable high barrier composite film according to claim 1, wherein: the surface layer (1) is a polyester film layer evaporated with silicon dioxide.

3. The easily peelable high barrier composite film according to claim 1, wherein: the first bonding layer (3) is a polyurethane adhesive, and the second bonding layer (7) is maleic anhydride graft modified random polypropylene resin.

4. The easily peelable high barrier composite film according to claim 1, wherein: polyamide rete (4), barrier layer (5) oxygen-absorbing layer (6) second bond line (7) with easy strippable layer (8) are through the preparation of coextrusion biaxial stretching, polyamide rete (4) barrier layer (5) oxygen-absorbing layer (6) second bond line (7) with easy strippable layer (8) total thickness is 15 ~ 30 um.

5. An easily peelable high barrier composite film according to claim 1 or 4, wherein: the easy-to-peel layer (8) is modified polypropylene resin.

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