CN215435428U

CN215435428U - Novel thermal shrinkage film

Info

Publication number: CN215435428U
Application number: CN202120482461.2U
Authority: CN
Inventors: 戴华胤; 戴家稷
Original assignee: Nantong Jerry New Material Co ltd
Current assignee: Nantong Jerry New Material Co ltd
Priority date: 2021-03-06
Filing date: 2021-03-06
Publication date: 2022-01-07
Anticipated expiration: 2031-03-06

Abstract

The utility model relates to a novel thermal shrinkage film, which comprises a first PE (polyethylene) base material layer, an adhesive layer, a second PE base material layer and a biodegradable material layer which are sequentially distributed; and a hollow window group is also arranged at one edge of the second PE substrate layer in the width direction and consists of a plurality of hollow windows distributed in parallel along the long axis direction of the second PE substrate layer. The utility model has the advantages that: according to the thermal shrinkage film, the first PE substrate layer, the adhesive layer, the second PE substrate layer and the biodegradable material layer are compounded, the second PE substrate layer is designed, the hollow window is formed in the second PE substrate layer, and the effect of the hollow window is utilized, so that curling generated by shrinkage can be reduced during shrinkage, and the flatness is improved.

Description

Novel thermal shrinkage film

Technical Field

The utility model relates to the field of heat-shrinkable films, in particular to a novel heat-shrinkable film.

Background

And the heat-shrinkable film can shrink when heated, so that the film is tightly coated on the product. The materials used are mainly various thermoplastic films. At first, a PVC shrink film is mainly used, the PVC shrink film is gradually reduced along with the continuous development of market demands, and multilayer co-extrusion shrink films of various PE, PP, PET, OPP, PVDC, POF and the like are rapidly developed and become the main stream of the market. Among the heat-shrinkable films, the PE heat-shrinkable film is widely used, is a material with good toughness, is not easy to crush by a common plastic crusher, is widely suitable for integral assembly packaging of products such as wines, pop-top cans, mineral water, various beverages, cloth and the like, and has good flexibility, strong impact resistance and tear resistance, difficult damage, moisture resistance and large shrinkage rate.

Currently, a PE heat-shrinkable film in use on the market, for example, one mentioned in patent CN204894698U, is composed of at least one substrate layer and a biodegradable material layer compounded with the substrate layer, the biodegradable material layer being a film made of biodegradable resin particles by an extruder.

The heat-shrinkable film comprises the base material layer and the biodegradable material layer, wherein the base material layer and the biodegradable material layer are both of conventional plane layer structures, and in the unreeling process, due to the fact that the thickness of the whole heat-shrinkable film is smaller, the curling phenomenon is easily generated in the shrinking process, and normal use is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel thermal shrinkage film capable of ensuring flatness.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the novel heat-shrinkable film has the innovation points that: comprises that

The first PE base material layer, the adhesive layer, the second PE base material layer and the biodegradable material layer are distributed in sequence;

and a hollow window group is also arranged at one edge of the second PE substrate layer in the width direction and consists of a plurality of hollow windows distributed in parallel along the long axis direction of the second PE substrate layer.

Furthermore, the hollow window is in an isosceles triangle shape.

Furthermore, the vertex angle of the hollow window faces the outer side of the second PE base material layer in the width direction.

Furthermore, the top angle and the bottom angle of the hollow window are chamfers.

Furthermore, a hollow window group is also arranged in the middle of the second PE base material layer.

Further, the biodegradable material layer is a film layer made of biodegradable resin particles by an extruder.

The utility model has the advantages that: according to the thermal shrinkage film, the first PE substrate layer, the adhesive layer, the second PE substrate layer and the biodegradable material layer are compounded, the second PE substrate layer is designed, the hollow window is formed in the second PE substrate layer, and the effect of the hollow window is utilized, so that curling generated by shrinkage can be reduced during shrinkage, and the flatness is improved.

And only improve the second PE substrate layer, then seal the protection in order to utilize first PE substrate layer, biodegradable material layer to the fretwork window of second PE substrate layer, avoid fretwork window department to produce the dust.

The hollow window is designed in an isosceles triangle shape, and the vertex angle of the hollow window faces the outer side of the second PE substrate layer in the width direction, so that the thermal shrinkage film is conveniently torn; and the design of chamfers is adopted for the top angle and the bottom angle of the hollow window, so that the structural strength of the hollow window is enhanced, and the phenomenon that the hollow window is outwards cracked is avoided.

The biodegradable material layer is a film layer made of biodegradable resin particles, so that the biodegradable material layer is high in decomposition speed and fine in residue breakage when discarded or buried in a natural environment, biomass contained in the biodegradable material layer can be completely decomposed within three months to one year, water and carbon dioxide are generated after decomposition, and pollution to the environment is reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of the novel heat shrink film of the present invention.

Fig. 2 is a schematic diagram of a second PE substrate layer in the present invention.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.

The novel heat-shrinkable film shown in figures 1 and 2 comprises

The first PE substrate layer 1, the gluing layer 2, the second PE substrate layer 3, the biodegradable material layer 4 that distribute in proper order.

A hollow window group is further formed at one edge of the second PE substrate layer 3 in the width direction, which is located at one edge of the second PE substrate layer 3, and the hollow window group is composed of a plurality of hollow windows 31 which are distributed in parallel along the long axis direction of the second PE substrate layer 3.

The hollow window 31 is in an isosceles triangle shape, and the vertex angle of the hollow window 31 faces the outside of the second PE base material layer 3 in the width direction. The hollow window 31 is designed in an isosceles triangle shape, and the vertex angle of the hollow window 31 faces the outer side of the second PE base material layer 3 in the width direction, so that the heat shrinkage film is easily torn.

The top angle and the bottom angle of the hollow window 31 are chamfers. The design of chamfers is adopted for both the top angle and the bottom angle of the hollow window 31, so that the structural strength of the hollow window 31 is enhanced, and the phenomenon that the hollow window is cracked outwards is avoided.

Also open at second PE substrate layer 3's middle part position has fretwork window group, and the structure that is located the fretwork window group of middle part position is the same with the structure that is located the fretwork window group of edge, and also designs fretwork window group to the middle part position of second PE substrate layer 3, also is in order to can be more convenient tearing the pyrocondensation membrane.

The biodegradable material layer 4 is a film layer made of biodegradable resin particles by an extruder. The biodegradable material layer 4 is a film layer made of biodegradable resin particles, so that the biodegradable material layer is high in decomposition speed and fine in residue breakage when discarded or buried in a natural environment, biomass contained in the biodegradable material layer can be completely decomposed within three months to one year, water and carbon dioxide are generated after decomposition, and pollution to the environment is reduced.

According to the thermal shrinkage film, the first PE substrate layer, the adhesive layer, the second PE substrate layer and the biodegradable material layer are compounded, the second PE substrate layer is designed, the hollow window is formed in the second PE substrate layer, and the effect of the hollow window is utilized, so that the curling generated by shrinkage can be reduced during shrinkage, and the flatness is improved; and only improve the second PE substrate layer, then seal the protection in order to utilize first PE substrate layer, biodegradable material layer to the fretwork window of second PE substrate layer, avoid fretwork window department to produce the dust.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A novel thermal shrinkage film is characterized in that: comprises that

2. The novel heat shrink film of claim 1, wherein: the hollow window is in an isosceles triangle shape.

3. The novel heat shrink film of claim 2, wherein: and the vertex angle of the hollow window faces to the outer side of the second PE base material layer in the width direction.

4. The novel heat shrink film of claim 2, wherein: and the top angle and the bottom angle of the hollow window are chamfers.

5. The novel heat shrink film of claim 1, wherein: and a hollow window group is also arranged in the middle of the second PE base material layer.

6. The novel heat shrink film of claim 1, wherein: the biodegradable material layer is a film layer made of biodegradable resin particles by an extruder.