CN213767568U

CN213767568U - Curtain coating machine-shaping's degradable heat shrink film

Info

Publication number: CN213767568U
Application number: CN202021661579.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Shandong Shanhe New Material Technology Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-07-23
Anticipated expiration: 2030-08-11

Abstract

The utility model provides a curtain coating machine-shaping's degradable heat shrink film, including heat shrink film body, the outside pressfitting of heat shrink film body has tensile layer, flame retardant coating and wearing layer, the tensile layer is located the outside of heat shrink film body, the flame retardant coating is located the outside on tensile layer, the wearing layer is located the outside of flame retardant coating, the tensile layer includes polyethylene layer and polypropylene layer, the flame retardant coating includes glass fiber layer and fire-retardant TPU layer, the wearing layer includes nylon layer and polytetrafluoroethylene layer. The utility model discloses a cooperation on polyethylene layer and polypropylene layer has strengthened the stretch-proofing effect of thermal contraction membrane body, prevents that the thermal contraction membrane body from being torn easily when using, has prolonged the life of thermal contraction membrane body, through the cooperation on nylon layer and polytetrafluoroethylene layer, has delayed the wearing and tearing speed on external counter tension layer, has further improved the effect on stretch-proofing layer.

Description

Curtain coating machine-shaping's degradable heat shrink film

Technical Field

The utility model relates to a heat shrink film field especially relates to a curtain coating machine-shaping's degradable heat shrink film.

Background

Heat shrink films are used for the sale and transportation of various products, their main function being to stabilize, cover and protect the products, and are widely used: the outer packing of various products such as food, medicine, disinfection tableware, cultural and sports goods, handicraft gift, printed matter, hardware plastic products, telephone, electronic and electrical appliances, especially in the aspect of the combined packing of irregular shape article or commodity, can satisfy the functions such as dampproofing dustproof, touch-proof steal and trade, transparent show of commodity, can increase the product outward appearance appeal again, also can be used for replacing various cartons, not only practices thrift the packaging cost, accords with the packing trend moreover, and shrink film workable is made: flat bags, circular arc bags, trapezoidal bags, three-dimensional bags and other special-shaped bags.

In order to ensure the production quality of the heat shrinkable film, users often process the heat shrinkable film by using a casting process, however, the stretch-resistant effect of the degradable heat shrinkable film formed by the traditional casting process is poor, and when the users use the heat shrinkable film, the heat shrinkable film is very easy to tear and damage, the products cannot be well protected, and the sale speed of the heat shrinkable film is greatly reduced.

Therefore, it is necessary to provide a cast degradable heat shrinkable film to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a curtain coating machine-shaping's degradable heat shrink film has solved the poor problem of the tensile effect of traditional curtain coating machine-shaping's degradable heat shrink film.

For solving the technical problem, the utility model provides a pair of curtain coating machine-shaping's degradable heat shrink film, including the heat shrink film body, the outside pressfitting of heat shrink film body has tensile layer, flame retardant coating and wearing layer, the tensile layer is located the outside of heat shrink film body, the flame retardant coating is located the outside on tensile layer, the wearing layer is located the outside of flame retardant coating, the tensile layer includes polyethylene layer and polypropylene layer, the flame retardant coating includes glass fiber layer and fire-retardant TPU layer, the wearing layer includes nylon layer and polytetrafluoroethylene layer.

Compared with the prior art, the utility model provides a pair of curtain coating machine-shaping's degradable heat shrink film has following beneficial effect:

the utility model provides a casting processing formed degradable heat shrinkage film,

1. the utility model discloses a cooperation on polyethylene layer and polypropylene layer has strengthened the stretch-proofing effect of thermal contraction membrane body, prevents that thermal contraction membrane body from being torn easily when using, has prolonged the life of thermal contraction membrane body, through the cooperation on nylon layer and polytetrafluoroethylene layer, has delayed the wearing and tearing speed on external antithetical couplet tensile layer, has further improved the effect on stretch-proofing layer, has prolonged the life of thermal contraction membrane body simultaneously, has solved the poor problem of the stretch-proofing effect of traditional curtain coating machine-shaping's degradable thermal contraction membrane.

2. The utility model improves the tensile property of the thermal contraction film body by the matching of the polyethylene layer and the polypropylene layer, prevents the thermal contraction film body from being easily torn, improves the fire resistance of the thermal contraction film body by the matching of the glass fiber layer and the flame-retardant TPU layer, avoids the change of the external temperature to enable the thermal contraction film body to burn, improves the wear resistance of the thermal contraction film body by the matching of the nylon layer and the polytetrafluoroethylene layer, slows down the wear speed of the external factors to the tensile layer and the fire-proof layer, further improves the effects of the tensile layer and the fire-proof layer, enables the thermal contraction film body to be rapidly degraded by mixing the polylactic acid and the inner cavity of the thermal contraction film body with the biodegradable agent, avoids polluting the environment, and is convenient for a user to control the cost by the thickness sum of the polyethylene layer and the polypropylene layer being 6 mu m, avoid the thickness on polyethylene layer and polypropylene layer too thick, influence the result of use of thermal contraction membrane body, the thickness sum through glass fiber layer and fire-retardant TPU layer is 5 mu m and the thickness sum on nylon layer and polytetrafluoroethylene layer is 4 mu m, and convenient to use person carries out accurate control to the cost, prevents the thickness on nylon layer and polytetrafluoroethylene layer too thick simultaneously, influences the fire prevention effect of flame retardant coating.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a cast degradable heat shrinkable film according to the present invention;

FIG. 2 is a partial cross-sectional view of the construction of the heat shrinkable film body of FIG. 1;

fig. 3 is a partial cross-sectional view of the structure of the tensile layer, fire barrier layer, and wear layer shown in fig. 1.

Reference numbers in the figures: 1. a heat shrinkable film body; 2. a stretch resistant layer; 21. a polyethylene layer; 22. a polypropylene layer; 3. a fire barrier layer; 31. a glass fiber layer; 32. a flame retardant TPU layer; 4. a wear layer; 41. a nylon layer; 42. a polytetrafluoroethylene layer.

Detailed Description

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

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a preferred embodiment of a cast degradable heat shrinkable film according to the present invention; FIG. 2 is a partial cross-sectional view of the construction of the heat shrinkable film body of FIG. 1; fig. 3 is a partial sectional view of the structure of the tensile layer, the fire-retardant layer and the wear-resistant layer shown in fig. 1, and the degradable heat shrinkable film formed by tape casting comprises a heat shrinkable film body 1, wherein the tensile layer 2, the fire-retardant layer 3 and the wear-resistant layer 4 are pressed on the outer side of the heat shrinkable film body 1, the tensile layer 2 is located on the outer side of the heat shrinkable film body 1, the fire-retardant layer 3 is located on the outer side of the tensile layer 2, the wear-resistant layer 4 is located on the outer side of the fire-retardant layer 3, the tensile layer 2 comprises a polyethylene layer 21 and a polypropylene layer 22, the fire-retardant layer 3 comprises a glass fiber layer 31 and a flame-retardant TPU layer 32, and the wear-resistant layer 4 comprises a nylon layer 41 and a polytetrafluoroethylene layer 42.

The polyethylene layer 21 is positioned on the outer side of the heat shrinkable film body 1, the polypropylene layer 22 is positioned on the outer side of the polyethylene layer 21, and the polyethylene layer 21 and the polypropylene layer 22 are matched, so that the tensile resistance of the heat shrinkable film body 1 is improved, and the heat shrinkable film body 1 is prevented from being easily torn.

The glass fiber layer 31 is located on the outer side of the polypropylene layer 22, the flame-retardant TPU layer 32 is located on the outer side of the glass fiber layer 31, and through the cooperation of the glass fiber layer 31 and the flame-retardant TPU layer 32, the fireproof performance of the heat shrinkable film body 1 is improved, and the heat shrinkable film body 1 is prevented from being burnt due to the change of the external temperature.

The nylon layer 41 is located on the outer side of the flame-retardant TPU layer 32, the polytetrafluoroethylene layer 42 is located on the outer side of the nylon layer 41, and through the matching of the nylon layer 41 and the polytetrafluoroethylene layer 42, the wear resistance of the heat shrinkable film body 1 is improved, the wear speed of the external factors to the stretching resistant layer 2 and the fireproof layer 3 is slowed down, and the effects of the stretching resistant layer 2 and the fireproof layer 3 are further improved.

The material of the heat shrinkable film body 1 is polylactic acid.

The thickness of polyethylene layer 21 and polypropylene layer 22 is the same, the thickness sum of polyethylene layer 21 and polypropylene layer 22 is 6 μm, and the thickness sum through polyethylene layer 21 and polypropylene layer 22 is 6 μm, and convenient to use person controls the cost, avoids the thickness of polyethylene layer 21 and polypropylene layer 22 too thick, influences the result of use of thermal contraction film body 1.

The thickness of glass fiber layer 31 and fire-retardant TPU layer 32 is the same, the thickness sum of glass fiber layer 31 and fire-retardant TPU layer 32 is 5 mu m, the thickness of nylon layer 41 and polytetrafluoroethylene layer 42 is the same, the thickness sum of nylon layer 41 and polytetrafluoroethylene layer 42 is 4 mu m, the thickness sum of through glass fiber layer 31 and fire-retardant TPU layer 32 is 5 mu m and the thickness sum of nylon layer 41 and polytetrafluoroethylene layer 42 is 4 mu m, and the user of being convenient for carries out accurate control to the cost, prevents simultaneously that the thickness of nylon layer 41 and polytetrafluoroethylene layer 42 is too thick, influences the fire prevention effect of flame retardant coating 3.

The utility model provides a pair of curtain coating machine-shaping's degradable heat shrink film's theory of operation as follows:

when the heat shrinkable film is used, the polyethylene layer 21 and the polypropylene layer 22 enhance the anti-stretching effect of the heat shrinkable film body 1, prevent the heat shrinkable film body 1 from being easily torn during use, prolong the service life of the heat shrinkable film body 1, improve the fireproof performance of the heat shrinkable film body 1 by the glass fiber layer 31 and the flame retardant TPU layer 32, avoid the combustion of the heat shrinkable film body 1 caused by the change of external temperature, simultaneously improve the wear resistance of the heat shrinkable film body 1 by the nylon layer 41 and the polytetrafluoroethylene layer 42, slow down the wear speed of the external factors on the anti-stretching layer 2 and the fireproof layer 3, further improve the effects of the anti-stretching layer 2 and the fireproof layer 3, and enable the heat shrinkable film body 1 to be rapidly degraded by mixing the polylactic acid and the inner cavity of the heat shrinkable film body 1 with the biodegradable agent, so as to avoid pollution to the environment.

the utility model discloses a cooperation on polyethylene layer 21 and polypropylene layer 22 has strengthened thermal contraction membrane body 1's stretch-proofing effect, prevent that thermal contraction membrane body 1 from being torn easily when using, prolonged thermal contraction membrane body 1's life, cooperation through nylon layer 41 and polytetrafluoroethylene layer 42 has delayed external antithetical couplet tensile layer 2's rate of wear, further improved stretch-proofing layer 2's effect, prolonged thermal contraction membrane body 1's life simultaneously, solved the poor problem of traditional curtain coating machine-shaping's tensile effect of degradable thermal contraction membrane.

Claims

1. A curtain coating processing formed degradable heat shrinkable film comprises a heat shrinkable film body (1) and is characterized in that: the outer side of the heat shrinkable film body (1) is pressed with a stretch-resistant layer (2), a fireproof layer (3) and a wear-resistant layer (4), the stretch-resistant layer (2) is located on the outer side of the heat shrinkable film body (1), the fireproof layer (3) is located on the outer side of the stretch-resistant layer (2), the wear-resistant layer (4) is located on the outer side of the fireproof layer (3), the stretch-resistant layer (2) comprises a polyethylene layer (21) and a polypropylene layer (22), the fireproof layer (3) comprises a glass fiber layer (31) and a flame-retardant TPU layer (32), and the wear-resistant layer (4) comprises a nylon layer (41) and a polytetrafluoroethylene layer (42).

2. The cast degradable heat shrinkable film of claim 1, wherein the polyethylene layer (21) is located outside the heat shrinkable film body (1), and the polypropylene layer (22) is located outside the polyethylene layer (21).

3. The cast degradable heat shrinkable film of claim 1, wherein the glass fiber layer (31) is located outside the polypropylene layer (22), and the flame retardant TPU layer (32) is located outside the glass fiber layer (31).

4. The cast degradable heat shrinkable film of claim 1, wherein the nylon layer (41) is located outside the flame retardant TPU layer (32), and the polytetrafluoroethylene layer (42) is located outside the nylon layer (41).

5. The cast degradable heat shrinkable film of claim 1, wherein the thickness of the polyethylene layer (21) and the polypropylene layer (22) are the same, and the sum of the thickness of the polyethylene layer (21) and the thickness of the polypropylene layer (22) is 6 μm.

6. The cast degradable heat shrinkable film of claim 1, wherein the thickness of the glass fiber layer (31) and the flame retardant TPU layer (32) are the same, the sum of the thickness of the glass fiber layer (31) and the thickness of the flame retardant TPU layer (32) is 5 μm, the thickness of the nylon layer (41) and the thickness of the polytetrafluoroethylene layer (42) are the same, and the sum of the thickness of the nylon layer (41) and the thickness of the polytetrafluoroethylene layer (42) is 4 μm.