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Transparent biaxially oriented polyamide embossed film and preparation method thereof

A polyamide film and two-way stretching technology, which is applied in the field of nylon packaging film, can solve the problems of large temperature and humidity dimensional change rate and high water absorption, so as to prevent large temperature and humidity dimensional change rate, maintain embossed texture, and improve glass quality. The effect of transition temperature

Inactive Publication Date: 2021-03-12
厦门长塑实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to overcome the weak point of prior art, a kind of transparent biaxially stretched polyamide embossed film and preparation method thereof are provided, solve the problem of biaxially stretched BOPA film embossing in the above-mentioned background technology, next It also solves the problems of high water absorption, large temperature and humidity dimensional change rate, etc.

Method used

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  • Transparent biaxially oriented polyamide embossed film and preparation method thereof
  • Transparent biaxially oriented polyamide embossed film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] A kind of transparent biaxially stretched polyamide embossed film of the present embodiment, as figure 1 , from top to bottom are sequentially arranged as an upper surface layer 30, a core layer 20 and a lower surface layer 10;

[0030] The upper surface layer 30 is an embossed layer consisting of 98% nylon 12, 1.0% opening agent and 1.0% slippery agent; the core layer 20 is composed of 95% PA6 and 5.0% PA6I; the The lower surface layer 10 is composed of 93% PA6, 5.0% PA6I, 1.0% anti-blocking agent and 1.0% slip agent.

[0031] The slip agent is composed of erucamide and oleamide.

[0032] The antiblocking agent consists of silicon dioxide.

[0033] The preparation method of the embossed film of the present embodiment is as follows:

[0034] Step a: Mix nylon 12, anti-blocking agent and smoothing agent according to the proportion of the upper surface layer 30, melt blend, extrude, and granulate through a twin-screw extruder to obtain an embossed layer masterbatch;

...

Embodiment 2

[0043] The difference between embodiment 2 and embodiment 1 is:

[0044] The upper surface layer is an embossed layer, which is composed of 99% nylon 12, 0.5% opening agent and 0.5% slippery agent; the described core layer is composed of 96% PA6 and 4.0% PA6I; the described The lower surface layer is composed of 95% PA6, 4.0% PA6I, 0.5% opening agent and 0.5% slip agent.

[0045] The slip agent is composed of erucamide and oleamide.

[0046] The anti-blocking agent is composed of silicon dioxide.

[0047] Prepared by the method of Example 1, wherein the temperature of the embossing roller is 50° C., the pressure of the embossing roller is 1.5 MPa, and the speed is 200 m / min.

[0048] The total thickness of the embossed film is 15 microns; the thickness of the upper surface layer accounts for 33.3% of the total thickness; the thickness of the core layer accounts for 50.0% of the total thickness; the thickness of the lower surface layer accounts for 16.7% of the total thicknes...

Embodiment 3

[0050] The difference between embodiment 3 and embodiment 1 is:

[0051]The upper surface layer is an embossed layer consisting of 99.5% nylon 12 and 0.5% slip agent; the core layer is composed of 97% PA6 and 3.0% PA6I; the lower surface layer is composed of 96% PA6, 3.0% PA6I, 0.5% opening agent and 0.5% slip agent.

[0052] The slip agent is composed of erucamide and oleamide.

[0053] Prepared by the method of Example 1, the temperature of the embossing roller is 50° C., the pressure of the embossing roller is 1.5 MPa, and the speed is 200 m / min.

[0054] The total thickness of the embossed film is 15 microns; the thickness of the upper surface layer accounts for 33.3% of the total thickness; the thickness of the core layer accounts for 50.0% of the total thickness; the thickness of the lower surface layer accounts for 16.7% of the total thickness %; the deepest depth of the embossing is 80% of the thickness of the upper surface layer.

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Abstract

The invention discloses a transparent biaxially oriented polyamide embossed film and a preparation method thereof. The transparent biaxially oriented polyamide embossed film sequentially comprises anembossed layer, a core layer and a lower surface layer, the embossed layer is composed of 98-99.5 wt% of nylon 12, 0-1 wt% of an anti-blocking agent and 0.5-1.0 wt% of a slipping agent. the core layeris composed of 95-97 wt% of PA6 and 3-5 wt% of PA6I; the lower surface layer is composed of 93-96 wt% of PA6, 3-5 wt% of PA6I, 0.5-1.0 wt% of an anti-blocking agent and 0.5-1.0 wt% of a slipping agent. The biaxially oriented polyamide embossed film obtained by adopting three-layer co-extrusion casting biaxial orientation and embossing through the embossing roller has the characteristics of clearlines, transparency, low hygroscopicity and the like, meanwhile, the product package is endowed with an obvious embossment stereoscopic impression, the artistic infection is enhanced, and the productis higher in end and has wide application value in the packaging field of foods and the like.

Description

technical field [0001] The invention belongs to the technical field of nylon packaging films, and in particular relates to a transparent biaxially stretched polyamide embossed film and a preparation method thereof. Background technique [0002] With the rapid development of the flexible packaging industry and the continuous improvement of people's living standards, while people are pursuing food health and hygiene, they also pay attention to the aesthetic sense, touch sense, and artistic sense that product packaging brings to people. Although there is embossing on PE film on the market, due to the characteristics of PE film itself and its poor temperature resistance, its application limitations are affected. [0003] The biaxially oriented polyamide film has good performance characteristics such as crack resistance, high temperature resistance, impact resistance, puncture resistance and gas barrier. It is an important material for the production of various composite packagin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/34C08L77/02C08L77/06C08K3/36C08K5/20C08J5/18
CPCB32B27/08B32B27/34C08J5/18B32B2307/726C08J2377/02C08J2477/06C08K3/36C08K5/20
Inventor 李智尧魏婕郑惠敏贾露陈曦廖贵何
Owner 厦门长塑实业有限公司
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