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Biaxially oriented matte BOPA (Biaxially oriented polyamide film) thin film and preparation method thereof

A biaxial stretching, film technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of high cost, cumbersome process, low output, etc., achieve good quality, overcome poor process quality. stable effect

Active Publication Date: 2013-02-13
FSPG HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unstable product quality, low output, cumbersome process and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The total thickness of the single-side frosted biaxially stretched matte BOPA film is 15 μm, which is composed of a frosted surface layer, an intermediate layer, and a smooth surface layer in sequence, and the layer thickness ratio of the three layers is 3:10:2.

[0023] The raw material of the middle layer is PA6.

[0024] The anti-blocking agent and slip agent in the raw material composition of the smooth surface layer and the slip agent in the raw material composition of the frosted surface layer are all made in the form of master batches. Specifically, the slip agent is PA6-based Concentration of 5wt% oleic acid amide masterbatch, anti-blocking agent based on PA6 concentration of 5wt% talcum powder masterbatch.

[0025] The raw material composition of the smooth surface layer is: 1.5wt% anti-blocking agent, 2wt% smoothing agent, and the rest is PA6.

[0026] The raw material composition of the matte surface layer is: 50wt% composite matting masterbatch, 2wt% slip a...

Embodiment 2

[0032] The total thickness of the biaxially stretched matt BOPA film with one side frosted is 20 μm, which is composed of a frosted surface layer, a first middle layer, a second middle layer, and a smooth surface layer in sequence, and the thickness ratio of the four layers is 4:8 :6:2.

[0033] The raw material of the first middle layer is MXD6 nylon.

[0034] The raw material of the second middle layer is a blend of PA6 and MXD6, and the mass ratio of the two is 7:3.

[0035] The anti-blocking agent and slip agent in the raw material composition of the smooth surface layer and the slip agent in the raw material composition of the frosted surface layer are all made in the form of master batches. Specifically, the anti-blocking agent is based on PA6 resin The concentration is 5% silica masterbatch, and the slip agent is 5% erucamide masterbatch based on PA6 resin.

[0036] The raw material composition of the smooth surface layer is: 1.5wt% of anti-blocking agent, 2wt% of sli...

Embodiment 3

[0044] The total thickness of the double-sided frosted biaxially stretched matt BOPA film is 60 μm, which is composed of the first frosted surface layer, the middle layer, and the second frosted surface layer in sequence, and the layer thickness ratio of the three layers is 1:10:1.

[0045] The smooth agent in the raw material composition of the first frosted surface layer and the second frosted surface layer below has all been made into the form of a masterbatch, specifically, the smooth agent is 5wt% erucamide with a concentration of PA6 as the matrix Masterbatch.

[0046] The raw material composition of the first frosted surface layer is: 50wt% composite matting masterbatch, 3wt% smooth agent, and the rest is PA6.

[0047] The raw material composition of the composite matting masterbatch is: 4wt% fumed alumina, 0.4wt% titanate coupling agent, 2wt% polyethylene wax, and the rest is PA6.

[0048] The preparation method of the composite matting masterbatch is as follows: firs...

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Abstract

The invention discloses a biaxially oriented matte BOPA (Biaxially oriented polyamide film) thin film which is formed by a single frosted surface layer, or is formed by laminating the frosted surface layer and a smooth surface layer, or is formed by sequentially laminating the frosted surface layer, a middle layer and the frosted surface layer or is formed by sequentially laminating the frosted surface layer, the middle layer and the smooth surface layer. A method for preparing the biaxially oriented matte BOPA thin film comprises the following steps of: 1, placing the raw materials on each layer into a corresponding extruder to carry out melting and carrying out coextrusion by a die head to form a layer structure; 2, cooling and forming to obtain a crude product nylon thin film; and 3, carrying out biaxial stretching, heat setting, corona treatment and winding on the crude product nylon thin film to obtain the matte BOPA thin film product. The invention can overcome the defects of unstable quality of a conventional process, low yield, fussy process and high cost of the product; and the produced biaxially oriented matte BOPA thin film has a high quality.

Description

technical field [0001] The invention relates to a biaxially stretched matt BOPA film and a manufacturing method thereof. Background technique [0002] Matte (or frosted) film has low gloss and diffuse reflection, giving people a soft, comfortable and hazy visual feeling. Biaxially oriented nylon film (BOPA) is widely used in various composite and packaging materials. Matte BOPA film is a fashionable and high-grade composite and packaging material, suitable for printing, lamination and surface stamping. Laminate with paper or other substrates (CPP, PE, BOPP, BOPE, etc.) after gluing on the glossy surface, so that the appearance has a three-dimensional effect and a good hand feeling, giving people a luxurious feeling. The matte BOPA film is used for the packaging of various foods (biscuits, dried fruits, tea, cakes, etc.), medicines, seeds, etc. after compounding, which can create an image of a natural product and show the high-end grade of the product. [0003] In the trad...

Claims

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Application Information

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IPC IPC(8): C08L77/00B32B27/06B32B27/34B29C55/14B29C55/16
Inventor 冯润财何庆东张广强刘磊董月平
Owner FSPG HI TECH
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