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A straight line is easy to tear the aluminum -plated nylon film and its preparation method

A nylon film, nylon technology, used in chemical instruments and methods, flat products, other household appliances, etc., can solve the problems of difficult to meet market demand, few types, etc., achieve good linear tear performance, extended shelf life, excellent oxygen The effect of barrier properties

Active Publication Date: 2021-11-23
厦门长塑实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are related products of linear easy-tear film, but the types are still relatively small, it is difficult to meet the needs of the market

Method used

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  • A straight line is easy to tear the aluminum -plated nylon film and its preparation method
  • A straight line is easy to tear the aluminum -plated nylon film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The preparation method of the linear easy-to-tear aluminized nylon film provided by the embodiment of the present invention comprises:

[0035] Step 1, basement membrane preparation:

[0036] ①Mix the components in layers A, B, and C respectively in proportion, and disperse evenly through a high-speed mixer;

[0037] ② Melt and co-extrude the homogeneously mixed raw materials in ① through three extruders, and cast the melt through a T-shaped die to a quenched cast sheet with a chilled roller with a surface temperature of 15-35°C;

[0038] ③Put the cast sheet in ② in a 40-75°C water tank for about 1-2 minutes of humidity-conditioning treatment. After the humidity-conditioning, the surface of the cast sheet is dried with an air knife to dry the residual moisture on the surface, and then stretched synchronously or distributedly. The stretching temperature is 130-205°C, and the stretching ratio is 2.5×2.5-3.5×3.5;

[0039] ④ The film obtained in ③ is subjected to heat set...

Embodiment 1

[0042] Such as figure 1 As shown, a linear easy-to-tear aluminum-coated nylon film, the thickness of the base film is 15 μm, the thickness of the A and C layers is 2 μm, and the thickness of the aluminum vapor-deposited layer is 40 nm.

[0043] In terms of mass percentage, layer A and layer C are both composed of 69.5% nylon 6, 30% special nylon composition and 0.5% anti-stick nylon masterbatch; layer B is composed of 70% nylon 6 and 30% special nylon composition;

[0044] The special nylon composition is composed of MXD6-PA66 copolymer, PA512, PA66 / PA6 copolymer and MXD6-g-MAH, and the content ratio is 6:4:3:1.

Embodiment 2

[0046] Such as figure 1 As shown, a linear easy-to-tear aluminized nylon film, the thickness of the base film is 15 μm, the thickness of the A and C layers is 3 μm, and the thickness of the aluminum vapor deposition layer is 100 nm.

[0047] In terms of mass percentage, layer A and layer C are composed of 79% nylon 6, 20% special nylon composition and 1% anti-stick nylon masterbatch; layer B is composed of 65% nylon 6 and 35% special nylon composition;

[0048] The special nylon composition is composed of MXD6-PA66 copolymer, PA612, MXD6 / PA6 copolymer and MXD6-g-MAH, and the content ratio is 7:3:3:1.

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Abstract

The invention provides a linear easy-to-tear aluminized nylon film and a preparation method thereof, wherein the linear easy-to-tear aluminized nylon film has a film layer structure including a base film and an aluminum vapor-deposited layer; the base film is a three-layer co-extruded biaxially drawn Stretch nylon film, from top to bottom are A, B, C layers; A layer and C layer are made of 67% ~ 79.5% nylon 6, 20% ~ 30% special nylon composition, 0.5% ~ 3% anti-stick nylon The masterbatch is composed; the B layer is composed of 60%-70% nylon 6 and 30%-40% special nylon composition; the special nylon composition contains MXD6-PA66 copolymer, long carbon chain nylon, nylon copolymer and compatibilizer. The film has the advantages of excellent oxygen barrier performance and easy tearing in a straight line. Even the bags compounded with PP, PE and other films also have a straight line tearing performance. At the same time, it can preserve fragrance and extend the shelf life of food. It is especially suitable for Used in the packaging of snack food, medicine and other products.

Description

technical field [0001] The invention relates to the technical field of film materials, in particular to a linear easy-to-tear aluminized nylon film and a preparation method thereof. Background technique [0002] With the development of social economy, people are increasingly pursuing the convenience of life, especially in the field of packaging. Existing products used for food, medicine and other packaging usually use PE, PP and other materials as the heat-sealing layer, and the outer layer is made of PA, PET and other materials. The bag with this structure has the characteristics of high sealing strength and excellent barrier properties. But there is also the problem that the tearing resistance is large, and it cannot be torn straight along the scratches during use, which causes certain troubles in people's lives. Especially for the elderly and children, due to physical strength factors, it is more desirable that the product is easy to tear. Therefore, the demand for film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/34B32B27/16B32B27/18B32B33/00B65D65/40B29D7/01C08L77/02C08L77/06C08L77/00C08J5/18
CPCB29D7/01B32B27/08B32B27/16B32B27/18B32B27/34B32B33/00B32B2250/24B32B2307/582B32B2307/7244B32B2553/00B65D65/40C08J5/18C08J2377/02C08J2477/00C08J2477/06
Inventor 林新土郑伟陈曦刘运锦贾露李智尧廖贵何
Owner 厦门长塑实业有限公司
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