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Polyamide (PA) 6/ polyethylene terephthalate (PET) material for two-direction stretching composite film and production method thereof

A biaxial stretching and composite film technology, applied in the field of organic polymer materials, can solve the problems of high cost, lack of performance and quality stability, etc., and achieve the effect of fast crystallization speed and excellent mechanical properties

Inactive Publication Date: 2013-06-05
威海联桥新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in terms of raw materials for BOPA membranes, they basically rely on imports. Although there are domestic productions, they are still lacking in performance and quality stability, and the cost is high.

Method used

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  • Polyamide (PA) 6/ polyethylene terephthalate (PET) material for two-direction stretching composite film and production method thereof
  • Polyamide (PA) 6/ polyethylene terephthalate (PET) material for two-direction stretching composite film and production method thereof

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Embodiment Construction

[0010] Below in conjunction with embodiment the present invention will be further described:

[0011] Dry polycaprolactam (PA6) and polyethylene terephthalate (PET) at 120°C for 4 hours, and keep the water content below 0.03%; dry the crystallization accelerator at 80°C for 4 hours, and keep the water content below 0.03%. Below 0.02%. Pour the aforementioned dried polycaprolactam (PA6), polyethylene terephthalate (PET), and crystallization accelerator into a high-speed mixer, stir at a low speed, and add a compatibilizer, a nucleating agent, and a smoothing agent while stirring. Agents, lubricants and antioxidants; after stirring at low speed for 2 minutes, turn to high speed stirring, and stir for another 2 minutes after the internal temperature of the high speed mixer reaches 40°C. Finally, the stirred and mixed raw materials are added to a twin-screw extruder for blending and extrusion. The blending processing temperature is 240-260 ° C, the screw speed is 300 r / min, and t...

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Abstract

The invention relates to the field of organic polymer, in particular to polyamide (PA) 6 / polyethylene terephthalate (PET) material for a two-direction stretching composite film and a production method of the PA 6 / PET material for the two-direction stretching composite film. Polycaprolactam, polyethylene glycol terephthalate, compatibilizer, nucleating agent, crystallization promoter agent, slipping agent, lubricant and antioxidant serve as raw materials which are dried, mixed, extruded and cut into particles. The PA 6 / PET material for the two-direction stretching composite film is characterized in that the raw materials comprise, by weight percentage, 55-65% of the polycaprolactam, 20-30% of the polyethylene glycol terephthalate, 5-8% of the compatibilizer, 4-8% of the crystallization promoter agent, 0.5-2% of the nucleating agent, 0.3-1.0% of the slipping agent, 0.5-1.0 % of the lubricant and 0.3-0.5% of the antioxidant. The PA 6 / PET material for the two-direction stretching composite film and the production method of the PA 6 / PET material have the advantages that the produced polycaprolactam / polyethylene glycol terephthalate alloy material is appropriate in stickiness, high in crystallization speed, and good in mechanical performance, and meets the requirement of the processing technology of the two-direction stretching composite film.

Description

technical field [0001] The invention relates to the field of organic polymer materials, in particular to a polycaprolactam (PA6) / polyethylene terephthalate (PET) alloy material for biaxially stretched composite films. Background technique [0002] We know that BOPA is the English abbreviation of Biaxially oriented polyamide (nylon) film. Biaxially oriented nylon film (BOPA) is an important material for the production of various composite packaging materials, and has become the third largest packaging material after BOPP and BOPET films. Compared with traditional polyvinyl chloride film, polyester film, etc., it has excellent performance characteristics such as crack resistance, impact resistance, puncture resistance and odor barrier properties, and is widely used as a protective film in food processing, medical hygiene, chemical products and other fields. Packaging materials are especially suitable for frozen packaging, vacuum packaging and retort packaging, and the preser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L23/08C08K13/02C08K5/20C08K3/36B29C47/92B29C48/92
CPCB29C48/08
Inventor 王保续兰浩薛刚秦立杰
Owner 威海联桥新材料科技股份有限公司
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