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A kind of biaxially stretched polyester film and preparation method thereof

A biaxially oriented polyester and polyester film technology, applied in chemical instruments and methods, flat products, sustainable manufacturing/processing, etc., can solve the problems of coating pollution, difficult to control costs, product dosage restrictions, etc. High degree of production, lower production costs, and good quality stability

Active Publication Date: 2016-06-01
ZHEJIANG GREAT SOUTHEAST PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production methods of composite and aluminum-plated biaxially stretched polyester films mainly include coating and direct film drawing after adding masterbatch to the surface. Coating has a certain pollution effect on the surrounding environment, because its monomers will volatilize and stimulate the human body. Sexual substances lead to a certain limit on the amount of its products, and it is difficult to control the cost in the production process, so fewer manufacturers produce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of raw materials

[0035] Upper layer (masterbatch A): 100 parts of polyethylene terephthalate (polyethylene terephthalate (degree of polymerization: 100, molecular weight: 30,000, purchased from China Yizheng Chemical Fiber Company), 50 parts of silica (particle size: 3 μm) and 0.4 Tetrakis[α-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester.

[0036] Lower layer (masterbatch C): 100 parts of polyethylene terephthalate, 60 parts of silica (with a particle size of 1 μm) and 0.4 parts of tetrakis[α-(3,5-di-tert-butyl-4-hydroxybenzene base) propionate] pentaerythritol ester.

[0037] Middle layer (masterbatch B): 100 parts of polyethylene terephthalate (polymerization degree of 100, molecular weight of 30,000, purchased from China Yizheng Chemical Fiber Company) and 0.4 parts of tetrakis[α-(3,5-ditertiary Butyl 4-hydroxyphenyl) propionate] pentaerythritol ester.

[0038] (2) Mylar film

[0039] Send 15 parts of masterbatch A and 15 pa...

Embodiment 2

[0041] (1) Preparation of raw materials

[0042] Upper layer (masterbatch A): 100 parts of polyethylene terephthalate (polyethylene terephthalate (degree of polymerization: 100, molecular weight: 30,000, purchased from China Yizheng Chemical Fiber Company), 60 parts of silica (particle size: 2 μm and 0.4 parts Tetrakis[α-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester.

[0043] Lower layer (masterbatch C): 100 parts of polyethylene terephthalate, 70 parts of silica (0.5 μm particle size) and 0.4 parts of tetrakis[α-(3,5-di-tert-butyl 4-hydroxyl phenyl) propionate] pentaerythritol ester.

[0044] Middle layer (masterbatch B): 100 parts of polyethylene terephthalate (polymerization degree of 100, molecular weight of 30,000, purchased from China Yizheng Chemical Fiber Company) and 0.4 parts of tetrakis[α-(3,5-ditertiary Butyl 4-hydroxyphenyl) propionate] pentaerythritol ester.

[0045] (2) Polyethylene terephthalate film

[0046] Send 20 parts of masterbatch...

Embodiment 3

[0048] (1) Preparation of raw materials

[0049] Upper layer (masterbatch A): 100 parts of polyethylene terephthalate (polyethylene terephthalate (degree of polymerization: 100, molecular weight: 30,000, purchased from China Yizheng Chemical Fiber Company), 70 parts of silica (particle size: 3 μm and 0.4 parts Tetrakis[α-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester.

[0050] Lower layer (masterbatch C): 100 parts of polyethylene terephthalate, 80 parts of silica (0.5 μm in particle size) and 0.4 parts of tetrakis[α-(3,5-di-tert-butyl 4-hydroxyl phenyl) propionate] pentaerythritol ester.

[0051] Middle layer (masterbatch B): 100 parts of polyethylene terephthalate (polymerization degree of 100, molecular weight of 30,000, purchased from China Yizheng Chemical Fiber Company) and 0.4 parts of tetrakis[α-(3,5-ditertiary Butyl 4-hydroxyphenyl) propionate] pentaerythritol ester.

[0052] (2) Mylar film

[0053] Send 25 parts of masterbatch A and 25 parts ...

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Abstract

The invention discloses a bidirectional stretching polyester thin film. The polyester thin film includes an upper layer, a middle layer and a lower layer, the middle layer covers on the lower layer, the upper layer covers on the middle layer, and the upper layer, the middle layer and the lower layer are respectively extruded by an extruder in a molten state and then together go into a three-layer co-extrusion die head to be composited to form the polyester thin film; the mass parts of the upper layer, the middle layer and the lower layer comprise that the upper layer comprises 10-25 parts of a master batch A, the middle layer comprises 50-80 parts of a master batch B, and the lower layer comprises 10-25 parts of a master batch C. A certain proportion of a recycled material can be added in the production process of the prepared composited and aluminized bidirectional stretching polyester thin film, the cost of production can be greatly reduced, and industrialization requirements are well adopted; with adopting of a production technology for internal addition of a silica filler, and a stabilizer is introduced into the formulation, so that the composited and aluminized bidirectional stretching polyester thin film has the characteristics of high transparency, high glossiness, good quality stability and the like, wherein the light transmission rate is 89.5%, and the gloss (45 DEG) is 65%.

Description

(1) Technical field [0001] The invention belongs to the field of packaging industry, and relates to a biaxially stretched polyester film and a production method thereof, in particular to a biaxially stretched polyester film with a three-layer structure (ABC structure) capable of compounding and aluminizing and a production method thereof. (2) Background technology [0002] Polyethylene terephthalate film is widely used in aluminized composite printing. It can be applied to the packaging of beverage bottles, composite printing of various food outer bags, and is also widely used in foods with a long shelf life such as coffee. , milk and other outer packaging products, and widely used in the transfer of wine box packaging and anti-counterfeiting trademarks, it is a high value-added polyethylene terephthalate film product. [0003] At present, the production methods of composite and aluminized biaxially stretched polyester films mainly include coating and direct film drawing aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36B32B27/20B32B33/00B29D7/01B65D65/40
CPCY02W30/80
Inventor 黄飞刚邱达宏朱乃进寿祖康
Owner ZHEJIANG GREAT SOUTHEAST PACKAGING
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