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High-brightness polyester film and preparation method

A polyester film, high-brightness technology, applied in chemical instruments and methods, flat products, applications, etc., can solve the problem of poor winding and slitting properties of polyester film, low gloss and light transmittance, Low haze and other issues, to achieve the best opening and optical properties, high gloss, low haze effect

Active Publication Date: 2013-01-16
ZHEJIANG QIANGMENG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the shortcomings of polyester film in the prior art, such as poor winding and slitting performance, low gloss, light transmittance, high brightness, high haze, etc., and provides an organic Polymer PET material is used as an anti-linking additive and a special production process is used to change the structure of BOPET polyester film, the total crystallization rate of the production process and the crystallinity of the final product, so that the polyester molecular structure changes to achieve high gloss, A high-brightness polyester film with high light transmittance, low haze, and high brightness effects, and excellent opening and optical properties, and its preparation method

Method used

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  • High-brightness polyester film and preparation method
  • High-brightness polyester film and preparation method

Examples

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Embodiment 1

[0025] A high-brightness polyester film, including ABC three-layer structure, the B layer is the middle core layer, the material is a super bright polyester chip; A layer is the upper surface high-brightness layer, the material includes organic polymer anti-blocking polymer Ester chips and super-bright polyester chips; layer C is the lower surface high-brightness layer, and the materials include organic polymer anti-blocking polyester chips and super-bright polyester chips.

[0026] Layer A and C are the upper and lower surface high-brightness layers, and the materials have the following components in mass percentage: 5-10% organic polymer anti-blocking polyester chips and 90%-95% super-bright polyester chips. Super-bright polyester chips have zero titanium dioxide (TiO2) content. The thickness of layer B accounts for 60% to 80%, the thickness of layer A accounts for 10% to 20%, and the thickness of layer C accounts for 10% to 20%.

[0027] In the high-brightness layer under ...

Embodiment 2

[0037] A preparation method of high-brightness polyester film, composed of components by weight percentage:

[0038]The ratio of the raw materials of the auxiliary twin-screw extruder (A layer) is 90% super glossy polyester chips and 10% anti-blocking agent organic polymer polyester chips by mass percentage, and the raw materials are sent into extrusion after accurate metering and mixing machine extrusion; the raw material ratio of the main extruder (B layer) is 100% super glossy polyester chips by mass percentage, and the raw materials are sent to the main extruder for extrusion after accurate measurement; the auxiliary twin-screw extruder ( Layer C) The raw material ratio is 90% super glossy polyester chips and 10% anti-blocking agent organic polymer polyester chips by mass percentage. The raw materials are sent to the extruder for extrusion after being accurately metered and mixed. The mass ratio of materials extruded by the main extruder and two auxiliary twin-screw extrud...

Embodiment 3

[0041] The difference between this embodiment and embodiment 2 is that the mass ratio of the material extruded by the main extruder and the two auxiliary twin-screw extruders is 15:70:15, and the thickness of the high-brightness anti-adhesion layer of the 23um film A layer is 3.45um , C layer high brightness anti-adhesion layer thickness is 3.45um.

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Abstract

The invention relates to the special packaging film manufacturing technology and discloses a high-brightness polyester film and a preparation method. The high-brightness polyester film comprises a layer A, a layer B and a layer C, wherein the layer B is a middle core layer and made of a ultra-glazed polyester slice, the layer A is an upper surface high-brightness layer and made of an organic macromolecular anti-blocking polyester slide and an ultra-glazed polyester slice, and the layer C is a lower surface high-brightness layer and made of an organic macromolecular anti-blocking polyester slice and an ultra-glazed polyester slice. By selecting modified synthesized organic macromolecular materials as anti-blocking additives and changing the structure of BOPET (biaxially-oriented polyethylene terephthalate) polyester film and general crystal speed and crystallinity degree by special production process, the polyester molecular structure is changed, effects of high luster, high light permeability, low haze and high brightness are realized, and opening property and optical performance are excellent.

Description

technical field [0001] The invention relates to a special packaging film manufacturing technology, which relates to a high-brightness polyester film and a preparation method. Background technique [0002] With the development of the economy and the improvement of people's living standards, commodity packaging is increasingly developing in the direction of environmental protection, safety, high-grade, and aesthetics. BOPET polyester film is a world-recognized green and environmentally friendly packaging material. The film has the characteristics of high strength, good rigidity, transparency, and high gloss; it is odorless, tasteless, colorless, non-toxic, and has outstanding strength and toughness; it has good antistatic properties. , easy to carry out vacuum aluminum plating, coatability, thereby improving optical properties, barrier properties and printing adhesion; BOPET polyester film also has good heat resistance, excellent optics, low temperature freezing resistance, go...

Claims

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Application Information

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IPC IPC(8): B32B27/36B29C69/00B29C47/06B29C53/12B29L7/00
Inventor 易志龙彭齐飞邱亚竞袁慎朋
Owner ZHEJIANG QIANGMENG IND
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