Copolymer polyester resin and molded product using same

A polyester resin and copolymer technology, applied in the field of copolymer polyester resin, can solve the problems of reducing shrinkage stress, poor low-temperature shrinkage, etc., and achieve the effects of reducing shrinkage stress, high shrinkage rate, and reducing molding defects
CN102227461AActive Publication Date: 2011-10-26SK CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SK CHEM CO LTD
Publication Date
2011-10-26

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Abstract

The present invention relates to a copolymer polyester resin and a molded product using the same and more specifically to a copolymer polyester resin that contains 10-80 mol% of 1,4-cyclohexane dimethanol, 0.1-50 mol% of a diol compound expressed as HO-R6CR7-R4R1R5-COHR2R3 (where R1 is an alkyl group with a carbon number of 0-10,and R2-R7 are hydrogens or alkyl groups with a carbon number of 1-10), and ethylene glycol as the remainder so that the sum of the entire diol composition is 100 mol% relative to aromatic dicarboxylic acid. The copolymer polyester resin of the present invention enables reduction of cycle time and improvement of product moldability and prevention of PET bottle deformation during mold processing with a heat-shrinking label by complementing low temperature shrinkage, maintaining a high shrinkage rate, and reducing shrinkage stress.
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Description

technical field

[0001] The present invention relates to a copolymer polyester resin and molded products using the copolymer polyester resin. Cycle time and improved molding properties of products, thus being very suitable for labels, the present invention also relates to molded products using said copolymer polyester resin. Background technique

[0002] Heat-shrinkable plastic products have the property of shrinking by heat, and are very widely used in films such as shrink wraps, shrink labels, and the like. Specifically, plastic films based on polyvinyl chloride (PVC), polystyrene and polyester are used for labeling or capping various containers, or directly for packaging.

[0003] However, a film made of PVC may generate hydrogen chloride gas and dioxin-generating materials when incinerated, and thus is restricted in terms of environmental protection. If this product is used as a shrink label for PET containers, the container can only be recycled after the label has been...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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