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Preparation method of single-sided matte PVC heat-shrinkable label film by blown film method

A film blowing method and heat shrinking technology, which is applied to labels, chemical instruments and methods, flat products, etc., can solve the problems of reducing the yield of labels, label printing patterns and color design restrictions, etc., and achieve the effect of increasing matte characteristics

Active Publication Date: 2021-08-24
YIXING GUANGHUI PACKAGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only reduces the yield of labels, but also imposes certain restrictions on label printing patterns and color designs.

Method used

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  • Preparation method of single-sided matte PVC heat-shrinkable label film by blown film method
  • Preparation method of single-sided matte PVC heat-shrinkable label film by blown film method
  • Preparation method of single-sided matte PVC heat-shrinkable label film by blown film method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0059] 1. Core layer foaming three-layer co-extrusion PVC heat shrinkable label film formula

[0060]

[0061]

[0062] 2. Film properties of Examples 1-3

[0063]

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Abstract

The preparation method of the blown film method single-sided matte PVC heat shrinkable label film proposed by the present invention, through different formula design and double-layer co-extrusion blown film molding technology, firstly prepare a kind of inner layer is light film layer, outer layer is matte layered one-bubble coextruded film. Secondly, in the two-bubble blowing cooling setting process to obtain the shrinkage rate of the film, the outer surface of the film is slightly damaged during the secondary forming process by using a partially pockmarked cooling setting sleeve, so that the matte layer of the film (outer layer) ) surface becomes rougher, further increasing the matte characteristics of the second bubble and the final film product. Thereby, a double-layer co-extruded single-layer matte PVC heat-shrinkable label film in which the outer layer is a matte layer and the inner layer is a glossy film layer is obtained.

Description

technical field [0001] The invention belongs to the technical field of plastic film processing, and in particular relates to a method for preparing a single-sided matte PVC heat-shrinkable label film by a film blowing method. Background technique [0002] Heat-shrinkable label film is the base material film for sleeve labels such as PET bottled beverages. Currently, the materials used to prepare the film mainly include PVC, PET, PS, etc. Although the PVC material contains chlorine in its own structure, the synthetic monomer is a toxic substance, and there is a series of environmental protection and safety problems such as the risk of dioxins during incomplete combustion. However, due to the material's high cost performance, excellent mechanical properties and thermal shrinkage properties, the label does not directly contact the objective reality of drinks. Therefore, PVC material is still one of the main materials of heat shrinkable label film today, accounting for about 40...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C55/28B29C35/16C08L27/06C08L51/04C08K5/12C08K5/57B32B27/06B32B27/20B32B27/30B32B33/00C08J5/18B29K105/02B29L7/00
CPCB29C35/16B29C55/28B29C2035/1616B29K2105/02B29L2007/00B32B27/08B32B27/20B32B27/304B32B33/00B32B2250/02B32B2250/242B32B2307/408B32B2307/736B32B2519/00C08J5/18C08J2327/06C08J2451/04C08K5/12C08K5/57
Inventor 杨涛陈亚龙范琪肖田
Owner YIXING GUANGHUI PACKAGE