Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Heat-shrinkable polyester film

A polyester film, heat shrinking technology, used in polyester coatings, heat-sensitive coatings, thin material processing, etc., can solve non-uniform heat shrinkage, damage the appearance and quality of marked containers, and cannot effectively protect containers or mark goods, etc. problems, to achieve the effect of improving shrinkage ability, maintaining appearance quality, and good appearance quality

Active Publication Date: 2011-09-21
AISIKAMEVO CO LTD
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this heat-shrinkable polyester film shows a skirt phenomenon (skirt phenomenon), that is, a film having a fixed point marked on a container such as a square container shrinks up the center between the fixed points in a direction perpendicular to the shrinking direction ( riding up), or the shrinking phenomenon, that is, the film marked on the circular container shrinks all along the direction perpendicular to the shrinking direction. Therefore, these traditional films cannot be effectively used to protect the container or mark the product.
[0007] In addition, conventional polyester films are also known to have disadvantages such as non-uniform thermal shrinkage and shrinkage during high-temperature shrinkage, which spoils the appearance and quality of marked containers

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat-shrinkable polyester film
  • Heat-shrinkable polyester film
  • Heat-shrinkable polyester film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] 1. Preparation of copolyester resin and polyester film

[0038] Copolyester resins were prepared according to the compositions and contents in Table 1 by using conventionally used and well-known copolyester standard preparation methods (for example, Examples 1-7 of Korean Patent No. 10-0987065).

[0039] Table 1

[0040]

[0041] The polyester films prepared with Resins 11-14 are shown in Table 2. Each resin was melt-extruded to form a sheet, and an oriented film was prepared at a rate of 4.0 in the main shrinkage direction at 80°C. Fix the two ends of the oriented film along the main shrinking direction, and then quickly pass through a heat treatment zone with a temperature range of 85° C. to 105° C. to heat-set the fixed film to obtain a heat-shrinkable polyester film with a thickness of 40 μm.

[0042] Table 2

[0043]

[0044]

[0045] 2. Properties of polyester film

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
Login to View More

PUM

PropertyMeasurementUnit
heat shrinkage ratioaaaaaaaaaa
heat shrinkage ratioaaaaaaaaaa
heat shrinkage ratioaaaaaaaaaa
Login to View More

Abstract

A heat-shrinkable polyester film having a heat-shrinkage change per degree Celsius (% / DEG C.) along the main shrinkage direction of 1.5 to 3.0 in the range of 60 DEG C. to 70 DEG C., 2.5 to 3.5 in the range of 70 DEG C. to 80 DEG C., 1.0 to 2.0 in the range of 80 DEG C. to 90 DEG C., and 0.1 to 1.0 in the range of 90 DEG C. to 100 DEG C., has a good appearance quality after shrinkage and thus suitable for a wrapping material, particularly a label for a bottle.

Description

technical field [0001] The present invention relates to a heat-shrinkable polyester film suitable for use as a packaging material, more preferably for marking containers, due to its good finished appearance after shrinking. Background technique [0002] Heat-shrinkable film, which can shrink back to its pre-stretched form when heated at a predetermined temperature, is suitable for printing various items to attract consumers' attention due to its properties, and is suitable for full packaging of various containers as well as packaging a bundle Commodity, so it has been widely used to mark glass or plastic bottles. [0003] Recently, heat-shrinkable films made of soft polyvinyl chloride (PVC), which have limited maximum heat shrinkage and emit toxic pollutants such as dioxins when burned, have become unpopular. Oriented polystyrene (OPS) films, on the other hand, have uniform shrinkage properties and low specific gravity, and are easy to remove and recycle from PET bottles, b...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/02C08G63/672B29C55/02B65D65/38B29C48/08
CPCB29C55/04B29C47/00C09F3/00B29C47/0021C08G63/183B29C47/0057C09D167/00B29C61/003B29C55/00B29K2067/00B29K2105/02B29C63/38C08J5/18C08J2367/02C09D5/26B29C48/08B29C48/0018Y10T428/1328Y10T428/1331Y10T428/31786B29K2995/0049
Inventor 金成度吴泰炳郑泰亨
Owner AISIKAMEVO CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com