Heat shrinkable film, method for manufacturing a heat shrinkable film, and method for determining the heat shrinkage rate of a heat shrinkable film.

The heat-shrinkable film with a predetermined section and controlled shrinkage rate using motion capture addresses uneven shrinkage issues, ensuring uniformity and preventing wrinkles on non-uniform objects.

JP7883683B2Active Publication Date: 2026-07-01C I TAKIRON CORP +1

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
C I TAKIRON CORP
Filing Date
2026-03-02
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

Existing heat-shrinkable films suffer from uneven heat distribution and large variations in heat shrinkage rates, leading to wrinkles and non-uniformity, particularly when applied to non-uniform objects like PET bottles with complex shapes.

Method used

A heat-shrinkable film with a predetermined section along the primary shrinkage direction, where the maximum heat shrinkage rate is adjusted to 3 mm/second or more within a specific time frame, using motion capture to accurately measure and control the heat shrinkage rate, ensuring uniformity and preventing wrinkles.

Benefits of technology

The solution allows for precise adjustment of heat shrinkage characteristics, effectively preventing wrinkles and ensuring uniform heat shrinkage across non-uniform objects by accurately measuring and controlling the heat shrinkage rate.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The present invention provides a heat-shrinkable film that can adjust the heat shrinkage rate within a predetermined range, thereby exhibiting stable and excellent heat shrinkage properties and effectively preventing wrinkles and other defects. [Solution] A heat-shrinkable film having the longitudinal or widthwise direction as the main shrinkage direction, made of a predetermined resin, and in a predetermined time t1 to t3, t2
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