Wärmeschrumpfbare Polyesterfolie

Details

Veröffentlichungs-Nr.

EP4741448

Anmeldetag

27. Juni 2024

Veröffentlichung

9. Januar 2025

Rechtsraum

EP

Abstract

The present invention addresses the problem of providing a heat-shrinkable polyester film having improved shrinkage finish properties without limiting the raw material composition. The present invention is a heat-shrinkable polyester film characterized by containing ethylene terephthalate as a main constituent component and satisfying items (1)-(4) below:(1) A skirt ratio of 1-8% when the film is measured after being fixed in a state of being shrunk by 10% in a main shrinkage direction in 90°C hot air and heat-treated for one minute.(2) A maximum heat shrinkage stress in the main shrinkage direction of 1-10 MPa when the film is fixed in a state of being shrunk by 10% in the main shrinkage direction in 90°C hot air and is measured while being heat-treated for one minute.(3) A shrinkage rate of 20-72% in the main shrinkage direction when the film is immersed in 80°C hot water for 10 seconds.(4) The average refractive index of the film is 1.57-1.585.

Anmelder

Firma

Toyobo Co., Ltd.

Land

🇯🇵 Japan