FOOD PACKAGING FILM, FOOD STRETCH FILM, FOOD SMALL WINDING WRAP FILM, AND MANUFACTURING METHOD OF FOOD PACKAGING FILM

摘要

PROBLEM TO BE SOLVED: To provide a food packaging film capable of reducing generation of film torn-off pieces due to cutting of a film, and easily detecting film torn-off pieces contaminated into foods.;SOLUTION: A food packaging film contains a resin composition having no crystal melting peak temperature during temperature rise at temperature rise rate of 10°C/min. measured by a differential scanning calorimeter according to JIS K7121 at 180°C or higher and thickness of 5 μm to 30 μm, a maximum absorption wavelength at 380 nm to 750 nm of 600 nm to 750 nm, and satisfying following (1) to following (3). (1) all light ray transmittance is 70% or more. (2) absorbance at maximum absorption wavelength is 3 times or more of absorbance at 470 nm. (3) absorbance at maximum absorbance wavelength after extending 100% at speed of 200 mm/min. is 2.5 times or more of absorbance at 470 nm.;SELECTED DRAWING: None;COPYRIGHT: (C)2019,JPO&INPIT