PURPOSE: To make a film possible to be reclaimed and to improve the explosion- proof stability, etc. in a coating step, by laminating, on a polyester film that has been prepared by polymerization using a specified catalyst, a coating agent that contains inorganic particles and a specified polyester copolymer dispersed together with a water-soluble organic compound in water.
CONSTITUTION: Using as a main catalyst germanium, and a mold that is substantially free from any external lubricant and is cooled by a refrigerant having a temperature of 10±1°C, injection molding effected, and a polyester having a thickness of 4mm and a haze not less than 20% is melt and extruded into an unstretched film. Onto at least one on the surfaces of the film is applied a dispersion containing a water-insoluble polyester copolymer (A) the secondary transition point of the specific constituent of which is 50°C or more, a water- soluble organic compound (B) having a boiling point of 60W200°C, water (C) and inorganic particles (D) in a ratio of A/B=100/20W500, B/C=100/50W1,000, and A/D=10,000/5W300. This coated film is at least once stretched monoaxially to obtain a transparent and lubricative film.
| JP2023063089 | RESIN SHEET |
| JP2010181870 | POLYESTER FILM FOR POLARIZING FILM PROTECTION |
| WO/2001/049770 | BIODEGRADABLE PLASTIC FOOD SERVICE ITEMS |
NAGANO HIKOICHI
SUZUKI HAJIME
MAKIMURA OSAMU
| JPS491160A | 1974-01-08 | |||
| JPS4719419A | ||||
| JPS5443017A | 1979-04-05 | |||
| JPS581727A | 1983-01-07 |