/Fluorine Resin Material, Laminate, Tube, And Tube Manufacturing Method
Abstract

A laminate including a fluororesin layer containing a fluororesin material, a polyamide resin layer containing a polyamide resin, and an ethylene/vinyl alcohol copolymer (EVOH) layer containing an EVOH resin in this order, where the fluororesin layer and the polyamide resin layer are directly adhered, the polyamide resin layer and the EVOH layer are directly adhered, the fluororesin material contains a fluororesin, the fluororesin has a carbonyl group, a total number of carbonyl groups being 1 or more and less than 800 per 106 main-chain carbon atoms, and the fluororesin contains ethylene unit and tetrafluoroethylene unit, and where the fluororesin material has a critical shear rate at 280° C. within a range of 50 to 500 sec−1.

Full Text

What is claimed is:

A laminate including a fluororesin layer containing a fluororesin material, a polyamide resin layer containing a polyamide resin, and an ethylene/vinyl alcohol copolymer (EVOH) layer containing an EVOH resin in this order, where the fluororesin layer and the polyamide resin layer are directly adhered, the polyamide resin layer and the EVOH layer are directly adhered, the fluororesin material contains a fluororesin, the fluororesin has a carbonyl group, a total number of carbonyl groups being 1 or more and less than 800 per 106 main-chain carbon atoms, and the fluororesin contains ethylene unit and tetrafluoroethylene unit, and where the fluororesin material has a critical shear rate at 280° C. within a range of 50 to 500 sec−1.
Timeline
Filed
04/10/2026
Published
08/13/2026
Granted
Not Available
IPC Codes(8)
C08L 27/18:Homopolymers or copolymers of tetrafluoroethene
B32B 1/08:Tubular products
B32B 27/08:of synthetic resin of a different kind