To provide a method of IR welding method showning good welding results even in cases involving thick polyolefin resins (PE, PP) and polyfluorohydrocarbon resins.
The method comprises polymerizing two or more thermoplastic resin members 3 onto a support 1, polymerizing an IR transmissive solid 5 to form a polymerization aggregate and irradiating the polymerization aggregate with a CO-source IR beam 11 from the side of the IR transmissive solid 5. Because a boundary temperature of the thermoplastic resin member in contact with the IR transmissive solid decreases relatively, an area of a higher temperature can be generated within the aggregate by utilizing the penetrated IR energy. A deterioration in surface property due to thermal damage in the IR-beam-irradiated surface can be thereby controlled, enabling formation of a heated/cooled welded layer in a short time.
SATO KIMITOSHI
SHIMIZU NAOKI
| JP2003504233A | 2003-02-04 |
| WO2003039843A1 | 2003-05-15 |