PROCEDE POUR FAIRE DURCIR DES RESINES REACTIVES DANS UN CHAMP DE HAUTE FREQUENCE

• Main Author: PETER BAUR, GERHARD LIEBING ET WALTER WURTH
• Format: Patent
• Language: French
• Published: 21.11.1980
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A.PROCEDE POUR OBTENIR LE DURCISSEMENT DE RESINES REACTIVES TELLES QUE DES ADHESIFS REACTIFS OU DES RESINES COULABLES.B.CE PROCEDE SE CARACTERISE EN CE QUE L'ON PROVOQUE LE DURCISSEMENT PAR CHAUFFAGE CAPACITIF DANS UN CHAMP DE HAUTE FREQUENCE DE 10 A 5.10MHZ.C.APPLICATION AU COLLAGE DES PIECES DE PHARES OU DE PROJECTEURS. Resins e.g. epoxy resins used as adhesives and casting resins are hardened by capacitive heating in a high frequency field such as is produced by, for example, a HF preheater or a microwave apparatus. The process is particularly advantageous in the glueing of headlamp parts, particularly for the glueing of diffusing lenses and reflectors for motor vehicle headlamps, thus avoiding excessive heating and thus possible distortion of the optically effective reflector.