VERFAHREN UND VORRICHTUNG ZUM FORMEN VON GESCHWAECHTEN BEREICHEN IN BEHAELTERZUSCHNITTEN.
摘要
A method and a device for selective weakening of limited areas of a material intended for the production of containers for liquids, especially beverages, with a material for the containers that is built up of a number of layers (l-5) at least one of which is a metal film layer (4). A hole (11) defined as to dimensions and depth is melted from the outside by the aid of a laser beam (7) hitting said layers (l-5) with such an intensity and during such a period of time that only the desired thickness of layers (l-3) is melted through.
申请公布号
DE3762390(D1)
申请公布日期
1990.05.31
申请号
DE19873762390
申请日期
1987.02.11
申请人
ELOPAK A/S, SPIKKESTAD, NO
发明人
DYRE-HANSEN, HANS, N-3430 ROYKEN, NO;THORSTENSEN, BERNT, N-0687 OSLO 6, NO