Inventors:
Jeffrey L. Swartz - Brighton MA
Assignee:
Microseal Plastics Corporation - Chestnut Hill MA
International Classification:
B29C 2500, B32B 3124
Abstract:
A linear seal joining a plurality of polybutylene sheets is produced by (1) clamping the sheets between a pair of heat conducting members with free edges of the sheets protruding to form a relaxed skirt, (2) concentrating fusing heat on the skirt to form a tacky weld joining the free edges, and (3) subjecting the weld to an aqueous surfactant fluid by which unwanted tackiness of the weld is eliminated. Apparatus is disclosed for performing the foregoing process. A polybutylene product of the foregoing process is disclosed.