公开(公告)号：US3785899A

公开(公告)日：1974-01-15

申请号：US3785899D

申请日：1971-06-08

Applicant: SEALED AIR CORP

Inventor： FIELDING A

IPC: B32B3/26 ,  B29C43/30 ,  B29C51/22 ,  B29C55/00 ,  B29C65/00 ,  B29C65/52 ,  B29C65/78 ,  B31F1/07 ,  C09J5/00 ,  C09J5/06 ,  B32B31/16

CPC classification number: B32B7/14 ,  B29C43/305 ,  B29C51/225 ,  B31F1/07 ,  B31F2201/0753 ,  B31F2201/0756 ,  B31F2201/0761 ,  B31F2201/0776 ,  B31F2201/0782 ,  B31F2201/0784 ,  B31F2201/0787 ,  B32B3/28 ,  Y10T156/1023 ,  Y10T156/1737

Abstract: Method and apparatus for the manufacture of a cellular material which utilizes an embossing roller to emboss at least one film after being preheated to an embossing temperature. At least the embossed sheet preferably includes a coating of adhesive which is reactivated during the preheating procedure so that upon applying a second unheated film to the embossed film the individual embossments will be sealed. The preheating means is arranged so that it can be moved out of its normal operating position in order to enable termination of the embossing and sealing process, and means are utilized to rapidly interchange the embossing rollers to minimize the down time for the apparatus.