HEAT SEALING AND PACKAGING

WRAPPING Heat sealing of wrapper laminates made of foam supported by a porous substrate sheet is improved by coating on the foam-engaging face of the substrate a barrier layer such as polyvinylalcohol to keep the heated foam from bleeding through the substrate. The support for the foam can be non-po...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	RASZEWSKI, LEWIS R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS PACKING PERFORMING OPERATIONS STORING TRANSPORTING UNPACKING
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