Accession Number : ADD000840
Title : Process for Shipping Flexible Polyurethane Foam.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C
Personal Author(s) : Goldfein,Solomon
Report Date : 15 Jun 1965
Pagination or Media Count : 2
Abstract : This invention relates to the shipping of flexible polyurethane foam when the space involved is limited. It concerns the reduction of the required space for transporting flexible polyurethane foam by compressing it and increasing its density. As polyurethane foam is cellular it can be compressed in its flexible form without damage to its cells. One of the objects of this invention is to provide a method for compressing flexible polyurethane foam for shipment and then re-expanding it when it reaches its destination. The invention comprises the steps of impregnating flexible polyurethane foam with an adhesive solution removing the solvent by evaporation with heat, compressing the foam to a fraction of its original volume, and removing the same from the press. When the foam is removed from the press it is held in its compressed state by the adhesive, and the foam can be shipped to its destination in this compressed state. When it is desired to re-expand the foam, it is immersed in a solvent for the adhesive which allows the sample to expand to its original volume.
Descriptors : *Polyurethane resins, *Expanded plastics, *Patents, Shipping, Compression, Adhesives
Subject Categories : Plastics
Distribution Statement : APPROVED FOR PUBLIC RELEASE