Dual-density cling foam spacer

摘要

A dual-density or dual property foam sandwich with plastic foam on one side having strong tendencies to "cling" to glass or other smooth surfaces and with plastic foam on the other side having a substantially-reduced tendency to cling or bond to glass. Spacers manufactured in accordance with this invention may be produced in a single, integrated process that does not require any adhesive, other chemical bonding agents or intermediates, mechanical adhesions, or laminations.