VARIABLE THICKNESS FOAM PLANK

摘要

Successive predetermined lengths of feed webs (5) are moved and held in position, overlying one another on fixed platen (11) of the forming table. Compression platen (12) is then lowered over feed webs (5). Compression platen (12) compresses the thermoplastic foam feed webs (5), while hot pin platen (13) is lowered toward the feed webs. Compression platen (12) (and preferably fixed platen (11) also) is equipped with holes to allow hot pins (14) to penetrate through feed webs (5). As hot pin platen (13) is lowered, hot pins (14) penetrate the thermoplastic foam webs (5), melting holes through the thermoplastic foam webs. The melted material lines the holes thus produced and bonds feed webs (5) together into a continuous foam plank (10).