B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/758, 18/939
B29C 49/00 (2006.01) A01G 25/02 (2006.01) B29C 65/00 (2006.01)
Patent
CA 1168012
ABSTRACT OF THE DISCLOSURE The present invention provides a method for the con- tinuous manufacture of a flat-shaped hollow body, equipped with fluid transport ducts, which have fluid entry ports and fluid exit ports, using a forming die consisting of continuously-moving mould segment halves, moving along a forming line which, upon entering the forming line, are moved through the forming line in close contact with each other in the operating direction and with the forming die closed on pairs of mold segment halves, wherein a warm thermoplastic hose stock is introduced into the forming die and formed there under vacuum, wherein said hose stock has a relatively large wall thickness, and wherein the hose stock, in at least a portion of its cross section, is subjected to vacuum action before the pairs of mold segment halves are brought together and then pressed together thereby forming voids and welds over at least a portion of its cross section. The present invention also provides apparatus for continuously forming a flat-shaped hollow body, comprising a forming die con- sisting of movable and continuous guided mold segment halves, which upon entering a forming line, are guidable into close facing proximity to each other and move in an operating direction, wherein the two paired mold segment halves have mold recesses which correspond with the desired profile of the hollow body and wherein the mold segment halves are equipped with at least one vacuum bore which leads in one direction to their underside and in another direction to the mold recess on their other side and which can be aligned with at least one vacuum channel in a machine table which holds the forming die in place, and wherein at least one vacuum bore is formed in such a manner as to permit at least one vacuum channel to be aligned with this vacuum port before the mold closes.
357342
Hegler Ralph-Peter
Hegler Wilhelm
Hegler Wilhelm
Marks & Clerk
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