B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/685
B29D 23/00 (2006.01) B29C 45/14 (2006.01)
Patent
CA 1169616
ABSTRACT OF THE DISCLOSURE For the production of a length of flexible tubing, in which a reinforcing insert is embedded and whose toothed- belt-like inner side is covered by a fabric cover, a moulding tool is provided. The moulding tool comprises a mould core, having axial teeth and tooth notches, and a mould sleeve. The mould core, on which a sleeve-like fabric cover is placed first and the reinforcing insert is then wound on, forms with the mould sleeve an annular cylindrical mould cavity, into which the plastic material enters from one end axially into the mould cavity. On one face end the mould core has a mould core portion which projects axially beyond the ends of the teeth and forms a holding surface, whose diameter is constricted to the diameter of the tooth notches. The edge of the fabric cover which projects axially beyond the teeth is tightly bound and secured sealingly on the holding surface of the mould core portion. At the end of the mould cavity on which the mould core portion containing the secured fabric cover edge rests the plastic material is axially introduced into the mould cavity.
380353
Breco Kunststoffverarbeitungs - G.m.b.h. & Co. Kg
Marks & Clerk
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