Method for the manufacture of curved plastic pieces
OwnerHenk Dijkman, Sr., Henk Dijkman, Jr.inventors
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Abstract
In the method for the manufacture of curved plastic pieces, such as brassiere underwires, the plastic pieces are formed from hot plastic material in a selected mold and are cooled to solidify the plastic material. In the improved method, a continuous thermoplastic wire in its thermoplastically formable state is coiled into a coil and simultaneously cooled thus forming turns of a solidified coil. The turns are subsequently cut along the axis of the coil over the entire length of the coil to produce the curved plastic pieces.
Claims8
A method for the manufacture of curved plastic pieces, in which said plastic pieces are formed from hot plastic material in a selected mold and are cooled to solidify said plastic material;
- said method further comprising the steps of:
- coating two continuous thermoplastic wire cores with a plastic coating to form a continuous thermoplastic wire;
- continuously coiling said continuous thermoplastic wire in its thermoplastically formable state into a coil and simultaneously cooling said thermoplastic wire thus forming turns of solidified coil;
- and
- subsequently cutting said turns at two locations that are 180.degree. spaced from one another parallel to an axis of said coil along the entire length of said coil to produce single ones of said curved plastic pieces.
Dependencies are inferred from the claim text.