Method for infiltrating water-proof material into zipper
Inactive Publication Date: 2006-05-18
YANG SHIH SHENG
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- Abstract
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Benefits of technology
[0007] The primary object of the invention is to provide a method for infiltrating a water-proof material into a zipper, such that after the impermeable material has solidified, it can infiltrate into the zipper tapes and form a water-proof layer with the zipper tape fabric to obtain a super water-proof effect. The secondary object of the invention is to provide a method for infiltrating a water-proof material into a zipper, which can efficiently shorten the manufacture process, since there is no need to cut the zipper to separate the zipper tapes. Accordingly, the manufacture cost can be reduced.
[0008] A further object of the invention is to provide a method for infiltrating a water-proof material into a zipper, which can efficiently lengthen the use life of the water-proof zipper.
[0013] By way of the above steps, a water-proof zipper, which has long use life, can be accomplished. Besides, the manufacture procedure can be shortened, and the manufacture cost can be reduced.
Problems solved by technology
Therefore, after application of the water-proof layer of to the surface of the zipper via adhesive or heat press, an additional process for cutting the water-proof layer to separate the tapes is required, rendering the manufacture process relatively complicated, the manufacture speed slower, and the manufacture cost higher.
As the water-proof layer for a conventional zipper can only adhered to the surface of the zipper tapes, it cannot firmly combine with the zipper tapes.
Therefore, after being used for a short period of time, the water-proof layer would easily detach from the zipper tapes due to friction, causing the water-proof effect apparently reduced.
Method used
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[0022] The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
[0023] Referring to FIGS. 1 to 3, the method for infiltrating a water-proof material into a zipper according to the present invention includes the steps of thickening, pouring and the applying the water-proof layer, and can lengthen the use life of the water-proof zipper, and relatively reduce the manufacture procedure and cost.
[0024]FIGS. 1 and 2 show a preferred embodiment of the invention, which includes a lower mold 10 and an upper mold 20. The lower mold 10 is provided with a positioning ...
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Abstract
A method for infiltrating a water-proof material into a zipper, includes the steps of combining an upper mold with a lower mold, filling a liquid polyurethane (PU) rubber into the mold cave of the upper mold, drawing the zipper through the underside of the mold cave such that the liquid PU rubber will infiltrate into the fabric of the zipper tapes, passing the zipper through a scrapper portion formed at the lower edge of the upper mold to remove surplus liquid PU rubber, and forming a laminate on the zipper tapes, so as to accomplish a water-proof zipper.
Description
BACKGROUND OF THE INVENTION [0001] (a) Technical Field of the Invention [0002] The present invention relates to a method for infiltrating a water-proof material into a zipper, such that a common zipper will become water-proof due to the infiltration of the impermeable rubber material into the zipper tapes. The present invention is applicable to processing water-proof zippers and water-proof fabrics or the like. [0003] (b) Description of the Prior Art [0004] In the method for manufacturing water-proof zippers of the prior art as disclosed in U.S. Pat. No. 6,105,214, a water-proof layer is attached to the surface of the zipper tapes via adhesive or heat press. The zipper is composed of a pair of opposed tapes, which are combined or separated by a moving zipper tab. Therefore, after application of the water-proof layer of to the surface of the zipper via adhesive or heat press, an additional process for cutting the water-proof layer to separate the tapes is required, rendering the manu...
Claims
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Login to View More IPC IPC(8): B21F45/18
CPCA44B19/32Y10T29/49982Y10T29/49782Y10T29/49885
InventorYANG, SHIH SHENG
OwnerYANG SHIH SHENG