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10-18-2017

Method for Manufacturing Watertight Zipper

METHOD FOR MANUFACTURING WATERTIGHT ZIPPER (© European Patent Office)

The present disclosure provides a method for manufacturing a watertight zipper for solving the problem of production difficulties. A method for manufacturing a watertight zipper according to the present disclosure includes: forming a waterproof tape by extruding a polymeric material in melted state wrapping around an outer surface of a cloth tape (1), with the waterproof tape including a thick waterproof layer (2a) and a thin waterproof layer (2b) both formed by the polymeric material in solidified state, cutting a side of the waterproof tape that is covered by the thick waterproof layer (2a) to form a side surface of the thick waterproof layer (2a) in a plane form as an abutting surface (21), forming a plurality of apertures (3) at the waterproof tape, wherein each of the plurality of apertures (3) extends through the cloth tape (1) and the thick waterproof layer (2a), and forming a plurality of scoops (4) corresponding to the plurality of apertures (3) by injection molding. The thick waterproof layer (2a) covers a side surface, an upper surface and a lower surface of the cloth tape (1). The thin waterproof layer (2b) connects with the thick waterproof layer (2a). Each of the plurality of scoops (4) spaces from the thin waterproof layer (2b). An end of each of the plurality of scoops (4) extends beyond the abutting (21) surface of the thick waterproof layer (2a).

Document: EP3231312A1
Click here for the full patent text at DEPATISnet [PDF]
Published patent application
Disclosure date: 02-01-2017
Publication date: 10-18-2017
Applicant: UINTECH ZIPPER & MACHINERY CO LTD, TW
Inventor: CHENG JUNG-YUAN, TW


© European Patent Office. This information was obtained from the espacenet of the European Patent Office. There is no guarantee of its correctness or curency. For additional information, please use the research at espacenet. It is possible to determine the current legal and procedural status of patents and utility patents/models at http://worldwide.espacenet.com/ kfree of charge.

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