Injection mold for thermal elastomer and water-impermeable zipper, which is made with the same, as well as a finished product with the water-impermeable zipper

摘要

An injection mold for thermoplastic elastomer (1) comprising: a mold base (11) formed with a zipper mounting platform (12) and having a top surface with a curved surface (13), the curved surface (13) comprising a pair of neck straps (31) a zipper (3) supported and formed with a transversely elongated curved back (14) on this; two end pieces of the bent back (14) are formed with a front end piece (141) and with a rear end piece (142); the front end piece (141) has a wedge-shaped tip which can be inserted into a gap (313) between the pair of wearing straps (31) to transversely displace the gap (313) with the curved spine (14) while a surface of the bent back (14) longitudinally having a thermoplastic elastomer injection port (15) connected to at least one extruder (2); anda thermoplastic elastomer (21) extruded from at least one extruder (2) and flowing through the thermoplastic elastomer injection port (15) to penetrate into the gap (313) and into the slots (321) in the two rows of coupling members (3). 32) formed in the inner edges of the pair of wearing straps (31) to be injected, the zipper (3) being formed after cutting the thermoplastic elastomer (21) in the gap (313) having a water-impermeable structure.