| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection nozzle using a relatively easy method for reducing both a problem with stringing and a problem with silver streaking. SOLUTION: The injection nozzle comprises a nozzle body 8 having a resin passage inside, a release port 11 at the front end for a resin passing through the resin passage to be released to the outside, and a mounted port 12 at the rear end to be mounted on an injection cylinder 4, and a pressure difference generating means 9 as a member detachably attached into a nozzle body 8 for parting the resin passage in two, namely, into a front side space and a rear side space, and having an abutting peripheral face for abutting on the inner wall of the resin passage, a plurality of communication grooves provided in the abutting peripheral face for communicating the front side space with the rear side space, and a first guide part in an approximately conical shape arranged in the rear side space so that its front end is directed to the side of a flange 7 with its bottom face on the side of the abutting peripheral face. COPYRIGHT: (C)2009,JPO&INPIT
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