EP0161189A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Hot runner mold for three-layer molding
Assignee: Nissei ASB Machine Co Ltd
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Filing: 1985-05-07
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Granted: —
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Expires: 2005-05-07
Abstract
Abstract A hot runner mold in which a nozzle tube (5) and a nozzle cap (6) are used to constitute two resin passages (A,B) and a hot runner nozzle having a double construction so that Injection and filling of two kinds of different resins may be performed positively even in the case where a number of synthetic resin molded articles of a three-layer construction comprising an inner layer, an outer layer and an intermediate layer are obtained by the use of a hot runner mold.
Inventors
- 👤 Yoshinori Nissei Asb Machine Co. Ltd. Nakamura
- 👤 Kazumi Nissei Asb Machine Co. Ltd. Machida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 18:16
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/20; B29C45/22; B29C45/16; B29C45/1642; B29C45/1646; B29C45/1603; B29C45/26; B29C49/00; B29C49/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
241 words
(1) A hot runner mold for three-layer molding used for the injection molding of a synthetic resin molded article having a three-layer construction, comprising: (A) a hot runner block (1) interiorly comprising two parallel hot runners ( 2 , 3 )and a plurality of holes (4) at right angles and crossing with each of the hot runners, said hot runner block being provided at the side therof with a gate (2a, 3 a) connected to each of said hot runners ; ( B ) a nozzle tube (5) comprising a nozzle member (5a)at the end portion thereof, having a tube diameter(5b), except a base end portion(5c), formed to have a smaller diameter then that of said hole and having an opening(5d) at the base end portion thereof to be connected to one (3) of said hot runners ; (C) a first resin passage (A) formed between a hole wall and a tube (5) by said nozzle tube inserted into and secured to said hole and being communicated with the other hot runner (2) ; (D) a second resin passage (B) within the nozzle tube formed by a connection between an opening of the base end portion of said nozzle tube (5)and one hot runner (3) ; and (E) a nozzle cap (6) screwed into an open edge of said hole to cover said nozzle member projected from the hpt runner block to form a hot runner nozzle having a double construction.
Claim 2
Dependent Claim
36 words
(2) The hot runner mold according to Claim 1, wherein said nozzle tube (5) is detachably fixed with the base end portion (5c) forced into a peripheral wall of a bottom of the hole (4) .
Claim 3
Dependent Claim
35 words
(3) The hot runner mold according to Claim 1, wherein said nozzle tube (5) is detachably fixed with the base end portion (5e) screwed into the peripheral wall of the bottom of the hole (4).
References Cited (Backward Citations)
No citation records indexed.
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