Title:
【発明の名称】環状重合物製造方法、及び該方法を実施する型
Document Type and Number:
Japanese Patent JPS63502417
Kind Code:
A
Abstract:
PCT No. PCT/SU86/00018 Sec. 371 Date Oct. 26, 1987 Sec. 102(e) Date Oct. 26, 1987 PCT Filed Feb. 27, 1986 PCT Pub. No. WO87/05257 PCT Pub. Date Sep. 11, 1987.A method of making annular polymeric articles in which a workpiece is placed on a cylindrical shaping surface and is divided about the perimeter into alternating first and second portions. Moulding is done in two stages, the first stage including moulding the first portions, and the second stage including moulding the second portions interposed between the first portions at the same time maintaining the pressure exerted on the first portion, after which the workpiece is vulcanized. The mould includes a cylindrical core (1) having a shaped surface, mounted on a base and serving to accommodate the workpiece thereon, and elements (5, 6) for squeezing the workpiece arranged around the cylindrical core (1) alternately, the first elements (5) having each side surfaces (7) parallel with the axis of symmetry of this element (5), whereas the second elements (6) having each side surfaces (7) of the neighboring first elements (5) arranged at an angle ( alpha ) to the axis of symmetry of this element (6), the kinematic linkage of the first and second elements (5 and 6) with the device for moving them in the radial direction being adapted for a successive movement initially of all the second elements (6) and then all the first elements (5).
Inventors:
Kozaczewski Gennadi Gennadievich
Boykov Hradimill Petrovich
Guskov Valeri Hradimirovich
Morodan Oleg Ivanovich
Sizoba Svetlana Ivanovuna
Gordonichev Yuri Nikolaevich
Boykov Hradimill Petrovich
Guskov Valeri Hradimirovich
Morodan Oleg Ivanovich
Sizoba Svetlana Ivanovuna
Gordonichev Yuri Nikolaevich
Application Number:
JP50237586A
Publication Date:
September 14, 1988
Filing Date:
February 27, 1986
Export Citation:
Assignee:
Berorusski Politehniceski Institute
International Classes:
B29C33/02; B29C33/20; B29C33/22; B29C43/02; B29C43/14; B29C43/20; B29C43/36; B29D23/00; B29D29/00; B29D29/08; B30B7/04; B29K21/00; B29K105/24; B29L29/00; (IPC1-7): B29C33/02; B29C33/20; B29K21/00; B29K105/24; B29L29/00
Domestic Patent References:
| JPS5527229A | 1980-02-27 |
Attorney, Agent or Firm:
Aoki Akira (4 outside)