B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/680
B29C 45/03 (2006.01) B29C 45/26 (2006.01) B29C 45/34 (2006.01) G11B 3/70 (2006.01)
Patent
CA 2030471
ABSTRACT OF THE DISCLOSURE A bushing for the axial retention and radial centering of a matrix in an injection mold for producing information carriers such as CD's is formed on the underside of its retention shoulder with channels for carrying away the air which tends to be compressed along the outer edge of the shoulder, thereby eliminating streaks or socalled schlieren in the information-carrier disk which is produced.
La présente invention a pour objet un manchon permettant la stabilisation axiale et radiale d'une matrice dans un moule à injection servant à la production de supports d'informations tels des disques compacts; un épaulement es formé à la partie inférieure du manchon de retenue et des conduits assurent l'évacuation de l'air susceptible d'être comprimé au bord extérieur de l'épaulement, ce qui permet d'éliminer la formation de traînées de schlieren durant la production du disque servant de support d'informations.
Lichtinger Peter
Ringelstetter Gabriel
Krauss-Maffei Aktiengesellschaft
Swabey Ogilvy Renault
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