B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/48 (2006.01) B29C 65/52 (2006.01) B29C 65/78 (2006.01) G11B 7/26 (2006.01)
Patent
CA 2399503
The invention relates to a device for vacuum compressing discoid substrates, especially DVD substrates. The device comprises a vacuum chamber in which a first substrate support (9) for the A-disc (A-substrate support) and a second substrate support (10) for the B-disc (B-substrate support) are accommodated. The invention is characterized in that an intermediate element (9) is provided which can be displaced inside the vacuum chamber and which is equipped with sealing means on the periphery thereof. Said intermediate element divides the vacuum chamber into a first chamber (20) (low-pressure chamber) that is connected to a vacuum pump and into a second chamber (19) that can be connected as desired or alternately to a compressed air source (21) and/or to a vacuum pump (24). The intermediate element is provided as a first substrate support (A-substrate support) on the side of the low-pressure chamber, whereas the second substrate support (B-substrate support) is provided opposite the A- substrate support inside the vacuum chamber.
L'invention concerne un dispositif permettant de comprimer sous vide des substrats sous forme disques, notamment de substrats de DVD. L'invention comprend une chambre à vide, dans laquelle sont montés un premier support de substrat (9) pour le disque A (support de substrat A) et un second support de substrat (10) pour le disque B (support de substrat B). L'invention se caractérise en ce qu'il est prévu un élément intermédiaire (9) pouvant être déplacé dans la chambre à vide et présentant en périphérie des moyens d'étanchéité. La chambre à vide se répartit en une première chambre (20) raccordée à la pompe à vide (chambre de dépression) et en une seconde chambre (19) pouvant être raccordée au choix et en alternance à une source d'air comprimé (21) et/ou à une pompe à vide (24). L'élément intermédiaire est formé sur la face de la chambre de dépression comme premier support de substrat (support de substrat A), alors que le second support de substrat (support de substrat B) est prévu dans la chambre à vide, de manière opposée au support de substrat A.
Fetherstonhaugh & Co.
Krauss-Maffei Kunststofftechnik Gmbh
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