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Secondary Stripper for Laminating Machine

IP.com Disclosure Number: IPCOM000047191D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Fessel, BS: AUTHOR [+4]

Abstract

During the fabrication of multilayer ceramic substrates, a stack of ceramic green sheets is punched and laminated in a press. During this process it must be assured that the green sheet stack does not buckle or move. This article describes the addition of a secondary stripper to the laminating die, to thereby prevent internal distortion in the green sheet stack. Referring to Fig. 1, the laminating die includes a blanking punch 2 and a primary stripper 3. During blanking, pressure is applied to green sheet stack 5 by applying air pressure to shedder 6. Secondary stripper 1, which is located between punch 2 and primary stripper 3, supports and holds selvedge 4 prior to and during blanking and lamination, by means of spring and air pressure. Fig. 2 illustrates the detailed design of the secondary stripper.

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Secondary Stripper for Laminating Machine

During the fabrication of multilayer ceramic substrates, a stack of ceramic green sheets is punched and laminated in a press. During this process it must be assured that the green sheet stack does not buckle or move. This article describes the addition of a secondary stripper to the laminating die, to thereby prevent internal distortion in the green sheet stack. Referring to Fig. 1, the laminating die includes a blanking punch 2 and a primary stripper 3. During blanking, pressure is applied to green sheet stack 5 by applying air pressure to shedder 6. Secondary stripper 1, which is located between punch 2 and primary stripper 3, supports and holds selvedge 4 prior to and during blanking and lamination, by means of spring and air pressure. Fig. 2 illustrates the detailed design of the secondary stripper. It was found that when a flat stripper was used, insufficient holding force was applied. Thus, secondary stripper 1 includes a stinger 7, having corner sections 8 which are higher than the edges 9. Secondary stripper 1 is double acting to facilitate access for cleaning.

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