Browse Prior Art Database

Flexibility Control for Ceramic Green Sheets

IP.com Disclosure Number: IPCOM000083553D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Hance, CR: AUTHOR

Abstract

Control of flexibility is important in ceramic green sheet manufacture to provide sheets which are pliable and can be punched, as well as other properties for multilayer package applications.

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Flexibility Control for Ceramic Green Sheets

Control of flexibility is important in ceramic green sheet manufacture to provide sheets which are pliable and can be punched, as well as other properties for multilayer package applications.

The binder used in making the green sheet is BUTVAR*, an organic resin.

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The addition of a nonionic surface active agent such as TRITON** X-100, which is octylphenoxy polyethyleneoxy ethanol, in an amount appreciably less than the binder BUTVAR provides a means to align the resin for maximum flexibility, without adversely effecting the enveloping of the alumina particles in making green sheets.

The possibility of hydrogen bonds forming between the acetal portion of the BUTVAR and ethanol portion of the TRITON, is combined with the possible affinity of the alcohol portion of BUTVAR with the epoxy portion of the TRITON. The repeating units of both provide a means to prevent excessive coiling of the resin and retain linearity. * Trademark of Shawinigan Products Corp. ** Trademark of Rohm & Haas Company.

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