Browse Prior Art Database

Adhesive Sheet Application

IP.com Disclosure Number: IPCOM000074500D
Original Publication Date: 1971-May-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Rahemba, FJ: AUTHOR [+2]

Abstract

In lamination processes for construction of multilayer electronic devices adhesive layers are affixed in sheet form by transfer of the adhesive under heat and pressure from a poorly-adherent temporary carrier (release sheet). When the carrier and adhesive are both transparent the composite may be easily aligned with the receiving substrate and inspected in situ for entrapped contaminants immediately prior to the transfer.

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Adhesive Sheet Application

In lamination processes for construction of multilayer electronic devices adhesive layers are affixed in sheet form by transfer of the adhesive under heat and pressure from a poorly-adherent temporary carrier (release sheet). When the carrier and adhesive are both transparent the composite may be easily aligned with the receiving substrate and inspected in situ for entrapped contaminants immediately prior to the transfer.

A fluoroethylene propylene carrier and thermoplastic urethane adhesive comprise a suitable composite for this purpose. This carrier has the additional advantage of retaining dimensional stability under the heat and pressure required for the transfer. The particular adhesive has the additional advantage of sealing at low temperature with minimum flow. The same adhesive may also be used with an opaque carrier such as silicone coated paper.

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