Browse Prior Art Database

Structure for Increased Adhesion of Textured Metals to Polymers

IP.com Disclosure Number: IPCOM000107880D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 1 page(s) / 59K

Publishing Venue

IBM

Related People

Chen, PC: AUTHOR [+3]

Abstract

A structure is disclosed whereby the adhesion force between a sheet metal having a known surface roughness (texture) and a thermoplastic adhesive may be increased. This structure uses a thermosetting plastic or thermoplastic layer beneath a thermoplastic adhesive. In the case of a thermoplastic sub-layer, the glass transition temperature of the sub-layer must be significantly above that required for bonding the textured metal to the thermoplastic adhesive. Inorganic sub-layers may also be used. The sub-layer may be upon an inorganic, organic, or organometallic substrate layer although this is not a requisite.

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Structure for Increased Adhesion of Textured Metals to Polymers

      A structure is disclosed whereby the adhesion force between a
sheet metal having a known surface roughness (texture) and a
thermoplastic adhesive may be increased.  This structure uses a
thermosetting plastic or thermoplastic layer beneath a thermoplastic
adhesive.  In the case of a thermoplastic sub-layer, the glass
transition temperature of the sub-layer must be significantly above
that required for bonding the textured metal to the thermoplastic
adhesive.  Inorganic sub-layers may also be used.  The sub-layer may
be upon an inorganic, organic, or organometallic substrate layer
although this is not a requisite.  This structure is particularly
useful when the sub-layer and adhesive layer are dielectric materials
used to separate conductors; the conductors being formed from the
substrate and thin sheet metal layers, respectively.  Bonding of the
textured sheet metal is accomplished by elevated temperature/pressure
processing as is commonly described in lamination art. However, here,
the thickness of the surface texture upon the thin sheet metal is
purposely made thicker than the layer thickness of the thermoplastic
adhesive.  An alternative is to choose a thermoplastic adhesive layer
thickness which is less than the known thickness of the metal surface
texture. Sufficient pressure must be applied during the lamination
process so that the surface texture on the sheet metal (being greater
than th...