Internal protective coatings for sensitive resinous laminae
First Claim
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1. A method for preventing damage in a laminate or multi-layer composite to a sensitive resinous lamina or layer by incompatible additives of adjoining plastic laminae or layers which method comprises:
- (a) coating at least one surface of a sensitive resinous sheet with a polymerized cross-linkable protective coating mixture selected from the group consisting of an acrylic based copolymer containing at least a predominance of acrylic moieties or an amine-aldehyde resin;
(b) curing said polymerized crosslinkable protective coating mixture to form a cross-linked protective coating;
(c) positioning said sensitive resinous sheet so that said protective coating is interposed to separate the resulting sensitive resinous lamina or layer from the resulting adjacent plastic lamina or layer; and
(d) bonding said laminate or multi-layer composite.
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Abstract
Thermoplastic laminae are given scratch and mar resistance on an external face as well as protection from incompatible additives of adjacent adhesive layers on an internal face by a single cross-linked protective coating.
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Citations
16 Claims
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1. A method for preventing damage in a laminate or multi-layer composite to a sensitive resinous lamina or layer by incompatible additives of adjoining plastic laminae or layers which method comprises:
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(a) coating at least one surface of a sensitive resinous sheet with a polymerized cross-linkable protective coating mixture selected from the group consisting of an acrylic based copolymer containing at least a predominance of acrylic moieties or an amine-aldehyde resin; (b) curing said polymerized crosslinkable protective coating mixture to form a cross-linked protective coating; (c) positioning said sensitive resinous sheet so that said protective coating is interposed to separate the resulting sensitive resinous lamina or layer from the resulting adjacent plastic lamina or layer; and (d) bonding said laminate or multi-layer composite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. A laminate or multi-layer composite comprising at least one lamina or layer of sensitive resin having adhered thereto on at least one internal face a polymerized, cross-linked, protective coating selected from the group consisting of an acrylic based copolymer containing at least a predominance of acrylic moieties or an amine-aldehyde resin, said protective coating having adhered thereto on the face opposite said lamina of sensitive resin an incompatible additive containing adhesive interlayer.
Specification