Method for making a laminated article

Details Method for making a laminated article Method for making a laminated article

2000-04-14

2001-03-20

Seidleck, James J. (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyamidoester

C428S343000, C428S354000, C428S3550RA, C428S3550AC

Reexamination Certificate

active

06203916

ABSTRACT:

TECHNICAL FIELD
The present invention is directed to laminating adhesive compositions and, more particularly, to aqueous laminating adhesive compositions based on vinyl ester/acrylic copolymers for wet lamination of substrates.
BACKGROUND
There is a constant effort in the adhesives art to develop aqueous laminating adhesive compositions for wet lamination of substrates, for example packaging materials such as cardboard, that provide improved adhesion without requiring the addition of volatile organic solvents.
SUMMARY OF THE INVENTION
An aqueous adhesive composition is disclosed. The adhesive composition includes from about 30 weight percent to about 65 weight percent solids dispersed in an aqueous medium, wherein the solids comprise a polymer having repeating units derived from a vinyl ester monomer and having a glass transition temperature of about −15° C. to about +15° C. and from about 0.1 parts by weight to about 40 parts by weight of a plasticizer compound per 100 parts by weight of the polymer.
A laminated article is disclosed. The laminated article includes a first substrate layer, a second substrate layer and an adhesive layer interposed between the first and second substrate layers and bonding the first and second substrate layers together, wherein the adhesive layer comprises the solids portion of the above disclosed aqueous adhesive composition.
A method for making a laminated article wherein two substrate layers are bonded together by a dried layer of adhesive composition is disclosed. The method includes applying a wet layer of the above-described aqueous adhesive composition to a first substrate layer, covering the wet layer of adhesive composition with a second substrate layer and drying the layer of adhesive composition to form the laminated article.


REFERENCES:
patent: 3668170 (1972-06-01), Maruta et al.
patent: 3708388 (1973-01-01), Lindermann et al.
patent: 4018732 (1977-04-01), Lakshmanan
patent: 4020029 (1977-04-01), Gorbunow
patent: 4316830 (1982-02-01), Mallon
patent: 4617343 (1986-10-01), Walker et al.
patent: 1141895 (1983-02-01), None
patent: 1274644 (1990-09-01), None
patent: 2085206 (1993-06-01), None
Handbook of Adhesives, Third Edition, Irving Skeist, Ph.D., Skeist Inc., Whippany, NJ, pp. 437-449.

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