Coated sheet material
First Claim
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1. A coated sheet material comprised of:
- a porous substrate sheet material having at least two oppositely disposed surfaces; and
a barrier coating on at least one surface of said substrate sheet material wherein said barrier coating is formed from a dispersion comprised of a mixture of;
(i) a cross-linkable first polymer that is resistant to penetration by water moisture when cured, and (ii) a water-dispersible, film-forming second polymer that is resistant to penetration by grease and oil when cured, wherein said first and second polymers are different.
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Abstract
A coated sheet material made by : (a) coating a porous substrate sheet material with a barrier coating composition comprising (i) a cross-linkable polymer resistant to penetration by water moisture, and (ii) a water-dispersible film-forming polymer that is resistant to penetration by grease and oil, said barrier coating composition forming a barrier layer on said substrate sheet material; and (b) coating said barrier layer with a release coating composition wherein the cross-linkable polymer and the water-dispersible film-forming polymer are different. The coated sheet material is useful in forming articles and food wrappers for use in conventional or microwave ovens.
223 Citations
33 Claims
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1. A coated sheet material comprised of:
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a porous substrate sheet material having at least two oppositely disposed surfaces; and a barrier coating on at least one surface of said substrate sheet material wherein said barrier coating is formed from a dispersion comprised of a mixture of;
(i) a cross-linkable first polymer that is resistant to penetration by water moisture when cured, and (ii) a water-dispersible, film-forming second polymer that is resistant to penetration by grease and oil when cured, wherein said first and second polymers are different. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An article comprised of:
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a porous substrate material having at least two oppositely disposed surfaces; and a barrier coating on at least one surface of said substrate material wherein said barrier coating is formed from a dispersion comprised of a mixture of;
(i) a cross-linkable first polymer that is resistant to penetration by water moisture when cured, and (ii) a water-dispersible, film-forming second polymer that is resistant to penetration by grease and oil when cured wherein said first and second polymers are different. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A coated sheet material comprised of:
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a porous substrate sheet material having at least two oppositely disposed surfaces; a barrier coating on at least one surface of said substrate sheet material wherein said barrier coating is formed from a dispersion comprised of a mixture of;
(i) a cross-linkable first polymer that is resistant to penetration by water moisture when cured, and (ii) a water-dispersible, film-forming second polymer that is resistant to penetration by grease and oil when cured, wherein said first and said second polymers are different; anda release coating on said barrier coating. - View Dependent Claims (31)
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32. An article comprised of:
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a porous substrate material having at least two oppositely disposed surfaces; a barrier coating on at least one surface of said substrate material wherein said barrier coating is formed from a dispersion comprised of a mixture of;
(i) a cross-linkable first polymer that is resistant to penetration by water moisture when cured, and (ii) a water-dispersible, film-forming second polymer that is resistant to penetration by grease and oil when cured, wherein said first and second polymers are different; anda release coating on said barrier coating. - View Dependent Claims (33)
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Specification