Tung Choi Ma from Brooklyn, NY, age 78

Repulpable, Water Repellant Paperboard

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US Patent:

56352794, Jun 3, 1997

Filed:

Aug 15, 1994

Appl. No.:

8/290645

Inventors:

Tung C. Ma - Fort Lee NJ
Arnold L. Berzins - Westwood NJ
Charles J. Davis - Goshen NY
Bruce T. Watson - Shreveport LA

Assignee:

International Paper Company - Purchase NY

International Classification:

B32B 100
B05D 136

US Classification:

428174

Abstract:

Paperboard having a water-repellant coating which includes a polymer matrix/wax/pigment mixture and is applied to the paperboard as an aqueous formulation. The polymer matrix includes polymer chains which are ionically cross-linked through pendant carboxylic acid groups to provide, together with the wax and pigment components, a substantially continuous, water-repellant film which more readily breaks down under the alkaline conditions of repulping. The coated board also exhibits low slip and resistance to blocking, and is particularly well-suited in corrugated box constructions used in shipping containers for perishable food items such as meats, poultry, fishery products, fruits and vegetables. The pigmented or unpigmented coating formulations are also used as an overcoat over preprinted paperboard surfaces to simultaneously provide scuff and water resistance.

Repulpable, Water Repellant Paperboard

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US Patent:

56269455, May 6, 1997

Filed:

Sep 28, 1993

Appl. No.:

8/128582

Inventors:

Arnold L. Berzins - Westwood NJ
Tung C. Ma - Fort Lee NJ
Charles J. Davis - Goshen NY

Assignee:

International Paper Company - Purchase NY

International Classification:

B32B 906

US Classification:

428174

Abstract:

The specification discloses paperboard having a water-repellant coating which includes a polymer matrix/wax mixture and is applied to the paperboard as an aqueous formulation. The polymer matrix includes polymer chains which are ionically cross-linked through pendant carboxylic acid groups to provide, together with the wax, a substantially continuous, water-repellant film which more readily breaks down under the alkaline conditions of repulping. The coated board also exhibits improved release characteristics and resistance to blocking, and is particularly well-suited in corrugated box constructions used in shipping containers for perishable food items such as meats, poultry, fishery products, fruits and vegetables.

Repulpable, Water Repellant Paperboard

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US Patent:

60663790, May 23, 2000

Filed:

Jun 2, 1997

Appl. No.:

8/867251

Inventors:

Tung Chan Ma - Fort Lee NJ
Arnold L. Berzins - Westwood NJ
Charles J. Davis - Goshen NY
Bruce T. Watson - Shreveport LA

Assignee:

International Paper Company - Purchase NY

International Classification:

B32B 100
B32B 300

US Classification:

428 53

Abstract:

Paperboard having a water-repellant coating which includes a polymer matrix/wax/pigment mixture and is applied to the paperboard as an aqueous formulation. The polymer matrix includes polymer chains which are ionically cross-linked through pendant carboxylic acid groups to provide, together with the wax and pigment components, a substantially continuous, water-repellant film which more readily breaks down under the alkaline conditions of repulping. The coated board also exhibits low slip and resistance to blocking, and is particularly well-suited in corrugated box constructions used in shipping containers for perishable food items such as meats, poultry, fishery products, fruits and vegetables. The pigmented or unpigmented coating formulations are also used as an overcoat over preprinted paperboard surfaces to simultaneously provide scuff and water resistance.