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Primary Examiner: Dixon, Jr., William R.
Assistant Examiner:
Attorney: Kurlandsky; Samuel, Robinson; Robert H., Roberts; Kenneth E.

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Title: Gypsum wallboard

Abstract: A specially prepared paper bond liner, gypsum wallboard, and gypsum wallboard process which bonds the liner to the core by an adhesive confined to the paper-core interface, the adhesive comprising certain starches placed on the bond liner in their raw state.


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Inventors: Long, William J. (Chicago, IL, US)

Application Number: 491097
Filing Date: 1974-07-23
Publication_date: 1977-09-27
Assignee: United States Gypsum Company (Chicago, IL)
Primary Class(es): 428/201 156/39, 156/44, 428/211.1, 428/219, 428/317.7, 428/535, 428/536
Other Classes:
US Patent Ref:
2044401Jun, 1936Roos154/2.
3189511Jun, 1965White161/162.
3307987Mar, 1967Bieri156/41.
3414467Dec, 1968Ferrara161/266.
3463685Aug, 1969Elsevier156/44.
3516882Jun, 1970Cummisford156/39.
3690981Sep, 1972DeFrank et al.161/137.
3691003Sep, 1972Elischer161/159.

Other Refs: Other References: Delmonte, "The Technology of Adhesives" Hafner Publ. Co., 1947, pp. 277-290.