Compositions – Ammonia – alkali or base – bindant containing
Patent
1981-04-02
1984-01-31
Barr, Josephine
Compositions
Ammonia, alkali or base, bindant containing
428 40, 428 41, 428 43, 428195, 428211, 427261, 427286, 427288, 427395, 524300, 524422, 524401, C09K 300
Patent
active
044288573
ABSTRACT:
Adhesive products such as label stock, labels, tapes and the like having a facestock, an adhesive layer and a removable, fibrous backing are described. The backing is provided with integral embrittled zones which crack when the adhesive product is flexed and offer gripping points for removal of the backing. The embrittled zones contain brittle, film-forming organic polymer suffused among the fibers. The presence of the polymer in the embrittled zone helps to enhance the brittleness of the zones and to reduce the transfer of residual chemical embrittling agent from embrittled zones of the backing to portions of the facestock brought into contact therewith when the adhesive product is stacked or rolled. Embrittled zones are preferably formed by applying a thickened acidic solution comprising a polymer emulsion to the backing of the adhesive product and then curing and drying the solution by heating.
REFERENCES:
patent: 2100385 (1937-11-01), Dreyfus
patent: 2373954 (1945-04-01), Frankfurther
patent: 3006793 (1961-10-01), Wheeler
patent: 3035957 (1962-05-01), Morgan
patent: 3677460 (1972-07-01), Whitman
Translation of Japanese Pat. Appli. 11392-71, pp. 1-6, "Process For Making Adhesive Products Having Embrittled Zones".
Lacy Robert M.
Taylor Benjamin J.
Avery International Corp.
Barr Josephine
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