Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1977-04-04
1978-08-08
Woodberry, Edward M.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
260 174ST, 428476, 428535, C09J 704, C08L 312
Patent
active
041058240
ABSTRACT:
Adhesive composition comprising starch, dextrine and a polyacrylamide. The composition is carried by water; but, when the composition is applied to a substrate, the water is evaporated to produce a water activatable adhesive. Thus, the composition is suitable for application to a paper backing to form an adhesive tape.
Method of preparing the adhesive from a dry polyacrylamide starting material includes the steps of first dissolving the dextrine and dry polyacrylamide in water and allowing the dextrine and polyacrylamide to mix. The starch is then added to that mixture. Preferably, the dextrine and polyacrylamide are mixed for at least a half-hour before the starch is added. To prevent the particles of dextrine and polyacrylamide from agglomerating together, it has been found advantageous to mix the dextrine and polyacrylamide in small batches. This step, however, is not critical.
It is also possible to utilize an aqueous solution containing dissolved polyacrylamide, (liquid polyacrylamide) as a starting material. In this embodiment, the dextrine, liquid polyacrylamide and starch are added to water in any order to form the adhesive mixture.
REFERENCES:
patent: 2791512 (1957-05-01), Hatch et al.
patent: 2808381 (1957-10-01), Stone
patent: 2976178 (1961-03-01), Pahl et al.
patent: 2997404 (1961-08-01), Roberson
patent: 3282870 (1966-11-01), Harmer
patent: 3684749 (1972-08-01), Arai et al.
patent: 3696065 (1972-10-01), Hoffman
patent: 3728141 (1973-04-01), Ray-Chaudhuri
patent: 3793269 (1974-02-01), Bruschtein
patent: 3950593 (1976-04-01), Bomball et al.
patent: 3988495 (1976-10-01), Lowey et al.
"Dow" Resin 164, Binder and Adhesive for Drywall Construction, The Dow Chem. Co., Midland, Mich., pp. 4 & 7.
Nashua Corporation
Woodberry Edward M.
LandOfFree
Starch-dextrine-polyacrylamide adhesive and tape does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Starch-dextrine-polyacrylamide adhesive and tape, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Starch-dextrine-polyacrylamide adhesive and tape will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-919985