Package capable of preventing foam formation, method of manufact

Stock material or miscellaneous articles – Hollow or container type article

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428 342, 428 3692, 428407, 4284111, 4285375, 428704, 25217421, 252305, 252321, 252358, B65D 8572, D21H 140

Patent

active

048761222

ABSTRACT:
A package capable of preventing the formation of foam when being filled with liquid aqueous products, in which at least a part of the inside of the package is coated on the inside with an antifoaming agent which comprises an antifoaming, water-insoluble compound encapsulated in crystalline urea. In the manufacture of the package, the crystalline urea and the antifoaming compound are dissolved in a mixture of water and an organic solvent forming a solution, and applying the solution to at least a part of the inner side of the material forming the package, whereupon the solvent is driven off.

REFERENCES:
patent: 4275244 (1981-06-01), Helfert et al.
patent: 4364777 (1982-12-01), Grunert et al.
patent: 4522740 (1985-06-01), Schmid et al.
patent: 4548729 (1985-10-01), Schmid et al.
patent: 4624713 (1986-11-01), Morganson et al.
Encyclopedia of Polymer Science & Technology, vol. 2 pp. 166-168, & vol. 13 p. 410, (Antifoaming Agents & Surface-active Agents).

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