Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1985-08-27
1989-07-18
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428167, 428172, 428219, 428342, 428512, 4285375, B41M 312
Patent
active
048492787
ABSTRACT:
A flexible and durable paper-based web particularly useful as label stock for flexible, squeezable containers. The paper web includes a substrate containing cellulose papermaking fibers. The substrate contains a fine crepe pattern that has been subjected to pressure to smooth the substrate surface. The substrate also contains as a saturant between about 15 and 75 parts by weight per 100 parts of fiber of a soft polymer saturant characterized by a glass transition in temperature from about -45.degree. C. to 0.degree. C. The resulting saturated substrate has a flexibility in the range of from about 10 mg. to 50 mg. generally and an elongation in the range of from about 15% to 35% generally with a Sheffield smoothness in the range of from about 20 to 250 generally. These properties are unique in a paper web and provide highly beneficial results in use as labels which may be repeatedly flexed on a squeezable container without wrinking. In use as a label the web preferably contains a print receptive coating on one side and adhesive coating on the opposite side. The method of the invention includes the steps applying the fine crepe patter to the paper-based substrate, saturating the substrate, and calendering it to improve the surface smoothness. Additional steps, particularly for label applications will include coating with a print receptive coating and the adhesive coating on opposite sides.
REFERENCES:
patent: 2941661 (1960-06-01), Picard et al.
HYCAR Service Bulletin 6902.
Herrick William D.
Kimberly-Clark Corporation
Robinson Ellis P.
Schwartz P. R.
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