Paper making and fiber liberation – Processes and products – Non-uniform – irregular or configured web or sheet
Patent
1977-07-18
1978-10-17
Bashore, S. Leon
Paper making and fiber liberation
Processes and products
Non-uniform, irregular or configured web or sheet
162142, 162 65, 162 25, 162207, D21B 112, D21C 900
Patent
active
041207475
ABSTRACT:
Soft, absorbent, bulky paper web useful in tissue, towel, sanitary, and like products. The web is formed by supplying an aqueous furnish which includes thermomechanically defibrated pulp in admixture with chemically defibrated pulp to a foraminous surface such as a Fourdrinier wire, transferring the moist web to an imprinting fabric, thermally drying the web without mechanical compression to a consistency of from about 30 percent to about 98 percent, imprinting the pattern of the fabric into the thermally predried web, and finally drying the web. The resulting web has relatively high tensile strength at relatively low density. Also, the strength properties of the web are significantly improved if the thermomechanically defibrated pulp is made from wood chips which have been soaked in chemical solutions prior to defibrating and then treated with ozone after defibrating.
REFERENCES:
patent: 3301746 (1967-01-01), Sanford et al.
patent: 3773610 (1973-11-01), Shouvlin et al.
patent: 3821068 (1974-06-01), Shaw
Soteland et al., Norsk Skogindustri, vol. 27 #10, 162/65, pp. 274-277.
Soteland et al., Norsk Skogindustri, 6/74, pp. 165-169.
Bohmer, E., "Norsk Skogindustri," pp. 249-252, 9/73.
Kleinschmidt David Charles
Sarge, III Henry David
Bashore S. Leon
Braun Fredrick H.
Gorman John V.
Smith William F.
The Procter & Gamble & Company
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