Process for making tissue-absorbent particle laminates
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United States of America Patent
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Jul 25, 1989
Grant Date -
N/A
app pub date -
Jun 20, 1984
filing date -
Jun 20, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process of making a liquid absorbing laminated structure comprising long lengths of absorptive tissues and an intermediate layer of absorptive particles is performed while the tissues are traveling in the direction of their lengths. A film of moistening liquid is transferred to a surface of a first tissue which is then supported in substantially horizontal position and showered with dry absorbent particles, which are rendered adhesive by absorption of the moistening liquid. A second tissue is superposed and the assembly is bonded together by passing it through the nip between a heated roller having a surface temperature of at least 110.degree. C. and a pressure roller. These rollers are pressed together at the nip by a pressure of at least 350 pounds per square inch and each has a surface hardness in excess of 90 Shore A Durometer.
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