Fibrous composition for absorbent pads, a method for the manufac

Details Fibrous composition for absorbent pads, a method for the manufac Fibrous composition for absorbent pads, a method for the manufac

1991-11-27

1993-07-27

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 13, 524 14, 524543, 523220, 428220, 604367, 604370, 604372, 604374, C08L 9702, C08L 900

Patent

active

052311228

ABSTRACT:
A fibrous composition for absorbent pads which, in addition to cellulose fibers, also contains first and second synthetic polymeric materials. At least the second polymeric material is constituted by synthetic fibers which have a higher melting point than that of the first polymeric material. The fibrous mixture is formed into the desired shape, for example, an absorbent body for disposable sanitary products, by pneumatic means. The absorbent body thus formed is then heat-treated to a temperature higher than the melting point of the first polymeric material but lower than that of the second polymeric material for a period of time so as to melt the first polymeric material and form bonding points or bridges between at least the synthetic fibers which have not melted and which constitute the second polymeric material. The absorbent body is cooled to a temperature such that the first polymeric material sets, bonding at least the synthetic fibers together so as to form a framework containing the cellulose fibers.

REFERENCES:
patent: 4216772 (1980-08-01), Tsuchiya et al.
patent: 4364992 (1982-12-01), Ito et al.
patent: 4458042 (1984-07-01), Espy
patent: 4578414 (1986-03-01), Sawyer et al.
patent: 4755179 (1988-07-01), Shiba et al.

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