Method of forming composite absorbent members

Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Stratified or layered articles

Reexamination Certificate

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C264S177170, C264S258000, C264S271100, C264S279100

Reexamination Certificate

active

06932929

ABSTRACT:
A method for forming a composite absorbent member is provided that includes:a) extruding a first fibrous component through a first meltblowing die and intermingling pulp fibers with the first fibrous component to form a first admixture;b) extruding a second fibrous component through a second meltblowing die and intermingling pulp fibers with the second fibrous component to form a second admixture; andc) codepositing the first and second admixtures on a collecting surface so as to form a composite structure having at least a first layer and a second layer. The second layer has a higher weight percentage of pulp fibers than the first layer, and the average diameter of the pores within the second layer is smaller than the average diameter of the pores within the first layer.

REFERENCES:
patent: 3339550 (1967-09-01), Haaften
patent: 3793678 (1974-02-01), Appel
patent: 3971373 (1976-07-01), Braun
patent: 4100324 (1978-07-01), Anderson et al.
patent: 4118531 (1978-10-01), Hauser
patent: 4467012 (1984-08-01), Pederson et al.
patent: 4531945 (1985-07-01), Allison
patent: 4604313 (1986-08-01), McFarland et al.
patent: 4655757 (1987-04-01), McFarland et al.
patent: RE32649 (1988-04-01), Brandt et al.
patent: 4798603 (1989-01-01), Meyer et al.
patent: 4801494 (1989-01-01), Datta et al.
patent: 4908026 (1990-03-01), Sukiennik et al.
patent: 5145727 (1992-09-01), Potts et al.
patent: 5248309 (1993-09-01), Serbiak et al.
patent: 5569226 (1996-10-01), Cohen et al.
patent: 5609588 (1997-03-01), DiPalma et al.
patent: 5643240 (1997-07-01), Jackson et al.
patent: 5649916 (1997-07-01), DiPalma et al.
patent: 5728081 (1998-03-01), Baer et al.
patent: 5834385 (1998-11-01), Blaney et al.
patent: 5891120 (1999-04-01), Chmielewski
patent: 5916670 (1999-06-01), Tan et al.
patent: 6160197 (2000-12-01), Lassen et al.
patent: 6323388 (2001-11-01), Melius et al.
patent: 6387495 (2002-05-01), Reeves et al.
patent: 6420626 (2002-07-01), Erspamer et al.
patent: 0339461 (1993-01-01), None
patent: WO 9824621 (1998-06-01), None
PCT Search Report, Mar. 21, 2003.

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