Absorbent laminate
AssigneeParagon Trade Brands, Inc.
InventorHarry J. Chmielewski
Life of this patent
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Abstract
A disposable absorbent garment comprising a topsheet, a backsheet and an absorbent core disposed between the topsheet and backsheet is disclosed. The absorbent core is formed from at least one and preferably more than one laminate comprising three layers, including an upper layer, a lower layer and a central fibrous layer containing from about 50-95% by weight superabsorbent polymer. The upper and lower layers comprise tissue, airlaid fluff pulp or synthetic non-woven fibrous layers. The upper and lower layers together assist to maintain the integrity of the core during manufacture and in use, contain the superabsorbent polymer within the insult area of the garment and act to diffuse multiple insults so that gel blocking is minimized. The absorbent garment thus formed is very thin, lightweight and economical.
Claims32
An absorbent article comprising:
- a liquid permeable topsheet;
- a liquid impermeable backsheet associated with said topsheet;
- and
- an absorbent core positioned between the topsheet and the backsheet, the absorbent core comprising a first absorbent laminate, said first absorbent laminate comprising:
- an upper layer near the topsheet;
- a lower layer near the backsheet;
- and
- an absorbent layer positioned between the upper and lower layers;
- wherein
- the side edges of said absorbent layer are substantially uncovered by said upper and lower layers;
- said upper layer comprises a material selected from the group consisting essentially of tissue, airlaid fluff pulp and synthetic non-woven;
- said lower layer comprises material selected from the group consisting essentially of tissue, airlaid fluff pulp and synthetic non-woven;
- and
- said absorbent layer comprising about 50-95% SAP by weight and having a SAP efficiency (AUL) of at least 80%.
An absorbent article comprising:
- a liquid permeable topsheet;
- a liquid impermeable backsheet associated with said topsheet;
- and
- an absorbent core positioned between the topsheet and the backsheet, the absorbent core including:
- a central absorbent laminate comprising an absorbent layer sandwiched between an upper layer and a lower layer wherein the side edges of said absorbent layer are substantially uncovered by said upper and lower layers;
- and
- a wrapping absorbent laminate substantially enclosing said central absorbent laminate;
- said wrapping laminate comprises a second absorbent layer sandwiched between an outer layer and an inner layer wherein the side edges of said second absorbent layer are substantially uncovered by said outer and inner layers;
- and
- said absorbent layers of said central laminate and said wrapping laminate comprising about 50-95% SAP by weight.
An absorbent laminate for absorbent garments comprising:
- a central absorbent layer formed from about 75-95% by weight superabsorbent polymer and 5-25% by weight concentration additives;
- an upper layer positioned above said central absorbent layer, said upper layer selected from the group consisting essentially of airlaid fluff pulp, synthetic non-woven and tissue;
- and
- a lower layer positioned below said central absorbent layer, said lower layer selected from the group consisting essentially of airlaid fluff pulp, synthetic non-woven and tissue;
- wherein the side edges of said absorbent layer are substantially uncovered by said upper and lower layers.
An absorbent core for absorbent garments comprising:
- an absorbent laminate comprising an absorbent layer sandwiched between an upper layer and a lower layer;
- wherein
- the side edges of said absorbent layer of said absorbent laminate are substantially uncovered by said upper and lower layers;
- said absorbent layer of said absorbent laminate formed from about 75-95% by weight super absorbent polymer (SAP) and about 5-25% by weight concentration additives;
- said upper and lower layers of said absorbent laminate selected from the group consisting essentially of airlaid fluff pulp, synthetic non-woven, and tissue;
- and
- an upper absorbent layer positioned above said absorbent laminate, said upper absorbent layer comprising cellulose fibers;
- wherein
- said absorbent laminate has a width dimension which is substantially constant along its length and said upper absorbent layer has varying width dimensions along the longitudinal length thereof.
Dependencies are inferred from the claim text.