Abstract:
Provided are layered non-woven structures comprising a fibrous, water-permeable anchoring layer and a fibrous layer having fibers entangled about the anchoring layer, including patterned and non-patterned structures The structures provide high drapeability Also provided are personal care products such as sanitary pads and wipes comprising the present structures and methods of making the structures.
Abstract:
The present invention is directed to a method of forming nonwoven webs comprising particulates. The method of forming the nonwoven web generally comprising the steps of forming fibers from a melt fibrillation process, forming at least one fluid stream containing particulates, mixing said fibers with said particulates to form a fiber-particulate mix, and depositing the mix on a surface to form a web. The nonwoven web will have the particulates entrapped in the web. The nonwoven web may comprise a layer having a significant number of nanofibers with diameters less than one micron.
Abstract:
A fibrous layer that includes a refined blend of crosslinked cellulosic fibers and noncrosslinked cellulosic fibers. In one embodiment, the layer includes about 85 percent by weight crosslinked fibers and about 15 percent by weight noncrosslinked fibers. An absorbent construct that includes the fibrous layer and a liquid storage layer. Personal care absorbent products that include the distribution layer.
Abstract:
An absorbent material that can be used as an absorbent core in absorbent articles such as disposable diapers, feminine hygiene products and incontinence devices is provided. An absorbent material of this invention contains cellulosic fibers at least a portion of which cellulosic fibers have a relative crystallinity of less than about 65 percent. The absorbent material has superior absorptive, strength, and suppleness properties when compared to existing core materials. The material can be air-laid in one or more layers. 00000
Abstract:
An absorbent article for use in cleaning oil spills comprises a first exposed outer layer of hydrophobic, liquid-permeable, fibrous polymeric nonwoven web and an absorbent body, adjacent the outer layer, comprising oil absorbent, cellulose-based material. Desirably, the article further comprises a second exposed outer layer of hydrophobic polymeric material with the absorbent body disposed between the first and second exposed outer layers. The absorbent article is placed on a layer of oil resting on the surface of a body of water for oil spill clean up. The absorbent article selectively absorbs oil over water because the outer hydrophobic layer repels water but attracts oil and transfers the oil to the oil absorbent body encased between the exposed outer layers. This invention results in considerable savings in cost and in non-renewable resources because the bulk of the product is a cellulose-based material, which is renewable, while only a small portion is polymeric nonwoven, which is non-renewable.
Abstract:
An inexpensive sheet or web shaped fibre material for use e.g. in sanitary napkins typically consists of a mixture of short cellulose fibres and some 15 % of relatively long, thermoplastic binder fibres. It is a noticeable problem that the short fibres "dust" out of the material, and according to the invention this is remedied in that the material, when made by dry forming, is provided with a surface coating of very thin layers of pure binder fibres. In addition to a marked holding back of the dust, these layers condition that the amount of binder fibres in the base material can be halved and that the breaking stress of the material is noticeably improved. Thereby the products are usable not only as inserts, but also as individual, self-contained units e.g. for wiping in domestic or industrial cleaning.
Abstract:
A method for manufacturing of an absorbent structure in an absorbent article, such as a sanitary napkin, tampon, panty protector, incontinence guard, diaper, bed protector, wound or sore dressing, saliva absorbent and like articles is comprising the use of absorbent material in roll form directly in the product without first defibrating the material and then forming a mat. The material possesses good acquisition properties, which are meaningful to the function of the product. A high surface dryness is obtained, among other things. In addition to cellulose fibres, the absorbent structure may also include superabsorbent material and/or binding fibres, among other ingredients. The pulp mat is very thin, therewith obviating the need to compress the mat further in the product. In the case of certain product applications, the material is softened mechanically prior to its use as an absorbent material.
Abstract:
A fire resistant laminate resists flame spread and flame penetration therethrough. The laminate comprises (A) a solid, combustible lamina; and bonded to the lamina (A), a hard, thin, continuous layer (B) comprising an inorganic cementitious composition. Layer (B) is capable of maintaining its structural strength and dimensional stability with zero flame spread when exposed to a flame temperature of 2000 F for one hour. The inorganic cementitious composition in a fluid state is capable of adhesively bonding to wood and maintaining an adhesive bond to the wood after the fluid composition is dried to form the solid, thin layer. The inorganic cementitious composition consists essentially of (1) a mixture of two or more hydraulic setting or chemical setting inorganic cements, and (2) an activator. Each of the cements is capable of being set at a temperature to about 120 F within about 45 minutes by the activator. The resulting laminate has a fire retardant classification of Class I (or A).