Abstract:
The present invention is directed to articles comprising nanofibers. Preferred articles include diapers, training pants, adult incontinence pads, catamenials products such as feminine care pads and pantiliners, tampons, personal cleansing articles, personal care articles, and personal care wipes including baby wipes, facial wipes, body wipes, and feminine wipes. The nanofiber webs can be used as a barrier, wipe, absorbent material, and other uses. The nanofibers, having a diameter of less than 1 micron, must comprise a significant number of the fibers in at least one nonofiber layer of the nonwoven web. The nonwoven web may have a hydrohead to basis weight ratio of greater than about 10 mbar/gsm. The nanofibers may be produced from a melt film fibrillation process.
Abstract:
A method for producing an absorbent structure in an absorbent article, such as a wound dressing and like article, which is produced by using absorption material in reel form directly in the product, without first defibering the absorbent material, and thereafter forming a mat. The material has good wicking and swelling properties which are well adapted to the function of the product; a high degree of 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 things. The pulp mat is very thin, therewith obviating the need to further compress the product. With regard to certain product applications, the material is softened mechanically prior to its use as absorption material.
Abstract:
This invention is an absorbent article comprising a main body (1) having a waist hole (3) and a pair of leg holes (4), an elastic waist portion (5) disposed along the waist hole (3), and a leg gather (6) disposed along each of the leg holes (4). The main body comprises a front section (1A) and a rear section (1B) joined to each other in a crotch region (2b) and side regions (2a) of the main body (1). The front section (1A) has at least one constituent element whose property is different from that of the corresponding element of the rear section (1B). The absorbent article is fully responsive to a variety of article configurations or constructions which require the front (1A) and rear (1B) sections to function differently or individually. A method for manufacturing such an absorbent article is also disclosed.
Abstract:
An absorbent article is disclosed for absorbing liquids, including body fluids such as menstrual discharges or urine. The absorbent article has a liquid impermeable backsheet on which is disposed an absorbent core, and first and second liquid permeable topsheet layers. The edge of the absorbent core defines a perimeter, and the first and second topsheet layers and the backsheet each extend laterally beyond the perimeter to define a continuous border segment surrounding the absorbent core. A liquid impermeable seal is formed in the border segment which surrounds the perimeter for preventing lateral migration of liquid from the absorbent core beyond the seal. The seal is formed to extend from an outer surface of the first topsheet layer to an outer surface of the backsheet, for establishing a capillary gradient in the second topsheet layer, thereby inhibiting wicking of fluid therethrough.
Abstract:
Bio-based absorbent articles are provided. Bio-based absorbent articles include a topsheet, a backsheet, and an absorbent core sandwiched there between. The topsheet and backsheet are attached to each other along opposing surfaces to define a cavity in which the absorbent core is enclosed. The components of absorbent article are selected so that at least 75% of the material comprising the absorbent article comprises a bio- based material, and preferably at least 80%, 85%, 90%, and 95% of the material comprising the absorbent article comprises a bio-based material.
Abstract:
Nonwoven textile with barrier properties containing a. a first barrier layer A with a theoretical cover coefficient TCC A, and consisting of fibres having a median fibre diameter in the layer of dAm; and b. a second barrier layer B with a theoretical cover coefficient TCC B, and consisting of fibres having a median fibre diameter in the layer of dBm; whilst i. the first barrier layer A and the second barrier layer B are together in direct contact; ii. the median diameters of fibres in the first and second layer have a theoretical fibre diameter coefficient x = (dBm-dAm)/dAm, where the theoretical fibre diameter coefficient x is less than or equal to 1 and where the theoretical fibre diameter coefficient x is greater than or equal to 0.25; and iii. the sum of the theoretical cover coefficient TCC A and TCC B is greater than or equal to 50%.
Abstract:
Se protege mediante el presente invento, una tela no tejida para ser laminada a una capa de polietileno, tal que a. Esta formada por una mezcla de fibras de polipropileno hidrófobas e hidrófilas; b. Se fabrica por medio de un proceso de cardado seguido de unión térmica c. Durante la unión térmica es grabada en al menos el 15% de su área d. Tiene un peso base mínimo de 13 gr/m.
Abstract:
Multilayer meltblown composites, articles made therefrom, and methods for making same. The meltblown composite can include a first meltblown layer comprising one or more resins having an Ultimate Elongation (UE) of from about 50% to about 250%, as measured according to ASTM D412; and a second meltblown layer comprising a propylene-a-olefm copolymer having an ethylene content of about 5 wt% to about 20 wt%; a MFR (ASTM- 1238D, 2.16 kg, 230°C) of about 10 g/10 min to about 30 g/10 min; and a heat of fusion of 75 J/g or less.
Abstract:
Temperature resistant multilayer composites, methods for making same, and articles made therefrom. The method can include extruding one or more polyolefm polymers having a MFR from less than 90 dg/min through at least one die having a plurality of nozzles to form a plurality of continuous fibers, at least one die operating at a melt pressure from greater than 500 psi (3447 kPa) to form at least one elastic meltblown layer; adhering the at least one elastic meltblown layer to at least one extensible layer to form a multilayer composite; and at least partially crosslinking the elastic meltblown layer or the extensible layer or both.