92 results about "Sanitary pads" patented technology

Provided is a top sheet for a disposable diaper and sanitary pad which is prepared by manufacturing a perforated hydrophobic nonwoven having a weight of 25g / m2 or less, and embossing / laminating the nonwoven and an absorbent material through thermal adhesion or ultrasonic adhesion. Conventional hydrophilic nonwovens commonly used as top sheets for disposable diapers and sanitary pads have sufferedfrom the major shortcoming that they cause skin irritation. Unlike conventional hydrophilic nonwovens, the novel perforated hydrophobic nonwoven used as the top sheet for a diaper according to the present invention are provided with decreased skin irritation and improved skin friendliness and dryness. The process for manufacturing a disposable diaper or sanitary pad using a perforated nonwoven alone may cause problems.; The nonwoven top sheet of the present invention has functions and roles to overcome such problems caused by using the perforated nonwoven alone. Furthermore, less lint is produced on the surface of the nonwoven top sheet during the process of embossing / laminating the perforated hydrophobic nonwoven having a weight of 25g / m2 or less and the absorbent material through thermal adhesion or ultrasonic adhesion. Furthermore, the surface of the nonwoven top sheet of the present invention is patterned or dimpled during embossing / laminating, thereby reducing the area contactingthe skin of a user. As described above, the nonwoven top sheet for a sanitary pad and diaper has a reduced amount of surface active agent contacting the skin of the user, has less lint on the surfacethereof, and has a reduced area contacting the skin of the user, thereby having improved skin friendliness.

An absorbent multi-layer hygiene product comprising a plurality of stacked absorbent pads that are releasably attached to each other. Each absorbent pad includes a liquid-pervious topsheet, a liquid-impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet. Each topsheet and backsheet extends beyond the absorbent core and forms an outer peripheral edge to sandwich the absorbent core. Each peripheral edge includes a pair of opposed longitudinal edges and a pair of opposed end edges. Each backsheet has a garment-facing surface and an adhesive disposed on the peripheral edge of the garment-facing surface to releasably secure the adjacent layers to each other.

The invention relates to the field of paper making, and discloses high water absorbent wet-strength paper. The high water absorbent wet-strength paper is prepared through the following steps: repulping bleaching chemical pulp to obtain a component A; repulping bleaching chemical pulp, then processing the bleaching chemical pulp through NaOH, washing the processed pulp until a pH value of the processed pulp is 7.0-7.5 to obtain a component B; mixing the component A and the component B, adding a water absorbent assistant agent to carry out beating until the degree of beating is 28-35 DEG SR andthe fiber length is 2-2.5mm; adding a wet strength agent and a retention aid to the beaten pulp, then conveying the resulting mixture to a paper machine to obtain the high water absorbent wet-strength paper. The high water absorbent wet-strength paper is applicable for coating materials of sanitary towels and sanitary protecting pad water absorbent material. According to the present invention, the process of the method is simple; the strength of the paper is mainly achieved through hydrogen bonding between the fibers, the wet strength agent is added to enable the paper to have the wet strength property, the special adhesive is not required, such that the paper has good softness, good wet strength property, good water absorption and good water permeability property, the properties of the paper can compare with the properties of the non-woven fabrics and the dry-method paper, but the production cost is lower than the production costs of the non-woven fabrics and the dry-method paper, and the high water absorbent wet-strength paper is more environmentally-friendly than the non-woven fabrics and the dry-method paper.

The present invention generally relates to a method and apparatus for a making a formed fibrous article and more specifically to method and apparatus for making a formed fibrous article useful as an absorbent core structure in a disposable sanitary article such as a sanitary napkin, panty liner, diaper or the like. The present invention also relates to a disposable sanitary article including a formed fibrous article according to the present invention as a core structure thereof.