A water-absorbing resin that exhibits excellent absorption performance and a high permeation rate with respect to liquids to be absorbed, and that effectively reduces liquid leakages, even in an absorbent body using a large amount of the water-absorbing resin. The water-absorbing resin is formed from a polymer of a water-soluble ethylenically unsaturated monomer, and when a cross-sectional image of the water-absorbing resin obtained by X-ray computer tomography is observed, the percent area of cavity portions in the cross-sectional image is 2-10%. The liquid flow rate index when a physiological saline liquid column flow rate test is performed on the water-absorbent resin having a particle diameter of 250 to 500 μm at 37° C. is 5-20.

Provided are a superabsorbent polymer and a preparation method thereof, including preparing a base resin and conducting surface modification of the base resin in the presence of an inorganic filler. The method of preparing the superabsorbent polymer of the present invention may provide a superabsorbent polymer having improved rewetting property and liquid permeability.

Provided are a superabsorbent polymer and a preparation method thereof, including preparing a base resin and conducting surface modification of the base resin in the presence of an inorganic filler. The method of preparing the superabsorbent polymer of the present invention may provide a superabsorbent polymer having improved rewetting property and liquid permeability.

A forming apparatus for forming a plurality of apertures in a nonwoven substrate is provided. The apparatus includes intermeshing members having a first and second member. The first member includes a body portion and a plurality of conical-shaped pins. The plurality of conical-shaped pins each have a first section having a first wall extending from a base portion to a distal portion, at least a portion of the first wall disposed at a first angle greater than 17.5 degrees relative to a central axis. The plurality of conical-shaped pins each have a second section having a second wall extending from a base portion, the base portion extending from the first member body portion, at least a portion of the second wall disposed at a second angle relative to the central axis of each conical-shaped pin, the second angle being different than the first angle and less than 20 degrees.

A forming apparatus for forming a plurality of apertures in a nonwoven substrate is provided. The apparatus includes intermeshing members having a first and second member. The first member includes a body portion and a plurality of conical-shaped pins. The plurality of conical-shaped pins each have a first section having a first wall extending from a base portion to a distal portion, at least a portion of the first wall disposed at a first angle greater than 17.5 degrees relative to a central axis. The plurality of conical-shaped pins each have a second section having a second wall extending from a base portion, the base portion extending from the first member body portion, at least a portion of the second wall disposed at a second angle relative to the central axis of each conical-shaped pin, the second angle being different than the first angle and less than 20 degrees.

The present disclosure provides a dressing configured to cover a wound. The dressing includes a substrate layer, a contact layer and a readable pattern layer. The substrate layer is light-permeable. The contact layer is located at a side of the substrate layer, and the contact layer is configured to contact the wound or skin around the wound. The readable pattern layer is disposed on the contact layer. The readable pattern layer includes a plurality of positioning marks and a plurality of colored cells. The positioning marks are configured to define an information area. The colored cells are located in the information areas, wherein at least part of the colored cells includes a biological indicator, and the positioning marks and the colored cells are visible through the substrate layer.

The present disclosure provides a dressing configured to cover a wound. The dressing includes a substrate layer, a contact layer and a readable pattern layer. The substrate layer is light-permeable. The contact layer is located at a side of the substrate layer, and the contact layer is configured to contact the wound or skin around the wound. The readable pattern layer is disposed on the contact layer. The readable pattern layer includes a plurality of positioning marks and a plurality of colored cells. The positioning marks are configured to define an information area. The colored cells are located in the information areas, wherein at least part of the colored cells includes a biological indicator, and the positioning marks and the colored cells are visible through the substrate layer.

A multi-layer absorbent product is provided that includes a first layer that is either liquid permeable or liquid impermeable and a layer of a treated nonwoven, woven or knitted textile material or a treated textured plastic yarn. The layer of textured plastic yarn or of nonwoven, woven or knitted textile material has uniformly spaced deposits of a natural polymer crosslinked to a synthetic polymer in the absence of non-polymeric crosslinking agent, where each of the deposits is a continuous polymer network that covers the textile or plastic underneath the deposit and interpenetrates the network of textile fibers or of plastic pores acting as a scaffold to interconnect the polymer network with the fiber network or with the network of plastic pore walls. A process for preparing the layer of textile material or of textured plastic yarn with uniformly spaced deposits is also provided.

A multi-layer absorbent product is provided that includes a first layer that is either liquid permeable or liquid impermeable and a layer of a treated nonwoven, woven or knitted textile material or a treated textured plastic yarn. The layer of textured plastic yarn or of nonwoven, woven or knitted textile material has uniformly spaced deposits of a natural polymer crosslinked to a synthetic polymer in the absence of non-polymeric crosslinking agent, where each of the deposits is a continuous polymer network that covers the textile or plastic underneath the deposit and interpenetrates the network of textile fibers or of plastic pores acting as a scaffold to interconnect the polymer network with the fiber network or with the network of plastic pore walls. A process for preparing the layer of textile material or of textured plastic yarn with uniformly spaced deposits is also provided.

A multi-layer absorbent product is provided that includes a first layer that is either liquid permeable or liquid impermeable and a layer of a treated nonwoven, woven or knitted textile material or a treated textured plastic yarn. The layer of textured plastic yarn or of nonwoven, woven or knitted textile material has uniformly spaced deposits of a natural polymer crosslinked to a synthetic polymer in the absence of non-polymeric crosslinking agent, where each of the deposits is a continuous polymer network that covers the textile or plastic underneath the deposit and interpenetrates the network of textile fibers or of plastic pores acting as a scaffold to interconnect the polymer network with the fiber network or with the network of plastic pore walls. A process for preparing the layer of textile material or of textured plastic yarn with uniformly spaced deposits is also provided.