A surface covering element can have a rigid core. The rigid core can include at least one densified fiber batt. The rigid core can have a first surface and an opposed second surface that are spaced apart along a first axis. The rigid core can have a plurality of edges that define a periphery of the rigid core. The plurality of edges can include at least a first edge and an opposed second edge that are spaced along a second axis that is perpendicular to the first axis. The first edge can include a tongue, and the second edge can define a groove.

The invention relates to a nonwoven unit comprising at least one nonwoven layer having at least one first layer and at least one second layer. The second layer is in the form of a nonwoven layer composed of continuous filaments. The average pore size of pores formed in the first layer is smaller than the average pore size of the pores between the filaments of the second layer. The second layer has functional particles which are embedded in the pores between the filaments of the second layer. The first layer forms a barrier preventing the penetration of particles or functional particles having a size greater than 150 m.

A cover member of the present invention is a cover member to be placed on a face of an object to prevent passage of a foreign matter through an opening of the face, the cover member including: a protective membrane having a shape configured to cover the opening when the cover member is placed on the face; and a first substrate layer joined to one of principal surfaces of the protective membrane. The first substrate layer has a laminated structure including at least two substrate films, and is positioned between the protective membrane and the face when the cover member is placed on the face. The at least two substrate films include a non-foam film and a foam film. The cover member of the present invention is suitable for improving the peelability from a member supply sheet.

The present disclosure provides composite materials comprising nettings, mattings or meshes thermally bonded to outer layers of nonwoven fibers that may be configured for use in a variety of applications and products. A composite material comprises a first layer of netting comprising intersecting strands and a second layer in contact with the first layer. The second layer comprises first and second fiber components. The first fiber components have a melting point at least 20 degrees higher than the melting point of the netting. The second fiber components have a melting point within 20 degrees Celsius of the fibers in the netting layer. This allows the second fiber components to thermally bond with the netting at contact points upon the application of heat and pressure. The first fiber components do not substantially thermally bond to the netting and thus form an outer layer, such as a sock, that protects the netting layer.

A surface covering element can have a rigid core. The rigid core can include at least one densified fiber batt. The rigid core can have a first surface and an opposed second surface that are spaced apart along a first axis. The rigid core can have a plurality of edges that define a periphery of the rigid core. The plurality of edges can include at least a first edge and an opposed second edge that are spaced along a second axis that is perpendicular to the first axis. The first edge can include a tongue, and the second edge can define a groove.

A process is disclosed for making a layered material comprising a micro- and/or nanostructured layer in a resin, including providing a substrate as a first layer; providing an adhesive sheet comprising at least one layer of nanofibre nonwoven fabric of a solidified resin; at least partially coating the substrate with the adhesive sheet; and heating the assembly comprising the substrate and adhesive sheet for a time interval (t) sufficient to bring the layer of nanofibre nonwoven fabric to a heating temperature (T) sufficient to cause a phase transition of the layer of nanofibre nonwoven fabric, to generate a micro- and/or nanostructure of localized accumulations of thermosetting acrylic resin and/or thermoplastic resin. The layer of nanofibre nonwoven fabric in thermosetting acrylic resin and/or thermoplastic resin of the adhesive sheet is supplemented with at least a plurality of nano-elements in a material different from the resin of the adhesive sheet.

The present invention provides a reinforcing fiber substrate having a resin material layer containing thermoplastic resin fibers, wherein the occurrence of microcracks caused by the resin material layer is reduced; and the present invention relates to a reinforcing fiber substrate 30 comprising one or more reinforcing fiber layers 330, 340, 350 comprising reinforcing fibers, one or more resin material layers 310 to 316 comprising thermoplastic resin fibers, and auxiliary yarns, wherein the auxiliary yarns maintain the integrity of the reinforcing fiber layer and/or the reinforcing fiber substrate by connecting the reinforcing fibers and/or the reinforcing fiber layers to each other, and wherein the mean fiber diameter of the thermoplastic resin fibers is 0.5 m to 35 m.

Disclosed is a new multi-layer nonwoven interlining and the production process thereof. The process allows a multi-layer nonwoven interlining to be obtained simultaneously with a single process on a single production line. The process includes a fiber opening step, a fiber feeding step, a carding step, a levelling step of the additional layer by the thermal treatment, and a point bonding step of the carded web and additional layer. As a result of the process, a structure is obtained where the carded web is point-bonded onto the additional layer.

A spunbonded nonwoven laminate comprising at least two spunbonded nonwoven layers made of continuous filaments, wherein at least one crimped spunbonded nonwoven layer comprising bulked continuous filaments is present. The bulked continuous filaments of the at least one crimped spunbonded nonwoven layer are multicomponent filaments comprising at least one first polymer component and at least one second polymer component. At least one reinforcing spunbonded nonwoven layer which consists or substantially consists of non-bulked continuous filaments and/or continuous filaments that are less bulked in comparison with the continuous filaments of the at least one crimped spunbonded nonwoven layer is present. The continuous filaments of the reinforcing spun-bonded nonwoven layer comprise at least one binder component arranged at their surface. The melting temperature difference between the binder component of the continuous filaments of the reinforcing spunbounded nonwoven layer and the first polymer component of the continuous filaments of the at least one crimped spunbounded nonwoven layer is less than 15 C. The laminate has a maximum cantilever flexural strength of at most 100 mm.

Reinforced microporous polyolefin sheets comprise one or more layers of a microporous polyolefin and a non-woven fabric at least partially embedded in the microporous polyolefin. The reinforced microporous polyolefin sheet is made in an extrusion lamination process by which a polyolefin sheet and non-woven fabric are laminated, followed by sequential cold and hot stretching steps to produce the micropores.