The method for the production of curved furniture components comprises: an overlapping step of a first panel of wooden, plastic or metal material, of at least one intermediate separating layer and of a second panel of wooden, plastic or metal material for obtaining a flat semi-finished product having a perimeter edge; an interposition step of a polyurethane type adhesive between the intermediate layer and the first panel and second panel by hot dispensing of said adhesive on the surfaces of the first and the second panels which are adapted to be associated with the intermediate layer or by hot dispensing of the adhesive on the surfaces of the intermediate layer which are adapted to be associated with said first panel and second panel; a cold shaping step of the semi-finished product for obtaining a curved component; and a spraying step of a water-based auxiliary substance between the intermediate layer and at least one of the first panel and the second panel, subsequent to the interposition of the adhesive.

An adhesive tape product incorporating foam that is stitch-bonded with a stitching yarn to provide substantial dimensional stability in the machine direction without sacrificing the sound dampening and insulation properties of the foam. A pressure sensitive adhesive is disposed in overlying relation to at least one face of the foam. One or more fibrous layers may be positioned between the foam and the adhesive.

According to some embodiments, a low volume drumhead is disclosed. The low volume drumhead comprises a mesh layer to be removably coupled to a drum hoop. The low volume drumhead further comprises a non-mesh layer affixed to a beatable surface of the mesh layer. An adhesive comprising elastic polymers is used to couple the mesh layer to the non-mesh layer.

A method for producing a planar composite component having a core layer (B), which is arranged between and integrally bonded to two cover layers (A, A′), wherein the cover layers contain a cover-layer thermoplastic and wherein the core layer contains a core-layer thermoplastic, comprises the following steps: a) a heated stack with layer sequence A-B-A′ is provided; b) the heated stack (A-B-A′) is pressed; c) the pressed stack is cooled, whereby the planar composite component with consolidated layers integrally bonded to each other is formed. To improve the production method including the producibility of planar 3D components, it is proposed, that at least one of the cover layers (A, A′) in unconsolidated form comprises a fibrous nonwoven layer of 10 to 100 wt.-% thermoplastic fibers of the cover-layer thermo-plastic and 0 to 90 wt.-% of reinforcing fibers having an areal weight of 300 to 3,000 g/m.sup.2; the core layer (B) in unconsolidated form comprises at least one randomly-oriented-fiber nonwoven layer (D) formed from reinforcing fibers and thermoplastic fibers of the core-layer thermoplastic,
and that after the pressing the consolidated core layer(s) has/have an air pore content of <5 vol.-% and the consolidated core layer has an air pore content of 20 to 80 vol-%.

Disclosed is a method of manufacturing a stretchable substrate according to various embodiments of the present disclosure for realizing the above-described objectives. The method may include generating an auxetic including a plurality of unit structures and adhering one or more elastic sheets to one surface of the auxetic.

A non-wicking underlayment board and methods for forming the same. The non-wicking underlayment board includes a foam core formed of closed cell foam with reinforcement layers encapsulated within the foam core. Outer facings formed of mineral coated nonwoven fibers are positioned on opposite faces of the non-wicking underlayment panel. The non-wicking underlayment board is useful for efficient and cost effective installation of barriers and surfaces in water-resistant and waterproof environments.

A method for manufacturing a sound absorption structure comprising a cellular panel, a porous layer positioned on a cellular panel first face, a reflective layer positioned on a cellular panel second face and a plurality of acoustic elements positioned in the cellular panel. The method comprises the steps of producing, for each acoustic element, a recess in the cellular panel opening out onto the first and second faces of the cellular panel, inserting the acoustic elements into their recesses, laying an anchoring layer on the second cellular panel face, curing or polymerization at a first pressure to connect each acoustic element to the cellular panel and/or to the anchoring layer, putting in place the porous layer and the reflective layer, and curing or polymerization at a second pressure to connect the porous layer and the reflective layer to the cellular panel.

A hydroformed composite material includes an expanded spun bonded nonwoven layer having a loft of at least about 1.3 times greater than an original loft of an original unexpanded spun bonded nonwoven web from which the expanded spun bonded nonwoven layer was created, and an air permeability of at least about 1.2 times greater than an original air permeability of the original unexpanded spun bonded nonwoven web. The hydroformed composite material includes a formed film layer that includes a plurality of extended cells containing continuous fibers and/or fibrils of the expanded spun bonded nonwoven layer.

A method of making a light weight component is provided. The method including the steps of: forming a metallic foam core into a desired configuration; applying an external metallic shell to an exterior surface of the metallic foam core after it has been formed into the desired configuration; and attenuating the component to a desired frequency by forming a plurality of openings in the external metallic shell.

An acoustic panel for an aircraft nacelle includes a cellular layer configured to trap noise, a backplate fixed to one surface of the cellular layer and a facesheet fixed to another, opposite, surface of the cellular layer. The facesheet includes a layer of a preimpregnated woven material containing weft yarns spaced apart from one another and warp yarns spaced apart from one another so that the facesheet exhibits openings between the yarns.