Resin compositions, layers, and interlayers comprising a poly(vinyl acetal) resin that includes residues of an aldehyde other than n-butyraldehyde are provided. Such compositions, layers, and interlayers can exhibit enhanced or optimized properties as compared to those formulated with comparable poly(vinyl n-butyral) resins.

A speaker is disclosed, which comprises a vibration system and a magnetic circuit system cooperating with the vibration system. The vibration system includes a speaker diaphragm, the speaker diaphragm comprises two surface layers compounded together and at least one intermediate layer positioned between the two surface layers, at least one of the surface layers is a thermoplastic polyester elastomer film layer, the at least one intermediate layer is an adhesive layer, the speaker diaphragm has Young's modulus of 5-700 MPa and an amplitude of 0.25 mm-1 mm, and the speaker has F.sub.0 of 150-1500 Hz. The speaker has a good sounding effect.

In one aspect, there is provided a fabric containing gas therein, the fabric comprising a weave between warps and wefts, wherein each warp includes an elongate array of a plurality of individual gas cells, wherein neighboring gas cells are physically coupled to each other via a connection, wherein the connection is monolithic with the gas cells, and each cell contains the gas therein.

Provided is a double-faced PSA sheet having excellent detergent resistance. The PSA sheet according to this invention comprises a PSA layer and is adhesive on both faces. The PSA sheet shows a push-peel strength of 30 N/cm.sup.2 or greater after a detergent immersion test involving immersion in a standard detergent at 40° C. for 24 hours. It also has an adhesive strength retention rate of 50% or higher, determined as the ratio of push-peel strength P2 after the detergent immersion test to push-peel strength P1 before the detergent immersion test.

A foam structure is provided. The foam structure includes a plurality of resilient elements and a plurality of flexible connecting elements connected between the resilient elements. The resilient element comprises an upper material layer, a lower foam material layer, and an intermediate material layer. Two adjoining intermediate material layer are connected with each other through at least one connecting element provided therebetween, but an interspace is also provided therebetween. The resilient elements and flexible connecting elements may be integrally formed by integral molding with a foam material as a one-piece foam structure.

A multilayered stretched polyamide film which is biaxially stretched, and comprises three layers composed of a polyamide resin composition and comprising layer B as an easily adhesive layer, layer A as a base layer, and layer C as an easily slippery layer in this order, wherein the film satisfies the following (1) to (4); (1) the layer A contains 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass; (2) the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of the polyamide 6 copolymer in which a ratio of the copolymerization component in the copolymer is 3 to 35% by mass; (3) the layer C contains 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average diameter of 0.1 to 10 μm; (4) the film has tensile strength at break of 150 MPa or more both in MD direction and TD direction; and (5) the film has laminate strength of 3.3 N/15 mm or more.

A window member according to an embodiment of the inventive concept includes a first base member having a first thickness, a first impact absorbing layer disposed on one surface of the first base member and having a storage modulus less than that of the first base member and a second thickness, a first hard coating layer disposed on the first impact absorbing layer, and a second hard coating layer disposed on the other surface that is opposite to the one surface of the first base member. Here, a ratio of the second thickness to the first thickness is equal to or greater than about 1.0 and equal to or less than about 1.67. The first base member is bent with respect to a bending axis extending in one direction.

Disclosed herein are devices for preventing or treating an injury to an individual. Also provided are devices and methods for alleviating pain or discomfort caused by equipment or other padding or articles of clothing or uniform. The device can include a disposable padded tape having a plurality of force absorbing zones. It can also include an adhesive layer for attaching the device to a body contacting surface.

Disclosed herein are conformable protection pads, which can be integrated into articles such as clothing and protective cases. An exemplary cushioning pad can include an upper layer and a lower layer and cushioning material therebetween in a first cushioning region and one or more second cushioning regions, and one or more grooves between the first cushioning region and the second cushioning regions to enable articulation of the second cushioning regions relative to the first cushioning region.

A laminated glazing used as a head-up display screen includes two sheets of glass and a viscoelastic plastic interlayer arranged between the sheets of glass. The interlayer includes at least one layer made of viscoelastic plastic with vibro-acoustic damping properties. The interlayer has a cross section that decreases in a wedge shape from the top to the bottom of the glazing. A resonant frequency f.sub.2 of the second resonance mode of a laminated glazing bar with a surface area of 25 mm×300 mm composed of two glass sheets each 2.1 mm thick, between which is incorporated the interlayer, determined by measuring the mechanical impedance (MIM) at 20° C. according to standard ISO 16940, is between 760 Hz and 1000 Hz and the loss factor η.sub.2 of the second resonance mode of the same bar, determined by MIM under the same conditions, is greater than or equal to 0.25.