Abstract:
A multilayer article comprises at least one layer of substantially nonporous material fusion bonded in the absence of extrinsic intervening adhesive to at least one layer of microporous material comprising a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided, water-insoluble filler at least about 50 percent of which is siliceous, and interconnecting pores.
Abstract:
The laminate (1) comprises at least two layers, namely an outer layer (2) consisting of a plastic film and an inner layer (5) also consisting of a plastic film, possibly with an intermediate layer (3) interposed between these, whereby means of an adhesive layer (4) the inner layer (5) is joined with the outer layer (2) or the intermediate layer (3). The inner layer (5) is obtained by coextrusion of a non-foamed plastic material with a foamed plastic material to the effect that the plastic film constituting the inner layer (5) consists of a non-foamed or solid part (6) which is adhered to the outer layer (2) or the intermediate layer (3), and a foamed part (7) containing a large number of gas-filled cavities or cells (8) and forming the inner surface (10) of the laminate (1). The terms 'outer' and 'inner' refer in this context to the positioning in a package made from the laminate (1). By means of the laminate (1) there is achieved a saving of material and weight together with advantages relating to processing and application compared with a similar conventional laminate.
Abstract:
An integral foam product consisting of a substantially closed three-layer laminate skin formed to a final desired shape, and a foam body which is formed by injecting an expandable mixture, for example, a raw liquid of reactive polyurethane in the form of a liquid or cream and combined unitarily with the inner surface of the skin without permeating into the skin. The three-layer laminate skin consists of an outermost layer composed of a gas-permeable cloth, such as a knitted cloth or a woven cloth, an intermediate layer composed of thin foam, such as thin urethane foam and combined with the inner surface of the outermost layer, and a screening film combined with the inner surface of the intermediate layer and composed, for example, of a polyvinyl chloride film or a polyurethane film having therein a plurality of fine pores capable of passing a gas therethrough but incapable of passing an expandable mixture therethrough. The screening film ensures the excellent fluidity of the expandable mixture owing to the excellent smoothness thereof, prevents any permeation of the expandable mixture into the intermediate layer of the foam film and the outermost layer, and enables the formation of a generally soft and homogeneous foam body.
Abstract:
Improved instrument pad surgical drape for use during surgical procedures is disclosed which is resistant to melting caused by high intensity light generated from sources such as fiberoptic illuminating systems. The instrument pad and drape comprise an infrared energy reflective film/foam laminate that may also have a high coefficient of friction which is useful for retaining surgical instruments in place and preventing them from slipping off the pad during a surgical procedure.
Abstract:
A three-layer structure comprising a vinyl chloride resin layer (first layer), a layer (third layer) made from a composition comprising a vinyl chloride resin and an olefinic polymer having a complex dynamic viscosity eta * of 1.2 x 10 P or below, and a layer (second layer) which is made of a vinyl chloride resin foam and lies between the first and third layers, with the proviso that the third layer may alternatively be an expanded one; a process for producing the above three-layer structure by powder molding; a molding comprising a base made of a polyolefinic polymer and a surfacing made of the above three-layer structure which is laminated with the base; and a process for producing the molding.
Abstract:
The composite section (1) has an adhesive tape (2) that is durably bonded to a sealing strip (3). The adhesive tape (2) has a flexible substrate (4) of foam, the first surface (5) of which has a first adhesive layer (6) covered with a pull-off liner (7). A second surface (8) of the substrate (4) opposite the first surface (5) is thermally melted onto a facing surface (9) of the sealing strip (3) and is durably welded with the likewise heated facing surface (9) of the sealing strip (3) to form the composite section (1).
Abstract:
A composite PTFE article and a process for producing the article is described. A PTFE article is stretched while a thermoplastic polymeric layer is adhered to the PTFE article thereby causing the thermoplastic polymer layer to be stretched and become thin. The expanded composite PTFE article may be in the shape of a film, tube, rod or filament. The expanded composite PTFE article exhibits high cut-through resistance and increased resistance to penetration by low surface tension liquids.
Abstract:
The present invention relates to a method of manufacturing a fiber-reinforced plastics material. In this method, a foam of a binding agent containing powdery thermoplastic matrix is applied onto a reinforcing fiber web which is then dried, heated and pressed.
Abstract:
A method of adhering a relatively heavy sheet or three-dimensional object to a support surface using an electrostatically chargeable intermediate sheet, including providing a sheet which is capable of carrying a charge sufficient to support at least three ounces per square foot of intermediate sheet surface for at least one month and charging sheet using a contaminant free buffer material selected from the group consisting of wool, natural fiber, artificial fiber and chamois. A decorative hanging including such an intermediate sheet is also disclosed.
Abstract:
An insulation panel is formed with an upper layer (1) in the form of a weatherproof membrane which is permeable to water vapour, an intermediate foamed layer (3) and a lower metallic layer (4) which acts as a vapour barrier. The foamed layer (3) provides thermal insulation and acts as a bond between the outer layers (1 and 4). Ideally a glassfiber layer (2) will be embedded into the upper region of the panel to provide added rigidity. The edges of the panel will ideally be formed with interlocking rib and groove formations which can also be interconnected with supporting channel members for a complete roofing system.