Abstract:
An insulated damp-proof course comprises a flexible plastics membrane (12), for example of polythene, and a thermal insulating sheet (14) bonded to one side of the membrane (12) by a suitable adhesive. The sheet (14) is formed of an expanded or extruded polystyrene foam and is bonded under pressure to the membrane (12) so as to enable the bonded structure (10) to be rolled upon itself without damage to the material. Such an insulated damp-proof course is extremely advantageous not only for its inherent properties but also the ease with which it can be handled and laid due to the fact that it can be made available in a roll.
Abstract:
A method and product produced thereby of bonding insulation board to a substrate. The method comprises applying by spraying a layer of an adhesive (which may be foamed by water or a fluorocarbon) to a substrate, positioning the insulation board on the substrate in the desired position prior to curing the adhesive followed by curing the adhesive. The adhesive consists of a heated mixture of a polyurethane adhesive and an isocyanate curing catalyst which are admixed at substantially equal viscosities in a proportion to permit curing the adhesive at a temperature of less than 140`F. The insulation board is positioned on the adhesive preferably from about one to about ten minutes after spraying the adhesive layer onto the surface of the substrate.
Abstract:
An opaque polymeric film having enhanced moisture barrier and mechanical properties. The film has a base layer which includes a blend of a high crystallinity polypropylene having an isotactic stereoregularity greater than 93 % and a cavitating agent in an amount effective to cavitate the base layer.
Abstract:
The invention concerns layer-structure elements consisting of at least one plastic-foam and/or latex-foam layer plus particulate, superabsorbent polymers for the absorption of water and aqueous liquids. The elements contain the superabsorber, located on, between or under the foamed-plastic and/or foamed-latex layer, in specified amounts and/or locations and a fixed weight per unit area, and in a ratio of plastic foam and/or latex foam to superabsorber of 1:500 to 50:1. The plastic/latex foam can contain fillers, pigments and/or synthetic fibres. The layered elements have an elevated absorbing power for water and aqueous liquids, particularly when under stress. They are manufactured by spreading the foam over a flat surface and applying the superabsorber in the required proportion, optionally using a template, the superabsorber then being fixed by heating. Layered elements of this kind are suitable for use in personal-hygiene articles, as components of natural or synthetic floors, as insulating materials for pipes and lines, above all cables, and building constructions, as liquid-absorbing and retaining components in packaging materials and as parts of garments.
Abstract:
An energy absorbing panel comprising a resilient polyurethane foam core having a density in the range of from about 1.5 to about 24 pounds per cubic foot and an indentation force deflection at 25 %, when measured pursuant to ASTM 3574-B1, less than about 4000 pounds and at least one energy absorbing surface comprised of a flexible reinforcing layer covering the resilient polyurethane foam core. The panel is useful in a variety of applications where energy management is required. Upon impact, the panel is capable of absorbing at about 70 % of the input energy. Further, upon compressor of the panel at the energy absorbing surface to about 50 % by volume of the uncompressed panel in a direction substantially normal to the reinforcing layer, the panel recovers to at least about 90 % of the volume of the uncompressed panel in less than about 30 minutes. The panel is particularly advantageous for use in vehicular applications such as door panels, instrument panel topper pads, air bag doors and the like.
Abstract:
In a sandwich structure which comprises two outer layers (1) fastened to core material (2) which is cut into shaped pieces, preferably to form a checkered pattern, which define gaps (4) therebetween, the gaps (4) are filled with an elastomeric, rubber-like material of a thermosetting resin type. This material is preferably introduced into the gaps in a flowable state, either by injecting the filler under pressure or by suction.
Abstract:
An insulating sheathing panel has an insulating core of a cellular material, such as foam, sandwiched between polyisocyanate, such as PMDI, impregnated cover sheets of cellulosic material. The resulting panels offer structural reinforcement as well as insulating qualities to a building framework.
Abstract:
In composite materials consisting of at least a solid bearer layer of a propylene polymer and a foam layer, also of a propylene polymer, these layers may be bonded in that only the side of the bearer layer facing the foam layer, possibly with a raised structure, is plasticized by heating and the bearer and foam layers are pressed together. A very firm bond is produced.
Abstract:
Promotional headgear (1) comprises a brim portion for seating on the head of a user, and a display portion (3) which is pushed into an upstanding position with respect to the brim portion when in use, by the user's head. The headgear (1) comprises an open cell foam material (6) having a printed film (5) adhered to a surface thereof, and can be manufactured by cutting or stamping an outline from a sheet of laminated foam material (38).
Abstract:
The invention pertains to a composite panel (40) comprising a foamed thermoplastic core layer (39) which is joined on both sides without adhesive to thermoplastic outer layers (25, 25') reinforced by glass-fibre mats. The composite panel is used to make moulded fittings for motor vehicles.