Abstract: By achieving an extruded, foamed core formed from plastic material peripherally surrounded and integrally bonded with a cooperating synthetic, plastic, extruded, outer layer, a unique, multi-component, multi-layer synthetic closure is provided which may be employed as a bottle closure or stopper for any desired product, whether the product is a liquid, a viscous material, or a solid distributed in a bottle or container and dispensed through the open portal of the container neck. The present invention achieves a mass producible, resilient, synthetic bottle closure which is employable for any desired bottle, including wine. By employing the present invention, a multi-component or multi-layer synthetic closure is attained which possesses physical properties substantially equal to or better than the physical properties found in cork material, which has caused such cork material to be the principal closure material for wine bottles.

Abstract: By achieving an extruded, foamed core formed from plastic material peripherally surrounded and integrally bonded with a cooperating synthetic, plastic, extruded, outer layer, a unique, multi-component, multi-layer synthetic closure is provided which may be employed as a bottle closure or stopper for any desired product, whether the product is a liquid, a viscous material, or a solid distributed in a bottle or container and dispensed through the open portal of the container neck. The present invention achieves a mass producible, resilient, synthetic bottle closure which is employable for any desired bottle, including wine. By employing the present invention, a multi-component or multi-layer synthetic closure is attained which possesses physical properties substantially equal to or better than the physical properties found in cork material, which has caused such cork material to be the principal closure material for wine bottles.

Abstract: By providing a plurality of elongated, independent members and securely integrally affixing said members to each other by adhering or welding, a unique panel and/or block construction is attained having any desired size or shape needed for a particular application. Preferably, the independent, elongated members comprise a synthetic resin foam material formed in any desired cross-sectional shape. In one embodiment, the solid elongated, independent members are alternatingly affixed to hollow, elongated independent members in order to attain a panel and/or block having different resiliency and flexibility characteristics. This invention also incorporates a unique method for manufacturing the panels and/or blocks in a single, continuous process whereby all of the elongated members forming the panel and/or block are simultaneously welded together.

Abstract: According to the present invention, novel foam panels and blocks are provided which are produced by welding and/or adhering foam tubes to one another. The foam panels are used particularly as insulating and/or drainage panels, and the foam blocks are used for the production of super lightweight panels the cavities of which are optionally filled with gypsum, cement, or other material. Composite structures made therefrom exhibit excellent sound-absorbent properties.Moreover, the invention provides a process and an apparatus for welding foamed synthetic resin tubes to one another and/or to other foam materials. The synthetic resin surfaces to be welded together are guided by way of a spacer means at a distance past an electrically heated heat source to form a heating channel where the surfaces are melted and pressed together thereafter. The process and the apparatus are suited especially well for welding foams of non-crosslinked low-density polyethylenes.

Abstract: An air-borne and footstep noise insulating panel of synthetic resin foam is provided for floating floor pavements or floating wooden floors, said panel having in the interior thereof a multiplicity of voids extending normal or obliquely from one panel edge to the opposite panel edge. The panel preferably consists of a flexible closed-cell synthetic resin foam having a volume weight of 15 to 25 kg/m.sup.3, especially less than 20 kg/m.sup.3, having a cell diameter of less than 0.3 mm, and exhibiting good elastic recovery. The insulating panel has a dynamic stiffness, measured according to DIN 52214, of 1 to 13 MN/m.sup.3 and also possesses the required properties regarding long-term, burning, and insulating behavior.

Abstract: The present invention relates to cellular plastic insulating tubes or cellular plastic insulating plates of a flexible plastic foam with a groove- and tongue-like closing system arranged along the longitudinal axis, in which the groove and tongue can be undercut. The tongue consists of a more rigid or stiffer material than the material forming the groove, or, if the tongue consists of the same material as the insulating cellular material, this is reinforced or stiffened.