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4121957 Method and apparatus for producing plastic foam boardstock and product thereof  
A pour urethane foam mixture is deposited on a thin porous non-woven fiberglass mat through which it is driven by an eccentric hexagonal beater bar. The space below the mat is limited by a second...
4116735 Method for the manufacture of a spring-interior mattress  
A method of making a mattress comprising a framework of metal springs sandwiched between first and second sheets of foam, comprises applying a strip of foamable resin mixture around the periphery...
4116736 Method of making a foam plastic cushion having a peripheral frame and an exterior cover  
A method and apparatus are disclosed for preshaping a sheet material, more particularly a textile and/or a plastic sheet, under differential pressure in a molding die, whereby to form a sack-like...
4115170 Cushion or seat structure of plastic foam with integrated cover and incorporated reinforcing grid or skeleton, and method of making same  
An integrated cushion structure, such as automobile or aircraft seat or seat back, an office chair, or the like and the method of making it, are disclosed. The cushion structure is comprised of...
4110139 Process for preparing bands or belts, particularly suitable for use as watch bands  
This invention provides a process for preparing artificial leather bands or belts, particularly those suitable for use as watch bands or straps which are characterized by bearing close resemblance...
4105481 Encapsulation method for electrical elements  
An improved process for encapsulating a cylindrical electrical element having lead wires emanating therefrom including the steps of enveloping said element in a heat-shrinkable polymeric tubular...
4102721 Barrier tape construction  
A pressure-sensitive barrier tape construction particularly suited as a covering for the vents or ports in a cavity to be filled with a thermally insulating foam, the barrier tape permitting the...
4097319 Method of manufacturing a composite foamed polyolefin sheet  
A method of manufacturing a foamed polyolefin sheet which comprises the steps of laminating a film of noncross-linked thermoplastic resin free from a cross-linking agent to at least one surface of...
4096303 Composite carpet and foam laminate and method  
The method of this disclosure relates to the application of a foam layer, in fluid form, to either an impervious or a relatively porous substrate and to the formation of a contoured foam laminate...
4093686 Sheet materials  
A process for the manufacture of a differentially expanded sheet material comprises applying an organic solvent to the surface of an expandable thermoplastic sheet containing a blowing agent and...
4090899 Thermoplastics welding method  
A welding method for joining self-supporting structures made of thermoplastics by assembling said structures to form an area of mutual overlap, generating heat in said area to produce a welding...
4090007 Embossed plastic surface covering and method of preparing same  
A chemically embossed cellular vinyl chloride resin sheet material is prepared by treating the gelled surface of a vinyl chloride resin plastisol containing a blowing agent and a peroxide catalyst...
4087296 Method for applying membrane-covered rigid foam to building surface  
An apparatus for in situ preparing and applying foam to a surface, such as a roof, and at the same time applying a membrane onto the surface of the foam, produces a foam-membrane sandwich having...
4077821 Method of forming foam laminates and headliners  
A method of forming a self-supporting contoured foam plastic laminate, including spraying a relatively flexible open cell plastic foam, preferably polyurethane, on a sheet which is to become part...
4075304 Method of making foam filled panels  
A method of making a foam filled panel by clamping two sheets together at one end thereof, spreading the sheets at the opposite ends, introducing foamable material into a hollow, closed space...
4073997 Composite panel  
A composite panel is provided which comprises an organic foam core with layers of inorganic fibers on opposite major surfaces of the core. The fibrous layers are affixed to the core in a manner...
4073049 Method of making a reinforced foam-filled resin-impregnated fiber glass covered vacuum forming mold plug  
Method of making a mold for vacuum thermoforming is made by (a) applying a polyester gel coat to a master pattern; (b) applying a rigidizing mixture of a thermosetting resin and glass to the gel...
4073998 Scrim/foil laminate  
A laminate providing a high strength, low flammability improved moisture vapor barrier for use in producing improved construction panels, to the construction panels which comprise a polyurethane...
4072548 Panel door and method of construction  
A panel door comprised of a rectangular wood frame defining a generally rectangular central opening which may be subdivided by one or two spaced apart transverse frame members to define two or...
4067759 System for sealing and repairing leaks in ruptured containers  
A system for sealing and repairing leaks in ruptured containers whereby an applicator including an open-celled sponge body is inserted into the rupture and the two interacting components of a...
4053341 Laminates of polyethylene foam with an anisotropic pore structure  
A process for the production of cross-linked polyethylene foam layers which have an anisotropic pore structure in at least one internal layer, wherein at least three polyethylene sheets which...
4049480 Method and apparatus for forming a joint in a confined space between two abutting ends of conduit liners  
Disclosed is a method and apparatus for forming a joint in a confined space between two abutting ends of conduit liners. In the method, an excavation is formed to provide access to a buried...
4046611 Manufacture of cushions  
A method of manufacturing a flexible cushion of foamed plastics material with an integrated cloth cover, comprising forming under vacuum to apply the cloth cover to the inner wall of a mold, and...
4045270 Method of and apparatus for making a non-slip plastics film  
A method of making a non-slip plastic film comprises extruding separate plasticized plastic materials in two streams so that one stream abuts against and adheres to the other to form a combined...
4036673 Method for installing surface covering or the like  
A method for installing a sheet of surface covering material on a substrate surface comprising depositing a quantity of a foamed adhesive to the substrate surface, laying the sheet on the...
4030953 Method of molding fiberglass reflecting antenna  
Fiberglass antenna for reflecting electromagnetic radiation. The antenna includes metal reflecting surface embedded within the fiberglass. The antenna is fabricated in a heated, vacuum injected mold.
4025372 Method of making a padded item  
This invention relates to a method of making fabric-faced upholstered items. The items are made by vacuum forming under heat a laminate of a cast highly plasticized vinyl chloride homopolymer or...
4025375 Method for continuous welding together of plastic sheets  
A method and apparatus for continuous welding together of sheets of the type in which adhesion is derived from the melting and re-hardening of the sheet material itself rather than from an...
4024309 Foam glass structural element and method of producing  
Foam glass developed under vacuum is continuously formed into a slab while being cladded on its major sides and longitudinal edges with sheet metal. The metal claddings or facings for the two...
4023617 Construction having integral circulatory system  
In combination, a composite construction comprising a load-bearing substrate, an impermeable liner, and disposed therebetween a circulatory system defined by a network of cells having side walls...
4022644 Foam structures and component therefore  
Walled structures are prepared from foam-in-place components such as those used to prepare rigid polyurethane foams wherein successive strips of foam are deposited and hardened within a...
4012248 Method and means for providing a foamed plastic surface with a relief structure  
A method of providing foam plastic surfaces with a relief structure comprising the steps of: producing printed films which contain at predetermined locations, substantially corresponding to the...
4000028 Method of making absorbent pads  
A procedure is provided for producing a laminate having a crushed, polymeric latex foam, preferably thermoset, bonded either to a non-woven absorbent layer which is bonded to an absorbent layer or...
3989562 Container body  
A body for a container or for a road or rail vehicle. The body comprises an inner tube formed of a wound laminate of synthetic resin impregnated material; an outer tube formed of a wound laminate...
3986253 Electrical insulator for armature shafts and method of installation  
Disclosure is made of a universally fitting electrical insulator for mounting between the armature shaft and the windings and laminations of an armature. The disclosure is also of a method for...
3986918 Apparatus for forming laminated molded bodies  
An apparatus in which a sheet is folded as a wrapper and filled with heat expandable plastic material and heated to expand said material by passing heated fluid through perforations in the sheet.
3985951 Electrical insulator including a polymeric resin foam forming composition and method of insulation  
Disclosure is made of a novel sheath and the method of its use for protecting electrical conductors and connections. The sheath comprises a tubular body which defines an interior space. The space...
3980511 Manufacture of products having high acoustic insulating characteristics  
The production of composite structural products having high sound-proofing characteristics by impregnating a mat of fibers of substantial length with an organic thermoplastic resin containing an...
3978263 Water-permeable floor covering boards  
Disclosed is a process for manufacturing elastic floor covering boards comprising a lower, water-permeable layer of natural or synthetic rubber particles bound together by an adhesive and a cover...
3978258 Embossed decorative sheet-type material and process for making same  
Embossed decorative sheet-type covering material such as sheet vinyl flooring is prepared by forming a foamed plastic layer over a pigmented layer on a substrate and then selectively crushing the...
3969471 Process of manufacturing chromic acid treated foam fibrillated webs  
Non-woven fabrics are produced from polyolefin foam fibrillated webs. The webs are treated with an aqueous solution of a small amount of chromic acid in strong sulfuric acid to improve the...
3969472 Method of manufacturing a foam fibrillated fibrous web from an isotactic polypropylene, polystyrene and α-methylstrene blend  
Non-woven fabrics are produced from oriented foam fibrillated webs contaning 50 to 98 wt. % polypropylene and 2 to 50 wt. % polystyrene. The webs are assembled in a plurality of layers and then...
3963547 Method of manufacturing composite heat-insulating material  
Method of manufacturing composite heat-insulating material, by stacking to a desired thickness pieces of aluminum foil adhesively secured to foam-forming ceramic material, filling the volume to be...
3962386 Corona discharge treatment of foam fibrillated webs  
Non-woven fabrics are produced from polyolefin foam fibrillated webs. The webs are treated with corona discharge to improve the adhesion thereof when they are laminated under heat and pressure to...
3960625 Heat insulating assembly and method for making same  
A heat insulating assembly and method for making same, the heat insulating assembly adapted to be mounted with a building, and having a first panel with a second panel secured thereto, forming a...
3961118 Simulated wood panel  
A simulated wood panel comprising a substrate with rigid elongated reinforcing members and foamed polymer coating which is molded to simulate the appearance of wood grain. The method for making...
3959049 Process for production of artificial leathers having air permeability  
A process for the production of artificial leathers having excellent air permeability and resembling a natural leather is provided, which comprises incorporating a catalyst, a foam stabilizer and,...
3958810 Ski with top edge portions of plastic material and device for securing the edge portions during manufacture  
The top edge portions of a ski of plastic material are produced in a two-part mold by placing the bottom surface sheet and edge portions of the ski on the floor of the mold while preformed top...
3956549 Boat hull connector and method  
The opposed moulded plastic shells of a shell covered foam filled structural member suitable for boat hulls and decks are connected together by a strip of material extending between the shells and...
3954544 Foam applying apparatus  
An apparatus for in situ preparing and applying foam to a surface, such as a roof, and at the same time applying a membrane onto the surface of the foam, produces a foam-membrane sandwich having...