Showing papers on "Thermoplastic published in 1970"

Biaxially oriented poly(ethylene terephthalate)bottle

Abstract: A HOLLOW, BIAXIALLY ORIENTED, THERMOPLASTIC ARTICLE, PARTICULARLY A BOTTLE, PREPARED FROM POLYETHYLENE TEREPHTHLATE WHEREIN SAID ARTICLE HAS AN INHERENT VISCOSITY OF AT LEAST 0.55, A DENSITY OF ABOUT 1.331 TO 1.402 AND A RATIO OF ARTICLE WEIGHT IN GRAMS TO VOLUME IN CUBIC CENTIMERS OF ABOUT 0.2 TO 0.005:1. SUCH ARTICLES HAVE EXCELLENT STRENGTH PROPERTIES, ARE IMPACT RESISTANT, AND ARE CAPABLE OF HOLDING LIQUIDS UNDER PRESSURES AS HIGH AS ABOUT 100 P.S.I.G. AT A TEMPERATURE OF ABOUT 50*C. WITHOUT SIGNIFICANT DEFORMATION MAKING SUCH ARTICLES USEFUL IN BOTTLING LIQUIDS UNDER PRESSURE SUCH AS BEER, CARBONATED BEVERAGES, OR AEROSOLS.

Method of making a composite plastic article of manufacture

Abstract: A layer of thermoplastic sheet material such as sheet ABS is heated to a temperature at which it is thermally formable and while at this temperature is thermally formed, as by differential gas forming, typically vacuum forming, against a shaped body of cellular thermoplastic material such as expanded polystyrene. As a result of the heat in the sheet as it is drawn against the cellular body which is at room temperature, fusion welding of the sheet to the surface of the cellular body at the interface takes place. No cement or other adhesive, organic solvent or the like is used. The result is that the cellular body is protected against puncturing, shattering under impact, abrasion, and other physical influences that would normally tend to injure it and is made much stronger. The disadvantages of prior attempts to make such composites, such as the need for preforming the sheet and then bonding it to the body and the need to use solvent-based cements or organic solvents, are completely obviated. The invention is exemplified by the manufacture of a boat having an expanded polystyrene core and layers of sheet ABS covering and fusion welded to its interior and exterior surfaces.

Modified vinyl halide polymers

Abstract: Superior impact modified vinyl halide polymers with exceptional low die swell characteristics are attained by a modifier composition which does not contribute to the instability of the vinyl halide polymers. The modified polymers are readily extrudable, even into complex and delicate shapes, at moderate conditions and in simple equipment. The modifier composition is a multiphase acrylic composite interpolymer having a first crosslinked acrylic elastomer phase, and a second, acrylic ridig thermoplastic phase polymerized onto the elastomer, having a molecular weight in the range of from about 50,000 to 600,000.

Structural panel of ribbed structures of thermoplastic resin

Abstract: Molten thermoplastic resin, e.g., polyethylene, is forced into a pattern on the surface of a rotating roll to form a web of ribs usually integrally molded to a continuous film; this web is of low density and has a high strength-to-weight ratio so as to be used for structural purposes and packaging.

Thermoplastic molding compositions of high impact resistance

Abstract: Impact-resistant thermoplastic molding compositions containing from 70 to 98 percent by weight of a polyoxymethylene and from 30 to 2 percent by weight of a block copolymer of the general formula A -- B -- A, wherein A is a polyalkylene oxide block and B is a diene polymer block.

Low-viscosity high-strength thermoplastic adhesive

Abstract: Low-viscosity high-strength thermoplastic adhesives comprising a thermoplastic linear polyester, a polymer of a monoolefinically unsaturated monomer, a viscosity decreasing additive and optionally a granular metallic material. Substrates such as sheets, film or shaped articles are bonded together with the adhesive, or single substrates are coated therewith as when surface defects are to be eliminated. Useful viscosity decreasing additives include chlorinated biphenyl, terphenyl and other aromatic compounds having a boiling point above about 250* C. and a Tg below about 10* C.

Method of preparing air-permeable laminate

Abstract: AN AIR-PERMEABLE LAMINATED MATERIAL IS PREPARED BY BONDING ONE OR MORE LAYERS OF FIBROUS MATERIAL TO A THERMOPLASTIC FILM. THE BONDING STEP IS CARRIED OUT BY SUBJECTING AN ASSEMBLY OF THE ABOVE COMPONENTS TO PRESSURE WHILE HEATING AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO PERFORATE THE THERMOPLASTIC FILM AND SIMULTANEOUSLY BOND IT TO THE FIBROUS MATERIAL. ONE OR MORE OF THE SURFACES APPLYING PRESSURE HAS A MULTIPLICITY OF CLOSELY SPACED RAISED AREAS THEREON. THE LAMINATED PRODUCT IS A FABRIC-LIKE MATERIAL USEFUL IN THE PRODUCTION OF TEXTILE ARTICLES SUCH AS CLOTHING, INDUSTRIAL FABRICS AND HOME FURNISHING FABRICS.

Encapsulating of electronic components

Abstract: The open ends of thermoplastic containers encapsulating electronic components are closed with a compatible plastic material, the materials being sealed by ultrasonic welding utilizing a specially designed energy director.

Method for preparing a porous synthetic thermoplastic film or sheet

Abstract: A method for preparing a porous film or sheet, which comprises admixing together 100 parts by volume of at least one thermoplastic resin, 5 - 150 parts by volume of a solvent, and 20-50 parts by volume of a filler, uniformly dispersing the solvent and the filler in said resin to thereby form a stock, molding a film or sheet from the resulting stock, biaxially stretching the film or sheet at a suitable temperature between the glass transition temperature of the resin and the flow temperature of the resin, and substantially removing the solvent from the film or sheet during the period between the molding and the end of the stretching without foaming.

Method of offset printing or decorating an article with thermoplastic color

Abstract: Articles are printed or decorated with thermoplastic color by an offset process, by melting the thermoplastic color in a screen, applying the melted thermoplastic color by the screen to a transfer member which is at a temperature below the melting temperature of the thermoplastic color, adhesively coating the surface of the article to be printed or decorated, and then transferring the color from the transfer member to the adhesively coated article surface.

Glass fiber laminates and method

Abstract: A panel for use as an acoustical panel or automobile headliner comprising a combination of resilient body of resin-bonded fiber and a covering decorative surfacing cloth united together with an intermediate thermoplastic sheet, and a method of forming such panel comprising superimposing the said components upon each other with a thermoplastic sheet intermediate thereof and compressing the assembly while heating to fuse the intermediate thermoplastic sheet to each of said body of resin binder with fiber and covering decorative surfacing cloth.

Thermoplastic supportive structure

Abstract: THIS COMPOSITE SUPPORTIVE STRUCTURE COMPRISES A WEB OF OPEN-CELL, RESILIENT NON-THERMOPLASTIC FOAM, SUCH AS POLYURETHANE FOAM, CONTAINING WITHIN THE SAME A MATRIX OF FOAM-LIKE THERMOPLASTIC MATERIAL, SUCH AS TRANS-1,4POLYISOPRANE, WHICH IS COHESIVE AND SUFFICIENTLY PLASTIC AT ELEVATED EMPERATURES TO BE READILY MOLDABLE AND YET CRYSTALLIZABLE INTO A RIGID STRUCTURE AT ROOM TEMPERATURE. THE FOAM-LIKE THERMOPLASTICMATRIX IS PRESENT IN SUFFICIENT QUANTITY AND DISTRIBUTED THROUGHOUT THE CELLULAR STRUCTURE OF THE WEB SO AS TO SUBSTANTIALLY IMPART ITS MOLDABILITY AND RIGIDITY CHARACTERISTICS THERETO. HE COMPOSITE FOAM-WITHIN-A-FOAM STRUCTURE IS ADVANTAGEOUSLY EMPLOYED, PREFERABLY IN PERFORATED FORM, AS AN ORTHOPEDIC WRAP WHICH, UPON HEATING, CAN BE READILY MOLDED TO AN INJURED LIMB AND THEREAFTER ALLOWED TO CRYSTALLIZED AND HARDEN TO FORM A SMOOTH, RIGID SUPPORTIVE AND PROTECTIVE CAST.

Elastomeric thermoplastic polyester polyurethane compositions stabilized against hydrolysis

Abstract: Addition of small amounts of acidic silica to improve hydrolytic stability of polyurethanes.

Method for casting an inflated tubular polyethylene film with mixed polymer of polypropylene-polybutene-1

Abstract: A LIMINATED, TUBULAR, THERMOPLASTIC FILM HAVING EXCELLENT PACKAGING AND SHIPPING ABUSE CHARACTERISTIC PRODUCED BY CONTINUOUSLY EXTURDING A LAYER OF AN ETHYLENE VINYL ACETATE COPOLYMER ONTO A TUBULAR SUBSTRATE OF A PREDOMINANTLY ETHYLENE POLYMER MATERIAL AND CONTINUOUSLY EXTURDING AN ADMIXED ISOTACTIC POLYPROPYLENE, POLYBUTENE-1 AND ATATIC POLYPROPLENE POLYMER LAYER AS THE OUTER LAYER THEREON AND THEN ORIENTING THE RESULTING LAMINATE. PRIOR TO ORIENTING, THE LAMINATE IS HEATED IN HOT WATER.

Method for making a decorative plastic laminate

Abstract: This disclosure relates to plastic laminates, preferably in the nature of an article, having an outer metalized layer, an intermediate bonding layer of a relatively low melting point, and a backing layer formed of a synthetic thermoplastic material whose melting point is at least as high and preferably higher than the melting point of the intermediate layer. The laminate is formed by bonding the outer metalized layer to the intermediate layer, preferably by heat fusion, placing the laminate of the metalized layer and the intermediate layer into a mold and injecting the backing material into the mold to form an article and to bond the backing material to the intermediate layer.

Composition of polyorganosiloxane and polyphenylene oxide

Abstract: THERE ARE PROVIDED THERMOPLASTIC COMPOSITIONS WITH IM PROVED DROP-WEIGHT IMPACT RESISTANCE COMPRISING A POLYORGANOSILOXANE AND A POLYPHENYLENE OXIDE, OPTIONALLY CONTAINING STYRENE RESINS AND A MINOR PROPORTION OF A POLYOLEFIN.

Process and device to remove static electricity from plastic films

Abstract: Process and apparatus to remove static electricity from the surfaces of thermoplastic films, sheets and fabrics comprising creating, near the thermoplastic support to be treated, a silent electrical discharge by means of an enamelled wire maintained under a high voltage disposed parallel to said support and above which are provided earth-connected conductive pieces.

Method for producing a multilayer reinforced plastic sheet material

Abstract: A FLEXIBLE, REINFORCED LAMINATED PLASTIC SHEET MATERIAL MADE FROM TWO SHEETS OF A MULTILAYER THERMOPLASTIC MATERIAL HAVING A WEB OF REINFORCING STRANDS RECEIVED THEREBETWEEN. THE TWO SHEETS OF MATERIAL AREBONDED TO EACH OTHER IN THE INTERSTICES PROVIDED IN THE WEB. THE CONTACTING SIDE OF EACH SHEET OF MATERIAL IN COMPOSED OF A LAYER OF A THERMOPLASTIC HAVING A LOWER MELTING POINT OR SEALING TEMPERATURE THAN THE OUTER LAYER OF THE MULTILAYER THERMOPLASTIC MATERIAL. THE INNER LAYERS ARE BONDED TO EACH OTHER WITHOUT THE USE OF ANY ADHESIVE BY PASSING THE TWO SHEETS AND THE ENCLOSED WEB BETWEEN ROTATING HEATED LAMINATING ROLLS.

Method for hot gas activation of thermoplastic sealing surfaces

Abstract: CONTINUOUSLY ADVANCING THERMOPLASTIC SURFACES WHICH ARE TO BE SEALED TOGETHER ARE CONTACTED WITH A STREAM OF A HOT INERT GAS WHICH IMPINGES UPON THE SURFACES IN A DIRECTION OPPOSED TO THAT IN WHICH THE SURFACES ARE ADVANCING AND AT AN ANGLE OF FROM ABOUT 10 TO 40* MEASURED FROM THE PLANE OF THE ADVANCING SURFACES. THE GAS TREATED SURFACES ARE THEN BROUGHT INTO CONTACT UNDER PRESSURE TO EFFECTUATE A SEAL BETWEEN THE SURFACES. THE STREAM OF HOT GAS PREFERABLY HAS THE CONFIGURATION OF A THIN FLAT RIBBON WITH THE LONG DIMENSION OF THE CROSS SECTION OF THE RIBBON BEING SUBSTANTIALLY PARALLEL TO THE PLANE OF THE THERMOPLASTIC SURFACE SO AS TO CREATE AN "AIR KNIFE" WHICH EFFECTIVELY REMOVES THE BOUNDARY LAYER FROM THE THERMOPLASTIC SURFACE. AN APPARATUS IS PROVIDED FOR CARRYING OUT THE ABOVE DESCRIBED PROCESS WHICH COMPRISES MEANS FOR ADVANCING THE SURFACES CONTINUOUSLY, NOZZLE MEANS DISPOSED TO IMPINGE AGAINST THE ADVNCING SURFACES A STREAM OF HOT GAS IN THE MANNER CALLED FOR ABOVE, MEANS FOR SUPPLYING GAS TO THE NOZZLE, MEANS FOR HEATING THE GAS SUPPLIED TO THE NOZZLE, AND MEANS FOR BRINGING THE GAS TREATED SURFACES INTO CONTACT UNDER PRESSURE TO EFFECTUATE SEALING OF THE SURFACES.

Foam-backed carpets

Abstract: AN INTEGRAL TUFTED CARPET, WHICH CARPET COMPRISES IN COMBINATION: A BASE FABRIC SHEET COMPRISING THERMOPLASTIC FIBERS, WHICH FIBERS ARE SUBJECT TO SHRINKAGE AT TEMPERATURES IN EXCESS OF ABOUT 200*F.; TUFTED YARNS SECURED THROUGH AND TO SAID BASE FABRIC SHEET TO PROVIDE A TUFTED PILE FACE SURFACE AND YARN LOOPS ON THE BACK SURFACE; A LAYER OF A FUSED VINYL CHLORIDE RESIN PLASTISOL COMPOSITION BONDED TO THE BACK SURFACE, THE FUSED LAYER SUBSTANTIALLY FILING THE INTERSTICES BETWEEN THE TUFTED YARN LOOPS AND THE BASE FABRIC, THE FUSED PLASTISOL COMPOSITION THE SOLE ADHESIVE EMPLOYED TO LOCK THE TUFTED YARNS TO THE BASE FABRIC, THE THERMOPLASTIC FIBERS OF THE BASE FABRIC MAINTAINED IN SUBSTANTIALLY NONHEAT-SHRINKABLE FORM; AND A LAYER OF A THERMOPLASTIC FOAM, ONE SURFACE OF THE FOAM SHEET BONDED TO THE SURFACE OF THE FUSED PLASTISOL COMPOSITION, THE LAYERS BONDED TO EACH OTHER SOLELY BY THE MELTED AND COOLED SURFACES OF THE THERMOPLASTIC VINYL CHLORIDE RESIN AND THE FOAM.

Method for the incorporation of filamentary material in a resinous matrix

Abstract: GLASS REINFORCED THERMOPLASTICS ARE FORMED BY DIRECTLY ADDING CHOPPED FILAMENTS AND PARTICULATE THERMOPLASTIC RESIN TO HEAT FABRICATING APPARATUS SUCH AS AN EXTRUDER OR PRE-PLASTICIZING INJECTION MOLDING MACHINE UNDER NONSTRATIFYING CONDITIONS TO PROVIDE A GLASS REINFORCED MOLDED ARTICLE.

Production of glass fiber-reinforced plastic articles

Abstract: Glass fiber-reinforced plastic articles such as bathtubs are produced by shaping, e.g., vacuum forming, thermoplastic material such as acrylic sheeting into a body and then applying a sprayable mixture of thermosetting unsaturated polyester resin material and a bond-improving additive consisting of a monomeric styrene compound and chalk or talc to the body to form a coating thereon. Reinforcing glass fibers are embedded in the thermosetting coating which is cured to form the resultant reinforced plastic article. The coating and the reinforcing glass fibers are preferably applied using a ''''spray-up'''' system, i.e., coating by means of a spray gun.

Imitation sliver knit pile fabric

Abstract: A LAYER OF NONVOVEN STAPLE FIBERS IS NEEDLE PUNCHED INTO A THERMOPLASTIC FILM. THE FIBERS ON ONE SIDE OF THE FILM ARE THERMALLY BONDED TO THE FILM. THE FIBERS ON THE OPPOSITE SIDE OF THE FILM ARE THEN SUBJECTED TO NAPPING AND SHEARING OPERATIONS. THE FILM IS PREFERABLY AN ORIENTED POLYPROPYLENE FILM WHICH FIBRILLATES DURING THE NEEDLING OPERATION. THE FABRIC IS USEFUL AS A LINING IN COATS.

Impact resistant thermoplastic composition

Abstract: Impact-resistant thermoplastic molding composition comprising a mixture of a styrene-acrylonitrile copolymer and a styreneacrylonitrile graft copolymer on polyacrylate backbone polymer latices. Backbone polymer latices are used which have an average particle diameter between 0.15 and 0.8 Mu and a narrow particle size distribution. The molding compositions can be used to make heavy duty utility articles which are resistant to the action of air and light.

Polyester-polyphenylene ether mixed resins

Abstract: THERMOSETTING RESIN COMPOSITIONS OF IMPROVED QUALITIES MADE BY COMBINING A HIGH-TEMPERATURE THERMOPLASTIC RESIN, I.E., A POLYPHENYLENE ETHER POLYMER WITH MIXTURES OF REACTIVE MONOMERS AND REACTIVE-TYPE POLYESTER RESINS, EACH CONTAINING POLYMERIZABLE CARBON-TO-CARBON UNSATURATION. THE POLYPHENYLENE ETHER POLYMERS COMBINE WITH THESE POLYMERIZABLE MATERIALS CONTAINING CARBON-TO-CARBON UNSATURATION IN THE PRESENCE OF A FREE RADICAL CATALYST. THE COMPOSITIONS ARE FORMED BY MODERATE HEAT AND PRESSURE INTO ARTICLES WITH EXCELLENT ELECTRICAL AND MECHANICAL PROPERTIES WHICH ARE RETAINED AT ELEVATED TEMPERATURES, AND UNDER CONDITIONS OF HIGH HUMIDITY.

Method of reinforcing the wall of a thermo-formed article

Abstract: AN IMPROVEMENT IN THE PROCESS FORDRAWING A SHEET OF THERMOPLASTIC, SYNTHETIC RESIN TO FORM A SHELL-LIKE SHAPED ARTICLE OF A TYPE WHICH WILL HAVE WALL PORTIONS EXCESSIVELY THIN AS A RESULT OF THE NORMAL DRAWING AND STRETCHING OF THE PLASTIC SHEET TO FORM THE ARTICLE. THE SHEET ISTHICKENED BEFORE IT IS DRAWN BY THE ADDITION OF SMALL PLASTIC PARTTICLES AT AREAS WHICH WILL FORM THE EXCESSIVELY THIN WALL PORTIONS OF THE ARTICLE AFTER IT IS DRAWN. THE PLASTIC PARTICLES ARE MELTED AND WELDED INTO THE SHEET WHILE IT IS BEING HEATED FOR THE DRAWING OPERATION, A SOURCE OF RADIANT HEAT BEING NECESSARY TO EFFECT THIS MELTING AND WELDING OF THE PARTICLES TO THE SHEET WITHOUT OVERHEATING THE SHEET.

Thermoplastic molding compositions and moldings of polycarbonates admixed with a graft copolymer

Abstract: THE INVENTION RELATES TO THERMOPLASTIC MOULDING COMPOSITIONS AND MOULDINGS OF POLYCARBONATES OF DIHYDRIC PHENOLS HAVING IMPROVED PROPERTIES CONTAINING PARTICULAR AMOUNTS OF PARTICULAR GRAFT POLYMERS ADMIXED TO THE POLYCARBONATES. THE PARTICULAR GRAFT POLYMERS ARE MANUFACTURED FROM ABOUT 50 TO ABOUT 90% BY WEIGHT OF POLYBUTADIENE AND A MIXTURE OF ABOUT 5 TO ABOUT 40% BY WEIGHT OF ACRYLONITRILE AND ABOUT 5 TO ABOUT 45% BY WEIGHT OF AN AROMATIC VINYL HYDROCARBON, SUCH AS STYRENE, AND SAID GRAFT POLYMERS ARE PRESNET IN AN AMOUNT OF ABOUT 0.5 TO ABOUT 9.5 PARTS BY WEIGHT FOR ABOUT 99.5 TO ABOUT 90.5 PARTS BY WEIGHT OF POLYCARBONATE.

Composition and process for injection molding thermoplastic material and glass fibers

Abstract: A composition and process for the manufacture of shaped articles by injection molding of thermoplastic material and glass fibers The process involves the heating and masticating of from about 20 to about 40 percent weight thermoplastic material in the form of a powder having a particle size from about 30 to about 200 mesh, with from about 40 percent to about 60 percent weight of the same thermoplastic material in the form of pellets having a maximum dimension of about 1/16 inch to about 3/8 inch, together with from about 20 to about 40 percent weight of glass fibers having a maximum length of about 1/16 inch The mixture is then injection molded to produce the article

Seal for plastic sheeting

Abstract: An overlap seal for joining together two edges of reinforced thermoplastic material. A plurality of strands or bands of hot melt adhesive are applied adjacent the edge of the one sheet of thermoplastic reinforced material and the edge of another sheet is positioned above the first sheet. The sheets are brought together and pressure is applied so that the heat contained in the hot melt adhesive causes a fusion of the two edges of thermoplastic to create a high strength bond. Some of the bands of thermoplastic material flow together to form a wide band with narrower bands on each side to provide an overlapped seal having increased strength.

Method of forming metallic material

Abstract: SUPERPLASTIFIABLE METALLIC CYLINDER (78% BY WEIGHT ZINC, 22% BY WEIGHT ALUMINUM), IN SEGMENTED DIE WITH INTAGLIO CHARACTERS, IS HEATED TO SUPERPLASTIC STATE BY HEATED AND PRESSURIZED THERMOPLASTIC MATERIAL (ACRYLONITRILE-BUTADIENE-STYRENE) AND EXPANDED INTO DIE TO FORM PRINTING DRUM. THERMOPLASTIC MATERIAL HARDENED IN SITU TO ADD MASS TO CYLINDER. APERTURE MYA BE FORMED IN THERMOPLASTIC MATERIAL SIMULTANEOUSLY WITH EXPANSIN OF CYLINDER INTO DIE BY MEANS OF SUITABLE MANDRELS. OTHER MATERIAL, SUCH AS THERMOSETTING POLYMERICS OR LOW MELTING METALLICS, MAY BE USED TO HEAT CYLINDER TO SUPERPLASTIC STATE AND TO EXPAND SAME INTO DIE.