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3945093 |
Method and apparatus for producing high modulus bixial fabric
The transverse properties of high modulus fabric such as graphite are significantly improved by continuously processing the material through a multiple roller unit under warp tension while...
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3946100 |
Process for the expeditious formation and structural modification of polyester fibers
An improved process is provided for the production of polymeric filamentary material or film. Molten melt-spinnable polymeric material capable of undergoing crystallization (e.g., a polyester) is...
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3927461 |
Method of making randomly different display devices
Method of forming randomly different display devices using birefringent material viewed in polarized light by subjecting birefringent material to spray of water droplets followed by application of...
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3904720 |
Method of forming bodies of foamed plastisols having alveolate exterior surfaces
A body of blown plastisol having an alveolate exterior surface and an unctuous inner surface, and a method of forming the same. The body is formed by heating to a selected temperature within a...
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3903225 |
Production of beta alumina ceramic
In producing beta alumina ceramic by compressing and sintering powder of the appropriate composition or mixture, the material after sintering is subjected to heat treatment at a temperature between...
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3896197 |
Method of making synthetic resin surface covering including use of two heat transfer modes
A method for making a fabricless surface covering from particles of synthetic resin utilizes an oven assembly having a plurality of heating units which are automatically and/or manually adjustable...
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3873667 |
Process for preparing articles fabricated from polyolefin/polyamide blends having low permeability to gases
The gas permeability of shaped articles fabricated from polyolefin/linear polyamide blends is decreased by heating the article at a temperature of 140°-250°F for 0.1 to 30 minutes.
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3873664 |
Heat treatment of polyester rolls
A process for improving the quality of a thermoplastic, preferably a polyethylene terephthalate film. Slit rolls of polyethylene terephthalate film are exposed to an environment maintained at a...
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3864444 |
Method of producing a foamed polystyrene sheet having a density gradient decreasing from the external surfaces inwardly
Polystyrene foam is extruded upwardly as a tube into a cooling media of boiling water, both the interior and exterior surfaces of the cylindrically shaped extrudate passing through a bath of...
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3846379 |
POLYAMIDE SHOCK ABSORBER PISTON FROM TEREPHTHALIC ACID AND BRANCHED DIAMINE
A shock absorber piston especially suitable for use in automobiles and like vehicles wherein the piston is in contact with a damping fluid and is subject to repeated stresses under varying degrees...
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3800022 |
PROCESS FOR THE PRODUCTION OF NEW ORIENTED FILM AND TAPES
Processes for the production of uniaxially drawn films and tapes of polyethylene-1:2-diphenoxy-4:4'-dicarboxylate in which the film or tape is first crystallised by heating to 80°-220°C and then...
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3769135 |
BASE SEALER METHOD
Method for sealing vent openings in the bottom of plastic base elements of composite containers. A series of heated sealing tips are linked together into an endless chain and driven along an...
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3761556 |
THE MANUFACTURE OF BULKED YARN
A process for producing a bulked nylon 6.6 filament yarn by the steps of continuously spinning, drawing and crimping in which the filaments, after melt spinning are subjected to a two-stage...
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3760056 |
METHOD FOR CUSTOM FITTING AN INFLATABLE BLADDER TO A WEARER'S FOOT
An improved method for custom fitting an inflatable bladder (e.g., for ski boots or the like) to a portion of a person's anatomy (e.g., a wearer's foot). The inflatable bladder is made of a...
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3718722 |
A METHOD OF FORMING A POROUS CELLULOSE ACETATE MEMBRANE
In the method of preparing a porous membrane adapted to separate a solute from a solution comprising: (a) dissolving a film-forming cellulosic ester in a solvent for said ester, (b) casting the...
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3679791 |
PROCESS FOR SHRINKING FILM
Heat-treating oriented film by feeding it to at least one matt surfaced rotating roll which is maintained at a temperature at which the film will shrink but below the melting point of the film and...
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3679786 |
METHOD AND APPARATUS FOR MELT SPINNING OF SYNTHETIC FILAMENTS
In melt spinning of synthetic filaments, a stream of gaseous fluid is withdrawn from a region adjacent the entrance to the conditioner tube so as to substantially eliminate undesired turbulence in...
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3678141 |
PROCESS FOR COLORING EPOXY PLASTIC EYEGLASS FRAMES AND PARTS THEREOF
A process for coloring epoxy plastic resins for eyeglass frames and parts thereof adds dyes or pigments to one or more of the liquid resin precursors or the liquid hardeners immediately prior to...
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3676541 |
CENTRIFUGAL CASTING METHOD
This invention relates to a method of making mortar or concrete pipes by centrifugal casting. The method is characterized by using mortar or concrete prepared from a cementiteous material...
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3673292 |
PROCESS FOR THE PREPARATION OF GAS PERMEABLE HYDROPHOBIC FOILS FOR ELECTROCHEMICAL CELLS
Gas permeable hydrophobic foils useful for electrochemical cells prepared by covering a temperature resistant hot plate or mold with a temperature resistant release layer, spraying a suspension or...
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3662440 |
PROCESS FOR CONTROLLING YARN TENSION AND THREADLINE STABILITY DURING HIGH SPEED HEAT TREATING OF THE YARN
A process for heat treating yarn that includes the steps of feeding the yarn into a stream of heated gas, causing the gas to convey the yarn in a first path while heating it, and subsequently...
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3655480 |
HEATING PARISON PREFORMS IN LIQUID FLUORINATED ORGANIC COMPOUND
Parison preforms are heated to orientation temperature in a liquid fluorinated organic compound bath. The thus heated parisons can be sealed, stretched and blow molded to give oriented hollow...
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3624196 |
STABILIZATION OF ACRYLONITRILE FIBERS TO HOT-WET CREEP
A process is provided for improving the dimensional stability under hot-wet conditions of fibers prepared from acrylonitrile polymers containing at least 95 percent acrylonitrile wherein spun...
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3607500 |
A MOLDING FIBROUS WEBS
Expanded, nonwoven fibrous articles are formed by heating in a shaped mold compressed fibrous webs impregnated with a thermoplastic resin binder. The compressed webs may be economically shipped and...
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3551548 |
METHOD FOR SPINNING POLYAMIDE YARN OF INCREASED RELATIVE VISCOSITY
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3547748 |
MANUFACTURE OF IMPROVED POLYESTER FILMS
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3548048 |
METHOD OF PRODUCING POLYMERIC ARTICLES RESISTANT TO FIBRILLATION
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3542911 |
METHOD OF MAKING A CONTINUOUS ROW OF SLIDE FASTENER LINKS FROM A PLASTIC THREAD
Each half of a slide fastener having two halves adapted to be sewn onto a carrier ribbon has a plastic thread formed into a series of helical loops defining convolution portions. Each convolution...
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3523151 |
ULTRA-STABLE POLYMERS OF BBB TYPE,ARTICLES SUCH AS FIBERS MADE THEREFROM,AND HIGH TEMPERATURE PROCESS FOR FORMING SUCH POLYMERS AND ARTICLES
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3508553 |
SURGICAL VEIN STRIPPING INSTRUMENT FOR PHLEBECTOMIES
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3505435 |
METHOD OF MANUFACTURING A PARTIALLY FOAMED,FOAMABLE THERMOPLASTIC CONTAINER
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3505439 |
MANUFACTURE OF CALCIUM SILICATE HYDRATE PRODUCTS
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3504078 |
MELT SPINNING PROCESS
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3499069 |
METHOD OF MAKING BRICKS
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3499074 |
METHOD OF MAKING AMYLOSTIC FILAMENTS AND FIBERS
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3492385 |
PROCESS FOR ACCELERATING THE INITIAL HARDENING OF ELEMENTS FORMED OF A MIXTURE OF CEMENT OR OTHER LIME-CONTAINING HYDRAULIC BINDER AND ORGANIC OR INORGANIC AGGREGATES THEREFOR
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3491174 |
METHOD FOR MAKING INTEGRALLY COLORED ASBESTOS-CEMENT PRODUCTS
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3489601 |
POLYOLEFINS COATED WITH CHLORINE CONTAINING POLYMERS
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3489832 |
CONTINUOUS SPINNING AND DRAWING OF POLYCAPROAMIDE YARN
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3488411 |
PRODUCTION OF LOW DENSITY THIN GAUGE PLASTIC ARTICLES
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3485903 |
PROCESS OF MAKING A SPONGEOUS TRANSFER MEDIUM
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3480507 |
PROCESS FOR THE PREPARATION OF FIBROUS,FILAMENTOUS PRODUCTS AND THE RESULTANT PRODUCT
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3479426 |
PROCESS FOR MAKING ISOTROPIC POLYMERIC FILM
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3477493 |
METHOD OF MAKING A REFRACTORY HOT TOP PANEL INSERT
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3463846 |
METHOD FOR THE PRODUCTION OF ACRYLONITRILE COMPOSITE FIBERS
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3459445 |
PIPE FITTING AND METHOD OF MANUFACTURE
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3446886 |
PROCESS FOR TREATING LINEAR POLYESTERS TO MODIFY THE SURFACE APPEARANCE AND CHARACTERISTICS THEREOF
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3445561 |
PROCESS FOR PRODUCING POLYCARBONATE FILMS AND PRODUCT THEREOF
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3426117 |
METHOD FOR TREATING ACRYLIC COMPOSITE FIBER
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3418412 |
Manufacture of pottery ware
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