101 |
Synthetic resinous tube |
US418204 |
1973-11-23 |
US4101699A |
1978-07-18 |
Clifford R. Stine; Jennings A. Boyce |
A synthetic resinous tube having a plurality of bonded coaxial layers with at least one layer being thermoplastic and another substantially non-thermoplastic is formed by the simultaneous coaxial extrusion of thermoplastic tubes and electron irradiation of one of the layers of the tube to convert it from a thermoplastic resin. |
102 |
Wire coating using a liquid polymer |
US728345 |
1976-09-30 |
US4098861A |
1978-07-04 |
Giovanni Bassani |
In accordance with a preferred embodiment of this invention there is provided a method and apparatus for coating a wire or cable with a thermosetting polymer formed from a "liquid polymer" system such as a two-component polysiloxane. This system may be characterized as having two components each having a low viscosity and which when mixed react quickly to form the cross-linked polysiloxane rubber. |
103 |
Process for preparing impact resistant styrene polymers |
US590571 |
1975-06-26 |
US4007234A |
1977-02-08 |
Horst-Dieter Schuddemage; Horst Jastrow; Harry Barth |
There is disclosed a process for preparing impact resistant styrene graft copolymers having improved properties, especially a high gloss. They are obtained by polymerizing a solution of an ethylene/propylentercomponent rubber in a mixture of styrene and acrylonitrile in one step (mass polymerization) or two steps (mass/suspension polymerization) in the presence of an organic peroxide and submitting the polymer to a two step extrusion, the first step being carried out at temperatures of from 130.degree. to 240.degree. C, the second step at temperatures of from 200.degree. to 280.degree. C, and providing that during the second extrusion step a quantity of about 0.05 to about 0.5% by weight of the organic peroxide is still present. |
104 |
Process of continuously blending, molding and curing heat curable
polymeric compounds |
US426964 |
1973-12-20 |
US3979488A |
1976-09-07 |
Milton Sharples Greenhalgh; Ray Clarence Lever |
A process of increasing the output and other efficiencies and benefits in continuous extrusion manufacturing operations, including blending and plasticizing, molding to shape and curing heat curable polymeric compounds to a thermostat condition. The process comprises the continuous coincidental mixing and heating of heat curable polymeric compounds, raising the temperature thereof up to substantially the level of their curing temperatures, and the consecutive forming to shape and curing of the shaped polymeric compounds to a thermostat condition. The process is primarily carried out within an extruder or equivalent continuous forming apparatus, and any additional heat needed to achieve or accelerate the attainment of curing temperatures, or to complete the conversion to a cured thermoset condition of the polymeric compounds can be readily applied by any external source of heat. This process is especially suitable and effective in the manufacture of elongated electrical conductors or wires coated or insulated with thermosetting polymeric materials or compositions comprising the same. The invention also includes a novel apparatus for the effective and complete performance of the process. |
105 |
Apparatus for manufacturing polyolefin-insulated cables |
US50183474 |
1974-08-29 |
US3909177A |
1975-09-30 |
TAKAOKA MICHIO; OSHIMA HIROTO; KATSUHARA TOSHIHARU; ONO MOTOYUKI; SANO HIDEO; SEKI MASAICHIRO; HASEGAWA MASAKAZU |
An apparatus for manufacturing hardened polyolefin-insulated cables comprising a hardenable polyolefin-extruding device, a tube partitioned into heating and cooling zones by way of a certain partition area, for example, an area composed of a seal packing, the two zones being filed with circulating silicone oil and constituted of different circulating systems, through which the polyolefin-covered cable core is drawn, and a die provided at the other end of the curing tube and connected to a super-cooling device, where the pressurized oil is super-cooled to increase its density to such extent that the clearance between the outer surface of the cable core and the inner wall surface of the passage in the die is sealed.
|
106 |
Insulated cable with layer of controlled peel strength |
US40656473 |
1973-10-15 |
US3876462A |
1975-04-08 |
CARINI FRANCIS F; ABBOTT STEVEN |
A high voltage electrical cable having at least two layers of cross-linked polyolefin insulation, i.e. polyethylene; the external layer being semi-conductive and strippable from the internal layer. Controlled strippability is accomplished by sulfonating the respective layers at their contact interface.
|
107 |
Production of electrical conductors covered with crosslinked material |
US31555672 |
1972-12-15 |
US3868436A |
1975-02-25 |
OOTSUJI MASAAKI; MATSUI MASATAKE; FUWA MASARU; TAKAHASHI KIYOSHI |
In the production of cables covered with a cross-linked material by feeding a conductor and a cross-linkable material covering the conductor through a long land portion of an extruding die unit, the length and the operational temperature in the land portion being selected so that the cross-linking reaction is substantially completed within the land portion, and cooling the cross-linked material within a cooling device housing a pressurized cooling fluid therein, an improved process within the aforementioned feeding of the conductor is carried out under a braking force counteracting a pull generated along the cable by the pressurized cooling fluid.
|
108 |
Manufacture of insulated electric cables |
US3737490D |
1970-12-09 |
US3737490A |
1973-06-05 |
NICHOLSON P |
A COMPOSITE COVERING COMPRISING AT LEAST TWO LAERS OF DIFFERENT COVERING MATERIALS IS EXTRUDED ON A CONTINUOUSLY ADVANCING CORE BY PASSING THE CORE THROUGH THE CORE TUBE OF AN EXTRUSION MACHINE WHICH FEEDS EXTRUDED, PERIPHERALLY CONTINUOUS LAYERS OF THE COVERING MATERIALS SIMULTANEOUSLY TOWARD THE OUTLET END OF THE EXTRUSION MACHINE AND CAUSING THE EXTRUDED LAYERS TO COME INTO COMPLETE AND INTIMATE INTERFACIAL CONTRACT UPSTREAM OF THE OUTLEN END OF THE EXTRUSION MACHINE. THE COMPOSITE COVERING SO FORMED IS TREATED, E.G. CURED, CONTINUOUSLY BY PASSING THE COVERED CORE THROUGH A CHAMBERHERMETICALLY SEALED TO THE OUTLET END OF THE EXTRUSION MACHINE AND CONTAINING A FLUID MEDIUM AT SUPER-ATMOSPHERIC PRESSURE. AT THE SAME TIME, FLUID UNDER PRESSURE IS INJECTED INTO THE INTERIOR OF THE CORE TUBE AND IS MAINTAINED AT A PRESSURE LESS THAN THAT OF THE FLUID MEDIUM BY AN AMOUNT SUCH THAT THE PRESSURE DIFFERENCE ACROSS THE EXTRUDED COMPOSITE COVERING AT THE EXTRUSION ORIFICE IS SUFFICIENT TO CAUSE THE EXTRUDED COMPOSITE COVERING TO COLLAPSE FIRMLY ON TO THE CORE AS IT EMERGES FROM THE EXTRUSION MACHINE.
|
109 |
Insulated electrical cables and method of making them |
US3725230D |
1971-03-29 |
US3725230A |
1973-04-03 |
BAHDER G; GARNER O; EAGER G |
THIS APPLICATION DISCLOSE INSULATED ELECTRICAL CABLES AND METHOD OF MAKING THEM. THE CABLES CONSIST OF METALLIC CONDUCTORS STRANDED OR SOLID, A SEMI-CONDUCTING SHIELD OVER THE CONDUCTOR, A COMPARATIVELY HEAVY WALL OF INSULATION AND ANOTHER LAYER OF SEMI-CONDUCTING SHIELD WHICH, IF USED IN SUFFICIENT THICKNESS, MAY SERVE BOTH AS A SHIELD AND AN OUTER PROTECTIVE JACKET. THE CABLES ARE IRRADIATED IN A PARTICULAR CONTROLLED MANNER TO IMPROVE DESIRED PHYSICAL CHARACTERISTICS WHILE PRESERVING DESIRED INSULAATING CHARACTERISTICS. THE INVENTION IS PARTICULARLY APPLICABLE TO HIGH VOLTAGE CABLES RATED 5 TO 70 KV. OR ABOVE.
|
110 |
Apparatus for extruding and applying plastic materials |
US3568250D |
1969-04-28 |
US3568250A |
1971-03-09 |
PAYNE LE ROY |
AN EXTRUDER APPARATUS FOR PLASTIC MATERIALS HAVING AN ELONGATED EXTRUSION CHAMBER ON A HOLLOW FEED SCREW MOUNTED WITHIN THE CHAMBER. MATERIAL ENTERS ONE END OF THE CHAMBER THROUGH A HOPPER AND EXITS FROM THE OPPOSITE END OF THE CHAMBER. ADDITIONAL MATERIAL MAY BE PLACED IN THE CHAMBER THROUGH A CHECK VALVE WHICH IS OPERATED BY THE FEED SCREW. THE DIAMETER OF THE FEED SCREW IS SMALLER THAN THE DIAMETER OF THE CHAMBER AT THE ENTRANCE TO THE CHAMBER AND THE FEED SCREW INCREASES IN DIAMETER TOWARD THE EXIT END OF THE CHAMBER. THE EXIT END HAS A DISCHARGE SLOT WHICH IS ALIGNED IN PARALLEL RELATION TO THE LONGITUDINAL AXIS OF THE CHAMBER. THE SLOT INCREASES IN WIDTH IN THE DIRECTION AWAY FROM THE CHAMBER.
|
111 |
Method of making an insulated sodium cable |
US3534132D |
1967-05-09 |
US3534132A |
1970-10-13 |
BAILEY CARL A; ISAACSON RAYMOND E |
|
112 |
Extruding molding compounds |
US3461490D |
1967-01-30 |
US3461490A |
1969-08-19 |
COTTINGHAM ROBERT A |
|
113 |
Method of manufacturing electric wires covered with plastics |
US3455752D |
1965-11-29 |
US3455752A |
1969-07-15 |
GRAY ALVIN N; TAMURA YASUYA; SHIBATA KOJIRO; NAKAYAMA REIKICHI |
|
114 |
Equipment for making plastic articles |
US42724465 |
1965-01-22 |
US3284852A |
1966-11-15 |
BOGGS LE ROY R |
|
115 |
Equipment for making articles composed of fiber reinforced resin materials |
US28826563 |
1963-06-17 |
US3256559A |
1966-06-21 |
BOGGS LE ROY R |
|
116 |
Extrusion process for making propellant grains |
US2664960 |
1960-05-03 |
US3155749A |
1964-11-03 |
ROSSEN JOEL N; RUMBEL KEITH E |
|
117 |
Extrusion of thermosetting polymeric materials |
US84472159 |
1959-10-06 |
US3054142A |
1962-09-18 |
HINDERER ROBERT F; MULLEN JOSEPH A |
|
118 |
Polyethylene containers |
US687360 |
1960-02-05 |
US3033238A |
1962-05-08 |
KOSEWICZ JOHN S |
|
119 |
Thermo-molding apparatus |
US41338354 |
1954-03-01 |
US3002248A |
1961-10-03 |
WILLSON CORWIN D |
|
120 |
Manufacture of pencils and other shaped articles |
US60023656 |
1956-07-26 |
US2988784A |
1961-06-20 |
ZAREH LORENIAN |
|