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WO/1992/016352 |
A constraining structure for an open tube apparatus for continuously producing a rotating elongate strip of material is disclosed. The constraining structure controls expansion of an extruded blown film tube to a desired outer diameter r...
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WO/1992/016359 |
An open tube apparatus (10) and method for continuously producing a rotating elongate strip (12) of material are disclosed. An extrusion die (14) continuously extrudes flowable material to form an open tube (16) with a central longitudin...
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WO/1992/009842 |
A joint by electric welding includes a main body, in the proximity of the joining surface of which a magnetic alloy material continuing in its axial direction is embedded. In the part to form a cold zone on the outer surface of the main ...
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WO/1992/001885 |
A composite pipe is described, comprising a thermoplastic inner pipe and one or more layers of strip material wound around the inner pipe, which are connected to each other and/or to the inner pipe (1) only over a part of the length of t...
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WO/1992/000481 |
A flexible tubular pipe (1) comprises, from the inside outwards, an inner sealing tube or sleeve (3) and an armouring consisting of a plurality of armouring webs. The armouring comprises a first armouring web (4) supporting the inner sea...
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WO/1991/019924 |
A flexible tubular duct is provided which comprises a sealing sleeve or a polyolefin tube. The sealing sleeve or tube (12) is made of hydrolytically cross-linked polyolefin, particularly hydrolytically cross-linked polyethylene.
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WO/1991/018750 |
A dispenser (10) for depositing a liquid correction fluid onto a print medium is formed of an elongated tubular body (12) having a valve means (18) at one end and closed at the opposite end (19) for retaining the fluid therein. Improved ...
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WO/1991/015350 |
In a process for manufacturing tubes from a prefabricated pipe body, heated plastic blanks are pressed to form a multilayer tube head which is connected to the pipe body at the same time. According to the invention, each layer of the mul...
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WO/1991/015349 |
The invention relates to a device for manufacturing tubes from prefabricated pipe bodies by pressing a heated plastic blank (24) to form a tube head which is connected to the tube pipe (13) at the same time. The device has a step-by-step...
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WO/1991/011319 |
A pressure vessel made of a composite material according to the present invention is constituted of an inner tube (2) formed of a fiber-reinforced resin material, a rigid attaching member (10 or 30) which is fit into at least one of the ...
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WO/1991/011012 |
A cable assembly includes a force-transmitting inner core member (1), and an outer flexible synthetic plastic sleeve member (2) including an annular inner portion (4) containing a bore (6) having a smooth wall surface and within which th...
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WO/1991/009085 |
This invention relates to a vinyl chloride resin composition comprising as the main components 100 parts by weight of a vinyl chloride resin composed of 8 to 90 % by weight of a tetrahydrofuran-insoluble gel and the balance of tetrahydro...
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WO/1991/008891 |
A lubricating arrangement for a plastic extruder (1) for production of cylindrical plastic tubes with a smooth inner surface, said plastic extruder (1) comprising a mendrel which consists of a die core (6) which is a cylindrical coaxial ...
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WO/1991/007281 |
A method of providing a finish to an article (10) containing resin wherein an overlay (12) of sheet material that is impregnated with thermosetting resin -- typically a fabric of a type including metallic, synthetic fiber, natural fiber ...
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WO/1991/004845 |
A welding muff comprises a thermoplastic, tubular muff body (1) which has a heating wire winding on its inner surface. A reinforcing layer connected to the muff body (1) by interpenetration of the material or by interlocking has a high r...
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WO/1991/003370 |
A flexible hose construction and method of making the same are provided, the flexible hose construction (20) comprising: an inner corrugated hose (21) made of polymeric material and having a plurality of outwardly convex projections (22)...
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WO/1991/001213 |
The invention concerns a procedure for the manufacture of an assembled object intended for repeated assembling and disassembling, e.g. a tube (1) with matching cap (4), and a machine for the execution of this procedure. According to the ...
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WO/1991/001220 |
This invention relates to a composite tubular article used as a belt which is suitable for fixation on an image forming apparatus such as a duplicating machine, particularly for heat fixation, and to its production method. Conventionally...
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WO/1991/000803 |
A nested fiberglass structure (10) comprises a plurality of strips (66) each in the shape of a sinusoidal wave (20). The waves (20) have peaks (22) and valleys (24) which have equal amplitude about a central axis (26). A positioning stri...
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WO/1991/000797 |
This invention relates to an apparatus for manufacturing ribbed pipes. The central axis of the apparatus has a core (8, 9, 10) about which a material in a plastic state is extruded through a nozzle (11). The end of the core has a kernel ...
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WO/1991/000466 |
Composite plastic pipe, characterized in that it principally consists in the combination of an extruded pipe in thermoplastic synthetic material and a pultruded pipe or pipe obtained by pull winding in thermoplastic or preferably thermo-...
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WO/1990/014055 |
A longitudinally compliant PTFE graft (20) is provided by compressing at least a portion of a porous PTFE tube (32) along its longitudinal axis (22) and coating at least the outer wall of the compressed portion of the PTFE tube (32) with...
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WO/1990/011175 |
The present invention provides that fibrous material and resin are brought together into a mass which is handleable and subsequently is formed into a tubular structure making it usable in soft-lining process for underground pipelines or ...
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WO/1990/011468 |
The method provides that a lining tube impregnated with synthetic resin is applied to the inner surface of a pipeline or passageway to line same. A pre-lining tube (12) is either connected to the leading end of the lining tube (14) so th...
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WO/1990/009272 |
A method for producing a hollow article of a fiber-reinforced thermoplastic resin, wherein a prepreg comprising a thermoplastic resin as the matrix is placed between a thermally expansive core and an outer die surrounding the core.
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WO/1990/006859 |
Vehicle inner tubes are formed with walls comprising thermoplastic elastomeric polymer compositions containing semi-crystalline ethylene copolymer such as ethylene vinyl acetate, and vulcanized butyl or halogenated butyl rubber particles.
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WO/1990/004128 |
A composite hose comprising an inner helical core (1) made of metal, a plurality of layers of plastics material fibres and films (2, 2a, 2b, 2c) wound on the helical core (1), at least one layer of glass cloth (3) and at least one layer ...
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WO/1990/002649 |
Described is a biaxially stretched pipe (1) of foamed plastic material. The pipe (1) may have on the inside and outside a continuous smooth structure such as layers (3; 4). Layer (3; 4) may be composed of the same plastic as the pipe or ...
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WO/1990/002648 |
Described is a plastic pipe (1) such as a pipe having a transverse ribs (22) or a pipe having longitudinal channels (3) which is stretched in axial and/or longitudinal direction in order to enhance the mechanical properties thereof. Also...
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WO/1990/001406 |
A catheter or reinforced tubular product is formed in a single extrusion step. A mandrel (34) is passed through an extruder to deposit a sheath (36) on the mandrel (34). The sheath (36) or tube is about equal to the outside diameter of t...
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WO/1990/001407 |
A method and apparatus for producing flexible tubes of any length from several superposed strips (12) of rubber and/or rubber reinforced with textile and/or metal fibres. The apparatus comprises a wrapping machine (1) and a vulcanizer (2...
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WO/1990/000696 |
Described is the use of a tube of plastics on the basis of a vinylchloride polymer whereby the tube has been given a ductile fracture behaviour in the test for establishing the fracture toughness thereof. The ductile fracture behaviour i...
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WO/1990/000113 |
This invention relates to a production method and apparatus of a rubber tube. An object of the present invention is to provide an efficient production method and apparatus for a rubber tube having a smooth outer surface and this object c...
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WO/1989/008545 |
A method for the manufacture of a tubular article such as a component for deformation into the shape of a pneumatic tyre utilises a flexible carrier (15) for transfer and deformation of sheet material (9) to extend in a tubular form betw...
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WO/1989/007516 |
The above process involves heating the thermoplastic, forming a blank by means of a possibly annular nozzle and separation thereof by possible use of a heated gas stream surrounding the nozzle and oriented towards the point of separation...
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WO/1989/004757 |
A method of making a repeatedly inflatable and deflatable structure is disclosed wherein an inner envelope (3) of gas impermeable material is at least partially surrounded by a shell (1) of reinforcing material, and adhesive (15/15a) is ...
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WO/1989/002361 |
When tubular bodies are to be used in telescopic hydraulic systems, strict requirements as to surface smoothness and accurate dimensions are made. Such a tubular body of fiber reinforced plastic material may be made from a tubular blank ...
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WO/1989/000917 |
A fibre reinforced tube element and a method for its manufacture, provided with a wall constructed of a reinforcement layer (2) helically and partially overlappingly wound around a longitudinal axis of the tube element (1), which layer c...
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WO/1988/006089 |
For continuous manufacture, by extrusion, of a tube provided with spiral threads, a single traction device (6) is used. This device includes two prehensile devices (26) supported rotationally, with respect to the axis of the tube blank e...
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WO/1988/000668 |
Polyethylene pipe with integrated electric resistance thermowelding system, including a substantially cylindrical socket (3) at one of its ends and a wire coil resistor (4) housed therein, the axial length of which does not exceed that o...
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WO/1988/000129 |
The method of and means for reinforcing a structure formed by interengaging the edges of ribbed strip means (1) formed of a plastics material to form a helically wound tube or a panel, the strip means (1) comprising a plurality of ribs (...
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WO/1987/005257 |
A method of making annular polymer articles provides for placing a blank on a cylindrical forming surface, dividing it, along the perimeter, into even and odd sections and pressing the blank in two stages, during the first of which the e...
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WO/1987/004113 |
The apparatus comprises a core (8, 9, 10) positioned on the central axis thereof and around which a plasticized material is pressed from anozzle (11). A kernel (10) having a substantially constant diameter is positioned at the terminal e...
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WO/1987/001650 |
A base layer (12) of fabric sheets impregnated with bonding material is deposited on a mold form (20). A plurality of parallel spaced hollow cores (22), fabricated from memory metal alloy, are positioned on the base layer (12). An overly...
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WO/1987/001069 |
Structural tubular element (1) made of curable resin-coated resistant fibres and intended to form a part of a structure. According to the invention, said tubular element is characterized in that it comprises an internal axial wall (4) wh...
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WO/1986/006578 |
The hose for the irrigation of plants comprises an inner pipe (1) provided with perforations (5) of substantially circular cross-section, at the outer surface of which are arranged one or a plurality of layers (2a, 2b) of fibrous materia...
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WO/1986/005440 |
The cross-linked plastic material is shaped in a softened state (e.g., through blow-moulding, deep-drawing, pressing, rolling, calendering or stretching) and cooled to below the softening range, retaining the shape thus obtained.
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WO/1986/005570 |
Method in manufacturing a heat insulated tube comprising a tube (17) for conducting fluid and a sheath (12) enclosing said tube, a heat insulating material (15) being disposed between the fluid tube and the sheath. The sheath is being ex...
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WO/1986/002883 |
Layered fabric (5), substantially liquid impervious, comprising a filamentary substrate layer (3), and outer plastics layer (4) being preferably extrusion melt coated low density polyethylene (LDPE) and a separately extruded inner plasti...
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WO/1986/002037 |
Bellows rubber hose having all the outer peripheral surface thereof constituted by a smooth surface and a method of manufacturing the bellows rubber hose. A typical conventional bellows rubber hose can be manufactured only by a split-mol...
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