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WO/1998/055284A1 |
Plant for a dehumidification process of granules, particularly of plastic material, to be subsequently used in the molding processes, comprising two means for the dehumidification of the air to be inlet inside of a process hopper provide...
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WO/1998/052729A1 |
A multi-layer preform (90), includes: a) a plastic inner liner (10), comprised of a cylindrical walled body, which may or may not include a tapered annular shoulder portion, and a cylindrical walled neck portion extending upwardly from t...
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WO/1998/051477A1 |
Method for producing a shaped body, which method comprises the following steps: (1) applying a layer of pulverulent material to a surface, (2) patternwise applying at least one liquid to the layer of pulverulent material, forming a layer...
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WO/1998/051462A1 |
Methods for pre-shaping paint film laminates and co-molding processes using such laminates are disclosed. The methods comprise the steps of providing a plastic film laminate, softening the paint film laminate with heat such that one or m...
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WO/1998/050218A1 |
A method for fabrication of a circuit board laminate (10) in a continuous process employs an extruded laminate core (12). Streams of a fibrous material, microspheres or fused silica, a catalyst and a thermosetting resin are added to an e...
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WO/1998/046410A1 |
A plastic article having a crystallized portion and an amorphous portion is formed. The article is produced by injecting molten plastic into a mold cavity (22) of preform mold (10). The hot plastic within the mold cavity is quickly coole...
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WO/1998/045022A1 |
The invention relates to a filter device, in particular for filtering melt-type fluids, such as polymer melts, comprising at least one filter disk (10) having two filter disk halves (12, 14) connected to each other by their edges and out...
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WO/1998/040417A1 |
The invention relates to a deodorizing apparatus, wherein a polyolefin granulate is rinsed with a gas mixture consisting of water vapor and air, a gas mixture consisting of water vapor and nitrogen or with pure water vapor. The resulting...
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WO/1998/039148A1 |
The invention relates to a method for replastifying used rubber powder wherein a powder mixture of chemical activators is produced and subjected to a mechanochemical treatment. Said method improves bonding and co-vulcanization of the mix...
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WO/1998/028125A1 |
The invention relates to a method for producing reactive plastic molded bodies with highly filled coarse-grained filling material, wherein the coarse-grained filling material is heated at a high temperature before being poured into the m...
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WO/1998/026908A1 |
Controlling viscosity of molten polymers, such as polycarbonate, prior to a molding operation such as injection molding, extrusion, thermoforming or blow molding, involves a reduction of viscosity in the plastic melt at constant temperat...
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WO/1998/018847A1 |
A process is disclosed for the crystallization of a PEN prepolymer containing volatile components. The temperature is maintained at a temperature in the range of about 20 �C above the Tg and about 10�C below the Tm while the PEN prep...
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WO/1998/016258A1 |
A method for improving the wear resistance of an implant by cross-linking its bearing surface layer, while leaving its non-bearing interior uncross-linked. Such cross-linking may be achieved by electron-beam irradiation or by chemical cr...
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WO/1998/014495A1 |
Enhanced isocyanates can be obtained by making at least one isocyanate react with at least one polyethylene oxide polyether alcohol and at least one compound having formula (I) wherein the indices and substituents have the meaning given ...
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WO/1998/014314A1 |
Polymer processing systems and methods which use microwave energy to achieve extremely rapid, efficient melting and/or softening of polymer materials. After rapid melting and/or softening is achieved, the molten polymer may then be press...
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WO/1998/013182A1 |
The invention concerns a method for treating plastic tubes, in particular PVC tubes, obtained by extrusion, whereby a tube is brought to a molecular orientation temperature, higher than room temperature, and is subjected to a bi-axial dr...
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WO/1998/013412A1 |
A process is disclosed for producing thermoplastics modified to be impact-resistant or polymer blends containing such modified thermoplastics. The thermoplastics or polymer blends contain: (A) 5 to 95 wt % of at least one water-wet elast...
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WO/1998/013132A1 |
In order to enlarge the surface of particles which absorb liquids at least to a limited extent, the particles are exposed to a liquid or to a humid atmosphere containing this liquid at least until said liquid has penetrated into the area...
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WO/1998/009784A1 |
A melt-processable fluoropolymer is melt kneaded by means of a kneader having a residence time of not less than 10 min, an available volume ratio (available space in container/space in container) of more than 0.3, and a power coefficient...
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WO/1997/049543A1 |
Non-planar thermoplastic article having a flexible portion suitable for use in an aggressive chemical environment, where the flexible portion is an irradiated thermoplastic consisting of polyethylene, ethylene methyl acrylate, ethylene e...
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WO/1997/047449A1 |
A blower nozzle, especially for heating or cooling web-like materials, especially plastic foil webs, comprises at least one distribution chamber (11) and often a supply chamber (7). In the improvement, between the supply chamber (7) and ...
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WO/1997/041750A1 |
The invention utilizes forced air heating in which heated air is fed through tubes (40) to a mold or form (20) shaped substantially like a human foot. The mold or form (20) has apertures or holes (25) which are patterned to provide heat ...
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WO/1997/042016A1 |
To reclaim plastic materials from mixture of plastics which have been collected in bags and are to be melted down in fractions and discharged separately, the bags are placed into a feeding channel (14) where they are perforated; from the...
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WO/1997/042014A1 |
The invention concerns a device for heating plastics profile sections, in particular for heating PVC profile sections (35), the device comprising a box for holding the profile section. Said box has a support plate (3), side panels and a ...
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WO/1997/041290A2 |
There is provided an improved centrifugal dryer (10) that includes a motor section (16) or portion, a dryer section (14) or portion disposed therebelow, and a reservoir section (12) or portion disposed below the dryer portion, the dryer ...
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WO/1997/039877A1 |
A method for processing a tube equipped with an inward flange portion in a hole formed at an end portion of a thin tube from a thin tube made of a thermoplastic resin, and an apparatus used in this method. The thin tube is fitted to a tu...
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WO/1997/037184A1 |
The invention concerns devices for heat-treating bulk materials to suit specific purposes. According to the invention, the devices take the form of feed screws with heat-radiation sources for supplying the thermal energy. The invention f...
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WO/1997/036731A1 |
Comtaminants are removed from RPET flakes by a process which includes the steps of comminuting the RPET flakes to produce RPET particles and driving the contaminants out from the RPET particles.
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WO/1997/033945A1 |
Methods for preparing viscoelastic compositions (for exemple, adhesives such as hot melt adhesives) in which a pre-viscoelastic composition (for exemple, a pre-adhesive composition) is combined with a packaging material and then polymeri...
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WO/1997/033733A1 |
A method for making a biodegradable substitute for materials such as polystyrene or polyethylene or polyurethane foam with a view to producing industrial parts that are particularly suitable for packaging, is disclosed. The method compri...
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WO/1997/033739A1 |
The method comprises the successive steps of: placing a support in an end section of the pipe, heating the pipe in the region of the end section; deforming the pipe to produce a socket in the region of the heated end section; the heated ...
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WO/1997/028955A2 |
A three-dimensional article making apparatus (30) includes a build material dispenser (39) for dispensing build material based upon the article defining data, and a deviation sensor for sensing a deviation during construction of the arti...
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WO/1997/024219A1 |
A thin-walled shoulder of a tubular container is formed without changing the appearance and shape of the tubular container, and enhancing the work efficiency when the neck and the body of the tubular container are integrally molded. A me...
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WO/1997/019804A1 |
The invention relates to an apparatus and a method for extending a preform (2) of plastic material in the axial direction of the preform. A first retainer device (11) and a second retainer device (12) are provided for fixedly retaining b...
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WO/1997/012378A1 |
Circuit protection devices comprising PTC elements and circuits containing such devices. The PTC element includes a crystalline conductive polymer composition comprising a conductive particulate filler grafted to a modified polyolefin. T...
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WO/1997/007969A1 |
A method of providing a bent tube made of a heat sensitive e.g. thermoplastics material includes the step of causing the circumferential wall of the tube (2) to be selectively heated, such as by high frequency excitation, whereby the par...
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WO/1996/041713A1 |
A process and apparatus (10) for laser treating discrete sheets of material includes passing shingled sheets (18) through a shingle transfer (14) to be treated by a laser system (20). The laser system (20) includes a two axis laser galvo...
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WO/1996/037353A1 |
A process for producing a styrenic resin which comprises granulating a powdered syndiotactic styrenic polymer by the use of a vented extruder having one or more vents each having an internal pressure of 0 to 760 Torr at a molding tempera...
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WO/1996/036470A1 |
An apparatus for solid state shear extrusion pulverization of a polymeric material comprising an elongated hollow barrel having a feed zone, a heating zone adjacent to the feed zone, a powder formation zone adjacent to the heating zone, ...
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WO/1996/036661A1 |
The present invention is for a method for production of products from porous polymer materials and a device for practicing the method. The purpose of the present invention is to treat recycled or fresh material so that it is sterilized a...
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WO/1996/036471A1 |
A process and apparatus for single screw solid state shear extrusion pulverization of polymeric materials in which the polymeric materials are heated to a temperature suitable for forming a continuous thin film of said polymeric material...
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WO/1996/036464A1 |
Coarse fragmentation device for an aqueous polymer gel has two axially parallel rollers (11, 12) that rotate in opposite directions and define an intermediate roll slit (13) through which the polymer gel (10) can flow. In order to reduce...
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WO/1996/034725A1 |
An apparatus for the cutting and creasing of plastics material sheet is disclosed which comprises a cutting and creasing tool (12) and a corresponding plate (10) arranged for mutual contact characterised in that the plate (10) is free of...
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WO/1996/032244A1 |
The present invention is related to deep-drawing apparatus for the fabrication of polymer products, said apparatus comprising a framework (1), heater elements (2) mounted to said framework in an infeed/heating arrangement for a polymer s...
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WO/1996/030434A2 |
The invention provides a process for the manufacture of an additive concentrate which comprises particles of size from 5 microns to 10 mm and a binder including the steps of: (a) mixing the particles and the binder in the dry state; (b) ...
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WO/1996/029193A1 |
A method and apparatus for densifying a thermoplastic polymer are disclosed. Particles (54) of a thermoplastic polymer are introduced into a chamber (20), suspended with a fluid flow in the chamber, and while suspended, the particles are...
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WO/1996/022867A1 |
The invention is concerned with devices for controlling the temperature, as required, of plastics in a mixture flow to achieve relaxation or softening. According to the invention, the devices are in the form of screw conveyors with therm...
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WO/1996/020074A1 |
Method of making multilayer preforms which resist delamination and in a reduced cycle time. A first array of preforms are molded onto a first array of cores in an associated array of mold cavities, the cores and preforms are removed from...
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WO/1996/018483A1 |
A pelletizer particularly useful for pelletizing water-dispersible melt-extrudate, among other materials, delivered from an extruder through a die positioned in communication with the interior of the pelletizer housing. The pelletizer in...
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WO/1996/018493A1 |
Method and apparatus for re-forming walled thermoplastics members including pipe (12) as re-lining of worn-out pipeline (20) by heating (14) to soften throughout wall thickness without melting, and re-sizing/re-shaping by fluid pressure ...
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