Abrégé

Internal components of plasma reactors are composed of a toleratable, ceramic filled plasma-useful polymer such as a high temperature engineering thermoplastic, preferably a polyamideimide or polybenzimidazole. The parts exhibit a low erosion rate upon exposure to plasma at low pressure.

Classes IPC  ?

• C23C 16/00 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD]
• C23F 1/00 - Décapage de matériaux métalliques par des moyens chimiques
• H01L 21/306 - Traitement chimique ou électrique, p. ex. gravure électrolytique
• H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
• H01J 37/32 - Tubes à décharge en atmosphère gazeuse
• C08G 73/14 - Polyamide-imides
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide-acides ou précurseurs similaires de polyimides
• C08L 71/00 - Compositions contenant des polyéthers obtenus par des réactions créant une liaison éther dans la chaîne principaleCompositions contenant des dérivés de tels polymères
• C08L 81/02 - Polythio-éthersPolythioéther-polyéthers
• C08L 81/06 - PolysulfonesPolyéthersulfones

Abrégé

Internal components of plasma reactors are composed of a toleratable, ceramic filled plasma-useful polymer such as a high temperature engineering thermoplastic, preferably a polyamideimide or polybenzimidazole. The parts exhibit a low erosion rate upon exposure to plasma at low pressure.

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse

Abrégé

A method of manufacturing a composite gear blank comprises placing a rigid centerpiece (2) in a non-rotating mold (10, 12, 28), inertizing the mold, adding a liquid reactive mixture (M) until filling up the mold around the centerpiece, applying a static pressure to the filled up mold and allowing polymerization of the reactive mixture so as to form a plastic outer part surrounding the centerpiece. The composite gear blanks thus made have improved values of normal and shear adhesion strength both at room temperature and at elevated temperatures of up to 12O°C and are particularly suited for making worm gear parts of automotive electronic power steering systems.

Classes IPC  ?

• B29D 15/00 - Fabrication de roues d'engrenages ou d'objets similaires comportant des creux ou des saillies, p. ex. boutons de réglage
• B29C 37/00 - Éléments constitutifs, détails, accessoires ou opérations auxiliaires non couverts par le groupe ou
• B29C 39/10 - Moulage par coulée, c.-à-d. en introduisant la matière à mouler dans un moule ou entre des surfaces enveloppantes sans pression significative de moulageAppareils à cet effet pour la fabrication d'objets de longueur définie, c.-à-d. d'objets séparés en incorporant des parties ou des couches préformées, p. ex. coulée autour d'inserts ou sur des objets à recouvrir

Abrégé

A lining laminate for corrosive media, particularly for hydrofluoric acid, comprises a sealing layer (2) made of a fluoropolymer and a lamination (4) that is applied onto one side of the sealing layer, said lamination comprising a knitted fabric which is partially embedded into the sealing layer and which partially protrudes. The knitted fabric is made from fully fluorinated polymer, in particular PTFE. In a method for producing the lining laminate, appropriate webs of the fluoropolymer and of the knitted fabric are continuously pressed together at temperatures above the softening range of the fluoropolymer.

Classes IPC  ?

• B32B 27/12 - Produits stratifiés composés essentiellement de résine synthétique adjacente à une couche fibreuse ou filamenteuse
• B65D 90/02 - Structure des parois
• B65D 90/04 - Garnitures internes

Produits et services

(1) Engineering plastics for industrial use, namely extruded shaped plastic pieces made from polyoxymethelene for industrial processing.

Abrégé

Wide panels of UHMWPE having exceptional flatness and surface quality are ram extruded through a slit die equipped with a plurality of individually adjustable cooling zones proximate the panel exit slit and transverse to the machine direction which cool the by a back pressure device and preferably a vertical movement restraint. The process is robust and can be run for long product campaigns.

Classes IPC  ?

• B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)

Abrégé

UHMWPE panels of large width may be prepared by a continuous ram extrusion process by employing a slit die which preferably narrows from both sides in a direction transverse to the machine direction, and/or which employs a plurality of transversely positioned cooling zones located on the top and the bottom of the die, proximate the exit thereof. The panel exits the die at a temperature lower than the crystalline melt temperature.

Classes IPC  ?

• B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)

Abrégé

UHMWPE panels of large width may be prepared by a continuous ram extrusion process by employing a slit die which preferably narrows from both sides in a direction transverse to the machine direction, and/or which employs a plurality of transversely positioned cooling zones located on the top and the bottom of the die, proximate the exit thereof. The panel exits the die at a temperature lower than the crystalline melt temperature.

Classes IPC  ?

• B32B 3/30 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche continue dont le périmètre de la section droite a une allure particulièreProduits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche comportant des cavités ou des vides internes caractérisés par une couche comportant des retraits ou des saillies, p. ex. des gorges, des nervures

Abrégé

UHMWPE panels of large width may be ram extruded from a slit die in a stable process, by restraining a panel which exits the die below the crystalline melt temperature against movement away from the die by a back pressure device, so as to exert a back pressure between the back pressure device and the die, the back pressure device preferably constructed of a plurality of differentially adjustable elements so as to be able to compensate for changes in processing characteristics over time. Vertically restraining UHMWPE panels as they further cool also greatly improves product characteristics.

Classes IPC  ?

• B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)
• B29C 47/92 - Mesure, commande ou régulation

Abrégé

UHMWPE panels of large width may be ram extruded from a slit die in a stable process, by restraining a panel which exits the die below the crystalline melt temperature against movement away from the die by a back pressure device, so as to exert a back pressure between the back pressure device and the die, the back pressure device preferably constructed of a plurality of differentially adjustable elements so as to be able to compensate for changes in processing characteristics over time. Vertically restraining UHMWPE panels as they further cool also greatly improves product characteristics.

Classes IPC  ?

• B29C 47/14 - avec une large ouverture, p.ex. pour feuilles
• B29C 47/54 - utilisant des pilons ou des pistons
• B29C 47/86 - dans la zone de la filière
• B29C 47/92 - Mesure, commande ou régulation

Abrégé

UHMWPE panels of large width may be prepared by a continuous ram extrusion process by employing a slit die which preferably narrows from both sides in a direction transverse to the machine direction, and/or which employs a plurality of transversely positioned cooling zones located on the top and the bottom of the die, proximate the exit thereof. The panel exits the die at a temperature lower than the crystalline melt temperature.

Classes IPC  ?

• B29C 47/86 - dans la zone de la filière
• B29C 47/14 - avec une large ouverture, p.ex. pour feuilles
• B29C 47/54 - utilisant des pilons ou des pistons

Produits et services

engineering plastic shapes, namely, extruded or compression-molded plastic in the form of bars, blocks, rods, sheets and tubes for use in manufacturing

Produits et services

engineering plastic shapes, namely, extruded or compression-molded plastic in the form of bars, blocks, rods, sheets and tubes for use in manufacturing

Produits et services

engineering plastic shapes, namely, extruded or compression-molded plastic in the form of bars, blocks, rods, sheets and tubes for use in manufacturing

Produits et services

engineering plastic shapes, namely, extruded or compression-molded plastic in the form of bars, blocks, rods, sheets and tubes for use in manufacturing

Produits et services

(1) Raw and processed plastic products, namely engineering plastics in the form of rod, strip, tube, and customized cast shapes made from nylon.

Produits et services

(1) Synthetic resins, namely polyamide resins, vinyl resins, polyvinyl resins, epoxy resins; (2) Machine elements made from synthetic resins, namely, bearings, bushings, valve seats, washers, seals, cams, gears, sleeves, rollers, wheels, guides, wear plates, liners, insulators, contoured dies, and various types of general structural wear parts. (3) Semi-finished goods made from synthetic resins, namely bars, rods, plates, strips, spheres and other complex shapes

Produits et services

(1) Filled polytetrafluoroethylene resins.