Coloring solution for dental zirconia ceramics and method for using the same

A coloring solution for dental zirconia ceramics and a method for using the same are provided. The coloring solution consists of coloring agents, a solvent, and an additive. The coloring agents are a combination of two or more rare earth metal compounds, wherein the rare earth metal compounds having rare earth metal ions selected from the group consisting of praseodymium (Pr) ions, erbium (Er) ions, cerium (Ce) ions, and neodymium (Nd) ions. The concentration of the rare earth metal ions in the solution is 0.05˜3 mol/liter solvent. The molar ratio of Pr ions:Er ions:Ce ions:Nd ions in the solution is 1:(10˜50):(0˜20):(0˜30).

Method and device for injection molding of plastic molded parts made of thermoplastic

Die Erfindung betrifft ein Verfahren zum Spritzgießen von Kunststoff-Formteilen aus thermoplastischem Kunststoff, das die Schritte aufweist: a) Herstellen von thermoplastischer Kunststoffschmelze (1) durch Rotation einer Plastifizier- und Einspritzschnecke (2) in einem Schneckenzylinder (3); b) Versetzen der thermoplastischen Kunststoffschmelze (1) mit einem Fluid (4) durch Eingabe des Fluids (4) in den Schneckenzylinder (3); c) Durchmischen der mit Fluid (4) versetzten thermoplastischen Kunststoffschmelze (1) durch Ausführung einer Rotationsbewegung der Plastifizier- und Einspritzschnecke (2); d) Einspritzen des Gemisches aus thermoplastischer Kunststoffschmelze (1) und Fluid (4) in die Kavität (8) eines Spritzgießwerkzeugs (5). Um dieses Verfahren insbesondere für die prozeßsichere und reproduzierbare Herstellung großer, geschäumter Kunststoff-Formteile tauglich zu machen, ist erfindungsgemäß vorgesehen, daß das Einspritzen des Gemisches aus thermoplastischer Kunststoffschmelze (1) und Fluid (4) in die Kavität (8) eines Spritzgießwerkzeugs (5) durch translatorische Verschiebung der Plastifizier- und Einspritzschnecke (2) erfolgt, und daß das Fluid (4) an einer axialen Position (6) in den Schneckenzylinder (3) eingeleitet wird, an der sich zumindest zeitweise die Schneckengänge (7) der Plastifizier- und Einspritzschnecke (2) befinden, und daß während der Eingabe des Fluids (4) in den Schneckenzylinder (3) die Druckdifferenz (Delta p) zwischen dem Druck (p¶F¶) des ... The invention relates to a method for the injection molding of molded plastic parts made of thermoplastic, which comprises the steps of: a) producing thermoplastic melt (1) by rotating a plasticizing and injection screw (2) in a screw cylinder (3); b) placing the thermoplastic melt (1) with a fluid (4) by inputting the fluid (4) into the screw cylinder (3); c) mixing the thermoplastic plastic melt (1) mixed with fluid (4) by executing a rotary movement of the plasticizing and injection screw (2); d) ...

Non-woven netting

A new fast method for making plastic netting without weaving or knitting. This non-woven netting is made by the cohesion of melting plastic monofilaments extruded by a T Die. Under the reciprocating movement of guide rollers, several groups of melting monofilaments are guided to be crossed, and the pressed and welded together on pressure silicone rollers. When necessary, other yarns or filaments can be added to be crossed, pressed and welded together, to increase the tensile strength of the netting. Generally, it is a kind of netting made by crossing one group of melting plastic monofilaments with other groups of melting plastic monofilaments or by other yarns under the pressing and welding process.

Production of foamed 1-olefin polymer articles using an insulated mold

Self-bonded nonwoven web and net-like web composites

A self-bonded nonwoven web and thermoplastic net-like web composite comprising at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web and at least one layer of a thermoplastic net-like web for producing stable fabric useful for carpet backing and packaging applications.

Multiple stage polymeric modifiers for thermoplastic struct- ural foam

ポリイソシアヌレ−トフォ−ム用触媒混合物

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Mold release coating process and apparatus using a supercritical fluid

A process which comprises (i) the generation of release surfaces by application to predetermined areas of a solid surface of a solution, suspension or dispersion of a release agent and a supercritical fluid that vaporizes from the release agent, (ii) the deposition of a mass onto the release surface containing the release agent, and (iii) the separation of the mass or a product derived from the mass from such surface covered by the release agent. Novel apparatus for carrying out the process are described.

Process for the preparation of polyurethane and/or polyurea based mouldings and the mouldings obtained using this process

Ein neues Verfahren zur Herstellung von gegebenenfalls geschäumten Formkörpern mit einer geschlossenen Oberflächenschicht durch Umsetzung in geschlossenen Formen eines Reaktionsgemischs aus a) organischen Polyisocyanaten, b) Verbindungen mit gegenüber Isocyanatgruppen reaktionsfähigen Wasserstoffatomen, c) Formtrennmitteln und gegebenenfalls d) weiteren Hilfs-und Zusatzmitteln, wobei als Komponente c) Salze aus (i) gesättigten oder ungesättigten Carbonsäuren mit mindestens 8 Kohlenstoffatomen und (ii) tertiären Aminen, die mindestens einen, mindestens 12 Kohlenstoffatome aufweisenden aliphatischen Kohlenwasserstoffrest al Substituenten des Stickstoffatoms tragen, verwendet werden und die nach diesem Verfahren erhaltenen Formkörper. A new process for the production of optionally foamed moldings with a closed surface layer by reaction in closed forms of a reaction mixture of a) organic polyisocyanates, b) compounds with hydrogen atoms which are reactive towards isocyanate groups, c) mold release agents and optionally d) further auxiliaries and additives, where as Component c) salts of (i) saturated or unsaturated carboxylic acids with at least 8 carbon atoms and (ii) tertiary amines which carry at least one aliphatic hydrocarbon radical containing at least 12 carbon atoms as substituents of the nitrogen atom, and the shaped bodies obtained by this process.

Automotive body components

Automotive body components having high impact strength and made of a composition comprising a blend of polystyrene-polybutadienepolystyrene and isotactic polypropylene and/or polyethylene, the components having elastic memories and adapted to resist aging and weather.

Melt-embossed polymer film

1496786 Perforated plastic sheets SMITH & NEPHEW RESEARCH Ltd 19 June 1975 [19 June 1974] 27218/74 Headings B5A and B5B Net-like plastics material is formed by grooving a sheet on both sides to form two sets of parallel ribs so that at the crossover points of the grooves the sheet is reduced to a thin membrane which ruptures when the sheet is biaxially stretched. In order to produce orientation through the rib sections on stretching and thus ensure greater tensile strength the ratio between the area of the intersection common to two ribs of sets Ia and the cross-sectional area of either rib II is not greater than 2 : 1.

Semi-continuous production of solid state polymeric foams

Process for forming mold releasable polyurethane, polyurea and polyureaurethane resins using isocyanate reactive polysiloxanes as internal mold release agents

Polyurethane, polyurea and polyureaurethane resins having improved mold release properties are made by including with the reactive ingredients certain internal mold release agents which are polysiloxane polymers having pendant organic groups which contain at least one hydroxyl, amino or mercapto group.

Golf ball having cellular cover

The subject invention relates to a golf ball having a cover which is completely or partially formed from a cellular polymeric material. By incorporating the subject invention into a golf ball structure, it is possible to selectively alter its "feel" characteristics, the physical properties and flight characteristics. The subject invention can be utilized with golf balls having either solid or wound cores. The subject golf ball cover can be formed from a plurality of natural and synthetic polymeric materials. It is preferred that the golf ball cover be formed from ionic copolymers of polyolefins and unsaturated monocarboxylic acids wherein said ionomers incorporate zinc or sodium ions. Mixtures of said ionic copolymers may likewise be utilized.

Versions of non-detachable net plastic structure

Plastics material mesh structures are made by providing a starting material (1) having a pattern of primary holes or depressions (2) and smaller secondary holes or depressions (3) between the primary holes or depressions (2), and stretching the plastics material to orientate the zones between adjacent holes or depressions (2, 3) to form orientated strands. A first stretch in a single direction produces intermediate structures such as those shown in Figures 1 b and 22b, having first mesh openings (4) and smaller second mesh openings (5). A subsequent stretch at right angles to the first stretch produces the structures such as those shown in Figures 1c or 22c having main orientated strands (8) and (11) or (23) interconnected by shorter orientated strands (10) or (25) and (29) arranged in such a way that only three strands meet at any junction.

Plastic material and its manufacturing method and die

Shapes molding process

PROCESS FOR THE MANUFACTURE OF PLASTIC FOAM MOLDED PARTS.

Procédé pour la fabrication de pièces moulées en mousse de matière plastique, dans lequel, (a) entre deux moitiés (1, 2) d'un moule chauffé, il est posé une feuille mince, élastique déformable à la chaleur, (b) par la partie supérieure (1) du moule, est introduit un mélange de matière plastique moussante réactif, dégageant de la chaleur, de façon qu'il puisse se répandre sur la feuille, (c) au cours de la formation de mousse, on fait un vide partiel entre la feuille et la moitié inférieure du moule.

Method of making apertured films and net like fabrics

A method of making apertured films including the step of perforating films of thermoplastic materials with embossing rolls engraved with patterns which form small slits or incipient slits in the sheet. The patterns are such that the design on the roll includes lands, or raised areas, which cross lands of the opposing roll at an acute angle. The perforated or partially perforated film formed may then be further processed by orientation, uniaxial or biaxial, simultaneous or sequential; by heat treatment; or both to modify the porosity, hole size, or other properties as desired.

Method and apparatus for molding cellular polymer article

Apparatus for and method of making foam articles having densified reinforcing regions

Low density, lightweight foam articles may be provided with certain portions or regions thereof, that are reinforced, having higher density and strength, obtained by compression of the foam in these locations, during or after formation of the foam. Such locations may be made sufficiently strong and dense to allow the article to be attached in place by fastening means, imbedded therein. The increase in density can be as much as from 5 pcf to 10 pcf or higher, depending upon the particular application. Many foam materials, capable of being molded, extruded, or otherwise shaped to a predetermined configuration, may be made with this combination of high and low density, including foams of styrenic polymer or copolymer compositions, urethanes, vinyls, and even non-thermoplastic based materials, such as phenolic foams.

Device for the continuous manufacture of polymeric foam blocks

Plastic material network structure and method for producing the same

Plastic material reticulated structure

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Steering wheel

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

In-mold coating of structural foams and resultant product

A method is disclosed comprising in-mold coating a structural foam part made from a thermoplastic aromatic polycarbonate resin or a thermoplastic ABS polymer resin with a thermosetting in-mold coating composition at a pressure of from about 25 to 50 p.s.i. and at a temperature not in excess of about 200° F. for from about 1 to 10 minutes, preferably for from about 1 to 3 minutes, to provide hard, smooth and adherent coatings, said thermosetting in-mold coating composition comprising an ethylenically unsaturated polyester resin and an ethylenically unsaturated monomer(s) catalyzed with an organic perioxide initiator including an accelerator for the initiator.

Method of molding using dissociated lignocellulosic material and the product so produced

Dissociated lignocellulosic material produced by a process of explosive depressurization is molded into products of widely varying densities. Various fibrous and woody materials can be incorporated into the molded product to give a wide range of nailing and strength characteristics. Color, water repellent, preservative and fire retardant materials can be mixed with the material before molding. Other aggregates can be bound into the molded product which can contain fire enhancement materials for fuel.

Method of obtaining storage-stable liquid polyisocyanate

Extruded plastics net or mesh structures

An extruded plastics mesh having two sets of oblique strands lying in adjacent planes and joined together at their crossing points by tenacious intersections is suitably stretched to form a structure having mesh openings each of which is a six-sided figure bounded on four sides by portions of four separate strands and on the other two sides by strandlike members comprising stretched intersections of the original mesh. To inhibit splitting of the structure along the length of the stretched intersections there is provided at opposite ends of each such intersection a relaxed web integral with the structure and extending across the crotch defined by the two strands which form the intersection.

STRUCTURE OF NETWORK STRETCHED PARTICULARLY FOR GEOTECHNICAL USE

Method of making net plastic strucrures with rhombic cells

Method of making moldings

Mould for making foamed plastic products

Method of continuous manufacture of polymer foam blocks

Patent JPH0253075B2

Improvements in or relating to the injection moulding of plastics materials

1,248,183. Injection moulds. SEMPERIT OSTERREICHISCH AMERIKANISCH GUMMIWERKE A.G. 19 Feb., 1970 [20 Feb., 1969], No. 7994/70. Heading B5A. An injection mould has a non-return valve 11 in its inlet passageway 8, 10 which valve is moved to open position by the pressure of injected material but is closed after injection by internal pressure in the mould. The invention is especially applicable to the moulding of foamable plastics material e.g. for making shoe soles and heels. The non-return valve 11 comprises a disc housed in a recess 9 in a member 6 which can be separated from the mould parts to enable the valve disc to be renewed. The valve is shown in Fig. 4 in the injection position wherein the injected material flows through milled slots 13, 14 in the walls of the recess 9. The valve disc may be made of cardboard or paper and may have one or more air escape holes for excess pressure release. The milled slots 13, 14 may be dispensed with if the recess 9 has a diameter somewhat larger than the diameter of the disc 11 (see Figs. 8, 9, not shown).

Construction for and method of waterproofing wiring harness

Method of preparing honeycomb insulation structure

Method is disclosed for preparing a honeycomb insulation structure having its cells partially filled with a low density foam and a high density integral skin completely covering one edge of the honeycomb. Method comprises placing one edge of a honeycomb in an inert material; introducing a foamable or foaming substance into the cells and allowing it to rise from the surface of the inert material until it overflows slightly. The overflowing foam comes into contact with a pressure platen just above the honeycomb thereby forming the high density integral skin. The level of the material in the cell determines the thickness of the void on one edge. Structure has utility in cryogenic storage.

Coloring solution for dental zirconia ceramics and method for using the same

A coloring solution for dental zirconia ceramics and a method for using the same are provided. The coloring solution consists of coloring agents, a solvent, and an additive. The coloring agents are a combination of two or more rare earth metal compounds, wherein the rare earth metal compounds having rare earth metal ions selected from the group consisting of praseodymium (Pr) ions, erbium (Er) ions, cerium (Ce) ions, and neodymium (Nd) ions. The concentration of the rare earth metal ions in the solution is 0.05˜3 mol/liter solvent. The molar ratio of Pr ions:Er ions:Ce ions:Nd ions in the solution is 1:(10˜50):(0˜20):(0˜30).

PROCESS FOR PREPARING MOLDED OBJECTS IN POLYURETHAN ELASTOMERS

Patent FR2031566A7

METHOD AND DEVICE FOR OBTAINING DIRECTLY, BY EXTRUDING PLASTIC MATERIALS, A PLATED WITH HOLES

Patent FR2117724B1

METHOD AND APPARATUS FOR THE PRODUCTION OF A POLYURETHANE FOAM WITH CENTRIFUGATION OF THE LIQUID BODIES GENERATING THIS FOAM

L'invention concerne un perfectionnement à la production d'une mousse de polyuréthanne. Avant leur introduction dans un moule, les corps liquides destinés à produire, par leur réaction, la mousse de polyuréthanne sont soumis à une rotation permettant la formation d'une mousse légère ou crème qui est envoyée dans un moule, notamment un moule dont le fond et les parois latérales subissent un mouvement de transfert linéaire. L'invention permet notamment la production continue de plaques de mousse de polyuréthanne de section essentiellement rectangulaire pour du rembourrage, etc. The invention relates to an improvement in the production of a polyurethane foam. Before their introduction into a mold, the liquid bodies intended to produce, by their reaction, the polyurethane foam are subjected to a rotation allowing the formation of a light foam or cream which is sent into a mold, in particular a mold whose bottom and the side walls undergo linear transfer movement. In particular, the invention allows the continuous production of polyurethane foam sheets of essentially rectangular cross section for padding, etc.

PROCESS FOR MANUFACTURING SKI BY INJECTION OF PLASTIC MATERIAL

PROFILE, PROCESS AND DEVICE FOR ITS MANUFACTURING AND IMPLEMENTATION

Profilé, en particulier pour fenêtres et portes avec un profil de raidissement interne creux en matériau rigide. Une masse de matière plastique extérieure est appliquée contre le profil de raidissement, de préférence en polyuréthane, pour former la surface externe du profilé; la masse de matière plastique entoure le profil de raidissement creux et constitue la forme extérieure du profilé, le profil de raidissement et la masse de matière plastique sont liés ensemble de façon qu'un déplacement longitudinal des deux parties l'une par rapport à l'autre est exclu et dans tout plan de section du profilé, la matière plastique reste étroitement serrée contre le profil de raidissement. Utilisation principale dans la construction. Profile, especially for windows and doors with a hollow internal stiffening profile made of rigid material. A mass of outer plastic material is applied against the stiffening profile, preferably polyurethane, to form the outer surface of the profile; the mass of plastic material surrounds the hollow stiffening profile and constitutes the outer shape of the profile, the stiffening profile and the mass of plastic material are bonded together so that a longitudinal displacement of the two parts relative to the other is excluded and in any section plane of the profile, the plastic remains tightly clamped against the stiffening profile. Main use in construction.

TUBULAR SHEATH IN PLASTIC MATERIAL AND DEVICE FOR THE PRODUCTION THEREOF

Patent FR2496545B1

Patent FR2257408B1

EMBOSSING PROCESS OF A THERMOPLASTIC POLYMERIC MATERIAL

PROCESS FOR GIVING A VERMICULITE PRODUCT STABILITY WITH REGARD TO WATER

L'invention concerne l'industrie minérale. Elle a pour objet un procédé pour conférer de la stabilité à l'égard de l'eau à un produit manufacturé en vermiculite, suivant lequel on met le produit manufacturé en contact avec la vapeur d'un composé azoté de formule : The invention relates to the mineral industry. It relates to a process for imparting stability with respect to water to a product manufactured in vermiculite, according to which the manufactured product is brought into contact with the vapor of a nitrogenous compound of the formula:

METHOD AND DEVICE FOR MAKING FILMS WITH ADJUSTABLE WALLS

A method of treating the surfaces of shaped articles of synthetic thermoplastic resins

Plastic material mesh structure and manufacturing method thereof

Patent FR1565161A

PERFECTIONS RELATING TO CROSS-LINKED STRUCTURES OR EXTRUDED PLASTIC NET STRUCTURES

PROCESS FOR THE MANUFACTURE OF A BAR OF SYNTHETIC MATERIAL HAVING THE APPEARANCE OF WOOD

PROCESS AND APPARATUS FOR PREPARING FOAM BREADS OF PLASTIC MATERIAL OF INDEFINITE LENGTH

L'invention concerne les appareils de fabrication de pains de mousse. Elle se rapporte à un appareil dans lequel la mousse qui se forme par dilatation sur un transporteur mobile 12 et entre deux transporteurs mobiles, est au contact d'un panneau 26, entre le point de gélification de la mousse et le point auquel la mousse n'est plus mobile. Application à la fabrication de pains de mousse de section bien rectangulaire. The invention relates to apparatus for making foam bars. It relates to an apparatus in which the foam which is formed by expansion on a mobile conveyor 12 and between two mobile conveyors, is in contact with a panel 26, between the gel point of the foam and the point at which the foam n is more mobile. Application to the manufacture of foam loaves of very rectangular section.

Patent FR2105166B1

PLASTIC MESH STRUCTURE AND PROCESS FOR PRODUCING THE SAME

L'INVENTION CONCERNE DES STRUCTURES MAILLEES D'UNE GRANDE RESISTANCE A LA TRACTION, OBTENUES A PARTIR D'UNE MATIERE DE DEPART, QUI A AU MOINS 0,75MM D'EPAISSEUR ET QUI COMPORTE UN ENSEMBLE REGULIER CARRE OU RECTANGULAIRE DE TROUS OU DE DEPRESSION, ET QUI EST ETIREE DANS UNE DIRECTION OU DANS DEUX DIRECTIONS PERPENDICULAIRES ENTRE ELLES. LA STRUCTURE ETIREE UNIAXIALEMENT A DES BRINS ORIENTES 17 QUI SONT RELIES PAR DES BARRES PARALLELES 20, 21, L'ORIENTATION DES BRINS PENETRANT DANS LES BARRES EN 23, MAIS LES CENTRES DES BARRES EN 20 ETANT PLUS EPAIS QUE LES BRINS. APPLICATION NOTAMMENT A LA RETENUE DE MATIERES EN PARTICULES.

Patent FR2439075B1

METHOD OF MANUFACTURING OBJECTS FROM A WATER-HARDENING MATERIAL

La présente invention concerne un procédé de fabrication de plaques et d'autres objets à partir de matériau durcissant à l'eau, comme le ciment et le plâtre, contenant des réseaux continus de polymères organiques synthétiques. Ce procédé est caractérisé en ce que le matériau durcissant à l'eau contient des réseaux continus non fibrillés qui sont façonnés en formant une feuille à partir d'un ou de plusieurs polymères organiques synthétiques et en aménageant, dans cette feuille, des mailles de telle façon que le réseau incorporé dans le matériau durcissant à l'eau possede au moins 2 mailles par cm**2. Application notamment à la fabrication de plaques à partir de ciment ou de plâtre. The present invention relates to a method of making boards and other objects from water-hardening material, such as cement and plaster, containing continuous networks of synthetic organic polymers. This process is characterized in that the water-hardening material contains continuous non-fibrillated networks which are shaped by forming a sheet from one or more synthetic organic polymers and by arranging, in this sheet, meshes of such so that the network incorporated in the water-hardening material has at least 2 meshes per cm ** 2. Application in particular to the manufacture of boards from cement or plaster.

Patent FR2386410B1

ARTICULATED OBJECT OF A SINGLE HOLD IN PLASTIC MATERIAL AND ITS MOLDING PROCESS

L'invention concerne un objet articulé d'un seul tenant en matière plastique et son procédé de moulage. Un tel objet est moulé en injectant un mélange fluide d'un polymère et d'un agent de soufflage dans la cavité d'un moule extensible de manière qu'il la remplisse à l'état sans mousse, mais à la température de moussage Le moule est déployé de façon à former des parties de l'objet ayant une âme en mousse, tandis que la résine située à proximité de la surface du moule est encore fluide, et un élément de façonnage de l'articulation est maintenu en position pour former une partie flexible mince sans mousse, tandis que des parties de transition divergentes permettent une augmentation progressive de l'épaisseur de la mousse centrale entre la partie flexible et les panneaux de l'objet qui présentent une ame de mousse d'épaisseur normale. Application à la réalisation d'un objet articulé présentant une ame en mousse dans ses panneaux. The invention relates to an articulated object in a single piece of plastic material and its molding method. Such an object is molded by injecting a fluid mixture of a polymer and a blowing agent into the cavity of an expandable mold so that it fills it in a non-foaming state, but at the foaming temperature Le. mold is deployed to form parts of the object having a foam core, while the resin near the mold surface is still fluid, and a joint shaping member is held in position to form a thin flexible part without foam, while divergent transition parts allow a gradual increase in the thickness of the central foam between the flexible part and the panels of the object which have a foam core of normal thickness. Application to the production of an articulated object having a foam core in its panels.

Patent FR2305454B1

POLYURETHANE POLYMERS AND THEIR PREPARATION

Patent FR2275297B1

TULLE OF PLASTIC MATERIAL AND METHOD OF MANUFACTURING THE SAME

L'INVENTION CONCERNE UN PROCEDE DE FABRICATION DE TULLE DE MATIERE PLASTIQUE. ELLE SE RAPPORTE A UN PROCEDE SELON LEQUEL DES BRINS 30 SONT EXTRUDES PAR UNE FILIERE 10 PAR DES ORIFICES DELIMITES ENTRE DES PORTEES 34 DISPOSEES CIRCONFERENTIELLEMENT AUTOUR DE LA FILIERE. PAR INTERMITTENCE, UN PERCUTEUR 42 VIENT OUVRIR UN ORIFICE ANNULAIRE PERMETTANT LA FORMATION DE BRINS TRANSVERSAUX 32. SELON L'INVENTION, CHAQUE BRIN EST FORME AVEC UNE STRUCTURE LAMINAIRE A TROIS COUCHES, LES POLYMERES ETANT COLLES LES UNS AUX AUTRES MAIS NE SE MELANGEANT PAS. APPLICATION A LA FABRICATION D'ARMATURES POUR PAPIERS POUR SERVIETTES. THE INVENTION RELATES TO A PROCESS FOR MANUFACTURING TULLE OF PLASTIC MATERIAL. IT RELATES TO A PROCESS ACCORDING TO WHICH STRANDS 30 ARE EXTRUDED BY A DIE 10 THROUGH ORIFICES DELIMITED BETWEEN GATES 34 ARRANGED CIRCONFERENTIALLY AROUND THE DIE. INTERMITTENTLY, A PIERCER 42 OPENS AN ANNULAR ORIFICE ALLOWING THE FORMATION OF CROSS-STRANDS 32. ACCORDING TO THE INVENTION, EACH STRAND IS SHAPED WITH A THREE-LAYER LAMINAR STRUCTURE, THE POLYMERS BEING BONDED TO ONE TO THE OTHERS BUT DO NOT MIX. APPLICATION TO THE MANUFACTURE OF REINFORCEMENT FOR TOWEL PAPERS.

SHEET MATERIAL

Patent FR2421154B1

APPARATUS AND METHOD FOR MOLDING A THERMOPLASTIC RESIN FOR PROVIDING UNIFORM HEATING OF THE MOLD CAVITY

CAPPING ELEMENT FOR CONTAINERS FOR LIQUIDS

MULTI-PHASE ACRYLIC POLYMER MODIFIER FOR THE MANUFACTURE OF THERMOPLASTIC FOAMS, PROCESS FOR MANUFACTURING SUCH FOAMS AND ARTICLES MADE WITH THESE FOAMS

DEVICE FOR THE MANUFACTURE OF MOLDED PARTS IN EXPANDABLE PLASTICS

Dispositif pour la fabrication de pièces moulées en matières plastiques expansibles, en particulier en polyuréthane, dans lequel les parties d'un moule en deux parties, dans lequel les pieces moulées sont expansées, sont fixées à deux plateaux d'un support de moule placés l'un au-dessus de l'autre qui peuvent basculer autour d'axes parallèles et dont un est mobile dans la direction de l'autre. Le bâti du support de moule est constitué d'un cadre rectangulaire, les plateaux sont montés sur le devant du cadre rectangulaire, le plateau inférieur est articulé à des bras montés sur la partie horizontale inférieure du cadre rectangulaire, le plateau supérieur est articulé à des bras mobiles verticalement sur deux montants montés sur le côté des plateaux, l'un dans la zone de la partie verticale de gauche du cadre rectangulaire, l'autre dans la zone de sa partie verticale de droite. Device for the manufacture of molded parts from expandable plastics, in particular polyurethane, in which the parts of a two-part mold, in which the molded parts are expanded, are fixed to two trays of a mold support placed therein. 'one on top of the other which can swing around parallel axes and one of which is movable in the direction of the other. The frame of the mold support consists of a rectangular frame, the shelves are mounted on the front of the rectangular frame, the lower plate is hinged to arms mounted on the lower horizontal part of the rectangular frame, the upper plate is hinged to vertically movable arms on two uprights mounted on the side of the shelves, one in the area of the left vertical part of the rectangular frame, the other in the area of its right vertical part.

PROCESS FOR THE PREPARATION OF A POLYURETHANE ELASTOMER BY REACTION INJECTION MOLDING AND SHAPED ARTICLE OBTAINED BY THIS PROCESS

DEVICE AND METHOD FOR MANUFACTURING ADAPTER BLOCKS HAVING PRESSURE FLUID CHANNELS

TUBULAR SHEATH OF PLASTIC MATERIAL AND DEVICE FOR REALIZING SAME

L'INVENTION EST RELATIVE A UNE GAINE TUBULAIRE EN MATIERE PLASTIQUE COMPORTANT DES ALTERNANCES DE BANDES LONGITUDINALES PLEINES A STRUCTURE DE FILM ET DE BANDES LONGITUDINALES PRESENTANT UNE STRUCTURE DE FILET, LES BANDES A STRUCTURE DE FILM PRESENTANT LA MEME LARGEUR. LA LARGEUR DE CHACUNE DES BANDES A STRUCTURE DE FILET3 EST INFERIEURE A ENVIRON 2,5 FOIS LA LARGEUR DE CHACUNE DES BANDES2 A STRUCTURE DE FILM. THE INVENTION RELATED TO A TUBULAR SHEATH OF PLASTIC MATERIAL INCLUDING ALTERNATIONS OF FULL LONGITUDINAL STRIPS WITH A FILM STRUCTURE AND LONGITUDINAL STRIPS WITH A NET STRUCTURE, THE FILM STRUCTURED STRIPS SHOWING THE SAME WIDTH. THE WIDTH OF EACH OF THE FILM STRUCTURED TAPES2 IS LESS THAN ABOUT 2.5 TIMES THE WIDTH OF EACH OF THE FILM STRUCTURED TAPES2.

PROCESS AND APPARATUS FOR MANUFACTURING A PLASTIC FOAM

POLYURETHANE POLYMERS AND THEIR PREPARATION

La présente invention est relative à des polymères de polyuréthanne-polyurée élastomères ainsi qu'à leur préparation. Suivant l'invention, ces polymères de polyuréthanne-polyurée élastomères sont obtenus à partir de la réaction de polyisocyanates organiques avec A : des polyols à hydroxyle primaire ayant une fonctionnalité de 2 à 4 et un poids moléculaire de 1500 à 12000, et B : des mélanges d'allongeurs constitués 1 : d'une diamine aromatique et 2 : d'un diol de faible poids moléculaire, la diamine aromatique constituant de 5 à 45 % en poids du mélange d'allongeurs. The present invention relates to elastomeric polyurethane-polyurea polymers as well as to their preparation. According to the invention, these elastomeric polyurethane-polyurea polymers are obtained from the reaction of organic polyisocyanates with A: primary hydroxyl polyols having a functionality of 2 to 4 and a molecular weight of 1500 to 12000, and B: of mixtures of extenders consisting of 1: of an aromatic diamine and 2: of a low molecular weight diol, the aromatic diamine constituting from 5 to 45% by weight of the mixture of extenders.

METHOD FOR MANUFACTURE OF OBJECTS FROM WATER-HARDENING MATERIAL

PROCESS AND DEVICE FOR THE MANUFACTURE OF MOLDED THERMOPLASTIC MATERIAL PARTS

Mineral products

PLASTIC MESH STRUCTURE AND METHOD FOR THE PRODUCTION THEREOF

L'INVENTION CONCERNE UNE STRUCTURE MAILLEE DANS LAQUELLE, AFIN DE FORMER UNE JONCTION AMELIOREE AYANT MOINS TENDANCE A SE DECHIRER SOUS DES CHARGES DE CHOC, UN ENSEMBLE DE TROUS (OU DE DEPRESSIONS) EN FORME DE LOSANGES EST FORME DANS UNE FEUILLE DE MATIERE PLASTIQUE. LA FEUILLE EST ETIREE DE MANIERE QUE LES ZONES ENTRE DES TROUS ADJACENTS DANS CHAQUE LIGNE FORMENT DES BRINS ORIENTES 3 ET QUE LES ZONES ENTRE DES TROUS ADJACENTS DANS CHAQUE RANGEE ET DES TROUS ALIGNES DANS DEUX RANGEES SEPAREES PAR UNE AUTRE FORMENT DES JONCTIONS 4 AYANT LEURS ZONES LATERALES 5 ORIENTEES, MAIS UNE ZONE CENTRALE 6 NON ORIENTEE OU MOINS ORIENTEE, C'EST-A-DIRE PLUS EPAISSE. APPLICATION NOTAMMENT A LA REALISATION DE FILETS DE PECHE. THE INVENTION RELATES TO A MESH STRUCTURE IN WHICH, IN ORDER TO FORM AN IMPROVED JUNCTION WITH LESS TENDENCY TO TEAR UNDER SHOCK LOADS, A SET OF HOLES (OR DEPRESSIONS) IN THE FORM OF DIAMONDS IS SHAPED IN A SHEET OF PLASTIC MATERIAL. THE SHEET IS STRETCHED SO THAT THE ZONES BETWEEN ADJACENT HOLES IN EACH LINE FORM 3-ORIENTED STRANDS AND THE ZONES BETWEEN ADJACENT HOLES IN EACH ROW AND ALIGNED HOLES IN TWO ROWS SEPARATED BY ANOTHER FORM OF 4 JUNCTIONS HAVING THEIR ZONES LATERALS 5 ORIENTED, BUT A CENTRAL ZONE 6 NOT ORIENTED OR LESS ORIENTED, THAT IS THICKER. APPLICATION IN PARTICULAR TO THE MAKING OF FISHING NETS.

Mesh structure and laminate made therewith

Abstract In order to produce a biaxially orientated mesh structure using a single axis draw, a plastics material starting material has parallel, side-by-side main zones separated by lines of holes or depressions; the starting material is drawn parallel to the main zones, stretching the main zones into continuous, orientated main strands interconnected by smaller cross-section strands which have been formed from the zones between holes or depressions in each line, and have been orientated at right angles to the direction of drawing by the effect of the main zones decreasing in width as they were stretched. The mesh structure is suitable for cross-lamination.

METHOD AND DEVICE FOR PRODUCING MOLDED PARTS FROM A MULTI-COMPONENT REACTION MIXTURE

Patent GR79338B

IMPROVED PROCEDURE FOR THE ELABORATION OF A MESH STRUCTURE OF PLASTIC MATERIAL AND PRODUCT OBTAINED

Methods of manufacturing embossed resinous products

METHODS OF MANUFACTURING EMBOSSED RESINOUS PRODUCTS ABSTRACT OF THE DISCLOSURE A method of manufacturing an embossed resinous product having a textured surface which comprises: forming a potentially foamable resinous composition containing a blowing agent therein; heating the potentially foamable resinous composition to an elevated temperature to activate the blowing agent to cause blowing of the potentially foamable resinous composition; and then, before the freshly blown resinous composition has cooled to ambient or room temperature and while it is still relatively soft, mechanically embossing the freshly blown resinous compo-sition under pressure by applying to its surface a previously blown, chemically embossed resinous product having a suitably textured surface; and cooling the freshly blown and now embossed resinous composition to yield an embossed resinous product.

Production of cross-laminated film from tube

A cross-oriented multi-layer laminated plastic film is produced by first providing a flattened tubular plastic film having a outer plastic film layer with a first melting temperature and an inner plastic film layer with a second melting temperature lower than the first melting temperature, the outer plastic film layer having a molecular orientation substantially in the direction of the length of the tubular plastic film. The flattened tubular plastic film is passed from an expanding station in an expanded condition along a predetermined path in the direction of the length of said film to a collapsing station in a continuous manner. The expanded tubular plastic film is rotated about the predetermined path as the film passes from the expanding station to the collapsing station to effect cross-orientation of the outer film layer in directions inclined to the direction of travel of the tubular plastic film. The tubular plastic film is flattened at the collapsing station and pressure is applied to the flattened film at a temperature high enough to soften the inner plastic film but low enough not to soften the outer plastic film layer to an extent to cause the outer plastic film layer to lose its molecular orientation. The said pressure causes the opposite sides of the tubular plastic film to engage one another and to cause adjacent inner film layers to become bonded together and to the outer film layers to form a cross-oriented multi-layer laminated plastic film.

Plastics material mesh structure

In order to form an improved junction which is less liable to tear under shock loads, a diamond pattern of holes (or depressions) is formed in plastics material sheet. The holes are then in two sets of parallel lines each making an angle to the subsequent stretching direction and the holes are also in parallel rows at right angles to the stretching direction. The sheet is stretched so that the zones between adjacent holes in each line form orientated strands and the zones between adjacent holes in each row form junctions which have their lateral zones orientated but have a central zone which is unorientated or less orientated, i.e. which is thicker. The central zone can extend into two opposite crotches or be completely surrounded by highly orientated lateral zones.

METHOD FOR PRODUCING OPTIONALLY CELLED POLYURETHANE-POLYURANE MOLDED BODIES USING URETHANE AND ISOCYANURATE GROUPS CONTAINING 2,4- AND / OR 2,6-TOLUYLENE DIISOCYANATES

DEVICE FOR CONTINUOUS MANUFACTURING OF BLOCKS OF CELLULAR MATERIALS WITH RECTANGULAR SECTION

Dispositif permettant d'exercer un effort vertical réglable sur la section croissante d'un matériau cellulaire en formation, sans frottement ni efforts perturbateurs. Ce dispositif comprend une plaque de couverture de forme 11 fixée à un mécanisme à cinq articulations, lui-même fixé à un longeron. La disposition des cinq articulations assure à la plaque un mouvement de monte-et-baisse approximativement vertical. L'invention permet de couvrir un matériau cellulaire en formation en s'adaptant aux variations de section lors de la formation, tout en exerçant un effort constant et réglable. Device making it possible to exert an adjustable vertical force on the increasing section of a cellular material in formation, without friction or disturbing forces. This device comprises a cover plate of form 11 fixed to a mechanism with five joints, itself fixed to a spar. The arrangement of the five joints provides the plate with an approximately vertical up-and-down movement. The invention makes it possible to cover a cellular material in formation by adapting to variations in section during formation, while exerting a constant and adjustable force.

Water stabilization for vermiculite product

NET AND OTHER PLASTIC NECK STRUCTURES

Plastics material article

ABSTRACT In order to make a non-planar plastics material article, a starting material has at least one ring of holes or depressions and is pressed so that the part which is within the ring is moved generally at right angles to the plane of the ring with respect to the part which is outside the ring, thereby stretching, into orientated strands, zones between adjacent holes or depressions in the ring; in the finished article, the strands interconnect the two parts.

Patent JPS5825097B2

Reaction injection molded elastomer containing an internal mold release made by a two-stream system

The invention is a method of making a molded reaction injection molded elastomer which will release from its mold without the presence of externally applied mold release agents. The reaction injection molded (RIM) elastomer is made by injecting exactly two streams via a RIM machine into a mold cavity of the desired configuration, a formulation comprising in the first stream amine terminated polyethers of greater than 1,500 molecular weight, an amine terminated chain extender and an internal mold release agent, and in the second stream an aromatic polyisocyanate. The resulting RIM elastomer may be removed from the mold easily. RIM elastomers are useful, for example, for automobile body parts.

Process for producing a continuous strand of plastic foam, preferably polyurethane foam, and plant for carrying out the process.

DEVICE FOR THE CONTINUOUS MANUFACTURING OF FOAM BLOCKS WITH A RECTANGULAR STRAIGHT SECTION

PROCESS FOR MANUFACTURING A PRESSURE CHANNEL CHANNEL WITH APPLICATION OF AN INTEGRAL FOAM MATERIAL