Abstract: A method of forming a metal and plastic composite structure including providing an elongated metallic element; providing first and second plastic sheets; heat forming the first and second plastic sheets to form first and second preformed plastic parts; and, following the individual heat forming of the parts and with the parts in a hot flowable state, assembling the plastic parts and the metallic element by fusing portions of the parts together with the metallic element positioned therebetween to form a composite assembly comprising a twin sheet plastic structure with the metallic element sandwiched therebetween. Also disclosed are composite structures, including a motor vehicle head rest and a seat back for a motor vehicle seat assembly, constructed in accordance with the invention methodology.

Abstract: The method provides that a pipeline (10) or passageway (10) wall is coated using a backstop means, a body of resinous material (6) and an everting tube (5). These items are located inside the passageway to be lined and moved there along with the backstop (1) providing support for the bulk of resin material and also applying pressure via the resin material onto the everting face (16). When the everting tube is a resin absorbent material, the presence of the bulk of the fluent material prevents air from becoming entrained in the everting face and prevents voids in final lining. The resin may be introduced via a tee piece (12) through the lag thereof while the everting tube is introduced along the arms of the tee.

Abstract: In the production of growth blocks of sphagnum there are considerable operational problems with the required compacting of the loose sphagnum, as both compaction worms and pistons may easily get stuck. Instead, the invention provides for the use of a suction technique, whereby the loose sphagnum (2) is sucked into a perforated pipe (34) in a suction chamber (28), whereby a marked compaction of the material is achievable without any use of mechanical devices. The compacted block material may be surrounded by a decomposable paper casing, which is laid in successively as a lining hose of air permeable paper. The compacted material can be delivered as a compact string (46) by successive projection movements of the suction chamber (28) for being cut into blocks (56), and the suction chamber can temporarily opened for free return movements into its initial position.

Abstract: A thin, flexible tubular membrane provides a heat containment tube for inserting into and inflation within an underground conduit to be repaired. Folded rigid thermoplastic pipe is inserted into the tube while not and flexible. The tubular membrane is pressurized to exclude unwanted fluids from within the existing conduit. Hot steam is injected into the tube to heat the pipe full-length externally and internally until flexible. The pipe is then rounded and expanded against the walls of the conduit with the tube therebetween. The rounding and expanding of the pipe is carried out progressively by moving a plug through the pipe and by injecting hot steam under pressure behind the plug.

Abstract: A process for making a continuous fiber reinforced thermoplastic article that is sufficiently strong and rigid for use as a structural member includes the steps of providing a tubular composite parison that has continuous, axially oriented glass fiber filaments dispersed in a thermoplastic resin and admitting pressurized air into the interior of the tubular parison to expand the tubular parison to a desired shape.

Abstract: A method for lining a branch pipe comprising the steps of: preparing a tubular liner bag by sewing a rectangular nonwoven resin-absorbent fabric into a tubular shape with one end closed; attaching an impermeable plastic film over the external surface of this tubular liner bag; soaking the nonwoven resin-absorbent fabric with a hardenable fluid resin; everting the liner bag into the branch pipe until the eversion head of the liner bag is stopped by the inner wall of the main pipe; forcing the eversion head of the liner bag to turn downstream in the main pipe, thus allowing the the liner bag to evert entirely; hardening the hardenable fluid resin while inflating the liner bag; and removing that portion of the liner bag which protrudes into the main pipe.

Abstract: A method of manufacture of a fiberscopic catheter having a tightly fitted optical glass fiber bundle received within an internal lumen of the catheter. The lumen for receiving the optical glass fiber bundle is heated and expanded under internal fluid pressure. The catheter and lumen are then cooled with the lumen still under the internal fluid pressure. After cooling, the fluid pressure is released and the lumen retains its expanded condition. An optical glass fiber bundle is inserted into the expanded lumen to a predetermined position within the catheter. The catheter and lumen are reheated to contract the expanded diameter of the lumen about the optical glass fiber bundle to provide a fiberscopic catheter having a tightly fitted fiber optic bundle within the catheter.

Abstract: A method for installing a pipe liner in a pipe includes the steps of reducing the diameter of the liner, so that it can be positioned within the pipe, installing the liner in the pipe, enlarging an upstream end of the liner, disposing a liner expander within the upstream end of the liner, pressurizing the upstream end of the liner with a heated fluid, the temperature of the heated fluid being sufficient to soften the liner, and the pressure of the heated fluid being sufficient to propel the liner expander from the upstream end of the liner to a downstream end, allowing a portion of the heated fluid to bypass the liner expander for heating and softening the liner ahead of the expander, and reducing the temperature of the pressurizing fluid to cool the liner below the softening temperature, to allow it to stiffen and form a liner within the pipe.

Abstract: When a resin article having at least one thickened part is blow-molded, a parison is extruded and suspended between halves of a blow mold the inner surface of which defines the outer shape of the article to be molded. An expander panel is inserted into the space inside the parison, and is moved toward the part of the inner surface of the blow mold corresponding to the thickened part of the article to press thereagainst a part of the parison. Then the blow mold is closed and pressurized gas is blown into the parison.

Abstract: A process for fabricating manufactured articles from fiberglass reinforced thermoplastic sheets, which consists of forming said plates while they are heated at their melting point and coupled with a barrier film, by either blow-moulding or thermoforming.

Abstract: A method producing deformed pipe liners from continuously extruded thermoplastic material by collapsing and bending deformable portions of the tube toward a back-up portion thereof and without elongation to maintain diameter and wall thickness, and apparatus to carry out said method and characterized by at least one back-up roller and at least one shaping roller folding the deformable portion along a line of symmetry and juxtaposing a fold of the tube to the back-up portion, all at raised temperature followed by reduced temperature on a rail conforming to the deformed tube configuration.

Abstract: A method of making a bottle with a handle, wherein a synthetic-resin parison is disposed in half-cylindrical molds with a handle body, which is blow-molded and at the same time integrated with the handle body, characterized in that the parison is disposed between the opened molds; the handle body is tacked to a face of matching faces of the half-cylindrical molds; the molds are closed; and the blow-molding is performed.

Abstract: In a process for the production of hollow bodies from thermoplastic material by blow molding, an additional body is disposed inside the hollow body by being carried on a holding means which is joined to the inside surface of the wall of the hollow body. The additional body is disposed on the holding means at a spacing from the inside surface of the wall of the hollow body while that surface is subjected to a treatment with a treatment medium, so that the treatment medium has adequate access to the wall of the hollow body in the region of the additional body. After termination of the treatment the additional body is then moved on the holding means into a final position in which it is disposed at least closely adjacent to or in contact with the inside surface of the wall of the hollow body.

Abstract: A method of making game racket frame of plastic compound material includes a tubular body, which is formed by a bendable inner tube wrapped orderly and windingly with the cured thermoplastic plastic thin films and the long fiber fabric sheets made up of a plurality of long fiber bundles. The tubular body is placed in a mold cavity of a molding tool, which is subjected to a heat corresponding to the melting point of the thermoplastic plastic thin film. A gas with a first predetermined pressure is introduced into the tubular body so as to force the molten thermoplastic plastic thin film to diffuse uniformly into the interstices of the fiber bundles. Another gas having a second predetermined pressure is introduced into the tubular body to force the outer shell of tubular body to attach intimately to the wall of mold cavity of the molding tool, which is then cooled to permit the removal of the racket frame made therein. The method produces a recyclable racket frame and no waste causing environmental pollution.

Abstract: A method of making a bicycle frame of plastic composite material includes a process in which an inner tube is wrapped orderly with at least a thermoplastic matrix layer and a long fiber reinforcing layer, so as to form a tubular object having a laminated outer shell. The tubular object is placed in a molding tool, which is then heated up to a temperature corresponding to the melting point of the thermoplastic matrix. Under the condition that the heating temperature is maintained, a pressurized gas having a pressure is introduced into the tubular object in such a manner that the pressure is increased progressively and stepwise for a predetermined period of time. The molding tool is finally cooled to permit the removal of a newly-formed bicycle frame, which is light in weight, strong and tough.

Abstract: A method of molding a fuel tank wherein two baffle plates mounted on a blow-in are inserted in a molten parison of a thermoplastic resin surrounded by a split metal mold. The split metal mold is closed around the parison and a pressurized fluid is fed through the blow-in into the molten parison to blow-mold the fuel tank. The baffle plates, during the blow-molding, are melt-adhered onto the inner wall of the fuel tank. A blow-molded fuel tank containing two baffle plates adhered to the inner wall of the fuel tank is obtained.

Abstract: A method of attaching a member to the interior of a blow-molded plastic fuel tank wall. The wall is molded from a pliable parison. An inwardly directed projection is formed integral with the wall. The projection has an inner surface and an outer surface. The outer surface forms a cavity receiving a core. The core is inserted within the cavity while the parison is partially pliable and fuzes to the wall. The projection is inserted through an aperture in the member and heated. The softened projection is squashed to secure the member to the wall.

Abstract: A method for lining a high pressure pipeline with a tubular plastic liner. After depressurizing, purging and cleaning the pipeline is broken into discrete sections each of which is to receive a liner segment. The sections are reamed to remove obstructions which might damage the liner and a close-fitting liner segment is drawn into each section. Each liner segment is fixed at opposed ends of respective pipeline sections to prevent longitudinal movement of the segments. Bleeder holes are provided through the pipeline walls at opposed ends of each pipeline section. After the pipeline sections are reconnected to reform the pipeline, a relatively warm, pressurized fluid is pumped through the pipeline to radially expand each liner segment against the inner walls of the pipeline, thus evacuating the spaces between liner segments and pipeline sections by forcing air, water and other impurities through the bleeder holes.

Abstract: A method for hooping and maintaining in compression a core by a sheath, with the sheath being made of a composite material and having an internal cross section which is less than an external cross section of the core. The core and the sheath are aligned by centering them with respect to each other, and a prior tensile force is exerted over the core to provide a suitable sealing between the portion in contact of each of the ends of the core and of the sheath. A pressurized fluid is injected into the sheath in a direction of the core, to increase the cross section of the sheath by expanding the sheath in a circumferential direction. The core is thereby gradually inserted into the sheath. When the insertion is complete, fluid injection is ceased and an expendable portion of the sheath is cut off.

Abstract: A hollow molded article is produced by supplying a molten resin between a pair of a fixed mold and a movable mold before the fixed mold and the movable mold are closed, inserting at least one gas-supplying pin which is provided on a surface of the fixed mold to form a hollow part in a part of the resin and supplying pressurized gas through said gas-supplying pin before the mold closing is finished, closing the movable mold to fill the resin in a cavity formed by the molds, slightly opening the molds while pressurizing a gas in the resin to expand the hollow part and opening the movable mold to remove a hollow molded article from the molds.

Abstract: A liner assembly for a manhole comprises a multiple ply generally cylindrical tube. The outermost ply is adapted for being impregnated with material for rigidifying and bonding the outermost ply to a manhole. The innermost ply is adapted for being impregnated with a material for rigidifying the innermost ply so that the manhole becomes structurally reinforced. An impermeable ply is disposed between the innermost and outermost plies. The outermost, innermost, and impermeable plies are secured together so that the plies are maintained facially oriented. Each of the plies is cut along a first end of the tube for providing a fluid flow path when the assembly is installed in the manhole and an opposite end of the tube is fully opened.

Abstract: A process for preparing thermoinsulating and structural formal articles in which(a) a thermoplastic polymer sheet is heated at a temperature above its softening point;(b) the heated thermoplastic polymer sheet is thermoformed on a thermoinsulating foamed preform made of substantially the same polymeric material; and in which(c) prior to the thermoforming in step (b), the thermoinsulating foamed preform is cooled to prevent excessive collapse of the surface of the thermoinsulating foamed preform resulting from contact with the heated sheet.

Abstract: Molding a hollow shaped body which has a skin made of a synthetic resin and a hollow portion therein by a mold block provided with a mold cavity in the shape of the hollow shaped body, a tub into which an excess amount of the synthetic resin can flow and a small flow path communicating between the mold cavity and the tub. The process includes forming the skin of the hollow shaped body by injecting a molten synthetic resin into the mold cavity to fill up the cavity. Thereafter, a gas is introduced into the injected synthetic resin to thereby form the hollow portion. The gas injection forces a part of the synthetic resin out of the mold cavity and into the tub through the small flow path.

Abstract: This invention relates to liners containing contaminants, such as styrene, and to methods for lining pipes, such as sewer pipes with liners containing contaminants, such as styrene. In one embodiment, this invention provides a liner and lining method that reduces contamination of the ambient with contaminants from the liner and/or the lining process, such as styrene. In the case of sewers, the carrier pipes lined may be, for example, PVC, clay or concrete, but pipes of metal or other materials, such as asbestos, may also be lined with the liner and lining method of this invention.

Abstract: A thin, flexible tubular membrane provides a heat containment tube for inserting into and inflation within an underground conduit to be repaired. Folded rigid thermoplastic pipe is inserted into the tube while hot and flexible. The tubular membrane is pressurized to exclude unwanted fluids from within the existing conduit. Hot steam is injected into the tube to heat the pipe full-length externally and internally until flexible. The pipe is then rounded and expanded against the walls of the conduit with the tube therebetween. The rounding and expanding of the pipe is carried out progressively by moving a plug through the pipe and by injecting hot steam under pressure behind the plug.

Abstract: A method of processing a composite structure in an autoclave involves producing a layup (10) with a low density honeycomb core (12) covered by resin impregnated composite face plies (14). The layup is sealed to a mold (18) under a vacuum bag (20). The layup is then cured in an autoclave under high temperatures and pressures. A vacuum is applied between the layup (10) and the vacuum bag (20) via a vacuum port (22), thus creating a pressure differential across the bag (20). This creates a compressive consolidating force on the composite face plies (14). Volatiles emitted during curing are drawn away through the vacuum port (22). The core (12) communicates with the autoclave by means of a pressurization tube (26) which penetrates the mold (18) and into the core (12), thus eliminating the pressure differential between the core (12) and the autoclave. Autoclave pressure is communicated throughout the entire core via perforations (13) in the honeycomb core (12).

Abstract: The method of making a sports racket frame with improved string holes includes a predetermined number of insertion pins pre-arranged in the molding cavity. The inner wall surface of the molding cavity adjacent to each insertion pin is filled with the fiber cement made of materials identical in quality with those making up the tubular strip used to form the racket frame. The sports racket frame so attained is composed of string holes which are integrally and simultaneously made with the racket frame as a unitary body and are provided with tubular support wall extending along the circumference thereof to reinforce the structural strength of the racket frame.

Abstract: Blow molding and thermoforming processes in which a mold system having low thermal inertia mold-halves provided with heating and cooling systems is utilized for producing plastic articles coated with surface-upgrading films of high melting polymers or polymers exhibiting a high scratch resistance to improve mechanical characteristics of the molded article. The films may be positioned, before the mold is closed, close to the low thermal inertia mold-halves. Rapid heating and rapid cooling of the mold-halves in contact with the surface-upgraded films permit strength adhesion of the upgrading material to the surface of the molded article.

Abstract: An apparatus for reversing a tubular bag for internally lining a utility pipe installed underground, which includes a container for defining a closed space and containing a liquid body, constructed such that an amount of a liquid body therein has first and second level surfaces, the first partially defining the closed space and the second being exposed to atmospheric air; a compressor to supply compressed air to the closed space; and the tubular bag to be reversed. The tubular bag is primarily arranged in a manner such that it penetrates through the liquid body passing the first and second level surfaces and also penetrates through the closed space, with one end portion of the bag placed in atmospheric air and the other end portion thereof reversed and fixed, and some of the reversed portion partially defining the closed space so that when the pressure in the closed space is increased that portion of the tubular bag which is defining the closed space is forced to inflate and be reversed further.

Abstract: In a hollow molded container equipped with a label and its production method, molding is made by use of a label consisting, as a base, of a stretched film of a plastic having a thermal shrinkage ratio greater than a mold shrinkage ratio of a plastic constituting the outer surface of a container, at a temperature 40.degree. C. lower than the melting point or softening point of the plastic so that the label is bonded to the container at a residual equilibrium shrinkage ratio (Rs), defined below, of 0.5 to 100%: Rs=L.sub.1 -L.sub.2 /L.sub.1, where L.sub.1 is a length of a label film peeled from the container and L.sub.2 is a length when the peeled label film is brought to equilibrium at the temperature (T.sub.1) described above. In this manner, crease and swelling of the label during labelling operation inside the mold can be prevented and adhesion and peel-resistance between the label and the container outer surface can be improved.

Abstract: A process for preparing structural, heat-insulating shaped bodies which does not necessarily require the use of a foamed heat-insulating material obtained by the use of blowing agents belonging to the class of chlorofluorocarbons. The process includes inserting a heat-insulating pre-molded core inside a tubular element made from an extruded thermoplastic polymer; placing the extruded tubular element containing the pre-molded core into a blow-molding mold; and molding the tubular element into a shell by blow-molding. By subsequent mold closure, the shell adheres to the pre-molded core. An alternative process is disclosed for adhering the tubular element and pre-formed core by closing the mold and drawing a vacuum within the tubular element.

Abstract: A process for installing a liner in a generally horizontal pipe section includes the steps of: providing a hollow generally cylindrical folded pipe liner; pulling the folded liner through the pipe section leaving end sections of the liner extending from the upstream end and the downstream end of the pipe; pulling an air hose and a steam hose through the folded liner from the downstream end to the upstream end; providing a floating plug assembly including at least two disk shaped expanders; attaching the steam hose to the floating plug assembly downstream of the disk shaped expanders; attaching the air hose to the floating plug assembly upstream of the disk shaped expanders; inserting the floating plug assembly into the liner at the upstream end; and providing steam to the steam hose and cooling air to the air hose, while pulling the floating plug assembly through the liner to progressively heat the liner to a softening point downstream of the disk shaped expanders, and expand the liner to fill the pipe and co

Abstract: This invention relates to liners containing contaminants, such as styrene, and to methods for lining pipes, such as sewer pipes with liners containing contaminants, such as styrene. In one embodiment, this invention provides a liner and lining method that reduces contamination of the ambient with contaminants from the liner and/or the lining process, such as styrene. In the case of sewers, the carrier pipes lined may be, for example, PVC, clay or concrete, but pipes of metal or other materials, such as asbestos, may also be lined with the liner and lining method of this invention.

Abstract: A method of manufacturing an article having a substructure with a wall having first and second wall surfaces and a molded layer along the first wall surface. The substructure is supported in a tool having first and second die surfaces on either side of the wall. The first die surface is spaced apart from the first wall surface and the second die surface is spaced apart from the second wall surface. A moldable material is injected between the first die surface and the first wall surface under conditions causing said material to exert a force on the wall. The second wall surface is contacted with a fluid under sufficient pressure to create a force on the wall that offsets the force exerted by the material whereby the wall is supported against deformation.

Abstract: A process for producing a blow molded article, in which a parison is disposed between an outer face-forming mold section having an air bleeding hole and a bottom face-forming mold section and adjacent said bottom face-forming mold section. A resin film is disposed between the parison and the outer face-forming mold section. Then the outer face-forming mold section and bottom face-forming mold section are closed. Then air is blown into the parison to inflate the parison to form the end product and simultaneously to mold the resin film and the end product in an integral relationship with each other.

Abstract: A method for the manufacture of panel heat exchangers from thermoplastic polyamides. At least one sheet is coated with a coating that facilitates bonding of the polymer to itself under the influence of heat. Two sheets, at least one of which has been coated, are placed between moulds in a press. At least one of the moulds has grooves corresponding to the pattern of fluid flow passages to provided in the panel heat exchanger. The moulds are heated and an inert gas e.g. nitrogen, is applied and passed through the fluid flow passages, to assist in the formation of the passages and to remove any voltatile material from the coating. The preferred coating is benzyl alcohol, phenol and polyamide. The heat exchangers may be used in a variety of end-uses, especially in automotive end-uses.

Abstract: A fiber reinforced structure having a hollow blow-molded core and a method for manufacturing the same. Bulk fibrous material is dispensed between two die pieces of a mold. A blow-moldable plastic parison is extruded within the fibrous material. The mold is closed, pinching the parison closed and detaching the bulk fibrous material from the structure. The parison is inflated thus forcing the fibrous material against the interior mold walls. Liquid resin is injected into mold and impregnates the fibrous material. After curing, the finished reinforced structure is removed from the mold.

Abstract: A molding including a hollow molding body, and an ornamental film layer adhered on the upper surface and the side surfaces of the hollow molding body. The manufacturing process of the molding substantially comprises the steps of forming the hollow molding body by a blow molding method, and adhering the ornamental film layer on the hollow molding body. The adhesion of the ornamental film layer is achieved during formation of the hollow molding body.

Abstract: A method of forming a suture needle holder for a suture needle. A suture needle is placed in a trough cut into the surface of a die. This trough intersects a cavity within the die. A sheet is placed onto the surface of the die after the needle is placed in the trough. The sheet is then thermoformed into the cavity to form a pedestal around the needle. During thermoforming the needle is captured by the sheet and a slot is formed about the suture needle.

Abstract: Improved resin compositions for use in multiple cavity stretch blow molding processes comprising: (a) a propyleneethylene copolymer resin including from about 5% to about 15% of a second stage polymer characterized by a cycle time of T.sub.1, when used to produce containers in multiple cavity stretch blow molding processes; (b) from about 0.1% to about 1.0% of a nucleating agent prepared by irradiating in air a mixture of a propylene homo or copolymer and about 500 to about 3000 ppm of antioxidant with a sufficient amount of ionizing radiation to cause said nucleating agent to have a xylene insoluble content of at least 30%. The improved resin composition is characterized by a cycle time of T.sub.2 when used to produce containers in multiple cavity stretch blow molding processes such that the ratio of T.sub.2 /T.sub.1 is less than 0.95.

Abstract: A miniaturized sensor element is prepared using a capillary having first and second ends with a channel therebetween. One of the ends is closed while the other is open. Near the closed end, the capillary material which softens when heated, is heated and gas is supplied to the open end. This expands a chamber near the closed end which can be shaped and sized by moving the point of heating and varying the gas supply into the channel. The initially closed end is then opened and the channel inverted. The initially open end is then closed and again the capillary is heated and gas is supplied to form and shape a second chamber in the channel. After this, the closed end of the channel is again opened and both now open ends are smoothed to complete the capillary for use as part of a miniaturized sensor element.

Abstract: The vessel portion of a gas-tight container suitable for packaging fresh foods is produced as a composite of paperboard and polymer film. A pair of folded paperboard blanks, pre-cut and pre-formed, are inserted into the opposite halves of split mold elements to a blow molding machine. Vacuum orifices in each mold half unit temporarily secure the position of a respective paperboard blank. The paperboard lined mold halves are closed upon a hot, extruded parison of malleable polymer leaving an end portion of the parison tube projecting from the closed mold unit. A fluid conducting needle penetrates this projected end portion to inflate the parison with an apppropriate blowing gas. Such inflation expands the malleable polymer, seamlessly and creaselessly, into the internal corners and crevices of the folded paperboard blanks. Following chilling, the mold unit is opened and the pair of paperboard blanks are ejected as a singular unit, joined by a molded flange of the continuous polymer film.

Abstract: In a tube eversion apparatus a first chamber in which the eversion pressure is developed is controllably sealed by a sphincter-type valve, the valve being in turn actuated by pressure developed in a preferably separately controllable and adjustable second chamber, another chamber preferably being provided above the sphincter-type valve for containing a supply of liquid and limiting turbulence from any escape of fluid past the sphincter-type valve, the other chamber also providing apparatus for supplying heated fluid to a lay-flat hose adapted to be pulled through the sphincter-type valve by the tube being exerted. Use of the improved apparatus involves appropriate modifications of the usual eversion process involving applying and controlling the everting pressure and the pressure exerted against the sphincter-type valve by the fluid in the second chamber.

Abstract: An apparatus for the preparation of a vessel having a handle, which includes an injection mold having a cavity for forming a handle having an endless holding portion and an endless attachment portion; an injection molding mechanism for injecting a resin for the handle into the cavity of the injection mold; a blow-forming or draw-blow-forming split mold having a parting surface that can be closed, cavity assembly which is arranged in the split mold plane-symmetrically with the parting surface and includes an inserting cavity for containing the handle therein, and a forming cavity which has a neck-forming cavity, a barrel-forming cavity, a closed bottom-forming cavity, a recess-forming cavity formed at a part of the barrel-forming cavity so that the diameter of a deepest part of the recess-forming cavity is substantially equal to or slightly larger than the diameter of the neck-forming cavity, a projection-forming cavity for forming a projection to project and extend through the attachment portion almost to the

Abstract: A process for injection molding a thermoplastic backing (12) or other synthetic resin to a carpet layer (14) by suspending the carpet layer (14) between two mold halves (46,48), injecting a thermoplastic resin into the mold, and injecting an inert fluid such as nitrogen into the mold at a relatively low pressure to assist in distribution of the thermoplastic resin throughout all points of the mold. The invention also relates to a synthetic resin backed carpet, which resin backed carpet may constitute a vehicle dashboard (10). The vehicle dashboard (10) can include an internal runner or rib (16) which has a hollow portion (52) formed substantially along its length, the hollow portion (52) being formed by injection of the inert fluid during the injection molding process.

Abstract: A method and device for manufacturing in accordance with the blow-moulding process a container with connecting bottom, top and side walls from plastic material, wherein a parison B is arranged at predetermined temperature in a closable open mould 1, the mould is closed, pressure medium is fed into the parison B and the finished container is removed from the mould after cooling and opening, wherein prior to closing of the mould the parison is held around at least two disc-shaped elements 5,6 which are placed at a mutual interval and which are clamped fixedly between the mould elements when these are closed prior to pressure medium being supplied, and wherein the clamping action is exerted in axial direction of the parison in order to enclose the discs in the bottom and top walls 23 for forming of the container 1, such that the discs lie directly against the top and bottom wall of the container, and an element 31 like a stirring member extending over the full length of the container can be arranged between thes

Abstract: A method for making a multiple compartment container by providing a mold for defining an outside contour surface of the container; providing a partition member; locating the partition member within the mold; the mold making localized contact only with the partition member for uniformly spacing an edge profile of the partition member from the outside contour surface between adjacent compartment regions of the mold; feeding a plastic material simultaneously into each of the compartment regions of the mold; and forming the plastic material against the outside contour surface of the mold and against opposite sides of the partition member, the plastic material totally enclosing the partition except to the extent of the localized contact with the mold, the partition member being retained between adjacent compartments of the solidified container following removal from the mold.

Abstract: A method for producing a high shock-absorbing automobile bumper with a smooth outer surface. The method includes the steps of loading a preformed surface skin member into a blow mold, and then blowing a parison in the mold so that the blown parison is bonded to the surface skin member. The result is a hollow cushioning body firmly bonded to the surface skin member.

Abstract: A foot-support element such as an insole or a part of an insole is provided with a checkvalve through which it can be selectively inflated, the top and bottom walls of the insole being bridged by partitions which retain the shape upon pressurization. The insole is formed with upper and lower parts in upper and lower die members working together with an intermediate die member which, upon removal, allows the upper and lower die members to be brought together to fuse the parts of the insole together.

Abstract: A method of producing a blow molded product. The method includes preparing a tubular part having a groove at a portion that is to be embedded in a body portion. The groove is formed in a peripheral edge portion of a hole in a manner so as to surround the hole. A thermoplastic filler is filled in the groove over the entire area of the groove. The tubular part is then set in a blow mold as an insert. A parison is then expanded within the mold while the temperature is maintained at a level higher than the softening temperature of the filler.