Abstract: The present invention relates to an improved container for citrus juice and other liquids. The container utilizes a paperboard barrier laminate for the containment of essential oils and the prevention of losses of Vitamin C. Also disclosed is a process of making the laminate. The laminate makes use of a layer of a heat-sealable ethylene vinyl alcohol copolymer to enhance the barrier properties of the laminate.

Abstract: A process for the preparation of a multilayer plastic container in which an inner and an outer layer, one of which is in the melt phase, are introduced into an opened mold. Before the mold is closed, the inner layer is inflated by a pressurized medium until the facing surfaces of the inner and outer layers are in contact over almost all their respective surface areas. The mold is then closed and the first and second layers are forced against the mold wall by a pressurized medium.

Abstract: A method of making tubular composite structures that simplifies vacuum bag sealing. The method comprises disposing a prepreg structure within a tool that has at least one hole. The prepreg is disposed adjacent a mandrel. The mandrel comprises an inner bag containing a solid filler core that comprises about 75% to about 95% of the volume of the inner bag. The hole is enclosed with a vacuum bag thereby forming a void space between said vacuum bag and said prepreg. The void space is evacuated. The vacuum bag applies a predetermined pressure to the inner bag thus causing the inner bag to apply a substantially uniform predetermined pressure to the surface of the prepreg. The prepreg is exposed to heat.

Abstract: A float switch assembly for selectively energizing and deenergizing a fluid pump or other electronic equipment responsive to the rise and fall of a fluid level within a reservoir and a method of manufacturing or assembling the float switch assembly. The assembly includes a hollow tube having an open end wherein a mercury tilt switch is fixed. A plurality of conductors covered with a non-conductive material extend within the tube open end and are connected to the switch so that a current path may be provided between the conductors responsive to the angle of the switch. Ridges are provided on the outer surface of the tube near the open end and, a float bulb is provided substantially surrounding the tube below the ridges and sealingly connected upon the ridges. A potting epoxy compound surrounds the switch and the conductors within the tube so that electrical contact with a fluid through the open end is prevented. A cap is placed on the tube open end and is locked into place.

Abstract: An air cleaner and method of making same, the air cleaner comprises: a one piece, moulded housing, including domed first and second outer portions integrally formed about a common circumferential first edge, defining therein a chamber, an inlet and an outlet extending therefrom in communication with the chamber. A panel filter is secured within the housing, during the moulding thereof, at the common edge for dividing the chamber into first and second aerodynamically shaped compartments in communication with the inlet and outlet respectively.

Abstract: A method of manufacturing interior trimmings characterized in that an integral portion is extended from the circumferential rim of a skin material in die half, that the substantially whole of this extended portion is sandwiched and fixed between a holder member and that face of the die half which is combined with that of the other die half, that the paired die halves are thus combined with each other to mold a resin body, and that when the resin body thus molded is divided, the extended portion of the skin material is folded round the divided end of its corresponding resin body and fixed to the inner face of this resin body.

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 of producing a fiber reinforced plastic billiard cue which includes a tip end portion and a butted portion by forming an open-ended tubular tube of fiber reinforced plastic; securing joining devices in one open end of the tubular tube; placing the tubular tube in a cavity of a mold corresponding substantially to the size and shape desired of the billiard cue; heating the mold under a predetermined temperature for curing the tubular tube; applying compressed gas through the other open end of the tubular tube to force the shell thereof into contact with the inner surface of the cavity of the mold; and releasing the compressed gas from the open end of the tubular tube.

Abstract: A method of producing a container of plastic material capable of being oriented and/or crystallized, in which a substantially tubular blank is, in at least two mutually consecutive and mutually separate shaping phases or shaping stages, reshaped into the container. The blank is reshaped into the container by mechanical forming elements (34,42) which stretch the material in the axial direction of the blank, and in the circumferential direction of the blank. By stretching the material in each separate shaping stage to a regulated degree, there will be accumulated in the material a total stretching corresponding to the requisite stretching in order to impart to the material the desired and predetermined orientation and thereby the requisite strength properties.

Abstract: According to the method of coating the internal surface of a pipeline with a cement-sand mortar, a layer (4) of the mortar is formed on said surface and is pressed and held by a flexible hose (5). Before the flexible hose is pressed to the mortar layer (4) the flexible hose (5) is turned out and placed simultaneously with the formation of the mortar layer. The device effecting the method as claimed has a cement-sand fed system (11), a piston (3) arrnged in the pipeline (1) with an annular clearance (12) to distribute the mortar layer on the internal surface of the pipeline, a chamber (13) accommodating the flexible hose (5) and communicating therewith by a flowing medium feed system (15), said flowing medium serving as a means for feeding, turning out and pressing the flexible hose (5) to the mortar layer (4) formed on the surface of the pipeline.

Abstract: Method for (1) extrusion coating flexible, tubular-shaped articles without producing fragile edges or weakened areas in the coating or in the material of the article and to coated articles manufactured thereby; (2) method for extrusion coating and laminating tubular-shaped articles; and (3) flexible, multilayer articles of flat or tubular shape composed of a plurality of layers of plastic fabric or other material laminated together by one or more intermediate, fully embedded barrier layers. The method comprises covering the surface of the flexible, tubular-shaped article in at least three contiguous sections around the circumference of the article to provide a substantially continuous covering without weakened areas through which leakage can occur.

Abstract: When pipes are provided with comparatively rigid linings, the gaps which tend to appear between the pipe and the lining along the length thereof, and through which gaps gaseous type contents tend to escape, are sealed by providing between the pipe and the lining radially expandable sealing rings spaced along the length of the pipe, those rings compressing when the lining is in place and only partially expanding if the lining tends to separate from the pipe, thereby to provide a series of annular seals along the length of the pipe. The sealing rings may be positioned within the pipe before the lining is applied or may be initially secured to the lining and moved into place with the lining.

Abstract: An apparatus for molding a sleeve on a corrugated pipe having an inner wall and fusion-bond ridges. Two clamps can close to engage several of the ridges. One to three of the ridges project into a molding space between the clamps. A core is inserted into the pipe and closes the molding space. Hot pressurized resin softens and collapses the projected ridges and fusion bonds the pipe to the sleeve portion of the molding space.

Abstract: A heat shapable resin laminate sheet, composed of several heat-bonded support webs impregnated with duroplastic binders, the deformation temperature to be utilized in shaping the laminate sheet being higher than the temperature utilized in molding it, which comprises a number of individual laminations, each of which is formed separately of one or more support webs impregnated with duroplastic binders and layers of thermoplastic binders arranged between the individual laminations, the melting point temperatures of the thermoplastic binders being equal to or lower than the deformation temperature, and a process of shaping the laminate sheet.

Abstract: In a process for making a gasket with a tubular shape, a tubular blank of elastomeric material is extruded and zones are marked along its length, the zones corresponding to a location along the length of the gasket which is to undergo a change of shape, dimension, or orientation through a shaping operation. The shaping operation involves a preliminary step of attaching a U-clip to the blank and introducing the blank, with the U-clip attached to it, into a shaper passage which has a guide element extending into the passage, and guiding the blank through the shaper passage while the guide element extends into the U-clip.

Abstract: In an in-molding process of forming plastic containers wherein a label is located inside the blow mold and then a parison is blown outwardly in the mold so that the heat from the parison and the pressure generated by the blow medium activates adhesive on the label to bind the label on the blown container side wall, the method of eliminating undesirable label panel deformation which comprises controlling the moisture of the label such that the shrinkage of the label matches the shrinkage of the plastic side wall against which the label is placed.

Abstract: A resin transfer molding system and method provides for injecting resin into fibrous material disposed on the inner surfaces of a pair of mold pieces. The mold pieces are shaped to form a structure with two sections which extend in at least two different planes. An inflatible member in one of the sections forces a second pre-inflated member into the second section prior to the injection of resin into the fibrous material.

Abstract: An air cushion shoe sole which is preferably blow molded of elastomeric material and has at least one cavity which in cross-section is substantially rectilinear. The cavity has a number of depressions and each cavity has an air valve for introducing a shock absorbing material, namely gas, liquid, or a combination thereof into that cavity. Each air valve has means in it for automatically bleeding off a portion of the shock absorbing material introduced into the cavity once the pressure of that material reaches a predetermined level.

Abstract: A process using molds for curing a composite skin-stiffeners assembly from fiber material impregnated with a resin. This process allows molding and co-curing of single-skin type panels with integral stiffeners, allows stiffeners of variable heights, thicknesses and widths, allows substantial freedom in the layout of stiffeners, and allows even integral cross-stiffeners. Bonding and mechanical fasteners are also dispensed with. This process is further characterized by providing a stiffener forming mold part having a corrugated face, laying composite material over the ridges defined by the corrugated face to form stiffeners of open cross-sectional shape and interspacing gaps between them in bonding contact with skin forming material, and co-curing of the skin-stiffeners assembly.

Abstract: In disposing an insert or inserts within a blow-molded product, before the blow molding step is started, an inner supporting device supporting the insert at an end thereof is inserted into a parison and then the mold is closed so that the insert is made into contact with the parison. Thereafter the blow molding is effected so that the insert is securely welded to the parison.

Abstract: A foam acoustic absorption member having a stabilizing layer with perforations and, in order to obtain a simple, stable structural shape of homogeneous resistance to flow, the stabilizing layer (2) is a wide-side wall of a hollow body (K) which wall is pressed, under thermal deformation, against the foam layer (1), the openings in said hollow body consisting of holes (9) punched from the foam side.

Abstract: Disclosed is a coated oriented plastic vessel formed by subjecting a parison, preform or sheet comprising a molecularly orientable thermoplastic resin substrate and a coating layer of a vinylidene chloride copolymer formed on at least one surface of said substrate to a draw-molding operation such as biaxial draw-blow-molding or draw-forming, wherein the coating layer of the vinylidene chloride copolymer has such a molecular orientation tht the sum of two-dimensional orientation coefficients (l+m) in the axial direction and circumferential direction is at least 0.03 as measured according to the polarized light fluorometry and the coating layer is not substantially peeled at the low-temperature burst test conducted at -5.degree. C.

Abstract: A plastic container with an integral handling ring is formed in a mold having a pair of side sections movable toward each other and a pair of co-planar end sections movable toward each other and toward said side sections, by placing molten extrudate in a mold between the side and end sections, so that a handling ring can be formed and compression joined to the container at the same time the container is being formed by blow-molding.

Abstract: Concrete elements, such as blocks or bricks, are molded or cast by forming in a primary mold cavity a secondary mold made of a portion of a thermoplastic film which has been contacted with a flat heater surface to assure a uniformly heated film portion which is then sucked into the primary mold cavity without wrinkles and filled with concrete mix. The secondary mold with the concrete mix in it is withdrawn, for example, sucked out of the primary mold cavity well before any effective hardening of the concrete mix, so that curing and hardening takes place in the secondary mold outside the primary mold cavity. This early withdrawing is important because it avoids expansion of the curing mix in the primary mold, whereby removal from the primary mold is facilitated. Additionally, the early removal with the aid of the secondary mold assures a more efficient use of the primary molds which are used again while the hardening is still going on in the secondary mold.

Abstract: The necks 10 of round bottomed plastic bottles 11 are fed into peripheral notches 9 of an upper turret plate 6, and stabilizing cups 47 are fed onto support plates 49 of vertically movable centering sockets 45 slidable in a lower turret plate 7 and disposed coaxially below the bottles. Pressurized gas in supplied to the bottles by vertically reciprocable stopper posts 23 to implement monitored seal testing, and while the bottles are stiffened by the gas the cups are adhesively applied from below. The various movements are synchronously controlled by rollers 33, 42 riding on circular cams 35, 44.

Abstract: A sonobuoy having a terminal weight and sensor for deployment beneath the surface of the water after the buoy has been launched from an aircraft and impacted the water. A circuit assembly and antenna for processing output from the sensor and for transmitting a signal is provided. A cable for connecting the sensor and circuit assembly is also included. A housing for the sonobuoy is a blow molded seamless thermoplastic shell which surrounds the circuit assembly.

Abstract: An internal lining for ducts (C) is provided by introducing into one end of the duct an assembly (E) which comprises a sleeve (5) and an inflatable system (2) and which is provided with heating means for applying a sheath (1) impregnated with a resin against the inner wall of said duct (C). After partial polymerization at least of the resin, the sheath (1) adheres to the inner wall of the duct. The system (2) is then deflated, the heating stopped and the assembly (E) withdrawn from the duct. With the length of the duct a multiple of the length (l) of an assembly (E), the operation is repeated by introducing into the duct successively a multiplicity of sheaths (1) until the inner wall of the duct (C) is provided with an internal lining over the whole of its length.

Abstract: The molded shell of an article, while still warm from being molded, and while remaining within the mold or fixture in which it has been created, for instance by blow-molding of a parison of polyolefin plastic material into contact with the mold walls, is filled with a fluid, settable foaming plastic material, for instance polyurethane. This may be done by injecting the foaming mixture directly into the cavity of the shell. In this manner time, labor and materials are saved, and the resulting product is characterized by better adhesion of the foamed core to the internal wall surface of the shell.

Abstract: Flexible plastic such as polyethylene is reinforced by molding the plastic over a reinforcing member. The reinforcing member is provided with at least one undercut between the plastic and the mold, and the plastic is molded into the undercut so that the plastic and the reinforcing member are interconnected.

Abstract: A method and apparatus for manufacturing a hollow plastic product is provided. In accordance with one aspect, into a mold half having a tubular groove portion and a projecting groove portion which projects outwardly from the tubular groove section is supplied a parison into the tubular groove portion and a clump of molding material into the projecting groove portion. When blow molding is carried out by introducing a pressurized gas into the parison, the clump becomes integrated with the parison thereby providing a hollow plastic product of unitary structure. In accordance with another aspect of the present invention, a parison extrusion nozzle is provided with at least two passages each of which is connected, preferably through a valve, to a corresponding dispensing unit for dispensing a desired molding material. A control unit is provided as connected to each of the dispensing units to control the supply of molding material so that there is obtained a parison having regions of different molding materials.

Abstract: A hollow plastic baseball bat or the like has a preprinted plastic sleeve shrink fitted onto a portion of the bat to provide the bat with a metallic appearance.

Abstract: Pipelines for transporting sewage, water, slurries, liquid and gaseous hydrocarbons, and like materials are interlined with a composite tubular lining having an inner skin layer and a foamed layer contiguous with the inner skin layer. The foamed layer is either contiguous also, along its opposite surface, with the inner wall of the pipe or may be spaced therefrom by an outer skin layer of the composite lining. The lining may be applied either before the pipeline is placed into service or afterward, whether in situ or removed for maintenance or repair. For application in situ the lining is preferably more flexible than will suffice for insertion into new pipes.

Abstract: A profiled strip, particularly for application to the exterior of an automotive vehicle, is a hollow plastic blow molding with a rear wall for application to the surface of the vehicle and an exposed front wall in which there is a strip of transparent material enabling viewing of the interior of the hollow profiled strip. A decorative trim strip is disposed within the hollow of the molding and is visible through the transparent strip. To manufacture the profiled strip, a tubular extruded profile is extruded around the decorative strip. The decorative strip has adhesive on one surface thereof for adhering to the front wall of the profiled strip. The rear wall of the profiled strip has openings through it through which air is blown for blowing the decorative strip against the front wall for adherence thereto.

Abstract: An injection mold for producing a plastic injection molding having a layer of plastic molding material on the front of a metallic support. The injection mold has a first mold half over the front of the support with a mold cavity therein for holding the injected plastic material which forms the layer on the front of the support. The injection mold has a second mold half at the rear of the support with another recess for being filled with pressure fluid for pressing the front of the support against the first mold half, which seals the cavity for the injected plastic molding material to prevent leakage and to keep the line of the plastic material layer around the mold cavity on the support sharp. The pressure fluid may be supplied to the rear of the support before the molding composition is injected into the cavity at the front of the support. The pressure fluid at the rear of the support may be the same material that is applied on the front of the support.

Abstract: A process of manufacturing a ski, particularly a laminated ski, which is composed of a plurality of components, and a ski manufactured by that process. In the process, the components of the ski are placed into a mold, which is adapted to be evacuated, and the mold is subsequently evacuated. A liquid binder, such as a liquid resin, is supplied to the mold during or after its evacuation. Air is sucked from the mold at one end of the longitudinal extent of the ski. The liquid binder is supplied to the mold at the other end of the longitudinal extent of the ski. In the finished ski a strip of solidified binder extends in at least one vertical or horizontal longitudinal plane of the ski, preferably in a central longitudinal plane of the ski, over at least part of the length and preferably over at least one half of the length of the ski.

Abstract: A method for seating a gasket in a plastic pipe bell is disclosed which includes providing a peripheral groove in a belling mandrel and seating a specially designed hard plastic ring in the groove. The hard plastic ring is molded to provide exterior ramps for forming an annular pocket in the pipe bell and is inwardly configured to provide a secure seating surface to receive and retain a resilient gasket thereon. The mandrel is urged into a preheated end of the pipe and vacuum forces are employed to pull the end of the pipe about the periphery of the mandrel and tightly against the exterior ramps of the hard plastic ring for forming the bell shape. Upon sufficient cooling of the pipe end, the mandrel is withdrawn and the plastic ring remains encapsulated within the bell shape. Upon removal of the mandrel, a resilient gasket is then seated within the bell in intimate overall contact with the seating surface of the plastic ring.

Abstract: In the forming of an article by blow molding a parison into conformity with a cavity defined by a partible a method and appartus which comprises positioning a label of flexible material on each section of the mold, each label having a width in a circumferential direction such that a portion of one axial edge of each label extends beyond the side edge of the cavity forming portions of the section of the mold and the other axial edge, moving the mold sections toward one another so that they close and define the mold cavity, deflecting the edge of each label radially inwardly before the molds close such that as the molds close the deflected edge will overlap with an adjacent edge of the adjacent label, and blowing the parison into conformity with the cavity such that the edges of the two labels overlap and register to define a continuous label about the article.

Abstract: The invention provides that in inserting a resin impregnated liner into a pipeline or passageway and shaping same to the passageway surface, followed by curing of the resin to form a rigid lining inside the pipeline or passageway, there are placed in the passageway reinforcing circumferential coils or members which bond to the liner and provide extra resistance to compressive hoop stress.

Abstract: In a submarine cable optical fibre regenerator housing a copper tail pipe (optionally with a brass end section incorporating an anti-extrusion profile for fitting inside a gland) is provided with a tight fitting length of thermoplastics sleeving by collapsing a thermoplastics preform down onto the tail pipe using heat and air pressure applied to the outside of an elastomeric tube into which the tail pipe and preform have been inserted.

Abstract: In producing hollow bodies by blow molding from thermoplastic material, a preferably tubular preform is firstly formed, and is then expanded within the blowing mold under the effect of an inert gas under high pressure, until it bears entirely against the inside surface of the blowing mold. Thereafter, a reaction gas such as fluorine is introduced into the hollow body under a considerably lower pressure, while the hollow body is still in the mold, to treat the internal surface of the hollow body to render it impervious to gas and/or liquid. After the reaction has elapsed, a flushing and cooling gas is introduced into the hollow body and is then removed from the blowing mold after the hollow body has sufficiently set.

Abstract: A container case includes a cover, a base and a hinge which pivotally joins the cover and the base on a corresponding side of each. The cover, base and hinge are formed by blow molding. The cover and base are double-walled in construction and identical so that they can be formed from the same mold. Each of the cover and base includes cylindrically-shaped, hollow extensions which form portions of the hinge. When the case is assembled, alternate hinge portions of the cover and base are aligned end-to-end along a common axis and cooperatingly mate to form the full hinge. The hinge is drilled to form openings in the end surfaces of the mating hinge portions which communicate with the interior, hollow areas of the hinge portions to form a single bore through the entire axial length of the hinge. A polyethylene pin is received by the hinge bore to interlock the individual hinge portions.

Abstract: At the time of blow molding of a frame made of synthetic resin in the shape of a hollow plate, a molding process of the frame of a seat for vehicles which comprises a reinforcement plate in the shape of with leg portions substantially equal to the thickness of the frame plate is mounted within a molding die, thereby forming said reinforcement plate so as to be embedded within said frame. Furthermore, the upper and lower plates of the frame may be connected to each other by means of the leg portions of said reinforcement plate in the shape of so that a frame with a closed construction may be formed.

Abstract: To provide hollow plastic bodies, e.g. bottles, with an inscription, a sheetlike object (23), e.g. a label, is pressed at least in part against an unfinished piece (26) while still being in deformable condition. This unfinished piece (26) is then brought, together with the preliminarily attached label into a blow mould (15). In blowing the bottle (26') the label (23) is strongly pressed against the bottle wall, because the label is held by the inner wall (31) of the blow mould.

Abstract: A method of lining a pipeline or passageway with a flexible tubular liner. The liner is caused to evert in the pipeline by a fluid under pressure, and a former is used to smooth out the everting face of the liner and evenly apply resin over the everting face.

Abstract: A heat cured exhaust seal, adapted to be interposed between a pair of confronting pipes in sealing relationship therewith, is formed of wire mesh having openings between the wires thereof and a mixture of metallic fibers, non-metallic filler, a thermally stable lubricant and resin binder, which mixture surrounds the wires and substantially fills the openings in the mesh and forms the seal. The method of forming the seal includes placing a preform of wire mesh into a die cavity, forming a powder mixture of metallic fibers, non-metallic filler, a thermally stable lubricant and a resin binder, placing the powder mixture into the die cavity, pressing the wire mesh and powder mixture to the final size and shape of the seal and curing the seal at an elevated temperature.

Abstract: A polyester or copolyester container is made with a heat activated high barrier copolyester label applied to the container sidewall. The process for producing the high barrier container that is a hollow polyester or copolyester body with a barrier label effectively applied to its outer sidewall, includes forming the container by an extrusion blow method, injection blow method, orientation-blow method, or orientation blow-heat set method and applying the barrier label via an "in-mold" technique utilizing a heat-activatable high barrier copolyester resin as the adhesive.

Abstract: An apparatus for forming a tube including a base, a pair of legs secured to the ends of the base, and a holder base attached to the base. A tube holder for holding the tube is connected to the holder base. The tube holder has a structure defining a pair of diametrically opposed openings. A pair of soldering irons is oppositely secured with respect to each other in proximity to the top of the pair of legs. Each soldering iron has a hot end that generally registers with one of the opposed openings such as to be in close proximity to the tube being held by the tube holder in order to soften the material of the tube in the area contiguous to the openings. Power is conducted and supplied to each of the soldering irons. Vacuum is drawn on top of the tube to suck or pull inward the tube in the spots being softened from the heat of the pair of soldering irons.

Abstract: In the forming of an article by blow molding a parison into conformity with a cavity defined by a partible a method and apparatus which comprises positioning a label of flexible material on each section of the mold, each label having a width in a circumferential direction such that a portion of one axial edge of each label extends beyond the side edge of the cavity forming portions of the section of the mold and the other axial edge, moving the mold sections toward one another so that they close and define the mold cavity, deflecting the edge of each label radially inwardly before the molds close such that as the molds close the deflected edge will overlap with an adjacent edge of the adjacent label, and blowing the parison into conformity with the cavity such that the edges of the two labels overlap and register to define a continuous label about the article.

Abstract: A high-pressure container, and a method and apparatus for making the same, is disclosed having a top portion defined as an injection molded portion. The injection molded portion is provided with rings which are fused to the other portion to provide a strong mechanical interlock therebetween. The top portion is pre-fabricated and then the second portion is blow molded around the top portion.

Abstract: An elastomeric bladder for dividing a pressure vessel into two chambers is formed in one piece and carries integrally at least one rigid element (18 or 19). A tubular blank bladder 10A of raw elastomer is shaped in a mould by fluid pressure applied to the interior of the blank while the rigid elements 18, 19 are clamped against the ends E1, E2 of the bladder valve and a vulcanization is performed whereby the rigid elements 18, 19 are bonded to the bladder.