Abstract: A method and a molding plant for manufacturing a storage container for storage of nuclear radiation material, the container having an inner container part of a first thermoplastic material, an intermediate container part of radiation inhibiting material on the outside of the inner container part, and an outer container part of a second thermoplastic material molded onto the outside of intermediate container part. First, second, third and fourth locations are present along a circular path.

Abstract: While a second layer resin is being charged, a movable platen is moved backward to reach a given movable platen position (S1) to enlarge the capacity of a second cavity. After the completion of charging of the resin, a toggle mechanism is promptly driven to reduce the second cavity capacity to reach a given movable platen position (S2), and after the lapse of a given time, the toggle mechanism is driven again to enlarge the second cavity capacity to reach a given movable platen position (S3). Thus, a high quality multilayer injection molded article which has small variations in the wall thickness, dimension, and mass and which is free from deformation or warpage can be stable obtained.

Abstract: A method of producing a throttle assembly. The method including inserting a first core into a mold portion to form a first throttle component cavity between the first core and the mold portion, providing a first thermoset plastic material into the first throttle component cavity to form a first throttle component, removing the first core from the mold portion while maintaining the first throttle component positioned within the mold portion, inserting a second core into the mold portion to form a second throttle component cavity between the mold portion, the first throttle component, and the second core, providing a second thermoset plastic material into the second throttle component cavity to form a second throttle component, removing the second core from the mold portion, removing the first throttle component and the second throttle component from the mold portion, and separating the first throttle component from the second throttle component.

Abstract: A method for manufacturing a separated tip catheter includes the following steps: positioning first and second cores in a cavity of a mold, the cavity having a substantially elongated shape and including a first end portion and a second end portion, wherein the first and second cores are oriented substantially parallel to each other; placing a sheet of material having a higher melting temperature than a molding material across the first end portion of the cavity; and injecting the molding material into the cavity of the mold.

Abstract: One-piece article obtained by injection moulding, with at least one injection point, said article comprising a main body (20), having a body volume defined by the space within a surface forming an outer envelope, and at least one hook (21), preferably a field of hooks, obtained from the same moulding of the main body of the moulded article, the hook or each hook having a stem of longitudinal axis and a catching part projecting laterally from the stem, characterized in that the volume of the hooks is substantially smaller than the volume of the body, i.e at least 100 times smaller, preferably at least 1000 times smaller, for example between 100 000 and 100 000 000 times smaller, than the volume of the body, and in that the width, or smallest transverse dimension, of the stems, measured transversely to the longitudinal axis, is smaller than the thickness of the main body, measured along the longitudinal axis of the stems.

Abstract: The preform is formed by an upper neck which maintains unchanged its form in the final object and a hollow body, joined to the neck. The method foresees the insertion, within a matrix cavity, of a metered body of polymeric material whose mass is metered according to a reference value, and the subsequent pressure insertion of a punch within the matrix cavity until it closes the mold's molding chamber, the punch conferring the shape to the inner surface of the preform and the matrix having an inner surface which confers the shape to the outer surface of the preform. According to the invention, in the molding of the preform, the error of the mass of the metered body with respect to the reference value is distributed in the hollow body, which undergoes a subsequent hot deformation until it achieves the final shape.

Abstract: This mould is of the type including a moulding cavity (10), and at least one panel (16, 18, 20) which is for separating the cavity into at least two moulding compartments (24, 26) and which is movable, between a position for separating the two compartments (24, 26) and a rest position, through an opening (22) which is provided in a wall (12) of the cavity (10). The mould further includes at least one shutter (32, 34) which is movable between an open position, in which the shutter (32, 34) is disengaged from the opening (22), and a closed position, in which the shutter (32, 34) closes at least a region of the opening (22).

Abstract: Injection molding of a part having a nonuniform thickness is provided. One disclosed embodiment of an injection molding device includes one or more side walls, a first mold surface intersecting the side walls and being stationary with respect to the side walls, and a second mold surface intersecting the side walls so as to define with the side walls and the first mold surface a cavity configured to receive a metered amount of injected molten thermoplastic material. The second mold surface is moveable toward the first mold surface in such a manner that a first end of the second mold surface moves a larger physical travel distance toward the first mold surface than does a second end of the second mold surface during a molding process.

Abstract: A molding apparatus includes a bottom platen, a bottom mold portion carried by the bottom platen, and a top platen overlying the bottom platen and the bottom mold portion. The top platen includes slots extending therethrough for receiving a molding material. The molding material is to be gravity deposited into the bottom mold portion. A top mold portion is carried by the top platen and is moveable between a molding material loading position and an article forming position. An actuator is coupled to the top mold portion for moving the top mold portion between the molding material loading position and the article forming position. The molding material loading position corresponds to when the top mold portion is non-overlying the bottom mold portion so that the molding material can be gravity deposited therein. The article forming position corresponds to when the top mold portion is overlying the bottom mold portion for molding an article.

Abstract: A method of moulding an object of indefinite length. A first portion of molten material is injected into a mould comprising a stationary platen and a moving platen and solidifies to form a first portion of solid material at a first position. The moving platen is moved in a given direction to open the mould and move the material in said given direction to a second position in communication with the mould. The moving platen is then moved in the opposite direction to close the mould. A further portion of molten material is injected into the mould and solidifies to form a further portion of solid material intimately bonded to said first portion. The steps are repeated to form an object comprising the first portion and further portions of material bonded together as a linear array of indefinite length.

Abstract: A method and an injection mold for the production of profiled and at least partially elongated components out of liquid or viscous solidifying molding compounds, by said injection mold, the molding compound being injected into the mold cavity and transported away under steady extension of the mold cavity and under steady elongation of the component to be formed after the initial filling of the mold cavity. The molding compound transported away is transported out of the mold while molding compound is continuously being injected until the forming component reaches its final length. The mold has at least one mold insert whose surface is part of the peripheral surface of the mold cavity and which is supported in the mold in a movable way in longitudinal direction of the component to be formed so that the mold cavity forming the component can be expanded to the desired size and shape of the component inside and outside of the mold by a movement of the mold insert.

Abstract: A mold and a method for producing two-color injection-molded parts involves simultaneous injection of two kinds of molding material, in which a pressure difference between two kinds of molding materials is induced so that one of the molding materials is infiltrated into and bonded to the other molding material during solidification. The method for producing two-color injection-molded parts may include simultaneously injecting a first material and a second material to a first gate and a second gate to be filled in a first cavity and a second cavity, and closing the second gate such that the first molding material, which is not solidified, pushes a slide mold provided between a first mold block and a second mold block using a holing pressure of the first gate and is infiltrated into an unsolidified layer of the second molding material and solidified.

Abstract: A method of molding a container closure providing selective fluid communication between an interior of a fluid container and an exterior environment, the method comprising: (i) configuring and closing a mold having a first cavity negatively defining a base of a container closure that includes a spout and a container mount, where the spout and container mount cooperate to define a conduit therethrough in fluid communication with an outlet orifice of the spout; (ii) injecting a first material into the first cavity to mold the base; (iii) cooling the first material in the mold to impart at least minimal rigidity to the base; (iv) reconfiguring at least a portion of the mold to define a second cavity adjacent to the first material, the second cavity negatively defining a cap covering the outlet orifice of the spout; (v) injecting a second material into the second cavity to mold the cap over the outlet orifice; (vi) cooling the second material in the mold to impart at least minimal rigidity to the cap; and (vii) r

Abstract: The method employs a stationary mold having depositing recesses equipped in its inside with a deposition element such as a target electrode, and movable molds made slidable. A primary molding is performed to form a body portion and a cover member to have joint portions around their opening. The body portion left in the vertically sliding mold is deposited after it was densely covered with the depositing recesses. Next, the deposited body portion and the cover member, as left in the molds, are registered and mold clamped, and the molten metal is injected to integrated the joint portions.

Abstract: The invention provides a mold insert system that includes an insert for insertion into an injection mold apparatus and an actuator. The insert includes a movable imprint plate with a predetermined pattern of protrusions configured to form grooves in an article molded by the mold apparatus. The insert also includes a stationary piece with a pattern of slots configured to correspond to the predetermined pattern of protrusions in the imprint plate. The actuator moves the imprint plate from a first position in which the protrusions on the imprint plate do not extend beyond the slots in the stationary piece to a second position in which the protrusions on the imprint plate extend temporarily beyond the slots in the stationary piece. An injection mold apparatus including the mold insert system, as well as a method of making a molded article including the mold insert system are also provided.

Abstract: An end plug (1) for insertion into an end of a paper roll includes an inner (2) and an outer piece (3), the pieces being rotatably attached to each other and prevented from axial movement in relation to each other by at least one protrusion (6) of one of the pieces running in an annular groove (7) in the other of the pieces. A method of manufacturing such an end plug is also disclosed.

Abstract: The invention relates to an injection molding installation with a fixed and a moveable machine clamping plate, and at least one injection unit as well as an injection molding device which is located between the machine clamping plates for producing profiled parts, elongated at least in sections, by means of closure-side components which are assigned to the one machine clamping plate, and nozzle-side components which are assigned to the other machine clamping plate, as well as a slide module which is located between these components and which has a slide which is arranged in a moveable manner on a closure-side or nozzle-side component, wherein said slide contributes to form an original mould cavity, and a drive module for controlling the movement of the moveable part(s) of the slide module, wherein the part is produced in the intended dimension and shape inside and outside the mold via the movement of the slide.

Abstract: The thermoplastic elastomer composition of the present invention comprises a thermoplastic elastomer which includes an ethylene•?-olefin copolymer and a crystalline polyethylene resin, wherein the crystalline polyethylene resin constitutes a three-dimensional network structure in a matrix formed by the ethylene•?-olefin copolymer, an organic or inorganic blowing agent and a nucleating agent, wherein the thermoplastic elastomer has a melt flow rate of 5 g/10 min or more at a temperature of 230° C. and a load of 10 kg, and a melt tension of 3.0 gf or more at a temperature of 210° C. and a pulling rate of 2 m/min. Also the foam injection molding method of the present invention is a method including injecting the above-mentioned composition into a cavity space of a metal mold and then expanding the cavity space to foam by opening the metal mold at a mold opening rate of 0.05 to 0.4 mm/sec.

Abstract: An in-mold coating method for molding a molded product with an excellent external appearance. A resin molded product is kept pressed against a mold cavity surface until immediately before coating. Mold-clamping force in a second step in which the shape of the resin molded product is fixed and that in a fourth step are selected so that the deformation of the mold cavity by the mold-clamping forces is substantially the same in the second and fourth steps. Even if the mold cavity deforms by the mold-clamping force in the second step, the mold cavity deforms similarly in the fourth step to provide a uniform coating thickness. Alternatively, a mold-clamping force smaller than that in the first step is selected for the second step to reduce the degree of deformation of the mold cavity and to achieve a uniform coating thickness.

Abstract: A method for manufacturing a separated tip catheter includes the following steps: positioning first and second cores in a cavity of a mold, the cavity having a substantially elongated shape and including a first end portion and a second end portion, wherein the first and second cores are oriented substantially parallel to each other; placing a sheet of material having a higher melting temperature than a molding material across the first end portion of the cavity; and injecting the molding material into the cavity of the mold.

Abstract: An injection-foaming method for a thermoplastic resin comprising using an injection unit 30 provided with a hopper 35, a plasticizing cylinder 31 and a screw 32, and a mold 10 having a mold cavity 10a of changeable capacity; filling the mold cavity 10a with a foaming-agent-containing melted resin injected from the injection unit 30; and then enlarging the mold cavity 10a for allowing the foaming-agent-containing melted resin to expand, wherein inclusion of a foaming agent into a thermoplastic resin is done by using a mixture of a foam nucleating agent and a foaming gas as foaming agent, feeding the mixture to hopper 35 or plasticizing cylinder 31 and screw 32 of injection unit 30 at a pressure of 0.1 MPa or more and less than 1.0 MPa, and contacting the mixture with a pre- or post-plasticized thermoplastic resin present in hopper 35 or plasticizing cylinder 31 and screw 32.

Abstract: A displacement-injection molding system utilizes a plasticizing vessel with cylindrical heat transfer cores extending into the cavity of the plasticizing vessel to efficiently heat polymer granules to their injection temperature and a variable volume mold utilizing back pressure to maintain the injected polymer under pressure. A plunger for ejecting polymer from the plasticizing vessel incorporates openings for receiving the cylindrical cores. The plasticizing vessel is preferably sized to receive at least two shot sizes of polymer material to permit continuous heating of the granules of plastic material between shots as additional granules are added to replace the ejected material.

Abstract: In accordance with the present invention, there is provided a method of forming a molded plastic article (2) having a second surface (56) with molded extensions (59), e.g., structural supports, such as ribs, extending therefrom, and a first surface (69) that is substantially free of sink mark defects. The method involves forming, from a first plastic material, a first molded section (50) having at least one molded extension (59) extending from the second surface (56) thereof. The molded extension (59) is formed in a mold recess (23) having a reversibly positionable slide (14) therein. After formation of the first molded section (50), the slide (14) is retracted to a second slide position (B) thus forming within the molded extension a retainer cavity (74) that is in fluid communication with an aperture (71) in the first surface (53) of the first molded section (50).

Abstract: The invention provides a foamed body of thermoplastic resin having a high expansion ratio, desired shape and cells of desired diameter, especially fine cells. The foamed body of thermoplastic resin is produced by filling the thermoplastic resin containing a foaming agent into a cavity 31 of a mold 2a and thereafter enlarging the cavity 31 to expand the resin. In this process, the cavity 31 is completely filled with the resin as melted and containing the foaming agent, then held in its shape as filled with the resin and enlarged to an increased final cavity width upon the average temperature filled in the cavity 31 reaching the range from the melting point of the resin to the melting point plus 30° C.

Abstract: The invention relates to a method for manufacturing at least partly plastic vehicle parts in a mold with at least one mold cavity, comprising the steps of: at least partly closing the mold, wherein the at least one mold cavity is brought in a first position by means of at least one movable wall part of the at least one mold cavity; introducing plastic into the at least one mold cavity; upon complete closure of the mold and/or movement of the at least one movable wall part, bringing the at least one mold cavity in a second position, the at least one mold cavity in the second position having a different volume than in the first position; all this in such a manner that by bringing the at least one mold cavity from the first into the second position, the plastic fills the respective mold cavity completely.

Abstract: In a method for producing flat molded plastic parts, for example panes, a mold is first filled completely with plastic material and additional plastic material is subsequently added, in such a way that the mold distends in a defined manner in opposition to the clamping force. The distension compensates for material shrinkage during a subsequent cooling operation, thus preventing sink marks and permitting the production of, for example, panes of high optical quality.

Abstract: A method and coating used to prepare a photochromically-enabled bifocal ophthalmic lens. The method and equipment includes injection molding a single vision lens, for example, from polycarbonate. The clamp opens vertically and the top insert is exchanged for a bifocal mold having a base curve similar to the single vision lens. The thermoset coating includes compounds from several acrylate classes, and is applied to the single vision lens. The coating may include a photochromic dye. The coating is also formulated to receive a photochromic solution through an imbibition process.

Abstract: A method of molding a minute shape, in which at least one of a pair of dies is provided with an uneven section of a minute shape on a molding surface thereof, clamping of the pair of dies is stopped immediately before the dies are completely clamped, a resin is injected into a cavity, and thereafter the dies are completely clamped to thereby transcribe the shape of the uneven section onto the resin includes preparing a plurality of transcription dies each provided with the uneven section on a molding surface thereof, heating one of the transcription dies which is not used to mold a product by a heating unit, and exchanging the transcription dies with each other, at a point in time at which molding is completed, to thereby mold the product continuously.

Abstract: A polarizing plastic lens comprising a polarizing film with low tendency to detachment from an optical resin layer. There is provided polarizing plastic lens comprising polarizing film constituted of a polyvinyl alcohol resin. Two optical resin layers of different thicknesses may be disposed on both surfaces of the polarizing film. The optical resin layers are formed by polymerizing a polymerization raw material composition in contact with the polarizing film. The polymerization raw material composition contains as one main component an isocyanated or isothiocyanated compound. The iscocyanate or isothiocyanate functional group reacts with the hydroxyl of polyvinyl alcohol resin of polarizing film to thereby form an urethane bond or thiourethane bond, so that the optical resin layers are strongly unified with the polarizing film.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. Both the first and second transparent layers define a plurality of spherical protrusions on an outer surface thereof distalmost from the light diffusion layer respectively. A method for making the optical plate is also provided. In addition, a direct type backlight module using the optical plate is also provided.

Abstract: A two-color molding method with a short cycle time and a multicolor molding method including that two-color molding method, whereby, by performing an elastomer molding step using a time Z from a time t2 to t7 in the range of the time Y needed for the shaped article takeout step (A and B) and mold closing step (C) in the time t1 to t9, it becomes possible to effectively use the time of the shaped article takeout step (A and B) and mold closing step (C) which could not be utilized at all for the molding process in the past for the molding process, whereby the cycle molding time X can be shortened.

Abstract: A process producing an in-mold coated molded product. The process molds a thermoplastic resin material under a mold-clamping pressure in a mold including a fixed mold part and a movable mold part each heated at a predetermined temperature, separates the fixed mold part and the movable mold part when the molded material surface is solidified such that it is durable to a pressure of injection and flow of a coating agent, and injects the coating agent containing a thermosetting resin material between an inner surface of the mold and the molded product obtained. The process also coats the molded product surface with the coating agent as the mold is re-clamped after injecting the coating agent, takes out the molded product coated with the coating agent when the coating agent is cured such that it is neither peeled off nor cracked by opening the mold, and re-heats the molded product after taking it out.

Abstract: A process for in-mold coating and a mold is disclosed. The process entails (i) obtaining a mold having at least two cavities, (ii) molding a thermoplastic substrate in a first cavity, (iii) introducing the substrate into a second cavity, and (iv) coating said substrate with lacquer, the coating being carried out under enhanced pressure.

Abstract: A method for the production of elongated profiles or ledges (21) out of solidifying compounds in a mold with at least one lower part and at least one upper part, the molding compound (20) being continuously injected into the mold cavity (4), with the injected molding compound (20) being transported away from the gating point(s) and out of the mold under steady extension of the mold cavity (4) and under steady elongation of the forming profile or ledge (21) by relative movement of mold components and wherein molding compound (20) is injected until the profile or ledge (21) reaches its designated length.

Abstract: Mold (20) for manufacturing plastic products provided with a bottom and a sidewall, wherein the mold comprises at least a first (21) and second (22) mold part which jointly define at least partly at least one mold cavity (100) and are movable in a first direction, wherein the at least one mold cavity comprises at least one first, in particular bottom-forming part (101) and one second (102), in particular sidewall-forming part, wherein on the first mold part at least one fixed wall part (24) is provided which supports a first movable wall part (20) which is movable relative to the respective fixed wall part (24) in at least a second direction which includes an angle with the first direction, wherein in said first movable wall part a second movable wall part (35) is provided, on the side facing the mold cavity, which is movable between a forwardly moved position and a retracted position relative to the first movable wall part.

Abstract: An injection molding apparatus (1), comprising at least one mold cavity (9) and injection means (15) for injecting plastic into said at least one mold cavity, wherein at least a base part (13) provided and at least one module and attachment means for attaching said at least one module (10,11) on and/or in said base part, wherein in said at least one module at least one said mold cavity is provided, with at least one inlet opening, which mold cavity has at least one movable wall part (21) which is movable between at least a first, forwardly moved and a second, retracted position, to which end drive mean (23) are provided, which drive means are included at least partly in the base part.

Abstract: Mold (20), provided with a mold cavity which is at least partly defined by a movable wall part (50), wherein injection means (34) are provided for introducing material into the mold cavity, which injection means comprise at least one injection opening (34A) which is provided in at least one stationary wall part (80) of the mold cavity, wherein said stationary wall part (80) is at least partly surrounded by said at least one movable wall part (50).

Abstract: A hardware configuration and related method for performing a coining-type injection compression operation. The invention is useful in molding lenses since lenses have different thicknesses at various points. The equipment maintains the mold in a closed position during the entire molding cycle. A two part standoff post is designed to provide for slight axial compression during high injection pressure. The standoff post also provides a convenient mounting surface near the parting line to install inserts at various heights.

Abstract: A method for injection foaming molding of a thermoplastic resin includes the steps of (1) injecting the foaming-agent-containing plasticized resin from an injection apparatus 30 to fill a mold cavity 10a, (2) releasing a clamping force of a mold 10 immediately after the foaming-agent-containing plasticized resin is injected and filled into the mold cavity 10a, so as to release the pressure of the foaming-agent-containing plasticized resin in the mold cavity 10a, (3) maintaining the pressure-released state of the foaming-agent-containing plasticized resin in the mold cavity 10a for a predetermined period of time, (4) expanding the mold cavity 10a to foam the foaming-agent-containing plasticized resin, and (5) cooling and maintaining the foaming-agent-containing plasticized resin while the mold cavity 10a is in the expanded state.

Abstract: A method for manufacturing products (2) using a mold having at least one mold (1) cavity (6) with at least one injection point (ISA) and at least one flow path (V) which extends from said at least one injection point in the direction of a longitudinal edge-forming part of the mold cavity situated at a relatively large distance from said at least one injection point, in which longitudinal edge-forming part a longitudinal edge of said product is formed, which mold cavity has at least one first movable wall (14) part which is situated in and/or near said longitudinal edge-forming part, wherein said first movable wall part has been or is brought in a first position, wherein a mass is introduced under pressure into the mold cavity, and fills the mold cavity at least in and/or near said longitudinal edge-forming part, after which said at least one first movable wall part is moved in the direction of said opposite first wall part.

Abstract: In an injection mold, a compression pin is placed at a cavity surface by the pressing force of a biasing member, and is moved rearward by the pressure of filled resin so as to form a compression boss. After the completion of filling, the compression boss is compressed by the compression pin.

Abstract: A method for forming thin-walled products from low-melt plastic in a mold, wherein an amount of the plastic, heated, is introduced into a mold cavity, with the mold at least partly opened, whereafter the mold is closed, such that the plastic in the mold cavity is pressed away by the wall parts of the mold cavity, whereby a complete filling of the mold cavity is obtained.

Abstract: An method of forming a thin walled section in an injection molded plastic part includes providing a mold having a first mold half, a second mold half, and a slide, wherein the first and second mold halves, and the slide define a mold cavity when assembled. The slide includes portions that define a thin walled section of the plastic part and is movable between a retracted position wherein the slide is partially retracted from the mold cavity and an engaged position wherein the slide is in position to define the final shape of the plastic part; injecting molten plastic into the mold cavity with the slide in the retracted position; moving the slide to the engaged position; allowing the molten plastic to cool; opening the mold halves and removing the plastic part.

Abstract: In a method of compression molding thermoplastic material, a compression gap is set between half-molds of a mold having fixed and movable platens for respective attachment of the half-molds. After setting the compression gap, the mold is closed and the platens are locked by moving locking elements into respective receiving elements. Injection of plasticized material then commences into a cavity formed between the half-molds when the mold is closed. The mold then opens as a result of pressure generated by the injected plasticized material until a distance between the half-molds corresponds to the compression gap. Subsequently, the mold undergoes a closing movement through application of a clamping force, thereby compressing the plasticized material.

Abstract: An apparatus for producing decorative elements (43), in particular for vehicles, includes a first mould plate (10); a second mould plate (20), which is movable relative to the first mould plate, such that the apparatus may be brought into an open and a closed position. The second mould plate includes a frame (21) and an exchangeable shaping core (22, 23) movable relative to the frame; and a clamp (30), which is arranged and movable in such a way that the entire circumferential zone (44) of a workpiece (40) is fixed to the frame (21) of the second mould plate (20) by the clamp. An associated method is also disclosed.

Abstract: Described herein is a process for the production of plates made of transparent plastic material with non-transparent overmoulded parts by means of a first direct injection and subsequent compression for the formation of the transparent plate, and a second injection for overmoulding said parts on the transparent plate, covering the indicators or witness marks of the first injection. Each injection can be in spots controlled in sequence, and the second injection can be followed by a respective step of post-compression.

Abstract: The present invention provides a method for molding an over-molded part by a multi-shot molding method. The method of the invention comprises combining a first mold section having one or more retractable tool portions and a second mold section to form a first mold cavity. A first thermoplastic resin is injected into a first mold cavity to form a first molded part. Subsequently, the second mold section is separated from the second mold section such that the first molded part remains in contact with the first mold section. The retractable tool portion is retracted to expose one or more channels. Next, a third mold section is combined with the first mold section to form a second mold cavity. A second thermoplastic resin is then injected into the second mold cavity to form the over-molded part which may then be removed from the mold section.

Abstract: A process for producing an exterior member/seal member assembly includes: a first step of moving a slide core to protrude into a major cavity defined between first and second dies and, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity; and a second step of retracting the slide core and injecting a soft synthetic resin into a seal-member forming cavity which is a remaining portion of the major cavity. An outer-seal-lip forming portion is connected to an outer end of the seal-member forming cavity; a recess-shaped step is formed on one side face of the slide core and adapted to define an inner-seal-lip forming portion leading to the seal-member forming cavity between the step and an inner surface of a guide bore in the second die when the slide core is retracted; and the soft synthetic resin is filled into the outer and inner-seal-lip forming portions 15 and 16 at the second step.

Abstract: The present invention provides a method of manufacturing golf balls having a rubber core of at least one layer and a cover of at least one layer which encloses the rubber core, which method includes the step of molding at least one layer of the rubber core by directly injecting a rubber composition into a spherical cavity and vulcanizing the injected composition. This process enables the sphericity of the rubber core to be enhanced, the rubber materials to be used without waste, and balls of an excellent scuff resistance to be obtained.

Abstract: In one embodiment of the present invention, a method comprises a plurality of operations. An operation is performed for depositing a quantity of article-forming media within a media receiving cavity of article forming equipment. After depositing at least a portion of the article-forming media within the media receiving cavity, an operation performed for depositing a volume of a prescribed fluid into the media receiving cavity. Depositing the prescribed fluid includes moving a first fluid delivery device through the quantity of the article-forming media while injecting the prescribed fluid through the first fluid delivery device into the quantity of the article-forming media.