Abstract: A wrinkle control process for manufacturing a closed cross-sectional, composite laminate structure on a male tool cured under temperature and pressure. The process includes the step of creating a plurality of filled or unfilled depressions at strategic locations in the laminate prior to curing. The depressions are created by depression forming elements that have a predetermined size designed to create a depression in under plies, alone or combined with intensification techniques. The depressions may be left unfilled or be partially or completely filled. Depression forming elements are removed after cure or remain part of the structure.

Abstract: A composite article has an article surface and may comprise a plurality of fibers at least partially embedded in a matrix. Each fiber may have at least one base surface and a pair of side surfaces. The side surfaces may be oriented in non-perpendicular relation to the base surface. The fibers may be positioned in side-by-side relation to one another such that the side surfaces of each fiber are oriented substantially parallel to the side surfaces of the immediately adjacent fibers.

Abstract: Insulating substrates may be selectively removed to form electrical connections between conductive patterns on different faces of the insulating substrate or between conductive patterns on the insulating substrate and external circuits.

Abstract: Methods for creating multi-layered bags with increased or maintained strength involve forming a ribbed pattern in one or more film layers of a multi-layered bag. The method also includes non-continuously laminating the film layers of the multi-layered bag together. In one or more implementation, a transverse direction ring rolling process forms the ribbed pattern and bonds the film layers together. In one or more additional implementations, the ribbed pattern and lamination are formed separately. Still further implementations include forming network patterns one or more film layers of a multi-layered bag. Multi-layered bags formed in accordance with one or more implementations of the present invention include one or more of increased strength or reduced basis weight.

Abstract: A nozzle plate holding device having a holding section which holds a nozzle plate arranged with a plurality of nozzles, and the nozzle plate holding device being used for bonding the nozzle plate, while the holding section holds the nozzle plate, onto a head chip arranged with a plurality of channels, wherein the holding section is configured to be capable of causing a distortion deformation of the nozzle plate in a direction that is parallel to a surface of the nozzle plate and crosses a length direction of the nozzle plate.

Abstract: The present invention relates to a material for thermal and/or acoustic insulation comprising an expanded elastomeric and/or thermoplastic elastomer blend based on styrenic organic polymer and chlorinated organic polymer, the process for the manufacturing of such material, and the use of such material.

Abstract: A multilayer structure includes a clear polyolefin layer, a colored polyolefin layer, and a random polyolefin backing layer. The colored and backing layers are coextruded and are permanently bonded at a layer interface, which is exclusive of an adhesive. The structure has a DOI of 70 or greater and passes a gravelometer impact test per the GM9508P standard, with a 10 pint load, at a ?30° C. temperature, and at an impact angle of 30 degrees. Among other uses, the structures are appropriate for use as body panels in the motor vehicle industry. The structures display a “class A” finish and meet a variety of requirements for durability and weatherability. An ABA structured backing layer and a method of making it are also described herein.

Abstract: A stretch laminate includes a first layer including an elastomer film, the first layer having a surface, and a second layer including a nonwoven material, the second layer having a basis weight of less than about 25 gsm and a surface that is attached to the surface of the first layer. The elastomer film has a strength of an engineering tensile strength, at an engineering strain rate of about 600/s, of at least one of about greater than about 14 MPa for a plain specimen or about greater than about 7 MPa for a notched specimen. A method of making the stretch laminate and an absorbent article having at least one region defined by the stretch laminate are also provided.

Abstract: The invention relates to a process for sticking edging material (12, 10) onto lightweight building boards (1) comprising two thin-walled outer layers (2, 4) and a core layer (6) of lightweight filler material disposed between the outer layers, having the steps: provision of a lightweight building board (1), a decor edge (10) and a stabilizing edge (12), and sticking on of the decor edge (10) and/or the stabilizing edge (12) in the region of a narrow surface (1?) of the lightweight building board (1). The process according to the invention is characterized in that the stabilizing edge (12) is introduced into a section between two outer layers (2, 4) in the region of the narrow surface (1?) without having first created a recess of at least one outer layer and/or of the core layer in this section, said recess corresponding substantially to the stabilizing edge.

Abstract: A light module (1; 14), comprising a carrier (8, 10) for mounting at least one semiconductor source (5), in particular a light emitting diode, wherein: the carrier (8, 10) has a flexible printed circuit board (10), the flexible printed circuit board (10) is bonded face-to face to at least one base plate, (8) and the carrier (8, 10) can be bent along at least one predetermined bending line (3; 3a-3e), the base plate (8) can be bent along the at least one bending line, (3; 3a-3e), the base plate (8) has at least one cutout (9) along the bending line (3; 3a-3e) and the flexible printed circuit board (10) has at least one strip (11; 15) which crosses at least one of the cutouts (9).

Abstract: The method of producing a magnesium alloy joined part has the following steps: a joining step of joining a reinforcing material made of metal to a plate material made of magnesium alloy without allowing an organic material to remain at the joined portion and a plastic-working step of performing plastic working on the plate material to which the reinforcing material is joined. A desirable means of joining the reinforcing material to the plate material can be to use an inorganic adhesive. Because the magnesium alloy joined part is formed by a structure in which the reinforcing material is joined to the plate material, in comparison with the case where the reinforcing material is formed by machining or the like, the magnesium alloy structural member can be obtained with high production efficiency.

Abstract: Process for producing a laminate being built of at least two monolayers of polymeric tapes, the polymeric tapes having a tensile strength of at least 200 MPa, said process comprises the steps of -forming a first monolayer of polymeric tapes by pre-tensioning the polymeric tapes and subsequently positioning the polymeric tapes under tension in a unidirectional, parallel manner, -forming at least a second monolayer over the first monolayer in the same manner the first monolayer is formed, thereby -stacking the at least two monolayers of polymeric tapes in such a way that the direction of the polymeric tapes is the same in every monolayer and that the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer above or below that monolayer -consolidating the thus stacked monolayers of polymeric tapes to obtain a laminate.

Abstract: Active materials of the invention contain at least one alkali metal and at least one other metal capable of being oxidized to a higher oxidation state. Preferred other metals are accordingly selected from the group consisting of transition metals (defined as Groups 4-11 of the periodic table), as well as certain other non-transition metals such as tin, bismuth, and lead. The active materials may be synthesized in single step reactions or in multi-step reactions. In at least one of the steps of the synthesis reaction, reducing carbon is used as a starting material. In one aspect, the reducing carbon is provided by elemental carbon, preferably in particulate form such as graphites, amorphous carbon, carbon blacks and the like. In another aspect, reducing carbon may also be provided by an organic precursor material, or by a mixture of elemental carbon and organic precursor material.

Abstract: An apparatus that manufactures an absorbent article includes a rotating member that rotates in a state where the rotating member is opposing one face of a continuous sheet that is moving, the rotating member having an arcuate retaining surface that retains a work, the rotating member causing the work to be moved to a position where the work is nipped between the one face and the arcuate retaining surface by rotating in a state where the work is retained on the arcuate retaining surface; and a pressing member that bonds a continuous sheet and a work together by coming into contact with another face of the continuous sheet when the work reaches the position and pressing the continuous sheet towards the arcuate retaining surface.

Abstract: A method and apparatus is disclosed for user-moldable sports equipment, for example, shin guards and sports shoes. The sports equipment includes an integral component having relatively rigid thin shell curved walls with a thermoplastic component sandwiched in between the thin shells. The thermoplastic transitions to a moldable state at a temperature between 150° F. and 210° F. The sports equipment is placed in a waterproof bag and into heated water to become moldable, and hardens to a rigid state when cooled. In a heel cup embodiment, a composite layer is applied directly to the shoe upper, and a pre-formed thermoplastic component is positioned over the composite layer. A second composite layer is then laid over the thermoplastic component and the assembly is cured. The heel cup may include arms that extend upwardly to engage the shoe closure structure.

Abstract: A product protective film bonding method includes the step of providing a film, the step of employing a screen printing technique to print an adhesive to one surface of the film corresponding to a part of the border of the configuration of the surface of the product to be protected, and the step of cutting the adhesive-printed film subject to the configuration of the surface of the product to be protected and then adhering the configured film to the surface of the product to be protected by means of the adhesive carried on the configured film.

Abstract: [Problem] The structure of the present invention is to provide an internally-illuminated three-dimensional hollow structure, which specifically has a high level of night-time visibility and can also bear weather conditions, such as rain water and wind, wherein a natural concavity and convexity configuration can be formed even if the structure is a complicated shape, and a framework configuration cannot be seen through even during internal illumination since the framework is a large-sized frame, even if coloration of the structure has high brightness or high saturation.

Abstract: A method for producing a hemmed joint structure having a second member placed on a first member and an edge of the first member bent over the second member to join the two members with each other. In this method, there is provided an flange part jutting out from an edge of the first member. The flange part is disposed at a position where the flange part, when bent, does not overlap an adhesive layer between the first member and the second member. Since the adhesive layer is set apart from the flange part, even when the flange part is subjected to friction stir bonding, the resultant frictional heat will not affect the adhesive layer.

Abstract: A boxer-style pant and a method of making a boxer-style pant having side seams, a contracted crotch region, and hanging legs. A web is provided. The web may be a single pant assembly, or a continuous web of multiple pant assemblies connected to one another. The web may be folded against a support structure. In certain embodiments, a multi-lane production system may be used wherein the web is folded against multiple support structures each parallel to a direction in which the web is conveyed, with each lane or machine direction array of pant assemblies folded against just one support structure. The web is cut to define leg openings, and contracted in selected areas along the web between the leg openings. Front and back regions are then joined together to form the side seams. An absorbent structure may be attached to the web.

Abstract: Methods for making scaffolds for delivery via a balloon catheter are described. The scaffold, after being deployed by the balloon, provides a crush recovery of about 90% after the diameter of the scaffold has been pinched or crushed by 50%. The scaffold structure has patterns that include an asymmetric or symmetric closed cell, and links connecting such closed cells.

Abstract: A layup mandrel includes a shell having a tool surface on which plies may be laid up. The shape of the shell is changed by an actuator.

Abstract: A sound-absorbing heat shield includes at least three layers which are connected to one another. The heat shield is produced from a composite foil which includes two metal foils which are connected to one another via a damping layer. A method for producing a sound-absorbing heat shield introduces a damping layer between two metal foils, subsequently applies pressure to them over their full area, and afterward forms the foil into the desired shape of the heat shield.

Abstract: A multilayer structure includes a clear polyolefin layer, a colored polyolefin layer, and a random polyolefin backing layer. The colored and backing layers are coextruded and are permanently bonded at a layer interface, which is exclusive of an adhesive. The structure has a DOI of 70 or greater and passes a gravelometer impact test per the GM9508P standard, with a 10 pint load, at a ?30° C. temperature, and at an impact angle of 30 degrees. Among other uses, the structures are appropriate for use as body panels in the motor vehicle industry. The structures display a “class A” finish and meet a variety of requirements for durability and weatherability. An ABA structured backing layer and a method of making it are also described herein.

Abstract: A control device for starting a fuel cell is provided which is capable of preventing an excessive reduction of the terminal voltage of the fuel cell. A primary precharge portion, provided with a high voltage switch and a current limiter, is disposed at the output portion of a power storage unit, and a secondary precharge portion, provided with a DC-DC chopper and a control portion, is disposed at the output side of a fuel cell. The primary precharge portion controls the output current to flow in a path via a resistor having a predetermined resistance. The secondary precharge portion controls an output current of the fuel cell based on a current command value IFCCMD for the fuel cell.

Abstract: The present invention may be embodied as a method of fabricating a composite article comprising the following steps. Primary panels are provided. Secondary panels are provided. Tertiary panels are provided. At least one flat primary panel is bent. The plurality of primary panels is arranged such that the primary panels conform to the shape of the composite article. An inner skin is formed by joining the adjacent edge portions of adjacent primary panels. A core is formed. Second surfaces of at least some of the primary panels are joined to first surfaces of at least some of the secondary panels. An outer skin is formed. Second surfaces of at least some of the secondary panels are joined to first surfaces of at least some of the tertiary panels. Material is applied to the tertiary panels to finish the outer skin of the composite article.

Abstract: A flexible, elastically gathered cover for food containers or the like, and a method of making such covers, uses a forming machine with a lower section having: a) a square shaped forming mandrel having a top, four substantially vertical sides, and a heating element extending longitudinally along each side, b) four elongated sealing bars having a tops with a guide and a front with an elongated strip of rubber attached, and c) a cover ejector with upwardly extending ejector pins. Each sealing bar is positioned opposite a respective side of the forming mandrel separated to create a forming groove around the mandrel. An upper section having a forming head assembly comprises: a) a forming die with sides that define a cavity sized to telescope over the forming mandrel, and b) a band ejector plate with plural downwardly extending ejector pins located along the perimeter. The forming die hangs below the band ejector plate.

Abstract: A protected turbine blade includes a first turbine blade shell and a second turbine blade shell, being fibre-reinforced, are connected by a cured resin and provided with a protective cover at a leading edge. The protective cover is a composite comprising a layer of UV-resistant thermoplastic material and a layer of cured epoxy resin, the UV-resistant thermoplastic material having the following properties a surface free energy of less than 35 mJ/m2, and a erosion resistance of the thermoplastic material larger than the erosion resistance of the cured resin connecting the turbine blade shells. The layer of cured epoxy-resin covers the cured resin over at least part of the length of the distal half of the turbine blade, and is bonded to said turbine blade. A method of manufacturing such a turbine blade, and to a turbine having such turbine blades is also provided.

Abstract: A method of labeling of a container including a medication includes, in at least one embodiment, reducing the size of the label using a label apparatus and reducing the label size using the label apparatus, applying a surface securing adhesive to at least one surface securing section of the label using an adhesive application apparatus, and attaching the at least one surface securing section of the label to the container with the securing adhesive. The method also includes applying a label securing adhesive to the label to maintain the label in the reduced orientation.

Abstract: Provided is a system and method of making a door having first and second door skins and an internal frame. The top and bottom surfaces of the frame are coated with an adhesive and the frame is placed on a first door skin. The second door skin is then placed on the opposite surface of the frame. The assembled components are then pressed to bond the first and second door skins to the frame.

Abstract: Certain embodiments disclosed herein relate to a smooth finish composite structure and methods for making the composite structure. In particular, in one embodiment, a method is provided that includes creating a first layer of a composite structure. The creation of the first layer includes positioning the first layer in a mold and curing the first layer. Additional layers of the composite structure are created and bonded to the first layer.

Abstract: Under one aspect, an interventional device includes a balloon having a flexible wall. The flexible wall includes a composition including between 0.005 wt. % and 0.20 wt. % of carbon nanotubes dispersed in a polymer. Under another aspect, a method of making an interventional device includes contacting a plurality of polymer particles with a plurality of nanotubes; extruding the polymer particles and the nanotubes to form a composition comprising the polymer and the nanotubes; and blow-casting the composition into a balloon.

Abstract: A method for manufacturing a membrane-electrode assembly of the present invention includes: a reinforcing member disposing step of disposing a reinforcing member (104A, 104B), whose frame portion is formed to surround an opening of the reinforcing member, on a polymer electrolyte membrane (102) such that the frame portion covers a peripheral portion of at least one surface of the polymer electrolyte membrane; a catalyst layer applying step of applying a coating of a catalyst layer (109A, 109B) on at least an entire surface of the polymer electrolyte membrane (102) which surface is exposed from the opening of the reinforcing member (104A, 104B); and a gas diffusion layer disposing step of disposing a gas diffusion layer (114A, 114B) such that the gas diffusion layer covers the catalyst layer (109A, 109B).

Abstract: Aircraft fuselage made out with composite material and manufacturing processes. The structure of the fuselage (11) comprises a skin (13), a plurality of frames (17) positioned transversely to the longitudinal axis (9) of the fuselage (11) and a plurality of longitudinal stiffening elements (14, 15) that can be either stringers (14) or beams (15), being the ratio between the distance (X) between frames (17) and the distance (Y) between longitudinal stiffening elements (14, 15) is less than one. If the stiffening elements are stringers (14) the manufacturing process is based on assembling the fuselage section (11) joining the skin (13) with the stringers (14) to the frames (17). If the stiffening elements are beams (15) the manufacturing process is based on joining the skin to an internal structure made up with frames (17) and beams (15).

Abstract: A method of manufacturing a laminate of polymeric tapes is provided. Polymeric tapes of the core-cladding type are used, in which the core material has a higher melting temperature than the cladding material. The method includes pretensioning the polymeric tapes, and positioning the polymeric tapes and consolidating the polymeric tapes to obtain the laminate. The positioning is carried out in two, three, four or more planes. The polymeric tapes are arranged in each plane in a parallel, side-by-side relationship in a first direction, the polymeric tapes of each plane are offset in a second direction relative to the polymeric tapes in an adjacent plane, the second direction being substantially perpendicular to the first direction. The polymeric tapes of the laminate are unidirectionally arranged in a single direction in all of the two, three, four or more planes.

Abstract: A panel assembly for use in any number of different applications, including a variety of vehicle applications, that reduces noise or vibrations, provides thermal insulation, and/or improves structural integrity. According to an exemplary embodiment, the panel assembly includes a main panel made from a metal, one or more sound damping patches also made from a metal, and an adhesive layer that joins the patches to the main panel in a constrained layer construction. The sound damping patches may include one or more forming features, which are designed to improve the formability of the panel assembly without significantly impairing its sound damping characteristics. There are different types of forming features, including internal forming features (e.g., openings, holes, slits, slots, etc.) located within the interior of the patch and external forming features (e.g., projections, fingers, recesses, waveforms, etc.) located along the perimeter of the patch.

Abstract: The present disclosure describes a taping tool for taping gaps, seams, and/or joints between wallboard members that includes a simplified tape advance/actuation assembly. The taping tool has an elongate body portion with first and second ends, and a connected head portion that directs dispensed tape toward a joint between wallboard members. The tape advance/actuation assembly has a control member forming part of the tool's elongate body portion and a tape engagement member housed by the tool's head portion. The tape engagement member moves in substantial unison with and in response to movement of the control member. The tape engagement member engages or disengages the tape depending at least in part on the position and/or direction of movement of the control member. The extent of the engagement between the tape engagement member and the tape may be adjusted though manipulation of a single fastener.

Abstract: The invention relates to a method for the production of a molded part which comprises a base part consisting of a plurality of layers and a thermoplastic or duroplastic synthetic material bonded therewith, the bond of the base part with the thermoplastic or duroplastic synthetic material being formed such that the thermoplastic or duroplastic synthetic material is deformed under a pressure to become flowable, or that it is introduced already liquefied under pressure and forms a bond with the base part. According to the invention, the production of the base part and the production of the bond of the thermoplastic or duroplastic synthetic material with the base part is carried out in the same die.

Abstract: A trim panel formed from natural fibers and a protective material, and a method of forming the trim panel. The natural fibers are environmentally-friendly and the protective material may be sufficiently adhered to the natural fibers without the use of hot melts or adhesives. The protective material is configured to be permeable to gasses and water vapor during application and once applied impermeable to UV light and liquids such as water and soda.

Abstract: A method of manufacturing a panel, the panel comprising a composite skin and at least one composite stiffener, the method comprising: positioning first and second mandrels on opposite sides of the stiffener; positioning first and second compaction tools on opposite sides of the skin; and compacting the skin between the first and second compaction tools by moving one or both of the compaction tools, wherein the movement of the compaction tool(s) causes the first and second mandrels to move towards the stiffener along inclined paths so as to compact the stiffener between the mandrels.

Abstract: Multilayer absorbent pads for nappy/diaper pants are manufactured on a unit (1) comprising a first device (3a) and a second device (3b) by which respective first and second layers (4a, 4b) of absorbent material (5) are taken up from two infeed stations, shaped, and transferred to two release stations. The devices (3a, 3b) are synchronized in operation, and associated by way of a transfer station (8) at which the first layer (4a) of absorbent material is joined directly to the second layer (4b), positioned selectively and with the second layer still retained by suction on the second device (3b); the two layers are thereupon compressed simultaneously to form an absorbent pad (2) that emerges from the unit as a stable, one-piece core.

Abstract: A method and a device for manufacturing hollow components out of a composite material, such as sections of an airplane fuselage, that include a skin and possibly strengthening elements. The method may include inserting a multi-articulated arm fitted with a fiber placement head inside a female mold of elongated shape. The female mold includes a longitudinal slit. A support for the multi-articulated arm is received through the slit. The method may also include applying fibers to the inner molding surface of the female mold using the placement head to form the composite material skin, by displacement of the application head using the multi-articulated arm and relative displacement in translation of the support for the multi-articulated arm along said longitudinal slit.

Abstract: A method for manufacturing a wind turbine rotor blade is described. Composite material is placed around a moulding core arrangement. The moulding core arrangement includes a first moulding core and a second moulding core. The composite material is set forming a wind turbine rotor blade. The wind turbine rotor blade includes a root portion and a shoulder portion. The first moulding core is removed from the wind turbine rotor blade through an opening at the root portion. The second moulding core is removed from the wind turbine rotor blade through an opening at the shoulder portion.

Abstract: Stiffener tool positioning apparatus and methods are provided. In one embodiment, the apparatus includes a base, a first flipper member and second flipper member. The first flipper member is slide-ably attached to the base. The first flipper member is also configured to selectively attach a first mandrel thereon and to rotate the first mandrel. The second flipper member is also slide-ably attached to the base. The first and second flipper members are slide-ably positioned select distances from each other on the base in embodiments. The second mandrel is further configured to attach a second mandrel thereon and to rotate the second mandrel.

Abstract: A spool winding assembly for winding a composite strip onto a spool having a hub is disclosed. The strip includes an elongate plastic strip having a flat base portion and a plurality of laterally spaced apart lengthwise extending rib portions upstanding from the base portion; and a plurality of elongate reinforcing members extending lengthwise within respective rib portions, the rib portions and the reinforcing members forming composite ribs. The assembly includes: a main frame, a spool holder for rotatably supporting the spool relative to the main frame, a spool drive unit for driving the spool with respect to the main frame, a carriage mounted for lateral movement with respect to the spool, a bender mounted to the carriage for receiving the strip as it is fed towards the hub of the spool and for deforming the strip to give it a curved base portion, and a bender drive unit operably connected to the bender for driving the strip through the bender.

Abstract: A trim covering for a seat assembly of a vehicle, the trim cover having an inner and outer surface and a bonding tape applied to at least one of the inner or outer surfaces. The bonding tape is used to bond portions of the trim cover together, provide additional structural integrated to the trim cover and provide improved craftsmanship in closing-out certain areas of the trim cover. A method of performing a trim cover assembly for use in a seat assembly of a vehicle. The method includes applying heat and pressure over a predetermined time period to bonding tape arranged at a joint between at least two trim components, placing such bonding tape and trim components in a mold, and applying heat and pressure over a predetermined time period to such trim components having the bonding tape arranged at a joint, to form a one-piece trim assembly.

Abstract: Disclosed herein is a consolidated or densified composite article comprising polymer, particularly fluoropolymer, and carbon fiber.

Abstract: An optical waveguide is provided comprising a non-solid core layer surrounded by a solid-state material, wherein light can be transmitted with low loss through the non-solid core layer. A vapor reservoir is in communication with the optical waveguide. One implementation of the invention employs a monolithically integrated vapor cell, e.g., an alkali vapor cell, using anti-resonant reflecting optical waveguides, or ARROW waveguides, on a substrate.

Abstract: A photoelectric lens module is utilized to focus a light source. A fabrication method comprises steps of providing a first substrate; positioning a plurality of gap units on the first substrate, and forming a plurality of gap regions amongst the gap units on the first substrate; providing a second substrate comprising a plurality of photoelectric lens units, in which the positions of the photoelectric lens units are corresponding to the locations of the gap regions; and filling a transparent rubber in the gap regions in such that the first substrate and the second substrate are adhered closely.

Abstract: A method for manufacturing a multimaterial component or construction, whereby a body is formed in said method of a basic material and at least one piece formed of a wear resistant material being joined to said body at a temperature of not more than 80% of the lowest melting temperature of the materials to be joined. The invention also comprises the use of a multimaterial component or construction manufactured by means of said method.

Abstract: A production apparatus 100 of a skin 150—fitted foam molding member 300 of the present invention includes: a first mold 111 where an internal surface 142 of a core material 140 is so disposed as to face a mold face 115 of the first mold 111; a second mold 112 so disposed as to open and close relative to the first mold 111 where an external surface 152 of a skin 150 having a roll portion 155 bendably formed is so disposed as to face a mold face 116 of the second mold 112; a bender 120 for bending, in a state that the first mold 111 and the second mold 112 are closed, the roll portion 155 to allow the roll portion 155 to face an external surface 147 of an end portion 145 of the core material 140; a welder 130 for forming a seal portion 200 which prevents a leak of a foam body 180 filled between an internal surface 141 of the core material 140 and an internal surface 151 of the skin 150 where the preventing operation of the leak of the foam body is implemented by welding the end portion 145 of the core material