Abstract: A gripping device for gripping an egg tray (3A) having a dimpled structure includes a gripping unit (4) that is movable up and down to engage and grip the egg tray (3A) and move it. The gripping unit comprises (4) at least a pair of opposite grip ping members (42A, 42B) which are movable in opposite directions, substantially transverse to the up and down movement of the unit (4), from a retracted position to an advanced position to grip a dimple (31) of the egg tray (3A), and from the advanced position to the retracted position to release the dimple. Each gripping member (42A, 42B) of said pair has a separate pressure operated actuator (46) operatively connected to it. The actuator (46), upon pressurization, moves the corresponding gripping member (42A, 42B) from the retracted position to the advanced position.

Abstract: A position verification sensor produces a discrete output for determining an accuracy of mutual mechanical positioning with a key and includes: a substratum; a housing; a receiver pad that: receives contact with the key; produces a target output in contact with the key; and produces a null output in absence of contact with the key; an aperture cap having: a cap surface; and the keyway aperture that selectively communicates the key; and a compliant member that: rests in a primary position in an absence of the key disposed on the cap surface; receives the depression force from the aperture cap; reciprocatively depresses, from the primary position to a depressed position, in response to receiving the depression force and being pushed by the depression force from the key; and reciprocatively returns, from the depressed position to the primary position, when the key is removed from contact with the aperture cap.

Abstract: Robots, including robot arms, can interface with other modules to affect the world surrounding the robot. However, designing modules from scratch when human analogues exist is not efficient. In an embodiment, a mechanical tool, converted from human use, to be used by robots includes a monolithic adaptor having two interface components. The two interface components include a first interface component cabal be of mating with an actuated mechanism on the robot side, the second interface capable of clamping to an existing utensil. In such a way, utensils that are intended for humans can be adapted for robots and robotic arms.

Abstract: A problem with current food service robots is making the robots safe to work around food. A solution provided by the present disclosure is a food-safe tool switcher and corresponding tool. The tool switcher can mate with a variety of tools, which can be molded or 3D printed out of food-safe materials into a single-part, instead of constructed modularly. This provides for easier cleaning.

Abstract: A system comprising an articulated robot arm including assembly of links interconnected with motorized joint units at joints between the links for movements of the links relative to one another, one of the links being a base link. A docking cradle is adapted to be connected to a structure and configured for being releasably connected and for supporting the articulated robot arm. A coupling configuration is between the base link and the docking cradle for powering contact to be made. A clamping system includes one or more clamp members and a clamp lever for locking the base link to the docking cradle at the coupling configuration.

Abstract: Disclosed is a suction device that includes: a main body, a suction nozzle, and an elastic member. A through passage is defined in the main body. One end of the main body is defined as a suction nozzle mounting end. The part of the through passage at the suction nozzle mounting end is defined as an inner cavity. The suction nozzle is movably installed within the inner cavity and connected to the main body and communicated with the passage. The elastic member is disposed within the inner cavity and is operative to provide a pushing force for moving the suction nozzle outward of the inner cavity. The suction device can suck up a product having a convex or concave surface in an effective and smooth manner; meanwhile the deviation resulting from misalignment of the product can be corrected facilitating precise positioning of the product in the production line.

Abstract: A workpiece gripping device includes a gripping member and a holding member. The gripping member includes a pair of extension parts that protrude from a base part and face each other with a space therebetween where the plate-shaped part of the workpiece can be inserted, and is deformable so that at least parts of the extension parts approach each other or are separated from each other. The holding member includes a slit for holding the gripping member slidably along a direction in the extension parts protrude, can make the extension parts approach each other by housing at least parts of the extension parts in the slit, and can make the extension parts be separated from each other by projecting at least parts of the extension parts from the slit.

Abstract: An assembly of links and motorized joint unit comprises two or more links. The links have a tubular body, one or both ends of the tubular body being an open end. A motorized joint unit has a first portion received in the open end of the tubular body of a first of the links so as to be secured relative to the first of the links. A second portion is rotatable relative to the first portion by actuation of the motorized joint unit, the second portion received in the open end of the tubular body of a second of the links, the motorized joint unit secured relative to the second of the links. A protective sleeve has a tubular body mounted over part of the motorized joint unit to cover a gap between the first and the second of the links, the protective sleeve having a rigid annular member and a flexible annular member, the flexible annular member foldable onto the rigid annular member.

Abstract: An installing device includes a connection member and a linear motion support. The connection member is disposed at a base end portion of a hollow arm which extends in an extension direction and which has a hollow extending in the extension direction. A linear object passing through the hollow is connectable to the connection member. The linear motion support supports the connection member slidably with respect to the hollow arm in the extension direction.

Abstract: In an embodiment, a cover for an automated robot includes elastic sheets that are adhered to each other in a geometry. The geometry is configured to allow the elastic sheets to expand and contract while the automated robot moves within its range of motion. The elastic sheets are attached to the automated robot by elasticity of the elastic sheets. A first group of the elastic sheets forms an elastic collar configured to grip the automated robot at a distal end and a proximal end of the cover. A person of ordinary skill in the art can recognize that nonbreakably means that during operation of the robot, the elastic sheets hold their elasticity and integrity without breaking.

Abstract: A knife includes a blade and a handle assembly. The handle assembly is rotatably coupled to the blade, and extends along a longitudinal axis. The handle assembly includes a side frame, a handle frame, a locking arm, and a guard. The handle frame is spaced apart from the side frame and defines a cavity with the side frame. The locking arm is coupled to the side frame and is movable between a locked position and an unlocked position. The locking arm is defined by an arm length. The guard is coupled to the side frame, and is positioned outward from the locking arm relative to the longitudinal axis. The guard overlays at least a portion of the locking arm along the longitudinal axis, and is defined by a guard length. A ratio of the guard length to the arm length is greater than seventy-five percent.

Abstract: A cutting tool having multiple functional faces and an adjustable blade. The cutting tool may include a solid body having multiple functional faces, a blade, and a peg. The multiple faces of the solid body may include a cutting face, a gripping face, a base face, one or more securing faces and a pressure face. The cutting face may be curved and may form a receiving bay for receiving an item to be cut and may include a plurality of slots. The blade may be secured in any one slot of the plurality of slots. The peg may help to secure the blade within the cutting face. The cutting tool may also include a compartment for storing extra blades.

Abstract: A utility knife is disclosed which includes a handle portion, a head unit attached to the handle portion, and a blade attached to the head unit.

Abstract: Multi-tool devices and methods of customizing multi-tool devices in a web-based ordering system are provided. One embodiment of a multi-tool device includes a plurality of compartments, wherein each compartment is configured to house one or more attached tools, one or more removable tools, and/or one or more storage ports. Each compartment includes a moveable portion that is configured to be moveable with respect to the other portions. The multi-tool device further includes at least one pin configured to connect the plurality of compartments together. Each of the moveable portions of the compartments is configured to move between a storage position and a deployed position. When the moveable portions are arranged in their respective storage positions, an outer surface of the multi-tool device has a disk shape, an ellipsoid shape, a truncated ellipsoid shape, a spheroid shape, a truncated spheroid shape, a sphere shape, a truncated sphere shape, an ovoid shape, or a truncated ovoid shape.

Abstract: A pneumatic scissor tool comprises a tool housing, a movable blade and a power assembly, the tool housing comprises an assembly space, a mounting opening and a fixed blade, wherein the fixed blade is arranged at the mounting opening, the movable blade is arranged at the mounting opening corresponding to the fixed blade. Further, the power assembly comprises a pneumatic motor, a transmission shaft and an eccentric driving wheel. The eccentric driving wheel is connected with the transmission shaft and comprises an outer ring member, a bearing block, a column mounting space and a plurality of supporting columns, the outer ring member is used for pushing the movable blade, the bearing block is arranged in the outer ring member and installed in an eccentric manner with the transmission shaft, and the supporting columns is arranged in the column mounting space and are tightly connected with each other.

Abstract: There is disclosed an attachment (22) for a cutting head (100) of a hair cutting device (1). The attachment (22) comprises first and second side portions (24, 26) configured to cover, respectively, first and second sides (112, 114) of a stationary cutting member (115) of the cutting head (100), and an intermediate portion (28) interconnecting the first and second side portions (24, 26) and configured to cover an outer surface (120b) of a first wall portion (120) of the stationary cutting member (115). The first and second side portions (24, 26) are configured to protrude relative to the plurality of primary cutter teeth (118) of the stationary cutting member (115), which define a cutting zone of the cutting head. The first and second side portions (24, 26) and the intermediate portion (28) define a recess exposing the primary cutter teeth (118) of the stationary cutting member (115). The recess is non-interrupted over a distance of at least 50% of the length of the cutting zone.

Abstract: A razor handle includes a handle body extending in a longitudinal direction. The handle body includes a first material having a front portion and a rear portion. The razor handle further includes a connecting portion for connection to a razor cartridge. The connecting portion extends from the front portion of the handle body. The handle body includes a supporting element which contributes to a relative movement between the front portion and the rear portion of the handle body.

Abstract: A functional polymeric cutting edge structure and methods for the manufacturing cutting edge structures using polymeric materials are provided. A razor blade for use in a razor cartridge or a blade box for assembly in a razor cartridge frame may be formed using the present invention.

Abstract: A windshield removal tool has elongate arm with a claw at its distal end. The device also includes a winch actuated by a motor at the proximal end of the arm. When a cutting wire is positioned along an adhesive bead about a periphery of a fixed glass or panel, the cutting wire is threaded through a puncture in the adhesive bead and attached to the winch. The claw engages a location along the adhesive bead as the winch wines in the cutting wire. A pulley near the distal end of the arm guides the wire. The device may be removed from an initial anchored position and anchored at a new position by removing the claw and placing it at another point along the periphery.

Abstract: Cutting tools are provided for scoring a hose over a fitting. The cutting tool includes a handle with a central pass-through for the hose, and a scoring mechanism adjustably coupled to the handle. The scoring mechanism includes a base member with a central pass-through for the hose, and which is adjustably coupled to the handle. The scoring mechanism further includes an arm-blade subassembly coupled to the base member. The subassembly includes a blade, and an arm with a blade-receiving recess, and a guide surface to contact and travel along a hose. The blade is coupled to the arm within the blade-receiving recess to extend a selected penetration depth from the arm. The arm is radially adjustable with adjustment of the base member relative to the handle to physically contact the guide surface to the hose and insert the blade into the hose the selected penetration depth.

Abstract: Described is system (2) for fastening blades for cutting food products, designed for use in a slicing machine, comprising a support frame (10, 11) which includes a crosspiece (10, 11) provided with a plurality of gripping elements (12), each designed to receive a respective fastening member (21, 22) provided on one of said blades (2), characterised in that: the elements (12) include two rectilinear contact surfaces (120, 121) set at an angle to each other; and that the blades (2) are equipped with polygonal members (21, 22), having two sides designed to make contact at the same time with the two contact surfaces (120, 121).

Abstract: An attachable rolling plate assembly which is attached as a single unit to a portable cutting tool to facilitate the safe rolling movement of the portable cutting tool on a workpiece. The invention comprises a frame assembly formed from a single piece of molded material such as fiber enriched high-impact nylon having a pair of oppositely disposed longitudinal sidewalls and a flat base portion having an opening through which a saw blade of a power saw extends. The invention also includes a cutting guide assembly to facilitate a straight cut, reduce torsional rotation of the saw blade and reduce kickback of the saw. A water spray hose is retained to spray water in front of a saw blade of a retained sidewinder power saw.

Abstract: An automated lift machine that feeds strips of staples into an automated stapling machine that can be used in a production line. The lift machine includes a lifter subassembly and a pusher subassembly, and a magazine for holding multiple strips of staples that are stacked on top of one another. A lift fork extends under of the legs of the second staple strip from the bottom, then lifts up all of the stacked staples in the magazine except for the bottom-most staple strip. After that occurs, the pusher forces the bottom-most staple strip from beneath the stacked staples in the magazine, then pushes that strip toward an exit position, into the feeder for the automated stapling machine. The pusher retracts and the lift fork gently lowers the stacked staples in the magazine until they bottom out, after which the lift fork retracts from the stack.

Abstract: A safety system is provided for a power tool having a motor-driven cutting blade, a safety mechanism operable by a controller to stop and/or move the cutting blade and a blade guard. The safety system includes an electrically active surface provided on the blade guard that is configured to change an electrical characteristic in response to contact between the body of an operator and the active surface. An active surface controller is operable to provide electrical power to the electrically active surface, to generate a signal in response to the change in the electrical characteristic, the signal indicative of an unsafe condition, and to transmit the signal to the controller for the safety mechanism.

Abstract: A blade guard assembly for use with a band saw has a blade guard housing integral to, or attached to, a band saw housing. Disposed within the blade guard housing is a spring. A guard member is slidably received within and extend out of the blade guard housing. The guard member is biased by the spring to engage a bumper attached to the blade saw housing in a normal position and retracts when an object is in the cutting zone.

Abstract: A machine and method for compacting a powder material comprising ceramic powder; a layer of non-compacted powder material is conveyed to a compacting device, which enables a layer of compacted powder material to be obtained; the machine comprises a conveyor belt for carrying the powder material from an input station, in the area of which a feed assembly feeds the powder material to the conveyor assembly, to the compacting device; a straightening device is envisaged, which is designed for exerting a force to increase the flatness of the conveyor belt at least in the area of the input station.

Abstract: A poured material forming system, including a thin polymer liner for receiving a poured material for forming a wall upon curing of the poured material, the liner containing a texture to be transferred onto the cured poured material. The poured material forming system including a support material positioned opposite the poured material during curing of the poured material for preventing deformation of the liner.

Abstract: A cutting apparatus is provided. The cutting apparatus includes a processing chamber, a chuck table, a transferring mechanism, and a cleaning member. The chuck table is disposed in the processing chamber and configured to hold a workpiece on a chuck surface of the chuck table. The transferring mechanism is configured to transfer the workpiece to the chuck surface or transfer the workpiece away from the chuck surface. The cleaning member, which is disposed in the processing chamber, is configured to move across and clean the chuck surface before the workpiece is transferred to the chuck table and/or after the workpiece is transferred away from the chuck table.

Abstract: Unidirectional fiber tapes include a matrix material including a thermoplastic material and a plurality of fibers dispersed within the matrix material, wherein the tape has a thickness that is between 0.07 mm and 0.30 mm. The tapes have a mean relative fiber area coverage of from 65 to 90 and a coefficient of variance of from 3 to 20. In the tapes, the fibers comprise carbon fibers, and the tape has a fiber volume fraction that is greater than 50%.

Abstract: A method for manufacturing bulked continuous carpet filament, the method comprising: (1) reducing a chamber pressure within a chamber to below about 5 millibars; (2) after reducing the chamber pressure to below about 5 millibars, providing a polymer melt to the chamber; (3) separating the polymer melt into at least eight streams; (4) while the at least eight streams of the polymer melt are within the chamber, exposing the at least eight streams of the polymer melt to the chamber pressure of below about 5 millibars; (5) after exposing the at least eight streams of the polymer melt to the chamber pressure of below about 5 millibars, recombining the at least eight streams into a single polymer stream; and (6) forming polymer from the single polymer stream into bulked continuous carpet filament.

Abstract: This invention involves the incorporation of gas in the matrix of a mandrel. The incorporation of gas, as foam, into the matrix of a mandrel reduces the density of the mandrel. The resulting mandrel is easier to remove from finished product by washout or disintegration. Therefore it is of great value in the use of mandrels in making hollow composite parts.

Abstract: The present disclosure provides an anti-slip salad bowl which includes an enamel body. An outer bottom of the enamel body is coated with a silicone adhesive layer and a mixed silicone rubber layer. Correspondingly, the disclosure further provides a method for manufacturing the anti-slip salad bowl. On one hand, since the manufacturing is convenient and the related materials are easily available, the resultant bowl is cost effective. On the other hand, since the outer bottom of the enamel body is bonded with an anti-slip layer made of silicone rubber, silicone rubber adhesive, vulcanizing agent and color concentrate, the bowl will not be prone to slipping when moved or used to mix salad.

Abstract: A method for manufacturing a composite structure in which a first member and a structure material as a second member are integrated, the method including: an arrangement step of arranging a structure precursor including a resin and reinforced fibers in a mold made of the first member; a heating step of heating the structure precursor to equal to or higher than a temperature at which a storage elastic modulus (G?) of the structure precursor is less than 1.2×108 Pa; a shaping step of expanding the structure precursor by heating to form a structure material as a second member, and bringing the structure material into close contact with the first member to obtain a composite structure; and a cooling step of cooling the composite structure.

Abstract: A system of retaining wall blocks, a method of assembling a retaining wall block assembly, and a mold for manufacturing retaining wall blocks having adjustable engagement configurations.

Abstract: The present invention provides an imprint method of forming a pattern of an imprint material on a substrate by using a mold, the method including obtaining, before bringing the mold and the imprint material into contact with each other, a correction parameter for correcting deformation of a pattern of the mold caused by bringing the mold and the imprint material on the substrate into contact with each other, and reducing the deformation of the pattern of the mold by moving at least one of the mold and the substrate by a moving unit configured to relatively move the mold and the substrate in a direction parallel to a surface of the substrate in accordance with the correction parameter in a state in which the mold and the imprint material on the substrate are in contact with each other.

Abstract: There is disclosed a mould for forming a collapsible container from an expandable material, the container comprising, when assembled, at least a base and a two pairs of a side walls extending at right angles from opposing sides of the base, the mould comprising: a first mould member and a second mould member movable with respect to each other between an open and a closed moulding position to define a mould cavity; a control means for delivering expandable material into said mould cavity and for delivering steam to facilitate expansion of the expandable material within said mould cavity to form said container; and a plurality of anvils mounted on a rear surface of at least one of the first mould member and/or second mould member, each anvil being movable so as to be extended into the mould cavity so as to form one or more hinges in the expandable material at predetermined locations within the mould cavity; wherein the mould cavity defined by the first mould member and the second mould member is a three-dimensi

Abstract: Disclosed are a transfer-molded inductor and a manufacturing method thereof. The inductor comprises a magnet formed by transfer molding with a soft magnetic colloid; and a prefabricated coil assembly comprising an air-core coil and electrode sheets connected at two ends of the air-core coil. The method comprises steps of: connecting a prefabricated air-core coil and an electrode sheet by welding to form a coil assembly, and placing the coil assembly in a cavity of a mold; performing transfer molding with a soft magnetic colloid in a gelatinous state so that the coil is entirely buried in the colloid while the electrode sheets at two ends of the air-core coil are at least partially exposed outside the colloid to serve as terminal electrodes; and performing demolding after the colloid is cured to form a magnet, and finishing the terminal electrodes to obtain the inductor.

Abstract: An injection mold includes a first mold half with a first mold surface and a second mold half with a second mold surface. The first and second mold surfaces together delimit a cavity when the injection mold is closed. An electrically conductive reinforcing element is arranged on at least one of the first and second mold surfaces and is configured for an electrical voltage to be applied such that the electrically conductive reinforcing element increases in temperature and a viscosity of an injection-molding compound flowing past the electrically conductive reinforcing element decreases. A method for producing injection-mold components using the injection mold includes applying an electrical voltage to the electrically conductive reinforcing element and thereby increasing its temperature such that the viscosity of the injection-molding compound flowing past the electrically conductive reinforcing element decreases as it flows and fills the cavity.

Abstract: An object of the present invention is to provide a technique by which, when producing a resin molded article using an insert member having low pressure resistance, molding can be easily performed, and deformation of the insert member can be suppressed. A method for producing a resin molded article of the present invention, the method includes the steps of disposing an insert member in a cavity of a mold; performing injection of molten resin into the cavity; terminating the injection on and after the molten resin reaches an overflow portion in the cavity and before the molten resin fills the overflow portion; and separating resin in the overflow portion.

Abstract: The present disclosure provides a case, a preparation method thereof and an electronic product. The case includes a glass cover plate, a plastic frame body and a metal substrate frame, where the glass cover plate, the plastic frame body and the metal substrate frame are sequentially bonded without steps. The method includes: (1) coating an edge of a glass cover plate with a first activator, and then drying; and (2) bonding the glass cover plate obtained in step (1) with a metal substrate frame by injection molding.

Abstract: This disclosure provides an injection molding system for use with a material, the system comprising: a heated barrel; a member mounted in the barrel for melting the material and for ejecting molten material; a pair of mold plates, one of the pair being operatively coupled to the barrel in use, the other of the pair being movable relative to other plate for movement between a closed position and an open position, characterized in that the barrel is defined by a nested part and a protruding part, the nested part having an external end which is disposed exteriorly of the one of the pair of mold plates and an internal end which, in use, is disposed interiorly of the one of the pair of mold plates and engaged therewith, the protruding part, in use, extending to the nested part and being releasably coupled thereto in end-to-end communicating relation.

Abstract: A linear motion mechanism for moving an injection unit in the front-rear direction relative to a machine base supporting the injection unit includes: a pair of first linear guides configured to linearly move the injection unit relative to the machine base; and one or more pairs of second linear guides arranged on the rear side relative to the pair of first linear guides, and configured to linearly move the injection unit relative to the machine base.

Abstract: A method for controlling an injection molding process based upon an actual plastic melt pressure including identifying an optimal actual plastic melt pressure curve over time based on a baseline cycle, and adjusting in a subsequent cycle an injection pressure in order to cause a monitored pressure of the molten thermoplastic material to follow the optimal actual plastic melt pressure curve over time. A method for controlling an injection molding process based upon an plastic melt pressure setpoint adjusted using a cavity pressure, wherein the cavity pressure is multiplied by a process factor. Further, a method for controlling an injection molding process using real time cavity pressure including identifying an optimal cavity pressure curve over time based on a baseline cycle and adjusting, in a subsequent cycle, an injection pressure in order to cause a monitored cavity pressure to follow the optimal cavity pressure curve over time.

Abstract: The present invention discloses an injection molding control method. The injection molding control method comprises the following steps: establishing a work command according to a plurality of production process parameters; receiving a position information directly from an injection molding machine; and controlling a servo pump to drive the injection molding machine according to the position information and the work command.

Abstract: A temperature control device is provided that is capable of making the temperature of a metallic mold speedily reach a target temperature. The temperature control device is provided with: a first medium circulating portion that circulates a medium via a first pipeline; a second medium circulating portion that circulates the medium via a second pipeline; a third medium circulating portion that circulates the medium via a third pipeline; a switching portion that switches the medium circulated through an object by selecting any one of the first pipeline, the second pipeline and the third pipeline; and a pressure supply portion that supplies a required pressure through a pressure pipe communicating with each of the first pipeline, the second pipeline and the third pipeline.

Abstract: A method of manufacturing a biodegradable dry cleaning bag is disclosed, the method including loading an environmentally friendly slurry into a hopper, extruding the environmentally friendly slurry, passing the environmentally friendly slurry through a die, inflating the environmentally friendly slurry into a cylindrical shape, thereby creating a cylindrical member, passing the cylindrical member over a first roller, and rolling the cylindrical member onto a roll.

Abstract: The invention relates to a method (100) for controlling a film production in which at least one film is produced depending on at least one specific recipe information (R), where the following steps are performed: providing different fingerprints (F), the fingerprints (F) characterizing different method executions (210) for producing a film, providing in each case at least one result information (E) for the respective fingerprint (F), the result information (E) being specific for at least one product property (D) of the produced film, storing the fingerprints (F) and result information (E) as data in a data system (200) so that the data is provided as a basis for evaluation for controlling at least one subsequent method execution (210).

Abstract: A device for attaching a mouthpiece to an innerliner of an aircraft water tank is provided. A cylinder portion of an innerliner is thermally deformed to conform to an inner circumferential portion of a cylinder-like portion, and an inner circumferential portion of a dome portion of the innerliner is attached to a skirt portion by an adhesive. A lower mold includes two sections inserted inside the innerliner from the inner side of a mouthpiece in a folded state. The two sections are opened inside the innerliner and a holding member holds the two sections in an open state. The lower mold can be disposed in the innerliner sealed from the inner side of the mouthpiece, and abutment of an outer abutting surface of an upper mold against a first annular surface and abutment of an inner abutting surface of the lower mold against a second annular surface can be performed.

Abstract: The invention relates to a process for producing a biaxially oriented pipe, comprising the steps of: a) forming a polyethylene composition into a tube, wherein the polyethylene composition comprises a bimodal or a multimodal high-density polyethylene (HDPE) and b) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe, wherein step b) is performed at an axial draw ratio of 1.1 to 3.2 and an average hoop draw ratio of 1.1 to 2.0 or step b) is performed at an axial draw ratio of 1.1 to 1.9 and an average hoop draw ratio of 1.1 to 2.0, and wherein step b) is performed at a drawing temperature which is 1 to 30° C. lower than the melting point of the polyethylene composition.

Abstract: In a three-dimensional object formed by bending and deforming a sheet-like base material made of a thermoplastic resin at a ridge line, a surface of the base material bent and oriented outward at least at the ridge line is covered with a thermal expansion layer that expands when heated to a thermal deformation temperature of the thermoplastic resin or a higher temperature, and the thermal expansion layer is expanded at the ridge line.