Abstract: To provide a treatment tool for endoscopic surgery which has, in an insertion part, two or more bending parts that can be independently operated to bend, and which has distal forceps pieces that can be opened and closed, and rotated.

Abstract: The invention provides a multilayered model tooth for dental training that has a crown part not easily chipped in cutting training such as crown restoration training while reconstructing a multilayered structure similar to that of a natural tooth. The multilayered model tooth for dental training includes a crown part 1 artificially produced by simulating an enamel layer 3 as a surface layer and a dentin layer 4 as an inner layer and a root part 2, and the model tooth is fabricated in a unified manner such that the enamel layer is extended from the tip of the model tooth to the root part side beyond the cervical line 6 and at least the adjacent part to the crown part and the surface of the root part in the vicinity of the adjacent part is covered with the enamel layer of the crown part. In this case, the thickness of the enamel layer covering the root part surface on the cervical line is preferably in the range of 0.02 mm to 0.3 mm.

Abstract: The present application is intended to provide a tooth model for dentistry practice and a dental practice device showing no deviation of tooth axis even after repeatedly attaching/detaching. At the side of the root of the tooth model for dentistry practice having a crown part 1 and a root part 2, a model tooth fixing part 3 which is made of a flexible synthetic material and has a column shape having a tooth axis 8 as the central axis is formed. At the bottom side, this fixing part has an enlarged part 7 enlarged outward around the tooth axis. This enlarged part is divided into smaller parts by dividing faces passing through the tooth axis and each division can deform toward the tooth axis. In this device for dentistry practice, the above-described tooth model is fixed into a fixing base 4 having a tooth fixing hole 5 capable of containing at least a part of the root part and the model tooth fixing part therein.

Abstract: The present invention provides a speaker grille-integrated foamed thermoplastic resin molding for automotive interior comprising a base portion and a speaker grille wherein at least the base portion has a foamed layer and the foamed layer in the base portion has a density ? of not greater than 0.7 g/cm3 and an average expansion ratio of the speaker grille is 1 to 1.3 times, said molding being lightweight and being strong even in its speaker grille part so that it can be used as a speaker grille-integrated foamed thermoplastic resin molding for automotive interior such as a door trim and an instrument panel.

Abstract: The present invention intends to provide a thermoplastic resin foam molding comprising a substrate having a foam layer and a projection formed in one piece together with the substrate wherein the projection hardly separates from the substrate and they are firmly jointed together. The invention provides a thermoplastic resin foam molding comprising a substrate and a projection formed in one piece together with the substrate wherein the substrate has a foam layer and a skin layer containing no voids wherein the ratio (R/L) of the curvature R of a joint between the projection and the substrate to the thickness L of the skin layer is from 3 to 50.

Abstract: The present invention provides a fiber-reinforced thermoplastic molding containing reinforcing fibers whose average fiber length is at 1 mm or more and including, across a section inwardly the thickness direction, a skin layer having almost no voids, a foamed or expanded layer with a percentage of void of 10-50 vol % and a layer with a percentage of void greater than that of the foamed or expanded layer in which the reinforcing fibers are intertwined in a complicated manner so as to establish a fiber network in which fibers are fixed to each other with the thermoplastic resin in the vicinity of their points of contact. This fiber-reinforced thermoplastic molding has a high percentage of voids and is lightweight while also having excellent rigidity against bending.

Abstract: The present invention intends to provide a thermoplastic resin foam molding comprising a substrate having a foam layer and a projection formed in one piece together with the substrate wherein the projection hardly separates from the substrate and they are firmly jointed together. The invention provides a thermoplastic resin foam molding comprising a substrate and a projection formed in one piece together with the substrate wherein the substrate has a foam layer and a skin layer containing no voids wherein the ratio (R/L) of the curvature R of a joint between the projection and the substrate to the thickness L of the skin layer is from 3 to 50.

Abstract: The present invention provides a method for producing an expanded fiber-reinforced thermoplastic resin molding, the method using a mold comprising a female and male dies and comprising processes for supplying a molten thermoplastic resin containing reinforcing fibers whose average fiber length is maintained at 1 mm or more to between the female and male dies to charge a mold cavity with the molten thermoplastic resin, opening a part or the whole of the mold in the thickness direction of a molding after the charging, and cooling a molding while maintaining a cavity clearance at the thickness of a final molding, the method wherein the mold cavity of the mold is interconnectable to the atmosphere, the method further comprising steps for (a) forming a solidified layer in the surface of the molten thermoplastic resin charged in the mold cavity, followed by (b) breaking at least a part of the solidified surface layer, introducing the air through the broken part concurrently with or after the breakage, and opening a

Abstract: The present invention provides a vehicle front-end panel made of a thermoplastic resin for constituting a vehicle front-end module, wherein the front-end panel comprises; (a) a thermoplastic resin; and (b-i) an electrically conductive material and/or (b-ii) an antistatic material, the vehicle front-end panel having electrical conductivity and/or an antistatic property.

Abstract: The present invention provides a lightweight fiber-reinforced thermoplastic molding containing reinforcing fibers whose average fiber length is maintained at 1 mm or more and having, as a sectional structure in its thickness direction, a skin layer having almost no voids, a foamed or expanded layer with a percentage of void of 10-50 vol % and a beam-supported structure layer with a percentage of void higher than that of the foamed or expanded layer in which the reinforcing fibers are intertwined complicatedly with each other and the fibers are fixed to each other with the thermoplastic resin in the vicinity of their contacts, said lightweight fiber-reinforced thermoplastic molding having a high percentage of void and is lightweight and excellent in bending rigidity.

Abstract: The present invention provides a method for producing an expanded fiber-reinforced thermoplastic resin molding, the method using a mold comprising a female and male dies and comprising processes for supplying a molten thermoplastic resin containing reinforcing fibers whose average fiber length is maintained at 1 mm or more to between the female and male dies to charge a mold cavity with the molten thermoplastic resin, opening a part or the whole of the mold in the thickness direction of a molding after the charging, and cooling a molding while maintaining a cavity clearance at the thickness of a final molding, the method wherein the mold cavity of the mold is interconnectable to the atmosphere, the method further comprising steps for (a) forming a solidified layer in the surface of the molten thermoplastic resin charged in the mold cavity, followed by (b) breaking at least a part of the solidified surface layer, introducing the air through the broken part concurrently with or after the breakage, and opening a

Abstract: The present invention provides a lightweight fiber-reinforced thermoplastic resin molding comprising a thermoplastic resin and having a skin layer and a beam-supported structure layer, the thermoplastic resin containing reinforcing fibers whose average fiber length is maintained at 1 mm or more, the skin layer having almost no voids, the beam-supported structure layer containing reinforcing fibers which are intertwined complicatedly with each other and are fixed to each other with the thermoplastic resin in the vicinity of their contacts, wherein the beams forming the beam-supported structure layer are arcuate as an aggregate in the plane direction of the molding, said a lightweight fiber-reinforced thermoplastic resin molding having a high percentage of void and is lightweight and excellent in bending rigidity.

Abstract: The present invention provides a speaker grille-integrated foamed thermoplastic resin molding for automotive interior comprising a base portion and a speaker grille wherein at least the base portion has a foamed layer and the foamed layer in the base portion has a density &rgr; of not greater than 0.7 g/cm3 and an average expansion ratio of the speaker grille is 1 to 1.3 times, said molding being lightweight and being strong even in its speaker grille part so that it can be used as a speaker grille-integrated foamed thermoplastic resin molding for automotive interior such as a door trim and an instrument panel.

Abstract: There is provided a process for producing a multi-layer molded product having a plurality of thermoplastic resin layers. This process provides for (i) a step of supplying first and second molten thermoplastic resins each through first and second resin supplying gates which are temperature-controllable independently of each other, to between female and male molds kept in an open state with a time difference being provided between supply starts of the first and second resins, and (ii) a step of closing the female and male molds after completion of supply of the first and second resins. The process enables production of high-quality multi-layer molded products having a plurality of resin layers with good repeatability under relatively low resin supply pressure and by single mold closing. Further, high-quality multi-layer molded products can readily be produced without restrictions on materials used.

Abstract: A hollow molded article having no sink marks on its surface and having an excellent appearance is produced by filling a mold cavity with a resin being in a molten state and then ejecting at least a part of the resin by sucking through a resin-ejection opening and introducing gas through a gas-introduction opening into the resin inside of which being in a negative pressure. According to this process, the use of a high-pressure gas is not required.

Abstract: A multi-layer molded article having a skin material layer made of a vinyl chloride resin, a propylene resin core, and an adhesive layer present between the skin material layer and the core, in which the adhesive layer includes (A) a layer having (a) a sublayer containing a polyester resin and an epoxy group-containing ethylene copolymer, which is bonded to the skin material of the vinyl chloride resin, and (b) a sublayer containing at least one copolymer selected from an ethylene copolymer and an epoxy group-containing copolymer, which is bonded to said propylene resin core, or (B) a layer obtained from an ethylene resin composition containing a polybasic carboxylic acid and an epoxy-group containing copolymer (c) which contains ethylene units, unsaturated carboxylic acid glycidyl ester units or unsaturated glycidyl ether units and an ethylenically unsaturated ester units other than the unsaturated carboxylic acid glycidyl ester units.

Abstract: A sound absorbing component contains a fiber-reinforced thermoplastic resin expanded body having a percentage of void being not less than 50 vol %, and a resin molded body. An air layer is provided between the fiber-reinforced thermoplastic resin expanded body and the resin molded body. This sound absorbing component can effectively absorb the sound especially in the frequency region of 500 to 3000 Hz corresponding to the exterior noise problematic in automobiles, even if it is lightweight and thin.

Abstract: An acoustic absorbing component comprising a fiber-reinforced thermoplastic resin expanded body having a percentage of void not less than 50 vol %, and a resin molded body. The fiber-reinforced thermoplastic resin expanded body is fused under a pressure to at least a part of a surface of said resin molded body.

Abstract: A process for producing a hollow article in an assembly comprising first and second mold members movable relative to each other between a closed position in which an inner surface of the assembly defines a cavity and an open position. The cavity is shaped to define a corresponding configuration to the article. According to this process, a charge containing at least one molten thermoplastic resin is supplied at the first and/or second mold member while the mold members are not in the closed position. The first mold member is moved relative to the second mold member into the closed position so as to define the cavity, and a first clamping force F1 is applied to the first and second mold members. The charge is then compressed within the mold cavity under the first clamping force F1. Thereafter, the clamping force is reduced from the first clamping force F1 to a second clamping force F2 before the molten thermoplastic resin in the mold cavity has completely solidified.

Abstract: A method for producing a fiber-reinforced thermoplastic resin molded article laminated with a skin material comprises the steps of: providing a mold assembly including a first mold and a second mold; preheating a fiber-reinforced thermoplastic resin sheet; preheating a skin material; supplying the preheated sheet and skin material to between the molds; drawing the preheated skin material under reduced pressure so as to bring the skin material into close contact with a cavity face of the second mold; and moving the molds so as to attain a closed state thereby laminating the sheet and skin material together.