Patents Assigned to Sekisui Plastics Co., Ltd.
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Patent number: 7579384Abstract: An expanded molded article having a void percentage of 5 to 50%, the molded article comprising 50 to 800 parts by weight of styrene-based resin relative to 100 parts by weight of non-crosslinked linear low-density polyethylene-based resin which can be obtained by using a metallocene catalyst, wherein the molded article is obtained by impregnating styrene-modified linear low-density polyethylene-based resin beads with a volatile blowing agent to provide expandable beads, pre-expanding the expandable beads and then subjecting the obtained pre-expanded beads to expansion molding, the styrene-modified linear low-density polyethylene-based resin beads each have the styrene-based resin dispersed in the form of particles, and a diameter of particle is 0.8 ?m or smaller in a surface region within at least 5 ?m from the bead surface and in a center region within a 5 ?m radius from the bead center.Type: GrantFiled: September 20, 2005Date of Patent: August 25, 2009Assignee: Sekisui Plastics Co., Ltd.Inventors: Hideyasu Matsumura, Tatsuya Matsugashita
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Publication number: 20090174175Abstract: A pad for absorbing an impact on leg portions excellent in impact absorbing performance at a time of collision of a vehicle and the like, and a floor spacer for a vehicle are provided. A pad 1 for absorbing an impact on leg portions has a plurality of ridges 3, 3, . . . on a bottom surface to be on a vehicle body side when placed in a vehicle, and is constituted of expandable beads. A floor spacer 10 is constituted of the pad 1 for absorbing an impact on leg portions and a horizontal pad 2. The ridge 3 has a wide portion 32 which becomes relatively wide from a midpoint in its longitudinal direction. The heel portions of the feet of an occupant are placed on the region of the wide portion 32.Type: ApplicationFiled: April 24, 2007Publication date: July 9, 2009Applicant: SEKISUI PLASTICS CO., LTD.Inventors: Shinji Takakura, Ayumi Hiraishi, Isao Suzuki
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Publication number: 20090174224Abstract: A floor spacer for a vehicle capable of effectively preventing a relative displacement of a floor carpet to the floor spacer while ensuring the easiness of removing the floor carpet without increasing manufacturing cost, and a vehicle interior structure are provided. A floor spacer 10 for a vehicle is made by integrally molding a horizontal pad 11 and a pad 12 for absorbing an impact on leg portions from expandable beads, and graining is applied to at least a part of a surface to be on a compartment interior side when disposed in the vehicle. As one embodiment, projected portions 13, 13, . . . each in a rectangular shape in plane view are formed.Type: ApplicationFiled: April 24, 2007Publication date: July 9, 2009Applicant: SEKISUI PLASTICS CO., LTD.Inventors: Shinji Takakura, Ayumi Hiraishi, Isao Suzuki
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Publication number: 20090068388Abstract: A high-strength adhesive polymer gel comprising a polymer and polyhydric alcohol, wherein the polymer comprises a monopolymer of an acrylic monomer having an alkoxyalkyl group, or a copolymer of the acrylic monomer having an alkoxyalkyl group and another acrylic monomer which can be copolymerized with the acrylic monomer having an alkoxyalkyl group, and wherein the acrylic monomer having an alkoxyalkyl group makes up 50% by weight or more of a total amount of a polymerizable monomer.Type: ApplicationFiled: March 20, 2007Publication date: March 12, 2009Applicant: SEKISUI PLASTICS CO., LTD.Inventors: Hiroyoshi Tanaka, Shuichi Sasahara
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Patent number: 7445839Abstract: The present invention provides a foam sheet for a car interior member which is capable of being molded into a desired shape while keeping an excellent sound absorbency. The foam sheet for a car interior member according to the invention comprises a modified polyphenylene ether-based resin foam sheet having an open cell ratio of 50% or more, and the modified polyphenylene ether-based resin foam sheet has pore portions formed in a single face thereof so as to be open to the face thereof. Accordingly, vibration energy of sounds is smoothly induced through the pore portions to the open cells of the foam sheet 1 to vibrate cell walls of the open cells, thereby converting the vibration energy to thermal energy. Thus, an excellent sound absorbency is exhibited.Type: GrantFiled: August 6, 2004Date of Patent: November 4, 2008Assignees: Sekisui Plastics Co., Ltd., Hayashi Telempu Co., Ltd.Inventors: Katsumi Yamaguchi, Hiroyuki Ueno, Hiroyuki Sadakuni, Akihiro Matsuura, Hideo Sugimura, Hideyuki Deguchi
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Publication number: 20080141520Abstract: There are provided a method of manufacturing a molding die that can prevent occurrence of a trouble, such as break of a sand mold when a master mold is pulled out, and a molding die that can clearly transfer a pattern onto a molding. A meshed member is fixed to an entirety or part of a molding surface of a master mold, a sand mold having a molding surface with a protrusion and recess pattern thereon is fabricated by using the master mold, and a molding die having a molding surface with the protrusion and recess pattern thereon is cast by using the sand mold. The meshed member is made up of a flexible synthetic resin sheet having a number of mesh openings.Type: ApplicationFiled: February 22, 2006Publication date: June 19, 2008Applicant: SEKISUI PLASTICS CO., LTDInventors: Shinji Takakura, Takashi Suzuki, Hiroyuki Sadakuni
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Publication number: 20070287003Abstract: An expanded molded article having a void percentage of 5 to 50%, the molded article comprising 50 to 800 parts by weight of styrene-based resin relative to 100 parts by weight of non-crosslinked linear low-density polyethylene-based resin which can be obtained by using a metallocene catalyst, wherein the molded article is obtained by impregnating styrene-modified linear low-density polyethylene-based resin beads with a volatile blowing agent to provide expandable beads, pre-expanding the expandable beads and then subjecting the obtained pre-expanded beads to expansion molding, the styrene-modified linear low-density polyethylene-based resin beads each have the styrene-based resin dispersed in the form of particles, and a diameter of particle is 0.8 ?m or smaller in a surface region within at least 5 ?m from the bead surface and in a center region within a 5 ?m radius from the bead center.Type: ApplicationFiled: September 20, 2005Publication date: December 13, 2007Applicant: Sekisui Plastics Co., LtdInventors: Hideyasu Matsumura, Tatsuya Matsugashita
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Patent number: 7294299Abstract: A granulating die B is provided with a resin discharge surface 5a to which a flow of water is contacted; and a plurality of nozzles 8 which communicate to a cylinder of an extruder are provided in this resin discharge surface 5a. Upon the resin discharge surface 5a, these nozzles 8 are not formed in at least one of its regions P which are in the direction of inflow of the flow of water and in the direction of outflow of the flow of water, and its regions R which are in directions orthogonal to this direction of inflow of said flow of water and this direction of outflow of said flow of water, but are only formed in the other regions Q thereof.Type: GrantFiled: March 11, 2004Date of Patent: November 13, 2007Assignee: Sekisui Plastics Co., Ltd.Inventors: Hideo Yamanaka, Shigeru Takeuchi
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Publication number: 20070249784Abstract: A method for producing styrene-modified polyethylene-based resin beads, including the steps of: dispersing 100 parts by weight of polyethylene-based resin beads which contain an inorganic nucleating agent and have a melting point of 95° C. to 115° C., 20 parts by weight or more and less than 300 parts by weight of a styrene-based monomer and a polymerization initiator into an aqueous suspension containing a dispersant; impregnating the polyethylene-based resin beads with the styrene-based monomer under heating the resulting dispersion at such a temperature that the styrene-based monomer does not substantially polymerize; and performing polymerization of the styrene-based monomer at a temperature of (T)° C. to (T+25)° C. (where T° C. is a melting point of the polyethylene-based resin beads.Type: ApplicationFiled: August 19, 2005Publication date: October 25, 2007Applicant: Sekisui Plastics Co., Ltd.Inventors: Hideyasu Matsumura, Tatsuya Matsugashita
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Publication number: 20070020447Abstract: The present invention provides a foam sheet for a car interior member which is capable of being molded into a desired shape while keeping an excellent sound absorbency. The foam sheet for a car interior member according to the invention comprises a modified polyphenylene ether-based resin foam sheet having an open cell ratio of 50% or more, and the modified polyphenylene ether-based resin foam sheet has pore portions formed in a single face thereof so as to be open to the face thereof. Accordingly, vibration energy of sounds is smoothly induced through the pore portions to the open cells of the foam sheet 1 to vibrate cell walls of the open cells, thereby converting the vibration energy to thermal energy. Thus, an excellent sound absorbency is exhibited.Type: ApplicationFiled: August 6, 2004Publication date: January 25, 2007Applicants: SEKISUI PLASTIC CO., LTD., HAYASHI TELEMPU CO., LTD.Inventors: Katsumi Yamaguchi, Hiroyuki Ueno, Hiroyuki Sadakuni, Akihiro Matsuura, Hideo Sugimura, Hideyuki Deguchi
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Patent number: 7138161Abstract: A polymer particle coated with silica comprising: a polymer particle derived from a polymerizable vinyl-based monomer; and a silica film covering the polymer particle, which makes a surface of the polymer particle expose so that an aperture ratio of 0.1 to 1 is possessed and a height h of the silica film and a diameter D of the polymer particle coated with silica have a relationship of 0.5?h/D<1, wherein the silica film includes a polyalkoxysiloxane oligomer condensate.Type: GrantFiled: March 24, 2004Date of Patent: November 21, 2006Assignee: Sekisui Plastics Co., Ltd.Inventor: Yuuji Noguchi
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Publication number: 20060217452Abstract: A pre-expanded beads of olefin-modified polystyrene-based resin comprising a pie-expanded beads of a polystyrene-based resin modified with a polyolefin-based resin, wherein a styrene-based monomer forming a polystyrene-based resin in the beads is used in the range of 100 to 1,000 parts by weight relative to 100 parts by weight of a polyolefin-based resin, a bulk density of each bead is 0.012 to 0.20 g/cm3, and an absorbance ratio at 698 cm?1 and 2850 cm?1 (D698/D2850) obtained from an infrared absorption spectrum of each bead surface measured by ATR method infrared spectroscopy is in the range of 0.1 to 2.5.Type: ApplicationFiled: July 23, 2004Publication date: September 28, 2006Applicant: Sekisui Plastics Co., LtdInventors: Naokuni Inada, Hideyasu Matsumura, Yasutaka Tsutsui, Ikuo Morioka
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Publication number: 20060038311Abstract: According to the present invention, there is provided a method for producing expandable styrene-modified olefin-based resin beads comprising steps of: impregnating styrene-modified olefin-based resin beads with an easily volatile blowing agent to obtain expandable resin beads, and impregnating 100 parts by weight of the expandable resin beads with 0.1 to 2.0 parts by weight of a surfactant at a temperature of 10 to 30° C. and at a pressure of 0.05 to 0.30 MPa, to obtain expandable styrene-modified olefin-based resin beads.Type: ApplicationFiled: March 22, 2004Publication date: February 23, 2006Applicant: SEKISUI PLASTICS CO., LTDInventors: Narihiko Togou, Masaya Satou
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Publication number: 20050214488Abstract: A faintly aromatic cushioning body comprising: a mixture of expanded resin beads and aroma-containing beads, the expanded resin beads having a solvent of 400 ppm or less and an average particle diameter of 0.4 to 1.4 mm, wherein the mixture of expanded resin beads and aroma-containing beads is used as a filler into a bag.Type: ApplicationFiled: July 9, 2004Publication date: September 29, 2005Applicants: EBISUKASEI CO., LTD., SEKISUI PLASTICS CO., LTD.Inventors: Yoshinobu Ishida, Yoshiyuki Ueno, Tadaatsu Ueno, Yasuhiro Sakoda
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Patent number: 6794448Abstract: Subjects of the present invention are to provide resin particles having high ability and suitable for various purposes and to provide preparation method thereof. This invention provides resin particles each of which is formed by two curved surfaces or by one curved surface and one plane surface, has a boundary line between these two surfaces and satisfies the relationships: 0.1 &mgr;m≦D≦500 &mgr;m (I) 0.05≦d/D≦0.8 (II) wherein D is particle diameter in horizontal direction and d is the maximum height in longitudinal direction in a side view in which the boundary line is placed in horizontal direction.Type: GrantFiled: September 20, 2002Date of Patent: September 21, 2004Assignee: Sekisui Plastics Co., Ltd.Inventor: Itaru Sakuma
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Patent number: 6527993Abstract: The present invention provides a process for producing a molded foam article of a crystalline aromatic polyester resin. The process is characterized by heating the surface temperature of a mold for cavity-molding to the temperature within a range of from (td+35) to (Tg+57)°C. (Tg is a glass transition temperature of the crystalline aromatic polyester resin prepuffs), thereby to mold prepuffs, and cooling the surface of the mold to a temperature not lowered than Tg for at least 20 seconds.Type: GrantFiled: June 7, 2001Date of Patent: March 4, 2003Assignee: Sekisui Plastics Co., Ltd.Inventors: Takaaki Hirai, Minoru Fujishima, Hiroyuki Ueno, Hideyasu Matsumura, Ikuo Morioka, Yukio Aramomi, Hiroyuki Yamagata
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Patent number: 6357089Abstract: A clip for a sheet electrode, which is capable of easily and reliably pinching a sheet electrode, and capable of minimizing the number of parts, thus facilitating the assembling. This clip is constructed such that a movable plate (20) provided with slots (25) to be engaged with supporting axes (13) is engaged with a substrate (10) having the supporting axes (13), and a conductive leaf spring (30) which is bent in the near middle thereof is interposed between the substrate and movable plate so as to keep them in an opened state. After the insertion of a sheet electrode (50), the movable plate is pivoted against the force of the leaf spring so as to close and pinch the sheet electrode. When the movable plate is further shifted forward along the slots, the movable plate is fixingly engaged with the substrate, thereby maintaining the pinching of the sheet electrode.Type: GrantFiled: August 23, 2000Date of Patent: March 19, 2002Assignee: Sekisui Plastics Co., Ltd.Inventors: Mikio Koguchi, Yoshikazu Kobayashi, Akiyasu Tsurushima
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Patent number: 6034143Abstract: A foamed styrene resin material has a density .rho. of 0.02 to 0.008 and a melt tension of the styrene resin of 5 to 40 gf. The relation between an average cell diameter d (.mu.m) and the density .rho. is given by the expression: ##EQU1## and a relation between a thermal conductivity .lambda. (kcal/m.multidot.h.multidot..degree. C.) and the density .rho. given by the expression: ##EQU2## Accordingly, the foamed styrene resin material has a low thermal conductivity and excellent insulating property in spite of a low density (high expansion ratio foam) thereof.Type: GrantFiled: May 27, 1999Date of Patent: March 7, 2000Assignee: Sekisui Plastics Co., Ltd.Inventors: Ikuo Morioka, Yukio Aramomi, Mutsuhiko Shimada
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Patent number: 5908590Abstract: The present invention provides a process and apparatus for readily and continuously producing foamed resin containers with labels by following a process sequence including the steps of supplying a sheet which bears label bodies printed in predetermined positions thereon, positioning a label body, punching the label body, and molding a foamed resin container with the label properly positioned. The invention further provides a process which allows for precise positioning of a label. Therefore, a thin and less stiff synthetic resin sheet can be employed for the label instead of a paper base. In addition, the label can be applied in a predetermined position on the foamed resin container without preliminarily rolling the label into a predetermined tubular shape.Type: GrantFiled: October 29, 1997Date of Patent: June 1, 1999Assignees: Sekisui Plastics Co., Ltd., Nissin Food Products Co., Ltd.Inventors: Toru Yoshimi, Hiroshi Hasegawa, Yasuhiro Ono, Akio Tsujita, Hirotomo Iwasaki, Masaru Chiba
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Patent number: 5618486Abstract: There is provided a process for manufacturing a heat-resistant molded foam product which comprises:(a) preheating a foamed polyester resin sheet of low crystallinity;(b) molding the sheet into a molded product,(i) heating only that portion of the preheated sheet which is convertible into a final product; such heating being conducted for a period of time such that the heated portion of the sheet reaches an average crystallinity of greater than about 20%, and(ii) cooling the unheated portion of said preheated sheet; and(c) cooling the resulting molded product,whereby distortion of the molded product is restrained when heated, and the molding time is shortened.Type: GrantFiled: May 16, 1995Date of Patent: April 8, 1997Assignee: Sekisui Plastics Co., Ltd.Inventors: Toru Yoshimi, Yasuo Imai, Toshinobu Kogi