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公开(公告)号：DE60302371D1
公开(公告)日：2005-12-29
申请号：DE60302371
申请日：2003-01-30
Applicant: RIKEN TOKIO TOKYO KK , JSP CORP
Inventor： HAYASHI TOSHIKATSU , KUNIMOTO AKIRA
Abstract: A radio wave absorber having a good radio wave absorption characteristic and high impact resistance is provided which is less susceptible to damages by chipping or the like during the manufacture or in use. The radio wave absorber unit includes two or more molded bodies in a pyramid or wedge shape whose radius at the tip end is from 0.5 mm to 7.5 mm and a base. A radius at the trough between adjacent molded bodies is 7.5 mm or less. A unit including molded bodies and the base is integrally formed from propylene-based conductive expanded beads. The bases of adjacent units are connected by fitting their recessed and raised portions to each other. The expanded bead size is in the range from 2 mm to 10 mm, and beads with two or more different bead diameters can be used. A hollow molded body can be formed by providing a hollow structure inside.
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公开(公告)号：AT311413T
公开(公告)日：2005-12-15
申请号：AT01967750
申请日：2001-09-20
Applicant: JSP CORP
Inventor： SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO
Abstract: Expanded, substantially non-crosslinked polypropylene resin beads capable of producing a high rididity foamed molding at a relatively low temperature. The beads are produced by a process including a step of dispersing substantially non-crosslinked polypropylene resin particles in a dispersing medium containing an organic peroxide to obtain a dispersion, a step of heating the dispersion to decompose the organic peroxide and to modify the surface of the surface-modified polypropylene resin particles, and a step of expanding the non-crosslinked, surface-modified polypropylene resin particles using a blowing agent.
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公开(公告)号：DE60114429D1
公开(公告)日：2005-12-01
申请号：DE60114429
申请日：2001-08-24
Applicant: JSP CORP
Inventor： TEZUKA HISAO , UEGURI MOTOAKI
Abstract: AbstractA method of producing a composite material, including providing a surface layer in a first mold such that the surface layer is in contact with an interior surface thereof, disposing a second mold in position so that a space is defined between the second mold and the surface layer, the second mold having plural groups of perforations; feeding expanded resin beads to the space to fill the space therewith, deaerating the space, and then introducing a heating medium into the space successively through the plural groups of perforations of the second mold to fuse and bond the expanded resin beads.
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公开(公告)号：DE60023409D1
公开(公告)日：2005-12-01
申请号：DE60023409
申请日：2000-08-03
Applicant: JSP CORP
Inventor： KOGURE NAOCHIKA , GOKURAKU HIROYUKI
IPC: B32B27/00 , B29C44/04 , B29C47/04 , B29C49/04 , B29C49/22 , B29C49/48 , B29L9/00 , B29L22/00 , B32B5/18 , B32B27/32 , B29C44/06
Abstract: Disclosed herein is a multi-layer expansion-molded article (1) of a polypropylene resin, which is obtained by molding a multi-layer parison comprising a foamed resin layer (12) and a resin layer (13) provided on the outer side of the foamed resin layer (12) in a mold in such manner that at least part of the opposed inner surfaces of foamed resin layer in the parison are fusion-bonded to each other, and has a polypropylene resin layer (13) on the surface of a foamed polypropylene resin layer (12), wherein a melt tension, MT (gf) and a melt flow rate, MFR (g/10 min) obtained by measurement to a polypropylene resin forming the foamed resin layer (12) in the expansion-molded article satisfy the following relationship (1), and a melt tension, MT (gf) and a melt flow rate, MFR (g/10 min) obtained by measurement to a polypropylene resin forming the resin layer (13) on the surface of the foamed resin layer (12) satisfy the following relationship (2) when the melt flow rate, MFR is at least 0.3 (g/10 min), or the melt tension, MT is at least 10 (gf) when the melt flow rate, MFR is not lower than 0.2 (g/10 min), but lower than 0.3 (g/10 min): log MT > -0.74 log MFR + 0.66 log MT > -1.02 log MFR + 0.47
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公开(公告)号：ES2240951T3
公开(公告)日：2005-10-16
申请号：ES04004288
申请日：2004-02-26
Applicant: JSP CORP
Inventor： YOSHIZAWA TAKU , SASAKI KAZUTOSHI , TSURUGAI KAZUO
IPC: C08J9/228 , C08J3/12 , C08J9/00 , C08K3/04 , C08K5/3435 , C08K5/3492 , C08L23/00 , C08L23/10
Abstract: Una partícula expandida de resina de poliolefina, que contiene entre el 0, 5 y el 20% en peso de negro de carbono, y que contiene entre el 0, 01 y el 10% en peso de un retardador de llama de amina inhibido, que se muestra por medio de la fórmula general (I). R1NH-CH2CH2CH2NR2CH2CH2NR3CH2CH2CH2NHR4 (I) de tal manera que, en la fórmula (I), R1 y R2 son una mitad de s-triacina que se muestra mediante la fórmula (II) que se da más adelante, uno de entre el R3 y el R4 es una mitad de s-triacina que ilustra con la fórmula (II), y el otro de los R3 y R4 es un átomo de hidrógeno; y, en la fórmula (II), R es un grupo metilo, un grupo propilo, un grupo ciclohexilo o un grupo octilo, y R5 es un grupo alquilo que tiene entre 1 y 12 átomos de carbono. (II)
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Patent Agency Ranking
公开(公告)号：DE69827294D1
公开(公告)日：2004-12-02
申请号：DE69827294
申请日：1998-12-01
Applicant: JSP CORP
Inventor： SASAKI HIDEHIRO , SAKAGUCHI MASAKAZU , AKIYAMA MITSUHIRO , TOKORO HISAO
Abstract: The present invention relates to expanded polypropylene resin beads which comprise, as a base resin, a random copolymer obtained by copolymerizing propylene and one, or two or more in admixture of comonomers selected from ethylene and alpha -olefins having four or more carbon atoms by use of a metallocene polymerization catalyst, wherein said base resin is mainly composed of an isotactic polypropylene resin having a melting point exceeding 140 DEG C and a melt flow rate of 12 g/10 minutes or below. As the base resin, there is preferably used, for example, a random copolymer of propylene and ethylene. In the invention, the expanded beads are filled in a mold, and heating the expanded beads with steam to cause expansion of the beads until the beads are mutually fused together thereby producing a molded article having a shape of the mold.
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公开(公告)号：MY116615A
公开(公告)日：2004-03-31
申请号：MYPI9300511
申请日：1993-03-23
Applicant: ARON KASEI KK , SANKO SOGYO CO LTD , JSP CORP
Inventor： HATTORI KAZUHIDE , YAMAJI HIROYUKI , HATAKEYAMA YOSHIKAZU , SHIDA YOSIYUKI , TAMURA ATUSHI , KITAOKA TAKUMI , KOHAMA TAKASHI
Abstract: A PROCESS FOR PRODUCING EXPANDED PLASTIC (1) WITH A SKIN AND A MOLDING APPARATUS THEREFOR ARE DISCLOSED, THE PROCESS COMPRISING BLOWING A PARISON BEING HELD IN A CLOSED BLOW MOLD (5) TO OBTAIN A HOLLOW ARTICLE (2A), FILLING THE HOLLOW ARTICLE (2A)WITH THERMOPLASTIC PREEXPANDED RESIN BEADS (3) BEFORE THE HOLLOW ARTICLE (2A) IS COOLED TO SOLIDIFY, HEATING AND FUSING SAID BEADS (3), AND COOLING THE EXPANDED PLASTIC (1). A HOLLOW article (2A) AND AN EXPANDED BODY ARE COMPLETELY FUSED TOGETHER, AND IMPROVED PRODUCTIVITY IS OBTAINED. (FIG. 1)
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公开(公告)号：DE69727682D1
公开(公告)日：2004-03-25
申请号：DE69727682
申请日：1997-08-08
Applicant: JSP CORP
Inventor： TSURUGAI KAZUO , TOKORO HISAO
Abstract: A shock-absorbing material composed of an expansion-molded article of polypropylene resin particles is excellent in shock-absorbing property and impact resilience compared with shock-absorbing materials composed of other resin materials, but has not been said to be satisfactory in stiffness and energy absorption efficiency. The present invention relates to a shock-absorbing material composed of an expansion-molded article produced by using foamed particles comprising, as a base resin, a polypropylene homopolymer obtained by using a metallocene polymerization catalyst. The base resin has a tensile modulus of at least 15,000 kgf/cm , and the expansion-molded article has a crystal structure that an inherent peak a and a high-temperature peak b appear as endothermic peaks on a DSC curve obtained by the differential scanning calorimetry of the molded article. The high-temperature peak b is a peak appeared on the temperature side higher than a temperature corresponding to the inherent peak a, and the quantity of heat at the high-temperature peak is at least 25 J/g.
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公开(公告)号：DE69724753D1
公开(公告)日：2003-10-16
申请号：DE69724753
申请日：1997-12-20
Applicant: JSP CORP
Inventor： NAITO MASATO , KITAHAMA TAKASHI , NARITA KEIGO , KIKUSAWA RYOU
IPC: B29C67/20 , B29C44/30 , B29C44/44 , B29K23/00 , B29K105/04
Abstract: Disclosed herein is a method for continuously producing an expansion-molded article, comprising feeding foamed particles between a belt continuously traveling along the upper surface within a passageway defined by structural members and having a rectangular form in section and a belt continuously traveling along the lower surface within the passageway, and then causing the foamed particles to successively pass through a super heated steam-feeding region and a cooling region within the passageway. The foamed particles used are foamed particles of a polyolefin resin, in which a recovery factor from compression defined by the equation (1): wherein V1 is the original bulk volume of the foamed particles, and V2 is a bulk volume of the foamed particles measured upon elapsed time of 10 seconds after the foamed particles are compressed to a bulk volume of 60% on the original bulk volume, and the compressive force is then removed, is at least 80%. The foamed particles are transferred to the super heated steam-feeding region after the foamed particles are compressed on the upstream side of the super heated steam-feeding region, and then released from a part or the whole of the compression. An apparatus for producing the expansion-molded article is also disclosed.
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公开(公告)号：MY114837A
公开(公告)日：2003-01-31
申请号：MYPI9900987
申请日：1999-03-17
Applicant: JSP CORP
Inventor： SASAKI HIDEHIRO , SAKAGUCHI MASAKAZU , AKIYAMA MITSUHIRO , TOKORO HISAO
Abstract: DISCLOSED HEREIN ARE FOAMED AND EXPANDED BEADS OF A POLYPROPYLENE RESIN FOR MOLDING, WHICH COMPRISE AN UNCROSS LINKED PROPYLENE RANDOM COPOLYMER HAVING A MELTING POINT OF AT LEAST 140 C. AS A BASE RESIN, WHEREIN THE TIME REQUIRED TO ATTENUATE AN AIR PRESSURE WITHIN THE FOAMED BEADS APPLIED BY A PRESSURIZING TREATMENT WITH AIR FROM 1. 2 KGF/CM2(G) TO 0.8 KGF/CM1G) UNDER ATMOSPHERIC PRESSURE AT 230 C. IS AT LEAST 80 MINUTES, AND THE CNI VALUE OF THE FOAMED BEADS, WHICH IS DEFMED BY THE FOLLOWING EQUATION (1): CNI=LOGL0[PWXER ¸(2.24XD3XB)] (1) WHEREIN PW IS AN AVERAGE WEIGHT (MG) PER FOAMED BEAD, ER IS A BULK EXPANSION RATIO (TIME) OF THE FOAMED BEADS, D IS A CELL DIAMETER (MM) OF THE FOAMED BEADS, AND B IS A DENSITY OF THE BASE RESIN, IS SMALLER THAN 3.80. (FIGURE 1)
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