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81. 发明专利

JPH05185436A PRODUCTION OF URETHANE FOAM MOLDED PRODUCT 失效
公开(公告)号：JPH05185436A
公开(公告)日：1993-07-27
申请号：JP12762192
申请日：1992-05-20
申请人： NHK SPRING CO LTD , SHINETSU CHEMICAL CO
发明人： MINEGISHI TAKESHI , KUBO MASAYUKI , NOZAKI RYOSUKE , HIGUCHI TAKURO , OGAWA MASAHIKO , TANAKA MASAKI , MORIMOTO YUKIO
IPC分类号： A47C7/18 , B29C33/64 , B29C39/02 , B29C39/36 , B29K75/00 , B29K105/04 , B29L31/58
摘要： PURPOSE:To produce a urethane foam molded product prevented from the adhesion of a release agent to the surface thereof by uniformly applying the release agent enhanced in release effect to the inner surface of a mold. CONSTITUTION:The inner surface of a mold is coated with a release agent based on organopolysiloxane. An organopolysiloxane compsn. is a mixture of first organopolysiloxane wherein 0.1-5.0% of a total org. group bonded to an Si-atom is a vinyl group and at least 80% of the remaining org. group is a methyl group and second organopolysiloxane containing at least three Si- bonded hydrogen atoms per one molecule and the ratio of the Si vinyl group and the SiN group is within the range of (1:0.5)-(1:5) and both organopolysiloxanes substantially contain no non-reactive siloxane. Further, a platinum compound is added as the reaction catalyst of the Si vinyl group and the SiH group. This release agent is cured by the irradiation with ultraviolet rays or heating to form a thin uniform film on the inner surface of a mold.

82. 发明专利

JPH04332590A CUSHION BODY AND PRODUCTION THEREOF 失效
公开(公告)号：JPH04332590A
公开(公告)日：1992-11-19
申请号：JP10093091
申请日：1991-05-02
申请人： NHK SPRING CO LTD
发明人： HOSHINO KOICHI , MINEGISHI TAKESHI , TAKAHATA KIYOTSUGU
IPC分类号： A47C7/18 , B29C65/02 , B29C65/40 , B29L9/00 , B29L31/58 , B68G7/05 , D04H1/587
摘要： PURPOSE:To provide such a cushion body which has good air permeability and touch and high strength and does not generate toxic gases at the time of production. CONSTITUTION:A pad body 15 having air permeability is molded to a prescribed shape. A surface skin 17 is set in a mold 20 having suction holes 25 and impregnated wad 18a is laid thereon. The impregnated wad 18a is formed by impregnating an urethane binder liquid in the wad consisting of synthetic fibers, such as polyester. A non-air permeable hot melt film 22 is laid on the impregnated wad 18a and a negative pressure is generated in the mold 20, by which the surface skin 17, the impregnated wad 18a and the hot melt film 22 are adsorbed to the mold 20. Steam and heat are acted through the pad body 15 to cure the binder and to melt the hot melt film 22, by which the adhesion of the fibrous wadding 18 and the pad body 15, etc., are executed.

83. 发明专利

JPH0464300B2 失效
公开(公告)号：JPH0464300B2
公开(公告)日：1992-10-14
申请号：JP17833586
申请日：1986-07-29
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , KUBO MASAYUKI
IPC分类号： B68G7/05 , B29C65/40 , B29L31/58 , B68G7/00

84. 发明专利

JPH03197009A MANUFACTURE OF SHEET CUSHION FOAM HAVING UNEVEN HARDNESS 失效
公开(公告)号：JPH03197009A
公开(公告)日：1991-08-28
申请号：JP33506589
申请日：1989-12-26
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , SUZUKI KAZUO , HASHIMOTO SATOSHI
IPC分类号： A47C7/18 , B29C33/02 , B29C39/02 , B29C39/26 , B29C39/38 , B29K75/00 , B29K105/04 , B29L31/58 , B68G5/02
摘要： PURPOSE:To obtain desired uneven hardness by enabling attainment of the title cushion foam into elimination of CFC and obtain desired uneven hardness by making percentage of defectiveness such as roughnening of cell or a crack within a foam extremely low even by high-mold-temperature casting, by a method wherein foaming raw materials comprised of main raw materials such as polyol and polyisocyanate and auxiliary raw materials comprised of water for a catalyst and foaming and a foam stabilizer are foam-molded within a foaming mold to which a temperature difference is given. CONSTITUTION:Foaming raw materials comprised of main raw materials such as polyol and isocyanate and auxiliary raw materials comprised of water for a catalyst and foaming and a foam stabilizer are foam-molded within a foaming mold to which a temperature difference is given. Even sole use or combined use with polymerpolyol may be good fork the polyol. A temperature difference may be given to a mold so that a mold part molding a side part of a sheet becomes a low temperature than that of a mold part molding a main part of the sheet, in the foaming mold. An organic metallic catalyst and third class amine catalyst may be used single or jointly as the catalyst and a silicon surface active agent may be used also as the foam stabilizer.

85. 发明专利

JPH03126510A CUSHIONING BODY AND ITS MANUFACTURE 失效
公开(公告)号：JPH03126510A
公开(公告)日：1991-05-29
申请号：JP26500289
申请日：1989-10-13
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , YUBE KUNIO , TAKAHATA KIYOTSUGU
IPC分类号： B29C67/20 , B29C39/10 , B29K75/00 , B29K105/04 , B29K105/06 , B29L31/58
摘要： PURPOSE:To obviate a poisonous organic solvent and improve the environmental properties and workability by a method wherein urethane resin containing an isocyanate group which is made into a block and possessing a nonionic and/or ionic hydrophilic part is used as binder resin for joining among fibers. CONSTITUTION:The title cushioning body is comprised by containing an isocyanate group made into a block into fibers interwining in three dimensions, infiltrating a urethane resin aqueous liquid having nonionic and/or ionic hydrophilic part into those and performing heating and curing of those. The surface of the fibers is covered with urethane resin and fibers are united with each other with urethane resin at an intertwining part of the fibers. Cotton of various organic synthetic fibers can be used as the fibers intertwining in the three dimensions. The urethane resin is obtained by reaction of isocyanate compound obtained by blocking the isocyanate group with a blocking agent such as oximes, malonic acid esters and phenols with polyol obtained by adding and polymerizing a mixture of ethylene oxide and propylene oxide to glycerine. It is preferable that density of a urethane resin aqueous liquid and a heating temperature for curing are respectively 25-35wt.% and 115-150 deg.C.

86. 发明专利

JPH0376854A CUSHION MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH0376854A
公开(公告)日：1991-04-02
申请号：JP20774189
申请日：1989-08-10
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , TAKAHATA KIYOTSUGU , YUBE KUNIO
IPC分类号： B68G1/00 , D04H1/587
摘要： PURPOSE:To obtain a cushion material suitable as a material for furniture, bedding, etc., by impregnating solidly interlaced water absorbable fibers with an aqueous urethane emulsion and curing under heating to cover the surface and the interlaced parts of fibers with the urethane resin. CONSTITUTION:(A) water absorbable fibers such as nylon fibers are solidly interlaced. On the other hand, (B) an aqueous urethane obtained by reacting (i) a polyol prepared by addition polymerization of glycerin and ethylene oxide, etc., with (ii) an isocyanate compound are processed into 25-35wt.% aqueous emulsion, which is impregnated into the component A and cured under heating preferably at 100-150 deg.C to give the objective cushion material.

87. 发明专利

JPH02292007A MOLDING METHOD OF FOAM BODY AND ITS MOLD 失效
公开(公告)号：JPH02292007A
公开(公告)日：1990-12-03
申请号：JP11299789
申请日：1989-05-02
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , HASHIMOTO SATOSHI , SAKAMOTO HIROKI
IPC分类号： B29C39/10 , B29C33/42 , B29C39/12 , B29C39/26 , B29K105/04 , B29K105/06 , B29L31/58
摘要： PURPOSE:To integrate a foam without causing defoaming in the foam by dividing the inside of a mold into a plurality of foaming chambers by the partitioning plates and laying worsted felt over the adjacent foaming chambers and closing the gap between the mold and the partitioning plates and simultaneously foaming the foaming raw materials in the respective foaming chambers. CONSTITUTION:A mold is equipped with a bottom force 1 and a top force 2. A plurality of partitioning plates 3 are lengthened toward the top wold 2 in the bottom force 1. When the top force 2 is allowed to butt against the bottom force 1, the inside of the mold is divided into a plurality of foaming chambers 4a, 4b. The different foaming raw liquids are introduced into the respective foaming chambers 4a, 4b. In the partitioning plate 3 parts, worsted felt 5 is laid over the adjacent foaming chambers 4a and 4b, 4b and 4c to close the gap between the top force 2 and the partitioning plates 3. The adjacent foaming chambers are connected by this worsted felt 5. When the forming raw materials are simultaneously foamed, defoaming of the foam side wherein foaming pressure and strength of a cell are small is prevented. In the case of foaming, the foams molded in the respective foaming chambers 4a, 4b are joined by the worsted felt 5 and therefore the foams are excellently integrated.

88. 发明专利

JPH02255408A MANUFACTURE OF CUSHIONING MATERIAL 失效
公开(公告)号：JPH02255408A
公开(公告)日：1990-10-16
申请号：JP7452789
申请日：1989-03-27
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , SAKAI TORU , MURAKAMI KENJI
IPC分类号： B65G5/00 , D04H1/655
摘要： PURPOSE:To lighten a cushioning material for a chair or the like by setting up a liquid binder before being hardened superficially on one face side of a fiber aggregate of specified thickness, spraying gas from the top of the binder, and dispersively impregnating the binder in the fiber aggregate and then hardening it. CONSTITUTION:A fiber aggregate 21 is held between a reticulating body 20 and another reticulating body 22 smaller in mesh than the former, and a binder 23 is applied on the reticulating body 22, feeding it into a device 10. Next, compressed air is fed to a device 11 from a supply source 13, having it vigorously sprayed toward the fiber aggregate 21 from a nozzle 12. This air jet passes through a baffle part 17 of a base from an opening 15 and is discharged out. At this time, the binder 23 is blown into the fiber aggregate 21, and it is dispersed and impregnated uniformly among fibers. Then, its hardening takes place. With this constitution, adhesive strength is securable with a minimum amount of binder and lightweightiness is promotable.

89. 发明专利

JPS62127014A CUSHION BODY 失效
公开(公告)号：JPS62127014A
公开(公告)日：1987-06-09
申请号：JP26513185
申请日：1985-11-27
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , YONESHIGE YASUO , TAKAHATA KIYOTSUGU , MISUMI ATSUSHI , TAKEHANA TOSHIHIRO , SAKAI TORU
IPC分类号： A47C27/12

90. 发明专利

JPS61146514A MANUFACTURE OF CUSHION BODY 失效
公开(公告)号：JPS61146514A
公开(公告)日：1986-07-04
申请号：JP26748084
申请日：1984-12-20
申请人： NHK SPRING CO LTD
发明人： MINEGISHI TAKESHI , TAKAMURA YOSHIAKI
IPC分类号： B29C39/12 , B29C39/22 , B29C39/24 , B29C44/04 , B29K105/04 , B29L31/58
摘要： PURPOSE:To enable the number of processes to be reduced, contriving to obtain the cushions in which the foams with different hardnesses are laminated in one time foaming by reaction-curing each foaming stock solution, after the partition plates inserted in a mold have been rapidly drawn out and the openings of the mold have been closed. CONSTITUTION:Partition plates 2 are inserted into a mold. Different foaming stock liquids A, B are poured into the foaming chambers having been partitioned, and the inside of the mold is sealingly closed, covering 5 them from their upsides, and then, both foaming stock solutions are foamed simultaneously. Before this reaction is finished and said solutions are cured, the partition plate 2 is drawn out. This drawing out is rapidly carried out, whereby each foam to be foamed in the mold does not mix one another, and each stock solution is foamed with its characteristic, and further the characteristic of each foam is expressed as it is. After the partition plates 2 have been drawn out, a cramp 7 is fitted to the upper surface of the cover at the opening portion 6, and the opening portions 6 are closed, thereby preventing the flowing out of the foam and reaction-curing the foaming stock solution in the mold 1.

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