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公开(公告)号：JPH07242764A
公开(公告)日：1995-09-19
申请号：JP3568294
申请日：1994-03-07
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUJITA HIROSHI , SHIMABARA KAZUO
IPC: F25D23/06 , C08G18/00 , C08G18/08 , C08G18/09 , C08G18/62 , C08J9/14 , C08L25/00 , C08L25/02 , C08L33/00 , C08L33/04 , C08L33/08 , C08L51/00 , C08L51/04
Abstract: PURPOSE:To obtain a heat-insulating box in which the inner box is firmly bonded to the heat-insulating material made by using HCFC 123 or HCFC 141b as the blowing agent, the inner box does not discolor during molding, and the inner box does not suffer from cracking due to the above blowing agent by using a specified resin composition as the material for the constituent inner resin box. CONSTITUTION:This box is one composed of an inner resin box, an outer metallic box and an integrally expanded urethane placed between the boxes, wherein the inner resin box is made from a composition obtained by mixing a graft copolymer obtained by polymerizing a monomer mixture comprising 35-52wt.% vinyl cyanide compound and 48-65wt.% aromatic vinyl compound in the presence of a conjugated diene synthetic rubber with a copolymer comprising 35-52wt.% vinyl cyanide compound and 48-65wt.% aromatic vinyl compound, a poly-n-butyl acrylate coated with a copolymer comprising 35-52wt.% vinyl cyanide compound and 48-65wt.% aromatic vinyl compound and an aromatic vinyl oligomer.
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公开(公告)号：JPH06300428A
公开(公告)日：1994-10-28
申请号：JP8714293
申请日：1993-04-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： MATSUMOTO TAKUYA , MURONO YOSHIRO , NAKADA JUNICHI , TSUJITA HIROSHI , SHIMABARA KAZUO , KOTORII TOSHIO , OHASHI NOBUO , OBATA SHINGO , MORIKIYO KAZUHIRO , HIRAMATSU SHIZU
Abstract: PURPOSE:To obtain a door surface of good quality by forming an urethane heat insulating material from a particular composition and forming the door surface from a graft copolymer of a particular composition, a copolymer of a vinyl compound cyanide of a particular composition and an aromatic vinyl compound, and a mixture of a resin compound of a particular composition and polymethyl metacrylate. CONSTITUTION:A urethane heat insulating material is formed by polyol, a foam stabilizer, a catalyst, a foaming agent such as HCFC 132 and the like, and an isocyanate component such as an organic isocyanate of polymeric MDI. A door surface of a resin is formed by a graft copolymer which is obtained by polymerizing a mixture of a vinyl compound cyanide of 35-52 percent by weight and an aromatic vinyl compound of 48-65 percent by weight in the presence of conjugate diene based synthetic rubber, a copolymer of a vinyl compound cyanide of 35-52 percent by weight and an aromatic vinyl compound of 48-65 percent by weight, and a resin composite of 30-70 percent by weight coated with the copolymer and mixed with poly n-butylacrylate resin and polymethyl methacrylate of 70-30 percent by weight.
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公开(公告)号：JPH05322438A
公开(公告)日：1993-12-07
申请号：JP12316692
申请日：1992-05-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUJITA HIROSHI , MURONO YOSHIRO , NAKADA JUNICHI , SHIMABARA KAZUO , OBATA SHINGO , MORIKIYO KAZUHIRO , MATSUMOTO TAKUYA , OHASHI NOBUO , KOTORII TOSHIO
Abstract: PURPOSE:To acquire a strong chemical attaching property, and prevent cracks, etc., from happening by a method wherein a urethane insulating material for which a specified flon is used as a foaming agent is integrally expanded in a box-shaped space formed by a door front made of a resin, and a specified coating is applied on the surface of the door front with which the insulating material comes into contact. CONSTITUTION:The title heat insulating door 2 is constituted by integrally expanding a urethane insulating material 4 for which flon 123 or flon 141b is used as a foaming agent in a box-shaped space being formed by a door front 3 made of a resin. Also, an acryl or urethane coating 9 is applied on the surface of the door front 3, which comes into contact with the urethane insulating material 4. For the acryl or urethane coating 9, a double liquid reacting type is used, and this type is hard to swell by the flon 123 or flon 141b, which is a foaming agent, and is provided so as to work as a barrier. By this method, the door front 3 made of a resin does not receive a strong chemical attack, and the molecular chain of the resin is prevented from being broken, and cracks are prevented from being made.
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公开(公告)号：JPH05118744A
公开(公告)日：1993-05-14
申请号：JP28104991
申请日：1991-10-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： MATSUMOTO TAKUYA , SHIMABARA KAZUO , MURONO YOSHIRO , TSUJITA HIROSHI , KOTORII TOSHIO , NAKADA JUNICHI , OHASHI NOBUO , OBATA SHINGO , MORIKIYO KAZUHIRO
Abstract: PURPOSE:To solve the quality deterioration problems resultant from an increase in a material cost of an outer shell and an outer shell manufacturing process and obtain an insulation door to which a foaming agent, which is outside the object of Freon regulation, is applied in the case when the rear side of the outer shell of the insulation door of a refrigerator is coated with corrosion resistant paint. CONSTITUTION:This insulation door comprises an outer shell 1 of the insulation door, an inner shell 3, a frame member 2, a foaming agent 7 which is for foaming insulation material and is filled between the inner shell and frame member 2 and a coat 5 applied on the surface of the outer shell.
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公开(公告)号：JPH11304350A
公开(公告)日：1999-11-05
申请号：JP10761998
申请日：1998-04-17
Applicant: MATSUSHITA REFRIGERATION
Inventor： SHIMABARA KAZUO , TSUJITA HIROSHI
Abstract: PROBLEM TO BE SOLVED: To rid a sash of the influence on environment caused by the occurrence of hydrogen chloride gas or the influence on human body caused by dioxin by mixing complex salt between magnesium oxides and silicic acid by a specified range of weight percentage. SOLUTION: A hard sash is made by extrusion-molding a resin composition where complex salt between magnesium oxides and silicic acid is mixed by 5-50 wt. percentage into homopolymer polypropylene resin and the melt float rate is 1.3 g/10 minutes. The section of the extrusion molding is made gradually into the final sectional dimensions, arranging sizing molds in three stages such that 1.3 times, 1.2 times, and 1.0 time the final sectional dimension, using a base of dimensions 1.5 times a base of vinyl chloride resin, thus the transformation by extreme shrinkage in molding is suppressed, and also the cooling by water is performed at 20 deg.C or under. Hereby, there is no influence on a human body, and the dimensional accuracy of sash can be secured.
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Patent Agency Ranking
公开(公告)号：JPH063040A
公开(公告)日：1994-01-11
申请号：JP16067592
申请日：1992-06-19
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKADA JUNICHI , MURONO YOSHIRO , TSUJITA HIROSHI , SHIMABARA KAZUO , KOTORII TOSHIO , OHASHI NOBUO , MATSUMOTO TAKUYA , OBATA SHINGO , MORIKIYO KAZUHIRO
IPC: F25D23/02
Abstract: PURPOSE:To enable the sealing of a gap between a heat insulated door and a heat insulated box completely by arranging a heat insulated box to be provided with a recess which abuts a soft packing on the outer circumference of a heat insulated door equipped with a switch section for turning ON or OFF an electromagnet and with a flange having an attraction section which the electromagnet abuts. CONSTITUTION:A soft packing 13 as elastic body comprising a thermoplastic resin foam or the like is provided on the outer circumference of a heat insulated door 3 while an electromagnet 14 which is magnetized or demagnetized by turning ON or OFF a switch section 15 is provided circumferentially. On the other hand, a flange 17 having a recess 18 abutting the soft packing 13 and an attraction part 19 abutting the electromagnet 14 are formed on a heat insulated box 2 having a front opening being opened or closed with the heat insulated door 3. Then, a user of a refrigerator closes the heat insulated door 3 and when the switch section 15 is turned 'ON', the electromagnet 14 has a magnetic force and gets closely on the attraction part 19 of the flange 17 while the soft packing part 13 gets closely on the recess 18. Thus, the heat insulated door 3 is closed tight on the heat insulated box 2.
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公开(公告)号：JPH05118743A
公开(公告)日：1993-05-14
申请号：JP28104891
申请日：1991-10-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： OBATA SHINGO , MURONO YOSHIRO , NAKADA JUNICHI , TSUJITA HIROSHI , MORIKIYO KAZUHIRO , OHASHI NOBUO , KOTORII TOSHIO , MATSUMOTO TAKUYA , SHIMABARA KAZUO
Abstract: PURPOSE:To prevent a strong odor of mercaptan from remaining in a chamber by adopting an inner box made of high nitrile ABS resin, forming a clear film inside the inner box and filling an insulation material, which uses a specific Freon as a foaming agent, into a spot between the inner box and the outer box. CONSTITUTION:The inner surface of an inner box is coated with an about 200 to 300mu thick constantly dried-state acrylic or urethane clear film, thereby forming a high nitrile ABS resin-made inner box 5. An insulation material 4 is filled into a box-shaped space between the inner box 5 and an outer box 3 where HCFC 123 or HCFC 141b is used as a foaming agent, thereby completing an insulation box member of a refrigerator 1. Since the clear coating 6 is applied to the inner surface of the inner box 5 in this manner, it is difficult for a polymerization and composition agent C12 mercaptan to penetrate. Its action as a barrier prevents a strong odor of mercaptan from remaining in the chamber. It is also arranged to eliminate a strong mercaptan odor by mixing zeolite particles or aromatic agent as an odor adsorbing material with the ABS resin.
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公开(公告)号：JPH0599561A
公开(公告)日：1993-04-20
申请号：JP26179391
申请日：1991-10-09
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKADA JUNICHI , MURONO YOSHIRO , SHIMABARA KAZUO , KOTORII TOSHIO , TSUJITA HIROSHI , OHASHI NOBUO , MATSUMOTO TAKUYA , OBATA SHINGO , MORIKIYO KAZUHIRO
Abstract: PURPOSE:To ensure design properties excellent in a round by arranging a urethane heat insulating material yielded by foaming Freon 123 in a box-shaped space formed with a door surface iron plate and a cap door comprising alloy resin including crystalline resin inserted into the peripheral edge of the door surface iron plate. CONSTITUTION:A heat insulating door 2 for use in a refrigerator, etc., is formed by inserting a cap door 11 with a U-shaped cross section into the peripheral edge of a door surface iron plate 3, and disposing a methane heat insulating material 5 in a box-shaped space formed by the door surface iron plate 3 and the cap door 11. A reinforcing rib 12 is formed on the cap door 11. Thereupon, the cap door 11 is formed with ABS allay resin including 40-50 pts.wt of crystalline resin of nylon and polypropylene. The urethane heat insulating material 5 is formed by integrally foaming Freon 123 as a foaming agent. Hereby, excellent design properties of a round form is kept while the cap door 11 is prevented from being cracked against the chemical attack property of the Freon 123.
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公开(公告)号：JPH0571864A
公开(公告)日：1993-03-23
申请号：JP23601091
申请日：1991-09-17
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOTORII TOSHIO , MURONO YOSHIRO , NAKADA JUNICHI , TSUJITA HIROSHI , SHIMABARA KAZUO , OHASHI NOBUO , MATSUMOTO TAKUYA , OBATA SHINGO , MORIKIYO KAZUHIRO
Abstract: PURPOSE:To prevent dropping of water droplets generated at the time of cooling by previously integrally molding a foamable vinylidene chloride heat insulator so as to match the shape of a space made of an inner plate, an outer plate and a frame material, and then assembling the inner plate, the outer plate and the material. CONSTITUTION:A foama vinylidene chloride heat insulator 26 is previously molded to match the shape of a space 12 formed of an inner plate 4, an outer plate 2 and a frame material 3. The insulator 26 is integrally molded and assembled. Thus, the insulator 26 is integrally molded to eliminate gaps to prevent dropping of water droplets from the gaps of the material 3 and the plate 4 upon generation of the droplets due to cooling of humidity in the atmosphere to be invaded from the gap between the plate 2 and the material 3 to arrive at the plate 4 and condensed. That is, gaps of the insulators 26 to be formed upon aligning of the insulators 26 in the space are eliminated.
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公开(公告)号：JPH09119770A
公开(公告)日：1997-05-06
申请号：JP30214295
申请日：1995-10-25
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUJITA HIROSHI , SHIMABARA KAZUO
Abstract: PROBLEM TO BE SOLVED: To solve the problem of splitting resin inner case when urethane heat insulator containing HCFC or cyclopentane is used as foaming agent for the heat insulation case of a refrigerator and to provide a resin inner case having high recycling ratio while maintaining the conventional high processability. SOLUTION: The adhesive layer of a resin inner box to urethane heat insulator is formed of copolymer obtained by polymerizing the monomer mixer of 50 to 95wt.% of aromatic vinyl compound and 5 to 50wt.% of methyl methacrylate compound, the surface layer is formed of mixture of graft copolymer obtained by polymerizing aromatic vinyl compound monomer in the presence of conjugated diene synthetic rubber and aromatic vinyl polymer, and the intermediate layer is formed of mixture of the graft copolymer obtained by polymerizing aromatic vinyl compound monomer in the presence of conjugated diene synthetic rubber and aromatic vinyl compound, and comminuted article of the inner case material made of the adhesive, surface and intermediate layers is formed of mixed resin composition.
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