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公开(公告)号：JPH02120598A
公开(公告)日：1990-05-08
申请号：JP27488988
申请日：1988-10-31
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKAMOTO HIDEO , KATAOKA JINKO , UEKADO KAZUTO
Abstract: PURPOSE:To make exhaust air loss extinct, shorten air releasing time, and improve productivity by disposing core foam of minute foaming skeleton and space foam of coarse foaming skeleton in a sealed container with an air releasing valve. CONSTITUTION:Spacer foam 9 made of hard urethane foam obtained by mixing 5.0-8.0 weight parts of bivalent metallic salt of powder unsaturated monocarboxylic acid into 100 weight parts of polyol and foaming this mixture as a bubble communicating agent is disposed at the inner surface of a sealed container 7 with an air releasing valve 8 as an air releasing passage, and further inside, core foam 10 made of hard urethane foam obtained by mixing 0.1-5.0weight parts of bivalent metallic salt of powder saturated monocarboxylic acid into 100weight parts of polyol and foaming this mixture as a bubble communicating agent is disposed, and after being sealed, released through the air releasing valve so as to obtain an insulating body 1. As a result, extra exhaust air other than that in the insulating body is extinct, air releasing time is shortened, and productivity is improved.
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公开(公告)号：JPH0280893A
公开(公告)日：1990-03-20
申请号：JP23395288
申请日：1988-09-19
Applicant: MATSUSHITA REFRIGERATION
Inventor： UEKADO KAZUTO , KATAOKA JINKO , NAKAMOTO HIDEO
Abstract: PURPOSE:To improve productivity by filling up a sealed receptacle where silicon- group defoaming agent is applied to the inner surface thereof with hard urethane foam using saturated monocarboxylic acid bivalent metallic salt as bubble connecting agent by continuous bubbling. CONSTITUTION:In a sealed receptable 4 made of stainless steel, silicon group defoaming agent is applied to the inner surface thereof and hard urethane foam 5 of an open cell structure, which is poured through a filling port 6 and bubbled continuously, is formed therein. The hard urethane foam 5 contains saturated monocarboxylic acid bivalent metallic salt as bubble connecting agent. Accordingly, in the foaming process, bubble films are broken, including a skin portion of hard urethane foam that contacts a sealed receptacle 4 and the open cell rate is 100%, so that when the interior of the sealed receptacle 4 is decompressed, exhaust can be accomplished in a short time and the internal pressure of a heat insulator 8 is uniformly reduced to a designated pressure to close a valve 7. Furthermore, as there is no independent bubble portion, the internal pressure will not be increased during a long period of time so as to keep the initial heat insulating performance.
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公开(公告)号：JPH0272294A
公开(公告)日：1990-03-12
申请号：JP22273988
申请日：1988-09-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： UEKADO KAZUTO , KATAOKA JINKO , NAKAMOTO HIDEO
Abstract: PURPOSE:To shorten the exhaust time so as to enable mass production to be attained by sheathing a foaming material of open cell structure with a vessel of metal and plastic laminated film and reducing a pressure in the inside to close it. CONSTITUTION:A foaming material of open cell structure, obtained by additionally compounding 10 to 30% polyether polyore with an aromatic amine compound serving as the initiator for benzylic ether type phenol resin further by mixing a catalyst, bubble arranging agent, foaming agent and a foam communication agent, is externally coated with a vessel 5 formed by a metal and a plastic laminated film, and reducing a pressure in the inside of the vessel to close it, a heat insulating structure 6 is obtained. Thus because a core member is formed by fine foam framework, it is coated with the vessel 5 formed by the metal-plastic laminated film, when a pressure in the inside is reduced, excellent heat insulating performance is obtained even by a pressure of about 0.1 to 0.01mmHg easy to handle industrially, and mass production efficiency is substantially improved by shortening the exhaust time.
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公开(公告)号：JPH01236221A
公开(公告)日：1989-09-21
申请号：JP6401488
申请日：1988-03-17
Applicant: MATSUSHITA REFRIGERATION
Inventor： UEKADO KAZUTO , KATAOKA JINKO , NAKAMOTO HIDEO
Abstract: PURPOSE:To obtain the title material of excellent heat-insulating property easily in good productivity, by mixing an organic polyisocyanate with a specified polyol component, a foam stabilizer, a catalyst and a blowing agent comprising dibromodifluoromethane and expanding the resulting mixture. CONSTITUTION:A polyol component comprising polyethylene polyol of a hydroxyl value of, for example, 450mgKOH/g, obtained by the addition polymerization of propylene oxide in the presence of o-tolylenediamine as an initiator, and optionally, a p-tolylenediamine-based aromatic amine polyether is mixed with an organic polyisocyanate, a foam stabilizer, a catalyst and dibromomethane, and the resulting mixture is expanded.
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公开(公告)号：JPH01236220A
公开(公告)日：1989-09-21
申请号：JP6401688
申请日：1988-03-17
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKAMOTO HIDEO , KATAOKA JINKO , UEKADO KAZUTO
Abstract: PURPOSE:To obtain the title material of excellent heat-insulating property easily in good productivity, by expanding a mixture of an organic polyisocyanate, a liquid benzyl ether phenol resin composition, a foam stabilizer, a specified catalyst and a blowing agent comprising dibromofluoromethane. CONSTITUTION:An organic polyisocyanate is mixed with a benzyl ether phenol resin composition such as phenol polyol of a hydroxyl value of 420mgKOH/g and a water content
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Patent Agency Ranking
公开(公告)号：JPH01121675A
公开(公告)日：1989-05-15
申请号：JP27765187
申请日：1987-11-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKAMOTO HIDEO , KATAOKA JINKO , UEKADO KAZUTO
IPC: F25D23/08
Abstract: PURPOSE: To enhance heat insulating performance of a heat insulating box by wetting a continuously foamed hard form mixed with a carbon dioxide absorbent and arranged between inner and outer boxes previously with a Freon solvent. CONSTITUTION: A hard form 7 foamed continuously by a urethane material while mixing a carbon dioxide absorbent is wetted previously with a Freon solvent 9 and bonded to the rear surface of an inner box 3 by means of an adhesive tape, or the like, and then the inner and outer boxes 3, 2 are integrated by foaming a hard urethane form 4 between them thus obtaining a heat insulating box. Since the continuously foamed hard form mixed with the carbon dioxide absorbent 8 is wetted previously with the Freon solvent 9, the absorbent 8 does not touch the air to adsorb moisture therefrom. Carbon dioxide absorbing capacity is not deteriorated but carbon dioxide is absorbed completely resulting in the enhancement of heat insulating performance of a heat insulating box.
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公开(公告)号：JPH01102288A
公开(公告)日：1989-04-19
申请号：JP26216687
申请日：1987-10-16
Applicant: MATSUSHITA REFRIGERATION
Inventor： KATAOKA JINKO , UEKADO KAZUTO , NAKAMOTO HIDEO
IPC: F25D23/06
Abstract: PURPOSE: To improve a heat insulating performance of a heat insulated box by a method wherein a packing material packing carbon dioxide gas adsorption agent pre-wetted in advance with fluorocarbon solvent in a plastic film by a specified outer packing material is arranged between an inner box and an outer box and they are integrally foamed with hard urethane foam. CONSTITUTION: A packing member 7 in which carbon dioxide gas adsorption agent 8 pre-wetted by non-soluble fluorocarbon solvent 9 to a plastic film is resolved or bulged out to fluorocarbon foaming agent with a plastic film is arranged between an inner box 3 and an outer box 2, it is integrally foamed with hard urethane foam 4 to form a heat insulating box 1. Therefore, carbon dioxide gas generated and remained in hard urethane foam is adsorbed into carbon dioxide gas adsorption agent through cracks or pin holes on the outer cover generated by fluorocarbon foaming agent, so that the adsorbing speed is quite fast and gases such as air, moisture or the like are not discharged out of the carbon dioxide gas adsorption agent and the gas of fluorocarbon solvent is dispersed in cells of the hard urethane foam. Accordingly, a gas heat transfer coefficient in the cell is reduced and a heat transfer coefficient of the hard urethane foam is improved, resulting in that a rigid heat insulating box having a superior heat insulating performance can be attained.
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公开(公告)号：JPS6428475A
公开(公告)日：1989-01-31
申请号：JP18625587
申请日：1987-07-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： KATAOKA JINKO , UEKADO KAZUTO , NAKAMOTO HIDEO
IPC: F25D23/06
Abstract: PURPOSE: To improve heat insulation performance of a heat insulation wall by arranging a gas permeable sheet impregnated with a carbonic acid gas adsorber between an inner plate and an outer plate, and integrally foaming hard urethane foam, thereby removing carbonic acid gas in the urethane foam. CONSTITUTION: A gas permeable sheet 7 impregnated with a carbonic gas adsorber made of metal hydroxide and a moisture adsorber made of metal salt anhydride or the like is arranged between an inner plate 3 and an outer plate 2, integrally foamed by hard urethane foam 4 to form a heat insulation wall. The carbonic gas contained in the urethane foam is moved in a thickness direction of the wall to easily adsorb the adsorbent impregnated into the sheet. In this case, a rate control of the moving speed of the carbonic acid gas is such that a moving distance is short in a wall thickness direction, and hence it can be moved in a short time. And, an influence to the heat insulation performance is small by using the sheet 7, and adsorption area is increased, and adsorption ability is extremely improved. Accordingly, the carbonic acid gas in the urethane form 4 can be easily removed by the adsorbent.
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公开(公告)号：JPS6416642A
公开(公告)日：1989-01-20
申请号：JP17326887
申请日：1987-07-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： UEKADO KAZUTO , KATAOKA JINKO , NAKAMOTO HIDEO
Abstract: PURPOSE:To permit the absorption and removal of carbon dioxide gas, contained in a foam, and improve the heat insulating performance of a heat insulating wall, by a method wherein the heat insulating wall is constituted of an outer plate, an inner plate and an insulating material, consisting of hard urethane foam filled between both plates, while hot melt, containing the absorbent of carbon dioxide gas, is applied on the opposing surfaces of both plates. CONSTITUTION:Carbon dioxide gas absorbent 5 is mixed into hot melt 6 and is molten by heating, thereafter, the hot melt 6 is sprayed onto the opposing surfaces of an outer plate 2 and an inner plate 3 by a sprayer. Hard urethane foam 4 is poured and filled into the space between both plates 2, 3 to form a heat insulating wall 1. According to this constitution, carbon dioxide gas, generated and remaining in the hard urethane foam 4, may be absorbed and removed quickly. As a result, a gas thermal conductivity in air bubbles is reduced and the thermal conductivity of the hard urethane foam is improved whereby the insulating performance of the heat insulating wall can be improved.
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公开(公告)号：JPS646678A
公开(公告)日：1989-01-11
申请号：JP16007587
申请日：1987-06-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKAMOTO HIDEO , KATAOKA JINKO , UEKADO KAZUTO
IPC: F25D23/06
Abstract: PURPOSE: To reduce a thermal conductivity of gas contained in cells by a method wherein a film having carbon dioxide gas adsorbing agent contained therein is placed between an inner box and an outer box of thermal insulation boxes such as a refrigerator and a freezer or the like and the film is integrally foamed with the rigid urethane foam. CONSTITUTION: A thermal insulating box 1 such as a refrigerator or a freezer is formed such that rigid urethane foam is injected between an outer box 2 and an inner box 3, foamed and curved. In this case, a film 7 having carbon dioxide gas adsorbing agent such as zeolite, active carbon, metallic hydroxide and metallic oxide or the like is fixed to the outer surface of the inner box 3 by an adhesive tape or the like, so that carbon dioxide gas contained in the rigid urethane foam 4 is moved toward a thickness direction of the thermal insulating wall and then carbon dioxide gas is easily adsorbed into the carbon dioxide gas adsorbing agent contained in the film 7. A thermal conductivity of gas in the cells is reduced in this way, a thermal conductivity of the rigid urethane foam is improved and its thermal insulating performance can be improved.
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