Film for vacuum heat insulating material, and vacuum heat insulating material
A vacuum heat insulation material and core material technology, which is applied in the direction of heat insulation protection pipelines, thin material processing, heat exchange equipment, etc., can solve the problems of reduced gas insulation performance, and achieve no reduction in heat insulation performance, high reliability, Excellent gas barrier effect
Inactive Publication Date: 2012-09-12
OKURA IND
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Problems solved by technology
[0005] However, the film for a vacuum heat insulating material obtained by laminating a conventional film on a protective layer has a problem in that the gas barrier property decreases after being bent or deformed.
Method used
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Embodiment 1
[0044] The protective layer is a co-extruded stretch film with a thickness of 15 μm consisting of nylon-based resin (6 μm) / EVOH (3 μm) / nylon-based resin (6 μm), the gas barrier layer is aluminum foil with a thickness of 6.5 μm, and the heat-sealing layer is 50 μm thick These linear low-density polyethylene films were sequentially laminated and bonded using a urethane-based adhesive to obtain a film for a vacuum heat insulating material.
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Abstract
Provided are a film for a vacuum heat insulating material, said film being superior in gas barrier properties to the existing films for vacuum heat insulating materials and capable of sustaining the excellent gas barrier properties even after folding or deforming, and a vacuum heat insulating material wherein a core material is hermetically sealed and packaged in said film. The film for a vacuum heat insulating material is characterized by comprising a protective layer formed of a co-extruded and stretched film, which is composed of a nylon-based resin, an ethylene / vinyl alcohol copolymer and a nylon-based resin being layered in this order, a gas barrier layer, and a heat-fusible layer.
Description
technical field [0001] The present invention relates to a film for a vacuum heat insulating material and a vacuum heat insulating material. Background technique [0002] In recent years, from the viewpoint of protecting the global environment, especially energy saving, people have demanded materials with excellent thermal insulation performance. In this regard, vacuum insulation materials have particularly excellent thermal insulation performance, so insulation materials used in refrigerators It is widely used in heat insulation boards for residential heat insulation walls, etc. This vacuum heat insulating material includes a core material and a film for a vacuum heat insulating material covering the core material. [0003] As a film for vacuum heat insulating materials, excellent gas barrier properties are required in order to prevent intrusion of external air (air) and maintain a vacuum state for a long period of time. Therefore, a laminated film including a protective l...
Claims
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IPC IPC(8): F16L59/06B32B15/08B32B15/088B32B27/28B32B27/34
CPCB32B15/08B32B15/20B32B27/08B32B27/306B32B27/32B32B27/34B32B27/36B32B2307/304B32B2307/31B32B2307/7242Y10T428/231Y10T428/2817F16L59/065
Inventor 福泽良一村井俊之
Owner OKURA IND
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