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Vacuum heat insulating material and manufacturing method thereof

A technology of vacuum heat insulation material and manufacturing method, which is applied in non-woven fabrics, heat exchange equipment, textiles and papermaking, etc., to achieve the effects of convenient manufacturing method, excellent productivity, and excellent heat insulation

Active Publication Date: 2016-08-24
IMAE KOUGIYOU KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent Documents 3-5 use water-soluble polymers such as polyvinyl alcohol fibers or polyvinyl alcohol particles as binders

Method used

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  • Vacuum heat insulating material and manufacturing method thereof
  • Vacuum heat insulating material and manufacturing method thereof
  • Vacuum heat insulating material and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0041] Such as figure 1 As shown, the vacuum heat insulating material of the present invention is a vacuum heat insulating material comprising a laminate 10 formed by laminating inorganic fiber sheets 1, 1 .

[0042] In addition, in the inorganic fiber sheet 1, inorganic fiber strands including curved inorganic fiber strands with a cut length (L) of 3-12 mm are randomly dispersed, and at least a part of the inorganic fiber strands are bonded to each other to form Flaky.

[0043] The curved inorganic fiber thread can be obtained by cutting a filament of a wavy curve (two-dimensional curve) at a specific length, can also be obtained by cutting a filament of a helical three-dimensional curve at a specific length, or can be obtained by cutting a random filament at a specific length. Curvilinear filaments with loops or curves are obtained. Representative examples include: filaments shaped into a wave formed by a curved line (wave forming wire) that are cut at intervals of 3 mm to...

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Abstract

To provide a vacuum heat insulating material with high quality stability, which can maintain the sheet shape and maintain the initial heat insulation performance for a long period of time even without using a binder that volatilizes in a vacuum. The vacuum heat insulating material of the present invention includes a laminate (10) of inorganic fiber sheets (1) and an outer packaging material (11) formed by vacuum sealing the laminate, wherein, in the inorganic fiber sheets, a cut length ( L) Inorganic fiber strands of curved inorganic fiber strands of 3-12 mm are randomly dispersed, and at least a part of the inorganic fiber strands are bonded to each other.

Description

technical field [0001] The present invention relates to a vacuum heat insulating material used in refrigerators, refrigerators, heat preservation boxes, water heaters, etc., and more specifically relates to vacuum-sealing a laminate of inorganic fiber sheets produced by a wet papermaking method with an outer packaging material Vacuum insulation materials and methods of manufacture thereof. Background technique [0002] As heat insulating materials used in refrigerators, refrigerators, heat preservation boxes, water heaters, etc., vacuum heat insulating materials excellent in heat insulating properties are used. Conventionally, as a vacuum insulation material, a material formed by pressurizing and compressing glass wool is used, and at the same time, the glass wool board produced by bonding is stored in a container with excellent gas barrier properties, and the inside of the container is evacuated and sealed (for example, JP Show No. 60-14695 gazette: patent document 1). ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/06D04H1/4209
CPCD04H1/4209D04H1/559F16L59/065D04H1/43912
Inventor 井前宪司
Owner IMAE KOUGIYOU KK