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Vacuum insulation material and method for manufacturing same

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 excellent productivity, convenient manufacturing method, and excellent heat insulation

Active Publication Date: 2014-10-15
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 insulation material and method for manufacturing same
  • Vacuum insulation material and method for manufacturing same
  • Vacuum insulation material and method for manufacturing same

Examples

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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

Provided is a vacuum insulation material that has a stable quality, that is capable of maintaining initial thermal insulation properties over a long period of time, and that is capable of maintaining the form of a sheet even when the use of a binder, which causes the problem of volatilization in a vacuum state, is avoided. The vacuum insulation material according to the present invention includes a laminated body (10) of inorganic fiber sheets (1), and an enveloping member (11) that vacuum-seals the laminated body. In the inorganic fiber sheets, inorganic fiber strand groups that contain curved inorganic fiber strands having a cut length (L) of between 3mm and 12mm are randomly distributed, and at least some of the inorganic fiber strand groups are engaged with 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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IPC IPC(8): F16L59/06D04H1/4209
CPCD04H1/4391D04H1/4209D04H1/559F16L59/065D04H1/43912
Inventor 井前宪司
Owner IMAE KOUGIYOU KK
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