Thermal insulator

Patent · Tue Jul 16 04:00:00 EDT 1985

OSTI ID:6308213

Yamamoto, R; Asada, Y; Matsuo, Y; Mikoda, M

A thermal insulator comprises an expanded resin body having embedded therein an evacuated powder insulation portion which consists of fine powder and a container of film-like plastics or a film-like composite of plastics and metal for enclosing the powder. The resin body has been expanded by a Freon gas as a blowing agent. Since a Freon gas has a larger molecular diameter than the constituent gases of air, it is less likely to permeate through the container than air. Thus present invention provides a novel composite insulator which fully utilizes the benefits of vacuum insulation without necessitating a strong and costly material for a vacuum container.

• Assignee: Matsusita Electric Industrial Co., Ltd. (Japan) Matsushita Reiki Co. (Japan)
• Patent Number(s): US 4529638
• OSTI ID: 6308213
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
AIR FLOW
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
DESIGN
ELEMENTS
EXPANSION
FLUID FLOW
FLUID MECHANICS
FREONS
GAS FLOW
HALOGENATED ALIPHATIC HYDROCARBONS
HYDRAULICS
MATERIALS
MECHANICS
METALS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POWDERS
REFRIGERATORS
RESINS
SYNTHETIC MATERIALS
THERMAL EXPANSION
THERMAL INSULATION
VACUUM SYSTEMS