| 摘要 |
PURPOSE: An air-conditioning duct formed out of corrugated cardboard is provided to ensure improved thermal insulation effects because of the low thermal conductivity of corrugated cardboard. CONSTITUTION: An air-conditioning duct is formed by bending a panel(100). The panel comprises an aluminum sheet(110), an outer liner(120), a corrugated medium(130), an inner liner(140), and an iron sheet(150) that are successively laminated. The outer liner, the corrugated medium, and the inner liner are composed of linen 40 parts by weight and cotton 10 parts by weight with pulp 100 parts by weight.
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