| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastic cellular sheet of which the combustibility is still higher than that of a conventional product. SOLUTION: In the plastic cellular sheet manufactured by laminating a flat plastic back film (2) to the bottom surfaces of the projections of a plastic cap film (1) provided with a large number of projections so as to form a large number of closed cells (3), 0.1-20 weight % of a powder (4) of 'composite ceramics' is added to plastics.
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