| 摘要 |
PROBLEM TO BE SOLVED: To provide a process whereby a thermoplastic resin foam having a uniform thickness can be obtained and the formed cuttings can be recycled. SOLUTION: In conveying a foamable thermoplastic resin sheet which comprises substantially uniformly arranged foamable thermoplastic resin particles containing a foaming agent and integrally joined to each other through foamable thermoplastic resin films along the production line, the particles are cut to a definite height, and the sheet is foamed by heating to the decomposition temperature of the foaming agent or above.
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