| 摘要 |
<p>PURPOSE:To obtain the object product efficiently, hygienically and inexpensively by a method wherein flexible polyurethane foam chips are heated and compressed over a specific compression magnification to bond foam chips together without adhesive. CONSTITUTION:Flexible polyurethane foam scrap in the form of chips is inserted into a mold of compressible structure, for example, and heated at 180-250 deg.C for 1-20min., compressed at the magnification of compression by which block foam having an apparent density over about 4.5 times as much as the means apparent density of said foam can be obtained and integrated to prepare the object product.</p> |
