| 摘要 |
PURPOSE:To connect the titled sheets simply and in good water resistance by temporarily bonding with the sheets to be connected, then, heating and compressing a heat seal tape composed of a hotmelt type adhesive agent layer capable of temporarily bonding at a low temperature and a crosslinking polyolefin. CONSTITUTION:The heat seal tape 2 composed of the hotmelt type adhesive layer 3 that contains 10wt% at least of adhesive layer element having the melting point at about 50-110 deg.C and can adhere temporarily at low temperatures about 50-110 deg.C and a crosslinking polyolefin layer 4 is put on each other along the edges to be connected of two thick plastic sheets 1, 1' to preheat the adhesive agent layer 3 of the heat seal tape 2 and/or the surface of the edge part by a gas burner 5 and to temporarily bond the heat seal tape 2 and the plastic sheet at low temperatures about 50-100 deg.C. Then the thick plastic sheets 1, 1' are bonded by heating the heat seal tape 2 fully by a gas burner 5' from the outside of the heat seal tape, and compressing it by the roll 6. |
