| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joint welding tool which is available for welding a joint of a resin floor material, and controls hot air blown from a hot air pipe of the joint welding tool to the floor material, and particularly a joint welding tool which imparts a beautiful finish to a joint of a floor material made of an olefin resin. <P>SOLUTION: The joint welding tool 1 for the resin floor material is formed of a resin softening chamber 6, a guide pipe 7, and the hot air pipe 8. The resin softening chamber 6 is equipped with a press-contact portion 5 for press-fitting a softened welding rod 2 into a joint groove 4 in the floor material 3 to fill the groove. The guide pipe 7 leads the welding rod 2 to the resin softening chamber 6. The hot air pipe 8 extends from the resin softening chamber 6 in a direction that is opposite to the press-contact portion 5, for supplying hot air to the resin softening chamber 6. The joint welding tool 1 has a hot air shielding wall 9 at a lower opening of the hot air pipe 8 in a manner extending from a location opposite to the resin softening chamber 6 in a direction of the same, to thereby define a preheated air outlet 10 by the hot air shielding wall 9 and the welding rod 2. Then the width (L) of the preheated air outlet 10 is set in the range of 0.3 to 3 mm. <P>COPYRIGHT: (C)2004,JPO |
