| 摘要 |
PURPOSE: A spray gun for foaming polyurethane solution is provided which mixes more than two kinds of fluid components and spouts a certain amount of the mixed hardening foaming agent. CONSTITUTION: A gun for foaming polyurethane solution comprises the parts of: a gun-type body(10) wherein a couple of injectors(14) to inject polyurethane solution, a spout hole, a couple of passages(16) to reciprocate a needle valve(20) and a space part(10d) wherein a trigger(30) is inserted to move are placed; the needle valve which is inserted into the passage to open and shut the spout hole; a coil spring(28) which always makes the needle valve located at the front position; and a nozzle(40) which is inserted into the front spout, mixes two components of polyurethane solutions spouted from the spout hole and sprays. |
