摘要:
An embodiment of the present invention provides an air injection valve-integrated spray for spraying and applying polyurethane foam to a desired portion of a tire. The spray includes a polyurethane foam chamber (210) disposed at an end of a coupling portion and keeping polyurethane foam under pressure and an air delivery chamber (220) delivering air injected from an air injection valve (100) to a breaking portion of the polyurethane foam chamber, in which the breaking portion of the polyurethane foam chamber is broken by air coming out of the air delivery chamber, so the polyurethane foam is sprayed.