A kind of preparation method of polyurethane sealant
A technology of polyurethane and caulking agent, applied in packaging, packaging objects under special gas conditions, special packaging objects, etc., can solve the problems of low degree of automation, high labor expenditure, low filling efficiency, etc., to reduce production costs, The effect of increased efficiency
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[0031] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and To facilitate its practice, but not as a limitation of the invention.
[0032] See attached Figure 1-9 Shown, a kind of polyurethane joint filler preparation method, its preparation method specifically comprises the following steps:
[0033] S1. Raw material filling: fill polyurethane white material and polyurethane black material into the aerosol tank in sequence through the polyurethane caulk raw material filling equipment;
[0034] S2. Gas filling: install a valve seal at the mouth of the aerosol can filled with raw materials in step S1, and fill a certain amount of dimethyl ether and propane butane gas into the tank in turn, a...
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