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Preparation before spraying construction
This paper will introduce the preparation work before spraying construction, including appearance quality inspection, surface treatment of spraying base, material configuration and debugging, pre-spraying glue at base and surface forming of spraying layer.

Appearance quality inspection

Before construction, the appearance quality should be checked, and the sprayed fiber cotton and binder should be sampled. Fiber cotton should be dry without caking, clean without dirt, and the adhesive should be free from delamination, foaming, deterioration and discoloration.

Surface treatment of sprayed substrate

Use compressed air or clean water to remove dust and dirt on the surface of the spraying machine, check whether the hanger and embedded parts are firm and fasten the loose parts; Protect doors and windows, all kinds of equipment, pipelines and non-spraying parts; Clean up the obstacles in the working face and keep the best spraying distance and angle.

Material configuration and debugging

Break up the compressed fiber cotton, continuously load the sprayed cotton into the sprayer, keep enough fiber material in the material box, and keep stirring to avoid freezing failure of the glue solution.

Pre-spraying glue at grass-roots level

After the surface of the base is cleaned, the surface of the base can be pre-sprayed with the prepared spraying glue, which is suitable and uniform and does not flow.

Surface forming of spray coating

After the surface of the product to be sprayed is dried for about half an hour, according to the different requirements of thermal insulation or sound absorption engineering, different molding tools such as rollers, pressure plates or aluminum alloys are used to shape the surface, and then adhesive is sprayed to enhance the surface strength.