How to spray mineral fibre construction
1, grass-roots level treatment: use compressed air or water to clean up dust and dirt on the spraying surface; check whether the hanging parts and buried parts are secure, loose parts should be fastened, such as the original base surface has been damaged or there are serious cracks, should be repaired first. Protect the doors, windows and various equipment, pipelines and non-sprayed parts with plastic film, and block the non-sprayed parts and ventilation pipeline holes. Clear the obstacles on the working surface to ensure the smooth movement of the sprayer and its safety, and maintain the best spraying distance and spraying angle.
2, spraying bottom coating: adhesive blending, before use, the adhesive must be clean water, strictly in accordance with the quality ratio of glue: water = 10:1 for the proportion, shall not be arbitrarily added to dilute the water, the use of about 160 litres of plastic drum mixing, the use of stirrers to ensure that the adhesive and the water is completely uniformly mixed, if the amount of use less than the whole barrel, shall be stirred evenly and then in accordance with the dosage amount of take.
Debugging fibre spraying machine, should be in strict accordance with the operating instructions for the equipment to test the spraying host wind pressure, glue pump pressure and feeding device, through the sample test spraying, glue flow and the measurement of the amount of cotton, and gradually adjust the range of wind pressure and feed mixing speed, until the fibre spraying state is stable, to achieve the requirements of the spraying process. Ensure that the adhesive remains atomised and the spraying of the gun nozzle is continuous and stable. The spraying angle should ensure that the adhesive and fibre cotton meet at a distance of 20-30cm in front of the spray gun. Spraying host wind pressure control at 20-30KPa, to maintain a stable, spray adhesive pump pressure control at 1-2KPa, the cotton spray volume should be 0.8 kg/min ~ 1.25 kg/min, glue mixture should be ensured with the amount of cotton sprayed to maintain consistency, has achieved a good bonding effect.
Place the thickness scale according to the measured partition, set one for every 5m2 area as the reference of spraying thickness, the height of the scale should be higher than 20% of the designed spraying thickness to ensure that the design requirements are met after shaping.
Grass-roots surface cleaning, you can use the spray adhesive has been prepared aqueous solution of spray adhesive on the substrate pre-spray treatment, the amount of glue is appropriate and uniform, shall not be exposed to the bottom, do not flow.
