When using a pneumatic gun during construction, due to excessive pressure, a large amount of gas is brought from the tail into the entire mortar, bringing in a large number of bubbles. At this time, the pressure of the pneumatic gun should be reduced to reduce the gas or a manual gun should be used instead.
2. Poor quality of sealant:
Some manufacturers on the market have poor packaging technology, and gas is mixed into the bottle during packaging; in addition, if the manufacturer does not evaluate the packaging materials enough, the sealant and packaging materials react, causing the packaging materials to swell, which is also easy to cause gas infiltration.
In addition, if there are a small number of bubbles at the tail, it is normal, because the vibration during transportation or the temperature difference during storage will cause piston movement between the hose and the tail plug, and then a small amount of air will enter the mortar with the piston movement.
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