Sandblasting hose The appearance defect of outer layer with bamboo stripe is more likely to occur in the compound containing chloroprene lemon gum. The main reasons are as follows:

1： The water cloth winding pressure is insufficient and the pressure applied to the pipe body is uneven, one side is too large and the other side is too small.

2： The rubber (sheet) is too cold and hard or Mooney viscosity is too high.

3： The vulcanization starting point of rubber hose is too fast.

4： The width of the water cloth is too large.

5： The overlapping width of water cloth is too small.

The solutions are as follows:

1： Apply sufficient and uniform pressure to the pipe body when wrapping the water cloth.

2： The storage time of the control film shall be used up within 2-12h, not more than 3 days. The film containing neoprene shall be used up as soon as possible, or it shall be re refined and re produced. In addition, it shall be noted that the storage period of the raw neoprene rubber shall not be too long, and the neoprene rubber beyond the storage period shall not be used for the outer layer.

3： Check that the new water cloth to be used should not have tight edges.

4： The used water cloth shall be reused according to the original elastic edge of the water cloth.

5： The water cloth with different widths shall be selected according to the size of the outer diameter of the wrapping hose (for hose with an outer diameter of less than 30mm, the width of the water cloth shall not exceed 90mm), and the overlapping width of the water cloth shall be 3/5-2/3 of the width of the water cloth.

6： Adjust the amount of softener in the outer glue formula, Sandblasting hose Increase plasticity, and use sulfonamides post effect accelerator (such as cz, etc.) to increase the flow of rubber compound at the initial stage of vulcanization. 　　

7： Keep the ambient temperature of the operation area above 18 ℃.