FAQs about PVC Foam Board Production

 There are variety of problems in PVC Foam board production currently, they will affect the quality of the products. For example: screw clearance, temperature, die clearance, water crust, die type, etc. Gihug technical department has sorted out the following methods through years of industry experience: Common problems and solutions in the PVC foam board production for your reference.  
2017-08-23

Yellow on the board surface

Lack of Stabilizer, increase the amount of stabilizer. Lack of external lubricant

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2017-08-23

Yellow in the middle part of the board surface.

Local temperature of the mould is high, lower the corresponding temperature. Lack

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2017-08-23

Board thickness is nonuniform.

The clearance of die lip is improperly, readjust the clearance of die lip. Choke

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2017-08-23

The board is brittle.

Extruder temperature is too high or too low, readjust the extruder temperature. T

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2017-08-23

The board or sheet surface is rough, not smooth.

Lack of external lubricant, increase the amount of external lubricant. Lack of co

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2017-08-23

There are stripes perpendicular to the extrusion direction.

The viscosity of the foaming regulator is too high, change the the foaming regula

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2017-08-23

There are large bubbles inside the board.

Insufficient melt strength, increase the amount of foam regulator The 5th zones t

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2017-08-23

The board is bent (free foam).

The temperature of three roller is improperly, readjust the temperature of three

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2017-08-23

Foam board with large cell size.

The extruder temperature is high, lower the extruder temperature. Lack of foaming

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2017-08-23

The board thickness is difficult to control and the board moves back and forth.

The external lubricant is too much, reduce the amount of external lubricant. The

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2017-08-23

The cell size of board core is large, while the cell size of the board surface is small.

The extruder temperature is high, lower the extruder temperature. The lubrication

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  • Total 1 Page 11 Records