Sheet is cracked reasons:

1. Die is tighten more for thin sheet

2. There is impurities in mould

3. Filter net is movement or leaked

Solution:

1. Loosing the die a little

2. Loosing the mould to let impurities outside, then tighten immediate.

3. Exchanging the filter net

Bubble on surface of sheet, and with holes till cracks many place reasons:

The temperature is lower in water cooling zone

Solution:

Bubble or many holes, reduce the water flow; cracks many place, restart the machine.

Sheet thickness is uneven reasons:

1.inside and outside die is not justify

2. Deformation of mould

3. Monostearin is too many

Solution:

1.adjusting jackscrew to let it justify

2. Repair the mould

3. Reduce monostearin

Bubble is too large reasons:

1.talcum powder is too less 

2.butane is too less

Solution:

1.adding talcum powder 

2.adding butane

sheet spotted reasons:

1. Monostearin is too much 

2.the temperature is too low of 7th and 8th zone

Solution:

1. Reduce monostearin 

2.higher the set temperature or turning small the water flow

Longitudinal stripes deep reasons:

Butane is too much, 

Talcum powder is too much

Solution:

Reduce the butane 

Deduce the talcum powder

Rough surface, with white abb  reasons:

1. Die gap is too large

2.the extruding qty is not enough

Solution:

1.tighten the die

2.improve the machine engine speed and adding butane and monostearin

Sheet is crisp, easy to  break  reasons:

1.monostearin is too much 

2. Machine head temperature is too low

Solution:

1.reduce monostearin 

2.increase the machine head temperature

Sheet is shrink reasons:

1.monostearin is too less

2.machine head temperature is too high

3.the temperature is lower than 5℃ in plant

Solution:

1.increase monostearin

2.reduce the machine head temperature

3.raise the plant temperature

Sheet strip is too light  reasons:

1.machine head temperature is too high

2.butane is too less

Solution:

1.reduce the machine head temperature

2.adding butane

Sheet is off tracking reasons:

1.the gap of die is nonuniform

2.auxiliary malposition

Solution:

1.adjusting the die gap

2.adjusting the auxiliary position

Sheet is break for often reasons:

Traction speed is too fast

Solution:

Slowly the traction speed

Sheet is cracking at the confirmed position reasons:

Bruise on die

Solution:

Repair the die

常见现象

原因分析

解决方法

EPE foam sheet is cracked reasons:

1. Die is tighten more for thin sheet

2. There is impurities in mould

3. Filter net is movement or leaked

Solution:

1. Loosing the die a little

2. Loosing the mould to let impurities outside, then tighten immediate.

3. Exchanging the filter net

EPE foam sheet ubble on surface of sheet, and with holes till cracks many place reasons:

The temperature is lower in water cooling zone

Solution:

Bubble or many holes, reduce the water flow; cracks many place, restart the machine.

EPE foam sheet thickness is uneven reasons:

1.inside and outside die is not justify

2. Deformation of mould

3. Monostearin is too many

Solution:

1.adjusting jackscrew to let it justify

2. Repair the mould

3. Reduce monostearin

EPE foam sheet bubble is too large reasons:

1.talcum powder is too less 

2.butane is too less

Solution:

1.adding talcum powder 

2.adding butane

EPE foam sheet spotted reasons:

1. Monostearin is too much 

2.the temperature is too low of 7th and 8th zone

Solution:

1. Reduce monostearin 

2.higher the set temperature or turning small the water flow

EPE foam sheet longitudinal stripes deep reasons:

Butane is too much, 

Talcum powder is too much

Solution:

Reduce the butane 

Deduce the talcum powder

EPE foam sheet rough surface, with white abb  reasons:

1. Die gap is too large

2.the extruding qty is not enough

Solution:

1.tighten the die

2.improve the machine engine speed and adding butane and monostearin

EPE foam sheet  is crisp, easy to  break  reasons:

1.monostearin is too much 

2. Machine head temperature is too low

Solution:

1.reduce monostearin 

2.increase the machine head temperature

EPE foam sheet  is shrink reasons:

1.monostearin is too less

2.machine head temperature is too high

3.the temperature is lower than 5℃ in plant

Solution:

1.increase monostearin

2.reduce the machine head temperature

3.raise the plant temperature

EPE foam sheet  strip is too light  reasons:

1.machine head temperature is too high

2.butane is too less

Solution:

1.reduce the machine head temperature

2.adding butane

EPE foam sheet  is off tracking reasons:

1.the gap of die is nonuniform

2.auxiliary malposition

Solution:

1.adjusting the die gap

2.adjusting the auxiliary position

EPE foam sheet is break for often reasons:

Traction speed is too fast

Solution:

Slowly the traction speed

EPE foam sheet is cracking at the confirmed position reasons:

Bruise on die

Solution:

Repair the die

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