문제 및 해결책

Q

Unreasonable die head flow channel design of random copolymer polypropylene pipe special material extruder (Variant: mass production scenario)

A

The die head flow channel design needs to ensure uniform melt distribution and no stagnation, and the die head needs to be redesigned if necessary. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery die head flow channel uniform flow speed land section flow channel dead corner uniform temperature

Q

Mechanical properties of random copolymer polypropylene pipe special material extruded products not up to standard (Variant: mass production scenario)

A

Mechanical properties not up to standard are caused by material degradation or poor processing quality, and need to be solved from temperature control and plasticization quality. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery mechanical properties material degradation plasticization quality crystallinity regrind ratio

Q

Excessive gels/gel particles in random copolymer polypropylene pipe special material extruded products (Variant: mass production scenario)

A

Gels are caused by insufficient plasticization or raw material quality problems, and need to be solved from temperature control, screw design, and raw material selection. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery gel gel particle plasticizing temperature screw mixing filter screen mesh

Q

Bending deformation of random copolymer polypropylene pipe special material extruded pipes (Variant: mass production scenario)

A

Pipe bending is caused by non-uniform cooling or eccentric haul-off, and needs to be solved from cooling uniformity and equipment alignment. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post pipe bending uneven cooling haul-off alignment uniform wall thickness straightness

Q

Cooling system efficiency decline of random copolymer polypropylene pipe special material extruder (Variant: strengthened measures)

A

The decline in cooling efficiency is caused by insufficient water volume or high water temperature, and the cooling system needs to be improved and the water temperature controlled. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery cooling efficiency cooling water flow cooling water temperature water channel scaling cooling water tank

Q

Sizing device failure of random copolymer polypropylene pipe special material extruder (Variant: strengthened measures)

A

Sizing device failure needs to be solved from three aspects: vacuum system, cooling system, and mold accuracy. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery sizing device vacuum degree sizing sleeve wear cooling water mold concentricity

Q

Unreasonable die head flow channel design of random copolymer polypropylene pipe special material extruder (Variant: strengthened measures)

A

The die head flow channel design needs to ensure uniform melt distribution and no stagnation, and the die head needs to be redesigned if necessary. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery die head flow channel uniform flow speed land section flow channel dead corner uniform temperature

Q

Ovality of random copolymer polypropylene pipe special material pipes exceeding the standard (Variant: strengthened measures)

A

Ovality exceeding the standard is caused by uneven cooling or external force deformation, and needs to be solved from cooling uniformity and pipe storage. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post ovality uniform cooling sizing sleeve haul-off clamping pipe storage

Q

Die marks/lines on random copolymer polypropylene pipe special material extruded products (Variant: mass production scenario)

A

Die marks are caused by die inner wall damage or impurities, and the die condition needs to be cleaned and checked regularly. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post die mark die scratch impurity cleaning flow channel design filter screen

Q

Mechanical properties of random copolymer polypropylene pipe special material extruded products not up to standard (Variant: strengthened measures)

A

Mechanical properties not up to standard are caused by material degradation or poor processing quality, and need to be solved from temperature control and plasticization quality. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery mechanical properties material degradation plasticization quality crystallinity regrind ratio

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