Problem & Solution

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruder screw design mismatch（Variant: Mass Production Scenario）

A

Screw design needs to match material characteristics and product requirements; if necessary, customize a dedicated screw.Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screw designcompression ratioL/D ratiomixing elementsscrew matching

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruder screw design mismatch（Variant: Strengthened Measures）

A

Screw design needs to match material characteristics and product requirements; if necessary, customize a dedicated screw.Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screw designcompression ratioL/D ratiomixing elementsscrew matching

Q

Random copolymer polypropylene pipe special material (Nordic standard） PPR pipe welded joint leakage（Variant: Strengthened Measures）

A

PPR welded joint leakage is caused by improper welding parameters or welding surface contamination, requiring strict control of welding temperature, time and cleanliness.Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery PPR weldinghot-melt weldingwelding temperaturewelding timefitting matching

Q

Random copolymer polypropylene pipe special material (Nordic standard） Random copolymer polypropylene pipe special material (Nordic standard） improper processing temperature window selection（Variant: Strengthened Measures）

A

Temperature window selection is the foundation of processing, and needs to be set reasonably according to material characteristics and actual operating experience.Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery processing temperaturetemperature windowplasticization qualitymaterial degradationtemperature calibration

Q

Random copolymer polypropylene pipe cut end face uneven

A

Uneven cut end faces are caused by tool wear or improper cutting parameters, requiring tool maintenance and cutting process optimization.

Processing Machinery cut end facecutting toolcutting speedpipe coolingcutting machine calibration

Q

Random copolymer polypropylene extruded products excessive gel/gel particles

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.

Processing Machinery gelgel particlesplasticizing temperaturescrew mixingfilter screen mesh count

Q

Random copolymer polypropylene pipe failing pressure test

A

Pressure test failure is caused by insufficient wall thickness, material degradation or internal defects and needs to be systematically solved from process and material quality.

Processing Machinery pressure testpipe wall thicknessmaterial degradationcrystallinityplasticization quality

Q

Screw design mismatch of random copolymer polypropylene extruder

A

Screw design needs to match material characteristics and product requirements; customize special screws if necessary.

Processing Machinery screw designcompression ratiolength-to-diameter ratiomixing elementscrew matching

Q

Product defects caused by impurities mixed into random copolymer polypropylene raw material

A

Impurity mixing is solved by strengthening raw material management and equipment cleanliness; complete impurity prevention measures need to be established.

Processing Machinery impuritiesmagnetic rackfiltrationequipment cleanlinessraw material management

Q

Improper processing temperature window selection for random copolymer polypropylene random copolymer polypropylene

A

Temperature window selection is the foundation of processing and needs to be reasonably set according to material characteristics and actual operating experience.

Processing Machinery processing temperaturetemperature windowplasticization qualitymaterial degradationtemperature calibration

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