Problem & Solution

Q

Random copolymer polypropylene pipe special material (Nordic standard） pipe ovality exceeding standard（Variant: Strengthened Measures）

A

Excessive ovality is caused by uneven cooling or external force deformation, and needs to be solved from cooling uniformity and pipe storage.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post ovalityuniform coolingsizing sleevehaul-off clampingpipe storage

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruded products die lines/lines（Variant: Mass Production Scenario）

A

Die lines are caused by die inner wall damage or impurities, requiring regular cleaning and inspection of the die condition.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post die linesdie scratchesimpurity cleaningrunner designfilter screen

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruded pipe bending deformation（Variant: Strengthened Measures）

A

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

Extrusion & Post pipe bendinguneven coolinghaul-off alignmentwall thickness uniformitystraightness

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruded products die lines/lines（Variant: Strengthened Measures）

A

Die lines are caused by die inner wall damage or impurities, requiring regular cleaning and inspection of the die condition.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post die linesdie scratchesimpurity cleaningrunner designfilter screen

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruder die head pressure fluctuation（Variant: Mass Production Scenario）

A

Die head pressure fluctuation is caused by unstable output or filtration system problems, requiring stabilization of extrusion parameters and maintenance of the filtration system.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post pressure fluctuationfilter screendie head temperaturebreaker plateuniform output

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruded products haul-off speed mismatch（Variant: Mass Production Scenario）

A

Haul-off speed mismatch needs to be solved by precisely adjusting haul-off parameters and ensuring stable hauling.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post haul-off speedspeed matchinghaul-off slippingclamping forcehaul-off control

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruder die head pressure fluctuation（Variant: Strengthened Measures）

A

Die head pressure fluctuation is caused by unstable output or filtration system problems, requiring stabilization of extrusion parameters and maintenance of the filtration system.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post pressure fluctuationfilter screendie head temperaturebreaker plateuniform output

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruded products haul-off speed mismatch（Variant: Strengthened Measures）

A

Haul-off speed mismatch needs to be solved by precisely adjusting haul-off parameters and ensuring stable hauling.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post haul-off speedspeed matchinghaul-off slippingclamping forcehaul-off control

Q

Random copolymer polypropylene pipe special material (Nordic standard） extrusion process unstable output/surging（Variant: Mass Production Scenario）

A

Unstable output is caused by unstable solids conveying, requiring optimization of barrel temperature and the feeding system.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post unstable outputsurgingsolids conveyinghopper bridgingscrew speed

Q

Random copolymer polypropylene pipe special material (Nordic standard） extruded products dimensional fluctuation（Variant: Mass Production Scenario）

A

Dimensional fluctuation is caused by unstable extrusion or hauling, requiring systematic stabilization of all process parameters.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post dimensional fluctuationscrew speedhaul-off speedtemperature stabilityuniform feeding

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