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Silver Streaks/Material Flowers Appearing on the Surface of Low-Density Polyethylene Injection Molded Products (Variant: Strengthened Measures)

Silver streaks are mainly caused by raw material moisture, thermal degradation, or poor venting, and need to be systematically investigated from three aspects: raw '2079851475616104451, temperature control, and mold venting. Targeted preventive measures need to be taken in different production sc...

Material Drying silver streakmaterial flowerraw '2079851475616104451thermal degradationmold venting

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Sink Marks at Thick-Walled Parts of Low-Density Polyethylene Injection Molded Products (Variant: Strengthened Measures)

Sink marks are a typical defect of '2079851475616104452 of crystalline materials; the root cause is that the local volume shrinkage is not effectively compensated, and it needs to be solved coordinately from three aspects: holding pressure parameters, gate design, and cooling conditions. Targeted...

Injection Molding sink markholding pressurecrystallization shrinkagegate designuniform wall thickness

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Bottom Pinch-Off/Flash of High-Density Polyethylene Blow Molded Products

Bottom flash is caused by an excessively long parison or pinch-off edge problems, and the parison length needs to be adjusted and the pinch-off edge maintained.

Blow Molding bottom flashparison lengthpinch-off edgemold clamping forcemold temperature

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Unstable Cooling Line Height of High-Density Polyethylene Film

Unstable cooling line is caused by fluctuations in cooling or extrusion conditions, and the air ring parameters and environmental conditions need to be stabilized.

Extrusion & Post cooling linefrost lineair ring stabilityextrusion temperatureenvironmental airflow

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Uneven Cutting End Face of High-Density Polyethylene Pipes

An uneven cutting end face is caused by tool wear or improper cutting parameters, and the tool needs to be maintained and the cutting process optimized.

Processing Machinery cutting end facecutting toolcutting speedpipe coolingcutting machine correction

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Gel Particles/Gel Appearing in High-Density Polyethylene Film

Gel particles are caused by insufficient plasticization or raw material quality problems, and need to be solved from temperature control and raw material quality.

Extrusion & Post gel particlegelplasticizing temperaturescrew mixingfilter screen

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Declining Cooling System Efficiency of High-Density Polyethylene Extruder

Declining cooling efficiency is caused by insufficient water volume or excessive water temperature, and the cooling system needs to be improved and the water temperature controlled.

Production & Quality cooling efficiencycooling water flowcooling water temperaturewater channel scalingcooling water tank

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Sizing Device Failure of High-Density Polyethylene Extruder

Sizing device failure needs to be solved from three aspects: vacuum system, cooling system, and mold precision.

Molding Process sizing devicevacuum degreesizing sleeve wearcooling watermold concentricity

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Unreasonable Die Head Flow Channel Design of High-Density Polyethylene Extruder

The die head flow channel design needs to ensure uniform melt distribution and no material retention, and the die head should be redesigned when necessary.

Production & Quality die head flow channeluniform flow speedlandflow channel dead corneruniform temperature

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Excessive Ovality of High-Density Polyethylene Pipes

Excessive ovality is caused by uneven cooling or external force deformation, and needs to be solved from cooling uniformity and pipe storage.

Extrusion & Post ovalityuniform coolingsizing sleevehaul-off clampingpipe storage

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Tüm Konular 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382

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