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Problem & Solution

Practical answers to common plastic material challenges

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11636 questions
Q
POE extrusion die material buildup carbon deposit
A
Die carbon deposit is caused by thermal oxidation and untimely cleaning; PE flushing and timely cleaning are key
Extrusion & Post POE extrusiondie carbon depositPE flushingresidence zonethermal oxidation
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Q
POE blended with incompatible resins, delamination
A
Blends with large polarity differences require reactive compatibilizers to form chemical bonding at the interface to solve it
Extrusion & Post POE blend delaminationpolarity differencePOE-g-MAHreactive compatibilizationinterfacial bonding
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Q
POE extrusion pelletizing strand sticking
A
Strand sticking is caused by elastic recovery and low-temperature pelletizing; high-temperature water cutting and fast cutting are the key
Extrusion & Post POE pelletizingstrand stickingpelletizing water temperaturecutter speedelastic recovery
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Q
Severe parison sag in POE extrusion '2079851475616104457
A
Parison sag is caused by low melt strength; slight crosslinking and wall thickness control are the key
Blow Molding POE '2079851475616104457parison sagmelt strengthslight crosslinkingwall thickness control
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Q
POE products yellowing after processing
A
Yellowing is caused by thermal/photo oxidation and metal catalysis; improving the antioxidant system and UV absorber is the key
Production & Quality POE yellowingthermo-oxidationantioxidantUV absorbermetal catalysis
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Q
Long-term storage dimensional change of POE products
A
Dimensional change is caused by physical aging; annealing treatment and slight crosslinking are measures to stabilize dimensions
Material Analysis POE dimensional stabilityphysical agingannealingsecondary crystallizationslight crosslinking
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Q
Poor interfacial bonding between POE and filler
A
The elastomer-filler interface requires the dual action of coupling agent and compatibilizer, otherwise the filler has a negative effect
Material Analysis POE fillerinterfacial bondingcoupling agentcompatibilizerfiller dispersion
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Q
POE extrusion melt fracture
Q
POE '2079851475616104452 thick-wall bubbles
A
Thick-wall bubbles are caused by a combination of insufficient holding pressure, moisture and poor venting
Material Drying POE injectionbubblesholding pressurethick-wall productsmold venting
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Q
POE '2079851475616104452 demolding difficulty
A
Demolding difficulty is caused by adhesion and insufficient mold design; increasing the draft angle is the fundamental measure
Injection Molding POE injectiondemolding difficultydraft angleadhesionejection design
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All Topics 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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