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Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
1439 soru
Q
Plastic cracking around metal inserts is a common problem
A
Insert molding requires preheating and increasing surrounding wall thickness
Material Drying insertshrinkage differencepreheatingwall thicknessPA
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Q
Product dimensions out of tolerance range
A
Dimension out of tolerance requires stable process conditions and moisture control
Material Drying dimension out of toleranceshrinkagemoistureprocess stability
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Q
Product shows silver streaks, bubbles or decreased mechanical properties
A
Drying requires strict control of conditions according to material characteristics
Material Drying dryingmoisture contentdew pointcellulose acetate butyrate
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Q
Extremely narrow temperature window in CAB processing
A
CAB requires precise temperature control and drying within a narrow processing window
Material Drying CABprocessing windowthermal stabilityprecise temperature control
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Q
Silvery white streaks appear on the product surface along the melt flow direction
Q
Severe moisture absorption of PVA raw material before extrusion
A
PVA is strongly polar and hydrophilic and must be fully dried before processing
Material Drying PVA moisture absorptionvacuum dryingsealed packagingmoisture controlpolar hydrophilicity
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Q
PVA hydrolysis aging
A
Hydrolysis aging is caused by polar groups being water-sensitive; selecting a low-polarity grade is the key
Material Drying PVAhydrolysis agingpolar groupanti-hydrolysis stabilizerwaterproof coating
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Q
Silver streaks caused by moisture during PVA processing
A
Silver streaks are caused by moisture vaporization and stretching; drying and venting are the main countermeasures
Material Drying PVA injectionsilver streakmoisture dryingventingback pressure
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Q
Bubbles in thick-walled PVA '2079851475616104452
A
Thick-wall bubbles are caused by a combination of insufficient holding pressure, moisture and poor venting
Material Drying PVA injection bubbles holding pressure thick-walled products mold venting
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Q
Internal voids of PU
A
Internal voids are caused by insufficient holding and gas entrapment; high-pressure holding and venting are key
Material Drying PU internal voids holding pressure mold venting raw '2079851475616104451
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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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