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Sorun ve Çözüm

Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
11636 soru
Q
EVOH extruded film thick edges and thin middle
A
U-shaped thickness is caused by die flow channel and swell differences; coat-hanger die and gap fine-tuning are key
Molding Process EVOH film thickness distribution coat-hanger die gap fine-tuning edge effect
16 görüntüleme
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Q
EVOH extrusion surface is rough
A
Surface roughness is caused by low-temperature extrusion and die defects; increasing temperature and polishing the die are core countermeasures
Extrusion & Post EVOH extrusion surface roughness die polishing extrusion temperature melt elasticity
15 görüntüleme
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Q
EVOH extruder screw wear is severe
A
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
Extrusion & Post EVOH extrusion screw wear nitrided screw filler friction bimetallic screw
15 görüntüleme
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Q
EVOH injection product has oil spots
A
Oil spots are caused by external sources of release agent and lubricant; reducing release agent and sealing mold lubrication are key
Injection Molding EVOH injection oil spots release agent lubricant precipitation mold sealing
15 görüntüleme
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Q
EVOH film printing adhesion is poor
A
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and special ink are key
Extrusion & Post EVOH film printing adhesion corona treatment special ink surface tension
15 görüntüleme
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Q
EVOH and color masterbatch mixing with uneven color
A
Color masterbatch carrier matching and sufficient dispersion are the key to color uniformity
Injection Molding EVOH coloring color masterbatch carrier compatibility pigment dispersion color streaks
15 görüntüleme
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Q
EVOH injection weld line strength is low
A
Low weld line strength is caused by insufficient molecular entanglement; high-temperature high-speed injection and overflow wells are effective countermeasures
Injection Molding EVOH injection weld line insufficient entanglement injection temperature overflow well
15 görüntüleme
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Q
EVOH injection flow length ratio is insufficient
A
Insufficient flow length ratio is caused by EVOH's high viscosity; high temperature, high pressure, and large gates are key
Injection Molding EVOH injection flow length ratio melt viscosity injection temperature flow aid
15 görüntüleme
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Q
EVOH extruded film longitudinal stripes
A
Longitudinal stripes are caused by die defects and pressure fluctuations; die maintenance and pressure stabilization are key
Extrusion & Post EVOH film longitudinal stripes die gap melt pressure lip flatness
15 görüntüleme
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Q
EVOH extruded profile bending deformation
A
Profile bending is caused by uneven cooling and uneven flow velocity; uniformization and alignment are the key to solution
Extrusion & Post EVOH extrusion bending deformation uniform cooling uniform flow velocity sizing sleeve
15 görüntüleme
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Kategoriler

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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