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Yaygın plastik malzeme zorluklarına pratik yanıtlar

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11636 soru
Q
Low weld line strength in EVA '2079851475616104452
A
Low weld line strength is caused by insufficient molecular entanglement; high temperature high speed injection and overflow well are effective countermeasures
Injection Molding EVA injection weld line insufficient entanglement injection temperature overflow well
15 görüntüleme
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Q
Insufficient flow length ratio in EVA '2079851475616104452
A
Insufficient flow length ratio is caused by EVA high viscosity; high temperature, high pressure and large gate are key
Injection Molding EVA injection flow length ratio melt viscosity injection temperature flow aid
15 görüntüleme
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Q
Material sticking to sizing sleeve of EVA extruded pipe
A
Sizing sleeve sticking is caused by elastomer adhesion characteristics; polishing and lubricating water are key
Molding Process EVA pipe sizing sleeve sticking polishing lubricating water elastomer adhesion
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Q
Rough inner wall of EVA extruded pipe
A
Pipe inner wall roughness is caused by mandrel condition and insufficient cooling; polishing mandrel and internal cooling are key
Extrusion & Post EVA pipe inner wall roughness mandrel polishing internal cooling melt elasticity
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Q
Longitudinal stripes on EVA extruded film
A
Longitudinal stripes are caused by die defects and pressure fluctuation; die maintenance and pressure stabilization are key
Extrusion & Post EVA film longitudinal stripes die gap melt pressure lip flatness
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Q
EVA film blocking with difficult separation
Q
Bending deformation of EVA extruded profiles
A
Profile bending is caused by uneven cooling and uneven flow velocity; homogenization and alignment are the key to solution
Extrusion & Post EVA extrusion bending deformation uniform cooling uniform flow velocity sizing sleeve
15 görüntüleme
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Q
Severe flash in EVA '2079851475616104452
A
Flash is caused by high pressure injection and mold gap; reducing pressure and improving mold fitting are key
Injection Molding EVA injection flash clamping force parting line injection pressure
15 görüntüleme
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Q
Poor thickness uniformity of EVA extruded film
A
Film thickness uniformity requires coordinated optimization of die design, gap adjustment and cooling
Extrusion & Post EVA film thickness uniformity die design extrusion swell air ring cooling
15 görüntüleme
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Q
Excessive thermal shrinkage of EVA film
A
Film thermal shrinkage is caused by orientation freezing; reducing draw ratio and annealing treatment are key
Extrusion & Post EVA film thermal shrinkage orientation release annealing treatment biaxial stretching
15 görüntüleme
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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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