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Problem & Solution

Practical answers to common plastic material challenges

11636 questions
Q
Insufficient flow length ratio in EAA '2079851475616104452
A
Insufficient flow length ratio is caused by the high viscosity of EAA; high temperature, high pressure and large gate are the key
Injection Molding EAA injection flow length ratio melt viscosity injection temperature flow aid
Q
Material sticking to the sizing sleeve of EAA extruded pipe
A
Sizing sleeve sticking is caused by the adhesion characteristics of the elastomer; polishing and lubricating water are the key
Molding Process EAA pipe sizing sleeve sticking polishing lubricating water elastomer adhesion
Q
Rough inner wall of EAA extruded pipe
Q
Longitudinal streaks in EAA extruded film
A
Q
EAA film blocking, difficult to separate layers
Q
Bending deformation of EAA extruded profiles
A
Profile bending is caused by uneven cooling and uneven flow velocity; homogenization and alignment are the keys to solving it
Extrusion & Post EAA extrusion bending deformation uniform cooling uniform flow velocity sizing sleeve
Q
Severe flash in EAA '2079851475616104452
A
Flash is caused by high-pressure injection and mold gaps; reducing pressure and improving mold fitting are the key
Injection Molding EAA injection flash clamping force parting line injection pressure
Q
Poor thickness uniformity of EAA extruded film
A
Film thickness uniformity requires coordinated optimization from three aspects: die design, gap adjustment and cooling
Extrusion & Post EAA film thickness uniformity die design extrusion swell air ring cooling
Q
Excessive thermal shrinkage of EAA film
A
Film thermal shrinkage is caused by orientation freezing; reducing the draw ratio and annealing treatment are the key
Extrusion & Post EAA film thermal shrinkage orientation release annealing treatment biaxial stretching
Q
Unstable dimensions in EAA extrusion
A
Extrusion dimensional stability depends on feeding accuracy, temperature control and haul-off synchronization
Extrusion & Post EAA extrusion dimensional stability feeding control temperature PID haul-off synchronization
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