Problem & Solution

Practical answers to common plastic material challenges

Browse Articles →

Q

PC Silver Streak Multi-Cause Troubleshooting

A

PC silver streaks divide into three routes of moisture, heat and shear, and the distribution position points to the cause; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference ...

Material Drying silver streaksmoisturesheardegradation

Q

PC Extruded Sheet Bubbles

A

The quality baseline of PC sheet extrusion is still drying; gel particle and thickness problems point to raw material purity and die temperature control accuracy; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Drying PC;extrusion;sheet;bubbles;gel particles;die

Q

PC Glass Fiber Reinforced Warpage

A

Glass fiber reinforced PC trades toughness for rigidity; orientation design, surface management and equipment protection are the three supporting tasks; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PC;glass fiber reinforcement;warpage;floating fibers;anisotropy

Q

PC Transparent Part Optical Standards

A

Optical-grade PC is the highest standard of process control; parameter locking plus first-piece optical inspection eliminates fluctuations before mass production; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Drying PC;optical grade;light transmittance;haze;first-piece inspection

Q

PC Transparent Part Haze

A

For PC transparent part haze, check moisture, shear and degradation, with zero tolerance for the process; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooti...

Material Drying hazetransparentsheardegradation

Q

PC Warpage and Deformation

A

For PC warpage, check mold temperature uniformity, with annealing to relieve stress as an aid; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar ...

Molds & Tooling warpagemold temperatureinternal stressannealing

Q

PC Sink Marks and Holding Pressure

A

For PC sink marks, first check the wall thickness and rib thickness, followed by holding pressure feeding; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshoot...

Molds & Tooling sink markholding pressurewall thicknessrib area

Q

PC Short Shot Insufficient Filling

A

PC short shot is due to high viscosity; raise temperature, raise speed, vent and enlarge the gate; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting simi...

Molds & Tooling short shothigh viscosityventinggate

Q

PC Thermal Degradation Yellowing

A

Yellowing is the first signal of PC thermal degradation; dual management of the temperature upper limit and residence time, and shutdown handling specifications must be written into the work instruction; after confirming effectiveness, solidify the parameters and practices into the work instructi...

Processing Machinery PC;thermal degradation;yellowing;residence time;320°C

Q

PC UV Yellowing and Aging

A

PC fears UV; outdoor parts must have stabilizers or coatings; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Extrusion & Post UV yellowingUVagingcoating

Prev 1 ... 814 815 816 817 818 819 820 ... 1164 Next

Categories

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