Problem & Solution

Practical answers to common plastic material challenges

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Q

PP Warpage Internal Stress

A

Cooling and wall thickness are the basis of PP warpage; mold temperature and holding pressure are equally important; structural optimization prevents deformation.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP;warpage;internal stress;cooling;wall thickness;mold temperature

Q

PP Sink Mark in Thick Walls

A

Holding pressure and structure are equally important for PP sink marks; rib design is prevention; gate position affects feeding.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP;sink mark;thick wall;holding pressure;rib;gate

Q

PP Weld Line Strength

A

Mold temperature and gate are the main countermeasures for PP weld lines; testing ensures structural safety; management ensures appearance.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP;weld line;strength;mold temperature;gate;test

Q

PP Burnt Mark at the End

A

Speed and venting are the adjustment directions for PP burnt; the end is the key area; monitoring prevents recurrence.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP;burnt mark;end;trapped air;speed;venting

Q

PP Silver Streak Drying Misjudgment

A

Post-drying equipment troubleshooting of PP silver streaks is deep diagnosis; nozzle and back pressure are common omissions; systematic adjustment.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying PP;silver streak;drying misjudgment;nozzle;back pressure;screw

Q

PP Geotechnical Material Application

A

PP geotechnical materials are aging-resistant, commonly used in civil engineering; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the f...

Processing Machinery geotechnicalgeotextilegridaging resistance

Q

PP Agricultural Application

A

PP agricultural weather-resistant modification, low cost and corrosion resistance; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the f...

Processing Machinery agricultureweather resistancefilmirrigation

Q

PP Transparent Application

A

PP transparency relies on random copolymer plus nucleation, switch to PC for high transparency; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar prob...

Processing Machinery transparencyrandom copolymernucleating agenthaze

Q

PP Heat Resistance Grade

A

PP long-term 100°C, short-term 150°C, switch to high-temperature material for over-temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar prob...

Processing Machinery heat resistancelong-term use150°Cmaterial selection

Q

PP Printing and Coating

A

PP printing and coating must first activate the surface, only then can adhesion come up; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in...

Extrusion & Post printingcoatingcoronapretreatment

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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