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Practical answers to common plastic material challenges

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Q

PSU Steam Sterilization Cycle Management

A

PSU sterilization resistance has a cycle upper limit; switching to PESU is safer for high-cycle situations; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Material Analysis steam sterilization sterilization cycles medical devices aging

Q

PSU Chemical Resistance Boundary

A

PSU chemical resistance has solvent forbidden zones; verify before use in polar solvent situations; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting si...

Processing Machinery chemical resistance polar solvents chlorinated hydrocarbons crazing

Q

PSU Shrinkage and Dimensional Accuracy

A

PSU low shrinkage and low orientation are a blessing for accuracy; fluctuations mostly come from unstable process; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for tro...

Molding Process shrinkage dimensional accuracy low orientation process stability

Q

PSU Must Be Annealed Before Plating

A

Annealing before PSU plating is a hard rule; if stress is not removed, the coating will surely fail; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting s...

Thermoforming plating annealing electroless plating adhesion

Q

PSU Solvent Welding and Bonding

A

PSU has a complete range of joining processes; solvent welding with 5% methylene chloride is a distinctive option; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Molding Process solvent welding ultrasonic welding hot plate welding assembly

Q

Utilization of PSU Shear-insensitive Characteristic

A

PSU is shear insensitive; raising temperature is the right way to reduce viscosity; speed increase yields little benefit; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference ...

Material Analysis shear insensitivity temperature viscosity adjustment low orientation process

Q

PSU Jetting Tendency and Gate Layout

A

PSU naturally tends to jet; gates facing walls or pins is an iron rule of layout; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting similar problems in ...

Molds & Tooling jetting gate layout wall-following snake marks

Q

PSU Large Runner and Gate Design

A

PSU runners and gates are better large than small; pressure loss and freezing both arise from smallness; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooti...

Molds & Tooling runners and gates pressure loss multiple gates freeze-off

Q

PSU Mold Temperature and Molding Window

A

PSU mold temperature 120-160°C is the balance point between stress and flow; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting similar problems in the f...

Molds & Tooling mold temperature hot mold internal stress cycle

Q

PSU Annealing Process for Stress Relief

A

150°C×2-4h annealing is a standard action for PSU stress management and cannot be omitted; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Extrusion & Post annealing 150°C solvent crazing dimensional stability

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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