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Problem & Solution
Practical answers to common plastic material challenges
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2025
questions
Q
PVC Cooling and Calibration
A
Profile deformation controlled by calibration cooling uniformity; 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 later
Processing Machinery
PVC
calibration
profile
bending
Q
PVC Material Change Cleaning
A
PVC material change cleaning must be thorough and corrosion checked; 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 later
Processing Machinery
PVC
material change
cleaning
corrosion
Q
PVC Thermocouple Calibration
A
PVC temperature control metering managed at ±2℃ precision; 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 later
Processing Machinery
PVC
thermocouple
calibration
precision
Q
PVC Melt Actual Measurement
A
PVC must be based on actual measured melt 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 problems later
Processing Machinery
PVC
melt actual measurement
calibration
deviation
Q
PVC Startup Procedure
A
PVC startup first discharges residual material, first piece must be inspected; 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 later
Processing Machinery
PVC
startup
cleaning
first piece
Q
PVC Nozzle Temperature
A
PVC nozzle should be straight-through large bore plus temperature lower limit; 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 later
Processing Machinery
PVC
nozzle
yellow spot
straight-through
Q
PVC Barrel Temperature Zoning
A
PVC temperature gradient must be gentle, strictly prevent front zone overheating; 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 later
Processing Machinery
PVC
barrel temperature
gradient
plasticization
Q
PVC Screw Temperature
A
Screw condition is part of PVC residence control; 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 later
Processing Machinery
PVC
screw
wear
residence
Q
PVC De-HCl Autocatalysis
A
PVC degradation is an autocatalytic process, must be handled at first time; 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 later
Processing Machinery
PVC
de-HCl
autocatalysis
degradation
Q
PVC Narrow Processing Window
A
PVC adjustment must be small steps and fast pace, temperature window only 35℃; 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 later
Processing Machinery
PVC
processing window
temperature control
precision
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