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Practical answers to common plastic material challenges

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Q

PCABS plating grade process

A

PC/ABS plating part process serves the surface, stress and silver streaks are cleared to zero first; 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...

Extrusion & Post plating gradesurfaceinternal stresssilver streak

Q

PC/ABS material change cleaning

A

Material change cleaning is the key to delamination prevention.; 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

Extrusion & Post PC/ABS；material change；cleaning；contamination；delamination；process

Q

PC/ABS paint adhesion

A

Coating quality starts from surface cleanliness.; 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

Extrusion & Post PC/ABS；spray painting；adhesion；cleaning；mold release agent；paint system

Q

PC/ABS delamination (contamination type)

A

Contamination-type delamination is prevented by material management; cleaning and classification are the institutional guarantee.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a trouble...

Extrusion & Post PC/ABS；delamination；contamination；regrind；material change；cleaning

Q

PC/ABS delamination (melt temperature too low)

A

For PC/ABS delamination, first raise the temperature to verify; if raising temperature is ineffective, then check material contamination.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PC/ABS；delamination；melt temperature；contamination；fusion；cleaning

Q

PC Silver Streaks Reappearing After Post-Processing

A

Reduce internal stress first, then machine.

Extrusion & Post PC; machining; crack; annealing; internal stress

Q

PC Product Flaking (Delamination)

A

PC delamination is checked from both ends of 'shear and contamination': gate shear is the process inducement, contamination is the material inducement; delamination is an interface problem, find the root cause first before talking about the process.

Extrusion & Post PC; delamination; shear; contamination; orientation

Q

PC and ABS Material Change Cross-Contamination

A

PC/ABS material change 'cross-contamination' is prevented by SOP: gradient temperature cleaning + disassembling and cleaning dead corners are standard actions; frequent cross material changes are the enemy of quality, use a dedicated line if possible.

Extrusion & Post PC; material change; cross-contamination; purging; SOP

Q

PC Product Melt Fracture Marks

A

PC melt fracture marks = 'shear exceeding the limit': for extrusion lower temperature of the melt and raise die temperature, for '2079851475616104452 reduce speed and enlarge the gate; PC has high viscosity and high shear sensitivity, and speed management must leave margin.

Extrusion & Post PC; melt fracture; shear; die; gate

Q

PC Extruded Sheet Uneven Thickness

A

PC sheet thickness relies on the three-in-one stability of 'die lip + temperature control + haul-off': optical sheets need thickness closed-loop; use the thickness curve to locate the problematic die lip section for transverse deviation and adjust it targetedly.

Extrusion & Post PC; extruded sheet; uneven thickness; die lip; haul-off

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