Problem & Solution

Practical answers to common plastic material challenges

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Q

Sharkskin on LCP Extruded Profile Surface

A

Sharkskin is a signal of shear exceeding the critical value; lowering temperature and raising speed is not as good as matching speed increase with temperature decrease; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include t...

Extrusion & Post extrusion sharkskin melt fracture die

Q

LCP Blown Film Process and Bubble Stability

A

LCP blown film focuses on temperature control and biaxial orientation balance; bubble stability comes from uniform cooling; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post blown film melt strength bubble stability biaxial stretching

Q

Large Disparity Between Longitudinal and Transverse Strength of LCP Extruded Cast Film

A

For LCP film, choose blown film if isotropy is wanted; cast film's unidirectional orientation is inherently weak transversely; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubl...

Extrusion & Post cast film blown film isotropy orientation

Q

LCP Product Surface Decoration

A

LCP surface decoration requires dedicated treatment; chemical resistance makes adhesion more difficult.; 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 troubleshootin...

Extrusion & Post LCP;surface;printing;coating;adhesion;treatment

Q

LCP Product Delamination and Peeling

A

LCP delamination is related to flow front behavior; steady filling is the key to prevention.; 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 p...

Extrusion & Post LCP;delamination;peeling;flow front;filling;temperature

Q

HDPE Opening Property

A

Film opening relies on anti-blocking agent and tension management; 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 HDPEopening propertyblockinganti-blocking agent

Q

HDPE Film Bubble Instability

A

Film bubble stability relies on melt strength and uniform airflow; 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 HDPEfilm bubblemelt strengthair ring

Q

HDPE Die Buildup

A

Die buildup is controlled by cleaning and PPA; 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 HDPEdie buildupprecipitationPPA

Q

HDPE Processing Aid PPA

A

PPA is the key additive for HDPE to achieve both high speed and high quality; dosage strategy and onset time management are application essentials; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post HDPE;PPA;fluoroelastomer;wall slip;dosage

Q

HDPE Melt Fracture

A

Melt fracture is treated by reducing speed, increasing temperature, and adding PPA; 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...

Extrusion & Post HDPEmelt fracturesharkskinPPA

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