Problem & Solution

Practical answers to common plastic material challenges

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Q

LLDPE film insufficient pendulum impact resistance

A

Impact = uniformity + grade.

Material Analysis LLDPE; film; impact; gel; grade

Q

LLDPE film gel particles - pigment agglomeration

A

Pigment spots = dispersion and compatibility.

Material Analysis LLDPE; film; color masterbatch; agglomeration; dispersion

Q

LDPE Processing Temperature Upper Limit

A

LDPE's temperature upper limit also exists; the 280℃ red line plus residence management prevents oxidative degradation; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis LDPE; temperature upper limit; 280℃; thermal oxidation; degradation

Q

LDPE Film Aging Yellowing

A

Yellowing = oxidative aging; manage storage well.

Material Analysis LDPE; film; yellowing; aging; storage

Q

Utilization of LCP Orientation-Direction Mechanical Property Differences

A

LCP performance data must carry direction; design verification uses the conservative transverse value; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for ...

Material Analysis orientation mechanical properties directionality test sampling

Q

Poor Dispersion in In-situ Reinforced Blending of LCP with General-Purpose Resins

A

LCP blending reinforcement relies on the temperature window and shear fibrillation; content and process must be linked; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis blending in-situ reinforcement microfibrillation dispersion

Q

LCP Weld Line Strength Extremely Low

A

Weld line is the Achilles' heel of LCP; gate position is more critical for LCP than for any other engineering plastic, and design avoidance is far better than process remedy.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis LCP;weld line;strength;gate;molecular orientation;confluence

Q

HDPE Stress Cracking ESCR

A

ESCR is the core indicator for HDPE applications; grade selection determines crack resistance life more than process adjustment; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis HDPE;ESCR;stress cracking;detergent;grade

Q

HDPE chemical resistance

A

HDPE chemical resistance is a selective advantage; strong oxidants and hydrocarbons are the two boundaries; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis HDPE; chemical resistance; strong oxidant; hydrocarbon; ESCR

Q

HDPE food contact

A

HDPE is the main material for food packaging; grade compliance plus migration verification is the application prerequisite; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis HDPE; food contact; FDA; migration; compliance

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