Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

LDPE Film Temperature Gradient Setting

A

The temperature gradient must match material characteristics; process card management can reduce material change fluctuation.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; temperature gradient; material change; plasticizing; process card

Q

LDPE Film Die Head Pressure Monitoring

A

Pressure monitoring is an effective tool for preventive maintenance; trend management saves more cost than after-the-fact handling.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; die head pressure; monitoring; early warning; screen

Q

LDPE Film Dual-lip Air Ring Retrofit

A

Air ring structure upgrade is the hardware solution for stability; the dual-lip air ring significantly improves thickness accuracy in high-speed production.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; dual-lip air ring; cooling; stability; thickness

Q

LDPE Film Surface Roughness

A

Investigate surface roughness from three directions: die, temperature, and raw material; a frosted-glass appearance mostly indicates a melt fracture tendency.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; surface roughness; die; melt fracture; temperature

Q

Poor LDPE Film Transparency

A

Transparency is determined jointly by plasticizing and cooling; adjust the process first and then evaluate material change, to avoid unnecessary cost increases.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; transparency; haze; temperature; cooling

Q

Poor LDPE Film Transverse Tear

A

Transverse-longitudinal balance is the basic goal of film design; blow-up ratio adjustment combined with resin modification can quickly correct the imbalance.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; transverse tear; blow-up ratio; LLDPE; balance

Q

Insufficient LDPE Film Longitudinal Strength

A

Longitudinal strength is built by haul-off orientation; temperature and cooling work together to ensure molecular weight and crystallization quality.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; longitudinal strength; draw ratio; orientation; frost line

Q

Improper LDPE Film Blow-up Ratio

A

The blow-up ratio is the knob for distributing transverse and longitudinal performance; only by tuning it together with the draw ratio can balanced mechanical properties be obtained.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurr...

Processing Machinery LDPE; film; blow-up ratio; transverse strength; orientation; stability

Q

Insufficient Heat Seal Strength of LDPE Film

A

Heat seal performance is jointly determined by material and process window; systematically making heat seal curves can find the optimal parameter zone.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery LDPE; film; heat seal; strength; parameter; window

Q

Performance Decay of LCP After Long-Term Thermal Aging

A

LCP's long-term heat resistance has an upper limit; design life margin according to the aging curve; 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 su...

Processing Machinery thermal aging service life performance decay safety factor

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