Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

LLDPE melt temperature range

A

LLDPE melt upper limit 260℃; blown film prefers medium-low 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 reference for troubleshooting similar problems in the future.

Extrusion & Post LLDPE melt temperature gel yellowing

Q

LLDPE extrusion temperature 195-215℃

A

LLDPE film temperature is the golden combination of 195/215; equipment state calibration is more important than blindly adjusting temperature; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; extrusion temperature; 195℃; 215℃; gel

Q

LLDPE film auxiliary equipment matching

A

Film quality is the result of whole-line coordination; auxiliary equipment management must be valued equally with the main machine.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; auxiliary equipment; inspection; maintenance; coordination

Q

LLDPE film stretch wrap film

A

Stretch wrap film is a high-value-added application of LLDPE; a dedicated formulation is the performance foundation.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; stretch wrap film; stretching; tackifier; formulation

Q

LLDPE film shrink packaging application

A

Shrink film is a dedicated product of formulation-process synergy; shrink curve testing is a development verification means.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; shrink; orientation; grade; curve

Q

LLDPE film pinholes

A

Pinholes are a quality red line for high-stretch film; source cleanliness and filtration are key.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; pinhole; gel; filtration; stretching

Q

LLDPE film PPA onset time

A

PPA onset requires a coating formation process; only standardized use can give the best effect.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; PPA; onset time; coating; dispersion

Q

LLDPE film winding hardness

A

Winding parameters should be adjusted with material characteristics; directly continuing LDPE parameters easily causes problems.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; winding; tension; taper; hardness

Q

LLDPE film slip agent migration

A

Slip agent management is a time-dependent subject; standardization of dosage and testing timing is critical.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; slip agent; migration; friction coefficient; heat sealing

Q

LLDPE film multilayer coextrusion interface

A

Coextrusion interface stability relies on viscosity matching; the feedblock and process need coordinated optimization.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post LLDPE; film; coextrusion; interface; viscosity; layer ratio

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