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Q

Filament breakage in PP nonwoven spinning

A

Spinning stability relies on the triple guarantee of temperature, pack, and cooling; filament breakage rate monitoring is the core indicator of the production line.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; nonwoven; spinning; filament breakage; spunbond; cooling air

Q

Rough inner wall of PP pipe extrusion

A

Inner wall quality depends on the mandrel temperature and die condition; temperature control and cleanliness are the two major management points.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; pipe; rough inner wall; mandrel; die; temperature

Q

Frequent filament breakage of PP flat filaments

A

Filament breakage is the main efficiency loss of the drawing line; systematically investigate from the four aspects of cleanliness, draw, temperature, and die head.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; flat filament; filament breakage; draw; filtration; die head

Q

Insufficient strength of PP woven bag flat filaments

A

Flat filament strength is built by drawing orientation; drawing process parameters are the core variables of drawing quality.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; flat filament; drawing; draw; strength; woven bag

Q

Poor roll formation of BOPP film

A

Film roll quality is the concentrated embodiment of various deviations of the production line; tension management and thickness control need to be improved simultaneously.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; BOPP; winding; film roll; tension; storage

Q

Temperature-sensitive fluctuation of BOPP film

A

Temperature stability is the foundation of BOPP quality consistency; the return on investment in precision temperature control is directly reflected in the qualification rate.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; BOPP; temperature; fluctuation; temperature control; consistency

Q

Poor adhesion of BOPP film

A

Adhesion problems are solved from both surface treatment and cleanliness; dyne value testing is the quantitative basis for release.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; BOPP; adhesion; corona; dyne value; printing

Q

Optical defects of BOPP film

A

Optical defects are traced to the raw material and filtration links; high-transparency film must use high-cleanliness raw materials with high-precision filtration.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; BOPP; optical defects; gel particles; resin; filtration

Q

Edge defects of BOPP film

A

Edge cutting quality depends on the condition of the slitting equipment; tool management and parameter standardization are the guarantee of edge quality.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; BOPP; edge; slitting; burr; cutting tool

Q

Wrinkles in BOPP film

A

The direct cause of wrinkles is tension imbalance; closed-loop tension control plus thickness uniformity management can significantly reduce the wrinkle occurrence rate.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PP; BOPP; wrinkles; tension; alignment; speed

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