Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

Explorar artículos →

Q

PET preform inventory aging and hardening

A

Preforms have a shelf life concept, and aged preforms require process compensation; inventory management and batch traceability are the basic guarantees for stable bottle blowing quality.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent r...

Extrusion & Post PET；preform；aging；inventory；IV；shelf life

Q

PET mold temperature too low causing condensation

A

Condensation foggy spots are a typical manifestation of imbalance between mold temperature and environmental humidity; mold temperature is not the lower the better—it must be above the dew point to ensure surface replication quality.; after confirming effectiveness, solidify the parameters and pr...

Material Drying PET；bottle blowing；condensation；mold temperature；dew point；foggy spots

Q

PET stretch rod speed mismatch

A

Stretch rod speed is the main control parameter for bottom material distribution; a segmented speed curve combined with blowing timing can precisely adjust the bottle bottom thickness and uniformity.; after confirming effectiveness, solidify the parameters and practices into the work instruction ...

Extrusion & Post PET；bottle blowing；stretch rod；speed；bottle bottom；thickness

Q

Improper PET pre-blow pressure and timing

A

Pre-blow is the core means of controlling wall thickness distribution and whitening; pressure and timing need to be adjusted in coordination, and changing a single item often trades one thing for another.; after confirming effectiveness, solidify the parameters and practices into the work instruc...

Blow Molding PET；bottle blowing；pre-blow；pressure；timing；wall thickness

Q

Abnormal PET polarized light stress lines

A

Polarized light inspection can see through the orientation and stress distribution of the bottle body; after establishing the baseline pattern of qualified products, abnormal stress lines can serve as a directional guide for process adjustment.; after confirming effectiveness, solidify the parame...

Extrusion & Post PET；bottle；polarized light；stress lines；orientation；inspection

Q

PET bottle crystallization spots from uneven cooling

A

Crystallization spots at fixed positions point to uneven mold cooling; thermal imaging is an efficient locating tool, and the patches usually disappear immediately after water channel modification.; after confirming effectiveness, solidify the parameters and practices into the work instruction to...

Molds & Tooling PET；bottle；crystallization spots；cooling；thermal imaging；water channels

Q

PET mold surface roughness causing white haze

A

The mold surface condition is directly replicated onto the bottle surface; optical-grade products require mirror polishing, and regular mold maintenance is the basic work for maintaining high transparency.; after confirming effectiveness, solidify the parameters and practices into the work instru...

Molds & Tooling PET；bottle；white haze；mold；polishing；surface

Q

PET regrind contamination introducing impurities

A

Regrind management is an important variable for preform quality; source control, ratio limits, and re-drying are all indispensable, and food-grade applications require even more compliance evaluation.; after confirming effectiveness, solidify the parameters and practices into the work instruction...

Material Analysis PET；regrind；contamination；impurities；IV；management

Q

PET raw material inlet temperature too low

A

Too low an inlet temperature indirectly pushes up AA through shear heat; the temperature setting must take into account both plasticizing efficiency and thermal degradation, and the actually measured melt temperature is the judgment basis.; after confirming effectiveness, solidify the parameters ...

Processing Machinery PET；inlet temperature；shear heat；AA；plasticizing

Q

Uneven PET hot runner temperature

A

Hot runner temperature uniformity determines multi-cavity consistency; tracking quality data by cavity can quickly locate the problem gate and is the standard management method for preform production.; after confirming effectiveness, solidify the parameters and practices into the work instruction...

Molds & Tooling PET；hot runner；uneven temperature；multi-cavity；consistency

Anterior 1 ... 779 780 781 782 783 784 785 ... 1164 Siguiente

Categorías

Todos los temas 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382