Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

PEEK Extrusion Temperature and Residence Management

A

PEEK extrusion at 400-450℃ with a 30-minute residence upper limit; dead corners are the culprit; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post extrusionresidence timedead cornerdegradation

Q

Stress Annealing of PEEK After Machining

A

The dimensional stability of PEEK precision parts is backed up by stress-relief annealing below 250℃; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post stress annealing machining dimensional stability cracking

Q

The Trade-Off of 300℃ High-Temperature Annealing of PEEK

A

300℃ annealing is a performance-limit means, and the embrittlement and oxidation costs must be evaluated in advance; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post high-temperature annealing embrittlement large-part cracking performance limit

Q

Deformation of PEEK After Annealing

A

PEEK annealing is a double-edged sword — only standardized process can maximize benefits and avoid harm; annealing with fixtured shape-setting balances stress release and shape retention; any annealing specification must pass first-article verification.

Extrusion & Post PEEK；annealing；deformation；stress release；fixturing；dimensions

Q

Spiral Marks in PEEK Extrusion

A

PEEK rod spiral marks originate from the melt's rotational flow not being stabilized; a breaker plate and an extended land are the standard solutions; the influence of screw cleanliness on flow stability cannot be ignored.

Extrusion & Post PEEK；spiral mark；extrusion；breaker plate；die；rod

Q

Orange Peel Surface in PEEK Extrusion

A

PEEK orange peel treatment revolves around the three elements of melt state, die state, and cooling method; multi-stage slow cooling is more favorable to surface quality than quenching; die polishing is basic work that is often overlooked.

Extrusion & Post PEEK；orange peel；extrusion；die；cooling；gloss

Q

Rough Surface and Unmelted Particles in PEEK Extrusion

A

For poor plasticization in PEEK extrusion, first check the temperature system; unmelted particles are direct evidence of insufficient temperature; the die flow channel design must match the flow characteristics of high-viscosity melt.

Extrusion & Post PEEK；extrusion；unmelted particle；plasticization；rough surface；die

Q

Delamination and Peeling of PE Injection Molded Products

A

PE delamination = a 'contamination and compatibility' problem: first check mixed material and regrind, then control release agent and shear; for delaminated parts, don't forcibly adjust the process — find the contamination source first.

Extrusion & Post PE；delamination；contamination；compatibility；release agent

Q

Mold Sticking of PE Injection Molded Products (Soft Material)

A

Soft PE demolding = the four-piece set of 'draft angle + polishing + ejection area + cooling': the softer the material, the more 'gentle' demolding must be; any concentrated force will leave permanent deformation.

Extrusion & Post PE；LDPE；mold sticking；draft angle；ejection

Q

Rapid Screen Pack Blockage in PE Extrusion

A

If the PE screen pack blocks quickly, first distinguish 'impurities' from 'gel': impurities rely on material source management, gel relies on shutdown and dead-spot management; the screen pack is a consumable and, more importantly, a diagnostic window.

Extrusion & Post PE；extrusion；screen pack；blockage；gel；impurity

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