Problem & Solution

Practical answers to common plastic material challenges

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Q

PEI RF Device Dimensional Drift

A

PEI RF applications push dimensional stability requirements to the limit; process consistency is the foundation of signal quality; correlated monitoring discovers hidden drift.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Production & Quality PEI;RF;dimension;precision;stability;signal

Q

PEI Medical Sterilization Discoloration

A

The thousand-cycle-level sterilization tolerance of PEI medical parts is an advantage; method differences must be verified separately; cycle records support life management.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Production & Quality PEI;medical;sterilization;color;cycle;verification

Q

PEI Chlorinated Solvent Corrosion

A

The chlorinated solvent taboo of PEI chemical resistance is a clear knowledge point; solvent management in medical scenarios is a quality link; compatibility verification cannot be omitted.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recu...

Production & Quality PEI;chlorinated solvent;corrosion;stress cracking;medical;compatibility

Q

PEEK and Other High-Temperature Material Selection

A

PEEK selection guards against excess performance; PPS and PEKK each have their substitution ranges; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Production & Quality material selectionPEKKPIPPS

Q

Regrind Proportion of PEEK Exceeding the Limit

A

PEEK regrind limits of 30% for virgin and 10% for filled are the official red line — exceeding them plants hidden dangers; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Production & Quality regrind proportion upper limit heat history filled grade

Q

Stress Cracking of PEEK

A

Although PEEK has excellent chemical resistance, the superposition of stress and media can still cause cracking; annealing is a reliable post-treatment for eliminating internal stress; eliminating stress concentration through structural design is the fundamental measure.

Production & Quality PEEK；stress cracking；residual stress；insert；annealing；medium

Q

Sink Marks on PEEK Orthopedic Implants

A

Sink mark treatment for PEEK medical parts requires simulation-driven holding curve design; staged mold temperature control is an effective means for precision medical parts; once the process is fixed, it must be strictly controlled.

Production & Quality PEEK；implant；sink mark；holding curve；medical；simulation

Q

Rapid Decay of Corona Treatment on PE Film

A

PE corona is extremely 'time-sensitive': printing right after treatment is an iron rule, and slip agent exudation is an invisible killer; the dyne value should be managed as a dynamic indicator that decays over time.

Production & Quality PE；film；corona；dyne value；slip agent；aging

Q

HDPE Large-Diameter Pipe Sag

A

HDPE large-diameter pipe sag is a system problem of 'material + cooling + process': low-Sag bimodal material is fundamental, strong cooling is the key, and die pre-offset is only a compensation means; if the wrong grade is selected, no adjustment afterwards can meet the standard.

Production & Quality HDPE;pipe;sag;Sag;bimodal material;wall thickness

Q

PC Internal Stress Polariscope Detection

A

Polariscope detection is a quantitative tool for PC stress management; only by turning invisible internal stress into a measurable indicator can preventive control be achieved; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Production & Quality PC;internal stress;polariscope;birefringence;stress detection

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