PL-P
Polariscope for preforms
Technical specifications
Viewing area:
330mm x 150mm
Or 350x350 mm
Dimensions:
400 (L) x 302 (W) x 315 (H) mm
Or
350x350x400mm
Light source:
45watt (LED lamps)
Power supply:
AC 220 V (AC 110 V optional)
Description
The PL-P reveals many defects in PET preforms. Preforms are exposed to polarised light, which highlights internal stress. These optical defects result from how the polymer behaves during injection. Color fringes seen under polarised light at 45° and 90° — known as isochromatic fringes — indicate the level of stress and its causes, and the light also shows the direction of the stress. A defect-analysis catalog is supplied. With its adjustable angle, the PL can be used sitting or standing and holds preforms steadily for comparison; its large size also allows inspection of large preforms, for water-cooler bottles for example.
Options:
Use :
FAQ
What is the primary function of the PL-P polariscope for preforms?
The PL-P detects internal stress defects in PET preforms by exposing them to polarized light, revealing stress patterns caused by polymer reactions during injection molding.
How does the PL-P reveal stress in preforms?
With the preform held at 45° to the polarizing axis, the colored pattern observed, the isochromatic fringe, indicates the amount of birefringence. With the preform held parallel to the polarizing axis, a black isoclinic indicates the direction of the molecular orientational strain.
What viewing area and ergonomics does the PL-P offer?
The PL-P offers a viewing area of 330 x 150 mm (or 350 x 350 mm option), with adjustable angular positioning allowing operators to work seated or standing.
What lighting and power specifications does the PL-P use?
The PL-P uses a 45-watt LED light source running on AC 220 V (AC 110 V optional), with dimensions of 400 x 302 x 315 mm (or larger configuration).
Similar devices:
POLARISCOPES - DETECTORS
APLP - MPLP
LS-1
LSS
