Dr. Schenk GmbH

Stretched Film Inspection

Stretched film inspection; LISIM; image source: courtesy of Brückner Group GmbH
Stretched film inspection; LISIM; image source: courtesy of Brückner Group GmbH

EasyInspect for stretched film inspection detects local defects that occur during the production of the film base material or in subsequent processing steps, e.g. stretching or coating. It offers reliable and repeatable detection of smallest defects and helps manufacturers to produce highest quality materials by inspecting after each value-adding process step, e.g. after chill roll or after MDO coating, depending on the stretched film's final use.

EasyInspect for stretched film inspection is used for local defect detection, e.g. for:  

  • Scratch defect detection
  • Black spots defect detection
  • Gel defect detection
  • Die-line defect detection
  • Fish-eye defect detection

EasyInspect can be equipped with EasyMeasure, which is is ideal for monitoring large area material properties, such as thickness variations, haze, or the quality of MDO coating. Monitoring is easy to perform and adds extra control over the high-quality film production process.

Dr. Schenk's multi-directional darkfield illumination allows independent control of two separate illuminations whcih work together to detected even the smallest defects.

The application of Dr. Schenk's transmission and reflection optics ensures that critical microscratches are caught early in the production process.

The benefit is that the production processes can be adjusted at the earliest possible time. This saves time and money by not processing defective material any further and by avoiding these defects in future production. EasyInspect is the ideal inspection solution for high-quality films and foils, such as:

  • BO PA
  • BOPP

EasyInspect & EasyMeasure for stretched film inspection use Dr. Schenk’s unique MIDA Technology to inspect stretched films with multiple optical channels on a single scan line. One defect generates multiple images to deliver the most comprehensive material analysis and defect classification on the market.


Scratch defect
Die-line/fish- eye defect
Gel defect
Uncoated area
Thickness monitoring

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