CAM-Film-T: Product Info | Specifications
Test Dyne Level of Corona-Treated Films without Dyne Solutions
Tantec CAM-FILM Contact Angle Meter for Film Converters
Wetting tension of corona treated films belongs to a group of physical parameters for which no 
standards exist. All we know is what is measured. In such cases, the
precision of the test method is of utmost importance.
Until now converters have exclusively used dyne testing liquids or pens to test the level of surface treatment of flexible films. That method is characterized by low accuracy and inconsistent results. In recent round-robin testing sponsored by the Flexible Packaging Association technical committee, measurements of identical material taken by different labs using dyne liquids varied as much as 15 dyne/cm. It is a serious problem when one of the most important parameters of the film can not be reliably measured.
Contact Angle Meter for Films
The new improved Model CAM-FILM-T contact angle meter provides an excellent alternative to dyne liquids. It utilizes a more analytical and repeatable water contact angle method of measuring wetting tension. The CAM-FILM is an inexpensive and simple instrument for use on production lines or in a QA lab.
Contact angle helps determine dyne level
The contact angle of a liquid on a smooth homogeneous surface depends on a specific property of the
surface: wetting tension measured in dyne/cm. The higher the wetting tension of the film, the
better its wettability and the smaller the contact angle. The CAM-FILM generates unambiguous and
repeatable data which can be easily translated into dyne/cm.
CAM-FILM Offers:
· High repeatability and accuracy
· Easy correlation with dynes/cm
· Generates data for SPC
· Eliminates judgement calls
· Eliminates use of toxic dyne liquids
Product description
Model CAM-FILM is a bench-top optical device incorporating a special light source and a projection
screen with a protractor. A special film specimen holder holds a sample while a micrometer syringe
dispenses precise droplets of water on the measured surface. The droplet's image is projected on the
screen so that an operator can take an accurate direct measurement. The instrument is equipped with
a built-in spot ionizer to keep the sample free of static charges.
The choice of a repetitive pipetter or micrometer syringe for the dispenser must be specified at purchase.
Shown is the specimen holder with a loaded sample. The dispenser tip is above the sample, projection lens on the left, illuminator on the right.
CAM-FILM Capabilities:
Features
Proprietary Conversion Chart for Dyne/cm Data
Each instrument comes with a chart which helps convert contact angle data into more familiar
readings in dyne/cm.
Special Film Specimen Holder
The special specimen holder makes taking measurements quick and easy. Film is easily loaded into
the specimen holder. It can then be conveniently advanced with a turn of a knob for multiple
measurements. Five to six readings per minute can be taken.
Projection screen design
The use of a projection screen makes it possible for more than one person to observe measurements.
It is good for educational and discussion purposes, and makes operator supervision easy.
Half-Angle Measuring Method
With the Half-AngleTM measuring method, the contact angle is easily and unequivocally determined
by directly reading the scale on the screen.
Water as Testing Liquid
The meter uses deionized water as a testing liquid. No more need for keeping multiple bottles of toxic
dyne liquids.
Precision of Wetting Tension Instruments*
The single-operator and single-laboratory, multi-operator precision is +/- 1 dyne/cm. The
multilaboratory precision is +/- 2.0 dyne/cm.
* - based on a study involving screen laboratories.
Measured range: |
10° to 110° |
Film thickness: |
10 mils maximum |
Droplet size: |
10µl |
Dispenser capacity: |
50 droplets min |
Film specimen size: |
1 wide strips |
Accuracy: |
± 2° |