![]() All models can be used in combination with standard block type film applicators such as bird/baker models,sagging and levelling testers or spiral bar type film applicators (wire wound rod type). Draw down paint sample cards, methods of making draw down paint sample cards from fresh paint using draw down paint sample cards, and systems including draw down paint sample cards and draw down bars sized for use with the draw down paint sample cards. Multiple types of automatic film applicators are available for either glass/paper/metal substrates or foils. Motorised Film Applicators are also used in the adhesives industry. To pre-pare samples for testing rheological properties, abrasion resistance, hiding power and gloss the Motorised Automatic film applicator is a must have. Over the complete surface the film thickness is even. Programmable speeds from 2 - 200 mm/sec or 0.1 - 7.9 in/s in 1mm/sec (0. It is compatible with virtually all applicators, both bar and wire types. With the Automatic film applicator these variable factors are being stabilised. The drawdown cards are easy to use and an inexpensive substrate to test a variety of coating properties such as opacity, spreading rate, penetration behavior. The byko-drive S is designed to assist the user in achieving consistent film application by maintaining a consistent speed and drawdown pressure. Charts stacked one above the other on racks with a minimum vertical clearance of 4 between charts. Allow drawdowns to dry in a horizontal position. Average weights are required for hiding power calculations. Other factors that may influence the result are the shear rate and the weight of the applicator. when recording paint weights number of seconds after paint drawdown before weighing. Variations in speed, pressure and direction of draw down cause irregularities. At low drawdown ratios, inviscid flow analyses nor-mally predict that material near the inner free surface first moves upstream of the contact line, forming a fluid heel nearby (negative contact length). fill the reservoir with the test coating and draw down a uniform stripe. The Motorised Automatic film applicator or drawdown machine provides a reliable basis to apply coating films to test charts, panels or foils in a uniform and reproducible way in order to eliminate variations caused by human factors. Each film applicator has thickness markings down each side for fast set up. ![]()
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