Packages are sometimes camouflaged with a coating of grass, which makes them hard for guards to detect.
His ware was better formed, being finished on a lathe; better surfaced, with a coating of white pipe clay; and harder and lighter because of the introduction of calcined flint into the body.
Coating of hard powder materials on hard substrate using kinetic spray technique has also been considered a difficult phenomenon.
Adhesion efficiencies higher than 90% were achieved by selecting precise coating conditions, indicating the feasibility of the process for coating of hard gelatine capsules.
This article presents an evaluation of the effects of the spouted bed design and operating conditions on system fluiddynamics and process performance during enteric coating of hard gelatine capsules.
It is possible that the coating of dry dung made the floor less slippery, less abrasive or less hard or that a coating of dung on the sows' limbs made it difficult to detect lesions.
To prevent this, several coats of hard polyurethane or cellulose lacquer are applied.
Based on the calculated results, a high strength Cu Ti intermetallic coating consisting of hard CuTi particles on a ductile Cu4Ti3 matrix is proposed.
Its crisp-textured coat, a combination of hard and soft hairs, may be pepper (silver-gray to blue-black) or mustard (light fawn to reddish brown) in colour.
