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Down hair - Wikipedia, the free encyclopedia (124 words) |
 | "Undercoat" redirects here, but this term is also used to mean a layer of paint below the top layer. |
| The hairs are short and crimped, which makes them highly efficient for trapping air and insulating the animal. |
| In the hobby of animal fancy, the down hair is collectively called the undercoat and is an important conformation point in shows, particularly dog and cat shows. |
| Patent 6,099,562 (2389 words) |
| By partially covering the surface during manufacture or inducing "breaks" in the topcoat during mounting/implanting of the coated device, the biologically active material or drug of the undercoat is permitted to be released from the undercoat through those parts of the undercoat which are not covered by the topcoat. |
| In the case of certain undercoat materials, thereafter the polymer material is cured at room temperature or elevated temperatures. |
| Furthermore, to make a topcoat which covers less than the entire surface of the undercoat or which only partially covers the undercoat, a poor solvent wash can be applied to the topcoat, to force the topcoat polymer to shrink so that the undercoat is not entirely covered. |
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