| 摘要 |
PCT No. PCT/EP91/02414 Sec. 371 Date Jun. 17, 1993 Sec. 102(e) Date Jun. 17, 1993 PCT Filed Dec. 16, 1991 PCT Pub. No. WO92/11094 PCT Pub. Date Jul. 9, 1992.In curtain coating, uniform layer or layers are only obtained if the operational variables are held within precise limits. These limits define a "coating window". However, one of the boundaries of this "window" is governed by the occurrence of air-entrainment. Described herein is an improved coating process in which allows the "coating window" to be enlarged. This is achieved by using a material adjacent the support on to which the liquid material is to be coated which readily shear-thins.
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