A fibrous web is uniformly adhered to the surface of a smooth creping cylinder or other creping surface without causing substantial compression of the web. A raised pattern is pressed into the web toward the creping cylinder to cause the portions of the web that are pressed to adhere more strongly to...http://www.google.com.tw/patents/US4125659?utm_source=gb-gplus-share專利 US4125659 - Patterned creping of fibrous products
