Creping blade for tissue making
A creping blade having a first side face, a second side face, and a shelf extending from the first side face to the second side face, with a scraping edge at the intersection of the first side face and the shelf. The shelf has a first section having a first coefficient of friction and a second section have a second coefficient of friction and the second coefficient of friction is greater than the first coefficient of friction.
1. A creping blade comprising:
a first side face, a second side face, and a shelf extending from the first side face to the second side face; and
a scraping edge at the intersection of the first side face and the shelf, wherein the shelf is made of a base material having a first section and a second section, the base material at the first section having a first coefficient of friction and the base material at the second section being processed to produce a second coefficient of friction that is greater than the first coefficient of friction.
2. The creping blade of claim 1 , wherein the first section is positioned proximate to the scraping edge.
3. The creping blade of claim 1 , wherein the second section is spaced apart from the scraping edge by the first section.
4. The creping blade of claim 1 , wherein the second section is placed proximate to the scraping edge.
5. The creping blade of claim 1 , wherein the first section is spaced apart from the scraping edge by the second section.
6. The creping blade of claim 1 , wherein the shelf extends at an angle from the first side face which, when the creping blade is in contact with a drum, forms a wear angle between the drum and the scraping edge.
7. The creping blade of claim 1 , wherein the shelf further comprises a third section, the third section extending from the second section to the second side face.
8. The creping blade of claim 7 , wherein the third section extends from the second side face to the second section at an angle relative to the second section.
9. The creping blade of claim 1 , wherein the first section has a first length, the second section has a second length, and the second length is at least three times the first length.
10. The creping blade of claim 1 , wherein the creping blade is made of steel.
11. The creping blade of claim 1 , wherein the creping blade is made of ceramic.
12. The creping blade of claim 1 , further comprising a ceramic tip that forms the scraping edge.
13. The creping blade of claim 1 , wherein the base material of the shelf at the second section is processed by at least one of etching and abrasion.