Embossing system and product made thereby with both perforate bosses in the cross machine direction and a macro pattern
View Patent ↗An embossing system is provided for embossing at least a portion of a web comprising a first roll and at least a second roll. The first roll and second roll may define a first nip for embossing the web. At least one of the first roll and the second roll has elongated embossing elements extending substantially in the machine direction and optionally at least one of the first and second rolls has elongated embossing elements extending substantially in the cross-machine direction. At least one of the first roll and the second roll may also have perforate embossing elements extending substantially in the cross-machine direction that may or may not be elongated. The embossing elements are capable of imparting one or both of a cube embossing pattern or a perforate emboss on the web. The web may be a cellulosic fibrous web, a portion of which is lignin-rich, high coarseness fiber having generally tubular fiber configuration. In addition, the web may be creped with an undulatory creping blade.
1. A method of embossing at least a portion of a web, including:
providing a first roll and at least a second roll, the first roll and second roll defining a first nip for imparting a first pattern comprising a cube emboss pattern and a second pattern comprising a substantially cross-machine direction perforate emboss to the web;
imparting the cube emboss pattern to the web; and
imparting the substantially cross-machine direction perforate emboss to the web.
2. The method according to claim 1 , wherein both the first and second rolls have elongated, mated embossing elements extending substantially in the machine direction and perforate embossing elements extending substantially in the cross-machine direction, wherein the elongated embossing, mated embossing elements impart the cube emboss pattern to the web and the perforate embossing elements impart the substantially cross-machine direction perforate emboss to the web.
3. The method according to claim 1 , further including providing a cellulosic fibrous web comprising preparing an aqueous cellulosic fibrous furnish, wherein at least about 15% by weight of the fiber, based on the weight of the cellulosic fiber in the furnish, is lignin-rich, high coarseness fiber having generally tubular fiber configuration as well as an average fiber length of at least about 2 mm and a coarseness of at least about 20 mg/100 m.
4. The method according to claim 3 , wherein the lignin-rich, high coarseness generally tubular fiber is selected from at least one of APMP, TMP, CTMP, and BCTMP.
5. The method according to claim 4 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of at least about 15% by weight.
6. The method according to claim 5 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of at least about 20% by weight.
7. The method according to claim 6 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of at least about 25% by weight.
8. The method according to claim 7 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of from about 25% to about 35% by weight.
9. The method according to claim 1 , further including creping the web with an undulatory creping blade.
10. The method according to claim 3 , further including creping the web with an undulatory creping blade.
11. The method according to claim 4 , further including creping the web with an undulatory creping blade.
12. A method of embossing at least a portion of a web, including providing a cellulosic fibrous web to at least a first nip, wherein the first nip imparts a first pattern comprising a cube emboss pattern to the web and a second pattern comprising a substantially cross-machine direction perforate emboss pattern to the web.
13. The method according to claim 12 , wherein providing a cellulosic fibrous web further comprises preparing an aqueous cellulosic fibrous furnish, wherein at least about 15% by weight of the fiber, based on the weight of the cellulosic fiber in the furnish, is lignin-rich, high coarseness fiber having generally tubular fiber configuration as well as an average fiber length of at least about 2 mm and a coarseness of at least about 20 mg/100 m.
14. The method according to claim 13 , wherein the lignin-rich, high coarseness generally tubular fiber is selected from at least one of APMP, TMP, CTMP, BCTMP.
15. The method according to claim 14 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of at least about 15% by weight.
16. The method according to claim 15 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of at least about 20% by weight.
17. The method according to claim 16 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of at least about 25% by weight.
18. The method according to claim 17 , wherein the lignin-rich, high coarseness, generally tubular fiber is BCTMP having a lignin content of from about 25% to about 35% by weight.
19. The method according to claim 12 , further including creping the web with an undulatory creping blade.
20. The method according to claim 13 , further including creping the web with an undulatory creping blade.