| 摘要 |
A multiply paper web comprises a base ply of a post-manufactured sheet such as reused old newsprint or reused office waste. An upper and/or lower ply is bonded to the base ply to cover any printing or contamination of the base ply, thus allowing the resulting web to be reprinted or used for writing or packaging grades. The base ply is not repulped, reducing water and energy usage in the manufacturing process. The upper and lower plies may be wet formed or dry formed. Dry formed upper and/or lower plies result in a paper product utilizing little or no water in the manufacturing process, and no aqueous effluent. The post-manufactured base ply provides the strength ply.
|
