Inventory audit notice: TAPPI Press orders will not be processed from August 21–28 during our fiscal year-end inventory audit. Orders placed during this time will ship starting August 31, in the order received. Normal payment processing also resumes August 31.

Thanks for your patience — this helps us serve our members better.

Search

Use the search bar or filters below to find any TAPPI product or publication.

Showing 2,531–2,540 of 3,187 results (Duration : 0.012 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Collections

Journal articles
Open Access
An overview of ferrography and its use in maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

An overview of ferrography and its use in maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Alternative methods for bleaching post consumer waste papers, TAPPI JOURNAL, August 1991, Vol. 74(8)

Alternative methods for bleaching post consumer waste papers, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Water-based inks for packaging films, TAPPI JOURNAL, August 1991, Vol. 74(8)

Water-based inks for packaging films, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Bleaching of nonwood pulps: can sodium hydroxide be replaced with sodium carbonate in the alkaline extraction of nonwood pulps?, TAPPI JOURNAL, August 1991, Vol. 74(8)

Bleaching of nonwood pulps: can sodium hydroxide be replaced with sodium carbonate in the alkaline extraction of nonwood pulps?, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
On-machine maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

On-machine maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Pigment-cobinder interactions and their impact on coating rheology, dewatering, and performance, TAPPI JOURNAL, December 1991, Vol. 74(12)

Pigment-cobinder interactions and their impact on coating rheology, dewatering, and performance, TAPPI JOURNAL, December 1991, Vol. 74(12)

Journal articles
Open Access
New trends in deinking technology removing difficult inks from wastepaper, TAPPI JOURNAL, February 1991, Vol. 74(2)

New trends in deinking technology removing difficult inks from wastepaper, TAPPI JOURNAL, February 1991, Vol. 74(2)

Journal articles
Magazine articles
Open Access
Improving paper wet strength via increased lignin content and hot-pressing temperature, TAPPI JOURNAL October 2020

ABSTRACT: It is known that the strength properties of wood-based paper materials can be enhanced via hot-pressing techniques. Today, there is a desire not only for a change from fossil-based packaging materials to new sustainable bio-based materials, but also for more effective and eco-friendly solutions for improving the dry and wet strength of paper and board. Against this background, hot pressing of paper made from high yield pulp (HYP), rich in lignin, becomes highly interesting. This study investigated the influence of pressing temperature and native lignin content on the properties of paper produced by means of hot pressing. Kraft pulps of varied lignin content (kappa numbers: 25, 50, 80) were produced at pilot scale from the same batch by varying the cooking time. We then studied the effect of lignin content by evaluating the physical properties of Rapid Köthen sheets after hot pressing in the temperature range of 20°C•200°C with a constant nip pressure of 7 MPa. The pilot-scale cooked pulps were compared with reference samples of mill-produced northern bleached soft-wood kraft (NBSK) pulp and mill-produced chemithermomechanical pulp (CTMP).Generally, the results demonstrated that lignin content had a significant effect on both dry and wet tensile index. All of the pilot cooked pulps with increased lignin content had a higher tensile index than the reference NBSK pulp. To obtain high tensile index, both dry and wet, the pressing temperature should be set high, preferably at least 200°C; that is, well above the glass transition temperature (Tg) for lignin. Moreover, the lignin content should prefera-bly also be high. All kraft pulps investigated in this study showed a linear relationship between wet strength and lignin content.

Journal articles
Open Access
A Statistical Study of Process Variables to Optimize a High Speed Curtain Coater: Part I, TAPPI JOURNAL January 2009

A Statistical Study of Process Variables to Optimize a High Speed Curtain Coater: Part I, TAPPI JOURNAL January 2009

Journal articles
Brazil and Argentina Agree to Limit Paper Trade, Paper360º June/July 2009

Brazil and Argentina Agree to Limit Paper Trade, Paper360º June/July 2009

Inside this Section