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 1,911–1,920 of 1,952 results (Duration : 0.011 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Collections

Journal articles
Open Access
Caustic treatment of OCC for strength improvement during recycling, TAPPI JOURNAL, April 1994, Vol. 77(4) (1524KB)

Caustic treatment of OCC for strength improvement during recycling, TAPPI JOURNAL, April 1994, Vol. 77(4) (1524KB)

Journal articles
Open Access
Analysis of corrugator side trim, TAPPI JOURNAL, April 1994, Vol. 77(4) (1535KB)

Analysis of corrugator side trim, TAPPI JOURNAL, April 1994, Vol. 77(4) (1535KB)

Journal articles
Open Access
Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching: part 1: laboratory investigation, TAPPI JOURNAL, August 1994, Vol. 77(8)

Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching: part 1: laboratory investigation, TAPPI JOURNAL, August 1994, Vol. 77(8)

Journal articles
Open Access
Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching part 3: mill trial results, TAPPI JOURNAL, August 1994, Vol. 77(8)

Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching part 3: mill trial results, TAPPI JOURNAL, August 1994, Vol. 77(8)

Magazine articles
Open Access
Suction roll pilot bearing failure due to inadequate lubrication, TAPPI JOURNAL, December 1994, Vol. 77(12), TAPPI JOURNAL, December 1994, Vol. 77(12)

Suction roll pilot bearing failure due to inadequate lubrication, TAPPI JOURNAL, December 1994, Vol. 77(12), TAPPI JOURNAL, December 1994, Vol. 77(12)

Journal articles
Open Access
Effect of basis weight and freeness on sheet permeability and critical impulse-drying temperature, TAPPI JOURNAL, February 1994, Vol. 77(2)

Effect of basis weight and freeness on sheet permeability and critical impulse-drying temperature, TAPPI JOURNAL, February 1994, Vol. 77(2)

Journal articles
Open Access
Predicting print mottle: a method of differentiating between three types of mottle, TAPPI JOURNAL, July 1994, Vol. 77(7)

Predicting print mottle: a method of differentiating between three types of mottle, TAPPI JOURNAL, July 1994, Vol. 77(7)

Journal articles
Open Access
The dagbladet full-scale printing trials: part 3: linting in four-color offset printing, TAPPI JOURNAL, July 1994, Vol. 77(7)

The dagbladet full-scale printing trials: part 3: linting in four-color offset printing, TAPPI JOURNAL, July 1994, Vol. 77(7)

Journal articles
Open Access
Hydrodynamic Pressure Generated by Doctoring in Blade Gap Fo

Hydrodynamic Pressure Generated by Doctoring in Blade Gap Formers, 1999 Engineering Conference Proceedings

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.

Inside this Section