Search results

1 – 10 of over 3000
Article
Publication date: 1 June 2003

E.S. Abd El‐Sayed and A.H. Basta

This study examines the effects of using magnesium chloride as a precipitating agent of sodium silicate on the mechanical, optical and fire retardant properties of the resulting…

Abstract

This study examines the effects of using magnesium chloride as a precipitating agent of sodium silicate on the mechanical, optical and fire retardant properties of the resulting paper sheets. Two types of treatments (internal and external), were carried out to investigate such effects on the paper sheets prepared from wood pulp and from non‐wood fibrous, bagasse pulp. The results obtained showed that the treatment of paper sheets with either sodium silicate or sodium silicate‐magnesium chloride led to a decrease in the activation energy of the initial main degradation stages. Wood pulppaper sheets treated with sodium silicate showed better fire retardant properties than the sodium silicate‐magnesium chloride treated wood pulppaper sheets. A reverse trend was noted in the case of paper sheets made from bagasse pulp.

Details

Pigment & Resin Technology, vol. 32 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Book part
Publication date: 1 November 2008

Enrico Baraldi and Torkel Strömsten

The role of management control has not received sufficient attention in the literature on value creation so far. Therefore, this paper aims to investigate the role of control in…

Abstract

The role of management control has not received sufficient attention in the literature on value creation so far. Therefore, this paper aims to investigate the role of control in value creation in industrial networks. More specifically, the aim is to examine the management and control of interfaces between key resources within and between firms, in the networks surrounding firms, when they attempt to create value. All the firms that take part in a value-creation process have both formal and informal control systems: these firms have budgets, specific routines, reward systems, and sanctioned “ways to behave.” The paper relates the Industrial Marketing and Purchasing (IMP) group's research on interaction, relationships, and networks with control literature, and presents a framework for controlling resource interfaces in a network setting. Two in-depth cases illustrate the role of control in value creation. The first case covers the development of a low-weight newspaper grade that Holmen and its paper mill Hallsta initiated. The second case examines the attempt to develop and commercialize a new, energy efficient pulping technology.

Details

Creating and managing superior customer value
Type: Book
ISBN: 978-1-84855-173-2

Article
Publication date: 1 October 2004

Ana Cláudia Dias, Margarida Louro, Luís Arroja and Isabel Capela

The paper identifies and assesses the potential environmental burdens associated with the life cycle of printing and writing paper produced in Portugal from Eucalyptus globulus and

1656

Abstract

The paper identifies and assesses the potential environmental burdens associated with the life cycle of printing and writing paper produced in Portugal from Eucalyptus globulus and consumed in Germany. Life cycle assessment methodology is applied in accordance with International Organization for Standardization standards. The life cycle of printing and writing paper covers the following stages: forest, pulp production, paper production, final disposal, energy production, chemical production and transports. The results suggest that pulp production processes have an important contribution to water emissions, resulting in a major contribution to eutrophication. Besides, it plays a major role in renewable energy consumption. Energy production in the grid, printing and writing paper production and transports contribute significantly to air emissions and to non‐renewable energy consumption, and consequently to global warming, acidification and non‐renewable resource depletion. Wastepaper landfilling assumes the predominant role in photochemical oxidant formation. Useful information is provided regarding the stages of the life cycle where improvements should be done in order to achieve an effective reduction of the environmental burdens.

Details

Management of Environmental Quality: An International Journal, vol. 15 no. 5
Type: Research Article
ISSN: 1477-7835

Keywords

Article
Publication date: 23 February 2015

E.O. Onuorah, J.T. Nwabanne and E.L.C. Nnabuife

The objective of this study was to determine the pulping and paper making potentials of oil palm (E guineensis). Fibrous material from the whole trunk (WT), empty fruit bunch…

Abstract

The objective of this study was to determine the pulping and paper making potentials of oil palm (E guineensis). Fibrous material from the whole trunk (WT), empty fruit bunch (EFB, fronds (FDS) and depithed trunk (DT) were evaluated using proximate chemical analysis, fiber morphological and related characteristics. Effect of active alkali (AA) % as Na2O on kraft pulping properties and the handsheet paper propertie was studied. Proximate chemical analysis reveal acceptable cellulose content for EFB (43.51%), FDS (51.13%) and DT (53.80%) while WT (32.44) is unacceptable. Low lignin content obtained (17.8−21.8%) suggests easier pulping characteristics. The high % NaOH solubility of WT (26.05%) and FDS (32.1%) suggest potential of high effluent loads. Fiber morphological studies revealed that approximately 83% of fibers are ≤ 1.5 mm in length thus putting oil palm as a short fiber source. The slenderness ratio ranges from 33.44 to 82.80; Runkelratio from 0.40 to 0.63; flexibility co-efficient from 57.20 to 71.46 and rigidity co-efficient from 0.29 to 0.43. Studies of pulping properties reveal that as active alkali % was increased the percentage total pulp yield, % screened pulp yield, % screened rejects, pulp kappa number, klason lignin and tear index of resultant pulp/handsheet all/each decreased. Conversely, as active alkali % was increased the Brust index, double fold number, breaking length, tensile index of paper handsheets and pulp brightness were each enhanced. It was concluded that in pulping of WT AA% should be < 14 and EFB pulping should be ≤ 14 in order to have acceptable yield. Also in order to have acceptable tear index, AA% should be ≤ 16. It is being recommended that trunks should be depithed in order to have acceptable yield. The fibrous material from oil palm make acceptable raw material for paper making and are good hardwood substitutes. Paper produced when bleached can be used for printing and writing papers while the unbleached grades can be used for wrapping and package papers and for corrugated boards.

Details

World Journal of Engineering, vol. 12 no. 1
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 2 August 2013

Jukka Rantamäki, Eeva‐Liisa Tiainen and Tuomo Kässi

A control chart is a widely used Six Sigma DMAIC process measure and control phase tool. The purpose of this paper is to contribute to the body of knowledge on applying…

Abstract

Purpose

A control chart is a widely used Six Sigma DMAIC process measure and control phase tool. The purpose of this paper is to contribute to the body of knowledge on applying statistical process control (SPC) methods in a pulp mill production organization and the special issues that need to be considered in this context.

Design/methodology/approach

The method for obtaining the results was action research, where the researcher actively participated in implementing changes in organization. Procedures to detect and further handle the deviations in a pulp mill organization were created and implemented. A cause and effect diagram used in finding causes and storing the accumulated knowledge was modified to make it applicable to this environment.

Findings

Factors for successful SPC implementation were found to be in line with earlier findings in other industries. SPC can act as a means of organizational learning in the pulp and paper industry. Specific problems in the pulp and paper industry concerning the use of SPC were the autocorrelation of data, excessive measurement variation, and limited process knowledge. The effectiveness of SPC in a pulp mill was shown both in the decreasing amount of deviations and in the positive opinions of the employees.

Research limitations/implications

Findings are generated from a single case, so general applicability is limited.

Practical implications

This case study can be used as a benchmark by other practitioners in the industry.

Originality/value

This article provides new knowledge in the context of implementing SPC in a pulp and paper manufacturing organization.

Details

International Journal of Lean Six Sigma, vol. 4 no. 3
Type: Research Article
ISSN: 2040-4166

Keywords

Article
Publication date: 5 November 2021

Merve Engin, Sinan Sönmez and Mustafa Batuhan Kurt

The purpose of this paper is to investigate the influences of fibre lengths and a given range of paper grammages on the fundamental properties of unprinted and printed papers by…

Abstract

Purpose

The purpose of this paper is to investigate the influences of fibre lengths and a given range of paper grammages on the fundamental properties of unprinted and printed papers by using mineral oil-based offset printing inks and also evaluate these results in terms of printing and tensile characteristics.

Design/methodology/approach

A design research approach has been based on the production of various laboratory handmade papers and their printing process with mineral oil-based offset printing inks. The analysis of mechanical and structural tests results of the unprinted and the printed papers have been evaluated.

Findings

This study is confirmed that the mineral oil-based offset printing inks can be easily applied to the surface of papers having different grammages and pulp contents. An increase was observed in the tensile index values of the papers with the printing process, and these increases were more evident (about 80%) particularly in low grammage papers having high short fibre content.

Originality/value

The originality of this work is based on understanding and comparing the effects of grammage and the effect of pulp contents (having long and short fibre) on tensile characteristics of printed and unprinted handsheets.

Details

Pigment & Resin Technology, vol. 52 no. 1
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 15 April 2022

Mairi N. McKinnon and Brad S. Long

The motivation for this paper comes from Canada’s Truth and Reconciliation’s (TRC) Calls to Action, and in particular, the call for more meaningful consultation and respectful…

Abstract

Purpose

The motivation for this paper comes from Canada’s Truth and Reconciliation’s (TRC) Calls to Action, and in particular, the call for more meaningful consultation and respectful, consent-based relationships between businesses and Indigenous communities in Canada. To this end, this study empirically examines leadership in the context of a wicked problem faced by a pulp and paper mill and suggest an Indigenous epistemology as helpful to inform the leadership behaviours employed in this company.

Design/methodology/approach

Firstly, this study established that the problem faced by the company aligns with the characteristics of wicked problems, hence necessitating a collective leadership approach. This study then compiled a database from publicly available documents and inductively coded this data to identify themes that told us something about the leadership behaviours employed by the company as it attempted to resolve the problem at hand.

Findings

This study provides evidence that the company did not employ collective leadership when attempting to tame its wicked problem. It then shows that the context in which the firm operates lends itself well to the Mi’kmaw concept of Two-Eyed Seeing as a guiding principle that could have informed the company’s leadership and contributed to a long-overdue process of reconciliation. This study proposes several specific actions that plausibly could have helped produce such an outcome.

Originality/value

This paper helps fill a void in applications of the wicked problem construct to businesses. Further, this study suggests that the problem faced by this firm remained difficult to tame precisely because it failed to employ a collective leadership approach. The contribution to the leadership literature comes from introducing Two-Eyed Seeing and showing how it may help produce leadership that is inherently more collective in nature. Beyond its instrumental value, this approach may nurture more consent-based relationships between businesses and Indigenous communities in Canada, as called for by the TRC, hence contributing to reconciliation with a long-suffering neighbouring Indigenous community.

Details

Qualitative Research in Organizations and Management: An International Journal, vol. 17 no. 3
Type: Research Article
ISSN: 1746-5648

Keywords

Article
Publication date: 1 April 2005

E.S.A. El‐Sayed, M.F. Hesham and H. El‐Saied

To evaluate the effects of different levels of quaternised pyrodextrin as wet‐end and filler retention aid additives in papermaking.

Abstract

Purpose

To evaluate the effects of different levels of quaternised pyrodextrin as wet‐end and filler retention aid additives in papermaking.

Design/methodology/approach

The pulp furnishes used in this study were a mixture of bleached rice straw pulp with bleached sulphite softwood pulp at a ratio of 60:40. The beaten pulps (never dried) were treated with different grades of modified starch (Pyrodextrins). The results obtained were compared with those of several commercial polymers, such as Accostrength®86, cationic starch and polyacrylamide.

Findings

The results obtained from this study showed that addition of 0.3 percent of British Gum (BG) (Degree of Substitution at 0.058) grade pyrodextrin to the pulp slurry, especially in case of kaolin as paper filler gave the most significant improvement in paper properties as well as filler retention. The results obtained also showed that the filler retention and paper properties were better/higher for all pyrodextrins studied than those obtained from both Accostrength®86 and polyacrylamide.

Research limitations/implications

Using quaternised pyrodextrins as wet‐end additives and filler retention aids improved all mechanical properties of treated paper, except the brightness which decreased very slightly.

Practical implications

The grade of pyrodextrins used in this work could be used to improve the physical and strength properties of paper sheets.

Originality/value

Different types of pyrodextrin namely, Dexy‐84 (D‐84), Dexy‐86 (D‐86) and British Gum (BG) could be used as paper wet‐end additives and filler retention aids in paper making processing.

Details

Pigment & Resin Technology, vol. 34 no. 2
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 16 August 2011

Teijo Palander and Lauri Vesa

The purpose of this paper is to investigate optimal strategic decision alternatives for Finnish pulp production companies in response to rising export tariffs on Russian…

Abstract

Purpose

The purpose of this paper is to investigate optimal strategic decision alternatives for Finnish pulp production companies in response to rising export tariffs on Russian roundwood. Traditionally, increasing the domestic or Russian supply to pulp mills satisfied their wood requirements. However, once this conventional strategy could no longer be implemented (in 2008), the wood requirements were met by adjusting pulp production (reducing) and wood procurement (increasing domestic procurement).

Design/methodology/approach

As the primary research data for the study, the procurement situation in 2005 was used to describe the conventional business strategy for purchasers of Russian or domestic roundwood. Possible business strategies were then simulated for changing pulp production by Stora Enso, with the goal of adjusting roundwood requirements, to develop a globally‐optimal strategy to solve the procurement problem.

Findings

After removing production by the northernmost Finnish pulp mill, the authors could not find a globally optimal solution for the wood‐procurement problem. It was found that Russia's tax policy (high export tariffs on roundwood) will have large implications for Finnish wood procurement (i.e. the use of domestic wood vs imported Russian roundwood), and can dramatically change the basis, type, and location of pulp mills. The reduction or total elimination of imported Russian roundwood caused severe supply shortages and reduced pulp production.

Originality/value

Based on the results of analysis, the authors recommend adjustment methods to assist strategic wood‐procurement decisions, given the need to adapt wood‐procurement logistics to an unpredictable and complicated pulp production environment that requires continual optimization of the wood flow.

Details

The International Journal of Logistics Management, vol. 22 no. 2
Type: Research Article
ISSN: 0957-4093

Keywords

Book part
Publication date: 16 May 2007

Antonina Kulyasova and Ivan Kulyasov

This chapter analyses conditions under which residents of a small Russian town accept the concepts “pollution” and “ecological risk.” The town in question is Sokol in the Vologda…

Abstract

This chapter analyses conditions under which residents of a small Russian town accept the concepts “pollution” and “ecological risk.” The town in question is Sokol in the Vologda oblast of the Russian Federation, where there are two pulp and paper mills and other forest industries. Sokol is a typical small town with a population of about 40,000. The pulp and paper mills are locally run. The issues surrounding Sokol's pulp and paper mills generally present a typical Russian picture (Kuliasova & Kuliasov, 2002a, 2002b) with one major exception. Industrialization in Sokol goes back more than a century and thus reflects the broader history of the 20th century.

Details

Cultures of Contamination
Type: Book
ISBN: 978-0-7623-1371-6

1 – 10 of over 3000