Automatic warehouses in coated paper production line.

1990 ◽  
Vol 44 (2) ◽  
pp. 215-219
Author(s):  
Atsushi Umeyama
Keyword(s):  
Production Line ◽  
Coated Paper ◽  
Paper Production

Economics of coated paper production made from deinked pulp

TAPPI Journal ◽  
2013 ◽  
Vol 12 (4) ◽  
pp. 19-27
Author(s):  
PATRICK HUBER ◽  
LAURENT LYANNAZ ◽  
BRUNO CARRÉ
Keyword(s):  
Mechanical Properties ◽  
Optimization Methods ◽  
Coating Process ◽  
Coated Paper ◽  
Paper Production ◽  
Base Paper

The fraction of deinked pulp for coated paper production is continually increasing, with some mills using 100% deinked pulp for the base paper. The brightness of the coated paper made from deinked pulp may be reached through a combination of more or less extensive deinking, compensated by appropriate coating, to optimize costs overall. The authors proposed general optimization methods combined with Kubelka-Munk multilayer calculations to find the most economical combination of deinking and coating process that would produce a coated paper made from DIP, at a given target brightness, while maintaining mechanical properties.

Analysis of Paper Vertical Inverting Accuracy in the Packing Paper Production Line

2013 ◽  
Vol 312 ◽  
pp. 480-483
Author(s):  
Chao Cheng ◽  
Ji Fei Cai
Keyword(s):  
Production Line ◽  
General Equation ◽  
Constraint Equation ◽  
Accuracy Analysis ◽  
Drop Height ◽  
Deviation Angle ◽  
Paper Production ◽  
Projectile Motion ◽  
Precise Control ◽  
The Relationship

In order to realize precise control of the vertical inverting feeding of paper, the paper proposes the scheme to analyse the accuracy. Based on the geometric constraint relations of the feeding device, the position constraint equation of the device is established, together with the speed-acceleration formula; and the relationship between the paper inverting deviation angle and its drop height is obtained using the general equation of dynamics of the horizontal projectile motion as vertical inverting accuracy analysis of the device. The results of the study show that the precise control of the vertical inverting feeding of paper can be realized through the control of the angle.

The Effects of the Hollow Plastic Pigment on the Print Properties of High Light Ink_jet Paper

2011 ◽  
Vol 236-238 ◽  
pp. 1160-1163
Author(s):  
Yan Zhao Yang ◽  
Chuan Shan Zhao ◽  
Jing Jing Wang ◽  
Jian Tong Cui
Keyword(s):  
Production Process ◽  
Rheological Properties ◽  
High Light ◽  
Cross Linking ◽  
Coated Paper ◽  
Inorganic Pigment ◽  
Paper Production ◽  
Ink Jet ◽  
Structural Plastic

Traditional cast coated glossy photo paper production process due to its characteristics that the water evaporates from non-coated cast side, so the coating speed is slow, ground paper is non-waterproof paper, therefore the paper products are easy to transmutative, as the cast shows that the formation of dense coatings membrane, the lower ink absorption. To solve such the problems, a novel porous ink receiving layer constituted by a litter amount of a hydrophilic binder(PVA) and a cross-linking agent, a large amount of inorganic pigment(SiO2) and a hollow structural plastic pigment. In this paper, the effects of the hollow structural plastic pigment rheological properties of the color and the printing and preservation properties of ink jet paper were investigated. Because of the thermoplasticity of the plastic pigment the calendering and dry technology were also studied. From the viewpoint of water-fastness and preventing the penetration of binder, the resin coated paper(being so-called RC paper) is selected as the substrate.

scholarly journals Implementation of Lean Six Sigma for production process optimization in a paper production company

2021 ◽  
Vol 14 (3) ◽  
pp. 661
Author(s):  
Adefemi Adeodu ◽  
Mukondeleli Grace Kanakana-Katumba ◽  
Maladzhi Rendani
Keyword(s):  
Production Process ◽  
Real Time ◽  
Six Sigma ◽  
Production Line ◽  
Lean Six Sigma ◽  
Production Performance ◽  
Paper Production ◽  
Time Problem ◽  
Production Company ◽  
Cycle Efficiency

Purpose: This study aimed at implementing lean six sigma to evaluate the productivity and manufacturing waste in the production line of a paper companyMethodology/Approach: The study is a case study in nature. The method illustrates how lean six sigma (LSS) is used to evaluate the existing production process in a paper production company with focus on productivity and manufacturing waste. The study considered a real-time problem of customer’s dissatisfaction. The gathered data is based on machine functionality (up time, down time and cycle time); materials and labour flow at every process stages of the production line. The optimization of the production process was based on lean tools like value stream mapping, process cycle efficiency, Kaizen, 5S and pareto chartFindings: Based on lean six sigma application, it was discovered that the present production performance was below standard and more manufacturing wastes were generated. The present productivity and manufacturing wastes are reported as low process cycle efficiency (23.4 %), low takt time (4.11 sec), high lead time (43200sec), high number of products not conforming to six sigma values, high down time (32.64 %) and excess labour flow (33). After the implementation of the lean six sigma tools for certain period of time, there are lots of improvements in the production line in terms of all the parameters considered.Research Limitation/ Implications:  The study has demonstrated an application of lean six sigma in the case of solving real-time problems of productivity and manufacturing wastes which have a direct implication on customer’s satisfaction. The lesson learned and implications presented can still be further modeled using some lean based software for validityOriginality/Value: The study has contributed to the body of knowledge in the field of LSS with focus to process based manufacturing, unlike most literature in the field concentrate more on discrete based manufacturing.   

Resource efficiency in deinked pulp production: a review

TAPPI Journal ◽  
2014 ◽  
Vol 13 (11) ◽  
pp. 37-43 ◽  
Author(s):  
LIISA KOTANEN ◽  
MIKA KÖRKKÖ ◽  
ARI ÄMMÄLÄ ◽  
JOUKO NIINIMÄKI
Keyword(s):  
Waste Disposal ◽  
Resource Efficiency ◽  
Raw Material ◽  
Ecological Strategy ◽  
Recycled Paper ◽  
Paper Production ◽  
Recycled Pulp ◽  
Current State ◽  
The Cost ◽  
Pulp Production

The use of recovered paper as a raw material for paper production is by far the most economical and ecological strategy for the disposal of waste paper. However, paper production from recovered paper furnish generates a great amount of residues, and the higher the demand requirements for the end product, the higher the amount of rejected material. The reason for this is that the selectivity of the deinking process is limited; therefore, some valuable components are also lost in reject streams. The rejection of usable components affects the economics of recycled paper production. As the cost of waste disposal continues to increase, this issue is becoming more and more severe. This paper summarizes the current state of the resource efficiency in recycled pulp production and provides information on the volumes of rejected streams and the usable material within them. Various means to use these reject streams are also discussed, including the main findings of a recent thesis by the main author. This review summarizes current internal and external use of reject streams generated in the deinking operations.

Cracking at the fold in double layer coated paper: the influence of latex and starch composition

TAPPI Journal ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 93-99
Author(s):  
SEYYED MOHAMMAD HASHEMI NAJAFI ◽  
DOUGLAS BOUSFIELD, ◽  
MEHDI TAJVIDI
Keyword(s):  
Mechanical Properties ◽  
Double Layer ◽  
Starch Content ◽  
Single Layer ◽  
Double Layers ◽  
Coated Paper ◽  
Coated Papers ◽  
Coating Layers ◽  
Scanned Images ◽  
Packaging Paper

Cracking at the fold of publication and packaging paper grades is a serious problem that can lead to rejection of product. Recent work has revealed some basic mechanisms and the influence of various parameters on the extent of crack area, but no studies are reported using coating layers with known mechanical properties, especially for double-coated systems. In this study, coating layers with different and known mechanical properties were used to characterize crack formation during folding. The coating formulations were applied on two different basis weight papers, and the coated papers were folded. The binder systems in these formulations were different combinations of a styrene-butadiene latex and mixtures of latex and starch for two different pigment volume concentrations (PVC). Both types of papers were coated with single and double layers. The folded area was scanned with a high-resolution scanner while the samples were kept at their folded angle. The scanned images were analyzed within a constant area. The crack areas were reported for different types of papers, binder system and PVC values. As PVC, starch content, and paper basis weight increased, the crack area increased. Double layer coated papers with high PVC and high starch content at the top layer had more cracks in comparison with a single layer coated paper, but when the PVC of the top layer was low, cracking area decreased. No measurable cracking was observed when the top layer was formulated with a 100% latex layer.

Functional surfaces produced by foam coating

TAPPI Journal ◽  
2016 ◽  
Vol 15 (8) ◽  
pp. 515-521 ◽  
Author(s):  
EIJA KENTTÄ ◽  
HANNA KOSKELA ◽  
SARA PAUNONEN ◽  
KARITA KINNUNEN-RAUDASKOSKI ◽  
TUOMO HJELT
Keyword(s):  
Life Time ◽  
Silica Coating ◽  
Foaming Properties ◽  
Coated Paper ◽  
Paper Properties ◽  
Foaming Agent ◽  
Foaming Agents ◽  
Size Stability ◽  
Stability Measurement ◽  
Standard Paper

This paper reports experiments on silica coating formulations that are suitable for application as a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nanosilica dispersions, the critical micelle concentration, foam half-life time, and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nanosilica-coated paper. The surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.

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