Graphic papers

INERAS (1998) LCA graphic paper and print products (Part 2 Report on the industrial processes assessment). An environmental project of Axel Springer Verlag, STORA and CANFOR. Scientific consultant INFRAS, Zurich... 

The primary sources for the mineral oil contamination in secondary fibre-based packaging materials are the coldset inks from newspapers because offset printing is the dominating printing process for this type of graphic paper product in Europe. Offset coldset inks consist of up to 30% of mineral oil as solvent. In general, offset inks are available which are based on mineral oil-reduced or mineral oil-free... 

The column is subsequently washed with about 50 ml of distilled water a drop of the final washings should give a negative test for sugar when applied to a piece of chromato graphic paper and sprayed with aniline phthalate reagent after drying the paper. When this is the case the solution is evaporated in vacuum down to a volume of about 5 ml. 

Uses Defoamer for emulsion paints, emulsion polymers, syn. renderings, food pkg. adhesives/coatings/paper, coaling colors (graphic papers), wastewater treatment Features Prevents and combats surf, foam Re latory FDA 21CFR 175.105,175.300,176.200,176.210 BGAcom-pliance... 

In 2002 graphic papers accounted for 43% of total paper production. This included newsprint (37 x 10 t) and other printing and writing papers (104 x 10 t). The production of packaging papers was 153 x 10 t, and that of the remaining papers and boards was 37 x 10 t (Table 1.5). 

Consideration of recovered paper use and recovery of used paper products requires definitions. Statistical definitions can be related to the world, a continent, a country or a certain region (e.g. Europe) or to a certain category of paper products (e.g. graphic papers or newsprint). Differentiation is given by three statistical parameters ... 

Utilization rates for different countries should not be compared without further comment. It is important to know the structure of the production program of the different national paper industries in the main product categories of packaging papers and board, graphic papers, household and hygiene papers as well as specialty papers because the utilization rates for these product segments differ significantly. 

High grades comprising predominantly white Hghtiy printed graphic papers and board (very often woodfree), recovered by separate collection and therefore relatively clean. 

Newspapers, weekly and monthly magazines, brochures and office papers are used as raw material to produce graphic papers, tissue or the top ply of white board. In the deinking process first the printing ink has to be detached from the paper surface then the released ink has to be removed from the pulp slurry, either by flotation or by washing or by a combination of the two. Whereas in Europe flotation is most commonly used and washing is only used for special deinked pulp (DIP) qualities, in North America washing is more common. 

Systems for Fiber Stock Preparation l97 4.3.2.1.1 System for Wood-containing Graphic Papers... 

Table 4.2 Quality parameters of European ONP/OMG mix and DIP for different wood-containing graphical paper grades.

System for Woodfree Graphic Paper Grades and Market DIP... 

Woodfree recovered paper, such as MOW, CWF and/or UWF, is used as raw material to produce woodfree DIP grades for tissue, woodfree graphic paper grades or market DIP as a chemical pulp substitute. Table 4.4 shows the raw material quality parameters and the quahty demands on woodfree DIPs for named applications. 

R. Rienecker, Screening of recovered paper stock for the production of graphic papers. 

Graphic paper grades 8-10 decreasing product quality... 

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