Wood-free paper

White wood-free paper for laminates is usually one-side coated paper that has been super-calendered to make the outside (coated) surface less permeable. 

Uses Pigment for tinting wood-free papers and coatings, as well as for coloring grades requiring exc. lightfastness Properties Anionic Solithane 113 [Uniroyal]... 

The quahty of pulp depends on the kind of wood used. Softwood pulps have longer fibers, resulting in higher strength, whereas hardwood pulps with shorter fibers for instance produce a more uniform sheet. Paper containing only chemical pulp as the fiber component is called wood-free paper, i. e. it has only a low residual lignin content. 

Base papers for offxt films are predominantly wood-free papers that are used for making paper offset plates. 

Binding papers are tough, wood-free papers that are frequently embossed. 

Sterilization paper is a wood-free paper that, even when coated, can tolerate sterilization processes and is used for packing sterilized materials. 

Paper surfaces have unique complexities which can challenge surface modification efforts. Some are manufactured from chemical pulps and are known as wood-free papers. Other varieties of paper can be tree-free . The kraft process is the most widely practiced technique for pulp manufacturing and can produce particularly strong, unbleached paper products that are utilized for bags, but are often further processed into various plys to develop corrugated packaging. 

Uses Deinking agent, surfactant, dispersant for inks and other contaminants for newsprint and wood-free paper W.G.S. R-60 Z-5 [Werner G. Smith]... 

Paper made of pure cellulose is designated as wood-free paper, whereas that made from mechanical wood is called wood-containing paper. 

Many aldehydes are particularly fragrant. A number of flowers, for example, owe their pleasant odor to the presence of simple aldehydes. The smells of lemons, cinnamon, and almonds are due to the aldehydes citral, cinnamalde-hyde, and benzaldehyde, respectively. The structures of these three aldehydes are shown in Figure 12.21. The aldehyde vanillin, introduced at the beginning of this chapter, is the key flavoring molecule derived from the vanilla orchid. You may have noticed that vanilla seed pods and vanilla extract are fairly expensive. Imitation vanilla flavoring is less expensive because it is merely a solution of the compound vanillin, which is economically synthesized from the waste chemicals of the wood pulp industry. Imitation vanilla does not taste the same as natural vanilla extract, however, because in addition to vanillin many other flavorful molecules contribute to the complex taste of natural vanilla. Many books made in the days before acid-free paper smell of vanilla because of the vanillin formed and released as the paper ages, a process that is accelerated by the acids the paper contains. 

Photocurable coatings are widely used for metal, plastics wood and paper. Photoinitiated free-radical polymerization, however, can only be applied to vinyl monomers. The studies of Crivello have broadened the scope of monomers. In addition, photoinitiated cationic polymerization is not sensitive toward oxygen (air). Photoinitiated free-radical polymerization sometimes requires working in inert atmosphere in order to avoid the inhibition through oxygen1). 

Lithicoat P2F, T3F, T4A - grades for matt wood-free art paper which are the mixtures of talc, chlorite and dolomite... 

Chem. Descrip. Fatty acid/hydrocarbon blend Uses Defoamer for metalworking fluids, printing inks, latex paints, adhesives/caulks/sealants, wood stains, paper coatings, water-reducible systems, aq. resin and latex coatings, textile preps. food pkg. adhesives component of paper/paperboard in contact with aq./fatty foods Features Silicone-free high efficiency low cost Regulatory FDA 21CFR 175.105,175.300,176.170 Properties Off-wh. opaque low-vise, liq. sp.gr. 0.86-0.89 nonionic 100% act. 

The development of a solvent-free, environmentally friendly, ethylene-vinyl acetate dispersion, called EVA2615 M, which can be used for general applications and is particularly suitable for wood and paper applications, is reported. The emulsion polymerisation technology employed for the synthesis of this EVA is described and the properties of the EVA dispersions, which are particularly suitable for applications requiring water resistance, are presented. (Feica - 2000 World Adhesives Conference Exhibition, Spain). 

The TCF-pulp has no advantages over the ECF-pulp. Because all wood contains organic chlorine derivatives it is technically impossible to produce chlorine free paper from wood pulp. 

Fig. 2.9 I mpact of filler loading degree on some Important paper properties (pilot study, GCC as filler, wood-free furnish, 80 g m ) (source OMYA).

Overall, the wood-free uncoated paper grades mentioned are loaded mostly with primary (fresh) filler only. The coating base papers are filled with coating pigment... 

This is predominantly applied in wood-free uncoated paper, mechanical uncoated papers (usually in combination with kaolin), coating base papers, newsprint and white top liner board. 

This is also predominantly applied in wood-free uncoated paper, wood-containing uncoated paper (in combination -with kaolin), wood-free coating base paper, directory grades and white top linerboard [8]. In order to control porosity and burning rate, PCC is also widely used as a filler in the manufacture of cigarette paper. 

This is applied in wood-free uncoated paper in Asia Pacific, often combined with GCC. In Europe it is used in a few cases as a primary filler in wood-containing coating base paper and wood-containing uncoated paper, in the latter case in combination with kaolin. 

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