Paper coating types

Dry cells have been well-known for over 100 years and form the technical basis of today s modern dry cell industry. Zinc carbon cells are the most widely used of all the primary batteries worldwide because of their low cost, availability, and acceptability in various situations. The two major separator types ever used or in use are gelled paste and paper coated with cereal or other gelling agents such as methyl-cellulose. The paste type is dispensed into the zinc can, and the preformed bobbin is inserted, pushing the paste up the can walls between the zinc and the bobbin. A typical paste electrolyte uses zinc chloride, ammonium chloride, water, and starch or flour as the gelling agents. The coated-paper type uses a special paper coated with flour, starch, regenerated cellulose. 

Commercial casein is usually manufactured from skim milk by precipitating the casein through acidification or rennet coagulation. Casein exists in milk as a calcium caseinate-calcium phosphate complex. When acid is added, the complex is dissociated, and at pH 4.6, the isoelectric point of casein, maximum precipitation occurs. Relatively little commercial casein is produced in the United States, but imports amounted to well over 150 million lb in 1981 (USDA 1981C). Casein is widely used in food products as a protein supplement. Industrial uses include paper coatings, glues, plastics and artificial fibers. Casein is typed according to the process used to precipitate it from milk, such as hydrochloric acid casein, sulfuric acid casein, lactic acid casein, coprecipitated casein, rennet casein, and low-viscosity casein. Differences... 

They consist of a suitable label paper coated on the reverse side with a permanently tacky adhesive which is in contact with a backing paper that protects it prior to use. The backing paper is coated with a special release coating which permits the label to be removed easily. Labels may be provided in reel or sheet form both can have the label laid on , i.e. the non-printed area has been cut and removed. Sheet label forms also exist as split top type—both printed and non-printed area is present but printed area is split away so that it can be removed. Split back type has the backing paper split or cut so that it can be removed. (Applies to larger sizes.)... 

Numerous papers, usually of the single face coated types, are now available with a wide range of pressure sensitive adhesives. These adhesives may be ... 

The term soy proteins typically refers to processed, dry soybean products other than animal feed meals. Many types of protein products are produced for use in human and pet foods and in milk replacers and starter feeds for young animals. Some soy protein products are also used in biobased products (e.g., plastics, adhesives, paper coatings), and others are being a ressively researched by industry and public-sector research institutions, especially recendy as petroleum prices rise (Johnson, 1992a ISU, 1994). The many soy protein products and their uses are shown in Fig. 19.3. 

Uses Emulsifier, antistat solubilizer for vitamin oils, essential oils, balsam, and tar preps, in cosmetics emulsifier for petrol, oils, fats, soivs., and household waxes solubilizer for flavors emulsifier for paraffin type waxes for use in textile and paper coatings lubricant antistat food pkg. adhesives, paper food-contact defoamer and emulsifier RegMory FDA 21CFR 172.515,172.836,173.340,175.105,176.180, 176.210,178.3400 DOT nonregulated Properties Yel. vise, liq/paste disp. or sol. in most soivs. and oils disp. in water b.p. > 300 F HLB 15.0 sapon. no. 45.0-55.0 hyd. no. 81.0-96.0 flash pt. (COC) 300 F nonionic 97% cone. 

Uses Epoxy-a lic in photo resists, solder masks, conformal coatings, overprint varnishes, paper coalings in clear coatings-type applies. Features Enhanced impact resist., flexibility, and resist, to thermal shock Properties Gardner 7-8 color m.w. 1500 vise. 5800 cps (65 C) acid no. 2.4 tens. str. 2700 psi tens, elong. 38%... 

Chem. Descrip. Micronized synthetic wax CAS 8002-74-2 EINECS/ELINCS 232-315-6 Uses Abrasion resist, aid, slip agent in solvent-based flexographic and gravure inks, paste inks, paints, coil coatings, paper coatings, and other types of surf, coatings... 

Chem. Descrip. Polycarboxylic acid type Uses Dispersant for calcium carbonate, pigments for paper coating and syn. pulp vise, reducer dispersant for paints, pigments, inks Properties Liq. anionic 40% act. 

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