STRIPPABLE COATING

Spray coating Spread coating Strippable coating Transfer coating Urethane coatings Vacuum metalizing... 

Other test media and techniques include post-emulsification penetrants, penetrants that form gels resistant to easy removal from entrapments, penetrants that concentrate dye constituents as their carrier Hquids evaporate during test processing, and penetrants that form strippable coatings in the developers. StiU other penetrant systems are formulated for use at abnormally low or high temperatures for special test appHcations. 

SemiadditiveMethod. The semiadditive method was developed to reduce copper waste. Thin 5.0 lm (4.5 mg/cm ) copper foil laminates are used, or the whole surface may be plated with a thin layer of electroless copper. Hole forming, catalysis, and electroless copper plating are done as for subtractive circuitry. A strippable reverse—resist coating is then appHed. Copper is electroplated to 35 p.m or more, followed by tin or tin—lead plating to serve as an etch resist. The resist is removed, and the whole board is etched. The original thin copper layer is quickly removed to leave the desired circuit. This method wastes less than 10% of the copper. 

The ether is also used in paint, varnish and lacquer formulations. A recent development is the use of ethyl cellulose gel lacquers. These are permanent coatings applied in a similar way to the strippable coatings. They have been used in the United States for coating tool handles, door knobs and bowling pins. 

Covering equipment and tools with a strippable coating that can be removed during decontamination. 

Plastic coating materials have been exposed to all lands of performances and environments to meet the many different requirements that exist in the many different applications. Included are corrosion and chemical resistant, fire retardant or non-flammable, strippable, heat resistant, electrical insulation, and others reviewed above (Chapter 2). What follows is information that highlight some of the properties and tests that influence the performance of coatings. 

Formulated with just the right degree of cohesive properties to adhere until no longer desired, these strippables can be used over a variety of substrates including polished or stainless steel anodized aluminum or prefinished metal that has been coated with thermoset finishes. 

Another example of strippable plastisol coatings is in the architectural field on stainless steel building panels. Here they offer surface... 

A class of coatings known as strippable coatings has been successfully used in Class 2 areas. These polymer materials are airless sprayed onto surfaces to provide a temporary barrier against radioactive contamination of the substrate. When saturated with contamination, the flexible material is pulled off of the surface by workmen and safely disposed of in 55 gallon drums. A new coat can then be applied. 

Filler-free formulations of two-component silicone rubbers crosslinkable by condensation or addition are utilized, with or without added solvent, for the coating of papers and plastic foil, optionally as an aqueous emulsion, e.g. for strippable paper for self-adhesive labels or packaging foil for bitumen. Vulcanization is carried out at high temperature (100 to 180°C), to attain as short hardening times as possible. 

Use Adhesives for textiles, paper, shoes, leather, tapes coatings for metal, paper, fabrics, carpets protective (strippable) for saturating paper, felt, book covers, tape, jute pads for dipping tire cords. Can be applied by spraying, spreading, impregnation, saturation. 

CAB-500-1, with only 0.5% hydroxyl, was designed for hot melt strippable coatings where moisture resistance was one of the primary goals. CAB-553, with a 4.3% hydroxyl, is alcohol soluble and especially useful in converting finishes requiring hydroxyl functionality. 

E-Z Peel. [Amax Industrie Prods.] Strippable coating. 

A coating is thin layer of material used to protect or decorate a substrate. Most often, a coating is intended to remain bonded to the surface permanently, although there are strippable coatings which are... 

The composition of vinyl chloride copolymers without functional groups influences their solubility behavior and compatibility with other paint binders. For example, copolymers with isobutyl vinyl ether or maleate esters dissolve in aromatic hydrocarbons, whereas copolymers with vinyl acetate merely swell in these solvents. Paint films formed from vinyl chloride copolymers without functional groups are heat sealable on account of their thermoplastic character. Since the films adhere poorly to nonabsorbing substrates such as metals, they are suitable as binders for strippable coatings. On account of their good chemical resistance, vinyl chloride copolymers are also extremely suitable as binders for exterior-use paints, traffic paints, and paper and foil lacquers their lack of taste and odor means that they can be used as pasteurization-resistant coatings for can interiors. 

Poly(vinyl alcohol) is used in the coating sector (e.g, as a thickening agent for aqueous systems), in adhesives, for finishing paper and cardboard, for coating paper, as a binder for strippable coatings, and as a protective colloid for dispersions. 

Uses Film-former, additive in hot melts, strippable coatings, inks, nail polishes, and lacquers for paper, plastic, and leather flow control agents in PU and polyester coatings food pkg. adhesives, coatings, paper/paperboard, cellophane, film... 

Uses Acrylic for tertrporary strippable coatings, low-VOC finishes Features Exc. water and UV resist., easily removable with alkali cleaners Properties Translucent disp. dens. 8.6 Ib/gal vise. 30 cps pH 7.4 add no.116 27%NVbywt. 

Chert). Descrip. Polyvinyl acetate-acrylic copolymer emulsion Uses Acrylic tor interior tiat and semigloss, exterior house paints, and strippable coatings... 

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