Back-coating Applications

Over the last few years, direct coating with scrim lock has replaced pan apphcation as the preferred method for back-coating carpet. The major advantages associated with direct coating are  

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Back-coating is the major area where bromine-based flame-retardant compounds are used for textiles. This technique is applied primarily in applications such as upholstery and wall coverings. The system would comprise an FR additive with a latex binder, the latter often based on acrylic or ethylene vinylacetate. Use of vinylidene chloride-modified acrylics reduce the amount of tire-retardant additive required. 

Vinyl acetate [108-05-4], (VAc), CH2=CHOOCCH, the ethenyl ester of acetic acid, is primarily use for the manufacture of poly (vinyl acetate) [9003-20-7] (PVAc) and vinyl acetate copolymers. Poly(vinyl acetate) homo- and copolymers are found as components in coatings, paints and sealants, binders (adhesives, nonwovens, construction products, and carpet-backing), and miscellaneous uses such as chewing gum and tablet coatings. Applications have grown over the years in a number of areas (1—4). 

Furniture fabrics are back-coated with non-slip finishes, often with polymer-based ones. The formulation may include thickeners and flame retardants. Back-coating is mostly achieved by nip-padding or using a doctor (squeegee) or by foam application or spray techniques (for a lower add-on). Another one-side application is rotary printing (screens with regular perforation). 

Suitable for a wide variety of nonwoven end-use applications. SUNCRYL CP-75 is also used as a back coating binder for stabilizing corduroy woven fabrics. SUNCRYL CP-75 is a soft, selfcrosslinking vinyl acetate-acrylic copolymer emulsion which forms a soft, flexible film. 

MAJOR PRODUCT APPLICATIONS carpet backing, coatings, PU-foam, pultrusion, laminates, composites, conveyor belts, cables, flooring, chipboard, tub and shower stalls, coated fabrics, electrical products, polishing, exterior cladding, tiles, synthetic marble, adliesives, coatings and sealants, sheet molding compounds, toothpaste... 

Results are presented of studies of three products for healthcare applications which include anti-microbial finishes or additives in the product. These products are upholstery fabrics coated with a clear coating that includes an anti-microbial additive, a fluid barrier system that involves a 2 mil film laminated to the back of an upholstery fabric that incorporates an anti-microbial additive in its adhesive system, and wallcoverings that include an anti-microbial additive in the back-coating. 

Back coating n. The application of latex or adhesive to the back of a carpet to anchor the tufts, usually followed immediately by addition of a secondary backing material... 

Using factorial analysis, samples of the mohair/silk (MS) fabric were variously treated with a selection of flame retardants, back-coating formulations and adhesive, mounted on a typical aramid honeycomb board specimen, and each composite was tested using cone calorimetry at the preferred heat flux of 50 kW (shown to be equivalent to the 35 kW m flux used in the OSU calorimeter). 1 An optimum combination of flame retardant, back-coating and adhesive at specific application levels was found to yield the lowest heat release values, and this system was applied to each of the above six fabrics. Testing in both the OSU at 35 kW m heat flux and at 50 kW m" in the cone calorimeter gave the results for peak heat release in Table 4.5 below. From this it is seen that all fabrics have PHRR values < 65 kW m" and that OSU and cone calorimeter results are equivalent. 

An example of the contribution of polar interactions between an acrylic PSA and a substrate is shown in Fig. 6. By copolymerizing iso-octylacrylate and acrylic acid, using a monomer ratio of, respectively, 95/5 and 90/10, two otherwise identical PSAs were made. The PSAs were laminated to both sides of a foam core to make an attachment tape as used in the automotive industry for the application of body side moldings to a car. One side of the foam tape was laminated against an aluminum foil backing. The other side was laminated against an automotive paint-coated panel to make the final test sample. The test sample was allowed to... 

One of the shorter-term applications is the use of protective films on vehicles for shipment from the manufacturer to the dealers. These protective films are typically polyolefins coated with a removable adhesive for easy application and removal without leaving hard to clean adhesive residue on the vehicle. Several adhesives have been reported for this type of application, including the less common polyisobutylene-based PSAs [139]. A possible advantage of combining a polyolefin backing with a polyisobutylene-based adhesive is that the protective... 

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