Pigments molding

Becoming more popular for hot-frUed food containers and other packaging applications, cPP that is also tinted provides some additional eye-catching qualities. To understand better how to pigment this material, researchers at BASF s GPU Performance Chemicals compared the performance of dozens of standard pigments molded in cPP in 2-mm plaques, measuring the samples haze, clarity, and color quality. They noted a number of trends and conclusions ... 

In particular, molded products covered with metallized films can be highly reflective and lack the flow- and weld-line inconsistencies in metal pigment distribution that can be found in internally pigmented moldings. The films are usually more durable than paint, with lower system costs and a lower environmental footprint as well. However, part compatibility depends on the process and pressures required to form the part and apply the film [6-3]. 

In the automotive market, appearance is often a significant functional and aesthetic requirement influencing polymer selection. For example, with large exterior body parts, such as fascia and body panels, a surface finish that matches the adjacent sheet metal is an absolute requirement dictated by consumer expectations. This consumer preference for Class A exterior surface quality has several times thwarted attempts to eliminate current painting processes, which tend to be costly and environmentally unfriendly. Pigmented, molded-in-color (MIC) fascia and claddings have only been successful, at this time, on lower line and... 

Plastics. Lecithin (0.5—1.5%) is used for pigment dispersion and as a shp or release agent. It also may be sprayed on molds. It has surfactant effects in organosols and plastisols (see Surfactants). 

Gel coats are pigmented polyester coatings appHed to the mold surface and are an integral part of the finished laminate. Gel coats are used widely on hand lay-up and spray-up parts to enhance surface aesthetics and coloration as weU as to provide an abrasion-resistant waterproof surface that protects the underlying glass-reinforced stmcture. 

The major uses of aniline are in the manufacture of polymers, mbber, agricultural chemicals, dyes and pigments, pharmaceuticals, and photographic chemicals. Approximately 67% of the wodd production of aniline is used in the manufacture of rigid polyurethanes and reaction-injection-molded (RIM) parts for the constmction, automotive, and durable goods industries. 

Specialized training is an absolute requirement for technical service personnel. A typical example is a person involved in supporting a polymer for which the use is the manufacture of rotationaHy molded consumer products. The technical service person is expected to be reasonably familiar with topics such as polymer rheology evaluations, gel-permeation chromatography, rotational mol ding, color science, regulatory requirements for use, mechanical and photochemical behavior of the pigmented polymer, optics, and so forth. Expertise of this variety caimot be expected to be obtained without careful... 

Pellets for injection-molding, extmsion, and blow-molding appHcations include mineral-filled, glass-filled, pigmented, and flame-retarded grades. 

Blumen blatt, n. petal. erde, /, garden mold, gelb, n. any yellow flower pigment. kohl, m. cauhflower, seite, /. (Leather) hair side, staub, m. pollen. tee, m. imperial tea. topf, m. flower pot. 

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