Aesthetic appearance

Decorative. Titanium nitride has a golden color and is used extensively to coat steel and cemented carbide substrates for watch cases, watch bands, eyeglass frames, etc. It provides exceUent scratch resistance as weU as the desired aesthetic appearance, and it replaces gold coatings used previously. 

Other fibers blended with polyesters in numerous blended fabrics requke alternative methods of preparation. Generally, the scouring and bleaching procedures used for these blends are those employed for the primary component of the blended fiber or for the component that most influences aesthetic appearance. 

As with textiles the principal reasons for the coloring paper are for aesthetic appearance and utihtarian purposes. Aesthetic appearance includes colored background for printed material, colored writing papers, colored household products to harmonize with interior decor, and many other diverse uses dictated by individual tastes. Utihtarian purposes include identification of multicopy forms, identification of manufacturer or marketer of specific materials or products, opaqueness or hiding power of packaged material, or to control consistency of paper manufactured from various colored raw materials. 

Painting of all metallic surfaces of a switchgear or a controlgear assembly is an essential requirement to provide it with an aesthetic appearance, on the one hand, and to prevent it from rust and corrosion, on the other. Painting serves these purposes by providing the machine with a hard and longer-lasting metallic surface. We describe briefly, the basic procedure to paint and test painted surfaces. In the discussion, we have laid more emphasis on MS sheet-metal surfaces as these are more typical. 

Labels for soft drink bottles, shampoo bottles, plastic food containers and the like, require high adhesion to materials like polyester and polyolefins. Once applied, the adhesive may have to withstand repeated flexing, freezing, water and other fluid spillage, while maintaining aesthetic appearance. 

Formation is important not only because of its impact on the aesthetic appearance of the sheet but also because it adversely affects both mechanical and optical properties. A more uniform mass... 

Polymers used as dental materials must meet several stringent requirements. Dental restorative materials must be nontoxic, have aesthetic appearance, and good adhesive and mechanical properties. In addition, these materials must exhibit long term stability in the presence of water, enzymes, and various oral fluids, and withstand thermal and load cycles. Finally, a desirable dental restorative materia] should be convenient to work with at the time of application. 

Fifteen years ago, when wood-plastic composites were first introduced many people predicted that this process would solve the problem of wood dimensional stability and great claims were made for its future use. Now that the physical properties of wood-polymer composites are better understood, specific commercial products are being produced which take advantage of the desirable aesthetic appearance, the high compression strength, increased hardness and abrasion resistance and improved dimensional stability. Future use of wood-polymer composites will depend upon the imagination of the producer and the market place. 

Wood sheets, which are obtained by unrolling steamed wood rods with ablade, can be bound together to form thicker boards. The main characteristic of these sandwiches is the alternation of the fibre orientation by 90° in every layer. The anisotropy of the whole board is thus limited in the length and in the width. Three, five or seven layers are usually used in these panels, called plywood. Often, the inner layers of plywood are replaced by OSB (see below) to reduce costs. The two outer layers of wood sheets ensure the aesthetic appearance of the panel. 

The most visually obvious attribute developed in plastics formulation and compounding is the aesthetic appearance observed in the final fabricated part. Although the visual acceptability of the component may involve characteristics such as gloss and the absence of surface imperfections, color is one of the most evident and... 

Chemical analysis of practically every type is used extensively in archaeological chemistry. There are of course important diflFerences between the typical problems which arise in analytical laboratories and those of archaeological chemistry. Ideally in studies of archaeological artifacts the analytical technique should be nondestructive, and if this is not feasible, only a very small sample is to be removed. If a sample is to be removed, a concerted eflFort should be made not to diminish the object s aesthetic appearance. For example, it may be necessary to drill at the bottom of a bronze vase where the damage is not visible. In the case where sample-taking is not allowed, the artifact must be accommo-... 

Mould fungi can be broadly classified as being saprophytic organisms that utilize simple sugars and other carbohydrates derived from cell lumens. Since they do not attack the wood cell wall structure they do not cause significant decreases in wood mechanical properties. Moulds are noticeable as fuzzy or powdery growths with colours ranging from white to black. They primarily affect the aesthetic appearance of the wood. 

This sector is a substantial consumer of plastics and fillers. The major requirements include low weight, rigidity, impact strength, aesthetic appearance, dimensional stability, high heat distortion temperature, UV resistance, and flame retardancy. Again, fillers can contribute to the performance of these products. The major polymers used are ABS, POM, PPO, and PS. Lately, new advances in PVC blends have improved the heat distortion temperature and, they too, are finding applications in... 

The simplest and most widespread use of plantings is to cover part or all of a slope with small trees, such as pine, oak, or willow, and/or low ground cover. This is most often done on slopes which are relatively stable by themselves, or can be expected to remain stable until the plantings can take root on their own. Slopes adjacent to highway overpasses and bridge abutments are often treated in this fashion, also creating a more aesthetic appearance than stone block or concrete. 

Designers have to ensure that a large number of parameters are correct if their product is to be both satisfactory in use and marketable. These parameters may include mechanical strength, chemical resistance, aesthetic appearance, etc. In contrast, a product may never be involved in a real fire, but if the product is exposed to a fire and its fire performance is inadequate, then the result may be loss of life and/or property. For this reason, it is essential that fire behavior should be included in all design criteria lists. It may subsequently be eliminated if it is considered to be irrelevant, but if it is ignored by oversight then the path may be open for disaster. 

Structural adhesives can add value to finished products in applications such as metal bonding in locker doors on coaches and rub rails on buses, where both aesthetic appearance and bond strength are critical. Structural integrity is also vital in the marine industry the overall weight of the boat is reduced by bonding in systems such as stringer grids. VOC emissions can be reduced as well. 

The FRP cladding panels of buildings do not have to support large stresses, because a steel framework can do this, but in the same way as with boat hulls, their aesthetic appearance and moisture barrier qualities must not be allowed to deteriorate. Often they have been subject to colour changes caused by the action of ultraviolet light on fiame retardant additives in the resin. 

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