Mixed fabrication

The antiozonant should possess adequate solubiUty and diffusivity characteristics (19). Siace ozone attack is a surface phenomenon, the antiozonant must migrate to the surface of the mbber to provide protection. The antiozonant should have no adverse effects on the mbber processiag characteristics, eg, mixing, fabrication, vulcanization, or physical properties. 

Quantitative Determination of the Different Fibres in Mixed Fabrics.—The aim of this determination is to ascertain the quantities of the various fibres constituting a fabric, e.g., the quantities of wool and cotton in a flannel, or the quantity of silk in a mixed fabric containing this fibre, etc. 

Mixed fabric of cotton and artificial silk with a cellulose basis ... 

Mixed fabrics containing natural silk and artificial silk based on either cellulose, or nitrocellulose or viscose. 

A. Mixed fabric containing cotton, wool, natural silk and artificial cellulose, nitrocellulose or viscose silk. 

Table 7.2 Examples of Garments Made from Cotton and Cotton Mix Fabrics...

Currently, potentially hundreds of different combinations of natural and synthetic yarns are available to manufacturers to weave or knit into cloth. Early 21st-century clothing comprises a broad mix of purely natural, purely synthetic, and mixed fabrics. Fabric content will influence response of the garment to different depositional environments and will likely lead to differential preservation of the garment sets. The latter half of the 20th century saw the development of unisex clothing items in which the general style and... 

Details for carrying out lecture demonstrations of (a) dyeing a mixed fabric blue and yellow simultaneously from the same bath, and (b) separating, by flotation, red mercuric sulfide, followed by green cupric silicate from their mixture with sand, will be found in the first four editions of this book. The degree of selectivity shown, in chromatography, by cellulose, alumina, and silica also lends itself to demonstrations. 

The poor crease resistance of cotton fiber can be improved by treatment with resins, but it cannot be fully eliminated. Consequently, the use of mixed fabrics, especially with polyester yarn, is commercially preferred, for example, for shirts and, more recently, for underwear. 

Man-made leathers or poromerics, on the other hand, always consist of several layers—mostly two or three. For example, Corfam the first product of this kind, was made up of an upper moisture permeable polyurethane layer, a central layer consisting of a mixed fabric of 95% poly(ethylene terephthalate) and 5% cotton, and a lower layer of a porous poly(ethylene terephthalate) fleece bound by an elastomeric polyurethane binder. The product produced in... 

Post-consumer waste consists of six major polymers polystyrene (PS), low density polyethylene (LDPE), high density polyethylene (HOPE), polypropylene (PP), polyvinyl chloride (PVC) and polyethylene terephthalate (PET). These polymers are incompatible and form separate phases on mixing. Fabricated products made directly from comingled plastics have poor physical properties, and can compete only with treated lumber at a price of roughly 20% of that for the virgin plastics. When freed of hidden and actual subsidies, this form of recycling is believed to have a negative economic value. 

Composites are often constructed by bonding two materials together as in the laminating technique. In the case of synthetic leathers, called poromers, layers of different plastics are bonded together. Corfam, the first product of this type, consists, for example, of an upper layer of vapor-permeable polyurethane and a central layer of a mixed fabric consisting of porous 95% poly(ethylene terephthalate) fleece held together by an elastomeric polyurethane cord. The fleece is produced from fibrils (see Section 12.3.1). 

For example, surfactant systems have been changed to provide optimum performance. The introduction of new builder systems—enzymes, bleach activators, and new polymers for reduced soil redeposition—has also maximized soil removal from mixed fabric bundles during lower temperature washes in less wash water. In addition, new product forms such as concentrated liquids and powders with in-wash dosing containers have resulted in better usage and dispersion of detergent at low wash temperatures. 

The choice of soils was guided by our wish to quantify especially the builder effects thus mostly colored stains and greasy stains were deposited more on cotton than on polyester and mixed fabric. Enzyme-reactive or oxidizable soils made up only a small part of our sample, which appears as follows ... 

Features Very stable suitable for union dyeing of mixed fabrics effective in acid, alkaline and salt solutions... 

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