Yarn designation

Textile glass—Continuous filament yarns, staple fibre yarns, textured yarns and rovings (packages)—Determination of linear density Textile glass—Yarns—Designation... 

Yarn quality n. Various grades of yarn designated by the producer with respect to performance characteristics, e.g., first quality, second quality, etc. 

Comb copolymers, 7 610t Combed yarn, 11 178 Combes synthesis, of quinolines, 21 189 Combicat, 7 387, 392 Combinational libraries, 7 382 characterization, 7 404-405 composition gradient libraries, 7 407 design, 7 399-400 fabrication, 7 414-419 temperature gradient libraries, 7 407—408 thickness gradient libraries, 7 406 Combination electrodes, 14 30 Combination vaccines, 25 504-505 Combinatorial biology, 16 414 Combinatorial biosynthesis, 15 301-302, 305... 

To make cut pile carpets, two strands of BCF yarns are twisted together and heat-set with steam using a Superba heat setting machine at 135-145 °C or at 175-195 °C when heat-set with super-heated steam in a Suessen. An experimental design experiment [94] showed the higher the heat set temperature, then the lower is the bulk of the final carpet, but there is an increase in the tip definition and walk performance. The tufted carpets are then dyed with disperse dyes at atmospheric boil [95] in a continuous or a batch process. PTT carpets showed excellent resiliency in walk test experiments, equivalent to a nylon and much better than both PET and polypropylene, had lower static charge of <3.5 kV, and were resistant to coffee, mustard, betadine, red acid dyes and other stains [96],... 

ISO 11567 1995 Carbon fibre - Determination of filament diameter and cross-sectional area ISO 13002 1998 Carbon fibre - Designation system for filament yarns... 

Related in part to these work practices developments, the mills also instituted medical surveillance programs designed to identify those few individuals with a cotton dust sensitivity so that they might be considered for assignment outside the yarn processing areas( 3). 

Bundle Preparation. Packages of multifileiment yarns are backwound to prepare bundles necessary for the manufacture of a reverse osmosis module. A proprietary winder for this operation has been designed and constructed at Albany International Research Co. This device is capable of helically winding multifilament yarns into bundles around a mandrel. This is done in a manner such that the resulting bundle has uniform cylindrical dimensions and uniform fiber density. This minimizes channeling and optimizes exposure of membrane surface area. 

Basic yarn components along with conventional filaments/yarns constitute the feedstock of the weaving process. Selectively fed into a loom and manipulated through an advanced textile manufacturing process, this feedstock can be woven into a complex variety of designs that result in a structurally sound, environmentally compatible fabric that provides electrical and mechanical functionality. Electronic circuits can be formed from the selective interconnection of fibre components during the weaving process. 

Twist in the yarn Most yams have filaments that are twisted. The main reason for this is that an untwisted yam is difficult to weave or knit. Two types of twists can be given to the yam, a counterclockwise twist or S twist and a clockwise twist or a Z twist. Figure 2.1 shows these twists. We can also make a ply yam by using reverse twist directions. This serves to balance out residual stresses. We can also twist together two or more plies to make a cord. Commonly, yam designation on a fiber spool provides information such as name, linear density, number of fibers and fiber type. 

Special blend of softeners and lubricants designed to optimise the balance of frictional properties with respect to softening, stitch lubrication, raising of all fibres. Facilitates re-winding and knitting of cotton or blended yarns. 

Opaque free flowing aqueous dispersion designed for sizing continuous filament nylon yarns to be woven on water jet looms. Highly efficient product for most difficult fabrics such as computer tapes. 

This material is a white mineral oil compound designed for use in the coning of oils and possesses anti-static properties as well as self-contained emulsifiers for ultimate removing from the processed yarns. 

Effective coning oil designed for use on low denier nylon and polyester yarns. 

T-C 9080 is a non-flammable, non-toxic spot remover designed for application to soiled fabrics during the inspection. T-C 9080 is also most effective as the detergent in a scouring bath for knit goods to facilitate removal of yarn lubricants. 

Concentrated lubricant designed for heat set and unheat set yarns. Aids in weight retention--anionic. 

POMOSOFT 54 Base is a highly concentrated cationic softener, designed primarily for use on acrylic yarn or fabric. It is a semi-soft waxy solid, and needs to be diluted before adding to the dye machine or pad bath. 

Most of the single-fiber yarn pseudomorphs, green in color and with zero twist, designated 0, ranged from 39 to 50 xm in size however, one... 

Not surprisingly, paired-fiber yarn formations of both colors ranged from 80 xm, a dark yarn with 0 twist, to 107.8 xm for another dark yarn with S-twist, designated ( ). All the green, paired-fiber yarn formations measured approximately 100 (Jim in size. 

For all of these formations, at least two different sets of elements, perpendicular to each other, interacted. In all of the fabric type areas, eccentric yarn shapes moving in a curvilinear fashion were identified. No selvages were observed. Single yarn forms do turn back into the formations, but there is no consistency to the movement. Bearing in mind that no positive identification of warp and weft can be made without a selvage, the analyst used the terms system A and system B to designate those sharing a rectilinear relationship. System C indicated yarn shapes that are present in the area but do not interact rectilinearly. 

Moisture determination in connexion with large-scale yarn purchasing is usually carried out in specially-designed conditioning ovens. These are not commonly required by dyers and finishers. It is, however, often desirable to carry out quick moisture-content determinations for routine process control. The small, rapid regain apparatus shown in Fig. 2.14 is suitable for this. It consists of an air heater and a blower which impels a stream of hot air over the sample to be tested. 

Hanks are mercerized on a machine of the type illustrated in Fig. 3.15, although there are many other designs. The hanks, which have been scoured previously, are placed over arms which apply tension. They then rotate the yarn, at the same time themselves moving in an arc to immerse the cotton in a caustic soda solution of specific gravity L3, equivalent to 27 per cent concentration. After a few minutes the arms move to another position, where the bulk of the alkali is rinsed out before tension is removed. A further movement accompanied by relaxation of stretch permits removal of the hanks, which are then rinsed in acetic acid and thoroughly washed T with water. A mercerizing machine for open-width cloth is shown in g. 3.16. 

In the fragment reaction, the ability of puromycin to mimic the aminoacyl-tRNA in the peptidyl transferase reaction was exploited to measure catalytic activity. Puromycin was subsequently used to design a transition-state analog for the peptidyl transferase reaction, known as the Yarns inhibitor, in which it is linked to the oligonucleotide CCdA by a phosphoramide group [73]. In a complex with the 50S ribosomal subunit, the Yarns inhibitor was used to define the catalytic site in a high-resolution crystal structure. No protein was found within 18 A of this site [74]. This result demonstrated conclusively that the catalytic activity indeed resides in the ribosomal RNA. 

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