Filament number

Samples. Cuproammonium cellulose fibers made by Enka Glanzstoff AG were used in the study. The fibers designated Cuprophan HDE, (Table I) are Intended for application in hemofiltration and generally are characterized by having 5 to 10 times the hydraulic permeability of similar fibers made for hemodialysis. Fiber samples were tested in dog-bone shaped experimental dlalyzers having fiber lengths of 20.5 cm and filament numbers of 2940, 5870, and 8800. With a nominal inside fiber diameter of 0j0215 cm, surface areas of these devices were... 

For the various POY yams textured at constant tension to a fixed tenacity and elongation target (3.3 grams per denier tenacity 18% elongation), the number of broken filaments generated by the texturing operation decreases with Increased yam stmcture (Table 1). Interestingly, the best POY structure versus PTY broken filament number correlation Is achieved with the reciprocal product of amorphous orientation (fa) and crystalline content (x) ... 

Chan, A.Y., Raft, S., Bailly, M. et al. (1998). EGF stimulates an increase in actin nucleation and filament number at the leading edge of the lameHipod in mammary adenocarcinoma cells./. Cell Sci. Ill, 199-211. 

Sample Type of weave Fineness of filament in dtex Cross section of filament Number of filaments in the yarn Fineness of filament yarn in tex Yarn density/ 10 cm Fabric density/8/... 

Yarn type Linear density, dtex/filament number Tenacity, Ntex Breaking strain, % Hot air shrinkage at ISO C, %... 

Digit Number of broken filaments Number of detected broken filaments... 

Different PVDF fibres (round and snowflake shaped) were obtained with parameters listed in Table 1. These fibres differed in filament number, draw ratio and draw temperature. The name indicates filament number, drawing (POY not drawn, FDY draw ratio 2,5) and draw temperature (temperature given, FDY without temperature indication is drawn at standard temperature of 70 °C). These fibres are discuss in the following. 

Name Cross section Total yarn count Idtaxl Filament number raw ratio m Draw temperature [ Cl... 

One trend was observed comparing the drawn PVDF multifilaments with di f ent filament numbers. In Figure 10 A the results of cell attachment onto PVDF fibres after 4 hours are shown. Significant differences in cell attachment were observed between the fibres fl7 FDY (diameter 28 pm) and f34 FDY (diameter 20 pm) as well as between fl7 FDY and f72 FDY 70 C (diWeter 13 pm). CHO-GFP4 cells attached better on PVDF fibres with a finer single filament diameter. A significant difference between 34 and 72 filaments was not observed. To conclude, filament diameter of 20 pm and smaller as well as pore areas associated with this diameter seemed to enhance cell attachment. 

Figure 10 Comparison of cell attachment on PVDF fibres with different filament numbers and thei re diameter (A) and attached CHO-GFP4 cells on PVDF fibre (B)...

Filament number The linear density of a filament expressed in units such as denier or tex. 

Filament number corresponding to the scan length and scan speed of the laser for the... 

The bottom of the assembly is the spinning plate 5-30 mm thick. The number of holes varies enormously. A hosiery yarn may have one or three filaments, a carpet yarn 60 filaments, an industrial yarn 350 filaments. For low filament numbers per... 

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