CATERPILLAR TRACK

Major polymer applications tires, flooring, conveyor belts, shoe products, sheet, tubing, tank and caterpillar tracks, sporting goods, toys, coated fabrics, automotive mechanical goods... 

A twin-walled corrugated pipe is shown in Fig. 1.14. The external wall is formed by applying an internal air pressure to the molten tubular extrudate (Fig. 13.2), which expands against pairs of mould sections—these move with the cooling pipe for some distance, then return on a caterpillar track to the die. 

The combination of these two techniques allows one to follow the fate of a recombinant virus as it is passaged via the MC-PIB technique through succeeding caterpillars. We have now gone through the creation and tracking of several different MC-PIBs, and it is clear from this that... 

X-ray results on the tubes showed that in both cases the crystal content was virtually all form I, indicating that possibly form II to form I conversion occurred on poling the lower draw ratio tube 1, where incomplete conversion to form I had been obtained on drawing alone. The densities of tubes 1 and 2 were 1.7887 and 1.7744 g cm 3 respectively, corresponding to form I contents of 38% and 35%. Slip had occurred between the caterpillar haul-off rubber tracks and the tubing, and consequently the true draw ratios measured by tube dimensions were less than the machine draw ratios obtained from the haul-off speeds. It is encouraging to note that the coefficients in... 

Monorail type essentially consists of a chain running inside a track (straight or bent) made of cold rolled sections with pressed steel straddle plates welded on them. The track segments are connected together with bolts. Every conveyor has a drive unit of the chain (caterpillar type)... 

Consider the caterpillar vehicle shown in Fig. 7.1. The draw bar force ( )) required to drive a unit of fixed track design (length, width, and tread arrangement) at uniform speed (V) over sand of a given composition, particle size and moisture content will be a function of the following variables ... 

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