A. That is to say, the coverage coefficient of the fabric or the tightness of the fabric, the tightness is small, and there are gaps between the yarns; the tightness is large, the gap between the yarns is small, and there is superposition phenomenon. Tightness unit:% ET, or zonal compactness (EW):
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B. simple calculation of grey compactness:
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Calculating instructions: For the calculation of the fraction under the root sign, the final data is directly opened to the root sign and then equaled, which is the final calculation result.
For example: C30× C30 165× 100 63” on board tightness is 48.3.
C. chooses looms according to different machine tightness (A):
200 thousand -40 / TOYOTA / Tianjin Tian Ju
Flat tightness range: 40-42
2/1 twill tightness range: 42-43
2/2 or 3/1 tightness 43-45
Satin tightness 45-47
400 thousand -60 ten thousand / heavy loom (
Flat tightness range: 42-44
2/1 twill tightness range: 44-46
2/2 or 3/1 tightness 46-48
Satin tightness 48-50
If the above tightening range is exceeded, we should use the Neill or imported rapier loom.
Super heavy loom 800 thousand / Taiwan / German German Neill loom
Restricted by equipment, it is impossible to expand fabric tightness without limitation. In contrast, the weaving cost of heavy looms is higher than that of ordinary looms, with pedal looms 3.8 minutes/weft-4 minutes/weft and jacquard looms 4 minutes/weft-4.5 minutes/weft. Although some kinds of looms with high tightness can also be weaved, the quality level is far inferior to that of heavy-duty looms, just as strong people can pull heavy cars fast and steadily, and weak people can pull cars slowly and not far away.
