Higher production efficiency
According to calculations within different weaving mills, an average increase in efficiency of 3% has been achieved when using the Loepfe weft thread brake WeftMaster SFB-L.
3% increase of efficiency results in an additional profit of around USD 6250.-- to USD 9370.-- per year. Consequently the weft thread brake WeftMaster SFB-L is amortized within a very short time, i.e. in the present case within less than 4 months.
The following calculation is based on the details given from the weaving mills and for unknown parameters has been indicated an estimated value.
Calculation
| Number of weaving machines | 100 P7100 ES, 10 TW-11 ES |
| Speed/number of picks per minute | 420 |
| Production of 100'000 picks in | 4 hours / machine |
| Production of 600'000 picks in | 24 hours / machine |
| Number of weft breaks | 4 - 6 per 100'000 picks |
| Number of weft breaks | 30 per machine / 24 hours |
| Total number of weft breaks | 3000 per 100 machines / 24 |
| Total time consumption / repair of weft breaks | 3000 x 4 min. = 12000 min. = 200 hours |
Conclusion
By using the electronic weft thread brake WeftMaster SFB-L, the number of weft breaks can be reduced with at least 50%, which means:
| Reduction of weft breaks | instead of 6, only 2 - 3 per 100'000 picks |
| Total reduction of weft breaks | Ø 6000 min. / 24 h / 100 machines |
| Reduction of weft break repair time | Ø 100 hours on average |
| Resulting in an increase in efficiency of | Ø 3% on average |
Using the weft thread brake WeftMaster SFB-L pays off quickly and clearly ameliorates the quality of the fabric. Each weft break is a potential fault source (among others starting defects, formation of stripes etc.).
