New KARL MAYER ML series upgrades the production of lace
On the one hand, standard lace is one of the essential ingredients in the successful repertoires of lingerie and clothing manufacturers. On the other hand, these delicate fabrics are among those textiles that are subject to the rapidly changing trends of the fashion world, which make increasingly stringent demands of the production technology. Above all, the demand is for the efficient production of even short runs, short changeover times and flexible patterning possibilities – and all this must be achieved for the lowest possible purchasing price.
KARL MAYER has reorganised the set-up of its ML series of machines so that it can optimally support those customers who operate on the fast-moving lace market with its extreme cost constraints.
As of the first quarter of 2012, all the electronic Multibar Lace machines can be bought from KARL MAYER China, and machine types ML 41, ML 34 and ML 46 will be available.
This shift in production should enable the KARL MAYER Group to network all its regional centres of excellence in the best possible way. Whilst the production, quality assurance and development departments at the company’s headquarters, with their many years of know-how and expertise in the manufacture of fully electronic Multibar Lace machines, will always be on hand, the Wujin site will profit from its geographical location close to the market and its advantageous business conditions.
All the models in the ML machine series are equipped with the KAMCOS computer platform, electronic guide bar control, and the high-performance, high-precision string bar system for patterning. These features place the Multibar Lace machines at the cutting edge of KARL MAYER’s lace production technology.
These three models in the low- and middle-bar sector can cater for the entire production spectrum typical of the mechanically controlled machines in the previous series, but they also offer a number of important advantages. The old type of multibar raschel machines were based on the principles of control by pattern chains or summation drives, and have been an established feature of the market for decades. The latest generation of Multibar Lace machines now enables the users to replace their existing technology with this new technology.
Above all, anyone buying the modern ML models will be able to profit from a much higher level of productivity for their investment compared to the mechanically controlled machines. If the speed is considered as a function of the purchasing price, then the potential for optimisation is even higher. Depending on the lapping and the type of yarns used, the speed can be increased to 900 min-1, which represents more than a 100% increase in performance compared to the previous models in the SU series and the chain-controlled machines.
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Sustainable Value Additions for Textile Machinery Processes
By : M.M.Biradar
The engineering professionals must always put their best efforts on the manufacturing floor with innovative experiments and making them successful by adding value to the process for long term sustainability of the organization. Here, few experiments and their results are discussed.
1) Common Tube Suction System: In Ring Spinning, the lapping on rollers – either on top or bottom roller – is one of the chronic issues, especially in PV fiber dyed Spinning at higher and higher spindle speeds. The huge amount of physical effort is required in removing lapping and joining broken threads. If it is too high, it affects workload of operators also. There are two options to reduce lapping frequency on the rollers in ring frames. Either use of higher capacity suction motor to increase the suction pressure or reduce number of openings on suction ducts. The Common Tube Suction System will help us to improve suction and reduce the breakages in LR6 ring frames. The suction is improved by 40% with common tubes compare to earlier tubes.
Study On Hairiness Reduction in Nozzle – Ring Spinning: Role of Air Drag Forces and Angle of Impact of Air Current Study On Hairiness Reduction in Nozzle – Ring Spinning: Role of Air Drag Forces and Angle of Impact of Air Current
By : R. S. Rengasamy & Asis Patnaik
Abstract
In this paper we report on the effect of axial angle of air inlets of air-nozzles on yarn hairiness reduction in Ring spinning. Simulation of airflow was carried out using Computational Fluid Dynamics Software (CFD) to compute drag forces acting on yarn and hairs. Nozzle-Ring yarns have lower hairs compared to control yarn in all hair-length groups. The drag forces play an important role in reducing yarn hairiness. It is observed that the angle of air inlets decides the direction of impinging of air on the hair and hairiness reduction.
Introduction
The hairiness of yarns can be controlled by placing an air-nozzle at winding machine or at ring frame; the later is termed as ‘Nozzle-Ring spinning’. Nozzle positioning, mechanism of hairiness reduction and effect of nozzle and process parameters on hairiness reduction are discussed in a series of papers. In this study we report on the role of axial angle of air inlets on airflow velocity and their effects on hairiness using results of airflow simulation and experiments.
