Advertise Here [468 W x 60 H pixels]
Spin & Wind | February 2015

Loepfe's solutions for spinning needs

Loepfe Brothers is a manufacturer of sensors and monitoring equipment for yarn spinning and fabric weaving processes.
Loepfe Brothers Ltd was founded in 1955 by the brothers Helmut and Erich Loepfe. The company´s electronic control systems are used with success in spinning mills, weaving mills and other textile industries. All Loepfe products are 100 per cent produced in Wetzikon/Switzerland facilities with the most modern production technologies. The company´s technical competence in the textile, electronics and information technology areas as well as the intensive personal contact with our customers all over the world make our products innovative and trend-setting. The high benefit provided by Loepfe products secures leading market positions for our customers and partners.

YarnMaster P-Sensor
The problem

Yarn contamination by white or transparent polypropylene causes production and quality losses. The contamination of cotton with synthetic foreign matter results mainly from contaminated cotton fields and packaging remnants. During processing in the spinning preparatory mill they become smaller and are evenly distributed during folding. Foreign matter elimination when opening the bale can reduce the cut numbers in the winding process by only 10 percent. Experience shows that every fifth machine stop during sectional warping and beam warping is due to polypropylene contamination. Yarn strength is reduced because there are fewer fibres in the cross-section. In addition, hooking can cause machine standstills. The later the standstills occur in the process, the higher the costs incurred.

White polypropylene becomes visible only after dyeing. Clearing improves the yarn standard considerably and prevents costly complaints concerning the dyed end product.

The solution
Polypropylene Detection:
Polypropylene (PP) and other synthetic foreign matter that is transparent and identical in color with cotton/wool can hardly be detected with conventional, optical foreign fibre clearing.

Loepfe has developed the P-Sensor to overcome these problems. This sensor detects synthetic foreign fibres:

  • Irrespective of the color of the yarn and the foreign matter, for example, white and transparent polypropylene in raw-white yarn
  • Even the finest foreign fibres
  • With highest reliability thanks to many years of practical experience

Operating principle: While the yarn passes the P-Sensor, the fibres exchange electrons with the sensor. This effect is referred to as ´triboelectric effect´. It is continuously measured with the latest state-of-the-art electronics. When a synthetic fibre passes the electrode of the sensor, it is detected because of the triboelectric voltage difference. The YarnMaster ZENIT FP yarn clearer thus detects synthetic foreign matter, such as polypropylene, polyethylene, polyamide (nylon), etc

Advantages

  • Efficiency of downstream processes of the spinning mill is clearly increased.
  • Complaints because of foreign matter in the finished, dyed fabric are reduced. In this stage, undyed yarn particles would result in costly faults.
  • The door to the most demanding market segment is opened. In this segment, yarn cleared from polypropylene is the basic prerequisite.
  • Higher margins can be achieved for yarn with a high quality standard.

Conclusion

Loepfe provides optimum solutions with the optical and triboelectric measuring processes. Using a measuring system with limited capability and low reliability is unnecessary and not economical.
Optical: Detection and clearing of yarn faults as well as f

Post your comment
Name:  
Email:    
Comments:  
Verification Code:   Change Image


 
Advertise Here [728 W x 90 H pixels]
AB Carter India Pvt Ltd      Angel Mechtronik      Arvind Rub-Web Controls Ltd      Associated Autotex Ancillaries Pvt Ltd      ATE Enterprises Pvt Ltd      B & R Industrial Automation Pvt Ltd      Basant Mechanical Works      Batliboi Ltd      Best Power Equipments India Pvt Ltd      Bharat Beams Pvt Ltd      Bhatt Bros      Condair      Elgi Electric and Industries Ltd      Embee Corporation      Eppinger Tooling Asia Pvt Ltd      Excel Traders      Gandhi Automations Pvt Ltd      Ion Exchange India Ltd      ITEMA WEAVING (INDIA) PVT LTD      Jogindra Industries Pvt Ltd      K.U. Sodalamuthu and Co. Pvt Ltd      Konica Electronics Enterprise      Kusters Calico Machinery Pvt Ltd      Labelmach      Lakshmi Machine works Ltd      Leuze Electronic Pvt Ltd      Loepfe Brothers Ltd (Masterline)      M-Tex Enterprises      Mayur Reeds And Healds Pvt Ltd      Nestling Technologies      Peass Industrial Engineers Pvt Ltd      Phoenix Textile Engineering Pvt Ltd      Prashant West Point Machinery Pvt. Ltd      Premier Evolvics Pvt Ltd      RENMAKCH India Pvt. Ltd      Rieter India Pvt Ltd (Suessen)      Rieter India Pvt. Ltd      Rossari Biotech Ltd      Savio Texcone Pvt Ltd      SB Dye Springs India Pvt Ltd      Schoch Reeds India      South Gujarat Chamber of Commerce & Industry      SRE Corporation      SSM Scharer Schweiter Mettler Ag (Rieter)      Stovec Industries Ltd      Sunrise Industries      Swiss Ribbons Pvt Ltd      Thies GmbH and Co.      Thymas Electronics Pvt Ltd      Truetzschler India Pvt Ltd      Uster Technologies AG      Vetal Hitech Machines Pvt. Ltd      Weavetech Engineering Pvt Ltd      AB Carter India Pvt Ltd      Angel Mechtronik      Arvind Rub-Web Controls Ltd      Associated Autotex Ancillaries Pvt Ltd      ATE Enterprises Pvt Ltd      B & R Industrial Automation Pvt Ltd      Basant Mechanical Works      Batliboi Ltd      Best Power Equipments India Pvt Ltd      Bharat Beams Pvt Ltd      Bhatt Bros      Condair      Elgi Electric and Industries Ltd      Embee Corporation      Eppinger Tooling Asia Pvt Ltd      Excel Traders      Gandhi Automations Pvt Ltd      Ion Exchange India Ltd      ITEMA WEAVING (INDIA) PVT LTD      Jogindra Industries Pvt Ltd      K.U. Sodalamuthu and Co. Pvt Ltd      Konica Electronics Enterprise      Kusters Calico Machinery Pvt Ltd      Labelmach      Lakshmi Machine works Ltd      Leuze Electronic Pvt Ltd      Loepfe Brothers Ltd (Masterline)      M-Tex Enterprises      Mayur Reeds And Healds Pvt Ltd      Nestling Technologies      Peass Industrial Engineers Pvt Ltd      Phoenix Textile Engineering Pvt Ltd      Prashant West Point Machinery Pvt. Ltd      Premier Evolvics Pvt Ltd      RENMAKCH India Pvt. Ltd      Rieter India Pvt Ltd (Suessen)      Rieter India Pvt. Ltd      Rossari Biotech Ltd      Savio Texcone Pvt Ltd      SB Dye Springs India Pvt Ltd      Schoch Reeds India      South Gujarat Chamber of Commerce & Industry      SRE Corporation      SSM Scharer Schweiter Mettler Ag (Rieter)      Stovec Industries Ltd      Sunrise Industries      Swiss Ribbons Pvt Ltd      Thies GmbH and Co.      Thymas Electronics Pvt Ltd      Truetzschler India Pvt Ltd      Uster Technologies AG      Vetal Hitech Machines Pvt. Ltd      Weavetech Engineering Pvt Ltd