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Spin-dyeing and selective yarn modification with ROWASOL liquid

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Spin-dyeing and selective yarn modification with ROWASOL liquid Powered By Docstoc
					                                                                                                        ROWASOL GmbH                    Plant Karstädt
                                                                                                        Headquarter                     Ringstraße 2a
                                                                                                        Siemensstraße 1-5
                                                                                                        25421 Pinneberg
                                                                                                        Tel.: +49 4101 706 04
                                                                                                                                        19357 Karstädt
                                                                                                                                        Tel.: +49 38797 903 100
                                                                                                                                        Fax: +49 38797 903 200
                                                                                                                                                                                 ROWASOL
                                                                                                        Fax: +49 4101 706 400           info@rowasol.de
                                                                                                        info@rowasol.de                 www.rowa-group.com
                                                                                                        www.rowa-group.com



              Optimisation of production processes with ROWASOL                                                      Quality aspects of spin-dyeing with ROWASOL liquid colours


                                                                                                                                                                                                                    Spin-dyeing and selective yarn modification
           It still often takes several weeks to manufacture colours matched to customers’ exact                                                                                                                    with ROWASOL liquid additive and colour concentrates
           specifications. This is obviously too long to enable a company to compete successfully
                                                                                                                              Colour strength                                      Colour homogeneity
           in the increasingly cut-throat market environments of the future. This is why intelligent,
           up-to-date solutions for optimising the colouring process are of key importance to the
                                                                                                                                                                                                                    Textile and technical polyester filament yarns
           companies concerned.

           ROWASOL strongly recommends its liquid colours, which are innovative, technical
           solutions, offering manufacturers the benefits of greater production efficiency and lower
           production costs. Using ROWASOL’s range of basic colours, customers can mix their
           own colours and produce the exact required quantity of the mixture at any time.
           The mixing process can be completed in one working day (just-in-time). Alternatively,
           ROWASOL can produce any colour formulation to the customer’s exact specification.




                                                                                                             PET filament yarns coloured with ROWASOL                            Knitted hose specimens for
                                                                                                             at concentrations of 0.5 – 3%                                       testing colour uniformity of PET
The advantages of liquid dyes speak                                                                          (various deniers)                                                   yarns coloured with ROWASOL
for themselves

 Process optimisation
                                                                                                             Comparison of physical properties of yarns spin-dyed with a
 Maximum flexibility
                                                                                                             ROWASOL liquid colour (grey-blue) and undyed standard yarn
 Waste reduction
                                                                                                                        Parameter                        0                 1                       2
 Significantly shorter cleaning times
                                                                                                               Colour: grey-blue                       None       FL 16155 - grey-blue    FL 16155 grey-blue
 Less downtime
                                                                                                               Ratio of injected dye to melt (%)         –                1,0                     2,5
                                                                                                               Colour viscosity at 10 1/s (mPas)         –               4200                    4200
                                                                                                               Colour viscosity at 24 1/s (mPas)         –               2890                    2890
                                                                                                               Colour density (g/cm3)                    –               1,36                     1,36
                                                                                                               Filaments                                36                36                       36
                                                                                                               Winding speed (m/min)                   3200              3200                    3200
                                                                                                               Titre (dtex)                           172,36            171,75                  170,90
                                                                                                               Tensile strength (cN/dtex)              2,37              2,30                     2,17
                                                                                                               cv elasticity (%)
                                                                                                               Quality coefficient
                                                                                                                                                      118,33
                                                                                                                                                      25,78
                                                                                                                                                                        121,48
                                                                                                                                                                         25,35
                                                                                                                                                                                                122,97
                                                                                                                                                                                                 24,06
                                                                                                                                                                                                                               ROWASOL
                                                             ROWASOL Karstädt         The ROWA GROUP headquarters in Pinneberg




               ROWASOL – Your specialist for liquid colour and additive concentrates                                                                                          INJECT AC - A new, highly efficient technology                                                                                    Injection of ROWASOL liquid concentrates with INJECT AC



                                          Scarcely any modern-day life situation is imaginable without versatile plastic products.        Accurate dosing can be                                                                                                                             ROWASOL liquid colours




                                                                                                                                                                                                                                                                                                                                                  Rowaclean
                                                                                                                                                                                                                                                                                                                                                                                                                                                      Flushing Valve
                                                                                                                                          so simple:




                                                                                                                                                                                                                                                                                                                                                                   Colour 1


                                                                                                                                                                                                                                                                                                                                                                              Colour 2


                                                                                                                                                                                                                                                                                                                                                                                            Colour 3
                                          Consequently, it is not surprising that demand is growing for high-quality additives and                                                                                                                                                           facilitate efficient manufacture of
                                          colourants with properties meeting contemporary needs for use in these products.                                                                                                                                                                   high-quality, spin-dyed yarns.
                                                                                                                                                                                                                                                                                                                                                                                                       Drive 1 Drive 2
                                                                                                                                          Close development co-operation between                                        2. Pressure injection                                                                                               Colour Valve                                                                        heating
                                                                                                                                                                                                                        into mixer head
                                          ROWASOL thinks ahead and develops innovative solutions. It enhances this with top-              Neumag and ROWASOL has yielded a                                                                                      1. Zero pressure
                                                                                                                                                                                                                                                                injection
                                          quality service. ROWASOL is investing in pioneering liquid product systems. ROWASOL             completely new dosing system enabling                 3. Injection before a                                                                          Extremely fine colour dispersion ensures
                                                                                                                                                                                                3DD mixer
                                          perfects systems for homogenous colouring of all commonly used plastics, develops               high-precision injection of ROWASOL                                                                                                                                                                                                                          Booster Metering                            P melt       Waste bucket

                                                                                                                                          colour and additive concentrates directly                                                                                                          optimal yield and colour strength from the                          Control Valves                        Pump Pump
Digitally controlled injection moulding   additive concentrates that guarantee optimal product properties and uses only the latest                                                                                                                                                                                                           4-6 bar                                                              -p = 0 bar

                                          state-of-the-art technology.                                                                    before the spinning pump. The customer is                                                                                                                                                                                                                          P1            P2               Melt Non-
machines for precise colour adjustments                                                                                                                                                                                                                                                      pigments used ‘ cuts colouring costs                                                                                                           Return Valve
                                                                                                                                          free to decide where he wants to make the                                     Mixer          Screw
                                                                                                                                          injection.                                                                    (mechanical    (mechanical
                                          Founded in 2004 as a development of ROWA GmbH, ROWASOL now operates from a                                                                                                    term)          term)                                                   ROWASOL liquid colours significantly                                                  Operating
                                                                                                                                                                                                                                                                                                                                                                                     panel
                                          3,000 m2 plant in the town of Karstädt in the East German state of Brandenburg.
                                                                                                                                                                                                                                                                                             prolong useful life of spinning packs
                                          Its 20,000 m2 site gives it great potential for future expansion.                                                                                                                                                                                                                                                                                             Liquid dosage mechanism used in production process
                                                                                                                                                                                                                                                             4. Injection right before the   ‘ higher productivity       Manufacture of
                                          The company’s roots go back more than 25 years and it can draw on the mass of expe-                                                                                                                                spinning pump
                                          rience gained during that period in the field of liquid colour and additive technology.                                                                                                                                                            correct batch sizes without any over make
                                          ROWASOL is a member of the ROWA GROUP, a powerful unit consisting of five compa-
Extruder for lab trials with granules,                                                                                                                                                                                                                                                       ‘ cuts out unnecessary storage costs
profiles and blown films                  nies specialising in the manufacture of products for use in the plastics and coating
                                          industries. The group is planning rapid expansion of its activities by exploiting available                                                                                                                                                          Customer can mix his own colours with
                                          synergies and encouraging constructive technology transfer.                                                                                                                                                                                                                                                         The liquid carrier used in ROWASOL liquid colours is:
                                                                                                                                                                                                                                                                                             ROWASOL basic colours. No extruder is
                                                                                                                                          Inject AC dosage unit with three colourant tanks,                                                                                                                                                                     Fully compatible with polyolefines
                                          ROWASOL has an extensive range of liquid concentrates. These include not only basic
                                          colours or standard colours (complying with RAL, Pantone and HKS standards), but also
                                                                                                                                          pump systems and electronic controls                                                                                                               required for the simple mixing process                             Stable at temperatures of over 300° C
                                          very specific colours based on the customer´s exact specifications. Its additive concen-                                                                                                                                                           ‘ cuts processing time and increases                               Contains no plasticisers, oils or solvents
                                          trates are available in the form of liquid dispersions. They include agents providing UV
A small compounding unit in the           radiation protection, antistatic agents, thermostabilisers, bactericidals and fire-protection     Positive customer benefits offered by the innovative injection system:                                                                           cost efficiency     ROWASOL caters for
production department                     agents.                                                                                              Extremely high dosage accuracy
                                                                                                                                                                                                                                                                                             individual colour requirements
                                          A steady stream of new products and applications emanates from ROWASOL’s Research                    Maximum flexibility of colour injection procedure
                                                                                                                                                                                                                                                                                             ‘ mixes colours to customer’s exact
                                          and Development Laboratory. It is equipped with ultramodern injection moulding                       Quick colour changes in yarn-spinning process
                                          machines and extruders for the production of granules, profiles and blown films. It has a                                                                                                                                                          specification     Selective use of colouring              Colour-Index                      Masterbatch                 ROWASOL              Colorimetric
                                          networked colorimetric system guaranteeing accurate colour reproduction, and is                      Sharp reduction in production costs                                                                                                                                                                                                                                                        reconciliation
                                          backed up by vigilant quality control ensuring the closest possible correlation between                                                                                                                                                            effects ‘ higher sheen, pastel tones,
                                                                                                                                               Less rinsing and cleaning steps, resulting in:                                                                                                                                                    Pigment GREEN 7                                100%                     +38%             (colour strength):
                                          individual colour batches and the relevant standards.
                                                                                                                                               Significant reductions in yarn and polymer wastage                                                                                            covered shades – anything is possible                                                                                                        Liquid colour against
                                                                                                                                                                                                                                                                                                                                                 Pigment RED 122                                100%                     +39%             master batch (each with
Automatic blending facilities enable
                                                                                                                                               ROWASOL liquid colours are not subjected to thermal stress prior                                                                              Guaranteed shelf life of not less than
delivery of customers’ orders                                                                                                                                                                                                                                                                                                                                                                                                             20% pigmentation
anywhere in Germany within 24 to 48                                                                                                            to injection into the polymer melt                                                                                                                                                                Pigment BLUE 15:1                              100%                     +16%
                                                                                                                                                                                                                                                                                             12 months for colours and additives stored                                                                                                   brightened in 1:1 TiO2)

                                                               ROWASOL
hours
                                                                                                                                               Customer have their own colouring options (just-in-time) from
                                                                                                                                               ROWASOL’s range of liquid basic colours.                                          INJECT AC enables quick colour changes                      at not less than 15° C                              Pigment RED 254                                100%                     +16%

				
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posted:5/9/2011
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