Three decks, duo core yarn attachment

3D – Three decks – is the Pinter Group attachment for the production of Duo Core yarn. The attachment allows to work with LYCRA® and LYCRA® T400® by The Lycra Company. Each filament is fed with its own draft and they are combined just before the insertion into the ring frame, where they are covered by spun fibres. The resulting yarn has the high stretch of LYCRA® fibre and the excellent recovery of LYCRA® T400® fibre.

The attachment has been developed to guarantee three essential qualities in the yarn:

    • Constant elasticity along the yarn.
    • Perfect centring of the filaments to obtain a good coverage of the core.
    • No filaments missing.

Composition of 3D

LYCRA® filament creel

The creel to house the LYCRA® bobbins is made up of couple of unwinding rollers with the following characteristics: it's electronically driven and the speed of rollers is adjustable to set the correct elasticity in filament. The speed is constant to guarantee the same elasticity in the yarn from the beginning to the end of the ring frame. Knurled surface to avoid bobbin slippage.

LYCRA® T400® filament creel

In addition to the creel for LYCRA® bobbins, 3D is equipped with another creel to house the LYCRA® T400® filament bobbins. The features and the working principle of this creel are the same as the LYCRA® creel, with the difference that in this case the bobbins are distributed in two decks.

Bobbin lifters

3D is equipped with bobbin lifters: in case of filament breakage, the operator can pull up the bobbin to avoid lapping over the unwinding rollers.

CTL guides

Patented special guides guarantee a constant elasticity and precise centring of the filaments in the yarn. These guides are connected to the traverse of the ring frame, moving together the two filaments and the roving. Due to the automatic movement there is no need to do the manual setting of the guides. Beside this, the automatic movement helps to avoid an excessive wear of the cots.

Features and advantages

  • It can be installed on any kind of ring frame, either for short or long staple fibres.
  • It is equipped with filament breakages detectors and Roving Stop motion to ensure the presence of the filament inside the yarn.
  • It can be combined with PCESY slub attachment.
  • It can be upgraded to produce Tri Core yarn.
  • Tailor-made mechanical adaptation according to the ring frame model.
  • Electrical cabinet with cooling technologyand tropicalized control board developed to work in extreme temperature conditions. 
  • In-built UPS.

3D allows the production of the following kind of core yarns:

  • Combination of LYCRA® filament with LYCRA® T400® covered by any spun fibre.
  • LYCRA® filament covered by any spun fibre.
  • LYCRA® T400® covered by any spun fibre.
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