New melt tension apparatus with automatic spooling – compatible with latest generation capillary rheometers

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 1 June 2004

Keywords

Citation

(2004), "New melt tension apparatus with automatic spooling – compatible with latest generation capillary rheometers", Pigment & Resin Technology, Vol. 33 No. 3. https://doi.org/10.1108/prt.2004.12933cad.007

Publisher

:

Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited


New melt tension apparatus with automatic spooling – compatible with latest generation capillary rheometers

New melt tension apparatus with automatic spooling – compatible with latest generation capillary rheometers

Keywords: Rheology, Measurement, Instruments

Bohlin Instruments has introduced a melt tension or “haul off” measurement apparatus that incorporates an automated spooling device for neat collection and storage of the extrudate. The new device is compatible with Bohlin's latest generation of Rosand capillary rheometers – the RH7D and the RH10D – and can be operated directly from the Rosand Flowmastere software (Plate 3).

Plate 3 Rosand capillary rheometers

The automatic spooling feature avoids any tangling which might occur at high take up rates on a conventional “pinch” roller system. Interchangeable spools also allow easy management of extruded samples for other measurements such as tensile testing. Moving parts are shielded by a transparent guard for operator safety.

A further advantage of the apparatus is its exceptionally wide operating range and versatility. Melt take up speeds can be set up to 2,000 m/min with a dynamic range in speed of 100,000 : 1. Melt tension is measurable down to 0.005 g. If required, the unit can be used in conjunction with the Rosand post extrusion oven, which provides a temperature controlled environment below the extrusion die.

For further information on the above and all Bohlin products, contact: E-mail: sales@bohlin.co.uk or visit our Web site: www.bohlin.com