Success Story: Increase in Production by
Converting to the Card C 70
customer Honghai Hangzhou Textile Co., Ltd. is aiming to become
China’s largest manufacturer on the market for air-jet-spun
yarn. Despite increased energy and personnel costs, the
company’s goal is to market a yarn offering a high level of
quality and consistency.
Honghai Hangzhou Textile Co., Ltd. is a fully invested
subsidiary of the Hongfeng Textile Group, located in Hangzhou,
China. The company has invested in a full system of
semi-automated rotor-spinning machinery from Rieter, producing
an annual output of 50,000 tons of Ne10 and Ne30 viscose yarn.
The yarns are well-known and high in demand by various
The yarns are sold in the Zhejiang, Fujian and Guangdong
regions in China and are also exported to international markets
(Brazil, Turkey, etc.).
Rieter cards C 70 at Honghai Hangzhou Textile Co.,
The Challenge: Increasing the
production of viscose yarn
In 2016, Honghai faced a very high demand for viscose yarn.
The C 70 carding machines from Rieter, which already deliver a
high level of performance, processing 80 to 115 kg of sliver per
hour, was unable to meet the demand. Rieter then recommended
enhancing the card production with new technological parts. It
was extremely important to the customer that the quality level
of the sliver was retained, even at higher production speeds.
Mr. Xinfeng Cui, Mill Manager, Honghai Hangzhou
Textile Co., Ltd.
The Solution: Card C 70
Upon Rieter’s recommendation, Honghai decided to test various
parts with new technologies. One of these parts was an
aero-dynamically optimized profile, or “tongue”- that influences
the transition of the fibres from the card cylinder to the
doffer. During the trial period, the company then ran two cards
with a high level of success, achieving a production rate of 160
kg/h each while maintaining the sliver quality. Consequently,
Honghai decided to upgrade its remaining 68 cards with the
recommended technology parts.
The Benefits for Honghai: Developing
its market position
The production at the spinning mill increased by 40% to 100%
and the profitability of Honghai rose substantially. The
investment in the new technology parts for all cards paid off in
a short period of time. The company was able to quickly adjust
to meet the increasing market demand for viscose yarn and expand
its position on the market.
The card C 70 operates at a rate of 160 kg/h.
The Customer’s Statement
“The technological innovations made with the C 70 made us
more profitable. The production has increased substantially
although the costs for the conversions were very low. As a
result, we have bought more sets of parts and upgraded all our
cards. With Rieter’s innovations and technology we can maximize
our profits,” said Xinfeng Cui, Mill Manager at Honghai Hangzhou
Textile Co., Ltd.