STATISTICAL ANALYSIS OF HAIRINNES OF YARNS PRODUCED
ON DIFFERENT SPINNING SYSTEMS
Abstract:
Hairiness can be considered as sum of the fibre ends and loops standing out from the main
compact yarn body. Beside other instruments, there are two major testing equipments
available on the market used for evaluating the yarn hairiness. The most popular instrument
is the Uster hairiness system, which characterizes the hairiness by H value, and is defined as
the total length of all hairs within one centimeter of yarn. The hairiness H is an average value
giving no indication of the distribution of the length of hairs. The so-called hairiness diagram
contains information about the H valued in the 400 m yarn portion. Main aim of this
contribution is analysing the distribution of H value for cotton yarns and comparing the
compact yarns according to possible bimodality (two types of hairiness). The results show
that in general the fibres hair distribution are of bi-modal shape and comprises a mixture
Gausian distribution.
Authors: J. Militký, S. Ibrahim
Publication Year: 2007
Type: pdf
Size: 550KB
Pages: 5
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Textile - Reference Book for Spinning
This spinning handbook follows the ones on weaving, knitting and finishing, all of which have
now reached their second edition, the 12,000 copies printed to date bearing witness to the interest
generated by the series.
A fifth book, on chemical fibres is currently being produced to complete the series.
The need to publish these books emerged in the course of a series of meetings that ACIMIT had with
principals and teachers in the context of various initiatives designed to promote relations between the
industry and schools.
We were told that the textbooks currently in use do not reflect the continued and rapid technological
evolution the sector has seen in recent years.
With the precise aim of publishing handbooks that respond, as far as possible, to students learning
needs, the ACIMIT Foundation decided, in agreement with the schools principals, to entrust a group of
teachers from the schools themselves with the task of realising the series of books. The teachers involved
accepted this challenge enthusiastically.
now reached their second edition, the 12,000 copies printed to date bearing witness to the interest
generated by the series.
A fifth book, on chemical fibres is currently being produced to complete the series.
The need to publish these books emerged in the course of a series of meetings that ACIMIT had with
principals and teachers in the context of various initiatives designed to promote relations between the
industry and schools.
We were told that the textbooks currently in use do not reflect the continued and rapid technological
evolution the sector has seen in recent years.
With the precise aim of publishing handbooks that respond, as far as possible, to students learning
needs, the ACIMIT Foundation decided, in agreement with the schools principals, to entrust a group of
teachers from the schools themselves with the task of realising the series of books. The teachers involved
accepted this challenge enthusiastically.
Authors: Ezio Carissoni, Stefanno Dotti, Franco Fleiss, Luigi Petaccia, Lucia Pieri
Publisher: Fondazione ACIMIT
Publication Year: 2002
Type: pdf
Size: 23.9MB
Pages: 199
Publisher: Fondazione ACIMIT
Publication Year: 2002
Type: pdf
Size: 23.9MB
Pages: 199
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