Polymers in Sport and Leisure

References and Abstracts
polychloroprene and halobutyl rubber. This was followed
by laboratory tests on production grade prototype products
and field tests on footwear with soles made from the most
promising materials. The laboratory tests included
mechanical traction tests on materials specimens and
shoes on wet and dry rock surfaces yielding dynamic
coefficient of friction data. These tests accurately
predicted the final field test results. 1 ref.
USA
Accession no.636053
Item 275
151st ACS Rubber Division Meeting, Spring 1997,
Conference Preprints.
Anaheim, Ca., 6th-9th May 1997, Paper 44, pp.15. 012
DESIGNING FOR APPROPRIATE ATHLETIC
SHOE OUTSOLE TRACTION
Valiant G A
Nike Sport Research Laboratory
(ACS,Rubber Div.)
An examination is made of methods for determining the
traction requirements for sports shoe outsoles by
measuring shear and normal ground reaction force
components with a force measurement platform covered
with playing surfaces. Ratios formed from the force
components define the minimum coefficient of friction
(CoF). Results are presented of studies using a method
which loads shoes with adjustable vertical forces
exceeding body weight, pulls them at high sliding
velocities along any horizontal axis, and accommodates
various playing surfaces rigidly mounted on a force
platform. CoF is calculated from sampled friction and
normal forces. Shoes are also rotated about a vertical axis
to quantify frictional resistance to rotation. 10 refs.
USA
Accession no.636052
Item 276
151st ACS Rubber Division Meeting, Spring 1997,
Conference Preprints.
Anaheim, Ca., 6th-9th May 1997, Paper 43, pp.7. 012
THERMOPLASTIC RUBBER AS A SHOE
SOLING
Carter A R; Turner R H
SATRA Footwear Technology Centre
(ACS,Rubber Div.)
Applications of styrene-butadiene-styrene block copolymer
thermoplastic elastomers in shoe soles are examined.
Injection moulding conditions and compounding
techniques aimed at optimising properties are discussed,
and methods for measuring wear resistance, coefficient of
friction and flex cracking resistance are described. A surface
chlorination process developed by SATRA to promote
bonding with PU adhesives is also outlined. 1 ref.
EUROPEAN COMMUNITY; EUROPEAN UNION; UK; USA;
WESTERN EUROPE
Accession no.636051
Item 277
Shell Chemicals Europe Magazine
No.8, April 1997, p.26
IN THE SWING
The standard method of producing graphite fibrereinforced
golf clubs is to wind prepreg carbon fibre tape
around a steel mandrel; the mandrel is then removed.
Tamworth Plastics has opted for an alternative approach
of making an injection moulded core, winding prepreg
carbon fibre tape around this, but leaving the injection
moulded component in place to form an integral part of
the shaft. The use of gas-assisted injection moulding is
critical to the success of this approach; details are given.
TAMWORTH PLASTICS LTD.
USA
Accession no.635788
Item 278
Injection Moulding International
2, No.2, April/May 1997, p.25-7
SPEED ON ICE: DESIGN AND MATERIAL
DEVELOPMENT FOR AN ICE SKATE BLADE
The rapid growth in material and processing technology
makes it essential for plastics manufacturers,
mouldmakers and designers to keep in close touch. In the
development of plastics components, the properties of the
material and its processing behaviour should be taken into
account right at the draft design stage. The material and
technological studies of Frogdesign, a design agency in
Altensteig, Germany, and of WST, a manufacturer of
sports articles in Villingen-Schwenningen, Germany, led
to the selection of a suitable plastic and to a creative design
for an ice skate blade. The use of an injection mouldable,
high-impact polyamide with 35% glass fibre
reinforcement to produce the component is described.
FROGDESIGN GMBH; FROGDESIGN INC.
EUROPEAN COMMUNITY; EUROPEAN UNION; GERMANY;
WESTERN EUROPE
Accession no.635781
Item 279
Scrap Tire News
11, No.5, May 1997, p.8
CROWN 111 TOP DRESSING EXPECTED TO
USE 10% OF 1997 CRUMB RUBBER
PRODUCTION
Michigan State University’s patented use of crumb rubber
as a turf top dressing is described, and the success of its
exclusive license JaiTire Industries is discussed. Over two
million pounds of crumb rubber from recycled tyres has
been sold by JaiTire under its Crown 111 tradename,
which is more than 1% of the 1996 national production.
1997 sales are expected to consume up to 10% of the
national production.
MICHIGAN,STATE UNIVERSITY; JAITIRE
INDUSTRIES
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