Combination of Force and String Lasting
Force lasting and string lasting are relatively cheap in production and
they do not need a complicated machinery. Both are used for sports shoes
. To achieve a best quality in production of a running shoe, the combination
of both can be used. One of the combinations is to use string lasting
at the toe and force lasting at the waist. According SATRA Bulletin (1994)
by using this combination a tighter waist is achieved. Pleas look at the
sections on force lasting and string lasting.
For attaching sole onto a upper, a direct injection moulded and a vulcanised
bottoming methods are used.
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