Compound ventilative structure of elasticity in multifilament layer
The utility model discloses a compound ventilative structure of elasticity in multifilament layer. Mainly by the ventilative thing of the elasticity that constitutes as interbedded fibre ball layer between multilayer fiber net layer and the fiber net layer, parallel laying is level or vertical layin...
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Format: | Patent |
Sprache: | chi ; eng |
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