| 摘要 |
In the manufacture of non-woven fabrics waste material is avoided by determining the distribution of the weight per square unit of both border zones of a non-woven and by folding thereafter a part of the thinner border zone toward the inner part so that the resulting non-woven has a uniform distribution of weight per square unit. Especially in the case of non-woven fabrics made from slightly extensile material or having border zones which shall not be stretched, the web is guided at an angle about in the middle of the folding zone, the angle being inclined towards that level towards which the border zone is folded; non-woven fabrics with very uniform distribution of weight per square unit are thereby obtainable. |
