A FORMER HEAD AND AN APPARATUS COMPRISING SUCH A FORMER HEAD

The invention relates to a former head of the kind which is used for forming， such as dry forming， of a fibrous web， where fibres are supplied to the former head mixed with air via at least one injection inlet. The former head comprising: a) a roller being rotatable in a rotation direction around a rotation axis and comprising: a roller surface surrounding the rotation axis， and a plurality of projections extending outwardly， such as radially outwardly， from the roller surface， b) a screen extending along at least part of the roller surface above the rotation axis， the roller surface and the screen defining the re between a peripheral gap， and c) the injection inlet， wherein the injection inlet is positioned to conduct the mixture of the fibres and air into the peripheral gap in a delivery direction opposite or substantial opposite to the rotation direction of the roller.

搜集汇总

背景与挑战

背景概述

该数据集描述了一项关于成型头及其装置的发明，该成型头用于纤维网（如干法形成）的形成过程，通过喷射口将纤维与空气混合物输送到旋转辊与筛网之间的外周间隙中。数据集属于植物学领域，数据格式为文本，覆盖时间为2020年。