Patent FR-2903124-A1 (FR)
Title: Device for treating mat of stems made of plant fibers e.g. linen by brushing, comprises unit for maintaining and displacing mat, and unit for brushing across all/part of mat in direction starting from maintained part to free end of stems
Inventor: BARRAQUET OLIVIER
IPC: D01B1/12
Filed: 2006-06-29
Abstract: The device for treating a mat (4) of stems made of plant fibers e.g. linen by brushing, comprises a unit for maintaining and displacing the mat, a unit for brushing across all or part of the mat in a direction starting from the maintained part to the free end of stems, and a single lower and upper assemblies. The brushing unit is constituted of a set of elementary brushes (8), where each elementary brush comprises a flat support (10) in which hair (9) is implanted. The flat support of all the elementary brushes are mounted optionally in a continuous manner on a continuous element. The device for treating a mat (4) of stems made of plant fibers e.g. linen by brushing, comprises a unit for maintaining and displacing the mat, a unit for brushing across all or part of the mat in a direction starting from the maintained part to the free end of stems, and a single lower and upper assemblies. The brushing unit is constituted of a set of elementary brushes (8), where each elementary brush comprises a flat support (10) in which hair (9) is implanted. The flat support of all the elementary brushes are mounted optionally in a continuous manner on a continuous element (11) moving substantially in transverse direction with respect to a longitudinal direction by displacement of the mat. The continuous element is filled with several types of hair distinguishing by their structure, composition and/or rigidity, e.g. plastic monofilaments and metallic tips. The hair and/or bundles of hair are leaning backwards with respect to the brushing direction. The continuous element is a strip confined on two pulleys, where each elementary brush is fixed on the strip by removable fixing unit. The flat support of each elementary brush is rigid blocks made of plastic material in a form of a rectangular parallelepiped. The fixing of the band is carried out using a line, which is significantly median of each flat support. A diameter of each pulley and a width of each block are determined to ensure that the four blocks spread over a semicircle portion of the strip, during a passage on the pulley. A displacement speed of the mat is represented by V 0, a displacement speed of the elementary brushes are represented by V 1, a length of the elementary brushes are represented by L 0 and a length of the stem is represented by L 1, which are represented by a relation of V 1>= V 0x L 1/L 0. The brushing unit comprises two sets of elementary brushes facing each other for simultaneously ensuring the brushing of the same mat on its two sides. The two sets of elementary brushes are mounted on two frames, and comprise a unit for adjusting a gap between the frames. Sets of elementary brushes are laid successively along a longitudinal displacement of the mat, where the sets have structural or functional differences. The upper assemblies comprise elementary brushes filled with hair of different type, where the first upper assembly is filled only with metal points and the other upper assembly is filled with plastic monofilaments.