Invention Grant
- Patent Title: Method for controlling the local characteristics of a non-woven textile and related installation
- Patent Title (中): 用于控制无纺布和相关设备的局部特性的方法
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Application No.: US12399311Application Date: 2009-03-06
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Publication No.: US08381375B2Publication Date: 2013-02-26
- Inventor: Cathia Dos Santos , Michel Colotte , Jean-Louis Dupont , François Louis
- Applicant: Cathia Dos Santos , Michel Colotte , Jean-Louis Dupont , François Louis
- Applicant Address: FR Tourcoing
- Assignee: Asselin-Thibeau
- Current Assignee: Asselin-Thibeau
- Current Assignee Address: FR Tourcoing
- Agency: Young & Thompson
- Main IPC: D04H5/08
- IPC: D04H5/08

Abstract:
A crosslapper receives a card web and folds it into a lap intended to be needle-punched or consolidated by other ways. The web includes zones which are more condensed, having a spectrum of orientation of fibers with a component parallel to the width of the web, alternating with less condensed zones having a longitudinal unidirectional spectrum of orientations. The zones which are less condensed are used to form the edge zones of the lap. The result is that the lap has different respective spectra of orientation which pre-compensate for the unwanted changes produced by the needle-punching or other consolidation which follows. A needle-punched lap is obtained having a uniform MD/CD ratio (relationship between longitudinal and respectively transverse tensile strengths) or having a sought profile of the MD/CD ratio across the width of the lap.
Public/Granted literature
- US20090217498A1 METHOD FOR CONTROLLING THE LOCAL CHARACTERISTICS OF A NON-WOVEN TEXTILE AND RELATED INSTALLATION Public/Granted day:2009-09-03
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