crimp and crimp stability and for the prediction of processing and fabric characteristics. OBJECTIVES In order to find objective measures to describe fiber crimp, the experimental approach of this project includes the collection of stress-strain data for various fibers, accompanied by the following deliverables: A quantitative definition of crimp stability A physical model relating filament crimp and crimp retention to fiber and crimp properties such as modulus and geometry A determination of the possible interaction of fiber crimp, crimp stability, carding performance and web properties EXPERIMENTAL APPROACH Carding Experiments with 3den PET Fibers The material available for the carding tests were three bales of 3den PET fibers with different crimp levels supplied by Wellman. Table 1 shows the identification of the test material and the crimps per linear extended inch (CPLI). Identification Crimp Level Type Bale 1 (B1) 9 CPLI 218 Bale 2 (B2) 7.5 CPLI 204 Bale 3 (B3) 9 CPLI 214 Table 1: 3den PET Test Material for Carding Trials The fibers were processed using a “typical” industrial production line at Hollingsworth according to Figure 1.
crimp and crimp stability and for the prediction of processing and fabric characteristics. OBJECTIVES In order to find objective measures to describe fiber crimp, the experimental approach of this project includes the collection of stress-strain data for various fibers, accompanied by the following deliverables: A quantitative definition of crimp stability A physical model relating filament crimp and crimp retention to fiber and crimp properties such as modulus and geometry A determination of the possible interaction of fiber crimp, crimp stability, carding performance and web properties EXPERIMENTAL APPROACH Carding Experiments with 3den PET Fibers The material available for the carding tests were three bales of 3den PET fibers with different crimp levels supplied by Wellman. Table 1 shows the identification of the test material and the crimps per linear extended inch (CPLI). Identification Crimp Level Type Bale 1 (B1) 9 CPLI 218 Bale 2 (B2) 7.5 CPLI 204 Bale 3 (B3) 9 CPLI 214 Table 1: 3den PET Test Material for Carding Trials The fibers were processed using a “typical” industrial production line at Hollingsworth according to Figure 1.
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