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Page 61 - Shawl Weaving Artisan - TP
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    Textile & Handloom                                                                Exercise 1.4.36
                Shawl Weaving Artisan - Defects and Yarn Quality

                Fabric analysis, measuring EPI and PPI

                Objectives : At the end of this exercise you shall be able to
                •  identify warp and weft direction in a fabric and calculate EPI and PPI.

                  Requirements

                   Tools/Equipment’s/Instruments                      Materials
                   •  Different Fabric sample. (cotton, wool,         •  Needle                             - 1 No.
                      synthetic, etc.)                 - as reqd.     •  Notebook                           - 1 No.
                   •  Pick glass or magnifying glass   - 1 No.        •  Pen                                - 1 No.
                   •  Ruler or scale                   - 1 No.

                PROCEDURE

                TASK 1: Analyze warp, weft, EPI and PPI

                Step-by-Step procedure                                  3  Record the EPI in notebook.
                A  Identify Warp and Weft Direction                   C  Count Picks per Inch (PPI)
                   1  Put one sample fabric and rub in both directions.  1  Place pick glass or scale on the weft  direction
                                                                           (width-wise).
                   2  Check the length and width.
                                                                        2  Count the  number of  weft  threads (picks) in 1
                   3  Mark Directions: Use a pen to mark the warp and      inch.
                      weft sides on the sample for easy reference.
                B  Count Ends per Inch (EPI)                            3  Record the PPI in notebook.
                                                                      D  Report Format
                   1  Place pick glass or scale on the warp direction
                      (length-wise).                                    1   Write all the observations in the below mentioned
                                                                           table 1
                   2  Count the number of threads in 1 inch along the
                      warp direction.
                                                                Table 1

                  S No.           Parameter                                     Observation

                    1       Type of Fabric
                    2       Warp direction

                    3       Weft direction
                    4       Ends per inch (EPI)
                    5       Picks per inch (PPI)

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