![NAME LIST: ID NO:
▪ UK [ PRESENTATION MAKER] [150300602]
▪ SAMIM HOSSAIN [ GROUP OF MEMBERS] [150300601]
▪ MAHABUB ALAM [ GROUP OF MEMBERS] [150100489]
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GROUP OFTHE MEMBERS :…………
PRESENTED BY](https://image.slidesharecdn.com/presentation5-copy-170529125510/85/study-on-the-weft-patterning-mechanism-3-320.jpg)
study on the weft patterning mechanism.
- 2. NAME OF THE PRESENTATION NAME: STUDY ON THE WEFT PATTERNING MECHANISM PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
- 3. NAME LIST: ID NO: ▪ UK [ PRESENTATION MAKER] [150300602] ▪ SAMIM HOSSAIN [ GROUP OF MEMBERS] [150300601] ▪ MAHABUB ALAM [ GROUP OF MEMBERS] [150100489] LLLLLLLLLLLLLLLLLL K K K K K K KKKKKK GROUP OFTHE MEMBERS :………… PRESENTED BY
- 4. What is weft patterning? Textile weaving technique in which a pattern is formed or the ground enriched by the use of more than one series of weft strands. It’s define as the weft patterning the patterning is done using either a supplementary or complementary weft. fffffffffffffffffffffffffffffffffffffffff fffffffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffffffff
- 6. There are two ways of weft pattern…………… 1. Continuous and 2. Discontinuous . 1.Continuous wefts travel from edge to edge of the cloth (use of a shuttle, typical of most conventional cloth) 2.Discontinuous wefts do not travel from edge to edge, but only in small areas where they are needed for the design (tapestry or inlay designs) bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
- 7. WEFT PATTERNING MECHANISM: *Widthwise variations in woven fabric’s appearance are accomplished by using yarn of different fibers, count, twist and/or colors. *if changes are in the filling (weft-patterning), different yarns are introduced across the fabric. *each variation in the weft requires a separate source of supply and a yarn feeding mechanism which are activated by a selection mechanism available on the weaving machine. *On shuttless weaving machine machines the weft supply packages are mounted stationary on the frames.
- 8. WEFT PATTERNING MECHANISM: ▪ During picking , the individual weft thread is fed to the weft carrier . ▪ Thus , to change the weft color ,color only the weft feeder , whose weight is few grams is displayed over a distance of millimeters . ▪ The color weft change motion does not , in effect , limit the speed of the weaving machine . ▪ all shuttless weaving machi9ines equipped with one sided picking motions must have some weft change motion.
- 9. Some pictures of weft pattterning: GUATEMALAN SUPPLEMENTARYWEFT PATTERNING. To set up the patterning sticks, the shed rod shed is opened and the first set of patterning warps are picked up. Pick one, drop two, pick one, drop two across the width of the warp.. NOTE: I am using doubled threads so what looks like two threads in the photos actually counts as one thread. The weavers use a pointed stick to do this. RIGHT: The pointed stick is inserted under all the picked warps and then pushed up toward the heddles. This will raise the picked up warps on the other side of the heddles. Another stick is then placed under the warps on the other side of the heddles. This is the first patterning stick. wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww wwwwwwwwwwwww wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww wwwwwwwwwwww
- 10. Method of weft patterning mechanism. The first patterning stick sits up beyond the shed rod until called into use. Here you can see the two patterning sticks in place up beyond the shed rod…one on top of the warp and another underneath. sssssssssssssssssssssssssssssssssssssssssssssssss
- 11. Method Weft patterning mechanism: The base of the little Guatemalan tree is a double horizontal line. STEP ONE:To form this horizontal line, place a strand of around 40cm/16″ of supplementary weft under the central patterning warp.The two ends on either side should be of equal length.The central warp in my set- up just happens to be in patterning shed 2 so I have started in the heddle shed. The steps for horizontal wrapping are shown here. The left end of the weft wraps to the left and returns and then in STEP 4, the right end wraps to the right and returns.These four steps all take place in the same pattern shed.The wefts wrap around four warps on their return journey to the center. STEP 5: Pass the main weft through the complete shed.
- 12. *Weft patterning design* Two wefts are used to weave the above typical patterns of Santa Catarina Palopo: a red weft is passed through the two main sheds (shed rod shed and heddle shed) to weave the ground weave and the brightly colored supplementary wefts are passed under or wrapped around the patterning warps to form the motifs.These are samples that I wove when I returned from Guatemala. Motifs are usually started and ended with four rows of supplementary wefts in the patterning sheds forming the yellow brick-like design shown above.The colored pattern weft (in this case yellow) is passed through the pattern shed and then the main weft (in this case light green) is passed through the main shed.
- 13. CONCLUSION: THE WEFT PATTERNING MECHANISM AT PRESENT IS NOW USINGVERY SPECIAL PURPOSETO MAKE A GOOD DESIGNING FASHIONABLE CLOTH . YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYYYYYYYYYYY Y