1 Reasons for warp yarn breakage
(excluding reasons for yarn quality and preparation)
1. Comprehensive The frame is too high or too low, and the left and right sides are uneven.
2. The opening is too large or too small, too early or too late.
3. The warp route is too short (the back beam passes the front), and the warp tension is too high
4. The position of the back beam and warp stop The deficit is high, and there is a huge gap in tension between the upper and lower layers.
5. The distance between the drop frame and the heald frame is too far or too low.
6. Air conditioning and humidity are too high or too low. (Especially hemp yarn has the greatest reaction)
7. The sword neck, steel reed, healds, drop pieces, sword belts, etc. are rough.
8. The over-bracing position is too high and should be 1mm away from the lowest position.
9. Knots and yarn ends, flying flowers and debris are stirred into the warp yarn.
10. The warp yarn is cut off or stirred poorly during the warp operation, and the yarn knot after the warp is broken is poor; for example, the yarn tail is long.
2 Reasons for weft breakage
1. The weft yarn strength is too low, loose twisted yarn, large knots, cotton seed scraps, and flyback yarns are attached.
2. The winding force is too strong, the tension is too high, and the forming is poor.
3. The side brace hits the reed too far forward, and there should be at least 1mm gap from the reed.
3 Double weft
1 , Weft yarn breakage is the main reason, and weft breakage must be reduced first.
2. The turner on duty did not pay attention to clear the broken weft in the fabric felling after the end was broken.
3. The turner on duty did not start the machine in a suitable order after weft breaking.
4. After the weft yarn is broken, the weft breaking movement does not stop immediately, but there are several or one weft yarn missing in the middle.
4 Weft reduction
1 , The weft yarn twist is too large.
2. The weft yarn is too dry or too wet.
3. Unclear speech.
4. Opening the mouth too early or too late.
5. The weft tension is too small.
6. Insufficient warp tension.
7. The weft yarn package has big knots, flying flowers, debris adhesion, and thick yarns causing some unclear openings.
5 Small and rare roads
1. The reed seat and the take-up bristle roller are loose or corroded.
2. The warp tension is too large or too small.
3. There is a huge difference in tension between the upper and lower layers of warp yarn.
4. The shed is not corrected when driving after parking for a long time.
5. Starting too slowly after parking will affect the beating-up force. (The main motor belt is loose and weak)
6 Weft tail weaving in
1. The right warp yarn is too far away from the downwind pipe, and the waste edge yarn cannot clamp the yarn tail well.
2. The weft tension is too small and the sword head is opened too late.
7 Thin Road
1 , the cause is weft breakage, weft breakage must be reduced first.
2. The broken weft take-up and unwinding device is defective.
8 Jumping Flowers
1 , The heald frame is loose, uneven or too low.
2. There is a huge difference in warp tension between the upper and lower layers.
3. Over-sizing, sticky opening, and poor sizing cause pompoms or hairiness.
4. The warp yarn has flying hair, yarn tail and big knot.
5. The head and tail of the heald are broken or the heald is messed up.
6. Some warp yarns are loose or the tension is too low.
7. The opening time is wrong. (The opening is too small)
8. The height of the side supports is not standard.
9. The reed number is too dense, please check the reed number and process sheet.
10. There are too many yarns per reed. Check the process sheet.
9 Spider Web
1. Menopausal tablets are dense and do not stop immediately after menopause.
2. Flying flowers accumulate between menopausal slices, causing movement failure.
3. There are flying flowers, yarn tails and debris inside the opening.
4. The heald is broken.
5. The tension of the weft yarn is suddenly too large, and the side brace breaks the weft yarn into an edge spider web.
6. The menstrual disc is incomplete, bent, and too light (weight)
7. There are more than two menstrual discs in one Warp.
8. Other causes of menopause.
10 Secret Road
1 , Too much withdrawal from the cloth surface occurs when the lathe breaks the weft, or too much withdrawal occurs from the cloth surface when the cloth is broken.
2. The coiling part is stuck with debris or is not lubricated enough.
3. The bristle roller and bristle skin are damaged or severely worn.
4. The pressure roller has insufficient pressure or is bent.
5. The roll cloth is not rolled tightly when dropping the cloth.
6. The cloth rolling roller is too smooth.
11 Reed marks, square holes, rough cloth surface
1. The tension difference between the upper and lower warp yarns is too large.
2. The heald frame is uneven, too high or too low.
3. The warp tension is too large or too small.
4. The rear beam is too low and the stopping frame is too low.
5. The opening is too large or unclear.
6. Opening the mouth too late or too early.
7. The sizing is excellent.
8. There are too many warp threads per reed.
9. The sizing is too wooly and the opening is sticky.
10. The reed teeth are too thick or unevenly distributed.
11. The factory is too dry.
12. The weft yarn tension is drawn out unevenly.
12 Temple Defects
1. The needle size of the side support is too thick or too thin.
2. The tip of the temple support is bent or broken.
3. The terry loops of the temple support are not flexible in rotation or are worn out.
4. The position of the temple support is incorrect.
5. The cloth surface tension is too high or too low (warp tension)
6. The weft yarn tension is too high.
7. There are flying flowers, debris, yarn tails, etc. inside the temple stays.
13 Broken edge yarn
1. The temple support is not flexible in rotation or the bristle roller is worn.
2. The position of the temple support is too high, too low, too far forward or too far behind.
3. The reed teeth are squeezed, bent, loose or rough.
4. The opening time is inconsistent.
5. Rib selvedge, opening too large, too low, too high, too early or too late.
6. The warp reed width is too wide or too narrow.
7. The warp yarn of the weaving beam is too wide or too narrow.
8. The tension of the weft yarn is too large.
9. The edge yarn threading method and the number of edge yarns are inconsistent.
10. The warp tension is too large or too small.
11. The edge yarn sinks when the weaving beam is wound.
14 Raw edge, towel edge
1. The weft thread tension is too small.
2. The edge yarn threading method is illegal.
3. The selvage opening is too high, too low, too early, too late or unclear.
4. The reed and reed teeth are loose or squeezed.
5. The position of the temple support is too high, too low, or too far back.
15 Tight edge, bag-shaped cloth, hard edge
1. The number of edge yarns per reed is too many, which can be improved by reducing them.
2. The weft yarn tension is too large.
3. The edge yarn tension is too high.
4. Changing plain weave to 2/2 rib yarn can mostly improve the situation.
5. Wrong threading method of edge yarn.
6. The side braces are too short or not used enough, resulting in insufficient stretch.
7. Support the Queen Mother.
8. The difference between the width of the weaving beam and the width of the cloth is too large
16 Loose warp, tight warp
1. Warp yarn ends are cut off (when parallel beams are parallel)
2. Two or more warp yarns are stuck together and become tight and loose when they are separated during weaving.
3. The warp yarn and the warp drop piece are entangled.
4. When the warp yarn is flying, it is sometimes tight and sometimes loose due to poor routing.
5. Bad heald.
6. The knots stretch and relax during warp winding.
7. The waste warp yarn is wound on the weaving beam to press the adjacent yarn.
8. There are flying balls on the warp yarns, and the yarn tails are wound around the healds and drop pieces.
9. The weaving beam is wound too loosely and the warp tension is high during weaving, causing sagging.
10. The length of the weaving beam is different when sizing, and the tightness is different when the machine is machined.
11. The drop frame is too far away from the heald frame (slow speed)
12. The drop piece is too light and bent.
17 Tuft weaving
1 , the tail yarns or warp broken ends and flying debris in the warp opening are removed to form a cluster of warp yarns that are elongated.
2. There are knots on the warp yarns to elongate a cluster of warp yarns.
3. A cluster of warp yarns is elongated by reducing external force.
18 The edges of the fabric are not flush
1. The weft tension is too small or too large and uneven.
2. The warp yarn of the weaving beam is too wide.
3. The edge weaving opening is too large, too low or the edge weaving is behind the heald frame.
4. There are flying yarn tails in the shuttle eye.
19 Side Spider Web
1 , There are yarn tails, flying flowers, etc. in the healds.
2. The weft yarn tension is too large, and the warp and edge yarn tension is extremely small.
3. The position of the temple support is too far back.
4. The edge yarns are threaded incorrectly and the edge yarns are twisted together.
20 Narrow side
1 , The number of edge yarns is too small.
2. The weft yarn tension is too strong.
21 Off the edge
1 , there is tail yarn etc. inside the edge yarn opening.
2. The opening time of the edge knitting is inconsistent.
22 Pom Pom
1 , The sizing rate is too low.
2. The slurry mixture is not suitable.
3. Too much wax is applied.
4. The warp yarn is damp or moldy.
5. The warp is not dried enough.
6. The steel reed teeth are rusty or rough.
7. The menstrual frame is skewed or the menstrual disc is too heavy.
8. Warp tension is too strong
23 Curved weft, bowed weft
1. The temple position is too high or too far back.
2. The length of the temple support is not enough.
3. The needle size of the temple brace is too thin.
4. The edge yarn tension is too high or too low.
5. The edge yarn is reeded too densely.
24 Oil pollution
1. It is stained during the previous processes of worsted spinning, winding and sizing.
2. Contaminated during transportation.
3. Mechanics and car mechanics have unclean hands.
4. Contamination under other circumstances.
25 holes, tears
1. Hard or sharp objects collide with the cloth surface or the bristle roller.
2. The bristle roller and the edge of the cloth are damaged.
3. Rubbing between the full roller and the edge of the cloth during transportation.
4. The stitch number of the side brace terry is too thick or too thin.
5. The fabric tension is too tight
26 Uneven dyeing
1. The yarn used is not uniformly mixed with cotton or the wrong type of yarn is mixed.
2. The yarn twist varies greatly.
3. The yarn stabilization conditions are not uniform.
4. The yarn is moldy or stained with oil.
5. Too much wax is infiltrated during sizing.
6. The sizing material is not easy to fade.
7. Part of the warp threads were accidentally rubbed.
27 Wrong weft
1 , Wrong weft insertion
2. Wrong color of weft tube
3. Wrong yarn count mixed in during winding
4. Lathes use other machines with different wefts
28 Foreign fibers, flying flowers and sundries are woven into the fabric
1. Contamination during the previous processes of worsted spinning, winding and sizing.
2. The cheese yarn is not clean.
3. The cloth machine is not clean properly.
4. Poor weft cutting method.
5. Poor taxi handling methods.
29 Wide and narrow
1. The reed size is not suitable.
2. The reed number is wrong or inaccurate.
3. The humidity in the factory is too high or too low.
4. The warp tension is too small or too large.
5. Too much or too little head portion.
6. The number of reeds per edge yarn is too few or the number of reeds is insufficient or too large
7. The wrong thin count or Thick count weft yarn or weft density is too sparse or too dense.
��Same weft yarn
28 Foreign fibers, fly flowers and sundries are woven in
1. It is stained during the previous processes of worsted spinning, winding and sizing.
2. The cheese yarn is not clean.
3. The cloth machine is not clean properly.
4. Poor weft cutting method.
5. Poor taxi handling methods.
29 Wide and narrow
1. The reed size is not suitable.
2. The reed number is wrong or inaccurate.
3. The humidity in the factory is too high or too low.
4. The warp tension is too small or too large.
5. Too much or too little head portion.
6. The number of reeds per edge yarn is too few or the number of reeds is insufficient or too large
7. The wrong thin count or Thick count weft yarn or weft density is too sparse or too dense. </p
