(1) Wing Yarn
Appearance: In the wool of knitted fabrics, the horizontally continuous loops are woven from thicker or finer yarns. Usually more than a single root, but even there are parallel or multiple roots. It is different from the normal one.
Causes:
When the knitted fabric is woven, the operator misuses the yarn of a non-designated count or Danny's size. Misuse of finer yarns makes the fabric appear thin. When the coarser yarn is misused, the fabric appears dense.
(2) Wrong End
Appearance: The warp of the Woven Fabric has a single one or a number of non-specified specifications. If it is a finer yarn, it is called Fine End. If it is a thicker yarn, it is called Coarse End.
Causes:
When the warping is taken, the number of yarns that are taken through is wrong, and warp yarns of non-specified specifications are used. Such cockroaches are often full-fledged.
(3) Wright Pick
Appearance: The weft of the woven fabric, there is one or a continuous number of non-specified specifications. If it is a finer yarn, it is called Fine Pick. If it is a thicker yarn, it is called Coarse Pick.
Causes:
When weaving, the weft yarn of the weft yarn, or the yarn count of the shuttleless weaving machine is fed incorrectly, and weft yarn of a non-specified specification is used. After the operator discovers it, he will stop it and remove it. However, the automatic change of the looms is often difficult to find.
(4) Organizational errors (Wrong Weaving)
Appearance: The weaving method is wrong, and the texture of the cloth is different from the original designer. For example, the left twill is woven into a right twill or the like.
Causes:
Usually caused by wearing errors. Others such as jacquard fabrics have wrong patterns, and warp yarns of multi-standard warp fabrics are arranged incorrectly.
(5) and by (Wrong Draw)
Appearance: Two adjacent warp yarns are joined together, and the fabric is treated as a woven fabric. As such, the root (actually two) yarns are particularly thick. Such cockroaches are all defamatory? If found in the initial weaving of the warp beam, one of the juxtapositions can be completely avoided.
Causes:
1. When the warp is being stretched, the two are neglected as one.
2. After the sizing, the yarns are unclear, and the two stick together and form the same root.
3. Wear two piercings into the same heald when wearing the heddle.
(6) Mixing (Mispick)
Appearance: Two weft yarns are woven into the same weaving mouth, and there are also three or more roots. The length of the latitude is not equal, and the width of the fabric is wider, and more than 10 cm in the vicinity of the two sides.
Causes:
1. The width and length of the fabric are long and the latitude is not checked. Or the weft needle fails, and the weft break does not stop.
2. The length of the non-full length is not enough, because the length of the insurance yarn is not enough, the edge shear is improperly set or not sharp enough, and the yarn tail is not removed after the weft.
(7) Set Mark, Fine
Appearance: The density of the weft arrangement on the cloth surface is less than the specified. The weft yarn woven in a length along the length of the fabric gradually becomes thinner from the normal density, and then gradually returns to the original density from the thinnest to form a sparse cloth surface of equal width and width.
Causes:
1. The probe of the weft is out of order, and the whirl is continued when there is no weft.
2. The warp tension is improperly controlled during weaving.
3. The warp tension adjustment is too tight before stopping and driving.
(8) Set Road, Coarse
Appearance: The density of the weft arrangement on the cloth surface is denser than the regulations. The weft yarn woven in a length along the length of the fabric gradually densifies from the normal density, and then gradually returns to the original density from the densest, forming a tight cloth of equal width and narrowness.
Causes:
1. The warp tension is improperly controlled during weaving.
2. The warp tension adjustment is too loose when the machine is stopped and then driven.
(9) Pick-Out Mark
Appearance: The removal of the weft yarn of the embryo cloth is not good, and after the weaving is continued, there are still traces left on the cloth surface.
Causes:
In the weaving of fabrics, the operator found that weft woven into the weft, or weaved a serious dense road, thin, and immediately stopped the weft yarn to be cut and removed. When the warp is removed, the warp is subjected to the friction of the weft removal, and a large amount of hairiness is generated. Therefore, after re-weaving, a wide and narrow hairy cloth surface is presented in the original demolition range.
(10) Broken End
Appearance: One or more warp yarns of the fabric are broken, so that the distance between the adjacent yarns on the left and right becomes larger. In a plain weave, it becomes two yarns juxtaposed, like a warp. In twill fabrics, the fabric has a discontinuity.
Causes:
The warp yarn was interrupted in the weaving, the self-stop device failed, and the warp yarn was not properly connected and the weaving was continued.
(11) Broken Pick
Appearance: The weft yarn in the fabric is broken, but the distance between the ends of the break is very close, that is, the length of the break is small. This kind of cockroaches is generally not significant.
Causes:
1. The weft yarn breaks in the weaving, but it continues to weave in an instant, only a short distance.
2. The weft yarn has severe rough knots and flying flowers, which cause the weft yarn to break when it is removed.
(12) hundred feet (deficient weft)
Appearance: This kind of enamel only occurs in twill weaving, and the warp yarns in the same part of each complete tissue float on the cloth surface, which looks like a set of feet.
Causes:
When the twill fabric is less woven into one weft yarn, the interlacing point is reduced, and part of the warp yarn is floated twice on the weft yarn.
(13) End Snarl
Appearance: One of the warp yarns of the fabric has a small length of crimped and twisted together and woven into the cloth. Fabrics woven in strong crepe are more likely to occur.
Causes:
One of the warp yarns was excessively slack during warping, and a portion of the warp was curled up.
(14) Filling Snarl
Appearance: The fabric weft yarn has a small length of crimping and twisting together and woven into the cloth. Fabrics woven in strong crepe are more likely to occur.
Causes:
1. In the weft yarn tube or in the cheese yarn used for the weft yarn, there has been a phenomenon in which the small-length yarn is wound and twisted.
2. The weft tube is not formed properly, and the yarn is not smooth when it is retracted.
3. The weft tension is too small, the opening of the weaving opening is not clear.
(15) Reed Mark
Appearance: There is a large gap between the two warp yarns of the fabric, and the weft yarn weaving can be seen, and the zigzag marks are affected by the steel teeth.
Causes:
1. The deformation of the steel caries, the warp yarns are not controlled to be positioned, or the caries are loose.
2. There is one or a few of the warp yarns, and the tension applied during weaving is too large.
(16) Temple Mark
Appearance: There are about 2 to 5 cm wide acupuncture or scratches on the edge of the cloth. In severe cases, the weft yarn of this part is undulated.
Causes:
The thickness of the needle used for the temples is not suitable, and the stab ring of the temples cannot be rotated, or the rotation is not smooth enough.
(17) Appearance of the snagging: At the position near the edge of the cloth, there are many broken spurs in succession. Although it is connected, there are still many yarn tails on the fabric after the woven fabric, and the fabric is woven from the joint. Dense exception.
Causes:
The shuttle is clamped in the shed, which cuts off many warp yarns. Mostly caused by poor shuttle structure, the pick-up and opening movement are hindered. The use of the shuttleless loom can avoid this kind of flaw.
(18) Square Eye (Reedness)
Appearance: The two warp yarns are judged to be squeezed together, and the gap between the left two and the right two is increased, and the weft yarn forms a checkerboard square lattice.
Causes:
1. The angle at which the weaving opening is opened during weaving is too large.
2. The tension between the upper and lower layers is too large.
3. The density of the teeth of the steel shovel is uneven.
(19) Yarn Tail
Appearance: On the cloth surface or at the edge of the cloth, there is a yarn tail that protrudes from the cloth surface.
Causes:
Since the warp or weft yarn is broken, the yarn end is not cut off after the completion. Or the edge of the loom is not broken, and the tail of the yarn after the weft is not cut off.
(20) Connector (Knot)
Appearance: There are thick and squashed balls that are tightly knotted on the cloth surface.
Causes:
After the warp or weft yarn is broken and joined, the knot is too large to protrude from the cloth surface.
21) Fleat
Appearance: Warp or weft yarn is not woven according to the specified structure, but floats on the cloth surface.
Causes:
The angle at which the weaving opening is opened is too small, or the heald is suspended, and a few warp yarns are particularly slack.
(22) Appearance of the spider web: The warp yarn or the weft yarn of the phase judgment occurs, and the yarn of the same part is continuously jumped, so that the fabric of one part has no interlacing point and forms a mesh shape.
Causes:
Same as jumping yarn, only serious.
(23) Weaving Hole
Appearance: The warp and weft yarns of the fabric are broken to form holes of different sizes. This type of warp tends to occur in fabrics that are denser in warp and weft.
Causes:
The shuttle rubs and the licking roller holds the fishing hook, which will break the warp and weft, and the rolling will also break the warp.
(24) Song Suspension (Slack End)
Appearance: A warp yarn woven into a cloth has a phenomenon of upward arching at a point where it is interlaced. Generally referred to in the factory as the ribs.
Causes:
The tension of a single warp yarn is less woven, or the warp yarn is too loose after the warp yarns are joined.
(25) Slack Filing
Appearance: A weft yarn woven into a cloth, at the point of its interlacing point, protrudes from the cloth surface and arches upward. Generally not much obvious.
Causes:
A single weft yarn is less subject to weaving during weaving.
(26) Tight End
Appearance: One warp pattern has a flat value, and the interlaced point has a concave cloth surface. The twill and satin fabrics are more obvious, and the serious ones may cause the cloth body to be uneven.
Causes:
One of the warp yarns is too tight for the weaving, or the yarn is too tight after the warp yarn breaks.
(27) Titht Filling
Appearance: One weft yarn in the cloth pattern is relatively flat, and the interlacing point has a concave cloth surface. Such cockroaches are relatively rare, and they are neither obvious nor tight.
Causes:
The detachment of the weft or the unwinding of the weft is not smooth, and the tension caused by the occasional weaving is too large.
(28) Fracture Appearance: A number of warp or weft yarns juxtaposed in a curved shape to form a gap.
Causes:
Larger thick knots, flying flowers, shrinkage, weft shrinkage, etc., after being removed, the adjacent warp or weft yarns are not combed by steel comb.
(29) Repairing the appearance of the root: The weaving is serious, and although it is excluded and repaired, there are still traces.
Causes:
Broken warp, thin sputum, dense road, etc., although the fabrics are combed by steel fabrics, the arrangement of the yarns is still abnormal and there is a phenomenon of bending.
(30)Teariness
Appearance: The weft yarn in the fabric is not straight, and the weft yarn with a small area is bent in the same direction. In the case where the filamentary fiber is used as a warp yarn, the short fiber spinning is used as a weft yarn, or the warp yarn is much thinner than the weft yarn. For example, rich silk, pull cloth, oxford cloth, etc.
Causes:
1. The fabric is not properly designed, and the warp and weft yarns are easy to slip.
2. The weft density is relatively thin, and the tension of the warp yarn is too large when weaving.
3. During the printing and dyeing finishing process, the cloth is excessively clamped by intermittent during travel.
31) Broken Seelvage
Appearance: The side yarn of the cloth edge has three or more consecutive yarn breaks, and the edge of the cloth is cracked to form a defect.
Causes:
1. When the weaving yarn is subjected to excessive tension, it is broken.
2. If the temple is not used properly or the specifications do not match, the side yarn will be broken.
(32) Tight Selvage
Appearance: The fabric weaving is straight, but the fabric inside the fabric is loose and wrinkled. The fabric is not as flat as the fabric. If the cloth is flattened, the cloth edge is in a state of tighter cloth, or the cloth surface has a hanging pocket.
Causes:
The warp tension of the cloth edge during weaving is too large.
(33) Slack Selvage
Appearance: The edge of the cloth is not flat, like the shape of the ruffle. If the fabric is flattened, the fabric surface is flat and the fabric has a wrinkled or ear-shaped shape.
Causes:
The warp yarn used as a hem at the time of weaving is too loose.
(34) The appearance of the serrated edge: the outermost edges of the two fabric edges are not straight, and the zigzag bends are changed.
Causes:
1. The number of warp yarns used as the edge of the cloth is too small, or the edge of the cloth is not joined after the edge is broken, resulting in insufficient number of side yarns.
2. The tension of the picking force or the weft yarn is too large.
(35) Uneven appearance of the warp: The density of the weft yarn on the cloth surface, the periodicity of the fine-grained change, and the feeling of being thin and dense.
Causes:
The tension sent by the warp yarn during weaving or the rate at which the warp yarn is sent out is unstable.
(36) Leakage needle appearance: The distance between the two rows of loops of the knitted fabric is larger than normal. The line segments connecting the two loops in the transverse direction tend to be straight.
Causes:
When the weft knitted fabric is woven, the yarn is not eaten into the needle, so that a series of loops are woven.
(37) Mismatched yarn appearance: fabrics that are dyed first, or fabrics with different specifications of yarn on the tissue, the yarns are not arranged according to the design, and the pattern or pattern does not achieve the desired effect. Mostly occur in slivers, plaid fabrics and jacquard fabrics of various specifications.
Causes:
1. The number of warp yarns and plaid fabrics is not specified, or the number of woven fabrics of weft woven fabrics is not specified, resulting in abnormal shape of slivers and lattices.
2. The warp yarns of different specifications are not arranged according to the regulations, or the weft yarns of different specifications are not woven according to the regulations.
(38) Starch Lump
Appearance: Dry patches or spots appear on the surface of the fabric.
Causes:
The slurry for sizing is not completely gelatinized, the grout roller is worn, and the surface of the roller is not flat.
(39) Mould spot appearance: grayish black or reddish mildew spots appear on the surface of the fabric.
Causes:
The storage location is too humid and the storage time is too long.
Appearance: In the wool of knitted fabrics, the horizontally continuous loops are woven from thicker or finer yarns. Usually more than a single root, but even there are parallel or multiple roots. It is different from the normal one.
Causes:
When the knitted fabric is woven, the operator misuses the yarn of a non-designated count or Danny's size. Misuse of finer yarns makes the fabric appear thin. When the coarser yarn is misused, the fabric appears dense.
(2) Wrong End
Appearance: The warp of the Woven Fabric has a single one or a number of non-specified specifications. If it is a finer yarn, it is called Fine End. If it is a thicker yarn, it is called Coarse End.
Causes:
When the warping is taken, the number of yarns that are taken through is wrong, and warp yarns of non-specified specifications are used. Such cockroaches are often full-fledged.
(3) Wright Pick
Appearance: The weft of the woven fabric, there is one or a continuous number of non-specified specifications. If it is a finer yarn, it is called Fine Pick. If it is a thicker yarn, it is called Coarse Pick.
Causes:
When weaving, the weft yarn of the weft yarn, or the yarn count of the shuttleless weaving machine is fed incorrectly, and weft yarn of a non-specified specification is used. After the operator discovers it, he will stop it and remove it. However, the automatic change of the looms is often difficult to find.
(4) Organizational errors (Wrong Weaving)
Appearance: The weaving method is wrong, and the texture of the cloth is different from the original designer. For example, the left twill is woven into a right twill or the like.
Causes:
Usually caused by wearing errors. Others such as jacquard fabrics have wrong patterns, and warp yarns of multi-standard warp fabrics are arranged incorrectly.
(5) and by (Wrong Draw)
Appearance: Two adjacent warp yarns are joined together, and the fabric is treated as a woven fabric. As such, the root (actually two) yarns are particularly thick. Such cockroaches are all defamatory? If found in the initial weaving of the warp beam, one of the juxtapositions can be completely avoided.
Causes:
1. When the warp is being stretched, the two are neglected as one.
2. After the sizing, the yarns are unclear, and the two stick together and form the same root.
3. Wear two piercings into the same heald when wearing the heddle.
(6) Mixing (Mispick)
Appearance: Two weft yarns are woven into the same weaving mouth, and there are also three or more roots. The length of the latitude is not equal, and the width of the fabric is wider, and more than 10 cm in the vicinity of the two sides.
Causes:
1. The width and length of the fabric are long and the latitude is not checked. Or the weft needle fails, and the weft break does not stop.
2. The length of the non-full length is not enough, because the length of the insurance yarn is not enough, the edge shear is improperly set or not sharp enough, and the yarn tail is not removed after the weft.
(7) Set Mark, Fine
Appearance: The density of the weft arrangement on the cloth surface is less than the specified. The weft yarn woven in a length along the length of the fabric gradually becomes thinner from the normal density, and then gradually returns to the original density from the thinnest to form a sparse cloth surface of equal width and width.
Causes:
1. The probe of the weft is out of order, and the whirl is continued when there is no weft.
2. The warp tension is improperly controlled during weaving.
3. The warp tension adjustment is too tight before stopping and driving.
(8) Set Road, Coarse
Appearance: The density of the weft arrangement on the cloth surface is denser than the regulations. The weft yarn woven in a length along the length of the fabric gradually densifies from the normal density, and then gradually returns to the original density from the densest, forming a tight cloth of equal width and narrowness.
Causes:
1. The warp tension is improperly controlled during weaving.
2. The warp tension adjustment is too loose when the machine is stopped and then driven.
(9) Pick-Out Mark
Appearance: The removal of the weft yarn of the embryo cloth is not good, and after the weaving is continued, there are still traces left on the cloth surface.
Causes:
In the weaving of fabrics, the operator found that weft woven into the weft, or weaved a serious dense road, thin, and immediately stopped the weft yarn to be cut and removed. When the warp is removed, the warp is subjected to the friction of the weft removal, and a large amount of hairiness is generated. Therefore, after re-weaving, a wide and narrow hairy cloth surface is presented in the original demolition range.
(10) Broken End
Appearance: One or more warp yarns of the fabric are broken, so that the distance between the adjacent yarns on the left and right becomes larger. In a plain weave, it becomes two yarns juxtaposed, like a warp. In twill fabrics, the fabric has a discontinuity.
Causes:
The warp yarn was interrupted in the weaving, the self-stop device failed, and the warp yarn was not properly connected and the weaving was continued.
(11) Broken Pick
Appearance: The weft yarn in the fabric is broken, but the distance between the ends of the break is very close, that is, the length of the break is small. This kind of cockroaches is generally not significant.
Causes:
1. The weft yarn breaks in the weaving, but it continues to weave in an instant, only a short distance.
2. The weft yarn has severe rough knots and flying flowers, which cause the weft yarn to break when it is removed.
(12) hundred feet (deficient weft)
Appearance: This kind of enamel only occurs in twill weaving, and the warp yarns in the same part of each complete tissue float on the cloth surface, which looks like a set of feet.
Causes:
When the twill fabric is less woven into one weft yarn, the interlacing point is reduced, and part of the warp yarn is floated twice on the weft yarn.
(13) End Snarl
Appearance: One of the warp yarns of the fabric has a small length of crimped and twisted together and woven into the cloth. Fabrics woven in strong crepe are more likely to occur.
Causes:
One of the warp yarns was excessively slack during warping, and a portion of the warp was curled up.
(14) Filling Snarl
Appearance: The fabric weft yarn has a small length of crimping and twisting together and woven into the cloth. Fabrics woven in strong crepe are more likely to occur.
Causes:
1. In the weft yarn tube or in the cheese yarn used for the weft yarn, there has been a phenomenon in which the small-length yarn is wound and twisted.
2. The weft tube is not formed properly, and the yarn is not smooth when it is retracted.
3. The weft tension is too small, the opening of the weaving opening is not clear.
(15) Reed Mark
Appearance: There is a large gap between the two warp yarns of the fabric, and the weft yarn weaving can be seen, and the zigzag marks are affected by the steel teeth.
Causes:
1. The deformation of the steel caries, the warp yarns are not controlled to be positioned, or the caries are loose.
2. There is one or a few of the warp yarns, and the tension applied during weaving is too large.
(16) Temple Mark
Appearance: There are about 2 to 5 cm wide acupuncture or scratches on the edge of the cloth. In severe cases, the weft yarn of this part is undulated.
Causes:
The thickness of the needle used for the temples is not suitable, and the stab ring of the temples cannot be rotated, or the rotation is not smooth enough.
(17) Appearance of the snagging: At the position near the edge of the cloth, there are many broken spurs in succession. Although it is connected, there are still many yarn tails on the fabric after the woven fabric, and the fabric is woven from the joint. Dense exception.
Causes:
The shuttle is clamped in the shed, which cuts off many warp yarns. Mostly caused by poor shuttle structure, the pick-up and opening movement are hindered. The use of the shuttleless loom can avoid this kind of flaw.
(18) Square Eye (Reedness)
Appearance: The two warp yarns are judged to be squeezed together, and the gap between the left two and the right two is increased, and the weft yarn forms a checkerboard square lattice.
Causes:
1. The angle at which the weaving opening is opened during weaving is too large.
2. The tension between the upper and lower layers is too large.
3. The density of the teeth of the steel shovel is uneven.
(19) Yarn Tail
Appearance: On the cloth surface or at the edge of the cloth, there is a yarn tail that protrudes from the cloth surface.
Causes:
Since the warp or weft yarn is broken, the yarn end is not cut off after the completion. Or the edge of the loom is not broken, and the tail of the yarn after the weft is not cut off.
(20) Connector (Knot)
Appearance: There are thick and squashed balls that are tightly knotted on the cloth surface.
Causes:
After the warp or weft yarn is broken and joined, the knot is too large to protrude from the cloth surface.
21) Fleat
Appearance: Warp or weft yarn is not woven according to the specified structure, but floats on the cloth surface.
Causes:
The angle at which the weaving opening is opened is too small, or the heald is suspended, and a few warp yarns are particularly slack.
(22) Appearance of the spider web: The warp yarn or the weft yarn of the phase judgment occurs, and the yarn of the same part is continuously jumped, so that the fabric of one part has no interlacing point and forms a mesh shape.
Causes:
Same as jumping yarn, only serious.
(23) Weaving Hole
Appearance: The warp and weft yarns of the fabric are broken to form holes of different sizes. This type of warp tends to occur in fabrics that are denser in warp and weft.
Causes:
The shuttle rubs and the licking roller holds the fishing hook, which will break the warp and weft, and the rolling will also break the warp.
(24) Song Suspension (Slack End)
Appearance: A warp yarn woven into a cloth has a phenomenon of upward arching at a point where it is interlaced. Generally referred to in the factory as the ribs.
Causes:
The tension of a single warp yarn is less woven, or the warp yarn is too loose after the warp yarns are joined.
(25) Slack Filing
Appearance: A weft yarn woven into a cloth, at the point of its interlacing point, protrudes from the cloth surface and arches upward. Generally not much obvious.
Causes:
A single weft yarn is less subject to weaving during weaving.
(26) Tight End
Appearance: One warp pattern has a flat value, and the interlaced point has a concave cloth surface. The twill and satin fabrics are more obvious, and the serious ones may cause the cloth body to be uneven.
Causes:
One of the warp yarns is too tight for the weaving, or the yarn is too tight after the warp yarn breaks.
(27) Titht Filling
Appearance: One weft yarn in the cloth pattern is relatively flat, and the interlacing point has a concave cloth surface. Such cockroaches are relatively rare, and they are neither obvious nor tight.
Causes:
The detachment of the weft or the unwinding of the weft is not smooth, and the tension caused by the occasional weaving is too large.
(28) Fracture Appearance: A number of warp or weft yarns juxtaposed in a curved shape to form a gap.
Causes:
Larger thick knots, flying flowers, shrinkage, weft shrinkage, etc., after being removed, the adjacent warp or weft yarns are not combed by steel comb.
(29) Repairing the appearance of the root: The weaving is serious, and although it is excluded and repaired, there are still traces.
Causes:
Broken warp, thin sputum, dense road, etc., although the fabrics are combed by steel fabrics, the arrangement of the yarns is still abnormal and there is a phenomenon of bending.
(30)Teariness
Appearance: The weft yarn in the fabric is not straight, and the weft yarn with a small area is bent in the same direction. In the case where the filamentary fiber is used as a warp yarn, the short fiber spinning is used as a weft yarn, or the warp yarn is much thinner than the weft yarn. For example, rich silk, pull cloth, oxford cloth, etc.
Causes:
1. The fabric is not properly designed, and the warp and weft yarns are easy to slip.
2. The weft density is relatively thin, and the tension of the warp yarn is too large when weaving.
3. During the printing and dyeing finishing process, the cloth is excessively clamped by intermittent during travel.
31) Broken Seelvage
Appearance: The side yarn of the cloth edge has three or more consecutive yarn breaks, and the edge of the cloth is cracked to form a defect.
Causes:
1. When the weaving yarn is subjected to excessive tension, it is broken.
2. If the temple is not used properly or the specifications do not match, the side yarn will be broken.
(32) Tight Selvage
Appearance: The fabric weaving is straight, but the fabric inside the fabric is loose and wrinkled. The fabric is not as flat as the fabric. If the cloth is flattened, the cloth edge is in a state of tighter cloth, or the cloth surface has a hanging pocket.
Causes:
The warp tension of the cloth edge during weaving is too large.
(33) Slack Selvage
Appearance: The edge of the cloth is not flat, like the shape of the ruffle. If the fabric is flattened, the fabric surface is flat and the fabric has a wrinkled or ear-shaped shape.
Causes:
The warp yarn used as a hem at the time of weaving is too loose.
(34) The appearance of the serrated edge: the outermost edges of the two fabric edges are not straight, and the zigzag bends are changed.
Causes:
1. The number of warp yarns used as the edge of the cloth is too small, or the edge of the cloth is not joined after the edge is broken, resulting in insufficient number of side yarns.
2. The tension of the picking force or the weft yarn is too large.
(35) Uneven appearance of the warp: The density of the weft yarn on the cloth surface, the periodicity of the fine-grained change, and the feeling of being thin and dense.
Causes:
The tension sent by the warp yarn during weaving or the rate at which the warp yarn is sent out is unstable.
(36) Leakage needle appearance: The distance between the two rows of loops of the knitted fabric is larger than normal. The line segments connecting the two loops in the transverse direction tend to be straight.
Causes:
When the weft knitted fabric is woven, the yarn is not eaten into the needle, so that a series of loops are woven.
(37) Mismatched yarn appearance: fabrics that are dyed first, or fabrics with different specifications of yarn on the tissue, the yarns are not arranged according to the design, and the pattern or pattern does not achieve the desired effect. Mostly occur in slivers, plaid fabrics and jacquard fabrics of various specifications.
Causes:
1. The number of warp yarns and plaid fabrics is not specified, or the number of woven fabrics of weft woven fabrics is not specified, resulting in abnormal shape of slivers and lattices.
2. The warp yarns of different specifications are not arranged according to the regulations, or the weft yarns of different specifications are not woven according to the regulations.
(38) Starch Lump
Appearance: Dry patches or spots appear on the surface of the fabric.
Causes:
The slurry for sizing is not completely gelatinized, the grout roller is worn, and the surface of the roller is not flat.
(39) Mould spot appearance: grayish black or reddish mildew spots appear on the surface of the fabric.
Causes:
The storage location is too humid and the storage time is too long.
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