If 1 to 2 warp and weft yarns of the fabric located at the temples are broken by rolling, and the yarn body is fluffy and easy to break, it is called a temple defect, as shown in 2-2.
〔1) Causes
There are many factors that cause temple defects. The main reasons are as follows:
(1) The position of the temple box is too high or too low, and the full width of the fabric is not on the same horizontal line, causing the edges of the fabric on both sides to protrude outward and the fabric body to be concave inward. During beating-up, the fabric body is affected by the beating-up force and causes the fabric to jump. However, the finished fabric in the temple box cannot move due to the extension of the take-in roller, which generates relative torque and easily causes a large number of temple defects.
(2) The fabric surface tension is too high, and the warp yarns are close to the temple licker-in, causing the thorn tips to cut the warp and weft yarns. Most of the temple defects are regular fabric defects.
(3) Fabrics with wider width or larger weft shrinkage are more likely to produce side bracing defects. When the cloth on both sides of the fabric leaves the side support rollers, it shrinks to the center of the fabric body due to the loss of the width of the side support rollers. The spines of the side support rollers exert transverse tension on the fabric structure, resulting in cutting. Warp opportunity.
(4) The temple licker-in is used improperly, or the newly purchased temple licker-in is not processed in time, causing the thorn tip to become dull, or the thorn tip is sharp but has a curved shape, and the warp or weft yarns are hooked and pulled. break.
(5) The licker-in roller in the side support basin is blocked by short yarn waste, sizing, falling objects, etc., which affects the flexibility of the licker-in roller, causing the speed of the licker-in roller and the cloth surface to be inconsistent, causing the thorn tip to cut the weft yarn, resulting in an edge. Support defects.
(6) The temple box is poorly matched and the joints of the temple box covers (L47, L50) and temple box seats (L46, L49) are large or skewed.
① If the joint is too small (less than the specified value (0.8mm)), the surrounding angle of the fabric to the licker-in will increase, and the inclination angle of the licker-in will also increase, which will increase the penetration depth, make it difficult to remove the thorns, and easily cause side brace defects; On the contrary, the joint is too large (greater than the specified 0.8 mm), it is also easy to cause the warp and weft yarns to be cut to form side bracing defects or open edges. The seams vary in size. The larger end of the seam is deburred early and the smaller end is deburred later, causing the fabric to be deburred. The speed difference causes cutting phenomenon
⑦The internal assembly of the temple box does not meet the specifications. The middle ribs of the temple box cover (L47, L50) are not parallel to the front and rear rows of lick-in rollers, which affects the two rows of lick-in rollers in the temple box and the wrapping angles of the finished fabric. This results in two The speed difference between the licker-in rollers can easily lead to side brace defects or chipping.
(7) The bristle iron sheet of the fabric rolling licker-in roller (L00-1) is too sharp, sharp or the puncture holes are worn out slowly, which will also cause side braces. Defects.
(8) Improper temperature and humidity adjustment in the weaving workshop can easily cause large area side brace defects, especially when weaving viscose fabrics. C3) The up and down movement is too large, the warp saw gear support head (B23, B24, B25) is worn out, and the warp tension is suddenly tight and loose, which is prone to regular side support defects.
(10) Cloth.If the surface tension is too tight and the licker-in roller (L55-L58) is slightly caught, temple defects will also occur.
(22) During the cloth dropping operation, due to the large diameter of the wooden roller, it is easy to rub against the bristle iron sheet on the cloth take-up roller, resulting in damaged cloth similar to temple support.
(12) Place the screw head on the temple box cover and the front clamp of the collision box cap (Q22) or the iron rod of the collision anti-shuttle device. .
(13) Improper operation of pulling the edge of the fabric into the temple box by hand after flat rolling or removing the fabric.
There are many factors that cause temple defects. The main reasons are as follows:
(1) The position of the temple box is too high or too low, and the full width of the fabric is not on the same horizontal line, causing the edges of the fabric on both sides to protrude outward and the fabric body to be concave inward. During beating-up, the fabric body is affected by the beating-up force and causes the fabric to jump. However, the finished fabric in the temple box cannot move due to the extension of the take-in roller, which generates relative torque and easily causes a large number of temple defects.
(2) The fabric surface tension is too high, and the warp yarns are close to the temple licker-in, causing the thorn tips to cut the warp and weft yarns. Most of the temple defects are regular fabric defects.
(3) Fabrics with wider width or larger weft shrinkage are more likely to produce side bracing defects. When the cloth on both sides of the fabric leaves the side support rollers, it shrinks to the center of the fabric body due to the loss of the width of the side support rollers. The spines of the side support rollers exert transverse tension on the fabric structure, resulting in cutting. Warp opportunity.
(4) The temple licker-in is used improperly, or the newly purchased temple licker-in is not processed in time, causing the thorn tip to become dull, or the thorn tip is sharp but has a curved shape, and the warp or weft yarns are hooked and pulled. break.
(5) The licker-in roller in the side support basin is blocked by short yarn waste, sizing, falling objects, etc., which affects the flexibility of the licker-in roller, causing the speed of the licker-in roller and the cloth surface to be inconsistent, causing the thorn tip to cut the weft yarn, resulting in an edge. Support defects.
(6) The temple box is poorly matched and the joints of the temple box covers (L47, L50) and temple box seats (L46, L49) are large or skewed.
① If the joint is too small (less than the specified value (0.8mm)), the surrounding angle of the fabric to the licker-in will increase, and the inclination angle of the licker-in will also increase, which will increase the penetration depth, make it difficult to remove the thorns, and easily cause side brace defects; On the contrary, the joint is too large (greater than the specified 0.8 mm), it is also easy to cause the warp and weft yarns to be cut to form side bracing defects or open edges. The seams vary in size. The larger end of the seam is deburred early and the smaller end is deburred later, causing the fabric to be deburred. The speed difference causes cutting phenomenon
⑦The internal assembly of the temple box does not meet the specifications. The middle ribs of the temple box cover (L47, L50) are not parallel to the front and rear rows of lick-in rollers, which affects the two rows of lick-in rollers in the temple box and the wrapping angles of the finished fabric. This results in two The speed difference between the licker-in rollers can easily lead to side brace defects or chipping.
(7) The bristle iron sheet of the fabric rolling licker-in roller (L00-1) is too sharp, sharp or the puncture holes are worn out slowly, which will also cause side braces. Defects.
(8) Improper temperature and humidity adjustment in the weaving workshop can easily cause large area side brace defects, especially when weaving viscose fabrics. C3) The up and down movement is too large, the warp saw gear support head (B23, B24, B25) is worn out, and the warp tension is suddenly tight and loose, which is prone to regular side support defects.
(10) Cloth.If the surface tension is too tight and the licker-in roller (L55-L58) is slightly caught, temple defects will also occur.
(22) During the cloth dropping operation, due to the large diameter of the wooden roller, it is easy to rub against the bristle iron sheet on the cloth take-up roller, resulting in damaged cloth similar to temple support.
(12) Place the screw head on the temple box cover and the front clamp of the collision box cap (Q22) or the iron rod of the collision anti-shuttle device. .
(13) Improper operation of pulling the edge of the fabric into the temple box by hand after flat rolling or removing the fabric.
Extended reading: https://www. alltextile.cn/product/product-27-744.html
Extended reading: https://www.tpu-ptfe.com/post/9320.html
Extended reading:https://www.alltextile.cn/product/product-69-459.html
Extended reading:https://www.alltextile.cn/product/product-4-124.html
Extended reading: https://www.alltextile.cn/product/product-17-43.html
Extended reading:https://www.tpu-ptfe.com/post/3321.html
