Date post: | 03-Apr-2018 |
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Inside Down comes out
The down comes out through the needle hole and tied thread (stitch).
Check the thickness of the needle and thread.
Use a thinner needle when the needle is too thick for the thread.
Checking needle point
1. Compare a damaged needle point with a normalone using a loupe and microscope.
2. You might find the damage using your finger as shown to the right( .
extreme care to protect your finger. Touch a damaged needle point with
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Needle Breakage
Checking the attachment direction
Check the bottom of the scarf, the needle eye and
the groove using a loupe to insert the needlecorrectly.
Without a loupe, fingering on the needle eye as
shown to right makes it easy to find the needle eye
direction.
Touch the needle eye with extreme care to
protect your finger from the needle point.
When needle with PD coating is advisable
Use "PD" coating needle Select a suitable "Ball point" needle
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Checking needle point
1. Compare a damaged needle point with a normal one using a loupe and microscope.2. You might find the damage using your finger as shown to the right( .
Touch a damaged needle point with extreme care to protect your finger.
Checking the bend
Roll some needles together as shown to right. Compared to the point of the unbending needles, the pointof the bending needles move from side to side.
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Pulling Linings out of needle holes
Checking needle point
1. Compare a damaged needle point with a normal one using a loupe and microscope.2. You might find the damage using your finger as shown to the right( .
Touch a damaged needle point with extreme care to protect your finger.
Needle point shape and Pulling Linings out of needle holes
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Fabric Yarn Breakage
Checking needle point
1. Compare a damaged needle point with a normal one using a loupe and microscope.2. You might find the damage using your finger as shown to the right( .
Touch a damaged needle point with extreme care to protect your finger.
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Needle heat problem
In the event of material damage by needle heat...
Remove the thread in the fabric, and one of the melted yarns might stick to the others.
The melted yarns might stick to the needle.
Needle point shape and Yarn of material
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Needle Line
Needle line, material and yarn
When the cause is related to the material, the features of the material are as follows:
Unstable yarn
(Straight fabrics)
(Difference in structure and density between the warp and weftl A)
(Loose yarn with an open structure B)
Visible yarn movement
(Difference in color between the warp and weft C)
(Non-dyed part inside the material)
*In the event of this material, "Needle line" might occur during the sewing process.
When the cause is related to the material or the thread, it is difficult to solve
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the problem only by correcting the needle.
Checking needle point
1.
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Skipped Stitches
Checking the attaching direction
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Check the bottom of the scarf, theneedle eye and the groove using aloupe to insert the needlecorrectly.Without a loupe, fingering on the
needle eye as shown to rightmakes it easy to find the needleeye direction.
Touch the needle eye withextreme care to protect your finger from the needle point.
When needle with PD coating is advisable
Use "PD" coating needle Select a suitable "Ball point" needle
Checking needle point
1. Compare a damaged needle point with a normal one using a loupe and microscope.2. You might find the damage using your finger as shown to the right( .
Touch a damaged needle point with extreme care to protect your finger.
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Seam Puckering
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Possible causes
Uneven material feeding*The problem is not able to be solved only by changing the needle.
Checking needle point
1. Compare a damaged needle point with a normal one using a loupe and microscope.2. You might find the damage using your finger as shown to the right( .
Touch a damaged needle point with extreme care to protect your finger.
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Protrusion
Checking needle point
1. Compare a damaged needle point with a normal one using a loupe and microscope.2. You might find the damage using your finger as shown to the right( .
Touch a damaged needle point with extreme care to protect your finger.
Needle point shape and Protrusion
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Melt / Adhesion
Needle-heat problem