1. Eating the top piece means that the top piece of two-layer fabric goes faster than the bottom piece of fabric, while eating the bottom piece means that the bottom piece of two-layer fabric goes faster than the top piece of fabric. This problem is mainly related to the position of the feeding dog. If the feeding dog is too close to the front center point to feed the cloth, the piece will be eaten, that is, the upper piece of fabric will go slower than the lower piece of fabric. If the feed dog is too far behind the center point to feed the cloth, the upper piece will be eaten, that is, the upper piece of fabric will go faster than the lower piece of fabric. Therefore, it is necessary to adjust the front and rear positions of the cloth feeder according to the thickness of the fabric to solve the problem of the sewing machine eating the film, and then also pay attention to whether the cloth feeder is too high. If it is too high, the friction of the fabric underneath is too high, and the film will be eaten.
2. Even if the pressure of the presser foot is too high, the upper and lower fabrics will be misaligned, causing the film to be eaten, so adjust the pressure of the presser foot.
Summarize the above key points
1. Adjust the front and back position of the feeding tray
2. Adjust the pressure of the presser foot
