When the warp is sizing, the permeability of the slurry […]
When the warp is sizing, the permeability of the slurry is poor, and the sizing rate is low, so that the warp cohesion is poor, and the high-speed reciprocating friction of the heald at the time of weaving cannot be withstood. In addition, the pulp drying efficiency is low, the pulp is not dried, so that the warp moisture content is high, or the slurry has high viscosity. When the weaving shaft is unwound, the warp yarns are adhered and firmly, in the opening process.
The warp yarn is pulled apart to cause damage to the warp film, and the single fiber is pulled to cause the warp yarn to break. Due to factors such as warp yarn pulverization and wool entanglement, the warp yarn is stretched and fatigued to form a warp break.
When the loom is running, the opening height of the warp yarn has a great influence on the warp and the warp. Because the warp yarn is elongated in proportion to the opening height when the loom is opened, the opening height of the loom is large, and the warp yarn is elongated. Large elongation causes fuzzing and breakage of the warp yarn.
When the loom is running, the frictional stroke of the heald has a great influence on the warp yarn passing through the hair. When the heald frame is opened, the warp yarn moves toward the front of the eye, and when the shed is closed, the warp yarn moves backward from the eye. This distance moved back and forth is the friction stroke. The loom continuously runs, the opening and the closed loop are continuously circulated, and the warp yarn is continuously reciprocated and rubbed in the eye. It is also an important link that causes warfare. In particular, the opening height is too large, the opening parts are worn, the heald frame movement is unstable, the healds are moving up and down, the loom speed is fast, and the warp yarn passing through the hair is more serious.