Compact spinning (spinning) with a lattice apron , also known as" the grid: leather ring"," network"," mesh leather ring", is used for compact spinning ( spinning ) is used for bearing the yarn delivery and implementation of cluster a annular fabric.
At present, both international and domestic no lattice apron and relevant product standards, our company in the industry take the lead in the drafting and formulation, implementation of the" Yancheng City hippocampus Textile Machinery Company Limited of compact spinning lattice apron in enterprise standard", was the Ministry, the National Standardization Committee, Shaanxi Textile Research Institute equipment designated as" compact spinning using the lattice apron" Chinese national standards for the textile industry to initiate and drafting unit.
Lattice apron function
The lattice apron is a" conveyor belt", is a" condensation device". It is the task of delivery has been completed the drafting process of yarn of batting, roller continued to output synchronous speed, let the air flow on the fiber bundles of cluster, until entering the twisting zone, requires an appropriate" permeability"," stable" through the air flow.
Void ratio
The lattice apron" permeability" and its" void" is approximately proportional to. Void and filament diameter, and the weft density.
The general grid weaving raw silk is 0.08 mm in diameter, warp, weft density is 56 ~ 60 / cm, theoretical porosity is 27.04%.
The new company structure lattice apron 0.08 mm, warp, weft density: 0.074 mm, 50 / cm, latitude 70 cm, theoretical porosity is 27.14%.
Mesh
The lattice apron is not a screen or mesh, mesh is the function of particle filter material, strict requirements of square mesh size is very correct. And the lattice apron function by airflow, airflow ask shape. Therefore, the mesh can be any shape, can be of different sizes, as long as the uniform distribution, uniform and stable macroscopic flow. Different sizes of mesh, also help to reduce the resistance (in the same void case) and impurity removal, the mesh is not easily blocked.
Friction
Lattice apron by roller (or roller) of the rolling friction drive; the lattice apron friction resistance is -- and a negative pressure pipe friction. These two properties of friction, friction material, friction coefficient of course be quite different, it is not only the characteristics of the lattice apron.
Lattice apron and a negative pressure pipe friction between determinants: the lattice apron and the flexural rigidity of the negative pressure tube surface curvature. In the negative pressure tube under close to Luo La with a" horn", a large curvature, the lattice apron here has the largest friction resistance, known as the" J sharp resistance", which is the main friction resistance. Lattice apron bending stiffness is larger, then the J greater. That is to say: the lattice apron resistance depends largely on its own.
Antistatic
Synthetic fiber materials with very high resistance, to Gigabit (1012 ) ohm order. In textile standards belong to the" antistatic bad" level. For textiles, surface resistance to reach as long as trillion (109 ) ohm orders of magnitude below, it has good antistatic property.
The net ring antistatic has two kinds of methods:
1: antistatic agent treatment method in ultrasonic cleaning, with antistatic agent solution immersion 10-20 minutes. Can make the resistance value is reduced to 109 orders of magnitude, achieve" antistatic good" standard.
2 using the plated carbon filament manufacturing, surface resistance is 106 ohms orders of magnitude below, antistatic performance.
