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cnHow is grey cloth woven? It is woven by a circular machine, and the undyed fabric is also a semi-finished fabric. So what is the production process of the fabric and the production process of the grey fabric?
The production process of grey fabric is as follows:
The production process of white blank fabric
Winding → warping → sizing → reed → weaving.
The tasks of each production process
1. The task of the winding process.
2. The original yarn delivered by the spinning mill is made into a package with a larger capacity.
3. Check the yarn and remove the yarn defects.
4. The yarn is wound into a uniform and firm bobbin under a certain tension, so that the warp tension is consistent during warping.
5. The task of the warping process: according to the requirements of the process design, a certain number of warp yarns are wound on the warp beam in parallel and evenly according to the specified length.
6. The task of the sizing process: improve the weavability of the warp yarn of the fabric, improve the strength of the yarn, and reduce the breakage.
7. The task of the reed threading process: the warp yarn wound on the weaving shaft is threaded into the heddle eye and the steel reed according to the requirements of the process design to meet the needs of the weaving process.
8. The weaving process of the fabric weaving process includes: opening, weft insertion, beating-up, winding and warping.
The quality assessment of grey fabrics is as follows:
1. Fabric weave
When a fabric is evaluated, it first sees whether it meets the design requirements. If it does not meet and the outdated fabric is automatically downgraded.
2. Fabric width
The deviation of the width of the first-class fabric and the first-class fabric from the specified value cannot exceed +1.5% ~ 1.0%. If it exceeds the above range but is within +2.0% ~ 1.5%, it can be rated as second-class fabric, otherwise it will be rated as third-class fabric Equivalent fabric.
3. Density of grey cloth
The warp density deviation of the first-class and first-class fabrics should not exceed -1.5%, and the weft density deviation should not exceed -1.0%
(1) Breaking strength (2) Neps impurity defect (3) Fabric defect
4. The post-processing procedure of grey fabric is as follows:
1. Bleached fabrics: clean grey fabrics.
2. Fabric dyeing: High temperature dyeing is adopted to absorb the characteristics of different colored fabrics according to different warp and weft materials.
3. Fabric setting: It is an essential link that the fabric will be smoother and softer after this process.
4. Fabric finishing: There are many finishing processes, mainly to change the appearance and performance of the fabric.
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