Welcome to Qinsun Instruments Co., Limited.
- +86-21-6780 0179 |
- info@qinsun-lab.com |
- Customer Services
The properties of bamboo charcoal polyester fiber fabrics, such as air permeability, elasticity, drapability, etc., directly affect the comfort and aesthetics of the human body when worn, so the study of fabric properties also has important theoretical value and practical meaning. These properties are closely related to factors such as the fiber type and the tightness of the yarn. The fabric air permeability tester can be used to test the air permeability of bamboo charcoal polyester fiber fabrics.QINSUN is the manufacturer.Welcome customers who have questions.
Sample development:
According to the test plan, referring to the specifications of the main bamboo charcoal polyester fiber woven fabrics on the market, the bamboo charcoal polyester fiber samples were made, warped Tension, tension of warp yarn and weft yarn during weavingbe well controlled, otherwise the weaving effect will be affected, and the following points should be paid attention to when weaving:
(1) Since it is manual warping, try to achieve warping tension Evenly, the warp length difference should not be too large , otherwise the gap will not be obvious during weaving, which will easily lead to an increase in the breaking rate of the warp yarn and affect the test results.
(2) During weaving, if the warp tension appears to be too large or too small, press the buttons on the loom to wind up the fabric, return the fabric, loosen the warp release and rewind or click the roller button on the computer screen with the mouse. Cloth, pull back fabric, release chain and rewind to adjust the chain tension to a suitable level.
(3) The tension of the weft yarn should also be appropriate during weaving. If the tension is too high, it will be difficult for the gripperto insert the weft; , and the tension is too small, it is difficult for the fabric to hold the weft yarn and ensure that the weft yarn is continuously cut. Adjust the nut on the tension disc on the weft breaking automatic darning device to make the tension of the weft yarn moderate.
Experimental results:
The air permeability of the fabric is essentially the state of the air on both sides of the substance at a given pressure difference. Down, the process of flowing through the fabric from the higher pressure side to the lower pressure side. Gas can pass through the fabric in two ways: one is through the interlaced gaps of the fabric's warp and weft yarns, and the other is through the gaps between the fibers. Therefore, the air permeability of a fabric mainly depends on the size and number of voids in the fabric, and is also related to factors such as fiber properties,fabric geometry and finish.
Under normal circumstances, when the structure of the fabric is the same, the structural factors affecting the air permeability of the fabric are mainly the overall density of the fabric, the warp and weft density ratio, and the linear density of the warp and weft yarns. Fabric sample of bamboo charcoal polyester fiber under the same fabric structure and raw material thickness, the density of the fabric becomes the main factor affecting air permeability
Factors.
With the increase of the total density and weft density, the air permeability of the fabric shows a downward trend. This is because as the weft density of the fabric increases, the density of the arrangement of the yarns in the fabric increases and the overall density of the fabric increases., the void area of the fabric decreases and the air passages formed betweenn the yarns become smaller, resulting in an increase in the viscous resistance of air flowing perpendicular to the fabric, reducing the air permeability of the fabric. But when the tightness increases to a certain level, the pores of the fibers in the yarn are already very small, and increasing the density of the weft yarn can only increase the extrusion of the fabric on the yarn, while the pores have very little change, and the decrease in air permeability is also reduced upwards.
