medical cloth
一种医疗用、布帛的技术,应用在医药科学、血管、假体等方向,能够解决低透水性和撕裂强度等问题,达到透水率小、厚度薄、实现细径化的效果
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Embodiment 1
[0205]
[0206] Polyethylene terephthalate (PET) was used as a raw material, and melt spinning was performed to wind up an undrawn yarn of 65 decitex.
[0207] The properties of the raw material PET polymerized with the germanium catalyst are as follows.
[0208] Reduced viscosity (ηsp / c): 1.162dl / g
[0209] Titanium content: 2ppm
[0210] Diethylene glycol content: 0.8% by weight
[0211] Oligomer content: 1.2% by weight
[0212] The spinneret holes used were 5-layered spinneret holes with a hole diameter of 0.08 mmφ, the distance between the innermost jet nozzles was 1.7 mm, and the distance between all the rows was 8 mm. The cooling of the filaments basically used a cooling air jetting device having a jetting outlet at an elevation angle of 37°. In addition, under the spinning conditions (the surface temperature of the spinneret hole is 303°C, the temperature distribution of the spinneret hole is 3°C, the length of the hot zone is 36mm, the temperature of the cooling ai...
Embodiment 2
[0222]
[0223] Polyethylene terephthalate (PET) was used as a raw material, and melt spinning was performed to wind up an undrawn yarn of 140 decitex. Microfibers were produced under the same conditions as in Example 1.
[0224]
[0225] By the above-mentioned spinning, a total fineness of 72.4 dtex / 450 filaments was produced as a weft.
[0226] The total fineness used in the warp yarn is 34.1 dtex / 24 filaments, the appropriate spinneret holes are selected, melt spinning is performed, and the draw ratio is set to produce.
[0227]
[0228] Using a known twister, warp yarns were twisted 500 times / m (S direction twist) and weft yarns were twisted 100 times / m (S direction twist) to produce twisted yarns.
[0229]
[0230] Using the above-mentioned warp and weft, under the same conditions as in Example 1, a flat-woven tubular seamless fabric with an inner diameter of 50 mm was produced. Furthermore, scouring and heat setting are performed on this fabric to perform finis...
Embodiment 3
[0232]
[0233] Microfibers were produced under the same conditions as in Example 1.
[0234]
[0235] By the above-mentioned spinning, a total fineness of 20.1 dtex / 155 filaments was produced as a weft. Spinning was performed under the same conditions as in Example 2. As the warp, a total fineness of 34.1 decitex / 24 filaments was produced.
[0236]
[0237] Using a known twister, warp yarns were twisted 500 times / m (S direction twist) and weft yarns were twisted 100 times / m (S direction twist) to produce twisted yarns.
[0238]
[0239] Using the above-mentioned warp and weft, under the same conditions as in Example 1, a flat-woven tubular seamless fabric with an inner diameter of 50 mm was produced. Furthermore, scouring and heat setting are performed on this fabric to perform finishing. The evaluation results of the obtained fabrics are shown in Tables 1 and 2 below.
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