Multicomponent fibers and fabrics made using the same
A multi-component, fiber technology, applied in the direction of fabric, conjugated synthetic polymer rayon, textile, etc., can solve the problem of not providing abrasion resistance, etc.
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example 1
[0081] This example illustrates the advantages of using fibers formed from various multipolymer systems in the production of low-fluff, high-stretch spunbond nonwoven A conventional spunbonded nonwoven fabric made of structured polypropylene was compared. Continuous filament spunbond nonwoven fabrics were produced using different combinations of multipolymer mixtures under approximately the same conditions, as follows: Sample A: a 26 g / m 2 A spunbonded fabric comprising 96% isotactic polypropylene and 4% polyethylene (Dow05862N); sample B: a 33 g / m 2 A spunbonded fabric comprising 76% isotactic polypropylene, 20% propylene copolymer (Montell KS057P) and 4% polyethylene (Dow05862N); sample C: a 33g / m 2 The spun-bonded fabric, which includes 85% polyethylene (Dowlex2553) and 15% ethylene-propylene copolymer (Amoco8352); sample D: a 60g / m 2 The spunbond-meltblown-spunbond composite fabric is composed of two-component filaments (the core is polyester and the sheath is polyethyle...
example 2
[0086]90% by weight of linear low density polyethylene (LLDPE) with a melt flow rate of 27 (Dow6811LLDPE) and 10% by weight of polypropylene (PP) polymer with a melt flow rate of approximately 35 (Aristech CP350J) Dry mixing was performed in a rotary mixer. The dry blended mixture is then conveyed to the feed hopper of the spunbond nonwoven spinning system. Continuous filaments are melt-spun at a filament-forming speed of about 600m / min through a slit drawing process, and deposited on the coalescing surface to form a spunbonded non-woven fiber web, and the fiber web adopts a patterned The calender rolls were thermally bonded together with a bond area of 12%. For comparison purposes, nonwoven spunbond fabrics were produced from the exact same polymers under similar conditions using 100% PP and 100% LLDPE.
[0087] As shown in Table 2, the 100% LLDPE spunbond sample exhibited higher softness (75 and 77.5) relative to the 100% polypropylene spunbond sample (30). However, the...
example 3
[0095] Example 3 (controller)
[0096] A control fiber was produced by feeding 100% Dow2500LLDPE (55 MI, density 0.923) into the feed hopper of a spinning system with an extruder, a polymer flow rate controlled at A gear pump of 0.75 grams per minute per hole, and a spinneret with 34 holes each having an aspect ratio L / D = 4:1 and a hole diameter of 0.2 mm. Spinning was performed using a temperature of 215°C in the extruder and a solid packmelt temperature of 232°C. After air cooling, the resulting filaments are drawn down at approximately 1985 m / min using an extraction gun operating at 100 psig to produce 3.01 denier and 0.41 Standard Daniel Deviation.
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