摘要:
A nonwoven fabric made of filaments, which comprises filaments formed from a fiber-forming thermoplastic polymer and satisfies all of the following conditions (A) to (D). (A) The fiber bundles are present in a range of 5-70 per centimeter in any cross-section parallel to the direction of thickness of the nonwoven fabric. (B) The total area occupied by the fiber bundles is in a range of 5-70% of the cross-sectional area of any cross-section perpendicular to the direction of thickness of the nonwoven fabric. (C) The apparent density is 0.10-0.50 g/cm3. (D) The cut ends of the fibers on the nonwoven fabric surface are present in a range of 5-100 per mm2 of surface area.
摘要翻译:由长丝制成的无纺布,其包含由成纤热塑性聚合物形成的长丝,并且满足以下所有条件(A)至(D)。(A)纤维束的存在范围为5-70厘米 在与无纺布的厚度方向平行的任何横截面中,(B)纤维束占据的总面积在垂直于无纺布的任何横截面的横截面面积的5-70%的范围内 无纺布的厚度方向(C)表观密度为0.10〜0.50g / cm 3(D)无纺织物表面的纤维的切割端以5〜100个/ mm <2>的表面积。
摘要:
Elastic polyester fibers having a high anti-cohesive property (separability) include (A) a polyester elastomer and (B) 0.2 to 10%, based on the weight of the elastomer, of an anti-cohesive agent including (a) at least one alkali metal salt of organic sulfonic acid of the formula: R.sup.1 --S0.sub.3 M, wherein R.sup.1 =C.sub.5-25 hydrocarbon group, M=alkali metal, and (b) at least one compound of the formulae (2)-(6): R.sup.2 --X.sub.p --CH.sub.2 CH.sub.2 OH (2), R.sup.3 --COO--CH.sub.2 CH(OH)CH.sub.2 OH (3), R.sup.4 --COO--(CH.sub.2 CH.sub.2 O).sub.m --H (4), R.sup.5 --O--(CH.sub.2 CH.sub.2 O).sub.n H (5) and R.sup.6 --CONHCH.sub.2 CH.sub.2 NHCO--R.sup.7 (6), wherein R.sup.2 -R.sup.7 =C.sub.5-25 hydrocarbon group, X=--CONY or ##STR1## group, p=0 or 1, m, n=5 to 50.
摘要:
A circuit (20) for converting digital data representing audio as a multiplicity of sample values into an analogue audio signal includes a delay store (22) and a sample store (23). Both stores (22,23) store incoming data. The data in the sample store (23) is processed by a comparator (24) and a synthesizer (25) which generates a correcting signal (33). The same data in the delay store (22) is delayed to permit generation of the correcting signal and is output to a digital to analogue converter (27) where it is converted into a decoded analogue signal. The correcting signal is added to the decoded analogue signal in a mixer (26) to produce a combined signal for output as the analogue audio signal. The decoded analogue signal from the digital to analogue converter (27) does not include clearly defined zero crossing points. The correcting signal includes a zero crossing point and thus the output analogue audio signal from the mixer includes a zero crossing point, which improves the quality of the audio during playback.