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公开(公告)号：US4489630A
公开(公告)日：1984-12-25
申请号：US419563
申请日：1982-09-17
申请人： Tokio Okada , Shigezo Kojima , Haruhisa Tani , Kazuhiko Kurihara , Hirosi Yazawa
发明人： Tokio Okada , Shigezo Kojima , Haruhisa Tani , Kazuhiko Kurihara , Hirosi Yazawa
CPC分类号： B26F3/10 , Y10T83/041 , Y10T83/0414 , Y10T83/283 , Y10T83/293
摘要： A method of slitting a continuous thermoplastic film comprises advancing the film longitudinally at a first speed along a peripheral surface of a roll rotating at a peripheral speed equal to or slightly greater than that of the film, and slitting the film while being advanced by pressing cutting edges of a rotating cutter against the peripheral surface of the roll. In order to prevent the cutting edges from being worn out and to form slits of uniform size and shape, the peripheral surface comprises an elastic layer of polymeric material, the cutting edges are heated above a temperature at which the film starts melting, the film and the elastic surface layer are cooled along their contacting surfaces with a cooling liquid, and the cutting edges are rotated at substantially the same peripheral speed as the roll. The invention also includes an apparatus for carrying out the method.
摘要翻译： 切割连续热塑性薄膜的方法包括沿着沿着等于或稍大于薄膜的圆周速度旋转的辊的第一速度纵向推进薄膜，并且通过冲压切割推进薄膜 旋转切割器的边缘抵靠辊的外周表面。 为了防止切削刃磨损并形成均匀尺寸和形状的狭缝，外周表面包括聚合材料的弹性层，切割边缘被加热到膜开始熔化的温度以上，膜和 弹性表面层沿着其接触表面用冷却液体冷却，并且切割刃以大致相同的圆周速度旋转。 本发明还包括一种用于执行该方法的装置。
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公开(公告)号：US3950467A
公开(公告)日：1976-04-13
申请号：US440099
申请日：1974-02-06
CPC分类号： B29C47/905 , B29C47/0026 , B29C47/8895 , B29C47/903 , B29C47/908 , B29C47/0057 , B29C47/0059 , B29C47/8835 , B29L2023/001
摘要： A method for shaping a tubular film in a downward and wet manner is provided in which an extruded tubular film is coagulated in contact with a coagulation liquid which flows down along the inside surface of a cylindrical composite perforated wall composed of a cylindrical perforated wall and cylindrically piled up circular rings of coiled wire provided in a single layer and in contact with the inner surface of said cylindrical perforated wall, provided in a negative pressure chamber connected to the lower part of a coagulation liquid-supplying pool; in this coagulation, coagulation liquid is fully utilized by mixing with a reflux coagulation liquid formed when a part of coagulation liquid once flows out through said wall and is collected in a plurality of coagulation liquid-collecting weirs provided around the outer surface of said wall, and then flows again through said wall to the inside thereof; and said film is drawn downward while being supported on the inner surface of said wall by friction due to suction under negative pressure and taken up by pinch rollers.
摘要翻译： 提供了一种以向下和湿的方式成形管状薄膜的方法，其中挤出的管状薄膜与沿着由圆柱形多孔壁和圆柱形构成的圆柱形复合穿孔壁的内表面向下流动的凝固液体凝结 堆叠设置在单层中并与所述圆柱形穿孔壁的内表面接触的盘绕圆环，设置在连接到凝固液供应池的下部的负压室中; 在该凝结中，通过与一部分凝固液一旦通过所述壁流出而形成的回流凝固液混合，将凝结液充分利用，并收集在设置在所述壁的外表面周围的多个凝固液收集堰中， 然后再通过所述壁流到其内部; 并且所述膜被向下拉，同时由于在负压下的吸力由夹紧辊吸收而被摩擦地支撑在所述壁的内表面上。
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公开(公告)号：US4434128A
公开(公告)日：1984-02-28
申请号：US362844
申请日：1982-03-29
申请人： Tokio Okada , Shigezo Kojima , Haruhisa Tani , Kazuhiko Kurihara , Hirosi Yazawa
发明人： Tokio Okada , Shigezo Kojima , Haruhisa Tani , Kazuhiko Kurihara , Hirosi Yazawa
CPC分类号： B29C55/285 , B29C55/08 , B29C55/16
摘要： A method and apparatus for stretching a thermoplastic polymer film in which the opposite selvages of the film are gripped by gripping means and are stretched transversely during heating by moving the selvages along two divergent arcuate paths lying in the same plane and extending over a predetermined circumferential range from a quater to a half of the full circumference of the circle containing the arcuate paths. In order to avoid drawbacks in the existing equipment such as irregular molecular orientation in and rupture of the film, the longitudinal travel of the film while being stretched is controlled by controlling means so that the central web portion is advanced by substantially the same distance as the gripped film selvages, whereby the amound of longitudinal movement of the film is held always constant throughout the width of the film.
摘要翻译： 一种用于拉伸热塑性聚合物膜的方法和装置，其中膜的相对边缘由夹持装置夹持，并且在加热期间通过沿着位于同一平面中的两个发散的弓形路径移动边缘并在预定的周向范围上延伸 从包含弧形路径的圆的整圆的四分之一到一半。 为了避免现有设备中的缺陷，例如膜的不规则分子取向和破裂，在拉伸时膜的纵向移动通过控制装置来控制，使得中心腹板部分前进大致相同的距离 夹持的薄膜边缘，由此在膜的整个宽度上保持膜的纵向移动的总是恒定的。
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公开(公告)号：US4525317A
公开(公告)日：1985-06-25
申请号：US502976
申请日：1983-06-10
申请人： Tokio Okada , Haruhisa Tani , Shigezo Kojima , Kazuhiko Kurihara , Hirosi Yazawa
发明人： Tokio Okada , Haruhisa Tani , Shigezo Kojima , Kazuhiko Kurihara , Hirosi Yazawa
IPC分类号： D06C5/00 , B29C49/00 , B29C55/00 , B29C55/08 , B29C55/12 , B29C55/16 , B29C55/20 , B29C55/28 , B29L7/00 , B29C17/02
CPC分类号： B29C55/165 , B29C55/085 , B29C55/285 , B29C2793/009
摘要： A film or fibrous web which has been stretched by moving at least two laterally spaced first longitudinal portions gripped by a first gripping means along at least two arcuate divergent paths formed jointly by at least two radially disposed first pulleys and endless belt means trained arcuately therearound, is further stretched by moving at least two laterally spaced second longitudinal portions adjacent to the first longitudinal portions gripped by a second gripping means along at least two arcuate divergent paths contiguous to the first arcuate divergent paths, respectively, formed jointly by at least two second pulleys, respectively, disposed downstream of and close to the first pulleys in coplanar relation thereto and second endless belt means trained arcuately therearound. The film while being stretched is heated to a temperature suitable for stretching with heated air and the like, or is softened by immersing in a bath of solvent or plasticizer.
摘要翻译： 通过移动由第一夹持装置夹紧的至少两个横向间隔开的第一纵向部分的薄膜或纤维网，所述第一纵向部分沿着至少两个由至少两个径向设置的第一滑轮和环形皮带装置共同形成的弧形发散路径而被弧形地训练， 通过分别与由第二夹持装置夹持的第一纵向部分相邻的至少两个横向间隔开的第二纵向部分沿着与第一弧形发散路径相邻的至少两个弧形发散路径进一步拉伸，所述至少两个弧形发散路径由至少两个第二滑轮 分别设置在与其共面关系的第一滑轮的下游并且靠近第一滑轮，并且在其周围锻造的第二环形带装置。 将被拉伸的薄膜加热到适于用加热空气等拉伸的温度，或者通过浸入溶剂或增塑剂浴中而软化。
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