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公开(公告)号：US07140855B2
公开(公告)日：2006-11-28
申请号：US10503053
申请日：2003-01-21
申请人： Koji Watanabe , Shinji Murakami , Hisashi Kojoh
发明人： Koji Watanabe , Shinji Murakami , Hisashi Kojoh
IPC分类号： B28B5/00
CPC分类号： B29C47/883 , B29C47/0026 , B29C47/0057 , B29C47/0059 , B29C47/8835 , B29C47/8895 , B29C47/92 , B29C2035/1616 , B29C2947/92514 , B29C2947/92619 , B29C2947/92647 , B29C2947/92657 , B29C2947/9279 , B29C2947/92923 , B29K2021/00 , B29L2023/001
摘要： An internal mandrel for cooling a tubular thin film is disclosed where an air layer is eliminated in the lower side cooler of the internal mandrel, so that the tubular thin film can be continuously and stably produced. In the internal mandrel for directly cooling the tubular thin film while using external circularly shaped cooling tank where the tubular thin film is downwardly extruded through a circular slit of the die, the internal mandrel is characterized in that coolant for cooling a lower most part of the internal mandrel is flown in the countercurrent direction in the internal mandrel to the tubular thin film.
摘要翻译： 公开了一种用于冷却管状薄膜的内部心轴，其中在内部心轴的下侧冷却器中消除空气层，从而可以连续且稳定地制造管状薄膜。 在用于直接冷却管状薄膜同时使用外部圆形冷却槽的内部心轴中，其中管状薄膜通过模具的圆形狭缝向下挤出，内部心轴的特征在于用于冷却管状薄膜的较低部分的冷却剂 内部心轴在内部心轴中沿逆流方向流动到管状薄膜。
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公开(公告)号：US20050100623A1
公开(公告)日：2005-05-12
申请号：US10503053
申请日：2003-01-21
申请人： Koji Watanabe , Shinji Murakami , Hisashi Kojoh
发明人： Koji Watanabe , Shinji Murakami , Hisashi Kojoh
CPC分类号： B29C47/883 , B29C47/0026 , B29C47/0057 , B29C47/0059 , B29C47/8835 , B29C47/8895 , B29C47/92 , B29C2035/1616 , B29C2947/92514 , B29C2947/92619 , B29C2947/92647 , B29C2947/92657 , B29C2947/9279 , B29C2947/92923 , B29K2021/00 , B29L2023/001
摘要： The object of the present invention is to provide an internal mandrel for cooling a tubular thin film where air layer is not remaining in the lower side cooler of the internal mandrel, so that the tubular thin film can be continuously and stably produced. In the internal mandrel for directly cooling the tubular thin film while using external circularly shaped cooling tank where the tubular thin film is downwardly extruded through a circular slit of the die, the internal mandrel is characterized in that coolant for cooling a lower most part of the internal mandrel is flown in such a direction as to oppose to the tubular thin film.
摘要翻译： 本发明的目的是提供一种用于冷却管状薄膜的内部心轴，其中空心层不保留在内部心轴的下侧冷却器中，从而能够连续稳定地制造管状薄膜。 在用于直接冷却管状薄膜同时使用外部圆形冷却槽的内部心轴中，其中管状薄膜通过模具的圆形狭缝向下挤出，内部心轴的特征在于用于冷却管状薄膜的较低部分的冷却剂 内心轴以与管状薄膜相对的方向流动。
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公开(公告)号：US4983337A
公开(公告)日：1991-01-08
申请号：US381713
申请日：1989-06-30
摘要： This invention relates to a tubular stretching method for producing a stretched film by passing a tubular thermoplastic resin film between pairs of nip rolls having mutually different peripheral speeds and by inflating the tubular film with internal pressure under heating and a stretching apparatus to be employed therefor. The pairs of nip rolls include at least three pairs of nip rolls. Pressurized air is admitted into a stretched bubble situated between the first and second rolls through a slit-like air injecting nozzle, and the bubble formed by the supplied pressurized air is inflated and stretched under heating. In this stage, if desired, the amount of injected pressurized air is controlled by manual or automatic control by detecting the diameter of the bubble so as to keep the bubble's diameter constant. After stretching, the tubular film is collapsed and is introduced to the second nip rolls. Both side ends of the collapsed film are cut open with film cutting knives to make two sheets of flat films. Then, the flat films are introduced to left and right guide rolls so as to avoid interference with the slit-like injecting nozzle and the cutting knives. Finally, the films are drawn with third nip rolls. In the apparatus of the present invention, the diameter and internal pressure of the bubble can be controlled with manual or automatic control even during tubular stretching, and particularly, the apparatus can be suitable applied to tubular stretching of porous films.
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公开(公告)号：US4968464A
公开(公告)日：1990-11-06
申请号：US188566
申请日：1988-04-29
CPC分类号： C08J5/18 , B29C55/005 , B29K2019/00 , B29K2023/00 , B29K2067/00 , B29K2105/04 , B29K2995/0065 , C08J2323/02
摘要： A process for producing a porous resin film containing a polyolefin resin as a main component, comprising meltinig a mixture of (A) 100 parts by weight of a polyolefin resin, (B) 0 to 50 parts by weight of a polyester-polyether type thermoplastic elastomer, and (C) a thermoplastic polyester resin having an instrinsic viscosity of not more than 0.5, the amount of the component (C) being from 25 to 90 part by weight per 100 parts of the total amount of the component (A) and the component (B), by heating the mixture at a temperature of not less than the melting temperature of the component (C); kneading the mixture at a shear rate of not less than 200/sec. while cooling the mixture to a temperature of not more than the crystallization temperature of the component (C) and not less than the melting temperature of the component (A); subjecting the mixture to film-forming at a temperature of less than the melting temperature of the component (C) and not less than the melting temperature of the component (A) and cooling the resultant rapidly to obtain a non-stretched film; and stretching the non-stretched film in at least one direction. The porous film obtained by the process has an excellent water proof and an excellent water vapor permeability.
摘要翻译： 一种制造含有聚烯烃树脂作为主要成分的多孔树脂膜的方法，其包括将（A）100重量份的聚烯烃树脂，（B）0至50重量份的聚酯 - 聚醚型热塑性塑料 弹性体和（C）特性粘度不大于0.5的热塑性聚酯树脂，组分（C）的量相对于组分（A）和（A）的总量的100重量份为25至90重量份，和 组分（B）通过在不低于组分（C）的熔融温度的温度下加热混合物; 以不小于200 /秒的剪切速率捏合该混合物。 同时将混合物冷却至不高于组分（C）的结晶温度并且不低于组分（A）的熔融温度的温度; 在低于组分（C）的熔融温度并且不低于组分（A）的熔融温度的温度下对混合物进行成膜，并迅速冷却，得到非拉伸膜; 并且在至少一个方向上拉伸未拉伸膜。 通过该方法获得的多孔膜具有优异的防水性和优异的水蒸汽渗透性。
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