Plastics bags production
    51.
    发明授权
    Plastics bags production 失效
    塑料袋生产

    公开(公告)号:US4300892A

    公开(公告)日:1981-11-17

    申请号:US076440

    申请日:1979-09-17

    摘要: In the production of plastics bags, especially valved bags, from a web of plastics material by folding in the side margins of the web to form overlapping panels which are then longitudinally heat-sealed together for a major portion of one bag length, and then heat-sealing the web transversely and severing the web at intervals to produce individual bags, the two overlapping panels are heat-sealed together by forming two longitudinal seals which partially overlap to provide a forward longitudinal seal and a rear longitudinal seal with respect to the direction of travel of the web, the rear longitudinal seal of each bag being formed simultaneously with the forward longitudinal seal of the adjacent following bag. The apparatus comprises a pair of heat-sealing elements equipped for simultaneous operation and arranged for forming the rear seal in one bag and the forward seal in the following adjacent bag. The two elements may be a fixed distance apart, and at least one has suitably a hairpin shape.

    摘要翻译: 在通过在幅材的侧边缘折叠以形成重叠面板的塑料材料的卷材生产塑料袋,特别是阀袋中,然后将其纵向热密封在一起,使其长度大于一个袋子的长度,然后加热 - 横向地切割腹板并且间隔切断腹板以产生单独的袋子,通过形成两个纵向密封件将两个重叠的面板热封在一起,所述两个纵向密封件部分地重叠以提供相对于 腹板的行进,每个袋的后纵向密封件与相邻的后袋的前纵向密封同时形成。 该装置包括一对装配用于同时操作并被设置成用于在一个袋子中形成后密封件并且在随后的相邻袋子中的前密封件的热封元件。 两个元件可以是固定的距离,并且至少一个元件具有合适的发夹形状。

    Process for spinning bicomponent filaments
    53.
    发明授权
    Process for spinning bicomponent filaments 失效
    双组分纺丝方法

    公开(公告)号:US4293516A

    公开(公告)日:1981-10-06

    申请号:US162354

    申请日:1980-06-24

    申请人: Paul C. Parkin

    发明人: Paul C. Parkin

    IPC分类号: D01D5/34 D01D5/22

    摘要: A spinning assembly for use in a process for the production of sheath/core bicomponent fibers comprising a spinneret plate having at least one counter-bore terminating in an extrusion orifice, a distributor plate spaced apart from but facing the spinneret plate to provide a liquid channel therebetween for communication with a source of sheath-forming material, the distributor plate being provided with an aperture opposite each orifice in the spinneret plate for communication with a source of core-forming material and a plateau-like protrusion on the distributor plate extending about the axis common to the aperture and the extrusion orifice characterized in that there is provided an orifice plate for restricting the entrance to the counter-bore.

    Radiation method and assembly for assessing web parameters
    54.
    发明授权
    Radiation method and assembly for assessing web parameters 失效
    用于评估网络参数的辐射方法和装配

    公开(公告)号:US4292536A

    公开(公告)日:1981-09-29

    申请号:US62225

    申请日:1979-07-27

    申请人: Ivor Cameron

    发明人: Ivor Cameron

    CPC分类号: G01N21/86 G01B11/0691

    摘要: The invention relates to an assembly and method for assessing a radiation-sensitive web parameter, such as the thickness of a polymeric film, by passing a web inwardly along a first path and withdrawing the web along a substantially parallel second path between a radiation source (25) and detector (26) mounted on the respective limbs (12, 13) of a stirrup cradle (10), monitoring radiation transmitted through both thicknesses of the web, and, preferably, traversing the cradle across the web paths. The invention enables a constant spatial relationship to be maintained between the source and detector, thereby improving the accuracy of the measurement technique, and is particularly suitable for assessment of the thickness of polymeric packaging films.

    摘要翻译: 本发明涉及一种用于评估辐射敏感纤维网参数(例如聚合物膜的厚度)的组合和方法,通过沿着第一路径向内传送纸幅并沿着辐射源(基本上平行的第二路径)抽出纸幅, 25)和安装在蹬架(10)的相应的肢体(12,13)上的检测器(26),监测通过幅材的两个厚度传播的辐射,并且优选地跨过纸幅路径穿过托架。 本发明能够在源和检测器之间保持恒定的空间关系,从而提高测量技术的精度,并且特别适合于评估聚合物包装膜的厚度。

    Modification of liquid hydrocarbons
    55.
    发明授权
    Modification of liquid hydrocarbons 失效
    液态烃的改性

    公开(公告)号:US4292045A

    公开(公告)日:1981-09-29

    申请号:US146411

    申请日:1980-05-05

    摘要: Specified copolymers of tert-butylstyrene are dissolved in a liquid aliphatic hydrocarbon fuel, especially an aircraft fuel, by the steps of (i) blending the finely-divided copolymer with a non-solvent hydroxylic liquid miscible with the fuel, (ii) mixing the blend into the fuel so as to give a copolymer concentration of 0.1-1% by weight, and (iii) dissolving in the fuel so treated an amino compound in an amount of 0.01-0.6 mole per 100 g of copolymer present. The copolymers thus dissolved impart to the fuel a resistance towards mist formation when the fuel is subjected to conditions of shock.

    摘要翻译: 通过以下步骤将叔丁基苯乙烯的指定共聚物溶解在液体脂族烃燃料,特别是飞机燃料中:(i)将细分散的共聚物与可与燃料混溶的非溶剂羟基液体混合,(ii)将 混合成燃料,以使共聚物浓度为0.1-1重量%,和(iii)将溶解在待处理的燃料中的氨基化合物的量为0.01-0.6摩尔/ 100g存在的共聚物。 因此,当燃料受到冲击的条件时,由此溶解的共聚物赋予燃料对雾形成的阻力。

    Coulter device for direct seed drills
    56.
    发明授权
    Coulter device for direct seed drills 失效
    用于直接种子钻的库尔特装置

    公开(公告)号:US4289081A

    公开(公告)日:1981-09-15

    申请号:US970875

    申请日:1978-12-18

    申请人: Paul Koronka

    发明人: Paul Koronka

    IPC分类号: A01C5/06 A01C7/20

    CPC分类号: A01C7/20 A01C5/064 Y02P60/16

    摘要: A coulter arrangement and associated drill are provided that are useful in all types of soil, minimize dragging of vegetation into the seed slots, and insure sufficient covering of seed with soil. First and second dished discs are located on frame members, the second disc intercepting the soil displaced by the frist disc. A third dished disc having concave and convex faces and smaller in diameter than the first disc is mounted on another frame member. The third disc is mounted with respect to the first disc and a seed delivery tube so that the third disc removes trash and plant debris from the slot cut by the first disc, and guides seeds from the seed delivery tube directly into the slot.

    摘要翻译: 提供了一种在所有类型的土壤中有用的仓库安排和相关的钻探,尽量减少植被进入种子槽的拖曳,并确保种子与土壤的充分覆盖。 第一和第二盘形盘位于框架构件上,第二盘盘拦截被叶片移动的土壤。 具有凹形和凸面并且直径小于第一盘的第三碟形盘安装在另一框架构件上。 相对于第一盘和种子输送管安装第三盘,使得第三盘从由第一盘切割的槽中移除垃圾和植物碎屑,并将种子从种子输送管直接引导到槽中。

    Spinning process and apparatus
    57.
    发明授权
    Spinning process and apparatus 失效
    纺纱工艺和设备

    公开(公告)号:US4288397A

    公开(公告)日:1981-09-08

    申请号:US138546

    申请日:1980-04-09

    IPC分类号: C03B37/04 D01D5/18 B29C6/00

    CPC分类号: C03B37/045 D01D5/18

    摘要: Process and apparatus for centrifugally spinning a fibre-forming material, e.g. a urea-formaldehyde resin, in which the fibre-forming material is supplied in liquid form to the interior of a spinning cup wherein it is divided into separate streams which are led to the outlets of passages through the wall of the spinning cup.

    摘要翻译: 用于将成纤材料例如离心纺丝的方法和设备 脲醛树脂,其中纤维形成材料以液体形式供应到旋转杯的内部,其中它被分成分离的流,其被引导到通过旋转杯的壁的通道的出口。

    Process for the manufacture of halogenated hydrocarbons
    58.
    发明授权
    Process for the manufacture of halogenated hydrocarbons 失效
    制造卤代烃的方法

    公开(公告)号:US4285778A

    公开(公告)日:1981-08-25

    申请号:US149987

    申请日:1980-05-15

    CPC分类号: C07C17/25

    摘要: 2,2-Dichloro-5-methyl-1,1,1-trifluorohex-4-ene, an intermediate in the synthesis of pyrethroid insecticides, is obtained by continuous distillation, preferably under sub-atmospheric pressure, of a mixture of 5-methyl-2,2,4-trichloro-1,1,1-trifluorohexane, dimethylformamide and lithium bromide, precipitating the chlorofluorocarbons from the distillate with water and separating the desired product from starting material by a further distillation.

    摘要翻译: 通过连续蒸馏,优选在大气压下连续蒸馏除虫菊酯类杀虫剂的中间体2,2-二氯-5-甲基-1,1,1-三氟己-4-烯,得到5- 甲基-2,2,4-三氯-1,1,1-三氟己烷,二甲基甲酰胺和溴化锂,用水从馏出液中沉淀氯氟烃,并通过进一步蒸馏将所需产物与原料分离。