Process for making stretch film having heat-sealed edges
    1.
    发明授权
    Process for making stretch film having heat-sealed edges 失效
    制造具有热封边缘的拉伸膜的方法

    公开(公告)号:US06592699B1

    公开(公告)日:2003-07-15

    申请号:US09429390

    申请日:1999-10-28

    IPC分类号: B31F100

    摘要: A highly stretched film has permanently heat-sealed edges that are nearly invisible. A folding apparatus folds the edge portions of a film to form folded edges. The folded film then is passed through a bridle mechanism having two heated rolls. A series of nips apply pressure to the folded film as it is heated by the heated rolls. The nip pressure, combined with the heat imparted by the heated rolls, causes thermal welding of the folded edges resulting in permanent heat-sealed edges. Because the film edges are folded prior to the hot-stretching, the hot stretch process performs dual functions of stretching the film and heat sealing the folded edges. The resulting stretched film has permanently heat-sealed edges that do no separate, and which prevent tearing of the film edges during subsequent processing and use.

    摘要翻译: 高度拉伸的膜具有几乎看不见的永久热封边。 折叠装置折叠胶片的边缘部分以形成折叠边缘。 然后将折叠的薄膜通过具有两个加热辊的梳齿机构。 一系列胶片在被加热的辊加热时对折叠膜施加压力。 辊隙压力与加热辊所产生的热量相结合,引起折叠边缘的热焊接,导致永久的热封边缘。 由于薄膜边缘在热拉伸之前被折叠,所以热拉伸过程执行拉伸薄膜并热封折叠边缘的双重功能。 所得到的拉伸膜具有永久的热封边缘,其不分离,并且防止在随后的加工和使用期间撕裂薄膜边缘。

    Apparatus and high speed process for making highly stretched film
    2.
    发明授权
    Apparatus and high speed process for making highly stretched film 失效
    用于制造高拉伸膜的装置和高速工艺

    公开(公告)号:US06375781B1

    公开(公告)日:2002-04-23

    申请号:US09429147

    申请日:1999-10-28

    IPC分类号: B32B3100

    摘要: An apparatus and high speed process for heating and stretching a film having a bridle mechanism comprising a first heated roll and a second heated roll. The film is stretched as the film is transferred from the first heated roll to the second heated roll which rotates at a speed greater than the speed at which the first heated roll rotates. The film is fed into the bridle mechanism at a rate of about 1,500 fpm to about 2,500 fpm wherein it is stretched to a length that is up to about 450% greater than its initial, pre-stretched length. The increased contact between the large diameter heated rolls and the film and the short draw gap between the two heated rolls result in a highly stretched film having minimal neck-in.

    摘要翻译: 一种用于加热和拉伸具有包括第一加热辊和第二加热辊的拉链机构的膜的装置和高速方法。 当膜从第一加热辊转移到以比第一加热辊旋转的速度大的速度旋转的第二加热辊时,膜被拉伸。 以约1,500fpm至约2500fpm的速率将膜进料到brid le机构中,其中其被拉伸至比其初始预拉伸长度高达约450%的长度。 大直径加热辊和膜之间的增加的接触和两个加热辊之间的短拉伸间隙导致具有最小颈缩的高拉伸膜。

    Method and apparatus for wrapping and securing stretch film about a load
    6.
    发明授权
    Method and apparatus for wrapping and securing stretch film about a load 失效
    用于围绕负载缠绕和固定拉伸膜的方法和装置

    公开(公告)号:US5802810A

    公开(公告)日:1998-09-08

    申请号:US896315

    申请日:1997-06-28

    IPC分类号: B65B11/02 B65B13/00 B65B53/00

    CPC分类号: B65B11/025 B65B2210/20

    摘要: A method and apparatus for wrapping and securing film about a load by positioning a first arm retaining an end portion of film toward the load, wrapping a layer of film about the first arm so the first arm is between the wrapped film and the load, withdrawing the first arm retaining the film from between the wrapped film and the load, and releasing the end portion of film retained by the first arm to position and secure a first film portion between the wrapped film and the load. The load is further wrapped and a second arm is subsequently positioned toward the load, and a layer of film is wrapped about the second arm so the second arm is between the wrapped film and the load. A roped film portion is captured and retained by the first and second second arms. The roped film is then severed and an end portion of the severed film is retained by the first arm for subsequently wrapping another load. The other end of the severed roped film portion is retained by the second arm, which is withdrawn from between the wrapped film and the load to position and secure a second film portion between the wrapped film and the load. The arms are withdrawn along a relatively straight path by laterally translating the arms while pivoting thereby reducing contact between at least the portion of the arm retaining the film tail and the wrapped film.

    摘要翻译: 一种用于通过将保持膜端部的第一臂定位到负载上来缠绕和固定膜的方法和装置,围绕第一臂缠绕膜层,使得第一臂在包裹的膜和负载之间,抽出 所述第一臂将所述膜保持在所述包裹的膜和所述负载之间,并且释放由所述第一臂保持的所述膜的端部,以将所述第一膜部分定位并固定在所述包膜和所述负载之间。 负载被进一步包裹,并且随后将第二臂朝向负载定位,并且一层膜围绕第二臂缠绕,使得第二臂位于包裹膜和负载之间。 被卷绕的薄膜部分被第一和第二第二臂捕获并保持。 然后将被卷绕的膜切断,并且被切断的膜的端部被第一臂保持以便随后包裹另一个负载。 被切断的被卷绕的薄膜部分的另一端由第二臂保持,第二臂从被包裹的薄膜和负载之间取出,以将第二薄膜部分定位并固定在包裹的薄膜和负载之间。 通过在枢转的同时横向平移臂同时沿着相对直的路径撤回臂,从而减少至少保持膜尾部的臂的部分和包裹的膜之间的接触。

    Zipper strip and method of positioning the strip transverse longitudinal axis
    8.
    发明授权
    Zipper strip and method of positioning the strip transverse longitudinal axis 有权
    拉链条和定位条横向纵向轴的方法

    公开(公告)号:US07182513B1

    公开(公告)日:2007-02-27

    申请号:US09480061

    申请日:2000-01-10

    IPC分类号: B65D33/16

    摘要: A zipper strip for a reclosable bag or package includes a male interlocking profile and a female interlocking profile. The male interlocking profile includes a male interlocking member and a male web coextruded therewith. In like manner, the female interlocking profile includes a female interlocking member and a female web. The male interlocking member snappingly engages into the female interlocking member to join the profiles to one another. One of the male and female webs is wider than the other in at least one of two directions from the male and female interlocking members, the greater width being represented by at least one flange extending widthwise beyond the other web. The zipper strip is designed to be attached to thermoplastic sheet material by sealing the at least one flange thereto without sealing the male and female webs to each other. Methods for securing the zipper strip to thermoplastic sheet material, and for making packages on a horizontal form-fill-and-seal machine, are also disclosed.

    摘要翻译: 用于可再封闭袋或包装的拉链带包括阳互锁轮廓和母联锁轮廓。 雄性互锁轮廓包括一个凸形互锁构件和与其共挤出的阳性腹板。 以相同的方式,母锁定轮廓包括母锁定构件和母腹板。 凸形互锁构件卡扣地接合到凹形互锁构件中以将轮廓彼此连接。 在阳型和阴型互锁构件的两个方向中的至少一个方向上,阳性和阴性腹板中的一个在另一个中宽,宽度由至少一个沿宽度方向延伸超过另一个腹板的凸缘表示。 拉链条被设计成通过将至少一个凸缘密封在其上而将阳公网和母腹板彼此密封而附接到热塑性片材。 还公开了将拉链条固定到热塑性片材材料上的方法,以及用于在水平成型 - 填充和密封机器上制造包装的方法。

    Meltblowing method and apparatus
    9.
    发明授权
    Meltblowing method and apparatus 有权
    熔化方法和装置

    公开(公告)号:US6074597A

    公开(公告)日:2000-06-13

    申请号:US255906

    申请日:1999-02-20

    摘要: A meltblowing method and apparatus for dispensing an adhesive through a plurality of first orifices of a die assembly fabricated from a plurality of laminated members to form a plurality of adhesive flows at a first velocity, and dispensing air through a plurality of second orifices in the die assembly to form a plurality of air flows at a second velocity. The plurality of first and second orifices arranged in an alternating series so that each of the plurality of first orifices is flanked on substantially opposing sides by one of the plurality of second orifices, wherein the plurality of first and second orifices are oriented to direct non-convergently the plurality of adhesive flows and the plurality of air flows. The plurality of adhesive flows are drawn and attenuated by the plurality of air flows at the second velocity greater than the first velocity of the plurality of adhesive flows, wherein the plurality of adhesive flows are attenuated to form a plurality of adhesive filaments useable for the production of bodily fluid absorbing hygienic articles.

    摘要翻译: 一种熔喷方法和装置,用于通过由多个层压构件制成的模具组件的多个第一孔分配粘合剂,以形成以第一速度的多个粘合剂流,并且通过模具中的多个第二孔分配空气 组件以第二速度形成多个空气流。 多个第一和第二孔布置成交替的串联,使得多个第一孔中的每一个在多个第二孔中的一个的基本上相对的侧面侧面,其中多个第一和第二孔被定向成引导非直径, 多个粘合剂流和多个空气流收敛。 多个粘合剂流被多个空气流以大于多个粘合剂流的第一速度的第二速度拉伸和衰减,其中多个粘合剂流被衰减以形成可用于生产的多个粘合长丝 的体液吸收卫生用品。

    Fastener-driving tool having adjustable controlling mechanism
    10.
    发明授权
    Fastener-driving tool having adjustable controlling mechanism 失效
    紧固件驱动工具具有可调控制机构

    公开(公告)号:US5685473A

    公开(公告)日:1997-11-11

    申请号:US660114

    申请日:1996-06-07

    IPC分类号: B25C1/04 B25C1/00 B25C7/00

    CPC分类号: B25C1/008

    摘要: An improved mechanism for controlling a fastener-driving tool comprises a workpiece-contacting element, a tool-controlling element movable conjointly with the workpiece-contacting element over a limited range, a spool defining having a threaded connection with the workpiece-contacting element and a swivel connection with the tool-controlling element and having axial ribs alternating with axial ribs, and a spool-restraining element movable along a radial line between a spool-restraining position and a spool-releasing position and biased toward the spool-restraining position. The spool-restraining member is arranged to restrain the spool against rotating at the swivel and threaded connections by projecting into any given one of the grooves, between the fibs nearest to the given one of the grooves, when the workpiece-contacting element is moved inwardly from an outer portion of the limited range but not when the workpiece-contacting element is within the outer portion of the limited range.

    摘要翻译: 用于控制紧固件驱动工具的改进机构包括工件接触元件,与工件接触元件在有限范围内联合移动的工具控制元件,限定具有与工件接触元件的螺纹连接的线轴和 与工具控制元件的旋转连接并且具有与轴向肋交替的轴向肋,以及线轴限制元件,其可沿着线轴限制位置和线轴释放位置之间的径向线移动并被朝向线轴限制位置偏置。 线轴限制构件被布置成当工件接触元件向内移动时,通过突出到最接近给定的一个槽的纤维之间的任何给定的一个槽中来限制线轴在旋转和螺纹连接处不旋转 从有限范围的外部部分,但不是当工件接触元件在有限范围的外部部分内时。