公开(公告)号：US5857953A

公开(公告)日：1999-01-12

申请号：US582069

申请日：1996-01-02

申请人： Paul A. Selle ,  Peter J. Gietman, Jr. ,  Timothy R. Dutter ,  Thomas C. Jansen ,  Frank M. Slama

发明人： Paul A. Selle ,  Peter J. Gietman, Jr. ,  Timothy R. Dutter ,  Thomas C. Jansen ,  Frank M. Slama

IPC分类号： B31B19/90 ,  B31B1/90

CPC分类号： B31B19/00 ,  B29C65/7852 ,  B29C66/135 ,  B29C66/1352 ,  B31B2219/9025 ,  Y10S493/928

摘要： This invention pertains to draw tape equipment, and methods for incorporating draw tapes into plastic and like bags. In general, a continuous plastic web is slit at a slitting station to form layers, and respective free edges. The web then passes to a hole forming station where holes are punched in the top and bottom layers adjacent the free edges. After the holes are punched, edge regions of the top and bottom layers are separated from each other, followed by forming of hems in the separated layers at hem forming stations arranged in parallel with each other. Concurrent with forming of the hems, continuous draw tapes are fed to the hem forming stations and the hems are formed about the draw tapes. The formed hems, with the draw tapes incorporated therein, optionally pass through first temperature control stations where the temperature of the plastic web is controlled to a desired temperature before hem sealing. The formed hems are then sealed to the main bodies of the respective top and bottom layers. Narrow pressure wheels apply pressure to the hot seals to improve seal quality. The sealed hems optionally pass through second temperature control stations to cool the web. The edge regions of the layers are then rejoined, in face-to-face relationship with each other.

摘要翻译： 本发明涉及拉带设备，以及将拉带装入塑料袋和类似袋子中的方法。 通常，连续的塑料网在切割台处被切割以形成层和相应的自由边缘。 纸幅然后传送到孔形成站，其中在邻近自由边缘的顶层和底层中冲孔。 在冲孔之后，顶层和底层的边缘区域彼此分离，然后在彼此平行布置的卷边成形站处在分离的层中形成折边。 与形成折边同时，将连续的拉带输送到卷边成型台，绕拉带形成折边。 形成的薄膜，其中并入的拉带可选地通过第一温度控制站，其中塑料网的温度在下封边之前被控制到期望的温度。 然后将形成的薄膜密封到相应的顶层和底层的主体。 狭窄的压力轮对热密封件施加压力，以提高密封质量。 密封的薄片可选地通过第二温度控制站以冷却网。 然后，层的边缘区域以彼此面对面的关系重新结合。

公开(公告)号：US4850946A

公开(公告)日：1989-07-25

申请号：US216057

申请日：1988-07-07

申请人： Kevin Broderick ,  Vernon C. Catchman ,  Fox J. Herrington ,  Shirley K. Johnston ,  Robert H. Olson ,  Donald Stell

发明人： Kevin Broderick ,  Vernon C. Catchman ,  Fox J. Herrington ,  Shirley K. Johnston ,  Robert H. Olson ,  Donald Stell

IPC分类号： B65D33/28

CPC分类号： B65D33/28 ,  Y10S493/928

摘要： A draw type bag with two single draw tapes having a front wall and back wall of flexible sheet material joined to each other along edges of the bag. Tubular channels extend along opposed transverse top edges of the front and back walls. The channels define an open mouth for the bag. Each of the channels has openings at the opposite ends of the top edges of the bag. A pair of draw tapes extends through both of the channels. One end of each of the tapes is attached to opposite side edges of the bag beneath the openings in one of the channels and the other end of each of the tapes extends through the openings at the corresponding ends of the other of the channels so that the tapes cross each other in both channels and wrap around the mouth of the bag whereby when the tapes are pulled the mouth of the bag is drawn tightly together.

摘要翻译： 具有两个单个拉制带的拉伸型袋，其具有沿袋的边缘彼此接合的柔性片材的前壁和后壁。 管状通道沿着前壁和后壁的相对的横向顶部边缘延伸。 通道为袋子定义一个开口。 每个通道在袋的顶部边缘的相对端具有开口。 一对拉带延伸穿过两个通道。 每个带的一端在通道中的一个通道下方的开口下方的袋的相对侧边缘处附接，并且每个带的另一端延伸穿过另一个通道的相应端部处的开口，使得 胶带在两个通道中彼此交叉并且缠绕在袋的嘴部，由此当拉动胶带时，袋的口被紧紧地牵拉在一起。

公开(公告)号：US4714454A

公开(公告)日：1987-12-22

申请号：US904445

申请日：1986-09-08

申请人： Fox J. Herrington

发明人： Fox J. Herrington

IPC分类号： B29C53/36 ,  B29C65/00 ,  B29C65/18 ,  B31B19/64 ,  B31B23/64 ,  B31B23/86

CPC分类号： B29C66/83411 ,  B29C53/36 ,  B29C65/18 ,  B29C65/305 ,  B29C66/431 ,  B29C66/4332 ,  B29C66/843 ,  B29C66/81465 ,  B31B2219/6038 ,  Y10S493/928

摘要： Apparatus for heat sealing a pair of hems in a moving web of film having structure including a pair of spaced surfaces over which each hem of the pair of hems is adapted to pass. A first block is supported by the structure with respect to one of the surfaces and on one side of one of the hems. A plurality of rollers is mounted on the first block at spaced locations in tandem for engaging the film along the path of the heat seal to be formed in the one hem. A second block is supported by the structure with respect to the other of the surfaces and on one side of the second hem. The second block has a plurality of rollers mounted thereon at spaced locations in tandem for engaging the film along the path of a heat seal to be formed in the second hem. Heaters are provided for each of the blocks and the respective plurality of rollers whereby movement of the hems through the heat sealing apparatus causes the plurality of rollers mounted on the blocks to rotate and produce the heat seals in the pair of hems. Mounted on the structure between the pair of hems is a plurality of back-up rollers for engaging the film along the path of the heat seals to be formed in the hems and cooperating with the heated rollers on the blocks in creating the heat seals in the pair of hems.

摘要翻译： 用于将一对薄膜热封在具有包括一对间隔表面的结构的膜的移动网中的装置，每对边缘的每个折边适于通过该表面。 第一块由结构相对于其中一个表面和其中一个表面的一侧支撑。 多个辊以串联的间隔位置安装在第一块上，用于沿着要在一个下摆中形成的热封的路径接合胶片。 第二块由结构相对于另一个表面和第二摆的一侧支撑。 第二块具有多个辊，它们在间隔开的位置串联安装，用于沿着待形成在第二下摆中的热封的路径接合胶片。 为每个块和相应的多个辊提供加热器，由此，通过热封装置的转子的移动使得安装在块上的多个辊旋转并产生一对电流的热密封。 安装在一对折边之间的结构上的是多个支撑辊，用于沿着热密封的路径接合胶片，以形成在阴模中并与块上的加热的辊配合，以在该密封件中形成热封 一对折

公开(公告)号：US4684359A

公开(公告)日：1987-08-04

申请号：US894163

申请日：1986-08-07

申请人： Fox J. Herrington

发明人： Fox J. Herrington

IPC分类号： B29C55/06 ,  B31B19/90 ,  B31B23/86 ,  B31B1/90 ,  B31D1/06

CPC分类号： B29C55/06 ,  B31B2219/9029 ,  B31B2219/9035 ,  Y10S264/73 ,  Y10S493/928

摘要： A thermoplastic draw tape having thick and wide end portions with a relatively thin and narrow central portion between them is produced by movable clamps which stretch the tape between stationary clamps to produce the stretched, oriented portions of the tape. A plurality of movable clamps and a plurality of stationary clamps produce a plurality of stretched central portions so that the stretching time can be greater than the cycle time of bag making machinery with which the stretching apparatus is synchronized.

摘要翻译： 具有厚而宽的端部的热塑性拉伸带在它们之间具有相对薄且窄的中心部分由可移动的夹具制成，该夹具在固定夹具之间拉伸带以产生拉伸的带的取向部分。 多个可移动夹具和多个固定夹具产生多个拉伸的中心部分，使得拉伸时间可以大于拉伸装置同步的制袋机械的循环时间。

公开(公告)号：US3512456A

公开(公告)日：1970-05-19

申请号：US3512456D

申请日：1966-05-04

申请人： MEYER ALFONS

发明人： MEYER ALFONS

IPC分类号： B31B19/90 ,  B65D33/28 ,  B31B1/90 ,  B31B49/04 ,  B65B61/14

CPC分类号： B65D33/28 ,  B31B70/8135 ,  Y10S493/928

公开(公告)号：US5057065A

公开(公告)日：1991-10-15

申请号：US448152

申请日：1989-12-08

申请人： James E. Buchman

发明人： James E. Buchman

IPC分类号： B31B19/90

CPC分类号： B31B19/00 ,  B31B2219/9029 ,  B31B2219/9035 ,  Y10S493/928

摘要： A process for manufacturing draw tape bags, unique tubular films used in the process and the resulting draw tape bags are disclosed. The process begins with the step of forming a tubular film having a longitudinal region with a film strength greater than the film strength of the remainder of the tube. Next, the longitudinal region of greater strength is slit out of the tube and into draw tape ribbons, leaving the remainder of the tube in the form of a continuous sheet with two side edges. A hem with a draw tape access hole is next formed from each of the two side edges, each of the hems encasing a draw tape ribbon. Last, transverse seams are formed in the folded continuous sheet to define individual bag edges and the folded continuous sheets is severed to form individual bags. In one embodiment the longitudinal region of greater strength is made from a resin different than the resin making up the remainder of the tube. In another embodiment the tubular film is formed with the region of greater strength being thicker in its cross-section than the cross-section of the remainder of the film. The resulting bag has a draw tape which is made from film severed from the marginal portion of the bag wall but which has a greater strength than the bag wall film.

摘要翻译： 公开了一种制造牵引带袋的方法，在该方法中使用的独特的管状膜和所得到的拉带带。 该方法开始于形成具有膜强度大于管的其余部分的膜强度的纵向区域的管状膜的步骤。 接下来，将更大强度的纵向区域从管中切出并拉入带状带，使其余的管呈连续片的形式，具有两个侧边缘。 接下来，由两个侧边缘中的每一个形成具有拉带进入孔的边缘，每个边缘包围拉带带。 最后，在折叠的连续片材中形成横向接缝以限定单独的袋边缘，并且折叠的连续片材被切断以形成单独的袋子。 在一个实施例中，具有更大强度的纵向区域由与构成管的其余部分的树脂不同的树脂制成。 在另一个实施例中，管状膜形成为具有比其余膜的横截面更大的强度区域。 所得到的袋子具有一个拉链带，该拉带由薄膜从袋壁的边缘部分切割而成，但是比袋壁膜具有更大的强度。

公开(公告)号：US5050999A

公开(公告)日：1991-09-24

申请号：US558780

申请日：1990-07-26

申请人： James C. Van Loon, III

发明人： James C. Van Loon, III

IPC分类号： A45C3/04

CPC分类号： A45C3/045 ,  Y10S493/928

摘要： An open-mesh net bag is formed of a rectangular piece of open-mesh netting and a pair of elongated flexible cords. A central length portion of each cord is interlaced through the meshes of netting piece along a respective end edge region, a pair of loop-forming length portions are intertwined with each other to form a loop with the central length portion, a pair of intermediate length portions are interlaced through the meshes along about one-half the length of the side edge regions, whereupon terminal end portions of the respective cords are connected to each other. A method of forming the open-mesh bag is also disclosed.

摘要翻译： 开网网袋由矩形的开网网和一对细长的软线形成。 每个帘线的中心长度部分沿着相应的端边缘区域通过网片的网格交错，一对环形成长度部分彼此缠结以形成具有中心长度部分的环，一对中间长度 部分沿着侧边缘区域的长度的大约一半的间隔通过网格交错，于是各个帘线的末端部分彼此连接。 还公开了一种形成开式网袋的方法。

公开(公告)号：US4824425A

公开(公告)日：1989-04-25

申请号：US158419

申请日：1988-02-22

申请人： David K. Stock

发明人： David K. Stock

IPC分类号： B29C65/78 ,  B31B19/90 ,  B31B1/64

CPC分类号： B29C65/7841 ,  B29C66/4322 ,  B29C65/7852 ,  B29C66/4312 ,  B29C66/828 ,  B31B2219/9025 ,  Y10S493/928

摘要： A draw tape bag forming apparatus includes an edge folder for folding the edges of pliable plastic web to form a hem in the edge. A draw tape is fed into the open hem which is then heat sealed along the inner edge of the hem wall to form a tubular hem. The web is of an indefinite length and moves continuously through the machine. The heat sealed hem is an expanded air-filled type hem. An electrostatic generator unit is mounted downstream of the ballooned hem. The generator unit includes a charging bar mounted in spaced relation to reference ground plate to form a gap with the ballooned hem passing therebetween. The hem is aligned with the bar. A 120 volt power supply is connected to the charging bar and establishes a high voltage along the length of the bar. An electrostatic field is created across the gap and induces a charge in the walls of the hem the hem collapses against the ground plate to form a flat hem in the web for subsequent passing of the web through a bag making machine which seals and severs the web on longitudinally spaced lines to form the bags. The power supply may establish a negative voltage relative to the ground plate. The power supply may be directly connected to the bar and plate.

摘要翻译： 拉带袋形成装置包括用于折叠柔韧塑料网的边缘以在边缘中形成褶边的边缘折叠物。 将拉带输送到开口边缘中，然后沿着下摆壁的内边缘热密封以形成管状下摆。 纸幅长度不定，连续移动通过机器。 热封的下摆是膨胀的充气型下摆。 静电发生器单元安装在气球下摆的下游。 发电机单元包括一个与基准接地板间隔开的安装的充电棒，以形成一个与膨胀的下摆通过的间隙。 下摆与条对齐。 一个120伏的电源连接到充电棒上，并沿着条的长度建立一个高电压。 跨越间隙产生静电场，并在下摆的壁中引起电荷，所述下摆的折边折叠在接地板上，以在网中形成平的边缘，用于随后使幅材通过制袋机，所述制袋机密封和切断网 在纵向间隔的线上形成袋子。 电源可能建立相对于接地板的负电压。 电源可以直接连接到棒和板。

公开(公告)号：US4822437A

公开(公告)日：1989-04-18

申请号：US157751

申请日：1988-02-19

申请人： David A. Bryniarski ,  Edward G. Grosz

发明人： David A. Bryniarski ,  Edward G. Grosz

IPC分类号： B29C69/00 ,  B31B19/90 ,  B30B15/34 ,  B32B31/18 ,  B32B31/20

CPC分类号： B29C69/006 ,  B31B2219/9025 ,  Y10S493/928 ,  Y10T156/1056 ,  Y10T156/1077 ,  Y10T156/133 ,  Y10T156/1734 ,  Y10T156/1741

摘要： Method and apparatus for the manufacture of non-roping thermoplastic draw tape handles for insertion into thermoplastic bags and in particular for the continuous application of a reinforcing layer of material to the handled portion of the thermoplastic draw tape to reduce roping.

摘要翻译： 用于制造用于插入热塑性袋中的非缠绕热塑性拉伸带手柄的方法和装置，特别是用于将热塑性拉伸带的处理部分的材料加强层连续地施加以减少罗纹。

公开(公告)号：US4721501A

公开(公告)日：1988-01-26

申请号：US904444

申请日：1986-09-08

申请人： Fox J. Herrington

发明人： Fox J. Herrington

IPC分类号： B29C53/36 ,  B29C65/00 ,  B29C65/18 ,  B29C65/26 ,  B31B19/64 ,  B31B23/64 ,  B31B23/86

CPC分类号： B29C66/8161 ,  B29C65/18 ,  B29C65/26 ,  B29C65/305 ,  B29C66/4332 ,  B29C66/81427 ,  B29C66/81465 ,  B29C66/83413 ,  B29C66/83543 ,  B29C53/36 ,  B29C65/245 ,  B29C66/81422 ,  B29C66/8511 ,  B31B2219/6053 ,  Y10S493/928

摘要： Apparatus for producing a machine-direction heat seal in a moving web of plastic film including a block adapted to be supported on one side of the hem and having a plurality of rollers mounted thereon at spaced locations in tandem for engaging the film along the path of the heat seal to be formed in the hem. The block has a corresponding plurality of surfaces each of which is adapted to be engaged by a side of one of the rollers. A heater is provided for heating the block and its plurality of surfaces and the rollers are maintained in contact with the plurality of surfaces whereby movement of the hem though the heat sealing apparatus causes the plurality of rollers to rotate and maintain contact with the plurality of surfaces whereby the rollers are in turn heated by conduction from the block and produce the heat seal in the hem.

摘要翻译： 用于在塑料膜的移动幅材中产生机器方向热密封的装置，包括适于被支撑在所述卷边的一侧上的块，并且在间隔开的位置处并列安装有多个辊，用于沿着 在下摆中形成热封。 该块具有相应的多个表面，每个表面适于由一个辊的一侧接合。 提供加热器用于加热块及其多个表面，并且辊保持与多个表面接触，由此通过热封装置的摆动的移动使得多个辊旋转并保持与多个表面的接触 从而通过来自块的传导而将辊加热并在下摆中产生热封。