• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A packing container of the non-returnable type is frequently manufactured from laminated material which comprises a central carrier layer of paper with thermoplastic layers applied to both sides. As an opening arrangement a pre-punched pouring opening is used which is covered on the one hand by a tear-off cover strip (pull-tab) located outside the packing container, on the other hand by an inner protective strip. A method for sealing an emptying opening in accordance with the invention ensures that a part of the inner protective strip (11) corresponding to the shape and size of the pouring opening (2) accompanies the cover strip (3) owing to the strips as they are applied being heat-sealed to each other at the same time as they are pressed against each other by means of pressure fluid. An arrangement for the realization of the method comprises a heating device (6) with a heatable zone and an outlet (8) for pressure fluid.
    公开号:SU1429928A3
    申请号:SU843826161
    申请日:1984-12-14
    公开日:1988-10-07
    发明作者:Эббе Роланд Лагерстедт Ян；Арнспэнг Бенгт-Арне
    申请人:Аб Тетра Пак (Фирма)；
    IPC主号:
    专利说明:

    FIG, Y
    The invention relates to the processing of plastics, in particular to a device for the manufacture of packaging material-and of two thermoplastic layers joined by thermal welding to each other in the area of the drain opening of the container, obtained from this material.
    The purpose of the invention is to provide an intensive heating zone along the edge of the drain hole.
    Figo 1 shows a device, a cross-section; in fig. 2 is a layout diagram of a drain hole c. induction loop, corresponding to its shape; FIG. 3 shows a packaging container in which a tape of a seal covers a drain hole.
    The device contains opposite plates 1 and 2, one of which is mounted with the possibility of movement relative to the other. On the working surface of the plate 1 is installed a heating device, made in the form of an induction loop 3, in the form of a corresponding configuration of the drain hole of the packaging container and located along the edge of the drain hole. The same plate 1 has openings 4 for supplying a pressure medium, for example air, to the working surface of the plate. The holes 4 are connected through channels (not shown) to the source of the working medium. The induction loop 3 can be made of copper and installed in a groove made in plate 1, which is made of non-conductive material. Known mechanical means (not shown) are used for the relative reciprocating movement of the plates. The working surface of the plate 2 is made flat. The induction loop 3 is connected to a high frequency current source (not shown.
    The device works as follows.
    In order to manufacture a packing material of a raw material with a drain hole containing a laminate of fibrous material 5, such as paper, the latter is coated on both sides with a thermoplastic material (polyethylene). The laminate also contains a layer of aluminum foil that reduces the gas permeability of the material and provides heat
    five
    New connection of laminated material using high-frequency heating. On the one hand, the laminate is covered with tape 6, and on the other, with a protective layer 7.
    This material is placed between plates 1 and 2 when they are in the open position, i.e. at some distance from each other. This ensures the correct position of the drain hole of the packaging material relative to the induction loop 3 of plate 1. The correct position is shown schematically in Figure 2 (the outer contour of the drain hole is indicated by a dash-dotted line). The induction loop for the most part runs at some distance from the contour line 8 of the drain hole 9, and in a limited part it runs parallel and exactly opposite to it.
    After properly placing the drain opening of the packaging material between the plates 1 and 2, the latter are closed, moving towards each other, compressing the packaging laminate. At the same time, alternating current is supplied from the source of the high-frequency relative current to the induction loop 3 so that the material is heated. At the same time, the working medium creating pressure is supplied through the holes 4 to the working surface of the plate 1 and enters the space bounded by the contours of the drain hole, as a result of which the heated thermoplastic material of the safety layer 7 is pressed between the laminated material 5 and pressed against the thermoplastic material of the tape 6 exactly opposite drain hole. Due to the simultaneous heating to the melting temperature of the thermoplastic material (120-140 ° C), the layers of material are bonded to each other within this area, which is a precondition in case layer 7 has to interact with the tape 6 of the container lid when
    The latter is opened when the packaging container is opened. At the same time, the edge zones bordering the drain hole 9 are heated to such an extent that parts of the belt 6
    The 5 covers, along with the pre-coating layer 7, which is in contact with the thermoplastic layers of the packing laminate 5, are firmly fastened
    0
    five
    0
    five
    with the latter, forming a liquid-tight connection under the pressure of the sealing working surfaces of the plates 1 and 2.
    In the area of intense heating, which corresponds to the hole section coinciding with the induction loop section 3j, the excited alternating field is concentrated, since the so-called edge effect occurs. In this case, the foil cooling will be insignificant, since there is no contact of the free edge of the foil with any material capable of heat will dissipate; large heat will occur, which means that the adjacent parts of the thermoplastic fins are heated to a greater extent than other parts. A part of the safety layer 7, located opposite the induction loop 3, will thus be more plastic and mobile than other parts, so that the pressure creating and passing through the opening 4 will press this part of the pre-exposure layer 7 until full contact with the tape. 6 krppki along this part of the edge of the drain hole. In this way, a good connection is achieved within this area and at the same time a more subtle protection is obtained.
    The xydermite 7, as a result of the latter, when the lid strap 6 is torn off the finished packaging container in order to open it, is easily torn off, allowing the pouring opening 9 to be fully opened.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A device for connecting two thermoplastic packaging material layers located on opposite sides of the drain opening, comprising plates, one of which is movable relative to the other and has a flat working surface, a heating device and openings made in the plate to be fed to the working surface of the plate pressure, characterized in that, in order to ensure intensive heating of the zone along the edge of the drain hole, the heating device is made in the form of an induction loop installed in the working surface of the plate, located along the edge of the drain hole, and the holes for supplying the pressure-generating medium are made in the same plate in which the induction loop is installed.
    FIG. 2
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1429928A3|1988-10-07|Arrangement for jointing two thermoplastic layers of packing material
    EP0387512B1|1993-08-11|An arrangement for continuous induction welding
    US3864186A|1975-02-04|Method for induction sealing packaging material
    US4145236A|1979-03-20|Carton sealing method and apparatus
    EP0212490B1|1990-12-05|An arrangement and a method for the sealing of thermoplastic-coated packing material
    EP0076966B1|1986-12-30|A method and an arrangement for the heat-sealing of packing laminate
    SE7805004L|1979-11-03|KIT BELT KIT AND SEALING KIT AND DEVICE FOR PACKAGING CONTAINERS
    EP0426364B1|1995-03-01|Edge sealer for multi-ply business forms
    US4730769A|1988-03-15|Packaging for liquids and process and apparatus for its manufacture
    EP1444135B1|2010-12-15|Method for induction sealing a plastic part to a composite container
    SU1542409A3|1990-02-07|Method of producing closure device on packing container for liquid food
    US4690668A|1987-09-01|Method and apparatus for making a butt seam having a cover strip on a tube of multi-layer packaging material
    US5889263A|1999-03-30|Apparatus and a method for induction sealing
    US5013878A|1991-05-07|Induction heat sealing lap-seamed containers to non-metallic closures
    GB1161902A|1969-08-20|Improvements in or relating to the Bonding of Thermoplastic Surfaces.
    US5191181A|1993-03-02|Sealing thermoplastic member devoid of conductive material
    JP2000516563A|2000-12-12|Apparatus and method for heat sealing
    JPH0622886B2|1994-03-30|Method and apparatus for manufacturing tube bodies for packaging tubes
    KR890002575B1|1989-07-19|Process for preparation of metal vessels
    GB1418669A|1975-12-24|Sealing apparatus and seal formed therewith
    JPH03197033A|1991-08-28|Preparation of multi-layered paper bag internally laminated with synthetic resin thin cylindrical bag
    CA1211356A|1986-09-16|Method and an arrangement for the heat-sealing ofpacking laminate
    SU1745558A1|1992-07-07|Electrode for welding thermoplastic polymer films
    JPH04154565A|1992-05-27|Packing for high-frequency welding
    GB2157228A|1985-10-23|Method of edge bonding sheets and resulting assemblies
    同族专利:
    公开号 | 公开日
    EP0149130A1|1985-07-24|
    AT27586T|1987-06-15|
    CA1243926A|1988-11-01|
    SE8306939D0|1983-12-15|
    AU567783B2|1987-12-03|
    AU3681184A|1985-06-20|
    EP0149130B1|1987-06-03|
    SE439452B|1985-06-17|
    JPH0723124B2|1995-03-15|
    JPS60148408A|1985-08-05|
    DE3464039D1|1987-07-09|
    US4585498A|1986-04-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3361611A|1965-04-05|1968-01-02|Tetra Pak Ab|Method of covering a stamped hole in a laminated packaging material by means of a wafer or the like, and a package to which the method has been applied|
    US3549440A|1967-10-26|1970-12-22|United Glass Ltd|Method for sealing a membrane to the mouth of a container utilizing induced radio frequency current|
    SE412204B|1978-05-02|1980-02-25|Tetra Pak Int|SET AND DEVICE FOR SEALING A TIP CREAM OVER A PACKAGING PACKAGE|
    US4373978A|1981-05-18|1983-02-15|Minnesota Mining And Manufacturing Company|Bonding devices and methods for bonding tape closures to a container end|DE3513976C2|1985-04-18|1989-04-06|Tetra Pak International Ab, Lund, Se|
    SE454685B|1985-06-12|1988-05-24|Tetra Pak Ab|PACKAGING CONTAINER OPENING DEVICE|
    SE453586B|1986-03-26|1988-02-15|Tetra Pak Ab|PACKAGING CONTAINER PROVIDED WITH A RELEASABLE OPENING DEVICE|
    SE452874B|1986-04-17|1987-12-21|Tetra Pak Ab|OPENING DEVICE BY A PACKAGING CONTAINER AND SET AND DEVICE FOR COMPLETING ITS|
    US4705197A|1986-07-29|1987-11-10|International Paper Company|Pour spout for containers|
    GB2209327A|1986-11-13|1989-05-10|Hans Rausing|A packing container for liquid contents|
    JP2719705B2|1988-11-07|1998-02-25|日本テトラパック株式会社|Method and apparatus for attaching strip tape to packaging web with perforated spout|
    FR2647710A1|1989-06-02|1990-12-07|Prepac|Method of putting down a tear-off segment for producing an opening in a heat-sealablefilm, and a bondingelectrode|
    US5157076A|1989-12-07|1992-10-20|The B.F. Goodrich Company|Thermoplastic elastomers with improved abrasion resistance|
    DE4111758C2|1991-04-11|1996-10-17|Tetra Pak Gmbh|Method and device for closing a package|
    SE9200391L|1992-02-11|1993-08-12|Tetra Laval Holdings & Finance|Opening device|
    SE9200999L|1992-03-31|1993-10-01|Tetra Laval Holdings & Finance|Packaging material with opening device and method of making the same|
    US5310262A|1992-06-02|1994-05-10|Bemis Company, Inc.|Flexible package with an easy open arrangement|
    SE9304200L|1993-12-17|1995-01-16|Tetra Laval Holdings & Finance|Opening device for liquid packaging|
    FI104811B|1997-10-22|2000-04-14|Upm Kymmene Oyj|A method of making a fill and / or drain opening for a liquid container|
    DE19915150A1|1999-03-26|2000-10-12|Sig Combibloc Gmbh|Method for producing a composite package and composite package produced by the method|
    DE69921630T2|1999-06-30|2005-10-20|Tetra Laval Holdings & Finance S.A.|Method and apparatus for securing tear tabs to liquid food packaging materials|
    ES2294416T3|2000-07-11|2008-04-01|TETRA LAVAL HOLDINGS & FINANCE SA|HERMETIC PACKAGING FOR VERTIBLE FOOD PRODUCTS, AND CORRESPONDING PRODUCTION METHOD.|
    SE518499C2|2001-02-02|2002-10-15|Tetra Laval Holdings & Finance|Apparatus for preparing a package or packaging material|
    US6579390B2|2001-05-09|2003-06-17|International Paper|Container patch and method of formation|
    DE10204521B4|2002-02-05|2006-04-13|Sig Combibloc Systems Gmbh|Method and device for improving the adhesion of the individual layers of a composite material|
    SE525597C2|2002-12-06|2005-03-15|Tetra Laval Holdings & Finance|Opening device packaging and ways of providing a package with an opening device|
    SE0203616D0|2002-12-06|2002-12-06|Tetra Laval Holdings & Finance|Opening device, packaging and ways of providing a package with an opening device|
    US20060186147A1|2005-01-24|2006-08-24|Nossbaum Frits D|Container for liquid substances and lid therefor|
    EP1759998A1|2005-08-30|2007-03-07|Tetra Laval Holdings & Finance SA|Packaging method and machine for producing sealed packages of pourable food products|
    ES2876028T3|2016-06-17|2021-11-11|Tetra Laval Holdings & Finance|Opening system for a container, its manufacturing method and container that comprises the opening system|
    BR112019011624A2|2017-02-08|2019-10-22|Tetra Laval Holdings & Finance|packaging material, packaging, and method for providing a packaging material.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8306939A|SE439452B|1983-12-15|1983-12-15|SET TO SEAL AN EMPTY OPENING AND DEVICE IMPLEMENTATION DEVICE|
    [返回顶部]