• 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:
    The manufacture of non-returnable packages for e.g. milk is frequently carried out by the conversion of web-shaped, laminated packing material to a tube, filling of the tube with milk and sealing and forming to filled packing containers of the desired, e.g. parallelepipedic, shape. During the forming, which is done by means of external forming devices, the contents are made use of as a holder-up for the forming devices pressed-on from the outside, so that the desired shape can be achieved without creasing or other deformations. The abovementioned forming principle works less well if the packing containers are not to be completely filled but have a certain air space, so-called head-space. The proportioning of the contents also becomes uncertain and the desired accuracy of volume cannot always be achieved. These difficulties are overcome if the contents are mixed prior to filling with gas, preferably sterile air, in appropriate proportions, so that the contents obtain a foam-like character, using a gas volume which is in a suitable proportion to the air space of the finished packing container. The invention relates to a method as well as to a manner of proportioning the contents in the manufacture of packing containers.
    公开号:SU1431670A3
    申请号:SU833647808
    申请日:1983-09-26
    公开日:1988-10-15
    发明作者:Шульте Дистхард
    申请人:Аб Тетра Пак (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a method for packing liquid products into a sleeve of thermoplastic material and can be used in the food industry.
    The purpose of the invention is noBbmieime packaging quality.
    Fig. 1 schematically shows a device for packaging the products in a sleeve of thermoplastic material (packaging machine); in fig. 2 - supply pipe with gas supply pipe,
    The device comprises a roll holder 1 for a roll 2 of packaging material 3j, guide rollers 4, reversing roller 5, suited to the forming elements 6 and 7, sew 8 hot air to weld the material in the longitudinal direction to form tube 9 , the supply pipe lOj, the collapsing. and sealing devices 11 and 12 for forming a filled bag 3 and the gas supply pipe 14 with a jet 15 (or an injection nozzle).
    The method is carried out as follows.
    The packaging laminate contains a central base layer of paper, covered on both sides with thin liquid-impermeable layers of thermoplastic material, for example polyethylenes. "On the packaging laminate: the material has bend lines to facilitate the formation of folds and conversion to ready packaging of pre-packaged products (filled bag 13); Layered material is fed to the device (packaging machine) from a roll 25 which is suspended on the roll holder 1 rotatably in a store mashine. From the magazine, the web 3 of the packaging material passes through a series of guide rollers 4 to the reversing roller 5; after which it moves vertically down through the packaging machine,
    With the help of various folding and forming elements 6 and 7 located along the path of movement of the web 3 of the material, the web 3 during its movement through the masking is converted into a tube 9 with a longitudinal. impervious to the liquid schvom. The sealing of the longitudinal edges of the material weave 3 is achieved by bringing hot air through the nozzle 8, followed by
    Q
    S 0 5
    ABOUT
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    The result is that the thermoplastic layers located at these edges melt. The longitudinal edges are then compressed together, and as they cool, the thermoplastic layers are joined to form the desired fluid-tight joint i
    The packaging material tube 9 thus formed is filled with contents through the feed tube 10, which passes through the upper open end of the packing material tube 9, is concentric with tube 9 and ends a short distance from the lower end of this tube 9. Somewhat lower than the outlet of the feed tube 10 On each side of the tube 9 of the packing material are located the flattening (forming) and sealing fixtures - P and 12 (Fig. 2). “The drawings show only one set of forming x and sealing clamping devices P and 125 while in practice there is usually a series of clamping devices for alternately processing the tube 9 of the packaging material.
    The sealing jaws NIN 12 continuously move back and forth in directions towards each other and in the opposite direction so that they compress and seal the tube 9 of the packaging material along the transverse zones of the seal with regular gaps while simultaneously displacing the contents. The sealing jaws 12 simultaneously move reciprocally in the vertical direction so that when they are in the upper pivoting position, they move towards each other and compress and hold the tube 9 of packaging material. In the downward movement through the packing mashina, the walls of the tube 9 of the packing material are compressed and folded together, with the tube 9 of the material being simultaneously pulled forward to a distance that corresponds to the length of one package blank (tare of packaged products). During the downward movement, the two mold clamping devices 11 simultaneously rotate in p-: directing each other 5 so that part of the tube 9
    The packaging material, which is located directly above the sealing jaws 12, is partially compressed and molded to the desired shape, which, in this case, means an essentially pillow shape with a rectangular cross section. When the sealing jaws 12 reach their lower position, the forming jaws 11 are diluted again to the position shown in FIG. 2 at the same time when the material tube 9 is cut off by a cross section in the zone compressed by the sealing jaws 12. As a result, the previously formed product bag 13 is separated from the tube 9 of the packaging material. The bag 13 is transported further by means of a conveyor (not shown) for further processing and final molding in order to get the bag 13 with a product of the required shape (in this case a box).
    Products are fed to the lower end of the tube 9 of the packaging material through the feed tube 10. In the process of uninterrupted work of the packaging (filling) machine and the production of a full container of the product bags 13, the contents are fed in such quantities that the level of products is always above the compaction and forming section of package 13. This ensures that the packaging will be completely filled with the product and makes possible molding, since it is necessary to use an internal one to achieve satisfactory molding. the backpressure that is created by the fluid present in the package 13 with the product.
    In the production of packages that are not completely filled with product 13, i.e. air bags 13, products are supplied in such quantities as to create the required air space. This metered flow means that air space is formed at the upper end of the bag 13, which in turn means that, during molding, the back pressure created by the products changes in different parts of the bag 13, while increasing
    five
    about o 5
    g
    five
    70
    with the likelihood of marriage (e.g., folded forming).
    To avoid this, a partial filling of the package 13 with the product is carried out by continuously feeding the product through the feed tube 10 while simultaneously mixing the product with gas before feeding it into the tube 9 of the packaging material. Gas is supplied through the tube 14, which is connected to the feed tube 10 outside the tube 9 of the packaging material. In order to improve the mixing of the gas and to obtain the required size of the bubbles, the gas supply tube 14 is provided with a nozzle 15 (or injection nozzle) at the point of connection with the feed pipe 10.
    The products are fed continuously in such a rhythm that during operation the level of the products remains slightly above the molding section, which is regulated by means of a valve controlled float. At the same time, the gas is supplied through the tube 14 in such a quantity that the contents with gas completely fill the bag 13 after sealing and sealing. Using the nozzle 15, which preferably has a diameter of 0.2-0.6 mm, it is possible to obtain a large number of bubbles in the contents. These bubbles are very small and evenly distributed in the contents so that the mixture remains homogeneous over the time it takes to pass through the feed tube 10 and fill the lower end of the tube 9 of packaging material. In order to compensate for the gas losses due to leakage through the tube 9 of the packaging material, the admixing of gas is carried out with a certain excess, which is determined in each individual case depending on the viscosity of the product being packaged a. When the desired product filling ratio is 90%, it is necessary to supply gas slightly more than 10%. It has been found that an excess of gas should be 5% for relatively mobile products, such as milk, i.e. approximately 15% of the gas must be added to the contents to obtain a filling ratio of 90%.
    It was established experimentally that when packaging standard milk with a fat content of 1.5-3%, gas should be supplied at a pressure of approximately
    514
    3-4 bar through the nozzle 15 with a diameter of 0.2-056 mm, preferably 0.4 mm. A large number of well-distributed gas bubbles are obtained with an average diameter of approximately 50 microns. The absolute majority of bubbles have a diameter of 30-60 microns, which means that the uniform distribution of gas bubbles in the contents remains essentially unchanged during the molding process. Only after 15–20 min after the application of gas, a noticeable redistribution takes place, consisting in the fact that the bubbles are stirred; 1T to the top of the product bag 13,
    The amount of gas added can be precisely controlled by the fact that gas injection through tube 14 is continuously monitored and regulated as a function of the amount of products (contents) that pass through the feed pipe 10 "The gas used must be of such quality so that it does not react with the product or did not have any other effect on this product. In most cases, sterile air can be used, but for some products, such as fruit juices, an inert gas such as nitrogen is preferable.
    Thus, precise and homogeneous mixing of gas bubbles into the products passing through the supply pipe 0 is guaranteed, on the one hand, by supplying gas through the small-diameter orifice 15 ;, on the other hand, by supplying gas under high pressure. As a result, the contents are obtained in a striped form. Mixing gas and
    706
    products can be carried out through the injection nozzle at the point of connection with the gas supply tube 14. The content flow automatically adjusts the required gas mixing, which eliminates the need for pressurized gas. When using sterile air, it can flow directly from the sterile air system of the packaging machine without using a gas storage facility and compressor.
    The proposed method can be used in aseptic as well as non-aseptic filling, i.e., in sterile filling as well as standard (pasteurized) milk.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    1, a method of packing liquid products into a sleeve of thermal material, which involves feeding the product through the supply pipe into the sleeve, flattening, sealing and cutting the sleeve to form filled packages, characterized in that, in order to improve the quality of packaging, into the supply pipe through the jet or injection the nozzle serves a portion of the gas, mixing it with the product to foam the latter,
    g
    2, a method according to claim 1, characterized in that the gas is sterile air,
    3, the method according to claims, 1 and 2, characterized in that the gas is an inert gas, preferably nitrogen.
    Fig, 1
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    同族专利:
    公开号 | 公开日
    AU558365B2|1987-01-29|
    EP0104698A3|1985-05-22|
    SE8205496L|1984-03-28|
    IS1323B6|1988-08-03|
    NO160769C|1989-05-31|
    CA1296613C|1992-03-03|
    NO160769B|1989-02-20|
    EP0104698A2|1984-04-04|
    NO833393L|1984-03-28|
    AT27585T|1987-06-15|
    EP0104698B1|1987-06-03|
    JPS5984706A|1984-05-16|
    SE8205496D0|1982-09-27|
    AU1958083A|1984-04-05|
    UA5599A1|1994-12-28|
    DE3371894D1|1987-07-09|
    JPH0227202B2|1990-06-15|
    IS2855A7|1984-03-28|
    US4747253A|1988-05-31|
    SE454168B|1988-04-11|
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    JPS618291B2|1977-08-11|1986-03-13|Musashi Seimitsu Kogyo Kk|
    DE2931527A1|1978-09-29|1980-04-17|Sig Schweiz Industrieges|DEVICE FOR PRODUCING AND FILLING HOSE BAGS|
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    US4935255A|1985-12-10|1990-06-19|Borden, Inc.|Controlled headspace gas packaging of aseptic dairy products while maintaining fat emulsion stability|
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    US4924656A|1987-06-19|1990-05-15|Hayssen Manufacturing Company|Forming, filling and sealing bags and depositing them in cartons|
    JPH0635921Y2|1987-11-20|1994-09-21|四国化工機株式会社|Level controller for filling liquid level in packaging tube|
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    GB9026385D0|1990-12-05|1991-01-23|Boc Group Plc|Dissolving a gas in a liquid|
    IT1262305B|1993-02-23|1996-06-19| PROCESS AND PLANT FOR PACKING FLUID OR SEMI-FLUID PRODUCTS WITHIN CONTAINERS IN SYNTHETIC THERMOFORMABLE RESIN.|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8205496A|SE454168B|1982-09-27|1982-09-27|SET AND DEVICE FOR DOSING OF FILLED GOODS IN THE MANUFACTURE OF PACKAGING CONTAINERS|LV930942A| LV5431A3|1982-09-27|1993-06-30|Liquid product insertion tolerance thermoplastic material slutene|
    LTRP1000A| LT2512B|1982-09-27|1993-09-20|WASTE PACKAGING I TERMOPLASTIC MATERIAL RANKOVE BUDGET|
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