• 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 method and apparatus are disclosed for making a molded pulp product such as a plate or the like which has an upper liquid impervious layer integrally secured thereon. The pulp product is formed on a foraminous mold and, together with the mold, is heated to the softening temperature of a liquid impervious thermoplastic sheet material which is caused to be cut to size by engagement with a cutting edge on the mold whereafter the severed portion is drawn by suction and bonded to a selected surface area of the pulp product.
    公开号:SU722472A3
    申请号:SU752125134
    申请日:1975-04-18
    公开日:1980-03-15
    发明作者:А. Ли Чарльз；Р.Фэрбек Воррен；М.Гранберг Фредерик
    申请人:Пейпер Компани (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD OF MANUFACTURING A PRODUCT WITH AN INCORRECTABLE THERMOPLASTIC COATING AND DEVICE FOR IMPLEMENTATION
    In addition, the molding tool and the product in it is heated to B5-71 C and polyethylene material is used as a facing film.
    This method can be carried out with a device having a device for holding and moving a facing film, a mold for forming the product with the product, a device for heating the molding means, the cutting device being placed on the molding means. On this design it is possible to obtain a product made in the form of a disk.
    Figure 1 shows a device for carrying out the method, a vertical projection; in fig. 2 is a section along A-A in FIG. 1 in FIG. 3; a molding means of the device / in FIG. 4 - section along BB in FIG. 3 (in combination with a moisture-proof film and a molded product made of fibrous material in a mold).
    The device comprises a carrier supply device 1 of fiber material, which is an elongated canal, through which the raw fibrous mass for manufacturing an article, suction means 2, belt conveyor 3 with open molded means 4, means 5 and 6 of dewatering the mass and drying it, device 7 superposition of the film on the open surface of the product, the system 8 for feeding the liquid fibrous mass into the tank 9, through which it moves into the molding means 4, the pressure tank 10, the pump 11, the feeder 12, spread Control roller 13 and a group of stars 14-17.
    The molding means comprises a perforated rigid base 1 with a series of holes 19, a grid 20, an annular support 21 of a flexible material with a groove 22, a stopper 23, while the supporting part is mounted on the conveyor belt 3, so that it intersects the annular opening 24 in the tape with using an adhesive such as epoxy resin. Each support portion 21 is provided with an annular cutting edge 25.
    The device works as follows.
    The initial mass for receiving the product is supplied by pump 11 from CHCTeNs 8 to the pressure tank 10, and from there by the feeder to tank 9. The conveyor belt 3 with molded means 4 is directed under the surface of the current mass along the arcuate bottom of the suction box of the tank 9, thus the grid side the base of the molding means 4 is open for the initial mass to be deposited on it during a selected period of time depending on the speed of movement of the belt and the length of the path of movement of the belt below the surface of the source material. As the molding means 4 moves along the channel of the medium 1, a partial vacuum in the cavities of the suction box 26 of the tank 9 ensures that the liquid medium is drawn from the initial mass through the molding means 4, ensuring the accumulation of fibrous mass on the outer surface of each shape as approach of this surface under the pulp, after which the molding means 4 with a layer of fibrous material deposited on them are subjected to further suction, pressure and heat to remove residual moisture in the means 5 and 6, according to e articles in which the molding tool after the drying means 7 are provided in the overlapping film impermeable to moisture.
    The film 27 is wound from the roll 28 to the roll 29 and through the drive roller 30 parallel to the conveyor belt 3 moves to the drive roller 31 and wound onto the roll 29. The rollers 30 and 31 are mounted on support posts 32 of the support stand 33. The film material is positioned over the conveyor belt 3 at a distance that is equal to the height of the support part 21 of the molding means 4. The support columns 33 are arranged so that as the molding means 4 comes out with the products, they pass below the film 27, as a result of which the film material interacts with the upper cutting Romka on the supporting portion of the molding means.
    To ensure the movement of the film material parallel to the transport belt, an engine 34 mounted on the support posts in the fixture 7 and a pair of pressure rollers SG and 36 are mounted on the driving rollers 30 and 31 on the brackets, which ensures that the film material is pressed to the rollers 30 and 31 and not allows the film material to slip and to maintain a slight tension on the film material, for example polyethylene with a thickness of 0.025-0.050 mgi. Under the conveyor belt 3, a suction unit 37 is installed, identical to the box 26 of the tank 9, which creates a continuous suction effect on the holes 24 in the conveyor belt 3, and through them to the side of the molding material opposite to the incoming fibrous material, as the tool 4 moves between box 37 and moving film 27.
    The heated means 4 with products heat the polyethylene film to the temperature of its softening in the line of contact of the film with the cutting edge 25
    ia of the support part 21 of the means 4, which is created when the mold is under the plastic wrap. Simultaneously with the moment when the cutting edge 25 on the support part 21 completely interacts with the polyethylene film, the suction chic 37 creates a suction action through the holes 19 in the base 18 of the means 4 to provide a pressure drop to the moisture-impermeable film 27, as a result of which the polyethylene film is cut off part 38. As this part is cut along an annular cutting edge 25, part 38 is fed downward in the direction of the product molded in the means 4 and superimposed on the open top surface of this product. The residual heat in the product is sufficient to provide thermal adhesion of the cut part 38 of the film to the surface of the product located opposite the film, and thereby create a moisture-impermeable coating on the upper surface of the product.
    The molded plate-shaped product 39 has a disk-shaped surface of a homogeneous material molded from fiber particles, which is adjacent to a mesh 40, located on the base 18 of the means 4, the upper surface 41 of which is parallel to the lower surface 42, an annular surface 43 that joins the lower and the upper surface of the molded product. When the molding means 4 and the product therein 39 come out of the means 6 for drying, the product has some shrinkage, as a result of which the annular surface 43 moves inwards in the radial direction from the annular surface 44 of the bearing part 21.
    The diverging edge 25 on the support part 21 is positioned so as to define an inner portion that defines, in turn, a cut off moisture-impermeable part 38 of the film, whose area is larger than the top surface of the product 39. Consequently, when the cut part 38 the film is fed down to the connection with the upper surface of the product, it will completely close the upper surface of the product, and the annular edge of this part 38 of the film will enter along the periphery of the adhesion with at least part of the annular surface 43 of the product.
    The thermal connection of the cut part of the film with the product will provide a thermoplastic coating of polyethylene film with a thickness of 0.0250, 050 mm, waterproof over the entire surface of the product.
    After adhering the film to the open surface of fiber products
    material, the remaining portions of the film material are wound into a roll 29 for later use.
    Thus, the proposed method of manufacturing products with an impermeable thermoplastic coating and a device for its implementation allow to obtain products with high moisture-resistant qualities, as well as provide good quality of the coating.
    权利要求:
    Claims (4)
    [1]
    1. Method of manufacturing products c) 1-proof thermoplastic coating by applying to a molded from wood pulp product a facing film in a molding means with a peg-base, contacting the film with the product using vacuum and cutting the film
    along the line of contact with the product, characterized in that, in order to increase the performance of the products and improve the quality of the coating, the cutting of the cladding film along the line of contact with the product is carried out simultaneously with the contacting of the film with the product in the molding tool, while the product in it is heated to the softening temperature of the facing film, and a vacuum is created on the opposite side of the product.
    S
    [2]
    2. The method according to claim 1, about tl and h ayusch and the fact that the molding device and the product it is heated to 65-71 C.
    [3]
    3. Method pop.1, which is also distinguished by the fact that polyethylene material is used as a facing film.
    [4]
    4. A device for carrying out the method according to Claim 1, comprising
    § molded products and cladding mechanisms, molding means with perforated base, cutting device and chamber
    to create a vacuum, in which it has a device for holding and moving the facing film, mounted above the molding means, a device for heating the molding means, while the cutting attachment is placed on the molding means.
    Sources of information taken into account in the examination
    1.Bernhardt E. Recycling
    0 thermoplastic materials. Gosnauchzdat chemical literature. M., 1962, p. 514-523, 561-564.
    2. The patent of the USA W 3539422, cl. 156-202, 1970.
    / Y /// y //// y // 7 /////// ///////////////////////////// //////////// y ////// /////////
    FIG.
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    .3
    类似技术:
    公开号 | 公开日 | 专利标题
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    US4264400A|1981-04-28|Thermal laminating apparatus
    US3596432A|1971-08-03|Packaging machine
    US3915606A|1975-10-28|Extrusion nozzle for packaging machines
    CA2051163A1|1992-03-13|Process and apparatus for forming a composite product
    US4154637A|1979-05-15|Method of making a landscape blanket
    US3539422A|1970-11-10|Plastic film lining machine
    EP0544562A1|1993-06-02|Process and installation for producing trays used for packaging edible products and trays obtained by this process
    IE810140L|1981-10-22|Abrasion resistant sheet.
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    GB2132919A|1984-07-18|Resin bonded products
    US3533212A|1970-10-13|Packaging apparatus
    同族专利:
    公开号 | 公开日
    FI751135A|1975-10-20|
    JPS50142809A|1975-11-17|
    US3957558A|1976-05-18|
    SE7504489L|1975-10-20|
    DE2516689A1|1975-10-30|
    FR2268109A1|1975-11-14|
    SE409009B|1979-07-23|
    CA1025260A|1978-01-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2477224C2|2007-10-10|2013-03-10|Дуо-Пласт Аг|Films with reinforced sides and edges|US3205123A|1962-08-31|1965-09-07|Beloit Corp|Method and apparatus for applying a plastic sheet to a pulp molded article on the mold|
    US3318748A|1963-04-24|1967-05-09|Morton Salt Co|Method of forming a laminate paper plate|
    GB1111525A|1964-06-18|1968-05-01|Keyes Fibre Co|Thermoplastic coating of molded pulp|
    US3697369A|1964-12-04|1972-10-10|Owens Illinois Inc|Plastic lined receptacle or the like|
    US3539422A|1968-05-29|1970-11-10|Diamond Int Corp|Plastic film lining machine|
    US3616197A|1969-12-10|1971-10-26|Owens Illinois Inc|Plastic lined receptacle or the like|
    US3825642A|1971-11-03|1974-07-23|Owens Corning Fiberglass Corp|Method for producing a film-faced product|DE2547477C3|1975-10-23|1981-01-22|Maschinenfabrik Rissen Gmbh, 2000 Hamburg|Method and device for deep-drawing a film made of thermoplastic material|
    JPS5256159A|1975-10-25|1977-05-09|Rissen Gmbh Maschf|Lining unit|
    US4257530A|1978-07-27|1981-03-24|Champion International Corporation|Lined tray|
    US4200481A|1978-07-27|1980-04-29|Champion International Corporation|Apparatus for making a lined tray|
    US4222808A|1979-02-07|1980-09-16|Olin Corporation|Ski manufacturing process|
    FR2456854B1|1979-05-18|1986-03-28|Nissan Motor|MEMBER, SUCH AS AN ENGINE COVER, NEAR THE MOTOR OF A MOTOR VEHICLE, AND MANUFACTURING METHOD|
    DE3837467C2|1988-11-04|1990-08-16|Markhorst Holland B.V., Hardenberg, Nl|
    US5695376A|1994-09-09|1997-12-09|Kimberly-Clark Worldwide, Inc.|Thermoformable barrier nonwoven laminate|
    US5847362A|1996-10-16|1998-12-08|Interfic, Inc.|Corrugated paperboard manufacturing apparatus providing controllable heat and related methods|
    US5837974A|1996-10-16|1998-11-17|Interfic, Inc.|Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods|
    US5902502A|1996-10-16|1999-05-11|Interfic, Inc.|Corrugated paperboard manufacturing apparatus and related methods|
    US5788803A|1996-10-16|1998-08-04|Interfic, Inc.|Corrugated paperboard manufacturing apparatus with controllable preheating|
    USH2062H1|1998-09-03|2003-04-01|Kimberly-Clark Worldwide|Nursing pad|
    EP1142690A1|2000-04-04|2001-10-10|Brodrene Hartmann A/S|Method and apparatus for producing trays with a plastic film laminated thereon|
    EP1145822B1|2000-04-04|2006-01-18|Brodrene Hartmann A/S|Method and apparatus for producing moulded pulp articles with a plastic film laminated thereon|
    FR2809656B1|2000-06-05|2003-02-07|Sai Automotive Allibert Ind|METHOD FOR FILLING THERMOPLASTIC SKIN, APPARATUS FOR IMPLEMENTING THE METHOD|
    US7888405B2|2004-01-30|2011-02-15|E. I. Du Pont De Nemours And Company|Aliphatic-aromatic polyesters, and articles made therefrom|
    US20080006378A1|2006-07-06|2008-01-10|Maciel Antonio N|Paper sheet with high/low density polyethylene|
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    USRE48027E1|2008-12-19|2020-06-02|Double Double D, Llc|Environmentally friendly liquid container and method of manufacture|
    US7954640B2|2009-05-01|2011-06-07|Ellery West|Paper jar packaging with coated walls|
    US20100279040A1|2009-05-01|2010-11-04|Ellery West|Paper Jar Packaging With Coated Double Side Walls|
    BR112012012738A2|2009-11-27|2016-08-30|Pakit Int Trading Co Inc|method for applying a barrier material to a molded fibrous product and a product produced by said method|
    WO2014193504A1|2013-05-09|2014-12-04|Paul Zhang|Automatic multi-station integrated equipment and method for forming waste-paper-based packaging products|
    US9952160B2|2014-04-04|2018-04-24|Packaging Corporation Of America|System and method for determining an impact of manufacturing processes on the caliper of a sheet material|
    US10035621B2|2015-04-08|2018-07-31|Double Double D, Llc|Multi-barrier bottles having tabbed preforms, and methods of forming the same|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/462,257|US3957558A|1974-04-19|1974-04-19|Method and apparatus for making a molded pulp product with a liquid impervious layer integrally secured thereon|
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