• 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:
    Heat-sealable, optionally printable multilayer films which are oriented at least monoaxially and have an asymmetric structure, comprising a film comprising a propylene polymer as the base layer and two outer heat-sealing layers, of which 1) one heat-sealing layer comprises an ionomer resin or an ethylene vinyl acetate copolymer, and 2) the other, optionally printable heat-sealing layer comprises a copolymer made from ethylene and acrylic acid and optionally acrylic acid derivatives.
    公开号:SU1528338A3
    申请号:SU864028615
    申请日:1986-12-05
    公开日:1989-12-07
    发明作者:Шинкел Инго；Вагнер Хельмут
    申请人:Вольфф Вальсроде Аг (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to multilayer films suitable for packaging.
    The aim of the invention is to increase the strength of the welds.
    The desiccation of the invention is as follows.
    Ieotactic polypropylene with a density of 0.90-0.91 g / cm and a melt flow rate of 1-4 g / 10 min at 230 C / 21.6 N is used.
    Film clouding is determined by United States ASTM D 1003-52.
    To determine the gloss of the film, use / g photoelectric gloss by Dr. B. Lange consisting of low volt incandescent lamps and
    a condenser, which illuminate the sample at an angle of 45, and from a second shoulder mounted at an angle of 45 ° to the measurement plane with a perforated screen and a photocell. A fine-tuned indicator (micro-ammeter) is connected to this main switch, containing a current source and a lamp voltage regulator. Gloss is defined as 45% light reflected in an angle compared with a mirror whose surface is coated with silver, accepted as the 100% standard. When determining the gloss, a polished black glass plate should be put on the base plate as an intermediate standard.
    cl
    00
    with so
    00

    s
    since the mirror with silver coating may be covered by a coating of dirt in the air. This intermediate standard has exactly 5% glaze of a glass plate with cepe6p4Hbih coating. Galvanic indication of the photovoltaic cell by means of a regulating potentiometer taking into account the intermediate standard of black glass for the purpose and accuracy of the reference scale divisions. The test film above the matte black photographic paper is placed under the gloss gauge transversely to the direction of its manufacture relative to the optical axis of the gloss gauge in five spotless places. The galvanometric data is divided by ten and the mean value is determined.
    To determine the strength of the welds, the test is carried out at a weld pressure of 50. Here, the strength of the welds is the force required to separate the weld created under certain conditions (pressure 50) at a specified weld temperature, 1 temperature) (sample 15 mm wide).
    In order to establish the scratch resistance, the turbidity obtained by using the Ulbricht ball is determined. The clouding of the film is measured before or after scratching by 40 g of dust-free silicon carbide, which is poured over a period of time for a film 45 relative to the horizontal.
    Example 1 "On one surface of a polypropylene base with a density of 0.905 g / cm, a melting index of 3.3 g / 10 min at-230 ° C / 21.6 N / cm and a melting point of 160-166 C are applied layer A, made of a copolymer of ethylene and acrylic acid in a molar ratio of 94: 6, whose carboxyl groups are neutralized by zinc ions, and on the other surface, a layer B made of a copolymer of ethylene and acrylic acid in a molar ratio of 97: 3, and the compound thus obtained is stretched so that a multi-layered film is obtained with long stretch in relation to
    283384
    5: 1 and transverse stretching in a ratio of 10: 1,
    The thickness of the base 17.4 microns, and the thickness of each layer deposited on it is 1.3 microns,
    Before determining the strength of the welded needle, gloss and scratching strength, the layer consisting of copolymer JQ of ethylene and acrylic acid in a molar ratio of 97: 3 is subjected to preliminary electroprocessing (corona treatment),
    The test results are given
    five
    0
    0
    five
    0
    in tab. one.
    Example 2 (known). Example 1 is repeated, however, one layer of polypropylene is coated with layer A, made of ethylene / acrylic acid copolymer in a 94: 6 molar ratio, whose carboxyl groups are neutralized with zinc ions, and the other surface, layer A, made of
    5 of the same copolymer as layer A, but before the test, subjected to electrotreatment according to gtrimer 1,
    The test results are shown in Table 1,
    Example 3 Example 1 is repeated, however, a layer of polypropylene is 30 microns thick, and layers A and B are 1.2 microns thick.
    The results of the tests are given in Table 2.
    5 Example 4 (comparative). Example 3 is repeated, however, a layer A of 1.2 μm thick is made on one surface of a layer of polypropylene with a thickness of 30 μm, made of copolymer
    ethylene and acrylic acid in a molar ratio of 97: 3. and on the other surface - a layer A 1.2 μm thick, made of the same copolymer as layer A, but subjected to electrotreatment before the test.
    The test results are given in table 2
    Example 5, Repeat Example
    1, however, the polypropylene layer is 50 μm thick, and the D and B layers are 1.5 μm thick.
    The results are given in Table 3,
     Example 6 (comparative). Example 5 is repeated, however, layer A of thickness 5J is applied onto one surface of a layer of polypropylene 50 µm thick.
    1.5 μm, made of a copolymer of ethylene and acrylic acid in a molar ratio of 97: 3, and on the other surface - a layer A with a thickness of 1.5 μm, made of the same copolymer as layer A, but before testing subjected to - clean
    The results of the tests are given in table. 3
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    Capable of welding multi-layer film, made of a base layer based on polypropylene, on both
    28338
    the sides of which are coated with a polymer layer of ethylene copolymer, characterized in that, in order to increase the strength of the welds, one polymer layer is made of a copolymer of ethylene and acrylic acid in a molar ratio of 94: 6, whose carboxyl groups
    D is neutralized with zinc ions, and the other polyethylene layer is made of a copolymer of ethylene and acrylic acid in a molar ratio of 97: 3, and the main layer of polypropylene is heavy
    ) 5 17.4 - 50 microns thick, and each of the polymer layers is 1.2-1.5 microns thick,
    Table 1
    Blurred% of all
    film
    Scratch resistance
    Welded strength
    weld (N / 15 mm)
    at temperature
    90
    95 100 110 120

    table 2
    2.82.8
    1.6 / 33.3 1.6733.3 1.6 / 33.3
    with A with B with A
    with A with A
    0.2
    0.7
    1.0
    1.1 1.1
    ABOUT
    ABOUT
    about
    0.1 0.2
    0.4 0.6 0.7 0.9 1.0
    ABOUT
    oh oh
    0.1 0.1
    Clouding, z whole
    film
    Scratch resistance
    Welded strength
    2.82.8
    1.5 / 27.5 1.6 / 33.3 1.6 / 33.3 1.6 / 33.3
    Table 3
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    同族专利:
    公开号 | 公开日
    DK164494C|1992-11-23|
    PL151791B1|1990-10-31|
    AU6573986A|1987-06-11|
    DK585186A|1987-06-07|
    EP0224862B1|1991-04-24|
    JPS62134258A|1987-06-17|
    YU195986A|1988-04-30|
    MX160571A|1990-03-27|
    ES2021577B3|1991-11-16|
    NO864707L|1987-06-09|
    DK585186D0|1986-12-05|
    TR23379A|1989-12-28|
    YU45380B|1992-05-28|
    DD252579A5|1987-12-23|
    FI864961A|1987-06-07|
    KR870005803A|1987-07-07|
    FI864961A0|1986-12-04|
    CA1319094C|1993-06-15|
    AU589470B2|1989-10-12|
    AR245647A1|1994-02-28|
    BR8605982A|1987-09-15|
    EP0224862A3|1988-10-19|
    NO864707D0|1986-11-25|
    DE3678908D1|1991-05-29|
    EP0224862A2|1987-06-10|
    EG18385A|1993-04-30|
    ZA869208B|1987-08-26|
    FI88131C|1993-04-13|
    AT62883T|1991-05-15|
    HUT49074A|1989-08-28|
    DE3543118A1|1987-06-11|
    DK164494B|1992-07-06|
    FI88131B|1992-12-31|
    PL262820A1|1988-03-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2748534C2|2016-11-23|2021-05-26|Ирпласт С.П.А.|Multilayer film|JPS52155687A|1976-06-22|1977-12-24|Toray Ind Inc|Modified polypropylene composite film|
    US4147827A|1977-11-04|1979-04-03|Mobil Oil Corporation|Coextruded heat sealable laminar thermoplastic films|
    US4333968A|1980-01-25|1982-06-08|Mobil Oil Corporation|Thermoplastic packaging films with improved heat-seal characteristics|
    US4522775A|1982-03-04|1985-06-11|American Can Company|Apparatus and method for producing multilayered laminates|
    US4629657A|1982-12-13|1986-12-16|Enron Chemical Company|Biaxially oriented polypropylene film construction for special lamination|
    CA1336158C|1985-09-11|1995-07-04|Edward Norman Biel|Low temperature impact and puncture resistant termoplastic films and bags therefrom|DE3824286A1|1988-07-16|1990-02-08|Wolff Walsrode Ag|Multilayer film for coating substrate by contacting and applying heat|
    DE3935643A1|1989-10-26|1991-05-02|Wolff Walsrode Ag|HOT-LAYABLE, HIGH-GLOSSY MULTILAYER FILMS|
    NZ237420A|1990-03-23|1993-11-25|Grace W R & Co|Thermoplastic multilayer film having a thermosealing layer of ethylene-methacrylicacid copolymer or a blend thereof|
    AT167646T|1991-09-09|1998-07-15|Mobil Oil Corp|MULTILAYERED CLOUDY FILM STRUCTURES WITH REDUCED SURFACE FRICTION AND METHOD FOR THE PRODUCTION THEREOF|
    DE9218853U1†|1992-12-04|1995-11-02|Niehoff Kg Maschf|Winding spool for the production of a bundle with elongated winding material|
    US5419960A|1993-04-30|1995-05-30|Mobil Oil Corp.|Coated films with good low temperature sealing properties an hot tack|
    JPH11257263A|1998-03-11|1999-09-21|Toshiba Corp|Helical blade type compressor and refrigerating cycle device employing the compressor|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19853543118|DE3543118A1|1985-12-06|1985-12-06|SEALABLE MULTILAYER FILMS|
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