• 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 spun-bonded, preferably paper-like, polyolefin sheet (1) or fleece composed of heat and pressure bonded minute polyolefin fibres which is vapour- and gas-pervious but impervious to liquid water and dust, naturally water-­resistant and of high tensile and tear strength, is rendered heat-weldable. The material is used for making an applicator for releasing volatile substances, e.g. phosphine derived from metal phosphides at a controlled rate and with complete protection of the contents against liquid water. Excessive local phosphine build-up is avoided. The release rate is controlled by the sheet material itself and by its available surface area. A heat weldable sheet material (1), in particular for the above purposes, is coated, preferably by powder sprinkle coating with a thermoplastic highly porous heat welding bonding layer (2), e.g. EVA, melting so much lower (say 30 to 80°C lower) than the polyolefin fibres that a heat welding seam (6) forms before the fibres melt so that the physical properties of the polyolefin fibres and the gas permeability are substantially retained.
    公开号:SU1664118A3
    申请号:SU884355779
    申请日:1988-05-26
    公开日:1991-07-15
    发明作者:Фримель Вольфганг；Эрвин Барт Фолькер
    申请人:Детиа Фрейберг Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to packages intended to accommodate a solid consistency of the chemical, which slowly releases gaseous active substances after exposure to ambient humidity.
    The purpose of the invention is to reduce the harm during operation.
    FIG. 1 shows a packet for a pre-chemical; figure 2 is the same, with a porous coating of the inner surface of one of the sheets; fig.Z - the same, with additional sheets; 4 is the same with internal coatings; Fig. 5 is the same, with a porous coating on the inside surface of both sheets.
    The pre-chemical package contains sheets 2 and 3 bonded to edges 1 by means of a weld, forming cavity 4 and made at least partially from gas-permeable and permeable water vapor of a nonwoven fibrous polyolefin material that is dust- and water-proof and resistant to water transmission a steam of 500-700 g / m2 / day and an air permeability of 10-50 s, the permeable area of the nonwoven fibrous material being 0.8-25 cm / g of active substance released.
    Air permeability, equal to 10-50 s, corresponds to its definition by the Gerley-Hill method, which involves determining the time (in seconds) for 100 ml of air to pass through 6.4 cm of area under a pressure of 125 mm of water. This method conforms to the method of U.S. Standard ASTM D 726-58 for determining the air permeability of paper.
    The fibers have a thickness of 0.01-0.001 microns.
    A distinctive feature of the invention is that the permeable area of the nonwoven fibrous material is 0.8-25 m / g.
    WITH
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    with
    The active substance can be implemented by various structural measures, examples of which are schematically represented in FIG. 1-6, which represent the cross-section of the forms of the proposed package,
    According to the image in Fig. 1, the bag consists of the first sheet 2, which is a gas-permeable and translucent pair and a water- and dust-tight nonwoven fibrous polyolefin material, and the second sheet 3, which is a gas and moisture-proof material, for example, laminated a material of polyolefin and aluminum foil, a multilayer material based on polyethylene or a synthetic resin, such as, for example, polyvinylidene chloride. At least the side of sheet 3 facing sheet 2 has a melting point lower than the melting point of the material of sheet 1, and the difference should be sufficient to allow welding under the influence of heat on edges 1 without melting the polyolefin fibers of sheet 2. - it is also possible to place before welding in the zone of the edges 1 a weldable adhesive layer, as was done in the package according to FIG. 6 described below.
    The cavity 4, formed by sheets 2 and 3, contains a hard chemical consistence chemical, which can be powder, granules or extruded products, such as balls or tablets. The chemical is preferably a composition based on aluminum or magnesium phosphide.
    According to the image in FIG. 2, the inner surface of the sheet 2 can be provided with a porous coating 5 consisting of a thermoplastic material with a melting point which is no more than 20 ° C below the melting point of the material of the sheet 2. The coating 5 is preferably made of ethylene copolymer and vinyl acetate or polyethylene. The coating 5 has a thickness of 20-40 microns and a porosity of 1-20%. The pairs have a diameter of 1-10 microns.
    Another embodiment of the invention is shown in FIG. In this case, a sheet 2, made of said nonwoven material, provided with a porous coating 5, is connected at both ends with additional sheets 6 and 7 made of the same material as sheet 3. Welding sheets 3, 7 and 8 is carried out in the manner described above. . It is also possible to connect only one end of sheet 2 with one additional sheet 6 or 7.
    In addition, one embodiment of the invention is presented in FIG. 4. In this case, sheets 2 and 3 are made of gas-permeable and permeable water vapor and a water- and dust-proof nonwoven fibrous material, and the sheet 2 is provided with a porous coating of the above characteristic, and the sheet 3 is partially provided with layers 8 and 9, made of a moisture-proof material, such as, for example, a copolymer of ethylene and vinyl acetate. Layers 8, 9 have a thickness of 10-100 microns.
    The embodiment of FIG. 5 is that both sheets 2 and 3 are made of gas-permeable and permeable water vapor and a water- and dust-proof nonwoven fibrous material, and their internal surfaces are provided with a porous coating 5 having a reduced characteristic. Sheets 2 and 3 are interconnected at the edges with the help of the material used to make the coating 5.
    Another embodiment of the invention is presented in FIG. In this case, both sheets 2 and 3 are made of gas-permeable and permeable water vapor and a water- and dust-proof nonwoven fibrous polyethylene material, and the sheets are provided with inner coatings 10 made of moisture-proof material, for example, a copolymer of ethylene and vinyl acetate. Coatings 10 have a thickness of 10-100 microns. They are also used as an adhesive. On the right side of the package, the coating 10 is already interconnected at the edges x 1, while on the left side both coatings 10 are still to be welded under the action of heat and pressure in the direction of arrow 11.
    The proposed package can be used in the same form as the known one, for example, in the form of a tape consisting of a plurality of packages interconnected through flexible connecting portions.
    In all the described embodiments of the invention, the sheet made of the said nonwoven material has a thickness of 0.05-0.5 mm. In the embodiment of FIGS. 1, 2, sheet 2 has a thickness of 0.1-1 mm.
    The invention is illustrated by the following examples.
    Example 1. The bags according to FIG. 5 are filled with 34 g of a standard powdered chemical based on an aluminum phosphide composition,%. technical aluminum phosphide 70, urea 18.5, monoammonium phosphate mixture and sodium carbonate 7.5 v
    ratio of 1: 1 and aluminum stearate 4. Each package has dimensions of approximately 100x90 mm. These bags are tested in a 0.5 m3 laboratory chamber in which a cup-shaped vessel filled with water is placed, which serves to maintain the desired humidity. The experiments were carried out at a constant temperature of 20 ° C.
    At various times, the concentration of phosphine is measured in the chamber for 240 hours. The results of the experiments showed that the proposed package provides a more uniform degree of release of the active substance than the known (having the same dimensions and the same content of the chemical).
    Example 2. Three variants of the package according to Fig. 3 are made, each of which has dimensions of 100x90 mm, but in one variant sheet 1 has dimensions of 1x9 cm, in the other 2x9 cm, and in the third 3x9 cm. Each package contains 24 g technical magnesium phosphide impregnated with 3% paraffin. All samples are exposed to humid air in a 0.5 m3 chamber. The conditions of the experiments are the same as in Example 1. At various times during the 240 hours, the concentration of phosphine in the chamber is determined. The results of the experiments showed that the proposed packages provide more
    a uniform degree of release of the active substance than the known (having the same dimensions and the same content of the chemical).
    In addition, in examples 1, 2, it was found that the proposed package provides a longer period of release of the active substance than the known one.
    The invention makes it possible to reduce the harm during operation by providing a more uniform degree of release of the active substance.
    权利要求:
    Claims (1)
    [1]
    Claims of an Invention Package for a pre-chemical containing a sheet joined along the edges by means of a welded seam; made at least in part from gas-permeable and transmissive water vapor of a non-woven fibrous polyolefin material, characterized in that, in order to reduce harm during operation, the non-woven fibrous polyolefin material has dust and water impermeability and has the ability to transmit water vapor 500-700 g / m2 day and air permeability 10-50 s, moreover, the permeable area of the nonwoven fibrous material is 0.8-25 cm2 / g of active substance released.
    7
    FIG. 7
    FIG. 2
    FIG. five
    U 11
    7 / W
    9and d
    YU
    类似技术:
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    TH6480A|1989-09-01|Plate welding and volatile containment applications
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    SI8810966A8|1996-10-31|Applicator for the slow release gasses or wapours medium for pest control
    同族专利:
    公开号 | 公开日
    BR8802477A|1988-12-20|
    DE3877823T2|1993-06-24|
    IL86373A|1991-06-30|
    ES2095357T3|1997-02-16|
    EP0686571A1|1995-12-13|
    EP0292948B1|1993-01-27|
    EP0510732A3|1994-04-06|
    AT146745T|1997-01-15|
    AR246845A1|1994-10-31|
    EP0292948A3|1989-12-06|
    DE3856286D1|1999-02-04|
    GR3029363T3|1999-05-28|
    ES2125527T3|1999-03-01|
    AT85020T|1993-02-15|
    DE3855728D1|1997-02-06|
    EP0510732A2|1992-10-28|
    DE3855728T2|1997-04-17|
    SI20632A|2002-02-28|
    KR880014018A|1988-12-22|
    EP0510732B1|1996-12-27|
    DD281537A5|1990-08-15|
    DE3877823D1|1993-03-11|
    MX173207B|1994-02-09|
    PT87582A|1989-05-31|
    IN170021B|1992-01-25|
    DE3856286T2|1999-07-01|
    EP0292948A2|1988-11-30|
    GR3007443T3|1993-07-30|
    DE292948T1|1992-04-30|
    AU609131B2|1991-04-26|
    YU48283B|1998-05-15|
    JP2607624B2|1997-05-07|
    AT174861T|1999-01-15|
    YU96688A|1990-04-30|
    YU46628B|1994-01-20|
    ES2037134T3|1993-06-16|
    YU70992A|1995-03-27|
    UA7154A1|1995-06-30|
    GR3022339T3|1997-04-30|
    PT87582B|1993-09-30|
    EP0686571B1|1998-12-23|
    JPS6456537A|1989-03-03|
    KR970000135B1|1997-01-04|
    AU1634088A|1988-12-01|
    PH25842A|1991-12-02|
    IL86373D0|1988-11-15|
    US4932155A|1990-06-12|
    引用文献:
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    AR228128A1|1978-06-22|1983-01-31|Freyberg Chem Fab Werner|PESTICIDE DEVICE AND PREPARATION PROCEDURE OF A TOXIC ATMOSPHERE APPLYING SUCH DEVICE|
    US4270658A|1978-10-27|1981-06-02|Schuster Samuel J|Breathable, sterilizable receptacles for storing articles in sterile condition|
    DE7906765U1|1979-03-10|1979-07-05|Haufe Ludwig|Pesticide Pouch|
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    DE3325826A1|1983-07-18|1985-01-31|Dr. Werner Freyberg Chemische Fabrik Delitia Nachf., 6941 Laudenbach|BAG FOR INCLUDING OUTGASSING PEST CONTROL|
    US4653644A|1984-06-18|1987-03-31|Degesch Gmbh|Package for toxic fumigant material in pellet or tablet form and method of making same|
    US4600589A|1984-10-22|1986-07-15|The United States Of America As Represented By The Secretary Of The Army|Meat tenderization with a proteolytic enzyme from Trichoderma reesei|
    US4657804A|1985-08-15|1987-04-14|Chicopee|Fusible fiber/microfine fiber laminate|
    IN170021B|1987-05-26|1992-01-25|Deita Freyberg Gmbh|IN170021B|1987-05-26|1992-01-25|Deita Freyberg Gmbh|
    JPH03112906A|1989-09-27|1991-05-14|Mitsubishi Gas Chem Co Inc|1,3,5-trioxane packaged body|
    US5110641A|1990-12-14|1992-05-05|E. I. Du Pont De Nemours And Company|Melt-dispersible package for melt-processible polymers|
    ZA929997B|1992-09-25|1994-06-20|Casa Bernardo Ltda|100% Polyester reinforced material for the manufacture of a laminated film to form an applicator for holding a pest control agent.|
    TW360548B|1993-04-08|1999-06-11|Powderject Res Ltd|Products for therapeutic use|
    AU689530C|1994-01-13|2003-07-10|Barry Lewis Lazarus|A ventilated container|
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    US6065687A|1994-05-24|2000-05-23|Shin-Etsu Chemical Co., Ltd.|Sustained release preparations|
    US6706344B1|1994-12-29|2004-03-16|Electric Power Research Institute, Inc.|Controlled fumigation of wooden structures|
    US5656282A|1995-01-05|1997-08-12|The Procter & Gamble Company|Package for containing and applying a bug repellent patch|
    EP0909248B1|1995-08-04|2002-04-10|Thornton Investmments Ltd, The Trustee of Thornton Number One Trust|Breakable sachet|
    US5943301A|1996-01-30|1999-08-24|Citizen Watch Co., Ltd.|Electronic timepiece with power generating function|
    US6162454A|1996-03-08|2000-12-19|The Procter & Gamble Company|Insect repellent article providing low contact wetness|
    US6629599B2|1996-04-03|2003-10-07|Sealed Air Corporation|Foam in bag packaging system|
    US6272813B1|1996-04-03|2001-08-14|Sealed Air Corporation|Foam in bag packaging system|
    US5699902A|1996-04-03|1997-12-23|Sperry; Laurence Burst|Foam in bag packaging system|
    US5996782A|1997-04-14|1999-12-07|Sealed Air Corporation|Foam in bag packaging system for manual use|
    AU700670B1|1997-10-10|1999-01-14|Debrana Pty. Ltd.|A method of controlling plant pathogens residing in the bark of plants and vines|
    US5983557A|1997-11-06|1999-11-16|The United States Of America As Represented By The Secretary Of The Army|Lethal mosquito breeding container|
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    US9550083B2|2009-09-18|2017-01-24|David Landis Campbell|Protective barrier and a method for its use|
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    IT1403162B1|2010-12-14|2013-10-04|Lavazza Luigi Spa|"CARTRIDGE FOR THE PREPARATION OF A LIQUID PRODUCT"|
    DE102011101177A1|2011-05-11|2012-11-15|Jura-Plast Gmbh|bag|
    US8691154B2|2012-02-17|2014-04-08|Diversey, Inc.|Apparatus for the generation of cleaning and/or sanitizing solutions|
    DE102012222719A1|2012-12-11|2014-06-12|Robert Bosch Gmbh|Film bag for storing a fluid and device for providing a fluid|
    US20150007487A1|2013-07-03|2015-01-08|Rockwell Automation Technologies, Inc.|System and method for incorporation of pest repellent with bus bar cover components|
    EP3480352B1|2016-03-10|2020-02-12|Reifenhäuser GmbH & Co. KG Maschinenfabrik|Packaging|
    US10538928B2|2016-06-10|2020-01-21|David Landis Campbell, SR.|Protective barrier comprising a seam having an integrated dustcover system and a method for its use|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ZA873761|1987-05-26|
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