• 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:
    1. A method of manufacturing an endless thermoplastic film with a color edge strip, comprising the steps of supplying streams of molten unpainted thermoplastic, melted colored thermoplastic, and extruding a stream of unpainted and colored thermoplastics, characterized in that in order to increase the quality of the colored edge band by providing over the cross section of uniform color intensity, streams of colored and unpainted melts are served in parallel and the flow of colored melt is injected into unpainted first melt of an amount umenshayuschems continuously compared with the number of colorless melt to form a cross-sectional flow colored and uncolored thermoplastic oblique lines overlap angle 5-30 °. 2. An apparatus for producing an endless thermoplastic film with a colored edge band, comprising a main slit head, provided with a distributor and fittings arranged therein for supplying molten unpainted and colored thermoplastics, with upper and lower plates forming an outlet channel between them, characterized by that, in order to improve the quality of the color edge strip by providing a uniform color intensity over the cross section, it is provided with an additional slotted head mounted on a slotted die head, both heads provided with supporting beams, a fitting for supplying colored melt is equipped with an injection nozzle connected to it via a bypass, made in the form of a probe with a tapered groove placed transversely to the longitudinal axis of the device at the junction of the slotted heads in front of the supporting beam additional slotted head with entry into the outlet channel of the slotted head, and the bypass is located in the retaining beam of the additional slotted head. I (L
    公开号:SU1209024A3
    申请号:SU823479633
    申请日:1982-08-17
    公开日:1986-01-30
    发明作者:Бринкманн Ганс；Пабст Горст
    申请人:Динамит Нобель Аг (Фирма)；
    IPC主号:
    专利说明:

    i
    The invention relates to the manufacture of endless tapes from thermoplastic, in particular to methods and devices for making an endless film from a thermoplastic with a colored edge band and to devices for making an endless film from two streams of molten thermoplastic.
    There is a known method for manufacturing a shank from several thermoplastic streams, which includes the steps of feeding the thermoplastic streams and extruding the whole stream.
    A device for carrying out this method is known, which comprises an extrusion die made with thermoplastic supply means and with an outlet channel ij.
    A disadvantage of the known method and device is that it is not possible to make a film with a colored edge strip of good quality due to unregulated mixing of thermoplastic streams before leaving the extrusion head.
    The closest in technical essence and the achieved result to the proposed method is the production of an endless thermoplastic film with a colored edge band, which includes the stages of supplying currents of a molten unpainted thermoplastic, a molten painted thermoplastic and a 3KCTpy3HHj stream consisting of unpainted and colored thermoplastics.
    A device for carrying out this method comprises a main slit die, made with a distributor and located therein fittings for supplying molten unpainted and painted thermoplastics, with upper and lower plates forming between themselves an outlet channel.
    The disadvantage of this method is that, because the thermoplastic of the thermoplastic is about tenane, when the melt of the unpainted thermoplastic melts in the transverse direction to the direction of flow, it is possible to make only endless films with a colored edge band, the color of which is more intense at the place of supply, and towards the side surface of the film, the color intensity decreases090242
    shha, which degrades the quality of the colored edge band.
    The aim of the invention is to improve the quality of the color edge strip by providing uniform color intensity over the cross section.
    This goal is achieved by the fact that according to the method of producing an endless film from a thermoplast with a colored edge band, including the stage of feeding streams of molten unpainted thermoplastic, melted painted thermoplastic and extrusion consisting
    15 of the unpainted and short-circuited thermoplastics flow, the flows of the colored and uncolored melts are fed in parallel and the flow of the colored melt is injected into the unpainted
    20 melt in an amount continuously decreasing in comparison with the amount of unpainted melt, with the formation in the cross section of streams of colored and unpainted thermoplastics oblique line overlapped at an angle of 5-30,
    A device for the manufacture of an endless thermoplastic film with, ;; a winding edge strip, containing- 1, its main slit head, made with a distributor and located therein fittings for feeding molten 1-1 colored and colored thermoplastics, with the upper
     5 and the large plates forming an exhaust channel between them are equipped with an additional slotted head mounted on the end face of the slotted head, both heads provided with supporting beams, the nozzle for supplying the melt melted is supplied with an injection nozzle connected to it via a bypass, made in the form of a probe with a narrowing canal. placed in the transverse direction relative to the longitudinal axis of the device at the junction of the slotted heads in front of the supporting beam of the additional slotted head with a rear axle house into the exhaust channel p (spruce goat, moreover, the bypass is located in the retaining beam of the auxiliary w, (- a head.
    FIG. I shows the device
    55 for making endless films of polyvinyl butyrap with a colored edge band; general view; pas figs. 2 main slit head for sub40
    4S
    Chi melted painted thermoplastic cut, in FIG. 3 shows section A-A in FIG. 2; in fig. 4-6 - injection nozzle with a probe, front, top and side views; in fig. 7 — both slotted heads of the device, a slit; in fig. 8 - part of both slotted heads.
    A device for carrying out the method comprises a main slit head 1, made with a distributor 2 and located therein fittings 3 and 4 for feeding molten unpainted and colored thermoplastics. The main slit head 1 is made with the upper 5 and lower b plates, forming between themselves the exhaust channel 7. The upper plate 5 is made with an elastic protrusion 8 with an adjusting screw 9 and a supporting beam 10.
    To regulate the film thickness in the dispenser 2, a pullout 11 and a push 2 screws are located which act on the retaining cap 10 and the top plate 5. The additional slot head 13 is mounted on the end face of the slot head 1 (FIG. 8) and contains an injection nozzle 14, made in the form probe 15 for injecting colored plastic into a colorless melt flow of plastic in the zone between the two slit heads 1 and 13.
    Both slot heads 13 and I are provided with retaining beams 16 and 17, and fitting 4 for supplying the colored melt is connected to the injection nozzle 14 via a bypass 18 located in the support beam 16 of the additional slot head 13.
    The probe 15 is placed in the transverse direction relative to the longitudinal axis of the device at the junction of the slotted heads 1 and 13 in front of the retaining beam 16 with entry into the outlet channel 7 of the slotted head 1 and is made with a tapered groove 19.
    In addition to the slotted heads 1 and 13, the device contains extruders 20 and 21 with weighing tape dispensers 22 and 23, and the extruder 21 contains a metering pump 24 for supplying the paint-forming components, a valve 25 made in the form of a gear pump for adjusting the supply to the bypass 18 of color 2090244
    the melt, and valves 26 and 27 for feeding the melts from the extruder 20 and 21 to the slot heads 1 and 13. For adjusting the width of the film, the heads are equipped with aluminum screens 28.
    The method is carried out as follows.
    Through tape dispensers 22
    to and 23, thermoplastics are fed to extruders 20 and 21. The unpainted melt is fed through the fitting 3 into the main slit head 1, and the painted melt through the fitting 4 - into the additional slotted head 13 and the bypass 18 regulated by valve 25. The width of the fully colored portion of the film, as well as the unstained portion is due to
    20 for the purpose of using film. For
    In order to achieve the desired width in one 1-shee of both slotted heads, use plug-in aluminum screens 28, the resulting waste and edge strips are crushed and fed back through the scales to extruders 20 and 21.
    The probe 15, which is wedge-shaped and, depending on the required length of the wedge-shaped color section, entering the slit head 1 at different lengths, performs the function of the wedge-shaped screened uncolored melt flow and creates a wedge-colored color.
     plot. In a colored wedge-shaped area, the colored and uncolored flows of melts fuse with each other.
    The streams of colored and unpainted melts are fed in parallel, while the flow of colored melt is injected into the uncolored melt in an amount that continuously decreases
    as compared to the amount of unpainted melt, with the formation of a colored and unpainted thermoplastic in the cross section of streams of oblique line overlapped at an angle of 5-30. 50 Painted melt is injected in front of the supporting beam 16 from the side of the film using a probe 15 located in the direction transverse to the direction of flow of the melt 55 and having a groove 19 narrowing in cross section. The melt stream is throttled by narrowing the outlet channel 7 for the unpainted
    melt to such an extent that it is replaced by a colored melt without increasing the flow rate. The area of the wedge-shaped color is determined by replaceable probes with a length of 1 about 10-100 mm,
    At the injection site of the colored melt, the slit head 13 should have an adjustable spacer SC (not shown) in order to correct the thickness in the area of the wedge-shaped section.
    The colored melt is passed through the bypass 18, the grooves 19 to the wedge-shaped probe 15, and a stream of colored melt is obtained, decreasing along the length of the probe 15 with nullification at the tip of the probe.
    At the same time, the colorless melt flow is screened by an injection nozzle 14, the amount of colorless flow has a zero value at the point of the maximum flow of the colored melt through the probe 15. The amount of the unpainted melt supplied increases with decreasing amount of the painted colored melt through the probe 5, resulting in a colored wedge-shaped portion with angle of 5-30.
    At an angle of less than 5, only an inconspicuous decrease in the intensity of color occurs, which is critical when using the film in the production of multilayer glasses. At an angle greater than 30, the color bar becomes too narrow and does not have a uniform intense color.
    2090246
    If the specified lower and upper limits of the ratio of the length and width of the probe are not observed, reliable supply of employee i is not ensured; to create a colored wedge of colored melt as a laminar flow.
    The probe 15 in cross section can be made of a streamlined {O shape or in the form of a square, and the groove 19 - in the form of a semi-cylinder.
    To regulate the mass of the film in the area of the color wedge-shaped zone, including the thickness of the unpainted and painted oblique parts of the film, compare the thickness of the unpainted and painted parts of the film of the color wedge-shaped area and adjust the color melt through the computer.
    The width of the section with a color wedge depends on the shape of the probe, the size of the probe, the depth of the narrowing groove.
    25 Polyvinyl butyral or cellulose acetate is preferably used as a thermoplastic for making films.
    Utilization of the invention ensures that Kg covers the manufacture of films with or without a colored edge band, used as an intermediate layer in the manufacture of safety glass5, with colored edge-. Losu prxmeny, pd1 shielding and protection from the bright light of the upper portion of the windshield of vehicles.
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    VNYUSHI Order 307/61 Circulation 640 Subscription Branch PPP Patent, Uzhgorod, Projecto st., 4
    权利要求:
    Claims (2)
    [1]
    1. A method of manufacturing an endless thermoplastic film with a colored edge strip, comprising the steps of supplying flows of molten unpainted thermoplastics, molten colored 'thermoplastics and extrusion consisting of unpainted and colored thermoplastics, characterized in that, in order to improve the quality of the colored edge strip by providing over a cross section of uniform color intensity, flows of colored and unpainted melts are fed in parallel and the flow of colored melt is injected into an unpainted solution in an amount of lava, continuously decrease 'compared with the number of colorless melt to form a cross-sectional flow colored and uncolored thermoplastic overlapping oblique line at an angle of 5-30 °.
    [2]
    2. A device for the manufacture of an endless thermoplastic film with a colored edge strip, comprising a main slotted head made with a distributor and fittings located therein for supplying molten unpainted and colored thermoplastics, with upper and lower plates forming an outlet channel; characterized in that, in order to improve the quality of the color edge strip due to ensuring uniform color intensity across the cross section, it is equipped with an additional slot head mounted on the end of the the left head, both heads are equipped with retaining beams, the nozzle for supplying colored melt is equipped with an injection nozzle connected with it through the bypass, made in the form of a probe with a tapering groove placed in the transverse direction relative to the longitudinal axis of the device at the junction of the slot heads in front of the additional slot heads with entry into the outlet channel of the slot head, and the bypass is located in the retaining beam of the additional slot head.
    类似技术:
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    同族专利:
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    引用文献:
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    DE102008000685A1|2008-03-14|2009-09-17|Kuraray Europe Gmbh|Completely or partially colored interlayer film for laminated glazings, comprises plasticizer-containing polyvinyl acetal, perylene pigments, UV-absorber, and colored and colorless sections|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3132509A|DE3132509C2|1981-08-18|1981-08-18|Method and slot tool for producing a color wedge film|
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