• 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 invention relates to the extrusion of synthetic tubular films from air-cooled inflow heads. The purpose of the invention is to improve the performance of the device and the quality of manufactured films by eliminating their vibrations during air cooling and increased strength. The device contains cooling and nozzle rings. A nozzle slot is formed between them. Nozzle gap is parallel or acute angle to the tubular film. The direction of the surface of the cooling rings is in the form of the sides of the depression of the bearing surfaces of the aircraft wing of the subsonic profile in cross section. The entrance of the nozzle rings is made in the form of prekryshkov. The exit parts of the cooling rings are made with annular blades with a sharp edge for flowing air. The device has outer and inner nozzle and cooling rings. They are arranged in a shah order relative to each other. The outer rings are movably mounted. The nozzle ring can be completely T-shaped with the formation of two nozzle slots. Between the extrusion nozzle and the first cooling ring is mounted a conical expansion element. By executing the nozzle and cooling rings in the form of a pre-cap and a wing, an air intake effect is created that stabilizes the tubular film. Due to the injection effect, additional air is sucked through the nozzle ring, supporting cooling. The external and internal arrangement of the rings provides cooling of the films at a high speed. The presence of a conical expansion element makes it possible to cool nonstable films with a high productivity. 7 hp f-ly, 7 ill. ABOUT)
    公开号:SU1424726A3
    申请号:SU843716503
    申请日:1984-03-30
    公开日:1988-09-15
    发明作者:Упмайер Хартмут
    申请人:Виндмеллер Унд Хельшер (Фирма)；
    IPC主号:
    专利说明:


    cm
    114
    The invention relates to the extrusion of synthetic tubular films from air-cooled blow heads.
    The aim of the invention is to improve the performance of the device and the quality of the films produced by eliminating their vibrations during air cooling and increasing STRENGTH.
    Figure 1 shows one qTopoHa cooling device, a longitudinal section; in fig. 2 - cooling device with cooling rings located on the inner and outer sides of the film in the form of floors, longitudinal section; in fig. 3 - a fragment of the cooling device; FIG. 4 is a section A-A in FIG. 3; in fig. 5 - cooling device with T-shaped nozzle rings, longitudinal section; in fig. 6 - node I in figure 5; in fig. 7 - conical expansion element made of cooling rings, longitudinal section.
    I
    The cooling device contains
    concentric with the axis of the extruded film at a distance from each other in the direction of extrusion cooling rings 1. Over the cooling rings 1 in the direction of the cooling air, nozzle rings 2 are mounted. Between each cooling ring 1 and the nozzle ring 2 is formed a nozzle slot 3 of an annular shape for air supply. The nozzles 3 are parallel or at an acute angle to the wall of the tubular film. The guiding surfaces of the 4 cooling rings 1 are turned to the walls of the tubular film; the longitudinal section is convexly curved and made in the form of the thinning sides of the bottom of the upper surfaces of the aircraft edge of the subsonic profile in section. The inlet part 5 of the nozzle rings 2 are made in the form of slats. The inlet parts 6 of the cooling rings 1 are located with the overlap of the inlet parts 5 of the nozzle rings 2. The outlet parts 7 of the cooling rings 1 are made in the cross section in the flow area in the form of an arc with the formation of guide surfaces 4 rounded or sharply edged blade blades 8 for flowing air.
    24726
    0
    five
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    five
    0
    five
    0
    five
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    five
    The nozzles 3 are connected to pipes 9 and 10 for supplying cooling air, which are made with holes 11. The cooling ring 1 is connected to each other by means of pipes 9 and 10 for supplying cooling air flow. Cooling 1 and nozzle 2 rings are located on the inner and / or outer side of the tubular film. The cooling 1 and nozzle 2 rings for cooling the outer surface of the tubular film are arranged in a checkerboard pattern with respect to the cooling 1 and nozzle 2 rings for cooling the inner surface of the tubular films.
    The cooling 1 and nozzle 2 rings are located in the holder 12. The rings 1 and 2 for cooling the outer surface of the tubular films are mounted for movement. At least a pair of cooling rings 1 are mirrored relative to each other (Fig. 6), and the nozzle ring 13 mounted between them is T-shaped in cross-section to form two nozzle slots 14 and 15 for supplying air to the guide surfaces 4 cooling rings 1. Between the extrusion ring nozzle 16 and the first cooling ring 1 is mounted a conical expansion element 17, made in the form of conical 18 and parabolic 19 and 20 cooling rings. The working surfaces of the cooling rings 18, 19 and 20 have the shape of a wing of a subsonic profile in cross section. The entrance 21 of the nozzle rings 22 is made in the form of a slat. At the inlet portion 23 of the conical expansion element 17, a nozzle slit 24 is provided for supplying lubricating air. The cooling rings 1 have an annular cavity 25. A central tube 26 is mounted in the device to suck up the used air from the pile film. The pipe 26 is located in an annular cavity 27 serving to supply fresh air. For supplying air with an external cooling ring 1, pipes 28 and ring pipe 29 are mounted in the holder 12.
    The device works as follows.
    From the nozzle gap 3 between the nozzle ring 2 in the form of a slat and the cooling ring 1 for blowing air -. 1A
    The main air flow is injected, and this flow, due to the pressure generated due to the high speed of the injection, affects the tubular film to be cooled. Taking into account the tubular film, the cooling ring 1 together with the nozzle ring 2 in the form of a slat has the shape of an annular wing.
    By injecting a jet of air through the nozzle ring 2 in the form of a slat, additional air flow is sucked in to support the cooling and direction of the air.
    In accordance with the principle of the carrier wing at the end of the guide surface A, the cooled 1st air flows from the cooling ring 1 with negligible turbulence in the direction of movement of the tubular film, and from the outlet part 7 in the form of a bearing plane, under reduced pressure, the air without vortices deviates into flow direction and flows as an air stream towards the cooling air and maintains it.
    The first (Fig. 2) cooling ring 1 is located on the inner side of the film directly behind the extrusion nozzle 16. From the annular cavity 25 of the cooling ring 1, cooling air through the pipes 9 is directed into the cavity 25 of the second cooling ring and through the opening 11 a portion of air is supplied to nozzle slot 3.
    Further, air flows from the annular cavity 25 of the second cooling ring 1 through the guide tubes 9 into the annular cavity 25 of the last cooling ring 1, from which the cooling air then exits through the nozzle slot 3.
    The used cooling air then flows in the direction of the arrow into the central tube 26, through which it is sucked off.
    Fresh cooling air is supplied to the inner cooling rings 1 through the annular cavity 27 enclosing the central tube 26.
    The ring conduit 29 is connected to the uppermost cooling ring 4 1. Through the pipelines 10, the conduit 29 is also connected to the lower cooling rings. The greatest cooling is achieved if the cooling rings 1 are located according to 726
    According to FIG. 2, wherein the tubular film rests on the inner and outer cooling rings 1 that follow each other, and are accordingly sucked by them approximately in the form of a meander so that despite a certain free length of the jet, due to the mutual support, very much
    0 quiet passage of the film in the form of a sleeve with simultaneous intensive cooling. The sleeve film maintains the height of the floors of the cooling rings 1 having the same 5 diameter. Due to the cooling rings 1, the blown film must be so cooled that, after passing through the upper cooling ring 1, it reaches the desired diameter of the sleeve and then cures. The transition zone behind the last cooling ring 1 contributes, due to the reduced melt temperature, to an increase in the film strength. In known installations for the manufacture of a blown film, due to the high internal pressure in the blown film, spontaneously stretches from the melt without appreciable
    0 increase strength.
    The smallest cooling effect is achieved with the help of a floor cooling unit. To start the installation, the outer cooling rings 1, by means of their holders 12, are displaced upward, as a result of which the beginning of the sleeve is pulled through. After dragging the outer cooling rings 1
    Q is again lowered to their working position.
    FIG. 3 and A shows the molded design of the inner and outer cooling rings 1. Separate parts are removed and, after appropriate processing, are assembled by fitting each other.
    The connecting pipes 9 and 10 are arranged with regard to the decreasing sectors approximately mirror with respect to the wall of the extruded film. Connecting pipes 9 and 10 in the form of a sector arc form between the adjacent pipes slots for outflows or flow through which heated air can flow into the atmosphere and into the blown film.
    Ring Blades 8 provide back air moaning and mixing
    five
    with its cooling air from the guiding surfaces 4 without twists Pa. Figs. 5 and 6 two mirrored rings 1 are depicted, between which a T-shaped nozzle ring 13 is mounted. Such an embodiment serves for cooling; thick films inside which increased pressure can lead to a film-like sleeve in the region of its neck that is pressed to covering the film shell in the form of a sleeve outside the cooling rings, therefore

    47Z6
    tubular films containing concentrically concentric blow molding heads located behind the extrusion nozzle in the extrusion film axis spaced apart from each other in the direction of extrusion, cooling rings mounted to the outlet part of the nozzle rings 10 in front of the cooling rings in the direction of the cooling air flow annular shaped slits for air supply, located parallel to or at an acute angle to the wall
    leaving the nozzle slots with a cooling 15 sleeve film and made with the common air is throttled and with the tilting of the direction of its flow drains on the back sides of the rings forming the nozzle slots. If the increased inflation pressure on the neck of the film in the form of a sleeve exerts such a reverse effect that the film shell in the form of a sleeve forces the cooling air pillow between it and the cooling ring that surrounds it.
    To prevent this, air flows out to both sides of the nozzle slots 14 and 15, a more stable air cushion is created, and increased inflation pressure to stretch the tubular film cannot press the film with the outer cooling ring 1.
    Increased inflation pressure has a negative effect in the case of the use of such unstable synthetic materials, which immediately after leaving the extrusion ring nozzle have a pronounced tendency to swell. With an increased inflating pressure, the neck of the tubular film can be inflated in the form of an air bubble until it breaks. A conical expansion element 17 with a nozzle slot 24 for supplying lubricating air has a stabilizing suction effect on the neck of the tubular lacquer, in particular when it has forming lines in the shape of a bearing crest.
    权利要求:
    Claims (8)
    [1]
    1. Cooling device for air-cooled synthetic exported blow molding heads
    guided surfaces for the passage of air, characterized in that, in order to increase the performance of the device and the quality of the films produced by eliminating their vibration during air cooling and increasing strength, the guide surfaces of the cooling rings in a longitudinal section are convexly bent and made in the form of the rarefaction sides of the bearing upper surfaces of the wing of the aircraft of the subsonic profile in section, and the entrance part of the nozzle rings is made in the form of slats, the input s portion of the cooling rings arranged to overlap the inlet portion of the nozzle ring and nozzle slots are arranged therebetween for supplying nabegayu- - incoming air flow on the guide surfaces of the cooling rings.
    [2]
    2. The device according to claim 1, which is based on the fact that the output parts of the cooling rings are filled
    a cross section in the region of the flowing stream in the form of an arc with the formation with rounded surfaces or rounded edges with a sharp edge for the flowing air flow.
    [3]
    3. The device according to claim 1 and 2, T is characterized in that it is provided with cooling air supply pipes made with openings communicating with the nozzles, and the cooling rings are interconnected by means of a cooling air flow supply pipe
    [4]
    4. Device on PP. 1-3, characterized in that the cooling and nozzle rings are located on the inner and / or outer side of the tubular film.
    71A
    [5]
    5. Device on PP. 1-4, in that the cooling and nozzle rings for cooling the outer surface of the tubular film are arranged in a checkerboard pattern with respect to the cooling and nozzle rings for cooling the inner surface of the tubular films.
    [6]
    6. The device according to paragraphs. 1-5, about the fact that the cooling and nozzle rings are located
    in the holder with which the device is provided, and the rings for cooling the outer surface of the tubular films are mounted for movement.
    [7]
    7. The device according to paragraphs. 1-6, characterized in that at least a pair of cooling rings are mounted mirror relative to each other, and the nozzle ring mounted between them is made T-shaped in cross section
    536
    ten
    I
    25
    .
    6
    eight
    with the formation of two nozzle slots for supplying air to the guide surfaces of the cooling rings.
    [8]
    8. The device according to PP. 1 to 7, characterized in that it is provided with a conical expansion element mounted between the extrusion annular nozzle and the first cooling ring, embodied in the form of conical and parabolic cooling rings with wing-shaped surfaces of the subsonic profile in section and with the inlet part of the nozzle rings in the form of a slat, and in the entrance section of the conical expansion element there is a gap at the nozzle for supplying lubricating air.
    Tet on there:
    pp sixteen; pp 7 and 8.
    n u n k
    t; x
    V /
     9, W
    Fig.Z
    4
    7
    Compiled by M. Fitisov Editor M. Parfenova Tehred M. Khodanych
    L1l
    Proofreader I. Muska
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    同族专利:
    公开号 | 公开日
    EP0121158B1|1986-12-17|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL280472A|1961-07-05|1900-01-01|
    GB1120075A|1967-06-26|1968-07-17|Shell Int Research|Device and process for cooling an extruded tubular thermoplastic film|
    DE2032346C3|1970-06-30|1982-12-23|Windmöller & Hölscher, 4540 Lengerich|Cooling device for tubular plastic films produced by means of a film blow head|
    DE2132098A1|1971-06-28|1973-01-18|Windmoeller & Hoelscher|COOLING DEVICE FOR PLASTIC TUBE FILMS MADE WITH A FILM BLOW HEAD|
    DE2256942A1|1972-11-21|1974-05-22|Reifenhaeuser Kg|Machine for prodn of blown thermoplastic film - with adjustable device for supplying additional air between blown film and cover plate|
    DE2259732A1|1972-12-06|1974-06-12|Reifenhaeuser Kg|Thin thermoplastics tube mfr. by external suction - around extruded tube resulting in better operational control than with internal blowing|
    DE2262190B2|1972-12-19|1975-02-06|Windmoeller & Hoelscher, 4540 Lengerich|Cooling device for plastic tubular films produced by means of a film blow head with air cooling|
    US4022558A|1974-05-06|1977-05-10|Mobil Oil Corporation|Apparatus for the extrusion of tubular thermo-plastic film|
    US4236884A|1975-09-05|1980-12-02|Gloucester Engineering Co., Inc.|Internal air cooling of tubular plastic film|
    US4272231A|1977-12-12|1981-06-09|Gloucester Engineering Co., Inc.|Air cooling ring for plastic film with independent lubricating air for film guide surface|
    KR880001768B1|1981-10-30|1988-09-13|스즈끼 세이지|Apparatus for forming blown films|
    JPS647576B2|1981-11-09|1989-02-09|Mitsui Sekyu Kagaku Kogyo Kk|
    US4472343A|1981-11-28|1984-09-18|Idemitsu Petrochemical Co., Ltd.|Tubular film process|
    US4447387A|1982-09-30|1984-05-08|Union Carbide Corporation|Process for manufacture of tubular film|CA1239261A|1984-04-09|1988-07-19|Quantum Chemical Corporation|Blown film extrusion|
    DE3436881C2|1984-10-08|1989-12-28|Windmoeller & Hoelscher, 4540 Lengerich, De|
    CA1274366A|1987-03-31|1990-09-25|Robert J. Cole|Bubble forming and stabilizing device for use in a continuous extrusion process for making a blown film|
    DE3815415C2|1988-05-06|1992-06-11|Paul Kiefel Gmbh, 6520 Worms, De|
    DE3820530C2|1988-06-16|1990-05-03|Reifenhaeuser Gmbh & Co Maschinenfabrik, 5210 Troisdorf, De|
    US5310329A|1992-02-05|1994-05-10|Cree Robert E|Air shroud device for a blown film extrusion line|
    US5560938A|1995-05-31|1996-10-01|Planeta; Mirek|Internal cooling air supply assembly|
    US5576029A|1995-06-02|1996-11-19|Planeta; Mirek|Internal cooling air supply assembly|
    AU765784B2|1999-09-14|2003-10-02|Clopay Plastic Products Company, Inc.|High speed method of making plastic film and nonwoven laminates|
    US20020074691A1|1999-09-14|2002-06-20|Robert M Mortellite|High speed method of making plastic film and nonwoven laminates|
    DE102006039563B3|2006-08-23|2007-11-08|Windmöller & Hölscher Kg|Tubular film extrusion device comprises a blown head, an external cooling ring having a ring shaped bearing surface at its bottom, and a centering unit placed opposite to the blown head and formed by three radially arranged linear guidance|
    EP2463077B1|2010-12-10|2014-01-29|Mondi Gronau GmbH|Attachment cooling ring for a film blowing head of a blown film system and method for producing a blown film|
    CN111844706A|2020-07-25|2020-10-30|孙乐强|Plastic film blowing machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3311932A|DE3311932C2|1983-03-31|1983-03-31|Cooling device for tubular plastic films extruded from a film blow head|
    DE19833333397|DE3333397A1|1983-09-15|1983-09-15|Cooling device for plastics tubular films extruded from a film blowing head|
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