JP2009113031A - Die head equipped with outlet slot for applying hot-melt product - Google Patents

Die head equipped with outlet slot for applying hot-melt product Download PDF

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JP2009113031A
JP2009113031A JP2008237250A JP2008237250A JP2009113031A JP 2009113031 A JP2009113031 A JP 2009113031A JP 2008237250 A JP2008237250 A JP 2008237250A JP 2008237250 A JP2008237250 A JP 2008237250A JP 2009113031 A JP2009113031 A JP 2009113031A
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hot melt
melt product
outlet slot
die head
width
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Latorre Jesus Francisco Barberan
フランシスコ バルベラン ラトーレ イエズス
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0266—Coating heads with slot-shaped outlet adjustable in length, e.g. for coating webs of different width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material

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  • Coating Apparatus (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Confectionery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a die head that supplies an outlet slot with a hot-melt product and can set up an optional coating width by an efficient method by enabling a system for swiftly changing the coating width. <P>SOLUTION: The die head includes a central channel 10 for supplying the outlet slot 1 with the hot-melt product, and channels 11, 12 for supplying the same outlet slot 1 with the hot-melt product through each of mechanisms 4, 5 for moving size-setting means 2, 3, wherein the channels 11, 12 move together with the size-setting means 2, 3 so that the hot-melt product is ceaselessly supplied to the inside of the outlet slot 1 set up for constant coating. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ホットメルト接着剤又はその類似製品（以下「ホットメルト製品」という。）を塗布するためのダイヘッドに関し、前記ダイヘッドでホットメルト製品が塗布される幅の調整及びホットメルト製品供給の開始と終了に特に影響を及ぼすいくつかの改良を提案する。   The present invention relates to a die head for applying a hot-melt adhesive or a similar product (hereinafter referred to as “hot-melt product”), and adjustment of a width at which the hot-melt product is applied by the die head and start of supply of the hot-melt product. And we propose some improvements that have special impact on termination.

反応性ポリウレタンやその類似製品といったホットメルト接着剤を使用してコーティング材を塗布する際、これらのホットメルト製品を塗布材料に連続的かつ均一に塗布する必要がある場合はリップを有するダイヘッドが使用され、ホットメルト製品を溶融させてダイヘッドに送る供給ユニットから、溶融されたホットメルト製品は可撓性のある加熱された管を通ってダイヘッドに入る。   When coating materials are applied using hot melt adhesives such as reactive polyurethane and similar products, die heads with lips are used if these hot melt products need to be applied continuously and uniformly to the coating material The melted hot melt product enters the die head through a flexible heated tube from a supply unit that melts the hot melt product and sends it to the die head.

このタイプのダイヘッドでは、塗布面への連続的な塗布を行うために、ホットメルト製品は、ホットメルト製品を付着させる面（以下「塗布帯」ということがある。）の幅と等しい長さの出口スロットを介して吐出される。   In this type of die head, the hot melt product has a length equal to the width of the surface to which the hot melt product is attached (hereinafter sometimes referred to as “coating zone”) in order to perform continuous application to the application surface. It is discharged through the outlet slot.

この方法を使用するときにホットメルト製品の塗布帯の幅を迅速に変更できるようにするために、本発明と同一の権利者の特許ＥＳ２２１１２９４にあるような、出口スロット内に配置された２つの寸法決定手段を形成するシステムが知られており、前記寸法決定手段は、いくつかの独立した制御手段によって個々に移動可能であり、それにより塗布されるホットメルト製品が、出口スロットで２つの寸法決定手段の間に囲まれた空間に制限され、これにより塗布帯の幅が決定される。   In order to be able to quickly change the width of the hot melt product application band when using this method, two two are arranged in the outlet slot as in patent ES22111294 of the same rights holder as the present invention. Systems for forming sizing means are known, said sizing means being individually movable by several independent control means, so that the hot melt product to be applied has two dimensions at the outlet slot. It is limited to the space enclosed between the determining means, whereby the width of the coating band is determined.

このシステムは、塗布帯の幅の調整には便利で信頼性があるが、出口スロットへのホットメルト製品の供給が前記出口スロットの中央部を介して行われる供給では、必要とされる塗布幅が大きくなるほど、空間を制限している寸法決定手段の間に設けなければならない前記出口スロットにホットメルト製品を供給するための流路の数が多くなり、寸法決定手段が端の流路より更に離れた位置になければならないので、それぞれの最小塗布幅は、スロット全体に分散されたホットメルト製品を供給する流路に応じて大きくなるという欠点がある。   Although this system is convenient and reliable for adjusting the width of the application zone, the application width required for the supply of hot melt product to the outlet slot through the center of the outlet slot The larger the number of flow paths for supplying hot melt product to the outlet slot that must be provided between the dimension determining means that limit the space, the dimension determining means is more than the end flow path. Since it must be in a distant position, each minimum application width has the disadvantage that it increases with the flow path supplying the hot melt product dispersed throughout the slot.

この問題を回避する１つの方法は、個別の弁を使ってホットメルト製品を出力スロットに供給する流路を互いに独立にし、塗布帯の幅について一番端の位置にある流路を閉じることができるようにすることで、寸法決定手段の間の距離を小さくすることである。   One way to avoid this problem is to use separate valves to make the flow paths for supplying hot melt product to the output slot independent of each other and to close the flow path at the extreme end with respect to the width of the application zone. By making it possible, the distance between the dimension determining means is reduced.

このシステムは、その一方で、寸法決定手段の間の距離の変化と出口スロットにホットメルト製品を供給する流路の開閉とを機械的かつ電気的に調整しなければならないので、操作が複雑であるという欠点を有する。更に、出口スロットに供給する流路内にホットメルト製品の残留物が常に残り、これにより前記寸法決定手段の外側にある閉じられた流路から寸法決定手段の外側に漏れが生じることがある。   This system, on the other hand, is complicated to operate because the distance between the sizing means and the opening and closing of the flow path for supplying the hot melt product to the outlet slot must be adjusted mechanically and electrically. It has the disadvantage of being. In addition, hot melt product residue always remains in the flow path feeding the outlet slot, which may cause leakage outside the sizing means from the closed flow path outside the sizing means.

本発明は、ホットメルト製品を塗布するための出口スロットを有する前述のダイヘッドに関するいくつかの改良を提案し、これにより塗布幅を迅速に変化させるシステムを可能にし、出口スロットにホットメルト製品を供給すると共に、効率的な方法で任意のサイズの塗布幅に設定することが可能である。   The present invention proposes several improvements with respect to the aforementioned die head having an exit slot for applying hot melt product, thereby enabling a system for rapidly changing the application width and supplying hot melt product to the exit slot. In addition, it is possible to set the coating width of an arbitrary size by an efficient method.

提案された改良によれば、ホットメルト製品の出口スロットに関して、前記出口スロットにホットメルト製品を供給するための１つの流路が中央位置に配置され、寸法決定手段の移動に用いられる調節のための機構を通って両端からホットメルト製品を供給するための別の２つの流路が備えられることで、前記両端の流路は、塗布幅を設定する寸法決定手段と共にその位置を変化させる。   According to the proposed improvement, with respect to the outlet slot of the hot melt product, one flow path for supplying hot melt product to the outlet slot is arranged in the central position for adjustment used for the movement of the dimensioning means By providing another two flow paths for supplying hot melt products from both ends through the mechanism, the positions of the flow paths at both ends are changed together with the dimension determining means for setting the coating width.

このようにして、流路から出口スロットへのホットメルト製品の流れが、塗布口とされる出口スロットのゾーン内に常に生じ、これにより、いかなるサイズの塗布幅でも出口スロットを介してホットメルト製品を十分に供給することができ、同時に塗布幅に対応しない寸法決定手段の外側でホットメルト製品が漏れることが防止される。   In this way, the flow of hot melt product from the flow path to the outlet slot always occurs in the zone of the outlet slot which is the application port, so that the hot melt product can be passed through the outlet slot at any application width. Can be sufficiently supplied, and at the same time, the hot melt product is prevented from leaking outside the dimension determining means that does not correspond to the coating width.

出口スロットにホットメルト製品を供給するための流路に関し、個別の開閉弁が更に設けられ、それにより両端の流路を塗布幅に応じて開閉することで、出口スロットに流れるホットメルト製品を均一に維持しながら極めて小さい幅から大きい幅まで塗布することができる。   With regard to the flow path for supplying the hot melt product to the outlet slot, a separate open / close valve is further provided, thereby opening and closing the flow path at both ends according to the coating width, so that the hot melt product flowing in the outlet slot is uniform. It is possible to apply from a very small width to a large width while maintaining the same.

一方、塗布幅を調整するために寸法決定手段を移動させる機構は、端からホットメルト製品を供給するための流路が内部を通っており、発熱体を有している。この発熱体は、ホットメルト製品が前記機構内を流れるようにホットメルト製品を流体に保つために必要な温度にし、これによってダイヘッドが極めて効率的にホットメルト製品を塗布できるようにする。   On the other hand, the mechanism for moving the dimension determining means for adjusting the coating width has a flow path for supplying the hot melt product from the end, and has a heating element. This heating element is at the temperature necessary to keep the hot melt product in fluid so that the hot melt product flows through the mechanism, thereby enabling the die head to apply the hot melt product very efficiently.

従って、本発明によって提供される改良によって、極めて優れた特徴を有するダイヘッドが得られ、このダイヘッドは意図された場所にホットメルト製品を塗布するという機能に適し、かつ望ましい物である。   Thus, the improvements provided by the present invention result in a die head having very good characteristics, which is suitable and desirable for the function of applying a hot melt product to the intended location.

本発明は、図１に示したようなタイプの、ホットメルト製品を塗布するためのダイヘッドに対するいくつかの改良に関するもので、塗布されるホットメルト製品は出口スロット（１）から吐出される。２つの寸法決定手段（２、３）が配置され、この２つの寸法決定手段（２、３）の間にホットメルト製品が吐出される出口スロット（１）が設けられる。寸法決定手段（２、３）は、それぞれ移動のための機構（４、５）と連結されてそれぞれの独立した制御手段（６、７）によって操作されて、寸法決定手段（２、３）を近づけるか遠ざけるかによってホットメルト製品が塗布される帯（８）の幅を設定する。   The present invention relates to several improvements to a die head for applying a hot melt product of the type shown in FIG. 1, wherein the applied hot melt product is discharged from an outlet slot (1). Two dimension determining means (2, 3) are arranged, and an outlet slot (1) through which the hot melt product is discharged is provided between the two dimension determining means (2, 3). The dimension determining means (2, 3) are respectively connected to the mechanisms (4, 5) for movement and operated by the respective independent control means (6, 7). The width of the band (8) to which the hot melt product is applied is set depending on whether it is closer or farther away.

塗布口となる出口スロット（１）へのホットメルト製品の供給は流路（９）を通して行われ、流路は従来、図１のように狭い帯（８）でホットメルト製品を塗布するために出口スロット（１）の中央部に配置された単一の流路（９）、又は図２のように広い帯（８）でホットメルト製品を塗布するために出口スロット（１）の全体にわたって分散された複数の流路（９）の形をとり、この場合、ホットメルト製品の塗布口となる出口スロット（１）に対応する流路（９）を単独で開くために個別の弁が使用される。   The hot melt product is supplied to the outlet slot (1) serving as the application port through the flow path (9), and the flow path is conventionally used for applying the hot melt product in a narrow band (8) as shown in FIG. Dispersed throughout the outlet slot (1) for applying hot melt products in a single flow path (9) located in the center of the outlet slot (1) or in a wide band (8) as in FIG. In this case, individual valves are used to independently open the flow path (9) corresponding to the outlet slot (1) serving as a hot melt product application port. The

本発明（図３）によれば、塗布されるホットメルト製品の出口スロット（１）に関し、前述の出口スロット（１）の中央部でホットメルト製品を供給する流路（１０）と、ホットメルト製品の塗布口の幅を設定するために寸法決定手段（２、３）を移動させる機構（４、５）を通ってそれぞれの端からホットメルト製品を供給する流路（１１、１２）とが備えられる。   According to the present invention (FIG. 3), with respect to the outlet slot (1) of the hot melt product to be applied, a flow path (10) for supplying the hot melt product at the center of the outlet slot (1), and the hot melt There are flow paths (11, 12) for supplying hot melt products from respective ends through mechanisms (4, 5) for moving the dimension determining means (2, 3) to set the width of the product application port. Provided.

このように、流路（１１、１２）はそれぞれ、ホットメルト製品の塗布口を形成する出口スロット（１）に開口したホットメルト製品を供給するための開口部を有し、前記流路（１１、１２）は、出口スロット（１）の幅を設定する寸法決定手段（２、３）と共に位置が変化し、これにより塗布されるホットメルト製品の流れは、常に塗布幅の寸法内に限定されることで、出口スロット（１）からの流れを一定に維持することが可能になる。   Thus, each of the flow paths (11, 12) has an opening for supplying the hot melt product opened to the outlet slot (1) that forms the application port of the hot melt product, and the flow path (11 , 12) change position with the sizing means (2, 3) which sets the width of the outlet slot (1), so that the flow of hot melt product applied is always limited to the dimension of the application width. This makes it possible to keep the flow from the outlet slot (1) constant.

図４が示すように、寸法決定手段（２、３）を移動させる機構（４、５）には発熱体（１３）が組み込まれ、それによってホットメルト製品が前記機構（４、５）内を流れるようにホットメルト製品を流体に保つことが可能な温度にすることで、塗布工程のいくつかの最適条件が達成される。   As shown in FIG. 4, the heating element (13) is incorporated in the mechanism (4, 5) for moving the dimension determining means (2, 3), so that the hot melt product moves in the mechanism (4, 5). By bringing the hot melt product to a temperature at which it can flow to keep it flowing, some optimum conditions of the application process are achieved.

ホットメルト製品が塗布口に送られる流路（１０、１１、１２）は、ホットメルト製品が塗布される帯（８）の幅に応じて前記流路を開閉することができるそれぞれの個別の開閉弁（１４、１５、１６）を有することで、図５のような幅の狭い塗布帯（８）の場合は、中央の流路（１０）だけが開かれた状態で端の流路（１１、１２）が閉じられたままでよく、一方図６のような幅の広い塗布帯（８）の場合は、３つの流路（１０、１１、１２）が開かれたままになり、塗布口を構成する出口スロット（１）から塗布されるホットメルト製品の均等な流れで、わずか数ミリメートル幅の極めて幅の狭い帯（８）から最大数メートルのかなり大きい幅の帯（８）まで、任意の幅の帯（８）を十分に効率的に塗布することができる。   The flow paths (10, 11, 12) through which the hot melt product is sent to the application port can be opened and closed individually according to the width of the band (8) to which the hot melt product is applied. By having the valves (14, 15, 16), in the case of the narrow application band (8) as shown in FIG. 5, only the central flow path (10) is opened and the end flow path (11 12) may remain closed, while in the case of a wide application band (8) as in FIG. 6, the three channels (10, 11, 12) remain open and the application port is Any flow from a very narrow band (8) of only a few millimeters wide to a fairly wide band (8) up to a few meters with an even flow of hot melt product applied from the constituent outlet slot (1) The band of width (8) can be applied sufficiently efficiently.

小さな塗布幅でホットメルト製品を塗布する、従来のダイヘッドの概略図である。It is the schematic of the conventional die head which apply | coats a hot-melt product with a small application | coating width | variety. 大きな塗布幅でホットメルト製品を塗布する、従来のダイヘッドの概略図である。It is the schematic of the conventional die head which apply | coats a hot-melt product with a big application width | variety. 本発明によって提供されるホットメルト製品を塗布するダイヘッドの概略図である。。1 is a schematic view of a die head for applying a hot melt product provided by the present invention. . 図３のダイヘッドの半分の拡大詳細図であり、寸法決定手段を移動させる機構が断面で示されている。FIG. 4 is an enlarged detail view of a half of the die head of FIG. 3, showing a mechanism for moving the dimension determining means in cross section. 図３のダイヘッドにおける、ホットメルト製品を幅の狭い帯で塗布するための配置を示す図である。FIG. 4 is a diagram showing an arrangement for applying a hot melt product with a narrow band in the die head of FIG. 3. 図３のダイヘッドにおける、ホットメルト製品を幅の広い帯で塗布するための配置を示す図である。It is a figure which shows the arrangement | positioning for apply | coating a hot-melt product with a wide belt | band | zone in the die head of FIG.

符号の説明Explanation of symbols

１ 出口スロット
２、３ 寸法決定手段
４、５ 機構
８ 帯
１０ 中央の流路
１１、１２ 端の流路
１３ 発熱体
１４、１５、１６ 開閉弁 DESCRIPTION OF SYMBOLS 1 Outlet slot 2, 3 Dimension determination means 4, 5 Mechanism 8 Band | zone 10 Central flow path 11, 12 End flow path 13 Heat generating body 14, 15, 16 On-off valve

Claims (3)

ホットメルト製品を塗布するための出口スロットを備え、前記出口スロット（１）内に２つの寸法決定手段（２、３）が組み込まれ、前記寸法決定手段（２、３）は、前記ホットメルト製品が塗布される幅（８）に応じて前記出口スロットの幅を設定するために、それぞれの機構（４、５）によって近づけ又は遠ざけられるタイプのダイヘッドであって、
塗布される前記ホットメルト製品の出口を構成する前記出口スロット（１）の部分に関して、前記出口スロットに前記ホットメルト製品を送る中央の流路（１０）と、前記寸法決定手段（２、３）を移動させる前記機構（４、５）のそれぞれを通って前記出口スロットに前記ホットメルト製品を送る端の流路（１１、１２）とが備えられ、前記ホットメルト製品を送る前記端の流路（１１、１２）は、前記寸法決定手段（２、３）と共にその位置が変化し、前記寸法決定手段（２、３）の間に前記ホットメルト製品の流れを常に維持することを特徴とするダイヘッド。 An outlet slot for applying a hot melt product is provided, two dimension determining means (2, 3) are incorporated in the outlet slot (1), and the dimension determining means (2, 3) A die head of the type that is approached or moved away by the respective mechanism (4, 5) in order to set the width of the outlet slot according to the width (8) to which
With respect to the portion of the outlet slot (1) that constitutes the outlet of the hot melt product to be applied, a central flow path (10) for sending the hot melt product to the outlet slot, and the sizing means (2, 3) And an end channel (11, 12) for feeding the hot melt product to the outlet slot through each of the mechanisms (4, 5) for moving the hot melt product. (11, 12) is characterized in that the position thereof is changed together with the dimension determining means (2, 3), and the flow of the hot melt product is always maintained during the dimension determining means (2, 3). Die head. 前記出口スロットに前記ホットメルト製品を送るそれぞれの前記流路（１０、１１、１２）に関し、それぞれに個別の開閉弁（１４、１５、１６）が備えられ、これにより前記塗布される帯（８）の幅に応じて、前記出口スロットへ前記ホットメルト製品を供給する前記流路（１０、１１、１２）が選択されることを特徴とする請求項１に記載のダイヘッド。   With respect to each of the flow paths (10, 11, 12) for feeding the hot melt product to the outlet slot, a separate on-off valve (14, 15, 16) is provided for each of the flow paths (10, 11, 16). 2. The die head according to claim 1, wherein the flow path (10, 11, 12) for supplying the hot melt product to the outlet slot is selected according to a width of the outlet slot. 前記寸法決定手段（２、３）を移動させるための前記機構（４、５）に、前記機構（４、５）を通って前記出口スロット（１）に開いた前記流路（１１、１２）を前記ホットメルト製品が流れるように、前記ホットメルト製品の流動性を維持するための発熱体（１３）が配置されたことを特徴とする請求項１に記載のダイヘッド。   The flow path (11, 12) opened to the outlet slot (1) through the mechanism (4, 5) to the mechanism (4, 5) for moving the dimension determining means (2, 3). The die head according to claim 1, wherein a heating element (13) for maintaining fluidity of the hot melt product is disposed so that the hot melt product flows.
JP2008237250A 2007-11-06 2008-09-17 Die head equipped with outlet slot for applying hot-melt product Pending JP2009113031A (en)

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