JP2019025404A - Coating device and coating method - Google Patents
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- 238000000576 coating method Methods 0.000 title claims abstract description 97
- 239000011248 coating agent Substances 0.000 title claims abstract description 82
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 41
- 239000000853 adhesive Substances 0.000 claims abstract description 39
- 230000001070 adhesive effect Effects 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000002904 solvent Substances 0.000 claims abstract description 25
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010408 film Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 6
- 238000001879 gelation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009820 dry lamination Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
本発明は、食品、飲料および医薬品等の包装材料に用いるドライラミネーション用接着剤の塗工装置及び塗工方法に関するものである。 The present invention relates to a coating apparatus and a coating method for an adhesive for dry lamination used for packaging materials such as foods, beverages and pharmaceuticals.
従来、紙、アルミニウム箔、プラスチックフィルム等の積層に際し、種々のラミネート法があるが、食品や医薬品等の包装材にはドライラミネーション法が多く使用されている。 Conventionally, there are various laminating methods for laminating paper, aluminum foil, plastic film, etc., but dry lamination is often used for packaging materials such as foods and pharmaceuticals.
ドライラミネーション法とは、例えばプラスチックフィルムのバリア膜等が成膜された面に、接着剤溶液を塗工、乾燥後に接着剤表面が未硬化で多少粘着性（タック性）を帯びている状態で、第２のプラスチックフィルムを加圧接着させて巻き取り、接着剤の硬化を完成させて積層する方法で、レトルトの包装材料で耐熱性を要求される場合、包装材料の「腰」を必要とする場合、あるいはトータル厚みが限定される場合などに好適に利用される。この方法のメリットは、第２のプラスチックフィルムに蒸散のための通気性が要求されず、したがって広範囲のフィルムや金属箔同志の貼り合わせに適用でき、接着機能として高度な耐熱性、耐水性、耐薬品性を発揮できることである。 In the dry lamination method, for example, an adhesive solution is applied to the surface on which a barrier film of a plastic film is formed, and after drying, the adhesive surface is uncured and somewhat tacky (tackiness) When the heat resistance is required for the retort packaging material, the second plastic film is wound by pressure bonding, and the adhesive is cured and laminated. This is preferably used when the total thickness is limited. The merit of this method is that the second plastic film is not required to have air permeability for transpiration, and therefore can be applied to the bonding of a wide range of films and metal foils, and has high heat resistance, water resistance, The ability to demonstrate chemical properties.
ドライラミラミネーションの接着剤塗工方法では、接着剤を有機溶剤で適当な粘度に希釈してフィルムに塗布する。図３、図４にドライラミラミネーションの接着剤塗工方法の代表的な２例を示す。図３は、接着剤パン方式で接着剤パンに溜めた接着剤をグラビアロールで第１フィルムに塗工後、オーブン等の乾燥ゾーンで乾燥した後、第２フィルムと加圧接着させて巻き取るドライラミネート装置の概略を示す。 In the dry lamination method, the adhesive is diluted to an appropriate viscosity with an organic solvent and applied to a film. 3 and 4 show two typical examples of dry-laminating adhesive coating methods. FIG. 3 shows an adhesive pan-type adhesive applied to a first film with a gravure roll, dried in a drying zone such as an oven, and then pressure-bonded to the second film and wound. An outline of a dry laminating apparatus is shown.
図４にはチャンバードクター方式の塗工装置を示す。チャンバードクターは、そのドクターブレード（図示せず）とシールプレート（図示せず）の先端縁を版胴ロールの表面に摺接するように配置することにより、チャンバードクター本体の溝部と、版胴ロールと、チャンバー本体の両端部に取り付けたシール部材（図示せず）と、ドクターブレードと、そしてシールプレートとによって囲まれ、外部に対して閉じた空間（塗布液室）を形成し、この空間に供給用ポンプにより塗布液を供給し、その塗布液を版胴ロール側に供給できるようになっている。 FIG. 4 shows a chamber doctor type coating apparatus. The chamber doctor is arranged so that the tip edge of the doctor blade (not shown) and the seal plate (not shown) are in sliding contact with the surface of the plate cylinder roll, the groove of the chamber doctor body, the plate cylinder roll, , Enclosed by seal members (not shown) attached to both ends of the chamber body, doctor blade, and seal plate to form a space (coating solution chamber) closed to the outside, and supplied to this space The coating liquid is supplied by the pump for use, and the coating liquid can be supplied to the plate cylinder roll side.
しかしながら、接着剤パン方式では接着剤パンにある接着剤は密封されておらず、溶剤が蒸散して増粘しやすい。また、チャンバードクター方式では。また、接着剤が接着剤貯留槽とチャンバードクター間を循環するので硬化が進みやすい。それゆえ、どちらの方式においてもゲル化、版詰まりが発生しやすいという欠点がある。 However, in the adhesive pan method, the adhesive in the adhesive pan is not sealed, and the solvent tends to evaporate and easily thicken. In the chamber doctor method. Moreover, since an adhesive circulates between an adhesive storage tank and a chamber doctor, hardening is easy to proceed. Therefore, both methods have a drawback that gelation and plate clogging are likely to occur.
ところで、接着剤を塗工できる状態に混合してから、硬化、ゲル化などが発生し、使用できないようになるまでの時間をポットライフ（可使時間）というが、特にポットライフが短い接着剤を使用した場合、前記の変化が速く進むため、塗工できない事態が発生する。 By the way, the time from when the adhesive is mixed in a state where it can be applied to when it becomes hard and gelled and becomes unusable is called pot life (pot life). When this is used, the above-mentioned change proceeds rapidly, so that a situation where coating cannot be performed occurs.
一方で、接着剤はフィルム等に塗工後に硬化を促進させるために４０℃前後の温度でエージング（熟成）を行う必要がある。特に機能性の高いレトルト用途、高耐性用途等の接着剤は、３〜５日のエージングを要する。エージング時間を短くすることができる接着剤は、ポットライフが短く、取り扱いが難しくなるというトレードオフの関係にある。 On the other hand, it is necessary to perform aging (aging) at a temperature of about 40 ° C. in order to accelerate the curing of the adhesive after coating on a film or the like. Particularly, adhesives for retort use, high resistance use, etc. with high functionality require aging for 3 to 5 days. The adhesive that can shorten the aging time has a trade-off relationship that the pot life is short and the handling becomes difficult.
特に、２液混合型の接着剤は、接着性、耐久性、各種プラスチック、金属箔等への適応範囲の広さ（汎用性）、エージング時間等から１液型よりも有利であるが、ポットライフが短く、主剤、硬化剤、溶剤の調合後、数時間でゲル化が発生するなど、生産中に硬化、ゲル化が進み、生産ができなくなったり、アイドリング中に同様な症状が発生し、使いづらいという問題がある。 In particular, the two-component mixed adhesive is more advantageous than the one-component type in terms of adhesion, durability, wide range of application to various plastics, metal foils, etc. (general versatility), aging time, etc. Life is short, gelation occurs in several hours after compounding the main agent, curing agent, solvent, etc., hardening and gelation progress during production, production can not be done, similar symptoms occur during idling, There is a problem that it is difficult to use.
耐久性、汎用性、エージング時間で有利な２液混合型の接着剤を、使用直前に混合して使用することが提案されている（特許文献１）。しかしながら、使用直前に混合して使用すればよいことが提案されているのみで、具体的にどのような装置であればポットライフの短い２液混合型の接着剤を使用できるかについては記載されておらず、実現に至っていない。 It has been proposed that a two-component mixed adhesive that is advantageous in terms of durability, versatility, and aging time is mixed and used immediately before use (Patent Document 1). However, it has only been proposed that it should be mixed immediately before use, and specifically describes what kind of equipment can use a two-component mixed adhesive with a short pot life. It has not been realized.
本発明は、上記問題を解決するためになされたものであり、その目的とするところは、ポットライフの短い接着剤を、塗工不良（ゲル化、版詰まり）を起こさずに塗工することができる塗工装置及び塗工方法を提供することにある。 The present invention has been made to solve the above-mentioned problems, and its object is to apply an adhesive having a short pot life without causing poor coating (gelation, plate clogging). It is in providing the coating apparatus and coating method which can be performed.
上記の課題を解決するために、請求項１に記載の発明は、主剤、溶剤、硬化剤を混合して使用する２液混合型接着剤を塗布部で塗工する塗工装置であって、
前記主剤、前記溶剤、前記硬化剤を混合する混合部を備え、
前記混合部は、前記塗布部の手前に近接して連結していることを特徴とする塗工装置としたものである。
In order to solve the above-mentioned problem, the invention described in claim 1 is a coating apparatus that coats a two-component mixed adhesive that is used by mixing a main agent, a solvent, and a curing agent at an application part,
A mixing unit for mixing the main agent, the solvent, and the curing agent;
The mixing unit is a coating apparatus characterized by being connected in close proximity to the front of the application unit.
請求項２に記載の発明は、主剤、溶剤、硬化剤を混合して使用する２液混合型接着剤を塗布部で塗工する塗工装置であって、
第１混合部で前記主剤と前記溶剤の混合液を生成し、
第２混合部で前記硬化剤と前記混合液を混合し、
前記第２混合部は、前記塗布部の手前に近接して連結していることを特徴とする塗工装置としたものである。
The invention according to claim 2 is a coating apparatus for coating a two-component mixed adhesive that is used by mixing a main agent, a solvent, and a curing agent at an application part,
Producing a mixture of the main agent and the solvent in the first mixing section;
Mixing the curing agent and the mixed solution in a second mixing unit;
The second mixing unit is a coating apparatus characterized in that it is connected in proximity to the front of the application unit.
請求項３に記載の発明は、前記塗布部はダイコーター方式であることを特徴とする請求項１、または２に記載の塗工装置としたものである。 A third aspect of the present invention is the coating apparatus according to the first or second aspect, wherein the coating portion is a die coater type.
請求項４に記載の発明は、前記ダイコーターと、コーティングロールと、前記ダイコーターから吐出した塗液と、ハウジング部によって囲まれる空間を減圧する機能を備えることを特徴とする請求項１〜３のいずれか一項に記載の塗工装置としたものである。 The invention described in claim 4 has a function of decompressing the space surrounded by the die coater, the coating roll, the coating liquid discharged from the die coater, and the housing part. It is set as the coating apparatus as described in any one of these.
請求項５に記載の発明は、請求項１〜４のいずれか一項に記載の塗工装置を用いることを特徴とする塗工方法としたものである。 The invention according to claim 5 is a coating method characterized by using the coating apparatus according to any one of claims 1 to 4.
本発明の塗工装置及び塗工方法によれば、接着剤をあらかじめ混合するのではなく、塗工直前に主剤、溶剤、硬化剤を混合するので、ポットライフの短い接着剤でもゲル化等することなく塗工できる。また、好ましくは塗布部にダイコーターを適用するので、接着剤
の流れが一方向となり、長時間循環による増粘やゲル化による塗工不良が発生しなくなる。
According to the coating apparatus and the coating method of the present invention, the main agent, the solvent, and the curing agent are mixed immediately before coating rather than mixing the adhesive in advance, so that even an adhesive having a short pot life is gelled. Can be applied without any problems. In addition, since a die coater is preferably applied to the application portion, the flow of the adhesive is unidirectional, and no thickening due to circulation for a long time or coating failure due to gelation does not occur.
以下、本発明の実施形態に係る塗工装置及び塗工方法について図面を用いて説明する。同一の構成要素については便宜上の理由がない限り同一の符号を付け、重複する説明は省略する。各図面において、見易さのため構成要素の厚さや比率は誇張されていることがある。また、本発明の趣旨を逸脱しない範囲で、以下の実施形態に限定されるものではない。 Hereinafter, a coating apparatus and a coating method according to an embodiment of the present invention will be described with reference to the drawings. The same components are denoted by the same reference numerals unless there is a reason for the sake of convenience, and redundant description is omitted. In the drawings, the thicknesses and ratios of the constituent elements may be exaggerated for easy viewing. Moreover, it is not limited to the following embodiment in the range which does not deviate from the meaning of this invention.
図１（ａ）は、本発明に係る、第１実施形態の塗工装置１００の主要部の構成を例示する模式図であり、後述の減圧用チャンバー９を備える形態を示している。このように、第１実施形態の塗工装置１００は、少なくとも主剤用タンク１、溶剤用タンク２、硬化剤用タンク３、混合部４、塗布部５、送液用ポンプ６、液移動のためのチューブ７、弁８を主要な構成要素としている。 FIG. 1A is a schematic view illustrating the configuration of the main part of the coating apparatus 100 according to the first embodiment of the present invention, and shows a form including a decompression chamber 9 described later. As described above, the coating apparatus 100 according to the first embodiment includes at least the main agent tank 1, the solvent tank 2, the curing agent tank 3, the mixing unit 4, the application unit 5, the liquid feeding pump 6, and the liquid movement. The tube 7 and the valve 8 are the main components.
第１実施形態の塗工装置１００は、２液混合型接着剤の主剤、溶剤、硬化剤を混合部４で混合し、混合した塗布液を塗布部５でフィルム１６に塗工する。混合部４は、塗布部５の手前に近接して連結している。このように、第１実施形態の塗工装置１００では、接着剤をあらかじめ混合するのではなく、塗工直前に主剤、溶剤、硬化剤を混合するので、ポットライフの短い接着剤でもゲル化等することなく塗工できる。 The coating apparatus 100 of 1st Embodiment mixes the main ingredient, solvent, and hardening | curing agent of a 2 liquid mixing type adhesive in the mixing part 4, and applies the mixed coating liquid to the film 16 in the application part 5. FIG. The mixing unit 4 is connected close to the front of the application unit 5. Thus, in the coating apparatus 100 according to the first embodiment, the adhesive is not mixed in advance, but the main agent, solvent, and curing agent are mixed immediately before coating. Can be applied without doing.
混合部４はミキサーであり、駆動部とシャフトを備える、いわゆるダイナミックミキサーであってもよく、駆動部を備えず、管内部の構造により液体を分割、転換、反転させることで混合する、いわゆるスタティックミキサーであってもよい。 The mixing unit 4 is a mixer, and may be a so-called dynamic mixer including a driving unit and a shaft. The mixing unit 4 does not include a driving unit and mixes by dividing, converting, and inverting the liquid according to the structure inside the tube. It may be a mixer.
塗布部５はダイコーター方式であることが好ましい。主剤、溶剤、硬化剤は、あらかじめ送液用ポンプ６により所定の流量で供給され、混合部４で混合された後、ダイコーターのスリット型吐出口からコーティングロール１５の幅方向（紙面に垂直方向）に均一な流量で塗布される。このため、ダイコーター方式は塗工膜厚の制御性、再現性が良く、塗布液の残液も生じず省ロス化が図れる。 The coating unit 5 is preferably a die coater system. The main agent, solvent, and curing agent are supplied in advance at a predetermined flow rate by the liquid feeding pump 6, mixed in the mixing unit 4, and then from the slit-type discharge port of the die coater to the width direction of the coating roll 15 (perpendicular to the paper surface). ) At a uniform flow rate. For this reason, the die coater method has good controllability and reproducibility of the coating film thickness, and no coating liquid residue is generated, thereby reducing the loss.
さらにダイコーター方式を適用することで、接着剤の流れが一方向となり、長時間循環による増粘やゲル化による塗工不良が発生しなくなる。また、塗布液の滞留部や蒸発部がないため、塗布液の性状安定性の面からも優れている。 Furthermore, by applying the die coater method, the flow of the adhesive is unidirectional, and thickening due to long-term circulation and coating failure due to gelation do not occur. In addition, since there is no staying part or evaporation part of the coating liquid, it is also excellent in terms of property stability of the coating liquid.
塗布部５であるダイコーターと、コーティングロール１５と、ダイコーターから吐出した塗液と、ハウジング部１０によって囲まれる空間は、減圧用ポンプ（図示せず）と接続し、図１のように、減圧可能な機能を備える減圧用チャンバー９となっていることが好ましい。減圧用チャンバーではない場合、特に薄い膜厚で塗工する時には、ダイコーターの吐出口を膜厚と同じ距離までフィルム１６に近づける必要があり、フィルム１６やコーティングロール１５の振れ（変動）との干渉が発生し、事実上塗工は困難となる可能性がある。 The space surrounded by the die coater that is the coating unit 5, the coating roll 15, the coating liquid discharged from the die coater, and the housing unit 10 is connected to a vacuum pump (not shown), as shown in FIG. It is preferable that the pressure reducing chamber 9 has a function capable of reducing pressure. When it is not a vacuum chamber, it is necessary to bring the discharge port of the die coater close to the film 16 to the same distance as the film thickness, especially when coating with a thin film thickness. Interference can occur and coating can be difficult in practice.
一方、ダイコーターの吐出口とフィルム１６との距離を塗工膜厚の数倍程度に広げると、図１（ｂ）のように、吐出口とフィルム１６との間の液溜り１１が大きくなるとともに、フィルム１６の上昇に伴う空気の流れにより液溜り１１下部の圧力が上昇する。そこで、前記空間を減圧用チャンバー９とすることで、液溜り１１の形状を制御することができ、ダイコーターとフィルム１６との距離が塗工膜厚の１０倍程度であっても、薄い膜厚を塗工することが可能となる。 On the other hand, when the distance between the discharge port of the die coater and the film 16 is increased to about several times the coating film thickness, the liquid pool 11 between the discharge port and the film 16 increases as shown in FIG. At the same time, the pressure of the lower portion of the liquid reservoir 11 increases due to the air flow accompanying the rising of the film 16. Therefore, by setting the space as the decompression chamber 9, the shape of the liquid reservoir 11 can be controlled, and even if the distance between the die coater and the film 16 is about 10 times the coating film thickness, Thickness can be applied.
送液用ポンプは、脈動のない、精密に液体を輸送できるポンプが好ましい。精密ギアポンプ、ベーンポンプ、ねじポンプ他、塗布量の精度に応じたポンプを用いる。ダイヤフラムポンプなど脈動が発生するポンプは好ましくないが、塗工に影響しないよう脈動を抑える方策を取れば使用できる。ポンプは吐出量計と連動し、塗工に必要な分だけ混合される。ポンプのそれぞれの吐出量は制御され、それぞれ常に所定の一定の比率で供給される。生産ラインが停止した場合は、自動的に供給も停止するよう制御される。 The pump for feeding liquid is preferably a pump that can transport liquid precisely without pulsation. Use precision gear pumps, vane pumps, screw pumps, and other pumps according to the accuracy of the coating amount. Pumps that generate pulsations, such as diaphragm pumps, are not preferred, but can be used if measures are taken to suppress pulsations so as not to affect the coating. The pump is linked with the discharge meter, and only the amount necessary for coating is mixed. Each discharge amount of the pump is controlled and is always supplied at a predetermined constant ratio. When the production line stops, the supply is automatically controlled to stop.
弁８は、装置停止時に開閉切換可能であり、生産終了時などの装置停止時に溶剤２の経路のみ開き洗浄を行うなど、必要に応じ、必要な経路の弁が開閉可能であるようにする。 The valve 8 can be switched between open and closed when the apparatus is stopped, and only the path of the solvent 2 is opened and cleaned when the apparatus is stopped such as at the end of production.
図２は、本発明に係る、第２実施形態の塗工装置の主要部の構成を例示する模式図であり、減圧用チャンバー９を備える形態を示している。第２実施形態の塗工装置２００は、第１混合部４−１と第２混合部４−２を備え、第１混合部４−１では主剤と溶剤との混合液を生成し、第２混合部４−２では、硬化剤と前記混合液とを混合する。従って、第２実施形態の塗工装置２００は主剤と溶剤の混合液（符号：１＋２）用タンクとその送液用ポンプを備える。弁は、第１混合部４−１の手前と第２混合部４−２の手前に２箇所ずつ（符号：８−１、８−２）備える。弁８−１、８−２の機能は、第１実施形態の塗工装置１００と同様である。 FIG. 2 is a schematic view illustrating the configuration of the main part of the coating apparatus according to the second embodiment of the present invention, and shows a mode including a decompression chamber 9. The coating apparatus 200 according to the second embodiment includes a first mixing unit 4-1 and a second mixing unit 4-2, and the first mixing unit 4-1 generates a mixed liquid of the main agent and the solvent. In the mixing part 4-2, a hardening | curing agent and the said liquid mixture are mixed. Accordingly, the coating apparatus 200 of the second embodiment includes a tank for a mixed liquid (reference numeral: 1 + 2) of a main agent and a solvent and a pump for feeding the liquid. The valve is provided in two places (reference numerals: 8-1 and 8-2) in front of the first mixing unit 4-1 and in front of the second mixing unit 4-2. The functions of the valves 8-1 and 8-2 are the same as those of the coating apparatus 100 of the first embodiment.
接着剤としては、ウレタン系接着剤、アクリル系接着剤、オレフィン系接着剤、エポキシ系接着剤等の２液混合型接着剤に本発明の効果が発揮される。特に反応速度が速い（オープンタイムが短い）場合に本発明の塗工装置及び塗工方法は最適である。また、シアノアクリレート系のように１液であるが、反応速度が速い接着剤に対しては、塗布まで密封される本発明の塗工装置及び塗工方法の適用は有効である。 As the adhesive, the effects of the present invention are exerted on two-component mixed adhesives such as urethane adhesives, acrylic adhesives, olefin adhesives, and epoxy adhesives. In particular, when the reaction rate is fast (the open time is short), the coating apparatus and the coating method of the present invention are optimal. Also, for an adhesive having a single reaction, such as a cyanoacrylate, but having a fast reaction rate, it is effective to apply the coating apparatus and the coating method of the present invention that are sealed until coating.
本発明の塗工方法は、本発明の塗工装置１００または２００を用いる塗工方法である。従って、塗工直前に主剤、溶剤、硬化剤、もしくは主剤と溶剤の混合液、硬化剤を混合する塗工方法である。 The coating method of the present invention is a coating method using the coating apparatus 100 or 200 of the present invention. Therefore, it is a coating method in which a main agent, a solvent, a curing agent, or a mixed solution of a main agent and a solvent, and a curing agent are mixed immediately before coating.
１・・・主剤、またはそのタンク
２・・・溶剤、またはそのタンク
１＋２・・・主剤と溶剤の混合液、またはそのタンク
３・・・硬化剤、またはそのタンク
４、４−１、４−２・・・混合部
５・・・塗布部（好ましくはダイコーター）
６、６−１、６−２・・・送液用ポンプ
７・・・チューブ
８、８−１、８−２・・・弁
９・・・減圧用チャンバー
１０・・・ハウジング部（減圧用）
１１・・・液溜り
１５・・・コーティングロール
１６・・・フィルム
１７・・・接着剤が塗布されたフィルム
１００、２００・・・本発明の塗工装置
DESCRIPTION OF SYMBOLS 1 ... Main agent or its tank 2 ... Solvent, or its tank 1 + 2 ... Mixed liquid of the main agent and a solvent, or its tank 3 ... Hardener, or its tank 4, 4-1, 4- 2 ... mixing part 5 ... application part (preferably die coater)
6, 6-1, 6-2 ... pump for liquid feeding 7 ... tube 8, 8-1, 8-2 ... valve 9 ... chamber for pressure reduction 10 ... housing part (for pressure reduction) )
DESCRIPTION OF SYMBOLS 11 ... Liquid pool 15 ... Coating roll 16 ... Film 17 ... Film 100, 200 with which the adhesive agent was apply | coated ... Coating apparatus of this invention
Claims (5)
前記主剤、前記溶剤、前記硬化剤を混合する混合部を備え、
前記混合部は、前記塗布部の手前に近接して連結していることを特徴とする塗工装置。 A coating device that coats a two-component mixed adhesive that is used by mixing a main agent, a solvent, and a curing agent at an application part,
A mixing unit for mixing the main agent, the solvent, and the curing agent;
The said mixing part is connected in proximity to the front of the said application part, The coating device characterized by the above-mentioned.
第１混合部で前記主剤と前記溶剤の混合液を生成し、
第２混合部で前記硬化剤と前記混合液を混合し、
前記第２混合部は、前記塗布部の手前に近接して連結していることを特徴とする塗工装置。 A coating device that coats a two-component mixed adhesive that is used by mixing a main agent, a solvent, and a curing agent at an application part,
Producing a mixture of the main agent and the solvent in the first mixing section;
Mixing the curing agent and the mixed solution in a second mixing unit;
The coating device according to claim 2, wherein the second mixing unit is connected in proximity to the front of the coating unit.
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