WO1989004727A1 - Method and apparatus for preventing coating of nozzle - Google Patents

Method and apparatus for preventing coating of nozzle Download PDF

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Publication number
WO1989004727A1
WO1989004727A1 PCT/JP1988/001156 JP8801156W WO8904727A1 WO 1989004727 A1 WO1989004727 A1 WO 1989004727A1 JP 8801156 W JP8801156 W JP 8801156W WO 8904727 A1 WO8904727 A1 WO 8904727A1
Authority
WO
WIPO (PCT)
Prior art keywords
solvent
nozzle
compressed gas
adhesive
supply
Prior art date
Application number
PCT/JP1988/001156
Other languages
French (fr)
Japanese (ja)
Inventor
Masafumi Matsunaga
Akira Tomihara
Ukyo Tamura
Original Assignee
Nordson Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP62288626A external-priority patent/JPH08219B2/en
Priority claimed from JP63000848A external-priority patent/JP2673432B2/en
Priority claimed from JP63002298A external-priority patent/JP2626984B2/en
Application filed by Nordson Corporation filed Critical Nordson Corporation
Publication of WO1989004727A1 publication Critical patent/WO1989004727A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0012Apparatus for achieving spraying before discharge from the apparatus

Definitions

  • the present invention relates to a method and an apparatus for preventing the occurrence of a skinning phenomenon in the vicinity of nozzles and nozzles or the vicinity thereof when applying an adhesive or a coating agent.
  • the solvent is water, but once it is skinned near a nozzle or the like, it can be washed with water. This made it impossible and required cleaning with an organic solvent with a higher solubility.
  • New paper In particular, if the above emulsion adhesive is liable to be skinned and progresses and the nozzle is completely solidified and cannot be applied, it can be detected in the post-process. However, in the case of imperfect conditions, the amount of coating varies, but their detection is difficult and
  • Preventing the generation of skin on the upper sloping surface enables continuous operation for a long period of time without monitoring during operation and without washing, improving efficiency and reducing costs. It can greatly contribute to mitigation.
  • One of the objects of the present invention is to apply an emulsion adhesive unattended under the same conditions at all times without solidifying the nozzle or the like.
  • the present invention relates to a two-fluid spraying method of a liquid adhesive or a coating agent, in which a solvent is introduced into a circuit of a compressed gas, and the solvent is refined or atomized by the compressed gas having a pressure Z 0.
  • solvent could be present in or near the air nozzle built into or attached to the adhesive or coating spray gun.
  • the present invention provides a sprayer in a supply circuit for a compressed gas, that is, spray air or pattern air in a two-fluid spray nozzle.
  • the aerosol which is the same or similar to the solvent contained in the emulsion adhesive, etc., is introduced and mixed, and the spraying action by them causes the area around the nozzle to be moistened with the solvent, and
  • the present invention provides a method and an apparatus characterized by washing and preventing the emulsion adhesive from skinning.
  • FIG. 1 is an explanatory view of a basic system in a two-fluid spray
  • FIG. 2 is an explanatory view of a state in which a solvent tube is provided downstream of an opening / closing valve on a compressed air pipe in a two-fluid spray according to the present invention
  • FIG. H is an explanatory view of a state in which a solvent tube is provided downstream of an opening / closing valve on a compressed air pipe in a two-fluid spray according to the present invention
  • Fig. 4 is an explanatory diagram when the solvent tube is solvent pumped
  • Fig. 5 is the terminal of the solvent tube.
  • Fig. 6 is an explanatory diagram of the piping in the same case as above
  • Fig. 7 is an explanatory diagram when applied to the slot nozzle of the present invention
  • Fig. 8 Figures A to 8D show the adhesive and compression
  • FIG. 9 is a state diagram of a residue generated in the conventional two-fluid spray lay Bruno on nozzle.
  • FIG. 10 is an explanatory view of a first method which is a specific invention of the present invention
  • FIGS. 11 and 12 are explanatory views of the operation by the above method
  • FIG. 13 is a liquid and a compressed gas in the above method. Time and the time when the air
  • FIG. 14 is a time graph of six patterns with a timing of 20 and Fig. 14 is an airless spray nozzle according to the second method of the present invention and an extrusion nozzle according to the second method.
  • FIG. 15 is a sectional side view of the same invention when applied to a ball-type transfer nozzle.
  • FIG. 16 is a side sectional view of the same when the invention is applied to a slit nozzle.
  • Fig. 17zs is a sectional side view when applied to the same slot nozzle, and Fig. 18 is the basic timing of jetting of aerosols of a solvent with respect to jetting of liquid and compressed gas by the method of the present invention.
  • Fig. 19 shows the device of the present invention.
  • Fig. 20 shows various patterns based on the basic pattern shown in Fig. 18 above.
  • Fig. 21 shows the method of the present invention applied to airless spray nozzles or exhaust nozzles.
  • Fig. 22 is a side sectional view of the case where the present invention is applied to a ball type transfer nozzle, and
  • Fig. 23 is a side sectional view of the case where the method of the present invention is applied to a slit nozzle.
  • FIG. 24 is a side sectional view when the same is applied to a slot nozzle.
  • the emulsion adhesive (6) is pressurized from the pressurized tank (5) by the air pressure of the desired compressed air, and guided to the spray gun (1) by the hose (7).
  • the emulsion adhesive is discharged from the needle (8-A) and the sheet (8-B) to the outside by the operation of the gun (1).
  • the operation of the gun (1) is performed by compressed air.
  • the three-way valve type solenoid valve (2) is opened, the pre-adjusted air passes through the hose (3) and lifts the piston (4).
  • the piston (4) and the needle (8-A) are connected, and the emulsion adhesive is automatically discharged.
  • the emulsion adhesive is puttered according to the characteristics of the air nozzle (9). Into atomized or atomized particles (21).
  • the nozzle orifice and its surroundings are used.
  • the residue of the ejected liquid (see reference numeral 26 in Fig. 9) dries and the adhesive liquid is wrapped in thin skin, that is, a so-called skinning phenomenon occurs.
  • a solvent contained in a container (16) as shown in FIG. 4 is placed inside an atomizing air hose (10) leading to a gun (1).
  • compressed air for granulation or atomization is mainly discharged intermittently in response to the opening and closing of emulsion adhesive from the standpoint of energy saving.
  • the solvent can be supplied by applying the solvent (14) to the pressurized tank (16) and pressurizing the solenoid valve as shown in Fig. 4 even in the case of the siphon effect formula as shown in Fig. 3. Either method that opens and closes with (17) etc. may be used.
  • the solvent be independently guided to a circuit built in or attached to the spray gun of the adhesive or the coating agent or to the vicinity of the nozzle. This is particularly suitable for forming small and small coating patterns with high-speed intermittent sprays.
  • the solvent should be extremely small, and the particles can be fine or saturated and the relative humidity can be reduced to 99% for aqueous systems. It is okay to just do more
  • the briquetting process requires a high speed and a small coating amount to maintain a constant coating amount, which was previously impossible as described above. It is most suitable for application of regions.
  • Non-contact discharge method such as airless spray method, slit nozzle discharge method, and extension nozzle discharge method, or contact type application method such as slot nozzle and ball pen method
  • the solvent may be introduced into the circuit of the compressed gas.
  • the method of using the compressed gas in a supplementary manner as described above is generally referred to as an air-mix spray, an airless air-spray, or the like. This method is used in the industry to reduce or eliminate droplets that are difficult to atomize, called tils (25), that occur at both ends of the spray pattern zo (24) during air spraying, as shown in Fig. 9. It is used.
  • the gun mechanism of the slot nozzle is omitted because it is generally the same as that of the air spray gun and airless spray gun.
  • the needle or ball (26) rises, and the emul- sion adhesive pressurized by the pump travels through the narrow slit groove (29).
  • a thin coating film (30) is formed on the surface (31).
  • the emulsion adhesive is used for the slot nozzle.
  • the timing for ejecting the solvent is preferably the timing shown in FIG. 8A in all cases.
  • the timing shown in FIG. 8B, 8C, and 8D may be used. Results have been obtained
  • This method is to introduce and supply the aerosol (S a) of the solvent (S) into the supply circuit (8) of the compressed air (CA) in the conventional two-fluid spray method. That is, on the supply circuit (8) of compressed air (CA) which is spray air, and on the gun (1) body
  • the supply port (18) for introducing the aerosol (S a) of the solvent (S) should be installed as close as possible to (2). If it passes through a complicated circuit for a desirable reason in the vicinity, fine particles of the solvent in the aerosol are agglomerated into droplets, which are sprayed to dilute the coating film surface 5 and roughen the film surface Because it will be.
  • compressed air (CA s) containing fine particles of the solvent is ejected from the ejection port (4M) at the end of the ejection passage (4), and as shown in FIG.
  • the fine particles of the solvent strike the periphery of the opening (5M) of the ejection hole (5) of the agent (L), and wet the same, that is, form a thin film of solvent in the 10th part.
  • the residue (Z) of the ejected emulsion adhesive is diluted to eliminate the adhesion.
  • the adhesive or coating agent to be used is preferably a solvent-type or emulsion-type adhesive.
  • the solvent for the emulsion-type adhesive was ice or water.
  • the consumption of the solvent used in the present invention is very small, It has been proven that an adhesive or coating weight ratio of 2% or less is sufficient.
  • a short time (a, b) plus or more time before and after the discharge time, the compressed gas (CA) and the solvent fume ( S a) is a pattern that is jetted simultaneously and at the same time.
  • Fig. 14 shows an example applied to one-fluid spray, that is, airless spray.
  • the solvent aerosol (S a) or a mixture of the aerosol (S a) and the compressed gas (CA) is placed at the appropriate position on the outer circumference of the airless spray nozzle (68).
  • the gas from the provided gas outlet (76 M) toward the tip of the nozzle and activating the pattern air the above-mentioned tile (T) can be eliminated.
  • the fine particles of the above-mentioned aerosol adhere to the vicinity of the nozzles, coagulate and liquefy, forming a liquid film, preventing adhesion of the residue of the ejected liquid, dissolving, and causing skinning. Prevent it.
  • the method of the present invention for the airless spray described above may be further developed and applied to an extrusion nozzle. Since the airless nozzle and the extrusion nozzle are basically the same, please refer to FIG. 14 as described above. That is, the emulsion adhesive (L) is discharged from the nozzle (68), and the aerosol (Sa) or a mixture thereof with the compressed gas (CA) is discharged from the vicinity of the nozzle (68). A plurality of jets (68 M) are jetted around the nozzle hole. And around that is the solvent of the aerosol --Agglomerates and adheres in the form of a film, and the residue is dissolved by #, preventing the occurrence of skinning. The spray of the aerosol and the compressed gas is neither spray air nor pattern air, but is dedicated to nozzle cleaning.
  • the present invention is also applied to a slit nozzle.
  • a slit nozzle At the tip of the slit nozzle, two straight lips are provided facing each other, and aerosols are sprayed from the outside of both sides of these lips.
  • the spray may be applied to only one of the ribs.
  • the solvent aerosol (S a) is located only on the rear side with respect to the coating progress direction (F), that is, on the rear side (97) of the slit lip.
  • the contained compressed air (CAs) may be blown.
  • a slot nozzle is similar to the above-mentioned slit nozzle, and the present invention is similarly applied to this. As shown in Fig. 17, the tip of the slot nozzle is located on the front side of the lip (106), that is, on the object (P) surface of the lip in the traveling direction. In many cases, it is applied while contacting the surface. This is a so-called contact coating method.
  • the method of the present invention can also be applied to a ball-type transfer nozzle that is the same contact type and extrusion type.
  • the nozzle is a ballpoint pen type nozzle as shown in Fig.15. Rich holding ball (86). By spraying the solvent of the aerosol from the outside around (85) and moistening the periphery of the lip, skinning can be prevented beforehand, and clean transfer can always be performed.
  • the operating air (OA) supplied to the gun (1) and the Piping (36, 46, 8) for the thorn (L), compressed gas (CA), etc. is almost the same as the conventional one.
  • the supply port (18) for the solvent aerosol (Sa) is provided in the supply pipe (8) for the compressed gas (CA). It is.
  • the supply line (18) of the aerosol (S a) it is naturally connected to the aerosol generator.
  • a fume generator is used as the generator.
  • the aerosol generator is also called an aerosol generator, in which a required liquid is placed in a sealed container (12), and gas is passed through the nozzle hole (14) from the lower part of the liquid.
  • gas bubbles (S b) rise and rupture at the liquid level, the air film scatters and becomes fine particles, which are dispersed in the gas, and these fumes are obtained. .
  • a solvent is used as the liquid, so that an aerosol of the solvent can be obtained.
  • a liquid heating type humidity, etc.
  • a spray type bench lily tube type an ultrasonic type, or the like
  • an ultrasonic type or the like
  • the supply port (18) for the solvent aerosol is provided in the compressed gas pipe (8).
  • the supply port (18) is provided with the on-off valve for the compressed gas. It is desirable to provide it downstream of (24). The reason is that if there are obstacles on the path of the aerosol, they may condense and form droplets, as described above.
  • a supply port for the above-mentioned aerosol can be provided in the compressed gas passage (4) in the gun body (2) (51) or in the air gap (53).
  • the apparatus shown in Fig. 14 has a pattern air jet port provided outside the raw end of an airless spray nozzle.
  • the number, location, The direction and size have various forms according to the requirements of the north control, but FIG. 5 shows two basic forms provided on both sides as a basic explanation.
  • the pattern air is a compressed gas (A), which is provided with a supply port (73) for an aerosol (Sa) in a supply pipe (75) for the gas.
  • the other side of the supply port is connected to the aerosol generator (71), the other side of the compressed gas supply pipe is connected to the CA source via a solenoid valve, and the electrical wiring is connected to a controller.
  • the supply device of (L) and the supply device of the operation air for the gun are the same as the conventional one, and the description is omitted.
  • Ekusu Torujo N'no nozzle a used device, instead of the putter N'ea piping, that it provide a plurality in the outer periphery of Ekusu Torujo N'no nozzle ejection port of the mixture of dedicated fume body or a compressed gas Since the principle is the same as that of the above-described second device, the description is omitted.
  • the Z coating film is also diluted more than necessary, causing various obstacles such as rough skin.
  • the introduction of the solvent (S) or its aerosol (S a), that is, the flow of the compressed gas (C A) out of the circuit, can be continuous or intermittent.
  • the solvent (S) or its aerosol (I) power is always discharged from a certain inlet under a relatively low pressure, that is, in a very small amount.
  • Fig. 19 shows the specific method.
  • this figure shows the method of introducing the solvent fumes.
  • the aerosol (Sa) generated from the aerosol generator (21) is branched into two circuits (9, 13), a high-pressure side and a low-pressure side, and an automatic pressure regulating valve (1) is provided on the low-pressure side road. 1) or compress the tip of the circuit via a pressure reducing valve (not shown in the figure)
  • New tear paper It is inserted into the gas (CA) supply circuit (6) to form the low pressure side inlet (8). That is, the aerosol (S a) generated from the aerosol generator is continuously discharged into the compressed gas circuit (6) under the required low pressure.
  • the above-mentioned branched high-pressure side circuit (13) is connected via an automatic pressure regulating valve (14) or a pressure reducing valve (not shown in the figure) and a solenoid valve (15) if necessary.
  • the inlet (16) is inserted into the compressed gas (CA) supply circuit (6).
  • the solenoid valve (15) intermittently releases the aerosol (Sa) into the compressed gas circuit (6).
  • the two high and low pressure inlets (8, 16) are provided in series in the compressed gas supply circuit (6), but the high pressure side is preferably closer to the gun.
  • the supply method of the solvent may be two as shown in FIG.
  • the solvent is on the low pressure side of the aerosol (S a), and shows a state in which a small amount of the solvent flows out continuously, which is the basis of various patterns shown below.
  • the compressed gas (CA) is as in the above ttC "pattern.
  • the solvent aerosol (Sa) forms a relatively short time (c, d) before and after the "closed” point (T,) of the compressed gas (CA), and
  • the above "A" pattern is added as a base and flows out and introduced into compressed gas (C15A).
  • liquid residue firmly adheres to the nozzle due to various characteristics due to the gas spray by both the continuous introduction of the solvent or its fumes in a very small amount and the intermittent short introduction of a small amount. Can be completely removed.
  • the above description has been made for the case of the two-fluid spray, but it also applies to other cases. In other words, it is not basically a two-fluid spray (air spray).
  • the aerosol is sprayed with the aerosol jet (76M).
  • slot nozzle similar to the above-mentioned slit nozzle, and the present invention is similarly applied to this.
  • the slot nozzle is attached to the front side (106) of the rip, that is, the tip (106T) of the lip on the zs side in the traveling direction. In many cases, it is applied while contacting the (P) surface.
  • This is a so-called contact coating method.
  • the contact method includes a ball-type transfer nozzle as shown in Fig. 22.
  • the adhesive or coating agent to be used a solvent-type or emulsion-type adhesive is desired, but in the current experiments, the solvent is water or water, especially for the emulsion-type adhesive. Significant effects have been observed for those containing less than 5% alcoholic solvents in water, or those containing less than 5% additives in water.
  • the consumption of the solvent used in the present invention is small, and experiments have proved that the weight ratio of the adhesive or the coating agent is 2% or less.
  • the two-fluid spray gun nozzle (1) and the associated operating air device and liquid supply device are almost the same as the conventional one, but the following items are added to the compressed gas supply device.
  • the inlets (8, 16) for the fumes (Sa) of two solvents are provided in series in the compressed gas supply pipe (6) and toward the gun (1).
  • the one closer to the gun (1) is the high pressure side inlet (16), and the one farther away is the low pressure side inlet (8).
  • each inlet (8, 16) On the opposite side of each inlet (8, 16), it is drawn out of the pipe (6), connected to the solenoid valves (15, 10), respectively, and connected to the low-pressure pipe ( 9) is further connected to the solvent fume generator (21) via an automatic pressure regulating valve (11) or a pressure reducing valve (not shown in the figure).
  • an aerosol generator is shown as the aerosol generator.
  • the aerosol generator is a device in which a liquid is put in a closed container (17), and a gas outlet (19) connected to a gas inlet pipe (18) is provided below the liquid. .
  • Compressed gas (CA) is supplied from the compressed gas source (25) into the gun (1) through an automatic pressure regulating valve (26), a solenoid valve (27), and the like, and It is the same as the conventional case that it is ejected according to the opening and closing of the solenoid valve (27).
  • CA compressed gas
  • the compressed gas (CA) is ejected but also when the compressed gas is stopped, fine particles of the solvent flow out of the nozzle through the passage of the compressed gas in a very small amount in a very small amount. This is a difference from the above embodiment.
  • the pipe (18) is introduced into the semi-hermetic container (17) of the aerosol generator (21) via (22), and the pipe (18) is below the liquid level of the replenished solvent.
  • the liquid is jetted into the liquid from the outlet (19) at the end of the pipe, and rises in the liquid as bubbles (Sb).
  • the bubbles burst at the liquid level.
  • the liquid that is, the solvent, becomes fine particles and scatters into the gas on the liquid surface, so-called aerosol (S a) is generated.
  • These aerosols (S a) are led to the outside from the discharge pipe (15), and are further divided by two branch pipes (12).
  • One of the branch pipes (9) is reduced to a required pressure lower than the original pressure by the self-operating pressure regulating valve (11) or a pressure reducing valve (not shown in the figure) and supplied to the two-fluid spray nozzle (1).
  • the compressed gas (CA) is led into the pipe (6). That is, the aerosol is constantly and continuously discharged during the work at a relatively low pressure (0.5 or less) (see the solvent-aerosol (I) in Fig. 18).
  • the aerosol (Sa) divided into the other by the branch pipe (12) is kept at the original pressure without passing through an automatic pressure regulating valve (14) or a pressure reducing valve, if necessary.
  • the compressed gas is led into the compressed gas pipe (6) through a solenoid valve (15) under a relatively higher pressure than a continuous one.
  • the high-pressure aerosol is intermittently opened and closed by opening and closing the solenoid valve (15) (see the solvent aerosol ( ⁇ ) in FIG. 18).
  • the aerosols of these solvents merge and form a rosary when the two-fluid spray nozzle gushes, as shown in the composite pattern (dish) of the solvent aerosol in Fig. 18. .
  • the rosary-shaped butter can easily remove hard residues that have adhered to the two-fluid spray nose nozzle under various conditions.
  • the introduction method of the high-pressure and low-pressure solvent fumes was described, but there are several other methods.
  • aerosol generator such as the aerosol generator shown in Fig. 18 in place of the aerosol generator, but instead, a less expensive spray type or bench lily tube type, heating type (humidifying type) Used in vessels, etc.), and ultrasonic type can also be used.

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  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

An atomized solvent-containing gas current is applied around the opening of a nozzle prior to the application of an adhesive or coating agent so as to prevent the nozzle and its vicinity from being coated. The solvent may be mixed in an atomized material generating compressed gas, or used in the form of an independent gas current.

Description

明 細 書  Specification
ノ ズルの皮張り防止方法とその装置  Nozzle skinning prevention method and device
[産業上の利用分野]  [Industrial applications]
本発明は接着剤又はコ一ティ ング剤の塗布において、 ノ ズル及 びノ又はその周辺付近における皮張り現象の発生を未然に防止す る方法及びその装置に係る。  The present invention relates to a method and an apparatus for preventing the occurrence of a skinning phenomenon in the vicinity of nozzles and nozzles or the vicinity thereof when applying an adhesive or a coating agent.
[従来の技術]  [Prior art]
従来より、 常温乾燥型の特に溶媒を含んだ熱可塑性の溶剤型や ェマルジョ ン型のコ ーテ ィ ング剤及び接着剤は幅広く使用されて きた。  Conventionally, room temperature drying-type thermoplastic solvent-type or emulsion-type coating agents and adhesives containing a solvent, in particular, have been widely used.
これらのコ一ティ ング剤ゃ接着剤は、 ホ ッ トメ ル トタイ プ接着 剤と比べアプリケーショ ン時、 一般的に粘度が低く、 溶媒が含ま れている事から最終的に薄膜が得られ、 かつ簡単な装置で作業出 来ること、 更に材料のコス ト低減につながることなどが特徴と し てあげられている。 上記溶媒型ゃェマルジョ ン型のコ ーティ ング 剤及び接着剤 (以下これらを総称してェマルジョ ン接着剤という〉 は、 溶媒が蒸発するとノ ズル開口付近で固化し、 一般にいう皮張 り現象が発生し、 これらの洗浄には多 く の時間を要し、 かねてか らこれらの改善策が望まれていた。 特に酢酸ビニール又はヱチ レ ン酢酸ビニール共重会体のヱマルジヨ ンなどは、 紙に対して強い 接着力を示し、 一般的なホ ッ トメ ル ト接着剤よりの耐熱性にもす ぐれている。 一方その溶媒は水であるが、 一度ノ ズル等付近に皮 張りすると水による洗浄が不可能となり、 溶解力のより高い有機 溶剤による洗浄を必要としたのであった。  These coating agents / adhesives generally have lower viscosities during application than hot melt type adhesives, and ultimately form thin films due to the inclusion of solvents, and It is characterized by the fact that work can be performed with simple equipment and that it can lead to reduced material costs. When the solvent evaporates, the solvent-type emulsion coating agent and adhesive (hereinafter collectively referred to as “emulsion adhesive”) solidifies near the nozzle opening, causing a general skinning phenomenon. However, these cleaning methods require a lot of time, and improvement measures have been desired for some time, especially vinyl acetate or perylene, which is a copolymer of polyethylene and vinyl acetate. It has a strong adhesive strength and is superior in heat resistance to general hot-melt adhesives.On the other hand, the solvent is water, but once it is skinned near a nozzle or the like, it can be washed with water. This made it impossible and required cleaning with an organic solvent with a higher solubility.
又、 一般的に包装分野においてのヱマルジョ ン接着剤塗布には、 エアスプ レイ ガ ン等の安価で簡便な方法が主流であった。 更に最 近自動化が進み、 省力化の要求されるニーズが一段と高ま って来  In general, in the packaging field, inexpensive and simple methods such as air spray guns have been the mainstream for applying maruzion adhesive. In recent years, automation has progressed, and the need for labor saving has further increased.
新た な ¾紙 ており、 特に上記ェマルジョ ン接着剤は、 皮張りが発生し易く、 それが進行して完全にノズルが固化して塗布が不能になつた場合 には、 -後工程で検查することは出来るがそれが不完全な状態の場 合には塗布量は変化するがそれらの検岀は難しく、 品質上重大なNew paper In particular, if the above emulsion adhesive is liable to be skinned and progresses and the nozzle is completely solidified and cannot be applied, it can be detected in the post-process. However, in the case of imperfect conditions, the amount of coating varies, but their detection is difficult and
5 欠点をもたらしそれらの自動化には大きな支障をもたらしてきた のである。 5 They have created drawbacks and have had a major obstacle to their automation.
[解決しょう とする問題点]  [Problem to be solved]
上述のように、 特にエマルジョ ン接着剤などのノズルよりの吐 出における該ノ ズル上に発生する皮張り現象を未然に防止しよう As described above, it is necessary to prevent the skinning phenomenon occurring on the nozzle particularly when the nozzle is ejected from an emulsion adhesive or the like.
! 0 とすることが本発明の動機であつた。 The motivation of the present invention was to make! 0.
上逑の皮張り発生を未然に防止することによって、 運転中監視 することもな く、 また洗浄作業をすることもな く、 長時間連続運 転を行なう ことができ、 効率向上と諸経費の軽減に大いに寄興す ることができるのである。  Preventing the generation of skin on the upper sloping surface enables continuous operation for a long period of time without monitoring during operation and without washing, improving efficiency and reducing costs. It can greatly contribute to mitigation.
1 5 [発明の開示] 1 5 [Disclosure of the Invention]
本発明の百的は、 ノ ズル等の固化をさせる事な く、 常に同一条 件でエマルジョ ン接着剤の塗布作業を無人で行なう ことにある。  One of the objects of the present invention is to apply an emulsion adhesive unattended under the same conditions at all times without solidifying the nozzle or the like.
本発明は、 液祅の接着剤又はコ—ティ ング剤の二流体スプレイ 方法に於いて、 圧縮気体の回路に溶媒を導き、 その溶媒を上記圧 Z 0 縮気体で細粒化又は微粒化せしめ、 その混合体でノ ズル及びその 付近の皮張りを防止する事を特徴とするノズル等の皮張り防止方 法および装置を提供する。  The present invention relates to a two-fluid spraying method of a liquid adhesive or a coating agent, in which a solvent is introduced into a circuit of a compressed gas, and the solvent is refined or atomized by the compressed gas having a pressure Z 0. A method and an apparatus for preventing skinning of a nozzle or the like, characterized in that the mixture prevents skinning of the nozzle and its vicinity.
さらに本究明は、 接着剤又はコ ーティ ング剤のスプレイ ガンに 内蔵又は取付けられたエアノ ズル又はその付近の回路に溶媒が、 In addition, the present study found that solvent could be present in or near the air nozzle built into or attached to the adhesive or coating spray gun.
2 5 独立して導かれている事を特徴とする方法および装置を提供する。 2 5 Provide a method and apparatus characterized by being independently guided.
さらにまた、 本発明は、 二流体スプレイ ノ ズルにおける圧縮気 体即ちスプレイ エア又はパタ一ンエアの供給回路の中に、 スプレ  Still further, the present invention provides a sprayer in a supply circuit for a compressed gas, that is, spray air or pattern air in a two-fluid spray nozzle.
新たな ^紙 ィするエマルジ ョ ン接着剤等の中に含まれている溶媒と同一又は 類似のものより成る煙霧体を導入混合せしめ、 それらによるスス プレイ作用と共に上記ノ ズル周辺を溶媒をもつて潤ほし、 かつ洗 浄し、 上記エマルジ ョ ン接着剤の皮張り発生を未然に防止するこ 5 とを特長とする方法と装置を提供する。 New ^ Paper The aerosol, which is the same or similar to the solvent contained in the emulsion adhesive, etc., is introduced and mixed, and the spraying action by them causes the area around the nozzle to be moistened with the solvent, and The present invention provides a method and an apparatus characterized by washing and preventing the emulsion adhesive from skinning.
[図面の簡単な説明]  [Brief description of drawings]
第 1 図は二流体スプレイ における基本方式の説明図、 第 2図は 本発明による二流体スプレイ における圧縮エア配管上の開閉バル ブの下流に溶媒用チューブを設ける状態說明図、 第 3図は溶媒チ FIG. 1 is an explanatory view of a basic system in a two-fluid spray, FIG. 2 is an explanatory view of a state in which a solvent tube is provided downstream of an opening / closing valve on a compressed air pipe in a two-fluid spray according to the present invention, and FIG. H
, ο ユ ーブをサイ フ ォ ン管とした場合の説明図、 第 4図は同上溶媒チ ュ一ブを溶媒圧送とした場合の説明図、 第 5図は同上溶媒チュー ブの端末をノ ズル近辺に導いた場合の説明図、 第 6図は同上の場 合における配管説明図、 第 7図は本発明のス ロ ッ トノ ズル上に適 用じた場合の説'明図、 第 8 A図ないし第 8 D図は接着剤、 圧縮ェ, ο Explanatory drawing when the tube is a siphon tube, Fig. 4 is an explanatory diagram when the solvent tube is solvent pumped, and Fig. 5 is the terminal of the solvent tube. Fig. 6 is an explanatory diagram of the piping in the same case as above, Fig. 7 is an explanatory diagram when applied to the slot nozzle of the present invention, Fig. 8 Figures A to 8D show the adhesive and compression
1 5 ァ、 溶媒等の吐出タイ ミ ンググラフ、 第 9図は従来の二流体スプ レイ ノ ズル上に発生する残渣の状態説明図. 1 5 §, discharge Thailand Mi Ngugurafu solvent such as FIG. 9 is a state diagram of a residue generated in the conventional two-fluid spray lay Bruno on nozzle.
第 1 0図は本発明の特定発明である第一の方法の説明図、 第 1 1図及び第 1 2図は上記方法による作用説明図、 第 1 3図は上 記方法における液体と圧縮気体と煙霧体らの噴出時機とその時間 FIG. 10 is an explanatory view of a first method which is a specific invention of the present invention, FIGS. 11 and 12 are explanatory views of the operation by the above method, and FIG. 13 is a liquid and a compressed gas in the above method. Time and the time when the air
2 0 のタイ ミ ングの 6種のパター ンのタイ ムグラフ、 第 1 4図は本発 明の第二の方法によるエア レススプレイ ノ ズル及び第二の方法に よ るェ ク ス トルー ジ ョ ンノ ズルの構造側断面図、 第 1 5図は同上 発明をボール式転写ノ ズルに適用した場合の側断面図、 第 1 6図 は同上発明をスリ ッ トノ ズルに適用した場合の側断面図、 第 1 7 z s 図は同上ス ロ ッ ト ノ ズルに適用した場合の側断面図、 第 1 8図は 本発明の方法による液体及び圧縮気体の噴出に対する溶媒の煙霧 体の噴出タイ ミ ングの基本的パター ン、 第 1 9図は本発明の装置 Fig. 14 is a time graph of six patterns with a timing of 20 and Fig. 14 is an airless spray nozzle according to the second method of the present invention and an extrusion nozzle according to the second method. FIG. 15 is a sectional side view of the same invention when applied to a ball-type transfer nozzle. FIG. 16 is a side sectional view of the same when the invention is applied to a slit nozzle. Fig. 17zs is a sectional side view when applied to the same slot nozzle, and Fig. 18 is the basic timing of jetting of aerosols of a solvent with respect to jetting of liquid and compressed gas by the method of the present invention. Fig. 19 shows the device of the present invention.
新たな用紙. の構造説明図、 第 2 0図は上記第 1 8図の基本バタ -ンに基づく 各種パター ン、 第 2 1図ば本発明の方法をエアレススプレイ ノ ズ ル又はェクス トル一ジョ ンノ ズルに適用した場合のこれらノ ズル の側断面図、 第 2 2図はボール式転写ノ ズルに本発明を適用した 場合の側断面図、 第 2 3図は本発明の方法をスリ ッ トノ ズルに適 用した場合の側断面図、 第 2 4図は同じく スロ ッ トノ ズルに適用 した場合の側断面図である。 New paper. Fig. 20 shows various patterns based on the basic pattern shown in Fig. 18 above. Fig. 21 shows the method of the present invention applied to airless spray nozzles or exhaust nozzles. Fig. 22 is a side sectional view of the case where the present invention is applied to a ball type transfer nozzle, and Fig. 23 is a side sectional view of the case where the method of the present invention is applied to a slit nozzle. FIG. 24 is a side sectional view when the same is applied to a slot nozzle.
[図面を参照して従来技術の説明]  [Description of conventional technology with reference to drawings]
先ず従来の基本方式より説明する。 第 1図を参照されたい。 ェ マルジョ ン接着剤 ( 6 ) は、 加圧タ ンク ( 5 ) から所望する圧縮 エアーのエア圧の分だけ加圧され、 ホース ( 7 ) により スプレイ ガン ( 1 ) に導かれる。 ェマルジヨ ン接着剤はガン ( 1 ) の作動 によりニー ドル ( 8 — A ) 、 シー ト ( 8 — B ) から外部に吐出さ れる。 ガン ( 1 ) の作動ば圧縮エア—にて行なわれ、 三方弁タイ プソ レノ ィ ドバルブ ( 2 ) が開く とあらかじめ調整されたエア一 がホース ( 3 ) を通り ピス ト ン ( 4 ) を持ち上げる。 ピス ト ン ( 4 ) とニー ドル ( 8 — A ) は連結されており、 自動的にェマル ジョ ン接着剤が吐出される。 ソ レノ ィ ドバルブ ( 2 ) が閉じると ピス ト ンを持ち上げていたエア一はホース ( 3 ) を通り ソ レノ ィ ドバルブの排気口から逃げ、 スプリ ング ( 2 2 ) により ピス ト ン ( ) 並びにニー ドル ( 8 — A〉 は押しもどされェマルジヨ ン接 着剤は吐出を停止する。  First, the conventional basic method will be described. See FIG. The emulsion adhesive (6) is pressurized from the pressurized tank (5) by the air pressure of the desired compressed air, and guided to the spray gun (1) by the hose (7). The emulsion adhesive is discharged from the needle (8-A) and the sheet (8-B) to the outside by the operation of the gun (1). The operation of the gun (1) is performed by compressed air. When the three-way valve type solenoid valve (2) is opened, the pre-adjusted air passes through the hose (3) and lifts the piston (4). The piston (4) and the needle (8-A) are connected, and the emulsion adhesive is automatically discharged. When the solenoid valve (2) closes, the air that has lifted the piston escapes through the hose (3) through the exhaust port of the solenoid valve, and the spring (22) causes the piston () and knee to escape. The dollar (8-A) is pushed back, and the emulsion adhesive stops discharging.
ェマルジョ ン接着剤の吐出と同時か、 又は、 その前後も含めて、 所望する圧縮エアーをホース ( 1 0 ) を通して流出させると、 ェ アーノ ズル ( 9 ) の特性に応じてェマルジョ ン接着剤はパター ン 化され、 粒化又は霧化された粒子 ( 2 1 ) になる。  When the desired compressed air is discharged through the hose (10) at the same time as or before and after the ejection of the emulsion adhesive, the emulsion adhesive is puttered according to the characteristics of the air nozzle (9). Into atomized or atomized particles (21).
このよう な従来技術においては、 ノ ズルのオ リ フィ スやその周 りに噴出液の残渣 (第 9図符号 2 6参照) が乾燥し接着剤液が薄 い皮で包まれた状態、 すなわちいわゆる皮張り現象が生ずる。 In such conventional technologies, the nozzle orifice and its surroundings are used. In addition, the residue of the ejected liquid (see reference numeral 26 in Fig. 9) dries and the adhesive liquid is wrapped in thin skin, that is, a so-called skinning phenomenon occurs.
[図面を参照して本発明の実施例の説明]  [Description of embodiments of the present invention with reference to the drawings]
本発明の一態様においては、 ガ ン ( 1 ) に通じる霧化エアーホ —ス ( 1 0 ) の内部に、 第 4図の様に容器 ( 1 6 ) にある溶媒 In one embodiment of the present invention, a solvent contained in a container (16) as shown in FIG. 4 is placed inside an atomizing air hose (10) leading to a gun (1).
( 1 ) をチューブ ( 1 3 ) を通して導く事が出来る。 容器が開 放の場合、 第 3図に示すように溶媒 ( 1 4 ) は圧縮空気の流れ(1) can be guided through the tube (13). When the container is open, the solvent (14) flows through the compressed air stream as shown in Fig. 3.
( 1 8 ) でサイ フ ォ ン効果により引き出され ( 1 9 ) 、 微粒子In (18), the particles are extracted by the siphon effect (19), and the fine particles
( 2 0 ) となって圧縮エアーと混合されェマルジ ヨ ンを粒化させ る。 この時、 第 5図においてシー ト ( 8 — B ) 並びにエアノ ズルIt becomes (20) and is mixed with the compressed air to granulate the emulsion. At this time, the sheet (8-B) and air nozzle in Fig. 5
( 9 ) の表面に付着しかけたェマルジ ョ ン粒子は、 溶媒と圧縮ェ ァ一の力で簡単に流される。 この為二—ドル ( 8 — A ) 、 シー トThe emulsion particles attached to the surface of (9) are easily washed away by the force of the solvent and the compression air. For this reason two dollars (8-A), sheet
( 8 - B ) 並びにエアノ ズル ( 9 ) には全く ェマルジヨ ンの残渣 がない為、 皮張りはしない。 Neither (8-B) nor Air Nozzle (9) is skinned because it has no emulsion residue.
ェマルジョ ン接着剤の連続二流体スプレイ に於いては、 この方 法が最も安価で簡単な方法である。  For continuous two-fluid spraying of emulsion adhesives, this is the cheapest and simplest method.
ェマルジョ ンの断続スプレイ においては、 粒化又は霧化用の圧 縮エアーの噴出は省エネルギーの立場からエマルジ ョ ン接着剤の 開閉に応じて断続噴出させるケースが主流である。 この場合第 2 図の圧縮ヱァ一を開閉させるソ レノ ィ ドバルブ等 ( 1 2 ) の下流 に溶媒のチューブ ( 1 3 ) を導く ことが望ま しい。 これは複雑な 回路になれば微粒化した溶媒が凝集して水滴になる事があり、 こ の場合ェマルジョ ン接着剤塗布のある部分が稀釈される事もあり 得るからである。 この場合の溶媒の供給方法は第 3図の樣なサイ フ ォ ン効果式でも第 4図の様に溶媒 ( 1 4 ) を加圧タ ンク ( 1 6 ) に入れ加圧してソ レノ ィ ドバルブ等 ( 1 7 ) で開閉する方式でも いづれでも良い。  In the case of intermittent spraying of emulsions, compressed air for granulation or atomization is mainly discharged intermittently in response to the opening and closing of emulsion adhesive from the standpoint of energy saving. In this case, it is desirable to introduce a solvent tube (13) downstream of a solenoid valve (12) that opens and closes the compression coil shown in Fig. 2. This is because in a complicated circuit, the atomized solvent may aggregate to form water droplets, and in this case, a portion where the emulsion adhesive is applied may be diluted. In this case, the solvent can be supplied by applying the solvent (14) to the pressurized tank (16) and pressurizing the solenoid valve as shown in Fig. 4 even in the case of the siphon effect formula as shown in Fig. 3. Either method that opens and closes with (17) etc. may be used.
たな 効果的には、 接着剤又はコ一ティ ング剤のスプレイガンに内蔵 又は取付けられたヱァノ ズル又はその付近の回路に溶媒が、 独立 して導かれているようにすると良い。 これは特に高速の断続スプ レイ で少量で小さな塗布パターンを形成する時に適する。 shelf Effectively, it is preferable that the solvent be independently guided to a circuit built in or attached to the spray gun of the adhesive or the coating agent or to the vicinity of the nozzle. This is particularly suitable for forming small and small coating patterns with high-speed intermittent sprays.
この場合は、 霧化用圧縮ヱァホース ( 1 0 ) で溶媒が凝集する 心配は全くなく、 溶媒は極少量でよ く、 その粒子は微細かもしく は飽和させて水系の場合相対湿度を 9 9 %以上にするだけでも良 い o  In this case, there is no concern that the solvent will agglomerate in the atomizing compression hose (10), the solvent should be extremely small, and the particles can be fine or saturated and the relative humidity can be reduced to 99% for aqueous systems. It is okay to just do more
この場合アブリケ一シヨ ンは上述のごと く今迄不可能だつた、 高速でしかも少ない塗布量で塗布量を一定に保つ必要がある場合、 たとえば包装分野では高速力一 トニングでの酢酸ビニール系エマ ルジョ ンの塗布等に最適である。  In this case, the briquetting process requires a high speed and a small coating amount to maintain a constant coating amount, which was previously impossible as described above. It is most suitable for application of regions.
エア レススプレイ方法、 ス リ ッ ト ノ ズルの吐出方法、 ェク ス ト ルージ ョ ン吐出方法等非接触式吐出方法、 又はス ロ ッ トノ ズル、 ボ一ルペン方式等の接触式塗布方法の中で圧縮気体を併用する方 法に於いて、 圧縮気体の回路に溶媒を導く ようにしても良い。 こ のよ うに圧縮気体を捕助的に使用する方法は、 エア ミ ッ ク ススプ レイ、 エアレス ' エアスプレイ等と一般的に云はれている。 この 方法は第 9図に示す様にエアスプレイ の際、 スプレイパターン z o ( 2 4 ) の両端に生ずるティル ( 2 5 ) と呼ばれる霧化しに くい 液滴を少なく する、 又はなく する為に業界では使用されている。 しかし、 この方法に於いても、 圧縮エアーを噴出させると言う こ とで空気の流れが生じエアレスノ ズルのォリ フィ スやその周りに 噴出液の残渣 ( 2 6 ) が乾燥しすぐ皮張りする現象が生ずる。 ェ ア レススプレイ は比較的高い液圧 ( 2 0 kgノ cii〜 1 5 0 kg / ) でスプレイ させる為、 少ない皮張りであればスプレイが可能であ るが、 このノズル付近に付着している残渣ゃ皮張り したェマルジ ョ ン接着剤が一緒に噴出されてしまいゴブと呼ばれる異物状態で 塗膜に付着する事からコ ーティ ングに於いては致命的な塗膜欠陥 となる。 本発明によれば、 こ の問題は簡単に解決できる。 次に接 触タイ プの代表的な例としてスロ ッ トノズルによる塗布について 第 7図にて説明する。 Non-contact discharge method such as airless spray method, slit nozzle discharge method, and extension nozzle discharge method, or contact type application method such as slot nozzle and ball pen method In the method in which the compressed gas is used together, the solvent may be introduced into the circuit of the compressed gas. The method of using the compressed gas in a supplementary manner as described above is generally referred to as an air-mix spray, an airless air-spray, or the like. This method is used in the industry to reduce or eliminate droplets that are difficult to atomize, called tils (25), that occur at both ends of the spray pattern zo (24) during air spraying, as shown in Fig. 9. It is used. However, even in this method, the compressed air is blown out, which causes an air flow, and the airless nozzle's orifice and its surroundings (26) dry and immediately become skinned A phenomenon occurs. Airless spray is sprayed with a relatively high fluid pressure (20 kg / cii to 150 kg /), so spraying is possible with a small amount of skin, but it adheres near this nozzle. Residue--skinned emalge The glue is spouted together and adheres to the coating in a foreign state called a gob, which is a fatal coating defect in coating. According to the present invention, this problem can be easily solved. Next, as a typical example of the contact type, application by a slot nozzle will be described with reference to FIG.
ス ロ ッ ト ノ ズルのガンの機構は、 一般的にエアスプレイ ガ ン、 エアレススプレイガンと同様の為省略する。 ガ ンに開の信号が入 るとニー ドル又はボール ( 2 6 ) がもち上り、 ポンプで加圧され たェマルジョ ン接着剤は狭いスリ ッ ト溝 ( 2 9 ) を経て、 走行す るワ ー ク ( 3 1 ) 面上に薄い塗膜 ( 3 0 ) となって形成される。 特に断続塗布に於いてはェマルジ ョ ン接着剤がス ロ ッ ト ノ ズル部 The gun mechanism of the slot nozzle is omitted because it is generally the same as that of the air spray gun and airless spray gun. When the gun receives an open signal, the needle or ball (26) rises, and the emul- sion adhesive pressurized by the pump travels through the narrow slit groove (29). A thin coating film (30) is formed on the surface (31). Especially in the case of intermittent application, the emulsion adhesive is used for the slot nozzle.
( 3 2 ) に付着し、 良好なパター ンを形成するのは難しかった。 本発明はス ロ ッ ト ノ ズル部のェマルジ ョ ン接着剤の付着を防止す る為'、 圧縮エアーをスロ ッ トノ ズルに当て付着防止を行なう事を 検討した。 It was difficult to adhere to (32) and to form a good pattern. In the present invention, in order to prevent the adhesion of the emulsion adhesive to the slot nozzle portion, it was examined to apply compressed air to the slot nozzle to prevent the adhesion.
しかし圧縮エア一は付着したエマルジョ ン接着剤を乾燥させる 事から良好な結果は得られなかった。 そ こで、 本発明を採用する 事により、 簡単にこの問題を解決するこ とができた。  However, good results could not be obtained because the compressed air dried the adhered emulsion adhesive. Thus, by employing the present invention, this problem could be easily solved.
又、 溶剤噴出タィ ミ ングは、 全てにおいて第 8 A図タイ ミ ング 好ましいが、 ヱ ク ス トルージョ ン吐出方法、 エアレススプレイ方 法では第 8 B図、 第 8 C図、 第 8 D図でも良い結果が得られてい る  In addition, the timing for ejecting the solvent is preferably the timing shown in FIG. 8A in all cases. However, in the case of the extrusion discharge method and the airless spray method, the timing shown in FIG. 8B, 8C, and 8D may be used. Results have been obtained
次に第 1 0図を参照して、 二流体スプレイ に本発明を適用した 別の実施例を説明する。 本方法は従来の二流体スプレイ方法にお ける圧縮エア ( C A) の供給回路 ( 8 ) 内に溶媒 ( S ) の煙霧体 ( S a ) を導入供給することである。 即ちスプレイ エアである圧 縮エア ( C A ) の供給回路 ( 8 ) 上で、 かつガン ( 1 ) ボディ ( 2 ) にでき う る限り近い場所に、 溶媒 ( S ) の煙霧体 ( S a ) を導入する供給口 ( 1 8 ) を内設するこ とである。 その近い場所 の望ましい理由ば複雑な回路を通した場合には、 煙霧体中の溶媒 の微粒子が凝集して滴状となり、 それがスプレイ されて塗布膜面 5 を稀釋し、 同膜面を荒すことになるからである。 このようにして 溶媒の微粒子を含んだ圧縮エア ( C A s ) がその噴-出通路 ( 4〉 の末端の噴出口 ( 4 M ) より噴出し、 第 1 1図に示すようにエマ ルジョ ン接着剤 ( L ) の噴出孔 ( 5 ) の開口部 ( 5 M ) の周辺部 に打ち当り、 その溶媒の微粒子が付着し、 同部を湿らす、 即ち同 1 0 部に溶媒の薄膜を形成し、 それによつて第 1 2図に示すように、 噴出するェマルジョ ン接着剤の残渣 ( Z ) を稀釋し、 それらの付 着を排除するものである。 Next, another embodiment in which the present invention is applied to a two-fluid spray will be described with reference to FIG. This method is to introduce and supply the aerosol (S a) of the solvent (S) into the supply circuit (8) of the compressed air (CA) in the conventional two-fluid spray method. That is, on the supply circuit (8) of compressed air (CA) which is spray air, and on the gun (1) body The supply port (18) for introducing the aerosol (S a) of the solvent (S) should be installed as close as possible to (2). If it passes through a complicated circuit for a desirable reason in the vicinity, fine particles of the solvent in the aerosol are agglomerated into droplets, which are sprayed to dilute the coating film surface 5 and roughen the film surface Because it will be. In this way, compressed air (CA s) containing fine particles of the solvent is ejected from the ejection port (4M) at the end of the ejection passage (4), and as shown in FIG. The fine particles of the solvent strike the periphery of the opening (5M) of the ejection hole (5) of the agent (L), and wet the same, that is, form a thin film of solvent in the 10th part. Thus, as shown in Fig. 12, the residue (Z) of the ejected emulsion adhesive is diluted to eliminate the adhesion.
このよう にして、 ェマルジョ 接着剤などの残渣は、 粒子とい えども、 その噴出孔 ( 5 ) の開口部 ( 5 M ) 周辺には付着し得な , s いのである。 従ってこれら残渣が成長して噴出孔 ( 5 ) を狭めた り、 塞いだり、 皮張り ( Z ) したりすることは全く発生し得な く なるのである。 即ち、 常にノ ズルを洗浄し、 奇麗に保つことにな るので、 手入れの必要がなく工数は大幅に削減されるのである。 なほ、 上記の場合の溶媒の消費量は極めて僅少であり、 実験の zo 結果によると、 接着剤などの 2 % (重量比) 以下ですむことが確 認されている。  In this way, residues such as emaljo adhesive, even particles, cannot adhere around the opening (5M) of the orifice (5). Therefore, it is impossible for these residues to grow, narrowing, blocking, or skinning (Z) the vent hole (5). In other words, the nozzles are constantly cleaned and kept clean, so there is no need for maintenance and man-hours are greatly reduced. In addition, the consumption of the solvent in the above case is extremely small, and according to the zo results of the experiment, it has been confirmed that the consumption is less than 2% (weight ratio) of the adhesive etc.
また対象とする接着剤又はコ一ティ ング剤としては溶媒型又は ェマルジョ ン型のものが望ましいが、 特に現段階の実験において はェマルジョ ン型接着剤に対して、 特にその溶媒が氷、 又は水に The adhesive or coating agent to be used is preferably a solvent-type or emulsion-type adhesive.In particular, in the current experiment, the solvent for the emulsion-type adhesive was ice or water. To
Z S 5 %以下のアルコール系溶剤の舍まれたものに対してば、 顕著な 効果が認められている。 A remarkable effect has been observed for those containing alcoholic solvents of ZS 5% or less.
また本発明に使用される溶媒の消費量は僅少であり、 実験によ る と、 接着剤又はコーティ ング剤の重量比 2 %以下で十分である ことが立証されている。 The consumption of the solvent used in the present invention is very small, It has been proven that an adhesive or coating weight ratio of 2% or less is sufficient.
次に本発明による溶媒より成る煙霧体を圧縮気体回路内に導入 即ちそれらの流出時機及びそれらの時間については、 各種のバタ 5 ーンがあり、 それらの代表的な例をあげる。 第 1 3図を参照され たい。  Next, there are various kinds of patterns for introducing the aerosol composed of the solvent according to the present invention into the compressed gas circuit, that is, for their outflow timing and their times, representative examples of which are given below. See FIG.
" A " ノ、'ターン  "A" No, 'turn
ェ マルジ ョ ン接着剤の連続的又は断続的吐出において常にェ マ ルジ ョ ン接着剤 ( L ) と圧縮気体 ( C A ) と、 そして溶媒の煙霧 ,ο 体 ( S a ) 等の開閉がすべて同一歩調をとるものである。  In the continuous or intermittent discharge of emulsion adhesive, the opening and closing of the emulsion adhesive (L), compressed gas (CA), and the fumes of the solvent, o bodies (Sa) etc. are all the same. It takes a step.
" B n パターン "B n pattern
ェマルジョ ン接着剤 ( L ) と圧縮気体 ( C A ) とは同一歩調を とるが、 それらの噴出時間内において溶媒の煙霧体 ( S a ) のみ は、 より短く断続的である。  The emulsion adhesive (L) and the compressed gas (C A) follow the same trajectory, but within their bleeding time, only the solvent aerosol (S a) is shorter and intermittent.
! 5 " C " ノヽ。ター ン ! 5 "C" NO. Turn
断続的開閉によるェマルジ ヨ ン接着剤 ( L ) の吐出において、 該吐出時間の前後に僅少時間 ( a , b ) のプラスされた即ちより 多い時間、 圧縮気体 ( C A) 及び、 溶媒の煙霧体 ( S a ) が同時 機かつ同時間噴出されるパター ンである。 In the discharge of the emulsion adhesive (L) by intermittent opening and closing, a short time (a, b) plus or more time before and after the discharge time, the compressed gas (CA) and the solvent fume ( S a) is a pattern that is jetted simultaneously and at the same time.
0 " D " ノヽ。ターン  0 "D" NO. Turn
断続的開閉によるェマルジヨ ン接着剤 ( L ) の吐出において、 その吐出時間の前後にある時間がプラスされたより多 く の時間圧 . 縮気体 ( C A ) は上記 a C " パター ンにおけるが如く 噴出される が、 溶媒の煙霧体 ( S a ) は、 圧縮気体 ( C A ) の " 閉 " 時点 5 ( T , ) の前後に亘るかつ比較的短い時間 ( c , d〉 、 圧縮気体 ( C A ) 内に流出導入されるものである。 In the ejection of the emulsion adhesive (L) by intermittent opening and closing, more time compressed gas (CA) is added as the time before and after the ejection time is added. The compressed gas (CA) is ejected as in the above a C "pattern. However, the solvent aerosol (S a) remains in the compressed gas (CA) for a relatively short time (c, d>) before and after the "close" time 5 (T,) of the compressed gas (CA). It is outflow-introduced.
" E " ノ、。タ一ン  "E" No. Turn
た な用紙 断続的開閉によるェマルジ ヨ ン接着剤 ( L ) の吐出において、 その吐出の "閉 " 時点 (Tz ) の前後に亘る比較的短い時間( e , f ) 、 圧縮気体 ( C A) と溶媒の煙霧体 ( S a ) とが同一歩調を とり即ち同時機かつ同時間噴出されるものである。 Paper In the discharge of intermittent opening and closing by Emaruji Yo down adhesive (L), the discharge of the "closed" time (T z) of a relatively short time over the back and forth (e, f), compressed gas (CA) and solvent fumes The body (S a) follows the same pace, that is, is a simultaneous aircraft and is ejected at the same time.
K F " ノヾター ン  K F "
断続的開閉によるェマルジヨ ン接着剤 ( L ) の吐出において、 その吐出の "閉 η時点 (Τ3 ) より若干遅れた時間 ( g ) におい て、 圧縮気体 ( C A) と溶媒の煙霧体 ( S a ) とが同一時機及び 同一時間かつ比較的短時間噴出するものである。 In the discharge of Emarujiyo down adhesive according to intermittently open and close (L), the discharge of the "closed η time (T 3) slightly later time than Te (g) odor, compressed gas (CA) and fumes of the solvent (S a ) Erupt at the same time and at the same time and for a relatively short time.
第 1 4図は一流体スプレイ即ちエアレススプレイ に適用した例 である。  Fig. 14 shows an example applied to one-fluid spray, that is, airless spray.
第 1 4図において、 溶媒の煙霧体 ( S a ) 又は同煙霧体(S a ) と圧縮気体 ( C A) との混合体を、 エア レススプレイ ノ ズル(68) の外周上の適切な位置に設けられた気体の噴出口 ( 7 6 M) より、 該ノ ズルの先端部に向けて吹付け、 パター ンエアの作動により、 上述のティ ル ( T ) を解消せしめることができるのである。 それ と同時に、 上述の煙霧体の微粒子は、 上記ノ ズルの周辺付近に付 着、 凝集液化して液膜となり、 噴出する液体の残渣の付着を防ぎ、 溶解し、 皮張りの発生を未然に防止するのである。  In Fig. 14, the solvent aerosol (S a) or a mixture of the aerosol (S a) and the compressed gas (CA) is placed at the appropriate position on the outer circumference of the airless spray nozzle (68). By spraying the gas from the provided gas outlet (76 M) toward the tip of the nozzle and activating the pattern air, the above-mentioned tile (T) can be eliminated. At the same time, the fine particles of the above-mentioned aerosol adhere to the vicinity of the nozzles, coagulate and liquefy, forming a liquid film, preventing adhesion of the residue of the ejected liquid, dissolving, and causing skinning. Prevent it.
上述のエアレススプレイに対する本発明の方法を更に発展させ て, ェクス トルージ ョ ンノ ズルに対して適用しても良い。 エア レ ススプレイ ノ ズルとェク ス トルー ジ ョ ンノ ズルとは基本的には同 一であるので、 上述と同様に第 1 4図を参照されたい。 即ちエマ ルジョ ン接着剤 ( L ) はノ ズル ( 6 8 ) より吐出し、 また煙霧体 ( S a ) 又はそれと圧縮気体 (C A) との混合体が、 上記ノ ズル ( 6 8 ) の周辺より複数本の噴出口 ( 6 8 M) より該ノ ズル孔の 周辺を目がけて噴'出される。 そしてその周辺には煙霧体の溶媒が - - 凝集して膜状となって付着し、 残渣はそォ#によ って溶解し、 皮張 りの発生を未然に防止するのである。 上記煙霧体や圧縮気体の噴 出は、 前記のスプレイ エアでもな く 、 またパター ンエアでもな く 、 ノ ズル洗浄専用のものである。 The method of the present invention for the airless spray described above may be further developed and applied to an extrusion nozzle. Since the airless nozzle and the extrusion nozzle are basically the same, please refer to FIG. 14 as described above. That is, the emulsion adhesive (L) is discharged from the nozzle (68), and the aerosol (Sa) or a mixture thereof with the compressed gas (CA) is discharged from the vicinity of the nozzle (68). A plurality of jets (68 M) are jetted around the nozzle hole. And around that is the solvent of the aerosol --Agglomerates and adheres in the form of a film, and the residue is dissolved by #, preventing the occurrence of skinning. The spray of the aerosol and the compressed gas is neither spray air nor pattern air, but is dedicated to nozzle cleaning.
上述のェク ス トルージョ ンノ ズルは丸型の場合を説明したが、 ス リ ッ ト ノ ズルに対しても適用される。 ス リ ツ ト ノ ズルの先端部 は直線状のリ ップがニ本、 相対して設けられるが、 これらリ ップ の両側外方より煙霧体を吹付けることになる。 ただし実際問題と しては、 第 1 6図に示す如く 、 一方側のリ ッブに対してのみ吹付 けてもよい。 同スリ ッ トノズル ( 9 5 ) においては、 塗布進行方 向 ( F ) に対する後側即ちス リ ッ ト のリ ツプの後側 ( 9 7 ) にの み、 溶媒の煙霧体 ( S a ) の含まれた圧縮エア ( C A s ) を吹き 付ければよい。 理由は同リ ップ ( 9 7 ) 上に残渣の付着している 場合には、 その航跡を塗布膜面上に残すことになるからである。 上記ス リ ッ トノ ズルと類似したものにス ロ ッ ト ノ ズルがあ り 、 これも同様に本発明が適用される。 また同ス ロ ッ トノ ズルの先端 は、 第 1 7図に見られるように、 そのリ ップの前側 ( 1 0 6 ) 即 ち進行方向側のリ ッ プの被塗物 ( P ) 面上に接触せしめつつ塗布 する場合が多い。 いわゆる接触式塗布方法である。  Although the above-mentioned extrude nozzle has been described in the case of a round shape, the present invention is also applied to a slit nozzle. At the tip of the slit nozzle, two straight lips are provided facing each other, and aerosols are sprayed from the outside of both sides of these lips. However, as a practical matter, as shown in FIG. 16, the spray may be applied to only one of the ribs. In the slit nozzle (95), the solvent aerosol (S a) is located only on the rear side with respect to the coating progress direction (F), that is, on the rear side (97) of the slit lip. The contained compressed air (CAs) may be blown. The reason is that if residue is attached on the rip (97), the wake will be left on the coating film surface. A slot nozzle is similar to the above-mentioned slit nozzle, and the present invention is similarly applied to this. As shown in Fig. 17, the tip of the slot nozzle is located on the front side of the lip (106), that is, on the object (P) surface of the lip in the traveling direction. In many cases, it is applied while contacting the surface. This is a so-called contact coating method.
同じ接触式かつェク ス トルージョ ン式であるボール式転写ノ ズ ルに対しても本発明の方法は適用することができる。 同ノ ズルは 第 1 5図に示すように、 ボールペン式の吐出ノ ズルである。 ボ— ル ( 8 6 ) をとめている リ ツフ。 ( 8 5 ) の外周辺を外方より煙霧 体の溶媒を吹付け、 リ ップ周辺を潤ほすこ とにより皮張りを未然 に防止し、 常に綺麗な転写を行なう ことができるのである。  The method of the present invention can also be applied to a ball-type transfer nozzle that is the same contact type and extrusion type. The nozzle is a ballpoint pen type nozzle as shown in Fig.15. Rich holding ball (86). By spraying the solvent of the aerosol from the outside around (85) and moistening the periphery of the lip, skinning can be prevented beforehand, and clean transfer can always be performed.
次に、 第 1 0図に示す装置について説明する。 - ガ ン ( 1 ) に供給される操作エア ( O A ) 及びェマルジ ヨ ン接 着荊 ( L ) 、 圧縮気体 ( C A) 等の配管 ( 3 6、 4 6 、 8 ) は従 来のものとほぼ同様である。 相異点は、 同図にも示されているよ うに、 圧縮気体 ( C A) の供給配管 ( 8 ) 内に溶媒の煙霧体 ( S a ) の供給口 ( 1 8 ) の設けられている ことである。 該煙霧体 ( S a ) の供紿ロ ( 1 8 ) の反対側ば当然煙霧体の発生装置に配 管接続される。 同図にてはその発生装置として煙霧体発生装置 Next, the apparatus shown in FIG. 10 will be described. -The operating air (OA) supplied to the gun (1) and the Piping (36, 46, 8) for the thorn (L), compressed gas (CA), etc. is almost the same as the conventional one. The difference is that, as shown in the figure, the supply port (18) for the solvent aerosol (Sa) is provided in the supply pipe (8) for the compressed gas (CA). It is. On the opposite side of the supply line (18) of the aerosol (S a), it is naturally connected to the aerosol generator. In the same figure, a fume generator is used as the generator.
( 1 1 ) が示されている。 同煙霧体発生装置は、 エアロゾル発生 装置ともいわれており、 密閉された容器 ( 1 2 ) の中に、 ある必 要とする液体を入れ同液体の下部より気体をノ ズル孔 ( 1 4 ) よ り噴出し、 その気泡 ( S b ) が上昇、 液面にて破裂する際に、 そ の気膜が飛散、 微粒子となって気体中に分散し、 それらの煙霧体 が得られるという ものである。  (1 1) is shown. The aerosol generator is also called an aerosol generator, in which a required liquid is placed in a sealed container (12), and gas is passed through the nozzle hole (14) from the lower part of the liquid. When the gas bubbles (S b) rise and rupture at the liquid level, the air film scatters and becomes fine particles, which are dispersed in the gas, and these fumes are obtained. .
本発明にては当然、 その液体として溶媒が用いられるので、 溶 媒の煙霧体が得られる。  In the present invention, of course, a solvent is used as the liquid, so that an aerosol of the solvent can be obtained.
その他、 溶媒の煙霧体を得る装置としては液体の加熱式 (加湿 器など) 又は.スプレイ式ベンチユリ管式、 超音波式などを利用す るこ ともできる。  In addition, as a device for obtaining a solvent aerosol, a liquid heating type (humidifier, etc.), a spray type bench lily tube type, an ultrasonic type, or the like can be used.
上述の説明にては、 溶媒の煙霧体の供給口 ( 1 8 ) を圧縮気体 の配管 ( 8 ) 内に設けたが、 この際.、 該供給口 ( 1 8 ) は圧縮気 体用開閉バルブ ( 2 4 ) の下流側に設けることが望ま しい。 理由 は煙霧体の通路上に障害物があると、 前述したようにそれらが凝 集して液滴化する恐れがあるからである。  In the above description, the supply port (18) for the solvent aerosol is provided in the compressed gas pipe (8). At this time, the supply port (18) is provided with the on-off valve for the compressed gas. It is desirable to provide it downstream of (24). The reason is that if there are obstacles on the path of the aerosol, they may condense and form droplets, as described above.
更に上記煙霧体の供拾口をガンボディ ( 2 ) 内の圧縮気体通路 ( 4 ) 内に ( 5 1 ) 又はエア ヤ ップ^に設ける ( 5 3 ) ことも できる。  Further, a supply port for the above-mentioned aerosol can be provided in the compressed gas passage (4) in the gun body (2) (51) or in the air gap (53).
第 1 4図に示す装置は、 エア レススプレイ ノ ズルの生端外側に、 パターンエアの噴出口を設けたものである。 同噴出口の数、 位置、 方向、 大きさは、 ノ タ ー ンコ ン ト ロ ールの求めに応じ、 種々 の形 態があるが、 第 5図は基本的説明として、 二個、 両側に設けたも のである。 パター ンエアは圧縮気体 (A ) であり、 該気体の供給 配管 ( 7 5 ) の中に、 煙霧体 ( S a ) の供給口 ( 7 3 ) を設けた 5 ものである。 同供給口の反対側は煙霧体発生装置 ( 7 1 ) に、 ま た圧縮気体供給配管の反対側はソ レノ イ ドバルブを介して C A源 に、 及び電気配線はコ ン ト ローラに接続される。 その他、 液体The apparatus shown in Fig. 14 has a pattern air jet port provided outside the raw end of an airless spray nozzle. The number, location, The direction and size have various forms according to the requirements of the north control, but FIG. 5 shows two basic forms provided on both sides as a basic explanation. The pattern air is a compressed gas (A), which is provided with a supply port (73) for an aerosol (Sa) in a supply pipe (75) for the gas. The other side of the supply port is connected to the aerosol generator (71), the other side of the compressed gas supply pipe is connected to the CA source via a solenoid valve, and the electrical wiring is connected to a controller. . Other, liquid
( L ) の供給装置及びガンの操作エアの供給装置は従来のものと 同様につき説明は省略する。 The supply device of (L) and the supply device of the operation air for the gun are the same as the conventional one, and the description is omitted.
1 0 ェクス トルージョ ンノ ズルを使用する装置は、 パター ンエア配 管に代わって、 それが専用の煙霧体又はそれと圧縮気体との混合 体の噴出口をェクス トルージョ ンノ ズルの外周辺に複数個設ける ことであって、 原理的には上述の第二の装置と同様につき説明は 省略する。 1 0 Ekusu Torujo N'no nozzle a used device, instead of the putter N'ea piping, that it provide a plurality in the outer periphery of Ekusu Torujo N'no nozzle ejection port of the mixture of dedicated fume body or a compressed gas Since the principle is the same as that of the above-described second device, the description is omitted.
1 5 上述の例において、 溶媒を圧縮気体の供給回路の中に噴出又は その煙霧体を導入即ち流出する作動は、 ある一定圧の下に連続的 か若し く は、 断続的のものであつた。 連繞的の場合には、 溶媒の 消費量は甚だし く 、 一般には断続的の場合が多かった。 しかし断 続的の場合には液体等の条件又は断続的時間など条件により 、 残 15 In the above example, the act of injecting the solvent into the compressed gas supply circuit or introducing or discharging the aerosol is continuous or intermittent under a certain pressure. Was. In the contiguous case, the consumption of the solvent was enormous, and in general, it was often intermittent. However, in the case of intermittent operation, the remaining
2 0 渣を完全に除去できない場合がある。 20 Sometimes the residue cannot be completely removed.
上述の例においては、 比較的高い圧力 ( 5 kg / crf前後) で、 力、 つ連続的に溶媒又はその煙霧体を圧縮気体の回路の中に導入する ことであり、 それはノ ズル上に付着した残渣の除去には効果はあ るが、 前逑したようにそれらの消費量が増大するばかりではな く .、In the above example, at a relatively high pressure (around 5 kg / c rf), force, and continuously introducing the solvent or its aerosol into the compressed gas circuit, which places it on the nozzle It is effective in removing attached residues, but not only increases their consumption, as in the case of a fog.
Z 塗布膜も必要以上に稀釋されて、 肌荒れなど種々の障害をもたら すこ とになるのである。 The Z coating film is also diluted more than necessary, causing various obstacles such as rough skin.
さり とて、 上記の一定圧をより下げて、 極少量づっ連続的に導  In addition, lower the above-mentioned constant pressure further,
新た な兩紙 入したものでは、 頑固な残渣などは除去できない場合がある。 次に、 溶媒又はその煙霧体を極少量づっ連続的に供耠して、 常 にノ ズル近辺を湿潤妆態におく と共に、 液体の吐出時には、 より 高い圧力をもって、 より多い溶媒又はその煙霧体を短時間供給し て頑固な液体の残渣を除去し、 常に清浄な状態にノ ズルを保持し よう とする方法とその装置について例示する。 New two sheets In some cases, stubborn residues cannot be removed. Next, the solvent or its aerosol is supplied continuously in a very small amount, so that the vicinity of the nozzle is always kept in a wet state. An example of a method and an apparatus for supplying slag for a short time to remove stubborn liquid residues and always keep the nozzle in a clean state will be described.
第 1 8図を参照されたい。 液体 ( L ) の断続的吐出において、 その吐出時間と圧縮気体 ( C A) の噴出するタイ ミ ングには種々 のパターンがあるが、 同図にてはその一例として圧縮気体 (CA2) の噴出時間が液体 ( L ) の吐出時間の前後を若干カバーしたもの を示している。 See FIG. In the intermittent discharge of the liquid (L), there are various patterns in the discharge time and the timing of the ejection of the compressed gas (CA). In the figure, as an example, the ejection of the compressed gas (CA 2 ) is shown. The time slightly covers before and after the liquid (L) discharge time.
さて、 溶媒 ( S) 又ばその煙霧体 ( S a ) の導入即ち圧縮気体 (C A) の回路内に流出する時間には、 連続的のものと断続的な ものとの二種がある。 前者は、 ある導入口より、 溶媒 ( S ) 又は その煙霧体 ( I ) 力 常に比較的低圧の下即ち極少量づっ流出 The introduction of the solvent (S) or its aerosol (S a), that is, the flow of the compressed gas (C A) out of the circuit, can be continuous or intermittent. In the former, the solvent (S) or its aerosol (I) power is always discharged from a certain inlet under a relatively low pressure, that is, in a very small amount.
( I ) されているものである。 そして後者は、 他の導入口より同 種の溶媒又はその煙霧体 ( Π ) が、 より高い圧力の下に、 断続的 に流出 ( Π ) されるものである。 そしてこれらが合体して、 同図 に示すように、 連続と断続との合成された溶媒又はその煙霧体の 導入 (m) が行なわれるのである。 (I) has been done. In the latter case, the same solvent or its aerosol (Π) is intermittently discharged (流出) under higher pressure from another inlet. Then, as shown in the figure, continuous and intermittent synthesis of the solvent or its aerosol is introduced (m) as shown in the figure.
上述の如く、 この方法においては、 溶媒又ばその煙霧体の圧縮 気体 HI路への導入を、 高低圧二種の導入を連繞的及び断続的に合 成して行なう ものである。 その具体的方法を第 1 9図に示す。 な ほ同図は溶媒の煙霧体の導入方式を示している。 煙霧体発生装置 ( 2 1 ) より発生した煙霧体 ( S a ) を、 高圧側と低圧側との二 回路 ( 9、 1 3 ) に分岐し、 その低圧側面路上には自動圧力調整 弁 ( 1 1 ) 又は減圧弁 (図上不示) を介して同回路の先端を圧縮  As described above, in this method, the introduction of the solvent or the aerosol into the compressed gas HI path is performed by continuously and intermittently combining the introduction of two types of high and low pressure. Fig. 19 shows the specific method. In addition, this figure shows the method of introducing the solvent fumes. The aerosol (Sa) generated from the aerosol generator (21) is branched into two circuits (9, 13), a high-pressure side and a low-pressure side, and an automatic pressure regulating valve (1) is provided on the low-pressure side road. 1) or compress the tip of the circuit via a pressure reducing valve (not shown in the figure)
新たな泪紙 気体 ( C A ) の供給回路 ( 6 ) の中に挿入して低圧側導入口( 8 ) とする。 即ち煙霧体発生装置より発生した煙霧体 ( S a ) は、 所 要の低圧の下に連続的に圧縮気体回路 ( 6 ) の中に流出されるの である。 New tear paper It is inserted into the gas (CA) supply circuit (6) to form the low pressure side inlet (8). That is, the aerosol (S a) generated from the aerosol generator is continuously discharged into the compressed gas circuit (6) under the required low pressure.
他方、 上述の分岐した他の高圧側の回路 ( 1 3 ) は必要あれば 自動圧力調整弁 ( 1 4 ) 又は減圧弁 (図上不示) 及びソ レノ ィ ド バルブ ( 1 5 ) を介して上記圧縮気体 ( C A ) の供給回路 ( 6 ) の中に、 その導入口 ( 1 6 ) が挿入される。 そしてソ レノ ィ ドバ ルブ ( 1 5 ) により断続的に煙霧体 ( S a ) が圧縮気体回路 (6) 中に流出されるのである。  On the other hand, the above-mentioned branched high-pressure side circuit (13) is connected via an automatic pressure regulating valve (14) or a pressure reducing valve (not shown in the figure) and a solenoid valve (15) if necessary. The inlet (16) is inserted into the compressed gas (CA) supply circuit (6). The solenoid valve (15) intermittently releases the aerosol (Sa) into the compressed gas circuit (6).
上記 2個の高低圧用の導入口 ( 8 、 1 6 ) は、 圧縮気体供給回 路 ( 6 ) 内にて直列に設けられるが、 高圧側のものはガンに近い 方が望ましい。  The two high and low pressure inlets (8, 16) are provided in series in the compressed gas supply circuit (6), but the high pressure side is preferably closer to the gun.
また上記は煙霧体 ( S a ) の導入について説明したが、 溶媒の 場合も、 それら溶媒の供給方式は第 1 0図に示す一個を二個と し たものとして差支えない。  Although the introduction of the aerosol (S a) has been described above, in the case of a solvent, the supply method of the solvent may be two as shown in FIG.
さて、 上述の如く 、 高圧側の溶媒の煙霧体の導入は断続的とし たが、 その断続的パターンにも種々あるので、 次にこれらの代表 例をあげて説明する。 第 2 0図を参照されたい。  Now, as described above, the introduction of the aerosol of the solvent on the high pressure side is intermittent, but the intermittent pattern is also various. Therefore, the representative examples will be described below. See FIG.
" A " ノヽ。ター ン  "A" No. Turn
本パターンは、 溶媒はその煙霧体 ( S a ) の低圧側のもので、 連続的少量一定量流出する状態を示すものであり、 これは以降示 す各種パター ンのベースとなるものである。  In this pattern, the solvent is on the low pressure side of the aerosol (S a), and shows a state in which a small amount of the solvent flows out continuously, which is the basis of various patterns shown below.
" B " ノヽ。ター ン  "B" No. Turn
ェマルジヨ ン接着剤 ( L ) と圧縮気体 ( C A 2 ) とは同一歩調 をとるが、 それらの噴出時間内において溶媒の煙霧体 ( S a ) の みは、 より短かく 断続的であるものに、 ベースとして上記 " A n Emarujiyo take same gait down adhesive (L) and compressed gas (CA 2) but, Hiroyoshi their fumes of solvent in the jetting time of the (S a), in what is more short intermittent, The above "A n
新た な甩紙 パターンが付加されたものである。 New paper The pattern is added.
K C "ノヽ'ター ン  K C "No 'Turn
断続的開閉によるェマルジヨ ン接着剤 ( L ) の吐出において、 該吐出時間の前後にプラスされた時間 ( a , b ) 即ちより多い時 5 間、 圧縮気体 ( C A) 及び溶媒の煙霧体 ( S a ) が同時かつ同時 間、 噴出されるパターンに、 ベースとして上記 κ A " ノ、 'ターンが 付加されたものである。 In the discharge of the emulsion adhesive (L) by intermittent opening and closing, the time (a, b) added before and after the discharge time, that is, more time, 5 hours, the compressed gas (CA) and the solvent aerosol (S a ) At the same time and at the same time, the above-mentioned κ A “” and “” turn are added as a base to the ejected pattern.
" D " パター ン  "D" pattern
断続的開閉によるェマルジヨ ン接着剤 ( L ) の吐出において、 , ο その吐岀時間の前後にある時間がプラスされたより多く の時 f曰 、 圧縮気体 ( C A) は上記 tt C " パターンにおけるが如く噴出され るが、 溶媒の煙霧体 ( S a ) は、 上記圧縮気体 ( C A) の "閉 '' 時点 (T , ) の前後に亘りかつ比較的短い時間 ( c , d ) と、 そ れにベースとして上記 " A "パターンが付加されて圧縮気体 ( C 1 5 A ) 内に流出導入されるものである。 In the discharge of the emulsion adhesive (L) by intermittent opening and closing,, o The time before and after the discharge time is added more times f, the compressed gas (CA) is as in the above ttC "pattern. Although it is ejected, the solvent aerosol (Sa) forms a relatively short time (c, d) before and after the "closed" point (T,) of the compressed gas (CA), and The above "A" pattern is added as a base and flows out and introduced into compressed gas (C15A).
α E " ノ、。ターン  α E "No, turn
断続的開閉によるェマルジヨ ン接着剤 ( L ) の吐出において、 その吐出の "閉 " 時点 (Τ2 ) の前後に亘る比較的短い時間 ( e , f ) 、 圧縮気体 ( C A) と溶媒の煙霧体 ( S a ) とが同時かつ同 2。 時間噴出されるものに、 ベ一スとして上記 K A " パターンの付加 されたものである。 In the discharge of Emarujiyo down adhesive according to intermittently open and close (L), the discharge of the "closed" time (T 2) of a relatively short time over the back and forth (e, f), compressed gas (CA) and fumes of solvent (S a) and the simultaneous and in the same 2. It is the one with the above K A "pattern added as a base to the one ejected for a time.
F " ノ ターン  F "No Turn
断続的開閉によるェマルジヨ ン接着剤 ( L ) の吐出において、 その吐出の "閉 " 時点 (T3 ) より若干の時間 ( g ) をおいて、 z 圧縮気体 ( C A) と溶媒の煙霧体 ( S a ) とが同一時間かつ比較 的短時間噴出する ものに、 ベースとして上記 " A " パターンの付 加されたものである。 また、 上記の溶媒又はその煙霧体の流出する圧力は、 低圧のも のは 0. 5 kg / crf以下とするが、 高圧のものは同じ く 5 kgノ erf前後 でもよい。 In the discharge of Emarujiyo down adhesive according to intermittently open and close (L), at a "closed" the time of the discharge (T 3) some time from (g), z compressed gas (CA) and fumes of the solvent (S a) is the one that erupts at the same time and for a relatively short time, with the above “A” pattern added as a base. The pressure at which the above-mentioned solvent or its aerosol is discharged is 0.5 kg / crf or less for low pressure ones, but may be around 5 kg / erf for high pressure ones.
上述の如き、 溶媒又はその煙霧体の極少量連続的導入と少量断 5 続的短時間導入との双方による気体スプレイ によって、 各種各様 の特性によりノ ズル上に頹固に執着する液体の残渣を余す所な く 除去することができるのである。 なほ、 上記の説明は、 二流体ス プレイ の場合について述べたが、 その他の場合にも適用される。 即ち基本的には二流体スプレイ (エアスプレイ ) ではないが、 補 As described above, liquid residue firmly adheres to the nozzle due to various characteristics due to the gas spray by both the continuous introduction of the solvent or its fumes in a very small amount and the intermittent short introduction of a small amount. Can be completely removed. In addition, the above description has been made for the case of the two-fluid spray, but it also applies to other cases. In other words, it is not basically a two-fluid spray (air spray).
, 0 助的にはエアを用いるスプレイ方式に対してである。 それは一般 にエア レス · エアスプレイ又はェア ミ ッ ク ススプレイ といわれて いるものである。 , 0 This is for the spray method using air. It is generally referred to as airless air spray or air mix spray.
また、 ェクス ト ルージョ ン式ノ ズルに対しても本方法は適用さ れる。 第 2 1図を参照されたい。 同ノ ズル ( 6 8 ) の外周辺より This method is also applied to extruded nozzles. See FIG. From the outside of the same nozzle (68)
, 5 煙霧体用噴出口 ( 7 6 M ) をもつて煙霧体を吹付ける のである。 The aerosol is sprayed with the aerosol jet (76M).
更にス リ ツ トノ ズルに対しても適用できる。 第 2 3図を参照され たい。 ス リ ッ トノ ズル ( 9 5 ) においては両側のリ ップに吹付け てもよいが、 塗布進行方向 ( F ) に対する後側即ちス リ 'ン ト の リ ップの後側 ( 9 7〉 にのみ煙霧体 ( S a ) を吹き付けてもよい。 Furthermore, it can be applied to slit nozzles. See Figure 23. In the case of the slit nozzle (95), the lip on both sides may be sprayed, but the rear side with respect to the coating progress direction (F), that is, the rear side of the slit lip (97) An aerosol (S a) may be sprayed only on the surface.
2 0 理由は、 同リ ップ ( 9 7 ) に残渣の付着している場合には、 その 航跡を塗布膜面上に残すことになるからである。 The reason for this is that if a residue is attached to the lip (97), the wake will be left on the coating film surface.
上記スリ ッ トノズルと類したものにスロ ッ トノ ズルがあり、 こ れも同様に本発明が適用される。 また同スロ ッ トノ ズルは第 2 4 図に見られるように、 そのリ ップの前側 ( 1 0 6 ) 即ち進行方向 z s 側のリ ップの先端部 ( 1 0 6 T ) を被塗物 ( P ) 面上に接触せし めつつ、 塗布する場合が多い。 いわゆる接触式塗布方法である。 同接触方式には、 その他第 2 2図に示すようなボール式転写ノ ズ  There is a slot nozzle similar to the above-mentioned slit nozzle, and the present invention is similarly applied to this. As shown in Fig. 24, the slot nozzle is attached to the front side (106) of the rip, that is, the tip (106T) of the lip on the zs side in the traveling direction. In many cases, it is applied while contacting the (P) surface. This is a so-called contact coating method. The contact method includes a ball-type transfer nozzle as shown in Fig. 22.
新た な ^紙 ル ( 8 1 ) などに対しても適用される。 New ^ Paper (81).
また対象とする接着剤又はコ一ティ ング剤としては溶媒型又は ェマルジョ ン型のものが望しいが、 特に現段階の実験においては ェマルジヨ ン型接着剤に対して、 特にその溶媒が水、 又は水に 5 %以下のアルコ ール系溶剤の舍まれたもの、 更に又は水に 5 %以 下の添加剤の舍まれたものに対しては、 顕著な効果が認められて いる。  As the adhesive or coating agent to be used, a solvent-type or emulsion-type adhesive is desired, but in the current experiments, the solvent is water or water, especially for the emulsion-type adhesive. Significant effects have been observed for those containing less than 5% alcoholic solvents in water, or those containing less than 5% additives in water.
また本発明に使用される溶媒の消費量は僅少であり、 実験によ ると、 接着剤又はコ一ティ ング剤の重量比 2 %以下であることが 立証されている。  In addition, the consumption of the solvent used in the present invention is small, and experiments have proved that the weight ratio of the adhesive or the coating agent is 2% or less.
次に上記方法に基づく本発明の装置について説明する。 第 1 9 図を參照されたい。 二流体スプレイガンノ ズル ( 1 ) とそれに付 帯する操作エア装置及び液体供給装置は従来のものと殆ど同様で あるが、 圧縮気体供給装置に対しては次の事項が付加される。 即 ち圧縮気体供給配管 ( 6 ) 内、 かつガン ( 1 ) の方に向けて二個 の溶媒の煙霧体 ( S a ) の導入口 ( 8、 1 6 ) が直列に設けられ る。 そしてガン ( 1 ) に近い方を高圧側導入口 ( 1 6 ) とし、 遠 い方を低圧側導入口 ( 8 ) とする。 それぞれの導入口( 8、 1 6 ) の反対側ば記配管 ( 6 ) の外部に引き岀され、 それぞれソ レノ ィ ドバルブ ( 1 5、 1 0 ) に配管接続され、 その中の低圧側配管 ( 9 ) は更に自動圧力調整弁 ( 1 1 ) 若しく は減圧弁(図上不示) を介して溶媒の煙霧体発生装置 ( 2 1 ) に配管接続される。 同図 にてはその煙霧体発生装置としてエア口ゾル発生装置を示してい る。 エアロゾル発生装置とは密閉容器 ( 1 7 ) の中に液体を入れ、 同液体の下方には気体送入用の配管 ( 1 8 ) に連なる気体噴出口 ( 1 9 ) が設けられたものである。  Next, the device of the present invention based on the above method will be described. See Figure 19. The two-fluid spray gun nozzle (1) and the associated operating air device and liquid supply device are almost the same as the conventional one, but the following items are added to the compressed gas supply device. Immediately, the inlets (8, 16) for the fumes (Sa) of two solvents are provided in series in the compressed gas supply pipe (6) and toward the gun (1). The one closer to the gun (1) is the high pressure side inlet (16), and the one farther away is the low pressure side inlet (8). On the opposite side of each inlet (8, 16), it is drawn out of the pipe (6), connected to the solenoid valves (15, 10), respectively, and connected to the low-pressure pipe ( 9) is further connected to the solvent fume generator (21) via an automatic pressure regulating valve (11) or a pressure reducing valve (not shown in the figure). In this figure, an aerosol generator is shown as the aerosol generator. The aerosol generator is a device in which a liquid is put in a closed container (17), and a gas outlet (19) connected to a gas inlet pipe (18) is provided below the liquid. .
次に作用について説明する。 先ずガン ( 1 ) 内バルブ ( 7 ) を 開閉するピス ト ンが、 操作エア源 ( 2 8 ) より コ ン ト ローラーNext, the operation will be described. First, turn the valve (7) inside the gun (1) The piston that opens and closes is controlled by the operation air source (28).
( 3 0 ) に配線接続されるソ レノ ィ ドバルブ ( 2 9 ) を介して作 動されること、 及びスプレイ される液体 ( L ) が加圧ポンプなど により一定圧の下に該ガン ( 1 ) 内に供給されることは従来のも のと同様である。 そして圧縮気体 ( C A) がその圧縮気体源(25) より 自動圧力調整弁 ( 2 6 ) 、 ソ レノ ィ ドバルブ ( 2 7 ) 等を介 して、 上記ガン ( 1 ) 内に供給され、 該ソ レノ ィ ドバルブ( 2 7 ) の開閉に従って噴出されるのも従来と同様である。 しかしこの圧 縮気体 ( C A) の噴出時は勿論、 その休止時においても溶媒の微 粒子が極少量づっ連続的に該圧縮気体の通路を通ってノ ズルより 流出するこ とが、 本作用の前記実施例のものとの相異点である。 (3) is operated via a solenoid valve (29) connected to the wire (30), and the sprayed liquid (L) is supplied to the gun (1) under a constant pressure by a pressurizing pump or the like. It is supplied in the same way as the conventional one. Compressed gas (CA) is supplied from the compressed gas source (25) into the gun (1) through an automatic pressure regulating valve (26), a solenoid valve (27), and the like, and It is the same as the conventional case that it is ejected according to the opening and closing of the solenoid valve (27). However, not only when the compressed gas (CA) is ejected but also when the compressed gas is stopped, fine particles of the solvent flow out of the nozzle through the passage of the compressed gas in a very small amount in a very small amount. This is a difference from the above embodiment.
先ず、 上述の溶媒の微粒子の極少量づっ連続的に流出する作用 について説明する。 それらは煙霧体 (エアロゾル) 発生装置によ るものであり、 同装置の作用について説明する。 密閉容器( 1 7 ) の中に一定の溶媒 ( S ) が補給される。 他方、 圧縮気体発生源 ( 2 5 ) よりの圧縮気体 ( C A) は、 自動圧力調整弁 ( 2 3 ) を 介して所要の一定圧 ( C A z ) に調整され、 ソ レノ ィ ドバルブFirst, a description will be given of the action of continuously flowing out the above-mentioned solvent fine particles in a very small amount. These are due to the aerosol generating device, and the operation of the device will be described. A certain amount of solvent (S) is replenished into the closed container (17). On the other hand, compressed gas source (2 5) from the compressed gas (CA) is adjusted to the required constant pressure (CA z) via the automatic pressure regulating valve (23), source Leno I Dobarubu
( 2 2 ) を介して煙霧体発生装置 ( 2 1 ) の半密閉容器 ( 1 7 ) 内に配管 ( 1 8 ) 導入され、 同配管 ( 1 8 ) は上記補給された溶 媒の液面下に導かれ、 同配管の末端の噴出口 ( 1 9 ) より液中に 噴出し、 気泡 ( S b ) となって液中を上昇、 同液面にて同気泡は 破裂する。 その際、 同液体即ち溶媒は微粒子となって液面上の気 体の中に飛散し、 いわゆる煙霧体 ( S a ) が発生する。 これらの 煙霧体 ( S a ) を排出管 ( 1 5 ) より外部に導かれ、 更に二方の 分岐管 ( 1 2 ) にて分流する。 その一方の支管 ( 9 ) は自勣圧力 調整弁 ( 1 1 ) 又は減圧弁 (図上不示) により元圧より低い所要 の圧力に減圧されて二流体スプレイ ノ ズル ( 1 ) に供給される圧 The pipe (18) is introduced into the semi-hermetic container (17) of the aerosol generator (21) via (22), and the pipe (18) is below the liquid level of the replenished solvent. The liquid is jetted into the liquid from the outlet (19) at the end of the pipe, and rises in the liquid as bubbles (Sb). The bubbles burst at the liquid level. At that time, the liquid, that is, the solvent, becomes fine particles and scatters into the gas on the liquid surface, so-called aerosol (S a) is generated. These aerosols (S a) are led to the outside from the discharge pipe (15), and are further divided by two branch pipes (12). One of the branch pipes (9) is reduced to a required pressure lower than the original pressure by the self-operating pressure regulating valve (11) or a pressure reducing valve (not shown in the figure) and supplied to the two-fluid spray nozzle (1). Pressure
た な用紙 縮気体 ( C A) の配管 ( 6 ) 内に導かれる。 即ち同煙霧体は比較 的低い圧力 ( 0.5 以下) にて、 作業中は常時連続的に流出 されるのである (第 1 8図中の溶媒烴霧体 ( I ) 参照) 。 他方、 上記分岐管 ( 1 2 ) により他方に分かれた煙霧体 ( S a ) は、 必 要によっては自動圧力調整弁 ( 1 4 ) や減圧弁などを介せず、 元 圧のまま即ち上記の連続的のものより も比較的高い圧力の下にソ レノ ィ ドバルブ ( 1 5 ) を通して上記圧縮気体の配管 ( 6 ) 内に 導かれる。 そして該高圧の煙霧体は上記ソ レノ ィ ドバルブ( 1 5 ) の断続的開閉により断繞的に流出されるのである (第 1 8図中の 溶媒煙霧体 ( Π ) 参照) 。 そしてこれらの溶媒の煙霧体は合流し て、 二流体スプレイ ノ ズルが噴出するときには、 第 1 8図中の溶 媒煙霧体の合成パターン (皿) に見られるように数珠状になるの である。 Paper The compressed gas (CA) is led into the pipe (6). That is, the aerosol is constantly and continuously discharged during the work at a relatively low pressure (0.5 or less) (see the solvent-aerosol (I) in Fig. 18). On the other hand, the aerosol (Sa) divided into the other by the branch pipe (12) is kept at the original pressure without passing through an automatic pressure regulating valve (14) or a pressure reducing valve, if necessary. The compressed gas is led into the compressed gas pipe (6) through a solenoid valve (15) under a relatively higher pressure than a continuous one. Then, the high-pressure aerosol is intermittently opened and closed by opening and closing the solenoid valve (15) (see the solvent aerosol (Π) in FIG. 18). The aerosols of these solvents merge and form a rosary when the two-fluid spray nozzle gushes, as shown in the composite pattern (dish) of the solvent aerosol in Fig. 18. .
上記数珠状バタ―ンは、 二流体スプレイ ノ.ズル上に様々な条件 で固着した頹固な残渣を、 容易に取除く ことができるのである。 以上、 高圧及び低圧二様の溶媒煙霧体の導入方法を述べたが、 他にも数種の方式があげられる。  The rosary-shaped butter can easily remove hard residues that have adhered to the two-fluid spray nose nozzle under various conditions. In the above, the introduction method of the high-pressure and low-pressure solvent fumes was described, but there are several other methods.
(1) 上記の説明では、 溶媒煙霧体の発生装置を一個とし、 それよ り一本の排出管を分岐して二種の高低圧煙霧体を得たが、 これ ζ ο をそれぞれ高低圧別個の即ち二個の発生煙霧体を使用してもよ い。  (1) In the above explanation, one solvent fume generator was used, and one discharge pipe was branched to obtain two types of high and low pressure fumes. That is, two generated aerosols may be used.
(2) 煙霧体発生装置には、 第 1 8図に示したようなヱァロゾル発 生装置という公知のものもあるが、 それに代わって、 より安価 なスプレイ式又はベンチユ リ管式、 加熱式 (加湿器などに用い られてるもの) 、 超音波式等も使用することができる。  (2) There is a well-known aerosol generator such as the aerosol generator shown in Fig. 18 in place of the aerosol generator, but instead, a less expensive spray type or bench lily tube type, heating type (humidifying type) Used in vessels, etc.), and ultrasonic type can also be used.

Claims

請 求 の 範 囲 The scope of the claims
1. ノ ズルを通して接着剤又はコーティ ング剤を塗布する方法に おいて、 ノ ズル開口付近に微粒化された溶媒を含む気体流を適用 してノ ズル及びその付近の皮張りを防止するこ とを特徴とするノ 1. In the method of applying an adhesive or a coating agent through the nozzle, a gas stream containing a finely divided solvent is applied to the vicinity of the nozzle opening to prevent skinning around the nozzle and the vicinity thereof. Features
5 ズルの皮張り防止方法。 5 How to prevent chiseling of slime.
2. 圧縮気体により接着剤又はコーティ ング剤をノ ズルを通して スプレイする方法において圧縮気体の供給路中に微粒化された溶 媒を導入し、 該圧縮気体と微粒化された溶媒との混合体を前記ノ ズルよりスプレイ し、 ノ ズル及びその付近の皮張りを防止する こ 2. In a method of spraying an adhesive or a coating agent through a nozzle with a compressed gas, a finely divided solvent is introduced into a supply path of the compressed gas, and a mixture of the compressed gas and the finely divided solvent is formed. Spray from the nozzle to prevent skinning of the nozzle and its surroundings
1 0 とを特徴とするノズルの皮張り防止方法。 1 0 and skinning methods nozzles characterized by.
3. 圧縮気体の供給路中に溶媒流体を導き、 該圧縮気体の作用に より溶媒を微粒化せしめる請求の範囲第 2項記載の方法。  3. The method according to claim 2, wherein the solvent fluid is introduced into a supply path of the compressed gas, and the solvent is atomized by the action of the compressed gas.
4. 圧縮気体の供給路中に溶媒煙霧体を導き、 圧縮気体と圧縮気 体との混合体を形成する請求の範囲第 2項記載の方法。  4. The method according to claim 2, wherein the solvent aerosol is introduced into a supply path of the compressed gas to form a mixture of the compressed gas and the compressed gas.
i s 5. ノ ズルを通して接着剤又はコ—ティ ング剤をヱァレス式に塗 布する方法において、 微粒化された溶媒を舍む圧縮気体流を独立 の供給路を介してノ ズル開口付近に適用してノ ズル及びその付近 の皮張りを防止することを特徴とするノ ズルの皮張り防止方法。 is 5. In a method of applying an adhesive or a coating agent in a pear-shaped manner through a nozzle, a compressed gas flow containing atomized solvent is applied to the vicinity of the nozzle opening through an independent supply path. A method for preventing skinning of a nozzle, comprising preventing skinning of the nozzle and its vicinity.
6. ノ ズルを通して接着剤又はコ ーティ ング剤をエア レス式にス Z 0 プレイするも、 圧縮気体を補助的に併用している方法において、 該圧縮気体中に微粒化された溶媒を混入せしめて、 混合体をノ ズ ルょりスプレイ して、 ノ ズル及びその付近の皮張りを防止する こ とを特徴とするノ ズルの皮張り防止方法。  6. Spray the adhesive or coating agent through the nozzle in an airless manner, but mix the atomized solvent into the compressed gas in a method that uses the compressed gas in an auxiliary manner. And spraying the mixture with a nozzle so as to prevent the nozzle and the vicinity thereof from being skinned.
7. 微粒化された溶媒を比較的低圧の下極小量づっ連繞的に供給 2 5 し、 かつ必要とする時機においては断続的により高圧下でより多 量供給する請求の範囲第 1 項ないし第 6項のいずれかに記載の方 法。 ' 7. atomized solvent relatively low pressure below the minimum amount Dzu' communication Nyo fed 2 5, and in the timing that requires to paragraph 1 no claims more multi amount supplied under high pressure by intermittent The method according to any of paragraphs 6. '
新た な用紙 — — New paper — —
8. 微粒化された溶媒の連続的供給と断続的供給とがそれぞれ別 の供給手段を介して行なわれる請求の範囲第 Ί項に記載の方法。 8. The method according to claim 2, wherein the continuous supply and the intermittent supply of the atomized solvent are performed via separate supply means.
9. ノズルを通して接着剤又ばコ一ティ ング剤を塗布する装置に おいて、 ノズル開口付近に微粒化された溶媒を含む気体流を適用9. In a device that applies an adhesive or coating agent through a nozzle, a gas stream containing atomized solvent is applied near the nozzle opening
5 する手段を備えたことを特徴とするノズルの皮張り防止装置。 5. An apparatus for preventing skinning of a nozzle, comprising:
- -
10 . ノ ズルと、 該ソ ズルに接着剤又はコ一ティ ング剤を供給する 材料供給路と、 該ノズルに圧縮気体を供給して該ノ ズルょり該接 着剤又はコ一ティ ング剤をスプレイするための圧縮気体供給路と を備えて成る装置において、 該圧縮気体内に微粒化された溶媒を 1 0 混入すベく溶媒供給手段を圧縮気体供給路に接続したことを特徴 とするノ ズルの皮張り防止装置。 10. A nozzle, a material supply path for supplying an adhesive or a coating agent to the nozzle, and a compressed gas supplied to the nozzle to supply the adhesive or the coating agent to the nozzle. an apparatus comprising a compressed gas supply passage for spraying the, characterized in that connecting the 1 0 contamination Subeku solvent supplying means atomized solvent into the compressed the gas in the compressed gas supply passage Nozzle anti-skinning device.
11 . 溶媒供耠手段は溶媒液体を圧縮気体供給路に導き、 該圧縮気 体供給路内で圧縮気体の作用により溶媒を微粒化する請求の範囲 第 1 0.項記載の装置。  11. The apparatus according to claim 10, wherein the solvent supply means guides the solvent liquid to the compressed gas supply path, and atomizes the solvent by the action of the compressed gas in the compressed gas supply path.
1 5 12 . 溶媒供給手段は煙霧犾溶媒を圧縮気体供給内に導く請求の範 屈第 1 0項記載の装置。 1 5 12. The solvent supply means devices range屈第1 0 claim of claim guiding fumes犾solvent in the compressed gas supply.
13 . ノズルを通して接着剤又はコ一ティ ング剤を吐出する装置に おいて、 ノズル開口付に微粒化された溶媒を含む気体流を適用す るための独立の溶媒供給路を備えたことを特徴とするノ ズルの皮 z o 張り防止装置。  13. In a device for discharging an adhesive or a coating agent through a nozzle, an independent solvent supply passage for applying a gas flow containing atomized solvent is provided at the nozzle opening. Nozzle skin zo anti-tension device.
14. 接着剤又はコ一ティ ング剤をエアレス式にスプレイするノ ズ ルと、 該スプレイ に補助的に作用する圧縮気供給供路とを有する 装置において、 該圧縮気体に微粒化された溶媒を混入すベく該圧 縮気体供給路に接続された溶媒供給手段を有することを特徵とす 14. In a device having a nozzle for spraying an adhesive or a coating agent in an airless manner, and a compressed air supply channel acting auxiliary to the spray, a solvent atomized into the compressed gas is supplied. It is characterized by having a solvent supply means connected to the compressed gas supply passage for mixing.
Z S る ノ ズルの皮張り防止装置。 Z S This is an anti-skinning device for nozzles.
15 . 微粒化された溶媒を比較的低圧の下極小量づっ連続的に供給 する第 1 の溶媒供給手段と、 必要とする特に断続的により高圧下  15. A first solvent supply means for continuously supplying the atomized solvent in a relatively small amount at a relatively low pressure under a very small amount, and particularly at an intermittently higher pressure required.
新たな泪紙 でより多量供給する第 2 の溶媒供給手段とを有する請求の範囲第 9項ないし第 1 4項のいずれかに記載の方法。 New tear paper The method according to any one of claims 9 to 14, further comprising a second solvent supply means for supplying a larger amount of the solvent.
新た な用紙  New paper
PCT/JP1988/001156 1987-11-16 1988-11-16 Method and apparatus for preventing coating of nozzle WO1989004727A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP62288626A JPH08219B2 (en) 1987-11-16 1987-11-16 How to prevent skinning of nozzles, etc.
JP62/288626 1987-11-16
JP63000848A JP2673432B2 (en) 1988-01-06 1988-01-06 Nozzle skinning prevention method and apparatus
JP63/848 1988-01-06
JP63/2298 1988-01-08
JP63002298A JP2626984B2 (en) 1988-01-08 1988-01-08 Nozzle skinning prevention method and apparatus

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WO1989004727A1 true WO1989004727A1 (en) 1989-06-01

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Cited By (7)

* Cited by examiner, † Cited by third party
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DE4035091A1 (en) * 1990-11-05 1992-05-07 Pagendarm Gmbh APPLICATION DEVICE
US5435488A (en) * 1994-02-17 1995-07-25 Nordson Corporation Method and apparatus for discharging liquid through a nozzle having a hood
NL1000593C2 (en) * 1995-06-19 1996-06-11 Nordson Walcom B V Method and device for applying an adhesive.
DE19639260A1 (en) * 1996-09-25 1998-03-26 Topack Verpacktech Gmbh Applying glue to packet flaps etc.
EP1442665A1 (en) * 2003-01-31 2004-08-04 Hauni Maschinenbau AG Method for applying adhesive to a moving web, as well as device, particolarly to perform the method
WO2011009913A1 (en) * 2009-07-24 2011-01-27 Windmöller & Hölscher Kg Preventing glue buildup on a nozzle plate
WO2017050318A1 (en) * 2015-09-21 2017-03-30 Norbert Deppe Cleaning device for glueing nozzles and cleaning method

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JPS6071369U (en) * 1983-10-24 1985-05-20 アロイ工器株式会社 Spray device with cleaning device
JPS61167646U (en) * 1985-04-05 1986-10-17

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Publication number Priority date Publication date Assignee Title
JPS6071369U (en) * 1983-10-24 1985-05-20 アロイ工器株式会社 Spray device with cleaning device
JPS61167646U (en) * 1985-04-05 1986-10-17

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035091A1 (en) * 1990-11-05 1992-05-07 Pagendarm Gmbh APPLICATION DEVICE
US5435488A (en) * 1994-02-17 1995-07-25 Nordson Corporation Method and apparatus for discharging liquid through a nozzle having a hood
EP0669168A1 (en) * 1994-02-17 1995-08-30 Nordson Corporation Method and apparatus for discharging a liquid material susceptible to problems associated with drying and/or clogging at the nozzle end
NL1000593C2 (en) * 1995-06-19 1996-06-11 Nordson Walcom B V Method and device for applying an adhesive.
EP0750948A1 (en) * 1995-06-19 1997-01-02 Nordson Corporation Process and device for the application of an adhesive
US5720850A (en) * 1995-06-19 1998-02-24 Nordson Corporation Process and device for the application of an adhesive
DE19639260A1 (en) * 1996-09-25 1998-03-26 Topack Verpacktech Gmbh Applying glue to packet flaps etc.
EP1442665A1 (en) * 2003-01-31 2004-08-04 Hauni Maschinenbau AG Method for applying adhesive to a moving web, as well as device, particolarly to perform the method
JP2004337150A (en) * 2003-01-31 2004-12-02 Hauni Maschinenbau Ag Method for applying paste on moving belt material and device for performing the method
CN100404143C (en) * 2003-01-31 2008-07-23 豪尼机械制造股份公司 Method for applying adhesive to a moving web, as well as device, particolarly to perform the method
US7470448B2 (en) 2003-01-31 2008-12-30 Hauni Maschinenbau Ag System and method for applying glue to a moving web
JP4539954B2 (en) * 2003-01-31 2010-09-08 ハウニ・マシイネンバウ・アクチエンゲゼルシヤフト Method for applying glue to a strip to be moved and in particular an apparatus for carrying out the method
WO2011009913A1 (en) * 2009-07-24 2011-01-27 Windmöller & Hölscher Kg Preventing glue buildup on a nozzle plate
WO2017050318A1 (en) * 2015-09-21 2017-03-30 Norbert Deppe Cleaning device for glueing nozzles and cleaning method

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