JP2012035246A - Method and apparatus for reinforcing formation of coating film or adhesive film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for reinforcing formation of coating or adhesion between a coating target surface and a coating film related to coatings, coating or adhesion between an adhesion target surface and an adhesive film in adhesion or adhesion.SOLUTION: Destruction elimination of bubbles and wetting are promoted by irradiating a coating surface to be coated with a coating or an adhesive surface to be coated with an adhesive with ultrasonic waves 20 of various kinds of required ranges of frequencies, and an adhesion target surface and an adhesive film are adhered firmly.

Description

  The present invention relates to a method and an apparatus for strengthening a coating film or an adhesive film capable of enhancing the adhesion or adhesion between an adhesion surface and a coating film in a coating material or an adhesive film and an adhesive film.

  Bridges, guardrails, outdoor amusement equipment, outdoor equipment, etc. are painted using paints that retain a variety of colors and performances in addition to protecting the construction materials, as well as building structures. In addition to the interior decoration of the building space, the interior material such as wallpaper, textiles, film, etc. on the upper surface of the base material such as mortar and plywood, etc. by construction with comfort such as moisture retention and noise reduction and low cost It is exclusively used for bonding with an adhesive.

By the way, the paint film applied to the current structure, especially the outdoor structure, cracks and breaks in a short period of time. As well as being promoted, the aesthetics are also lost, so painting is forced each time. Since the outdoor structure covers a large area, the painting cost is enormous.
On the other hand, especially on the wall in the building space such as a built building, an adhesive is applied to the ground surface made of mortar or plywood that forms the wall, and appropriate wallpaper, fabric, sheet material, etc. are adhered. However, even in the case of such wallpaper, the adhesive edges and joints are deformed and peeled in a short period of time, and the swelling is expanded along the entire adhesive surface, or the swelling is propagated and expanded everywhere. Is significantly impaired. In addition, the deformed and peeled portion becomes a suitable breeding place for fines and moss, and there is a risk that not only odor is generated but also a very unsanitary space.

By the way, strong adhesion between the adherend and the contact surface between the adherend and the coating film is necessary for forming a strong coating film between the adherend and the adherend. In the case of adhesion such as paint or wallpaper, primary bond (covalent bond), ionic bond, hydrogen bond and secondary bond (intermolecular bond) sharing a pair of electrons are important. However, at least between the adherend and the coating in the paint, or between the adherend and the adherent in adhesion, mediate a primary bond and a hydrogen, which means a bond between atoms that share a pair of electrons. And a secondary bond of Van der Worth molecular bond.
In order for these bonds to be sufficiently exerted, it is necessary that the adherend and the coating film or adhesive film to be formed have a tight bond and a large bonding area.

  However, as components of paints and adhesives in the present situation, a vehicle for forming a strong coating film or adhesive film, a solvent for adjusting the viscosity and achieving close penetration to the adherend surface, and a pigment for beautifying, and Additives that maintain usage performance are blended, but the purpose of use is not required for machine use or home use, and since the amount used is small, usually the required components Since it is blended in a proportion and filled and sealed in a small closed container, there is no unnecessary air bubbles in the inside, and even when coating and bonding, the mutual contact surface and the large contact area ratio It can be applied and bonded, thus forming a strong coating film and adhesive film. In addition, when applying and bonding for work and home use, the application area and adhesion area are also small, so even if the surface of the temporary adherend is not smooth, the application pressure and adhesion pressure can be reduced. It is possible to easily adjust so-called wetting by embedding and penetrating a coating agent or an adhesive into a rough concave portion.

On the other hand, in the coating of industrial structures and the adhesion of wallpaper etc. to the building space of facility buildings, etc., it is applied or adhered to an extremely large area. In order to realize the use performance, the paint component and the adhesive component are appropriately mixed and stirred, and for this purpose, the vehicle is used by mixing and stirring the solvent, the pigment and the additive. A large amount of air bubbles are mixed in, which makes it impossible to apply and adhere to the adherend and the coating film or adhesive film to be formed, as well as to apply and bond with a large coating area or adhesion area. Neither paint nor adhesion with excellent durability can be realized.
In addition, the surface to be coated and bonded has a rough surface with a large number of recessed portions, and the loss of air bubbles can be achieved by adding an antifoaming agent. As a result, it becomes impossible to achieve close coating and adhesion with each other, as well as application and adhesion with a large application area or adhesion area.

  For this reason, as a means for removing the mixed bubbles in the paint or adhesive, use of a low-viscosity paint or adhesive, defoaming the paint and adhesive with a reduced pressure of 10 to 20 mmHg, or approximately 40 to Although heating to 50 ° C. has been proposed as a technical solution, it is extremely difficult to deal with the application and adhesion to a vast area and complex shape part in practical use, In reality, no solution has been made.

  Inventors and others have made extensive studies in view of such circumstances, and as a result, ultrasonic waves can easily penetrate into the coating layer and the adhesive layer, and not only the destruction and destruction of bubbles depending on the wavelength, but also the coating layer. In addition, the inventors have investigated that heating in the adhesive layer and the viscosity of the coating material or adhesive agent are lowered to significantly increase the wettability, thereby enhancing the formation of a coating film or an adhesive film.

  The present invention can enhance the formation of adhesion or adhesion between the adhesion surface and the coating film in the paint, or the adhesion surface and the adhesion film in the adhesive, and thus can maintain the coating and adhesion over a long period of time. Another object of the present invention is to provide a method and apparatus for strengthening a coating film or an adhesive film.

  The technical means employed by the present invention in order to solve the above-mentioned problems is that the paint in the coating layer is formed by irradiating ultrasonic waves that can be easily transmitted into the coating layer related to coating or into the adhesive layer related to adhesion. Or, the air bubbles mixed in the adhesive in the adhesive layer are destroyed and lost by the cavitation action, and further, a straight flow or a circulating flow is added to the paint in the coating layer and the adhesive in the adhesive layer, Increases wettability due to penetration into the microscopic recesses that appear in the body to form a tight coating and adhesion film by increasing adhesion area and adhesion area. There exists a configuration of a method for creating heat generation due to interface friction at the medium interface with the film so as to form an early dry coating film or adhesive film.

In addition, in the apparatus for realizing the reinforcement forming method, paints in practical use range from facility buildings to outdoor playground equipment, etc., and adhesives can be used to bond wallpaper, plywood, and plywood in building sections. It is also used for paper and wood tools.
In the present invention, the coating film and the adhesive film that are painted and bonded in practical use are irradiated to strengthen the coating film and the adhesive film.
In an apparatus for realizing such a reinforced forming method, a shape and structure capable of effectively irradiating ultrasonic waves to a wide range of coating shapes and adhesive shapes in practical use, and particularly depending on a coating film and an adhesive in coating Although the original paint and adhesive forming the adhesive film are low in viscosity, the viscosity increases and cures over time. In the case of low viscosity at the time of adhesion, although the destruction and disappearance of bubbles can be easily achieved with a small irradiation intensity, a higher irradiation intensity is required in a geometrical series as the viscosity increases.

  Since bubble destruction by cavitation is favored by low frequency ultrasonic waves, at least in a low frequency range of 30 to 60 KHz, a medium frequency range of 120 to 240 KHz, and a high frequency range of 500 to 1,000 KHz, and An ultrasonic oscillator that can oscillate at a continuous wavelength or a pulse wavelength with an appropriate time, and a sliding surface that rotates or rotates with an application surface to which a paint is applied or an adhesive surface to which an adhesive is applied Pressed sliding part that can slide, rotational sliding part, flat part that can be irradiated with ultrasonic waves evenly on the whole surface in close proximity to the coated surface or adhesive surface, or coated surface with the required dimensions and shape Coating film or adhesive film having a configuration in which an enveloping portion formed in a shape capable of enveloping an adhesive surface or a radiation portion capable of ultrasonic irradiation from a position away from the coating surface or the adhesive surface is arranged Strengthening It consists in forming apparatus.

  The present invention is configured as described above, and a coating layer is formed by applying a coating to an adherend, or an adhesive layer formed by applying an adhesive to the adherend is in contact with the adherend. In a state or from a required distance, ultrasonic waves in a low frequency range whose frequency is at least 30 to 60 KHz, a middle frequency range where the frequency is 120 to 240 KHz, and a high frequency range where the frequency is 500 to 1,000 KHz are continuous. Even if a lot of bubbles are mixed by mixing and stirring various components according to the purpose of use and usage characteristics, the coating film and adhesive film after coating are in a low-viscosity state. , The mixed bubbles are easily destroyed and lost by cavitation, and even if the viscosity increases with time, the strong cavitation action is applied by the low frequency ultrasonic irradiation, and the destruction and destruction are confirmed. It is achieved in.

  In addition, in the present invention, the coating film and the adhesive film immediately after application and adhesion have extremely low viscosity, and the irradiated ultrasonic waves mainly have medium and high frequencies, and the destruction and loss of bubbles due to gentle cavitation, In particular, due to the action of the straight flow and circulation flow that are continuously added finely, the coating and adhesive are actively penetrated and filled in the fine recesses that appear on the adherend, and large adhesion is applied together with close adhesion. Since application or adhesion is performed according to the area or the adhesion area, the formation of the coating film or the adhesive film is remarkably enhanced.

  In addition, in the device of the present invention, in addition to the low-frequency ultrasonic wave that creates a strong cavitation action with a frequency of 30 to 60 KHz and the cavitation action with a frequency of 120 to 240 KHz, it promotes the wetting by the straight action and the circulation action. Medium frequency ultrasonic waves, and when the frequency is 500 to 1,000 KHz, wetting is promoted by cavitation action, straight action and circulation action, and boundary friction is generated at the medium interface between the adherend and the coating film or adhesive film. An ultrasonic oscillator that can oscillate high-frequency ultrasonic waves that create drying acceleration by heat generation at a continuous wavelength or pulse wavelength over an appropriate period of time is applied to the application surface or adhesive applied to the paint. In the vicinity of a rotating sliding part that can be pressed and slid with the adhesive surface to be applied, Flat part that can irradiate ultrasonic waves evenly across the surface, enveloping irradiation part formed in a shape that can wrap the application surface or adhesive surface with the required size and shape, or application surface or adhesive surface Since the oscillating device is arranged so that the ultrasonic wave is irradiated toward the outer surface from the irradiation base composed of the radiation irradiation part that can be irradiated from the position, the area and structure of the object to be painted or adhered By appropriately selecting the irradiation base according to the above, ultrasonic irradiation can be achieved very efficiently, and the destruction of the bubbles in the coating film and the adhesive film and the promotion of wetting can promote the coating film and the adhesive film. Strengthening is achieved, and short drying can also be realized by internal heat generation by high frequency ultrasonic waves.

  A rotating sliding part with a diameter of 12 cm and a length of 50 cm after adhering wallpaper to a plywood base material with an emulsion adhesive in which pigments and stabilizers are blended with 20 to 40% by weight of a vehicle such as vinyl acetate, acrylic resin or epoxy resin. Then, high-frequency ultrasonic waves and medium-frequency ultrasonic waves are oscillated and irradiated alternately at intervals of 1.5 seconds.

In the following, the embodiment of the present invention will be described in detail with reference to the drawing of the reinforced forming apparatus. In FIG. FIG. 1B shows a state in which the adhesive film 2A is applied to the base material 2C of the casing 2B, which is the adherend, and is adhered to the wallpaper 2D by applying the adhesive 2. Yes.
Thus, the coating film 1A made of the current paint 1 and the adhesive film 2A made of the adhesive 2 are homogeneous and strong, although they are apparently coated and bonded to the adherend 1B and the base material 2C. Not painted or glued. In other words, FIG. 2 is an enlarged view of the coating state of the coating 1A and the adherend 1B by the coating 1, and even though the outer surface of the adherend 1B seems to be smooth, a large amount of fine recesses 10B appear. In other words, the coating film 1A is not sufficiently applied in a state where the coating film 1A has sufficiently penetrated into the fine recessed portion 10B. Therefore, the coating film 1A and the adherend 1B are substantially adhered and bonded. The area is extremely small and sufficient molecular bonding force is not exhibited.

In addition, since the coating component is blended and agitated in accordance with the intended purpose and performance of the coating film 1A and then used for coating, the coating film 1A formed by coating with the coating material 1A contains A large amount of air bubbles 10A coexist, and the air bubbles 10A expand and explode due to temperature changes with the course of use. Furthermore, due to moisture absorption, water absorption, or bacterial and soot adhesion propagation, And it causes rust.
And since such a cause occurs in the coating film 1A or the inner boundary between the coating film 1A and the adherend 1B, the discovery of cracks, peeling or rust is delayed, and the repair cost is enormous. The result is.

For this purpose, when forming the coating film 1A or the adhesive film 2A, the bubbles 10A mixed in the coating film 1A or the adhesive film 2A are lost to improve the strength of the coating film 1A or the adhesive film 2A itself. In addition, it is important that the coating 1A and the fine concave portion 10B that appears on the outer surface of the adherend 1B are sufficiently penetrated, that is, wetness is increased to increase the adhesion and adhesion area.
As a countermeasure for this, the air bubbles 10A that easily pass through the coating film 1A or the like applied to the adherend 1B and are mixed in the coating film 1A or the adhesive film 2A are destroyed and lost by the cavitation action. The so-called wetting is improved by penetrating the fine recessed portion 10B, which appears on the surface of the adherend 1B to which the coating film 1A is applied, by its linear movement action, circulation action, or vibrational heat generation action at the boundary. A means for irradiating possible ultrasound 20 is used.

  The ultrasonic wave 20 is generally divided into a low frequency of 30 Hz or lower, an audible frequency of 30 to 20 KHz, and an ultrasonic wave of 20 KHz or higher. In the present invention, the cavitation action is the action of ultrasonic waves. For the sake of convenience, the frequency is 20 to 100 KHz, the frequency is 20 to 100 KHz, the frequency is 100 to 500 KHz, and the frequency is 100 to 500 KHz. 500 KHz or more is handled as high frequency ultrasonic waves.

  Further, the cavitation action in the use of the ultrasonic wave 20 exhibits a stronger destruction and disappearance effect as the ultrasonic wave becomes lower frequency, and the medium frequency ultrasonic wave exhibits an excellent effect in the straight action and the circulation action, and at the boundary portion. Since the vibrational heat generation action exhibits good vibrational heat generation by medium frequency and high frequency ultrasonic waves, the components, viscosity, thickness, amount of mixed bubbles 10A, and drying of coating film 1A and adhesive film 2A are practically used. The irradiation rate of the ultrasonic frequency to be irradiated, the continuous wavelength or the pulse wavelength should be determined in consideration of the expectation and the like. In particular, only for the destruction and destruction of the mixed bubble 10A due to the cavitation action, 1.5 seconds to 3.0 seconds. A pulse wavelength in seconds is desirable.

  The ultrasonic oscillating tool 3 used in the present invention includes a wide variety of oscillating materials. However, for practical use, the ultrasonic oscillating tool 3 has good oscillating characteristics in the ultrasonic wavelength region and is lightweight, small and inexpensive. Since it is convenient, a unimorph oscillator 3A using a piezoelectric element is proposed as shown in FIG. 3A. The unimorph oscillator 3A has a barium titanate or zirconate titanate on one side of the diaphragm 30A. A piezoelectric ceramic layer 30B made of lead acid is joined and an input line 30C for voltage application is connected. A unimorph oscillator 3A or a bimorph oscillator 3B using the piezoelectric element is a piazo electric reverse. The shape is distorted by the effect, that is, external voltage application, and a low frequency, an audible frequency, or an ultrasonic wave is oscillated along with this distortion. As shown in FIG. Piezoelectric ceramic layers 30B on both sides, the 30B bimorph oscillator device 3B are bonded, ultrasonic oscillation intensity is made by more powerful Piazo electrical counterproductive.

  As an advantageous ultrasonic transmitter 3 instead of the unimorph oscillator 3A or bimorph oscillator 3B using such a piezoelectric element, a ferrite oscillator 3C using a ferrite material having a magnetostrictive vibration action as shown in FIG. In practical use, it may naturally be irradiated from a small range or from a wide range, but the unimorph oscillator 3A and the bimorph oscillator 3B using a piezoelectric element are lightweight, small and thin, and thus have a wide area. When irradiating from, it is advantageous to use them arranged in parallel at a required interval.

The ultrasonic oscillating device 3 thus configured has an appropriate frequency in the low frequency ultrasonic region of 30 to 60 KHz, an appropriate frequency in the medium frequency ultrasonic region of 120 to 240 KHz, and a frequency of 500 to 1 from that frequency. An oscillation circuit 4 for oscillating an appropriate frequency in a high frequency region of 1,000 KHz is shown in FIG. 5, and the oscillation circuit 4 can oscillate a desired specific frequency by the ceramic oscillator 4A and the trajector 4B. It is an inexpensive self-excited oscillation circuit, and can easily oscillate from a low-frequency ultrasonic wave to a high-frequency ultrasonic wave by switching the self-excited oscillation circuit 4 having a required specific frequency in a suitable number of configurations and switching.
Naturally, if the transmission output 4C from the self-excited oscillation circuit 4 is directly input to the ultrasonic oscillating tool 3, continuous oscillation is performed, and if a pulse circuit (not shown) is interposed, pulse oscillation is possible. .

  FIG. 6 is a view showing how the coating film or adhesive film strengthening apparatus 5 of the present invention is used. FIG. 6A is a figure that is slid or rotationally slid from the upper surface of the wallpaper 2D bonded to the wall surface in the building space. Among the devices that perform ultrasonic irradiation, the state in which the rotary sliding oscillator 31 is connected to the base 5 is shown, and the outer peripheral surface of the rotary sliding oscillator 31 has heat resistance and durability, Since non-adhesiveness, insulation, lightness, etc. are required, the outer surface material 31A made of tetrafluoroethylene resin, silicon resin, and lightweight polyester resin or polyamide resin is formed in a substantially cylindrical shape, Radial walls 31C, 31C, 31C... Are formed radially from the core portion 31B in an appropriate amount, preferably 6 to 8 equally, inside the outer surface material 31A, and the leading edges of the radial walls 31C, 31C, 31C. Over Waves oscillation device 3 is provided. Further, it is also proposed to use the radiation walls 31C, 31C, 31C... As a magnetostrictive vibrator by integrally forming them with a ferrite material.

FIG. 6B shows a usage mode of the pressing / sliding oscillating device 35 by applying an ultrasonic treatment by pressing and sliding the coated surface and the upper surface of the bonding surface on which a flat facility surface is coated or bonded. A flat pressing / sliding oscillator 32 having a required size is connected to the tip of the base 5 and the flat pressing / sliding oscillator 32 has an appropriate interval in the flat pressing / sliding oscillator 32. The unimorph transmitter 3A or the bimorph oscillator 3B is arranged so as to be able to irradiate from its lower surface.
Further, in FIG. 6C, there is shown a radiation irradiation oscillator 33 that irradiates a coating film surface by coating or an adhesion surface by adhesion from a distant position to strengthen the coating film or the adhesive film. As a matter of course, since it irradiates in the air at a long distance, high-power irradiation is required and the ultrasonic wave has high directivity. It is desirable to arrange an oscillator such as the bimorph oscillator 3B with an interval and a position so that the irradiation direction is focused on the inner surface of the base 5.

  FIG. 7 is an explanatory diagram of the internal state of the coating film 1 when the method for strengthening a coating film or an adhesive film according to the present invention is applied. The bubbles 10A mixed in the coating film 1A are destroyed by the cavitation action. Combined with the straight and circulating action and the vibrational heat generation action at the boundary between the coating film 1A and the adherend 1B, it is surely also in the fine recess 10B that appears on the surface of the adherend 1B. The coating 1A is strongly applied and formed by the penetration of the resin, and cracks and peeling are prevented for a long time.

Industrial applicability

  It can be used immediately on the coating surface with the current paint and the bonding surface with an adhesive.

  It is explanatory drawing of a coating film and an adhesive film.   It is expansion explanatory drawing of the application state of a coating film.   It is explanatory drawing of an ultrasonic oscillating tool.   It is explanatory drawing of a ferrite oscillation tool.   It is an illustration figure of an oscillation circuit.   It is a use mode figure of a reinforced formation apparatus.   It is explanatory drawing of the coating film by which the ultrasonic treatment was carried out.

DESCRIPTION OF SYMBOLS 1 Paint 1A Coating film 1B Adhering body 2A Adhesive film 2B Driving body 2C Base material 2D Wallpaper 3 Ultrasonic oscillating tool 3A Unimorph oscillating tool 3B Bimorph oscillating tool 3C Ferrite oscillating tool 4 Oscillation circuit 4A Ceramic oscillator 4B Transger 4C Oscillation output 5 Strengthening and Forming Apparatus of the Present Invention 5A Base 10A Bubble 10B Fine Concave 20 Ultrasonic 30 Ultrasonic Oscillator 30A Piezoelectric Element 30A Diaphragm 30B Piezoelectric Ceramic Layer 30C Input Line 31 Rotary Sliding Oscillator 31A External Material 31B Core 31C Radiation Wall 32 Press sliding oscillator 33 Radiation irradiation oscillator

Claims (4)

  Ultrasonic waves having an appropriate frequency within a range of 30 to 60 KHz, a range of 120 to 240 KHz, and a range of 500 to 1,000 KHz are irradiated on the coated surface coated with paint or the adhesive surface coated with adhesive. Enhances the formation of coatings and adhesive films by increasing the wettability of paints and adhesives through the destruction and disappearance of air bubbles mixed by cavitation, straightening, circulation, and vibration and heat generation at the boundary. A method for strengthening a coating film or an adhesive film.   The method for reinforcing and forming a coating film or an adhesive film according to claim 1, wherein the ultrasonic wave applied to the coated surface or the adhesive surface is pulse irradiation having a pulse interval of 1.0 to 3.0 seconds.   An oscillation circuit capable of oscillating an appropriate frequency in the range of 30 to 60 KHz, 120 to 240 kHz, and 500 to 1,000 KHz, an ultrasonic oscillator that oscillates ultrasonic waves by this oscillation output, and a coating surface The ultrasonic oscillating device is disposed in a pressure sliding part that is pressed and slid with the adhesive surface, a rotary sliding part that rotates and slides, or a radiation part that radiates from a position away from the coating surface or the adhesive surface; An apparatus for reinforcing and forming a coating film or an adhesive film, comprising a structure in which the pressing sliding portion, the rotating sliding portion, or the radiation portion is connected to a base portion.   4. The apparatus for reinforcing and forming a coating film or an adhesive film according to claim 3, wherein the ultrasonic oscillator comprises a unimorph or bimorph using a piezoelectric element.

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