JPS61171563A - Apparatus for coating surface modifier - Google Patents

Abstract

PURPOSE:To form a uniform extremely thin film to the surface of an article to be treated, by forming a surface modifier into mist comprising fine particles and spraying said mist to the article to be treated. CONSTITUTION:For example, an article to be treated such as a fiber product is received in a rotary treatment tank 2 and mist comprising fine particles with a particle size of about 1.0-200mum generated by a mist generator 9 is injected in the tank 2 and, at the same time, the tank 2 is rotated. By this method, the mist in the tank 2 is stirred along with the article to be treated to be adhered to the surface of the article to be treated and, after a definite time was elapsed, the injection of mist is stopped. Next, warm air is sprayed into the rotary treatment tank 2 through a duct 12 and discharged while the tank 2 is rotated. Whereupon, the moisture or solvent of the mist adhered to the article to be treated is dried and the film comprising a modifier is uniformly and continuously formed to the surface of the article to be treated and, at the same time, dust is blown off by air jet stream.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for applying a surface modifier such as an antistatic agent to the surface of a synthetic resin molded product, textile product, etc.

[Conventional technology]

Conventionally, in order to apply and form a film made of a surface modifier on the surface of a synthetic resin molded product, etc., the object to be treated is immersed in a solution or aqueous dispersion of the surface modifier, or applied with a brush, etc. Also, when molding synthetic resins, surface modifiers are used as raw materials.
This is applied to the surface of the synthetic resin molded product and is allowed to bleed onto the surface, forming a film of the surface modifier on the surface of the synthetic resin molded product.

[Problems to be Solved by the Invention] In these conventional methods, the coating of the surface modifier becomes too thick and is easily peeled off due to friction, resulting in poor durability. In addition, brushes in particular cause uneven application, making it difficult to obtain a uniform coating.

[Means for solving problems]

Therefore, a method has been developed in which a surface modifier is made into a mist consisting of fine particles, and this mist is sprayed onto the object to be treated, thereby forming an extremely thin film uniformly on the surface of the object to be treated.

The present invention uses this method to reliably and quickly form a uniform and continuous coating of the surface modifier. That is, the present invention provides a closed rotary treatment tank with an opening/closing door for storing objects to be treated, and an appropriate drive source for rotating this rotary treatment tank, and a surface modifier solution or aqueous dispersion. A generator is installed to create a mist consisting of fine particles,
A device for injecting or sucking the mist from the generator into the rotary processing tank is provided, and a device for introducing and exhausting air into the rotary processing tank is provided.

[Effect]

To apply a surface modifying agent to an object to be treated using this invention, first place the object to be treated in a rotating treatment tank, inject mist from the above-mentioned mist generator into the rotating treatment tank, and at the same time rotate the Rotate the treatment tank. As a result, the mist in the rotary processing tank is reduced by half along with the object to be processed. Do this 1 and a half for a certain period of time and stop injecting the mist. As a result, the mist adheres evenly to the surface of the object to be treated. Thereafter, the rotary treatment tank is rotated while introducing and exhausting air into the rotary treatment tank. Through this air injection and rotation, the water and solvent in the mist adhering to the object to be treated is dried, and a film made of the surface modifier is uniformly and continuously formed on the surface of the object to be treated. It blows away dirt and dust, resulting in a clean product.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment of the invention, 1
2 is a box-shaped apparatus main body, and 2 is a substantially cylindrical rotating processing tank having an opening on one side. The rotating processing tank 2 is rotatably supported within the apparatus main body 1 by a suitable bearing. 3 is a shaft protruding from the outer surface opposite to the opening of this rotary processing tank 2; 4 is a shaft of the apparatus main body 1 corresponding to the opening of this rotary processing tank 2;
A circular main body opening provided on one side, 5 an opening/closing door provided in this main body opening 4, 6 a motor provided within the device main body 1,
7 connects one end to the rotational drive of this motor 6, two 1, 1o11
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A belt 1 is attached to the belt, and 8 is a mist inlet provided on the opening/closing door 5. It is connected to the duct 10 of the mist generator 9. Reference numeral 11 denotes an annular air introduction port provided at the periphery of the main body opening 4 toward the opening of the single-rotation processing tank 2;
This air inlet 11 is connected to a duct 12 on the outside of the device main body 1.
and is connected via a filter 13 and a heater 14.

Reference numeral 15 indicates a large number of vent holes provided on the side opposite to the opening of the rotating processing tank 2, 16 indicates a mesh cover provided within the rotating processing tank 2 so as to cover these vent holes 15, and 17 indicates a mesh cover provided within the apparatus main body 1. , an exhaust suction chamber provided outside the rotary processing tank 2 so as to cover these vents 15, and an exhaust duct 18 connected at one end to the exhaust suction chamber 17 and led out to the outside of the apparatus main body 1 at the other end. The exhaust duct 18 has a bag E118a for collecting moisture, dust, etc. using a filter or the like.

19 is a suction propeller rotatably provided on the outer periphery of the shaft 3 in the exhaust suction chamber 17;
is a rotary base body 20 extending both inside and outside the exhaust suction chamber 17.
It is rotated by a belt 21 provided on the outer periphery and hooked between the outer periphery of the rotating base 20 and the rotational drive shaft on the other side of the motor 5. 22 is a brush protrusion provided at regular intervals on the inner periphery of the rotary processing tank 2; 23 is a sliding packing provided on the outer periphery of the opening of the rotating processing tank 2; It is in contact with the inner peripheral edge of the main body opening 4, and the inside of the rotary processing tank 2 is sealed when the opening/closing door 5 is closed.

In the case of this embodiment, first open the opening/closing door 5 of the device main body 1,
For example, a textile product to be treated is placed in a rotary treatment tank 2,
The opening/closing door 5 is closed to seal the rotary processing tank 2, and the mist made of fine particles of approximately 1.0 to 200μ generated by the mist generator 9 is passed through the duct 10 and into the rotary processing tank through the mist inlet 8. At the same time, the motor 6 is driven to rotate the rotary treatment tank 2.As a result, the objects to be treated rotate and fall within the rotary treatment tank 2, and the mist is also rotated. The mist is halved in the processing tank 2 and adheres to the surface of the object to be processed.Furthermore, at this time, the mist also adheres to the brushes of the brush protrusions 22 on the inner periphery of the rotary processing tank 2, and the mist is transferred to the surface of the object to be processed through this. The mist adheres to it.In this way, while rotating the rotary treatment tank 2 for a certain period of time, the mist is sprayed into it.Then, the injection of the mist is stopped and air is sent through the second pipe 12, and this air is used to filter the filter 13 and the heater I4. through the air inlet 11 to the rotating treatment tank 2
Blows warm air inside. At the same time, the motor 6
is driven to rotate the rotary processing tank 2 and rotate the suction propeller 19 to suck and exhaust the air in the rotary processing tank 2. As a result, the solvent and moisture in the mist adhering to the surface of the object to be processed in the rotary processing tank 2 evaporate, and a film made of an antistatic agent is formed on the surface of the object to be processed. At the same time, the dust, flakes, and lint adhering to the surface of the workpiece are blown away.
It is discharged together with air through the exhaust duct 18.

In this way, a uniform coating of the antistatic agent is formed on all surfaces of the textile product to be treated in a short period of time.

3 and 4 show a second embodiment of the present invention, in which, instead of the above embodiment, the end of the air introduction duct 12' is directly connected to a part of the rotating treatment tank 2. Vent hole 15
Further, the end of the exhaust duct 18' is directly opposed to the other part of the ventilation hole 15 of the rotary treatment tank 2, and the duct 12' and the duct 10' from the mist generator 9 are connected. , a switching valve 24 is provided within these joints. Further, a protrusion 25 is provided on the inner periphery of the rotary processing tank 2 in place of the brush protrusion 22, and the other configurations are substantially the same as in the first embodiment.

In this embodiment, as in the above-mentioned embodiment, first, a small synthetic resin molded product to be processed is placed in the rotating processing tank 2, and the human milk processing tank 2 is rotated once, and at the same time, it is charged by the mist generator 9. The solution or aqueous dispersion of the inhibitor is made into a mist of fine particles, and the switching valve 24 is used to turn the solution or aqueous dispersion of the inhibitor into a mist consisting of fine particles.
The inside is closed and mist is sprayed into the rotary treatment tank 2. Soi-61,. Work ゎ2□ka. Eh, 4°, e-duct 1
0' is closed and warm air is rotated to suck and exhaust the air inside the treatment tank 2.

As a result, a uniform film made of an antistatic agent is formed on the surface of the synthetic resin molded product to be processed, and the ridges 25 in the rotary treatment tank 2 are used to form a uniform coating made of the antistatic agent. etc. are removed, and these debris, dust, dust, etc. are blown out of the rotary processing tank 2 through the exhaust duct h18' by hot air injection and exhaust.

Note that the mist and air may be introduced into the rotary processing tank 2 by injection, suction, or both. Further, in the above embodiment, the size of the fine particles of the mist was set to 1.0 to 200 μm, but the size is not limited to this. Furthermore, in cases where the objects to be treated tend to come into close contact with each other, if a ball-shaped or cylindrical object that is easily rotated is placed in the rotary processing tank 2 for processing, each object to be treated can be processed individually without coming into close contact with each other. Furthermore, if the objects to be processed are easily damaged, by placing an amorphous cushioning material in the rotating process 492, the objects can be processed without damaging each other.

〔Effect of the invention〕

The present invention is as follows: (1) A solution or aqueous dispersion of a surface modifier is made into a mist consisting of fine particles.

This mist 1- is injected into a closed rotary processing tank containing the object to be processed, and rotates with the object to be processed, so that the mist evenly adheres to the entire surface of the object in a short period of time.

Therefore, even if the external shape is complicated, mist will adhere to all surfaces, and mist will adhere to the surface of the workpiece due to contact and friction between the workpieces in the rotating processing tank. At the same time that a uniform film is formed, the above r! The evaporation of the solvent including water is promoted by the rubbing. In addition, especially when the surface modifier is an antistatic agent, even if the objects to be treated come into contact with each other in the rotary processing tank, the attached antistatic agent will not cause scratches due to electrostatic discharge.

In this way, since mist and air are sprayed onto the object to be treated in the rotary treatment tank, the surface modifier coating can be formed at high speed. Moreover, the apparatus of the present invention can be used not only for synthetic resin molded products and textile products, but also for other suitable objects. Furthermore, the surface modifier is not limited to antistatic agents, but can be applied to all kinds of agents such as antifogging agents, antifungal agents, and softening agents for textile products.

Also, during drying by air injection, the objects to be processed come into contact with each other in the rotating processing tank, and dust that has adhered before processing and particles from molding are removed by friction and discharged together with the air. Therefore, it also has the effect of cleaning the object to be treated. Furthermore, since the spraying of MIS 1- onto the object to be treated is carried out in a closed rotary treatment tank, there is no wastage of the surface modifier.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view showing a first embodiment of the invention, FIG. 2 is a vertical sectional view of the rotation processing Iff in the same embodiment, and FIG. 3 is a second embodiment of the invention. A partially sectional side view and FIG. 4 are longitudinal sectional views of the rotary processing tank in the same embodiment. In the figure, 1 is the main body, 2 is the rotating treatment tank, 6 is the motor,
8 is a mist inlet, and 9 is a mist generator. 11 is an air inlet, and 15 is a ventilation hole.

Claims (1)

[Claims] A closed rotary treatment tank with an opening/closing door is provided to store the material to be treated, and an appropriate driving source is provided to rotate this rotary treatment tank, and the solution or aqueous dispersion of the surface modifier is turned into a mist consisting of fine particles. and a device for injecting or inhaling the mist from the generator into the rotating treatment tank,
A surface modifier coating device, further comprising a device for introducing and exhausting air into the rotary treatment tank.