JPS5827828Y2 - Disposable painting sponge brush - Google Patents

Description

[Detailed description of the invention] A brush with fairly long bristles is usually used to apply paints, adhesives, etc.

This is a necessary condition in order to maintain the required amount of coating liquid and apply it evenly while rubbing the coating surface with an appropriate pressing force.

During coating work, the coating liquid is sequentially immersed in the coating liquid and refilled while continuing the work, but excess coating liquid often spills out and falls, contaminating unnecessary parts and causing loss of coating liquid. Also, after finishing the work, the brush must be washed with thinner, detergent, etc. If the washing is insufficient, the brush will become stiff when reused, and the coating liquid will not be contained enough, making it impossible to achieve a satisfactory application job. There are many practical drawbacks, such as the lack of performance.

Moreover, this painting brush is quite expensive, and the consumption of thinner, detergent, etc. and the disposal thereof are extremely troublesome.

In view of this point, the present invention has been developed by implanting short fibers on the surface of an open-cell sponge board and using this as a brush body.
The present invention provides a painting brush that has almost the same application performance as conventional brushes and does not have the above-mentioned problems.

The open-cell sponge board contains and retains a large amount of coating liquid,
While possessing appropriate elasticity and generating rubbing pressure during application, -
This is to replenish the spilled coating liquid on the brush surface and improve the brush condition of the flocked short fibers. Usually, the foaming ratio of solvent-resistant polyurethane or synthetic rubber is 50 to 60 times. , an open-cell sponge with a specific gravity of 0.02 to 0.015, and a thickness of 5 to 20 m depending on the application purpose.
Select as appropriate within the range of m.

Adhesive is applied to this sponge board, and the short fibers are flocked at a relatively high density mainly by electrostatic flocking method, if necessary in combination with vibration method, and fixed by heat treatment.

At this time, if the adhesive is applied to the entire surface of the sponge board, the liquid permeability will be inhibited, making it unsuitable for this purpose. The iron part is the part through which the liquid passes.

Suitable adhesives to be used include acrylic ester, bourethane, synthetic rubber emulsion type, and solvent type synthetic resin adhesives.

If the adhesive liquid penetrates into the inside of the sponge body too much, it will impair the liquid retention and liquid permeability of the sponge and reduce the adhesion of short fibers, so it is preferable to use one with a relatively high viscosity, and it is usually measured using a B-type viscometer. Approximately 30,000 CPS was suitable, and a coating amount of 250 to 400 g/m2 was sufficient.

In addition, short fibers can be of any type as long as they are used for brushes, but synthetic fibers such as nylon and polyester are suitable for practical use.
0 d thick and 3 to 20 mm long 200 to 4
Adhere selected flocks within the range of adhesion amount of 00 g/m2.

A handle mounting substrate is adhered to the back surface of the sponge board shaped like the brush surface.

The substrate is a thin plate such as a synthetic resin plate, a metal plate, or a plywood plate, and its edges on both sides are slightly protruded from the sides of the sponge plate, and it is used by fitting and fixing it into the flange of the handle body, and is removed and disposed of after use. do it like this.

The embodiments shown in the drawings will be explained below.

In the perspective view of FIG. 1 and the side view of FIG. 2, the lower surface of the open-cell polyurethane sponge plate 1 includes a liquid-permeable portion 2 and an adhesive layer 3 with exposed sponge surfaces distributed over the entire surface thereof.
A large number of short fibers 4 are planted and adhered to the adhesive layer 3, and the lower surface of the sponge board serves as a brush surface 5, and the upper surface of the sponge board is provided with a handle of a thin vinyl chloride resin plate via the adhesive layer 7. The wearing board 6 has both side edges 8, 8' attached to the sponge board 1.
The sponge brush is made by sticking it slightly protruding from both sides of the brush.

The adhesive layer 3 on the lower surface of the sponge board 1 is shaped so that the liquid-permeable part 2 on the exposed surface of the sponge without adhesive has a striped pattern of alternating parallel straight bands, as shown in FIG. When this is done, the exposed surface of the sponge has a corten-like appearance that cannot be visually observed, and in this case, a particularly preferable coating operation can be achieved by carrying out a brush coating motion in a direction perpendicular to the straight line of the striped pattern.

Fig. 4 shows the case where the adhesive layer 3 has a lattice pattern, and the gaps between the lattice become the liquid passing parts 2. Fig. 5 shows the case where the adhesive layer 3 is distributed in small circular parts, and the small circles are squares. , a polygon such as a hexagon is also acceptable.

FIG. 6 is a perspective view of the above sponge brush used for coating work by fitting both side edges 8, 8' of the handle mounting board 6 into the engaging flanges 10, 10' of the handle body 9. Then, the sponge plate 1 is immersed in the coating liquid, pressed, and then withdrawn, so that the coating liquid is contained in the sponge plate 1 and the brush surface, and the coating work is performed.

The sponge brush of this invention can be produced at an extremely low cost, so even if it is removed from the handle or discarded after the application process is completed, compared to the conventional case where it is reused with thinner or detergent. It has the effect of being extremely easy to handle and can be painted without being economically disadvantageous.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway perspective view, FIG. 2 is a side view, and FIGS. 3, 4, and 5 are
FIG. 6 is a plan view showing different application patterns of the flocking adhesive formed on the lower surface of the sponge board, and FIG. 6 is a perspective view showing the sponge brush of the present invention fitted into the handle body. 1...Sponge plate, 2...Liquid passage part,
3... Adhesive layer, 4... Planted short fibers,
5... Brush surface, 6... Handle handle mounting board, 8, 8'... Side edge, 9... Handle body.

Claims (1)

[Scope of utility model registration request] An adhesive layer 3 is formed on one surface of a sponge board 1 made of open-cell foam so that liquid-permeable parts 2 with exposed sponge surfaces are distributed over the entire surface, and a large number of short fibers 4 are applied to the adhesive layer 3. It is planted as a brush surface, and the other surface of the sponge board 1 is provided with a handle mounting board 6.
A disposable painting sponge brush is characterized in that the two edges 8, 8' are glued together so that they slightly protrude from both sides of the sponge plate 1.