JPH10408A - Coating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance an appearance grade and long-term durability, when a substrate is placed on a feed device to be coated with a resin, by mounting a clearance adjusting member on the upper part of the substrate and mounting a barrier member on the upper part thereof. SOLUTION: A clearance adjusting member setting the thickness of a resin to uniformize a resin coating amt. is provided on a substrate 2 and a barrier member 4 slidable up and down by a spring 5 is mounted thereon through the hard linear matter of the clearance adjusting member. When the substrate 2 has thickness irregularity or warpage, the barrier member 4 is slid up and down by the spring 5 through the hard linear matter 6 of the clearance adjusting member to control the coating amt. of the resin 9 supplied from a hopper 8 and the resin 9 is uniformly applied to the substrate 2. In order to keep the resin 9 on the substrate 2 constant, the hard linear matter 6 of the clearance adjusting member is shifted at each time when definite quantity processing is performed and a clearance is again kept constant and the coating amt. of the resin 9 is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus useful for manufacturing a building material in which a substrate, such as a tile, having irregularities on the back surface such as a tile is integrated with an adhesive.

[0002]

2. Description of the Related Art In general, spraying apparatuses and roll coaters are widely used as resin coating apparatuses for building materials. However, in the case of a spray device, the application amount is 10 to 10.
It is suitable for application of a small amount of 200 g / m ² , but is suitable for adhesion of tiles and the like because it is necessary to apply a large amount of resin in order to apply a tile or the like having irregularities on the back surface to the substrate. Absent. In addition, the roll coater is also a method of transferring the resin adhered to the roll to the substrate, so it is suitable for small-quantity application like a spray device, but it is used for applying tiles with irregularities on the back side to the substrate. Is not suitable because a large amount of resin must be applied. Further, when the substrate has warpage, there is a disadvantage that a difference occurs in the amount of resin transferred within the substrate and coating unevenness occurs.

On the other hand, a roll knife coater is well known as an apparatus for applying a large amount of resin of 500 g / m ² or more, and the amount of applied resin can be freely adjusted by adjusting a clearance between a substrate and a roll. However, if the substrate has uneven thickness or the substrate has warpage, there is a partial difference in clearance, which results in uneven coating, resulting in a loss of quality. In particular, when applying an adhesive to the substrate and bonding the tiles, unevenness in the thickness of the adhesive creates a portion where the adhesive is not filled on the tile back foot, which may cause tile peeling or void space. As a result, water infiltrates into the rubber and the durability is significantly impaired.

[0004]

As described above, in the conventional coating apparatus, a material having irregularities on the back surface such as a tile is adhered to a substrate having uneven thickness or warpage to provide a building material having high quality and excellent long-term durability. Was difficult to manufacture.

An object of the present invention is to solve the above-mentioned problems and to provide a product having excellent appearance quality, high quality and excellent long-term durability.

[0006]

Means for Solving the Problems The present inventors have made intensive studies to achieve the above object, and as a result, put a substrate on a transfer device and apply a resin to the upper portion of the substrate in an apparatus for applying resin. The present inventors have found that a product having excellent appearance quality, high quality and excellent long-term durability can be obtained by a coating device having a clearance adjusting member and a shielding member mounted thereon, and the present invention has been achieved.

That is, according to the present invention, in a device for applying a resin on a substrate placed on a transfer device, a member for adjusting clearance is mounted on the substrate, and a shielding member is mounted on the member. It is.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in more detail.

The present invention relates to an apparatus for placing a substrate on a transfer device and applying resin. As the transfer device in the present invention, a transfer device capable of continuously moving a substrate is preferably used. In such a transfer device, the phase determination portion of the preceding substrate overlaps with the phase determination portion of the subsequent substrate, the width of the substrate is made uniform, and the substrate can be moved continuously. Further, such a transporting device preferably includes, but is not limited to, a motor-driven continuous belt conveyor or a roller conveyor. The line speed of the transfer device is, for example, 0.1 to 30 m.
/ Min.

In the present invention, the substrate is a metal plate,
Plywood, resin board, fiber reinforced cement substrate, preferably fiber reinforced cement substrate, but not limited thereto. Further, the resin of the present invention is, for example, an epoxy resin,
Examples include, but are not limited to, acrylic, silicon, urethane, and rubber.

The member for adjusting the clearance in the present invention sets the thickness of the resin and makes the applied amount of the resin uniform, and is preferably a hard linear material or a hard protrusion.

This hard linear object is made of metal, ceramic or the like, and is movable in the length direction. Above all, preferably, a metal wire such as a stainless wire or a piano wire is used as the hard wire. The metal linear object has advantages that it is hard to be broken due to its ductility, and that it is easily rounded and easily attached. Furthermore, when the hard linear material is worn by friction with the substrate during continuous operation, a metal linear material that can be easily moved in the length direction is preferable. The clearance is kept by the wire diameter of the hard linear object, and the resin application amount can be determined.

The hard projection can be moved up and down, and is preferably used integrally with a knife-type shielding member. It is desirable that the hard protrusion be formed with a groove and move up and down by adjusting the screw. More preferably, the knife-shaped shielding member moves up and down at the same time as the vertical movement of the hard projection, the clearance is kept, and the resin application amount is determined. Therefore, it is desirable to keep the clearance by adjusting the screw and control the resin application amount according to the wear of the tip of the hard protrusion.

The shielding member can be slid up and down by a spring or the like via a clearance adjusting member so as to follow the thickness unevenness and warpage of the substrate. The shape of the shielding member is not particularly limited, but is preferably a plate shape or a rod shape. Knife type as plate-shaped shielding member,
The rod-shaped shielding member is preferably a roll type. The strength of the spring can be arbitrarily adjusted with screws. The diameter of the roll and the thickness of the knife are not particularly limited. As the material of the shielding member, any of metal, resin, ceramic and the like can be used.

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

FIG. 1 is a perspective view of a coating apparatus equipped with the hard linear object of the present invention, and FIG. 2 is a side sectional view of the coating apparatus. FIG. 3 illustrates a side cross-sectional view of a coating apparatus provided with a hard protrusion.

As shown in FIGS. 1 and 2, this coating apparatus continuously feeds a substrate 2 having a settle 3 onto a transfer apparatus 1 while engaging the same. On the substrate, the resin 9 supplied from the hopper 8 is controlled by the shielding member 4 to which the spring 5 is mounted via the hard linear material 6 of the clearance adjusting member, and is uniformly applied on the substrate. If the substrate 2 has uneven thickness or warp, the hard linear object 6
, The shielding member 4 equipped with the spring 5 slides up and down, and the resin is uniformly applied on the substrate. In order to keep the amount of resin on the substrate constant, the hard linear object 6 is displaced every time a predetermined amount is processed, the clearance is kept constant again, and the amount of resin applied is controlled.

On the other hand, in the case of the coating apparatus equipped with the hard projections 7 shown in FIG. 3, the hard projections 7 are used integrally with the rod-shaped object 4 on which the spring 5 is mounted. The clearance is set by adjusting the screw of the hard projection 7, and when the substrate 2 has uneven thickness or warp, the amount of resin applied is controlled by simultaneously moving the shielding member 4 up and down.
Here, each time the hard protrusion 7 is processed in a fixed amount, the clearance is kept by adjusting the screw to control the resin application amount.

[0019]

EXAMPLES The present invention will be described with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

EXAMPLE On a transfer device capable of continuously moving a substrate at a line speed of 3 m / min, a 455 mm wide, 1820 mm long,
Ten pieces of fiber reinforced cement substrates each having a certain side were continuously introduced while engaging each other. The thickness of this substrate is a minimum of 11.6 mm and a maximum of 12.5 mm, and is 0.9 m
m uneven thickness. Up to 2.8m long warp
m.

On the above fiber-reinforced cement substrate, a piano wire having a wire diameter of 1.1 mm and a length of 500 mm was placed in a width direction of 4 mm.
The books were arranged at equal intervals, and a knife-type shielding member made of SUS was attached. Next, a resin prepared in advance was quantitatively supplied from a hopper and applied to ten substrates. The resin application amount is 1292 to 1338 g / sheet (1576 to 1632 g
/ M ² ), and the difference between the maximum value and the minimum value is 46 g.
/ Sheet. Furthermore, after curing, cut the cross section of the board,
As a result of measuring the resin film thickness at 10 locations with a stereoscopic microscope, the thickness was in the range of 0.72 to 0.77 mm, and a resin film having a substantially uniform film thickness was obtained.

Comparative Example A roll knife coater was used to set the clearance to 1.
It was adjusted to 1 mm and applied to 10 substrates under the same conditions as in the example except for the above. The resin application amount is 1208 to 1460 g / sheet (1
473 to 1780 g / m ² ), and the difference between the maximum value and the minimum value was 252 g / sheet. Furthermore, after curing,
The cross section of the substrate was cut, and as a result of measuring the resin film thickness at 10 places with a stereoscopic microscope, the thickness was 0.60 mm minimum and 0.1 mm maximum.
It was 92 mm, and the variation in the resin film thickness was large.

[0023]

According to the coating apparatus of the present invention, a resin can be uniformly applied to a substrate having uneven thickness or warpage. In particular, a tile or a stone material is integrated with a fiber reinforced cement board by a resin. Useful for manufacturing building materials. The obtained product has excellent appearance quality and excellent long-term durability. Moreover, since the resin can be applied uniformly,
Less resin loss and economical.

[Brief description of the drawings]

FIG. 1 shows a perspective view of a coating apparatus of the present invention.

FIG. 2 is a side cross-sectional view of a continuous coating apparatus equipped with a hard linear object.

FIG. 3 is a side sectional view of a continuous coating apparatus provided with hard projections.

[Explanation of symbols]

 1: Transfer device 2: Substrate 3: Substrate determination 4: Shielding member 5: Spring 6: Hard linear object 7: Hard protrusion 8: Hopper 9: Resin

Claims (13)

[Claims] 1. An apparatus for placing a substrate on a transfer device and applying a resin, wherein a coating member for clearance adjustment is mounted on an upper portion of the substrate, and a shielding member is mounted on the upper portion. 2. The coating apparatus according to claim 1, wherein the shielding member has a plate shape. 3. The coating apparatus according to claim 1, wherein the shielding member has a rod shape. 4. The coating apparatus according to claim 1, wherein the shielding member is slidable up and down. 5. The coating apparatus according to claim 1, wherein the clearance adjusting member is a hard linear material. 6. The coating apparatus according to claim 1, wherein the clearance adjusting member is a hard protrusion. 7. The coating apparatus according to claim 5, wherein the hard linear object is movable in a length direction. 8. The coating apparatus according to claim 6, wherein the hard projection is movable up and down. 9. The coating apparatus according to claim 1, wherein a transfer device capable of continuously moving the substrate is used. 10. The coating apparatus according to claim 1, wherein the conveying device is a motor-driven belt conveyor. 11. The coating device according to claim 1, wherein the transfer device is a motor-driven roller contact. 12. The coating apparatus according to claim 1, wherein the hard linear object is a metal linear object. 13. The coating apparatus according to claim 1, wherein the substrate is a fiber reinforced cement substrate.