JPH047705B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for filling recesses in plywood with filler.

Conventionally, when filling concave parts such as chips and knotholes existing on the surface of plywood with filler such as putty to perform local repairs, filling materials, such as those shown in Fig. 1, are relatively strong. A method is employed in which a spatula-shaped filling member 4 is used to press a lump of the filler 3 into the recess 2 of the plywood 1, and to press-fit the filler 3 into the recess 2 by squeezing.

According to such a method, since the filler hardly adheres to any part other than the recess, the cost required for filling is kept to the minimum necessary level, but on the other hand, the filler filled in the recess is a spreader/diluent. As the material evaporates, the weight decreases, and as shown in Figure 2, some parts may become depressed and harden, which may cause various problems in subsequent secondary processing steps. There were flaws.

For this reason, the current situation is to wait for the filler to harden, inspect for wear, and, if necessary, refill the hollow area with filler in the same manner as above to flatten the area. , which is extremely inefficient and has poor productivity, and is a negative cause that hinders the rationalization of repair processes in plywood factories.

Therefore, in order to avoid the above-mentioned problem, for example, as illustrated in FIG. A method of filling extra filler material 3 was tried, but in this case, it was extremely difficult to fill only the recesses with the appropriate amount of filler, and it was difficult to fill the recesses with an excessive amount of filler material. Not only is it difficult to avoid adhesion and the amount of filler used tends to increase more than necessary, but also the filler that is simply filled has extremely low adhesion to the plywood due to almost no pressure being applied. The filler was poorly and incompletely filled, and the filler was extremely unsuitable for practical use, as the entire filler was likely to be missing when the excess portion was removed after curing.

Therefore, as illustrated in FIG. 4, the filling material 3 is press-fitted into the entire concave portion 2 by pressing the filling material 3 filled as described above using a pressing member 6 having a smooth pressing surface 6a. We also tried a method to achieve this, but in this case, the surplus part after curing,
In particular, the filler that adheres to areas other than the recess is firmly connected to both the filler filled in the recess and the surface of the plywood, making it difficult to remove by sanding or other removal methods. Since it requires a great deal of effort and expense, it was somewhat unsuitable for practical use.

The present invention was developed in order to eliminate the drawbacks of the conventional methods and experimental methods.The present invention fills the recesses of plywood with a somewhat larger amount of filler, and presses the filler in a very special form to form the recesses. By adopting the policy of press-filling the entire area, we can minimize the increase in costs required for filling and removal, and eliminate the need for refilling as the filler wears down, thereby improving the repair process at plywood factories. The aim is to streamline the process.

The present invention will be described in detail below along with an example of implementation illustrated in the drawings.

That is, the method of filling the filler according to the present invention is to fill the recess 2 of the plywood 1, as illustrated in FIG.
The filling material 3 is filled to a size somewhat larger than the volume of the recess 2, and a large number of small recesses 8 are bored in the pressing surface 7a that contacts the surface of the plywood 1, as illustrated in FIG. Using the shaped pressing member 7,
By once pressing the filler 3, the filler 3 is press-fitted into the entire recess 2, and a large number of small protrusions 3a made of the filler 3 remain at least on the surface portion of the recess 2, and then For example, the seventh
As illustrated in the figure, after the filler 3 has hardened, the excess portion is removed by sanding or other removal means (not shown) and flattened.

According to such a method, the filling material filled in the recess is pressurized as it is pressed by the pressing member, so that it is press-fitted into the entire recess and firmly adheres to the plywood, so that the excess material after curing is removed. Not only will it not be missing when parts are removed, but even if it is lost due to volatilization of the extender, diluent, etc., the loss is offset by the small protrusions and formed on the surface of the recess. Many small protrusions remain even after flattening, so conventional refilling is unnecessary.
Although there are some gaps between the small protrusions, there is no practical problem considering the characteristics of local repair, and the repair can be completed extremely effectively.

On the other hand, due to the pressing by the pressing member, a part of the filled filling material is pushed out to a part other than the recessed part,
As a result, the surface of the plywood is pressed in the form of small protrusions, but since the small protrusions are also attached to the pressing member, they are relatively difficult to remain on the surface of the plywood when the pressing member is separated, and even if Even if everything remains,
After curing, it is only attached to the surface of the plywood or is only slightly connected to the filler filled in the recesses, so it is extremely difficult to remove it by sanding or other removal methods. It's easy and
The filling material does not require a lot of effort and cost, and it is sufficient to fill the filling material only enough to leave small protrusions on the surface of the recess, and only a relatively small amount is required. The cost required for this does not increase significantly compared to the conventional method, and filling can be performed at a lower cost overall.

Note that the pressing member used in the filling method according to the present invention is not limited to the shape shown in FIG. 6; for example, as shown in FIG. Hemispherical, conical, pyramidal,
Whether it is a roll-shaped pressing member 9 with a large number of small depressions 8 of an appropriate shape such as a columnar shape, or a semicylindrical pressing member 10 as shown in FIG. The pressing member may have any shape as long as it is capable of pressing and leaves a large number of small protrusions made of the filler on at least the surface portion of the recess when separated. There is no problem, and the depth of the depressions can be set appropriately by taking into account the loss of filler material, but in any case, from the viewpoint of reliability of repair, the partition walls formed between each depression should be compared. It is preferable to make the area narrower, and if the thickness is approximately the same as or smaller than the thickness of the many conduits existing on the surface of the plywood, it is extremely effective because there will be almost no difference between the area and the unrepaired area.

Of course, the filling method according to the present invention is not limited to the embodiment in which the filler is filled in advance into the recess and then pressed, as illustrated in FIGS. 5 and 6, but the method shown in FIG. As is clear, it is also possible to apply the filler in advance to the pressing surface of the pressing member in a size slightly larger than the volume of the recess, and to carry out filling of the recess and pressing at the same time. ,
Alternatively, as is clear from FIG. 8, depending on the relative shape of the pressing member and the recess, it is possible to perform the pressing while filling the recess. In addition to the embodiment in which the filler is poured out from the tube-shaped filler storage member that stores the filler inside, as illustrated, there are various other embodiments, such as a mode in which an appropriate amount is scooped out from the container with a spatula, fingers, etc., and pressed against a recess or a pressing member. It can be implemented in various ways.

In addition, there is no problem in removing the filler material stuck in the depression of the pressing member by using a brush, etc., as necessary.
If necessary, at least the surface of the pressing member may be
It may be made of a material with excellent release properties such as tetrafluoroethylene resin to reduce adhesion of the filler.

In addition, as a removal method for removing the excess portion after the filler has hardened, sanding is preferable than cutting with a knife or the like because it can flatten the surface more stably. It is even more effective if the plywood is filled with plywood and, after hardening, the surface of the plywood is also finished and flattened by sanding, since there is no need for a separate process for removal.

As is clear from the above, according to the filling method of the present invention, local repairs can be carried out extremely effectively, and the repair process at a plywood factory can be streamlined. The implementation effect in the plywood factory is extremely large.

[Brief explanation of drawings]

The drawings are for explaining the present invention, and FIGS. 1 and 2 are process explanatory diagrams for explaining the steps of the conventional method, and FIGS. 3 and 4 are process explanatory diagrams for explaining the steps of the experimental method. 5 to 7 are process explanatory diagrams for explaining the steps of the pressurizing method according to the present invention, and FIGS. 8 and 9 are process explanatory diagrams for explaining the steps of the pressurizing method according to the present invention. It is a process explanatory diagram for explaining an embodiment. 1... Plywood, 2... Recess, 3... Filler, 3a
...Small protrusions of filler, 5...Tube-shaped filler storage member, 6...Press member used in experiment, 7,
9, 10...Press member used in the present invention, 8...Small depression.

Claims (1)

[Claims] 1 Filling the concave portion of the plywood with a filler material that is somewhat larger than the volume of the concave portion, and using an appropriately shaped pressing member that has a number of small depressions in the pressing surface that comes into contact with the surface of the plywood, By pressing the filler once, the filler is press-fitted into the entire recess, leaving a large number of small protrusions made of the filler on at least the surface of the recess, and then removing any excess after the filler hardens. 1. A method for filling a concave portion of plywood with a filler material, characterized in that the portion is removed by an appropriate removal means and flattened.