JP2000120256A - Method and tool for corner making working in rimless tatami-mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To same man-hour by cutting and simultaneously welding a tatami-mat being folded longitudinally laterally at four corners of a tatami-mat basement at the superimposed parts of a rear surface or a side surface of the tatami-mat basement. SOLUTION: The matting of a tatami-mat 1 is covered on a tatami-mat basement 1 to then be folded along the end part of the tatami-mat basement in the longitudinal direction of a rush. In this state, an unfolded side is folded, and overlapped parts are folded, so that a left upper part of a broken line 3 becomes an overlapped part. While being cut along the broken line 3, the matting is welded; namely, while the warp (cotton yarn) and the weft (imitation rush) are cut and welded at the same time with the overlapped opposite sides, after that, they are compressed to be flattened to some degree before being cured completely. In this manner, since a plastic-made imitation rush can be cut and welded simultaneously, work can be made simple and prompt, and parts of the overlapped matting can be removed accurately without requiring rush-fraying prevention work in particular, thereby precluding the rear surface or side surface of the tatami-mat from being different in its thickness, and also preventing interstices caused by this.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a tool for making corners in a tatami-less tatami mat.

[0002]

2. Description of the Related Art A tatami mat is manufactured by fixing (sewing) a tatami mat to a tatami floor. Therefore, naturally, the tatami mat is generally cut out larger than the tatami mat floor, an extra portion is folded back or back, and the folded portion and the front surface are sewn.

[0003] In a normal tatami mat with an edge, the side to be edged (the end in the longitudinal direction) is cut to the same size as the tatami floor, so that there is no folded portion. Therefore, the folded portion is only the side without the edge. Therefore, the folded portion of the tatami mat does not overlap on the side surface or the back surface of the tatami floor. However, in the case of a borderless tatami that does not have a border, it is necessary to fold both the vertical and horizontal sides. If not folded, the cut edges of the tatami mat will be visible from the surface, making it very unsightly.

[0004] Since folding is performed from both sides, an overlapping portion of the tatami table always occurs there. If sewn with the overlap, the portion naturally becomes thicker, and when the tatami is inserted, a gap is formed in other portions. Therefore, conventionally, the tatami manufacturer cut and sewed the overlapping portion.

[0005]

A conventional tatami mat using natural rush can be cut relatively easily with a cutter or a tatami knife. However, this cutting is difficult in the case of a plastic imitation rush which is being frequently used recently. For example, it is difficult to cut straight, and it is not easy to use scissors because it is made of plastic and has a certain thickness.

[0006] Therefore, manufacturing a borderless tatami mat with a plastic imitation rush was a very laborious operation.

[0007] Furthermore, if the end of the tatami mat is cut and left as it is, the rush will come off (fray) from the warp yarns, and it is necessary to take measures to prevent this. This was also troublesome.

[0008]

In view of the above situation, the present inventor has completed the working method and the working tool of the present invention as a result of intensive studies. There is a corner-making process to make a tatami mat woven from plastic imitation rushes into a borderless tatami mat. The point of heat fusion at the same time as cutting off the overlapping part with
The processing tool has a blade capable of cutting a thread, a curved portion capable of sufficiently holding heat and thermally cutting and heat-sealing plastic, and a substantially flat pressing portion.

The imitation plastic rush is a plastic molded to a thickness of about natural rush.
The molding method does not matter. For example, if it is a simple one, it may be a simple tubular body, a spirally wound tape-like body, a rod-like one, or the like.

[0010] Among them, the following, which the applicant has filed and has obtained a patent, are preferable. By passing a tape-shaped body made of a thermoplastic resin stretched in the longitudinal direction through a heating member forming a narrow gap, irregularly convergent formation is performed, and a fused film is formed on the surface. . This is very close to natural rush, because the tape is randomly inserted into the inside, there are voids, the surface is hardened to some extent, and pores are also present.

The tatami table referred to here is not limited in its weaving method. It may be a dragon algae, a normal item or a measure, or a weaving method not found in conventional tatami mats.

The borderless tatami mat is a tatami mat without an edge as described above, and is conventionally used frequently in a judo hall, a kimono exhibition hall, a hall, and other places. However, the shape is not limited to a conventional rectangle or square, and may be another shape.

[0013] The corner making process means that the folded portion of the tatami surface is fixed to the tatami floor at the four corners.
Refers to operations such as preventing fraying and fixing to tatami floors.

The overlapping portion on the back side of the tatami floor of the tatami mat folded vertically and horizontally always overlaps at the four corners when a small plate or the like is wrapped with large paper or the like. We say this overlapping part.
However, this is what is usually called thin tatami. This is because the difference between the size of the tatami floor and the size of the tatami floor cannot be absorbed by the side surfaces of the tatami floor and reaches the back surface. In the case of a thick tatami floor, the tatami floor does not reach the back surface, so that there are overlapping portions on the side surfaces. In the present invention, either may be used.

The present invention is a method for removing and fixing an overlapping portion of a tatami table caused by folding, and there is no problem in a folding method, an overlapping place, and an overlapping shape. That is, it can be folded in any way.

[0016] The fusion at the same time as cutting means that the warp yarn (cotton yarn or the like) and the weft yarn (imitation rush) of the tatami mat are cut and fused simultaneously with the mating side. Thus, the excess overlapped portions are deleted, but the remaining portions are fused together. Of course, it does not mean exactly at the same time in terms of time, but means that it is performed in one process. Actually, there is a time lag on the micro scale such as cutting of the warp yarn, thermal cutting of the rush, fusion, etc. In some cases. This not only prevents the folded portion from opening, but also prevents the individual rushes from fraying.

Next, the processing tool will be described. The processing tool of the present invention has a blade for cutting with sharpness, a portion for cutting by heat, and a portion for pressing. Of course, since the blade is also heated, the blade may be cut to some extent or thermally fused to some extent. The blade is sharp like a normal razor or kitchen knife, and is mainly for cutting warp yarn such as cotton yarn. This is because it is difficult to cut a thread such as a cotton thread with a simple heating iron trowel.

The curved portion is not sharp but has a tapered shape in a curve, has a certain heat capacity, and is capable of thermally cutting and heat-sealing plastic. It's like a soldering iron.

The pressing portion is for flattening the portion to some extent after the heat-sealing. Therefore, the lower part is almost flat. Of course, this part is also heated. The above three parts may be provided in any order, and may be provided as a whole linearly or arcuately.

In one example of use, first, a curved portion is pressed against a tatami surface while being pulled, and a plastic rush is thermally cut. When the warp yarn such as cotton yarn remains, it is cut by a blade and finally the whole is pressed flat by a pressing portion.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the working method of the present invention will be described in detail with reference to an embodiment shown in the drawings. FIG. 1 is a process chart showing how to fold a tatami table in the processing method of the present invention. In this example, the tatami floor is relatively thick, and the tatami mat does not reach the back side. FIG. 1A shows a state in which a tatami table 2 is put on a tatami floor 1 and bent along the end of the tatami floor in the longitudinal direction of the rush. (B) shows a state where the side not bent in (a) is bent in this state. (C) is where the overlapping part is folded. The upper left part from the broken line 3 is an overlapping part.

Along the broken line 3, while cutting the tatami mat,
It just needs to be fused. After fusion, it is desirable to press in order to make the thickness as uniform as possible. (D)
Is a place where after fusion, it is pressed to a certain level before it is completely cured. This is the end.

FIG. 2 is an example showing a folding method different from that of FIG. This is an example in which the tatami mats do not overlap on one side wall as shown in FIG. Even in such a case, the overlapping portion 4 may be cut off as in FIG.

FIG. 3 shows an example in which the tatami mat floor 1 is thin and the tatami mat 2 wraps around the back surface. In such a case, it is sufficient to overlap the intermediate portion as in FIG. 2 and cut off an unnecessary portion from that portion.

FIG. 4 is a perspective view showing an example of the processing tool 5 of the present invention. In this example, a blade portion 6 is provided at a front end portion, a curved portion 7 is provided at an intermediate portion, and a pressing portion 8 is provided at a rear end portion, and a cutout 9 is provided between respective members. And they are arranged side by side in an arc shape as a whole. In addition, it has a structure like a soldering iron that can be heated as a whole, and the temperature can be raised to a temperature at which the plastic can be melted. However, the blade may be at a low temperature, and the pressing portion is preferably at a lower temperature than the curved portion. In addition, the notch 9 also serves as an escape portion for the melted plastic.

[0026]

The working method and the working tool of the present invention have the following advantages. Since the imitation plastic rush is fused at the same time as cutting, the operation is very simple and quick. For this reason, it is not necessary to separately perform the work of preventing the rubbing of the rush. Since the portion where the tatami mats overlap can be accurately removed, there is a difference in thickness on the back and side surfaces of the tatami mats, and there is no gap due to these differences. According to the processing tool of the present invention, the work of fusing simultaneously with cutting can be easily performed. It is also very convenient because it is possible to cut a warp such as cotton yarn and a plastic rush with different properties in one step.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing a process of folding a tatami table at the time of processing according to the present invention.

FIG. 2 is a partial perspective view showing how to fold a tatami table during processing according to the present invention.

FIG. 3 is a partial perspective view showing another folding step of the tatami table at the time of processing according to the present invention.

FIG. 4 is a perspective view showing an example of the processing tool of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tatami floor 2 Tatami table 3 Dashed line 4 Overlapping part 5 Processing tool 6 Blade part 7 Curved part 8 Pressing part 9 Notch

Claims (3)

[Claims] 1. A corner-making method for making a tatami mat woven from a plastic imitation rush into a borderless tatami mat. A corner making method in a rimless tatami mat, characterized in that overlapping portions are cut off and heat-sealed at the same time. 2. After cutting one side of the overlapping portion in advance,
2. The method according to claim 1, wherein the heat sealing is performed simultaneously with the cutting. 3. A corner making tool in a rimless tatami mat having a blade capable of cutting a thread, a curved portion capable of sufficiently holding heat and thermally cutting and heat-sealing plastic, and a substantially flat pressing portion.