JPH0675530A - Production of signal net - Google Patents

Abstract

PURPOSE:To provide the simple process for production of the lightweight signal net on which a wind pressure is not applied. CONSTITUTION:This signal net has a net 3, signal bodies 5 consisting of characters, marks and other three-dimensional objects and cords 7. These signal bodies 5 consist of a foamed urethane resin and are enclosed by and fitted to the net 3 in tight contact with the filaments thereof. The signal net is mounted by the cords 7. The net 3 and the cords 7 are made of nylon. The signal net having the wind pressure resistance equal to or higher than the wind pressure resistance of the conventional signal nets is easily produced only by the three stages of spraying synthetic resin fluid into the melding flask of the signal bodies 5 placed on the net 3 and removing the moldings from the molding flask after curing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a marker net for publicity recognition.

[0002]

2. Description of the Related Art Conventionally, a sign posted on an iron tower or the like is a board made of a wooden board, a woven cloth, an iron board, a synthetic resin board, or the like, and a colored material is drawn on the board. The marker is attached to a steel tower or the like with bolts or the like. In addition, in Japanese Utility Model Laid-Open No. 59-192194, cut-out sheets such as letters, figures or symbols made of a water-resistant sheet are attached to both sides of an abrasion-resistant mesh sheet having abrasion-resistant strings stretched around it at the same time. The wind pressure resistant hanging curtain made up of is open to the public. The feature of this hanging curtain is that since the mark body is formed on the mesh sheet, the wind escapes from the mesh sheet, so that the wind pressure is not applied, and the material is lightweight, so that the overall load is small.

[0003]

However, in this hanging screen, two sheets of the same mark body such as letters, figures or symbols made of a water resistant sheet are cut out, and one sheet is placed on the work table.
Place the abrasion-resistant reticulated sheet on top of this and another sheet on top of it. The same sheet is placed on the upper and lower sides of the net-like sheet so that the patterns are matched with each other and placed at a predetermined position, the adhesive is applied, and the upper and lower sheets are pressed to be attached. In this way, the manufacturing process is multi-step and there is a difficulty in matching the upper and lower patterns. The object of the present invention is to provide a method for manufacturing a marking net which overcomes these drawbacks.

[0004]

Therefore, the method for manufacturing a marker net of the present invention is a three-dimensional object of characters and marks themselves fixed to the net by wrapping the filament constituting the net on the net. In the production of the mark body consisting of, the first step of installing the mold of the mark body on the net, the second step of spraying the synthetic resin of the fluid into the mold, the curing of the synthetic resin It is characterized by the third step of removing the rear formwork.

[0005]

[Function] The manufacturing method is such that the mark frame is simply placed on the net by placing the mark frame on the net and spraying a synthetic resin of a fluid such as urethane foam elastomer into the mold. Can be made. That is, in this method, since the synthetic resin of the fluid is sprayed, the synthetic resin of the fluid wraps around and adheres to the filament of the net, and the filament is wrapped into the state to be hardened. Since it is formed, it is possible to easily make a mark body that is in close contact with the net simply by spraying a fluid synthetic resin.

[0006]

EXAMPLE An example of a method of manufacturing the marker net 1 will be described below. FIG. 1 shows a marker net 1 completed by this embodiment. This marker net 1 is to display a message "Be careful of electric wires" on the electric power tower.
The marker net 1 includes a net 3, a mark body 5, and a string 7. Net 3 is made of nylon and the grid size is 2 sides
It has a 0 mm square shape and its filament is about 3 mm in diameter.
And supports this mark body 5. The mark body 5 is made of urethane foam resin, and the urethane foam resin is a letter,
It exists only in the three-dimensional object of the mark itself, not in the ground part. The mark body 5 encloses the net 3 as shown in the sectional view of the marker net 1 in FIG. 2D, and is in close contact with each filament of the net 3. The string 7 is made of the same nylon as the net 3, and the sign net 1 is tied and fixed to the steel tower.

The manufacturing process of the marker net 1 will be described.
First, this manufacturing process includes the following three processes as shown in FIGS. 2 (A), 2 (B) and 2 (C). The first step (A) is shown in FIG.
As shown in (A), it is a step of installing the mold 11 manufactured by the design of the marker net 1 on the net 3. The formwork 11 is made of wood and has a through hole 13 in the shape of the mark body 5 which is hollowed out. The net 3 is made of nylon, has a square shape with one side of 20 mm, is made of a material having a diameter of about 3 mm, is cut according to the size of the design, and has a mounting string 7 attached thereto.

The prepared net 3 is placed on the flat plate by pulling the net 3 left and right while maintaining a slight clearance. The form 11 is installed on it according to the design. The mold 11 is cleaned in advance and a release agent is applied if necessary. In the second step (B), as shown in the sectional view of the form 11 and the net 3 in FIG. This is a step of forming the mark body 5 by spraying with the gun 15. As an example of this fluid synthetic resin, there is a two-component urethane foam elastomer. After spraying this elastomer, if it is left to stand, it will naturally wrap around the net, and then it will increase in thickness by the foaming reaction and cure. When it is desired to increase the wall thickness, the desired thickness can be obtained by spraying the elastomer after curing and repeating this process. The curing time depends on the type of synthetic resin, but for this elastomer it is 1
It becomes tack free in about 0 seconds.

The third step (C) is a step in which the mold 11 is removed, the mark body 5 is finished, and the marking net 1 is completed, after the sprayed elastomer is cured. The mold 11 is removed, and the urethane foam mark body 5 thus formed is deburred as necessary, and unnecessary portions are cut off.
It is completed on the net 3 as shown in (C).

The mold material used here may be synthetic resin or metal. Further, since the mold 11 is an open type, there is an advantage that the manufacturing cost can be made very low. The material of the mark body 5 may be a synthetic resin that can be sprayed on the mold 11 with a fluid and naturally wraps the net and hardens to solidify. For example, it is a foam type synthetic resin such as a polyvinyl chloride paste in which polyvinyl chloride powder, a plasticizer and a foaming agent are mixed. In addition, a thermosetting resin such as an epoxy resin or a thermoplastic resin such as polyethylene or polypropylene can be used. In the case of a thermoplastic resin, it may be used as a high temperature fluid. Although a synthetic resin of a fluid can be used, the foamed synthetic resin is lighter in weight, has a better wraparound property around the filament of the net, and is three-dimensional and has an appealing effect.

The material of the net 3 is vinylon or PET.
(Polyethylene terephthalate), metal, etc. The characteristics of synthetic fibers, metals, synthetic resins, etc. used for the net 3 and the mark body 5 are tough, have little expansion and contraction, and have strong weather resistance, impact resistance, abrasion resistance, water resistance, and light weight. Good.

The marking net 1 manufactured by this method is
Since the mark body 5 is a three-dimensional object of characters and the mark itself, and the ground portion is not subjected to wind pressure, only a very small wind pressure is received as a whole. Therefore, it suffices to attach the lightweight marker net 1 to the steel tower with the string 7.

Further, in order to make the posted characters clear, for example, by making the characters red and the net green, or by making the characters fluorescent color, the posting effect is further enhanced. In addition, the marker net 1 is a painting robot that places a mold 11 for characters and marks on the net 3 to teach a spray path along the mold 11, and then sprays a synthetic resin of a fluid by repeating the trace mode. You can also do it. Further, if the spray is less scattered, the accuracy is good, and if the fluidity of the synthetic resin and the curing speed are compatible, the marking robot 1 can be used to draw characters, marks, etc. without the frame 11 to manufacture the marking net 1. You can also

[0014]

The method for producing the marking net of the present invention comprises three steps such as spraying a synthetic resin of a fluid into a mold placed on the net, and curing and then demolding. Therefore, a product having a wind pressure resistance equal to or higher than the conventional one can be easily manufactured.

[Brief description of drawings]

FIG. 1 is an overall explanatory view of a marker net.

2A and 2B are explanatory views of the manufacturing process, FIG. 2A is an explanatory view of installing a mold on the net in the first step, and FIG. 2B is a cross-sectional view of the mold and net in the second step. And an explanatory view of a process of spraying a synthetic resin of a fluid by a spray gun,
Fig. 2 (C) is an explanatory view of a state in which the formwork is removed in the third step and the mark body is completed on the net, and Fig. 2 (D) is a cross-sectional view of the marker net, showing the structure of the mark body and the net. FIG.

[Explanation of symbols]

1 ... Sign net 3 ... Net 5 ...
Mark body 7 ... String 11 ... Formwork 13 ... Through hole 15 ...
・ Spray gun

Claims (1)

[Claims] 1. A method for producing a mark body composed of three-dimensional objects of characters and marks fixed to the net by wrapping a filament constituting the net on the net, comprising: A first step of installing the mold on the net, a second step of spraying a synthetic resin of a fluid into the mold, and a third step of removing the mold after curing the synthetic resin,
A method for manufacturing a marker net, which is characterized by: