JP2005349251A - Sheet for preventing scattering of coating mist and method of spreading the sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet for preventing scattering of coating mist which can prevent the scattering of a coating mist at a low cost, and of which the spreading work can efficiently be performed, and a method of spreading the sheet. <P>SOLUTION: The sheet for preventing the scattering of coating mist to be spread on the outer circumference of a mesh sheet 2 which is spread between adjacent vertical single pipes 1 erected with prescribed spaces to form scaffolds in a coating work site, consists of an unwoven fabric 3 which is formed to have a lateral width of two to six times plus 60-80 cm of the space between the vertical single pipes, and the adjacent unwoven fabrics 3 are spread in a state where both their ends overlap 30-40 cm with each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a paint mist scattering prevention sheet used at a building construction site of a building and a method for spreading the same.

  Conventionally, a curing mesh sheet made of a synthetic resin is usually spread on the outer periphery of a painting construction site to prevent work hazards and to prevent external scattering of paint mist and dust. However, since the mesh sheet has air permeability, a part of the paint mist and dust is scattered to the outside together with the air flow to cause an environmental deterioration problem, and the purpose of the curing mesh sheet is not sufficiently satisfied.

Accordingly, a mesh sheet for preventing paint mist from scattering has been developed in which a mesh-like body made of polyolefin resin is electretized to improve the efficiency of collecting paint mist and dust. This sheet consists of a resin composition in which 0.01 to 2 parts by weight of at least one selected from a phenol-based stabilizer, a sulfur-based stabilizer or a phosphorus-based stabilizer is blended with 100 parts by weight of a polyolefin-based resin. A mesh-like body formed from stretched yarn and having a coarse texture, and the surface of the mesh-like body is electretized by corona discharge treatment (see Patent Document 1).
JP-A-9-117699 (page 2)

  In the case of a sheet that collects paint mist using the electret phenomenon by utilizing the electrification phenomenon, the manufacturing cost of the sheet increases, and if there is a gap between the stretched sheets, the mist passes through the gap. It was a thing.

  Therefore, an object of the present invention is to provide a paint mist scattering prevention sheet that can prevent paint mist from scattering at low cost and a method for spreading the same.

  In order to achieve the above-mentioned object, the sheet of the present invention has vertical single pipes standing at predetermined intervals in a painting construction site, and mesh sheets are stretched between these adjacent vertical single pipes. It is a sheet for preventing paint mist from spreading on the outer periphery of the sheet, and is composed of a non-woven fabric having a width that is 2 to 6 times the interval between vertical single tubes plus 60 to 80 cm. Both ends are stretched with an overlap of 30 to 40 cm. In addition, the sheet is spread out on the outer periphery of the paint construction site by spreading a sheet for preventing paint mist from splashing. The formed mesh sheet is connected and stretched through eyelet holes, this is repeated as one unit, the outer periphery of the building is surrounded by the mesh sheet, and then the nonwoven fabric is laminated on the opposite surface of the mesh sheet not facing the building. In the step of stretching, the both ends of the nonwoven fabric are stretched across n units (n is 2 to 6) of the mesh sheet, leaving (60 to 80 cm) / 2 in the horizontal direction from the longitudinal single tube, The part (60 to 80 cm) / 2 is extended and overlapped with the end of the adjacent nonwoven fabric.

  The present invention relates to a paint mist that is provided with vertical single pipes that form a scaffold at a painting construction site at predetermined intervals, a mesh sheet is stretched between the adjacent vertical single pipes, and is stretched around the outer periphery of the mesh sheets. It is a sheet for preventing scattering, and is made of a nonwoven fabric whose lateral width is 2 to 6 times the interval between vertical single tubes plus 60 to 80 cm, and adjacent nonwoven fabrics are overlapped by 30 to 40 cm at both ends. Since the non-woven fabric prevents the paint mist from scattering and the ends of the non-woven fabric are overlapped, there is no gap between the sheets, and the prevention of scattering is ensured. Moreover, there is no need to electretize the sheet, and a sufficient effect can be achieved with an inexpensive non-woven fabric. In addition, a mesh sheet made of russell nets is formed on the opposing vertical single tubes of a predetermined width to form a scaffold, and connected and stretched through eyelet holes, and this is repeated as one unit, and the outer periphery of the building is surrounded by the mesh sheet. Next, in the step of spreading the nonwoven fabric on the opposite side of the mesh sheet that is not opposed to the building, both ends of the nonwoven fabric are left in the horizontal direction (60-80 cm) / 2 from the longitudinal single tube. The mesh sheet is stretched across n units (n is 2 to 6) of the mesh sheet, and its end (60 to 80 cm) / 2 is stretched so as to overlap with the end of the adjacent nonwoven fabric. The paint mist can be prevented from splashing from the gaps between the mesh sheet and the ventilation part of the mesh sheet, and the width of the nonwoven fabric is 2 to 6 times that of the mesh sheet plus 60 to 80 cm. Obtain.

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

  1 and 2, the vertical single pipes 1 of the scaffold assembled at the painting construction site are erected at a predetermined interval, currently 180 cm apart, and are formed with a Russell network between the vertical single pipes 1 facing the building side. The mesh sheet 2 is stretched (see FIG. 2). A paint mist scattering prevention sheet 3 made of a nonwoven fabric is stretched on the outer periphery of the mesh sheet 2, that is, the side opposite to the side facing the building. This sheet (nonwoven fabric) 3 is formed so that its lateral width is 2 to 6 times the interval between the vertical single tubes 1 plus 60 to 80 cm. In this embodiment, since the interval between the vertical single tubes 1 is 180 cm, the horizontal width is “180 cm × 3 + 60 cm”. The “multiple” is preferably 2 to 6 times from the viewpoint of work efficiency.

  The sheet (nonwoven fabric) 3 shown in FIG. 1 has a width of 600 cm (6 m) and a vertical length of 648 cm, and has eyelet holes 4 at the upper and lower portions of both ends, and 30 cm inside from both ends. In addition, five eyelet holes 4 are formed at equal intervals in the upper and lower vertical directions, and five eyelet holes 4 are also formed in the upper and lower vertical directions at positions 180 cm away from each other. A string (not shown) for connecting to the vertical single pipe 1 is fixed to the eyelet holes 4, and a sheet (nonwoven fabric) 3 is attached to the vertical single pipe 1 with these strings to attach the sheet (nonwoven fabric) 3. Spread. 1 is located in the vertical single tube 1 and the adjacent sheets (nonwoven fabrics) 3 are 30 to 40 cm in this embodiment. It is stretched with 30cm overlap at both ends.

  In addition, the vertical length of the sheet (nonwoven fabric) 3 is in a range of 600 to 700 cm, and the vertical eyelet holes 4 to be positioned at the portions of the vertical single tube 1 are not limited to five pieces, 2-6 pieces are preferable and formed at equal intervals.

  Eyelet holes 5 are also formed in the mesh sheet 2 shown in FIG. 2, and the mesh sheets 2 are connected and stretched by sticking between the eyelet holes 5 of adjacent mesh sheets 2 to the vertical single tube 1 with a string 6. As shown in FIG. 2, the outer periphery of the building is surrounded by a mesh sheet 2, and a sheet (nonwoven fabric) 3 is stretched over the mesh sheet 2 on the opposite surface of the mesh sheet 2 that does not face the building. When the mesh sheet 2 stretched on the two vertical single tubes 1 is taken as one unit, both ends of the sheet (nonwoven fabric) 3 are left in the horizontal direction (60 to 80 cm) / 2 from the vertical single tube 1. The mesh sheet 2 is stretched across n units (n is 2 to 6), and its end (60 to 80 cm) / 2 overlaps with the end of the adjacent sheet (nonwoven fabric) 3. . Further, the sheet (nonwoven fabric) 3 is stretched by a person on a scaffold assembled between the building and the mesh sheet 2, but at an end of (60 to 80 cm) / 2. The string fixed to the eyelet hole 4 is connected to the vertical single tube 1, and the adjacent sheet (nonwoven fabric) 3 is connected to the vertical single tube 1 in the same manner. Thus, after connecting the eyelet holes 4 facing each other at both the upper and lower ends of the (60 to 80 cm) / 2 end of the sheet (nonwoven fabric) 3, the sheet is fixed to the vertical single tube 1 on either the left or right side. Furthermore, the eyelet holes 4 (5 vertical in FIG. 1) below both ends are fixed to the vertical single tube 1 with a fixed string.

  The mesh sheet 2 uses a Russell net, has air permeability, and allows the paint mist to pass therethrough. As the material for the paint mist scattering prevention sheet (nonwoven fabric) 3, nylon or polyester is preferably used. Moreover, the tear strength (N) (Tear Strength, tear strength) of synthetic fiber long-fiber nonwoven fabric is measured by the Benjuram method, and it is suitable as the sheet | seat (nonwoven fabric) 3 used that it is 3.5-10.0 (N). there were. The Benjuram method is a method of collecting 6.5 cm x 10 cm test pieces in the vertical and horizontal directions, and using an elemen dollar type tear strength tester. This is a method in which a 2 cm cut is made by a cutter perpendicular to the side in the center, and the maximum load shown when the remaining 4.5 cm is torn is applied, and the vertical and horizontal directions are expressed as average values. Furthermore, the thickness of the sheet (nonwoven fabric) 3 is preferably 0.28 to 0.46 mm. If it is less than 0.28 mm, the strength is insufficient, and if it is more than 0.46 mm, it becomes too hard and the stretching work becomes difficult.

A comparative experiment was conducted on the degree of paint splashing and the drying property depending on the type of curing sheet. As the curing sheet, a Russell net sheet (a), a blue sheet (vinyl sheet) (b), and a nonwoven fabric sheet (c) were used. In each of these (a) to (c), the box was covered except for a part of the ceiling of the box and a part of the side surface for sending wind. In addition, an OHP sheet is installed on the outside of the curing sheet, between the sheets, and between the ceilings, and an acrylic silicone emulsion paint (hereinafter referred to as "paint A") with a solid content of 67% by weight is sent to the box for 20 minutes while sending air from the side. It was painted (using a spray gun) and left for 60 minutes. The wind speed at the center of the box was about 1 m / s, and the size of the box was (450 mm × 90 mm × 55 mm). The amount of paint mist adhering to the OHP sheet was compared. Moreover, about the comparison of drying property, the board which coated the coating material A in the box which covered 5 surfaces other than the bottom face with each curing sheet is put, and the touch drying time is compared. The size of the box at this time was 70 mm × 200 mm × 330 mm, the air temperature was 23 ° C., the humidity was 50% RH, and no wind was applied, and the coating amount of the coating material A was 0.35 kg / m ² .

The sheet (b) does not pass any air, and the sheet (c) does not easily pass air. When the scattering prevention effect of the sheets (b) and (c) was evaluated as “5” (high prevention effect), the sheet (a) was evaluated as “3” (low prevention effect). Moreover, regarding the drying property, when (a) the sheet is ◯, (b) the sheet was evaluated as x, and (c) the sheet was evaluated as Δ. The evaluation criteria are as follows.
◯: Good drying property Δ: Slightly inferior drying property, but no problem in practical use ×: Poor drying property The nonwoven fabric sheet (c) has a lot of paint mist scattered from the gaps between the sheets. This is presumably because the material is softer than the other sheets (a) and (b), so that the nonwoven fabric sheet flutters with the wind from the side surface and the gap is temporarily widened.

  Based on the experimental results as described above, the present invention was developed to prevent the paint mist from scattering, the drying property is not greatly impaired, and the construction as described above is facilitated. is there.

The front view which shows a sheet | seat (nonwoven fabric) and a vertical single pipe. The front view which fixed the mesh sheet to the vertical single pipe.

Explanation of symbols

1 Vertical single tube 2 Mesh sheet 3 Sheet (nonwoven fabric)
4 Eyelet hole

Claims (6)

Sheets for preventing paint mist from spreading on a single vertical pipe that forms a scaffolding at the construction site, mesh sheets stretched between the adjacent vertical single pipes, and stretched around the outer periphery of these mesh sheets Because
It consists of a non-woven fabric formed with a width of 2 to 6 times the interval between vertical single tubes plus 60 to 80 cm,
Adjacent nonwoven fabrics are stretched in a state where both end portions overlap each other by 30 to 40 cm.   When the interval between the vertical single tubes is 180 cm, the width of the nonwoven fabric is (180 cm × n (n is an integer of 2 to 6) plus 60 to 80 cm, and the vertical width is 600 to 700 cm. Item 2. A sheet for preventing paint mist from scattering according to Item 1.   There are eyelet holes at four places above and below both ends of the nonwoven fabric, and there are 2 to 6 eyelet holes at equal intervals on a straight line extending in the horizontal direction (60 to 80 cm) / 2 from both ends. Furthermore, it has the same eyelet hole extended up and down at a space | interval of 180 cm in the horizontal direction, The string for connecting with a vertical single pipe is being fixed to all eyelet holes. Sheet for preventing paint mist from splashing.   The thickness of the nonwoven fabric is 0.25 to 0.5 mm, and the tear strength measured by the Benjuram method is 3.5 to 10.0 (N). The sheet | seat for paint mist scattering prevention as described in 2. A method of spreading a sheet for preventing paint mist from spreading on the outer periphery of a painting construction site,
A mesh sheet made of russell nets is formed on opposing vertical single tubes of a predetermined width to form a scaffold, and connected and stretched through eyelet holes. This is repeated as a unit, and the outer periphery of the building is surrounded by a mesh sheet.
Next, in the step of spreading the nonwoven fabric on the opposite side of the mesh sheet that does not face the building, the mesh sheet is left with both ends of the nonwoven fabric left in the horizontal direction (60-80 cm) / 2 in the horizontal direction. The sheet is stretched across n units (n is 2 to 6), and its end (60 to 80 cm) / 2 is stretched so as to overlap with the end of the adjacent nonwoven fabric. A method for spreading a sheet for preventing paint mist from splashing.   The non-woven fabric is stretched by a person on a scaffold assembled between a building and a mesh sheet, and is fixed to an eyelet hole at a position where the end of (60 to 80 cm) / 2 is folded. After connecting the adjacent non-woven fabrics to the vertical single tube in the same manner, connecting the opposing eyelet holes at the upper and lower ends of the end of (60 to 80 cm) / 2, the left and right The paint mist scattering prevention according to claim 5, wherein the mist holes are fixed to either side of the vertical single pipe, and the eyelet holes other than both ends are connected to the vertical single pipe with fixed strings. Sheet spreading method.

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