JPS6384779A - Welding curtain material - Google Patents

Abstract

PURPOSE:To improve the welding working environment by using a synthetic resin film or sheet with transmittivity <=10% of a beam of light with a wavelength <=400nm to check the beam of light to be harmful to the human body generating at the time of welding. CONSTITUTION:Polyvinyl chloride, polyethylene, polypropylene, polystyrene, etc., are used as resin material of the synthetic resin film or sheet to constitute curtain material. The polyvinyl chloride is most desirable of these materials. Furthermore, in order to maintain a transmission characteristic of the beam of light, an ultraviolet ray absorbent, etc., are added to the synthetic resin material. The working environment of a workshop can be improved by using the material with this constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a curtain material used to form a welding curtain for blocking as much as possible harmful light rays generated during welding work and the like.

[Conventional technology]

Traditionally, welding work sites, etc. have been painted in various colors and installed around welding work sites to protect the eyes of people around the welding work site from the light rays generated while welding. There are various types of welded curtains.

[Problem that the invention seeks to solve]

However, the synthetic resin film forming the welding curtain has a wavelength of 400 nm, which is harmful to the human body and eyes.
The ability to block ultraviolet rays of the following wavelengths (particularly rays with a wavelength of 320 nm or less) is not sufficient.Therefore, curtain materials for welding curtains that can reliably block the above-mentioned harmful rays are in the market. It was desired °ζ.

The present invention has been made in consideration of the above-mentioned points, and is a welding curtain that can reliably shield harmful rays from the human body or mouth and improve the mouth protection and safety of people around the welding workplace. The purpose is to provide materials.

[Means for solving problems]

That is, the gist of the present invention is a welding curtain material that is made of a synthetic resin film or sheet that has a transmittance of 10% or less for light having a wavelength of 400 nm or less.

〔Example〕

The present invention will be explained in detail below.

The welding curtain material of the present invention has a light transmittance property of less than 10% of the transmittance of light with a wavelength of 400 nm or less, which sufficiently blocks ultraviolet rays generated during welding that are harmful to the human body or mouth. It is something that can be done.

Examples of the resin material of the synthetic resin film or sheet forming the curtain material include polyvinyl chloride, polyethylene, polypropylene, polystyrene, etc., and among them, polyvinyl chloride is the most preferred.

The curtain of the present invention (e) is synthesized as described above by appropriately selecting resin additives such as ultraviolet absorbers, plasticizers, stabilizers, lubricants, antistatic agents, colorants, and flame retardants in order to ensure light transmission properties. A predetermined amount is added to the resin material.The amount of additive added is adjusted depending on the type of synthetic resin, the thickness of the film or sheet, mechanical properties such as flexibility, and chemical properties.For example,
When polyvinyl chloride resin is used, the following amount of resin additive is added to 100 parts of the resin.

Polyvinyl chloride toom Hotaru UV absorber 0.01-311t Keibe plasticizer
O~70 Juyabu stabilizer 0.1~
101 parts (preferably 1-5 m) Qjf agent 0.01-1 parts by weight Antistatic agent 0.01-1 parts by weight Invention
0.001 to 2 parts by weight Examples of ultraviolet absorbers that can be used in the present invention include the following.

■Hydroquinone-based products Hydroquinone, hydroquinone disaricylate, etc.

■Salicylic acid-based products such as phenyl salicylate, rose octylphenyl salicylate, etc.

■Benzophenone type 2-hydroxy-4-methoxybenzophenone, 2-
Hydroxy-4-n-octoxybenzophenone, 2
-Hydroxy-4-methoxy-2'-carboxybenzophenone, 2,4-cibaidoxybenzophenone, 2
．． 2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-benzoisoxybenzophenone, 2,2'-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methquine-5
-Sulfonebenzophenone, 2.2',4゜4'-tetrahydroxybenzophenone, 2゜2'hydroxy-4,4'dimethoxy-5-sodium sulfonebenzophenone, 4-dodecyloxy-2-hydroxybenzophenone, 2-hydroxy- 5-chlorobenzophenone etc.

■Hencytriazole type 2-(2'-hydroxy-57-methylphenyl)benzotriazole, 2-(2'-hydroxy-57-methylphenyl)-5-carboxylic acid butyl ester benzotriazole, 2・(2'-hydroxy-5
'-Methylphenyl)-5,6-dichlorobenzotriazole, 2-(2'-hydroxy-5'-methylphenyl)-5-ethylsulfonebenzotriazole, 2-
(2'-hydroxy-5'-tert-butylphenyl)-
5-chlorobenzotriazole, 2-(2'-hydroxy-5'-tert-butylphenyl)chlorobenzotriazole, 2-(2'-hydroxy-5'-tert-butylphenyl)benzl-IJ azole, 2-(2 '-Hydroxy-5'-amylphenyl〉hensotriazole, 2-(2'-hydroxy-3',5'-dimethylphenyl)benztriazole, 2-(2'-hydroxy-3'+5'-dimethylphenyl) -5-methoxybenzotriazole, 2-(2'-methyl-4'-hydroxyphenyl)benzotriazole, 2-(2'-stearyloxy-3',5'-dimethylphenyl-5-
Megurhenzotriazole, 2-(2'-hydroxy-5-carboxylic acid phenyl)benzotriazole ethyl ester, 2-(2'-hydroxy-3'-methyl-5'-tert-butylphenyl)benzotriazole, 2
-(2'-Hydroxy-3',5'-ditertiary bugluphenyl)-5-chloro-benzotriazole, 2-(
2'-hydroxy-5'-methoxyphenyl)benzotriazole, 2-(2'-hydroxy-51-phenylphenyl)-5-chlorobenzotriazole, 2-
(2'-hydroxy-5'-cyclohexylphenyl)benzotriazole, 2-(2'-hydroxy-5
-cyclohexylphenyl)benzotriazole, 2-
(2'-hydroxy-4',5'-dimethylphenyl)-5-carboxylic acid benzotriazole butyl ester, 2-(2'-hydroxy-3',5'-dichlorophenyl)benzotriazole, 2-( 2'-hydroxy-4'+5' dichloro)benzotriazole, 2-(
2'-hydroxy-3',5'-dimethylphenyl)
-5-ethylsulfonebenzotriazole, 2-(2'
-Hydroxy-5'-phenylphenyl)benzotriazole, 2-(2'-hydroxy-5'-methoxyphenyl)-5-methylbenzotriazole, 2-(2
'-Hydroxy-5'-methylphenyl)-5-carboxylic acid ester benzotriazole, 2-(2'-acetoxy-5'-methylphenyl)benzotriazole,
2(2'Hydroxy3',5'Dicushyaliptylphenyl)5chlorobenzotriazole, etc.

Among these ultraviolet absorbers, those based on benzophenone group and benzotriazole are preferable, and among those based on benzophenone, 2,2'-dihydroxy 4,4'
-dimethoxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone and 2.2', 4.4
'-Tetrahydroxybenzophenone; as a benzotriazole type, 2-(2'-hydroxybenzophenone
'-Methylphenyl)benzotriazole, 2-(2'
-Hydroxy-5'-methylphenyl)-5,6-dichlorobenzotriazole, 2-(2'-hydroxy-5'-tert-butylphenyl)benzotriazole, 2
-(2'-hydroxy-3'-methyl-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-
Chlorobenzotriazole and 2-(2'-hydroxy-5'-phenylphenyl)-5-chlorobenzotriazole are effective.

As the above-mentioned plasticizer, the following can be used. Examples of phthalate ester plasticizers include dimethyl phthalate, diethyl phthalate, diisobutyl phthalate, dioctyl tuclate, octyl capryl phthalate, dicyclohexyl phthalate, didodecyl phthalate, butyl benzyl phthalate, dimethyl glycol fucray I, and ethyl phthalyl ethylene glycol. cholate, methyl phthalyl ethyl glycolate, butylphthalyl butyl glycolate, diisodecyl phthalate-1, etc.; fatty acid ester plasticizers include methyl acetyl lysyl-1, dioctyl adipate, dioctyl azelate, dibutyl sebacate, Dioctyl sebacate, l-lyacetylglycerin, glycerol butyrate, diisodecyl succinate, diisodecylazibe-1, succinic acid? Other plasticizers include trimetate ester plasticizers such as trioctyl trimellitic acid, and epoxidized soybean oil and various epoxy resins. , polyester polymer plasticizers, etc. can also be used. The above plasticizer is not added when, for example, hard polyvinyl chloride is used.

The above stabilizers include metal stabilizers such as cadmium, zinc, barium, calcium, strontium, aluminum, magnesium, cerium, sodium, lead, and tin, as well as organic phosphorus compounds, polyhydric alcohols, epoxy compounds, etc. Or two or more types can be used in combination.

The above-mentioned lubricants include hydrocarbon-based lubricants such as liquid paraffin, natural paraffin, microwax, polyethylene wax, chlorinated hydrocarbons, fluorocarbon oil, etc.; fatty acid-based lubricants such as higher fatty acids and oxyfatty acids;
(alkyl) fatty acid amide such as fatty acid amide, methylene bisamide, ethylene bisamide, etc.
Bis-fatty acid amides, etc. Ester-based products include simple esters, glycerides, ester waxes, etc.; aliphatic alcohols include m-alcohols, polyhydric alcohols, etc., as well as metallic soaps, fatty acid and dihydric alcohol parts, etc. As an ester or a composite lubricant, a mixture of ethylene glycol monostearate and various waxes or various waxes can be used.

As the antistatic agent, conventionally known antistatic agents can be appropriately selected and used.

The above coloring agent can be used by appropriately mixing the following coloring agents, and the curtain material of the present invention is colored with a desired color using the coloring agent. Green ones include Fukurocyanine Green; blue ones include mln, cobalt flu,
Fuclocyanine blue, industhrene blue, etc.; yellowish ones such as disazo yellow, chrome yellow, cadmi yellow, iron oxide yellow, benzine yellow, Hansa yellow, isoindolinone yellow, rhodamine lake, anthraquinone yellow; red ones As Bengara, Kadomi Red, Pyrazolone Red, Lake Red 01 Carmine 6B, Pigment Scar Left 3B, Bordeaux 10B
1 Bon Maroon, Permanent Red F5R, Nonacridone Resod, etc.; Black ones include carbon black and the like.

Flame retardants that can be used in the present invention include tetrabromoethane, tetrabromoethane, tris(bromochloropropyl)phosphate, octyldiphenylphosphate, cresyldiphenylphosphate, trichlorethylene phosphate, bis(2,3-dibromopropyl)- Dichloropropyl phosphate, tris(2,3-
dibromopropyl) phosphate, 1-lis-dichloropropyl phosphate, tributyl phosphate, tricresyl phosphate, tris(monochloropropyl)
phosphate, chlorinated paraffin, tris(2,3-dichloropropyl)phosphite, β-chloroethyl-acid phosphite 1, tris(β-chloroethyl)phosphite!・Vinyl bromide, antimony oxide, trioctyl phosphate, methyl chlorostearate, dimethyl chlorendoate, titanium phosphate, tryptoxyethyl phosphate, bis(chlorovir) monophenyl phosphate, bis(chloropropyl) monooctyl phosphate 1. etc. are mentioned. In addition to the flame retardants mentioned above, flame retardant plasticizers can be used, such as phosphoric ester plasticizers, etc., specifically tributyl phosphate, tricresyl phosphate, l・Rifenyl phosphate 1・, triethyl phosphate, trioctyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, ori-ru alkyl phosphate, diphenyl monoorthoxenyl phosphate 1・etc. (> ij get lost.

In producing the curtain material of the present invention, a film or sheet is produced by a mounting method such as a calendar method or an extrusion method. The thickness of the above film or sheet is 0.1-2
．． 0+u is preferred.

The curtain material of the present invention having the above structure can be cut into a predetermined shape and formed into a screen-type or hanging-type curtain, and used as a welding curtain.

Next, the present invention will be explained in more detail by giving specific examples.

A composition having the following composition is used as the basic composition in this example.

“Basic composition” Polyvinyl chloride (i”; = 1100) 60
Parts by weight (II=1300) 40 fflH parts Benzotriazole UV absorber 0.5 parts by weight Dioctyl phthalate 2 AmEi parts Phosphate ester plasticizer 27 parts by weight Stabilizer
2.9 parts by weight ethylene bisamide (lubricant) 0.
2iHt part Antistatic agent 0.3 parts by weight The following colorants were added to the above basic composition in the same way.In this example, polyvinyl chloride 100! ItJd
The curtain material of the present invention is prepared by forming a film (sheet) using a calendar method and colored in three different colors.
Curtain Moon (colored dark green), Curtain material B (colored green), Curtain material C (
(colored yellow) was produced.

"Coloring agent" ■Things that color dark green (A) Phthalocyanine blue 0.213 > Itfd part Carbon black 0.0 (i15 parts by weight ■Things that color green (B) Phthalocyanine blue 0.7 parts by weight Carr, 1ζ
Blank 0.0513 weight ■Things to be colored yellow (C) Disazo Yellow 0.195 weight ■ Part Above j
) Curtain material A, Curtain material B, Curtain (,
The light transmission Σ1; for each wavelength of each IC was measured. The results are shown in FIG. 1 as a ray 12ii pass rate curve.

As is clear from the light transmittance curve in Fig. 1, the welding curtain material of the present invention has a transmittance of 10% or less for all light rays with wavelengths of 400 nm or less, and 320 nm, which is particularly harmful to the human body or eyes, has a transmittance of 10% or less. It was found to be an excellent product that can reliably block the transmission of light rays of the following wavelengths. Furthermore, as shown in the light transmittance curve in Figure 1,
The curtain material C has a light transmittance of about 80 to 90% for light with a wavelength exceeding 500 nm, so the curtain material C has a wavelength of 500 nm.
Curtain material A colored dark green and Curtain material B colored green have a light transmitting property that substantially transmits light rays with wavelengths exceeding 4.
It shows a fairly low value of light transmittance for light rays with wavelengths exceeding 00 to 500 nm, and as shown in Figure 1, it can almost block even light rays with wavelengths around 9Q Q nm. It was confirmed that the characteristics were as follows.

According to the above-mentioned curtain materials A and B, even for light rays with a wavelength of around ionm (approximately 550 to 650 nm), which is said to be the most sensitive (in other words, the most irritating) light ray to the human eye, It has a low light transmittance, so it can sufficiently block light rays with a wavelength of 400 nm or less, and at the same time it can also block the light rays that are most likely to irritate the human mouth, reducing irritation to the eyes. , it has the advantage of being able to protect the eyes.

〔Effect of the invention〕

As explained above, the welding curtain material of the present invention is constructed so that the transmittance of light with a wavelength of 400 nm or less is 10% or less, which is harmful to the human body or mouth during welding work etc. This has the effect of being able to sufficiently and reliably block light rays (particularly light rays with a wavelength of 320 nm or less).

Therefore, by forming a welding curtain using the curtain material of the present invention, it is possible to easily improve the protection and safety of the mouths, etc. of people around the welding workplace.

[Brief explanation of the drawing]

Figure 1 is a diagram of light transmittance curves by wavelength of each welding curtain material in this example.

Claims (1)

[Claims] A welding curtain material comprising a synthetic resin film or sheet configured to have a transmittance of 10% or less for light having a wavelength of 400 nm or less.