JPH02112459A - Nonwoven fabric of fluorescent polyester filament - Google Patents
Nonwoven fabric of fluorescent polyester filamentInfo
- Publication number
- JPH02112459A JPH02112459A JP63265016A JP26501688A JPH02112459A JP H02112459 A JPH02112459 A JP H02112459A JP 63265016 A JP63265016 A JP 63265016A JP 26501688 A JP26501688 A JP 26501688A JP H02112459 A JPH02112459 A JP H02112459A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- fluorescent
- perylene
- fluorescent dye
- polyester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 33
- 229920000728 polyester Polymers 0.000 title claims abstract description 17
- 239000007850 fluorescent dye Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920001283 Polyalkylene terephthalate Polymers 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 28
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 claims description 9
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 claims description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 abstract 1
- 238000009987 spinning Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- -1 optical brighteners Substances 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 241001474791 Proboscis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は１周囲の光線、ずなわら、光源からの直接光や
間接光を捕らえて、それを蛍光に変える蛍光染料を含有
さ一已た蛍光性７１ミリエステル長繊維からなる不織布
に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is directed to a dye containing a fluorescent dye that captures surrounding light, including direct light and indirect light from a light source, and converts it into fluorescence. The present invention relates to a nonwoven fabric made of fluorescent 71-milliester long fibers.
（従来の技術）
従来、蛍光性繊維は、綿、紐、絽１．布等Ｊ・Ｅ々の形
態にできることから、装飾用途への適用が期待され例え
ば１特開昭（ｉｏ−８１３１５号公報に無代蛍光剤を含
有させたものが提案されている。(Prior Art) Conventionally, fluorescent fibers include cotton, string, and silk. Since it can be made into the form of cloth or the like, it is expected to be applied to decorative purposes, and for example, a product containing a non-fluorescent fluorescent agent has been proposed in JP-A No. 1 (IO-81315).
また１蛍光顔１゛′［を含有させた合成樹脂シートによ
り太陽光を集光し、′１〒定の波長へ変換して太陽電池
の効率を向上させることが試ゐられており例えば、 ′
ｌｉ開昭５７−２１４５３ 号−公’＜’ｉ＆ ヒ同５
７−２３（１；５３号公）旧こは、アントラ−１−ノン
系１ペリレン系もしくはチオインジゴ系の蛍光顔ＩＦ’
）を含有させたポリアノ１ハ１−レンチレフクレートか
らなるものが開示されている。In addition, attempts have been made to improve the efficiency of solar cells by concentrating sunlight using a synthetic resin sheet containing a fluorescent compound and converting it into a specific wavelength.
li Kaisho 57-21453-Ko'<'i & Hido 5
7-23 (1; Publication No. 53) This is anthra-1-non-based 1-perylene-based or thioindigo-based fluorescent face IF'
) is disclosed, which is made of polyanol 1-1-lentirefrate.
（発明が解決しようとずろ課題）
従来の蛍光剤では、１〜分な蛍光性を有する長１代）；
１［手織布をｉｉすることは国運であった。(Problem to be solved by the invention) Conventional fluorescent agents have a fluorescence of 1 to 10 minutes);
1. Making hand-woven cloth was a national fortune.
また、蛍光剤として１蛍光Ｃｍ零′）を用いて蛍光性良
識ｈ；「不織布を製造する場合、蛍光性長１！届ｌｆｔ
不織布として満足できる不１１（布が得られろ！」１の
蛍光ＱｆＨ料を含イ［させると４−最に長１人維の可紡
性が低丁し操業性が悪化する。ずなわら、顔ｆ’）の一
部が）虜１イ中に堆積してａＧ圧を」二肩さ−Ｕたり、
ｔＩ’［大な１項１′−［粒子がｆ５．Ｖ ｆｉｔ中
に残存して糸切れを起ごしたりする。In addition, when manufacturing non-woven fabrics using 1 fluorescent Cm 0') as a fluorescent agent, fluorescent length 1!
If a fluorescent QfH material is added, the spinnability of long fibers will be low and the workability will be deteriorated. , a part of the face f') is deposited inside the prisoner's body, causing aG pressure to be applied to the upper shoulders,
tI' [large one term 1'-[particle is f5. It may remain in the V fit and cause thread breakage.
本発明は、このような問題を解消した蛍光性ポリエステ
ル良１（↓維不織布を提供しようとするものである。The present invention aims to provide a fluorescent polyester fiber nonwoven fabric that solves these problems.
（課題を解決するだめの手段）
本発明者らは、上記の目的を達成するためにｉＪｔ意検
討の結果１特定の蛍光染料を含有させたポリエステル長
繊維で不織布を形成することが有効′（あることを見出
し１本発明に到達した。(Another Means to Solve the Problem) In order to achieve the above object, the present inventors conducted an iJt study and found that it is effective to form a nonwoven fabric using polyester long fibers containing a specific fluorescent dye. We discovered one thing and arrived at the present invention.
すなわち５本発明は、ポリアルキレンテレフタレート又
はこれを主体点するポリエステルに対してペリレン系蛍
光染ｆｌを０．００１重■重量上含有さ・υた組成物で
構成された蛍光性ポリエステル長繊維からなる不織布を
要旨とするものである。In other words, the present invention consists of a fluorescent polyester long fiber composed of a composition containing polyalkylene terephthalate or a polyester mainly composed of this and containing perylene fluorescent dye fl by 0.001 wt. The gist is nonwoven fabric.
本発明におけるポリエステルとしては、実質的に透明な
もの、すなわち、ＪＩＳ Ｋ ７１０５にン１ｔじて測
定した平行光線透過率が７０％以上で１の価が５以下の
ものが好ましく用いられる。As the polyester in the present invention, a substantially transparent polyester, that is, one having a parallel light transmittance of 70% or more and a value of 1 of 5 or less as measured according to JIS K 7105 is preferably used.
本発明におけるペリレン系螢光染料としては特開昭５７
−１２５２６０号公報、同５８−４０３５９−号公報及
び同Ｇｏ ２０３６５０号公報に開示されているよう
な化合物が挙げられ、２種以上併用してもよく、ペリレ
ン系以外の蛍光染料を併用してもよい。As the perylene-based fluorescent dye in the present invention, JP-A No. 57
Examples include compounds disclosed in Go-125260, Go-58-40359-, and Go-203650, and two or more of them may be used in combination, and fluorescent dyes other than perylene-based dyes may be used in combination. good.
ペリレン系蛍光染料は、ポリエステル繊維中に。Perylene fluorescent dyes are used in polyester fibers.
０．００１重量％・以上含有させることが必要であり。It is necessary to contain 0.001% by weight or more.
好ましくは０．００５重星重量上含有させることが望ま
しい。この含有量が０．００１重星重量満では長繊維不
１．゛↓布の蛍光性が不七分となる。Preferably, the content is preferably 0.005 double star weight or more. If this content is less than 0.001 double star weight, long fibers will be insufficient.゛↓The fluorescence of the cloth becomes uneven.
本発明の長繊維不織布を得るには５ポリエステルの合成
時又はポリエステルにペリレン系蛍光染料を直接添加し
て溶融押出しし、空気圧を利用し繊維を延伸しつつ不織
布ウェブとすればよい。ペリレン系蛍光染料の添加方法
は特に限定されずポリエステルに添加する場合、トライ
ゾレンド法やマスターバッチ法等を採用するごとができ
る。In order to obtain the long fiber nonwoven fabric of the present invention, a perylene fluorescent dye may be directly added to the polyester during synthesis or by melt extrusion, and the fibers may be stretched using air pressure to form a nonwoven fabric web. The method of adding the perylene fluorescent dye is not particularly limited, and when it is added to polyester, the Trisolend method, masterbatch method, etc. can be employed.
また１本発明の長繊維不織布は、ペリレン系螢光染料を
０．００１重量％以上含有したポリエステル組成物を単
独で紡糸して製造した長繊維不織布のほか、この組成物
と他の成分とを複合紡糸して製造したｒ：Ｚｉｔ維不織
布でもよい。Further, the long fiber nonwoven fabric of the present invention includes a long fiber nonwoven fabric produced by spinning a polyester composition containing 0.001% by weight or more of perylene fluorescent dye alone, as well as a long fiber nonwoven fabric produced by spinning this composition and other components. An r:Zit fiber nonwoven fabric produced by composite spinning may also be used.
繊維の断面形状は３通常１円形とされるが、中空三葉状
１六葉状等の異型断面としてもよい。なお本発明のＩＺ
ｆ５Ｌ維不織布には、その効果を損なわない範囲で、
蛍光増白剤、滑剤、熱安定剤、酸化防止剤制電剤等の添
力１１剤を同時に含有させることができる。The cross-sectional shape of the fibers is usually circular, but may have a modified cross-section such as a hollow trilobal shape or hexalobular shape. Note that the IZ of the present invention
The f5L fiber non-woven fabric includes:
Eleven additives such as optical brighteners, lubricants, heat stabilizers, antioxidants, and antistatic agents can be contained at the same time.
本発明の長繊維不織布は、独特な色合いを有しまた吸収
した光エネルギーをより長波長の光に変換して放出する
ので、芯作吻の生育調整用、促進用覆い等に利用できる
。The long-fiber nonwoven fabric of the present invention has a unique color and converts absorbed light energy into light with a longer wavelength and emits it, so it can be used as a cover for regulating and promoting the growth of core crop proboscis.
（実施例） 次に１実施例により本発明を具体的に説明する。(Example) Next, the present invention will be specifically explained using one example.
なお、極限粘度は、フェノールと四塩化エタンとの等重
量混合物を溶媒として、２０℃で測定した値であり、平
行光線透過率及び一価はＪＩＳ Ｋ ７１０５法に準じ
て、板厚３鰭及び４１で測定１．７た値である。In addition, the intrinsic viscosity is a value measured at 20°C using an equal weight mixture of phenol and tetrachloroethane as a solvent, and the parallel light transmittance and monovalent value are determined based on the JIS K 7105 method. The value was 1.7 when measured at 41.
また、不織布の蛍光強度は、肉ｆｌ１２により観察し。In addition, the fluorescence intensity of the nonwoven fabric was observed using meat fl12.
○：強、△：中、×：弱の３段階で評価した。Evaluation was made in three stages: ○: strong, △: medium, and ×: weak.
実施例１〜４及び比較例１〜２
極限粘度０．７８．平行光綿透過皐９９％、ロ価１％の
ポリエチレンテレツクレートのチップに、第１表に示し
た蛍光染料（かっこ内の数値は、添加里で単位は重量％
）を１−ライブレンドしてエクストルーダー型溶融紡糸
機に供給し、紡糸温度３００℃で。Examples 1 to 4 and Comparative Examples 1 to 2 Intrinsic viscosity 0.78. The fluorescent dye shown in Table 1 (the numbers in parentheses are additives and the unit is % by weight
) was blended and fed to an extruder type melt spinning machine at a spinning temperature of 300°C.
第１表に示した紡糸口金をそれぞれ使用し、第１表に示
した吐出量で紡出し、このフィラメントをエアジェツト
で５．０００ｍ／ｍｉｎの速度で引取り、ネット上でウ
ェッブ状に捕集した後５表面温度２３５℃のスチールロ
ールにて夕、さ圧接を行い、０付、５０１Ｅ／ｍ”の長
繊維不織布を得た。Using the respective spinnerets shown in Table 1, the filaments were spun at the discharge rates shown in Table 1, and the filaments were taken off with an air jet at a speed of 5,000 m/min and collected on a net in the form of a web. After that, pressure welding was performed in the evening using a steel roll with a surface temperature of 235° C. to obtain a long fiber nonwoven fabric with a weight of 0 and a weight of 501 E/m”.
紡糸及び不織布操業性は、いずれも良好であり得られた
不織布シートの状態はいずれも良好であった。得られた
長繊維不織布の蛍光強度を第１表に示す。The spinning and nonwoven fabric operability were both good, and the condition of the obtained nonwoven fabric sheet was good. Table 1 shows the fluorescence intensity of the obtained long fiber nonwoven fabric.
第１表において、蛍光染料はいずれもバスフ社製ペリレ
ン系蛍光染料で、略号は次に示すものを使用した。In Table 1, the fluorescent dyes were all perylene fluorescent dyes manufactured by BASF Co., Ltd., and the abbreviations shown below were used.
Ｆ Ｏ： Ｆｌｕｏｒｅｓｃｅｎｃｅ Ｏｒａｎｇｅ
２４０Ｆ Ｒ： Ｆｌｕｏｒｅｓｃｅｎｃｅ ＲＥ
Ｄ ＫＦ８５６４実施例５
実施例１における蛍光染料をブレンドしたポリエチレン
テレフタレート・組成物と蛍光染料を含有しないポリエ
チレンテレフタレートとを等重量用い、前者を芯成分と
する同心芯！ｒ１″ｉ型複合長繊維からなるスパンボン
ド不織布を製造した。その際。FO: Fluorescence Orange
240F R: Fluorescence RE
D KF8564 Example 5 The polyethylene terephthalate composition blended with the fluorescent dye in Example 1 and the polyethylene terephthalate containing no fluorescent dye were used in equal weights to form a concentric core with the former as the core component! A spunbond nonwoven fabric made of r1''i-type composite filaments was produced.
紡糸温度３００℃で、孔数２００の複合型紡糸口金を用
いて実施例１におけると同じ方法で、長繊維不織布を得
た。紡糸、操業性ともに良好であり、得られた不織布シ
ートの蛍光強度は良好であった。A long-fiber nonwoven fabric was obtained in the same manner as in Example 1 using a composite spinneret with 200 holes at a spinning temperature of 300°C. Both spinning and operability were good, and the obtained nonwoven fabric sheet had good fluorescence intensity.
上記各実施例で得られた長繊維不織布について日立製作
所製分光蛍光光度計６５０−１０ Ｓ型を用いてシート
の蛍光スペクトルを求めたところ１実施例１〜２及び５
の長繊維不織布では、 ５８０ｎｍ付近にピークのある
強いオレンジ色の蛍光を示し、実施例３〜４の長繊維不
織布では、 ６１０ｎｍ付近にピークのある強い赤色の
蛍光を示した。The fluorescence spectra of the long fiber nonwoven fabrics obtained in each of the above Examples were determined using a spectrofluorometer 650-10 S model manufactured by Hitachi. Examples 1 to 2 and 5
The long fiber nonwoven fabrics of Examples 3 to 4 exhibited strong orange fluorescence with a peak around 580 nm, and the long fiber nonwoven fabrics of Examples 3 to 4 exhibited strong red fluorescence with a peak around 610 nm.
参考例１
実施例１における蛍光染料に代えて５チバガイギ一社製
蛍光憎白剤ＩＪｖｉｔｅｘ ＭＥＳを０．０２重徂％使
用した以外は実施例１と同様にしてポリエステル長繊維
不織布を得た。Reference Example 1 A polyester long fiber nonwoven fabric was obtained in the same manner as in Example 1 except that 0.02% by weight of a fluorescent whitening agent IJvitex MES manufactured by Ciba-Geigi Co., Ltd. was used in place of the fluorescent dye in Example 1.
得られた長繊維不織布の蛍光強度は不良であった。The fluorescence intensity of the obtained long fiber nonwoven fabric was poor.
参考例２
実施例１における蛍光染料に代えて、蛍光剤として平均
粒径１２μの硫化亜鉛（賦活剤として銅を含有）を３重
量％使用した以外は実施Ｄｉ １と同様にしてポリエス
テル長繊維不織布をｉｔだ。Reference Example 2 A polyester long fiber nonwoven fabric was produced in the same manner as in Example Di 1, except that 3% by weight of zinc sulfide (containing copper as an activator) with an average particle size of 12 μm was used as a fluorescent agent instead of the fluorescent dye in Example 1. It's it.
得られた不織布シートの蛍光強度はやや不良であったが
、紡糸時に糸切れが多発し１長ｊＪｌ ｉ業が不可能で
あった。The fluorescence intensity of the obtained nonwoven fabric sheet was somewhat poor, but yarn breakage occurred frequently during spinning, making it impossible to carry out one-length yarn processing.
（以下、余白）
（発明の効果）
本発明によれば、蛍光強度が大きく、風合が良好で、か
つ操業性良く製造することのできる蛍光性ポリエステル
長繊維不織布が提供される。(Hereinafter, blank spaces) (Effects of the Invention) According to the present invention, a fluorescent polyester long-fiber nonwoven fabric that has high fluorescence intensity, good texture, and can be manufactured with good operability is provided.
Claims (1)
するポリエステルに対してペリレン系蛍光染料を０．０
０１重量％以上含有させた組成物で構成された蛍光性ポ
リエステル長繊維からなる不織布。(1) Add 0.0% perylene fluorescent dye to polyalkylene terephthalate or polyester mainly composed of polyalkylene terephthalate.
A nonwoven fabric made of fluorescent polyester long fibers containing a composition containing 0.01% by weight or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63265016A JP2634072B2 (en) | 1988-10-19 | 1988-10-19 | Fluorescent polyester filament non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63265016A JP2634072B2 (en) | 1988-10-19 | 1988-10-19 | Fluorescent polyester filament non-woven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02112459A true JPH02112459A (en) | 1990-04-25 |
| JP2634072B2 JP2634072B2 (en) | 1997-07-23 |
Family
ID=17411410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63265016A Expired - Lifetime JP2634072B2 (en) | 1988-10-19 | 1988-10-19 | Fluorescent polyester filament non-woven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2634072B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478628A (en) * | 1992-05-18 | 1995-12-26 | Minnesota Mining And Manufacturing Company | Non-woven fluorescent retrorefletive fabric |
| JP2020068704A (en) * | 2018-10-31 | 2020-05-07 | ユニチカ株式会社 | Agricultural light reflection sheet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9204598B2 (en) | 2013-05-27 | 2015-12-08 | Saudi Basic Indsutries Corporation | Solar energy funneling using thermoplastics for agricultural applications |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5723653A (en) * | 1980-07-21 | 1982-02-06 | Teijin Ltd | Polyester article capable of converting wavelength of light |
| JPS6081315A (en) * | 1983-10-07 | 1985-05-09 | Chisso Corp | Fluorescent yarn and its preparation |
-
1988
- 1988-10-19 JP JP63265016A patent/JP2634072B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5723653A (en) * | 1980-07-21 | 1982-02-06 | Teijin Ltd | Polyester article capable of converting wavelength of light |
| JPS6081315A (en) * | 1983-10-07 | 1985-05-09 | Chisso Corp | Fluorescent yarn and its preparation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478628A (en) * | 1992-05-18 | 1995-12-26 | Minnesota Mining And Manufacturing Company | Non-woven fluorescent retrorefletive fabric |
| US5695853A (en) * | 1992-05-18 | 1997-12-09 | Minnesota Mining And Manufacturing Company | High visibility fabric and safety vest |
| JP2020068704A (en) * | 2018-10-31 | 2020-05-07 | ユニチカ株式会社 | Agricultural light reflection sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2634072B2 (en) | 1997-07-23 |
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