JPS623223Y2 - - Google Patents
Info
- Publication number
- JPS623223Y2 JPS623223Y2 JP1981132294U JP13229481U JPS623223Y2 JP S623223 Y2 JPS623223 Y2 JP S623223Y2 JP 1981132294 U JP1981132294 U JP 1981132294U JP 13229481 U JP13229481 U JP 13229481U JP S623223 Y2 JPS623223 Y2 JP S623223Y2
- Authority
- JP
- Japan
- Prior art keywords
- base fabric
- polyolefin
- synthetic fibers
- yarn
- weather resistance
- 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.)
- Expired
Links
- 239000004744 fabric Substances 0.000 claims description 40
- 229920000098 polyolefin Polymers 0.000 claims description 34
- 229920002994 synthetic fiber Polymers 0.000 claims description 32
- 239000012209 synthetic fiber Substances 0.000 claims description 32
- -1 polyethylene Polymers 0.000 description 19
- 239000004698 Polyethylene Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 229920000573 polyethylene Polymers 0.000 description 11
- 229920002978 Vinylon Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 150000001336 alkenes Chemical class 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 238000010030 laminating Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229940126062 Compound A Drugs 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920006312 vinyl chloride fiber Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Woven Fabrics (AREA)
Description
従来からポリオレフイン系（ポリエチレン、ポ
リプロピレン等）合成繊維より成る基布にポリオ
レフイン系フイルムを貼り合せたいわゆるターポ
リンは、グランドシート、野積シート、フレキシ
ブルコンテナー等に用いられている。ターポリン
類に要求される力学的性能（引張り強力、引裂強
力等）は基布の物性により得ており、フイルムは
防水性、不通気性、目づれ防止、風合い等の性能
を付与する目的で貼り合わされる。
しかしポリオレフイン系合成繊維より成る基布
はポリオレフイン独特の耐候性不良（日光を受け
ると強度が大巾に低下する）という欠点を有する
ため、長期の使用に耐えられないという重大な欠
陥を有している。もちろんポリオレフイン系合成
繊維の耐候性を改良するために、各種の紫外線吸
収剤を応用することが実施されているが、十分な
効果を上げていない。我々は上記ポリオレフイン
系基布の欠点を改良し、長期間の使用に耐え得る
ポリオレフイン系フイルム貼り合せターポリンを
つくり出すべく鋭意研究の結果、本考案に到達し
たものである。
以下その内容について述べる。
一般にポリオレフイン系以外の合成繊維は耐候
性にすぐれており、中でもポリビニルアルコール
繊維（ビニロン）は抜群の耐候性を示す。またガ
ラス繊維も耐候性は非常に良好である。次いでア
クリロニトリル、ポリエステル、塩化ビニル繊
維、ポリアミド（ナイロン）、塩化ビニリデン繊
維の順に耐候性は不良となるが、ポリオレフイン
系合成繊維に比べると耐候性は十分に高い。耐候
性が高いということは素材が屋外にて直射日光を
受ける状態で使用された場合、力学的性能変化が
少いことを意味する。従つてポリオレフイン系以
外の合成繊維より成る基布にポリオレフイン系フ
イルムを貼り合せたターポリンは屋外の長期使用
に対して引張り強力、引裂強力等の力学的性能変
化が極めて少いという特徴を有するものとなる。
しかしビニロン、ポリエステル、アクリロニトリ
ル、ナイロン等ポリオレフイン系合成繊維以外の
合成繊維より成る基布にポリオレフイン系フイル
ムを貼り合せた場合、基布とフイルム間の接着力
が得られないため、ターポリンが使用中に受ける
動的な運動（風によるはためき＝フラツタリン
グ、折り曲げ、マサツ等）、及び連続荷重（連続
的な張力）により剥離、糸抜け等の現象が現わ
れ、実際の使用時に支障をきたすことになる。本
発明はこの点を解決することを目的としたもので
ある。
すなわち、耐候性の良好な合成繊維より成る基
布にポリオレフイン系フイルムを貼り合せて基布
−フイルム間の十分な接着力を得るため、これら
の合成繊維とポリオレフイン系合成繊維との交撚
糸を用いた基布であつて、その基布表面の50％以
上をポリオレフイン系ヤーンでカバーすることを
特徴としたターポリンにより目的を達成したので
ある。該交撚糸の使用方法としては、耐候性の良
好な合成繊維とポリオレフイン系ヤーンとと交撚
したコード（いわゆる交撚糸）を経糸又は緯糸も
しは経緯両方向の一部または全部に用いる方法で
ある。交撚糸を一部に用いる場合、残りの経糸、
緯糸等は耐候性の良好な合成繊維又はポリオレフ
イン系合成繊維が一般的である。我々の研究結果
によれば、この交撚糸を用いた基布を使用する
と、他の方法、たとえば耐候性の良好な合成繊維
のみからなる糸とポリオレフイン系繊維のみから
なる糸とを交織する方法、よりも高い動的接着力
が得られ本発明に適したターポリンが得られるこ
とがわかつた。これはポリオレフイン系ヤーンに
よる基布のカバー率が同一の場合、交撚糸を用い
た基布の方が、ポリオレフイン系ヤーンによるカ
バー部分と非カバー部分が交織品に比して細かく
分散するため、ポリオレフインフイルムと接着し
ていない部分の大きさが全体的に細かく分散し、
ターポリンの動的な運動に対する耐久性が良好と
なるためであると考えられる。
ここに示す耐候性の良好な合成繊維とはポリオ
レフイン系合成繊維以外の合成繊維であり、ビニ
ロン、ガラス、ポリエステル、アクリロニトリ
ル、ナイロン、塩化ビニル、塩化ビニリデン等よ
り成る紡績糸又はフイラメント糸を意味する。ま
たポリオレフイン系フイルムとは、ポリエチレ
ン、ポリプロピレン、エチレン−プロピレン共重
合体、エチレン−酢酸ビニル共重合体（一般に
EVAと称される）、エチレン−酢酸ビニル−塩化
ビニル共重合物等、オレフインを主体とした高分
子物質の単独又は二者以上の混合物を意味する。
ポリオレフイン系フイルムと基布との貼り合せ法
は、下記の如きいずれの方式も採用可能である。
(i) あらかじめポリオレフインフイルムを製造し
ておき、後に基布と貼り合せる方式（いわゆる
ラミネート方式）
(ii) ポリオレフインフイルムを製造しながら基布
に貼り合せる方式（いわゆる押し出しラミネー
ト方式）
(iii) ポリオレフイン化合物の熱溶融物を基布表面
に塗布した後冷却して基布上でポリオレフイン
フイルムを形成させる方式
ポリオレフインフイルムの貼り合せは、得よう
とするターポリンの要求性能に応じて基布の片面
のみ又は表裏両面に適用することができる。
なお本考案においてオレフイン系合成繊維のカ
バー率とは、基布の織目部分（空隙部分）を除い
た基布の構成繊維表面のみでの値で、オレフイン
系合成繊維X1あるいはオレフイン系合成繊維で
カバーされた部分X2の基布面での全表面をＡと
し、オレフイン系以外の合成繊維Ｙの基布面での
全表面積をＢとするとき、カバー率＝Ａ／Ａ＋Ｂ×100
（％）で表わされる値を意味する。
以下実施例で本考案を説明する。
実施例 １
ビニロンフイラメント1200d／200fをベースに
した基布にポリエチレンフイルムを貼り合せたタ
ーポリンを作成するに際し、基布を構成する経
糸、緯糸にビニロンフイラメントとポリエチレン
スリツトヤーン（フラツトヤーンとも称す）の交
撚糸を用いた。交撚糸は交撚糸表面のポリエチレ
ンヤーンによるカバー率が異なるように作成し
た。交撚糸のポリエチレンヤーンによるカバー率
の変更は、撚糸工程におけるビニロンフイラメン
トとポリエチレンヤーンの給糸速度比を種々変更
して（すなわちポリエチレンヤーンのオーバーフ
イード率を変更して）実施した。こうして得られ
た交撚糸を通常の方法にてレピアルームにより製
織した。この交撚糸から成る基布（第２図ａ）に
押し出しラミネート方式により厚さ50μのポリエ
チレンフイルムを片面のみに貼り合せたターポリ
ン及び厚さ50μのポリエチレンフイルムを基布の
表裏両面に貼り合せたターポリンをそれぞれ作成
した。試験結果を表１に示す。表１より明らかな
如く、交撚糸のポリエチレンヤーンによるカバー
率が50％以上になると基布−フイルム間の動的接
着力が大巾に向上し、実使用に耐え得るものとな
る。
Conventionally, so-called tarpaulins, which are made by laminating a polyolefin film to a base fabric made of polyolefin synthetic fibers (polyethylene, polypropylene, etc.), have been used for ground sheets, open-air sheets, flexible containers, and the like. The mechanical performance required for tarpaulins (tensile strength, tear strength, etc.) is obtained from the physical properties of the base fabric, and the film is pasted to provide properties such as waterproofness, impermeability, anti-slip, and texture. be combined. However, base fabrics made of polyolefin-based synthetic fibers have the disadvantage of poor weather resistance unique to polyolefins (strength decreases significantly when exposed to sunlight), so they have the serious drawback of not being able to withstand long-term use. There is. Of course, in order to improve the weather resistance of polyolefin synthetic fibers, various types of ultraviolet absorbers have been applied, but they have not achieved sufficient effects. We have arrived at the present invention as a result of intensive research to improve the drawbacks of the polyolefin base fabric and create a polyolefin film laminated tarpaulin that can withstand long-term use. The contents will be described below. Generally, synthetic fibers other than polyolefin-based fibers have excellent weather resistance, and among them, polyvinyl alcohol fibers (vinylon) exhibit outstanding weather resistance. Glass fiber also has very good weather resistance. Acrylonitrile, polyester, vinyl chloride fiber, polyamide (nylon), and vinylidene chloride fiber have poor weather resistance in this order, but their weather resistance is sufficiently high compared to polyolefin synthetic fibers. High weather resistance means that there is little change in mechanical performance when the material is used outdoors in direct sunlight. Therefore, a tarpaulin made by laminating a polyolefin film to a base fabric made of synthetic fibers other than polyolefin has the characteristic that mechanical performance changes such as tensile strength and tear strength are extremely small when used outdoors for long periods of time. Become.
However, when a polyolefin film is laminated to a base fabric made of synthetic fibers other than polyolefin synthetic fibers, such as vinylon, polyester, acrylonitrile, and nylon, adhesive strength between the base fabric and the film cannot be obtained, so when the tarpaulin is in use, Due to the dynamic movement (fluttering caused by wind = fluttering, bending, stiffening, etc.) and continuous load (continuous tension), phenomena such as peeling and thread coming out occur, which causes problems during actual use. The present invention aims to solve this problem. In other words, in order to bond a polyolefin film to a base fabric made of synthetic fibers with good weather resistance and obtain sufficient adhesive strength between the base fabric and the film, intertwisted yarns of these synthetic fibers and polyolefin synthetic fibers are used. This objective was achieved by using a tarpaulin that is characterized by having a base fabric with polyolefin yarns covering more than 50% of the surface of the base fabric. The method of using the twisted yarn is to use a cord (so-called twisted yarn) in which a synthetic fiber having good weather resistance and a polyolefin yarn are mixed and twisted for the warp or weft, or a part or all of both warp and warp directions. If a part of the twisted yarn is used, the remaining warp yarn,
The wefts and the like are generally made of synthetic fibers or polyolefin-based synthetic fibers that have good weather resistance. According to our research results, the use of a base fabric using this intertwisted yarn makes it possible to use other methods such as interweaving yarns made only of synthetic fibers with good weather resistance and yarns made only of polyolefin fibers, It has been found that a tarpaulin suitable for the present invention can be obtained that has a higher dynamic adhesive force than the above. This is because when the coverage ratio of the base fabric with the polyolefin yarn is the same, the base fabric using the twisted yarn has a finer distribution of the covered and non-covered areas of the polyolefin yarn than the mixed woven product. The size of the part that is not bonded to the film is finely distributed throughout,
This is thought to be because the tarpaulin has better durability against dynamic movements. The synthetic fibers with good weather resistance mentioned here are synthetic fibers other than polyolefin synthetic fibers, and mean spun yarns or filament yarns made of vinylon, glass, polyester, acrylonitrile, nylon, vinyl chloride, vinylidene chloride, etc. Polyolefin films include polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (generally
EVA), ethylene-vinyl acetate-vinyl chloride copolymer, and other polymeric substances mainly composed of olefins, either singly or as a mixture of two or more thereof.
Any of the following methods can be used to bond the polyolefin film and the base fabric. (i) A method in which a polyolefin in film is manufactured in advance and then laminated to a base fabric (so-called lamination method) (ii) A method in which polyolefine film is manufactured and laminated to a base fabric (so-called extrusion lamination method) (iii) Polyolefin compound A method in which a hot melt is applied to the surface of the base fabric and then cooled to form a polyolefin film on the base fabric.The polyolef in film can be attached only on one side of the base fabric or on both sides depending on the required performance of the tarpaulin to be obtained. Can be applied to both sides. In addition, in this invention, the coverage ratio of olefin-based synthetic fibers refers to the value only on the surface of the constituent fibers of the base fabric, excluding the weave part (void area) of the base fabric, and refers to the coverage of olefin-based synthetic fibers When the total surface area of the portion X 2 covered by ) means the value expressed as . The present invention will be explained below with reference to Examples. Example 1 When creating a tarpaulin in which a polyethylene film is laminated to a base fabric based on vinylon filament 1200d/200f, vinylon filament and polyethylene slit yarn (also referred to as flat yarn) are mixed in the warp and weft yarns that make up the base fabric. I used twisted yarn. The twisted yarns were prepared so that the coverage ratio of the surface of the twisted yarn with the polyethylene yarns was different. The coverage of the twisted yarn by the polyethylene yarn was changed by variously changing the yarn feeding speed ratio of the vinylon filament and the polyethylene yarn in the twisting process (that is, by changing the overfeed rate of the polyethylene yarn). The thus obtained intertwisted yarn was woven using a rapier loom in a conventional manner. A tarpaulin is made by laminating a 50μ thick polyethylene film on only one side of the base fabric (Figure 2a) made of this intertwisted yarn using an extrusion lamination method, and a tarpaulin is made by laminating a 50μ thick polyethylene film on both the front and back sides of the base fabric. were created respectively. The test results are shown in Table 1. As is clear from Table 1, when the coverage ratio of the polyethylene yarns of the twisted yarns is 50% or more, the dynamic adhesion between the base fabric and the film is greatly improved, making it durable for practical use.
【表】
実施例 ２
経糸および緯糸としてビニロンフイラメント
（1200d／200f）とポリプロピレンスリツトヤーン
（1000d）の交撚糸（ポリプロピレンヤーンが完
全に交撚糸の表面をカバーしたカバー率100％の
交撚糸）とビニロンフイラメント糸単独のヤーン
を用いて、表２に示す如き組み合せによりサーキ
ユラールームにて製織した（第２図ｂ）。これら
の基布に厚さ50μのポリプロピレンフイルムを基
布の表裏両面に押し出しラミネート方式により貼
り合せてターポリンを作成した。試験結果を表２
に示す。表２の結果から明らかな如く、ポリプロ
ピレンヤーンによるカバー率が基布表面積の60％
で十分な動的接着性を示す。[Table] Example 2 Cross-twisted yarn of vinylon filament (1200d/200f) and polypropylene slit yarn (1000d) as warp and weft (cross-twisted yarn with 100% coverage where polypropylene yarn completely covers the surface of the twisted yarn) Using a single vinylon filament yarn, weaving was carried out in a circular loom using the combinations shown in Table 2 (Fig. 2b). Tarpaulins were prepared by extruding and laminating polypropylene films with a thickness of 50 μm on both the front and back sides of these base fabrics using a lamination method. Table 2 shows the test results.
Shown below. As is clear from the results in Table 2, the coverage rate by polypropylene yarn is 60% of the surface area of the base fabric.
shows sufficient dynamic adhesion.
【表】
比較例
ポリエステルフイラメント1000d／192f／２の
撚り糸とポリプロピレンスリツトヤーン
（1500d）を経糸、緯糸共に１本おきに打ち込ん
た交織基布をサーキユラールームにより製織し、
この基布（第２図ｃ）に表裏共厚さ50μのポリプ
ロピレンフイルムを押し出しラミネート方式によ
り貼り合せた。試験結果を表３に示す。表３の結
果から、基布としてのオレフインカバー率が高い
にもかかわらず、動的接着力はそれほど高くない
ことが判る。[Table] Comparative example A mixed woven base fabric in which polyester filament 1000d/192f/2 twisted yarn and polypropylene slit yarn (1500d) were inserted into every other warp and weft was woven using a circular loom.
A polypropylene film having a thickness of 50 μm on both front and back sides was laminated to this base fabric (FIG. 2c) by extrusion lamination. The test results are shown in Table 3. From the results in Table 3, it can be seen that the dynamic adhesive strength is not so high despite the high olefin coverage as the base fabric.
【表】【table】
第１図は本考案によるターポリン断面の一例を
示したものである。１は基布経糸を構成する耐候
性の良好なる合成繊維を、２は同経糸のポリオレ
フイン系合成繊維を、３は基布緯糸を構成する耐
候性の良好なる合成繊維を、４は同緯糸のポリオ
レフイン系合成繊維を、５は該基布へ貼り合せた
ポリオレフイン系フイルム層をあらわす。第２図
は本考案各実施例または比較例での基布の構成を
示した図で、X1はオレフイン系合成繊維、X2は
オレフイン系合成繊維でカバーされた部分、Ｙは
オレフイン系以外の合成繊維を示す。
FIG. 1 shows an example of a cross section of a tarpaulin according to the present invention. 1 is a synthetic fiber with good weather resistance constituting the warp of the base fabric, 2 is a polyolefin synthetic fiber of the same warp, 3 is a synthetic fiber with good weather resistance constituting the weft of the base fabric, and 4 is a synthetic fiber with good weather resistance constituting the weft of the base fabric. 5 represents a polyolefin film layer laminated to the base fabric. Figure 2 is a diagram showing the structure of the base fabric in each example or comparative example of the present invention, where X 1 is the olefin synthetic fiber, X 2 is the part covered with the olefin synthetic fiber, and Y is the part other than the olefin synthetic fiber. shows synthetic fibers.
Claims (1)
系合成繊維との交撚糸を経糸又は緯糸もしくは
経緯両方向の一部または全部として用いてなる
基布であり、該基布の表面積の50％以上がポリ
オレフイン系合成繊維によりカバーされた基布
であつて、該基布の片面もしくは両面にポリオ
レフイン系フイルムを貼り合せて成るターポリ
ン。 ２ ポリオレフイン系合成繊維がスリツトヤーン
であることを特徴とする実用新案登録請求の範
囲第１項記載のターポリン。[Scope of Claim for Utility Model Registration] 1. A base fabric using interlaced yarns of synthetic fibers with good weather resistance and polyolefin synthetic fibers as part or all of the warp or weft, or in both warp and weft directions; A tarpaulin consisting of a base fabric with 50% or more of its surface area covered with polyolefin synthetic fibers, and a polyolefin film laminated to one or both sides of the base fabric. 2. The tarpaulin according to claim 1, wherein the polyolefin synthetic fiber is a slit yarn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13229481U JPS5838435U (en) | 1981-09-04 | 1981-09-04 | tarpaulin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13229481U JPS5838435U (en) | 1981-09-04 | 1981-09-04 | tarpaulin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5838435U JPS5838435U (en) | 1983-03-12 |
| JPS623223Y2 true JPS623223Y2 (en) | 1987-01-24 |
Family
ID=29925832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13229481U Granted JPS5838435U (en) | 1981-09-04 | 1981-09-04 | tarpaulin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9323101B2 (en) | 1999-07-02 | 2016-04-26 | E-Vision Smart Optics, Inc. | Electro-active opthalmic lens having an optical power blending region |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0363228U (en) * | 1989-10-26 | 1991-06-20 | ||
| JP6483604B2 (en) * | 2015-06-18 | 2019-03-13 | ブルネエズ株式会社 | Sheet production method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4513427Y1 (en) * | 1967-06-07 | 1970-06-09 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5335275U (en) * | 1976-09-01 | 1978-03-28 | ||
| JPS53131078U (en) * | 1977-03-11 | 1978-10-18 |
-
1981
- 1981-09-04 JP JP13229481U patent/JPS5838435U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4513427Y1 (en) * | 1967-06-07 | 1970-06-09 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9323101B2 (en) | 1999-07-02 | 2016-04-26 | E-Vision Smart Optics, Inc. | Electro-active opthalmic lens having an optical power blending region |
| US9411173B1 (en) | 1999-07-02 | 2016-08-09 | E-Vision Smart Optics, Inc. | Electro-active opthalmic lens having an optical power blending region |
| US9500883B2 (en) | 1999-07-02 | 2016-11-22 | E-Vision Smart Optics, Inc. | Electro-active opthalmic lens having an optical power blending region |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5838435U (en) | 1983-03-12 |
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