JP3075321B2 - Synthetic resin lens and molding method thereof - Google Patents
Synthetic resin lens and molding method thereofInfo
- Publication number
- JP3075321B2 JP3075321B2 JP2789793A JP2789793A JP3075321B2 JP 3075321 B2 JP3075321 B2 JP 3075321B2 JP 2789793 A JP2789793 A JP 2789793A JP 2789793 A JP2789793 A JP 2789793A JP 3075321 B2 JP3075321 B2 JP 3075321B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- lens
- molding
- sheets
- mold
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は合成樹脂製レンズ、及び
その成形法に関するものである。本発明で得られた合成
樹脂製レンズは、眼鏡レンズ、ＯＡ機器のレンズ等の光
学用レンズに広く適用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin lens and a molding method thereof. The synthetic resin lens obtained in the present invention is widely applied to optical lenses such as spectacle lenses and lenses of OA equipment.
【０００２】[0002]
【従来の技術】合成樹脂製レンズは、無機ガラスと比較
して軽量であり、かつ耐衝撃性に優れているという特徴
を有するが、表面硬度が低く、成形の際の光学歪が大き
くなるという欠点がある。そのためレンズ表面を成形後
ハードコート処理する必要があるが、この場合工程が多
くなり、耐溶剤性が低いためにクラックを生じ易く、物
性が低下する欠点も有する。成形時の金型温度を高くす
ると、レンズの光学歪を小さくすることができるがこの
場合冷却時間が長くなるという欠点が生ずる。従って、
冷却速度を制御するのが望ましいが、そのための特別な
装置が必要となる。2. Description of the Related Art A lens made of a synthetic resin is lighter in weight and superior in impact resistance than inorganic glass, but has a low surface hardness and a large optical distortion during molding. There are drawbacks. For this reason, it is necessary to perform a hard coat treatment after molding the lens surface. However, in this case, the number of steps is increased, cracks are easily generated due to low solvent resistance, and physical properties are deteriorated. Increasing the mold temperature during molding can reduce the optical distortion of the lens, but in this case, there is a disadvantage that the cooling time is lengthened. Therefore,
It is desirable to control the cooling rate, but special equipment is required for that.
【０００３】又、レンズをサングラスとして使用する場
合、スキー等の屋外スポーツにおいては、紫外線等の光
線量を減じる必要がある。更に、寒冷地や高い湿度下に
使用する場合、曇りを防止する必要もある。したがっ
て、必要に応じ、上記光線を緩和させる塗料や防曇塗料
をハードコートの反対面に塗装処理するために、別工程
が更に必要となり工程数が増加するという問題点があ
る。When the lens is used as sunglasses, it is necessary to reduce the amount of light such as ultraviolet rays in outdoor sports such as skiing. Further, when used in a cold region or under high humidity, it is necessary to prevent fogging. Therefore, there is a problem that a separate step is further required in order to apply a coating for relaxing the light rays or an anti-fog coating on the opposite surface of the hard coat, if necessary, and the number of steps is increased.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、少な
い工程数で表面硬度、防曇性等の機能性を有する光学歪
が少ない合成樹脂製レンズ、及びその成形方法を提供す
ることにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a synthetic resin lens having functionalities such as surface hardness and anti-fogging property with a small number of steps and low optical distortion, and a method of molding the same. .
【０００５】[0005]
【課題を解決するための手段】本発明者らは、合成樹脂
製レンズの製造方法について鋭意研究を重ねた結果、成
形機用金型内に溶融樹脂を射出後、直ちに可動性のキャ
ビティを移動させてレンズの面方向より圧縮して光学歪
みを少なくすることにより上記課題が解決されることを
見出し、本発明を完成させた。Means for Solving the Problems The inventors of the present invention have conducted intensive studies on a method of manufacturing a synthetic resin lens, and as a result, have moved a movable cavity immediately after injecting a molten resin into a molding machine mold. The inventors have found that the above-mentioned problem can be solved by reducing the optical distortion by compressing the lens in the surface direction, thereby completing the present invention.
【０００６】すなわち、本発明は、合成樹脂製レンズで
あって、２枚の合成樹脂（Ａ）製シートを成形用金型の
両面に装着し、型締後合成樹脂（Ａ）に溶着する合成樹
脂（Ｂ）を加熱溶融して上記２枚のシート間に充填後、
樹脂流路を閉鎖し、直ちに可動性のキャビティを移動さ
せてレンズの面方向より圧縮し、成形して得られた光学
歪の少ない合成樹脂製レンズ及びその成形方法に関する
発明である。That is, the present invention relates to a synthetic resin lens in which two synthetic resin (A) sheets are mounted on both sides of a molding die, and are welded to the synthetic resin (A) after clamping. After heating and melting the resin (B) and filling it between the two sheets,
The present invention relates to a synthetic resin lens having a small optical distortion obtained by closing a resin flow path, immediately moving a movable cavity to compress the lens in a surface direction, and forming the lens, and a method of molding the lens.
【０００７】本発明において、合成樹脂（Ａ）製シート
の材料として、透明で耐衝撃性に優れた硬質性熱可塑性
樹脂が使用可能であり、具体的には芳香族ポリカーボネ
ート、ポリメチルメタクリレート等が例示できる。In the present invention, as a material of the sheet made of the synthetic resin (A), a hard thermoplastic resin which is transparent and excellent in impact resistance can be used, and specifically, aromatic polycarbonate, polymethyl methacrylate and the like can be used. Can be illustrated.
【０００８】本発明で使用する合成樹脂（Ａ）製シート
として、その厚みが０．１ｍｍ〜３．０ｍｍのものを使
用するのが望ましく、この厚みのものを使用することに
より表面外観性及び成形性を向上することができる。厚
みが０．１ｍｍ未満のシートを使用すると、最終充填部
にシート表面に皺が発生する場合があり、一方、厚みが
３．０ｍｍを超えるシートを使用すると金型キャビティ
形状に真空成形等で賦形する際、成形性が低下する欠点
が生ずる場合がある。The synthetic resin (A) sheet used in the present invention preferably has a thickness of 0.1 mm to 3.0 mm. Performance can be improved. When a sheet having a thickness of less than 0.1 mm is used, wrinkles may be generated on the sheet surface in the final filling portion. On the other hand, when a sheet having a thickness of more than 3.0 mm is used, the sheet is formed into a mold cavity shape by vacuum molding or the like. When shaping, there may be a drawback that the moldability is reduced.
【０００９】本発明において、２枚の合成樹脂（Ａ）製
シート間に射出する合成樹脂（Ｂ）として、シートと溶
着可能なものが使用できるが、一般的には合成樹脂
（Ａ）と同組成物のものを使用すると容易に接着が可能
である。In the present invention, as the synthetic resin (B) injected between two synthetic resin (A) sheets, a synthetic resin (B) that can be welded to a sheet can be used. The use of the composition allows easy adhesion.
【００１０】本発明の成形品に偏光性能、赤外線吸収性
能、紫外線吸収性能、フォトクロミック性能を付与する
ために、合成樹脂（Ａ）製シートのいずれか一方、又は
これらの双方に偏光性能、赤外線吸収性能、紫外線吸収
性能、フォトクロミック性能を有す添加剤等を混合して
使用することができる。上記添加剤等を混合した場合で
も、合成樹脂（Ａ）製シートと成形材である合成樹脂
（Ｂ）層との接着強度を必要な値にすることが可能であ
る。例えば、合成樹脂（Ａ）と（Ｂ）の双方にポリカー
ボネートを使用した場合でも、両層間の接着強度は９０
度剥離強度で５ｋｇ／ｃｍ以上とすることが可能であ
る。また合成樹脂（Ａ）と（Ｂ）の添加剤の種類が異な
る場合も接着性能は低下せず、さらにレンズとしての性
能は向上される。In order to impart polarizing performance, infrared absorbing performance, ultraviolet absorbing performance, and photochromic performance to the molded article of the present invention, one or both of the synthetic resin (A) sheets may be provided with polarizing performance, infrared absorbing performance. Additives having performance, ultraviolet absorption performance, and photochromic performance can be mixed and used. Even when the above additives and the like are mixed, the adhesive strength between the synthetic resin (A) sheet and the synthetic resin (B) layer as a molding material can be set to a required value. For example, even when polycarbonate is used for both the synthetic resins (A) and (B), the adhesive strength between both layers is 90.
The peel strength can be 5 kg / cm or more. Also, when the types of additives of the synthetic resins (A) and (B) are different, the adhesive performance does not decrease, and the performance as a lens is further improved.
【００１１】本発明において、合成樹脂（Ａ）の表面硬
度を向上する場合、使用する合成樹脂（Ａ）製シートの
片面にマスキングフィルムを貼り、公知技術であるディ
ップ法、スプレー法、フローコーター法等で処理するこ
とができる。従来法では、レンズ形状にした成形品に上
記の表面処理を行っていたが、レンズは曲面を有すため
にハードコート液の液だまりが生じ、歩留りが低かっ
た。本発明で使用するシートは、平板時に塗装処理され
たシートであるためハードコート液の液だまり等もな
く、綺麗な外観のために表面外観性能の要求されるレン
ズの成形には特に適している。In the present invention, when the surface hardness of the synthetic resin (A) is to be improved, a masking film is stuck on one surface of a sheet made of the synthetic resin (A) to be used, and a dip method, a spray method, a flow coater method known in the art. And so on. In the conventional method, the above-described surface treatment is performed on a lens-shaped molded product. However, since the lens has a curved surface, a pool of a hard coat liquid is generated, and the yield is low. Since the sheet used in the present invention is a sheet that has been subjected to a coating treatment at the time of flattening, there is no pool of a hard coat liquid or the like, and it is particularly suitable for molding a lens that requires surface appearance performance for a beautiful appearance. .
【００１２】レンズへの表面処理として、上記ハードコ
ート処理の他に、更に防曇膜、熱反射性能等の他の機能
も付与することができる。本発明の成形品に上記の機能
性膜を少なくともレンズのハードコート面の反対側に設
けることにより、レンズに多機能を付与できる。機能性
膜の付与方法は公知の技術、例えば特開昭６０−２５０
９２７号公報、特開昭６０−２５３５１８号公報、特開
昭６０−５２３５１６号公報、特開昭６１−５９１０号
公報等に記載の方法により容易に行うことができる。As a surface treatment for the lens, other functions such as an anti-fogging film and heat reflection performance can be provided in addition to the above hard coating treatment. By providing the above-mentioned functional film on at least the side opposite to the hard coat surface of the lens in the molded article of the present invention, multi-function can be imparted to the lens. The method of providing the functional film is a known technique, for example, Japanese Patent Application Laid-Open No. 60-250.
927, JP-A-60-253518, JP-A-60-523516, JP-A-61-5910 and the like.
【００１３】通常の射出成形では、成形材料が金型内に
射出されると、溶融樹脂が金型との温度差の影響で急冷
される結果生ずる光学歪と、溶融樹脂が固化に至るまで
の冷却過程で急冷される結果生ずる光学歪とがあり、特
に試料厚みの大きい成形品では、冷却過程での光学歪が
顕著となる。上記光学歪を最小限とするために、低圧射
出成形機を用い金型温度を高くし、冷却過程では除冷し
ながら成形を行う方法が考えられる。しかし、上記方法
でも光学歪を十分に小さくすることは不可能であり、更
に低圧射出成形機と高価な冷却速度調整機を用いなけれ
ばならず、またサイクル的にも長くなるためコストアッ
プの問題が生じていた。In ordinary injection molding, when a molding material is injected into a mold, optical distortion resulting from rapid cooling of the molten resin due to the temperature difference from the mold and the time required for the molten resin to solidify. There is optical distortion resulting from rapid cooling in the cooling process. Particularly, in a molded product having a large sample thickness, the optical distortion in the cooling process becomes remarkable. In order to minimize the optical distortion, a method is conceivable in which the mold temperature is increased using a low-pressure injection molding machine, and the molding is performed while cooling in the cooling process. However, even with the above method, it is impossible to sufficiently reduce the optical distortion, and furthermore, a low-pressure injection molding machine and an expensive cooling rate adjuster must be used. Had occurred.
【００１４】合成樹脂は熱伝導率の悪い断熱材であり、
一般に成形樹脂の急冷を抑える効果を有する。本発明に
おいて、金型表面に２枚の合成樹脂（Ａ）製シートを装
着して射出成形するので、射出された樹脂は金型内で急
冷される事がないため、金型温度を高温にしなくとも充
填時の光学歪は低減され、また冷却過程においても金型
温度を低温とすることができ、冷却時間の短縮と光学歪
を少なくすることが可能となる。Synthetic resin is a heat insulating material having poor thermal conductivity.
Generally, it has an effect of suppressing rapid cooling of the molding resin. In the present invention, since two synthetic resin (A) sheets are mounted on the mold surface and injection-molded, the injected resin is not rapidly cooled in the mold. At least, the optical distortion at the time of filling is reduced, and the temperature of the mold can be lowered even in the cooling process, so that the cooling time can be shortened and the optical distortion can be reduced.
【００１５】本発明において、上述した機能性膜を片面
に付与したシートは、成形金型に装着する際、機能性膜
を金型面に向けて装着することで、成形過程で同時に表
面処理膜を有す成形品が得られる。本発明における金型
へのシートの装着方法として、プレス機械で金型キャビ
ティ形状に打ち抜いて得られたシートのゲートやタブ部
に予め穴空けしておき、金型に設けたピンに固定した
り、シートタブ部に鉄片を貼付け、同位置の金型部に磁
石を埋め込んで装着する公知の方法で装着するか、また
は金型キャビティ形状に予め真空成形等で賦形したシー
トを装着して成形を行う方法が例示できる。In the present invention, when the above-mentioned sheet provided with the functional film on one surface is mounted on a molding die, the functional film is mounted toward the die surface so that the surface-treated film is simultaneously formed in the molding process. Is obtained. As a method of mounting a sheet on a mold in the present invention, a hole is previously formed in a gate or a tab portion of a sheet obtained by punching into a mold cavity shape by a press machine, and the sheet is fixed to a pin provided in the mold. Attaching an iron piece to the sheet tab portion, embedding a magnet in the mold portion at the same position, mounting by a known method of mounting, or mounting a sheet preformed in a mold cavity shape by vacuum forming or the like, and molding. An example of a method for performing the method can be given.
【００１６】成形条件は公知の条件でも良いが、好適に
は樹脂温度を２６０℃以上とすることで接着強度は完全
なものが得られ、また金型温度も３０℃から１２０℃の
範囲とすることで冷却時間を短縮できる。金型内に樹脂
を充填後、直ちに稼働性キャビティを移動させてレンズ
の面方向より圧縮するが、この際の圧縮圧として２００
ｋｇｆ／ｃｍ2 以上の圧力を加えるのが望ましい。ま
た、圧縮圧をあまりにも過大とすると成形品により、成
形歪みが発生する場合もあるので、一般的には１０００
ｋｇｆ／ｃｍ2 以下で行うのが望ましい。上記圧力で圧
縮することで薄肉レンズの成形も容易に行え、また射出
成形と比較して表面転写の向上が可能である。The molding condition may be a known condition. Preferably, the resin temperature is set to 260 ° C. or higher to obtain a perfect adhesive strength, and the mold temperature is also set to a range from 30 ° C. to 120 ° C. This can reduce the cooling time. Immediately after the mold is filled with the resin, the working cavity is moved and compressed from the lens surface direction.
It is desirable to apply a pressure of at least kgf / cm 2 . If the compression pressure is too high, molding distortion may occur depending on the molded product.
It is desirable to carry out at a rate of not more than kgf / cm 2 . By compressing with the above pressure, molding of a thin lens can be easily performed, and surface transfer can be improved as compared with injection molding.
【００１７】[0017]
【実施例】以下、実施例により本発明の詳細を説明す
る。光学歪とレンズ表面外観についての評価を行った。 （１）使用した成形機：ハヤブサ鉄工所（株）製、型
式；ＨＰ−１８０ （２）使用した光学歪の複屈折測定器：溝尻光学社製、
型式；エリプソメーターＡＶ−３６Ｌ、測定はレンズ中
央部で行った。 （３）光学歪の評価法：複屈折５０ｎｍ以下では光学歪
は少なく良好と判断し、５０ｎｍを超えると光学歪が大
で不可とした。 （４）レンズ表面外観：外観目視にて評価した。The present invention will be described below in detail with reference to examples. The optical distortion and the lens surface appearance were evaluated. (1) Molding machine used: Hayabusa Iron Works Co., Ltd., Model: HP-180 (2) Birefringence measuring device of optical strain used: Mizojiri Optical Co., Ltd.
Model: Ellipsometer AV-36L, measurement was performed at the center of the lens. (3) Evaluation method of optical distortion: When the birefringence was 50 nm or less, the optical distortion was judged to be small and good. (4) Lens surface appearance: Appearance was evaluated visually.
【００１８】実施例１ 金型としてキャビティ厚み１５〜２０ｍｍ、直径８０ｍ
ｍφのキャビティを有す凸レンズ用金型を用いた。この
金型の両キャビティは摺動性があり、内部には油圧シリ
ンダーが組み込まれているために、樹脂を射出後油圧シ
リンダーを駆動させることで面方向より圧縮できる構造
の金型である。以下の手順で成形をおこなった。金型の
油圧シリンダーを駆動させ、可動性キャビティの位置を
キャビティ厚み２０ｍｍとなる位置とした。次いで金型
の両キャビティ面にシート厚み０．５ｍｍのポリカーボ
ネートシート（片面にフローコーター法でシリコン系ハ
ードコートを塗布したハードコートシート（三菱瓦斯化
学（株）製、商品名：ユーピロンシートＭＲ０Ｘ）でプ
レス機械でキャビティ形状に切断したもの）を装着し
た。Example 1 A mold having a cavity thickness of 15 to 20 mm and a diameter of 80 m was used.
A convex lens mold having a cavity of mφ was used. Since both cavities of the mold have slidability and a hydraulic cylinder is incorporated therein, the mold has a structure that can be compressed in a plane direction by driving the hydraulic cylinder after injecting the resin. Molding was performed in the following procedure. The hydraulic cylinder of the mold was driven to set the movable cavity at a position where the cavity thickness became 20 mm. Next, a polycarbonate sheet having a sheet thickness of 0.5 mm on both cavity surfaces of the mold (a hard coat sheet having one side coated with a silicon-based hard coat by a flow coater method (Mitsubishi Gas Chemical Co., Ltd., trade name: Iupilon sheet MR0X)) was used. Cut into a cavity shape by a press machine).
【００１９】分子量１６，０００のポリカーボネート樹
脂材料（三菱瓦斯化学（株）製、商品名：ユーピロンＨ
−４０００）を樹脂温度３００℃、金型温度６０℃、射
出圧力（ゲージ圧力：４００ｋｇｆ／ｃｍ2 ）の条件で
射出注入後、直ちに油圧シリンダーをキャビティ面圧力
５００ｋｇｆ／ｃｍ2 で駆動させ、該成形材料を圧縮し
て成形した。該成形材料とシートは成形の熱、圧力によ
り一体化され、表面にはハードコートを形成させた積層
レンズ成形品を得た。評価結果は表１に示す。Polycarbonate resin material having a molecular weight of 16,000 (manufactured by Mitsubishi Gas Chemical Company, Inc., trade name: Iupilon H)
-4000) The resin temperature 300 ° C., mold temperature of 60 ° C., injection pressure (gauge pressure: after the injection implanted under the conditions of 400 kgf / cm 2), was immediately drive the hydraulic cylinder in the cavity surface pressure 500 kgf / cm 2, molding The material was compressed and formed. The molding material and the sheet were integrated by the heat and pressure of molding to obtain a laminated lens molded product having a hard coat formed on the surface. The evaluation results are shown in Table 1.
【００２０】比較例１ 実施例１と同じ金型を用いて、シートの装着をせずに同
成形材料（三菱瓦斯化学（株）製、商品名：ユーピロン
Ｈ−４０００）を射出後、実施例と同様の成形条件で圧
縮した。次いで成形した成形品にハードコート処理を行
うために、ハードコート溶液をディップ法により、成形
品表面にハードコート処理を行い、１３０℃の乾燥機中
でハードコート膜を焼き付けた。評価結果は表１に示
す。Comparative Example 1 Using the same mold as in Example 1, the same molding material (trade name: Iupilon H-4000, manufactured by Mitsubishi Gas Chemical Co., Ltd.) was injected without mounting a sheet. Compressed under the same molding conditions. Next, in order to perform a hard coat treatment on the molded article, a hard coat treatment was performed on the surface of the molded article by dipping a hard coat solution, and the hard coat film was baked in a dryer at 130 ° C. The evaluation results are shown in Table 1.
【表１】 項目 実施例１ 比較例１ 光学歪 少 多 複屈折（ｎｍ） ３０．４ １１７．１ 外 観 ・液だまりなし ・液だまり多い ・埃付着無 ・埃付着あり 評 価 優 不可 [Table 1] Item Example 1 Comparative Example 1 Low optical distortion Multi- birefringence (nm) 30.4 117.1 Appearance・ No liquid pool ・ Many liquid pool ・ No dust attached ・ Dust attached Evaluation Excellent Not possible
【００２１】[0021]
（１）通常の金型温度でも光学歪が低減された。 （２）特殊な設備を使用せずとも、光学歪を低減でき、
品質向上とコストダウンの効果が得られた。 （３）成形時にハードコート膜を付与できるために、後
工程の省略と液だまり不良が改善できた。(1) Optical distortion was reduced even at normal mold temperature. (2) Optical distortion can be reduced without using special equipment,
The effects of quality improvement and cost reduction were obtained. (3) Since a hard coat film can be provided at the time of molding, the omission of a post-process and the improvement of a liquid pool defect can be improved.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−250927（ＪＰ，Ａ) 特開 昭50−21054（ＪＰ，Ａ) 特開 昭58−215319（ＪＰ，Ａ) 特開 平４−366612（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 43/00 - 43/58 B29C 45/00 - 45/84 G02B 1/00 - 1/12 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-250927 (JP, A) JP-A-50-21054 (JP, A) JP-A-58-215319 (JP, A) JP-A-4- 366612 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B29C 43/00-43/58 B29C 45/00-45/84 G02B 1/00-1/12
Claims (7)
樹脂（Ａ）製シートを成形用金型の両面に装着し、型締
後合成樹脂（Ａ）に溶着する合成樹脂（Ｂ）を加熱溶融
して上記２枚のシート間に充填後、樹脂流路を閉鎖し、
直ちに可動性のキャビティを移動させてレンズの面方向
より２００〜１０００ｋｇｆ／ｃｍ 2 の圧力で圧縮し、
成形して得られた光学歪の少ない合成樹脂製レンズ。1. A synthetic resin lens, wherein two synthetic resin (A) sheets are mounted on both sides of a molding die, and the synthetic resin (B) is welded to the synthetic resin (A) after mold clamping. After heating and filling between the two sheets, the resin flow path is closed,
Immediately move the movable cavity and compress it with a pressure of 200 to 1000 kgf / cm 2 from the surface direction of the lens,
A synthetic resin lens with low optical distortion obtained by molding.
とも一方が偏光性能もしくは紫外線吸収性能を向上する
添加剤を少なくとも１種以上添加されたポリカーボネー
トである請求項１に記載の合成樹脂製レンズ。2. The synthetic resin according to claim 1, wherein at least one of the two sheets made of the synthetic resin (A) is a polycarbonate to which at least one additive for improving the polarization performance or the ultraviolet absorption performance is added. lens.
とも一方のシートの金型側表面が、ハードコート、熱線
反射性能、もしくは防曇性能の少なくとも一つ以外の機
能性を付与したポリカーボネートであることを特徴とす
る請求項１に記載の合成樹脂製レンズ。3. A polycarbonate in which at least one of two sheets made of synthetic resin (A) has a mold-side surface provided with a function other than at least one of hard coat, heat ray reflection performance, and anti-fog performance. The synthetic resin lens according to claim 1, wherein:
２枚の合成樹脂（Ａ）製シートを成形用金型の両面に装
着し、型締後合成樹脂（Ａ）に溶着する合成樹脂（Ｂ）
を加熱溶融して上記２枚のシート間に充填後、樹脂流路
を閉鎖し、直ちに可動性のキャビティを移動させてレン
ズの面方向より２００〜１０００ｋｇｆ／ｃｍ 2 の圧力
で圧縮し、光学歪を低減することを特徴とする合成樹脂
製レンズの成形方法。4. A method for molding a synthetic resin lens, comprising:
Two synthetic resin (A) sheets are attached to both sides of a molding die, and after clamping, the synthetic resin (B) is welded to the synthetic resin (A).
Is heated and melted and filled between the two sheets, the resin flow path is closed, and the movable cavity is immediately moved to apply a pressure of 200 to 1000 kgf / cm 2 from the surface direction of the lens.
A method of molding a lens made of synthetic resin, characterized by reducing optical distortion by compression.
の厚みが、それぞれ０．１〜３．０ｍｍである請求項４
に記載の合成樹脂製レンズの成形方法。5. The two synthetic resin (A) sheets used each have a thickness of 0.1 to 3.0 mm.
3. The method for molding a synthetic resin lens according to item 1.
とも一方が偏光性能及、紫外線吸収性能を有する添加剤
を少なくとも１種以上添加されたポリカーボネートであ
る請求項４に記載の合成樹脂製レンズの成形方法。6. The synthetic resin according to claim 4, wherein at least one of the two synthetic resin (A) sheets is a polycarbonate to which at least one additive having a polarizing property and an ultraviolet absorbing property is added. Lens molding method.
表面は、ハードコート、熱線反射性能、防曇性能の少な
くとも一つ以外の機能性を付与したポリカーボネートで
あり、かつ該機能性を有する膜は成形機用金型内で金型
面を向くように装着されたものであることを特徴とする
請求項４に記載の合成樹脂製レンズの成形方法。7. One surface of the synthetic resin (A) sheet to be used is a polycarbonate provided with a function other than at least one of a hard coat, a heat ray reflection performance and an anti-fog performance, and has the functionality. 5. The method of molding a synthetic resin lens according to claim 4, wherein the film is mounted in the molding machine mold so as to face the mold surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2789793A JP3075321B2 (en) | 1993-02-17 | 1993-02-17 | Synthetic resin lens and molding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2789793A JP3075321B2 (en) | 1993-02-17 | 1993-02-17 | Synthetic resin lens and molding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06238689A JPH06238689A (en) | 1994-08-30 |
| JP3075321B2 true JP3075321B2 (en) | 2000-08-14 |
Family
ID=12233682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2789793A Expired - Fee Related JP3075321B2 (en) | 1993-02-17 | 1993-02-17 | Synthetic resin lens and molding method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3075321B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7048997B2 (en) | 1995-03-03 | 2006-05-23 | Vision-Ease Lens | Production of optical elements |
| WO2005023529A2 (en) | 2003-09-09 | 2005-03-17 | Vision-Ease Lens, Inc. | Photochromic polyurethane laminate |
| JP6868337B2 (en) * | 2015-02-10 | 2021-05-12 | Ｍｃｃアドバンスドモールディングス株式会社 | Film insert molded product and its manufacturing method |
| US11002883B2 (en) | 2015-11-04 | 2021-05-11 | Mitsubishi Gas Chemical Company, Inc. | Thermoplastic resin composition and molded article thereof |
-
1993
- 1993-02-17 JP JP2789793A patent/JP3075321B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06238689A (en) | 1994-08-30 |
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