JPH0240487B2 - - Google Patents
Info
- Publication number
- JPH0240487B2 JPH0240487B2 JP57035892A JP3589282A JPH0240487B2 JP H0240487 B2 JPH0240487 B2 JP H0240487B2 JP 57035892 A JP57035892 A JP 57035892A JP 3589282 A JP3589282 A JP 3589282A JP H0240487 B2 JPH0240487 B2 JP H0240487B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding
- synthetic resin
- thin film
- glass
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2883/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as mould material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0022—Bright, glossy or shiny surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、合成樹脂成形品との離型性に優れ、
しかも鏡面性のよい合成樹脂成形品を得ることの
できる合成樹脂成形用型に関するものである。[Detailed description of the invention] [Industrial application field] The present invention has excellent mold releasability from synthetic resin molded products,
Moreover, the present invention relates to a synthetic resin molding mold that can produce synthetic resin molded products with good specularity.
合成樹脂の成形において、成形品を型から取出
す場合、エポキシ樹脂、フエノール樹脂等のよう
に強い接着性を有するものは型からの離型性が悪
い。このような場合、成形用型に離型剤を塗布す
る方法が一般的であるが、成形品に離型剤による
くもり発生したり、十分な鏡面が得られないこと
が多い。
In molding synthetic resins, when removing a molded article from a mold, materials with strong adhesive properties such as epoxy resins and phenolic resins have poor releasability from the mold. In such cases, a method of applying a mold release agent to the mold is common, but the molded product often becomes cloudy due to the mold release agent, and a sufficient mirror surface cannot be obtained.
特に、合成樹脂製の光学部品を成形する場合に
は、通常ガラス等のすぐれた鏡面性を有する型を
用い、この型のもつ鏡面性を成形品に転写させる
方法が用いられる。しかしながら、例えばエポキ
シ樹脂成形品とガラス型の場合、両者の密着力が
強いので、エポキシ樹脂の硬化後その成形品はガ
ラス型から容易に離型しない。また、エポキシ樹
脂の成形収縮による応力のため、ガラス型の方に
割れが発生することが多い。かかる合成樹脂成形
品と成形用型との離型を良くするために、前記の
ように型に離型剤を塗布する方法があるが、この
方法では離型剤が成形品へ転写されることにより
成形品にくもりが発生するので、光学部品として
は到底満足しうるものは得られない。 In particular, when molding optical parts made of synthetic resin, a method is usually used in which a mold having excellent specularity, such as glass, is used and the specularity of this mold is transferred to the molded product. However, in the case of an epoxy resin molded article and a glass mold, for example, the adhesion between the two is strong, so that the molded article is not easily released from the glass mold after the epoxy resin is cured. Furthermore, cracks often occur in the glass mold due to stress caused by molding shrinkage of the epoxy resin. In order to improve the mold release between such synthetic resin molded products and the molding mold, there is a method of applying a mold release agent to the mold as described above, but with this method, the mold release agent is transferred to the molded product. As a result, cloudiness occurs in the molded product, making it impossible to obtain a completely satisfactory optical component.
本発明は、かかる欠点を改良すべく鋭意検討し
てなされたもので、合成樹脂成形品と型との離型
を容易にし、かつ型のもつ鏡面性を成形品に転写
できると共に、得られた成形品の表面にくもり等
を生じることのない合成樹脂成形用の型を提供す
ることを目的としたものである。
The present invention was developed after intensive study to improve these drawbacks, and it facilitates the release of the synthetic resin molded product from the mold, and also allows the specularity of the mold to be transferred to the molded product. The object of the present invention is to provide a mold for molding a synthetic resin that does not cause clouding or the like on the surface of a molded product.
即ち本発明は、成形用型の成形面に、真空蒸着
法、イオンプレーテイング法又はスパツタリング
法により、MgF2、MoS2、SiO2、SiO等の無機化
合物よりなる薄膜を形成した合成樹脂成形用型で
あり、薄膜は型と強固に密着している。
That is, the present invention provides a synthetic resin molding material in which a thin film of an inorganic compound such as MgF 2 , MoS 2 , SiO 2 , SiO, etc. is formed on the molding surface of a molding die by vacuum evaporation, ion plating, or sputtering. The thin film is firmly attached to the mold.
本発明において、合成樹脂成形用型の成形面に
形成される薄膜の材料として無機化合物が使用さ
れるが、その中でもMgF2、MoS2、SiO2、Sio等
が、合成樹脂との離型性及び金属、ガラス、セラ
ミツク等からなる型との密着性においてすぐれて
いる。かかる薄膜の厚さは、成形品の材質、用
途、必要特性等により異なるが、一般的には500
Å〜3000Åが適当である。 In the present invention, inorganic compounds are used as materials for the thin film formed on the molding surface of the synthetic resin molding die, and among these, MgF 2 , MoS 2 , SiO 2 , Sio, etc. have good mold releasability from the synthetic resin. It also has excellent adhesion to molds made of metal, glass, ceramic, etc. The thickness of such a thin film varies depending on the material, application, required characteristics, etc. of the molded product, but generally it is 500 mm.
Å to 3000 Å is suitable.
本発明において、合成樹脂の成形方法は、圧縮
成形、移送成形、射出成形、注型等いかなる方法
でもよい。また、合成樹脂も特に制限されるもの
ではないが、型に使用される材料と密着性の大き
いエポキシ樹脂、フエノール樹脂、ウレタン樹
脂、ポリエステル樹脂、ジアリルフタレート樹脂
等を使用する場合に本発明は効果的で、エポキシ
樹脂、ポリエステル樹脂等により光学部品を成形
する場合において特に有効である。 In the present invention, the synthetic resin may be molded by any method such as compression molding, transfer molding, injection molding, and casting. In addition, the synthetic resin is not particularly limited, but the present invention is effective when using epoxy resin, phenol resin, urethane resin, polyester resin, diallyl phthalate resin, etc., which have high adhesion to the material used for the mold. It is particularly effective when molding optical parts from epoxy resin, polyester resin, etc.
本発明の型に合成樹脂を注入して成形すると、
合成樹脂と型に形成された薄膜との密着力は、型
と薄膜との密着力に比較してはるかに小さいの
で、この薄膜は成形時において離型膜として働
く。特に光学部品のように鏡面性が強く要求され
る場合には、型の有する鏡面性が全く損なわれる
ことなく、成形品に転写されるので効果的であ
る。 When synthetic resin is injected into the mold of the present invention and molded,
Since the adhesion between the synthetic resin and the thin film formed on the mold is much smaller than the adhesion between the mold and the thin film, this thin film acts as a mold release film during molding. This is particularly effective in cases where specularity is strongly required, such as in optical parts, because the specularity of the mold is not impaired at all and is transferred to the molded product.
次に本発明の実施例を示す。 Next, examples of the present invention will be shown.
実施例 １
鏡面を有するガラス板にスパツタリングにより
MgF2の薄膜（厚さ2000Å）を形成し、このガラ
ス板により注型用型をつくつた。この型に透明エ
ポキシ樹脂を注型し硬化させ。注型品はガラスを
破損することなく容易に離型し、注型品のMgF2
と接した面はガラスの鏡面が正確に転写されてお
り、くもり等の欠陥は全くなかつた。Example 1 Sputtering on a glass plate with a mirror surface
A thin film of MgF 2 (2000 Å thick) was formed, and a casting mold was made from this glass plate. Pour transparent epoxy resin into this mold and let it harden. Cast products can be easily released from the mold without damaging the glass, and MgF 2 of cast products can be easily released from the mold without damaging the glass.
The mirror surface of the glass was accurately transferred to the surface in contact with the glass, and there were no defects such as cloudiness.
実施例 ２〜５
実施例１においてMgF2の代わりに、MoS2、
SiO2、SiOをそれぞれ使用した場合も、同様の結
果であた。Examples 2 to 5 In Example 1, instead of MgF 2 , MoS 2 ,
Similar results were obtained when SiO 2 and SiO were used, respectively.
比較例
実施例１〜５の如き無機化合物の薄膜を形成し
ていないガラス板により注型用型をつくり、これ
に実施例と同じ透明エポキシ樹脂を注型し硬化さ
せた。注型品は離型困難で、無理に離型しようと
したためガラスが破損してしまつた。Comparative Example A casting mold was made from a glass plate on which a thin film of an inorganic compound such as those in Examples 1 to 5 was not formed, and the same transparent epoxy resin as in the Example was poured into the mold and cured. It was difficult to release the cast product from the mold, and trying to force it out caused the glass to break.
以上のように、本発明による成形用型を用いる
と、成形面に離型性に優れた薄膜が形成されてい
るので、エポキシ樹脂等のような密着性の大きい
合成樹脂を成形する場合でも、得れた合成樹脂成
形品は型から容易に離型することができ、しか
も、すぐれた鏡面を有すると共に、くもり等の欠
陥を生じることがない。特に光学部品は表面の鏡
面性が重要であるので、本発明の合成樹脂成形用
型を使用することによる効果はきわめて大きい。
As described above, when the mold according to the present invention is used, a thin film with excellent mold releasability is formed on the molding surface, so even when molding synthetic resin with high adhesiveness such as epoxy resin etc. The resulting synthetic resin molded product can be easily released from the mold, has an excellent mirror surface, and does not have defects such as clouding. In particular, since the specularity of the surface of optical parts is important, the effect of using the synthetic resin molding mold of the present invention is extremely large.
Claims (1)
レーテイング法又はスパツタリング法により形成
された、厚さ500〜3000ÅのMgF2、MoS2、
SiO2、もしくはSiOから選ばれた１種の薄膜を有
することを特徴とする合成樹脂成形用型。1 MgF 2 , MoS 2 with a thickness of 500 to 3000 Å, formed on the molding surface of the mold by vacuum evaporation, ion plating, or sputtering.
A synthetic resin molding mold characterized by having a thin film of one type selected from SiO 2 or SiO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3589282A JPS58153608A (en) | 1982-03-09 | 1982-03-09 | Mold for molding synthetic resin and molding method of synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3589282A JPS58153608A (en) | 1982-03-09 | 1982-03-09 | Mold for molding synthetic resin and molding method of synthetic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58153608A JPS58153608A (en) | 1983-09-12 |
| JPH0240487B2 true JPH0240487B2 (en) | 1990-09-12 |
Family
ID=12454672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3589282A Granted JPS58153608A (en) | 1982-03-09 | 1982-03-09 | Mold for molding synthetic resin and molding method of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58153608A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59101320A (en) * | 1982-11-30 | 1984-06-11 | Nok Corp | Mold |
| JPS6116815A (en) * | 1984-07-04 | 1986-01-24 | Sumitomo Bakelite Co Ltd | Manufacture of optical disk substrate |
| EP0437345A3 (en) * | 1990-01-10 | 1992-08-19 | Taiyo Manufacturing Works Co., Ltd. | Mold used for fabricating thermoplastic resin articles |
| CA2374241A1 (en) | 1999-06-11 | 2000-12-21 | Bausch & Lomb Incorporated | Lens molds with protective coatings for production of contact lenses and other ophthalmic products |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1157216A (en) * | 1978-09-15 | 1983-11-22 | William F. Briggs | Coextruded thermoplastic stretch-wrap |
| JPS5839864Y2 (en) * | 1980-06-19 | 1983-09-08 | 昇 椿原 | mold for molding |
-
1982
- 1982-03-09 JP JP3589282A patent/JPS58153608A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58153608A (en) | 1983-09-12 |
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