JPH07148742A - Mold excellent in releasability - Google Patents
Mold excellent in releasabilityInfo
- Publication number
- JPH07148742A JPH07148742A JP29642793A JP29642793A JPH07148742A JP H07148742 A JPH07148742 A JP H07148742A JP 29642793 A JP29642793 A JP 29642793A JP 29642793 A JP29642793 A JP 29642793A JP H07148742 A JPH07148742 A JP H07148742A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- golf ball
- releasability
- tungsten carbide
- molding
- 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.)
- Pending
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
-
- 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
- B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
- B29K2709/02—Ceramics
- B29K2709/04—Carbides; Nitrides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は成形時の離型性、特にゴ
ルフボールの成形に際し、離型性を改良した金型に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold having improved mold releasability at the time of molding, particularly mold releasability when molding a golf ball.
【０００２】[0002]
【従来の技術】元来ゴム製品、特にゴルフボール自体の
成形やゴルフボールコアの成形における金型からの離型
性が非常に悪く、生産上問題となっている。特に、カバ
ーとしてアイオノマー樹脂を使用したゴルフボールの成
形時、あるいはα,β不飽和カルボン酸の金属塩を共架
橋剤に使用したゴルフボール用コアの成形時における離
型性の問題は特に重要であった。2. Description of the Related Art Originally, a rubber product, particularly a golf ball itself or a golf ball core, has a very poor mold releasability from a mold, which is a problem in production. In particular, the problem of releasability is particularly important when molding a golf ball using an ionomer resin as a cover, or when molding a golf ball core using a metal salt of an α, β unsaturated carboxylic acid as a co-crosslinking agent. there were.
【０００３】一般に、これらの離型性を改善するために
金型に水性フッ素系離型剤やフッ素樹脂コーティングを
し、離型性を確保してきた。しかし、水性フッ素系離型
剤は金型の汚れがひどく、金型の洗浄の手間や塗布の手
間がかかる。フッ素樹脂コーティングは上型と下型の接
面から剥離が起こり、２０回程度の使用で剥離が困難に
なる。Generally, in order to improve the mold releasability, a mold is coated with an aqueous fluorine-based mold release agent or a fluororesin to secure the mold releasability. However, the water-based fluorine-based release agent causes severe mold stains, and requires time and effort for cleaning and coating the mold. The fluororesin coating peels off from the contact surface between the upper mold and the lower mold, and peeling becomes difficult after about 20 times of use.
【０００４】ツーピースボールの射出成形用金型や糸巻
きボールのサーリンカバーボール成形用金型には、カバ
ー材料であるアイオノマー樹脂と金型金属との親和性が
高いため、離型性のより優れたシリコーン離型剤(焼き
付けタイプ)が用いられる。しかしながら、焼き付けタ
イプのシリコーン離型剤でもシリコーンがアイオノマー
カバーに少しづつ取られて行き、フッ素樹脂コーティン
グと同様、２０回程度で離型性が悪化する。The injection mold for two-piece balls and the Surlyn cover ball mold for wound balls have a high affinity for the ionomer resin as the cover material and the mold metal, and therefore have a better releasability. A silicone release agent (baking type) is used. However, even with a baking type silicone release agent, the silicone is gradually picked up by the ionomer cover, and like the fluororesin coating, the releasability deteriorates after about 20 times.
【０００５】[0005]
【発明が解決しようとする課題】本発明は離型性の優れ
た金型、特にゴルフボールの製造(例えば、ゴルフボー
ル用コアの成形あるいはカバーの成形)に優れた金型を
提供する。DISCLOSURE OF THE INVENTION The present invention provides a mold having excellent releasability, particularly a mold which is excellent in manufacturing a golf ball (for example, molding a core for a golf ball or molding a cover).
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明は表面
にタングステンカーバイトを２〜２０μmの厚さで被覆
した離型性の優れた金型を提供する。That is, the present invention provides a mold having excellent releasability, the surface of which is coated with tungsten carbide in a thickness of 2 to 20 μm.
【０００７】タングステンカーバイトはＷ2Ｃの化学式
で表わすことができ、一般にはフッ化タングステンとベ
ンゼンとを水素ガス雰囲気下で反応させることにより、
金型表面にタングステンカーバイト層を形成することが
できる。この反応は以下の式に基づいて起こるものと考
える: ＷＦ6＋Ｃ6Ｈ6＋Ｈ2→Ｗ2Ｃ・Ｗ3Ｃ＋ＨＦTungsten carbide can be represented by the chemical formula of W 2 C, and in general, by reacting tungsten fluoride and benzene in a hydrogen gas atmosphere,
A tungsten carbide layer can be formed on the mold surface. It is considered that this reaction occurs based on the following formula: WF 6 + C 6 H 6 + H 2 → W 2 C · W 3 C + HF
【０００８】このタングステンカーバイト層の形成時の
反応温度は３５０〜５５０℃で、０.５〜２時間行われ
る。The reaction temperature at the time of forming the tungsten carbide layer is 350 to 550 ° C., and the reaction is performed for 0.5 to 2 hours.
【０００９】タングステンカーバイトの膜厚は２〜２０
μm、好ましくは８〜１５μmである。２μmよりも薄い
とコーティング表面の均一性が乏しい。２０μm以上で
あるとタングステンカーバイト膜の剥離が起こりやす
い。The film thickness of tungsten carbide is 2 to 20.
μm, preferably 8 to 15 μm. If the thickness is less than 2 μm, the coating surface has poor uniformity. If the thickness is 20 μm or more, the tungsten carbide film is likely to peel off.
【００１０】本発明のタングステンカーバイト被膜を形
成する金型はどのような金型であってもよく、一般的に
ゴルフボールの成形に用いられる金型、例えばステンレ
ス、スチール、アルミニウム、銅等から成る金型がより
好適である。The mold for forming the tungsten carbide coating film of the present invention may be any mold, and is generally made of a mold used for molding a golf ball, such as stainless steel, steel, aluminum or copper. Is more preferred.
【００１１】[0011]
【発明の効果】本発明で得られるタングステンカーバイ
トを被覆した金型は極めて離型性が高くゴルフボールの
成形に非常に好適に用いることができる。The mold coated with the tungsten carbide obtained in the present invention has a very high releasability and can be very suitably used for molding a golf ball.
【００１２】[0012]
【実施例】本発明を実施例によりさらに詳細に説明す
る。本発明はこれら実施例に限定されるものと解しては
ならない。EXAMPLES The present invention will be described in more detail by way of examples. The invention should not be construed as limited to these examples.
【００１３】実施例 (１)ワンピースゴルフボールの成形 以下の配合を混練した後、ワンピース用金型内で１７５
℃で２０分間成形した。 成分 重量％ ブタジエンゴム １００ 亜鉛華 ２３ メタクリル酸 ２１ 老化防止剤 ０.５ ジクミルパーオキサイド １.５ツーピースゴルフボールのコアの成形 以下の成分を混練した後、ツーピースゴルフボールコア
の金型で１５０℃で２５分間成形した。 Example (1) Molding of one-piece golf ball After kneading the following ingredients, 175 in a one-piece mold.
Molded at 20 ° C for 20 minutes. Ingredient % by weight Butadiene rubber 100 Zinc white 23 Methacrylic acid 21 Anti-aging agent 0.5 Dicumyl peroxide 1.5 Molding of two-piece golf ball core After kneading the following components, a two-piece golf ball core mold is used at 150 ° C. Was molded for 25 minutes.
【００１４】 成分 重量％ ブタジエンゴム １００ 亜鉛華 ２０ アクリル酸亜鉛 ３０ 老化防止剤 ０.５ ジクミルパーオキサイド １.５アイオノマー樹脂の被覆成形 以下のアイオノマー樹脂組成物を射出成形機(２００〜
２５０℃)で射出成形を行った。 Ingredient % by weight Butadiene rubber 100 Zinc white 20 Zinc acrylate 30 Anti-aging agent 0.5 Dicumyl peroxide 1.5 Coating molding of ionomer resin The following ionomer resin compositions are injection molded (200-
Injection molding was performed at 250 ° C.
【００１５】 成分 重量％ アイオノマー樹脂(ハイミラン１７０６) １００ 酸化チタン １ Ingredient % by Weight Ionomer Resin (Himilan 1706) 100 Titanium Oxide 1
【００１６】上記３つの成形方法に用いる金型を以下の
４種類のものおよび離型剤を塗布しないものについてそ
れぞれ行い、その離型性について評価を行った。 (１)タングステンカーバイト被覆金型(コーティング厚
１２μm) (２)フッ素系離型剤(水性)：フッ素系離型剤を５〜２０
倍に希釈し、噴霧装置によりあらかじめ熱した金型に吹
き付ける。 (３)フッ素樹脂コーティング：日本フッ素工業社におい
て焼き付けコーティングを行った。 (４)シリコーン系離型剤: あらかじめ金型を５０〜８０
℃に予熱し、シリコーン離型剤を２〜５回スプレーで塗
布し、さらに２００℃に昇温して焼き付けた。なお、シ
リコーン離型剤は市販のフレコート３３であった。 それぞれの離型性を評価し表１に示す。The molds used in the above three molding methods were respectively used for the following four types and those not coated with a release agent, and the releasability was evaluated. (1) Tungsten carbide coated mold (coating thickness 12 μm) (2) Fluorine-based release agent (water-based): 5-20 fluorinated release agent
It is diluted twice and sprayed on a preheated mold by a spraying device. (3) Fluorine resin coating: Baking coating was performed by Nippon Fluorine Industry Co., Ltd. (4) Silicone-based mold release agent: The mold is preliminarily 50-80
It was preheated to ℃, sprayed with a silicone release agent 2 to 5 times, further heated to 200 ℃ and baked. The silicone mold release agent was commercially available Flake Coat 33. The releasability of each is evaluated and is shown in Table 1.
【００１７】[0017]
【表１】 ＊１: 上下金型接面が剥離 ＊２: 金型汚染大[Table 1] * 1: Peeling of the upper and lower mold contact surfaces * 2: Large mold contamination
Claims (2)
０μmの厚さで被覆した離型性の優れた金型。1. 2 to 2 tungsten carbide on the surface
A mold with excellent releasability coated with a thickness of 0 μm.
求項１記載の金型。2. The mold according to claim 1, wherein the mold is a golf ball molding mold.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29642793A JPH07148742A (en) | 1993-11-26 | 1993-11-26 | Mold excellent in releasability |
| AU79021/94A AU7902194A (en) | 1993-11-26 | 1994-11-24 | Mold having good releasability |
| GB9423871A GB2284175A (en) | 1993-11-26 | 1994-11-25 | Mould having good releasability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29642793A JPH07148742A (en) | 1993-11-26 | 1993-11-26 | Mold excellent in releasability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07148742A true JPH07148742A (en) | 1995-06-13 |
Family
ID=17833404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29642793A Pending JPH07148742A (en) | 1993-11-26 | 1993-11-26 | Mold excellent in releasability |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07148742A (en) |
| AU (1) | AU7902194A (en) |
| GB (1) | GB2284175A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1230416B1 (en) | 1999-09-10 | 2009-05-20 | Mic Ab | A method for the manufacturing of a matrix |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625709A1 (en) * | 1986-07-30 | 1988-02-04 | Wacker Chemie Gmbh | Process for producing moulded articles from compositions crosslinkable to form organopolysiloxane elastomers |
| JP2728227B2 (en) * | 1990-09-28 | 1998-03-18 | キヤノン株式会社 | Optical element manufacturing method |
| JP2680175B2 (en) * | 1990-09-28 | 1997-11-19 | キヤノン株式会社 | Optical element manufacturing method |
-
1993
- 1993-11-26 JP JP29642793A patent/JPH07148742A/en active Pending
-
1994
- 1994-11-24 AU AU79021/94A patent/AU7902194A/en not_active Abandoned
- 1994-11-25 GB GB9423871A patent/GB2284175A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU7902194A (en) | 1995-06-01 |
| GB2284175A (en) | 1995-05-31 |
| GB9423871D0 (en) | 1995-01-11 |
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