JPH0935335A - Production of optical disk - Google Patents
Production of optical diskInfo
- Publication number
- JPH0935335A JPH0935335A JP20516495A JP20516495A JPH0935335A JP H0935335 A JPH0935335 A JP H0935335A JP 20516495 A JP20516495 A JP 20516495A JP 20516495 A JP20516495 A JP 20516495A JP H0935335 A JPH0935335 A JP H0935335A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- adhesive
- optical disk
- protective film
- wavelength
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 55
- 230000001681 protective effect Effects 0.000 claims abstract description 34
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 238000003848 UV Light-Curing Methods 0.000 abstract 1
- 238000001723 curing Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 47
- 238000000862 absorption spectrum Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 235000001630 Pyrus pyrifolia var culta Nutrition 0.000 description 1
- 240000002609 Pyrus pyrifolia var. culta Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【０００１】[0001]
【０００２】[0002]
【産業上の利用分野】本発明は、一対のディスクを貼り
合せてなる光ディスクの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an optical disc which is formed by laminating a pair of discs.
【０００３】[0003]
【０００２】[0002]
【０００４】[0004]
【従来の技術】従来、ビデオディスク等の光学式ディス
クとして、透光性の樹脂基板の一面に情報を坦持するピ
ット列又はグルーブを同心円状又は螺旋状に形成し、そ
の上方に反射膜及び保護膜を順次形成した光ディスク基
板が一般的であるが、ＤＶＤ（デジタル・ビデオ・ディ
スク）に見られるように一対の光ディスク基板の保護膜
を相対向させて接着剤層により貼り合せた両面記録再生
ディスク基板が知られている。2. Description of the Related Art Conventionally, as an optical disk such as a video disk, a pit row or a groove for carrying information is formed on one surface of a translucent resin substrate in a concentric or spiral shape, and a reflective film and a groove are formed above the pit row or groove. An optical disk substrate with a protective film formed in order is generally used, but double-sided recording / reproduction in which protective films of a pair of optical disk substrates are made to face each other and are bonded by an adhesive layer as seen in a DVD (digital video disk). Disk substrates are known.
【０００５】図６は２枚の光ディスク基板を貼り合せた
状態を示す断面図である。図６において、符号２はポリ
メチルメタクリレート、ポリカーボネート等の合成樹脂
からなる透明基板であり、この透明基板２上に反射のた
めにアルミニウム（Ａｌ）等の金属薄膜からなる反射膜
３を真空蒸着している。更に、反射膜３上には、紫外線
硬化型樹脂からなる保護膜４が形成されている。図６
は、この光ディスク基板１ａと別の光ディスク基板１ｂ
の保護膜４を対向させ、光ディスク基板の中心孔６を同
心軸状に揃えて、接着剤により貼り合せた状態を示して
いる。そして、この光ディスク基板１ａの面上から紫外
線を照射し、接着剤を硬化させている。FIG. 6 is a sectional view showing a state in which two optical disk substrates are bonded together. In FIG. 6, reference numeral 2 is a transparent substrate made of a synthetic resin such as polymethylmethacrylate or polycarbonate, and a reflective film 3 made of a metal thin film such as aluminum (Al) is vacuum-deposited on the transparent substrate 2 for reflection. ing. Further, a protective film 4 made of an ultraviolet curable resin is formed on the reflective film 3. FIG.
Is an optical disc substrate 1b different from the optical disc substrate 1a.
The protective films 4 are opposed to each other, the central holes 6 of the optical disk substrate are aligned concentrically, and they are bonded by an adhesive. Then, ultraviolet rays are radiated from the surface of the optical disk substrate 1a to cure the adhesive.
【０００６】このような貼り合せ型光学式ディスクで
は、その接着剤層として一般にホットメルト型接着剤が
用いられる。In such a laminated optical disc, a hot melt adhesive is generally used as the adhesive layer.
【０００７】[0007]
【０００３】[0003]
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、ホット
メルト型接着剤は、熱可塑性であるため耐熱性で劣り、
熱によりディスクの変形、又は剥がれが生じ易いという
問題があった。そこで耐熱性が良好である紫外線硬化型
樹脂をディスクの貼り合せ用接着剤として用いることが
考えられるが、基板の反射膜及び保護膜を介して紫外線
を照射するので大部分が反射・吸収されてしまい、十分
な量の紫外線が紫外線硬化型樹脂に到達しない。したが
って、紫外線硬化型樹脂が硬化しない、或いは硬化する
のに時間がかかるという問題があった。However, the hot melt type adhesive is inferior in heat resistance because it is thermoplastic.
There is a problem that the disk is likely to be deformed or peeled off due to heat. Therefore, it is conceivable to use UV curable resin, which has good heat resistance, as an adhesive for laminating disks, but most of it is reflected / absorbed because it is irradiated with UV light through the reflective film and the protective film of the substrate. Therefore, a sufficient amount of ultraviolet rays does not reach the ultraviolet curable resin. Therefore, there is a problem that the ultraviolet curable resin does not cure or it takes time to cure.
【０００９】本発明は、上述の事情に基づいて成された
ものであり、貼り合せに掛かる時間を大幅に短縮した光
ディスクの製造方法を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing an optical disk in which the time required for bonding is greatly reduced.
【００１０】[0010]
【０００４】[0004]
【００１１】[0011]
【課題を解決するための手段】本発明は上述の課題を解
決するために、透光性の基板と、基板の主面に形成され
た反射膜と、反射膜上に形成された保護膜とからなる２
枚のディスクの保護膜を対向させて、接着剤により貼り
合せてなる光ディスクの製造方法であって、接着剤とし
て基板、反射膜及び保護膜を透過する光の波長域内に硬
化吸収ピーク波長を有する紫外線硬化型樹脂を用いるこ
とを特徴とする。In order to solve the above-mentioned problems, the present invention provides a translucent substrate, a reflective film formed on the main surface of the substrate, and a protective film formed on the reflective film. Consisting of 2
A method of manufacturing an optical disc, which comprises laminating protective discs of two discs facing each other and adhering the discs with an adhesive, and having a curing absorption peak wavelength within a wavelength range of light passing through a substrate, a reflective film and a protective film as an adhesive. It is characterized by using an ultraviolet curable resin.
【００１２】[0012]
【０００５】そして、ここで用いられる紫外線硬化型樹
脂の硬化吸収ピーク波長は、３６０ｎｍ以上であること
を特徴とする。The ultraviolet absorption curable resin used herein has a curing absorption peak wavelength of 360 nm or more.
【００１３】[0013]
【０００６】更に、ここで用いられる紫外線硬化型樹脂
の硬化吸収ピーク波長は、少なくとも保護膜の吸収ピー
ク波長より長いことを特徴とする。Furthermore, the curing absorption peak wavelength of the ultraviolet curable resin used here is at least longer than the absorption peak wavelength of the protective film.
【００１４】[0014]
【０００７】[0007]
【００１５】[0015]
【作用】透光性の基板と、基板の主面に形成された反射
膜と、反射膜上に形成された保護膜とからなる２枚のデ
ィスクの保護膜を対向させて、接着剤により貼り合せて
なる光ディスクの接着剤に、基板、反射膜及び保護膜を
透過する光の波長域内に硬化吸収ピーク波長域を有する
紫外線硬化型樹脂を用いるので、紫外線硬化型樹脂に、
その硬化吸収波長域の紫外線が十分な量照射されること
になるため、硬化を早めることができる。The protective film of two disks, each of which is composed of a translucent substrate, a reflective film formed on the main surface of the substrate, and a protective film formed on the reflective film, faces each other and is adhered with an adhesive. As an adhesive for the optical disc to be combined, an ultraviolet curable resin having a curing absorption peak wavelength range within the wavelength range of light transmitted through the substrate, the reflection film and the protective film is used.
Since a sufficient amount of ultraviolet rays in the curing absorption wavelength range will be irradiated, curing can be accelerated.
【００１６】[0016]
【０００８】[0008]
【００１７】[0017]
【実施例】以下に本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１８】図１（ａ）は、ポリメチルメタクリレー
ト、ポリカーボネート等の合成樹脂からなる透光性の基
板としての透明基板２と反射膜３（Ａｌ）を透過した光
の波長と透過率との関係を示したもので、縦軸が透過率
（％）を、横軸が波長（ｎｍ）を示している。図１
（ｂ）に示すように、透明基板２から透過した光は、反
射膜３で反射及び吸収され、反射膜３を透過した光は図
１（ａ）に示すように３００ｎｍ以上の波長のスペクト
ルが存在する。FIG. 1A shows the relationship between the wavelength and the transmittance of light transmitted through a transparent substrate 2 as a transparent substrate made of synthetic resin such as polymethylmethacrylate or polycarbonate and a reflective film 3 (Al). Where the vertical axis represents the transmittance (%) and the horizontal axis represents the wavelength (nm). FIG.
As shown in (b), the light transmitted from the transparent substrate 2 is reflected and absorbed by the reflective film 3, and the light transmitted through the reflective film 3 has a spectrum of a wavelength of 300 nm or more as shown in FIG. Exists.
【００１９】[0019]
【０００９】次に、図２は、反射膜３面上に塗布される
保護膜４に紫外線硬化型樹脂のＳＤ−１７（大日本イン
キ化学工業株式会社製）を用いた時の光の吸収スペクト
ルを示しており、縦軸が吸収スペクトルを、横軸が波長
（ｎｍ）を示している。図２に示すように、保護膜４の
吸収スペクトルは、３４０ｎｍ付近にあり、３４０ｎｍ
以下の波長の光がは吸収される材料である。Next, FIG. 2 shows an absorption spectrum of light when an ultraviolet curable resin SD-17 (manufactured by Dainippon Ink and Chemicals, Inc.) is used for the protective film 4 applied on the surface of the reflective film 3. Where the vertical axis represents the absorption spectrum and the horizontal axis represents the wavelength (nm). As shown in FIG. 2, the absorption spectrum of the protective film 4 is around 340 nm and is 340 nm.
It is a material that absorbs light of the following wavelengths.
【００２０】また、図３（ｂ）は、図１に加え保護膜４
が塗布された場合の構造を示し、図３（ａ）は、透明基
板２、反射膜３（Ａｌ）及び紫外線硬化型樹脂のＳＤ−
１７を保護膜４として用いた場合の光の透光特性を示し
ている。図３（ａ）に示すように、３６０ｎｍ以上の波
長だけが、光ディスク基板を透過している。In addition to FIG. 1, FIG. 3B shows a protective film 4
3A shows a structure in the case of applying the transparent substrate 2, the transparent substrate 2, the reflective film 3 (Al) and the SD-of the ultraviolet curable resin.
The light transmission characteristics when 17 is used as the protective film 4 are shown. As shown in FIG. 3A, only wavelengths of 360 nm and above are transmitted through the optical disc substrate.
【００２１】[0021]
【００１０】本発明における実施例では、接着剤５とし
て図４に示すような光の波長と吸収スペクトルの特性を
有する接着剤を用いている。即ち、吸収スペクトルが３
１０ｎｍでピーク値を持ち、且つ３８０ｎｍに小さな吸
収スペクトルのピーク値を有している。ここで接着剤
は、紫外線硬化型樹脂であるＭＰＺ−１３０１（日本化
薬株式会社製）を採用した。In the embodiment of the present invention, as the adhesive 5, an adhesive having the characteristics of the wavelength of light and the absorption spectrum as shown in FIG. 4 is used. That is, the absorption spectrum is 3
It has a peak value at 10 nm and a small absorption spectrum peak value at 380 nm. Here, as the adhesive agent, MPZ-1301 (manufactured by Nippon Kayaku Co., Ltd.), which is an ultraviolet curable resin, was adopted.
【００２２】上述したように、図３において透明基板、
反射膜及び保護膜を透過した光は、３６０ｎｍ以上の波
長を透過するので、十分な量の硬化吸収波長域の紫外線
が接着剤に到達する。As described above, in FIG. 3, the transparent substrate,
The light transmitted through the reflective film and the protective film transmits a wavelength of 360 nm or more, so that a sufficient amount of ultraviolet rays in the curing absorption wavelength range reaches the adhesive.
【００２３】次に、２枚の光ディスク基板を貼り合せる
方法について図５を用いて簡単に説明する。尚、従来例
と同一の部分については同一の符号を付してある。Next, a method of bonding two optical disk substrates together will be briefly described with reference to FIG. The same parts as those in the conventional example are designated by the same reference numerals.
【００２４】[0024]
【００１１】図５において、透明基板２、反射膜３及び
保護膜４から構成される光ディスク基板１ａの保護膜４
を上面にして、光ディスク基板１の中央孔６を円柱凸状
の保持軸７に挿入する。この保持軸７と一体になった光
ディスク基板１ａを保持し回転させるための中空構造の
回転具８に載置する。次に、光ディスク基板１ａ面上の
中央付近にドーナツ状の接着剤５を塗布する。そして、
この接着剤５が塗布された光ディスク基板１ａ面上に、
貼り合せ用の別の光ディスク基板１ｂを保護膜面を対向
させて保持軸７を通して載置する。In FIG. 5, the protective film 4 of the optical disk substrate 1a composed of the transparent substrate 2, the reflective film 3 and the protective film 4.
The central hole 6 of the optical disk substrate 1 is inserted into the holding shaft 7 having a cylindrical convex shape with the above as the upper surface. The optical disk substrate 1a integrated with the holding shaft 7 is placed on a rotating tool 8 having a hollow structure for holding and rotating. Next, a donut-shaped adhesive 5 is applied to the vicinity of the center on the surface of the optical disc substrate 1a. And
On the surface of the optical disc substrate 1a coated with this adhesive 5,
Another optical disk substrate 1b for bonding is placed through the holding shaft 7 with the protective film surfaces facing each other.
【００２５】２枚の光ディスク基板１ａ、１ｂは、回転
具８上に載置された後、回転具７に設けられた空気孔９
を通して図示せぬ真空生成装置によって真空吸着され
る。この２枚の光ディスク基板は真空吸着された状態で
回転具８と共に高速回転する。この時発生する遠心力に
よって、接着剤５がディスクの外周端に向かって一様に
広がり、外周端から溢れ出た一部の接着剤は外周端から
外に飛散する。そして、光ディスク基板の回転を持続さ
せながら図５（ｂ）中の矢印の方向から紫外線を照射す
ることによって、接着剤を硬化させる。The two optical disk substrates 1a and 1b are placed on the rotating tool 8 and then the air holes 9 provided in the rotating tool 7.
Through a vacuum generator (not shown). The two optical disk substrates rotate at high speed together with the rotating tool 8 in a vacuum-adsorbed state. Due to the centrifugal force generated at this time, the adhesive 5 uniformly spreads toward the outer peripheral edge of the disk, and a part of the adhesive overflowing from the outer peripheral edge scatters outward from the outer peripheral edge. Then, while continuing the rotation of the optical disk substrate, ultraviolet rays are irradiated from the direction of the arrow in FIG. 5B to cure the adhesive.
【００２６】[0026]
【００１２】尚、本発明の実施例において、接着剤にＳ
Ｄ−１７を用いた場合、硬化に必要な紫外線の照射時間
が３０〜４０秒であったのに対して、ＭＰＺ−１３０１
（日本化薬株式会社製）を用いた場合は、３〜４秒で硬
化することを確認することができた。このことは、接着
剤の材料として硬化吸収ピーク波長が３６０ｎｍ以上の
特性の接着剤を用いるか、或いは硬化吸収ピーク波長
が、少なくとも保護膜に用いられる材料の吸収ピーク波
長より長い特性を有する材料であれば、ＭＰＺ−１３０
１に限定されるものではない。In the embodiment of the present invention, S is used as the adhesive.
When D-17 was used, the irradiation time of ultraviolet rays required for curing was 30 to 40 seconds, whereas MPZ-1301 was used.
When (Nippon Kayaku Co., Ltd.) was used, it could be confirmed that the composition was cured in 3 to 4 seconds. This means that an adhesive having a curing absorption peak wavelength of 360 nm or more is used as the adhesive material, or a material having a curing absorption peak wavelength that is at least longer than the absorption peak wavelength of the material used for the protective film. If there is, MPZ-130
It is not limited to one.
【００２７】[0027]
【００１３】[0013]
【００２８】[0028]
【発明の効果】本発明による実施例によれば、透光性の
基板と、基板の主面に形成された反射膜と、反射膜上に
形成された保護膜とからなる２枚のディスクの保護膜を
対向させて、接着剤により貼り合せてなる光ディスクの
接着剤に、基板、反射膜及び保護膜を透過する光の波長
域内に硬化吸収ピーク波長を有する紫外線硬化型樹脂を
用いたので、十分な量の硬化吸収波長域の紫外線が接着
剤に照射され、硬化を早めることができるので、貼り合
せに掛かる時間を大幅に短縮することができると共に安
定した貼り合せが可能である。According to the embodiment of the present invention, two discs each including a translucent substrate, a reflective film formed on the main surface of the substrate, and a protective film formed on the reflective film are provided. Since the protective film is opposed to the adhesive of the optical disk which is bonded with the adhesive, the substrate, the reflection film, and the ultraviolet curable resin having a curing absorption peak wavelength within the wavelength range of the light passing through the protective film are used. Since the adhesive is irradiated with a sufficient amount of ultraviolet rays in the curing absorption wavelength range to accelerate the curing, the time required for the bonding can be greatly shortened and stable bonding is possible.
【図１】透明基板及び反射層を透過した時の光の波長に
対する透過率を示す図。FIG. 1 is a diagram showing the transmittance with respect to the wavelength of light when transmitted through a transparent substrate and a reflective layer.
【図２】保護膜の光の波長と吸収スペクトルの関係を示
す図。FIG. 2 is a diagram showing a relationship between a light wavelength of a protective film and an absorption spectrum.
【図３】透明基板、反射層及び保護膜を透過した時の光
の波長に対する透過率を示した図。FIG. 3 is a diagram showing the transmittance with respect to the wavelength of light when transmitted through a transparent substrate, a reflective layer, and a protective film.
【図４】本発明の実施例に用いられる接着剤の光の波長
と吸収スペクトルの関係を示す図。FIG. 4 is a diagram showing a relationship between a light wavelength and an absorption spectrum of an adhesive used in an example of the present invention.
【図５】本発明の実施例における２枚の光ディスク基板
を貼り合せる方法について示した図。FIG. 5 is a diagram showing a method of bonding two optical disk substrates according to the embodiment of the present invention.
【図６】従来例における２枚の光ディスク基板を貼り合
せた状態を示す断面図。FIG. 6 is a cross-sectional view showing a state in which two optical disk substrates in a conventional example are bonded together.
１ａ、１ｂ・・・光ディスク基板 ２・・・透明基板 ３・・・反射膜 ４・・・保護膜 ５・・・接着剤 ６・・・光ディスク基板の中心孔 ７・・・保持軸 ８・・・回転具 ９・・・空気孔 1a, 1b ... Optical disc substrate 2 ... Transparent substrate 3 ... Reflective film 4 ... Protective film 5 ... Adhesive agent 6 ... Center hole of optical disc substrate 7 ... Retaining shaft 8 ...・ Rotating tool 9 ... Air vent
───────────────────────────────────────────────────── フロントページの続き (72)発明者 丸山 治久 山梨県中巨摩郡田富町西花輪2680番地 パ イオニアビデオ株式会社内 (72)発明者 野中 吉隆 山梨県中巨摩郡田富町西花輪2680番地 パ イオニアビデオ株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Haruhisa Maruyama 2680 Nishi Hanawa, Tatomi-cho, Nakakoma-gun, Yamanashi Pioneer Video Co., Ltd. Within the corporation
Claims (3)
クの保護膜を対向させて、接着剤により貼り合せてなる
光ディスクの製造方法であって、 前記接着剤として前記基板、反射膜及び保護膜を透過す
る光の波長域内に硬化吸収ピーク波長を有する紫外線硬
化型樹脂を用いることを特徴とする光ディスク製造方
法。1. A protective film for two discs, which comprises a translucent substrate, a reflective film formed on a main surface of the substrate, and a protective film formed on the reflective film, is opposed to each other, A method of manufacturing an optical disc, which is formed by bonding with an adhesive, wherein an ultraviolet curable resin having a curing absorption peak wavelength within a wavelength range of light transmitted through the substrate, the reflection film and the protective film is used as the adhesive. Optical disk manufacturing method.
波長は、３６０ｎｍ以上であることを特徴とする請求項
１の光ディスク製造方法。2. The method for producing an optical disk according to claim 1, wherein the ultraviolet absorption curable resin has a curing absorption peak wavelength of 360 nm or more.
波長は、少なくとも前記保護膜の吸収ピーク波長より長
いことを特徴とする請求項１の光ディスク製造方法。3. The optical disc manufacturing method according to claim 1, wherein a curing absorption peak wavelength of the ultraviolet curable resin is at least longer than an absorption peak wavelength of the protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20516495A JPH0935335A (en) | 1995-07-19 | 1995-07-19 | Production of optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20516495A JPH0935335A (en) | 1995-07-19 | 1995-07-19 | Production of optical disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0935335A true JPH0935335A (en) | 1997-02-07 |
Family
ID=16502490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20516495A Pending JPH0935335A (en) | 1995-07-19 | 1995-07-19 | Production of optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0935335A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042684A (en) * | 1996-04-01 | 2000-03-28 | Toolex Alpha Ab | Method and apparatus for glueing together disc elements |
| EP1235215A1 (en) * | 1996-04-01 | 2002-08-28 | OTB Group B.V. | Method and apparatus for glueing together disc elements |
| US6444081B2 (en) | 1996-05-13 | 2002-09-03 | Odme International B.V. | Method of applying glue simultaneously to two facing, adjacent disc surfaces |
-
1995
- 1995-07-19 JP JP20516495A patent/JPH0935335A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042684A (en) * | 1996-04-01 | 2000-03-28 | Toolex Alpha Ab | Method and apparatus for glueing together disc elements |
| US6334927B1 (en) | 1996-04-01 | 2002-01-01 | Otb Group, B.V. | Method and apparatus for gluing together disc elements |
| US6383326B1 (en) | 1996-04-01 | 2002-05-07 | Otb Group, B.V. | Method for glueing together disc elements |
| EP1235215A1 (en) * | 1996-04-01 | 2002-08-28 | OTB Group B.V. | Method and apparatus for glueing together disc elements |
| US6444081B2 (en) | 1996-05-13 | 2002-09-03 | Odme International B.V. | Method of applying glue simultaneously to two facing, adjacent disc surfaces |
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