JPH0753382B2 - Manufacturing method of hollow mold - Google Patents
Manufacturing method of hollow moldInfo
- Publication number
- JPH0753382B2 JPH0753382B2 JP33461290A JP33461290A JPH0753382B2 JP H0753382 B2 JPH0753382 B2 JP H0753382B2 JP 33461290 A JP33461290 A JP 33461290A JP 33461290 A JP33461290 A JP 33461290A JP H0753382 B2 JPH0753382 B2 JP H0753382B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- mold
- molten resin
- hollow
- cross
- 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
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
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C45/1705—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using movable mould parts
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming 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、樹脂から中空型物を作る方法に関する。TECHNICAL FIELD The present invention relates to a method for producing a hollow mold from a resin.
溶融した樹脂を型キャビティ内に導入した後に又は導入
しながら、該型キャビティ内の溶融樹脂中に加圧流体、
特に加圧気体を注入し、樹旨が固化してから圧力を解放
することによって中空型物を作る方法は多数公知である
（たとえば特開昭60-24913）。成形体を中空とすること
によって、成形体を軽量にでき、また樹脂の使用量を減
らすことができる。After or while introducing the molten resin into the mold cavity, a pressurized fluid in the molten resin in the mold cavity,
In particular, there are many known methods for producing a hollow mold by injecting a pressurized gas and releasing the pressure after the solidification of the resin (for example, JP-A-60-24913). By making the molded body hollow, the molded body can be made lightweight and the amount of resin used can be reduced.
第４図に示すように、成形体の一部が厚肉になるように
金型キャビティを構成し、加圧気体をこの厚肉部の溶融
樹脂内に注入し、厚肉部内を加圧気体が進んで行って中
空部を作るようにすることも知られている。このような
加圧気体の流路はガスチャンネルと呼ばれ、厚肉部は基
本的な肉厚の部分の２〜５倍の厚さとされている。厚肉
部はまた、成形体の剛性を増すよう働く。As shown in FIG. 4, the mold cavity is configured so that a part of the molded body becomes thick, and pressurized gas is injected into the molten resin of this thick portion, and the thick portion is pressurized gas. It is also known to go to create a hollow. Such a flow path of the pressurized gas is called a gas channel, and the thick portion has a thickness that is 2 to 5 times the thickness of the basic thick portion. The thick portion also serves to increase the rigidity of the molded body.
しかし、上記のように加圧気体の流路を規定しても、実
際には第５図（第４図の成形品の部分断面図）に示すよ
うにガスチャンネルの外の基本肉厚の部品にまでガスが
入ってゆく傾向があった。また逆に、ガスチャンネル部
の一部には加圧気体が入って行かないことも多い。つま
り、成形品における中空部の分布が、製品設計時に意図
したものと相当に異なる場合があり、しかもこの相違が
成形ごとに一定しない。その結果、成形体の物性、寸法
精度及び安定性が悪くなり、また生産性も低下する。However, even if the flow path of the pressurized gas is defined as described above, in reality, as shown in FIG. 5 (partial cross-sectional view of the molded product in FIG. 4), a part having a basic wall thickness outside the gas channel is formed. There was a tendency for gas to enter. On the contrary, the pressurized gas often does not enter a part of the gas channel portion. That is, the distribution of the hollow portions in the molded product may differ considerably from what was intended at the time of product design, and this difference is not constant for each molding. As a result, the physical properties, dimensional accuracy, and stability of the molded product deteriorate, and the productivity also decreases.
本発明は、上記の欠点を解消し、予め設計されたチャン
ネルのみを加圧流体が流動し、設計通りの中空部を持つ
成形体を作る方法を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and to provide a method for producing a molded product having a designed hollow portion in which a pressurized fluid flows only through a predesigned channel.
本発明は、溶融した樹脂を型キャビティ内に導入し、該
型キャビティ内の溶融樹脂中に加圧流体を注入すること
により成形体の厚肉部の少くとも一部を中空とすること
を含む中空型物の製造方法において、上記の中空とすべ
き厚肉部の少なくとも一部とその外延部との間において
キャビティ断面積を狭くし、もって加圧流体が上記外延
部に侵入することを防ぐことを特徴とする方法である。
加圧流体は、好ましくは加圧気体であり、以下では単に
加圧気体と言う。The present invention includes introducing a molten resin into a mold cavity and injecting a pressurized fluid into the molten resin in the mold cavity to hollow out at least a part of a thick portion of a molded body. In the method for manufacturing a hollow molded article, the cavity cross-sectional area is narrowed between at least a part of the thick portion to be hollow and the outer extension portion thereof, thereby preventing pressurized fluid from entering the outer extension portion. It is a method characterized by that.
The pressurized fluid is preferably a pressurized gas and is referred to below simply as pressurized gas.
図面を参照しながら本発明を説明する。The present invention will be described with reference to the drawings.
第１図は、本発明で用いる射出成形機の金型の断面の概
念図である。１は上型、２は下型であり、３がキャビテ
ィである。好ましい実施態様においては、溶融樹脂をキ
ャビティに射出するより前に、加圧気体、好ましくは空
気又は窒素をキャビティに充填して、カウンタープレッ
シャーをかけておく。FIG. 1 is a conceptual diagram of a cross section of a mold of an injection molding machine used in the present invention. 1 is an upper mold, 2 is a lower mold, and 3 is a cavity. In a preferred embodiment, a pressurized gas, preferably air or nitrogen, is charged into the cavity and counter pressure is applied prior to injecting the molten resin into the cavity.
次に、溶融樹脂をキャビティ内へ射出する。溶融樹脂の
量は、キャビティを充満するに不足する所定量であり、
所望の中空の体積割合により決まる。中空型物製品中の
中空の体積割合は、たとえば10〜70％、特に30〜60％で
ある。Next, the molten resin is injected into the cavity. The amount of molten resin is a predetermined amount that is insufficient to fill the cavity,
It depends on the desired hollow volume ratio. The hollow volume fraction in the hollow product is, for example, 10 to 70%, in particular 30 to 60%.
金型において厚肉部４とその外延部との間に、キャビテ
ィ方向に前進・後退できる仕切り５を設けておく。上記
のように所定量の溶融樹脂を射出した後に（又は射出し
ながら）、仕切り５を前進させることにより、キャビテ
ィ断面積を狭くする。この状態を第２図に示す。キャビ
ティ断面積をどの程度狭くするかは、外延部の基本肉厚
部の厚さ、成形品全体の形状の複雑さ、加圧気体の圧
力、樹脂の流動粘度などに依存するが、一般に基本肉厚
部の厚さの10〜90％、好ましくは30〜70％の断面積を残
せば良い。これより小さい断面積を残したのでは、後述
する加圧気体の注入の際に該断面を通る溶融樹脂の流れ
がさえぎられ、従ってキャビティ先端において空隙が残
ってしまう恐れがある。他方、上記より大きい断面積を
残したのでは、本発明の効果が少い。A partition 5 that can be moved forward and backward in the cavity direction is provided between the thick portion 4 and the outer extended portion of the mold. After injecting (or while injecting) a predetermined amount of molten resin as described above, the partition 5 is advanced to narrow the cavity cross-sectional area. This state is shown in FIG. How narrow the cavity cross-sectional area is depends on the thickness of the basic thick part of the outer extension, the complexity of the overall shape of the molded product, the pressure of the pressurized gas, the flow viscosity of the resin, etc. A cross-sectional area of 10 to 90%, preferably 30 to 70% of the thickness of the thick part may be left. If the cross-sectional area smaller than this is left, the flow of the molten resin through the cross-section is interrupted when the pressurized gas is injected, which will be described later, so that there is a possibility that voids remain at the tip of the cavity. On the other hand, if the cross-sectional area larger than the above is left, the effect of the present invention is small.
次に加圧気体（たとえば空気又は窒素）を厚肉部の溶融
樹脂中に直接に注入する。これを行うために、第１図に
示すようにキャビティの中に先端が位置する針６を金型
に設ける。針６は固定されていてもよく、また前後に移
動できるようにしてもよい。第２図は、溶融樹脂を射出
する前に針６を後退させる態様を示している。溶融樹脂
の射出後に、針６を前進させて、針先端を厚肉部に到達
させる。針６を通して加圧気体を注入する。加圧気体を
注入してゆくにつれて、溶融樹脂中に中空が生じ、中空
が大きくなってゆくと、同時に溶融樹脂がキャビティ先
端の間隙の方に押されて移動して、金型表面に密着す
る。なお、上述の好ましい態様に従いキャビティにカウ
ンタープレッシャーをかけておいた場合には、上記キャ
ビティ先端の方に溶融樹脂が流動している間にキャビテ
ィ先端のカウンタープレッシャーを開放する。Next, a pressurized gas (for example, air or nitrogen) is directly injected into the thick portion of the molten resin. To do this, the die is provided with a needle 6 whose tip is located in the cavity as shown in FIG. The needle 6 may be fixed or may be movable back and forth. FIG. 2 shows a mode in which the needle 6 is retracted before injecting the molten resin. After the injection of the molten resin, the needle 6 is advanced so that the tip of the needle reaches the thick portion. Pressurized gas is injected through the needle 6. As the pressurized gas is injected, hollows are created in the molten resin, and as the hollows grow larger, the molten resin is pushed toward the gap at the tip of the cavity and moves to adhere to the mold surface. . When the cavity is counter-pressured according to the above-described preferred embodiment, the counter-pressure at the tip of the cavity is released while the molten resin is flowing toward the tip of the cavity.
そこで次に、仕切り５を後退させて第１図に示す元の位
置に戻す。この際に、厚肉部の中空内の気体はまだ高い
圧力にあって溶融樹脂を金型表面の方に押圧しているの
で、仕切り５が後退するにつれて溶融樹脂が前進する。
従って、出来上った成形品において、仕切り５の個所に
凹陥部は無い。Then, next, the partition 5 is retracted and returned to the original position shown in FIG. At this time, the gas in the hollow of the thick portion is still at a high pressure and presses the molten resin toward the mold surface, so that the molten resin advances as the partition 5 retracts.
Therefore, in the finished molded product, there is no recessed portion at the location of the partition 5.
次に樹脂を固化させ、そして中空内部の加圧気体の圧力
を大気圧まで減圧する。そのために加圧気体は針６を通
って大気中に放出されるか、又は回収される。The resin is then solidified and the pressure of the pressurized gas inside the hollow is reduced to atmospheric pressure. To that end, the pressurized gas is released into the atmosphere through the needle 6 or is collected.
上記では、各操作を逐次的に行う態様を述べたが、各操
作が部分的にオーバーラップしてもよい。特に、仕切り
５の前進中に加圧気体の注入を開始してもよく、また加
圧気体の注入の終了より少し前に仕切り５を後退させて
もよい。In the above description, the mode in which each operation is sequentially performed has been described, but each operation may partially overlap. In particular, the injection of the pressurized gas may be started during the advance of the partition 5, or the partition 5 may be retracted slightly before the completion of the injection of the pressurized gas.
上記の仕切り５は、厚肉部のすべてに設けることができ
るが、金型構造の複雑化を避けるために、厚肉部の一部
に設けてもよい。仕切り５を設けるべき個所は、加圧気
体が基本肉厚部にまで侵入しやすい個所であり、これは
成形品の構造に依存するが、一般には加圧気体の注入
口、即ち針６に近い厚肉部である。加圧気体の注入口が
複数ある場合も同様である。仕切り５は、厚肉部と直接
隣接して設けることが一般に好ましいが、厚肉部の形状
によっては厚肉部から少しの距離たとえば１〜5mm離し
て設けてもよい。The partition 5 can be provided on all of the thick portions, but may be provided on a part of the thick portions in order to avoid complication of the mold structure. The part where the partition 5 should be provided is a part where the pressurized gas easily penetrates into the basic thick part, and this depends on the structure of the molded product, but generally it is close to the injection port of the pressurized gas, that is, the needle 6. It is a thick part. The same applies when there are a plurality of injection ports for pressurized gas. Although it is generally preferable to provide the partition 5 directly adjacent to the thick portion, it may be provided at a slight distance from the thick portion, for example, 1 to 5 mm depending on the shape of the thick portion.
仕切り５を前進・後退させる機構としては、仕切り５を
油圧又は空圧などで駆動されるロッドと連結して、適宜
のタイミングで駆動させることができる。As a mechanism for moving the partition 5 forward and backward, the partition 5 can be connected to a rod driven by hydraulic pressure or pneumatic pressure and driven at an appropriate timing.
また、仕切り５は金型に固定されていてもよい。この態
様を第３図に示す。この場合、仕切り５の個所で残る断
面積をあまり小さくすると、成形品の強度の点で問題が
出る、あるいは加圧気体の注入の際に溶融樹脂の流動が
制限されてキャビティ先端に樹脂が達しないという問題
が生じることがある。断面積をどの程度とするかは、成
形品の形状、必要とされる強度などに依存して都度適宜
に決めることができる。一般には基本肉厚部の50〜70％
である。この態様においても、仕切りを前進・後退させ
ないことの他は、上記第１図の金型の場合と同様にして
実施することができる。Further, the partition 5 may be fixed to the mold. This aspect is shown in FIG. In this case, if the cross-sectional area remaining at the partition 5 is made too small, the strength of the molded product will be problematic, or the flow of the molten resin will be restricted when the pressurized gas is injected, and the resin will reach the tip of the cavity. The problem of not doing may occur. The extent of the cross-sectional area can be appropriately determined depending on the shape of the molded product, the required strength, and the like. Generally 50 to 70% of the basic thickness
Is. Also in this mode, it can be carried out in the same manner as in the case of the mold of FIG. 1 except that the partition is not moved forward and backward.
本発明において仕切り５を設けたことによって、加圧気
体が基本肉厚部に侵入することが防がれる。従って、設
計通りに再現性良く中空部分を成形品中に作ることがで
きる。By providing the partition 5 in the present invention, it is possible to prevent the pressurized gas from entering the basic thick portion. Therefore, the hollow portion can be formed in the molded product with good reproducibility as designed.
第１図は、本発明を実施する金型の断面の概略図であ
る。図中の数字は下記のものを示す。 １と2:夫々、金型の上型と下型 3:キャビティ、4:厚肉部 5:仕切り、6:加圧気体用の針 第２図は、第１図の部分拡大図であり、樹脂が射出され
た状態を示す。 第３図は、第１図とは異なる態様の、本発明を実施する
金型の断面の概略図である。図中の数字は上記と同じも
のを示す。 第４図は、本発明（及び従来法）の成形品の外観を示す
見取図である。 第５図は、従来法の成形品の部分の断面図である。FIG. 1 is a schematic view of a cross section of a mold for carrying out the present invention. The numbers in the figure indicate the following. 1 and 2: mold upper and lower molds 3: cavity, 4: thick-walled part 5: partition, 6: needle for pressurized gas Fig. 2 is a partially enlarged view of Fig. 1, The state where the resin is injected is shown. FIG. 3 is a schematic view of a cross section of a mold for carrying out the present invention, which is different from the embodiment shown in FIG. The numbers in the figure indicate the same as above. FIG. 4 is a sketch showing the appearance of the molded product of the present invention (and the conventional method). FIG. 5 is a cross-sectional view of a part of a molded product of the conventional method.
Claims (4)
該型キャビティ内の溶融樹脂中に加圧流体を注入するこ
とにより成形体の厚肉部の少くとも一部を中空とするこ
とを含む中空型物の製造方法において、上記の中空とす
べき厚肉部の少なくとも一部とその外延部との間におい
てキャビティ断面積を狭くし、もって加圧流体が上記外
延部に侵入することを防ぐことを特徴とする方法。1. A molten resin is introduced into a mold cavity,
In the method for producing a hollow mold product, which comprises injecting a pressurized fluid into the molten resin in the mold cavity to hollow out at least a part of the thick portion of the molded body, the thickness to be hollowed as described above. A method comprising: narrowing a cavity cross-sectional area between at least a part of a meat portion and an outer extension thereof, thereby preventing a pressurized fluid from entering the outer extension.
おいて、キャビティを構成する金型面をキャビティ方向
に前進及び後退可能と成し、加圧流体を注入する前に又
は注入しながら上記金型面を前進させることによってキ
ャビティ断面積を狭くする請求項第１項記載の方法。2. A mold surface, which constitutes a cavity, can be moved forward and backward in the direction of the cavity at the portion where the cross-sectional area of the cavity is narrowed, and the mold is injected before or while injecting a pressurized fluid. The method of claim 1 wherein the cavity cross-sectional area is reduced by advancing the surface.
を後退させ、この際に溶融樹脂が後退する金型面に追随
して流動して、成形品表面に凹陥部のない中空型物を得
る請求項第２項記載の方法。3. A hollow having no recessed portion on the surface of the molded product, in which the mold surface is retracted after the injection of the pressurized fluid is completed, and the molten resin flows following the mold surface retracting at this time. The method according to claim 2, wherein a mold is obtained.
おいて金型表面がキャビティ側に突出している金型を用
いる請求項第１項記載の方法。4. The method according to claim 1, wherein a mold having a mold surface projecting toward the cavity is used at a portion for narrowing the cavity cross-sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33461290A JPH0753382B2 (en) | 1990-11-30 | 1990-11-30 | Manufacturing method of hollow mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33461290A JPH0753382B2 (en) | 1990-11-30 | 1990-11-30 | Manufacturing method of hollow mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04201423A JPH04201423A (en) | 1992-07-22 |
| JPH0753382B2 true JPH0753382B2 (en) | 1995-06-07 |
Family
ID=18279326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33461290A Expired - Fee Related JPH0753382B2 (en) | 1990-11-30 | 1990-11-30 | Manufacturing method of hollow mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753382B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0712621B2 (en) * | 1991-01-30 | 1995-02-15 | 旭化成工業株式会社 | Hollow injection mold, hollow injection molding method and mold |
| JP2794261B2 (en) * | 1993-06-11 | 1998-09-03 | 株式会社日本製鋼所 | Mold for molding synthetic resin products |
| JP2010125733A (en) * | 2008-11-28 | 2010-06-10 | Digital Electronics Corp | Injection mold and resin molded component |
-
1990
- 1990-11-30 JP JP33461290A patent/JPH0753382B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04201423A (en) | 1992-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2510754B2 (en) | Method for injection molding a synthetic resin body filled with a fluid and apparatus for carrying out the method | |
| US4508676A (en) | Core stabilization by sequential injections | |
| CN106003567B (en) | Injection molding machine for molding composite molded article | |
| JPH04212822A (en) | Manufacture of hollow injection molded product using plastic and device for putting this method into practice | |
| US3947203A (en) | Apparatus for manufacturing plastics blanks | |
| WO1990008637A1 (en) | A method for injection moulding and tool for carrying out | |
| JPH0753382B2 (en) | Manufacturing method of hollow mold | |
| US4071532A (en) | Method for manufacturing plastics blanks | |
| JP3527802B2 (en) | Mold for molding multiple articles and method for molding multiple articles using this mold | |
| JP2905277B2 (en) | Injection molding method and injection mold | |
| JP2508778B2 (en) | Multicolor molding method and multicolor molding die | |
| JPS60166416A (en) | Method and apparatus for molding molded shape with casting hole | |
| JPH04143058A (en) | Injection forming apparatus | |
| JPH054977Y2 (en) | ||
| CN106696195A (en) | Mould for preventing small nylon gear from generating flash and working method for mould | |
| JPH04339617A (en) | Sandwich molding method | |
| JP2987782B2 (en) | Hollow injection molding method | |
| JPH0478510A (en) | Production of hollow resin product | |
| JPS63299844A (en) | Injection molding method | |
| JP3136416B2 (en) | Injection molding method for hollow mold | |
| JPH02192865A (en) | Method and apparatus for injection-molding | |
| JPH06238697A (en) | Method and device for molding blow-molded form | |
| JP2001287241A (en) | Method for producing thin resin plate | |
| JP4565819B2 (en) | Injection molding method and injection mold for thick and long products | |
| JPH05293844A (en) | Method of producing injection-molded item non-uniform sectional structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20080607 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20080607 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20080607 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20080607 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20080607 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080607 Year of fee payment: 13 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080607 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 14 Free format text: PAYMENT UNTIL: 20090607 |
|
| LAPS | Cancellation because of no payment of annual fees |