JPS5867265A - Production of piston member for syringe - Google Patents
Production of piston member for syringeInfo
- Publication number
- JPS5867265A JPS5867265A JP56167783A JP16778381A JPS5867265A JP S5867265 A JPS5867265 A JP S5867265A JP 56167783 A JP56167783 A JP 56167783A JP 16778381 A JP16778381 A JP 16778381A JP S5867265 A JPS5867265 A JP S5867265A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- body part
- shore
- hardness
- syringe
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は江射器用ピストン部材の製造法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a piston member for a piston gun.
従来、注射器用ピストン部材としては米国特許第４，２
１５，７０１号に示す構造のものが知られている。 第
１図に示す、この梗従来の注射器用ピストン部材は筒状
体部分１をポリエチレン等の熱可塑性樹脂で射出成形し
ておき、一方、シール部材５を天然ゴム等の熱硬化性ゴ
ム材料で圧縮成形し、ついで、筒状体部分５の一端に設
けた装着用突起２にシール部材５な装着する。 その後
、組合されたピストン部材を消毒し、包装を行なってい
た。Conventionally, as a piston member for a syringe, U.S. Patent Nos. 4 and 2
A structure shown in No. 15,701 is known. In the conventional piston member for a syringe shown in FIG. 1, the cylindrical body portion 1 is injection molded from a thermoplastic resin such as polyethylene, and the seal member 5 is made from a thermosetting rubber material such as natural rubber. After compression molding, the sealing member 5 is attached to the attachment protrusion 2 provided at one end of the cylindrical body portion 5. Thereafter, the assembled piston members were disinfected and packaged.
上述した従来法では以下の問題点を有していた。The conventional method described above had the following problems.
■ 筒状体部分１とシール部材５とを別々に成形した後
、筒状体部分１とシール部材５とを組合せる方法により
製作していたため製作費用が高価とならざるをえなかっ
たう
■ 筒状体部分１とシール部材５とを人手により組合せ
る工程が入るため、組合せ後必ず消毒工程を入れなけれ
ばならず、工程が複雑となっていった。■ Since the cylindrical body part 1 and the sealing member 5 were molded separately and then being assembled together, the manufacturing cost was inevitably high. Since a step of manually assembling the cylindrical body portion 1 and the sealing member 5 is required, a disinfection step must be performed after the assembly, making the process complicated.
本発明は上記した従来の問題点を解消したもので、ショ
アーＤ硬度で４２〜７５の範囲の熱可塑性プラスチック
材料により筒状体部を射出形成し、ついで筒状体部分の
一端にショアーＡ硬度で３０〜９５の範囲の熱可塑性プ
ラスチック材料によりシール部材を一体的に射出成形す
ることにより注射器用ピストン部材を製造するものであ
る。The present invention solves the above-mentioned conventional problems by injection molding a cylindrical body part from a thermoplastic material having a Shore D hardness of 42 to 75, and then attaching one end of the cylindrical body part to a Shore A hardness. The piston member for a syringe is manufactured by integrally injection molding a sealing member from a thermoplastic plastic material in the range of 30 to 95.
シール部材を形成するプラスチック材料としては、東し
ポリエステルエラストマータイブＳ（東し株式会社製）
、東しポリエステルエラストマータイプＭ（東し株式会
社製）、ペルブレン−Ｐ４０Ｈ（東洋紡績株式会社製）
、ハイトレルー４０５６（デュポン社製）、ＴＰＲ，−
１６００（住友化学工業株式会社製）、ＴＰＲ，−８７
２１（住友化学工業株式会社製）等のポリオレフィン系
エラストマー、サンブレーン−Ｆ２３（三菱モンサント
化成株式会社製）、スミフレックス−に７６０（住友ベ
ークライト株式会社製）、スミフレックス−に７５０（
住友ベークライト株式会社瞬等の塩化ビニール系エラス
トマー、ＫＲ，ＡＴＯＮＧ−２７０５（シェル化学株式
会社製）等の弗素樹脂系エラストマー、熱可塑性ウレタ
ンニジストマー等の熱可塑性エラストマーであって、シ
ョアＡ硬度で３０〜９５の範囲の硬度を有するものが使
用される。 ショアーＡ硬度が３０以下のものにあって
はシール部材が変形しやす（、シールに必要な形状を保
つことができない為、良好な密封性が維持できない。The plastic material forming the seal member is Toshi Polyester Elastomer Type S (manufactured by Toshi Co., Ltd.).
, Toshi Polyester Elastomer Type M (manufactured by Toyobo Co., Ltd.), Perbrene-P40H (manufactured by Toyobo Co., Ltd.)
, Hytrelu 4056 (manufactured by DuPont), TPR, -
1600 (manufactured by Sumitomo Chemical Co., Ltd.), TPR, -87
Polyolefin elastomers such as 21 (manufactured by Sumitomo Chemical Co., Ltd.), Sunbrain-F23 (manufactured by Mitsubishi Monsanto Chemical Co., Ltd.), Sumiflex-760 (manufactured by Sumitomo Bakelite Co., Ltd.), and Sumiflex-750 (manufactured by Sumitomo Bakelite Co., Ltd.)
Polyvinyl chloride elastomers such as Shun Sumitomo Bakelite Co., Ltd., fluororesin elastomers such as KR, ATONG-2705 (manufactured by Shell Chemical Co., Ltd.), thermoplastic elastomers such as thermoplastic urethane nystomers, and have a Shore A hardness of 30. Those having a hardness in the range of ~95 are used. If the Shore A hardness is 30 or less, the sealing member is easily deformed (and cannot maintain the shape required for the seal, making it impossible to maintain good sealing performance).
ショアーＡ硬紅が９５以上のものにあってはシリンダ一
部材との間の良好な蕃封性が維持できない。If the Shore A hard red is 95 or higher, good sealing properties between the cylinder and the other members cannot be maintained.
筒状体部を形成するプラスチック材料としてはポリエチ
レン、ポリプロピレン等のポリオレフィン系エラストマ
ーであって、ショアーＤ硬度で４２以上の範囲の硬度を
有するものが使用される。As the plastic material forming the cylindrical body part, a polyolefin elastomer such as polyethylene or polypropylene having a Shore D hardness of 42 or more is used.
ショアーＤ硬度が４２以丁のものは筒状体部が変形しピ
ストン是ヲ機能を果しがたい。If the Shore D hardness is 42 or more, the cylindrical body part will be deformed and the piston will not be able to perform its function.
尚、ショアーＡ硬度とショアーＤ硬度との関係は略第２
図に示す関係を有している。Furthermore, the relationship between Shore A hardness and Shore D hardness is approximately the second
They have the relationship shown in the figure.
ついで、本発明の実施例を第３図及び第４図を参照して
説明する。Next, embodiments of the present invention will be described with reference to FIGS. 3 and 4.
実施例１ ショアーＤ硬度で４５のポリエチレンを２３０’ Ｃ。Example 1 Polyethylene with Shore D hardness of 45 and 230'C.
９ｏｏ稚で、第３図の有底筒状体部分１に対応する成形
空所を形成している４０°Ｃに予熱された全型内に射出
し、筒状体部分１を形成し、ついで、該筒状体部分１の
一端（図上右側）にシール部材５の形状に対応する成形
空所を筒状体部分１外周面と金型により形成し、該成形
空所内にショアーＡ硬度で６５の’ｒＰＲ１６似し２０
０’Ｃ，５００宮二で射出し、筒状体部分１と環状のシ
ール用突起６を有するシール部材５とを一体化し、離型
後包装する。 シール部材５が保持されている部分の筒
状状体部分１を含む厚さｄは約１ｍｍであり直径りの約
１２％の厚さを有している。The mold was injected into a mold preheated to 40°C forming a molding cavity corresponding to the bottomed cylindrical body part 1 shown in FIG. 3 to form the cylindrical body part 1. A molding cavity corresponding to the shape of the sealing member 5 is formed at one end of the cylindrical body part 1 (on the right side in the figure) by the outer peripheral surface of the cylindrical body part 1 and a mold, and a molding cavity with Shore A hardness is formed in the molding cavity. 65'rPR16 similar 20
The product is injected at 0'C, 500 mm, and the cylindrical body part 1 and the sealing member 5 having the annular sealing protrusion 6 are integrated, and after being released from the mold, it is packaged. The thickness d of the portion where the seal member 5 is held, including the cylindrical body portion 1, is about 1 mm, which is about 12% of the diameter.
実施例２
ショアーＤ硬度で７２のポリプロピレン’＆ ２４０’
Ｃ１４５ｏ”ｌ＝で第４図の開口筒状体部分１に・対応
する成形空所を形成している４０Ｃに予熱された金型内
に射出し、筒状体部分１を形成し、ついで、該面状体部
分１の一端（図上右側）にシール部材５の形状に対応す
る成形空所を筒状体部分１外周面と金型により形成し、
該成形空所内にショアーＡ硬度で８９のペルブレンＰ４
０Ｈを１８０６Ｃｓ ｏ ｏ ％−ｃ射出し、筒状体部
分１と環状のシール用突起６を有するシール部材５とを
一体化し、離型後包装する。 シール部材５の肉厚ｄ′
は直径Ｄ′の約１５％の厚さを肩している。Example 2 Polypropylene with Shore D hardness of 72'&240'
C145o"l= is injected into a mold preheated to 40C forming a molding cavity corresponding to the open cylindrical body part 1 of FIG. 4 to form the cylindrical body part 1, and then, A molding cavity corresponding to the shape of the sealing member 5 is formed at one end of the planar body part 1 (on the right side in the figure) using the outer peripheral surface of the cylindrical body part 1 and a mold,
Pellbrene P4 with a Shore A hardness of 89 is placed in the molding cavity.
0H is injected at 1806 Cs o o %-c, the cylindrical body part 1 and the sealing member 5 having the annular sealing protrusion 6 are integrated, and after being released from the mold, the product is packaged. Thickness d' of sealing member 5
has a thickness of approximately 15% of the diameter D'.
上述した本発明は以下の効果を奏する。The present invention described above has the following effects.
■ 筒状体部分とシール部材とを共に熱可塑性プラスチ
ック材料で形成する方法としたため、同一成形機上で゛
面状体部分とシール部材とが同時成形されるため、従来
法に比べ製作費が安価となった。■ Since both the cylindrical body part and the sealing member are formed using thermoplastic plastic materials, the sheet-like body part and the sealing member are simultaneously molded on the same molding machine, resulting in lower production costs compared to conventional methods. It became cheaper.
■ 筒状体部分とシール部材とを人手により組合せる工
程がなくなったため、消毒工程を削除することができた
。■ Since the process of manually assembling the cylindrical body part and the seal member was eliminated, the disinfection process could be eliminated.
■ シール部材の肉厚を変形容易な寸法としているため
、シール部材の外周にシール用突起を設ける態様であっ
ても離型が容易に行なえるものである。(2) Since the thickness of the sealing member is set to a size that allows easy deformation, it is possible to easily release the sealing member even if a sealing protrusion is provided on the outer periphery of the sealing member.
１・・・筒状体部分、 ２・・・装着用突起、５・・・
シール部材、 ６・・・シール用突起、ｒｏ ２
Ｑ ｊｏ ４Ｊ ｒｏ ａｏ
７ｏ ｇｏ ｑｏ ノロ
Ｄ真３ 囚
第４ 図
手続袖正書（自発）
昭本Ｌ１５６年１１月１６日
特許庁長官 島 １） 春 衛 殿
い。1... Cylindrical body part, 2... Mounting protrusion, 5...
Seal member, 6... Seal protrusion, ro 2
Q jo 4J ro ao
7o go qo Noro D Shin 3 Prisoner No. 4 Figure Proceedings Sleeve Letter (Spontaneous) Shomoto L156 November 16, Commissioner of the Patent Office Shima 1) Tonoi Haru Mamoru.
１、事件の表示 ｆｌ−ｙｌｎｓｌ、３昭和
５６年１０月１９日提出の特許願
２ 発明の名イネ
注射器用ピストン部材の製造法
３ 補止ンする者
事件との関係 特許出願人
郵便番号 １０５
仲 所 東京都港区芝大門１丁目１２番１５号（電話４
３２−４２１１）
明細畦の発明の詳細な説明及び図面の簡単な説明の各欄
。1. Indication of the case fl-ylnsl, 3. Patent application filed on October 19, 1988 2. Name of the invention: Method for manufacturing a piston member for a rice syringe 3. Relationship with the person who makes a correction case: Patent applicant postal code: 105 Naka Address: 1-12-15 Shiba Daimon, Minato-ku, Tokyo (telephone: 4
32-4211) Each column of the detailed description of the invention and the brief description of the drawings in the specification row.
５ 補正の内容5 Contents of amendment
第１図は従来の方法により製作された注射器用ピストン
部材の部分断面図、第２図はショアーＡ硬度とショアー
Ｄ硬度との関係を示す図であり、第３図及び第４図は本
発明により得られた注射器用ピストン部材の断面図であ
る。
１・・・筒状体部分、 ２・・・装着用突起、５・・−
シール部材、 ６・−・シール用突起。」以上
４０４FIG. 1 is a partial sectional view of a piston member for a syringe manufactured by a conventional method, FIG. 2 is a diagram showing the relationship between Shore A hardness and Shore D hardness, and FIGS. It is a sectional view of the piston member for syringes obtained by. 1... Cylindrical body part, 2... Mounting protrusion, 5...-
Seal member, 6.--Protrusion for sealing. ” or more 404
Claims (1)
材料により筒状体部分（１）を射出形成し、によりシー
ル部材（５）を一体的に射出成形する注射器用ピストン
部材の製造法。 ２、シール部材（５）の径方向の肉厚が離型時径方向内
方に変形容易な厚さである請求範囲第１項記載の注射器
用ピストン部材の製造法。[Claims] 1. A piston member for a syringe, in which the cylindrical body portion (1) is injection molded from a thermoplastic material having a Shore D hardness of 42 or more, and the seal member (5) is integrally injection molded. Manufacturing method. 2. The method for manufacturing a piston member for a syringe according to claim 1, wherein the radial wall thickness of the seal member (5) is such that it is easily deformed inward in the radial direction when released from the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56167783A JPS5867265A (en) | 1981-10-19 | 1981-10-19 | Production of piston member for syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56167783A JPS5867265A (en) | 1981-10-19 | 1981-10-19 | Production of piston member for syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5867265A true JPS5867265A (en) | 1983-04-21 |
| JPH0362434B2 JPH0362434B2 (en) | 1991-09-25 |
Family
ID=15856022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56167783A Granted JPS5867265A (en) | 1981-10-19 | 1981-10-19 | Production of piston member for syringe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5867265A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02199673A (en) * | 1989-01-27 | 1990-08-08 | Nec Corp | Recording and reproducing vcr with video recording picture data guarding function |
| JPH02109643U (en) * | 1989-02-20 | 1990-09-03 | ||
| JPH08280804A (en) * | 1995-04-14 | 1996-10-29 | Koki Eng:Kk | Manufacture of syringe and piston used in the syringe |
| JP2001259031A (en) * | 2000-03-17 | 2001-09-25 | Top:Kk | Injector manufacturing method |
| JP2006502896A (en) * | 2002-10-14 | 2006-01-26 | ボーテック， ナームローゼ フェンノートシャップ | Method and apparatus for manufacturing a plunger for a medical syringe, plunger obtained thereby, and medical syringe |
| JP2008524509A (en) * | 2004-12-22 | 2008-07-10 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Piston pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5543077U (en) * | 1978-09-18 | 1980-03-19 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5543077B2 (en) * | 1974-02-28 | 1980-11-04 |
-
1981
- 1981-10-19 JP JP56167783A patent/JPS5867265A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5543077U (en) * | 1978-09-18 | 1980-03-19 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02199673A (en) * | 1989-01-27 | 1990-08-08 | Nec Corp | Recording and reproducing vcr with video recording picture data guarding function |
| JPH02109643U (en) * | 1989-02-20 | 1990-09-03 | ||
| JPH08280804A (en) * | 1995-04-14 | 1996-10-29 | Koki Eng:Kk | Manufacture of syringe and piston used in the syringe |
| JP2001259031A (en) * | 2000-03-17 | 2001-09-25 | Top:Kk | Injector manufacturing method |
| JP2006502896A (en) * | 2002-10-14 | 2006-01-26 | ボーテック， ナームローゼ フェンノートシャップ | Method and apparatus for manufacturing a plunger for a medical syringe, plunger obtained thereby, and medical syringe |
| US8071001B2 (en) | 2002-10-14 | 2011-12-06 | Boutech, Naamloze Vennotschap | Method and device for manufacturing plungers for medical syringes, plungers obtained thereby, as well as syringe for medical purposes |
| JP2008524509A (en) * | 2004-12-22 | 2008-07-10 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Piston pump |
| JP4809365B2 (en) * | 2004-12-22 | 2011-11-09 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Piston pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0362434B2 (en) | 1991-09-25 |
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