JP3238319B2 - Mask cushion and manufacturing method thereof - Google Patents
Mask cushion and manufacturing method thereofInfo
- Publication number
- JP3238319B2 JP3238319B2 JP1788196A JP1788196A JP3238319B2 JP 3238319 B2 JP3238319 B2 JP 3238319B2 JP 1788196 A JP1788196 A JP 1788196A JP 1788196 A JP1788196 A JP 1788196A JP 3238319 B2 JP3238319 B2 JP 3238319B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cushion
- mask
- molding
- port
- 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
Landscapes
- Moulding By Coating Moulds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、厚肉部分と薄肉部
分を持つプラスチック製マスククッション及びマスクク
ッション成型品をスラッシュ成形により一体に製造する
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 of integrally manufacturing a plastic mask cushion having a thick portion and a thin portion and a molded product of the mask cushion by slush molding.
【０００２】[0002]
【従来の技術】従来より、麻酔及び救急分野の気道確保
に用いる蘇生用マスクのマスククッションは、天然ゴム
やシリコーンゴム等のゴム類や塩化ビニル樹脂やポリエ
チレン樹脂等のプラスチック製品が多く使用されてい
る。ゴム類はディップ成形や圧縮成形、リム成形により
成形された後に接着等の後加工を行いクッションが作製
されるが、金型構造の関係で、クッションの継ぎ目は接
着する必要が生じ、工数がかかり、空気漏れ等の不良の
原因にもなる。また材料費もプラスチック製品に比べ高
くつく。2. Description of the Related Art Conventionally, rubber cushions such as natural rubber and silicone rubber, and plastic products such as vinyl chloride resin and polyethylene resin are often used as mask cushions for resuscitation masks used for securing airways in the field of anesthesia and emergency. I have. Rubber is molded by dip molding, compression molding, or rim molding and then subjected to post-processing such as bonding to produce a cushion.However, due to the mold structure, it is necessary to bond the seam of the cushion, which takes time. It also causes air leakage and other defects. Material costs are higher than plastic products.
【０００３】また、プラスチック製品の中で塩化ビニル
樹脂は、塩ビプラスチゾルによるディップ成形や、射出
成形とスラッシュ成形の組合せによる製法が知られてい
る。マスククッションには、例えばポリカーボネート等
で射出成形により作られたマスク本体を接着・固定する
ための厚肉部分と顔面と密に接触し気密性が持てる程度
に柔軟性を有する薄肉部分を持つのが普通であるが、塩
ビプラスチゾルによる通常のディップ、スラッシュ、回
転成形では同程度の肉厚のものを作製するのが普通であ
り、部分的に肉厚に差のあるものを一体で作製しようと
した場合、薄肉部は焼けすぎ厚肉部は半焼け（生焼け）
になることがあった。そのため、肉厚に差のある形状の
マスククッションを作製したい場合は、厚肉部を射出成
形、薄肉部をディップ成形で作製し貼り合わせるか、厚
肉部を射出成形や注型成形で作製し、スラッシュ成形金
型にはめ込んで再度材料を投入しスラッシュ成形するな
ど手間のかかる成形方法をとらざるおえなかった。[0003] Among the plastic products, a vinyl chloride resin is known to be manufactured by dip molding with PVC plastisol or by a combination of injection molding and slush molding. The mask cushion should have a thick part for bonding and fixing the mask body made by injection molding with polycarbonate etc., and a thin part that is flexible enough to be in close contact with the face and airtight. It is normal, but in normal dip, slash, and rotational molding with PVC plastisol, it is common to produce the same thickness, and we tried to integrally produce those with partially different wall thickness In the case, the thin part is too burnt and the thick part is half-baked
Had to be. Therefore, if you want to make a mask cushion with a different thickness, create a thick part by injection molding and a thin part by dip molding and paste, or create a thick part by injection molding or casting. However, a complicated molding method such as inserting the material into a slush molding die, re-feeding the material, and performing slush molding was inevitable.
【０００４】また、ポリエチレン樹脂ではブロー成形が
行われ低コストでのクッションの成形が可能であるが、
顔面に適した複雑な形状を作製するのは難しく、薄肉部
分を均一な肉厚で作製することも困難であり、感触が悪
かった。[0004] In addition, although blow molding is performed with polyethylene resin, it is possible to form a cushion at low cost.
It was difficult to produce a complex shape suitable for the face, it was also difficult to produce a thin portion with a uniform thickness, and the feel was poor.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、従来のマス
ククッションの製造方法の中で特に塩ビプラスチゾル等
の粉末或いはペースト状のプラスチック材料による成形
で厚肉部分と均一な薄肉部分を持ち、スラッシュ成形に
より一体成形されたマスククッション及びその製造方法
を提供する。SUMMARY OF THE INVENTION The present invention relates to a conventional method of manufacturing a mask cushion, which has a thick portion and a uniform thin portion formed by molding a powder or paste-like plastic material such as PVC plastisol. Provided are a mask cushion integrally formed by molding and a manufacturing method thereof.
【０００６】[0006]
【課題を解決するための手段】本発明は、粉末或いはペ
ースト状のプラスチック材料により、肉厚が１〜２０ｍ
ｍの厚肉部分は注型成形し、肉厚が０．２〜０．８ｍｍ
の薄肉部分はスラッシュ成形し、双方半硬化の状態で型
を合わせて一体成形することを特徴とするマスククッシ
ョンの製造方法である。According to the present invention, a powder or paste-like plastic material having a thickness of 1 to 20 m is provided.
The thick part of m is cast molded and the thickness is 0.2-0.8mm
Is a method of manufacturing a mask cushion, characterized in that a thin portion is subjected to slush molding, and a mold is combined and integrally molded in a semi-cured state.
【０００７】[0007]
【発明の実施の形態】以下図面により本発明を詳しく説
明する。図１は本発明の一実施例となる本発明に使用す
る金型（電鋳型）を示す図で（ａ）は型合せ状態図、
（ｂ）はポート部金型組立図、（ｃ）はクッション部金
型型開き状態図、（ｄ）はマスク本体接合部金型型開き
状態図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing a mold (electroforming mold) used in the present invention, which is one embodiment of the present invention.
(B) is an assembly drawing of a port part mold, (c) is a state diagram of a cushion part mold opening, and (d) is a state diagram of a mask body joining part mold opening state.
【０００８】本発明において使用される金型は図１に示
すような電鋳型であり、大きくマスク本体接合部金型
（１）、クッション部金型（２）、ポート部金型（７）
より構成される。マスク本体接合部金型（１）では厚肉
部分が作られ、クッション部金型（２）では薄肉部分が
作られる。マスク本体接合部金型（１）とクッション部
型（２）は電鋳型であり熱伝導性の良い銅のような材料
で作製される。また、ポート部金型（７）は図１−
（ｃ）のようにクッション部金型（２）にはめ込まれ、
クッション成形品の中では空気を注入・排出するための
中空のポート部が作られる。ポート部金型（７）は熱伝
導性の良い真鍮のような材料で作製するか、ステンレス
のような材料では内部に穴を開け熱の伝わりを良くする
必要がある。ポート部金型（７）の形状は先端に刃をも
うけ、脱型時ポート部金型（７）を抜きながら、ポート
部金型（７）にマスククッション成形品ポート部の中空
部分の材料がついて来るようにして抜き取る構造にする
と容易にマスククッションのポート部を作製できる。The mold used in the present invention is an electroforming mold as shown in FIG. 1, and is roughly divided into a mask body joining mold (1), a cushion mold (2), and a port mold (7).
It is composed of A thick portion is made in the mask body joining mold (1), and a thin portion is made in the cushion mold (2). The mask body joining mold (1) and the cushion mold (2) are electroforming molds and are made of a material having good heat conductivity, such as copper. Also, the port mold (7) is shown in FIG.
As shown in (c), it is fitted into the cushion mold (2),
A hollow port for injecting and discharging air is formed in the cushion molded product. The port mold (7) needs to be made of a material such as brass having good heat conductivity, or a material such as stainless steel needs to make a hole in the inside to improve heat transmission. The shape of the port mold (7) has a blade at the tip, and the material of the hollow part of the port portion of the mask cushion molded product is removed to the port mold (7) while removing the port mold (7) when removing the mold. The port portion of the mask cushion can be easily manufactured by adopting a structure in which the mask cushion is pulled out.
【０００９】図２に本発明に使用する連続成形装置の設
計例を示す。型合わせでは、まず、マスク本体接合部金
型（１）を連続成形装置上で移動させるため円盤に固定
させる。次に、クッション部金型（２）と組立後のポー
ト部金型（図１−（ｂ））を図１−（ｃ）のようにポー
ト部金型の型押えハンドル（８）をクッション部金型
（２）のハンドル固定部にしっかり固定させる。固定さ
せた型をマスク本体接合部金型（１）の上から型合わせ
部（９）、（１３）の向きに注意しながら位置合わせ孔
（１０）を位置合わせピン（１２）に挿入しクッション
部金型の２カ所の型押えハンドル（３）をマスク本体接
合部金型（１）のハンドル固定部（１５）にしっかり固
定させる。型合せ後、塩ビプラスチゾルの場合、型を予
熱炉に入れ回転させながら約２６０℃で３分程度型を熱
する。次に、予熱炉から型を出しクッション部金型
（２）を開き、双方の型を水平状態に置く。各型に材料
を型満杯に投入し、２０〜３０秒後にクッション部金型
（２）内の材料を一気に排出し排出しきった時点で再度
型を合わせる。FIG. 2 shows a design example of a continuous molding apparatus used in the present invention. In the mold matching, first, the mask body joining portion mold (1) is fixed to a disk for moving on the continuous molding device. Next, as shown in FIG. 1- (c), the port part mold (FIG. 1- (b)) and the port part mold holding handle (8) of the port part mold are assembled with the cushion part mold (2). Fix firmly to the handle fixing part of the mold (2). Insert the positioning hole (10) into the positioning pin (12) while paying attention to the direction of the mold matching portions (9) and (13) from above the mask main body joining portion mold (1) with the fixed mold. The two mold holding handles (3) of the mold are firmly fixed to the handle fixing part (15) of the mask body joining mold (1). After the mold matching, in the case of a PVC plastisol, the mold is placed in a preheating furnace and heated at about 260 ° C. for about 3 minutes while rotating. Next, the mold is taken out of the preheating furnace, the cushion mold (2) is opened, and both molds are placed in a horizontal state. The material is fully charged into each mold, and after 20 to 30 seconds, the material in the cushion mold (2) is discharged at a stretch, and the mold is re-attached when the material is completely discharged.
【００１０】この際、マスク本体接合部金型（１）の型
合わせ部（１３）に余分に材料を入れておく。更に、マ
スク本体接合部金型（１）を下にして型を加熱炉に入れ
約２６０℃で水平回転させながら５分３０秒程度焼く。
クッション部金型（２）内の材料は一定時間後一気に排
出した時点で一定の厚さで型の内壁で硬化し均一な肉厚
の薄肉部を形成する。水平回転の際、未硬化の塩ビプラ
スチゾルは、重力によりクッション部金型（２）とマス
ク本体接合部金型（１）の間に流れ込んで硬化しクッシ
ョン部とマスク本体接合部が一体化され厚肉部が形成さ
れる。その際、塩ビプラスチゾルの流動性（粘度）や金
型形状によっては、重力と回転運動の併用のよる接合部
の均質一体化を必要とせず、水平回転せずに加熱炉の中
で水平を維持した状態の静置でも良い。その後炉から出
し水冷後、まず、組立てたポート部金型（図１−
（ｃ））を抜き取り、空気を導通させ、次に、クッショ
ン部金型（２）を開きクッション部金型（２）に付いて
きたクッション成形品を脱型する。また、本実施例では
金型の加熱を均一にするために金型の回転を行ったもの
である。予熱炉及び加熱炉の性能や方式（電熱、ガス燃
焼、高周波）により加熱状態が異なることは本発明を制
約するものではない。At this time, an extra material is put in the mold matching portion (13) of the mold (1) for joining the mask body. Further, the mold is put in a heating furnace with the mold (1) of the mask body joint portion downward, and baked for about 5 minutes and 30 seconds while being horizontally rotated at about 260 ° C.
The material in the cushion mold (2) is hardened on the inner wall of the mold at a certain thickness when it is discharged at a stretch after a certain time to form a thin portion having a uniform thickness. At the time of horizontal rotation, the uncured PVC plastisol flows between the cushion mold (2) and the mask body joining mold (1) due to gravity and cures, and the cushion and mask body joining parts are integrated and thickened. A flesh is formed. At this time, depending on the flowability (viscosity) of the PVC plastisol and the shape of the mold, it is not necessary to use a combination of gravity and rotational motion to homogenize the joints, and maintain the level in the heating furnace without horizontal rotation. It may be left standing. After taking out of the furnace and cooling with water, first, the assembled port mold (Fig. 1-
(C)) is taken out, air is conducted, and then the cushion mold (2) is opened to release the cushion molded product attached to the cushion mold (2). In this embodiment, the mold is rotated in order to make the heating of the mold uniform. The fact that the heating state differs depending on the performance and method (electric heating, gas combustion, high frequency) of the preheating furnace and the heating furnace does not limit the present invention.
【００１１】マスククッションの肉厚は、厚肉部はマス
ク本体を接着固定するためマスク本体側より押しつけた
時破れたり変形したりしない強度が必要であり、また接
着作業し易い保形性が必要であるため１〜２ｍｍ程度が
良く１ｍｍより薄いと破れる恐れがあり、２０ｍｍより
厚いとマスクが大きくなり、使用上保持がしにくくな
る。薄肉部は顔面と密に接触し、気密性が保てる程度に
柔軟性を有する必用があり０．２〜０．８ｍｍ程度が良
く０．２ｍｍより薄いと破裂強度が低く破裂し易くな
り、０．８ｍｍより厚いと、顔面の形状に合わせて密に
接触できなくなり気密性が悪くなる。The thickness of the mask cushion is such that the thick portion must be strong enough not to be torn or deformed when pressed from the mask body side in order to adhere and fix the mask body, and also to have a shape-retaining property that facilitates the bonding operation. Therefore, the thickness is preferably about 1 to 2 mm, and if it is thinner than 1 mm, the mask may be broken. The thin portion must be in close contact with the face and have sufficient flexibility to maintain airtightness. The thickness is preferably about 0.2 to 0.8 mm, and if it is thinner than 0.2 mm, the bursting strength is low and it is easy to burst. If it is thicker than 8 mm, it will not be possible to make close contact according to the shape of the face, resulting in poor airtightness.
【００１２】使用する粉体或いはペースト状のプラスチ
ック材料には塩ビプラスチゾルやオレフィン系、シリコ
ーンゴム系の材料等があり、特に限定されるものではな
いが厚肉部と薄肉部の焼け具合が同程度であるために熱
安定性が良く、均一なクッション膜を得るために流動性
があり、用途上顔面に接触するため安全性に優れ、刺激
臭でなく、十分な柔軟性を持つことが必要である。塩ビ
プラスチゾルの場合、例えば次のような配合で作製する
ことができる。 ＰＶＣペーストレジン：１００部（重合度１６００） 可塑剤（ＤＯＰ） ： ８０部 可塑剤（ＤＮＰ） ： ５０部 安定剤（Ca/Zn系） ： ２部The powdery or paste-like plastic materials used include vinyl chloride plastisol, olefin-based, and silicone rubber-based materials, and are not particularly limited, but the degree of burning of the thick part and the thin part is almost the same. Therefore, it is necessary to have good thermal stability, fluidity to obtain a uniform cushion film, excellent safety due to contact with the face for use, not irritating odor, and sufficient flexibility is there. In the case of PVC plastisol, for example, it can be prepared with the following composition. PVC paste resin: 100 parts (degree of polymerization: 1600) Plasticizer (DOP): 80 parts Plasticizer (DNP): 50 parts Stabilizer (Ca / Zn-based): 2 parts
【００１３】[0013]
【発明の効果】本発明の方法に従うことにより、従来作
製するのに手間のかかった塩ビプラスチゾル等の粉末或
いはペースト状のプラスチック材料による厚肉、薄肉部
分を持つマスククッションを、一体で成形することがで
き、あらかじめ厚肉成形品を作っておいたり、後加工で
貼り合わせをする手間がなくなり、工業的なマスククッ
ション及びその製造方法として好適である。According to the method of the present invention, it is possible to integrally form a mask cushion having a thick or thin portion made of a powdery or pasty plastic material such as PVC plastisol, which has been troublesome to produce conventionally. Therefore, there is no need to prepare a thick molded product in advance or to perform lamination by post-processing, which is suitable as an industrial mask cushion and a manufacturing method thereof.
【図１】本発明に使用する金型（電鋳型）の一実施例 （ａ）型合せ状態図 （ｂ）ポート部金型組立図 （ｃ）クッション部金型型開き状態図 （ｄ）マスク本体接合部金型型開き状態図FIG. 1 shows an embodiment of a mold (electroforming mold) used in the present invention. (A) Mold matching diagram (b) Port mold assembly diagram (c) Cushion mold opening diagram (d) Mask Main body joint mold opening state diagram
【図２】本発明に使用する連続成形装置の設計例FIG. 2 is a design example of a continuous molding apparatus used in the present invention.
１．マスク本体接合部金型 ２．クッション部金型 ３．８．型押えハンドル ４．止めピン ５．６．バネ ７．ポート部金型 ９．１３．型合わせ部 １０．位置合わせ孔 １１．ハンドル固定部 １２．位置合わせピン １４．マスク本体接合部 1. 1. Mask body joint mold Cushion mold 3.8. Presser handle 4. Locking pin 5.6. Spring 7. Port part mold 9.13. Mold matching part 10. Positioning hole 11. Handle fixing part 12. Alignment pin 14. Mask body joint
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 41/18 A61M 16/06 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) B29C 41/18 A61M 16/06
Claims (1)
料により、肉厚が１〜２０ｍｍの厚肉部分は注型成形
し、肉厚が０．２〜０．８ｍｍの薄肉部分はスラッシュ
成形し、双方半硬化の状態で型を合わせて一体成形する
ことを特徴とするマスククッションの製造方法。1. A thick portion having a thickness of 1 to 20 mm is cast and molded, and a thin portion having a thickness of 0.2 to 0.8 mm is formed by slush molding using a powder or paste-like plastic material. A method of manufacturing a mask cushion, comprising combining a mold in a cured state and integrally forming the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1788196A JP3238319B2 (en) | 1996-02-02 | 1996-02-02 | Mask cushion and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1788196A JP3238319B2 (en) | 1996-02-02 | 1996-02-02 | Mask cushion and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09207152A JPH09207152A (en) | 1997-08-12 |
| JP3238319B2 true JP3238319B2 (en) | 2001-12-10 |
Family
ID=11956050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1788196A Expired - Fee Related JP3238319B2 (en) | 1996-02-02 | 1996-02-02 | Mask cushion and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3238319B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100895255B1 (en) | 2007-09-04 | 2009-04-29 | 주식회사 세라젬 | Manufacturing method of air mat |
| EP2219719B1 (en) | 2007-11-15 | 2017-12-27 | ResMed Limited | A cushioning structure |
| CN102046233B (en) | 2008-05-29 | 2016-03-09 | 瑞思迈有限公司 | For the flexible structure of face shield, and the method and apparatus of assessment face shield performance in use |
| CN118124059A (en) * | 2024-03-19 | 2024-06-04 | 宁波圣宇瑞医疗器械有限公司 | Medical anesthesia mask manufacturing equipment |
-
1996
- 1996-02-02 JP JP1788196A patent/JP3238319B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09207152A (en) | 1997-08-12 |
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