JP2940987B2 - Faucet sealing method - Google Patents
Faucet sealing methodInfo
- Publication number
- JP2940987B2 JP2940987B2 JP2069253A JP6925390A JP2940987B2 JP 2940987 B2 JP2940987 B2 JP 2940987B2 JP 2069253 A JP2069253 A JP 2069253A JP 6925390 A JP6925390 A JP 6925390A JP 2940987 B2 JP2940987 B2 JP 2940987B2
- Authority
- JP
- Japan
- Prior art keywords
- plug
- film
- stopper
- sheet
- sealing
- 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 - Lifetime
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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
- B29C66/53261—Enclosing tubular articles between substantially flat elements
- B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/133—Fin-type joints, the parts to be joined being flexible
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
- B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
- B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
- B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
- B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
- B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
- B29C66/91933—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/0625—LLDPE, i.e. linear low density polyethylene
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/0633—LDPE, i.e. low density polyethylene
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7148—Blood bags, medical bags
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は口栓部の密封性が改善された口栓付医療用バ
ッグおよび口栓の融着方法に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical bag with a plug having an improved sealing property of a plug and a method for fusing a plug.
医療用の液体容器、特に柔軟性を有するソフトバッグ
は最近その安全性、使い易さ、安全性等の面よりポリオ
レフィン系の材料が使用され始めている。しかしこれら
医療用の液体容器（例えば輸液バッグやCAPDバッグな
ど）は、容器は非常に高度の品質レベルが要求され、特
に口栓部等に於ける融着性は最も重要な部分である。ま
た材料に於いても安全性の高い、ポリオレフィン系の材
料が使用され始めているが、例えばポリエチレン（PE）
やポリプロピレン（PP）等はこれらのフィルムやシート
が外部より容易に熱板等により加熱融解、圧着によりヒ
ートシールできることにより、包装用材料として広く利
用されている。Recently, polyolefin-based materials have begun to be used for medical liquid containers, particularly soft bags having flexibility, in view of their safety, ease of use, and safety. However, these medical liquid containers (for example, infusion bags and CAPD bags) require a very high quality level of the containers, and particularly, the fusibility in the plug portion and the like is the most important part. Polyolefin-based materials, which are highly safe, have begun to be used. For example, polyethylene (PE)
And polypropylene (PP) are widely used as packaging materials because these films and sheets can be easily heat-melted with a hot plate or the like and heat-sealed by pressure bonding.
しかしこれらの材料の従来のヒートシールの方法は厚
みの比較的薄いフィルム（100μ以下）や液体容器用と
して口栓を融着するにしても、ストロー（円筒状）など
直径（外径）が5mmφ以下と比較的細い口栓との融着が
主で、フィルム・シート等の外部よりの加熱融着で充分
対応できた。However, the conventional heat-sealing method of these materials has a relatively thin film (100μ or less) or a spout for a liquid container, but the diameter (outer diameter) such as a straw (cylindrical) is 5mmφ. The following was mainly used for fusion with a relatively thin plug, and heat fusion from the outside, such as a film or sheet, was sufficient.
しかし先に述べたように医療用のソフトバッグにおい
てはフィルム・シートの厚みが100μ以上、主に250〜40
0μと非常に厚く、また口栓に於いても注射針等を挿入
し易くするため直径の大きい（5mmφ以上、主に10mmφ
〜20mmφ）口栓を融着させる必要が生じてきた。このた
め口栓の形状等に於いて種々の検討が行なわれ、例えば
円筒状の口栓の両サイドに薄いタブを取り付けた形状の
ものを用いることにより薄いタブ部を容易に融解させて
フィルム・シートとの融着性を良くする工夫がなされて
いた。However, as mentioned above, in soft bags for medical use, the thickness of the film / sheet is 100 μ or more, mainly 250 to 40
It is very thick, 0μ, and has a large diameter (more than 5mmφ, mainly 10mmφ) for facilitating insertion of injection needle etc.
〜20 mmφ) It has become necessary to fuse the plug. For this reason, various studies have been conducted on the shape of the plug and the like.For example, by using a cylindrical plug with thin tabs attached to both sides, a thin tab portion can be easily melted to form a film or a plug. A device for improving the fusion property with the sheet has been devised.
しかしながら、前記のような従来技術の方法では、外
部よりフィルム・シートを加熱することのみで、厚みの
大きいフィルム・シートと直径の大きい口栓との融着性
を高度のレベルに維持することはなかなか困難であっ
た。例えば充分な熱を口栓とフィルム・シートの融着界
面に伝えるため外部よりの加熱温度を高くしたり、また
シール時間を長くすると、これにより口栓とフィルム・
シートの界面の融着は良好になるものの、これにより口
栓の両側（対称方向）のフィルム・シートが溶かされ
て、口栓と融着部分のフィルム・シートの厚みが薄くな
ってしまい、結果的に内容液を充てんしたバッグの落袋
強度が小さくなってしまい、実用にならないと問題点が
あった。However, in the above-mentioned prior art method, it is not possible to maintain a high level of fusion between a thick film sheet and a large-diameter plug by simply heating the film sheet from the outside. It was very difficult. For example, if the external heating temperature is increased to transfer sufficient heat to the fusion interface between the plug and the film / sheet, or if the sealing time is extended, the plug and the film / sheet will be constrained.
Although the fusion at the sheet interface is improved, the film and sheet on both sides (symmetrical direction) of the plug are melted, and the thickness of the film and sheet at the fusion portion with the plug is reduced. The dropping strength of the bag filled with the contents liquid is low, and there is a problem if it is not practical.
本発明が解決しようとする課題は、これら従来技術の
問題点を解決し、口栓部の密封性が改善された口栓付医
療用バッグを提供することである。The problem to be solved by the present invention is to solve the problems of the prior art and to provide a medical bag with a plug in which the sealing property of the plug is improved.
本発明者らは前記課題を解決すべく鋭意研究を続けた
結果、厚みの大きいポリオレフィン系のフィルム・シー
トにおいても、かつ直径の大きい円筒状の口栓に対して
も、非常にすぐれた密封性を有する融着が可能になるこ
とを見い出した。The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have excellent sealing performance even for a polyolefin-based film / sheet having a large thickness and a cylindrical stopper having a large diameter. Have been found to be possible.
即ち、本発明は厚み100μ以上の２枚のフィルムまた
はシート間に、外径5mmφ以上の円筒状の口栓を融着し
てシールする方法において、口栓がフィルムまたはシー
トと接する前に、口栓の表面を口栓の材料の融点より15
〜80℃高い温度で融解させると同時に、口栓の両サイド
に0.2〜3mm幅の融着タブを形成させてから、２枚の上記
フィルム又はシートを対称方向から口栓に押しつけて融
着することにより著しく口栓部の密封性を向上させた口
栓の融着方法に関する。予め融解させる温度が融点より
15℃高い温度以下では融解が不十分であり、また80℃高
い温度以上では口栓が変形してしまうので好ましくな
い。またこの円筒状の口栓については真円状のものが一
般的であるが、楕円状のものでもかまわないが、この場
合は直径の値が楕円の短径に相当する。That is, the present invention relates to a method of fusing and sealing a cylindrical plug having an outer diameter of 5 mmφ or more between two films or sheets having a thickness of 100 μ or more. The surface of the stopper should be higher than the melting point of the material of the stopper 15
Melt at ~ 80 ° C higher temperature and form a fusion tab of 0.2 ~ 3mm width on both sides of the plug, then press and fuse the two films or sheets against the plug from the symmetrical direction The present invention relates to a method for fusing a plug, which significantly improves the sealing performance of the plug. Pre-melting temperature is higher than melting point
If the temperature is higher than 15 ° C., melting is insufficient, and if the temperature is higher than 80 ° C., the plug is undesirably deformed. The cylindrical plug is generally in the shape of a perfect circle, but may be in the shape of an ellipse. In this case, the value of the diameter corresponds to the minor axis of the ellipse.
またこのようにして口栓の表面をシール全に事前に融
解させる方法に於いて、両サイドより熱板で加熱融解さ
せることによって、２枚の熱板のすき間に口栓より融解
した樹脂がタブ状に少しはみ出した状態になるように加
熱融解させることが更に好ましい。In addition, in the method in which the surface of the plug is melted in advance in the entire seal in this manner, the resin melted from the plug is heated and melted with a hot plate from both sides so that the resin melts from the plug in the gap between the two hot plates. It is more preferable to melt by heating so as to slightly protrude into a shape.
このタブは0.2〜3mm程出た状態が望ましくこの状態で
フィルム・シートとヒートシールすることにより一段と
密封性にすぐれたシールができる。この口栓シール部の
融着タブは第１図および第２図に示すように、シール済
みの製品の肉眼観察でも明瞭に認められるが、タブの幅
については拡大鏡又は顕微鏡で正確に測定することがで
きる。It is desirable that the tab is protruded by about 0.2 to 3 mm. In this state, heat sealing with the film sheet can provide a more excellent seal. As shown in FIG. 1 and FIG. 2, the fusion tab of the plug seal portion is clearly recognized by visual observation of the sealed product, but the width of the tab is accurately measured with a magnifying glass or a microscope. be able to.
このタブの幅は口栓の密封性に大きな影響を及ぼし、
特に落袋試験におけるハクリ強度の低下を少なくするた
めには、0.2〜3mm、特に好ましくは１〜2.5mmであるこ
とが望ましい。The width of this tab has a great effect on the sealing of the plug,
In particular, in order to reduce the decrease in the peel strength in the bag drop test, it is desirable that the thickness be 0.2 to 3 mm, particularly preferably 1 to 2.5 mm.
0.2mm以下では予備融解の効果は得られるもののタブ
生成による強度の上昇効果が少ない。又、3mm以上とな
るとシール時の肉が盛り上って、フィルムとの密着性が
かえって悪くなるので好ましくない。本発明により、厚
みの大きいフィルム・シートや直径の大きい円筒状の口
栓に対してもすぐれた融着ができることを以下の実施例
及び比較例をもって示す。If it is less than 0.2 mm, the effect of pre-melting can be obtained, but the effect of increasing the strength by tab formation is small. On the other hand, when the thickness is 3 mm or more, the meat at the time of sealing rises, and the adhesion to the film is rather deteriorated. The following Examples and Comparative Examples show that excellent fusion can be achieved by the present invention even to a thick film sheet or a large-diameter cylindrical plug.
実施例１〜５及び比較例１〜５ LDPE（ショウレックスM112:MFR＝1.2,密度0.927,融点
115℃）の材料を使用してそれぞれのフィルム・シート
及び口栓（射出成形：肉厚1mm,それぞれの直径の円筒
状）を作った。このフィルム・シート及び口栓を使用し
て、先ず口栓表面加熱温度により加熱金型により第１表
に示した各温度に口栓を約２秒間加熱した。この結果実
施例１〜５に於いては口栓の表面が溶融していることが
加熱金型を外した状態を目視することにより明らかに分
かった。この口栓を２秒以内に各厚みのフィルム・シー
ト２枚をこの口栓に対して対称にして外面よりシール熱
板により押しつけてヒートシールした。このようにして
得られた結果を第１表に示した。一方口栓表面加熱なし
又は融点以下で表面が融けない状態のものを比較例１〜
５に示した。これらのサンプルについて口栓とフィルム
・シートのハクリ強度を測定した。またこの各条件で口
栓付きバッグ〔フィルム厚み250μ、幅140mm、全長350m
m〕（第１図）を作り１の水を入れて口栓をシール
し、口栓部より2mの高さより５回落下後の、口栓部のハ
クリ強度を測定した。第１表より分かるように口栓表面
加熱により、落袋後のハクリ強度に著しい差があり、
又、シール部融着タブの形成により、更に差が増大して
いることから本発明の効果が明らかである。Examples 1 to 5 and Comparative Examples 1 to 5 LDPE (SHOWLEX M112: MFR = 1.2, density 0.927, melting point
(115 ° C.) were used to make the respective film sheets and plugs (injection molding: 1 mm thick, cylindrical of each diameter). Using the film / sheet and the plug, the plug was first heated to a temperature shown in Table 1 for about 2 seconds by a heating mold at a plug surface heating temperature. As a result, in Examples 1 to 5, it was clearly found that the surface of the plug was melted by visually observing the state where the heating mold was removed. This plug was heat-sealed within 2 seconds by pressing two films / sheets of each thickness symmetrically with respect to the plug from the outer surface with a sealing hot plate. The results thus obtained are shown in Table 1. On the other hand, those with the surface of the spout not heated or having a surface that does not melt at or below the melting point are compared with Comparative Examples 1 to 4.
5 is shown. For these samples, the peel strength of the plug and the film / sheet was measured. In each of these conditions, a bag with a stopper (film thickness 250μ, width 140mm, total length 350m
m] (FIG. 1) was prepared, water was added thereto, and the plug was sealed. After dropping five times from a height of 2 m from the plug, the peel strength of the plug was measured. As can be seen from Table 1, there is a remarkable difference in the peel strength after dropping the bag due to the heating of the plug surface.
The effect of the present invention is apparent from the fact that the difference is further increased by forming the sealing portion fusion tab.
比較例５から分かるように口栓の直径が小さい時は比
較的表面予備加熱が無くても良好であるが直径が5mm以
上に大きくなると表面予備加熱の効果が顕著である。As can be seen from Comparative Example 5, when the diameter of the plug is small, it is good even without surface preheating, but when the diameter is larger than 5 mm, the effect of surface preheating is remarkable.
また同様の現象が実施例6,7、及び比較例6,7よりＬ−
LDPE,PPに於いても現われる。比較例8,9は従来のタブ口
栓の例であるが、タブの長さが長く、又表面予備加熱温
度が低いと、落袋後のハクリ強度が弱いことが分かる。The same phenomenon was observed in Examples 6 and 7 and Comparative Examples 6 and 7,
Appears in LDPE and PP. Comparative Examples 8 and 9 are examples of conventional tab stoppers. It can be seen that when the tab is long and the surface preheating temperature is low, the peel strength after dropping the bag is weak.
第１図は本発明に係わる口栓付医療用バッグの一例を示
したものである。 第２図は第１図のＡ−Ａ′切断面の拡大図を示したもの
である。 １……フィルム・シート、２……口栓 ３……トップシール部 ４……口栓シール部の融着タブ ５……ボトムシール部FIG. 1 shows an example of a medical bag with a plug according to the present invention. FIG. 2 is an enlarged view of a section taken along the line AA 'of FIG. DESCRIPTION OF SYMBOLS 1 ... Film sheet, 2 ... Plug 3 ... Top seal part 4 ... Fusion tab of plug seal part 5 ... Bottom seal part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野村 幸宏 東京都港区芝大門１丁目13番９号 昭和 電工株式会社内 (56)参考文献 特開 昭61−262118（ＪＰ，Ａ) 特開 昭62−44256（ＪＰ，Ａ) 実開 昭61−194638（ＪＰ，Ｕ) 実開 平２−16707（ＪＰ，Ｕ) 実公 平１−22664（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 65/02 - 65/76 A61J 1/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yukihiro Nomura 1-13-9 Shiba-Daimon, Minato-ku, Tokyo Inside Showa Denko KK (56) References JP-A-61-262118 (JP, A) JP-A-62 −44256 (JP, A) Japanese Utility Model 61-194638 (JP, U) Japanese Utility Model 2-16707 (JP, U) Japanese Utility Model 1-222664 (JP, Y2) (58) Field surveyed (Int.Cl) . 6, DB name) B29C 65/02 - 65/76 A61J 1/00
Claims (2)
ート間に、外径5mmφ以上の円筒状の口栓を融着してシ
ールする方法において、口栓がフィルムまたはシートと
接する前に、口栓の表面を口栓の材料の融点より15〜80
℃高い温度で融解させると同時に、口栓の両サイドに0.
2〜3mm幅の融着タブを形成させてから、２枚の上記フィ
ルム又はシートを対称方向から口栓に押しつけて融着す
ることを特徴とする口栓の融着シール方法。1. A method of sealing a cylindrical plug having an outer diameter of at least 5 mmφ between two films or sheets having a thickness of at least 100 μm and sealing the plug before the plug comes into contact with the film or sheet. The surface of the stopper should be 15 to 80 from the melting point of the material of the stopper.
Melt at a high temperature and at the same time add 0.
A fusion sealing method for a plug, comprising: forming a fusion tab having a width of 2 to 3 mm; and pressing and fusing the two films or sheets to the plug in a symmetrical direction.
ート間に、外径5mmφ以上の円筒状の口栓を融着してシ
ールする方法において、口栓がフィルムまたはシートと
接する前に、口栓の表面を口栓の材料の融点より15〜80
℃高い温度で融解させると同時に、口栓の両サイドに0.
2〜3mm幅の融着タブを形成させてから、２枚の上記フィ
ルム又はシートを対称方向から口栓に押しつけて融着し
て得られる口栓付医療用バッグ。2. A method for fusing and sealing a cylindrical plug having an outer diameter of 5 mm or more between two films or sheets having a thickness of 100 μ or more, wherein the plug is brought into contact with the film or sheet before the plug comes into contact with the film or sheet. The surface of the stopper should be 15 to 80 from the melting point of the material of the stopper.
Melt at a high temperature and at the same time add 0.
A medical bag with a stopper obtained by forming a fusion tab having a width of 2 to 3 mm and pressing the two films or sheets against the stopper in a symmetrical direction and fusing them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2069253A JP2940987B2 (en) | 1990-03-19 | 1990-03-19 | Faucet sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2069253A JP2940987B2 (en) | 1990-03-19 | 1990-03-19 | Faucet sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03268925A JPH03268925A (en) | 1991-11-29 |
| JP2940987B2 true JP2940987B2 (en) | 1999-08-25 |
Family
ID=13397383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2069253A Expired - Lifetime JP2940987B2 (en) | 1990-03-19 | 1990-03-19 | Faucet sealing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2940987B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007000452A (en) * | 2005-06-24 | 2007-01-11 | Hanshin Kasei Kogyo Kk | Plastic bag and its manufacturing method |
| US7306553B2 (en) | 2002-10-29 | 2007-12-11 | Hosokawa Yoko Co., Ltd. | Bag-making method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2775396B2 (en) * | 1994-09-02 | 1998-07-16 | 川澄化学工業株式会社 | Medical bag and manufacturing method thereof |
| JP4004650B2 (en) * | 1998-07-16 | 2007-11-07 | 日本ポリプロ株式会社 | Mouth material |
-
1990
- 1990-03-19 JP JP2069253A patent/JP2940987B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7306553B2 (en) | 2002-10-29 | 2007-12-11 | Hosokawa Yoko Co., Ltd. | Bag-making method |
| JP2007000452A (en) * | 2005-06-24 | 2007-01-11 | Hanshin Kasei Kogyo Kk | Plastic bag and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03268925A (en) | 1991-11-29 |
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