JP5739149B2 - Method for manufacturing medical bag and medical bag - Google Patents

Method for manufacturing medical bag and medical bag Download PDF

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Publication number
JP5739149B2
JP5739149B2 JP2010275463A JP2010275463A JP5739149B2 JP 5739149 B2 JP5739149 B2 JP 5739149B2 JP 2010275463 A JP2010275463 A JP 2010275463A JP 2010275463 A JP2010275463 A JP 2010275463A JP 5739149 B2 JP5739149 B2 JP 5739149B2
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Japan
Prior art keywords
mouth
heating
medical bag
manufacturing
heating step
Prior art date
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JP2010275463A
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Japanese (ja)
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JP2012120765A (en
Inventor
剛 有泉
剛 有泉
直也 雨宮
直也 雨宮
晃 折戸
晃 折戸
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TRUMO KABUSHIKI KAISHA
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TRUMO KABUSHIKI KAISHA
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Priority to JP2010275463A priority Critical patent/JP5739149B2/en
Priority to CN201110415402.4A priority patent/CN102555296B/en
Publication of JP2012120765A publication Critical patent/JP2012120765A/en
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Publication of JP5739149B2 publication Critical patent/JP5739149B2/en
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    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • 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
    • B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C66/914—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
    • B29C66/91441—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 the temperature being non-constant over time
    • B29C66/91443—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 the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—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 the temperature being non-constant over time following a temperature-time profile by steps
    • 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
    • B29C66/90—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
    • B29C66/91935—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 lower 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
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4895—Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives
    • 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
    • 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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—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 structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72341—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 structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
    • 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
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Description

本発明は、医療用バッグの製造方法および医療用バッグに関する。   The present invention relates to a method for manufacturing a medical bag and a medical bag.

医療用バッグとして、樹脂性シート材を融着することによって、内部に輸液や腹膜透析液等の液体を密封したものが知られている。樹脂性シート材の融着は、一般に、２枚のシート材を重ね合わせ、一対のシール金型で挟み、加熱することにより行なわれる。その際、２枚のシート材間に、液体の例えば排出口となる管状のポート部材を配置して、該ポート部材ごと融着を行なう。これにより、各シート材とポート部材とが接合される（例えば、特許文献１参照）。   A medical bag is known in which a resinous sheet material is fused to seal a liquid such as an infusion solution or a peritoneal dialysis solution. Generally, the resinous sheet material is fused by stacking two sheet materials, sandwiching them between a pair of seal dies, and heating. At that time, a tubular port member, for example, serving as a discharge port for the liquid is disposed between the two sheet members, and the entire port member is fused. Thereby, each sheet material and a port member are joined (for example, refer to patent documents 1).

しかしながら、各シート材とポート部材とを融着する際に各シート材をその融点まで一気に加熱すると、シート材の融着部が急激に過剰に変形して、当該融着部にピンホールを生じたり、その肉厚が極端に薄くなる部分が生じる。ピンホールが存在すると、ガスバリア性が損なわれ、例えば、空気中の水分、酸素、二酸化炭素などが侵入し、医療用バッグ内の薬剤を変質させる場合がある。また、シート材の肉厚が部分的に極端に薄くなっていると、医療用バッグに落下等の衝撃が加わった場合に、医療用バッグの破袋等が生じ易くなる。   However, when each sheet material and the port member are fused, if each sheet material is heated to its melting point at once, the fused portion of the sheet material is suddenly excessively deformed, resulting in a pinhole in the fused portion. Or the part where the thickness becomes extremely thin arises. When pinholes are present, the gas barrier properties are impaired, and for example, moisture, oxygen, carbon dioxide, etc. in the air may invade and alter the medicine in the medical bag. Further, if the thickness of the sheet material is extremely thin, the medical bag is likely to be broken when an impact such as dropping is applied to the medical bag.

特公平６−３８８２９号公報Japanese Patent Publication No. 6-38829

本発明の目的は、バッグ本体と口部形成部材とを有する医療用バッグを製造する際に、バッグ本体と口部形成部材とを確実に液密に接合することができる医療用バッグの製造方法、および、かかる医療用バッグの製造方法で製造される医療用バッグを提供することにある。   An object of the present invention is to provide a method for manufacturing a medical bag capable of reliably liquid-tightly bonding the bag main body and the mouth portion forming member when manufacturing a medical bag having the bag body and the mouth portion forming member. And it is providing the medical bag manufactured with the manufacturing method of this medical bag.

このような目的は、下記（１）〜（１１）の本発明により達成される。
（１） 液体を収納可能な袋状をなす、第１の樹脂材料で構成された軟質のバッグ本体の縁部に開口して設けられた口部に、前記液体が通過する、第２の樹脂材料で構成された硬質の口部形成部材を装着して医療用バッグを製造する方法であって、
前記バッグ本体の前記口部に前記口部形成部材を挿入し、その状態で前記口部を前記第１の樹脂材料の融点よりも低い温度まで加熱して、前記口部が前記口部形成部材の外形形状に沿うように前記口部に形状付けを行なう第１の加熱工程と、
前記口部に前記口部形成部材が挿入された前記バッグ本体の、前記口部を前記第１の樹脂材料の融点よりも高い温度で加熱して、前記口部に前記口部形成部材を融着する第２の加熱工程とを有することを特徴とする医療用バッグの製造方法。 Such an object is achieved by the present inventions (1) to (11) below.
(1) Second resin in which the liquid passes through an opening provided at an edge portion of a soft bag body made of a first resin material, which has a bag shape capable of storing liquid. A method of manufacturing a medical bag by mounting a hard mouth forming member made of a material,
The mouth forming member is inserted into the mouth of the bag body, and the mouth is heated to a temperature lower than the melting point of the first resin material in that state, so that the mouth is the mouth forming member. A first heating step for shaping the mouth so as to conform to the outer shape of
The bag body of which the mouth part forming member is inserted into the mouth part is heated at a temperature higher than the melting point of the first resin material to melt the mouth part forming member into the mouth part. And a second heating step for wearing. A method for producing a medical bag.

（２） 前記第１の加熱工程での加熱温度は、前記第２の加熱工程での加熱温度よりも低い上記（１）に記載の医療用バッグの製造方法。   (2) The manufacturing method of the medical bag according to (1), wherein the heating temperature in the first heating step is lower than the heating temperature in the second heating step.

（３） 前記第１の樹脂材料と前記第２の樹脂材料とは、それぞれ、その主材料がポリプロピレンのものであり、
前記第１の加熱工程での加熱温度は、６０〜１００度であり、前記第２の加熱工程での加熱温度は、１５０〜１９０度であり、
前記第１の加熱工程での加熱時間および前記第２の加熱工程での加熱時間は、それぞれ、３．０〜７．０秒である上記（１）または（２）に記載の医療用バッグの製造方法。 (3) Each of the first resin material and the second resin material has a main material of polypropylene,
The heating temperature in the first heating step is 60 to 100 degrees, the heating temperature in the second heating step is 150 to 190 degrees,
The heating time in the first heating step and the heating time in the second heating step are 3.0 to 7.0 seconds, respectively, in the medical bag according to (1) or (2) above. Production method.

（４） 前記第１の加熱工程および前記第２の加熱工程での加熱を、それぞれ、金型を用いて行なう上記（１）ないし（３）のいずれかに記載の医療用バッグの製造方法。   (4) The method for manufacturing a medical bag according to any one of (1) to (3), wherein the heating in the first heating step and the second heating step is performed using a mold.

（５） 前記第１の加熱工程に先立って、前記口部形成部材を前記第２の樹脂材料の融点よりも高い温度まで加熱する部材加熱工程を有する上記（１）ないし（４）のいずれかに記載の医療用バッグの製造方法。   (5) Any of the above (1) to (4) including a member heating step of heating the mouth forming member to a temperature higher than the melting point of the second resin material prior to the first heating step. The manufacturing method of the medical bag as described in any one of.

（６） 前記第２の樹脂材料は、その主材料がポリプロピレンのものであり、
前記部材加熱工程での加熱温度は、１９０〜２３０度であり、
前記部材加熱工程での加熱時間は、２．０〜６．０秒である上記（５）に記載の医療用バッグの製造方法。 (6) The second resin material has a main material of polypropylene,
The heating temperature in the member heating step is 190 to 230 degrees,
The heating time in the said member heating process is a manufacturing method of the medical bag as described in said (5) which is 2.0-6.0 second.

（７） 前記第２の加熱工程の後に、前記口部を前記第１の樹脂材料の融点よりも低い温度まで冷却する冷却工程を有する上記（１）ないし（６）のいずれかに記載の医療用バッグの製造方法。   (7) The medical treatment according to any one of (1) to (6), further including a cooling step of cooling the mouth portion to a temperature lower than the melting point of the first resin material after the second heating step. Manufacturing method for a bag.

（８） 前記第１の樹脂材料は、その主材料がポリプロピレンのものであり、
前記冷却工程での冷却温度は、６０〜９０度であり、
前記冷却工程での冷却時間は、３．０〜７．０秒である上記（７）に記載の医療用バッグの製造方法。 (8) The first resin material is a main material of polypropylene,
The cooling temperature in the cooling step is 60 to 90 degrees,
The method for producing a medical bag according to (7), wherein the cooling time in the cooling step is 3.0 to 7.0 seconds.

（９） 前記口部形成部材は、管状をなす管状部と、該管状部の外周部に互いに反対方向に向かって突出形成された突部とを有する上記（１）ないし（８）のいずれかに記載の医療用バッグの製造方法。   (9) Any of the above (1) to (8), wherein the mouth portion forming member includes a tubular portion having a tubular shape, and a protruding portion formed on the outer peripheral portion of the tubular portion so as to protrude in opposite directions. The manufacturing method of the medical bag as described in any one of.

（１０） 前記バッグ本体は、長尺状をなす２枚のシート材の縁部同士を接合してなるものであり、
前記シート材の幅方向の中央部に前記口部を形成する上記（１）ないし（９）のいずれかに記載の医療用バッグの製造方法。 (10) The bag body is formed by joining edges of two sheet materials having a long shape,
The method for manufacturing a medical bag according to any one of (1) to (9), wherein the mouth portion is formed at a center portion in a width direction of the sheet material.

（１１） 上記（１）ないし（１０）のいずれかに記載の医療用バッグの製造方法により製造されたことを特徴とする医療用バッグ。   (11) A medical bag manufactured by the method for manufacturing a medical bag according to any one of (1) to (10).

また、本発明の医療用バッグの製造方法では、前記第１の樹脂材料と前記第２の樹脂材料とは、互いに組成が同じまたは異なるものであるのが好ましい。   In the method for manufacturing a medical bag of the present invention, it is preferable that the first resin material and the second resin material have the same or different compositions.

また、本発明の医療用バッグの製造方法では、前記第１の樹脂材料と前記第２の樹脂材料とは、それぞれ、熱可塑性エラストマーであるのが好ましい。   In the method for producing a medical bag of the present invention, it is preferable that the first resin material and the second resin material are each a thermoplastic elastomer.

また、本発明の医療用バッグの製造方法では、前記第１の加熱工程での加熱時間は、前記第２の加熱工程での加熱時間と同じかまたはそれよりも長いのが好ましい。   Moreover, in the manufacturing method of the medical bag of this invention, it is preferable that the heating time in the said 1st heating process is the same as or longer than the heating time in the said 2nd heating process.

本発明によれば、バッグ本体と口部形成部材とを有する医療用バッグを製造する際に、第１の加熱工程でバッグ本体の口部は、溶融しない程度に口部形成部材の外形形状に沿うように確実に熱変形し、よって、形状付けられる。これにより、第２の加熱工程で口部に口部形成部材を融着する際に口部をその融点よりも高い温度まで加熱しても、当該口部は、急激に過剰に変形して、例えばピンホールが生じたり、その肉厚が極端に薄くなる部分が生じたりするのが防止され、よって、その融着が確実に行なわれる。このように融着されたバッグ本体と口部形成部材とは、液密に接合したものとなる。そして、バッグ本体と口部形成部材が液密に接合された医療用バッグを得ることができる。   According to the present invention, when manufacturing a medical bag having a bag main body and a mouth forming member, the mouth of the bag main body is shaped so as not to melt in the first heating step. It is surely heat deformed along and thus shaped. Thereby, even when the mouth part is heated to a temperature higher than the melting point when the mouth part forming member is fused to the mouth part in the second heating step, the mouth part rapidly deforms excessively, For example, it is possible to prevent a pinhole or a portion where the thickness is extremely thin from occurring, and the fusion can be reliably performed. The bag body and the mouth portion forming member thus fused are joined in a liquid-tight manner. And the medical bag by which the bag main body and the mouth part formation member were joined liquid-tightly can be obtained.

本発明の医療用バッグの製造方法における各工程を順に示す概略斜視図である。It is a schematic perspective view which shows each process in the manufacturing method of the medical bag of this invention in order. 本発明の医療用バッグの製造方法における各工程を順に示す概略斜視図である。It is a schematic perspective view which shows each process in the manufacturing method of the medical bag of this invention in order. 本発明の医療用バッグの製造方法における各工程を順に示す概略斜視図である。It is a schematic perspective view which shows each process in the manufacturing method of the medical bag of this invention in order. 本発明の医療用バッグの製造方法における各工程を順に示す概略斜視図である。It is a schematic perspective view which shows each process in the manufacturing method of the medical bag of this invention in order.

以下、本発明の医療用バッグの製造方法および医療用バッグを添付図面に示す好適な実施形態に基づいて詳細に説明する。   Hereinafter, the manufacturing method and medical bag of the medical bag of this invention are demonstrated in detail based on suitable embodiment shown to an accompanying drawing.

図１〜図４は、それぞれ、本発明の医療用バッグの製造方法における各工程を順に示す概略斜視図である。なお、以下では、説明の都合上、図１〜図４中の左側を「基端」、右側を「先端」、上側を「上」または「上方」、下側を「下」または「下方」と言う。   1 to 4 are schematic perspective views sequentially showing each step in the method for producing a medical bag of the present invention. In the following, for convenience of explanation, the left side in FIGS. 1 to 4 is “base end”, the right side is “tip”, the upper side is “up” or “upper”, and the lower side is “lower” or “lower”. Say.

図１〜図４に示す医療用バッグの製造方法により製造される医療用バッグ１は、バッグ本体２と口部形成部材３とを備え、バッグ本体２内に液体１１が充填されたものである。なお、医療用バッグ１としては、バッグ本体２の内部が複数の空間に画成された複室容器であってもよいし、１つの空間２２を有する単室容器であってもよい。本実施形態では、単室のものを一例に挙げて説明する。   A medical bag 1 manufactured by the method for manufacturing a medical bag shown in FIGS. 1 to 4 includes a bag body 2 and a mouth forming member 3, and the bag body 2 is filled with a liquid 11. . The medical bag 1 may be a multi-chamber container in which the interior of the bag body 2 is defined in a plurality of spaces, or a single-chamber container having one space 22. In the present embodiment, a single room will be described as an example.

図４に示すように、バッグ本体２は、平面視で大きさが同等のほぼ長方形（長尺状）をなすシート材２１ａ、２１ｂで構成され、シート材２１ａ、２１ｂの縁部２１１同士を接合して袋状に形成したものである。そして、シート材２１ａとシート材２１ｂとの間の空間２２に液体１１を収納することができる。なお、シート材２１ａ、２１ｂ同士の接合方法としては、特に限定されないが、例えば、融着（熱融着、高周波融着、超音波融着等）による方法、接着（接着剤や溶媒による接着）による方法等が挙げられる。   As shown in FIG. 4, the bag body 2 is configured by sheet materials 21 a and 21 b having substantially the same size (long shape) in plan view, and the edges 211 of the sheet materials 21 a and 21 b are joined to each other. And formed into a bag shape. The liquid 11 can be stored in the space 22 between the sheet material 21a and the sheet material 21b. The method for joining the sheet materials 21a and 21b is not particularly limited. For example, a method by fusion (thermal fusion, high frequency fusion, ultrasonic fusion, etc.), adhesion (adhesion with an adhesive or a solvent). And the like.

シート材２１ａ、２１ｂは、それぞれ、軟質のもの、すなわち、可撓性を有するものであり、第１の樹脂材料で構成されている。この構成材料については、後述する。   Each of the sheet materials 21a and 21b is soft, that is, has flexibility, and is made of a first resin material. This constituent material will be described later.

図２に示すように、バッグ本体２の先端側の縁部、すなわち、先端部には、シート材２１ａとシート材２１ｂとの接合が省略されて、開口した口部２３が設けられている。この口部２３は、口部形成部材３が装着される部分となる。   As shown in FIG. 2, the edge of the bag main body 2 on the front end side, that is, the front end is provided with an opening 23 in which the joining of the sheet material 21 a and the sheet material 21 b is omitted. The mouth portion 23 is a portion to which the mouth portion forming member 3 is attached.

また、口部２３の形成位置は、シート材２１ａやシート材２１ｂの幅方向の中央部とするのが好ましい。これにより、口部２３を形成する際、その形成位置を例えばシート材２１ａやシート材２１ｂの角部とする場合よりも、前記中央部とする方が、当該口部２３の形成が容易となる。また、口部２３に口部形成部材３を装着する際、口部形成部材３の口部２３への挿入操作が容易となる。また、内溶液（液体１１）を排出した際の医療用バッグ１内の残液が少なくなると言う利点もある。   Moreover, it is preferable that the formation position of the opening part 23 is a center part in the width direction of the sheet material 21a and the sheet material 21b. Thereby, when forming the mouth part 23, it is easier to form the mouth part 23 in the central part than when the formation position is the corner part of the sheet material 21a or the sheet material 21b, for example. . Further, when the mouth forming member 3 is attached to the mouth 23, the insertion operation of the mouth forming member 3 into the mouth 23 is facilitated. There is also an advantage that the residual liquid in the medical bag 1 when the internal solution (liquid 11) is discharged is reduced.

このような構成のバッグ本体２の空間２２に収納される液体１１としては、特に限定されないが、例えば、腹膜透析液、生理食塩水、電解質溶液、リンゲル液、高カロリー輸液、ブドウ糖液、注射用水、経口栄養剤等が挙げられる。   The liquid 11 stored in the space 22 of the bag body 2 having such a configuration is not particularly limited. For example, peritoneal dialysis solution, physiological saline, electrolyte solution, Ringer's solution, high calorie infusion solution, glucose solution, water for injection, Oral nutrients etc. are mentioned.

図１に示すように、口部形成部材３は、管状をなす管状部３１と、管状部３１の外周部に突出形成された突部３２とを有している。   As shown in FIG. 1, the mouth forming member 3 includes a tubular portion 31 that is tubular, and a protrusion 32 that is formed to protrude from the outer peripheral portion of the tubular portion 31.

管状部３１は、その管路３１２が液体１１が通過する流路として機能するものである。これにより、バッグ本体２から液体１１を外部へ排出することができたり、他の容器からの液体をバッグ本体２に混注することができる。管路３１２には、当該管路３１２を開閉する弁体（図示せず）が配置されているのが好ましい。   The tubular part 31 functions as a channel through which the liquid 11 passes. Thereby, the liquid 11 can be discharged | emitted from the bag main body 2 outside, and the liquid from another container can be mixedly injected into the bag main body 2. FIG. It is preferable that a valve body (not shown) for opening and closing the pipe line 312 is disposed in the pipe line 312.

なお、管状部３１の先端外周部には、図示の構成では外径が拡径した拡径部３１１が形成されているが、これに限定されず、例えば、拡径部３１１が省略されていてもよい。   In the configuration shown in the drawing, an enlarged diameter portion 311 having an enlarged outer diameter is formed on the outer peripheral portion of the tubular portion 31. However, the present invention is not limited to this, and for example, the enlarged diameter portion 311 is omitted. Also good.

また、管状部３１の基端外周部には、突部３２が形成されている。この突部３２は、互いに反対方向に向かって突出した一対の突片３２１で構成されている。また、突部３２は、その上面および下面がそれぞれ隆起するように湾曲しており、全体形状が舟形をなす。
そして、突部３２をバッグ本体２の口部２３に挿入すると、シート材２１ａシート材２１ｂとで突部３２を挟持することができ、その挟持状態で突部３２を口部２３に接合、固定することができる。このように突部３２は、口部２３に接合、固定される固定部として機能する。 In addition, a protrusion 32 is formed on the outer peripheral portion of the base end of the tubular portion 31. The protrusion 32 includes a pair of protrusions 321 that protrude in opposite directions. Further, the protrusion 32 is curved so that the upper surface and the lower surface thereof are raised, and the overall shape forms a boat shape.
When the protrusion 32 is inserted into the mouth portion 23 of the bag body 2, the protrusion 32 can be sandwiched between the sheet material 21a and the sheet material 21b, and the protrusion 32 is joined and fixed to the mouth portion 23 in the sandwiched state. can do. As described above, the protrusion 32 functions as a fixed portion that is joined and fixed to the mouth portion 23.

前述したように、シート材２１ａ、２１ｂは、それぞれ、軟質のものであり、第１の樹脂材料で構成されている。一方、口部形成部材３は、硬質のものであり、第２の樹脂材料で構成されている。また、第２の樹脂材料は、第１の樹脂材料よりも融点が高い。   As described above, the sheet materials 21a and 21b are each soft and are made of the first resin material. On the other hand, the mouth forming member 3 is hard and is made of a second resin material. The second resin material has a higher melting point than the first resin material.

第１の樹脂材料および第２の樹脂材料としては、それぞれ、その主材料として例えばポリプロピレン、ポリエチレン、ポリブタジエン、エチレン−酢酸ビニル共重合体のようなポリオレフィン、オレフィン系エラストマー、スチレン系エラストマー等の各種熱可塑性エラストマーあるいはこれらを任意に組み合わせたもの（ブレンド樹脂、ポリマーアロイ、積層体等）を含む材料が挙げられ、特に、ポリプロピレンを主材料として含むものが好ましい。このような樹脂材料は、例えば、高圧蒸気滅菌に耐えられる耐熱性、耐水性を有している点で好ましい。ここで、「主材料」とは、樹脂材料全体に示す割合が５０％以上の材料のことを言う。   As the first resin material and the second resin material, various main heat materials such as polypropylene, polyethylene, polybutadiene, polyolefin such as ethylene-vinyl acetate copolymer, olefin elastomer, styrene elastomer, etc. Examples thereof include materials including plastic elastomers or arbitrary combinations thereof (blend resins, polymer alloys, laminates, etc.), and those containing polypropylene as a main material are particularly preferable. Such a resin material is preferable in that it has heat resistance and water resistance that can withstand high-pressure steam sterilization, for example. Here, the “main material” refers to a material having a ratio of 50% or more to the entire resin material.

そして、医療用バッグ１では、シート材２１ａ、２１ｂの材質（構成材料のポリマー組成、分子量、可塑材等の添加剤）、シート材２１ａ、２１ｂの厚さ等の条件を適宜組合せて選択することにより、シート材２１ａ、２１ｂを軟質のものとすることができる。   In the medical bag 1, the material of the sheet materials 21a and 21b (polymer composition of constituent materials, molecular weight, additives such as a plastic material), and the conditions such as the thickness of the sheet materials 21a and 21b are appropriately selected and selected. Thus, the sheet materials 21a and 21b can be made soft.

これと同様に、口部形成部材３の材質（構成材料のポリマー組成、分子量、可塑材等の添加剤）、口部形成部材３の管状部３１の管壁の厚さ等の条件を適宜組合せて選択することにより、口部形成部材３を硬質のものとすることができる。   Similarly, conditions such as the material of the mouth forming member 3 (polymer composition of constituent material, molecular weight, additive such as plasticizer), the thickness of the tube wall of the tubular portion 31 of the mouth forming member 3 are appropriately combined. By selecting these, the mouth forming member 3 can be made hard.

また、液体１１の変質や劣化を有効に防止するために、シート材２１ａ、２１ｂは、ガス透過性ができる限り低いもの、すなわち、ガスバリア性を有するものが好ましい。   In order to effectively prevent deterioration and deterioration of the liquid 11, the sheet materials 21a and 21b are preferably as low as possible in gas permeability, that is, having gas barrier properties.

次に、医療用バッグの製造方法について、図１〜図４を参照しつつ説明する。この医療用バッグの製造方法は、バッグ本体２の口部２３に口部形成部材３を装着して医療用バッグ１を製造する方法であり、部材加熱工程と、第１の加熱工程（予備加熱工程）と、第２の加熱工程（本加熱工程）と、冷却工程と、液体充填工程とを有する。ここでは、バッグ本体２を構成する第１の樹脂材料と口部形成部材３を構成する第２の樹脂材料とがそれぞれ前述したポリプロピレンを主材料とするものとして説明する。   Next, a method for manufacturing a medical bag will be described with reference to FIGS. This medical bag manufacturing method is a method of manufacturing the medical bag 1 by attaching the mouth forming member 3 to the mouth 23 of the bag body 2, and includes a member heating step and a first heating step (preliminary heating). Step), a second heating step (main heating step), a cooling step, and a liquid filling step. Here, the first resin material constituting the bag main body 2 and the second resin material constituting the mouth portion forming member 3 will be described assuming that the above-described polypropylene is the main material.

なお、部材加熱工程では、金型４Ａが用いられ、第１の加熱工程では、金型４Ｂが用いられ、第２の加熱工程では、金型４Ｃが用いられる（図１〜図３参照）。各金型４Ａ〜４Ｃは、互いに対向して配置され、接近・離間可能な上側金型４１ａと下側金型４１ｂとを備えている。上側金型４１ａと下側金型４１ｂとは、互いに形状が同じであるため、以下、上側金型４１ａについて代表的に説明する。   In the member heating process, the mold 4A is used, in the first heating process, the mold 4B is used, and in the second heating process, the mold 4C is used (see FIGS. 1 to 3). Each of the molds 4A to 4C includes an upper mold 41a and a lower mold 41b that are arranged to face each other and can be approached and separated. Since the upper mold 41a and the lower mold 41b have the same shape, the upper mold 41a will be representatively described below.

上側金型４１ａは、四角柱状をなす部材で構成され、その長手方向が水平方向と平行となるように配置されている。上側金型４１ａの下側金型４１ｂに臨む面４２には、その長手方向の中央部に凹部４２１が形成されている。この凹部４２１の底面は、口部形成部材３の突部３２の前記隆起するように湾曲した上面に対応した、すなわち、前記上面とほぼ同様の湾曲形状をなす。   The upper mold 41a is formed of a quadrangular prism-shaped member, and is arranged so that its longitudinal direction is parallel to the horizontal direction. On the surface 42 facing the lower mold 41b of the upper mold 41a, a recess 421 is formed at the center in the longitudinal direction. The bottom surface of the concave portion 421 corresponds to the upper surface of the protruding portion 32 of the mouth forming member 3 that is curved so as to protrude, that is, has a curved shape substantially similar to the upper surface.

一方、下側金型４１ｂは、上側金型４１ａと同様のものを上下反転させて、上側金型４１ａの下方に配置されたものである。   On the other hand, the lower mold 41b is disposed below the upper mold 41a by inverting the same one as the upper mold 41a upside down.

そして、上側金型４１ａと下側金型４１ｂとが接近した型閉め状態で、上側金型４１ａの凹部４２１と下側金型４１ｂの凹部４２１との間に、キャビティ４３が画成される。   A cavity 43 is defined between the concave portion 421 of the upper die 41a and the concave portion 421 of the lower die 41b in a closed state where the upper die 41a and the lower die 41b are close to each other.

また、上側金型４１ａ、下側金型４１ｂには、それぞれ、例えば電熱線で構成されたヒータ４４が内蔵されている。これにより、各金型４Ａ〜４Ｃがそれぞれ型閉め状態で加熱可能となる。   Each of the upper mold 41a and the lower mold 41b has a built-in heater 44 made of, for example, a heating wire. Thereby, each metal mold | die 4A-4C can be heated in a mold-closed state, respectively.

［１］ 部材加熱工程
図１に示すように、金型４Ａを上側金型４１ａと下側金型４１ｂとが離間した型開き状態とし、上側金型４１ａと下側金型４１ｂとの間に口部形成部材３の突部３２を配置する。次いで、金型４Ａを型閉め状態とする。これにより、上側金型４１ａと下側金型４１ｂとの間に突部３２が挟まれる、すなわち、キャビティ４３内に突部３２が配置される。 [1] Member Heating Step As shown in FIG. 1, the mold 4A is placed in an open state in which the upper mold 41a and the lower mold 41b are separated from each other, and between the upper mold 41a and the lower mold 41b. The protrusion 32 of the mouth forming member 3 is disposed. Next, the mold 4A is brought into a closed state. Thus, the protrusion 32 is sandwiched between the upper mold 41 a and the lower mold 41 b, that is, the protrusion 32 is disposed in the cavity 43.

そして、この状態のままヒータ４４を作動させて、口部形成部材３をその構成材料である第２の樹脂材料の融点よりも高い温度まで加熱する。その加熱温度としては、特に限定されないが、例えば、好ましくは１９０〜２３０度であり、より好ましくは２００〜２２０度である。   Then, the heater 44 is operated in this state to heat the mouth forming member 3 to a temperature higher than the melting point of the second resin material that is the constituent material. Although it does not specifically limit as the heating temperature, For example, Preferably it is 190-230 degree | times, More preferably, it is 200-220 degree | times.

また、加熱時間は、加熱温度にもよるが、当該加熱温度が前記数値範囲である場合には、例えば、好ましくは２．０〜６．０秒であり、より好ましくは３．０〜５．０秒である。   Moreover, although heating time is based also on heating temperature, when the said heating temperature is the said numerical range, it becomes like this. Preferably it is 2.0 to 6.0 second, More preferably, it is 3.0 to 5. 0 seconds.

このような加熱により、口部形成部材３は、特に突部３２が若干溶融する程度に十分に加熱される。   By such heating, the mouth forming member 3 is sufficiently heated, in particular, such that the protrusion 32 is slightly melted.

［２］ 第１の加熱工程
次に、金型４Ａを型開き状態として、口部形成部材３を離型する。その後迅速に、すなわち、前記十分に加熱された口部形成部材３が冷めないうちに、図２に示すように、当該口部形成部材３をバッグ本体２の口部２３に挿入する。そして、予め型開き状態としていた金型４Ｂに、口部形成部材３が挿入されたバッグ本体２を載置する。その後、金型４Ｂを型閉め状態とする。これにより、口部形成部材３がバッグ本体２ごと金型４Ｂに挟まれる（図２参照）。また、このとき、口部形成部材３の突部３２の上面にシート材２１ａの口部２３を構成する部分が下方に押圧されて、口部形成部材３の熱で熱変形しつつ貼り付く。これと同様に、突部３２の下面にシート材２１ｂの口部２３を構成する部分も上方に押圧されて口部形成部材３の熱で熱変形し、擬似融着される。 [2] First Heating Step Next, the mouth forming member 3 is released with the mold 4A in an open state. Thereafter, promptly, that is, before the sufficiently heated mouth forming member 3 is not cooled, the mouth forming member 3 is inserted into the mouth 23 of the bag body 2 as shown in FIG. And the bag main body 2 in which the opening | mouth part formation member 3 was inserted is mounted in the metal mold | die 4B previously made into the mold open state. Thereafter, the mold 4B is brought into a closed state. Thus, the mouth forming member 3 is sandwiched between the bag body 2 and the mold 4B (see FIG. 2). Further, at this time, a portion constituting the mouth portion 23 of the sheet material 21 a is pressed downward on the upper surface of the protrusion 32 of the mouth portion forming member 3, and sticks while being thermally deformed by the heat of the mouth portion forming member 3. Similarly, the portion constituting the mouth portion 23 of the sheet material 21b is also pressed upward on the lower surface of the protrusion 32, thermally deformed by the heat of the mouth portion forming member 3, and pseudo-fused.

なお、本工程で用意されるバッグ本体２は、その基端部が未だ融着されていない開口部２４が形成されたものとなっている。開口部２４は、液体充填工程で液体１１を充填するときに用いられる。   In addition, the bag main body 2 prepared in this step has an opening 24 whose base end portion is not yet fused. The opening 24 is used when the liquid 11 is filled in the liquid filling process.

次に、この状態のままヒータ４４を作動させて、口部２３をその構成材料である第１の樹脂材料の融点よりも低い温度まで加熱する。その加熱温度としては、特に限定されないが、例えば、好ましくは６０〜１００度であり、より好ましくは７０〜９０度である。この加熱温度は、次工程である第２の加熱工程での加熱温度よりも低いのが好ましい。   Next, the heater 44 is operated in this state, and the mouth portion 23 is heated to a temperature lower than the melting point of the first resin material as the constituent material. Although it does not specifically limit as the heating temperature, For example, Preferably it is 60-100 degree | times, More preferably, it is 70-90 degree | times. This heating temperature is preferably lower than the heating temperature in the second heating step which is the next step.

また、加熱時間は、本工程での加熱温度にもよるが、当該加熱温度が前記数値範囲である場合には、例えば、好ましくは３．０〜７．０秒であり、より好ましくは４．０〜６．０秒である。この加熱時間は、各工程の金型が同じ場合には、第２の加熱工程での加熱時間と同じとなるのが好ましく、各工程の金型が異なる場合には、第２の加熱工程での加熱時間と同じかまたはそれよりも長いのが好ましい。   Moreover, although heating time is based also on the heating temperature in this process, when the said heating temperature is the said numerical range, it becomes like this. Preferably it is 3.0-7.0 seconds, More preferably, it is 4. 0 to 6.0 seconds. This heating time is preferably the same as the heating time in the second heating step when the molds in each step are the same, and in the second heating step when the molds in each step are different. The heating time is preferably the same as or longer than the heating time.

このような加熱と、前述したシート材２１ａ、２１ｂがそれぞれ口部形成部材３の突部３２に貼り付くこととの相乗効果により、口部２３が口部形成部材３の突部３２の外形形状に沿うように確実に変形する。これにより、口部２３に形状付けを行なうことができる。なお、この形状付けが行なわれている際には、本工程での加熱が第１の樹脂材料の融点よりも低い温度までの加熱であるため、当然、口部２３に口部形成部材３が融着するまでには至っていない。   Due to the synergistic effect of such heating and the above-described sheet materials 21 a and 21 b sticking to the protrusion 32 of the mouth forming member 3, the outer shape of the protrusion 23 of the mouth forming member 3 is the mouth 23. It will definitely deform to follow. Thereby, the mouth part 23 can be shaped. When this shaping is performed, the heating in this step is heating to a temperature lower than the melting point of the first resin material, so that the mouth forming member 3 is naturally provided in the mouth 23. It has not yet been fused.

そして、口部２３に形状付けが施されることにより、第２の加熱工程で口部２３に口部形成部材３を融着する際に、口部２３をその融点よりも高い温度まで加熱しても、当該口部２３が急激に過剰に変形するのが確実に防止され、よって、その融着が確実に行なわれる。   Then, by shaping the mouth portion 23, when the mouth portion forming member 3 is fused to the mouth portion 23 in the second heating step, the mouth portion 23 is heated to a temperature higher than its melting point. Even so, it is possible to reliably prevent the mouth portion 23 from being rapidly and excessively deformed, so that the fusion is reliably performed.

［３］ 第２の加熱工程
次に、金型４Ｂを再度型開き状態として、口部形成部材３が擬似融着されたバッグ本体２を離型する。 [3] Second Heating Step Next, the mold body 4B is opened again, and the bag body 2 on which the mouth forming member 3 is pseudo-fused is released.

次に、予め型開き状態としていた金型４Ｃに、口部形成部材３が擬似融着されたバッグ本体２を載置する。その後、図３に示すように、金型４Ｃを型閉め状態とする。そして、口部形成部材３をバッグ本体２ごと金型４Ｃに挟んだ状態で、ヒータ４４を作動させて、口部２３を第１の樹脂材料の融点よりも高い温度で加熱する。   Next, the bag body 2 in which the mouth forming member 3 is pseudo-fused is placed on the mold 4C that has been previously opened. Thereafter, as shown in FIG. 3, the mold 4C is brought into a closed state. Then, in a state where the mouth portion forming member 3 is sandwiched between the bag body 2 and the mold 4C, the heater 44 is operated to heat the mouth portion 23 at a temperature higher than the melting point of the first resin material.

本工程での加熱温度としては、特に限定されないが、例えば、好ましくは１５０〜１９０度であり、より好ましくは１６０〜１８０度である。   Although it does not specifically limit as heating temperature in this process, For example, Preferably it is 150-190 degree | times, More preferably, it is 160-180 degree | times.

また、加熱時間は、本工程での加熱温度にもよるが、当該加熱温度が前記数値範囲である場合には、例えば、好ましくは３．０〜７．０秒であり、より好ましくは４．０〜６．０秒である。   Moreover, although heating time is based also on the heating temperature in this process, when the said heating temperature is the said numerical range, it becomes like this. Preferably it is 3.0-7.0 seconds, More preferably, it is 4. 0 to 6.0 seconds.

このような加熱により、口部２３は、例えばピンホールが生じたり、その肉厚が極端に薄くなる部分が生じたりするのが防止される程度に溶融することとなる。これにより、口部２３に口部形成部材３を確実に融着することができ、よって、口部２３と口部形成部材３とを確実に液密に接合することができる。   By such heating, the mouth portion 23 is melted to such an extent that, for example, a pinhole is generated or a portion where the thickness is extremely thin is prevented. Thereby, the mouth part forming member 3 can be reliably fused to the mouth part 23, so that the mouth part 23 and the mouth part forming member 3 can be reliably joined in a liquid-tight manner.

［４］ 冷却工程
次に、図４に示すように、金型４Ｃを型開き状態として、口部形成部材３が接合されたバッグ本体２を離型する。その後、バッグ本体２の口部２３を第１の樹脂材料の融点よりも低い温度まで冷却する。その冷却温度としては、特に限定されないが、例えば、好ましくは６０〜９０度であり、より好ましくは７０〜８０度である。 [4] Cooling Step Next, as shown in FIG. 4, the mold body 4 </ b> C is opened, and the bag body 2 to which the mouth forming member 3 is joined is released. Thereafter, the mouth portion 23 of the bag body 2 is cooled to a temperature lower than the melting point of the first resin material. Although it does not specifically limit as the cooling temperature, For example, Preferably it is 60-90 degree | times, More preferably, it is 70-80 degree | times.

また、冷却時間は、冷却温度にもよるが、当該冷却温度が前記数値範囲である場合には、例えば、好ましくは３．０〜７．０秒であり、より好ましくは４．０〜６．０秒である。   In addition, although the cooling time depends on the cooling temperature, when the cooling temperature is in the numerical range, for example, it is preferably 3.0 to 7.0 seconds, and more preferably 4.0 to 6. 0 seconds.

このような冷却により、溶融状態の口部２３が強制的に固化され、迅速に次工程へ移行することができる。   By such cooling, the melted mouth portion 23 is forcibly solidified, so that the next process can be quickly performed.

なお、本工程での冷却は、冷却用の装置を用いて行なってもよいし、自然冷却で行なってもよい。「冷却用の装置」としては、特に限定されないが、例えば、冷風を送風する送風機が挙げられる。   The cooling in this step may be performed using a cooling device or may be performed by natural cooling. The “cooling device” is not particularly limited, and examples thereof include a blower that blows cold air.

［５］ 液体充填工程
次に、バッグ本体２の開口部２４からノズル（図示せず）を用いて液体１１を充填する。その後、開口部２４を例えば融着（熱融着、高周波融着、超音波融着等）により封止する。これにより、液体１１が充填された医療用バッグ１が得られる（図４参照）。そして、この医療用バッグ１は、前述したように、口部２３と口部形成部材３とが確実に液密に接合されたものとなっている。 [5] Liquid Filling Step Next, the liquid 11 is filled from the opening 24 of the bag body 2 using a nozzle (not shown). Thereafter, the opening 24 is sealed by, for example, fusion (thermal fusion, high frequency fusion, ultrasonic fusion, etc.). Thereby, the medical bag 1 filled with the liquid 11 is obtained (see FIG. 4). And as this medical bag 1 was mentioned above, the opening part 23 and the opening part formation member 3 are reliably liquid-tightly joined.

なお、液体１１は、開口部２４から充填されるのに限定されず、例えば、口部形成部材３から充填されてもよい。   The liquid 11 is not limited to being filled from the opening 24, and may be filled from the mouth forming member 3, for example.

以上、本発明の医療用バッグの製造方法および医療用バッグを図示の実施形態について説明したが、本発明は、これに限定されるものではなく、医療用バッグを構成する各部は、同様の機能を発揮し得る任意の構成のものと置換することができる。また、任意の構成物が付加されていてもよい。   As mentioned above, although the manufacturing method of the medical bag of this invention and the medical bag were demonstrated about embodiment of illustration, this invention is not limited to this, Each part which comprises a medical bag has the same function. Can be substituted with any structure capable of exhibiting Moreover, arbitrary components may be added.

また、部材加熱工程、第１の加熱工程、第２の加熱工程での加熱は、別々の金型を用いて行なわれているが、これに限定されず、例えば、１つの金型を用いて行なわれてもよい。   Further, the heating in the member heating step, the first heating step, and the second heating step is performed using separate molds, but is not limited to this. For example, using one mold It may be done.

また、部材加熱工程、第１の加熱工程、第２の加熱工程での加熱は、金型を用いて行なわれているが、これに限定されず、例えば、熱風を当てるドライヤ、ハロゲンランプを用いて行なわれてもよい。   The heating in the member heating step, the first heating step, and the second heating step is performed using a mold, but is not limited to this. For example, a dryer that applies hot air or a halogen lamp is used. May be performed.

１ 医療用バッグ
２ バッグ本体
２１ａ、２１ｂ シート材
２１１ 縁部
２２ 空間
２３ 口部
２４ 開口部
３ 口部形成部材
３１ 管状部
３１１ 拡径部
３１２ 管路
３２ 突部
３２１ 突片
４Ａ、４Ｂ、４Ｃ 金型
４１ａ 上側金型
４１ｂ 下側金型
４２ 面
４２１ 凹部
４３ キャビティ
４４ ヒータ
１１ 液体 DESCRIPTION OF SYMBOLS 1 Medical bag 2 Bag main body 21a, 21b Sheet material 211 Edge part 22 Space 23 Mouth part 24 Open part 3 Mouth formation member 31 Tubular part 311 Expanded part 312 Pipe line 32 Projection part 321 Projection piece 4A, 4B, 4C Gold Mold 41a Upper mold 41b Lower mold 42 Surface 421 Recess 43 Cavity 44 Heater 11 Liquid

Claims (11)

液体を収納可能な袋状をなす、第１の樹脂材料で構成された軟質のバッグ本体の縁部に開口して設けられた口部に、前記液体が通過する、第２の樹脂材料で構成された硬質の口部形成部材を装着して医療用バッグを製造する方法であって、
前記バッグ本体の前記口部に前記口部形成部材を挿入し、その状態で前記口部を前記第１の樹脂材料の融点よりも低い温度まで加熱して、前記口部が前記口部形成部材の外形形状に沿うように前記口部に形状付けを行なう第１の加熱工程と、
前記口部に前記口部形成部材が挿入された前記バッグ本体の、前記口部を前記第１の樹脂材料の融点よりも高い温度で加熱して、前記口部に前記口部形成部材を融着する第２の加熱工程とを有することを特徴とする医療用バッグの製造方法。 Consists of a second resin material that allows the liquid to pass through an opening provided at the edge of a soft bag body made of a first resin material that has a bag shape capable of storing liquid. A method of manufacturing a medical bag by attaching a hard mouth forming member,
The mouth forming member is inserted into the mouth of the bag body, and the mouth is heated to a temperature lower than the melting point of the first resin material in that state, so that the mouth is the mouth forming member. A first heating step for shaping the mouth so as to conform to the outer shape of
The bag body of which the mouth part forming member is inserted into the mouth part is heated at a temperature higher than the melting point of the first resin material to melt the mouth part forming member into the mouth part. And a second heating step for wearing. A method for producing a medical bag. 前記第１の加熱工程での加熱温度は、前記第２の加熱工程での加熱温度よりも低い請求項１に記載の医療用バッグの製造方法。   The method for manufacturing a medical bag according to claim 1, wherein a heating temperature in the first heating step is lower than a heating temperature in the second heating step. 前記第１の樹脂材料と前記第２の樹脂材料とは、それぞれ、その主材料がポリプロピレンのものであり、
前記第１の加熱工程での加熱温度は、６０〜１００度であり、前記第２の加熱工程での加熱温度は、１５０〜１９０度であり、
前記第１の加熱工程での加熱時間および前記第２の加熱工程での加熱時間は、それぞれ、３．０〜７．０秒である請求項１または２に記載の医療用バッグの製造方法。 Each of the first resin material and the second resin material is a main material of polypropylene,
The heating temperature in the first heating step is 60 to 100 degrees, the heating temperature in the second heating step is 150 to 190 degrees,
The method for manufacturing a medical bag according to claim 1 or 2, wherein the heating time in the first heating step and the heating time in the second heating step are 3.0 to 7.0 seconds, respectively. 前記第１の加熱工程および前記第２の加熱工程での加熱を、それぞれ、金型を用いて行なう請求項１ないし３のいずれかに記載の医療用バッグの製造方法。   The method for manufacturing a medical bag according to any one of claims 1 to 3, wherein heating in the first heating step and the second heating step is performed using a mold. 前記第１の加熱工程に先立って、前記口部形成部材を前記第２の樹脂材料の融点よりも高い温度まで加熱する部材加熱工程を有する請求項１ないし４のいずれかに記載の医療用バッグの製造方法。   The medical bag according to any one of claims 1 to 4, further comprising a member heating step of heating the mouth forming member to a temperature higher than a melting point of the second resin material prior to the first heating step. Manufacturing method. 前記第２の樹脂材料は、その主材料がポリプロピレンのものであり、
前記部材加熱工程での加熱温度は、１９０〜２３０度であり、
前記部材加熱工程での加熱時間は、２．０〜６．０秒である請求項５に記載の医療用バッグの製造方法。 The second resin material is mainly made of polypropylene,
The heating temperature in the member heating step is 190 to 230 degrees,
The method for manufacturing a medical bag according to claim 5, wherein a heating time in the member heating step is 2.0 to 6.0 seconds. 前記第２の加熱工程の後に、前記口部を前記第１の樹脂材料の融点よりも低い温度まで冷却する冷却工程を有する請求項１ないし６のいずれかに記載の医療用バッグの製造方法。   The method for manufacturing a medical bag according to any one of claims 1 to 6, further comprising a cooling step of cooling the mouth portion to a temperature lower than a melting point of the first resin material after the second heating step. 前記第１の樹脂材料は、その主材料がポリプロピレンのものであり、
前記冷却工程での冷却温度は、６０〜９０度であり、
前記冷却工程での冷却時間は、３．０〜７．０秒である請求項７に記載の医療用バッグの製造方法。 The first resin material is a main material of polypropylene,
The cooling temperature in the cooling step is 60 to 90 degrees,
The method for manufacturing a medical bag according to claim 7, wherein a cooling time in the cooling step is 3.0 to 7.0 seconds. 前記口部形成部材は、管状をなす管状部と、該管状部の外周部に互いに反対方向に向かって突出形成された突部とを有する請求項１ないし８のいずれかに記載の医療用バッグの製造方法。   The medical bag according to any one of claims 1 to 8, wherein the mouth portion forming member includes a tubular portion having a tubular shape and a protruding portion formed on the outer peripheral portion of the tubular portion so as to protrude in opposite directions. Manufacturing method. 前記バッグ本体は、長尺状をなす２枚のシート材の縁部同士を接合してなるものであり、
前記シート材の幅方向の中央部に前記口部を形成する請求項１ないし９のいずれかに記載の医療用バッグの製造方法。 The bag body is formed by joining the edges of two long sheet materials.
The method for manufacturing a medical bag according to any one of claims 1 to 9, wherein the mouth portion is formed at a center portion in a width direction of the sheet material. 請求項１ないし１０のいずれかに記載の医療用バッグの製造方法により製造されたことを特徴とする医療用バッグ。   A medical bag manufactured by the method for manufacturing a medical bag according to any one of claims 1 to 10.
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