CN107260538A - The manufacture method of fluid bag and fluid bag - Google Patents
The manufacture method of fluid bag and fluid bag Download PDFInfo
- Publication number
- CN107260538A CN107260538A CN201710191705.XA CN201710191705A CN107260538A CN 107260538 A CN107260538 A CN 107260538A CN 201710191705 A CN201710191705 A CN 201710191705A CN 107260538 A CN107260538 A CN 107260538A
- Authority
- CN
- China
- Prior art keywords
- fluid bag
- weld portion
- sheet material
- cumulative
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 82
- 230000001186 cumulative effect Effects 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000003466 welding Methods 0.000 claims abstract description 44
- 229920000098 polyolefin Polymers 0.000 claims description 5
- -1 polyethylene Polymers 0.000 description 15
- 238000012360 testing method Methods 0.000 description 15
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000000385 dialysis solution Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000008103 glucose Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 235000015872 dietary supplement Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000008215 water for injection Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 239000004425 Makrolon Substances 0.000 description 1
- 229920008285 Poly(ether ketone) PEK Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- LEDRCCVNHBPBAG-UHFFFAOYSA-N benzene;prop-2-enenitrile Chemical compound C=CC#N.C1=CC=CC=C1 LEDRCCVNHBPBAG-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 238000010253 intravenous injection Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000012669 liquid formulation Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940005581 sodium lactate Drugs 0.000 description 1
- 235000011088 sodium lactate Nutrition 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 235000021476 total parenteral nutrition Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
- A61J1/10—Bag-type containers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1475—Inlet or outlet ports
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/851—Bag or container making machines
- B29C66/8511—Bag making machines
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hematology (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Package Specialized In Special Use (AREA)
- Making Paper Articles (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The present invention provides the manufacture method of fluid bag and fluid bag, and stored liquid can be prevented to External leakage.Fluid bag (1) possesses a bag main body (11), bag main body (11) be that thermal welding is formed each other by soft sheet material (10), and the inner side of its weld portion (2) have can store the incorporating section (111) of liquid (100).Other weld portion (2), which has, is arranged at the thickness of weld portion (2) and the boundary portion and sheet material (10) of the incorporating section (111) towards the inner side of bag main body (11) and cumulative cumulative portion (221).
Description
Technical field
The present invention relates to the manufacture method of fluid bag and fluid bag.
Background technology
It is known to store such as physiological saline, electrolyte solution, ringer's solution, total parenteral nutrition (intravenous
Hyperalimentation), the liquid of the liquid such as glucose solution, water for injection, peritoneal dialysis solution, oral nutritional supplements
Bag (for example, with reference to patent document 1).
Fluid bag described in patent document 1 is used for replenisher, the infusion for intravenous injection of artificial kidney to store
The fluid bag of the liquid such as liquid formulation, liquid nutritional liquid, and be by the sheet forming being made up of resin material be bag-shaped liquid
Bag.Fluid bag as described above is tubular for example by sheet forming, and its two ends is engaged by thermal welding, so as to be formed.
That is, it is formed with weld portion at the both ends of fluid bag.
In addition, above-mentioned thermal welding by by sheet material between upper side mold and lower die it is overlapping, by the overlapping part
Pressurization heats to carry out simultaneously between upper side mold and the flat pressurized plane of lower die.
However, on through weld portion formed by method as described above, should in the case of external force is applied to fluid bag
Power concentrates on the boundary portion of weld portion and the non-weld portion without welding.According to the degree of concentration, exist weld portion at one stroke peel off,
The possibility that sheet material occurs rupture and is broken.As a result, there is liquid in fluid bag to External leakage.
Prior art literature
Patent document
Patent document 1：2007-125206 publications
The content of the invention
Problems to be solved by the invention
It is an object of the present invention to provide a kind of can prevent fluid bag and liquid of the stored liquid to External leakage
The manufacture method of bag.
The means used to solve the problem
Purpose as described above is realized by the present invention of following (1)~(11).
(1) a kind of fluid bag, possesses a bag main body, and the bag main body is that thermal welding is formed each other by soft sheet material, and at it
The inner side of weld portion, which has, can store the incorporating section of liquid, and the fluid bag is characterised by, the weld portion, which has, to be set
In the weld portion and boundary portion the and described sheet material of the incorporating section thickness towards the inner side of the bag main body and it is cumulative
Cumulative portion.
(2) fluid bag according to above-mentioned (1), wherein, the weld portion has the first weld portion and the second weld portion,
Second weld portion, which is arranged at, more leans on the inner side than first weld portion and stronger than the welding of first weld portion
Degree is low, and the cumulative portion is arranged at second weld portion.
(3) fluid bag according to above-mentioned (1) or (2), wherein, at the cumulative portion, the welding of the sheet material is strong
Spend towards the inner side of the bag main body decrescence.
(4) fluid bag according to any one of above-mentioned (1) to (3), wherein, when by the maximum gauge in the cumulative portion
And the difference of minimum thickness is set to a, the length of the scope in inner side to the outside from the bag main body in the cumulative portion is set to b
When, the ratio between the two is the relation that a/b meets more than 0.05 and less than 0.25.
(5) fluid bag according to any one of above-mentioned (1) to (4), wherein, the cumulative rate of the thickness in the cumulative portion
It is constant.
(6) fluid bag according to any one of above-mentioned (1) to (5), wherein, the thickness of the sheet material for 0.2mm with
Upper and below 0.8mm.
(7) fluid bag according to any one of above-mentioned (1) to (6), wherein, the sheet material contains polyolefin as master
Material.
(8) fluid bag according to any one of above-mentioned (1) to (7), wherein, the bag main body is that global shape turns into
The bag main body of flat pattern, and the width that the width with the incorporating section becomes narrow gradually from inner side to the outside of the bag main body
Diminution portion, the cumulative portion is arranged at the part in face of the reduced width portion.
(9) a kind of manufacture method of fluid bag, it has the manufacture method of the fluid bag of following bags of main bodys for manufacture, described
Bag main body is made up of soft sheet material and turns into bag-shaped, and the manufacture method of the fluid bag is characterised by having：Thermal welding work
Sequence, by the sheet material, thermal welding can store liquid so as to form weld portion, and be formed in the inner side of the weld portion each other
Incorporating section, in the thermal welding process, forms be arranged at the weld portion and the incorporating section boundary portion and described
The thickness of material is towards the inner side of the bag main body and cumulative cumulative portion.
(10) manufacture method of the fluid bag according to above-mentioned (9), wherein, in the thermal welding process, use tool
There are the first mould and the second mould of the pressurized plane that the sheet material is clamped toward each other and heated in this clamped condition,
On the pressurized plane of a mould among first mould and second mould, formed to away from another mould
The inclined inclined plane in direction, pass through the inclined plane, form the cumulative portion.
(11) manufacture method of the fluid bag according to above-mentioned (9) or (10), wherein, it is molten in the thermal welding process
Jointing temp be more than 180 DEG C and less than 240 DEG C, heated in the thermal welding process sheet material time be more than 2 seconds and
Less than 30 seconds.
Invention effect
According to the present invention, when forming cumulative portion at weld portion, the heat seal strength in cumulative portion is than the cumulative portion in weld portion
The heat seal strength of part in addition is weak.Therefore, in weld portion, the part of incorporating section side turns into the low weak weld portion of heat seal strength,
Weak weld portion with the part of incorporating section opposite side turns into the high strong weld portion of heat seal strength.
In the case that external force applies to bag main body as compressing incorporating section, stress concentration is in incorporating section and weld portion
Boundary portion, but in this case, in the present invention, by the stripping of weak weld portion, so as to relax above-mentioned stress concentration.That is,
In the present invention, by forcing weak weld portion to peel off, so that above-mentioned stress concentration is relaxed, thus, it is possible to prevent to peel off to strong
The situation that weld portion, sheet material are broken.As a result, it is possible to prevent weld portion to be integrally broken, the liquid of incorporating section can be prevented
Body is to External leakage.
Brief description of the drawings
Fig. 1：Fig. 1 is the front view of the fluid bag of the present invention.
Fig. 2：Fig. 2 is the line A-A sectional view in Fig. 1, and (a) is the figure for showing nature, and (b) is to show weak weld portion stripping
The figure of state from after.
Fig. 3：Fig. 3 is the sectional view for illustrating the manufacture method of the fluid bag of the present invention, and (a) is to show arrangement step
Figure, (b) is the figure for showing thermal welding process.
Fig. 4：Fig. 4 is the side view for showing the test film for carrying out tension test in embodiment.
Fig. 5：Fig. 5 is the sectional view for the fluid bag for showing the progress shatter test in embodiment.
Fig. 6：Fig. 6 is the sectional view for the weld portion for showing conventional fluid bag, and (a) is the figure for showing nature, and (b) is
The figure of the post-rift state of weld portion is shown.
Description of reference numerals
1 fluid bag
1 ' fluid bag
10 sheet materials
11 bags of main bodys
111 incorporating sections
111 ' incorporating sections
112 reduced width portions
113 incorporating sections
114 incorporating sections
12 oral areas
121 cylindrical portions
122 fixed parts
13 oral areas
131 tubes
132 fixed parts
14 pipes
15 lids
2 weld portions
2 ' weld portions
The last 21 weld portion
22 weak weld portions
221 cumulative portions
23 lattices
3 hot melting and connecting devices
31 first moulds
310 pressurized planes
311 tabular surfaces
312 inclined planes
32 second moulds
320 pressurized planes
321 tabular surfaces
100 liquid
101 liquid
200 casings
201 lattices
G gaps
P pressure
S accommodation spaces
W width
θ angles of inclination
Embodiment
Hereinafter, the fluid bag and fluid bag of the present invention is described in detail based on appended preferred embodiment shown in the drawings
Manufacture method.
＜ embodiments ＞
Fig. 1 is the front view of the fluid bag of the present invention.Fig. 2 is the line A-A sectional view in Fig. 1, and (a) is to show nature
Figure, (b) be show weak weld portion peel off after state figure.Fig. 3 is the manufacture method for illustrating the fluid bag of the present invention
Sectional view, (a) is to show the figure of arrangement step, and (b) is the figure for showing thermal welding process.Fig. 4 is to show entering in embodiment
Go tension test test film side view.Fig. 5 shows the sectional view of the fluid bag of the progress shatter test in embodiment.Figure
6 be the sectional view for the weld portion for showing conventional fluid bag, and (a) is the figure for showing nature, and (b) is to show that weld portion is broken
The figure of state afterwards.
It should be noted that following, for convenience of description, Fig. 1~Fig. 6 upside is referred to as " on " or " top ", will under
Side be referred to as " under " or " lower section ".
As shown in figure 1, fluid bag 1 has：By soft sheet material, thermal welding is formed each other, and is had in the inner side of its weld portion 2
There is the bag-shaped bag main body 11 for the incorporating section 111 (accommodation space) that can store liquid and be arranged at the oral area 12 of bag main body 11
And oral area 13.It should be noted that as an example, fluid bag 1 is the fluid bag for storing peritoneal dialysis solution.
Hereinafter, illustrated for each portion.Bag main body 11 can be for example, by the sheet material formed by soft material 10 be molded
Obtained for tubular, the method for edge welding by the method for its both ends welding or by 2 sheets 10 etc..For fluid bag 1
For, bag main body 11 is formed using following methods, and the sheet material 10 formed by soft material is shaped into tubular, at its both ends,
The part holt melt that sheet material 10 is coincided with one another connects.Therefore, for bag main body 11, band is formd in the edge of upper end and lower end
The weld portion 2 (heat-fused portion) of shape.
In addition, bag main body 11 turns into flat pattern, in vertical view, as substantially rectangular.In addition, at the two ends of bag main body 11
Portion, receive be formed with the width W (not storing the Breadth Maximum in the state of liquid) of incorporating section 111 with to two ends it is lateral before and by
The gradually reduced width portion 112 of reduced width.In the corner of bag main body 11, weld portion 2 turns into be bent along reduced width portion 112
Shape.
In addition, incorporating section 111 by sheet material 10 it is fused with one another formed by banding lattice 23 and separate.Thus, receive
111 points of portion is received to be in the incorporating section 113 and incorporating section 114 of non-interconnected state each other.In addition, with strong weld portion described hereinafter
21 compare, and the heat seal strength of lattice 23 is low, are broken by applying pressure to bag main body 11, so that the energy of incorporating section 113
It is enough to be connected with incorporating section 114.
Incorporating section 113 and incorporating section 114 are arranged from the downside in Fig. 1.In addition, the volume of incorporating section 113 is more than
The volume of incorporating section 114.As the liquid 100 for being accommodated in incorporating section 113, the liquid for principal component with glucose etc. can be used
Body.In addition, as the liquid 101 of incorporating section 114 is accommodated in, for example, can use with sodium chloride and sodium lactate etc. as principal component
Liquid.As it was noted above, by the way that incorporating section 113 is connected with incorporating section 114, liquid 100 can be mixed with liquid 101.
As the thickness of sheet material 10, it is not particularly limited, preferably more than 0.2mm and below 0.8mm, more preferably
More than 0.3mm and below 0.7mm.If sheet material 10 is blocked up, comparatively, when the welding carried out using thermal welding needs to expend
Between.On the other hand, if sheet material 10 is excessively thin, the intensity of weld portion 2 formed by thermal welding is utilized in the presence of being difficult to substantially ensure that
Possibility.
As the constituent material of bag main body 11, it is not particularly limited, the soft conjunction of the heat resistance with appropriateness can be used
Resin.As above-mentioned soft synthetic resin, it can enumerate for example, polyolefin (such as, polyethylene, polypropylene, polybutadiene, second
Mixture of alkene-propylene copolymer, polypropylene and polyethylene or polybutene etc., the mixture comprising polyolefin), and they
Partial cross-linked thing, vinyl-vinyl acetate copolymer (EVA), polyester (polyethylene terephthalate, poly terephthalic acid
Butanediol ester etc.), flexible vinyl chloride resin, polyvinyl acetate, polyvinylidene chloride, organosilicon, polyurethane, polyamide elastane
The various thermoplastics such as body, polyester elastomer, styrene series elastomer as styrene ethylene butylene styrene copolymer
Property elastomer, or material (blending resin, polymer alloy, layered product etc.) obtained from they are combined etc..
Oral area 12 is made up of cylindric part, and is fixed on the edge of bag main body 11.In addition, on oral area 12, one end
Portion is towards in bag main body 11, and the other end is located at the outside of bag main body 11.Thereby, it is possible to by the inside and outside connection of bag main body 11.
As shown in figure 1, oral area 12 has the cylindrical portion 121 as cylinder, and formed to the peripheral part of cylindrical portion 121 is prominent
Fixed part 122.
The function as the stream that its inner side is flowed through for liquid of cylindrical portion 121.Thus, liquid can be from bag main body 11
To outside discharge, bag main body 11 can be injected liquid into.
In addition, the fixed part 122 of the cardinal extremity peripheral part formation flat pattern in cylindrical portion 121.Fixed part 122 is by piece
Material 10 is fixed on the part of sheet material 10 in the state of clamping.
It should be noted that under unused state, lid 15 is equipped with cylindrical portion 121, so that by incorporating section 111 in liquid-tight manner
Sealing.
Oral area 13 is made up of internal diameter and the external diameter tubular part thinner than the internal diameter and external diameter of oral area 12.In addition, oral area 13 is solid
Due to the vicinity of (oral area 12 of fixed marsupial main body 11) edge.On oral area 13, one end is prominent into bag main body 11 to be set
Put, the other end is located at the outside of bag main body 11.Thereby, it is possible to by the inside and outside connection of bag main body 11.
In addition, oral area 13 have as tubulose tube 131, and to the peripheral part of tube 131 it is prominent formed consolidate
Determine portion 132.
The function as the stream that its inner side is flowed through for liquid of tube 131.Thus, liquid can be from bag main body 11
To outside discharge, bag main body 11 can be injected liquid into.
In addition, being formed with the fixed part 132 of flat pattern in the midway of the length direction of tube 131.Fixed part 132 is
The part of sheet material 10 is fixed in the state of being clamped by sheet material 10.
It should be noted that the end connection positioned at outside of oral area 13 is with flexible pipe 14.Thereby, it is possible to via pipe
14 and fluid bag 1 and other medicine equipments etc. are connected.In addition, there is breaking component positioned at the end of the inner side of oral area 13, should
Breaking component can by bending and being broken so that above-mentioned open-ended, thus by bag main body 11 with pipe 14 is interior connects.
As oral area 12 and the constituent material of oral area 13, various thermoplastic resins and/or thermosetting resin, light can be enumerated
The various curable resins such as curable resin.Specifically, it can enumerate such as polyethylene, polypropylene, ethylene-propylene copolymer
Polyolefin, polyvinyl chloride, polystyrene, polyamide, polyimides, makrolon, poly- (4-methyl-1-pentene), ionomer,
Acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-benzene second
Alkene copolymer (AS resins), BS, polyethylene terephthalate (PET), poly terephthalic acid fourth
The polyester such as diol ester (PBT), polyethers, polyether-ketone (PEK), polyether-ether-ketone (PEEK), PEI, polyacetals (POM), polyphenyl
Ether, polysulfones, polyether sulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene (PTFE), Kynoar,
Other fluorine resins, epoxy resin, phenolic resin, Lauxite, melmac, organic siliconresin, polyurethane etc., or with
Above-mentioned copolymer, mixture, polymer alloy based on these etc., can also use above-mentioned one kind in these or by it is above-mentioned this
Being used in combination in a little.
When transporting, fluid bag 1 as described above is folded at lattice 23, the state so as to be set as doubling.In addition, folding
When folded, as shown in figure 5, it is preferred that being folded in the way of pipe 14 is clamped in inner side.
For fluid bag 1, in the state of the storage of incorporating section 113 liquid 100, the storage of incorporating section 114 liquid 101,
When for example transport it is medium to bag main body 11 apply external force if, according to the difference of its degree, exist weld portion 2 it is peeling-off,
And/or sheet material is broken, so that the possibility of liquid 100 or liquid 101 to External leakage, but for fluid bag 1, its
As effectively preventing or suppress the composition of this phenomenon.
Hereinafter, it is explained.Fig. 2 (a) and (b) are the line A-A sectional view in Fig. 1.As shown in Fig. 2 (a), weld portion
2 part for the overlapping part holt melt of sheet material 10 is connect, from being untill the outer rim of bag main body 11 the border of incorporating section 111
Weld portion 2.
Above-mentioned weld portion 2 has the higher strong weld portion 21 (the first weld portion) of heat seal strength, and heat seal strength is than strong welding
The low weak weld portion 22 (the second weld portion) of the heat seal strength (the average heat seal strength on the face direction of sheet material 10) in portion 21.At this
In embodiment, the total length of the length direction of above-mentioned strong weld portion 21 and weak weld portion 22 throughout weld portion 2 and formed.
Strong weld portion 21 is located at the outer edge side of sheet material 10 among weld portion 2, and weak weld portion 22 is located among weld portion 2
The inner side (that is, positioned at the side of incorporating section 111) of bag main body 11.
On strong weld portion 21, sheet material 10 length L21 (from the average length in the inner side of bag main body 11 to outside), do not have
It is particularly limited to, preferably more than 3mm and below 30mm, more preferably more than 5mm and below 25mm.In addition, on weak welding
The length L22 (from the average length in the inner side of bag main body 11 to outside) of the sheet material 10 in portion 22, is not particularly limited, and is preferably
More than 0.1mm and below 20mm, more preferably more than 0.5mm and below 10mm.
The ratio between length L21 and length L22 L22/L21 both can be the length direction along weld portion 2 to be constant, can also have
There are different parts.Above-mentioned is preferably more than 0.01 and less than 2.5 than L22/L21.Thereby, it is possible to prevent or suppress described hereinafter
Liquid leakage.
Face direction of the thickness of strong weld portion 21 along sheet material 10 and be constant.In addition, weak weld portion 22 has cumulative portion
221, the thickness in the cumulative portion 221 towards the inner side (that is, incorporating section 111) of bag main body 11 and it is cumulative.Above-mentioned cumulative portion 221 passes through
The manufacture method of fluid bag described hereinafter is formed, at that time, and cumulative portion 221 is the part as weak weld portion 22.
When the difference of the maximum gauge in cumulative portion 221 and minimum thickness is set into a, by cumulative portion 221 it is sheet material, from bag master
When the length of the scope in the inner side of body 11 to outside is set to b, the ratio between the two, which is that a/b is preferred, meets more than 0.05 and less than 0.25
The relation of relation, more preferably satisfaction more than 0.07 and less than 0.23.Let out thereby, it is possible to the liquid that prevents or suppress described hereinafter
Leakage.It should be noted that in the present embodiment, length L22 and b is identical value.
Here, as shown in Fig. 6 (a), if never applying the nature of external force to conventional fluid bag 1 ', switching to liquid
If bag 1 ' applies the external force oppressed it, then stress concentration is in the boundary portion of weld portion 2 ' Yu incorporating section 111 '.According to
Shown in the difference of its degree and/or heat seal strength etc., such as Fig. 6 (b), fracture occurs for the sheet material of weld portion 2 ' so as to inside sometimes
Liquid is leaked.In addition, (not illustrated) is due to above-mentioned stress concentration, the sheet material at the place of weld portion 2 ' is peeled off each other sometimes.
One of its reason is that the heat seal strength of weld portion 2 ' is constant.If heat seal strength is constant, weld portion 2 ' is shelled since inner side
From and peel off at one stroke to outside.
In the present invention, if from if the nature shown in Fig. 2 (a) applies external force, such as shown in Fig. 2 (b), stress concentration
In the weak weld portion 22 (cumulative portion 221) towards incorporating section 111.Now, sheet material 10 is peeling-off in weak weld portion 22.Thus,
Stress can be relaxed and exceedingly concentrate on weld portion 2.That is, for fluid bag 1, by forcing sheet material 10 in weak weld portion 22
Peel off, so as to relax above-mentioned excessive stress concentration, be broken thus, it is possible to prevent from peeling off to strong weld portion 21, sheet material 10.
As a result, it is possible to prevent weld portion 2 is overall from occurring fracture or peeling off, the liquid 100 of incorporating section 111 can be prevented to External leakage.
Particularly, reduced width portion 112 is the part for being prone to above-mentioned stress concentration.For fluid bag 1, due to
Be formed with strong weld portion 21 and weak weld portion 22 in the reduced width portion 112, therefore in reduced width portion 112, can prevent or
Suppress liquid 100 to External leakage.
In addition, for weak weld portion 22, heat seal strength towards incorporating section 111 decrescence.That is, for weak weld portion 22
For, in the part in face of incorporating section 111, heat seal strength is minimum, with from incorporating section 111 towards outside heat seal strength forward
Increase.According to composition as described above, when the sheet material 10 of weak weld portion 22 is peeling-off, as the state gradually peeled off.Thus,
It can more positively prevent from weak weld portion 22 from peeling off at one stroke to peel off to strong weld portion 21.
In addition, in the present embodiment, the cumulative rate of the thickness in cumulative portion 221 is constant.Therefore, for weak weld portion 22
Speech, heat seal strength is towards outside with constant ratio step-down.That is, for weak weld portion 22, from the inner side of bag main body 11 to
The decrescence rate of heat seal strength in the range of outside is constant.Thus, can be stably when the sheet material 10 of weak weld portion 22 is peeled off
Peel off, can more reliably play the effect above.
Next, using Fig. 3, the manufacture method (manufacture method of fluid bag of the invention) to fluid bag 1 is illustrated.
Fig. 3 is the sectional view for illustrating the manufacture method of the fluid bag of the present invention, and (a) is the figure for showing arrangement step,
(b) it is that the figure of thermal welding process is shown.
The manufacture method of fluid bag 1 has [1] arrangement step, [2] thermal welding process, and [3] refrigerating work procedure.
Hereinafter, the manufacture method of fluid bag 1 is illustrated first, then illustrates the hot melting and connecting device 3 used in this manufacture method.
As shown in Fig. 3 (a) and (b), hot melting and connecting device 3 has clamps sheet material 10 in opposite directions, carries out in this clamped condition
The first mould 31 and the second mould 32 of thermal welding.
First mould 31 is made up of the block mould that heater is built-in with inner side.First mould 31 is configured in the second mould
The top of tool 32, and be configured to move up and down.In addition, as the first mould 31 lower surface pressurized plane 310 have with
The relative flat tabular surface 311 of second mould 32 and inclined plane 312, the inclined plane 312 relative to tabular surface 311 to from
The remote side of second mould 32 is inclined upwardly.Tabular surface 311 is located at left side in Fig. 3 (a), and inclined plane 312 is located at right in Fig. 3 (a)
Side.
It should be noted that tilt angle theta of the inclined plane 312 relative to tabular surface 311, inclined plane 312 and tabular surface
The length L1 in 311 parallel directions (left and right directions in Fig. 3), and the direction vertical with tabular surface 311 of inclined plane 312 length
L2, can coordinate the shape in cumulative portion 221 and suitably set.
Second mould 32 is made up of the block comprising silicon.The upper surface of second mould 32 is that pressurized plane 320 is put down by flat
Smooth face 321 is constituted.The tabular surface 321 is the part for the sheet material 10 being configured with before welding.
Hereinafter, to being illustrated using above-mentioned hot melting and connecting device 3, fluid bag 1 manufacture method.
[1] arrangement step
First, the sheet material 10 for being shaped to tubular is placed on the tabular surface 321 of the second mould 32.Now, by not scheming
The location division (such as projection) of the second mould 32 shown, can be properly aligned within the first mould by the part as weld portion 2
Between the mould 32 of tool 31 and second.
In addition, (not illustrated) is by advance configuring oral area 12 between sheet material 10, by following process by mouth
Bag main body 11 is fixed in portion 12.
[2] thermal welding process
Shown in secondary To, such as Fig. 3 (a) and (b), heated first mould 31 is pressed against the sheet material on the second mould 32
10.Thus, heated under the clamp position that the lap of sheet material 10 is clamped each other, so as to form weld portion 2.
Now, first, as shown in Fig. 3 (a), the partial melting extruded by the tabular surface 311 of the first mould 31 of sheet material 10
Or softening.Also, as shown in Fig. 3 (b), as shown in arrow in Fig. 3 (b), the melting of sheet material 10 or the part that has softened are to second
Clearance G movement between the inclined plane 312 of the mould 31 of tabular surface 321 and first of mould 32.The part that this is moved is through hereinafter
Described refrigerating work procedure and as cumulative portion 221.
If, can be by addition, further continued in the state of shown in Fig. 3 (b) by the first mould 31 if heating
The both sides' melting or softening of overlapping sheet material 10 up and down.
In addition, heating-up temperature is preferably more than 180 DEG C and less than 240 DEG C, more preferably more than 190 DEG C and less than 230 DEG C.
Thus, although also related to the constituent material and/or thickness of sheet material 10, however positively sheet material 10 can be melted, can be with
The shorter time forms weld portion 2.
The time (that is, the time that the first mould 31 is pressed against to sheet material 10) that sheet material 10 is heated using the first mould 31 is excellent
Elect as more than 2.0 seconds and less than 6.0 seconds, more preferably more than 3.0 seconds and less than 5.0 seconds.Thereby, it is possible to by sheet material 10 positively
Melting.If if the heat time is too short, although also related to the temperature of the first mould 31, there is the melting or soft of sheet material 10
Change becomes insufficient possibility.On the other hand, if the heat time is long, the time expended in thermal welding process become compared with
It is long, show the tendency of productivity ratio decline.
In addition, as shown in Fig. 3 (b), pressure P when sheet material 10 is clamped is preferably more than 0.05Pa and below 2.00Pa,
More preferably more than 0.10Pa and below 1.00Pa.Thereby, it is possible to improve the heat seal strength of weld portion 2.
If hypertonia, although also related to the thickness of sheet material 10, the thickness of resulting weld portion 2 shows to become
Thin tendency.On the other hand, if pressure is excessively weak, the heat seal strength of weld portion 2 there is a possibility that insufficient.
[3] refrigerating work procedure
Next, the part of the state after melting or softening of sheet material 10 is cooled down.In the present embodiment, pass through
Abutted with the metallic plate of normal temperature, so as to be cooled down.
Chilling temperature in this process be preferably more than 50 DEG C and less than 100 DEG C, more preferably more than 60 DEG C and 90 DEG C with
Under.Thereby, it is possible to substantially ensure that the heat seal strength of weld portion 2.
Cool time in this process is preferably more than 3.0 seconds and less than 7.0 seconds, more preferably more than 4.0 seconds and 6.0 seconds
Below.The cooling of weld portion 2 can positively be carried out.
It should be noted that in this refrigerating work procedure, both can purge cold wind to carry out by cooling device (not shown)
Cooling, can also be cooled down by natural cooling.
Also, supply liquid 100, while supplying liquid 101 to incorporating section 114 to incorporating section 113, the supply mouth is melted
Connect.
In through above process [1]~fluid bag 1 obtained from [3], cumulative portion 221 as described above is formed.In addition,
Thickness at cumulative portion 221, the thickness than the part beyond the cumulative portion 221 in weld portion 2 is thicker.Therefore, in thermal welding work
The heat conducted in sequence is smaller.Thus, foring the part in cumulative portion 221 turns into the relatively low weak weld portion 22 of heat seal strength, its
He partly turns into the heat seal strength strong weld portion 21 higher than the heat seal strength of weak weld portion 22.
In addition, the increase and decrease of the thickness with cumulative portion 221, the heat seal strength of weak weld portion 22 also changes.Cumulative
It is also the higher part of heat seal strength among weak weld portion 22 for the part of thinner thickness among portion 221, for
It is also the weaker part of heat seal strength among weak weld portion 22 for the thicker part of thickness.Accordingly, it is capable to access following weak
Weld portion 22：Wherein, the heat seal strength of the side of incorporating section 111 is weaker, with to the opposite side of incorporating section 111 forward and welding is strong
Degree is gradually uprised.
According to fluid bag 1 as described above, as it was noted above, can prevent or suppress weld portion 2 it is overall occur fracture or
Peel off, the liquid 100 of incorporating section 111 can be prevented to External leakage.
More than, the manufacture method of fluid bag and fluid bag based on embodiment illustrated to the present invention is said
It is bright, but the invention is not restricted to this, the composition in each portion can be replaced into being formed arbitrarily with said function or any process.Separately
Outside, other can also be added to the present invention and is formed arbitrarily thing and/or process.
It should be noted that in the above-described embodiment, being carried out with the fluid bag for storing peritoneal dialysis solution to bag main body 11
Explanation, but the invention is not restricted to this, for example, it is also possible to be to store physiological saline, electrolyte solution, ringer's solution, full stomach and intestine
The fluid bag of outer nutrition, glucose solution, water for injection, oral nutritional supplements etc..
Embodiment
Hereinafter, the present invention is further illustrated based on embodiment.
1. the research of the fluid bag with the weld portion for foring cumulative portion
The formation of 1-1. fluid bags
[embodiment 1]
[1] first, prepare object that the sheet forming being made up of the polypropylene that thickness is 300 μm is tubular.
[2] next, using the hot melting and connecting device 3 shown in Fig. 3 (a) and (b), being melted the end of tubular using thermal welding
Connect, cooled down afterwards, so as to obtain the fluid bag of embodiment 1.
In addition, as the first mould 31, the length L1 for having used inclined plane 312 is 3.0mm, and the length L2 of inclined plane is
0.5mm mould.On the cumulative portion of the weld portion of the fluid bag of gained, it is set to when by the difference of its maximum gauge and minimum thickness
A, b is set to by the length (length in the range of from the inner side of bag main body 11 to outside) in the face direction in sheet material in cumulative portion
When, the ratio between the two is that a/b is 0.17 (referring to Fig. 2 (a)).In addition, length (the weld portion of banding of strong weld portion and weak weld portion
Width length) the ratio between be 3：1.
It should be noted that heating-up temperature during welding is set into 238.0 DEG C, heat time and pressing time are set to
3.5 seconds, chilling temperature is set to 20 DEG C, will be set to cool time 3.00 seconds, so as to obtain the fluid bag of embodiment 1.
[embodiment 2]
In the process [2], the length L1 of inclined plane 312 has been used to be 3.0mm as the first mould 31, inclined plane
Length L2 is 0.2mm mould, in addition, by the mode same with above-described embodiment 1, obtains the fluid bag of embodiment 2.Need
It is noted that for the fluid bag of embodiment 2, the ratio between the two is that a/b is 0.07.
[embodiment 3]
In the process [2], the length L1 of inclined plane 312 has been used to be 3.0mm, the length of inclined plane as the first mould 31
The mould that L2 is 0.7mm is spent, in addition, by the mode same with above-described embodiment 1, the fluid bag of embodiment 3 is obtained.Need
Illustrate, for the fluid bag of embodiment 3, the ratio between the two is that a/b is 0.23.
[comparative example 1]
Hereinafter, the present invention is further illustrated based on embodiment.
1. the research of the fluid bag with the weld portion for foring cumulative portion
The formation of 1-1. fluid bags
[1] first, prepare object that the sheet forming being made up of the polypropylene that thickness is 300 μm is tubular.
[2] next, using upper side mold and lower die with parallel clamping face, so as at the both ends of tubular
Form the weld portion that width is 3.0mm.
It should be noted that heating-up temperature during welding is set into 238.0 DEG C, heat time and pressing time are set to
3.5 seconds, chilling temperature is set to 20 DEG C, will be set to cool time 3.00 seconds, so as to obtain the fluid bag of comparative example 1.Also, profit
The fluid bag of each embodiment and comparative example is evaluated with method once.
＜ tension tests ＞
First, as shown in figure 4, the sheet material 10 comprising weld portion 2 is cut into 10mm square, so that making welding has 2 pieces
The test film of material 10.The test film The, uses Automatic Drawing accurate universal testing machine (Shimadzu Seisakusho Ltd.'s company system, Autograph
AGS-J), with the 25N tensile force condition of 10 seconds, the both ends for entering to be about to each sheet material to the test film are stretched in the opposite direction
180 ° of tension tests.Now, the fluid bag on embodiment 1~3, from the weak side stretching of weld portion 22.Then, determine and peel off
Part length (that is, the maximum length for the portion among test film from the end peeled off to welding).
＜ shatter tests ＞
As shown in figure 5, into casing 200 (wherein, there is lattice 201 in central portion, and with 2 accommodation space S),
Store 2 respectively in a folded state in each accommodation space S, amount to 4 fluid bags, and sealed.Store empty each
Between in S, fluid bag 1 every 2 is carried out overlapping so as to storing.Also, in this condition, with the thickness direction direction of fluid bag 1
Vertical direction, fall casing direction of arrow along along Fig. 5.
Prepare 5 casings 200 that are as described above, being accommodated with 4 fluid bags 1.Also, amount to 20 fluid bags 1 it
In, in accommodation space S, to it is on the downside of vertical direction, be loaded with upside other fluid bag fluid bags fluid bag (amount to
5), verify whether occur liquid leakage, and determine the number for occurring liquid leakage.
It should be noted that the temperature of fluid bag is set into 5 DEG C, the height fallen is set to 80cm, by each casing 200
It is each fall 10 times, due to the fracture of weld portion 2 number of the fluid bag of liquid leakage occurs for measure.
Table 1 below will be shown in by each embodiment and the evaluation result of the fluid bag of comparative example that are obtained with upper type.
Table 1
As shown in table 1, for the fluid bag of each embodiment, compared with the fluid bag of comparative example, it is not susceptible to by melting
Liquid leakage caused by socket part occurs fracture or peeled off.In addition, in tension test, the length peeled off is longer, more can
Relax stress concentration when being applied in impact.
It should be noted that in the present invention, following all fluid bags can be obtained by confirming, if weld portion have it is cumulative
Portion, i.e., it is more excellent than existing fluid bag.
In addition, hereinbefore, enumerate preferred embodiment that the present invention is described, but the present invention is not limited to
Above-mentioned embodiment, certainly, without departing from the gist of the present invention, can carry out various changes.
Claims (11)
1. a kind of fluid bag, possesses a bag main body, the bag main body is that thermal welding is formed each other by soft sheet material, and in its weld portion
Inner side have can store the incorporating section of liquid,
The fluid bag is characterised by that the weld portion, which has, is arranged at the weld portion and the boundary portion of the incorporating section
And the sheet material thickness towards the inner side of the bag main body and cumulative cumulative portion.
2. fluid bag according to claim 1, wherein, the weld portion has the first weld portion and the second weld portion, institute
The second weld portion is stated to be arranged at than first weld portion more by the inner side and than the heat seal strength of first weld portion
It is low,
The cumulative portion is arranged at second weld portion.
3. fluid bag according to claim 1 or 2, wherein, at the cumulative portion, the heat seal strength direction of the sheet material
The inner side of the bag main body and decrescence.
4. fluid bag according to any one of claim 1 to 3, wherein, when by the maximum gauge in the cumulative portion and most
The difference of small thickness is set to a, when the length of the scope in inner side to the outside from the bag main body in the cumulative portion is set into b, and two
The ratio between person is the relation that a/b meets more than 0.05 and less than 0.25.
5. fluid bag according to any one of claim 1 to 4, wherein, the cumulative rate of the thickness in the cumulative portion is permanent
Fixed.
6. fluid bag according to any one of claim 1 to 5, wherein, the thickness of the sheet material for more than 0.2mm and
Below 0.8mm.
7. fluid bag according to any one of claim 1 to 6, wherein, the sheet material contains polyolefin as main material.
8. fluid bag according to any one of claim 1 to 7, wherein, the bag main body is that global shape turns into flat
The bag main body of shape, and the reduced width that the width with the incorporating section becomes narrow gradually from inner side to the outside of the bag main body
Portion,
The cumulative portion is arranged at the part in face of the reduced width portion.
9. a kind of manufacture method of fluid bag, it is the manufacture method of fluid bag of the manufacture with following bags of main bodys, the bag master
Body is made up of soft sheet material and turns into bag-shaped,
The manufacture method of the fluid bag is characterised by having：
Thermal welding process, by the sheet material, thermal welding, so as to form weld portion, and forms energy in the inner side of the weld portion each other
The incorporating section of liquid is enough stored,
In the thermal welding process, formed and be arranged at the weld portion and boundary portion the and described sheet material of the incorporating section
Thickness towards the inner side of the bag main body and cumulative cumulative portion.
10. the manufacture method of fluid bag according to claim 9, wherein, in the thermal welding process, using with general
The first mould and the second mould for the pressurized plane that the sheet material is clamped and heated in this clamped condition toward each other,
On the pressurized plane of a mould among first mould and second mould, formed to from another mould
The remote inclined inclined plane in direction of tool,
By the inclined plane, the cumulative portion is formed.
11. the manufacture method of the fluid bag according to claim 9 or 10, wherein, the welding temperature in the thermal welding process
Spend for more than 180 DEG C and less than 240 DEG C,
The time that the sheet material is heated in the thermal welding process is more than 2 seconds and less than 30 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016069723A JP6710084B2 (en) | 2016-03-30 | 2016-03-30 | Liquid bag and method of manufacturing liquid bag |
| JP2016-069723 | 2016-03-30 |
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| CN107260538A true CN107260538A (en) | 2017-10-20 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2017176543A (en) | 2017-10-05 |
| CN107260538B (en) | 2021-10-22 |
| JP6710084B2 (en) | 2020-06-17 |
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