WO2003078264A1 - Sac autoportant et procede de fabrication du sac - Google Patents
Sac autoportant et procede de fabrication du sac Download PDFInfo
- Publication number
- WO2003078264A1 WO2003078264A1 PCT/JP2003/003225 JP0303225W WO03078264A1 WO 2003078264 A1 WO2003078264 A1 WO 2003078264A1 JP 0303225 W JP0303225 W JP 0303225W WO 03078264 A1 WO03078264 A1 WO 03078264A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bag
- self
- frame
- closure
- bag body
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/008—Standing pouches, i.e. "Standbeutel"
Definitions
- the present invention relates to a self-standing bag provided with a part of a closure, and more particularly to a self-standing bag which is flexible, has excellent self-supporting properties, and also has excellent attachment strength for a part of a closure, and a method of manufacturing the self-standing bag.
- Background art
- self-supporting bags for liquids such as liquids are mainly used for refilling, and the self-sufficiency has not been given much weight.
- the upper part of the bag bends and functions as a self-supporting bag. I didn't have it.
- self-supporting bags for fluids may have some closures for discharging contents, in which case the upper part becomes heavy and lacks self-reliance. Had become.
- a conventional free-standing bag with a part of the closure is formed by joining a predetermined portion of the peripheral part of the bag body by heat welding, and separately molding a part of the closure, thereby forming a closure between the sheets forming the bag body.
- the present invention is a self-contained bag that retains its function as a self-contained bag when used, until the contents are exhausted, and when discarded, it can be folded down to reduce the capacity and also has excellent attachment strength for a part of the closure. It is another object of the present invention to provide a method for producing a self-standing bag suitable for producing the self-standing bag.
- the present invention is a self-standing bag having a closure part at the top of a bag body having two side films and a bottom film folded in an inverted V-shape at the bottom, At least a lower end edge of the bag body and a heat-welded portion having at least a part of a side edge where the bottom film is present so that the bottom film and the both side films are fixed.
- a self-contained bag characterized in that a substantially inverted concave frame body integrally formed with the closure portion is attached from the upper end edge to both side edges of the self-standing bag.
- the frame may be attached to the side edge where the heat-welded portion is present while leaving a part or the entirety of the heat-welded portion, or the outer surface of each edge of the bag body may be attached. It is more preferable that it is attached so as to cover it.
- the present invention also relates to the method for producing a self-standing bag, wherein at least a bottom edge of the bag main body and at least a side edge where the bottom film exists so that the bottom film and the two side films are fixed. After the parts are heat-welded and joined, the frame is attached to the bag body so that the closure portion is integrated with the frame to form a self-standing bag having a closure portion.
- a method for producing a self-standing bag is provided.
- the self-standing bag of the present invention is a self-standing bag having a closure portion at the top of a bag body having two side films and a bottom film folded in an inverted V shape at the bottom, and at least the bottom surface
- Upper end of the bag body having a heat-welded portion in which the lower edge of the bag body and at least a part of the side edge where the bottom film is present are heat-welded so that a film and the films on both sides are fixed.
- a substantially inverted concave frame body in which a part of the closure is integrally molded is attached, so that a portion of the frame body on each side edge of the bag main body is a so-called rib of the bag body.
- the self-sustainability of the bag body is improved, and even if the bag body has a closure at the top, sufficient self-sustainability can be maintained until the contents are exhausted. . And since the closure is partly formed integrally with the frame, the attachment strength of the closure is also excellent. Also, various closures can be easily and securely attached.
- a part of the closure may be integrally molded with the frame at the same time as the molding of the frame. However, a pre-molded one is used. May be used.
- the heat-welded portion is provided at the side edge where the bottom film is present, the side edge where the bottom film is not present, the lower edge, the lower corner (the lower substantially semi-circular welded portion, etc.). Can be.
- the frame of the present invention may be attached so as to extend from the upper edge of the bag body to the entire length of both side edges.
- the heat-sealed part is attached to the side edge where the part is present, part or all of the heat-welded part is left, the independence is secured by the expansion of the frame and the bottom film, and the frame is The amount of resin used for molding is small and light. In addition, a portion without a frame is more suitable because it can be easily folded and discarded.
- the joining strength of the upper edge and both side edges of the bag body can be reinforced. It is suitable.
- the method for producing a self-supporting bag according to the present invention is characterized in that a film constituting the bag main body has a self-standing bag shape, and a lower edge and at least a bottom surface of the bag main body are fixed so that at least a bottom film and two side films are fixed. After joining a part of the side edge where the film is present by heat welding, it is attached to the bag body so that a part of the closure is integrated with the frame to make a self-standing bag with a closure part. Things. Therefore, in the present invention, when making a self-standing bag, only the lower edge of the film or the like and the lower side of both side edges are fixed so that, for example, only the bottom film and the side film of the bag body are fixed.
- the frame body joins the unwelded end portions of the bag body and the unwelded portions of both side edges, thereby closing the bag body.
- a self-standing bag with one can be made.
- the bag is made with a bonding strength such that the portion other than the lower side of the side edge is temporarily formed into a bag shape, the bonding strength is reinforced by attaching the frame. Therefore, the edges of the bag body can be more easily and reliably joined. That is, if the bottom film is heat-sealed, the bag body may be completely made or may be incomplete.
- the self-standing bag of the present invention has excellent strength, and the attachment of the closure and the frame is easier and more reliable, and is suitable as a method for producing the self-standing bag of the present invention.
- the formation of the frame, attachment to the bag body, and joining are preferably performed by injection molding of a resin. It is preferable that a part of the closure is integrally joined.
- the self-supporting bag of the present invention is flexible and also excellent in self-sustainability, it functions as a self-supporting packaging bag when used, and satisfies self-sustainability even if a part of the closure is provided until the contents are exhausted. However, after use, it can be rolled up and discarded in a small capacity, and it also has excellent attachment strength for a part of the closure. It is also possible to reinforce the joint strength. Therefore, the self-standing bag of the present invention is easy to use at the time of use, has excellent strength as a packaging bag, can be easily reduced in volume at the time of disposal after use, and is suitable for environmental protection. Further, according to the method for producing a self-supporting bag of the present invention, a self-standing bag having the above-described characteristics and particularly excellent in strength as a packaging bag can be easily and reliably manufactured. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a schematic perspective view of a self-standing bag illustrating one configuration example of the self-standing bag of the present invention.
- FIG. 2 is a schematic front view of a bag main body obtained in a first step for explaining one configuration example of the method for producing a self-standing bag of the present invention.
- FIG. 3 is a schematic front view of the self-standing bag obtained in the second step of the above manufacturing method.
- FIG. 1 is a schematic perspective view showing a state in which a self-standing bag 1 is inflated, which explains one configuration example of a self-standing bag of the present invention.
- the self-standing bag 1 is provided with a closure portion 3 at the upper end of the bag body 2, and is formed substantially integrally with the closure part 3 from one side edge 2a to the upper edge 2b to the other side end 2a.
- a concave frame 4 is attached so as to sandwich each edge 2a, 2b, 2a from the outside.
- the bag body 2 is formed by folding a long film into four so that it has two side films 2c, 2c and a bottom film 2d folded in an inverted V-shape at the bottom.
- the side edges 2a, 2a of the two side films 2c, 2c are joined by heat welding, and a part of the folded portion of the bottom film 2d is substantially semicircular.
- the lower semi-circular welds 2 e and 2 e are formed by arc welding.
- the bottom surface 2 f is formed.
- the bottom body and the self-sustainability of the bag body 2 are reinforced by lower substantially semi-circular welded portions 2e and 2e.
- a single-layer or multilayer film is used as the film constituting the bag body 2 (side film 2c, 2c, bottom film 2d). These films may be the same as conventional films, but they do not necessarily need to have heat-sealing properties.
- the film surface on the outer surface forms a frame. It is preferable that the adhesiveness to the resin to be injected to the surface is good.
- the multilayer film is a co-extruded film, a laminate film, or the like.
- nylon, polyester film or resin layer for example, a gas barrier layer (EV OH, chloride) Co-extrusion type with vinylidene, ceramic vapor deposition, etc.) or a film of a laminate type thereof are preferably used.
- a gas barrier layer EV OH, chloride
- Co-extrusion type with vinylidene, ceramic vapor deposition, etc. or a film of a laminate type thereof are preferably used.
- a thickness of 20 to 900 m is applied as the thickness of the film.Thick films are suitable for independence, but thin films are preferable for flexibility and lightness, and even thin films By attaching the frame 4, independence can be secured. From the viewpoint of moldability and handleability, a desirable thickness is preferably from 60 to 200 m.
- the film is not limited to a synthetic resin film, but may be a single-layer product or a laminated product of paper or metal foil.
- the shape and size of the closure part 3 are not particularly limited, and may be any shape and size according to the intended use of the packaging bag.
- the self-supporting bag with a part of the closure is usually manufactured by inserting a closure member into the upper end of the self-standing bag body by hand or by another operation using an automatic insertion machine and heat-sealing the part.
- the thickness of the material is large, it is difficult to securely adhere the closure member to the part of the closure at the upper end of the self-standing bag main body and the entrance, which often causes difficulties in welding work.
- the closure part 3 is molded so as to be integral with the frame 4 as described later, such difficulty does not occur.
- the frame 4 is integrally molded with the closure part 3 simultaneously by, for example, injection molding, or the closure part 3 is molded first and then integrally molded with the closure part 3 in a mold. It is.
- resins are not particularly limited as long as they can be injection-molded and can be joined to the edge of the bag body 2, but are generally used resins such as polyethylene and polyethylene.
- injectable plastics such as nylon, polyester, various engineering resins, blends or copolymers of these resins with elastomers and the like can also be used.
- the frame 4 has a shape along one side edge 2a to the upper edge 2b to the other side edge 2a of a bag body 2 made of a resin film molded in advance into a predetermined self-standing bag shape.
- the frame in the self-standing bag of the present invention may have a length such that the side edge extends over the entire length of the side edge as in a frame 4 'shown in FIG. Also, as in the frame 4 shown in FIG. 1, even if the length is such that the lower part of the side edge is left, a part of the portion where the film of the bag body 2 is folded as described above is used.
- the bottom part strength and independence are reinforced by the lower substantially semi-circular welds 2 e and 2 e, which are heat-welded in substantially semi-arcs, and the heat-welded parts at the side edges. Independence and strength as a bag can be obtained.
- the frame body 4 When the length of the portion corresponding to the side edges 2a, 2a of the frame body 4 is set to such a length that the lower portion of the side edges 2a, 2a remains, the frame The length of the corresponding portion of the body 4 is preferably at least 60%, more preferably at least 80% of the total length of the side edge. If the length is too short, the effect of the present invention may not be sufficiently obtained.
- the upper part of the heat-welded portion is a frame body.
- the length should be such that the tip of the head reaches, and the lower part should remain.
- the width and thickness of the frame 4 are not particularly limited.
- the frame 4 shown in FIG. If the lower side of the drawing is tapered, the width is 1 to 20 mm, especially 5 to: L 0 mm, and the thickness:! It is preferable that the shape is set to be about 10 mm, particularly 2 to 5 mm.
- the average width and the average thickness are within the above ranges.
- the width is too narrow or the thickness is too thin, it may be difficult to obtain sufficient mounting strength to the bag body 2. If the thickness is too thick, the amount of resin used increases, and the viewpoint of disposability If the width is too wide, it may be difficult to obtain a sufficient internal volume of the self-standing bag.
- FIG. Fig. 2 is a schematic view of the self-standing bag made in the first step before attaching the frame.
- FIG. 3 is a schematic front view of another configuration example of the self-standing bag of the present invention obtained in the second step.
- the bag body is formed into a self-standing bag shape having side films 2c, 2c and a bottom film 2d folded into an inverted V-shape at the bottom. Fold the long film that constitutes 2 so that the lower side folds into four, and join the lower edge and one side edge 2a and the other side edge 2a by heat welding such as heat sealing or ultrasonic sealing.
- the side films 2c, 2c, and the bottom film 2d are fixed by joining the portions 2e and 2e of the folded portion of the film by means such as heat welding so as to form a substantially semicircular arc.
- a bag body 2 having an open upper end is made. In this step, a part of the upper edge 2b of the bag body 2 can be heat-welded as long as the attachment of the closure member is not impaired as described later.
- one side edge 2a and the other side edge 2a are joined together as long as the side films 2c and 2c and the bottom film 2d are fixed and the bottom surface 2f is formed.
- the heat-welded portion is, for example, one side edge 2a and the other side edge 2 in FIG. It is preferable that a contains a point (the base of the bottom film) that intersects the line indicating the bottom surface 2f because the strength of the self-standing bag of the present invention is excellent.
- the joining strength is not particularly required as in a conventional free-standing bag. It may be about the degree. However, even in this case, it may not be possible to ensure the adhesive strength at the bottom of the frame alone (the base of the bottom film is the most stressed in a self-supporting bag). About It is preferable to heat-weld with sufficient bonding strength. When the frame does not extend over the entire length of both side edges as described above, portions of the side edges to which the frame is not attached should be heat-welded with sufficient bonding strength in advance. preferable.
- the alignment of the back surface film becomes easy, Even if the closure member and the frame can be integrally molded at an accurate position, or if a separately molded closure is used, the frame can be integrated with the frame at the correct position by insert molding. Can be molded.
- the film constituting the bag body 2 obtained in the first step is set in a usual injection molding machine, and the closure 3 is placed at a predetermined position at the upper end of the film constituting the bag body 2.
- the thermoplastic resin extending from a part of the closure is used to cover the outer surface (back surface) of the upper edge 2b, both side edges 2a, and 2a of the film constituting the bag body 2.
- the body 4 ′ is injection molded, and the frame body 4 ′ is joined to the upper end edge 2 b and both side edges 2 a, 2 a of the bag body 2 to produce the self-standing bag 1 ′ shown in FIG.
- the self-standing bag is filled with contents (not shown) from a part of the closure, and has a free-standing shape with a widened bottom. After sealing the closure, it is stored and transported. In use, the contents can be discharged from a part of the closure.
- the type of contents is not particularly limited, and it is possible to handle a wide range of contents by appropriately selecting the type of material, such as the film constituting the bag body and a part of the closure. It is preferable to have, for example, a liquid, a viscous material, a powder, and a small-diameter solid shape.
- This self-standing bag can maintain its self-sustainability until the contents are exhausted, since both side edges of the frame function as ribs, and can be rolled up and made small when discarded. Therefore, according to the self-standing bag of the present invention, it is possible to obtain a flexible container that can be replaced with a bottle, a bottle, a can, and the like, and that can be fitted with various closures.
- the present invention is not limited to the above configuration.
- a 45-degree linear welded part extending from the base of the bottom film shall be provided.
- Various changes may be made without departing from the spirit of the invention.
- closures can be selected in various ways. For example, a cap that can be sealed with a screw or a cap that can be opened and closed with a hinge may be added, or a closure section provided with a nozzle for sucking and taking out contents may be used.
- the shape outside the bag itself does not impair the function of being self-supporting due to the open bottom, it can be made into variously designed deformed bags.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/508,026 US20050141788A1 (en) | 2002-03-19 | 2003-03-18 | Self-standing bag and method of manufacturing the bag |
AU2003236037A AU2003236037A1 (en) | 2002-03-19 | 2003-03-18 | Self-standing bag and method of manufacturing the bag |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002076890A JP4231989B2 (ja) | 2002-03-19 | 2002-03-19 | 自立袋及びその製造方法 |
JP2002-76890 | 2002-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003078264A1 true WO2003078264A1 (fr) | 2003-09-25 |
Family
ID=28035474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/003225 WO2003078264A1 (fr) | 2002-03-19 | 2003-03-18 | Sac autoportant et procede de fabrication du sac |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050141788A1 (fr) |
JP (1) | JP4231989B2 (fr) |
AU (1) | AU2003236037A1 (fr) |
WO (1) | WO2003078264A1 (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4932139B2 (ja) * | 2004-02-20 | 2012-05-16 | 藤森工業株式会社 | 包装袋 |
US20060021996A1 (en) * | 2004-07-30 | 2006-02-02 | Scott L J Iii | Multi-chambered drink bottle |
JP5124085B2 (ja) * | 2005-08-24 | 2013-01-23 | 押尾産業株式会社 | 自立袋及びその製造方法 |
JP5202814B2 (ja) * | 2006-03-28 | 2013-06-05 | 藤森工業株式会社 | スタンディングパウチおよびその製造方法 |
JP5000168B2 (ja) * | 2006-03-28 | 2012-08-15 | 藤森工業株式会社 | スタンディングパウチの製造方法およびその方法で製造されたスタンディングパウチ |
JP2011006122A (ja) * | 2009-06-29 | 2011-01-13 | Daiwa Gravure Co Ltd | 液体収納袋 |
CN104627536A (zh) | 2009-07-09 | 2015-05-20 | 先进技术材料股份有限公司 | 基于衬里的存储*** |
JP6087833B2 (ja) | 2010-11-23 | 2017-03-01 | アドバンスド テクノロジー マテリアルズ,インコーポレイテッド | ライナーベースの分注器 |
WO2012118527A1 (fr) | 2011-03-01 | 2012-09-07 | Advanced Technology Materials, Inc. | Enveloppe externe et garniture interne imbriquées moulées par soufflage et procédés de fabrication de celles-ci |
WO2012152433A1 (fr) * | 2011-05-09 | 2012-11-15 | Cargill, Incorporated | Sachet moulé par étirage-soufflage ou thermoformé et procédé de fabrication d'un tel sachet |
JP5909341B2 (ja) * | 2011-10-18 | 2016-04-26 | 押尾産業株式会社 | 包装袋の製造方法 |
US9098069B2 (en) * | 2011-11-16 | 2015-08-04 | Google Technology Holdings LLC | Display device, corresponding systems, and methods for orienting output on a display |
US8947382B2 (en) | 2012-02-28 | 2015-02-03 | Motorola Mobility Llc | Wearable display device, corresponding systems, and method for presenting output on the same |
US8988349B2 (en) | 2012-02-28 | 2015-03-24 | Google Technology Holdings LLC | Methods and apparatuses for operating a display in an electronic device |
JP5897353B2 (ja) * | 2012-02-29 | 2016-03-30 | 株式会社吉野工業所 | スパウト付き袋状容器 |
CN105683059A (zh) * | 2013-11-06 | 2016-06-15 | 宝洁公司 | 具有产品体积和联接到其的支座结构的容器 |
US20160280439A1 (en) * | 2015-03-27 | 2016-09-29 | Pouch Pac Innovations, Llc | Flexible pouch with reinforced side seal |
US20160297591A1 (en) * | 2015-04-10 | 2016-10-13 | The Procter & Gamble Company | Flexible Containers with Intermediate Bottom Members |
KR101969665B1 (ko) | 2015-04-10 | 2019-04-16 | 더 프록터 앤드 갬블 캄파니 | 보강 시일을 가진 가요성 용기 |
JP6753162B2 (ja) * | 2016-06-21 | 2020-09-09 | 大日本印刷株式会社 | 包装袋 |
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JPS60175049U (ja) * | 1984-04-28 | 1985-11-20 | 三井化学株式会社 | 容器 |
JPS63152554A (ja) * | 1986-12-16 | 1988-06-25 | 株式会社 ニツシヨ− | 袋体およびその製造法 |
JPH02117344U (fr) * | 1989-03-07 | 1990-09-20 | ||
JPH0364228U (fr) * | 1989-10-25 | 1991-06-24 | ||
JPH057642U (ja) * | 1991-07-12 | 1993-02-02 | 株式会社大塚製薬工場 | 輸液バツグ |
JPH05201455A (ja) * | 1992-01-22 | 1993-08-10 | Hiranoya Bussan:Kk | 軟質袋用の注ぎ口構造 |
JPH10101094A (ja) * | 1996-09-30 | 1998-04-21 | Shigeo Kai | 円筒形スタンデイングパウチ |
JP2002136573A (ja) * | 2000-06-27 | 2002-05-14 | Takaaki Katsuhara | ソフトバッグ及びその製造方法 |
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US4353497A (en) * | 1979-10-15 | 1982-10-12 | Mobil Oil Corporation | Free-standing thermoplastic bag construction |
EP0368757A1 (fr) * | 1988-11-09 | 1990-05-16 | Societe Alizol S.A. | Sachet pour produits liquides |
US5971613A (en) * | 1997-04-11 | 1999-10-26 | Kapak Corp. | Bag constructions having inwardly directed side seal portions |
CN1118420C (zh) * | 1998-12-22 | 2003-08-20 | 萩原忠 | 具有真空和流速控制功能的自立型袋状容器 |
JP3952145B2 (ja) * | 2001-12-28 | 2007-08-01 | 藤森工業株式会社 | 自立袋及びその製造方法 |
-
2002
- 2002-03-19 JP JP2002076890A patent/JP4231989B2/ja not_active Expired - Fee Related
-
2003
- 2003-03-18 AU AU2003236037A patent/AU2003236037A1/en not_active Abandoned
- 2003-03-18 WO PCT/JP2003/003225 patent/WO2003078264A1/fr active Application Filing
- 2003-03-18 US US10/508,026 patent/US20050141788A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60175049U (ja) * | 1984-04-28 | 1985-11-20 | 三井化学株式会社 | 容器 |
JPS63152554A (ja) * | 1986-12-16 | 1988-06-25 | 株式会社 ニツシヨ− | 袋体およびその製造法 |
JPH02117344U (fr) * | 1989-03-07 | 1990-09-20 | ||
JPH0364228U (fr) * | 1989-10-25 | 1991-06-24 | ||
JPH057642U (ja) * | 1991-07-12 | 1993-02-02 | 株式会社大塚製薬工場 | 輸液バツグ |
JPH05201455A (ja) * | 1992-01-22 | 1993-08-10 | Hiranoya Bussan:Kk | 軟質袋用の注ぎ口構造 |
JPH10101094A (ja) * | 1996-09-30 | 1998-04-21 | Shigeo Kai | 円筒形スタンデイングパウチ |
JP2002136573A (ja) * | 2000-06-27 | 2002-05-14 | Takaaki Katsuhara | ソフトバッグ及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4231989B2 (ja) | 2009-03-04 |
AU2003236037A1 (en) | 2003-09-29 |
US20050141788A1 (en) | 2005-06-30 |
JP2003276741A (ja) | 2003-10-02 |
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