WO2006061905A1 - Dispositif de clapet de retenue et sac plastique - Google Patents

Dispositif de clapet de retenue et sac plastique Download PDF

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Publication number
WO2006061905A1
WO2006061905A1 PCT/JP2004/018399 JP2004018399W WO2006061905A1 WO 2006061905 A1 WO2006061905 A1 WO 2006061905A1 JP 2004018399 W JP2004018399 W JP 2004018399W WO 2006061905 A1 WO2006061905 A1 WO 2006061905A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
bag
check valve
valve device
film
Prior art date
Application number
PCT/JP2004/018399
Other languages
English (en)
Japanese (ja)
Inventor
Shingo Ishizaki
Yoshifumi Koyanagi
Original Assignee
Ishizaki Shizai Co., Ltd.
Kabushikikaisha Kashiwaraseitai
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ishizaki Shizai Co., Ltd., Kabushikikaisha Kashiwaraseitai filed Critical Ishizaki Shizai Co., Ltd.
Priority to PCT/JP2004/018399 priority Critical patent/WO2006061905A1/fr
Publication of WO2006061905A1 publication Critical patent/WO2006061905A1/fr

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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element

Definitions

  • the present invention relates to a check valve device, and more particularly to a check valve device for degassing internal air from a hermetically sealed plastic bag for compressing and storing a futon or clothing, and the check valve
  • the present invention relates to a plastic bag equipped with a device.
  • a check valve device for a compression bag includes a valve body made of a plastic molded product and a movable lid. Based on the movement of the movable lid, Some have been proposed to open and close the valve body using the spring force of the spring. However, this check valve device has a problem that it is necessary to combine a large number of parts in a complicated manner, and the device becomes bulky as a whole. Furthermore, it is necessary to lock the movable lid so that the movable lid does not operate after deaeration (the lock needs to be released at the start of deaeration), and the operation is complicated.
  • Patent Document 2 proposes a check valve device including a valve body made of a plastic molded product, as in Document 1.
  • this check valve device is also structurally complex, and it is necessary to attach a cap to lock the valve body in order to prevent the inflow of valve body force after bulky deaeration. It is complicated.
  • Patent Document 1 Japanese Patent Laid-Open No. 2003-34379
  • Patent Document 2 US Pat. No. 5,931,189
  • Patent Document 3 Utility Model Registration No. 3025235
  • an object of the present invention is to provide a check valve that is not bulky and has a simple constitutional force, can be deaerated with a simple operation, and reliably retains hermeticity after completion of the deaeration. It is to provide equipment and plastic bags.
  • the check valve device is installed on a part of a plastic film constituting a hermetic type plastic bag, and the tip of the sucking bow I hose is in contact therewith.
  • a check valve device that degass the air inside the bag by starting suction and holds the inside of the bag airtight when the suction stops, and includes a thin hard plastic case, A flat tube-shaped soft plastic valve film housed in a case, the case having an intake port and an exhaust port, the intake port communicating with the inside of the bag, and the exhaust port being outside the bag
  • the valve film is fixed to the case with one end communicating with the air inlet of the case, and the valve part other than the one end is in close contact with the inside of the case.
  • the valve part is deaerated Sometimes it is separated by decompression of the inside of the case and closes after degassing.
  • the check valve device when suction is started by placing the tip of the suction hose of the vacuum cleaner around the exhaust port of the case, first, the inside of the case is decompressed, and this decompression reduces the pressure of the valve film. The valve portions are separated to form a deaeration passage. The air inside the bag is deaerated through the suction port of the case. When the deaeration is completed, the inside of the bag becomes negative pressure, so the two valve films come into close contact with each other and keep the bag inside airtight. [0009]
  • the check valve device has a simple configuration force due to the thin hard plastic case and the flat tube-shaped soft plastic valve film.
  • the valve film is in a state where the external force is protected by a hard case, can fully function as a check valve, and requires a lock mechanism and sealing fastener to be sealed separately after degassing In addition, the air sucked when the suction is stopped does not flow back into the bag. Further, the suction hose is simply in contact with the exhaust port of the case from the start to the end of the deaeration, and the operation of sealing is very simple, coupled with the fact that the sealing operation is unnecessary. Furthermore, since the case of the air intake port located inside the bag is hard, a deaeration passage can be reliably secured without the risk of being clogged by the pressure of the stored item or the film force of the bag.
  • the case where the material strength of the case is “hard” means that the case is hard enough to secure a deaeration space inside the case when the suction hose comes into contact.
  • valve film “soft” means that it is so soft that it can be adhered and separated by the difference in air pressure.
  • a rib for preventing the valve film from being sucked and drawn into the exhaust port is formed on the inner surface side of the exhaust port of the case.
  • the case is formed by airtightly fitting an outer case with an exhaust port and an inner case with an intake port, and one end of the valve film is in close contact with the inner case and communicates with the intake port.
  • the valve portion other than the one end may be in close contact with the space inside the outer case and can be separated.
  • the case which is a plastic molded product, is preferably divided, and can be easily formed into a shape.
  • a small hole for communicating the inside of the case and the outside of the bag is formed on the surface on the exhaust port side of the case. External air is sucked into the case from the small hole during the deaeration, but when the air from the valve film is finished (when the air inside the bag is exhausted), the air from the small hole is momentum. Will be sprayed onto the valve film, and the pressure will be used to hold down the valve film. As a result, the close contact of the valve film is assisted, and it is possible to reliably prevent the valve film from being separated even in the unlikely event.
  • This small hole also functions as a bypass that draws outside air into the case little by little during deaeration. That is, the motor is prevented from overheating when the vacuum cleaner is operated even after the degassing is completed, and the suction hose is This prevents the tip of the air from sucking and sticking to the exhaust port.
  • a sealed plastic bag according to the present invention includes the check valve device. This plastic bag has all the advantages of the check valve device.
  • FIG. 1 is a plan view showing a hermetic type plastic bag provided with a check valve device according to the present invention.
  • FIG. 2 shows a basic structure of a check valve device according to the present invention, in which (A) is a plan view and (B) is a cross-sectional view.
  • FIG. 3 is a cross-sectional view showing when deaeration is performed by the check valve device shown in FIG. 2.
  • FIG. 4 shows an embodiment of a check valve device according to the present invention, (A) is a top view, (B) is a plan view,
  • C) is an AA cross-sectional view
  • D is a BB cross-sectional view
  • FIG. 5 shows an outer case constituting one embodiment of the check valve device, where (A) is a top view, (B) is a plan view, (C) is a CC cross-sectional view, and (D) is D—D. It is sectional drawing.
  • FIG. 6 An inner case constituting one embodiment of the check valve device is shown, (A) is a top view, (B) is a plan view, (C) is a cross-sectional view taken along EE, and (D) is F. — F sectional view.
  • FIG. 7 shows a valve film constituting one embodiment of the check valve device, where (A) is a plan view and (B) is a GG sectional view.
  • FIG. 8 shows another basic structure of the check valve device according to the present invention, (A) is a plan view, (B) is a sectional view showing when degassing, and (C) shows the end of degassing. It is sectional drawing.
  • Figure 1 shows a sealed plastic bag 1 for compressing and storing futons and clothing.
  • This bag 1 is made by welding lb, lc and lower side Id on both sides of the plastic film constituting the front and back surfaces, and attaching fastener 5 and slider 6 for closing fastener 5 to the inside with upper side la opened. It is.
  • fastener 5 can be fitted to the base material and Z can be released.
  • Conventional force with projections is well known, and the inside of the bag 1 is kept sealed by fitting the recesses and projections.
  • the configuration and function of the closing slider 6 are also well known.
  • the sealing of the bag 1 is not limited to the provision of the fastener 5, but may be a type in which the upper side la is welded after the article is stored.
  • this type of hermetically-sealed compression storage bag reduces the bulk of storage items such as futons and improves the efficiency of transportation and storage, and has functions such as moisture proofing, antifouling, and mold prevention. Have.
  • the bag 1 has a binding effect of tightening the storage items.
  • a check valve device 10 is attached to an arbitrary portion of the bag 1 by cutting out the plastic film 2 constituting the surface into a circular shape.
  • the check valve device 10 will be described.
  • Fig. 2 shows the basic structure of the check valve device 10.
  • the check valve device 10 includes a thin hard plastic case 11 and a flat tube-like soft plastic valve film 15 accommodated in the case 11.
  • the case 11 has an intake port 12 on one end surface and an exhaust port 13 on the surface. This case 11 is bonded or welded to the inner surface of the front film 2 with the exhaust port 13 communicating from the front film 2 of the bag 1 to the outside, and the intake port 12 communicates with the inside of the bag 1.
  • valve film 15 One end of the valve film 15 is bonded to the air inlet 12 of the case 11, and the other open end is a free end (valve).
  • the free ends (valves) are in close contact with each other inside the case 11 and can be separated from each other.
  • the tip of the suction hose 60 of the vacuum cleaner is connected to the exhaust port 13 of the case 11. Apply suction around to start suction. Then, the inside of the case 11 is depressurized, the free end (valve portion) of the valve film 15 is separated by this depressurization, and the deaeration passage 16 is formed. The air inside the bag 1 is also degassed through the deaeration passage 16 as well as the suction port 12 (one end opening of the valve film 15) of the case 11.
  • a check valve device 20 is configured by dividing a case 21 into an outer case 22 having an exhaust port 23 and an inner case 32 having an intake port 33, and is a flat tube-like valve. One end of film 41 is covered with inner case 32 and sandwiched between outer case 22 and film 41.
  • the outer case 22 has an exhaust port 23 and one end opening 24, and three ribs 25 are formed on the inner surface.
  • the central rib 25 is formed so as to cross the exhaust port 23.
  • the inner case 32 has an intake port 33 and a flat deaeration passage 34, and a portion where the deaeration passage 34 is formed is inserted into the opening 24 of the outer case 22. It can be mated.
  • the valve film 41 is functionally divided into a fixed portion 41a and a valve portion 41b that is a free end.
  • the fixed portion 41a is an inner portion that matches the outer dimension of the inner case 32. It has a circumferential dimension.
  • the upper side 42a and the lower side 42b in FIG. 7 of the valve film 41 are opened while being cut, and the side sides 42c and 42c are fused (fixed) to form a flat cylindrical shape.
  • the valve portions 4 lb of the valve film 41 are partially welded to each other (this welded portion is indicated by a symbol a).
  • the check valve device 20 is assembled in the state shown in FIG. First, the fixing portion 41a of the valve film 41 is put on the portion where the deaeration passage 34 of the inner case 32 is formed, and the valve film 41 and the inner case 32 are inserted into the opening 24 of the outer case 22. Thus, the outer case 22 and the inner case 32 are fitted and integrated together through the fixing portion 41a of the valve film 41 in an airtight manner.
  • the deaeration operation by the check valve device 20 is the same as that of the check valve device 10 described as the basic structure.
  • the path through which the air inside the bag 1 is degassed during degassing is indicated by the arrows in FIG.
  • the valve part 41b of the valve film 41 is separated to form a deaeration passage 43 (see FIG. 4C).
  • the effects of the check valve device 20 are as follows. First of all, the simple structural force of the thin hard plastic case 21 and the flat tube-shaped soft plastic valve film 41 is also achieved. The valve film 41 is in a state where the external force is also protected by the case 21, and the check valve This function can be fully demonstrated, and there is no need for a separate locking mechanism or sealing fastener after degassing, and there is no risk of air sucked back into the bag 1 when suction is stopped. .
  • the suction hose 60 is simply in contact with the exhaust port 23 of the case 21 from the start to the end of the degassing, and the operation of sealing is extremely simple, because the sealing operation is unnecessary. It is.
  • the air inlet 33 located inside the bag 1 has a rigid case 21, the degassing passage 43 is secured without any risk of being blocked by the pressure from the film 2 of the bag 1. be able to.
  • valve portions 41b and 41b of the valve films 41 and 41 can be prevented from being sucked to the exhaust port 23, and deaeration can be performed. Defects are reliably prevented from occurring. Further, since the valve portion 41b of the valve film 41 is partially welded (welded portion a), it is possible to prevent close leakage and close contact at the end of degassing.
  • case 21 is divided into an outer case 22 having an exhaust port 23 and an inner case 32 having an intake port 33, the case 21 can be easily formed into a preferred shape. wear.
  • Fig. 8 shows another basic structure of the check valve device.
  • This check valve device 10 basicically has the same structural force as the check valve device 10 shown in FIG. 2, and the inside of the case 11 and the outside of the bag 1 are connected to the surface on the exhaust port 13 side of the case 11. A small hole 14 is formed.
  • the small hole 14 is an upper surface of the case 11 and is detached from the outer peripheral portion of the suction hose 60 applied to the air vent 13 and covered with the front film 2 of the bag 1. It is formed in a place that is not broken (inside the opening 2a of the front film 2). Note that the symbol b shown in FIG.
  • the small hole 14 functions as a bypass for drawing outside air into the case 11 little by little during deaeration (see FIG. 8B). That is, the motor is prevented from overheating when the vacuum cleaner is operated even after the deaeration is finished, and the suction force V is attached to the tip exhaust port 13 of the suction hose 60 when the deaeration is finished, thereby preventing the motor from being separated. [0040] Then, when the deaeration is completed and the inflow of air from the air inlet 12 is stopped, the air from the small hole 14 is also sucked into the case 11 suddenly, and the valve film 15 is pressed by the pressure. (See Fig. 8 (C)). As a result, the close contact of the valve film 15 is assisted, and the free end (valve part) of the valve film 15 is surely prevented from being separated even in the unlikely event.
  • check valve device and the sealed plastic bag according to the present invention can be variously modified within the scope of the gist of the present invention.
  • the configuration and size of the bag may be arbitrary.
  • the detailed configuration and shape of the check valve device case and valve film are also arbitrary.
  • a rib may be provided on the outer side of the case so that the stored item closes the intake port at the time of deaeration so as not to cause a bad deaeration.
  • a plurality of intake ports may be provided, and a plurality of valve films may be provided corresponding to the respective intake ports.
  • a plurality of valve films may be provided corresponding to the respective intake ports.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Bag Frames (AREA)

Abstract

Dispositif de clapet de retenue (10) installé sur une partie d’un film plastique (2) formant un sac plastique de type fermé (1), permettant de purger l’air à l’intérieur du sac (1) par le contact de celui-ci avec la partie de pointe d’un tuyau d’aspiration (60), de commencer à aspirer, et de maintenir l’intérieur du sac (1) étanche à l’air en arrêtant d’aspirer. Le dispositif de clapet de retenue (10) est constitué d’un logement mince en plastique de type dur (11) et d’une pellicule de clapet en plastique souple en forme de tube plat (15) rangée dans le logement (11). Le logement (11) est constitué d’un orifice d’admission (12) et d’un orifice de refoulement (13), l’orifice d’admission (12) communique avec l’intérieur du sac (1) et l’orifice de refoulement (13) communique avec l’extérieur du sac (1). La pellicule de clapet (15) est fixée au logement (11), l'une de ses extrémités communiquant avec l’orifice d’admission (12), et sa partie de clapet, autre que ladite extrémité étant installée à la surface interne du logement (11) et séparée de celle-ci. Lorsque l’air est purgé, la partie de clapet de la pellicule de clapet (15) est séparée de la surface interne du logement (11) par une baisse de pression à l’intérieur du logement (11) et installée à la surface interne du logement une fois la purge d’air terminée.
PCT/JP2004/018399 2004-12-09 2004-12-09 Dispositif de clapet de retenue et sac plastique WO2006061905A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/018399 WO2006061905A1 (fr) 2004-12-09 2004-12-09 Dispositif de clapet de retenue et sac plastique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/018399 WO2006061905A1 (fr) 2004-12-09 2004-12-09 Dispositif de clapet de retenue et sac plastique

Publications (1)

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WO2006061905A1 true WO2006061905A1 (fr) 2006-06-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120648A1 (it) * 2012-04-18 2013-10-19 Goglio Spa Sacco per il contenimento di prodotti liquidi degasanti, in particolare lievito

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09500305A (ja) * 1993-07-20 1997-01-14 バクスター・インターナショナル・インク 多機能制御弁及び方法
JP2004210295A (ja) * 2002-12-27 2004-07-29 Kashiwara Seitai:Kk 脱気弁及び脱気袋及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09500305A (ja) * 1993-07-20 1997-01-14 バクスター・インターナショナル・インク 多機能制御弁及び方法
JP2004210295A (ja) * 2002-12-27 2004-07-29 Kashiwara Seitai:Kk 脱気弁及び脱気袋及びその製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120648A1 (it) * 2012-04-18 2013-10-19 Goglio Spa Sacco per il contenimento di prodotti liquidi degasanti, in particolare lievito
EP2653406A1 (fr) * 2012-04-18 2013-10-23 Goglio S.p.A. Sac pour contenir des produits liquides produisant du gaz, notamment de la levure

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