WO2006061905A1 - Check valve device and plastic bag - Google Patents

Check valve device and plastic bag 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
French (fr)
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/en
Publication of WO2006061905A1 publication Critical patent/WO2006061905A1/en

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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.

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  • 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

A check valve device (10) installed on a part of a plastic film (2) forming a closed type plastic bag (1), allowing an air inside the bag (1) to be bled by the contact thereof with the tip part of a suction hose (60) and starting sucking, and holding, airtight, the inside of the bag (1) by stopping the sucking. The check valve device (10) comprises a thin type hard plastic case (11) and a flat tube-like soft plastic valve film (15) stored in the case (11). The case (11) comprises an intake port (12) and an exhaust port (13), and the intake port (12) communicates with the inside of the bag (1) and the exhaust port (13) communicates with the outside of the bag (1). The valve film (15) is fixed to the case (11) with its one end communicating with the intake port (12), and the valve part thereof other than the one end is fitted to and separated from the inner surface of the case (11). In bleeding the air, the valve part of the valve film (15) is separated from the inner surface of the case (11) by a reduction in pressure inside the case (11) and fitted to the inner surface of the case after the bleeding is completed.

Description

明 細 書  Specification
逆止弁装置及びプラスチック製袋  Check valve device and plastic bag
技術分野  Technical field
[0001] 本発明は、逆止弁装置、特に、布団や衣類などを圧縮収納するための密閉タイプ のプラスチック製袋から内部空気を脱気するための逆止弁装置、及び、該逆止弁装 置を備えたプラスチック製袋に関する。  [0001] 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.
背景技術  Background art
[0002] 従来より、布団や衣類など嵩高いものを圧縮してコンパクトに収納するための密閉 タイプのプラスチック製袋が種々提供されている。この種のプラスチック製袋は、内部 の空気を脱気するために、袋を構成するプラスチックフィルムに袋の内外を連通させ る逆止弁が取り付けられている。逆止弁部分に掃除機のホースの先端部を当接させ 、逆止弁力 袋内部の空気を吸引する。  Conventionally, various types of hermetically sealed plastic bags for compressing and storing bulky items such as futons and clothes in a compact manner have been provided. This type of plastic bag is equipped with a check valve that allows the inside and outside of the bag to communicate with the plastic film that constitutes the bag in order to vent the air inside. The tip of the vacuum cleaner hose is brought into contact with the check valve, and the air inside the check valve force bag is sucked.
[0003] 従来、圧縮袋用の逆止弁装置としては、特許文献 1に記載されているように、プラス チック成形品からなる弁体及び可動蓋を備え、可動蓋の移動に基づ 、てスプリング のばね力を利用して弁体を開閉させるものが提案されている。しかし、この逆止弁装 置では、多数の部品を複雑に組み合わせる必要があり、また、装置が全体的に嵩高 くなつてしまう問題点を有している。さらに、脱気後に可動蓋が動作しないように可動 蓋をロックする必要があり（脱気開始時にはロックを解除する必要もある）、操作が煩 雑である。  Conventionally, as described in Patent Document 1, 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.
[0004] また、特許文献 2にも、前記文献 1と同様に、プラスチック成形品からなる弁体を備 えた逆止弁装置が提案されている。しかし、この逆止弁装置においても、構造的に複 雑であり、嵩高ぐ脱気後に弁体力 の空気の流入を防止するためにキャップを取り 付けて弁体をロックする必要があり、操作が煩雑である。  [0004] Also, Patent Document 2 proposes a check valve device including a valve body made of a plastic molded product, as in Document 1. However, 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.
[0005] 他の逆止弁装置としては、特許文献 3に記載のように、吸引通路内に 2枚のプラス チックフィルムを重ね合わせて袋の内外の気圧差に基づいて逆止弁として機能させ る脱気弁が提案されている。しかし、この脱気弁では、脱気終了後に掃除機の動作 を停止させると吸い込んだ空気の一部が袋に逆流し、不清潔であるという問題点を 有している。し力も、吸引通路の出口側に封鎖ファスナを別途設けて脱気終了後に 該封鎖ファスナを閉じる必要がある。また、この脱気弁では掃除機の吸引ホースを吸 引通路に挿入したり、脱気操作後にファスナを閉じたりするため、やはり操作が煩雑 である。 [0005] As another check valve device, as described in Patent Document 3, two plastic films are stacked in a suction passage to function as a check valve based on the pressure difference between the inside and outside of the bag. A deaeration valve has been proposed. However, with this deaeration valve, if the operation of the vacuum cleaner is stopped after deaeration, a part of the sucked air flows back into the bag, which is unclean. Have. In addition, it is necessary to separately provide a sealing fastener on the outlet side of the suction passage and close the sealing fastener after deaeration is completed. In addition, this deaeration valve is complicated because the suction hose of the vacuum cleaner is inserted into the suction passage and the fastener is closed after the deaeration operation.
特許文献 1：特開 2003— 34379号公報  Patent Document 1: Japanese Patent Laid-Open No. 2003-34379
特許文献 2：米国特許第 5931189号明細書  Patent Document 2: US Pat. No. 5,931,189
特許文献 3：実用新案登録第 3025235号公報  Patent Document 3: Utility Model Registration No. 3025235
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0006] そこで、本発明の目的は、嵩高くなくて簡単な構成力もなり、かつ、簡単な操作で脱 気を行うことができ、脱気終了後の気密性の保持が確実な逆止弁装置及びプラスチ ック製袋を提供することにある。 [0006] Therefore, 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.
課題を解決するための手段  Means for solving the problem
[0007] 以上の目的を達成するため、本発明に係る逆止弁装置は、密閉タイプのプラスチッ ク製袋を構成するプラスチックフィルムの一部に設置され、吸弓 Iホースの先端部が当 接して吸引を開始することにより前記袋の内部空気を脱気させ、吸引の停止に伴つ て前記袋の内部を気密に保持する逆止弁装置であって、薄型の硬質プラスチック製 ケースと、該ケースに収容された扁平チューブ状の軟質プラスチック製弁フィルムと からなり、前記ケースは吸気口と排気口とを有し、吸気口は前記袋の内部に連通し、 排気口は前記袋の外部に連通し、前記弁フィルムは一端が前記ケースの吸気口に 連通した状態でケースに固着されており、かつ、該一端以外の弁部が前記ケースの 内部において密着 z離間自在であり、前記弁フィルムの弁部は脱気時にはケース内 部の減圧によって離間し、脱気終了後は密着することを特徴とする。 [0007] In order to achieve the above object, the check valve device according to the present invention 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.
[0008] 本発明に係る逆止弁装置は、掃除機の吸引ホースの先端部をケースの排気口の 周囲に当てて吸引を開始すると、まず、ケース内部が減圧され、この減圧によって弁 フィルムの弁部が離間し、脱気通路が形成される。袋内部の空気はケースの吸引口 力 この脱気通路を通じて脱気される。脱気が終了すると袋内部は負圧になるため、 2枚の弁フィルムが密着し、袋内部を気密に保持する。 [0009] 本発明に係る逆止弁装置は、薄型の硬質プラスチック製ケースと扁平チューブ状 の軟質プラスチック製弁フィルムと 、う簡単な構成力もなる。弁フィルムは硬質のケー スによって外部力 保護された状態にあり、逆止弁としての機能を十分に発揮するこ とができ、脱気終了後に別途封止するためのロック機構や封鎖ファスナを必要とせず 、また、吸引停止時に吸引した空気が袋内に逆流することもない。また、吸引ホース は脱気の開始から終了まで単にケースの排気口に当接させているだけでよぐ前記 封止作業が不要なことと相俟って操作が極めて簡単である。さらに、袋の内部に位置 する吸気口はケースが硬質であることから、収納物や袋のフィルム力 の圧力で塞が つてしまうおそれはなぐ脱気通路を確実に確保することができる。 In the check valve device according to the present invention, 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 according to the present invention 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.
[0010] 本発明において、ケースの材料力 '硬質"であるとは、吸引ホースの当接などに際し てケースの内部に脱気用の空間を確保できる程度に硬質であることを意味する。また In the present invention, 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.
、弁フィルムの材料力 '軟質"であるとは、空気圧の差によって密着 Z離間自在である 程度に軟質であることを意味する。 The material strength of the valve film “soft” means that it is so soft that it can be adhered and separated by the difference in air pressure.
[0011] 本発明に係る逆止弁装置においては、ケースの排気口の内面側に、弁フィルムが 排気口に吸 、寄せられるのを防止するリブが形成されて 、ることが好ま 、。  In the check valve device according to the present invention, it is preferable that 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.
[0012] また、ケースは排気口を備えた外側ケースと吸気口を備えた内側ケースとが気密に 嵌合されてなり、弁フィルムはその一端が内側ケースに密着して吸気口に連通し、該 一端以外の弁部が外側ケース内の空間にお 、て密着 Z離間自在であってもよ 、。 プラスチックの成形品であるケースは分割したほうが好ま 、形状に容易に成形する ことができる。 [0012] Further, 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.
[0013] また、ケースの排気口側の面にケースの内部と袋の外部とを連通する***が形成 されて 、ることが好まし 、。***からは脱気中に外部空気が補助的にケース内に吸 引されているが、弁フィルムからの吸気が終了したとき (袋内部の空気がなくなつたと き）、***からの吸気が勢いを増して弁フィルムに吹き付け、その圧力で弁フィルムを 押さえ込むことになる。これにて、弁フィルムの密着が助勢され、弁フィルムが万一で も離間したままになることを確実に防止することができる。また、この***は脱気中に 外部の空気を少量ずつケースに引き入れるバイパスとして機能する。即ち、脱気終 了後も掃除機を動作させた場合のモータの過熱を防止し、脱気終了時に吸引ホース の先端が排気口部分に吸 、付 、て離れなくなるのを防止する。 [0013] In addition, it is preferable that 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.
[0014] 本発明に係る密閉タイプのプラスチック製袋は、前記逆止弁装置を備えたことを特 徴とする。このプラスチック製袋は前記逆止弁装置の利点を全て備えて 、る。  [0014] 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.
図面の簡単な説明  Brief Description of Drawings
[0015] [図 1]本発明に係る逆止弁装置を備えた密閉タイプのプラスチック製袋を示す平面図 である。  FIG. 1 is a plan view showing a hermetic type plastic bag provided with a check valve device according to the present invention.
[図 2]本発明に係る逆止弁装置の基本的構造を示し、（A)は平面図、（B)は断面図 である。  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.
[図 3]図 2に示した逆止弁装置による脱気時を示す断面図である。  FIG. 3 is a cross-sectional view showing when deaeration is performed by the check valve device shown in FIG. 2.
[図 4]本発明に係る逆止弁装置の一実施例を示し、（A)は上面図、（B)は平面図、 ( 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)は A-A断面図、（D)は B-B断面図である。 C) is an AA cross-sectional view, and (D) is a BB cross-sectional view.
[図 5]前記逆止弁装置の一実施例を構成する外側ケースを示し、（A)は上面図、（B) は平面図、（C)は C C断面図、（D)は D— D断面図である。  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.
[図 6]前記逆止弁装置の一実施例を構成する内側ケースを示し、（A)は上面図、（B) は平面図、（C)は E— E断面図、（D)は F— F断面図である。  [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.
[図 7]前記逆止弁装置の一実施例を構成する弁フィルムを示し、（A)は平面図、（B) は G— G断面図である。  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.
[図 8]本発明に係る逆止弁装置の他の基本的構造を示し、（A)は平面図、（B)は脱 気時を示す断面図、（C)は脱気終了時を示す断面図である。  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.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0016] 以下、本発明に係る逆止弁装置及びプラスチック製袋の実施例について、添付図 面を参照して説明する。 Hereinafter, embodiments of a check valve device and a plastic bag according to the present invention will be described with reference to the accompanying drawings.
[0017] (密閉タイプの圧縮収納袋、図 1参照） [0017] (Sealed compression bag, see Fig. 1)
図 1に、布団や衣類などを圧縮して収納しておくための密閉タイプのプラスチック製 袋 1を示す。この袋 1は表裏面を構成するプラスチックフィルムの両側辺 lb, lc及び 下辺 Idを溶着し、上辺 laを開口状態としてその内側にファスナ 5及び該ファスナ 5を 閉止するためのスライダ 6を取り付けたものである。  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.
[0018] ファスナ 5はその詳細を図示しないが、ベース材に互いに嵌合 Z解除可能な凹部と 凸部を形成した従来力 周知のものであり、凹部と凸部とが嵌合することにより袋 1の 内部を密閉状態に保持する。また、閉止用スライダ 6の構成、機能も周知である。 [0018] Although the details of the fastener 5 are not shown in the drawings, the 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.
[0019] なお、袋 1の密閉性を確保するには、前記ファスナ 5を設けることに限らず、物品の 収納後に上辺 laを溶着してしまうタイプであってもよい。 [0019] Note that 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.
[0020] また、この種の密閉タイプの圧縮収納袋は、布団などの収納物の嵩を縮小して輸 送や保管の効率ィ匕を目的とし、防湿、防汚、防カビなどの機能を有している。さらに、 袋 1によって収納物を締め付ける結束効果も有して 、る。 [0020] In addition, 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. In addition, the bag 1 has a binding effect of tightening the storage items.
[0021] ところで、前記袋 1の任意の部分には、表面を構成するプラスチックフィルム 2を円 形状に切り抜いて逆止弁装置 10が取り付けられている。以下、逆止弁装置 10につ いて説明する。 Incidentally, 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. Hereinafter, the check valve device 10 will be described.
[0022] (逆止弁装置の基本的構造、図 2及び図 3参照）  [0022] (Basic structure of check valve device, see FIGS. 2 and 3)
図 2に逆止弁装置 10の基本的構造を示す。この逆止弁装置 10は、薄型の硬質プ ラスチック製ケース 11と、該ケース 11に収容された扁平チューブ状の軟質プラスチッ ク製弁フィルム 15とで構成されて 、る。  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.
[0023] ケース 11は、一端面に吸気口 12を有し、表面に排気口 13を有している。このケー ス 11は排気口 13が前記袋 1の表側フィルム 2から外部に連通する状態で表側フィル ム 2の内側面に接着ないし溶着され、吸気口 12は袋 1の内部に連通している。 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.
[0024] 弁フィルム 15は、開口した一端部がケース 11の吸気口 12に接着され、開口した他 端部は自由端 (弁部）とされて 、る。この自由端 (弁部）はケース 11の内部において 互 、に密着 Z離間自在である。 [0024] 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.
[0025] 以上の構成力もなる逆止弁装置 10において、袋 1の脱気を行うには、図 3に示すよ うに、まず、掃除機の吸引ホース 60の先端部をケース 11の排気口 13の周囲に当て て吸引を開始する。すると、ケース 11の内部が減圧され、この減圧によって弁フィル ム 15の自由端 (弁部）が離間し、脱気通路 16が形成される。袋 1の内部の空気はケ ース 11の吸気口 12 (弁フィルム 15の一端開口部）力も脱気通路 16を通じて脱気さ れる。  [0025] In the check valve device 10 having the above constituent force, in order to deaerate the bag 1, as shown in Fig. 3, first, 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.
[0026] 脱気が終了すると袋 1の内部は負圧になるため、弁フィルム 15の自由端 (弁部）が 密着し、袋 1内部を気密に保持する。 [0027] (逆止弁装置の一実施例、図 4一図 7参照） [0026] Since the inside of the bag 1 becomes negative pressure after the deaeration is completed, the free end (valve portion) of the valve film 15 is brought into close contact, and the inside of the bag 1 is kept airtight. [0027] (See one embodiment of check valve device, Fig. 4 and Fig. 7)
一実施例である逆止弁装置 20は、ケース 21を、排気口 23を備えた外側ケース 22 と吸気口 33を備えた内側ケース 32とに 2分割した状態で構成し、扁平チューブ状の 弁フィルム 41をその一端部を内側ケース 32に被せて外側ケース 22とで挟着したもの である。  A check valve device 20 according to an embodiment 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.
[0028] 外側ケース 22は、図 5に示すように、排気口 23と一端開口部 24とを有し、内側面に は 3本のリブ 25が形成されて 、る。中央のリブ 25は排気口 23を横切るように形成さ れている。  As shown in FIG. 5, 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.
[0029] 内側ケース 32は、図 6に示すように、吸気口 33と扁平な脱気通路 34とを有し、脱気 通路 34を形成した部分が前記外側ケース 22の開口部 24に挿入'嵌合可能とされて いる。  [0029] As shown in FIG. 6, 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.
[0030] 弁フィルム 41は、図 7に示すように、機能上、固定部 41aと自由端である弁部 41bと に分かれており、固定部 41aは前記内側ケース 32の外周寸法に一致した内周寸法 を有している。弁フィルム 41の図 7における上辺 42a及び下辺 42bはカットされたまま で開口しており、側辺 42c, 42cは溶断（固着）され、扁平な筒状とされている。また、 弁フィルム 41の弁部 4 lbは互 ヽに部分的に溶着 (この溶着部は符号 aで示す)されて いる。  [0030] As shown in FIG. 7, 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. Further, 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).
[0031] 逆止弁装置 20は、図 4に示す状態に組み立てられる。まず、弁フィルム 41の固定 部 41aを内側ケース 32の脱気通路 34を形成した部分に被せ、弁フィルム 41と内側 ケース 32とを外側ケース 22の開口部 24に挿入する。これにて、外側ケース 22と内側 ケース 32とが弁フィルム 41の固定部 41aを介して気密に嵌合'一体ィ匕される。  [0031] 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.
[0032] この逆止弁装置 20による脱気動作は、前記基本的構造として説明した逆止弁装置 10と同様である。脱気時に前記袋 1の内部の空気が脱気されていく経路を図 4の矢 印で示す。脱気時において、弁フィルム 41の弁部 41bは離間して脱気通路 43を形 成する（図 4 (C)参照)。  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. At the time of deaeration, the valve part 41b of the valve film 41 is separated to form a deaeration passage 43 (see FIG. 4C).
[0033] 前記逆止弁装置 20による効果は以下のとおりである。まず、薄型の硬質プラスチッ ク製ケース 21と扁平チューブ状の軟質プラスチック製弁フィルム 41という簡単な構成 力もなる。弁フィルム 41はケース 21によって外部力も保護された状態にあり、逆止弁 としての機能を十分に発揮することができ、脱気終了後に別途封止するためのロック 機構や封鎖ファスナを必要とせず、吸引停止時に吸引された空気が袋 1内に逆流す るおそれもない。 [0033] 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. .
[0034] さらに、吸引ホース 60は脱気の開始から終了まで単にケース 21の排気口 23に当 接させているだけでよぐ前記封止作業が不要なことと相俟って操作が極めて簡単で ある。さらに、袋 1の内部に位置する吸気口 33はケース 21が硬質であることから、収 納物ゃ袋 1のフィルム 2からの圧力で塞がってしまうおそれはなぐ脱気通路 43を確 実に確保することができる。  [0034] Further, 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. In addition, since 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.
[0035] また、ケース 21の排気口 23の内面側にリブ 25が形成されているため、弁フィルム 4 1, 41の弁部 41b, 41bが排気口 23に吸い寄せられるのを防止でき、脱気不良 '不 能が生じることが確実に防止される。さらに、弁フィルム 41の弁部 41bは部分的に溶 着 (溶着部 a)されているため、脱気終了時に密着しやすぐ密閉漏れを防止すること ができる。  [0035] Further, since the rib 25 is formed on the inner surface side of the exhaust port 23 of the case 21, the 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.
[0036] また、ケース 21は排気口 23を備えた外側ケース 22と吸気口 33を備えた内側ケー ス 32とに 2分割されているため、ケース 21を好ましい形状に容易に成形することがで きる。  [0036] Further, since the 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.
[0037] (逆止弁装置の基本的構造の他の例、図 8参照）  [0037] (Another example of the basic structure of the check valve device, see FIG. 8)
図 8に、逆止弁装置の他の基本的構造を示す。この逆止弁装置 10'は図 2に示し た逆止弁装置 10と基本的には同様の構造力もなり、ケース 11の排気口 13側の面に ケース 11の内部と袋 1の外部とを連通する*** 14を形成したものである。  Fig. 8 shows another basic structure of the check valve device. This check valve device 10 'basically 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.
[0038] *** 14は、図 8 (A)に示すように、ケース 11の上面であって、 気口 13に当てた 吸引ホース 60の外周部から外れ、かつ、袋 1の表フィルム 2に覆われない箇所（表フ イルム 2の開口 2a内）に形成されている。なお、図 8 (A)に示す符号 bは表フィルム 2と ケース 11との溶着部である。  [0038] As shown in FIG. 8 (A), 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.
[0039] 前記*** 14は、まず、脱気中に外部の空気を少量ずつケース 11に引き入れるバ ィパスとして機能する（図 8 (B)参照)。即ち、脱気終了後も掃除機を動作させた場合 のモータの過熱を防止し、脱気終了時に吸引ホース 60の先端力排気口 13部分に吸 Vヽ付 、て離れなくなるのを防止する。 [0040] そして、脱気が終了して吸気口 12からの空気の流入が停止すると、*** 14力も外 部の空気が急激にケース 11の内部に吸い込まれ、その圧力で弁フィルム 15を押さ え込むことになる（図 8 (C)参照）。これにて、弁フィルム 15の密着が助勢され、弁フィ ルム 15の自由端 (弁部）が万一でも離間したままになることを確実に防止する。 [0039] 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.
[0041] (他の実施例）  [0041] (Other Examples)
なお、本発明に係る逆止弁装置及び密閉タイプのプラスチック製袋は前記実施例 に限定するものではなぐその要旨の範囲内で種々に変更できる。  The 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.
[0042] 例えば、袋の構成、サイズゃ密閉するための手段などは任意である。また、逆止弁 装置のケース、弁フィルムの細部の構成、形状も任意である。また、脱気時に収納物 が吸気口を塞 、で脱気不良'不能を生じな 、ように、ケースの外側にリブを設けても よい。  [0042] For example, 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. Further, 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.
[0043] 特に、吸気口を複数箇所に設け、複数の弁フィルムをそれぞれの吸気口に対応し て設けてもよい。例えば、吸気口をケースの両側にも設けることが考えられる。  [0043] In particular, a plurality of intake ports may be provided, and a plurality of valve films may be provided corresponding to the respective intake ports. For example, it is conceivable to provide intake ports on both sides of the case.

Claims

請求の範囲 The scope of the claims
[1] 密閉タイプのプラスチック製袋を構成するプラスチックフィルムの一部に設置され、 吸引ホースの先端部が当接して吸引を開始することにより前記袋の内部空気を脱気 させ、吸弓 Iの停止に伴って前記袋の内部を気密に保持する逆止弁装置であって、 薄型の硬質プラスチック製ケースと、該ケースに収容された扁平チューブ状の軟質 プラスチック製弁フィルムとからなり、  [1] It is installed on a part of the plastic film that constitutes a sealed plastic bag, and the suction hose tip comes into contact with it to start suction, thereby degassing the air inside the bag and A check valve device that airtightly holds the inside of the bag as it stops, comprising a thin hard plastic case and a flat tube-like soft plastic valve film housed in the case,
前記ケースは吸気口と排気口とを有し、吸気口は前記袋の内部に連通し、排気口 は前記袋の外部に連通し、  The case has an intake port and an exhaust port, the intake port communicates with the inside of the bag, the exhaust port communicates with the outside of the bag,
前記弁フィルムは一端が前記ケースの吸気口に連通した状態でケースに固着され ており、かつ、該一端以外の弁部が前記ケースの内部において密着 Z離間自在で あり、  The valve film is fixed to the case in a state where one end communicates with the intake port of the case, and the valve portion other than the one end is in close contact with the inside of the case and can be separated from the Z.
前記弁フィルムの弁部は脱気時にはケース内部の減圧によって離間し、脱気終了 後は密着すること、  The valve part of the valve film is separated by depressurization inside the case at the time of deaeration, and is adhered after the deaeration is finished
を特徴とする逆止弁装置。  A check valve device.
[2] 前記ケースの排気口の内面側に、前記弁フィルムが排気口に吸い寄せられるのを 防止するリブが形成されていることを特徴とする請求の範囲第 1項に記載の逆止弁装 置。  [2] The check valve device according to claim 1, wherein a rib for preventing the valve film from being attracted to the exhaust port is formed on an inner surface side of the exhaust port of the case. Place.
[3] 前記ケースは排気口を備えた外側ケースと吸気口を備えた内側ケースとが気密に 嵌合されてなり、前記弁フィルムはその一端が内側ケースに密着して吸気口に連通 し、該一端以外の弁部が外側ケース内の空間において密着 Z離間自在であることを 特徴とする請求の範囲第 1項又は第 2項に記載の逆止弁装置。  [3] The case is formed by airtightly fitting an outer case with an exhaust port and an inner case with an intake port, and the valve film is in close contact with the inner case and communicates with the intake port. The check valve device according to claim 1 or 2, wherein the valve portion other than the one end is in close contact with and separated from the space in the outer case.
[4] 前記ケースの前記排気口側の面にケースの内部と袋の外部とを連通する***が形 成されていることを特徴とする請求の範囲第 1項、第 2項又は第 3項に記載の逆止弁 装置。  [4] The first, second, or third aspect of the present invention is characterized in that a small hole that communicates the inside of the case and the outside of the bag is formed in the surface on the exhaust port side of the case. A check valve device according to 1.
[5] 請求の範囲第 1項、第 2項、第 3項又は第 4項に記載の逆止弁装置を備えたことを 特徴とする密閉タイプのプラスチック製袋。  [5] A hermetic plastic bag comprising the check valve device according to claim 1, 2, 3, or 4.
PCT/JP2004/018399 2004-12-09 2004-12-09 Check valve device and plastic bag WO2006061905A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120648A1 (en) * 2012-04-18 2013-10-19 Goglio Spa BAG FOR THE CONTAINMENT OF DEGASANT LIQUID PRODUCTS, IN PARTICULAR YEAST

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09500305A (en) * 1993-07-20 1997-01-14 バクスター・インターナショナル・インク Multifunctional control valve and method
JP2004210295A (en) * 2002-12-27 2004-07-29 Kashiwara Seitai:Kk Deaeration valve, deaeration bag, and method for manufacturing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09500305A (en) * 1993-07-20 1997-01-14 バクスター・インターナショナル・インク Multifunctional control valve and method
JP2004210295A (en) * 2002-12-27 2004-07-29 Kashiwara Seitai:Kk Deaeration valve, deaeration bag, and method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120648A1 (en) * 2012-04-18 2013-10-19 Goglio Spa BAG FOR THE CONTAINMENT OF DEGASANT LIQUID PRODUCTS, IN PARTICULAR YEAST
EP2653406A1 (en) * 2012-04-18 2013-10-23 Goglio S.p.A. Bag for the containing of gas-producing liquid products, in particular yeast

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