CN102548858A - Check valve, sealing bag, and production method for both - Google Patents

Check valve, sealing bag, and production method for both Download PDF

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Publication number
CN102548858A
CN102548858A CN2010800455628A CN201080045562A CN102548858A CN 102548858 A CN102548858 A CN 102548858A CN 2010800455628 A CN2010800455628 A CN 2010800455628A CN 201080045562 A CN201080045562 A CN 201080045562A CN 102548858 A CN102548858 A CN 102548858A
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CN
China
Prior art keywords
thin slice
check valve
boiler check
bag
valve body
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Granted
Application number
CN2010800455628A
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Chinese (zh)
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CN102548858B (en
Inventor
田中干雄
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ASSIST Ltd
Tanaka Ltd
MK Technology KK
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Individual
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Publication of CN102548858A publication Critical patent/CN102548858A/en
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Publication of CN102548858B publication Critical patent/CN102548858B/en
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    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/147—Valve bags, i.e. with valves for filling the filling port being provided in a side wall
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/788—Having expansible port
    • Y10T137/7881—Apertured plate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Abstract

Disclosed is a check valve that has a high certainty of checking effectiveness and in which production costs have been kept as low as possible. Also disclosed is a sealing bag. A check valve (V) is provided with flexible resin base sheets (31, 32) and a plurality of valve body sheets (4). In the valve body sheets (4), at least an upstream valve body sheet (4a) and a downstream valve body sheet (4b) are formed as a set and adhered to one of the base sheets (31). The abovementioned upstream valve body sheet (4a) is adhered to the abovementioned base sheet (31) at the upstream end (4a1), while the downstream end (4a2) is capable of moving in relation to the abovementioned base sheets (31, 32). The abovementioned downstream valve body sheet (4b) is adhered at the downstream end (4b2), while the upstream end (4b1) is capable of moving in relation to the abovementioned base sheets (31, 32). In the abovementioned valve body sheets (4a, 4b), the ends (4a2, 4b1) that are capable of moving in relation to the abovementioned base sheets (31, 32) are capable of coming in contact with the other base sheet (32).

Description

Boiler check valve and sealing bag with and manufacturing approach
Technical field
The present invention relates to boiler check valve, have the sealing bag of this boiler check valve, the manufacturing approach of this boiler check valve and the manufacturing approach of sealing bag.
Background technology
At present, having can be with the article storing portion airtight conditions ground leak free sealing bag in the space of taking in article such as clothes or food.For all gases such as air that will be present in article storing portion are discharged and are kept this state, sealing bag to use a ventilative ground attachment collecting bag and a bag exterior boiler check valve to bag is outside.
This boiler check valve is that air communication is crossed the space through the space of passing through that opens and closes gas when discharging above-mentioned gas, can allow the air communication mistake of a direction, blocks the air-flow of another direction.
Existing example as this boiler check valve has patent documentation 1 described boiler check valve.Shown in figure 10; This boiler check valve 100 is on rectangular plastic sheeting 101; Make filtration membrane 102 shorter than it but that width is identical overlapping, make the upper edge of plastic sheeting 103,104 lower edge and filtration membrane 102 overlapping with each lower edge, and then overlapping with the one side of plastic sheeting 101; After forming flat layered product, its both sides of the edge of caking and lower edge.And; Overlapping 100a of the lower edge of the upper edge of caking filtration membrane 102 and plastic sheeting 103,104; Has peristome 106 in the upper end; One side in lower portion has the filtering surface 107 that is formed by filtration membrane 102, and plastic sheeting 103 between form gas and discharge stream 108.And, form non-return sheet 103a with plastic sheeting 103, its work is set with bag portion 109, the medial surface of medial surface or boiler check valve 103 applies the low viscosity (LV) inert fluid above plastic sheeting 101, keeps the tight joint property of pellicular front.
Patent documentation 1: japanese kokai publication hei 9-112721 communique
But 100 on the boiler check valve of above-mentioned existing example is provided with a non-return sheet 103a, blocks inverted draft through plastic sheeting 101 and the tight joint of non-return sheet 103a.That is, only form above-mentioned tight joint at a place, the non-return effect lacks reliability.Therefore, in the invention of patent documentation 1, must apply the low viscosity (LV) inert fluid in order to improve the non-return effect.
In addition, when above-mentioned technology is improved, must form the structure that does not increase the boiler check valve manufacturing cost as far as possible certainly.
In addition, as the desirable function of boiler check valve, the air pressure that for example as far as possible reduces in the beginning exhaust sealing bag of moment is " initial pressure "." initial pressure " height if this is then might be difficult to begin exhaust, must apply big external force to sealing bag, perhaps remains in the bag owing to gas is difficult to discharge, and sealing bag can expand inexquisitely.
The present invention in view of the above problems, purpose provides the reliability that improves the non-return effect, reduces the little boiler check valve of manufacturing cost and " initial pressure " as far as possible and have the manufacturing approach of sealing bag and this boiler check valve and the sealing bag of this boiler check valve.
Summary of the invention
In order to address the above problem, technical scheme 1 described invention of the present invention is,
A kind of boiler check valve; Overlapping multiple sheet forms; Between above-mentioned thin slice, forming the space that gas is passed through is that air communication is crossed space 3a, crosses space 3a through opening and closing this air communication, can allow from the air communication mistake of inflow entrance to the positive dirction of flow export; Block from the reverse air-flow of flow export to inflow entrance
It is characterized in that having the valve body thin slice 4 of softness of basic thin slice 31,32 and many resin materials of many resin materials,
Above-mentioned many basic thin slices 31,32 are provided with in table back of the body direction in opposite directions,
In above-mentioned many valve body thin slices 4, be that baseline configuration is one group at the upstream side valve body thin slice 4a of upstream side and at least two of the downstream valve body thin slice 4b that is configured in the downstream with the air flow line of positive dirction,
It is all bonding with at least one side's side group plinth thin slice 31 to form each above-mentioned one group valve body thin slice 4a, 4b,
Air flow line when making the above-mentioned relatively discharge of above-mentioned each valve body thin slice 4a, 4b become series connection and both sides do not form overlappingly in table back of the body direction above-mentioned bonding,
The upstream extremity 4a1 side that is bonded in of above-mentioned upstream side valve body thin slice 4a and above-mentioned side's side group plinth thin slice 31 forms, and downstream end 4a2 side can move relative to above-mentioned basic thin slice 31,32,
The above-mentioned downstream end 4b2 side that is bonded in of above-mentioned downstream valve body thin slice 4b forms, and upstream extremity 4b1 side can move relative to above-mentioned side's side group plinth thin slice 31,
Above-mentioned one group valve body thin slice 4a, at least a portion of 4b; With respect to the opposing party's side group plinth thin slice 32, perhaps with respect to the thin slice that above-mentioned a group valve body thin slice 4a, 4b are configured in the opposition side of above-mentioned side's side group plinth thin slice 31 that clips as the valve body thin slice 91 that is different from above-mentioned one group valve body thin slice 4a, 4b; But tight joint and separable; Thereby allow the air communication mistake of positive dirction, block reverse air-flow.
The invention of technical scheme 2 of the present invention provides technical scheme 1 described boiler check valve, it is characterized in that, the air communication with permeability to air that the part formation of above-mentioned side's side group plinth thin slice 31 makes the air-flow of above-mentioned positive dirction pass through in table back of the body direction is crossed the 31a of portion,
Said flow is that the air-flow of positive dirction flows into the above-mentioned inflow entrance in the boiler check valve through the 31a of portion,
Said flow is configured in above-mentioned side's side group plinth thin slice 31, carries on the back the upstream side of direction consistent location at table with the upstream extremity 4a1 of above-mentioned upstream side valve body thin slice 4a through the 31a of portion.
The invention of technical scheme 3 of the present invention provides technical scheme 2 described boiler check valve, it is characterized in that, above-mentioned side's side group plinth thin slice 31 is formed with other part through the 31a of portion by said flow, and this other part has air-tightness.
The invention of technical scheme 4 of the present invention provides technical scheme 1 described boiler check valve, it is characterized in that, the above-mentioned flow export 32b that the air-flow that outer thin slice 32 sides of above-mentioned the opposing party's side have a positive dirction flows out in the boiler check valve,
Above-mentioned flow export 32b forms less than the outer thin slice 31 of above-mentioned side's side through making the outer thin slice 32 of above-mentioned the opposing party's side, perhaps forms through on the outer thin slice 32 of the opposing party's side, opening being set,
Above-mentioned flow export 32b is configured in above-mentioned side's side group plinth thin slice 31, with the downstream end 4a2 of above-mentioned upstream side valve body thin slice 4a downstream in table back of the body direction consistent location.
The invention of technical scheme 5 of the present invention provides technical scheme 4 described boiler check valve, it is characterized in that, between above-mentioned inflow entrance 31a and above-mentioned inflow entrance 31a, forms crooked strip of paper used for sealing s4, s5,
Above-mentioned crooked strip of paper used for sealing s4, s5 be at the bonding above-mentioned side's side group plinth thin slice 31 of table back of the body direction, above-mentioned valve body thin slice 4 and above-mentioned the opposing party's side group plinth thin slice 32,
Above-mentioned crooked strip of paper used for sealing s4, s5 carry out bending, make from stream the birds-eye view at thin slice of above-mentioned inflow entrance 31a in the boiler check valve V of above-mentioned inflow entrance 31a, to form flexuose stream.
The invention of technical scheme 6 of the present invention provides technical scheme 5 described boiler check valve; It is characterized in that; In stream, between above-mentioned valve body thin slice 4 and above-mentioned the opposing party's side group plinth thin slice 32 by above-mentioned crooked strip of paper used for sealing s4, s5 regulation, inert substances 8 such as configuration liquid-state silicon.
The invention of technical scheme 7 of the present invention provides technical scheme 1 described boiler check valve, it is characterized in that, above-mentioned side's side group plinth thin slice 31 has permeability to air on whole,
Have a part in side's side group plinth thin slice 31 of this permeability to air and form the air communication that the air-flow of above-mentioned positive dirction passes through in table back of the body direction and cross the 31a of portion,
This air communication cross the 31a of portion be in above-mentioned side's side group plinth thin slice 31, with the upstream extremity 4a1 of above-mentioned upstream side valve body thin slice 4a part at the upstream side of table back of the body direction consistent location.
The invention of technical scheme 8 of the present invention provides technical scheme 2 described boiler check valve, it is characterized in that, the said flow of above-mentioned side's side group plinth thin slice 31 is a nonwoven fabrics through the 31a of portion.
The invention of technical scheme 9 of the present invention provides technical scheme 1 described boiler check valve, it is characterized in that, above-mentioned side's side group plinth thin slice 31 is formed by the nonwoven fabrics that on whole, has permeability to air,
Have a part in side's side group plinth thin slice 31 of this permeability to air and form the air communication that the air-flow of above-mentioned positive dirction passes through in table back of the body direction and cross the 31a of portion,
Said flow covers with thin slice 92 with having bubble-tight coating through the part beyond the 31a of portion in above-mentioned side's side group plinth thin slice 31.
The invention of technical scheme 10 of the present invention provides technical scheme 1 described boiler check valve; It is characterized in that; Be installed on the sealing bag 1 with article storing portion 2 and use,, can be breathed freely in an article storing portion 2 and a bag outside for to the outside gas that is present in above-mentioned article storing portion 2 of discharging of bag.
The invention of technical scheme 11 of the present invention provides a kind of sealing bag, and sealing bag 1 has been installed technical scheme 4 described boiler check valve V,
It is characterized in that sealing bag 1 has the bag thin slice 11,12 of soft resin material,
Through bonding above-mentioned bag thin slice 11,12, except article storing mouth 1a with installed the part of above-mentioned boiler check valve V, separate airtightly outward with bag,
Inboard or the outer side bonds of the entire circumference of above-mentioned boiler check valve V and above-mentioned bag thin slice 11,12.
The invention of technical scheme 12 of the present invention provides a kind of sealing bag, and sealing bag 1 has been installed technical scheme 7 described boiler check valve V,
It is characterized in that sealing bag 1 has the bag thin slice 11,12 of soft resin material, through bonding above-mentioned bag thin slice 11,12, except article storing mouth 1a with installed the part of above-mentioned boiler check valve V, separate airtightly outward with bag,
Above-mentioned boiler check valve V is clipped by above-mentioned bag thin slice 11,12, and the air flow line when discharging is that the upstream extremity of benchmark is positioned at above-mentioned article storing portion 2, and downstream end is positioned at outside the above-mentioned article storing portion 2,
The part that the upper reaches in the opposing party's side group plinth thin slice 32 of above-mentioned boiler check valve V are distolateral and bonding with the inner face of above-mentioned the opposing party's side group plinth thin slice 32 opposite sides in above-mentioned bag thin slice 11,12,
Air communication in side's side group plinth thin slice 31 of above-mentioned boiler check valve V is crossed the 31a of portion and is exposed with respect to the space of the article taken in the above-mentioned article storing portion 2,
Form transverse seal 13 through bonding above-mentioned bag thin slice 11,12,
This transverse seal 13 is laterally being crossed the formation of above-mentioned boiler check valve V ground,
In addition, form vertical strip of paper used for sealing 14 through bonding above-mentioned bag thin slice 11,12,
This vertical strip of paper used for sealing 14 is the directions that intersect with above-mentioned transverse seal 13, and the air flow line during with the discharge in the above-mentioned boiler check valve V is that benchmark extends to the upstream side of this transverse seal 13,
14 two on above-mentioned vertical strip of paper used for sealing is that one group of ground forms, and clips above-mentioned boiler check valve V, the wideer interval of width dimensions of this boiler check valve of splitting ratio V,
The upstream extremity 141 of this vertical strip of paper used for sealing 14; Compare the air communication of above-mentioned side's side group plinth thin slice 31 cross among the 31a of portion through above-mentioned transverse seal 13 regulations, the lower end 31a1 of the part passed through of air in fact, the air flow line during with the discharge in the above-mentioned boiler check valve V is that benchmark is positioned at upstream side.
Technical scheme 13 described inventions of the present invention provide a kind of manufacturing approach of technical scheme 1 described boiler check valve, it is characterized in that,
Above-mentioned basic thin slice 31,32 and valve body thin slice 4 use the long size thin slice that is supplied to continuously vertically,
Constitute each above-mentioned one group valve body thin slice 4a, 4b by a long size thin slice supply, laterally be cut into two then, overlapping with above-mentioned side's side group plinth thin slice 31 afterwards.
Technical scheme 12 described inventions of the present invention provide a kind of manufacturing approach of sealing bag, and sealing bag 1 has been installed boiler check valve V,
Above-mentioned boiler check valve V has basic thin slice 31,32 and a plurality of valve body thin slice 4 of soft resin material; Side's side group plinth thin slice 31 in the above-mentioned basic thin slice 31,32 has permeability to air on whole; Above-mentioned basic thin slice 31,32 is provided with in table back of the body direction in opposite directions; In above-mentioned many valve body thin slices 4; Air flow line during with discharge is that baseline configuration is one group at the upstream side valve body thin slice 4a of upstream side and at least two of the downstream valve body thin slice 4b that is configured in the downstream; It is all bonding with respect to above-mentioned at least side's side group plinth thin slice 31 to constitute each above-mentioned one group valve body thin slice 4a, 4b; Make above-mentioned each valve body thin slice 4a, 4b and do not form above-mentioned bondingly overlappingly in table back of the body direction with respect to stating air flow line series connection and both sides when discharging, above-mentioned upstream side valve body thin slice 4a forms with respect to the upstream extremity 4a1 side that is bonded in of above-mentioned side's side group plinth thin slice 31, and downstream end 4a2 side can move relative to above-mentioned basic thin slice 31,32; The above-mentioned downstream end 4ba side that is bonded in of above-mentioned downstream valve body thin slice 4b forms; Upstream extremity 4b1 side can move relative to above-mentioned basic thin slice 31,32, and in above-mentioned each valve body thin slice 4a, 4b, each end 4a2 of that side that can move relative to above-mentioned basic thin slice 31,32,4b1 be the opposing party's side group plinth thin slice 32 tight joint relatively; Perhaps can be relatively with above-mentioned opposite side basis thin slice 32 bonding be different from valve body sheet 4 tight joint that constitute above-mentioned one group thin slice
It is characterized in that that bag thin slice 11,12 uses is that the resin material by softness forms, at vertical long size thin slice that is supplied to continuously,
Have: to above-mentioned each bag thin slice 11, sandwich the operation of above-mentioned boiler check valve V between 12;
Through bonding above-mentioned bag thin slice 11,12 in the operation of laterally crossing above-mentioned boiler check valve V ground formation transverse seal 13; With
Through the operation of the vertical strip of paper used for sealing 14 of bonding above-mentioned band thin slice 11,12 formation,
The direction of vertical strip of paper used for sealing of in above-mentioned operation, forming 14 for intersecting with above-mentioned transverse seal 13, and the air flow line during with the discharge in the above-mentioned boiler check valve V is that benchmark extends to the upstream side of this transverse seal 13,
In addition, 14 two on above-mentioned vertical strip of paper used for sealing is that one group of ground forms, and clips above-mentioned boiler check valve V, the wideer interval of width dimensions of this boiler check valve of splitting ratio V,
The upstream extremity 141 of this vertical strip of paper used for sealing 14; Compare the air communication of above-mentioned side's side group plinth thin slice 31 cross among the 31a of portion by above-mentioned transverse seal 13 regulations, the lower end 31a1 of the part passed through of air in fact, the air flow line during with the discharge in the above-mentioned boiler check valve V is that benchmark is positioned at upstream side.
The effect of invention
The present invention can provide the reliability of raising non-return effect, reduces the little boiler check valve of manufacturing cost and " initial pressure " as far as possible and have the manufacturing approach of sealing bag and this boiler check valve and the sealing bag of this boiler check valve.
Description of drawings
Fig. 1 is the example of boiler check valve of expression embodiment of the present invention, (A) is birds-eye view, (B) be in (A) X-X to looking end view drawing, (C) be upward view.
Fig. 2 is the relation of the opposing party's side group plinth thin slice and each valve body thin slice on the boiler check valve of this example of expression, has shown the skeleton diagram at main position, the state when the expression closed gas flow passes through the space turgidly.
Fig. 3 (A) is the birds-eye view of the sealing bag of this example, (B) is the birds-eye view at main position that is illustrated in the example of the shape that has changed vertical strip of paper used for sealing in the sealing bag of this example.
Fig. 4 is the sealing bag of this example, the skeleton diagram of the cross-sectional plane of the dead end shape portion when being exhaust.
Fig. 5 is the skeleton diagram of state that the boiler check valve of above-mentioned example has been installed on the sealing bag of other embodiment of the present invention; (A) be the block diagram of the rear side of bag; (B) be longitudinal section on the check valve location of bag rear side, the Y-Y of (B) that (C) is bag rear side is to the locational cross sectional drawing of looking.
Fig. 6 (A) is the front elevation of the sealing bag of other embodiment of the present invention, is the front elevation of the sealing bag of other embodiment of the present invention (B), (C) is the central longitudinal section drawing of the sealing bag of (B).
Fig. 7 (A) is the section drawing of the boiler check valve of other embodiment of the present invention; (B) be the birds-eye view of this boiler check valve; (C) be the upward view of this boiler check valve; (D) be the structure instruction diagram of representing this boiler check valve is installed in sealing bag in-to-in state, (E) be the structure instruction diagram that this boiler check valve is installed in the exterior state of sealing bag.
Fig. 8 (A) is the birds-eye view of the boiler check valve of other embodiment of the present invention; (B) be the upward view of this boiler check valve; (C) being the section drawing of this boiler check valve, (D) is the structure instruction diagram of representing this boiler check valve is installed in sealing bag in-to-in state, (E) is the boiler check valve section drawing of other embodiment.
Fig. 9 (A) is the section drawing of the boiler check valve of other embodiment, (B) is the section drawing of the boiler check valve of other embodiment.
Figure 10 be existing example boiler check valve along longitudinal section longitudinally.
The specific embodiment
Below describe based on the example of accompanying drawing with regard to embodiment of the present invention.
In addition; The description of expression position such as " table, the back of the body " described in claims of the present invention or the specification sheets, " upper and lower, left and right ", " vertical, horizontal stroke ", " side, the opposing party " or direction all is to explain for ease or when specific and use, and the applicant does not limit the present invention to the intention of the form that illustrated position concerns.
In addition, the description in " upper reaches, downstream " is to be benchmark with positive dirction (along the discharging longitudinally of boiler check valve V time air flow line).
The sealing bag 1 of this embodiment can be used as the degassing bag use that can discharge the gas that is present in article storing portion 2 and reduce volume.As the concrete purposes of this degassing bag, enumerate for discharge the air that is present in article storing portion 2 use, preserve the doggie bag that food uses (through reduce air in the bag preserve bring into play fresh-keeping effect) or the compressed bag (can reduce capacity) used of clothes through reducing the interior air of bag.In addition, thus also can be used as in article storing portion 2 and take in the article of generation such as coffee bean or laundry soap powder gas for example, discharge gas that these article produce and can be used as and suppress the bag that bag expands and implement to bag is outside.
As stated, for to the outside gas that is present in article storing portion 2 of discharging of bag, on sealing bag 1, install and to make an article storing portion 2 and bag boiler check valve V of outside ventilation.In this example, a sealing bag 1 is provided with a boiler check valve V, but is not limited thereto, and also a plurality of boiler check valve V can be set on a sealing bag 1.
Shown in Fig. 3 (A); The resin material that this routine sealing bag 1 has by softness forms, carries on the back stacked surperficial side pocket thin slice 11 of direction and back side side pocket thin slice 12 at table; Be bonded to each other (heat-sealing) through these bags thin slice 11,12, except article storing mouth 1a completely cuts off with the bag outside with having installed the part of boiler check valve V airtightly.Boiler check valve V is installed on above-mentioned each bag thin slice 11,12 in table back of the body direction with being clipped.In addition, also can make boiler check valve V to be clipped through with the side in the bag 11,12 turnover etc. by a side bag thin slice in each bag thin slice 11,12.In addition, in this example, bag thin slice the 11, the 12nd, overlook into the thin slice of rectangular two identical shaped resin materials in the overlapping form of table back of the body direction, but also can be the bag that the crotch sheet is set in the side, can also be except rectangular other shape.In addition, the chuck of well-known structure is set, airtightly switch on article storing mouth 1a.But if take in the bag of coffee bean or through sealing the sealing bag that final bonding article storing mouth 1a carries out sealing means, then do not need like this can switch chuck.
Boiler check valve V is when the article storing portion of sealing bag 12 discharges gases, is that air communication is crossed space 3a through opening, close the space that this gas passes through, thereby can allows the air communication mistake of positive dirction, blocks the air-flow that sucks direction.
As Fig. 1 (A) (C) shown in, the shape of overlooking (looking up) of the boiler check valve V that this is routine is length side's phase size oblong longer than Width size, said flow is vertically being passed through.
This boiler check valve V has side's side group plinth thin slice 31 and the opposing party's side group plinth thin slice 32 and a plurality of valve body thin slice 4 of soft resin material.
Above-mentioned basic thin slice 31,32 uses the identical resin material thin slice of width dimensions, is provided with in opposite directions in table back of the body direction.About lengthwise dimension, side's side group plinth thin slice 31 is than the opposing party's side group plinth thin slice 32 longer (afterwards its effect and effect will be described).And, the upstream side of these basic thin slices 31,32 (left end side of Fig. 1) alignment, overlapping in table back of the body direction.
Valve body thin slice 4 by each basic thin slice 31,32 be clipped in the middle ground overlapping.And horizontal limit, two ends of bonding (heat-sealing) each basic thin slice 31,32 and upper reaches side end edge, sealing airtightly longitudinally.Either party of basic thin slice 31,32 and valve body thin slice 4 also carried out the bonding of above-mentioned horizontal limit, two ends.Of the back, in this example, because side's side group plinth thin slice 31 has used nonwoven fabrics, therefore, the air communication that the air flow inlet on this boiler check valve V becomes on side's side group plinth thin slice 31 is crossed the 31a of portion (afterwards stating).The preferred one side of this nonwoven fabrics makes the fusion of thermoplasticity Polymer discharge the material of spun-bonded non-woven fabrics that one side forms etc., no fine hair and fastness to water or good endurance with continuous long fibre shape.In addition, through using the long fibre of core sheath structure, promptly this core sheath structure uses the fiber that polyester etc. has intensity in inside, externally uses the soft poly-vinyl that waits processing that also can seal, thereby also can reach intensity and processability simultaneously.It is that the positive dirction air-flow flows into the inflow entrance 31a in the boiler check valve V that this air communication is crossed the 31a of portion.On the other hand, the positive dirction air-flow then becomes boiler check valve V end of downstream side (being between the end limit and side's side group plinth thin slice 31 of the opposing party's side group plinth thin slice 32 strictly speaking) longitudinally from the flow export 32b that boiler check valve V flows out.
In addition, in this example, shown in Fig. 1 (C), at the lateral center formation seal point 5 of boiler check valve V, bonding basic thin slice 31,32 and valve body thin slice 4.In this example, 5 conducts of sealing point form in the short heat-sealing of the longitudinal extension of boiler check valve V.Though sealing point 5 is provided with for the air-flow when discharging carries out rectification, in the present invention not necessarily, also can not form.
In above-mentioned a plurality of valve body thin slices 4, being configured in the upstream side valve body thin slice 4a of upstream side and at least two of the downstream valve body thin slice 4b that is configured in the downstream is one group.
In this example, above-mentioned the opposing party basis thin slice 32 uses the raw MAT'L thin slice (plastic sheeting) all identical with thickness with valve body thin slice 4.These thin slices 32,4 use " self-tightening connects airtight box-like " thin slice (film), the opposing party's easy and that dispose in opposite directions thin slice tight joint.In addition, of the back, side's side group plinth thin slice 31 uses nonwoven fabrics.But the structure of each thin slice is not limited to this example, for example, if make basic thin slice 31,32 be exposed at the outside of sealing bag 1, then also can make basic thin slice 32 form the thin slice thicker than valve body thin slice 4.
It is bonding to constitute all only relative side's side group plinth thin slice 31 of above-mentioned a group each valve body thin slice 4a, 4b.If have under three situation, also can make valve body thin slice 4 bonding with the opposing party basis thin slice 32 with upper valve body thin slice 4.Even if in this case, each the valve body thin slice 4a, all at least one relatively side's side group plinth of the 4b thin slice 31 that constitute one group are bonding, and this is a necessary condition of the present invention.
Constitute the formation bonding like this of the above-mentioned one group relative side's side group plinth thin slice 31 of each valve body thin slice 4a, 4b, make that each valve body thin slice 4a, the interior air flow line of the valve when 4b discharges relatively form series connection and both sides are not overlapping in table back of the body direction.
And, the bonding upstream extremity 4a1 side that is formed on of the relative side's side group plinth thin slice 31 of upstream side valve body thin slice 4a.In Fig. 1 (B), represent this bonding portion with s1.The downstream end 4a2 side of upstream side valve body thin slice 4a can move relative to above-mentioned basic thin slice 31,32.
In addition, the above-mentioned bonding downstream end 4b2 side that is formed on of downstream valve body thin slice 4b.In Fig. 1 (B), represent this bonding portion with s2.The upstream extremity 4b1 side of downstream valve body thin slice 4b can move relative to above-mentioned basic thin slice 31,32.In this example, the downstream end 4b2 of downstream valve body thin slice 4b is consistent with the downstream end 31b of side's side group plinth thin slice 31.
That is, as stated, through bonding each valve body thin slice 4a, 4b, each valve body thin slice 4a, 4b are configured on side's side group plinth thin slice 31 free end Face to face.
In addition, the interval of above-mentioned each valve body thin slice 4a, 4b is preferably formed very little interval, promptly forms otch through utilizing cutting blade to cut a thin slice like the back saidly.Through the very little interval of such formation, even when exhaust, nozzle is inserted degassing valve V, owing between each valve body thin slice 4a, 4b, do not exist layer poor, so nozzle can not be stuck.
In addition, above-mentioned free end is basic relatively thin slice 31,32 each end lamellae 4a2,4b1 opposite side basis thin slice 32 tight joint relatively of that side movably among each valve body thin slice 4a, the 4b.Under the situation that does not form this tight joint, shown in Fig. 1 (B), between each valve body thin slice 4a, 4b and opposite side basis thin slice 32, form the gap, air communication is crossed space 3a and is opened.
In addition, because opposite side basis thin slice 32 is soft materials, therefore when opening this air communication as described above and cross space 3a, the opposing party's side group plinth thin slice 32 passes through the downward side shifting of discharge pressure as Fig. 1 (B) shown in.Therefore, air communication is crossed space 3a and can not stopped up halfway, can carry out unobstructed exhaust.
At this moment; Even just in case (for example owing to reasons such as dewfall) downstream valve body thin slice 4b and opposite side basis thin slice 32 form not segregative state; Air-flow during discharge also can be through the exposed division 31c in side's side group plinth thin slice 31 (boiler check valve V is installed in 1 last time of sealing bag is positioned at article storing portion 2 exterior parts), the exhaust of therefore being not difficult.
On the other hand, as shown in Figure 2, in case the pressure ratio bag outside of article storing portion 2 is low, then produce negative pressure f in the inside of boiler check valve V.Each valve body thin slice 4a, 4b float from side's side group plinth thin slice 31 owing to this negative pressure f.As stated, opposite side basis thin slice 32 is " self-tightening connects airtight box-like " thin slice with each valve body thin slice 4a, 4b use, and therefore aspectant both sides carry out tight joint really through above-mentioned floating.Under the situation that has realized tight joint, the gap between each valve body thin slice 4a, 4b and the opposite side basis thin slice 32 disappears, and air communication is crossed space 3a and is closed.
At this moment, might shown in arrow among Fig. 2, flow into from the air-flow s of the exposed division 31c adverse current in boiler check valve V side's side group plinth thin slice 31.If like this, the air-flow s that each valve body thin slice 4a, 4b should be wanted adverse current is by being pressed on the opposing party's side group plinth thin slice 32, and both sides are tight joint securely further.Therefore, air communication is crossed space 3a and is closed more firmly.
In this example, as shown in Figure 2, each valve body thin slice 4a, 4b be relative the opposing party's side group plinth thin slice 32 tight joint respectively.That is, owing to two local tight joint that form, therefore compare with the structure of the boiler check valve shown in the patent documentation 1, the reliability of non-return effect further improves.Therefore, need not as the invention of patent documentation 1, to apply the low viscosity (LV) inert fluid.Therefore, help reducing the manufacturing cost of boiler check valve.But, also can apply low viscosity (LV) inert fluid (for example silicone oil etc.) in order further to improve the reliability of non-return effect.
In addition, under the situation of also bonding valve body thin slice 4 on the opposing party's side group plinth thin slice 32, each valve body thin slice 4a, 4b are respectively relatively and bonding valve body thin slice 4 tight joint of the opposing party's side group plinth thin slice 32.
In this example, the bonding side's side group plinth thin slice 31 that constitutes each above-mentioned one group valve body thin slice 4a, 4b all has permeability to air on whole.More particularly, in this example, the side's side group plinth thin slice 31 with this permeability to air uses nonwoven fabrics.
The air communication that air-flow when the part in above-mentioned side's side group plinth thin slice 31 is formed on above-mentioned discharge passes through in table back of the body direction is crossed the 31a of portion.This air communication cross the 31a of portion be in side's side group plinth thin slice 31, with the upstream extremity 4a1 of bonding upstream side valve body thin slice 4a in the part of the upstream side of table back of the body direction consistent location.
And; All have permeability to air on 31 whole of one side's side group plinth thin slices, but and each valve body thin slice 4a, 4b to be valve support portion 31b at boiler check valve V be installed in can not become under the state on the sealing bag 1 crosses the part (but can as above-mentioned, pass through through each end 4a2 of each valve body thin slice 4a, 4b, the air-flow between the 4b1) that the air communication the 31a of portion is crossed as air communication in the overlapping part of table back of the body direction.
In this example, because side's side group plinth thin slice 31 is nonwoven fabrics,, form rough surface with each valve body thin slice 4a, 4b face in opposite directions therefore at above-mentioned valve support portion 31b.Therefore, even each valve body thin slice 4a, 4b are " self-tightening connect airtight box-like " as stated, also can easily separate with side's side group plinth thin slice 31.
At present, separate easily like this in order to make the valve body thin slice, applying coatings on basic thin slice and valve body thin slice face in opposite directions, but, need not applying coatings according to the structure of side's side group plinth thin slice 31 of this example.This point also helps reducing the manufacturing cost of boiler check valve.
Wherein, above-mentioned side's side group plinth thin slice 31 need not to be shown in like this example and all has permeability to air on whole.Also can have the thin slice of permeability to air and the thin slice of no permeability to air through only using some thin slice with permeability to air or bonding, only making air communication cross the 31a of portion can breathe freely.Even in this case, separate with side's side group plinth thin slice 31 easily in order to make each valve body thin slice 4a, 4b, preferably through 31b carries out formation rough surfaces such as Corona discharge Treatment in the valve support portion.
As stated, the downstream end 4b2 of the downstream valve body thin slice 4b in this example is consistent with the downstream end 31b of side's side group plinth thin slice 31.In this example, length side's phase size of side's side group plinth thin slice 31 is longer than the opposing party's side group plinth thin slice 32, the upstream side alignment of each basic thin slice 31,32.Therefore, in the valve body thin slice 4b of downstream, with the downstream end 32a of the opposing party's side group plinth thin slice 32 part in the downstream of table back of the body direction consistent location, form with the opposing party's side group plinth thin slice 32 at the nonoverlapping noncontact 4b3 of portion of table back of the body direction.
If the downstream side end edge that the 4b3 of noncontact portion is not set like this but makes boiler check valve V then receives the influence of the warp (undulation) that on thin slice, produces easily in table back of the body direction unanimity, produce adverse current through capillarity easily.Because above-mentioned warp has the more tangible trend the closer to the end limit; Therefore in this example; Position through making the relative side's side thin slice tight joint of the opposing party's side thin slice avoids holding the border district to stagger; Make the opposing party's side group plinth thin slice 32 and downstream valve body thin slice 4b tight joint as illustrated in fig. 2, thereby reduce the influence of above-mentioned warp.Through the 4b3 of noncontact portion is set like this, can prevent backflow effectively.
The upstream extremity of the boiler check valve V of said structure is positioned at the article storing portion 2 of sealing bag 1, and downstream end is positioned at outside the above-mentioned article storing portion 2.Position relation for the relative sealing bag 1 of boiler check valve V; The downstream end of boiler check valve V also can be outstanding from the end limit of sealing bag 1; But in this example as Fig. 3 (A) (B) shown in, what make that the downstream end of boiler check valve V is positioned at sealing bag 1 more installs boiler check valve V near the ground, position of article storing portion 2 than end limit.That is, the valve integral body of the boiler check valve V in this example be sandwiched in bag thin slice 11, between 12.Through like this, boiler check valve V receives the protection of bag thin slice 11,12, and therefore basic thin slice 31,32 can use relatively thinner thin slice (plastic sheeting).In addition, owing to can prevent that boiler check valve V is outstanding from the end limit of sealing bag 1, so the outward appearance of sealing bag 1 is also good-looking, has prevented also when keeping sealing bag 1 etc. that outstanding boiler check valve V is in the way.In addition, the seal point 15 of Fig. 3 (A) shown in (B) is that bonding each bag thin slice 11,12 also can omit in order to put a bag thin slice 11,12 to together together in the downstream of boiler check valve V.
In this example, it is poor that the shape that is used for the heat-sealing of bonding bag thin slice 11,12 shown in (B) like Fig. 3 (A) has layer.Through like this, cut away a part of article storing portion 2 ground and form.Boiler check valve V is configured on this part of cutting away.In addition, in this example, formed this and " cut away portion " overlooking bight for rectangular sealing bag 1; Utilize article storing portion 2 as far as possible biglyyer; But the invention is not restricted to this, for example also can be according to the requirement in the design, central authorities form " cutting away portion " in the end of sealing bag 1.
Any one inner face with bag thin slice 11,12 above-mentioned the opposing party's basis thin slice 32 that side in opposite directions in the part that the upper reaches on the opposing party's side group plinth thin slice 32 of boiler check valve V are distolateral and the bag thin slice 11,12 is bonding.In this example, bonding with back side side pocket thin slice 12 as illustrated in fig. 4 through forming fixedly strip of paper used for sealing 6 of valve, through like this, the air communication of side's side group plinth thin slice 31 of boiler check valve V is crossed the space of the taken in article of the 31a of portion in article storing portion 2 and is exposed.This valve fixedly strip of paper used for sealing 6 is arranged on the transverse ends of boiler check valve V in this example shown in Fig. 1 (C) linearly, but as shown in Figure 4, as long as boiler check valve V can follow the distortion of back side bag thin slice 12, can carry out various changes to position relation, shape, quantity.In addition, for make boiler check valve V effectively along after the inner face of dead end shape portion 21 of the arc stated, this valve fixedly strip of paper used for sealing 6 preferably is arranged on the air flow line downstream of the upstream extremity 141 of vertical strip of paper used for sealing 14.Cross the 31a of portion through exposing air communication as described above, thereby the air that will be present in article storing portion 2 easily guides to boiler check valve V, can the exhaust of unobstructed ground.
In addition, through bonding (heat-sealing) each bag sheet 11,12 each other, on sealing bag 1, formed transverse seal 13.In addition, above-mentioned vertical strip of paper used for sealing 14 with cross the position in length and breadth that strip of paper used for sealing 13 is not expression sealing bag 1 and each bag thin slice 11,12, but will be along the direction of the upstream and downstream of boiler check valve V as vertically, will with its direction that intersects as laterally (crossing).
This transverse seal 13 more particularly, is formed on the downstream of the upstream extremity 4a1 of upstream side valve body thin slice 4a laterally crossing the formation of boiler check valve V ground.Transverse seal 13 (B) is shown in and forms rectilinear form in the birds-eye view like Fig. 3 (A) in this example, but also can form waveform.If form such waveform, then when air-out, exhaust gas pressure laterally is being applied on the boiler check valve V unevenly, has and opens the advantage that air communication is crossed space 3a easily.
In addition; In this example; The inner face of the opposing party's side group plinth thin slice 32 in the part that forms transverse seal 13 applies and peels off with coating 7; Hot slight bonding the opposing party's side group plinth thin slice 32 and upstream side valve body thin slice 4a when utilize forming heat-sealing and being transverse seal 13, can avoid can not unobstructed exhaust problem.Also can replace this to peel off the inner face that nonwoven fabrics sticks on the opposing party's side group plinth thin slice 32 in addition with coating 7.
Except above-mentioned transverse seal 13, on sealing bag 1, form vertical strip of paper used for sealing 14 each other through bonding (heat-sealing) each bag thin slice 11,12.This vertical strip of paper used for sealing 14 is the directions (being the direction of orthogonal in this example) that intersect with above-mentioned transverse seal 13, and the air flow line during with the discharge in the above-mentioned boiler check valve V is benchmark, extends to the upstream side of this transverse seal 14.And above-mentioned vertical strip of paper used for sealing 14 forms with being described below, that is, above-mentioned boiler check valve V is clipped, and reserves the wideer interval of width dimensions than this boiler check valve V, and inboard vertically strip of paper used for sealing 14a and two of the vertical strip of paper used for sealing 14b in the outside are one group.In this example, the vertical strip of paper used for sealing 14b in the outside that be formed on boiler check valve V right side of Fig. 3 (A) in (B) simultaneously double as be formed at the side seal bar on sealing bag end limit.In addition, in this example, vertical strip of paper used for sealing 14a in above-mentioned inboard and transverse seal 13 form through a seal bar (hot plate) simultaneously.
The upstream extremity 141 of vertical strip of paper used for sealing 14; Air flow line during with the discharge in the boiler check valve V is a benchmark; Compare the air communication of side's side group plinth thin slice 31 cross among the 31a of portion by above-mentioned transverse seal 13 regulations, the lower end 31a1 of the part passed through of air in fact, be positioned at upstream side.About the upstream extremity of boiler check valve V and the vertical position relation of the upstream extremity 141 of strip of paper used for sealing 14, this upstream extremity 141 preferably is arranged on the position more than the upstream extremity of boiler check valve V at air flow line.In this example, shown in Fig. 3 (A), the upstream extremity 141 among the inboard vertically strip of paper used for sealing 14a becomes position much at one with the upstream extremity of boiler check valve V at air flow line.In addition; Even this upstream extremity 141 is arranged on the downstream of the upstream extremity of boiler check valve V; For make air communication cross among the 31a of portion a lot of parts with after the dead end shape portion 21 of the arc stated overlap, preferably dwindle the distance on the air flow line of this upstream extremity 141 and the upstream extremity of boiler check valve V as far as possible.
In addition, in this example, the vertical strip of paper used for sealing 14a in this inboard forms at graphic above-below direction continuously, but for example also can be provided with among Fig. 3 (A) with the ventilative gap 14c shown in the dotted line, can also shown in Fig. 3 (B), make inboard vertically strip of paper used for sealing 14a become the mode of being interrupted.In this case; Also can be of the back; Forming deformable is the dead end shape portion 21 of arc, and the air of diagram left part in the article storing portion 2, that be present in inboard vertically strip of paper used for sealing 14a is passed through ventilative gap 14c to boiler check valve V guiding, can the exhaust of unobstructed ground.
Form dead end shape portions 21 through above-mentioned transverse seal 13 and vertical strip of paper used for sealing 14.This dead end shape portion 21 presses under the situation about rising in making under the situation of pushing article storing portion 2 with hand or because of the article taken in produce gas, and as shown in Figure 4, cross-sectional plane expand into arc.As stated, boiler check valve V is owing to bonding with back side side pocket thin slice 12, so boiler check valve V will be along the inner face of the dead end shape portion 21 that becomes arc as described above.
When exhaust, the air of article storing portion 2 is at first by to dead end shape portion 21 guiding, crosses behind the 31a of portion to bag is outside through air communication successively then and discharges.On the other hand, if do not form this dead end shape portion 21, then each bag thin slice 11, possible insufficient expansion between 12 when exhaust can not the exhaust of unobstructed ground.When forming dead end shape portion 21 then above-mentioned condition can not take place, exhaust more swimmingly, thus also reduced above-mentioned " initial pressure ".
At this, in existing sealing bag, boiler check valve is not easy to open, and above-mentioned in order to dwindle " initial pressure " is provided with boiler check valve in the end of sealing bag, causes the basic thin slice and the distortion of valve body thin slice of boiler check valve on the contrary sometimes.Can dwindle " initial pressure " although it is so, but on the contrary the problem that causes adverse current easily arranged also.With respect to this, boiler check valve V of the present invention can carry out unobstructed exhaust individually, to being installed in the not restriction of position on the sealing bag 1, can improve the Design freedom of sealing bag 1.
Below, describe with regard to the manufacturing approach of above-mentioned boiler check valve V.Above-mentioned basic thin slice 31,32 and valve body thin slice 4 use the long size thin slice that is supplied to continuously vertically.And, constituted each above-mentioned one group valve body thin slice 4a, 4b and supplied with by a long size thin slice, then with cutting blade after transverse cuts becomes two, overlapping and bonding with side's side group plinth thin slice 31.Through this cutting, promptly formed otch on a long size thin slice at the material of above-mentioned valve body thin slice 4.And, carry out behind the above-mentioned otch above-mentioned overlappingly immediately owing to form, so the state that the interval of each valve body thin slice 4a, 4b is maintained at very little interval is down and carry out bonding.Therefore, compare with the situation of supplying with thin slice as the material of each valve body thin slice 4a, 4b respectively, can be simply and make boiler check valve V accurately, can not improve manufacturing cost yet.
In addition; From needing in the manufacturing installation design etc.; Also can be with above-mentioned opposite; Valve body thin slice 4 by a long size thin slice is supplied with is at first overlapping with side's side group plinth thin slice 31, and the valve body thin slice 4 usefulness cutting blades with this overlap condition laterally are being cut into two then, form each valve body thin slice 4a, 4b.
Boiler check valve V is laterally conjointly being made, and is cut into one by one being installed in 1 last time of sealing bag.But also can the continuous valve at horizontal a plurality of continuous states be installed on the sealing bag 1.
Below, the manufacturing approach of the sealing bag 1 of above-mentioned boiler check valve V just has been installed has carried out simple declaration.That bag thin slice 11,12 uses is that soft resin material is processed, at the long size thin slice of vertically supplying with continuously.In addition, the manufacturing approach of sealing bag 1 comprise with above-mentioned boiler check valve V be clipped in each bag thin slice 11, between 12 operation, form the operation of above-mentioned transverse seal 13, the operation through the above-mentioned vertical strip of paper used for sealing 14 of bonding bag thin slice 11,12 formation equally through bonding bag thin slice 11,12.Can make sealing bag continuously through this manufacturing approach with boiler check valve.
Be not limited to the bag shown in Fig. 3 (A), as other embodiment, can with this boiler check valve V be installed in shown in Fig. 5 (A) on the sealing bag 201 of what is called " upright pillow " formula of the packing that is usually used in coffee bean etc.State when in addition, each figure of Fig. 5 representes article storing.Fig. 5 (C) records and narrates is the inboard that bag is represented in the top of figure, and the outside of bag is represented in the below of figure.
When making the sealing bag 201 of such " upright pillow " formula; Broken line 212,212 places in the left and right sides of bag turn down with a bag thin slice 211; The side end limit that makes bag thin slice 211 consistent each other (formation put the palms together before one state) overleaf; Boiler check valve V is clipped in carries out bondingly between the above-mentioned end limit in opposite directions, the strip of paper used for sealing that forms is like this used as above-mentioned transverse seal 13.In addition, as Fig. 5 (B) (C) shown in, comparing the mode that above-mentioned transverse seal 13 enters into the private side of sealing bag 201, form strip of paper used for sealing between the bonding bag thin slice 211.This strip of paper used for sealing is brought into play the effect of above-mentioned vertical strip of paper used for sealing 14.In the example shown in Fig. 5 (B), at the vertical upstream extremity of strip of paper used for sealing 14, the auxiliary strip of paper used for sealing 16 that extends in parallel with boiler check valve V reversing sense, with transverse seal 13 is set, through like this, gas in dead end shape portion 21 guiding bags effectively.
For the sealing bag 201 of this " upright pillow " formula, also same with the bag shown in Fig. 3 (A), form dead end shape portions 21 through transverse seal 13 and vertical strip of paper used for sealing 14, if bag in press liter, then the cross-sectional plane of this dead end shape portion 21 just expand into arc (with reference to figure 4).Therefore with above-mentioned same, sealing bag 201 also can the exhaust of more unobstructed ground, can also reduce above-mentioned " initial pressure ".Therefore, often producing the article of gas (CO2 etc.) if collecting article is a coffee bean etc., thus then can not take place gas because of this generation be difficult to bag outside, discharge cause in remaining in bag sealing bag 201 expand inexquisite situation.
In example shown in Figure 3, boiler check valve V is arranged on the bottom of sealing bag 1, but can suitably changes the position that boiler check valve V is set, can be the sidepiece of sealing bag 1, also can be the central portion (front or the back side) of sealing bag 1.
The example of Fig. 6 (A) is arranged on the locational example near article storing mouth 1a of sealing bag 1 sidepiece.In this example, make two bag thin slices 11,12 become recess 211 to horizontal canyon topography in position near article storing mouth 1a with chuck, boiler check valve V is installed with the mode of growing crosswise with clipping.This recess 211 is sealed to form through two bag thin slices 11,12.
The strip of paper used for sealing of the inboard of this recess 211 becomes above-mentioned transverse seal 13.In this example; Taking under the situation of liquid substance or taking in out under the situation of food etc. of juice; Owing at the bottom of liquid substance accumulates in bag,, can avoid liquid substance that boiler check valve V is had adverse effect therefore through boiler check valve V is arranged on the position near article storing mouth 1a.In addition, in this embodiment, vertical strip of paper used for sealing 14 that also can be provided with in each example of fwd is implemented.
Fig. 6 (B) example (C) is arranged on the example of the central portion (front or the back side) of sealing bag 1.In this example, with a side the bag thin slice 11 be divided into the first thin slice 11a and the second thin slice 11b.The end limit of this first thin slice 11a and the second thin slice 11b seals each other, forms a bag strip of paper used for sealing, and boiler check valve V is installed between the first thin slice 11a and the second thin slice 11b with clipping.Strip of paper used for sealing between this first thin slice 11a and the second thin slice 11b becomes the transverse seal 13 of crossing boiler check valve V.In this example, the downstream of boiler check valve V is positioned at the outside (outside of bag) of a side thin slice (the second thin slice 11b), and the upstream side of boiler check valve V is positioned at the inner face (inboard of bag) of the opposing party's thin slice (the second thin slice 11b).Though no matter boiler check valve V shows the back of the body can install, in this example, the inner face side that will be configured in by side's side group plinth thin slice 31 that nonwoven fabrics etc. forms bag.Make side's side group plinth thin slice 31 be positioned at the first thin slice 11a that side in opposite directions installed under the situation of boiler check valve V; Food is accommodated in the sealing bag 1 when heating with micro-wave oven; The air that expands because of heating is pushed side's side group plinth thin slice 31 of boiler check valve V to the first thin slice 11a; Might can not unobstructed ground air-out, and inboard through side's side group plinth thin slice 31 being configured in bag, can discharge the interior expanded air of bag unobstructedly.Especially in this example, need not above-mentioned example that kind for boiler check valve V and sealing bag 1 is bonding and the heat seal lands of needed transverse seal 13 is installed.Its result; Can discharge with lower pressure; For example, if as the article of taking in generations gases such as coffee bean or laundry soap powder, bag implementing of can outside discharging gas that these article produce to bag, stop that bag expands, then can reduce the initial pressure ground of institute's exhaust body and discharge.
In addition, the second thin slice 11b preferably uses the thin slice that can carry out two-sided heat-sealing.Specifically be the preferred common ironed film that forms by two-sided polyethylene foil that uses.This be because this second thin slice 11b a side face (face in the outside among the figure) with comprise that the first thin slice 11a of transverse seal 13 seals, seal at the opposing party's face (face of the inboard among the figure) bag thin slice 12 with the opposing party.If use the thin slice that can only seal a side, then shown in the example of Fig. 5, also can turn down institute leak free end limit and seal.In addition, owing to can use the two-sided heat-sealing that is formed by two-sided polyethylene foil etc., then the example of Fig. 5 does not need to turn down yet.
In addition, in this embodiment, vertical strip of paper used for sealing 14 that also can be provided with in each example above using is implemented.
Represent other embodiment based on Fig. 7.In this example, changed the part of the boiler check valve V of Fig. 1, below with the change part be that the center describes, unaccounted position is the same with the boiler check valve V of Fig. 1.
In this example, form side's side group plinth thin slice 31 with two kinds of thin slices.Specifically be, the thin slice 31a that is positioned at upstream side in side's side group plinth thin slice 31 is identical with the example of Fig. 1, is that air communication is crossed the 31a of portion, and the thin slice that is had permeability to air by nonwoven fabrics etc. constitutes.The thin slice 31d in downstream is different with the fwd example, and 31d constitutes by the air-tightness thin slice.These air communication are crossed the end of 31a of portion and air-tightness thin slice 31d, and are bonding at bonding portion s1 with the upstream extremity 4a1 of upstream side valve body thin slice 4a.
In the example of Fig. 1, make the opposing party's side group plinth thin slice 32 to one side's side group plinth thin slices 31 shorter, form air by-pass passage; But in this example; Make the big or small identical of the opposing party's side group plinth thin slice 32 and side's side group plinth thin slice 31, bonding its whole periphery forms complete cycle adhesive portion s3.
The opposing party's side group plinth thin slice 32 is identical with the example of Fig. 1, adopts to have bubble-tight thin slice, and through forming the suitably flow export 32b of shape such as otch, as the distolateral flow export in downstream.This flow export 32b is configured in the downstream (right side of figure) of upstream extremity 4b1 of downstream end 4a2 and the downstream valve body thin slice 4b of upstream side valve body thin slice 4a.
Shown in Fig. 7 (D), this boiler check valve V can be configured in the inside of sealing bag 1.Bag vent 17 ground that cover on the back side side pocket thin slice 12 that is arranged at sealing bag 1 from the inboard dispose this boiler check valve V, and its complete cycle and back side side pocket thin slice 12 is bonding.Also can shared this be bonding with above-mentioned complete cycle adhesive portion s3, also can seal separately.In the drawings, flow export 32b is arranged on the identical position with bag vent 17, but so long as in the scope of above-mentioned complete cycle adhesive portion s3, also can be arranged on the different positions.
Under the situation of the air in discharging sealing bag 1, air is crossed the 31a of portion from air communication and is got in the boiler check valve V, flows out to the outside from bag vent 17 through flow export 32b.If air will flow into from the outside, then just form negative pressure in the boiler check valve, upstream side valve body thin slice 4a and downstream valve body thin slice 4b and the opposing party's side group plinth thin slice 32 tight joint and close closed channel.
In addition, shown in Fig. 7 (E), this boiler check valve V also can be configured in the outside of sealing bag 1.Be arranged at this boiler check valve of the bag vent 17 ground configuration V on the back side side pocket thin slice 12 of sealing bag 1 from outer side covers, its complete cycle and back side side pocket thin slice 12 is bonding.Also can shared this be bonding with above-mentioned complete cycle adhesive portion s3, also can seal separately.In the drawings, air communication is crossed the 31a of portion be arranged on the identical position, but so long as in the scope of above-mentioned complete cycle adhesive portion s3, also can be arranged on the different positions with bag vent 17.
Under the situation of the air in discharging sealing bag 1, air is crossed the 31a of portion from bag vent 17 through air communication and is got in the boiler check valve V, and 32b flows out to the outside from flow export.If air will flow into from the outside, then just form negative pressure in the boiler check valve, upstream side valve body thin slice 4a and downstream valve body thin slice 4b and the opposing party's side group plinth thin slice 32 tight joint and close closed channel.
It is still outside no matter this boiler check valve V to be installed in the inside of sealing bag 1, and boiler check valve V also can be configured on the surperficial side pocket thin slice 11 with a bag vent 17.
In addition, this Fig. 7 has represented lower-upper length turgidly, and each thin slice always is bonded together in fact, only under the situation of airiness, just opens very little gap.
Can apply crooked strip of paper used for sealing s4, s5 as boiler check valve V of the present invention for any embodiment, form zigzag stream in the birds-eye view.An one of which object lesson is shown in Fig. 8.This example has changed the part of the example of Fig. 7, only describe changing part, and the part beyond the explanation is identical with the example of Fig. 7.
This routine boiler check valve V is identical with the example of Fig. 1, makes the opposing party's side group plinth thin slice 32 to one side's side group plinth thin slices 31 short, with the space between the opposing party's side group plinth thin slice 32 and the complete cycle adhesive portion s3 as flow export 32b.Can certainly adopt the flow export 32b shown in the example of Fig. 7.
On the almost total length from the upstream extremity to the downstream end of boiler check valve V, form crooked strip of paper used for sealing s4, s5, the bonding side's side group plinth thin slice 31 of table back of the body direction, valve body thin slice 4 and the opposing party's side group plinth thin slice 32 these threes.It is the same that this boiler check valve V and the air communication of Fig. 7 (B) are crossed the 31a of portion, adopted nonwoven fabrics etc. to have the thin slice of permeability to air, but in order to understand the crooked strip of paper used for sealing s4 of ground expression, s5 easily, be to have omitted grid with Fig. 7 (B) among Fig. 8 (A) at this birds-eye view differently.
In this example, form two crooked strip of paper used for sealing s4, s5, the interval between two crooked strip of paper used for sealing s4, the s5 enlarges gradually, is expanded into infundibulate (ロ one ト shape) more near its upstream side (left side of figure) more thereby cross among the 31a of portion in air communication.Thus, can make air cross the 31a of portion from air communication gets in the boiler check valve V unobstructedly.In the part with valve body thin slice 4, two crooked strip of paper used for sealing s4, s5 simultaneously keep little gap one side crooked or bendingly towards the downstream (right side of figure).The length of two crooked strip of paper used for sealing s4, s5 is different, and crooked strip of paper used for sealing s4 of the side surpasses upstream side valve body thin slice 4a, is getting into the stage disappearance of downstream valve body thin slice 4b.The opposing party's crooked strip of paper used for sealing s5 extends to the downstream end of the opposing party's side group plinth thin slice 32 and disappears.On the downstream end and the flow export 32b between the complete cycle adhesive portion s3 of the opposing party's side group plinth thin slice 32, do not form crooked strip of paper used for sealing s4, s5.This is for air can be discharged from flow export 32b unobstructedly.Certainly; The example of crooked strip of paper used for sealing s4, s5 has only been represented in above-mentioned explanation, is enlarging stream near its upstream extremity with near downstream end, the air inside and outside the boiler check valve V is circulated unobstructedly as long as when the part with valve body thin slice 4 weakens the rectilinear propagation of air, stream is narrowed down.In addition, though formed two crooked strip of paper used for sealing s4, s5, also can only form one.In this case, form stream between crooked strip of paper used for sealing and the complete cycle adhesive portion s3.On the contrary, also can form crooked strip of paper used for sealing more than three, also can use in the lump with seal point etc.In addition, also can cut out out the shape of side's side group plinth thin slice 31 and the opposing party's side group plinth thin slice 32, also can make the part of crooked strip of paper used for sealing s4, s5 double as complete cycle adhesive portion s3 along the shape of crooked strip of paper used for sealing s4, s5.
And, in this example, with inert substances such as a spot of liquid-state silicon 8 be provided in stream between two crooked strip of paper used for sealing s4, the s5 midway, be configured between valve body thin slice 4 and the opposing party's side group plinth thin slice 32.When closing closed channel, improve tight joint property between the two, prevent that air from spilling in this upstream side valve body thin slice 4a and the opposing party's side group plinth thin slice 32 tight joint.Thereby, in this example, only inert substances such as liquid-state silicon 8 are configured between upstream side valve body thin slice 4a and the opposing party's side group plinth thin slice 32, but also can be configured between downstream valve body thin slice 4b and the opposing party's side group plinth thin slice 32.
This boiler check valve V is identical with the example of Fig. 7, can be configured in the inside or the outside of sealing bag 1, prevents fluid countercurrent current through the effect identical with the boiler check valve V of Fig. 7, only allows fluid to flow to a direction (from the inboard of bag laterally in the present example).Fig. 8 (D) expression is installed in the example in bag thin slice 12 outsides of sealing bag 1.
As stated, this boiler check valve V is through being provided with crooked strip of paper used for sealing s4, s5, and the stream of air forms lost shape, though therefore at air under the situation that positive dirction flows, also produce some resistances.Can carry out various changes to the degree of formation resistance according to shape, size or the length of crooked strip of paper used for sealing s4, s5, can adjust according to its purposes.For example; If this boiler check valve V is used to take in the sealing bag of food; The steam that with defreezing by microwave oven or heating the time, produces from food is discharged to the sealing bag outside through this boiler check valve V; And through the resistance of crooked strip of paper used for sealing s4, s5 formation air exhaustion is set, steam is discharged outside bag gradually.Through like this, can steaming food, can utilize micro-wave oven to carry out the more delicious culinary art of thawing.Like this, can be according to needed air exhaustion amount, the shape or the size (length, width) that suitably change crooked strip of paper used for sealing s4, s5 are used.
Fig. 9 (A) expression is provided with the example of the valve body thin slice 91 that is different from above-mentioned valve body thin slice 4a, 4b.This new valve body thin slice 91 is arranged between the above-mentioned valve body thin slice of boiler check valve V in-to-in 4a, 4b and the opposing party's side group plinth thin slice 32; Can with any at least side's tight joint of above-mentioned two valve body thin slice 4a, 4b, this new valve body thin slice 91 passes through fluid with above-mentioned two valve body thin slice 4a, 4b combineds action and prevents backflow.In other embodiment of the present invention, also can adopt this new valve body thin slice 91.
In the example of above-mentioned Fig. 7, Fig. 8; The air communication that one side's side group plinth thin slice 31 is divided into nonwoven fabrics etc. crosses the 31a of portion and air-tightness thin slice 31d implements; The material that also can be shown in Fig. 9 (B) has a permeability to air by nonwoven fabrics etc. forms the integral body of side's side group plinth thin slice 31, with having the parts of bubble-tight coating with its downstream of 92 coverings of thin slice.Through with whole side's side group plinth thin slices 31 of formation such as nonwoven fabrics, can prevent valve body thin slice 4a, 4b unnecessarily do not bring into play boiler check valve with side's side group plinth thin slice 31 tight joint the such situation of effect.Coat with the thickness of thin slice 92 etc. though can be provided with arbitrarily,, can prevent that boiler check valve V from being pushed by the collecting article in the sealing bag and bend or problem such as distortion through the thicker big hard sheet of use, can protective valve and give full play to its function.
Through the boiler check valve V of above-mentioned explanation is provided, can prevent as far as possible simultaneously that the manufacturing cost of boiler check valve V from increasing, one side improves the reliability of non-return effect, can make the various sealing bags 1 that this boiler check valve has been installed more excellent than existing bag.
And, be under the situation of perishable article such as food especially at the collecting article of sealing bag 1, owing to can make the exhaust of article storing portion 2 unobstructedly, therefore have the effect that prevents the collecting article oxidation, help fresh-keeping.
Description of reference numerals
1 sealing bag, 11 surperficial side pocket thin slices, 12 back side side pocket thin slices, 13 transverse seal; 14 vertical strip of paper used for sealings, the upstream extremity of 141 vertical strip of paper used for sealings, 2 article storing portions, the 3a air communication is crossed the space; 31 1 side's side group plinth thin slices, the 31a air communication is crossed portion, 32 the opposing party's side group plinth thin slices, 4 valve body thin slices; 4a upstream side valve body thin slice, the upstream extremity of 4a1 upstream side valve body thin slice, the downstream end of 4a2 upstream side valve body thin slice, 4b downstream valve body thin slice; The upstream extremity of 4b1 downstream valve body thin slice, the downstream end of 4b2 downstream valve body thin slice, the noncontact portion of 4b3 downstream valve body thin slice, V boiler check valve.

Claims (14)

1. boiler check valve; This boiler check valve constitutes through overlapping multiple sheet; Between said thin slice, form and cross the space, cross the space, can allow from the air communication mistake of inflow entrance to the positive dirction of flow export through opening and closing this air communication as the air communication in the space that gas is passed through; Block from the inverted draft of flow export to inflow entrance
It is characterized in that having the valve body thin slice of softness of basic thin slice and many resin materials of many resin materials,
Said many basic thin slices are provided with in table back of the body direction in opposite directions,
In said many valve body thin slices, be that baseline configuration is one group at the upstream side valve body thin slice of upstream side and at least two of the downstream valve body thin slice that is configured in the downstream with the air flow line of positive dirction,
It is bonding to constitute said one group all at least one relatively side's side group plinth of each valve body thin slice thin slice,
The air flow line of said bonding so that said each valve body thin slice during with respect to said the discharge becomes series connection and both sides carry out in the nonoverlapping mode of table back of the body direction,
The said relatively side's side group plinth thin slice of said upstream side valve body thin slice be bonded in the distolateral formation in the upper reaches, downstream are distolateral can move relative to said basic thin slice,
Said downstream valve body thin slice said is bonded in the distolateral formation in downstream, and the upper reaches are distolateral can move relative to said side's side group plinth thin slice,
The relative the opposing party's side group of at least a portion plinth thin slice of said one group valve body thin slice; The perhaps relative thin slice that said one group valve body flakily is configured in the opposition side of said side's side group plinth thin slice that clips as the valve body thin slice that is different from said one group valve body thin slice; Can tight joint and can separate; Allow the air communication mistake of positive dirction thus, block reverse air-flow.
2. boiler check valve according to claim 1 is characterized in that, the air communication with permeability to air that the air-flow that the part of said side's side group plinth thin slice forms said positive dirction passes through in table back of the body direction is crossed portion,
The said air communication portion of mistake is that the air-flow of positive dirction flows into the inflow entrance in the boiler check valve,
The said air communication portion of mistake is configured among said side's side group plinth thin slice, with the upstream extremity of said upstream side valve body thin slice upstream side in table back of the body direction consistent location.
3. boiler check valve according to claim 2 is characterized in that, said side's side group plinth thin slice is crossed portion by said air communication and formed with other part, and this other part has air-tightness.
4. boiler check valve according to claim 1 is characterized in that, the said flow export that flows out in the boiler check valve at air-flow that the outer sheet side of said the opposing party's side has a positive dirction,
Said flow export forms less than the outer thin slice of said side's side through making the outer thin slice of said the opposing party's side, perhaps forms through on the outer thin slice of the opposing party's side, opening being set,
Said flow export is configured among said side's side group plinth thin slice, with the downstream end of said upstream side valve body thin slice downstream in table back of the body direction consistent location.
5. boiler check valve according to claim 4 is characterized in that, between said inflow entrance and said inflow entrance, forms crooked strip of paper used for sealing,
Said crooked strip of paper used for sealing table back of the body direction bonding said side's side group plinth thin slice, said valve body thin slice and said the opposing party's side group plinth thin slice,
Said crooked strip of paper used for sealing is crooked to be provided with, and makes when overlooking the observation thin slice, to form flexuose stream from the stream of said inflow entrance in the boiler check valve of said inflow entrance.
6. boiler check valve according to claim 5 is characterized in that, in the stream by said crooked strip of paper used for sealing regulation, between said valve body thin slice and said the opposing party's side group plinth thin slice, disposes inert substances such as liquid-state silicon.
7. boiler check valve according to claim 1 is characterized in that, said side's side group plinth thin slice has permeability to air on whole,
This has a part among side's side group plinth thin slice of permeability to air and forms the air communication that the air-flow of said positive dirction passes through in table back of the body direction and cross portion,
This air communication portion of mistake be among said side's side group plinth thin slice, with the upstream extremity of said upstream side valve body thin slice part at the upstream side of table back of the body direction consistent location.
8. boiler check valve according to claim 2 is characterized in that, the said air communication portion of mistake of said side's side group plinth thin slice is a nonwoven fabrics.
9. boiler check valve according to claim 1 is characterized in that, said side's side group plinth thin slice is made up of the nonwoven fabrics that on whole, has permeability to air,
This has a part among side's side group plinth thin slice of permeability to air and forms the air communication that the air-flow of said positive dirction passes through in table back of the body direction and cross portion,
The said air communication portion of mistake part is in addition used sheet covers by having bubble-tight coating among said side's side group plinth thin slice.
10. boiler check valve according to claim 1; It is characterized in that; Said boiler check valve is mounted use on the sealing bag with article storing portion, for to the outside gas that is present in said article storing portion of discharging of bag, can be breathed freely in an article storing portion and a bag outside.
11. a sealing bag is characterized in that, is the sealing bag that boiler check valve as claimed in claim 4 has been installed,
The sealing bag has the bag thin slice of soft resin material,
Through bonding said bag thin slice, except the article storing mouth with separate airtightly with the bag outside the part that said boiler check valve has been installed,
Inboard or the outer side bonds of the complete cycle of said boiler check valve and said bag thin slice.
12. a sealing bag is characterized in that, is the sealing bag that boiler check valve as claimed in claim 7 has been installed,
The sealing bag has the bag thin slice of soft resin material,
Through bonding said bag thin slice, except the article storing mouth with installed the part of said boiler check valve, separate airtightly with the bag outside,
Said boiler check valve is clamped by said bag thin slice, and the air flow line when discharging is that the upstream extremity of benchmark is positioned at said article storing portion, and downstream end is positioned at outside the said article storing portion,
It is bonding among the part that the upper reaches in the opposing party's side group plinth thin slice of said boiler check valve are distolateral and the said bag thin slice with the inner face of said the opposing party's side group plinth thin slice that side in opposite directions,
Expose in the space that can take in article in the said relatively article storing portion of the air communication portion of mistake in one side's side group plinth thin slice of said boiler check valve,
Form transverse seal through bonding said bag thin slice,
This transverse seal to be forming in the mode of laterally crossing said boiler check valve,
In addition, form vertical strip of paper used for sealing through bonding said bag thin slice,
The direction that this vertical strip of paper used for sealing is and said transverse seal intersects, and the air flow line during with the discharge in the said boiler check valve is that benchmark extends to the upstream side of this transverse seal,
Two on said vertical strip of paper used for sealing is that one group of ground forms, and clips the wideer interval of width dimensions of said boiler check valve and this boiler check valve of splitting ratio,
Air flow line during with the discharge in the said boiler check valve is a benchmark, the upstream extremity of this vertical strip of paper used for sealing, with cross in the air communication of said side's side group plinth thin slice in the portion by said transverse seal regulation, the lower end of the part passed through of air is compared in fact, is positioned at upstream side.
13. the manufacturing approach of a boiler check valve as claimed in claim 1 is characterized in that, as said basic thin slice and valve body thin slice, uses the long size thin slice that is supplied to continuously vertically,
Constitute each said one group valve body thin slice and supply with, laterally be cut into two then by a long size thin slice, overlapping with said side's side group plinth thin slice afterwards.
14. the manufacturing approach of a sealing bag, the sealing bag has been installed boiler check valve, it is characterized in that,
Said boiler check valve has basic thin slice and a plurality of valve body thin slice of soft resin material,
Side's side group plinth thin slice among the said basic thin slice has permeability to air on whole,
Said basic thin slice is provided with in table back of the body direction in opposite directions,
Among said many valve body thin slices, the air flow line during with discharge is that baseline configuration is one group at the upstream side valve body thin slice of upstream side and at least two of the downstream valve body thin slice that is configured in the downstream,
All the basic thin slice of said at least side's side is bonding relatively to constitute each said one group valve body thin slice,
It is said that bonding air flow line during with respect to said discharge becomes series connection and both sides carry out in the nonoverlapping mode of table back of the body direction with said each valve body thin slice,
The said relatively side's side group plinth thin slice of said upstream side valve body thin slice be bonded in the distolateral formation in the upper reaches, downstream are distolateral can move relative to said basic thin slice,
Said downstream valve body thin slice said is bonded in the distolateral formation in downstream, and the upper reaches are distolateral can move relative to said basic thin slice,
Among said each valve body thin slice; Each end of that side that can move relative to said basic thin slice; Relatively the opposing party's side group plinth thin slice can tight joint, and perhaps constituting said one group other valve body thin slice with bonding being different from of said the opposing party's side group plinth thin slice relatively can tight joint
In this boiler check valve, as the bag thin slice, use that resin material by softness forms at vertical long size thin slice that is supplied to continuously,
Have:
Between said each bag thin slice, sandwich the operation of said boiler check valve;
Through bonding said bag thin slice, to form the operation of transverse seal in the mode of laterally crossing said boiler check valve; With
Through bonding said band thin slice, form the operation of vertical strip of paper used for sealing;
The vertical strip of paper used for sealing that in said operation, forms for and the direction that intersects of said transverse seal, and the air flow line during with the discharge in the said boiler check valve is that benchmark extends to the upstream side of this transverse seal,
And two on said vertical strip of paper used for sealing is that one group of ground forms, and clips the wideer interval of width dimensions of said boiler check valve and this boiler check valve of splitting ratio,
Air flow line during with the discharge in the said boiler check valve is a benchmark, the upstream extremity of this vertical strip of paper used for sealing, with cross in the air communication of said side's side group plinth thin slice in the portion by said transverse seal regulation, the lower end of the part passed through of air is compared in fact, is positioned at upstream side.
CN2010800455628A 2009-10-30 2010-03-18 Check valve, sealing bag, and production method for both Active CN102548858B (en)

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CN102548858B (en) 2013-07-10
JP5433873B2 (en) 2014-03-05

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