CN101217896A - Closure device for storage bag - Google Patents

Closure device for storage bag Download PDF

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Publication number
CN101217896A
CN101217896A CNA2006800250833A CN200680025083A CN101217896A CN 101217896 A CN101217896 A CN 101217896A CN A2006800250833 A CNA2006800250833 A CN A2006800250833A CN 200680025083 A CN200680025083 A CN 200680025083A CN 101217896 A CN101217896 A CN 101217896A
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CN
China
Prior art keywords
encapsulant
restraint zone
closure profile
storage bag
locking device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2006800250833A
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Chinese (zh)
Inventor
C·L·伯格曼
A·E·内尔特纳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glad Products Co
Original Assignee
Glad Products Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Glad Products Co filed Critical Glad Products Co
Publication of CN101217896A publication Critical patent/CN101217896A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D81/00Containers, 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
    • B65D81/18Containers, 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
    • B65D81/20Containers, 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
    • B65D81/2007Containers, 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
    • B65D81/2038Containers, 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
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/10Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/16Interlocking member having uniform section throughout the length of the stringer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/24End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/15Bag fasteners
    • Y10T24/158Slides to lock bag end within housing

Abstract

A closure element is used for closing an opening disposed through the flexible sidewall of a storage bag such as those used to store food items. Storage bags of this type provide an internal volume accessible via the opening. The closure element includes a first fastening strip and an interlocking second closure strip. The first and second fastening strips include complementary, engagable first and second closure profiles. To hermetically seal the internal volume, at least a portion of the first or second fastening strip can include a sealant. The sealant can be a displaceable fluid, fluid-like substance, or wax-like substance such as an oil or a gel. When the closure profiles are engaged, the sealant provides an air tight barrier sealing the internal volume.

Description

The locking device that is used for storage bag
Technical field
The present invention relates generally to storage container, more specifically relating to design has for example flexible storage bag of the locking device of interlocking restraint zone.The present invention is specially adapted to the food storage field.
Background technology
Storage bag is normally used for various purposes, comprises for example storage food.This storage bag is typically by cheaply, the flexible thermoplastic material makes, and the internal capacity that food can be put into is provided.In order to enter this internal capacity, storage bag typically is formed with an opening.In addition, in order to preserve food or to prevent that content from overflowing sack, this storage bag also can comprise locking device, and this locking device comprises the interlocking restraint zone that is used to seal described opening.In order to preserve food, also be well known that, the storage bag or the similar device that have one-way valve element are provided, be used for after the described locking device of interlocking, described internal capacity being carried out exhaust.
Be clear that for those skilled in the art the interlocking restraint zone is typically by elongated band semirigid, thermoplastic and forms, and described elongated band is oppositely arranged in pairs along the opposite edges of opening.What form along the length of every band is engageable closure profile, described profile be suitable for be formed on relative restraint zone on corresponding profile be meshed or cooperate.Repeat to enter internal capacity in order to allow, described closure profile is constructed to usually and can discharges each other and can repeatedly mesh.
Because the semi-rigid characteristic of restraint zone material, and because the aligning between the closure profile and the variation of their shapes, the engagement between the interlocking restraint zone is often undesirable.Leakage path or crack may be formed between the closure profile, thereby make outside air can enter internal capacity.In addition, described leakage path also can make aromatic series gas or the leak of liquid that is stored in the internal capacity.In addition, comprising the one-way valve element that is used for exhaust or the embodiment of similar device, described leakage path can prevent that storage bag from keeping internal capacity to be in emptying state.
Summary of the invention
The invention provides a kind of interlocking restraint zone that is used for storage bag, be suitable for gas-tight seal and be arranged on opening in the described bag.For sealing is provided, a kind of encapsulant be comprised at least one of the closure profile that is formed on the interlocking restraint zone or among.Described encapsulant can be to hate liquid or semiliquid material for example oil, gel or wax.When restraint zone was pressed together so that closure profile when engagement, encapsulant moves or flows with sealing or fill up any space or the leakage path that is present between the described closure profile.Thereby described encapsulant provides adaptable barrier between engageable closure profile.
An advantage of the invention is provides a kind of sealing or gas-tight seal that is applied to flexible storage bag cheaply.Another advantage is to seal by moving to produce during each the application again, and removable encapsulant can be repeatedly used storage bag.Another advantage is to allow the less precision and the degree of accuracy in the manufacturing of described profile or moulding, and the present invention can make simply.According to detailed explanation and accompanying drawing, these and other advantage of the present invention and feature will become clear.
Description of drawings
Fig. 1 is the front perspective view of the storage bag of the closure elements with interlocking restraint zone form of instruction design according to the present invention.
Fig. 2 is the sectional view along the line A-A of Fig. 1, has shown to be in the not interlocking restraint zone that comprises encapsulant of engagement.
Fig. 3 is the sectional view along the line A-A of Fig. 1, has shown the interlocking restraint zone that comprises encapsulant that is in engagement.
Fig. 4 is the sectional view along the line A-A of Fig. 1, has shown another embodiment of the interlocking restraint zone that comprises encapsulant that is in engagement, and described encapsulant only is set on the band.
Fig. 5 is the sectional view along the line A-A of Fig. 1, has shown another embodiment of the interlocking restraint zone that comprises encapsulant that is in engagement, and described encapsulant only is set on the band.
Fig. 6 is the sectional view along the line A-A of Fig. 1, has shown another embodiment of the interlocking restraint zone that comprises encapsulant that is in engagement, and described encapsulant only is set on the band.
Fig. 7 is the sectional view along the line A-A of Fig. 1, has shown another embodiment of the interlocking restraint zone that comprises encapsulant that is in engagement, and described encapsulant is set to the lip-deep film of restraint zone.
Fig. 8 has shown the encapsulant in the capillary that is in the surface that is formed on the interlocking restraint zone for the details drawing in the zone that demonstrates among Fig. 7.
Fig. 9 is the sectional view along the line A-A of Fig. 1, has shown another " profile " embodiment of the interlocking restraint zone that comprises encapsulant that is in engagement.
Figure 10 is the sectional view along the line A-A of Fig. 1, has shown another " arrow " or " projection and groove " embodiment of the interlocking restraint zone that comprises encapsulant that is in engagement.
Figure 11 is the front perspective view of another embodiment of the storage bag that comprises the one-way valve element that slide block and the nozzle that links to each other with exhaust apparatus use of instruction design according to the present invention.
Figure 12 is the sectional view along the line B-B of Figure 11, has shown " roll extrusion effect (rolling action) " embodiment of the restraint zone that comprises encapsulant that is in engagement.
The specific embodiment
With reference to the accompanying drawings, wherein identical Reference numeral is represented components identical, the exemplary flexible storage bag 100 that has shown the typical types that is used for storage food in Fig. 1.This storage bag comprises that the first side wall 102 is with overlapping with the first side wall and engage so that the second relative sidewall 104 of internal capacity 106 to be provided.Described first and second sidewalls 102,104 can be made by flexible thermoplastic diaphragm (web).The example of the thermoplastic that is fit to comprises: polyethylene (PE), high density polyethylene (HDPE) (HDPE), low density polyethylene (LDPE) (LDPE), LLDPE (LLDPE), polypropylene (PP), ethylene vinyl acetate (EVA), nylon, polyester, polyamide, ethylene-vinyl alcohol (ethylene vinyl alcohol), and can form single or multiple lift.Described thermoplastic can be transparent, translucent, opaque or the band color.In addition, the described material that is used for sidewall can be a gas impermeable material.
First and second sidewalls 102,104 are bonded together along first lateral margin 110, the second parallel lateral margin 112 and the root edge 114 that seals by for example heat seal operation.In order to enter internal capacity 106, the corresponding apical margin 118 of the apical margin 116 of the first side wall 102 and second sidewall 104 keeps not engaging, so that opening 120 is provided.Because four square edges, illustrational storage bag 100 has rectangular shape.Yet, should be understood that described in other embodiments bag is owing to can have the sidewall of any amount and edge thereby can be any suitable shape.
In order to seal described opening 120, provide the locking device of second restraint zone 124 that comprises first restraint zone 122 and interlocking.Elongated restraint zone 122,124 can form by the semi-rigid thermoplastic materials of performance rebound characteristics is carried out extrusion modling.First and second restraint zones 122,124 link to each other with the inner surface of first and second sidewalls 102,104 respectively, extend to second lateral margin 112 near apical margin 116,118 and from first lateral margin 110 respectively.In order to connect described restraint zone, can adopt the operation of adhesive or heat seal.
In order to make first and second restraint zones 122,124 can interlocking, form first and second closure profile 130,132 respectively continuously along the length of every band.It will be appreciated by persons skilled in the art that first and second closure profile 130,132 have complementary shape, thereby they can mesh or mate each other in interlock mode.When such engagement, thereby complementary closure profile plays the function that first and second apical margins 116,118 is remained close to each other sealing opening 120.In order repeatedly to enter internal capacity 106, restraint zone 122,124 is constructed to each other interlocking releasably ideally.
According to an aspect of the present invention, in order to strengthen the sealing of being set up by the closure profile of engagement, encapsulant is applied to the interlocking restraint zone.Described encapsulant can be viscous fluid, flow-like material, waxy substance or other similar substance.The typical characteristics of this material is that they do not solidify or solidify, thereby keeps flowable or mobility.When the engagement of described closure profile, encapsulant moves to fill or sealing may be present in sealing slit or other leakage path between the semi-rigid closure profiles owing to what defective or misalignment caused.Like this, described encapsulant just provides the gas-tight seal or the vacuum seal of internal capacity.Described encapsulant should have be contained in the storage bag and air or all big density and the viscosity of gas in the environment around.The example of the encapsulant that is fit to comprises: silicone oil, mineral oil, monoglyceride, aliphatic acid, polybutene, vaseline and silica gel.At these embodiment that use with the bag that is used for storage food of the present invention, expectation be that encapsulant has the qualification of food grade materials.
An example of the interlocking restraint zone of design is shown in Figure 2 according to the present invention.Illustrated restraint zone the 122, the 124th, known " U-lag " type restraint zone.First restraint zone 122 is formed with the male closure profile 130 that the planar base element 140 from the inner surface that is suitable for being connected in the first side wall protrudes.This male closure profile 130 comprises first and second projectioies 142,144 parallel to each other and interval first distance.End in each projection 142,144 is formed with first and second hooks or the barb 146,148 that back points to base member 140 basically respectively.In addition, described barb 146,148 directed in opposite or away from each other each other.The distal most surface of barb 146,148 roughly is shaped or rounding, so that first and second guiding surfaces 150,152 to be provided respectively.Be understandable that, comprise that the male closure profile 130 of first and second projectioies 142,144 is extended basically on the whole length of first restraint zone 122.
Second restraint zone 124 of the pairing shown in Fig. 2 forms female closure profile 132, and this profile is protruded from the planar base element 160 that is suitable for being connected on second inside surface of side wall similarly.The female closure profile of protruding 132 comprises first and second projectioies 162,164 parallel to each other and the interval second distance.This second distance should be a bit larger tham first distance, thereby female closure profile 132 is suitable for receiving the projection 142,144 of male closure profile 130.End in each projection 162,164 of female closure profile 132 is formed with first and second hooks or the barb 166,168 that back points to base member 160 basically respectively.In addition, described barb 166,168 faces with each other and points to each other.The distal most surface of barb 166,168 roughly is shaped or rounding, so that first and second guiding surfaces 170,172 to be provided respectively.In addition, female closure profile 132 also comprises the flange 174 that protrudes from about centre position of first and second projectioies 162,164 of base member 160, and this flange 174 extends to and the about identical height of first and second projectioies.Should be understood that, comprise that the female closure profile 132 of first and second projectioies 162,164 is extended basically on the whole length of second restraint zone 124.
On male closure profile 130, encapsulant 136 is deposited in three gaps or groove that is present between first and second projectioies 142,144 and the base member 140.Similarly, on female closure profile 132, encapsulant 136 be deposited on result from first the projection 162 and flange 174 between and the flange and second projection 164 between the gap in.In illustrational embodiment, described encapsulant should enough glue, thereby it is deposited in the closure profile and can freely flow out described gap.
As shown in Figure 3, for convex and female closure profile 130,132 are meshed, the first and second interlocking restraint zones 122,124 are exerted pressure toward each other, contact with guiding surface 170,172 on the female projections 160,162 up to the guiding surface on the male projections 142,144 150,152.Because the semi-rigid characteristic of restraint zone material, the contact between the guiding surface causes male projections 142,144 to curve inwardly, and female projections 162,164 is outwardly-bent.Thereby the barb 166,168 on barb 146,148 on the male projections 142,144 and the female projections 162,164 can slip over each other.In case slip over each other, the elastic characteristic of restraint zone material makes convex and female projections to the back bending song, makes described barb be moved into engagement interlocked with one another.Because the semi-rigid and elastic characteristic of restraint zone material, pulling force enough, that apply on the contrary can make convex and female closure profile break away from engagement each other.
With reference to Fig. 3, when convex and female closure profile 132,134 such engagements, be in encapsulant 136 on the male closure profile and the encapsulant that is on the matrix profile and contact and interact.Thereby described encapsulant provides airtight barrier or sealing on whole closure profile.Further be convenient to provide sealing by the flange 174 that insertion is deposited in the encapsulant 136 in the gap between the male projections 142,144.In addition, encapsulant 136 can move to or suck in the slit or leakage path between the barb of engagement by capillarity.
In other embodiments, encapsulant need all not be provided with on first and second restraint zones.For example, with reference to accompanying drawing 4, encapsulant 136 only is arranged on the male closure profile 130 between first and second projectioies 142,144 of first restraint zone 122.When first and second " U-lag " type restraint zone 122,124 is pressed together, the flange 174 of female closure profile 132 is inserted in the encapsulant 136, so that airtight barrier to be provided, prevent that air or other liquid or gas from bleeding or spill the internal capacity of storage bag.
With reference to Fig. 5, encapsulant 136 only is set on the female closure profile 132 in the gap that is provided by first and second projectioies 162,164 and flange 174.When first and second " U-lag " type restraint zone 122,124 is pressed together, the guidance surface 150,152 of male projections 142,144 is pressed in the encapsulant 136, prevents that air or other liquid or gas from bleeding or spill the sealing barrier of the internal capacity of storage bag thereby provide.In addition, encapsulant 136 can move to or suck in the slit or leakage path between the barb of engagement by capillarity.
In other embodiments, encapsulant can be arranged in other zone outside the closure profile.For example, with reference to Fig. 6, except male closure profile 130, first restraint zone 122 can comprise from first flange 176 of planar base element 140 projectioies and isolated second flange 178.Described flange 176,178 is positioned at the relative both sides of convex profile 130 and spaced away, and extends along the length of first restraint zone 122 basically.Encapsulant 136 can be deposited in the space that is provided by another gap between the gap between first flange 176 and first male projections 142 and second flange 178 and second male projections 144.
When first and second restraint zones 122,124 are pressed together, first and second projectioies 162,164 of female closure profile 132 can be around corresponding first and second projectioies 142,144 motion of male closure profile 130 contacting with encapsulant 136, thus provide airtight barrier prevent air bleed in internal capacity or internally volume spill.
Referring to Fig. 7, be another embodiment of " U-lag " type restraint zone, encapsulant is arranged on male closure profile 130 and the female closure profile 132.Particularly, encapsulant 136 is arranged on the surface of male projections 142,144 and female projections 162,164.Encapsulant 136 is preferably glue or viscous oil so that encapsulant remains on the lip-deep correct position of closure profile as film.
When first and second restraint zones 122,124 were pressed together, the encapsulant 136 on the convex profile 130 contacted and interacts with encapsulant on the matrix profile 132, thereby sealing barrier is provided.In addition, encapsulant can move to or suck in the slit or leakage path between the barb that is present in engagement by capillarity.In other embodiments, encapsulant can only be deposited on the surface of male closure profile or only be deposited on the surface of female closure profile.
In other embodiments, encapsulant can immerse in the material of closure profile.With reference to Fig. 8, in one aspect, immerse closure profile in order to make encapsulant 136, a large amount of capillaries 180 can be set in the closure profile of not engagement.Described capillary 180 can be formed sulculus or the passage that is provided with along the surface of closure profile 130,132.Then, encapsulant 136 can be received in the capillary 180 by any suitable method.During meshing, when first and second restraint zones are pressed together, convex and female closure profile are held each other and the bending carried out makes encapsulant 136 discharge from capillary 180.Then, described encapsulant can move or sucking-off by capillarity, with slit or the leakage path between the closure profile of filling or sealing engagement.In other embodiments, by for example etching, capillary can be formed a plurality of small diameter bore or the eyelet in the material that is in closure profile.Then, by encapsulant is received in the capillary, the sealing profile can be dipped into.
In yet another aspect, immerse closure profile in order to make encapsulant, encapsulant can be mixed in the material of closure profile itself.The distortion during meshing of convex and female closure profile will make the surface of encapsulant emersion closure profile, and the removable or sucking-off of encapsulant is to fill or the sealing leakage path herein.
Comprise by be deposited into the gap, as a film, insert in the capillary or be mixed into the present invention that those embodiment of encapsulant are provided in the closure profile material, can use together with multiple different interlocking restraint zone.For example, for example " profile " type interlocking restraint zone of disclosure and description in United States Patent (USP) 5664299 shown in Figure 9, this patent documentation all is comprised in herein as a reference.The interlocking restraint zone 222,224 of " profile " type comprises first closure profile 230, and its base member 240 from first restraint zone 222 is protruded, and is suitable for being meshed with corresponding second closure profile of protruding from the base member 260 of second restraint zone 234 232.
First closure profile 230 comprises and being parallel to each other and first pair of projection 242,244 of each interval first distance.Be formed with first barb 246,248 that back points to base member 240 basically respectively at each end of first projection 242,244.In addition, described projection is shaped as described barb is arranged along equidirectional.The common rounding of the distal most surface of first projection or be configured as first guidance surface 250,252 is provided.
Second closure profile 232 also comprises and being parallel to each other and second pair of projection 262,264 of each interval second distance.Second distance between second projection 262,264 is dimensionally corresponding to first distance between first projection 242,244.End in second projection 262,264 is formed with the second hook-type barb 266,268 that back points to base member 240 basically respectively.In addition, second projection 262,264 is shaped as second barb is arranged along equidirectional, and opposite with the direction of first barb 246,248.The common rounding of the distal most surface of second projection or be configured as second guidance surface 270,272 is provided.
In the embodiment of illustrational " profile " restraint zone 222,224, encapsulant 236 can be set at first and be with, and in the gap that is formed between isolated first projection 242,244 and first base member 240.Similarly, encapsulant 236 also can be set at second and be with, and in the gap that is formed between isolated second projection 262,266 and second base member 260.The viscosity of special encapsulant 236 is enough big, it is deposited in the closure profile 232,236, and can freely spill from described gap.
For first and second closure profile that make Fig. 9 are meshed, first and second restraint zones 222,224 are forced together, thereby make first projection, 242,244 adjacency isolated second projection 262,264 accordingly.Particularly, first guiding surface 250,252 contacts with second guiding surface 270,272, make first projection 242,244 and 262,264 bendings of second projection, thereby second barb 266,268 of first barb 246,248 and reverse direction is slipped over each other and be meshed.When such engagement, be between first projection 242,244 and the encapsulant 236 between second projection 262,264 contacts and interacts, thereby between the interlocking restraint zone, provide sealing barrier.In addition, encapsulant 236 is removable to fill or to seal the leakage path between the barb that is present in engagement.
With reference to accompanying drawing 9, provide the encapsulant individually or in the gap between projection, the material that encapsulant can be used as film, be arranged in capillary or be mixed into the closure profile of " profile " type interlocking restraint zone provides.In addition, described encapsulant can be located on any one of closure profile or on two.
With reference to accompanying drawing 10, wherein the form with sectional view has shown for example disclosed in american documentation literature 3806998 " arrow " or " flange and groove " type restraint zone 322,324, and described United States Patent (USP) all is comprised in herein as a reference." arrow " type restraint zone comprises first restraint zone 322 with the protrusion head 342 that stretches out from planar base element 340.This head comprises the mushroom head 344 that is positioned at the end that dwindles neck 346 that links to each other with base member 340.Described protrusion head 342 can be received in the corresponding C shape slot part 362 of the second plane bag element, 360 formation.By such layout, restraint zone 322,324 is suitable for interlocking ground engagement when being pressed together, and is separated by firmly drawing back.
In the embodiment of illustrational " arrow " type restraint zone, encapsulant 336 can be deposited in the slot part 362.Therefore, synchronously will in the convex head 342 insertion slot parts 362 removable encapsulant 336 be flowed around described head, thereby between the restraint zone 322,324 of engagement, provide sealing barrier.
With reference to Figure 10, provide the encapsulant individually or in the gap between projection, encapsulant can be used as film, be in the capillary or be mixed in the material of closure profile of " profile " type interlocking restraint zone and provide.
With reference to Figure 11, shown another embodiment according to the storage bag of instruction design of the present invention.Illustrational storage bag 400 comprises easily curved the first side wall 402, and this first side wall 402 is overlapping with second sidewall 404 and engage so that internal capacity 406 to be provided.For first and second apical margins 416,418 that enter internal capacity 406, the first and second sidewalls 402,404 keep respectively not engaging, so that opening 420 to be provided.In order to seal opening 420, the first and second interlocking restraint zones 422,424 are connected near each apical margin 416,418.In specific storage bag 400 shown in Figure 11, in order to seal or open restraint zone 416,418, storage bag 400 comprises a slide block 426.This slide block 426 is generally the U-shaped structure on the apical margin 416,418 of sidewall 402,404.Slide block 426 meshes or disengaging along the mobile interlocking restraint zone 422,424 that makes of apical margin 416,418.
Except comprising slide block 426, the storage bag 400 shown in Figure 11 also comprises check valve (one-valve) element 427 that is used for removing from storage bag potential air.This one-way valve element 427 is installed on the first side wall 402, and communicates with internal capacity 406.For via the described internal capacity 406 of these one-way valve element 427 emptyings, the mouth of pipe 428 that links to each other with vacuum source 429 can be placed against described valve element or against the first side wall 402 around the valve element, and is started.The vacuum source that links to each other with the mouth of pipe 428 can be any suitable vacuum source, for example, comprises manual pump, mechanical pump, water suction machine (water aspirator), mouthful haustorium or the like.In other embodiments, potential air can be exerted pressure together and is drained by oppose side wall 402,404.
Interlocking restraint zone 422,424 can be as shown in figure 12 and " roll extrusion effect " type that describe in United States Patent (USP) 5007143, and this U.S. patent documents all comprises in this manual as a reference.Describedly comprise the moulding orbit 430 and 432 that extends and be parallel to flange and groove element 436 and 438 along its length with 422,424.Described flange and groove element 436,438 have complementary cross sectional shape, thereby at first make their sealings by being exerted pressure together in the bottom of described element, then towards its top with described element roll extrusion to detent position.Flange component 436 protrudes for hook-type and from the inner surface with 422.Complementary groove element 438 comprises the bottom hook-type projection 440 and the relative more straight projection 442 of stretching out with 424 inner surface from second.Encapsulant 434 can be received and remain in the groove element 438 according to mentioned above.Moulding orbit 430,432 respectively is with 422,424 to slope inwardly towards each other from they.
Straddle type slide block 428 comprises reverse U-shaped plastic components, this element has and is used for the back 450 of moving along the apical margin of described track 430,432, be used for two parallel sidewalls 452,454 of cooperating with track with hanging down, and extend to blind end from the openend of slide block from the back.Separate finger 456 and hang down between sidewall 452,454, and be inserted between the inclined plane 430,432 from back 450.Described slide block 428 has from the sidewall 452,454 that hangs down to projecting inward shoulder 458,460, the length that described shoulder runs through slide block is shaped, the separation finger 456 that is used for and hangs down matches, thereby produces the roll extrusion effect in the process of opening and sealing Reclosable interlocking flange and Slot shaping element 436,438.Synchronously will removable encapsulant 434 be flowed around flange, thereby between the restraint zone 422,424 of engagement, provide sealing barrier.In addition, comprise that at storage bag 400 those embodiment of the valve element 427 that is used for emptying internal capacity 406, encapsulant can help storage bag to keep emptying state.
With reference to Figure 12, the material that individually or except that providing the encapsulant in groove element 438, encapsulant can be used as film, be arranged in capillary or be mixed into the closure profile of " roll extrusion effect " type interlocking restraint zone provides.
Like this, the invention provides a kind of locking device that is used for storage bag, comprise releasable interlocking restraint zone.For gas-tight seal is provided, encapsulant is comprised at least a portion of restraint zone.Described encapsulant can be viscous fluid, flow-like material or waxy substance.Except gas-tight seal was provided, described encapsulant can prevent that air from entering internal capacity after emptying, thereby helped to preserve the food that is contained in the storage bag.
All lists of references, comprise that public publication, patent application document and the patent document quoted in this specification are all involved in this manual as a reference, this reference is equal to every part of reference paper and shows individually and clearly and be comprised in herein by quoting and all set forth in this article.
In the context of describing the present invention's (particularly claim hereinafter), demonstrative pronouns such as employed term " ", " one ", " this ", " described ", " its " both should be interpreted as that encompasses singular also contains plural number, unless spell out in this article or obviously conflict with context.Term " comprises ", " having ", " comprising " and " containing " should be interpreted as open-ended term (promptly the meaning is " including but not limited to "), unless otherwise noted.Statement for number range herein only is intended to as writing a Chinese character in simplified form method, refer to each centrifugal pump that drops in the described scope separately, unless spell out herein, each centrifugal pump is all in this manual involved, just as it is incorporated in herein individually.Described herein all methods can be carried out with any suitable order, unless have other to indicate herein or obviously conflict with context.Any and whole example that is adopted herein or exemplary language (as " for example ") only are intended to better the present invention is illustrated, rather than scope of the present invention are limited, unless other statement is arranged.Language in this specification should not be interpreted as referring to any element that is equal to the failed call right of enforcement of the present invention.
Described the preferred embodiments of the present invention herein, comprised being used to implement the preferred forms that the present inventor knows.The variation of these preferred embodiments will become clear for those skilled in the art after reading aforementioned specification.The inventor wishes that those skilled in the art implement this suitable variation, and the inventor wishes that the present invention is implemented in the mode outside the specifically described mode among the present invention.Therefore, the present invention includes be documented in this paper appended by all changes of the theme of being put down in writing in claims that applicable law allowed and be equal to alternative.In addition, any combination of the said elements in might changing also contained by the present invention, unless have other to indicate herein or obviously conflict with context.

Claims (25)

1. locking device comprises:
The first interlocking restraint zone comprises first closure profile of extending along the length of the first interlocking restraint zone basically;
The second interlocking restraint zone comprises basically second closure profile of extending along the length of the second interlocking restraint zone, and first and second closure profile are engageable with the first and second restraint zone interlockings;
Wherein, at least a portion of first closure profile comprises encapsulant.
2. locking device as claimed in claim 1, wherein, at least a portion of second closure profile comprises encapsulant.
3. locking device as claimed in claim 1, wherein, described encapsulant is arranged on the surface of first closure profile.
4. locking device as claimed in claim 1, wherein, described encapsulant immerses in first closure profile.
5. locking device as claimed in claim 4, wherein, described encapsulant is received in the capillary that is arranged in first closure profile.
6. locking device as claimed in claim 4, wherein, described encapsulant is mixed in the material of first closure profile.
7. locking device as claimed in claim 1, wherein, described encapsulant is an oil.
8. locking device as claimed in claim 1, wherein, described encapsulant is a gel.
9. locking device as claimed in claim 1, wherein, described encapsulant is selected from the group that comprises following material: silicone oil, mineral oil, monoglyceride, aliphatic acid, polybutene, vaseline and silicon gel.
10. locking device as claimed in claim 1, wherein, described restraint zone comprises U-lag type restraint zone.
11. locking device as claimed in claim 1, wherein, described restraint zone comprises arrowhead-shaped restraint zone.
12. locking device as claimed in claim 1, wherein, described restraint zone comprises profile type restraint zone.
13. locking device as claimed in claim 1, wherein, described locking device further comprises the removable slide block that is arranged on the restraint zone.
14. a flexible storage bag comprises:
Flexible the first side wall;
Flexible second sidewall, this second sidewall is overlapping with the first side wall and engage, and so that internal capacity to be provided, can enter described internal capacity via the opening that is arranged between first and second sidewalls;
The first interlocking restraint zone, this restraint zone links to each other with the first side wall, and is positioned near the opening, and described first restraint zone comprises first closure profile;
The second interlocking restraint zone, this restraint zone links to each other with second sidewall, and is positioned near the opening, and described second restraint zone comprises second closure profile that can be meshed with first closure profile; With
Be arranged on the encapsulant at least a portion of first closure profile.
15. storage bag as claimed in claim 14, wherein, described encapsulant is arranged on the surface of first closure profile.
16. storage bag as claimed in claim 14, wherein, described encapsulant immerses in first closure profile.
17. storage bag as claimed in claim 14, wherein, described encapsulant is an oil.
18. storage bag as claimed in claim 14, wherein, described encapsulant is a gel.
19. storage bag as claimed in claim 14, wherein, described encapsulant is selected from the group that comprises following material: silicone oil, mineral oil, monoglyceride, aliphatic acid, polybutene, vaseline and silicon gel.
20. storage bag as claimed in claim 14, wherein, the valve element is installed at least one of the first side wall or second sidewall.
21. a method that seals storage bag comprises:
(i) provide a storage bag, the flexible sidewall that provides via the enterable internal capacity of an opening is provided this storage bag, described storage bag also comprises near the first and second interlocking restraint zones that are positioned at the described opening, and this first and second restraint zone comprises the first and second engageable closure profile respectively;
(ii) at least a portion along first closure profile is provided with encapsulant;
(iii) first and second restraint zones are forced together, to mesh first and second closure profile; And
(iv) make the first and second closure profile sealing air paths by encapsulant.
22. method as claimed in claim 21, wherein, described encapsulant is an oil.
23. method as claimed in claim 21, wherein, described encapsulant is a gel.
24. method as claimed in claim 21, wherein, described encapsulant is selected from the group that comprises following material: silicone oil, mineral oil, monoglyceride, aliphatic acid, polybutene, vaseline and silicon gel.
25. method as claimed in claim 21, wherein, described storage bag further is provided with one-way valve element, and this one-way valve element is installed on the sidewall, and communicates with internal capacity.
CNA2006800250833A 2005-05-20 2006-05-22 Closure device for storage bag Pending CN101217896A (en)

Applications Claiming Priority (2)

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US68338705P 2005-05-20 2005-05-20
US60/683,387 2005-05-20

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EP (1) EP1881770A4 (en)
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KR (1) KR20080024478A (en)
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AU (1) AU2006250049A1 (en)
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WO2006127739A2 (en) 2006-11-30
EP1881770A2 (en) 2008-01-30
AU2006250049A1 (en) 2006-11-30
WO2006127739A3 (en) 2007-03-01
EP1881770A4 (en) 2009-12-02
US20080189913A1 (en) 2008-08-14
KR20080024478A (en) 2008-03-18
CA2608947A1 (en) 2006-11-30
JP2008540065A (en) 2008-11-20

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