CN101977823A

CN101977823A - Dispensing closure with orifice external seal

Info

Publication number: CN101977823A
Application number: CN2009801099524A
Authority: CN
Inventors: C·M·布隆达希
Original assignee: Seaquist Closures LLC
Current assignee: Seaquist Closures LLC
Priority date: 2008-03-20
Filing date: 2009-03-04
Publication date: 2011-02-16
Also published as: EP2252526A2; AR071023A1; CA2717928A1; MX2010009613A; AU2009226173A1; US20090236339A1; RU2010142892A; WO2009117053A3; WO2009117053A2; BRPI0909414A2; EP2252526A4

Abstract

A dispensing closure system (20, 20A) is provided for a container (22) that has an opening (27) to the container interior. The system includes a closure body (30, 30A) with a dispensing orifice (50, 50A) surrounded by an annular sealing surface (54, 54A). A removable cover (31, 31A) includes a seal (80, 80A) that is attached to the annular sealing surface (54, 54A) and extends across the orifice (50, 50A) to occlude the orifice (50,50A). The cover (31, 3 IA) also includes a tab (82, 82A) having a free end (84) that can be gripped by the user and pulled to remove the seal (80, 80A) from the sealing surface (54, 54A) and carry the cover (31, 31A) away from the orifice (50, 50A).

Description

Distribution closure member with aperture outside seal

Technical field

The present invention relates to be used to distribute the container-closure of stream material.The present invention relates more particularly to distribute loop system, and it is particularly suitable for hand-held container, and it can or can not comprise the lid that can open and close.

Background technology

Fluent material, comprise that liquid, emulsifiable paste, powder etc. can be packaged in the container with distribution closure member routinely, distribute closure member to comprise closure body, closure body is placed on the open end of container and it limits the one or more dispensing aperture that are communicated with internal tank.Usually provide cap or lid to be used for when container does not use stopping up the main body dispensing aperture closing on this main body.If container drops or tumbles, this can prevent to overflow.Lid also can help to keep inclusion fresh and can reduce containment ingression.

Inventor of the present invention finds a kind of novel loop system that is used to distribute the stream material that comprises liquid, the favourable characteristics that prior art was not instructed or do not imagined before wherein this loop system comprised.

Summary of the invention

According to the present invention, a kind of improved distribution loop system that is used for container is provided, this container has the opening that leads to internal tank, can store stream material at internal tank.This system comprises that closure member matrix or main body are to extend from container in vessel port place (with in vessel port).Closure body has the dimension Distribution of reducing aperture to be communicated with internal tank (but this inside weighting substance, this material can distribute by the aperture).Closure body also has the peripheral seal surface around dispensing aperture.This system also comprises the removable member or the cover of initial obstruction dispensing aperture.Cover comprises and adheres to the lip-deep sealing of peripheral seal removedly.This cover has the pull tab of extending from sealing.This pull tab has free end, and free end can and spur to remove sealing and to remove this cover from dispensing aperture from closure body peripheral seal surface by user's grasping.

Distribute loop system can comprise that also optional lid is used for moving between (1) off position and (2) open position, at off position, lid seals described dispensing aperture and cover on the closure body top, and at open position, lid away from dispensing aperture and cover to allow to remove cover.If lid is provided, closure member also can have the hinge that connects lid and closure body.

Distribute the loop system member can be designed to during the loop system manufacturing, be easy to hold the assembly of member.

Distribute loop system can possess following such design: it adapts to efficient, high-quality, big output manufacturing technology with the reject rate that reduces.

Distribute loop system can be designed to alternatively make it to be applicable to that multiple routine or special container, these containers have multiple routine or special container mouth, comprise conventional screw thread or fasten the attaching configuration.Distribute loop system also can be incorporated in whole container/closure member (for example, having the pipe of single-piece top and bottom and the dispensing aperture in one of these ends), perhaps be incorporated in conjunction with (for example, by heatsealing or adhesives) in the closure member of container.

By detailed description of the present invention hereinafter, by claims, and accompanying drawing, multiple other advantage of the present invention and characteristics will become apparent.

Description of drawings

Accompanying drawing constitutes the part of specification sheets, in institute's drawings attached, adopts similar Reference numeral to represent similar parts,

Fig. 1 is the fragment isometric view of first embodiment of loop system of the present invention, and it is the form according to first embodiment that independently distributes closure member of preferable use of the present invention, and closure member is illustrated and is installed on the container, and the closure member lid is closed;

Fig. 2 is the fragment isometric view that is similar to Fig. 1, but in Fig. 2, and closure member is shown as lid and is in the condition of opening and cover and is sealed on the spout on the dispensing aperture;

Fig. 3 is the section drawing that intercepted of the plane 3-3 in Fig. 2 substantially;

Fig. 4 is the fragment isometric view that is similar to Fig. 2, but Fig. 4 illustrates from spout and mentions cover to open the aperture;

Fig. 5 is the view that is similar to Fig. 3, but in Fig. 5, be illustrated in be sealed to cover on the spout before, the closure member before being installed on the container before the close cap and with closure member;

Fig. 6 is the isometric view of ribbon or bar carries product volume, dish or reel, can be from this ribbon or band cutting or this dispensing aperture cover of punching press;

Fig. 7 is the amplification fragment isometric view of front end of the part of bar carries product shown in Figure 6;

Fig. 8 is the planar view of the leading section of bar carries product shown in Figure 7, and Fig. 8 also illustrates discoid, its can be in band punching or cutting so that Fig. 2, Fig. 3 and circular cover shown in Figure 4 to be provided;

Fig. 9 is the isometric view according to second embodiment that independently distributes closure member of preferable use of the present invention, and closure member is illustrated the condition of closing that is in before being installed on the container;

Figure 10 is the isometric view that is similar to Fig. 9, but in Figure 10, and closure member is illustrated lid and is in as the molded condition of opening and cover and is sealed to spout on the dispensing aperture;

Figure 11 is the section drawing that intercepted of the plane 11-11 in Figure 10 substantially;

Figure 12 is the isometric view that is similar to Figure 10, but Fig. 2 illustrates from spout and mentions cover to open this aperture; And

Figure 13 is the section drawing that is similar to Figure 11, but enclosed member is illustrated and is in exploded relationship in Figure 13.

The specific embodiment

Though the present invention can make embodiment be many multi-form, this specification sheets and accompanying drawing only disclose and have been a kind of concrete form of example of the present invention.But the present invention's expection is not limited to the embodiment of description like this.Scope of the present invention is pointed out in appended claims.

In order to be easy to describe, many accompanying drawings of the present invention are shown have showed the independently removable distribution closure member that is in typical orientation that distributes loop system to comprise, when container is erectly stored on its base portion, closure member will be in container top, and use such as this position of term reference such as top, bottom, level.But will understand, loop system of the present invention can be made, store, transport, use and sell in the orientation different with orientation described herein.

Distribution loop system on the container

Preferred first embodiment of distribution loop system of the present invention shown in the drawings and in Fig. 1 substantially with Reference numeral 20 mark.In the illustrated embodiment, loop system 20 is provided as the form of first embodiment that independently distributes closure member 20, and it is suitable for installing or is installed on the container 22, and container 22 comprises stream material usually.

Container 22 comprises neck 26 (Fig. 2), and neck 26 partly extends upward from the hollow body of container.Neck 26 limits the opening 27 (Fig. 3) that leads to internal tank.

In preferred embodiment shown in Figure 3, container neck 26 has outer external screw thread 29 and distributes loop system 20 to engage.The base portion of container 22 can have any suitable configurations, and the neck 26 that projects upwards can have cross-sectional sizes and/or the shape different with the container body part.(alternatively, container 22 itself need not to have neck 26.Alternatively, container 22 can only be made of the main body of being with opening).

Although container 22 itself does not form the part of the most extensive aspect of the present invention itself, at least one portion that will understand distribution loop system 20 of the present invention selectively can be provided as the integral part or the extension at container 22 tops.Distribute loop system also can be incorporated in whole container/closure member (for example, having the pipe of whole top and bottom and the dispensing aperture in one of end), perhaps be incorporated in conjunction with (for example, by heatsealing or adhesives) in the closure member of container.But, in preferred illustrated embodiment, distributing loop system 20 is fully independently article or unit (for example, distributing closure member 20) and be suitable for removedly, or non-removable being installed on the container 22 of previous manufacturing, the previous container of making 22 had the opening 27 that leads to internal tank.Hereinafter, distribute loop system or distribution closure member 20 will be called closure member 20 more simply.

The illustrated embodiment of closure member 20 is applicable to the container 22 with opening 27, and opening 27 is provided to internal tank and is contained in the access of wherein the product material of stream material form (that is, with).Closure member 20 can be used for dispensable materials, include, but is not limited to liquid, suspending fluid, compound etc. (such as, the Foods or drinks product, the personal care product, industry or household cleaning product, perhaps other material goods (for example, being used to relate to movable goods such as manufacturing, commerce or family expenses maintenance, building, agricultural, medical treatment, military operations)).

The container 22 that closure member 20 can be used for is generally squeezable container, and it has one or more flexible walls, thereby flexible wall can force product to come out by the closure member of opening from container with the internal pressure that increases in the container by user's grasping and extruding or compression.This flexible cell wall has sufficient intrinsic rebound resilience usually makes that wall of container turns back to its normal unstressed shape when removing squeese pressure.This squeezable container is preferred in many application but may be also nonessential or preferred in other is used.For example, in some applications, rigid container (comprises may to wish to adopt substantially, but be not limited to, glass container) and in seclected time utilize piston or other compression system that internal tank is pressurizeed, thus the external environment condition pressure that perhaps reduces the closure member exterior circumferential by the closure member opened with the material sucking-off.

The general layout of closure member member

As seeing in Fig. 3, the present most preferred form of closure member 20 comprises two basic building blocks: (1) Unitarily molded main body or matrix 30, and (2) removable containment member or cover 31.Alternatively, and as seeing in preferred illustrated embodiment, closure member 20 also can comprise lid 32 and lid 32 is connected to hinge 34 on the closure body 30.

In the preferred form of embodiments of the invention, provide lid 32 to close and to cover closure body 30 tops.Removable lid 32 adapts to the distribution of product from container 20 of flowing with the top that exposes closure body 30.Lid 32 can move between the off position (as shown in Figure 1) on (1) main body 30 and (2) open position (as shown in Figure 2).In the illustrated embodiment, lid 32 is hinged to main body 30 so that the pivot of adaptation lid 32 between off position and open position moves.

In illustrated compression, wherein provide lid 32 and wherein lid 32 utilize hinge 34 (Fig. 2) to be connected to closure body 30, hinge 34 can be any adequate types.A kind of hinge 31 forms that can advantageously use are in U.S. Patent No. 6,321, the snap effect type of describing in 923.Also can use the hinge of other type.In some applications, can omit hinge fully, and not need lid 32 to be connected to main body 30 fully.In other is used, can wish to omit fully lid 32.

Contemplate many application of adopting closure body 30 and lid 32 at present by utilizing one or more suitable thermoplastic materials molded and realize easily.In the illustrated embodiment, closure body and lid can form by suitable thermoplastic material is molded, such as (but being not limited to) polypropylene.Closure body and lid can form by one or more different materials are molded.Material can have identical or different color and quality.

Additional structure and manufacturing details

As appreciable in Fig. 2 and Fig. 3, main body 30 comprises platform 40 and skirt section 42, and extend downwards from closure body platform 40 in skirt section 42.As appreciable in Fig. 2, the outward flange of platform 40 comprises two breech lock fins 41, breech lock fin of every side.In a preferred embodiment, as appreciable in Fig. 2, the upper limb in skirt section 42 limits peripheral shoulder 43, and the outside face in skirt section 42 comprises vertical groove 44.As appreciable in Fig. 3 and Fig. 5, negative thread 46 was threadably to engage external screw thread 29 (Fig. 3) outside the container neck in the inside in skirt section 42 limited when distributing closure body 30 to be installed to container neck 26.

Alternatively, closure body skirt 42 can possess some other container connection devices, such as fastening fin or groove (not shown) to engage container neck groove or fin (not shown) respectively.And closure body skirt 42 alternately for good and all is attached on the container 22 by induction melting, ultrasonic fusing, gummed etc., depends on the material that is used for closure body 30 and container 22.In another alternate design (not shown), closure body 30 can form the global facility or the extension of container 22.

In preferred embodiment shown in Figure 3, provide annular " crab claw " flexible seal member 47 with extend downwards from the bottom side of closure body platform 40 come airtight container neck 26 towards last annular surface.Also can adopt other Seal Design, comprise that routine " V-arrangement " sealing, conventional " connector " seal, perhaps some other such routine or special seal depend on application-specific.

Closure body skirt 42 can have any suitable configurations with neck that projects upwards 26 that adapts to container 22 or any other parts that adapt to the container of admitting in the customized configuration of closure body skirt 42, even container itself does not have neck.The main portion of container 22 can have the cross sectional shape different with container neck 26 and closure body skirt 42.Closure body skirt 42 can be suitable for being installed in the stream material container handling system of other type.

In illustrated embodiment of the present invention, the container neck in the closure body skirt 42 admits path to have cylindrical configuration substantially, but comprises inwardly outstanding screw thread 46.But closure body skirt 42 can have other configuration.For example, closure body skirt 42 can have prism or polygon configuration, and it is suitable for being installed on the top of the container neck with polygon configuration.This prism or polygon configuration will be unsuitable for using the screw thread attaching, but other attaching means can be provided, such as fastening fin and groove arrangement, adhesives etc.

To shown in Figure 5, closure body 30 has the cylindrical substantially dispensing aperture 50 that reduces size as Fig. 3, and this dispensing aperture 50 is defined in the columniform substantially spout 52, and columniform substantially spout 52 projects upwards from the platform 40 of closure body 30.(and aperture 50 can be communicated with attached container 22 inner foundation of main body 30 thus) set up and be communicated with to dispensing aperture 50 between the outside of closure body 30 and inside.Aperture 50 provides flow passage or vent pathway, and when lid 32 was opened and removed cover 31, the inclusion of container 22 can be by flow passage or vent pathway discharging.Spout 52 tops have around aperture 50 towards on peripheral seal surface 54.

As appreciable in Fig. 3, the upper outer edges of spout 52 has chamfering or frusto-conical surface 56, and chamfering or frusto-conical surface 56 are downward and outward-dipping from the outward flange on peripheral seal surface 54.In other application (not shown), can omit chamfer surface 56.In a preferred embodiment, limit cylindrical surface 58 substantially at the lower edge of frusto-conical surface 56 and spout 52 outsides between the platform 40.The feature of cylindrical surface 58 can be below spout annular surface 54 and frusto-conical surface 56 extends.In other application (not shown), aperture 50 (and/or spout 52) can be non-cylindrical.

As appreciable in Fig. 2 and Fig. 3, lid 32 comprises roof or cross wall 60 and peripheral wall 62, when lid 32 is closed these closure body platform 40 tops, roof or cross wall 60 and peripheral wall 62 have outstanding downwards orientation and limit towards under end surfaces 63 to be assemblied on the closure body annular shoulder 41.As appreciable in Fig. 2 and Fig. 3, lid 32 also has annulus 64 substantially, and annulus 64 is outstanding from the transverse wall 60 on lid 32 bottom sides.Sleeve 60 also preferably includes ring seal fin 68 (Fig. 2 to Fig. 5).

Cover skirt 64 and/or closure body spout 52 have sufficient rebound resilience so that adapting to lid 32 is closed on the main body 30, and as shown in Figure 1, wherein cover skirt sealing fin 68 can be positioned on the spout cylindrical surface 58 so that the sealing of anti-leak basically to be provided.Sealed engagement between the closure body spout 52 and the cover skirt 64 of closing provides more resistances to uncover 32 subsequently.The additional resistance that lid is opened is also preferably provided by other coefficient characteristics in lid 32 and the main body 30.Particularly, each inboard of lid flanges 62 has inwardly outstanding breech lock fin 76 (Fig. 2).When lid 32 is closed, force lid breech lock fin 76 through closure body breech lock fin 41.When lid 32 is on closure body 30 (Fig. 1) when closing condition, each lid breech lock fin 76 towards last surface below and be suitable for engaging above closure body breech lock fin 41 towards under the surface.Closure body 32 and/or lid flanges 62 have sufficient flexibility with open with closing movement during

fin

41 and 76 adapt to temporary transient elastic deformation when moving through each other.Also alternately use other conventional or special breech lock design.In some applications, they can not need fully latch system (particularly hinge 34 for " snap effect " type and have very strong biasing force and/or between cover skirt 64 and closure body spout 52, exist under the situation of strong friction sealed power).

Finger admits surface or thumb to admit surface 79 (Fig. 1 and Fig. 3) can be located at closure member lid 32 front portions alternatively.For uncover 32, the user initially utilizes thumb or finger upwards to push away on lid surface 79.

Comprising that terminal user or other user with the stream material product in the packing of the container of closure member of the present invention will come initial opening closure member 20 to expose spout 52 by mentioning lid 32, cover 31 is sealed on the spout 52 at first.If closure member is not for to have the type of lid, the user will at first run into the closure member that has the cover 31 that is exposed under the eyesight so, but cover 31 initial sealings are to spout 52 tops.

As can seeing in Fig. 3, cover 31 comprises body portion or seals 80 and from sealing 80 pull tabs 82 of extending.Pull tab 82 has free end 84, but user's grasping free end 84 and spur free end 84 to remove sealing 80 from closure body peripheral seal surface 54 and to remove cover 31 from dispensing aperture 50 and expose dispensing aperture 50 (referring to Fig. 4).

In preferred illustrated embodiment, sealing 80 is substantially discoid, and its external diameter is equal to or less than the external diameter of annular seal surface 54.In addition, in a preferred embodiment, pull tab 82 has semicircle substantially configuration.

In a preferred embodiment, the peripheral limit (it overlays on the spout peripheral seal surface 54 and is attached to spout peripheral seal surface 54) at least of the bottom side of cover sealing 80 is attached on the spout annular seal surface 54 by heat seal or thermal.Can use the attaching of other form, such as adhesives etc.In a preferred embodiment, spout annular seal surface 54 (its bottom side with the periphery of cover sealing 80 contacts) preferably has about 0.060 inch width or takes up an area of size (land dimension).Find that this provides enough big mating surfaces, for typical consumer applications, this can gratifying integraty be attached on the mating surfaces sealing 80 and this allows customer subsequently cover 31 to be drawn back from spout 52.

According to the cover 31 of preferred form of the present invention be by office at 125Edward Street, Aurora, Ontario, the Unipac Company (ITWcompany) of Canada L4G 1W3 is with title " unipac Lift ' n ' Peel ^TMLP-E " the coiled material product sold makes.This product is shown in Fig. 6 to Fig. 8.In Fig. 6, the coiled material product marks and is illustrated with Reference numeral 90 substantially has outward extending deploying portion, ribbon or band 92.As appreciable in enlarged drawing shown in Figure 7, band 92 is included in the matrix that extends on the strip width or hermetic unit 80A and also comprises pull tab part 82A.Pull tab part 82A extends from band 92 width central authorities along broken line or hinge line 94.

According to Unipac literature, the UniPac coiled material product of above being discussed comprises the salable layer of matrix, polyester layer, aluminium foil layer, polyethylene layer, polyester pull tab, polymeric binder layer and laminated polyester film.The salable layer of matrix provides the bar carries product together with aluminium foil layer, and this carries product has by the thermosealed ability of conventional induction heat water-tight equipment.According to Unipac literature, the salable layer of being located at bar carries product bottom is suitable for being sealed on the various substrates, comprises polypropylene, polyethylene, polyvinylchloride, polystyrene, polyester and ABS.Unipac literature points out that this product is " the interior sealing of band pull tab ", and it provides the advantage that allows to use conventional drift and set of molds when to the cap lining to cap maker.

According to the present invention, individual cover 31 can form the circular configuration of each cover 31 and form semicircle pull tab 82 from band 92 cuttings or punching press.

Closure member maker molded closure part main body (and lid, if closure member comprises lid) and keep closure member and be in and open configuration (Fig. 4) so that can receive from one of cover 31 of coiled material band 92 punching presses.Can adopt suitable conventional liner placement devices and induction sealing unit to be positioned over cover 31 on the closure member spout 52 and then cover be sealed 80 (Fig. 3) and be thermally bonded on the peripheral seal surface 54 of closure body spout 52.This liner punching apparatus, liner placement devices and induction sealing unit can be any suitable routine or specific type, and its details does not constitute part of the present invention.

According to the present invention, closure member maker is from coiled material band 92 cutting or each cover 31 of punching press, make cover 31 have certain size and make when cover 31 is applied on the aperture 50 of spout 52 that the periphery outside (laterally) that there is no cover 31 extends beyond the sealing surfaces edge on the spout top.This provides clean assembly attractive in appearance.In alternative form of the present invention (not shown), cover 31 can have non-circular shape.And closure member itself also nonessentially has a spout 52.Annular seal surface alternately directly is defined on the part of closure body platform 40.

According to preferred form of the present invention, closure member maker can fill the merchant to product the closure member of finishing 20 that is in the condition of closing is provided.Product is filled the merchant and is generally to bottle or other vessel filling stream material product and afterwards closure member is installed on company on institute's filling containers.For the routine encapsulation of some type, closure member maker provides each closure member of being with liner to filling the merchant, and liner is filled in closure member inside in (that is, below the dispensing aperture in platform) below the closure body platform.Then, filling the merchant must be installed on the container closure member (having at the liner below the closure body platform) to compress liner between closure body flat-bed bottom side and container top.Then, filling the merchant must make liner be heat sealed on the container top of closure body platform below by induction sealing device by conveying and packaging.

On the contrary, the closure member of closing that the present invention allows closure member maker to finish is fed to fills the merchant, and the aperture has covered the thermal cover or sealing makes that filling the merchant need not produce and use heat seal equipment.

Compare with the typical conventional liner of being located at closure body platform below and must extend on the whole big opening of the container that closure member is installed, the present invention also allows to use diameter little a lot of heat seal cover or sealing.This can making than the use of major diameter liner by induction sealing device leak free routine after closure member is installed on the container filled manufacturing line and slowed down.On the contrary, in the present invention, be applied to the discussing and to move its filling manufacturing line with more speed of less spout on the closure member (or other limits the zone in aperture) than feasible filling of the obducent use of minor diameter by closure member maker.

The present invention uses customer or user that following advantage is provided to terminal: need not initially remove closure member from container and remove the sealing liner with the sealed liner that exposes on the container top.For the present invention, need not remove closure member, and terminal uses the customer to remove the sealing cover easily from closure member spout top by easily mentioning this pull tab.

Because the present invention adopts sealable cover, sealable cover can be much smaller than conventional liner, conventional liner extends on the container entire top fully, can there be marked difference in this aspect material cost, therefore system of the present invention can have than the low cost of this conventional vessel top liner systems.

Alternate embodiment

Second embodiment of loop system of the present invention is shown in Fig. 9 to Figure 13.Second embodiment of this system comprises and independently distributes closure member 20A that it is suitable for being installed on the container neck (not shown).Container can have any suitable configurations.A kind of container of suitable species is at container shown in Figure 3 22 and is above launching to describe with reference to first embodiment of closure member 20.

As appreciable in Figure 10, closure member 20A comprises whole matrix or main body 30A, removable containment member or cover 31A and the lid 32A that is connected to main body 30A by hinge 34A.Closure member 20A also comprises valve 36A and seat ring 38A, in Figure 11 and Figure 13 as seen.

The second embodiment closure body 30A is similar to above referring to figs. 1 to the described first embodiment closure body 30 of Fig. 5.But, the spout 52A (Figure 13) of the second embodiment closure body 30A is positioned at the center of circular closure part main body 30A substantially, but not towards the front portion of closure body, the first embodiment closure member spout 52 is positioned at closure body front portion (comparison diagram 2 and Figure 10).The second embodiment closure body spout 52A projects upwards and limits dispensing aperture 50A (Figure 13) so that flow passage or vent pathway to be provided from the platform 40A of closure body 30A, and inclusion can flow by flow passage or vent pathway (not shown) from the attached container of closure member 20A (not shown).Below platform 40A, closure body 30A limits negative thread 46A threadably to engage the cooperation external screw thread of container.

As appreciable in Figure 12 and Figure 13, spout 52A top have around the 50A of aperture towards on peripheral seal surface 54A.The upper outer edges of spout 52A has curved surface 56A (Figure 13), and its outward flange from peripheral seal surface 54A is outside and downward-sloping.In the preferred form of second embodiment of closure member 20A, spout 52A has the outside face between last curved surface 56A and closure body platform 40A, and this outside face limits cylindrical surface 58A (Figure 13) substantially.

On spout 52A inside, spout limits substantially frusto-conical surface 59A (Figure 13) to engage valve 36A, describes in detail hereinafter.

The second embodiment closure member lid 32A has substantially and the identical structure of the first embodiment closure member lid 32 shown in Figure 5 mentioned above, has the annulus 64A that is positioned at lid 32A center (but not near front edge) except the second embodiment closure member lid 32A to be assemblied on the spout 52A and sealing spout 52A when the close cap 32A.

Valve 36A is adapted to be mounted among as shown in figure 11 the closed spout 52A.But the preferred form of valve 36A is the slit-type valve of pressure actuated, flexibility, and it is fixed on spout 52 inboards by maintenance ring 38A, describes in detail hereinafter.

Valve 36A preferably is molded as integral structure by the flexible resilient material.This material can comprise elastic body, and the thermosetting polymer such as synthetic comprises silicone rubber, such as the silicone rubber of being sold with brand name D.C.99-595-HC by U.S. Dow Corning Corp..Another suitable silicone rubber material is sold in the U.S. with title Wacker 3003-40 by Wacker Silicone Company.These materials all have the specified hardness of 40 Shore A hardness.Valve 36A also can be by other thermoset material or by other elastomeric material or thermoplastic polymer or thermoplastic elastomer is molded forms, comprise those materials based on following material: thermoplastic propene, ethene, urethane and styrene comprise the corresponding body of its halo.

In illustrated compression, valve 36A has the valve design-calculated configuration and the operating characteristics that can buy on the market, and is disclosed in 289 basically as in U.S. Patent No. 5,676, with reference in U.S. Patent No. 5,676, and disclosed valve 46 in 289.The operation of such valve is also by with reference to U.S. Patent No. 5,409, and the valve-like that the Reference numeral 3d in 144 is marked is described further.The description of these two patents is with degree of correlation and do not have inconsistent degree and be attached to herein.

Valve 36A be rest position (closing as shown in the figure) flexible and that close in (1) in the stand up position of Figure 11 and Figure 13 with (2) movable open position (not shown) between change and dispose.Valve 36A comprises flexible middle part or head 160A (Figure 13).When actuated valve 36A not, head 160A has recessed configuration (when from the visual observation of closure member spout 52A).Head 160A preferably has the distribution slit (not shown) that intersects on the orthogonal plane of two equal lengths, and these slits limit normally closed dispensing aperture together.Intersect slit and in recessed central head 160A, limit four flap sheet or the limbs of fan-shaped equidimension substantially.When the pressure reduction value was enough big, flap sheet was gone up the pressure reduction that increases in response to valve 36A and is outwards opened from the slit intersection point, with in U.S. Patent No. 5,409, and the well-known way described in 144.

As appreciable in Figure 13, valve 36A comprises skirt section or sleeve 164A, and skirt section or sleeve 164A extend from valve head 160A.Sleeve 164A extends with dihedral degree orientation when idle condition (non-ly actuate when valve 36A is in) and merges with the thicker peripheral flange 170A that enlarges, and peripheral flange 170A has dovetail cross-sectional shape (as observed in Figure 13) substantially.

Be installed among the spout 52A in order to adapt to valve 36A, the top surface of dovetail valve flange 170A has frustum of a cone configuration and the angle identical with spout frusto-conical surface or seat 59A.Other surface of valve flange 170A (that is basal surface) is engaged and clamping (Figure 11 and Figure 13) by maintenance ring 36A.Maintenance ring 38A comprise outward or the axial inside face that engages valve flange 170A at a certain angle towards last frustum of a cone ring gripping surface 172A (Figure 13) (promptly, basal surface), the angle coupling of the adjacent inner surface of the dovetail of this angle and valve flange 170A configuration.

The periphery of maintenance ring 38A comprise outwards outstanding flange 178A (Figure 13) with annular ridge 142A (Figure 13) snap-fit engagement, annular ridge 142A is radially inwardly outstanding on spout 52A inboard.Valve 36A can be inserted in the open bottom end of spout 52A with maintenance ring 38A.Valve 36A is installed on the maintenance ring clamping surface 172A at first.Then, maintenance ring 38A can be pushed through spout fin 142A, because maintenance ring 38A and/or spout 52A have abundant flexibility with maintenance ring flange 178A through and the temporary transient elastic deformation that adapts to parts when surpassing spout fin 142A to form snap-fit engagement, snap-fit engagement is against spout frusto-conical surface 59A compression or clamping valve flange 170A.

Cover 31A have with above about Fig. 1 to the identical 26S Proteasome Structure and Function of the described cover of first embodiment of closure member 20 shown in Figure 8 31.For this reason, the second embodiment closure member cover 31A pull tab 82A (Figure 12) that has body portion or sealing 80A and extend from sealing 80A.Pull tab 82A can and spur to remove sealing 80 from closure body peripheral seal surface 54A and to remove cover 31A to expose dispensing aperture 50A (Figure 12) from dispensing aperture 50A by user's grasping.The detailed configuration of cover 31A, structure and making cover 31A and the mode of second embodiment that cover 31A is applied to closure member 20A are with above the closure member cover 31 described situations about illustrated first embodiment of Fig. 1 to Fig. 8 are identical.

If need, can revise second embodiment of closure member 20A by omitting lid 32A and hinge 34 together.

Observe easily from detailed description of the present invention above and diagram thereof and under the situation of true spirit that does not depart from novel concepts of the present invention or principle and scope, can realize multiple other variants and modifications.

Claims

A distribution loop system that is used for container (22) (20,20A), described container (22) has the opening (27) that leads to internal tank, can be at described internal tank storage stream material, described distribution loop system (20,20A) comprising:

(A) closure body (30,30A), it locates to extend from described container (22) in described vessel port (27), described closure body (30,30A) having (1) reduces the dimension Distribution aperture (50,50A) to be communicated with described internal tank, (2) is in described dispensing aperture (50,50A) peripheral seal surface on every side (54,54A); And,

(B) stop up described dispensing aperture (50, removable cover (31 50A), 3IA), described cover (31,31A) comprise adhere to removedly described peripheral seal surface (54, the 54A) sealing (80 on, 80A), described cover (31,31A) have from described sealing (80, the 80A) pull tab (82 of Yan Shening, 82A), described pull tab (82,82A) have free end (84), described free end (84) can be by user's grasping and pulling with from closure body peripheral seal surface (54,54A) remove described sealing (80,80A) and from described dispensing aperture (50,50A) remove described cover (31,31A).
2. distribution loop system according to claim 1, it also comprises:

(A) lid, it is used for moving between (1) off position and (2) open position, and at off position, lid is at described dispensing aperture of described closure body top seal and cover, at open position, lid away from described dispensing aperture and cover to allow to remove described cover; And,

(B) hinge, it connects described lid and described closure body.
3. distribution loop system as claimed in claim 1, it is used for container, described container has annular top, annular top limit (1) opening and (2) described parameatal outside external screw thread, and wherein

Described loop system is to distribute closure member, distribution closure member (1) is independent of described container but can be attached on the described container releasedly around described vessel port, and (2) comprise (A) described closure body, and the described removable cover that (B) stops up described dispensing aperture;

Described closure body has the cylindrical skirt substantially of hollow, and it has interior negative thread threadably to engage the described external screw thread on the described container; And

Described closure body comprises (a) platform at top, described skirt section, and (b) spout, its from described platform outwards outstanding be limited to around the described dispensing aperture described peripheral seal table to.
4. distribution loop system according to claim 1, wherein said closure body comprises spout, spout (1) is outwards outstanding around described dispensing aperture, and (2) have far-end, and described far-end limits the described peripheral seal surface of annular seal surface form around described dispensing aperture.
5. distribution loop system according to claim 4, wherein said spout have the outside cylindrical surface substantially below described annular seal surface.
6. distribution loop system as claimed in claim 5, wherein:

(A) described loop system comprises that also lid is to move between (1) off position and (2) open position, at open position, described lid seals described dispensing aperture and cover on described closure body top, at open position, described lid away from described dispensing aperture and cover to allow to remove described cover;

(B) described loop system also comprises hinge, and hinge connects described lid and described closure body; And

(C) described lid comprises that annulus is used for substantially (1) and surrounded the described removable cover on described spout far-end and the described spout when described lid is in described off position before removing described cover from described annular seal surface, and (2) engage described spout outside cylindrical surface hermetically when described lid is in described off position.
7. distribution loop system according to claim 4, wherein said sealing is substantially discoid, and the external diameter of described discoid is equal to or less than the external diameter of described annular seal surface.
8. distribution loop system according to claim 1, wherein said peripheral seal surface is an annular seal surface, it has and is not less than about 0.060 inch width.
9. distribution loop system according to claim 4, but wherein said loop system also comprises the valve of the pressure actuated that is installed on the inherent described peripheral seal lower face of described spout.
10. distribution loop system according to claim 9, wherein said loop system also are included in the maintenance ring that keeps described valve in the described spout.
Bending or chamfer surface around 11. distribution loop system according to claim 1, wherein said spout have on described peripheral seal surface.
12. distribution loop system according to claim 1, wherein:

The described discoid substantially that is sealed into; And

Described pull tab has semicircle substantially configuration.