CN1878700A

CN1878700A - Fitments

Info

Publication number: CN1878700A
Application number: CNA2004800334026A
Authority: CN
Inventors: 亨宁·冯·施普雷克尔森; 彼得·迈克尔·麦古
Original assignee: Bapco Closures Research Ltd
Current assignee: Bapco Closures Research Ltd
Priority date: 2003-11-14
Filing date: 2004-06-25
Publication date: 2006-12-13
Also published as: GB0326619D0; EP1687212B1; DK1687212T3; TW200523178A; PL1687212T3; DE602004012441D1; GB2408040A; NZ546726A; MY130704A; AU2004295141A1; BRPI0416043A; RU2346863C2; EP1687212A1; TWI311971B; DE602004012441T2; ATE388900T1; US20070095834A1; RU2006118724A; DE602004012441T8; ZA200603666B

Abstract

A fitment preferably for a carton has a base flange and a pour spout closed by a screw on overcap. The base flange has a barrier foil coated on both sides with a plastic layer embedded in a sacrificial receiving wall surrounding the periphery of the base flange.

Description

Accessory

Technical field

The present invention relates to be used for the closure member of the container of aseptic and long shelf-life (ESL), relate in particular to the closure member that is used for carton box.

Background technology

In non-sterile container, be well known that the carton accessory that uses the wall that extends through carton box.These accessories are configured to provide one to topple over ozzle, and the closure member of a resealable is provided, such as screwed ozzle and enclosing cover.They are generally made by injection plastic.This accessory can also provide arrogates to oneself out indication (tamper evidence), is connected to separable on the fitment body such as a lower edge with enclosing cover and arrogates to oneself out index strip (tamper).Usually the diaphragm that can utilize draw ring to remove is set in the inside of ozzle.General accessory will have a base flange and a cylindrical ozzle.

This accessory is inserted into and passes one in the hole that carton top cuts out as the assembling that the is equipped with enclosing cover parts that finish.This accessory passes described hole from the inboard of open top in pouring process.Greater than the base flange of the diameter in described hole, keep somewhere in the carton inboard.Utilize supersonic welding to fetch base flange is welded on the carton, and described accessory is fixed on correct position.Such accessory is widely used for making that roof type carton box can be resealed.They generally are used to need not the fresh milk and the fruit drink of aseptic packaging.

Aseptic packaging

In the sterile filling process, need before can, utilize UHT technology that material is handled.Material continues the very short time (4 second) and stands high temperature (140 ℃), and is cooled to a temperature between room temperature and 4 ℃ subsequently.In case cooling, material must remain under the aseptic condition, therefore can not be exposed to surrounding air or bacterium.Carton and accessory also must be through cleaning and sterilizations, general using hydrogen peroxide or peracetic acid, and they can vapor away from these assemblies after a while.Carton carries out can and sealing subsequently in gnotobasis.Packing material also must enough closely be sealed, to prevent to suffer once more bacteria attack.This technology is very effective for the material that long shelf-life is provided.The investment of this filling apparatus is quite big.

The ESL technology of the package includes such as other such technology of microfiltration, so that guarantee to exist minimum germ in material.

Aseptic and the obvious characteristic ESL carton is to have a continuous barrier layer.This layer is to be used to prevent that bacterium, germ, yeast or fungal spore from entering in the container and be used to provide gas barrier necessary.Because need there be a precutting hole in existing carton accessory on the carton blank material, so obviously can't use.

The carton that is used in the aseptic packaging technology generally is made of several layers.In one example, have seven layers and form aseptic packages.From the outside, they are polyethylene, adhesive agent, paper, adhesive agent, aluminium foil, adhesive agent and polyethylene.Aluminium foil provides a barrier layer.Described each adhesive layer is used for material is bonded together, and described polyethylene layer is used to provide finish coat.These hierarchies are known as combination board.Described barrier layer also can be made by EVOH alternatively.

Initial aseptic carton is the combination board tetrahedron, becomes square brick afterwards, and it is difficult to open and can't reseals.Aseptic carton all has the carton accessory at present, these carton accessories as carton box provide resealable, have a closure member of arrogating to oneself out indication screw thread enclosing cover.In order to keep described barrier layer, two kinds of methods have been taked.

In first method, before extrusion coating paper slab material and an inboard barrier layer lamination are got up, cut out a hole on outside ply of paper in the base material and the plastic layer.Described accessory is applied in the outside of carton subsequently, and must be used to run through described inboard barrier layer and cut, tear or the mechanism of stamping-out in conjunction with a kind of.In the second approach,, described combination board is carried out indentation or reduction, but do not penetrate described barrier layer in the position that is about to settle the carton accessory.Therefore, must utilize cutting, tear or stamping-out mechanism wear out in the combination board all the layer.At this mechanism, many kinds of design plans have been proposed.Comprise that pivot rotaring lever, driving gear are passed down through the ratchet of cardboard, need the user with the feedthrough that pushes under the thumb in the ozzle.These examples of afterwards using type (post applied) carton accessory are described in EP-A-1127798 (Rexam), have wherein proposed a kind of cam drive; And in WO 98/41452 (Tetra Laval), be described, wherein proposed a kind of ratchet device, and a kind of indicating device of arrogating to oneself out is provided.Can obtain multiple other the type of using accessory there from maker on the market afterwards, such as SIG Combibloc GmbH ﹠amp; Co KG (www.sigcombibloc.com) and Bericap GmbH ﹠amp; Co (www.bericap.com).

Technical matters

All these accessories all are stranded and are limited to these technical matterss: the dynamics that open package is required; The relative complexity, particularly those accessories that form by a plurality of detail assemblys making, install and use.In using the type accessory, alignment problem is a specific question afterwards.Because accessory must be glued on the container, so there is a kind of like this risk, promptly they will separate in transportation.External application can make that also these closure members are distorted easily.Use these closure members to tend to not produce intuitively additional problem such as consumer education.

Summary of the invention

Different with the settling mode that barrier layer is remained on the aforementioned existing accessory in the compound carton box, the present invention is by being arranged on barrier layer closure member self inside, having solved provides to have the continuous barrier layer problem of toppling over the ozzle closure member that can reseal, thereby makes described closure member to be inserted in the precutting hole as non-sterile carton.

But, in aseptic/ESL field, do not allow exposed aluminium lamination is exposed in most of aseptic packaging fluids, for example the peracidity material.This is because this material has a kind of like this tendency---experiencing six to nine months long storage life---can the described metal of oxidation.Therefore, must prevent that any exposed tinsel and the content of aseptic carton from coming in contact.Therefore,---process coats the paillon foil of handling---also is not enough even use a paillon foil on the base flange of carton accessory, because after for a long time, the cut edge of any exposure all is subjected to this oxidation easily.Be known that described contact takes place the seam of avoiding structurally, wherein said seam is that to utilize extrusion coating paper slab material to produce carton necessary.In general, in order to form this seam, need inboard ply of board is folded-out, and stacked with a skin, thus prevent that the edge of barrier layer paillon foil and content from coming in contact.Described seam is got up by super sonic or induction heat tight weld.Find to obtain acceptable result like this.

Removable peelable foil seal of applied on top across the accessory ozzle, avoided gratifyingly resealing effect and having a connector in that enclosing cover is inboard in order to obtain, and leave over next big relatively breach in gas barrier spare, this breach runs through base flange and the ozzle wall of described hole inner loop around described ozzle.

Therefore, preferably make barrier layer continuous in the base flange of accessory, and this is a kind of solution of describing in US 4948015 (Kawajiri).Wherein described accessory has a base flange that has groove, and the film with gas barrier spare performance is assemblied on the described groove securely.It proposes described film can have a kind of laminar structure, comprises polyethylene layer, aluminium lamination and polyethylene layer.The periphery of described barrier layer is covered up by described membraneous material.Recommend to utilize folder thing molding process described film to be connected to technology on the accessory as a kind of being used for.On principle, the suggestion of Kawajiri can solve aforementioned technical problem.But this design is owing to following reason is also impracticable:

At feasible, in enormous quantities, the low-cost manufacture method of the multilayer film of not knowing the aluminium foil layer (not having the aluminium matter edge that reveals) that comprises whole embeddings and get up in the art, and Kawajiri does not describe any method yet.

The folder thing molding process that is used for this lightweight disc of foil will be that a kind of needs place disk the slow process in the mould carefully.

For described disk is placed in the groove, basically can form the crack in inside grooves one around described disk inevitably, and will make like this because this crack, road can't be able to sufficiently sterilised before using, so this accessory is not suitable for aseptic use.Can't kill the germ that is hidden in the described crack is big problem, can cause any packing material of this problem that suffers to become no longer aseptic like this, cause material to have only several days " Keeping life ", and be not a lot of months the Keeping life under non-refrigerated condition of existing aseptic standard.

According to the present invention, the technical matters that is solved by Kawajiri is not solved by a kind of like this accessory is provided, this accessory comprises a base flange and a hollow ozzle, but the removing component within base portion that is positioned at ozzle, an enclosing cover of closing described ozzle with being used for resealable, and barrier foil that both sides are coated with plastic layer and extend across described base flange, it is characterized in that, described paillon foil had a cut edge that reveals before being assembled into this accessory, and this edge of described paillon foil is assembled on the described flange in such a way, prevents that promptly described edge from use coming in contact with the content of this accessory assembling container thereon.Described edge can seal in many ways, and is before being sealed on the described flange that it is folding downwards such as by it being embedded within the plastics in the described flange, perhaps it surrounded on the periphery of described flange.

Preferably, the edge of described paillon foil is embedded in the base flange.Be embedded in the described plastics by the edge with described paillon foil, it can't contaminated material.Because the barrier layer in the carton box is overlapping with the barrier foil that sticks on the described base flange, so described barrier layer can not interrupt.

This accessory can utilize a kind of mode manufacturing that comprises the steps to form: place one to take in pars intramuralis from what the base flange first surface projection of described accessory was come out a paillon foil that has plastic layer on each surface, wherein accessory has a hollow ozzle that extends out from the apparent surface; With described paillon foil is fixed on the described flange so that make the described edge that wall is sealed described disc of foil of taking in.

In the accessory that finishes of assembling can be before can inserts a precutting hole on the compound carton box base material from the inboard, and as with the same technology that described flange is welded on the cardboard in component part, the edge of the described paillon foil of embedding.

Alternatively, the invention provides a kind of accessory, this accessory comprises a base flange with first surface and one the hollow ozzle from coming out with the projection of first surface facing surfaces, but the removing component within base portion that is positioned at described ozzle, and enclosing cover of closing described ozzle with being used for resealable, it is characterized in that, the barrier foil that both sides are coated with plastic layer covers the first surface of described flange, so that make described annulus of foil extend on the described apparent surface around described ozzle.

In this alternative constructions,, come in contact so prevented the cut edge of described paillon foil and the content of container because described paillon foil is sealed on the cardboard wall in the process that accessory is ultrasonically bonded on the carton.This sealing have with carton box on the identical structure of other seam and the integraty of other position.Barrier layer in this structure is actually continuous, because between two paper tinsel layers, only have inboard polyethylene layer, and can be as the base flange that has intermediate gauge in the early stage modification.

Preferably, accessory required for protection is used in the carton box of any kind, but will be appreciated that, such accessory also can be applied on the bottle neck such as the so airtight bottle of isolation-type PET or multi-layer polyolefin bottle; Can also be applied on coated steel or aluminium can or the cover; On the individual layer or multilayer plastic container that perhaps also can be applied to make by thermoforming, casting or blowing mould shaping.

Description of drawings

In order to understand the present invention well, only some embodiment of the present invention is described with reference to schematic accompanying drawing below as example, wherein:

Fig. 1 shows a longitudinal profile that runs through according to the accessory of first embodiment of the invention, and this accessory is assembled into carton top;

Fig. 2 shows the details of edge before paillon foil is inserted of base flange shown in Fig. 1;

Fig. 3 A shows the details of alternate embodiment before paillon foil is inserted at base flange edge;

The edge that Fig. 3 B shows base flange shown in Fig. 3 A after paillon foil is inserted but carrying out the details of induction heat before sealing step;

Fig. 4 shows a section that runs through according to the accessory of another embodiment of the present invention; And

Fig. 5 shows a section that runs through according to the accessory of yet another embodiment of the invention.

The specific embodiment

Summary

Carton accessory 2 is made of a base flange 4 and the upright ozzle 6 of toppling over, and wherein topples over ozzle 6 and is closed by an enclosing cover 8.

Accessory 2 is plastics constituent elementss that two injection moldings form.

Ozzle 6 comprises the cylindrical ozzle of a hollow, has removable parts 10 at its base portion.These removable parts 10 are the plastic discs on the remainder that is connected base flange 4 by weakening part 12.In order to allow that but described removing component is removed, but on removing component 10, be connected with a draw ring 14.

So far, this accessory is substantially similar to the carton accessory that together uses with the standard carton box known in the art.Any design feature that adopts on this accessory all can be incorporated in the accessory among the present invention.

But the accessory among the present invention will together use with a kind of container of barrier layer that provides.As shown in fig. 1, this accessory is inserted in the precutting hole 20 on the compound carton box wall 22.Accessory 2 also can be assembled on the uncovered bottle neck of an isolation-type PET or polyolefin barrier layer bottle; On perhaps any other airtight container, such as tin-plate can box, its can by single or a plurality of comprise aluminium, steel or the like and be coated with the frosting layer the layer constitute; Perhaps be shaped on the plastic container that make, no matter utilize the extrusion blow forming technology or utilize injection stretch blowing mould forming technology by thermoforming, casting or blowing mould.

But disc of foil 30 by sealing-in on the downside of base flange 4 and removing component 10.

Replace solid disk, but removing component 10 can be configured to a kind of annulus framework that has center three summit formula star topologies usually.This framework will be connected on the base flange 4 by the reduction bridging part.So just alleviated the overall weight of accessory 2.

Disc of foil 30 cuts down from an aluminium matter paillon foil, is coated with a plastic layer in its both sides, and normally polyethylene, polypropylene or pet layer can make it be bonded on other plastics constituent elements like this.

Base flange 4 is welded on the carton wall 22 in circle ring area A by means of induction heat sealing or ultrasonic welding process.A periphery of taking in wall 32 around base flange 4.In Fig. 1, the shown wall 32 of taking in inwardly is deformed on the periphery of disc of foil 30, is exposed to the aluminium lamination edge within the disc of foil 30 that coating is handled through bilateral so that prevent the content of container.

Carton structure

Compound carton box 22 is made by several material layers, comprising a gas-barrier layer 40.This barrier layer can be aluminium foil or EVOH or any other suitable material.This barrier layer is bonded on the ply of board by means of an adhesive layer, and this ply of board all is coated with a polyethylene coating on each side.Also can adopt the concrete structure of other combination board.

The closure member structure

Described a kind of enclosing cover and topple over may constructing of ozzle of being used in WO99/61337 (Spreckelsen McGeough), it also shows and how a paillon foil can be fitted in the base flange.But in this file, the free metal edge of paillon foil will reveal.Spreckelsen McGeough also shows a kind of snap-on enclosing cover (a snap onovercap).It will be understood that as shown in the figure spiral enclosing cover 8 is equally applicable to close topples over ozzle 6.Shown enclosing cover 8 has connector 42, and it is incorporated within the uncovered mouth of ozzle 6, reseals effectively so that

guarantee.Screw thread

44,46 is formed on the ozzle outer wall of toppling over ozzle 6 and on the opposed inwall of enclosing cover 8, so that make described enclosing cover can be screwed onto on the described ozzle.

Edge to paillon foil seals

An essential feature of the accessory among the present invention is, the metal edge that prevents described paillon foil when this accessory is assembled in use comes in contact with the content of container.Quilt sealing-in in advance was on paillon foil 30 before accessory 2 was preferably in and is installed on the container.In the embodiment shown in Fig. 1 and 2, disc of foil 30 is placed in one and takes within the wall 32, before being assembled into described paillon foil on the ozzle 6, taking in wall 32 and vertically is folded down on base flange 4 like that as shown in Figure 2.In assembling process, in the induction heat seal process, use an instrument to take in wall 32 pressure holdings on the edge of described disc of foil.Taking in wall 32 therefore becomes a sacrifice mems in the ozzle structure, and the plastics of forming this material will be melted on the edge of described paillon foil effectively, so that enclose the described metal edge that reveals.

A kind of alternative constructions of taking in wall 32 has been shown in Fig. 3 A and 3B.In this scheme, wall 32 has a weakening part 50 in a middle part circle ring area.In case being inserted into, disc of foil 30 takes within the wall 32, weakening part 50 will allow that the end 52 of taking in wall 32 inwardly is deformed on the edge of described paillon foil so, so that the edge of described paillon foil is remained on correct position, guarantee sacrifice property take in the wall 52 plastic flow to and cover any metal edge that reveals.

Figure 4 illustrates a kind of metal edge and carry out the leak free alternative paillon foil 30.In this embodiment, paillon foil 30 covers the whole downside first surface 54 of base flange 4 greater than the diameter of base flange around a free edge, and holds the second surface 56 to described base flange.Folded edge ends at the inboard of circle ring area A, and here base flange 4 is welded on the container 22.

In the embodiment shown in fig. 5, the edge of disc of foil 30 upwards and was inwardly folded before being soldered on the base flange 4.This folding step can place described paillon foil the process on the base flange 4 to realize by means of a suitable forming tool.The periphery of base flange 4 has a maintenance wall 34, in order to before sealing the disc of foil of folding up is remained on correct position.

Manufacture method

Before being assembled into carton accessory 2 on the carton box, accessory 2 is assembled on the disc of foil 30 in advance, and utilizes the induction heat sealing technology that described paillon foil is welded on correct position.The process that is assembled on the carton box is identical with the non-sterile technology of the package of standard, and here will not describe in detail.As a kind of described paillon foil induction heat is sealed in replacement scheme on the base flange 4, can adopts ultrasonic welding.Described paillon foil can also utilize bonding mode to be fixed on the described flange.In the embodiment shown in fig. 4, can rely on the neighboring that covers described paillon foil around base flange 4, described paillon foil is fixed on the ozzle 6.Although can adopt other adhesion step before being installed on the carton, it is essential that these are not present embodiment institute.If accessory 3 sensed heat seals are on carton, paillon foil 30 will be welded on the described base flange simultaneously so.

In the embodiment shown in fig. 4, other seam of other position has identical structure on sealing that forms between the edge of paillon foil 30 and the wall 22 and this carton box.

The continuity of barrier layer

In case accessory 2 is welded in the hole 20 on the carton box wall 22, so the barrier layer that constitutes by paillon foil 30 will carton box inner form one with layers 40 continuous barrier layers.Therefore, make the carton accessory that together uses with non-sterile technology of the package be convenient to assemble advantage and combine with the existing barrier layer integraty of using the type accessory and providing that together uses with aseptic packaging technology traditionally afterwards.

The customer uses

In use, the customer can remove the thing of unpacking with this enclosing cover by the enclosing cover 8 of outwarding winding, so that obtain to touch the inlet of draw ring 14.But removing component 10 can utilize draw ring 14 to remove subsequently.Owing to but paillon foil 30 is welded on the whole base flange 4 that comprises removing component 10, thus described draw ring is pulled out and will be made described foils breaks, and allow the content that obtains container.As required, some teeth that can be shaped on the lower surface 54 of base flange 4 are so that as helping removing described paillon foil described in the patent of fwd Spreckelsen McGeough., for this foil layer, be easy to relatively manually be penetrated if but described paillon foil does not disconnect as yet by removing removing component 10.

Although shown a draw ring, in described ozzle, can use any other existing mechanism, but, allow and obtain content so that remove described removing component and make described foils breaks.

(according to the modification of the 19th of treaty)

1, a kind of accessory, comprise a base flange (4) and a hollow ozzle (6), one be positioned at ozzle (6) but base portion within removing component (10), an enclosing cover (8) of closing ozzle (6) with being used for resealable, and barrier foil (30) that both sides are coated with plastic layer and extend across base flange (4), it is characterized in that, paillon foil (30) is a coated aluminium foil, it has an aluminium cut edge that reveals before in being assembled in this accessory, and the edge of paillon foil (30) is assembled on the flange (4) in such a way, prevent that promptly described aluminium cut edge from use coming in contact with the content of this accessory assembling container thereon, wherein base flange is positioned at this container.

2, accessory as claimed in claim 1 is characterized in that, the aluminium cut edge of described paillon foil (30) is embedded in the base flange (4).

3, accessory as claimed in claim 1 or 2 is characterized in that, described paillon foil (30) by sealing-in on base flange (4).

4, a kind of accessory, comprise a base flange (4) with first surface (54) and one hollow ozzle (6) from coming out with first surface (54) facing surfaces (56) projection, one be positioned at ozzle (6) but base portion within removing component (10), and enclosing cover (8) of closing described ozzle with being used for resealable, it is characterized in that, the barrier foil (30) that both sides are coated with plastic layer covers the first surface of flange (4), so that make described annulus of foil extend on the apparent surface (56) around described ozzle.

5, arbitrary described accessory in the claim as described above is characterized in that, also comprises and arrogates to oneself out indicating device.

6, a kind of carton box, have an arbitrary described accessory (2) in the claim as described above, this accessory (2) is inserted in the precutting hole (20) on the extrusion coating paper wooden partition (22), it is characterized in that the edge of paillon foil (30) and sealed portion between the wall (22) have the identical integraty of other seam with carton remainder place.

7, a kind of can that is coated with plastic layer or is coated with barrier layer, have an arbitrary described accessory (2) in the claim as described above, this accessory (2) is inserted in the precutting hole (20) on the wall of container, it is characterized in that the edge of paillon foil (30) and the sealed portion between the wall have the identical integraty of other seam with container remainder place.

8, a kind of individual layer or multilayer plastic container that is shaped and makes by thermoforming, casting or blowing mould, have an arbitrary described accessory (2) in the claim as described above, this accessory (2) is inserted in the precutting hole (20) on the wall of container, it is characterized in that the edge of paillon foil (30) and the sealed portion between the wall have the identical integraty of other seam with container remainder place.

9, a kind of method of making accessory, comprise the steps: an aluminium foil that has plastic layer on each surface is placed one from taking within the wall that the first surface projection of the base flange of described accessory is come out, wherein said accessory has a hollow ozzle that extends out from the apparent surface; With described paillon foil is welded on the described flange so that make described wall seal up the aluminium cut edge of described paillon foil.

10, method as claimed in claim 9 is characterized in that, also is included in before the described fixing step, with described step of taking on the edge that wall folds into described paillon foil.

As claim 9 or 10 described methods, it is characterized in that 11, described fixing step utilizes the induction heat sealing technology to realize.

12, a kind of method of making accessory, comprise the steps: to utilize a paillon foil that on each surface, has a plastic layer to cover the first surface of the base flange of described accessory, wherein said accessory has a hollow ozzle that extends out from the apparent surface, so that make described annulus of foil extend on the described apparent surface around described ozzle; With described paillon foil is welded on the described flange.

Claims

1, a kind of accessory, comprise a base flange (4) and a hollow ozzle (6), one be positioned at ozzle (6) but base portion within removing component (10), an enclosing cover (8) of closing ozzle (6) with being used for resealable, and barrier foil (30) that both sides are coated with plastic layer and extend across base flange (4), it is characterized in that, paillon foil (30) has a cut edge that reveals before in being assembled in this accessory, and the edge of paillon foil (30) is assembled on the flange (4) in such a way, prevents that promptly described edge from use coming in contact with the content of this accessory assembling container thereon.

2, accessory as claimed in claim 1 is characterized in that, the edge of described paillon foil (30) is embedded in the base flange (4).

9, a kind of method of making accessory, comprise the steps: a paillon foil that has plastic layer on each surface is placed one from taking within the wall that the base flange first surface projection of described accessory is come out, wherein said accessory has a hollow ozzle that extends out from the apparent surface; With described paillon foil is welded on the described flange so that make described wall seal up the edge of described paillon foil.