CN103201179B

CN103201179B - Blow-molded container

Info

Publication number: CN103201179B
Application number: CN201280003610.6A
Authority: CN
Inventors: W·L·德索托-伯特; T·M·戴; R·E·纽法斯; R·D·塞特费尔德; C-C·黄; M·A·赫瑞拉; S-Y·麦康维尔; A·帕甘; B·D·安德烈斯; C·A·沃拉-普瑞利
Original assignee: Procter and Gamble Ltd
Current assignee: Procter and Gamble Ltd
Priority date: 2011-01-14
Filing date: 2012-01-13
Publication date: 2016-08-24
Anticipated expiration: 2032-01-13
Also published as: WO2012097248A1; JP5681295B2; EP2663499A1; CN103201179A; MX2013005285A; JP2013545682A; US20120181292A1

Abstract

The present invention relates to a kind of container (101), it includes maintaining body (103), described maintaining body for being attached to opening or the cervical region (102) of this container by closure member (106), and a part for container body includes the physical geometry producing more than one undercutting.

Description

Blow-molded container

Technical field

The present invention relates to a kind of blow-molded container with maintaining body, described maintaining body for being attached to institute by closure member State opening or the cervical region of container, and a part for described container includes the physical geometry that produces more than one undercutting.

Background technology

Have developed the multiple package for household products, personal care product and other products, including distribution bag Piece installing or container.The container with the aesthetic appearance pleasing people for consumers has fully integrated the closing of design with container Component designs.This has expressed following message: the integration of the two assembly is exquisite composition.This can for producing consumer It is critically important from the point of view of the closure member used intuitively.One example of the container/closure system of high degree of integration is following appearance Device/closure system: wherein the geometry of container is wrapped in around closure member to produce shoulder.This geometry is also referred to as There is the container of recessed cervical region.This groove geometry is for different purposes: give outside container and closure member total integrated See, give the container stability of inverted orientation and make the effect the most more intuitive of closure member.

It is impossible for blowing this container geometry with tradition blow molding technology of today, because this container is at shoulder Concave part will have undercutting.This is owing to when die cavity instrument is to be opened, the steel producing concave part is trapped.If Use and blow head instrument and carry out contoured top parts, then will run into the undercutting below the snap-fastener beading structure of neighbouring container shoulder. This is owing to can not blow bar mould by tractive, described in blow bar mould from shape beading structure below generation snap-fastener beading.

When observing the container employing groove geometry design on market, find that they are generally of straight shoulder Rather than concave design.The formation of this groove need not any inventive step, because there is at least one direction following, its middle mold Tool can be opened with vertical pulling motion and be superior to any moulding material, and described moulding material will be trapped within the geometric form of container In shape.But, can will be very limited in design with the groove geometry of the vertical pulling mode demoulding in blowing mould, thus limit Make the integration of closure member and blow-molded container and therefore limited above-mentioned all beneficial effects.

Current other containers with different shoulder geometry that commercially there is also, but these containers employ and this The cervical region that the cervical region that found is different.These containers employ closure member attachment means, and wherein closure member is from dispensing aperture Inner side snap-fastener to the container.One non-limitative example of the container manufactured by method of the present invention can referred to as be had Having fastening close mechanism, it is snapped onto on the outside of container neck.By the discovery of the present invention, the design provides bigger preventing Seepage reliability, because the Outboard Sections of cervical region is calibration, thus the more close tolerance limit in inboard portion providing container. The inner side of container is not altitude calibration, thus adds the probability of poor joint between container and closure member, and therefore Cause possible seepage.This be the parts owing to being blow molded via extrusion blow molded method generally on the outside of parts than on inner side There is the geometry better controled over, because the wall thickness of material can produce change, described aspect ratio because of the aspect ratio of parts The different parison draw ratio being converted on radial and axial.(their closure member is attached from the inner side of cervical region additionally, container Typically require to the container) and cervical region is pruned and reaming is as auxiliary operation.The operation of excision excess stock is the most not It is high cost benefit, thus should avoid.Additionally, any cutting operation also needs to directly touch the portion by cut Point, thus limit available groove geometry and limit the integration of closure member and blow-molded container and therefore limit State all beneficial effects.(wherein the closure member inner seal from cervical region the outside from cervical region are pressed to utilize closure member attachment means Button is to the container) traditional striker plate can be used and blow bar tool design, wherein blow bar cutting parison (when it contacts with striker plate Time), thus produce the cervical region of calibration and it is thus eliminated that the necessity with reaming is such as pruned in auxiliary operation.

Currently, most of closure members make the geometry of container completely change, thus it requires the size of closure member and container Geometry is proportional.In the present invention, the size of closure member is minimized, thus provides multiple beneficial effect.Useful One of effect is that the weight of closure member is decreased to be obtained in that the minimum of the resin needed for required closure member function.This For from the point of view of environment being a kind of beneficial effect, because industry does not currently have perfect polypropylene and recycles stream.By having Including the closure member from overall wrapper reduction weight, this allows container to have the recoverable of improvement.This has also reduced The overall cost of closure member, including the one-tenth being associated with resin, processing, mould, the selection of injection molding (IM) press and other aspects This.Another minimizing closure member size provides the benefit that, closure member becomes the significantly less critical part of this design, thus Induction people use identical closure member to the different Vessel Design in a brand to a greater extent, even more so that can be right All different brands/molding series all uses identical closure member.This facilitate optimization and efficiency, reduce the most further Cost.This also make this shape profile can bi-directional scaling, and do not use supplementary features such as step, bigger radius Or the change of other geometric forms and angle are to be adapted to closure member.

Another minimizing closure member size provides the benefit that, it can be incorporated in container shapes.When container is in During its inverted orientation, the design of integration allows to use container top surface to increase stability without bigger closure member. This also contributes to produce differentiation between these forms (such as shampoo and conditioner), thus helps consumer to identify their institute The product found.This facilitate the scale of Vessel Design and exploitation, therefore become a kind of advantage.Another advantage is, has Recessed closure member provides higher levels of injury protection, because recessed closure member is protected by groove geometry.Have Another of recessed cervical region (wherein container pack is around closure member) provides the benefit that, it makes it possible to all different chis The closure member that very little use is identical, still has the outward appearance of integration between container and closure member simultaneously.Another of the present invention has Benefit effect it is possible to all containers made with different molding technologies are used identical closure member.Molding technology unrestricted Property example includes extrusion blow molded (EBM), injection blow molding (IBM) and injection drawing blow (ISBM).The scale of this facilitating goes forward side by side one Step reduces cost.

It is an object of the invention to describe a kind of blow-molded container, wherein said container wraps in the geometry of this container Containing groove.This groove allows closure member to integrate with container so that when closure member couples with blow-molded container, it is substantially flush Summit in the outmost surface of this blow-molded container.

Summary of the invention

The present invention relates to a kind of blow-molded container including physical geometry and closure member maintaining body, described physical geometry Shape produces more than one undercutting, preferably groove, and described closure member maintaining body is described for being attached to by closure member The opening of container or cervical region.

Accompanying drawing explanation

Figure 1A is the isometric views of the final container shape with recessed cervical region and snap-fastener beading closure member attachment means；

Figure 1B is the isometric views of a non-limitative example of small closed part；

Fig. 1 C is the container of the small closed part having recessed cervical region with assembling, and described container is with upright orientation With inverted orientation placement；

Fig. 1 D is the top view of container, it is shown that molding die parting line and mold actions direction.

Fig. 1 E is the top view of the container of the small closed part having recessed cervical region with assembling.

Detailed description of the invention

From the point of view of the present invention, suitable groove be following those, when described closure member couples with described goods, described Groove allows a part for goods to be wrapped at least some of surrounding of closure member.This type of groove can allow closure member being connected to The summit being substantially flush the outmost surface in described goods is kept during described goods.So-called " closure member at least some of " exists Herein referring to when described closure member is connected to described goods, described part extends to be formed at least around the periphery of closure member 45 °, preferably at least 60 °, being more preferably between the angle between 60 ° and 360 °, described angle is the center from closure member and at x-y Plane obtains.

As used herein, term " integration " refers to: (i) described closure member at least some of keep being substantially flush in At least one surface of goods, the outer surface of the most described shoulder；And (ii) at least one shoulder parcel of described goods Described closure member at least some of around, preferably form at least one concave surface.The advantage of this type of configuration is consumption The desired profile of person.

As used herein, term " undercuts " and refers to following physical geometry, when described mould is beaten on linear direction When opening, goods are removed from the molds by its obstruction, and described linear direction intersects at least some of of described geometry.

As used herein, term " not damaged " refer to goods be maintained at molding methods at the end of produced final physical several What shape.

As used herein, term " scale " refers to that the economy obtained by reducing design and development time and resource is useful Effect and Consumer acceptance, the feature etc. that is designed beautifully are not had a negative impact and obtained by direct repeated application Capital investment.

Blowing be a kind of known to the manufacture method for manufacturing plastic such as container, fuel tank, shank etc..Blowing Plastics melt and are configured to when method starts parison or preformed member.Then parison is clamped in mould, and by supercharging Medium (usually air) blow or be pumped into wherein.Air pressure forces plastics to be matched with the peripheric geometric shapes of mould. After the cooling of these plastics and hardening, mould turns on and these parts are ejected.

There are three kinds of major type of blowing platforms: extrusion blow molded (EBM), injection blow molding (IBM) and stretch-blow (SBM).In some applications, depending on performance and the complexity wanting shaped article, the combination of above-mentioned blowing platform may be more For suitably, such as injection drawing blow (ISBM).

Plastic resin material for the present invention can be polyolefin such as polyethylene (PE) and polypropylene (PP), polystyrene (PS), polrvinyl chloride (PVC), polylactic acid (PLA) or polyethylene terephthalate (PET).

As used herein and except as otherwise noted, " polyethylene " includes high density polyethylene (HDPE) (HDPE), Low Density Polyethylene (LDPE), linear low density polyethylene (LLDPE) and ultra-low density polyethylene (ULDPE).As used herein and unless additionally refer to Bright, " polypropylene " includes homopolymer polypropylene, random copolymer polypropylene and block copolymer polypropylene.

Accordingly, it would be desirable to a kind of novel container design, it has recessed cervical region 102 and closure member maintaining body 103.Container 101 can manufacture via any aforementioned different blow moiding method.

In one embodiment of the invention, container 101 includes closure member maintaining body 103, and described mechanism will be for closing Component 106 is attached to opening or the cervical region 102 of container 101, its can be selected from without limitation snap-fastener beading, screw thread, bayonet socket and Their mixture.

In one embodiment of the invention, container 101 also includes following geometry, and described geometry is traditionally It is considered to produce more than one undercutting 107, and therefore after having molded container, container is removed from the molds and the most temporary transient Ground or for good and all change the shape of container or make the shape distortion of container just will become highly difficult.This is due to for producing container The material of the mould of shape is by the geometry being trapped within container, thus does not allows to carry out the straight of mould as shown in figure ip Draw opening action.

In one embodiment of the invention, container 101 includes geometry, wherein around container neck between Guan Bi Interface 105 between part 106 and the geometry of container can without limitation selected from recessed, convex, linear, nonlinear, Or their mixing.The concrete shape that can limit interface geometry 105 is matched with the shape of closure member 106, therefore allows The outward appearance of integration is produced between closure member 106 and container 101.

In another embodiment of the present invention, container 101 includes non-around the cervical region of container and the Guan Bi interface of container Linear geometry.The curvature at interface 105 allows container pack to enable to have fully integrated around closure member 106 The desired feature that is designed beautifully.The part of the container 101 being wrapped in around closure member 106 can be referred to as the shoulder 104 of container.

In one embodiment of the invention, container 101 includes shoulder 104 geometry, wherein has and includes closure member The sidepiece of the shoulder wall at the interface 105 of 106 has a positive drafting angle less than 10 degree, and in another embodiment, withdrawing pattern Angle can be further reduced to less than 8 degree, and preferably drafting angle is even further reduced to 5 degree or less.Once close Component 106 is assembled, and this shoulder surface just produces interface 105 between container 101 and closure member 106.Have less than 10 degree Positive drafting angle is critically important, and this is for two main causes:

1) Consumer acceptance-drafting angle is the least, then after closure member 106 is assembled, at closure member 106 and container By the least to space or the gap 108 of existence between 101.Big gap generally by consumers' perceptions for be wherein can water accumulation and The region of product, so that overall molectron is perceived as dirty and messy.Additionally, big gap also can make consumers' perceptions to closing Component and container are not fully integrated, so that overall wrapper is revealed as poor design.When this gap 108 exceedes When the distance of the 7.4mm of shoulder surface 104 to closure member 106, consumer also perceives the inner barrier to product flowing.

2) to all multiple container dimensionals repeated application closure member 106-potentially at perpendicular shoulder interface 105 wall of container On there is low drafting angle make it possible for having the closure member 106 of straight or low vertical drafting angle.If closure member 106 There is low vertical drafting angle, then its container that cannot be only used for having the shoulder 104 of this side covering closure member, Er Qieke For having the container of different shoulder design or the most not having the container of shoulder, wherein the periphery of closure member is partly Or be completely exposed.Having and use the motility of identical closure member to create scale all different Vessel Design, this is usual Reduce cost and logistic complexity.

In one embodiment of the invention, container 101 includes shoulder 104 geometry, and wherein the shape of shoulder can quilt Revise to be adapted to the mould container of different volumes size, remain able to couple them with identical closure member 106 simultaneously.Repair The shape changing shoulder 104 produces scale to be matched with identical closure member 106, and this generally reduces cost, allows overall group simultaneously Component keeps the aesthetic appearance that it is fully integrated.

In another embodiment of the present invention, a part for container body can have following physical geometry, described thing Reason geometry produces at least one non-linear or more than one linear undercutting.In one embodiment, linear undercutting can have A part for this morphology makes this surface be in identical plane.In one embodiment of the invention, non-thread Property undercutting can by this morphology a part limit so that this surface is present in multiple plane.

In one embodiment of the invention, container 101 manufactures by the following method, and described method is selected without limitation From extrusion blow molded (EBM), injection blow molding (IBM), injection drawing blow (ISBM) or their mixing.

In one embodiment of the invention, container 101 includes shoulder 104 geometry integrated with closure member 106, and And preferably this shoulder 104 geometry makes container profile completely change with the integration of this closure member 106.

In one embodiment of the invention, a kind of container 100, wherein the cervical region of container can be at least in part by container body A part encirclement.

In one embodiment of the invention, container 101 includes that closure member keeps structure 103, wherein the holding knot of container Structure 103 can be referred to as " public assembly ", because it is from the external collar facing projection of container；And closure member 106 includes " female component ", because It has recessed region, and container 101 is just fitted in described recessed region once be assembled.In one embodiment of the present of invention In, container 101

In one embodiment of the invention, container 101 includes that closure member keeps structure 103, wherein the holding knot of container Structure 103 has the degree of depth of the less than about 1.5mm of the pedestal from beading end to cervical region or external diameter.It is critically important for having this degree of depth , as it ensure that enough joints will be there is to prevent closure member to be not intended to container between closure member 106 and container 101 Ground separates.In a different embodiment of the present invention, container includes that closure member keeps structure, wherein the holding structure of container Can be referred to as " female component ", because it has from the recessed recess of the external collar facing of container.The holding structure of closure member can be referred to as " public assembly ", because it from the facing projection of closure member and is just fitted to container once be assembled.In the present invention one In embodiment, container includes that closure member keeps structure, and wherein the holding structure of container has from the holding of the external diameter of cervical region to this mother The degree of depth of the less than about 1.5mm of the pedestal of structure.To have this degree of depth be critically important, as it ensure that at closure member and container Between will there is enough joints to prevent closure member from by mistake separating with container.

In a different embodiment of the present invention, container 101 comprises without limitation selected from following material: polyene Hydrocarbon such as polyethylene (PE) and polypropylene (PP), polystyrene (PS), polrvinyl chloride (PVC), polylactic acid (PLA), poly-to benzene two Formic acid second diester (PET) or their mixture.These are the typical resins for manufacturing blow-molded container.An embodiment In, plastic resin material is polyolefin high density polyethylene (HDPE) (HDPE).These plastic materials can be by petrochemistry source monomer or life Thing source monomer is made.

In another embodiment of the present invention, container 101 includes two upright surfaces 109 in container geometry. Utilizing this geometry, this moulding article can be placed with multiple orientation, the most upright orientation or inverted orientation.This geometry The closure member 106 of non-protruding is also provided for moulding article.

In one embodiment of the invention, container 101 is taken out from molding cavity and the most permanently or temporarily make Mold container malformation.This is critically important, because any kind of deformation (permanent or temporary transient) all may result in this The impact of the integrity of structure.

In one embodiment of the invention, comprise can biodegradable polymer or can biodegradation for container 101 The mixture of polymer.

In another embodiment of the present invention, container 101 comprise without limitation selected from following can biodegradation Polymeric material: polylactic acid (PLA), polyglycolic acid (PGA), poly-succinic acid fourth diester (PBS), fat based on p-phthalic acid Race-aromatic copolyesters, there is the aromatic copolyesters of high terephthaldehyde's acid content, polyhydroxy-alkanoates (PHA), thermoplastic starch (TPS), cellulose or their mixture.

Dimension disclosed herein and value are not intended to be understood to be limited strictly to described exact value.On the contrary, unless separately Indicating outward, each such dimension is intended to indicate that described value and around the functionally equivalent scope of this value.Such as, disclosed Dimension " 40mm " is intended to indicate that " about 40mm ".

The relevant portion of the document used quoted in detailed Description Of The Invention is incorporated by reference herein；Quoting all of any document May not be interpreted as it as the accreditation of the prior art of the present invention.When term in this document any implication or definition with In the document that way of reference is incorporated to when any implication of same term or definition conflict, by give that term in the literature Implication or definition are as the criterion.

Although illustrate and describing the present invention by specific embodiments, but those skilled in the art are shown And be clear to, can make without departing from the spirit and scope of the present invention many other change and modification.Therefore, All these changes that following claims is intended in the scope of the invention and modification.

Claims

1. a container, including:

A) maintaining body, described maintaining body for being attached to opening or the cervical region of container by closure member；

B) part for container body, a part for described container body includes shoulder and produces the physical geometry shape of more than one undercutting Shape, wherein, when mould is opened on linear direction, described undercutting hinders and is taken out from described mould by goods, described line Property direction intersects at least some of of described physical geometry.

Container the most according to claim 1, a part for wherein said container includes the cervical region around container and described appearance The geometry of the described container at the Guan Bi interface of device, described geometry is selected from recessed, convex, linear, nonlinear, line Property and nonlinear mixing or their mixing.

Container the most according to claim 2, a part for wherein said container includes the cervical region around described container and institute State the nonlinear geometry shape at the Guan Bi interface of container.

Container the most according to claim 1, wherein said container includes geometry, wherein has the boundary including closure member The vertical side of the described shoulder in face has the positive drafting angle less than 10 degree.

Container the most according to claim 1, the cervical region of wherein said container is at least in part by the part bag of container body Enclose.

Container the most according to claim 1, wherein said shoulder geometry can be modified and mold with to all not The container of same volume size uses identical closure member.

Container the most according to claim 1, wherein said container is by making selected from following method: crowded base blows Mould, injection blow molding, injection drawing blow and their mixing.

Container the most according to claim 1, wherein said shoulder geometry is integrated with closure member.

Container the most according to claim 1, wherein said maintaining body is public group in the interface of closure member or attachment Part.

Container the most according to claim 9, wherein said maintaining body have the pedestal from the end of beading to cervical region or The degree of depth less than 1.5mm of external diameter.

11. containers according to claim 1, wherein said maintaining body is female group in the interface of closure member or attachment Part.

12. containers according to claim 11, wherein said maintaining body has from the external diameter of described cervical region to described mother The degree of depth less than 1.5mm of the pedestal of assembly.

13. containers according to claim 1, wherein said container is constituted by selected from following material: polyolefin, polyphenyl second Alkene, polrvinyl chloride, polylactic acid, polyethylene terephthalate or their mixture.

14. containers according to claim 13, wherein polyolefin is polyethylene or polypropylene.

15. containers according to claim 1, wherein said container includes two upright surfaces in container geometry.

16. containers according to claim 1, wherein during taking out from molding cavity, the structure of described container is the most temporary Time ground or for good and all deform.