WO2017112977A2 - Système de conditionnement comprenant un contenant en plastique pour un produit de remplissage et procédé de fabrication correspondant - Google Patents

Système de conditionnement comprenant un contenant en plastique pour un produit de remplissage et procédé de fabrication correspondant Download PDF

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Publication number
WO2017112977A2
WO2017112977A2 PCT/BE2016/000055 BE2016000055W WO2017112977A2 WO 2017112977 A2 WO2017112977 A2 WO 2017112977A2 BE 2016000055 W BE2016000055 W BE 2016000055W WO 2017112977 A2 WO2017112977 A2 WO 2017112977A2
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WO
WIPO (PCT)
Prior art keywords
container
pressurised
container system
pressurised container
pet
Prior art date
Application number
PCT/BE2016/000055
Other languages
English (en)
Other versions
WO2017112977A9 (fr
WO2017112977A3 (fr
Inventor
Dirk De Cuyper
William Dierickx
Tom Anthierens
Original Assignee
Tradidec Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tradidec Nv filed Critical Tradidec Nv
Publication of WO2017112977A2 publication Critical patent/WO2017112977A2/fr
Publication of WO2017112977A9 publication Critical patent/WO2017112977A9/fr
Publication of WO2017112977A3 publication Critical patent/WO2017112977A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body

Definitions

  • Packaging system with plastic container for filling product
  • the present invention relates to a container of plastic material which is intended to receive a filling product, such as fluids, in particular under pressure, namely liquids or gases or also semi-liquid products, in particular viscous products such as pastes, creams, gels, also powders, bulk product etc.
  • a filling product such as fluids, in particular under pressure, namely liquids or gases or also semi-liquid products, in particular viscous products such as pastes, creams, gels, also powders, bulk product etc.
  • a quite efficient pressurised container packaging system functions as a plastic pressurised packaging using compressed air, instead of the classic metal pressurised packaging using propellant gas,
  • Such a packaging thus consists of two containers, an inner container with high-pressure compressed air, and an outer container with low- pressure compressed air.
  • the outer container fully surrounds the inner container, and these are separated from each other by a pressure regulator which converts the high pressure into a constant low pressure.
  • the low-pressure part contains the product with a piston below it. n both the i er and the outer container, the ase is cut of and a se arate base part is fitted.
  • This base part contains a centre! opening closed by rubber plug. After filling, t e high-pressure rn air is Introduced into the inmr container via this plug. W n tie product of the pressurised container packaging s stem is used, the piston moves up under the influence of the low- res ure air aoo * in so doing, expels the product from the outer container.
  • the same pressurised container packaging system is provided but without the closed low-pressure part. Hem, the high-pressure compressed air is introduced directly below the piston via the same opening in the same separate base past
  • the object of the present invention is to remedy this disadvantage by proposing a simplified pressurised packaging system.
  • This m consist of a system comprising a similar outer container provided with a separate base part, bu win the exclusion of the pressure control system ,
  • the omission of said pressure regulator has the result that both the illi g product contained in the pressurised packaging system, end the outer container, are directly subjected to tie high pressure which thus st remains applicable .
  • a pressurised eo talf system for packaging a continuous filling product under pressure, wherein this com ises a container which Is pr vided with a neck part wfth a ur ng ening o its to side, adjoini g this a sheathing part,
  • a container which Is pr vided with a neck part wfth a ur ng ening o its to side, adjoini g this a sheathing part,
  • a cylindrical shape which forms h foody of the container, and a ba e part which in parts uiar consists of a plastic other
  • the container can fee closed on said top side via a cteswe.
  • the container is submitted to m internal pressure which is higher than atmospheric pressure,
  • the pressurised container s slem is remarkable
  • said s at i g par s out a a on its opposite ase side, wherein the base side opposite said top skJe is closed fey a separatel added base part also m d of plastic olymer, which is attached to the sheathing by m ans of a connexion, and in that this is provided with a movable piston which is axlaily dlspia eablo along the main axis of the pressurised container between a bottom and a top position, in particular, the container is made of a plastic material which is biaxiaH sireichafele.
  • the piston may be mounted at the top of the container instead of at the bottom, wherein the pisto daring iiling is systematically pressed down, so that fewer air inclusions occur. This offers the advantage that even highly viscous products can foe filled with a high speed.
  • the piston Is a bidirectional piston.
  • the piston is displ&ceabie in a reciproeatir ⁇ fashion along the main a s be wee said bottom and top positions.
  • the piston has an arched form which protrudes towards the top of # container, which Is such thai in this way almost all th filflno; prodwc can fee expelled from the pressurised container system during operation.
  • the piston has a shape mafch3 ⁇ 43 ⁇ 4g that of the upper bottle In which this fits precisely in Its top position, wherein almost no residual space is left in-beh ⁇ een.
  • the piston Is designed to have a form which oorreep nd well to the shoulder of the top of the container, ao that this moves all the product from the container, instead of a flat disc.
  • a closable valve is provided in said separately added base part for pressurisation thereof, in particular a self- closable element, particularly a high-pressure valve of the so-called "umbrella plug” type, or via a two-stage element, particularly a so- cafied two-stage "Nicholson plug".
  • the materials used in the container comprise a biaxially stretchable plastic material with high intrinsic viscosity.
  • the container is made from polyesters, namely PET (polyethylene terephthalate), or PET co polyesters with high pressure resistance.
  • PET polyethylene terephthalate
  • PET co polyesters with high pressure resistance Preferred embodiments of these co polyesters are naphthalate, isosorbide or copolyesters containing spiroglycol. These copolyesters typically have a higher pressure resistance, a higher temperature resistance or a combination of both, than PET.
  • the container may where applicable also be made of a po!yamide, polystyrene and COC.
  • a biaxially stretchable material which has a high intrinsic viscosity of an order of magnitude of 0,7 to 1 ,2 g/dl, in particular 0,8 to 1 g/dl.
  • a homopolymer-type PET material is chosen which is characterised by a behaviour with fast crystallisation. This also produces a stronger container with better resistance to both temperature and pressure.
  • a hot-fiil PET material is selected, since this type of material was also specially developed to crystallise more quickly, which promotes temperature stability compared with standard PET.
  • a particular blow-moulding step is applied consisting of a so-called heat set blow-moulding process, whereby said accelerated crystallisation effect of the latter material, hot-fill PET, is further amplified.
  • preforms are blow-moulded in preheated moulds instead of in cooled moulds. This also leads to higher crystallisation, whereby again both temperature- and pressure- stability are further increased.
  • the blow moulds are heated to temperatures of at least 120°C, up to 220°C, whereby the crystallisation acceleration of hot-fill PET is brought to unprecedented levels.
  • the basic plastic material PET is at least partially replaced by PEN, with a PEN proportion of approximately 5 w.% and 95% PET, or 95 w.% EN and 5% PET.
  • PEN has the property that firstly this material is stronger than PET, and secondly it has a higher vitrification temperature T g .
  • the PEN material proposed here consequently perfectly suits the proposed application of a simplified pressurised packaging system which must resist higher pressure conditions. The assembly is made more stable for high pressure and temperature combinations.
  • additives are added to the base material, namely standard PET, consisting of so-called crystal!isers.
  • crystal!isers are formed by seeds or constituents which significantly increase the crystallisation degree of a material in which they are contained. Thanks to the addition of such crystal I isers, it is even possible to use normal, standard PET as the basic plastic material, instead of the abovementioned materials. In this case, it is the crystallisers which ensure a higher crystallisation level, increasing the temperature- and pressure- stability. In some cases however, crystal lisers may also be added to one of the said high-quality plastic materials proposed according to this invention, always to promote further the acceleration of the crystallisation effect to high levels.
  • said crystailtsers are formed by nudeators consisting of inorganic nucleators, such as in particular talcum, wherein nucleation is defined as the first step of crystallisation, and the substances which are added are nucleators, wherein the end result is a crystallised plastic.
  • said crystallisers are formed by seeds or nucleators consisting of organic salts, e.g. carboxyl salts such as stearates.
  • a significant embodiment of the pressurised container system according to the invention comprises at least one inner container which is fully enclosed in the container, in particular wherein the inner container is primarily intended to receive the filling product therein.
  • this pressurised container system is attached to the base thereof, formtng a double container system in which the inner container is also supported by the main container.
  • said double container system is such that a double wall is produced therein, forming an air layer in- between, in particular thermally as an insulation layer for the heat.
  • said inner container is made of another plastic material, in particular PET for the outer container and PP for the inner container, or also for example PE.
  • PET for the outer container
  • PP for the inner container
  • PE for example PE
  • the present invention also relates to a method for production of a preform or container as specified in more detail below, namely of the type of a pressurised container packaging, wherein firstly a container casing profile with a longitudinal axis is formed, which is then cut to the desired length into an elongate element, wherein the production process of the pressurised container is as follows:
  • a preform is produced as a semi-finished product by injection moulding, wherein grains of plastic are dried, melted in a device and then driven into an injection mould;
  • said semi-finished product is blown in a blow mould into a bottle form, in particular tubular, as an secondary intermediate product;
  • step CC in an step CC which always follows, the underside of said secondary intermediate product is cut to a specific length, wherein a separately added injection-moulded base is then included in said secondary intermediate product.
  • the filling is introduced with the piston at the top and the piston is driven downward and then pressurised.
  • said connection is roduced by means of gluif3 ⁇ 4 ⁇ , folding or w lding, in particular by laser welding, nduction welding or uitmsorsio weiding,
  • the inner and outer containers are bfow ⁇ rnouided from one and the same preform.
  • He e* t is preform is produced using th known technique of over-moulding, wherein the preform consists of two layers, an inner layer and an outer layer, which may consist of two different materials,
  • there is no adhesion between the two said layers whereby after biow-mouding a separate inner and an outer container are formed.
  • ig. 2 shows a loo jtudinal view of this first embodiment of the container according to the invention, in cross-section alo g line ⁇ - ⁇ in Fig, 3, Fig, 3 s ows a bottom view of the embodiment of the container according to the nvention shown in Fig> 1.
  • Fig. 4 shows a similar longitudinal view to Fig. 2, but of trie mbodime t of the container according to t e invention presented in the preceding Figures, viewed in cross-section along tine 8»B of the respective Fig . ⁇ .
  • Fig. S shows a bottom view of the container according to the invention represented in Fig. 1 , but in a different embodiment thereof
  • Fig, ? shows a view simitar to Fig. 1 but of a furttier embodiment of the container according to the Invention.
  • Fig, ⁇ shows a view of an embodiment of a usual pressurised container packaging system with a standard piston at the top and pressu e regulator.
  • Fig. 9 shows a view of a further embodiment of a usual pressu ise container packaging system with a fiat disc as a piston at the top, and also with a pressure regulator.
  • Fig. 10 shows a view of yet a further embodiment of a usual pressurised container packaging system win a flat disc as a piston at the bottom, and also with a pressure regulator.
  • Fig. 11 shows a view of an embodiment of a pressurised container packaging system according to the invention, namely without pressure regulator UPV/PCD, with a piston at the fop.
  • Fig, 12 shows a view of a further embodiment of a p-essurised container packaging system according to the invention, again without UPV/PCD, with a fiat disc as a piston at the fop.
  • Fig. 13 snows a view of yet a further embodiment of a pressurised container packaging system according to the Invention, again without pressure regulator but with a standard piston similar to that In Fig. 11, but at the o tfom>
  • Fig. 14 shows a view of yet a further embodiment of a pressurised oonta er packaging system according to the Invention, again without UPWCO but with a flat disc as a piston at the bottom.
  • Fig s 11a to 14a shows similar depictions in enlarged scale of the views of the pressurised container packaging system without pressure regulator accordi g to Figs 1 to 14 respectively.
  • Description Th s invention in gen ral relates to a pressurised container sy3 ⁇ 4tem s as presented in ig, 1 amongst o hers, for ressuri ed packaging of continuous filling product, notably; f semi* isquid fluids, or in some cases discontinuous Hii g product of the type foams, past s, creams or also p ders.
  • This pressurised container system comprises a containe 1 whic Is provided with a neck part 23 ⁇ 4 which largely consists of a plastic polymer, wth a pouring openi g 24, adjoining this a cylindrical casing part 22 which at i s feoitom side Is cut awa , aod a base part 21. At its top side, this can be closed with closure, wherein the container 1 is designed to resist an internal pressure which is higher than atmospheric pressure.
  • the bottom side opposite the fop side is c sed by a separately added fease part 21 which is attached to the easing 22 by means of a connection 13. fig.
  • FIG. 2 shows tfiat the container Is provided with a movable piston S, ⁇ which is axially dispiaceabie following direction F ? along the main axis t of the pressurised container 1, between a bottom position A and a fop position S as shown in figs 11 * 12 and a to 14».
  • the piston ⁇ , ⁇ is mounted at the bottom in the container.
  • the piston ⁇ , 6 may also b mounted at the top In the container, as shown in Fig. 1 and 12, instead of at the bottom Me e, during fl n , the piston Is systematically pressed down. Th s has me great advantage that muc less air inclusions occur, so that in this way highly viscous products cars be tied with a high speed. This wa always a problem previously with highly viscous products,
  • the piston may also be a bidirectional piston which is dispiaceabie in redproc&tino: fashion along the main xis ⁇ between said bottom position A and fop position 8,
  • Fig, 11, 11a and 13 show a pressurised container system in which the piston 6 has a form protruding towards the top of the container, hich is suoh that in this way almost all the filling product can be expelled from the pressurised container system during operation thereof.
  • the piston takes the form matching the top 26 of the container, wherein in said top position 8 mis fits precisel therein and there Is almost no residual intermediate spac 27.
  • the piston has such a form that by means of this, the fling ⁇ . 1 A — product can be expetfed from tie container by the us r.
  • Tris is important ec use in normal aerosols and other similar packaging, t e product m& fee fully ) ⁇ « ⁇ &. This is an mm ⁇ of torn and mriduei waste, which s disadvantageous for recycling for exam l ,
  • the container 1 is for ex m le made of a plastic material Mftfcfo is blaxialy strefcbabie and has a h g intrinsic visc sity mmefy a nig Intrinsic viscosity which 3 ⁇ 4 cr ⁇ raolertsed hy a ig pressure resistance.
  • step n ay be applied coi>s in3 ⁇ 4 of a so-called heat sel b!ow-mouldlng pr cess, whereby sa accelerated crystalsation effect of the latter mater a!, hot»fi T, is further amplified, in particular, said pari uiar blow ⁇ -oioyiding step Is used in preforms w ich ar blow-moulded in healed moud , wherein m even higher crystallisation 1$ promoted, whereo ooth tempe atu - and press e-sfaftlity are further increased.
  • said ow moulds m y be heated to temperatures of at least 1 0 * 0, up to 220*C, whereby the cr ⁇ talilsafion acceleration of hoHI!i RET is promoted.
  • T e pressurised container y tem contains ehemioal reinfefcemont, including by means of increased cr stalnity, vitrification temperature, poiymer biends, including the use of and increasing the erystallinlfy; and or chemical resislsrsce in particular by means of blonds, coatings I cluding m r o arlng,
  • the container i made from a biaxJally etretchable plastic materia! with high Intrinsic viscosity, preferabiy polyesters, notar PET (polyethylene terephihatate) or PET copol esters wit a high pressure resistance.
  • these copoiyesters are naphtha e, isosorbid or eopolyesiers contai ing spifoglyooL Those copotyeetere typically give a higher pressure resistance, a higher temperature resistance or a combination of both than PET.
  • the container may also be made of a polyamide, polystyrene and OOC.
  • ef reinforcement As we8 as chemical reinfercement which acts en the composition of the container
  • 3 ⁇ 4 is also possible to use other forms ef reinforcement, such as with a set of physical or mechanical relfifofoements, e.g. a double container.
  • said reinforcement is formed by an inner container 2.
  • a pressurised container system comprises an inner eontaine which Is fully enclosed in the container, in particular wherein the inner container is primariy intended io receive f iiing product therein.
  • the pressuhsed co t i e system is attaebed to trio ase thereof «?ith a me s m 12, forming d uble mtftofcm system ⁇ M fcfa the inne container 2 is t us also su o ed by the mai container 1 ⁇
  • saki double container system is such that a dou le wall Is rovid d here, tormina, an air layer if sa w s, in particular thermally s a insulating layer for heat T e ben fit of th double container results from the fact that certain properties are plastic-dependent, where i Is understood i83 ⁇ 4ai a certain plastic is not necessarily both strong and ohemlc ⁇ ily resistant Thus relnfor ced PET is very resistant to r ssure arid0 temperature, but not resistant to certain chemicals.
  • safci inner container may fee made of another plastic material, in particular PET for the outer container and PP tor trie Inner c ntaine , or also for ex m 1 ⁇ 4 .
  • Aiso t poiypro ylene may tor example be used on the inner side and PET en the outer 5 side, whereby the good properties of PET are then combined with the good properties of polypropylene.
  • polypropylene and not PET is used fo the inner container, because PET does not toierate certain chemicals well, but does tolerate pressure and temperature. This is a secondary advantage of the double co italnar, 0
  • One feature of PET is that this is very resistant to temperature and pressure hut not very resistant to certain chemicals.
  • b fh& are used is to provide an inner and outer container in the case of double containers, in order to solve this problem, 5
  • This choice is also dependent on what the filling product will be, and on the tiling pressure concerned since this is at least 20 bar, wherein PET is then a ⁇ com a d choice If the wall thickness can be sufficiently high.
  • wai thickness namely to mm axim urn, because above this l w* moulding is difficult.
  • Wall thicknesses above 0,8 to mm can no longer fee blow-mouldedD with an oplimum wail thickness distribution.
  • Ths is lor constructional m so s, wherein a e arately add d ase must necessarily be fiddly connected, i order t replace the originally it base of the outer container, after 3 ⁇ 4 e second container as been inserted.
  • the present invention thus also r lates to a mef od for producing a preform o containe of o type for pressurised container ackaging wherein firstly a container casing profil with a longitudinal axis Is formed, thereafter this is out to the desired length Int an elongate element wherein the production process of the pressurised container takes place according to the following ste s: firstly a preform is made s semi ⁇ nished product by injection mouiding AA, wherein grains of plastic are dried, melted in a device and then driven into an injection mould; then said emifini he produot is blown SB in a blow mould into a bottie form, i.e.. tubular, as an secondary intermediate prodoct; and finally the underside of said secondar ntermediate product is cut CC to a specific length, wherein a separately added injectism-mouided base is then Included In said secondary intermediate produc
  • the inner and outer container are blow-mo ided from one and the same preform.
  • the preform Is produced using th k own technique of over-moulding, wherein the preform consists of two layers, an Inner layer end an outer layer, which may consist of two different maferiate.
  • there is no aefiesion between these layers whereby alter olow-mouudir ⁇ , a separate inner and an outer container are produced.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Basic Packing Technique (AREA)

Abstract

La présente invention concerne un système de contenant pour le conditionnement sous pression, d'un produit de remplissage continu, de fluides (semi-) liquides ou du type mousses, pâtes ou poudres, comprenant un contenant (1) qui est réalisé en polymère plastique et pourvu d'une partie goulot (23) dotée d'une ouverture de versement (24), une partie enveloppe cylindrique (22) qui est découpée au niveau de son extrémité opposée, et une partie formant base. Le contenant peut être fermé sur le côté supérieur par l'intermédiaire d'un élément de fermeture (5) et exposé à une pression interne > à la pression atmosphérique. Le système selon l'invention est remarquable en ce que ladite partie enveloppe (22), est découpée sur son côté base et fermée par une partie base (21) ajoutée séparément, qui est attachée à l'enveloppe (22) au moyen d'un élément de liaison (13) et en ce qu'il est prévu un piston mobile (5, 6) qui peut se déplacer axialement le long de l'axe principal du contenant sous pression entre une position inférieure et une position supérieure (A, B). L'invention porte également sur un procédé pour la production de celui-ci.
PCT/BE2016/000055 2015-12-28 2016-12-28 Système de conditionnement comprenant un contenant en plastique pour un produit de remplissage et procédé de fabrication correspondant WO2017112977A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE201500276 2015-12-28
BE2015/0276 2015-12-28

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WO2017112977A2 true WO2017112977A2 (fr) 2017-07-06
WO2017112977A9 WO2017112977A9 (fr) 2017-09-21
WO2017112977A3 WO2017112977A3 (fr) 2017-10-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210130079A1 (en) * 2018-07-09 2021-05-06 Alpla Werke Alwin Lehner Gmbh & Co. Kg Pressure container of plastic

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023280884A1 (fr) 2021-07-06 2023-01-12 A.P.R.S. Bv Contenant distributeur de fluide et procédé pour la production d'un contenant distributeur de fluide

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
JPS5493214A (en) * 1977-12-29 1979-07-24 Toppan Printing Co Ltd Aerosol container made of plastic
FR2567851B1 (fr) * 1984-07-17 1987-03-20 Oreal Recipient en matiere plastique comportant un fond rapporte muni d'un raidisseur
NZ227284A (en) * 1987-12-22 1991-08-27 Abplanalp Robert H Extruded plastics container with ends of body portion heat sealed into recessed undercuts of the end panels
US6464111B2 (en) * 1995-11-13 2002-10-15 L'oreal Dispenser containing a product and dispensing method
FR2852301B1 (fr) * 2003-03-13 2006-02-10 Valois Sas Dispositif de distribution de produit fluide
BE1020615A5 (nl) * 2011-12-05 2014-01-07 Resilux Behouderverpakking voor verpakking onder druk van vulgoed i.h.b. half vloeibaar, en werkwijze hiervoor.
FR3008078B1 (fr) * 2013-07-08 2016-04-01 Lablabo Dispositif a recipient rigide et poche cylindrique souple pour le conditionnement de fluides.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210130079A1 (en) * 2018-07-09 2021-05-06 Alpla Werke Alwin Lehner Gmbh & Co. Kg Pressure container of plastic

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WO2017112977A3 (fr) 2017-10-26

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