EP0912420A1 - Recipient pourvu d'ouvertures d'equilibrage de la pression - Google Patents
Recipient pourvu d'ouvertures d'equilibrage de la pressionInfo
- Publication number
- EP0912420A1 EP0912420A1 EP97931672A EP97931672A EP0912420A1 EP 0912420 A1 EP0912420 A1 EP 0912420A1 EP 97931672 A EP97931672 A EP 97931672A EP 97931672 A EP97931672 A EP 97931672A EP 0912420 A1 EP0912420 A1 EP 0912420A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- inner bag
- outer container
- weld seam
- openings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S215/00—Bottles and jars
- Y10S215/902—Vent
Definitions
- the invention relates to a container produced in the coextrusion blow molding process, consisting of an essentially rigid outer container and an easily deformable inner bag, each made of different types of thermoplastic plastics that do not weld together, with a container opening and at least two pressure compensation openings in the wall of the outer container for pressure compensation in the space between the Outer container and the inner bag upon contraction of the inner bag, wherein when excess material is squeezed off at the bottom of the blow mold, the inner bag is closed by a bottom weld seam and this bottom weld seam is clamped in the likewise closed bottom of the outer container.
- Such a container is described in DE 41 39 555 C2.
- an outwardly projecting web is formed on the bottom of the outer container, in which material of the outer container is brought together when the blow mold is closed, since the material of the inner bag retracts inward from the squeezing edge due to a jamming effect in the region of the projecting web.
- material of the outer container passes over part of the height of the above Bridges in contact with each other, creating a closed weld.
- the bottom weld seam of the inner bag is anchored in the adjacent area of the web.
- the web can have, for example, an approximately kite-shaped cross-sectional shape, but other, for example curved, cross-sectional shapes of the web can also lead to a welded bottom seam of the outer container.
- the bottom weld seam of the inner bag can also be attached to the bottom of the outer container in a different manner, for example by means of suitable sliders in the blow mold.
- the pressure compensation openings on the outer container are formed by squeezing the tubular blank in the shoulder area when the blow mold is closed, the material being squeezed out smoothly without the formation of a protruding web, so that the two material layers of the outer container do not come into contact come together because this is prevented by the double layer between the inner bag.
- these pressure equalization openings on both sides lie at points which are in alignment with the intersection points of the bottom weld seam with the circumferential seam of the container.
- these pressure compensation openings lie in the circumferential direction on the intersection lines of a plane passing through the central longitudinal axis of the container and the bottom seam with the peripheral wall of the container. If the point of intersection of the bottom weld seam with the peripheral wall is mentioned above, this also includes the case that the bottom weld seam does not extend over the entire diameter of the container, as a result of which the intersection points are formed in this case by a line extending the bottom weld seam.
- the volume of the inner bag is reduced and air from the surroundings of the container enters the space between the inner bag and the outer container to equalize the pressure. A certain vacuum always remains in the container, which maintains the contraction of the inner bag.
- the inner bag is drawn in a horizontal section, i.e. essentially in a star shape in a plane perpendicular to the longitudinal axis of the container when the contents of the container are discharged.
- the four detached areas increase in size, so that the star shape mentioned above arises approximately.
- the present invention has for its object to develop a container of the type under consideration so that the negative pressure that occurs in the inner bag after release of filling substance is reduced.
- At least one pressure compensation opening is formed in the outer container on both sides of the bottom weld seam, all pressure compensation openings being offset with respect to the intersection points of the bottom weld seam (or their extension) with the peripheral wall of the outer container. It is preferred that the pressure compensation openings are arranged offset by approximately 90 ° to the intersection points, although the invention is not limited to this.
- the pressure equalization openings in the container according to the invention are no longer in the narrower region of the intersection points of the bottom weld seam with the circumferential wall, but rather in an area offset by 90 °, so that the inner bag is at least at the initial contraction no longer replaces in the area of the intersection points.
- This circumferential area is preferably offset by 45o to 135o to the intersection points.
- the vacuum can be minimized under otherwise identical boundary conditions by arranging two diametrically opposite pressure compensation openings in a plane which is at right angles to the plane running through the bottom seam and the longitudinal central axis of the container.
- pressure equalization openings can also be formed at a distance one above the other on each side of the bottom weld seam.
- These pressure compensation openings can be formed by elongated incisions in the wall of the outer container, for example by cutting them into the wall with a knife, punching tool or with a laser, it then being possible to tear open a remaining inner wall section by applying a compressive force.
- This can be accomplished, for example, in the case of a container whose outer wall has a wall thickness of approximately 0.7 to 0.9 mm in such a way that a crescent-shaped incision is made with a knife guided on a circular path, which cuts the wall except for one cut through the remaining safety wall thickness of approx. 0.2 mm, which ensures that, despite the tolerances that occur, the inner bag cannot be damaged.
- a pressure stamp can be pressed so strongly against the outer wall on one side of the cut that the remaining wall section bursts open.
- a pressure compensation opening can be formed with a punching tool or with a laser.
- the pressure equalization openings can also be formed by punctiform bores or punctures in the wall of the outer container, it being possible for the injection needle to be provided with a central bore which is connected to a pressure medium source. If the injection needle penetrates the wall of the outer container, the pressure medium, which may be air, water or a gel, for example, is pressed so firmly against the inner bag at the moment of passage from the wall of the outer container that the latter retreats, so that the inner bag cannot be damaged by the needle.
- the pressure medium which may be air, water or a gel, for example
- the container according to the invention can obviously be a so-called wide-neck container, since the pressure equalization openings can be formed not only in the shoulder area, but at any point on the outer container.
- FIG. 1 shows a vertical section through a container of the type under consideration, which is produced in coextrusion blow molding
- Figure 2 is a perspective view of a known container with open shoulder seams.
- FIG. 3 shows a horizontal section through the container according to FIG. 2 above the pinched bottom seam of the inner bag in a state in which the inner bag has contracted;
- Fig. 4 is a perspective view of a container according to the invention in a representation corresponding to Fig. 2 and
- FIG. 5 shows a horizontal section through the container according to FIG. 4 in a representation corresponding to FIG. 3.
- the container 1 shown in FIG. 1 contains a container neck 2 and a shoulder section 3.
- a pump for dispensing the container contents can be attached to the container opening 4, without the invention being restricted to this.
- the container can also be designed as a squeeze bottle in which the container wall is pressed together by hand to dispense the contents of the container, and the container can also be a so-called wide-neck container without a shoulder section.
- kite-shaped web 5 is formed, in the lower region of which in the figure the material layers of the outer container 6 (see FIG. 3) touch, since in the mold cavity the Webs have withdrawn the two squeezed material layers of the inner bag 7 a little from the separation point upwards.
- the weld seam of the inner bag formed during the squeezing process is clamped in the upper region of the web 5 and is thus held in the axial direction.
- Fig. 2 shows a known container, in which the pressure equalization required for dispensing the container content in the space between the outer container and the inner bag is effected by open shoulder seams 8 of the outer container 6, which are formed by a smooth, seamless squeezing process of the blow mold in this area.
- the open shoulder seams 8 lie in the vertical plane 9, which runs through the axis of the web 5 and the central longitudinal axis 10 of the container.
- the points of intersection of this plane 9 with the peripheral wall of the outer container 6 are designated in FIG. 3 by the reference number 11.
- the inner bag 7 detaches from the inner wall of the outer container at four increasingly larger areas, specifically at the areas 12 surrounding the intersection points 11, at which - seen in the circumferential direction of the container - the air for pressure equalization enters as well as at areas 13 offset from this by about 90 °. This has the consequence that a star-like contraction form of the inner container is formed.
- the contraction of the inner container 7 from four sides requires a relatively large collapse force, which corresponds to a likewise relatively large negative pressure in the inner bag, with which this form of contraction is maintained.
- the result is a relatively large permeation, risk of leakage of the inner bag 7 and a relatively large residual amount that can not be discharged from the inner bag.
- FIG. 4 shows, in a representation corresponding to FIG. 2, a container 1 according to the invention.
- This container does not contain any open shoulder seams for pressure equalization, but on the plane 9 or the position of the open shoulder seams 8 according to FIG. 2 by an angle ⁇ of 90 ° in each case Staggered locations two pressure equalization openings 14, which are marked purely schematically in Figure 5. Since no pressure equalization openings are provided in the area of the intersection points 11, the inner bag 7 does not detach from the inner wall of the outer container 6 when the contents of the container are released, ie there are no contraction sections 12 of the star-shaped contraction according to FIG. 3. The inner bag 7 only pulls from two sides, this area increasingly spreading around the pressure equalization openings 14 and being identified in FIG. 5 by the reference symbol 15. A so-called "dog bone shape" of inner bag contraction is increasingly emerging.
- This contraction of the inner bag which occurs only from two sides, has the consequence that it requires only a lower collapsing force, which corresponds to a lower vacuum to maintain the contraction form.
- the result is less permeation, a reduced risk of leakage and a smaller residual amount that cannot be discharged.
- the contraction which only takes place from two sides can of course not only be brought about by the fact that the pressure equalization openings are formed exactly offset by 90 ° to the intersection points 11. It is important that there are no pressure equalization openings in the closer circumferential area to the intersection points 11, which can cause the inner bag 7 to detach from the wall of the outer container 6 in this area.
- the bilateral contraction can of course also be caused by the fact that further pressure equalization openings 14 are formed on both sides of the pressure equalization openings, but these must maintain a sufficient circumferential distance from the intersection points 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Packages (AREA)
- External Artificial Organs (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Measuring Fluid Pressure (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9730621T SI0912420T1 (en) | 1996-07-04 | 1997-06-27 | Container with pressure compensation holes |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19626968A DE19626968A1 (de) | 1996-07-04 | 1996-07-04 | Behälter mit Druckausgleichsöffnung |
DE19626968 | 1996-07-04 | ||
PCT/DE1997/001348 WO1998001366A1 (fr) | 1996-07-04 | 1997-06-27 | Recipient pourvu d'ouvertures d'equilibrage de la pression |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0912420A1 true EP0912420A1 (fr) | 1999-05-06 |
EP0912420B1 EP0912420B1 (fr) | 2003-12-17 |
Family
ID=7798927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97931672A Expired - Lifetime EP0912420B1 (fr) | 1996-07-04 | 1997-06-27 | Recipient pourvu d'ouvertures d'equilibrage de la pression |
Country Status (11)
Country | Link |
---|---|
US (1) | US6109468A (fr) |
EP (1) | EP0912420B1 (fr) |
JP (1) | JP3935213B2 (fr) |
AT (1) | ATE256614T1 (fr) |
AU (1) | AU717167B2 (fr) |
CA (1) | CA2258853A1 (fr) |
DE (3) | DE19626968A1 (fr) |
DK (1) | DK0912420T3 (fr) |
ES (1) | ES2213218T3 (fr) |
PT (1) | PT912420E (fr) |
WO (1) | WO1998001366A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017004657A1 (de) | 2017-05-16 | 2018-11-22 | Gaplast Gmbh | Behälter mit Innenbeutel |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6503440B2 (en) * | 2000-04-07 | 2003-01-07 | Boehringer Ingelheim Pharma Kg | Process for making a container with a pressure equalization opening and containers produced accordingly |
DE10256015B4 (de) * | 2002-11-30 | 2005-04-14 | Gaplast Gmbh | Verfahren zur Herstellung eines Behälters mit wenigstens einer Druckausgleichsöffnung |
FR2891529B1 (fr) * | 2005-10-04 | 2007-12-07 | Valois Sas | Organe de recouvrement, procede de fabrication d'un tel organe et distributeur comprenant un tel organe. |
DE102006012487B4 (de) | 2006-03-16 | 2008-08-21 | Gaplast Gmbh | Verfahren und Vorrichtung zur Herstellung eines Behälters |
US20080257883A1 (en) | 2007-04-19 | 2008-10-23 | Inbev S.A. | Integrally blow-moulded bag-in-container having an inner layer and the outer layer made of the same material and preform for making it |
US9919841B2 (en) | 2007-04-19 | 2018-03-20 | Anheuser-Busch Inbev S.A. | Integrally blow-moulded bag-in-container having interface vents opening to the atmosphere at location adjacent to bag's mouth, preform for making it; and processes for producing the preform and bag-in-container |
GB2459852B (en) * | 2008-05-06 | 2011-02-16 | Toly Products | Compact liquid cosmetics |
EP2352623B1 (fr) * | 2008-10-17 | 2013-02-13 | The Gillette Company | Dispositif dépilatoire à distribution de liquide |
MX2012011838A (es) | 2010-04-15 | 2012-11-09 | Guillette Company | Dispositivo dispensador de fluido para la eliminacion de pelo. |
DE102010024980B4 (de) | 2010-06-24 | 2012-04-26 | Gaplast Gmbh | Behälter mit Innenbeutel |
WO2015153598A1 (fr) | 2014-04-02 | 2015-10-08 | Kuvee, Inc. | Récipient pour conserver un contenu liquide |
US10723500B2 (en) | 2014-12-09 | 2020-07-28 | Kyoraku Co., Ltd. | Delamination container, method for attaching cap to delamination container, and method for manufacturing delamination container |
US10472162B2 (en) | 2016-09-09 | 2019-11-12 | The Clorox Company | Continuous spray dispenser for highly corrosive and other low compatibility products |
DE102021116278B4 (de) * | 2021-06-23 | 2024-02-29 | Gaplast Gmbh | Verfahren und Vorrichtung zur Herstellung eines Behälters bestehend aus einem steifen Außenbehälter und einem leicht verformbaren Innenbeutel |
DE202021103382U1 (de) | 2021-06-23 | 2021-08-31 | Gaplast Gmbh | Behälter |
DE102021116277B4 (de) | 2021-06-23 | 2024-07-04 | Gaplast Gmbh | Verfahren zur Herstellung eines Behälters aus einem steifen Außenbehälter und einem leicht verformbaren Innenbeutel |
DE102021121806A1 (de) * | 2021-08-23 | 2023-02-23 | Gaplast Gmbh | Behälter bestehend aus einem steifen Außenbehälter und einem verformbaren Innenbeutel sowie Verfahren zur Herstellung eines derartigen Behälters |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2743038A (en) * | 1952-12-04 | 1956-04-24 | Jack R Ferries | Paste dispenser |
FR1251113A (fr) * | 1960-03-14 | 1961-01-13 | Réservoir tel que tube contenant des produits pour l'hygiène et la beauté | |
DE3446697A1 (de) * | 1984-12-21 | 1986-06-26 | Henkel KGaA, 4000 Düsseldorf | Gebrauchsfertiges klebstoffgebinde |
DE3442092A1 (de) * | 1984-11-17 | 1986-05-28 | Kautex Werke Reinold Hagen AG, 5300 Bonn | Verfahren zum herstellen einer mit einer verschliessbaren oeffnung versehenen verpackung und nach diesem verfahren hergestellte verpackung |
DE8437419U1 (de) * | 1984-12-21 | 1985-03-07 | Henkel KGaA, 4000 Düsseldorf | Behaelter fuer luftempfindliche pastoese Massen |
AU666324B2 (en) * | 1991-08-05 | 1996-02-08 | Yoshino Kogyosho Co., Ltd. | Bottle of laminate structure and method of making said bottle |
DE4139555A1 (de) * | 1991-09-18 | 1993-03-25 | Gaplast Gmbh | Behaelter |
DE69632354T2 (de) * | 1995-03-10 | 2005-05-04 | Yoshino Kogyosho Co., Ltd. | Behälter aus laminiertem, leicht schälbarem Material |
-
1996
- 1996-07-04 DE DE19626968A patent/DE19626968A1/de not_active Withdrawn
-
1997
- 1997-06-27 WO PCT/DE1997/001348 patent/WO1998001366A1/fr active IP Right Grant
- 1997-06-27 DE DE29780382U patent/DE29780382U1/de not_active Expired - Lifetime
- 1997-06-27 ES ES97931672T patent/ES2213218T3/es not_active Expired - Lifetime
- 1997-06-27 DE DE59711141T patent/DE59711141D1/de not_active Expired - Lifetime
- 1997-06-27 EP EP97931672A patent/EP0912420B1/fr not_active Expired - Lifetime
- 1997-06-27 AU AU35370/97A patent/AU717167B2/en not_active Ceased
- 1997-06-27 JP JP50464798A patent/JP3935213B2/ja not_active Expired - Lifetime
- 1997-06-27 CA CA002258853A patent/CA2258853A1/fr not_active Abandoned
- 1997-06-27 US US09/202,916 patent/US6109468A/en not_active Expired - Lifetime
- 1997-06-27 DK DK97931672T patent/DK0912420T3/da active
- 1997-06-27 PT PT97931672T patent/PT912420E/pt unknown
- 1997-06-27 AT AT97931672T patent/ATE256614T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO9801366A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017004657A1 (de) | 2017-05-16 | 2018-11-22 | Gaplast Gmbh | Behälter mit Innenbeutel |
US10364087B2 (en) | 2017-05-16 | 2019-07-30 | Gaplast Gmbh | Container with an inner bag |
DE102017004657B4 (de) | 2017-05-16 | 2021-09-23 | Gaplast Gmbh | Behälter mit Innenbeutel |
Also Published As
Publication number | Publication date |
---|---|
ATE256614T1 (de) | 2004-01-15 |
JP3935213B2 (ja) | 2007-06-20 |
AU3537097A (en) | 1998-02-02 |
DE29780382U1 (de) | 1998-10-08 |
AU717167B2 (en) | 2000-03-16 |
ES2213218T3 (es) | 2004-08-16 |
DE59711141D1 (de) | 2004-01-29 |
CA2258853A1 (fr) | 1998-01-15 |
EP0912420B1 (fr) | 2003-12-17 |
JP2000513683A (ja) | 2000-10-17 |
WO1998001366A1 (fr) | 1998-01-15 |
DK0912420T3 (da) | 2004-04-05 |
US6109468A (en) | 2000-08-29 |
PT912420E (pt) | 2004-05-31 |
DE19626968A1 (de) | 1998-01-15 |
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