WO2001039957A1 - Procede de production de recipients a deux couches pour soutirer des liquides - Google Patents

Procede de production de recipients a deux couches pour soutirer des liquides Download PDF

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Publication number
WO2001039957A1
WO2001039957A1 PCT/EP2000/011941 EP0011941W WO0139957A1 WO 2001039957 A1 WO2001039957 A1 WO 2001039957A1 EP 0011941 W EP0011941 W EP 0011941W WO 0139957 A1 WO0139957 A1 WO 0139957A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
preform
blow mold
seam
area
Prior art date
Application number
PCT/EP2000/011941
Other languages
German (de)
English (en)
Inventor
Ulrich Stroetmann
Burkhard Peter Metzger
Torsten Kuehn
Original Assignee
Boehringer Ingelheim Pharma Kg
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 Boehringer Ingelheim Pharma Kg filed Critical Boehringer Ingelheim Pharma Kg
Priority to AU17056/01A priority Critical patent/AU1705601A/en
Publication of WO2001039957A1 publication Critical patent/WO2001039957A1/fr

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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3086—Interaction between two or more components, e.g. type of or lack of bonding
    • B29C2949/3094—Interaction between two or more components, e.g. type of or lack of bonding preform having at least partially loose components, e.g. at least partially loose layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B29L2009/001—Layered products the layers being loose

Definitions

  • the present invention relates to a method for producing containers consisting of a rigid, substantially dimensionally stable outer container and an easily deformable inner container (two-layer container) which is connected to the outer container in such a way that a medium, e.g. a liquid, cream, gel, etc., preferably a liquid, by applying a vacuum, e.g. can be completely suctioned off using a riser.
  • a medium e.g. a liquid, cream, gel, etc., preferably a liquid
  • the inner container is preferably firmly connected to the outer container in the region of the opening and in the region of the bottom.
  • DE 42 39 555 describes two-layer containers produced by co-extrusion processes with a sealed inner container and an outer container.
  • the container is blown from a two-layer preform, the two layers being made of non-weldable materials.
  • the bottom seam of the outer container is not welded, which is achieved in that the preform protrudes beyond the bottom area of the blow mold and this area is squeezed off during the co-extrusion blow molding process.
  • the inside seam of the inner container is welded.
  • the two opposite areas of the outer seam press firmly against each other and thereby clamp the welded seam between the inner container.
  • the outer seam of the outer container itself can only be squeezed off, but not welded.
  • the outer container also has an unwelded seam in its shoulder area, which is nevertheless firmly closed by pressing the two individual parts together.
  • the inner container must be able to collapse in order to completely remove a liquid from the inner container by applying a negative pressure. This requires a pressure equalization in the space between the inner and the outer container. If a vacuum is created in this room, this counteracts the collapse of the inner container.
  • the outer seam of the outer container is so tight that no pressure equalization can be brought about it.
  • This method has the disadvantage that, after the co-extrusion blow molding, a further complex process step has to be used, in which there is a risk that the inner container will be injured without being aware of it during the introduction of the hole or holes into the outer container.
  • the latter is of considerable disadvantage especially if the container is intended for storing sensitive substances and the perfect quality of these ingredients cannot be guaranteed due to the process, e.g. in the case of medical or pharmaceutical solutions.
  • the present invention solves the problem known from the prior art by creating a new method based on a co-extrusion process for producing a two-layer container, in which pressure compensation options in the area of the shoulder seam of the outer container are virtually in one operation with the co Extrusion bubbles can be introduced into the container so that the inner container can not be injured.
  • the method according to the invention creates a new two-layer container from a two-layer preform by using a blow mold, with an easily deformable inner container with welded seams throughout, which is firmly connected to the outer container in the region of the bottom and in the region of the opening, and a rigid one , essentially dimensionally stable outer container, in which at least one of the two shoulder seams is not welded to one another over a partial area and is permanently open.
  • the blow mold represents a negative impression of the finished container, the outer shape of which is approximately rotationally symmetrical.
  • the blow mold can consist of two molded parts or several molded parts. It preferably consists of two molded parts, each of which represents the negative of a container halved in length.
  • the Vorfb 'rmling consists of an inner tube and an outer tube. Both hoses are made of different materials, each of which can be welded to itself, but not both materials together.
  • the material of the outer tube is preferred, a thermoplastic plastic. Polypropylene is particularly preferred.
  • the material of the inner tube is also preferred, a thermoplastic. Polyethylene is particularly preferred.
  • the inner tube of the preform has a thickness of 0.001 mm to 0.5 mm, preferably 0.075 mm to 0.15 mm, very particularly preferably 0.09 mm to 0.11 mm.
  • the outer tube of the preform has a thickness of 0.6 mm to 1.5 mm, preferably 0.75 mm to 1.2 mm, very particularly preferably 0.9 mm to 1.1 mm.
  • the dimensions of the preform are preferred, so that the process creates a container with a pinch seam in the shoulder area and preferably also in the bottom area of the bottle-shaped container.
  • the inner diameter of the preform is larger than the neck area or the opening area of the negative impression of the container in the blow mold.
  • the outer diameter is preferably so large that at most the outer tube can protrude beyond the lateral edge of the belly region of the negative impression of the container in the blow mold during the co-extrusion blow molding. That the
  • the outer diameter of the preform is either smaller than the diameter of the belly of the negative impression of the container in the blow mold, or the same size or slightly larger. In any case, however, the outer diameter is at most so large that a squeeze-weld seam can occur during the co-extrusion process only in the abdominal region of the future outer container, but not in the abdominal region of the future inner container.
  • the outer diameter is preferably so large that pinch-weld seams are formed only in the shoulder regions of the container, but not in the abdominal region.
  • the length of the preform is preferably greater than the length of the later container. That is, the preform protrudes beyond the bottom area of the negative impression of the container in the blow mold. This causes a pinch-weld seam to form at this point in the inner container and an unwelded pinch seam on the outer container, into which the pinch-weld seam of the inner container is firmly clamped.
  • An essential feature of the method is that one or more projections are or are formed in the two halves of the blow mold at the level of at least one of the two shoulder regions of the negative impression of the container. In the closed state of the blow mold, at least one protrusion of one half of the blow mold is then opposite or slightly offset from a protrusion of the other half.
  • the purpose of the projections is that they slide into the jacket of the outer container during the co-extrusion blow molding, so that when the blow mold is opened, a force is exerted on the unwelded squeeze seam in the shoulder region of the outer container by means of which the squeeze seam is easily opened , In the course of the further
  • the depth of these protrusions is such that only the outer tube of the preform is pressed into these protrusions during co-extrusion blowing, but not the inner tube.
  • the shape of the protrusions can be any, angular, round, oval, pointed, conical, etc.
  • the side of the protrusions that is colateral to the edge of the corresponding molded part and thus colateral to the symmetrical cut surface along the negative impression of the container can be wider than that perpendicular to it trained area.
  • the projections are expediently formed below the edge of the molded part, that is to say below the symmetrical cutting surface along the negative impression of the container. This ensures that the projections only press into the jacket of the outer container, but not into the pinch-weld seam of the inner container created during the co-extrusion blow molding. At the same time, the unwelded seam of the outer container can be opened with little effort.
  • the shape and dimension of the projections is such that, when the container is blown out, they press slightly into the jacket of the outer tube, but cannot pierce it and thus cannot injure the jacket of the inner container.
  • the Protrusions are also not sharp-edged.
  • the shape is such that the projections in a direction perpendicular to the above-mentioned symmetrical cutting surface along the container can only be pulled out of the outer jacket against a small resistance.
  • the container according to the invention created by the method according to the invention can be closed with any closure.
  • Preferred closures are disclosed, for example, in the patent specifications PCT / EP 9503183, PCT / EP 9701958 and in the German application with the file number 198 47 968.9, the contents of which are hereby incorporated by reference.
  • the container according to the invention is particularly suitable for storing sensitive substances, such as medical or pharmaceutical solutions or suspensions.
  • Preferred pharmaceutical formulations can also be found in the patent applications mentioned with regard to the sealing caps, to which express reference is also made in this connection.
  • Pharmaceutical formulations as described in WO 97/01329 are particularly preferred.
  • FIG. 1 shows the approximately rotationally symmetrical container (1) produced by the method according to the invention, shown from the outside.
  • the container consists of an opening (2), a neck (3), a shoulder area (4), an abdominal area (5) and the bottom part (6).
  • the non-welded shoulder seam (7) is shown slightly open, the dimension of the opening not being drawn to scale.
  • FIG. 2 shows part of a two-part symmetrical blow mold of the negative impression of the container according to FIG. 1.
  • the reference numbers are identical to those of the container (1) according to FIG. 1.
  • the area defined by the edge (8) corresponds to the symmetrical cut surface along the container (1 ).
  • the projection (9) is formed in both shoulder areas shown. In this case the projection is flat on the upper side and lies below the surface of the edge (8).
  • Figure 3 shows various design options for the projection.
  • Figure 3a shows a projection in the form of a cut cone, the arrow marks the view that corresponds to the plan view of Figure 2.
  • Figure 3b shows a flat oval projection (9).
  • FIG. 3c shows a conical projection (9)
  • FIG. 3d shows a cuboid projection (9)
  • FIG. 3e shows a projection (9) which is slightly rounded downwards and which offers a somewhat greater resistance to the jacket when pulled out (movement in the direction of the arrow), than the projections (9) according to Figures 3a to 3d.
  • FIG. 4 shows a preform (10) with an inner tube (11) and an outer tube (12) lying above the blow mold according to FIG. 2, before the co-extrusion process begins.
  • Figure 5 shows a pinch seam in the region of the shoulder region in cross section immediately after its formation.
  • the area (13) represents the welded pinch seam of the inner jacket (11).
  • the area (14) represents the unwelded pinch seam of the outer jacket (12), which is embedded in the two blow molded parts (8) and (8a).
  • the projections (9) drill laterally next to the squeeze-weld seam of the inner casing (11) in the outer casing (12).
  • the arrows show the direction of pull in which the two projections (9) move when the molded parts are opened in order to open the pinch seam (14) of the outer container (12).
  • Figure 6 shows essentially the same picture as Figure 5, with the difference that the two blow molded parts (8) and (8a) have already been opened a little.
  • the opening (15) of the pinch seam (14) of the outer container has already been formed, and the projections (9) are just sliding out of the outer container.
  • the squeezed part of the preform is not shown in this drawing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Tubes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé permettant de produire des récipients (1). Chaque récipient comprend un récipient extérieur rigide sensiblement indéformable et un récipient rigide aisément déformable (récipient à deux couches), qui est lié au récipient extérieur de sorte qu'un liquide situé à l'intérieur puisse être entièrement vidé par aspiration, par application d'une dépression, par ex. au moyen d'un tuyau ascendant. Le récipient intérieur est solidarisé avec le récipient extérieur de préférence dans la zone de l'ouverture et dans celle du fond (6).
PCT/EP2000/011941 1999-12-04 2000-11-29 Procede de production de recipients a deux couches pour soutirer des liquides WO2001039957A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU17056/01A AU1705601A (en) 1999-12-04 2000-11-29 Method for producing double layer containers for drawing out liquids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19958577.6 1999-12-04
DE19958577A DE19958577A1 (de) 1999-12-04 1999-12-04 Verfahren zur Herstellung von zweischichtigen Behältern

Publications (1)

Publication Number Publication Date
WO2001039957A1 true WO2001039957A1 (fr) 2001-06-07

Family

ID=7931477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/011941 WO2001039957A1 (fr) 1999-12-04 2000-11-29 Procede de production de recipients a deux couches pour soutirer des liquides

Country Status (6)

Country Link
AR (1) AR026679A1 (fr)
AU (1) AU1705601A (fr)
CO (1) CO5280105A1 (fr)
DE (1) DE19958577A1 (fr)
PE (1) PE20010947A1 (fr)
WO (1) WO2001039957A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3299144A1 (fr) * 2016-09-26 2018-03-28 Boehringer Ingelheim International GmbH Procédé de formation et/ou de test d'une poche à l'intérieur d'un récipient
EP3403805A1 (fr) * 2017-05-16 2018-11-21 Gaplast GmbH Réservoir à sac intérieur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182094A2 (fr) * 1984-11-17 1986-05-28 Kautex-Werke Reinold Hagen Aktiengesellschaft Procédé de fabrication d'un emballage muni d'une ouverture pouvant être refermée
DE4139555A1 (de) * 1991-09-18 1993-03-25 Gaplast Gmbh Behaelter
US5567377A (en) * 1991-08-05 1996-10-22 Yoshino Kogyosho Co., Ltd. Method of manufacturing a multilayer bottle
DE19737964C1 (de) * 1997-08-30 1998-10-08 Gaplast Gmbh Verfahren zur Herstellung eines Behälters sowie Behälter mit Druckausgleichsöffnungen
US5921438A (en) * 1992-05-11 1999-07-13 Yoshino Kogyosho Co., Ltd. Laminated bottle and pump device therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182094A2 (fr) * 1984-11-17 1986-05-28 Kautex-Werke Reinold Hagen Aktiengesellschaft Procédé de fabrication d'un emballage muni d'une ouverture pouvant être refermée
US5567377A (en) * 1991-08-05 1996-10-22 Yoshino Kogyosho Co., Ltd. Method of manufacturing a multilayer bottle
DE4139555A1 (de) * 1991-09-18 1993-03-25 Gaplast Gmbh Behaelter
US5921438A (en) * 1992-05-11 1999-07-13 Yoshino Kogyosho Co., Ltd. Laminated bottle and pump device therefor
DE19737964C1 (de) * 1997-08-30 1998-10-08 Gaplast Gmbh Verfahren zur Herstellung eines Behälters sowie Behälter mit Druckausgleichsöffnungen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3299144A1 (fr) * 2016-09-26 2018-03-28 Boehringer Ingelheim International GmbH Procédé de formation et/ou de test d'une poche à l'intérieur d'un récipient
WO2018054551A1 (fr) 2016-09-26 2018-03-29 Boehringer Ingelheim International Gmbh Procédé de formation et/ou de test d'un sachet à l'intérieur d'un contenant
US10859463B2 (en) 2016-09-26 2020-12-08 Boehringer Ingelheim International Gmbh Method for forming and/or testing a bag in the interior space of a container
EP3825674A1 (fr) 2016-09-26 2021-05-26 Boehringer Ingelheim International GmbH Procédé de formation et/ou de test d'une poche à l'intérieur d'un récipient
EA039129B1 (ru) * 2016-09-26 2021-12-08 Бёрингер Ингельхайм Интернациональ Гмбх Способ образования и/или испытания пакета во внутреннем пространстве емкости
IL264832B (en) * 2016-09-26 2022-08-01 Boehringer Ingelheim Int A method for creating and/or testing a bag in the interior of a container
EP3403805A1 (fr) * 2017-05-16 2018-11-21 Gaplast GmbH Réservoir à sac intérieur
CN108861076A (zh) * 2017-05-16 2018-11-23 盖普拉斯特股份有限公司 具有内袋的容器
CN108861076B (zh) * 2017-05-16 2021-11-23 盖普拉斯特股份有限公司 具有内袋的容器

Also Published As

Publication number Publication date
PE20010947A1 (es) 2001-10-04
CO5280105A1 (es) 2003-05-30
DE19958577A1 (de) 2001-06-07
AR026679A1 (es) 2003-02-19
AU1705601A (en) 2001-06-12

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