EP3837184A1 - Verschlusskappe für behälter mit lichtempfindlichem inhalt - Google Patents
Verschlusskappe für behälter mit lichtempfindlichem inhaltInfo
- Publication number
- EP3837184A1 EP3837184A1 EP19753048.8A EP19753048A EP3837184A1 EP 3837184 A1 EP3837184 A1 EP 3837184A1 EP 19753048 A EP19753048 A EP 19753048A EP 3837184 A1 EP3837184 A1 EP 3837184A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- cap according
- closure
- head plate
- opaque
- 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.)
- Withdrawn
Links
- 229920003023 plastic Polymers 0.000 claims abstract description 34
- 239000004033 plastic Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 21
- 239000000049 pigment Substances 0.000 claims description 18
- 229920001903 high density polyethylene Polymers 0.000 claims description 6
- 239000004700 high-density polyethylene Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 29
- 238000007789 sealing Methods 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
- B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
- B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
- B65D41/045—Discs
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/46—Snap-on caps or cap-like covers
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
-
- 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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/30—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants by excluding light or other outside radiation
Definitions
- the present invention relates to a closure cap made of plastic for an opening of a liquid container, the closure cap having devices for positive connection to the opening or an edge or container neck surrounding the opening, and a head plate which covers the opening in use.
- containers made of an opaque material are used and otherwise partially transparent plastic containers are either colored or coated accordingly, so that no light can penetrate into the interior of the container through the wall of the container.
- plastics that are used for container closures such as HDPE (high-density polyethylene) and PP (polypropylene), are transparent at least in certain wavelength ranges of visible light, at least to a sufficient extent, in order to contain light-sensitive liquids in otherwise opaque containers under unfavorable external conditions to affect. This is all the more true since, in the course of conditions and conditions for the use of plastic materials in general and plastic closures in particular, there is a tendency to produce closures that are ever thinner and lighter without, however, impairing their sealing and sealing function.
- HDPE high-density polyethylene
- PP polypropylene
- closure caps made of colored plastics are often expressly desired by the manufacturers or fillers of the liquid, for example in order to generate a corresponding branding or, for example, to differentiate different variants of the filled products or liquids based on the closure colors.
- the present invention has for its object to provide a cap of the type mentioned, which does not have the disadvantages mentioned above.
- the top plate of the closure has at least one layer which is impermeable to light in the visible frequency range.
- the cap can keep their otherwise customary color design without further ado and the color design can also be varied as desired without the opacity of the top plate overall is impaired, since the opaque layer does not have to be visible to the outside.
- covers for container openings consist of aluminum or a metallized plastic film
- cover layers either being applied directly through a weak adhesive layer on the edge of a container opening or inserted in the form of sealing or cover disks into the interior of a closure cap are.
- such a configuration requires additional and expensive measures for applying or inserting these additional layers, which are in principle separated from the closure cap, which is avoided by the present invention, since the opaque sheikh is firmly connected to the head plate and preferably also to the head plate or the whole Cap is injection molded in one piece.
- the layer consists of the same base material as the rest of the top plate and is filled with an opaque material, in particular colored with an opaque pigment.
- gray pigment which can be mixed and bonded well with the plastics (HDPE and PP) commonly used for plastic closures, essentially has a sufficient density of, for example, three percent by volume and a sufficient thickness of the layer in the visible frequency range Light is opaque.
- the thickness of the opaque layer can be, for example, between 0.1 and 0.5 mm.
- the layer can contain, for example, between 0.5 and 5% by volume, preferably between 1 and 3% by volume, of gray pigments.
- the volume fraction of the pigments must take into account, on the one hand, the ability of the pigments to wet the plastic material and, on the other hand, the adhesiveness or connectivity of the plastic containing the pigments to or with the other closure material.
- the surface density of the pigments in the layer measured perpendicular to the surface of the layer or the top plate should be between 0.005 and 0.05 g / cm 2 , preferably between 0.01 and 0.03 g / cm 2 , this surface density for a given volume fraction of the pigments is again proportional to the thickness of the opaque layer.
- materials that adhere well to the plastic material of the rest of the closure are expedient.
- Identical or similar plastic material fulfills this condition and also facilitates the recycling of used closures or waste.
- the closure cap entirely from plastic colored with gray pigment, but the gray color is generally considered to be extremely unattractive and the manufacturer and filler of corresponding liquids, especially when it comes to liquids for end users, such as Milk, for example, are generally not prepared to attach such gray plastic closures to their containers, because customers also consider them to be unattractive and unsightly.
- this layer can be arranged in an area of the closure cap that is not visible from the outside, such as on the inner surface of the head plate or in an intermediate layer of the head plate, which is covered on both sides by a different colored, not completely opaque plastic material.
- the closure cap can be designed differently and, in one embodiment, is a screw cap with an internal thread.
- the closure cap can be a so-called snap lid, which is attached to a container neck, for example, via a retaining ring and can be moved relative to the retaining ring via a hinge.
- the snap cover has at least one axial projection or jacket section on its outer edge, which extends at least over part of the circumference of the snap cover and which additionally has a radially inward projection in order to have a corresponding outwardly facing wall projection on a container neck, ( To snap behind).
- a snap lid is held on a retaining ring which engages around a container neck, the actual closure cap or the snap lid being movable relative to the retaining ring via a hinge and being folded up from the opening of the container neck can be.
- a radially inwardly projecting projection engages behind an axially extending jacket portion of the snap lid on a correspondingly bulging snap edge on the container neck, and an inner seal, which extends downward from the inner surface of the snap lid in the direction of the container opening, is dimensioned such that when the cap is closed, it engages with the inner surface of a container neck or with its upper edge and seals the inside of the container from the outside.
- the projection provided on a cap jacket, like the cap jacket as a whole, does not have to extend over the full extent of such a snap lock, but can in particular be recessed in the area of the hinge connection to the retaining ring.
- the head plate can each have a more or less perpendicular to the head plate extending inner seal, which can come into sealing engagement with the inner surface of a container neck.
- an outer seal is also provided, which also extends inward away from the head plate and can come into sealing engagement with the outside of a container neck.
- the cap is preferably made of high density polyethylene (HDPE), including the opaque layer.
- HDPE high density polyethylene
- PP polypropylene
- the opaque layer has a volume fraction of 1-3% gray pigments and in this case is between 0.2 and 0.6 mm thick, for example.
- the surface density of the pigments in the layer should be between 0.005 and 0.05 g / cm 2 , in particular 0.01-0.03 g / cm 2 .
- FIG. 1 shows a sectional view containing the axis of a closure and two perspective views of a screw cap according to a first embodiment of the invention
- Figure 2 is a view corresponding to Figure 1 and two perspective views of a second embodiment of a screw cap
- Figure 3 shows a further variant of a screw cap according to the present inven tion in a sectional view and in two perspective views. All three figures each show a screw cap in three different views, the essential features being best seen in the respective sectional view
- FIG. 1 a closure 10 in the form of a screw cap, which is shown, inter alia, in a section containing the axis and which has a head plate 1 and a cap jacket 2 with an internal thread 3.
- a closure 10 in the form of a screw cap, which is shown, inter alia, in a section containing the axis and which has a head plate 1 and a cap jacket 2 with an internal thread 3.
- From the head plate 1 extends approximately perpendicular to the head plate 1, an inner seal 4, which is intended to engage in the interior of a (not shown) container neck.
- an opaque layer 5 which is preferably made in one piece with the head plate 1 by injection and preferably consists of the same plastic material as the head plate 1, but is colored with gray pigment.
- FIG. 1-3 some flat elevations on the inside of the head plate 1 be distinguished, which serve to effectively enlarge the adhesive surface and are intended to improve the hold of the sprayed layer 5 on the inner surface of the head plate 1.
- the shape of these elevations is largely arbitrary and can be ring-shaped or star-shaped, for example.
- One possible way of producing such a closure or such a screw cap 10 would be to push a stamp of the corresponding injection mold inside the inner seal 4 to such an extent that the space available as the injection molding cavity is available for the closure cap 10 without the layer 5 is required, whereby after the injection of the plastic and before the hardening of the plastic material, the stamp in question is pulled back a little in order to free up the space to be filled in by the layer 5, into which the plastic material filled with gray pigment is then injected integrally connects with the rest of the plastic material.
- the plastics could be injected simultaneously from two different positions in the mold, in particular if the opaque layer of the top plate is to run on both sides covered by a differently colored plastic material in the interior of the top plate.
- the simplest manufacturing technique is, however, to spray an additional layer on the inside of the head plate and, if necessary, on the inside seal, even before the closure is ejected from the mold.
- the inner seal 4 forms only a very narrow, annular and partially transparent section corresponding to the thickness of the inner seal 4, and the layer thickness through which light would have to pass corresponds to the axial height or length of the inner seal 4, so that the arrangement shown here 1 is generally sufficient to meet the conditions imposed on an opaque screw cap.
- FIG. 3 One possibility of reducing the incidence of light, albeit very little, by means of a transparent gap effectively formed by the inner seal 4 itself is shown in FIG. 3 and consists in also the inner seal 4 itself on the inside with the corresponding opaque light To provide layer 5 '.
- the inner seal 4 in the case of FIGS. 2 and 3 is also significantly longer and thicker than the inner seal 4 in FIG. 1.
- FIG. 2 one can see on the inside of the inner seal 4 a plurality of ribs 9 which are distributed uniformly over the circumference and extend axially and which on the one hand influence the elastic radial restoring force of the inner seal but on the other hand offer a coating 5 'a better hold.
- the corresponding ribs 9 can also be present on the inner surface of the inner seal 4 according to FIG. 3, but would be covered there by the coating 5 '.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018119814.0A DE102018119814A1 (de) | 2018-08-15 | 2018-08-15 | Verschlusskappe für Behälter mit lichtempfindlichem Inhalt |
PCT/EP2019/071486 WO2020035420A1 (de) | 2018-08-15 | 2019-08-09 | Verschlusskappe für behälter mit lichtempfindlichem inhalt |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3837184A1 true EP3837184A1 (de) | 2021-06-23 |
Family
ID=67620461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19753048.8A Withdrawn EP3837184A1 (de) | 2018-08-15 | 2019-08-09 | Verschlusskappe für behälter mit lichtempfindlichem inhalt |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3837184A1 (de) |
CN (1) | CN112533840A (de) |
BR (1) | BR112020027075A2 (de) |
DE (1) | DE102018119814A1 (de) |
WO (1) | WO2020035420A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1719212A (en) * | 1926-12-28 | 1929-07-02 | Francis W Chausse | Closure for milk bottles |
CH171667A (de) * | 1933-10-16 | 1934-09-15 | Benetti Carlos | Verschlusskappe für Flaschen. |
FR2128995A5 (de) * | 1971-03-10 | 1972-10-27 | Lang Laszlo | |
DE8305022U1 (de) * | 1983-02-23 | 1983-08-11 | Max Hübner GmbH & Co, 8950 Kaufbeuren | Behaelterverschluss |
GB8604881D0 (en) * | 1986-02-27 | 1986-04-03 | Grace W R & Co | Container caps |
FR2631933B1 (fr) * | 1988-05-30 | 1991-02-08 | Astra Plastique | Dispositif de bouchage hermetique |
FR2796526B1 (fr) * | 1999-07-23 | 2002-03-08 | Oreal | Piece dont la face arriere est recouverte par un revetement permettant la creation d'un effet de lumiere lorsque sa face avant est observee |
BR0101511A (pt) * | 2001-04-18 | 2003-01-14 | Alcoa Aluminio Sa | Tampa para fechamento de recipentes |
PL3089926T3 (pl) * | 2013-12-31 | 2018-05-30 | Société Anonyme Des Eaux Minérales D'evian Et En Abrégé "S.A.E.M.E" | Nakrętka do zamykania zakończenia szyjki pojemnika i sposób wytwarzania wymienionej nakrętki |
BR112016020700B1 (pt) * | 2014-04-23 | 2021-07-06 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | método e aparelho para a obtenção de um objeto, e objeto tendo corpo em formato de copo |
-
2018
- 2018-08-15 DE DE102018119814.0A patent/DE102018119814A1/de not_active Withdrawn
-
2019
- 2019-08-09 CN CN201980052052.4A patent/CN112533840A/zh not_active Withdrawn
- 2019-08-09 WO PCT/EP2019/071486 patent/WO2020035420A1/de unknown
- 2019-08-09 EP EP19753048.8A patent/EP3837184A1/de not_active Withdrawn
- 2019-08-09 BR BR112020027075-0A patent/BR112020027075A2/pt unknown
Also Published As
Publication number | Publication date |
---|---|
CN112533840A (zh) | 2021-03-19 |
DE102018119814A1 (de) | 2020-02-20 |
WO2020035420A1 (de) | 2020-02-20 |
BR112020027075A2 (pt) | 2021-03-30 |
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