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
  • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
  • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
  • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
  • B65D85/8043—Packages adapted to allow liquid to pass through the contents
  • B65D85/8055—Means for influencing the liquid flow inside the package

Definitions

• This invention relates to a labyrinth capsule containing a powder for the preparation of a beverage.
• Such capsules are mainly used for the machine preparation of coffee.
• such a capsule may also contain other powders, such as effervescent tablet powder, powders for the preparation of syrups or tea, etc.
• the task of the capsule is to temporarily store this powder and then to provide by the machine instant preparation for excellent beverage quality.
• hot or cold water is pressed with pressure through the capsule and formed by the same to a laminar as possible flowing and to avoid spattering to a not very fast flowing spout jet.
• the water should also be intimately mixed with the powder so that it is completely dissolved in the water flowing through.
• Conventional capsules consist of a deep-drawn small plastic cup, the bottom of which is, however, outwardly cambered and prepared in the center, to be pierced by a thorn, so that a round spout is formed.
• a labyrinth plate with serrated outer edge is inserted inside.
• this plate On the side of this plate, which is directed against the ground, this plate forms a labyrinth structure with central Mandrel to create the spout hole while having a plurality of piercing spikes on the upwardly directed side.
• On this plate is then inserted from above a sealing foil made of aluminum or plastic. The whole cup-like capsule is closed after filling with powder at the top with a sealing film.
• this sealing film is pierced and through the resulting hole is pressed at high pressure brewing liquid, usually hot water, into the capsule.
• the liquid penetrates the powder at high pressure. Due to the hydrostatic pressure, the sealing foil is pressed against the cup wall at its edge and continues to seal there. However, the piercing spikes penetrate the sealing foil on the inserted labyrinth plate.
• the liquid with the dissolved powder flows through the many holes formed in the sealing film. Below the sealing film, the liquid flows radially against the edge of the labyrinth plate and flows around its edge between the tooth gaps of the toothed edge. Thereafter, the liquid flows through the labyrinth on the plate to the spout hole, which has now been created by pressure of the labyrinth plate against the cup or Kasbelêt in its center. There, the liquid flows out and forms a jet.
• the liquid flows below the labyrinth along the bottom of the cup to the spout, and does not really flow through the labyrinth. It can then be achieved no intimate mixing by turbulence in the labyrinth. Accordingly, then the good solution of the powder is not guaranteed in the flowing liquid.
• the object of the present invention is therefore to provide a labyrinth capsule for beverage powder, which overcomes the above-mentioned disadvantages.
• a labyrinth capsule for beverage powder consisting of a cup-shaped capsule
• the capsule bottom is formed by a labyrinth plate, which has on its upper side a labyrinth structure and spikes, and in the center of a hole with central round pin, and on which labyrinth plate a sealing foil placed and welded along its edge with the edge of the labyrinth plate directly or indirectly, as well as with the webs of the labyrinth structure in the first half of the labyrinth plate is welded, the capsule enclosing the filling at its upper edge sealed with a closing foil is.
• Figure 1 The cup-like capsule without capsule bottom
• Figure 2 The cup-like capsule without capsule bottom, with sealed labyrinth plate
• Figure 3 The cup-like capsule without capsule bottom with sealed labyrinth plate and thereon welded sealing film
• Figure 4 The labyrinth plate seen from above in an enlarged view, with doublschweissender sealing film;
• Figure 5 The labyrinth plate with welded thereon sealing film shown in a cross section
• Figure 6 The cup-like capsule with labyrinth plate and sealing film shown in a cross section;
• FIG. 7 shows another variant for the design of the labyrinth plate
• FIG. 8 shows this labyrinth plate with sealing foil welded thereon in a cross section
• Figure 9 An alternative variant of the Verscheissung labyrinth plate with the sealing film.
• Figure 1 shows the first part of this total of four parts existing capsule for beverage powder, for example for coffee or an effervescent powder.
• This first component forms the conical wall 1 of a cup-like capsule, with cantilever edge 2 at the top and inwardly projecting edge 3 at the bottom.
• This component is made in most cases by deep-drawing of a laminate plastic with barrier function, which can ensure the required gas-tightness.
• a bead preferably runs as energy directors ERG for later welding of a sealing film on the upper edge 2 and a labyrinth plate on the lower edge 3. If no gas tightness, namely no absolute oxygen tightness for the filling material is required, so
• the cup can also be made together with the bottom as a one-piece molded part.
• the bottom forms in this case at the same time the labyrinth plate, as it becomes clear.
• the bottom which forms the labyrinth plate, at its edge has a shoulder for the welding of a sealing film, and this shoulder may be provided with a bead as energy directors ERG for the sealing film réelleschweissende.
• FIG 2 shows the capsule with the labyrinth plate 4 as a capsule bottom. Either it is - when the capsule wall 1 is deep drawn - to a separately produced molded part, which is then welded as a bottom in the capsule wall 1, and why the labyrinth plate 4 is welded to the downwardly inwardly projecting edge 3 of the capsule 1, or but in the other case, the labyrinth plate 4 is made in one piece with the capsule wall 1 as a molded part.
• the webs 5 are equipped with an additional, upstanding stinging dome 6.
• a sealing film 7 is welded onto the labyrinth plate 4, so that then presented the capsule as shown in Figure 3.
• the welding takes place along the peripheral edge 8 of the sealing film, and in addition to the dashed lines 9 points of the sealing film by the sealing film 7 is welded there to the underlying labyrinth webs 5.
• this has a spout 10, over which a basket 11 is formed, which spans the hole 10 and in the center of which a round pin 12 extends downwards through the hole 10.
• the liquid then flows through the basket 11 in the spout hole 10, and because in the center of a round pin 12 is, it is flowed around and at the outlet, the liquid jet can be a total taper and it therefore arises largely laminar liquid jet.
• the round pin 12 thus contributes to the formation of a laminar flow.
• the sealing film 7 is welded, along its outer edge region 8 on the outer edge of the labyrinth plate 4, which is provided for this purpose with a bead 15 as energy directors.
• the sealing film 7 is also welded to the inner, top planar labyrinth webs 5, which are arranged in concentric circles.
• the outer, concentrically arranged webs, however, are all equipped with an upstanding stinging dome 14.
• the labyrinth plate 4 sealing film 7 When welded on the labyrinth plate 4 sealing film 7, this initially remains intact. It itself consists of a laminate plastic, is oxygen-tight and seals together with the capsule wall 1, when this is deep drawn, the contents oxygen-tight. If the Kapseiwand 1 and the labyrinth plate 4, however, are sprayed, then the sealing film also need not necessarily be oxygen-tight, unless the injection-molded version is prepared so that in a co-injection process, a barrier layer is introduced into the center of the wall. In this case, the film must have the same barrier properties.
• Figure 5 shows the labyrinth plate 4 with the welded thereon sealing film 7 in a cross section.
• this plate can also be made flat on its underside.
• the labyrinth webs 5 are welded to the sealing foil 7 within the first half of the half of the labyrinth plate 4, while the outer webs do not touch the sealing foil 7.
• the sealing film 7 is also welded with its peripheral edge region 8 with the underlying edge of the labyrinth plate 4.
• the spout hole 10 In the center of the labyrinth plate 4 can be seen the spout hole 10, arranged above the spout hole, the spout hole 10 spanning basket 11, and the downwardly directed round pin 12, which ensures a largely laminar beam when flowing out of the liquid from the top of the labyrinth plate 4 ,
• the sealing foil 7 is perforated by the hydrostatic pressure of the liquid flowing from above into the capsule, the liquid flows through these perforation holes and afterwards against the radial one Towards the center of the labyrinth plate 4. Because the inner webs 5 are welded to the sealing film 7, the liquid must imperatively flow through the labyrinth formed by them and the resulting turbulence promotes the mixing of the liquid with the powder and the solution of the powder in the liquid.
• Figure 6 shows this capsule 1 for beverage powder in a cross section.
• the area above the sealing film 7 is completely dense, in the case of a thermoformed capsule wall made of laminate plastic and oxygen-tight sealing film 7 even oxygen-tight and thus especially suitable for sensitive to oxygen reactive fillers.
• the separately sprayed labyrinth plate 4 was inserted into the capsule wall 1 and welded to its lower edge. Thereafter, the sealing film 7 was inserted from above and welded to the peripheral edge and the inner labyrinth ridges 5 of the labyrinth plate 4.
• the sealing foil 7 is merely inserted and welded along its edge 8 to the labyrinth plate 4, as well as with its inner labyrinth webs 5.
• a closing foil can be, for example, an aluminum foil, which then closes the contents in an oxygen-tight manner, or else a simple plastic foil, if oxygen-tightness does not have to be guaranteed, or else a laminate-plastic foil of the same or similar material as that on the bottom Labyrinth plate 4 welded sealing foil 7.
• FIG 7 another variant for the design of the labyrinth plate 4 is shown. It has in the inner region of its radius labyrinth ridges 5, which have a special shape. Their side walls form namely concave indentations, so that perpendicular to the Labrinthplatte 4 standing Kännel are formed.
• the next inner labyrinth ridges 5 are also initially in plan rectangular blocks, which are also arranged with its longitudinal side along a concentric circle, but consistently between two outer, opposite labyrinth ridges of the outermost ring, so offset relative to the same with respect to the radial.
• These labyrinth ridges 5 of this next inward ring now form each with its outer as well as on its inner side a standing Kännel, so a concave indentation.
• the labyrinth ridges are arranged in each case between the labyrinth ridges of the preceding ring on the next inwardly following ring and on their outside they are concave.
• labyrinth ridges 5 Arranged in the outer half of the radius of the labyrinth plate 4 labyrinth ridges 5 are formed of arcuate elements 13 with vertically upwardly projecting spikes 14, wherein the arcuate elements 13 are arranged on concentric circles, so that the liquid must flow around them. However, these arcuate elements 13 are substantially lower than the other labyrinth ridges. 5
• Figure 8 shows this labyrinth plate 4 with welded thereon sealing film 7 shown in a cross section.
• the labyrinth plate 4 is here designed with a flat bottom 15.
• the labyrinth ridges 5 in the first half of the half of the labyrinth plate 4 are all the same height, so that the sealing film 7 is welded onto the same runs flat.
• the sealing film 7 drops down in the radial direction and is welded with its edge 8 here with the upper side of the lower edge 3 of the cup 1. Between the piercing thorns 14 and the underside of the sealing film 7 a small gap remains free.
• Figure 9 shows an alternative variant for the welding of the labyrinth plate 4 with the sealing film 7.
• the underside of the outer edge 8 of the sealing film 7 welded directly to the top of the outer edge of the labyrinth plate 4.
• This offers the advantage that the slightly varying thicknesses of the lower, inwardly projecting edge 3 of the cup 1 can no longer play a role. Namely, this lower edge 3 of the cup 1 is then welded onto the upper side of the edge of the sealing film 7 as shown here.
• this projecting edge 3 between the sealing film 7 and labyrinth plate 4 is welded so causes its by deep drawing process manufacturing slightly varying edge strength that the distance between the sealing film 7 and the piercing spikes 14 is not the same everywhere and a defintive distance can not be met accurately can. Therefore, a reliable piercing over the entire circumference is not ensured in this welding of the cup rim 3. With the welding shown here, however, can be remedied, because so the distances between the sealing film 7 and piercing spikes 14 are well defined and consistent.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Apparatus For Making Beverages (AREA)
• Closures For Containers (AREA)
• Manufacturing Of Micro-Capsules (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=42729443

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (47)

Family Cites Families (7)

• 2008
  • 2008-02-06 EP EP08709807A patent/EP2238050B1/fr not_active Not-in-force
  • 2008-02-06 CN CN2008801262517A patent/CN102036885B/zh not_active Expired - Fee Related
  • 2008-02-06 DE DE502008003326T patent/DE502008003326D1/de active Active
  • 2008-02-06 WO PCT/IB2008/000321 patent/WO2008087553A1/fr active Application Filing
  • 2008-02-06 US US12/812,807 patent/US8499682B2/en active Active
  • 2008-02-06 AT AT08709807T patent/ATE506292T1/de active

Non-Patent Citations (1)

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