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

Definitions

• the invention relates to a capsule according to the preamble of claim 1.
• Such capsules are today used in various forms for the preparation of a beverage, in particular of coffee or tea in a beverage preparation machine.
• the capsules fulfill a dual function, on the one hand, by the substance contained therein from the outside
• the capsule is received in a brewing chamber, which for the brewing process
• Beverage preparation machines takes place with the closure of the brewing chamber, a penetration of the soil, which hot water can penetrate into the interior of the capsule after pressing the pump.
• the lid, which closes the capsule body is either perforated or he breaks through the structure of the
• Material elasticity of the soil close to the perforating means applies, so that the penetrating amount of water per unit time is lower than, for example, with capsules made of aluminum. It has therefore been shown that it is particularly advantageous to install additional openings in the bottom already during the production of the capsule, which measures the flow rate in the bottom Increase beverage preparation machine. These openings are advantageously produced without material removal slots, which are closed in the pressureless state and take over a kind of valve function under pressure.
• Oxygen and aroma-tight design of the capsule apart from the openings in the ground is easily implemented. It is therefore an object of the invention to provide a capsule of the type mentioned, which manages without additional outer shell and in which the flow rate in the
• Beverage preparation machine is controllable through any openings in the bottom of the capsule. This object is achieved according to the invention with a capsule, which has the features in claim 1.
• the capsule body is itself already provided in a known per se with a barrier layer. Multi-layered construction
• Plastic films with such a barrier layer are already known. Also cover with barrier properties are known. In order to prevent moisture or atmospheric oxygen from penetrating the capsule bottom through the production-side openings or aroma material can escape, is on
• the membrane can be connected to the ground along a connection zone following the circumference of the floor. In this way, all are already installed in the ground
• connection zone is chosen so that a sufficiently firm connection with the ground is ensured. It may be particularly useful if the
• This disconnected area can serve
• Bumps such as e.g. To compensate for wrinkles or indents in the membrane.
• the openings are arranged at least partially in the central region of the capsule bottom, where the membrane is not connected to the ground. In this way, the liquid penetrating through the openings in the unconnected
• the capsule may be rotationally symmetrical, wherein the connection zone may be annular.
• connection zone has an outer diameter between 14 and 17 mm and a
• Masses on the one hand ensures a secure connection between the membrane and capsule bottom and on the other hand remains one sufficiently large central area at which the membrane is not connected to the ground.
• carrier properties is well-known to those skilled in the food packaging industry, the essential criteria being oxygen permeability and oxygen permeability
• Plastic material having excellent barrier properties is known, for example, as polyethylene vinyl alcohol (EVOH). This material is used in laminated films as a barrier layer and has permeability values in the range of 0.01 to 1.
• the oxygen permeability of plastic films is measured according to DIN 53 380. The value for the oxygen permeability results from cm 3 / m 2 xdx bar. For the present application permeability rates apply, as they already deep-drawn
• Plastic capsules are used for portion coffee.
• the membrane is connected over its entire surface to the bottom of the capsule.
• the openings can bring about a better flow rate even in such a case. This is particularly the case when the penetration means pierces the bottom of the capsule in the region of the slots.
• the opening is advantageously closed in the unpressurized state
• Slit may be straight or curved, or it may also be crossed slots.
• Embodiments of slit valves that are under Open pressure the skilled person already known from various fields of technology.
• a particularly optimal effect is achieved when several openings, preferably at least three openings are placed in the bottom. This is related to that in the
• the relative position of the capsule to the penetration means is not always predictable. With at least three openings, however, the risk of an unfavorable relative position is considerably reduced.
• the floor adjacent to the outer periphery of a stiffening zone which is formed by a plurality of indentations.
• the bottom for the passage of the liquid through the chamber in a beverage preparation machine with a penetrating agent is penetratable without the capsule body bends.
• a sufficient resistance to the capsule bottom is in capsule bodies made of plastic material of special
• this material of the penetration sets a greater resistance to, for example, aluminum.
• the membrane may consist of an aluminum-based film. It can also be a slide of one
• Aluminum alloy or a laminate with at least one aluminum layer act. From the same film material and the lid can be made to close the capsule body. Aluminum is known to have excellent properties in terms of barrier to diffusion. For this reason, such films are often used for aroma-tight packaging in the food industry.
• the capsule body is particularly suitably designed as a deep-drawn part.
• the deep drawing process can multilayer
• Plastic films are processed, which are exactly on the
• Form capsule body for example, as an injection molded part.
• the invention also relates to a method for producing a capsule body for a capsule, which has the features in claim 13. It has proved to be particularly advantageous
• the openings are placed in the bottom of the capsule in a separate operation after the production of the capsule body. In this way, the openings can be positioned exactly, which is particularly important for the desired effect.
• the membrane is used, whose surface configuration corresponds approximately to that of the bottom of the capsule.
• the connection takes place along a connection zone following the circumference of the floor or over the whole area.
• An optimization of the manufacturing process can be further achieved in that the capsule body in a
• the soil preferably is formed as a flat surface.
• the openings are easier to install than when it is curved.
• the membrane can also be on a flat surface
• the opening is formed without material removal by an incision such that a self-closing slit in the rest state.
• the soil is preferably pierced with a sharp blade.
• the openings could also be punched or burned out, for example by means of laser beams.
• connection of the membrane to the bottom is advantageously carried out by heat sealing, wherein the membrane with a
• correspondingly sealable layer e.g. can be equipped with a sealing wax.
• connection methods such as e.g. gluing or welding or a purely mechanical pressing.
• the invention also relates to a system comprising a capsule filled with a substance as above
• a beverage preparation machine which has a capsule holder for receiving the capsule, and a device for passing a liquid through the capsule for extracting or dissolving the substance for producing a beverage, wherein the beverage preparation machine has at least one device for penetrating the bottom of the capsule.
• FIG. 1 shows a perspective view of a capsule
• FIG. 2 shows a plan view of the capsule according to FIG. 1,
• Figure 3 is a plan view of the empty capsule body
• FIG. 4 shows a cross section through the capsule body according to FIG.
• FIG. 5 shows a cross section through the capsule body according to FIG.
• FIG. 7 shows a schematic representation of the production of a capsule body
• Figure 8 is a plan view of an alternative
• Figure 9 is a plan view of another
• a capsule 1 known per se consists of a substantially rotationally symmetrical capsule body 2 with a side wall 3 and a bottom 4.
• the capsule body 2 has the overall shape of a stepped truncated cone, the last truncated cone portion 17 being the steepest
• the bottom 4 is substantially flat, but may be off
• Stiffening zone 13 which is formed by individual indentations 14. These indentations interrupt the
• openings 8 are arranged in the form of slots in the bottom, which openings completely penetrate the bottom, but are closed in the state of rest due to the material elasticity.
• Embodiment four slots are arranged in an angular pitch of 90 °.
• Clarity an empty capsule body 2 in the state before filling with a substance and before closing the
• Capsule opening with the lid 5 As can be seen from Figure 3, the capsule bottom is covered on the inside with a membrane 9. With a broken circle while the connection zone 10 is indicated, on which the membrane is firmly connected to the ground. This connection zone follows the circumference of the floor and is formed here annular.
• FIG. 4 shows still further details of the stiffening zone 13 or of the individual indentations 14.
• Each indentation is provided with an inner wall section 15, which runs in cross section approximately parallel to the longitudinal central axis of the capsule.
• the inner wall sections 15 lie on a common
• Peripheral circle which corresponds approximately to the outer diameter of the membrane 9.
• Each indentation 14 also has two side wall portions 16, the distance of which widens slightly against the bottom 4 here. This way, against one
• Figure 6 shows a simplified representation of the situation after the penetration of the capsule base 4 by a
• the membrane 9 is fixed to an annular connection zone 10 connected to the capsule bottom 4.
• This membrane consists of an aroma-tight film with barrier properties such as aluminum.
• the capsule body 2 made of plastic material has such an aroma-tight barrier layer, which is not specified in the drawings.
• the connection zone 10 has an outer diameter dl, which at the same time about the
• Outer diameter of the membrane 9 corresponds. However, the membrane 9 may also partially overlap the side wall 3 of the capsule.
• the inner diameter d2 of the connection zone 10 encloses a central region 11, at which the membrane 9 is not firmly connected to the capsule bottom 4.
• Penetrant 12 penetrates the capsule bottom 4 and the membrane 9 within or optionally outside of the central region 11.
• opening 8 which may be a closed slit at rest
• hot brewing water flows into the area between the capsule bottom 4 and membrane. 9 and thence through the opening in the membrane 9, which was created by the penetration means 12.
• brewing water also penetrates through the opening in the bottom 4, which was likewise created by the penetration means 12.
• the chamber 6 formed by the capsule evidently remains hermetically sealed against the outside atmosphere.
• FIG. 7 shows in individual sequences the production of a capsule body for a capsule according to the invention.
• a capsule body 2 is produced in a deep-drawing die 20.
• the production technology and the materials are known to the person skilled in the art. For example, a multi-layered film based on polypropylene and polyethylene
• the finished capsule body 2 is provided according to b using a plunge tool 21 with the openings at the bottom.
• a membrane 9 is provided and placed on the inside of the capsule body on the ground.
• the capsule body 2 is closed with a lid 5 with the aid of a closing tool 24.
• steps e and f can take place at a great distance from step d.
• the prepared capsule body 2 can be stacked, for example, after operation d and stored until they are fed to the filling station.
• the openings 8 consist of a total of eight circular holes which penetrate the bottom 4.
• the capsule according to FIG. 9 differs from that according to FIG. 2 in that the four slots 8 serving as openings are arranged relatively far outside almost in the region of the indentations 14. In such an arrangement, the openings are in the region of the connection zone, that is in the Area in which the membrane 9 is firmly connected to the bottom 4 of the capsule. This is independent of whether the membrane is only connected to an annular connection zone or over the entire surface to the ground.
• Figure 10 shows an embodiment in which the membrane 9 is connected over the entire surface with the bottom 4.
• the slot-shaped openings 8 also extend far outward here, as shown in FIG.
• the penetration means 12 and 12 'penetrate the bottom 4 in the outer peripheral region of the bottom 4.
• penetration means 12 pierces the soil in a region in which no opening is arranged. At this point, there is no increase in the flow rate.
• the penetration means 12 ' pierces the bottom 4 in a region in which an opening 8 is arranged.
• the slot 8 causes an increased flow rate, which is caused on the one hand by the enlarged opening cross-section and on the other hand by a reduction in the resilience of the bottom wall.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Apparatus For Making Beverages (AREA)
• Packages (AREA)
• Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Priority Applications (8)

Applications Claiming Priority (1)

Publications (1)

Family

ID=48628668

Family Applications (1)

Country Status (8)

Cited By (13)

Citations (5)

Family Cites Families (13)

• 2013
  • 2013-06-17 JP JP2016520290A patent/JP2016529942A/ja active Pending
  • 2013-06-17 WO PCT/EP2013/062462 patent/WO2014202105A1/de active Application Filing
  • 2013-06-17 PT PT137293312T patent/PT3010838T/pt unknown
  • 2013-06-17 EP EP13729331.2A patent/EP3010838B2/de active Active
  • 2013-06-17 BR BR112015031232-2A patent/BR112015031232B1/pt active IP Right Grant
  • 2013-06-17 DK DK13729331.2T patent/DK3010838T4/da active
  • 2013-06-17 ES ES13729331T patent/ES2634334T5/es active Active
  • 2013-06-17 AU AU2013392999A patent/AU2013392999B2/en active Active

Patent Citations (5)

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