EP3456656A1 - Sac de distribution - Google Patents

Sac de distribution Download PDF

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Publication number
EP3456656A1
EP3456656A1 EP17191042.5A EP17191042A EP3456656A1 EP 3456656 A1 EP3456656 A1 EP 3456656A1 EP 17191042 A EP17191042 A EP 17191042A EP 3456656 A1 EP3456656 A1 EP 3456656A1
Authority
EP
European Patent Office
Prior art keywords
membrane
wall
dispensing bag
anyone
product
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Withdrawn
Application number
EP17191042.5A
Other languages
German (de)
English (en)
Inventor
Marco Koekkoek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever NV
Original Assignee
Unilever NV
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 Unilever NV filed Critical Unilever NV
Priority to EP17191042.5A priority Critical patent/EP3456656A1/fr
Publication of EP3456656A1 publication Critical patent/EP3456656A1/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a dispensing bag.
  • the invention further relates to a method for emptying the dispensing bag.
  • ice cream or sauces such as dressings like mayonnaise, ketchup or mustard, that are sold via a vending machine.
  • a personal care product like e.g. liquid or pasty soap or skin cream could be dispensed with such a machine.
  • the product is dispensed from the machine in an amount suitable for use or desired for consumption.
  • the product to be dispensed is stored, e.g. in the dispensing apparatus, in a relatively large volume. Storage can for example be facilitated via a storage bag or storage container which contains the product to be dispensed, e.g. in a bag-in-box arrangement.
  • DE19513223 discloses a dual-container dispensing bag. It comprises a container for viscous product with two openings, an outer bag and an inner bag comprising the product to be dispensed.
  • a problem that maintains here is that much of the product to be dispensed from the inner bag, especially a more viscous product, remains in the bag. Especially in food industry where many restaurants use this dispensing bag, the total amount of product discarded adds up to significant amounts and costs.
  • the invention relates to a dispensing bag, comprising a first outer wall (1), a second outer wall (2) and a membrane (3), adjacently oriented, wherein
  • the dispensing bag is characterised in that the surface of the membrane (3) facing the first outer wall is releasably attached to the first outer wall.
  • the invention relates to a dispensing apparatus comprising a dispensing bag according to the invention.
  • the invention relates to a method for emptying a dispensing bag according to the invention, the method comprising the steps of:
  • the invention relates to a dispensing bag. Consequently, no rigid (non-flexible) outer container is present, as the outer walls are flexible in the present invention.
  • the flexible material of the outer walls (1,2) and membrane (3) of the dispensing bag provides for optimal emptying. During the emptying process, the membrane releases from the first outer wall (1) and aligns to the inside of the second outer wall (2), thereby pushing the product out of the first compartment.
  • the material for the outer walls (1,2) is known in the art, it can preferably be a laminate.
  • the outer wall comprises plastic, preferably with a barrier, e.g. to keep oxygen out.
  • a preferred barrier is EVOH (ethylene vinyl alcohol), but aluminium, or other metal layer, or SiOx can be used as barrier.
  • the plastic can preferably comprise polyolefine like preferably polyethylene or polypropylene.
  • the plastic may further comprise low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • the material can further comprise polyamide (e.g. Nylon) to provide a strength to the bag. Combinations of these materials are preferred, such as most preferably a LDPE/PA/EVOH/PE material.
  • the outer walls are flexible. They are preferably not elastic.
  • the membrane (3) is situated between the outer walls. It preferably comprises plastic. It preferably comprises one or more of the materials polyolefine like preferably polyethylene or polypropylene.
  • the plastic may further comprise low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • a preferred barrier is EVOH (ethylene vinyl alcohol), but aluminium, or other metal layer, or SiOx can be used as barrier.
  • a strengthening layer is less relevant as it is for the outer walls, such a layer can be present, e.g. comprising polyamide.
  • the membrane is flexible. It is preferably not elastic. The flexibility of the membrane is preferably higher than that of the outer walls, which allows the membrane to push more efficiently to the inner side of the second outer wall during the process of emptying the compartment comprising the product.
  • the constellation of the present dispensing bag provides for efficient dispensing of product wherein preferably the amount of product that is left behind in the bag is preferably minimal and preferably reduced compared to existing dispensing bags without the membrane-mediated emptying mechanism.
  • the pressure caused by the gas, such as air or CO 2 entering the first compartment (4) between the first outer wall and the membrane releases the membrane from the first outer wall in a progressive manner, starting from the area where the gas enters the first compartment (4).
  • gas enters the first compartment , thereby creating and/or enlarging the first compartment, the membrane is progressively released and pushed towards the inner side of the second outer wall (2), generating the force that pushes out the product from the second compartment (5) between the membrane and second outer wall (2).
  • the force required to push out the product is less than the force required to release the membrane from the first outer wall. In this manner, the release of the membrane proceeds in an optimal way, following the level of product in the second compartment, reducing the risk of leaving product behind.
  • the gas preferably enters the dispensing bag at a side opposite to the side where the product leaves the bag.
  • the gas inlet (6) to the first compartment is located at one end, the first end, (8) of the dispensing bag, and the outlet from the second compartment is located at the opposite end (9), the second end.
  • the first end is normally referred to as the top side and the second end as the bottom side, reflecting the direction of flow of the product from top to bottom when used in a dispensing machine.
  • the shape of the dispensing bag is preferably longitudinal, or triangular, for an optimal emptying process. Most preferred is longitudinal. For example, when the bag is triangular, preferably the first end (8) is the base of the triangle and the second end (9) is the apex.
  • the top side, or first end (8) is preferably understood as the 25% of the length (longest dimension) near the ending of the first outer wall.
  • the bottom end, or second end (9), is preferably understood as the 25% of the length (longest dimension) near the ending of the second outer wall, opposite to the first end.
  • the dispensing bag preferably has a volume of from 0.5 to 10 dm 3 , preferably of between 1 and 7 dm 3 , even more preferably of between 2.5 and 6 dm 3 . This volume refers to the maximum volume contained between the membrane and the second outer wall.
  • the shape of the dispensing bag is preferably rectangular when empty.
  • the dispensing bag is preferably composed of three adjacently arranged sheets of foil. These sheets are preferably sealed together at their peripheries, having an outer seal (10), in this manner providing two compartments. The sheet in the middle, the membrane, is aligned to the first outer wall and releasable connected to it.
  • the releasable connection preferably comprises sealing, to create a non-permanent seal (11).
  • non-permanent sealing is a technique well-known to the skilled person and may involves heat sealing, ultrasonic or induction sealing, wherein heat sealing is preferred.
  • heat sealing is preferred.
  • the layers comprise a metal, like aluminium
  • ultrasonic or induction sealing may be preferred to create the non-permanent sealing.
  • the sealing can be in the form of a sealing pattern of lines.
  • the non-permanent sealing is preferably not over the entire surface. By applying more sealing lines, the force to separate the membrane from the first outer wall becomes higher. It is in the skill of the artisan to apply the seals, taking into account parameters such as the pressure applied during sealing, sealing time and sealing temperature and the materials to be sealed.
  • PE has a relatively low melting temperature, and will need a relatively small amount of energy during sealing, for example 160-180 °C during 1-4, preferably 2-3 seconds.
  • PE can therefore be preferred as material in the membrane and/or outer wall.
  • PP might need a slightly higher temperature. The skilled person will understand that the higher the temperature, the shorter the sealing time, to create non-permanent seals.
  • the seals are preferably applied in lines, in the direction of the length of the bag, for optimal control of the release of the membrane during emptying of the bag.
  • connection of the membrane to the first outer wall can be in the form of connecting areas, like lines, or over the surface, and is preferably over its surface, preferably over its entire surface.
  • the membrane is preferably attached by a releasable adhesive, as known in the art.
  • Non-permanent seals are preferred over adhesive-mediated adherence. This is because the quality of the seals is more stable over storage time, and therefore a more predictable release behaviour is obtained.
  • the bag comprises product to be dispensed.
  • the product is present in the second compartment (5) between the membrane and the second outer wall.
  • the product is preferably liquid or pasty.
  • the dispensing bag of the present invention is especially suitable for products that are in the form of a viscous liquid or in the form of a paste. Such products are more prone to stay behind in a dispensing bag than runny liquids.
  • the product is preferably a food product, preferably a sauce, such as mayonnaise, ketchup or mustard; or an ice cream.
  • the product can be a personal care product, such as a liquid soap or a skin cream.
  • the viscosities are preferably in a preferred range, normal for these products. Such viscosities are preferably measured with a Brookfield measurement, according to the following protocol:
  • the yield stress at -20 °C is preferably of between 4000 Pa and 8500 Pa, preferably of between 5000 Pa and 6500 Pa.
  • the rheology of the ice cream is measured as follows:
  • the rheometer consists of a temperature controlled sample holder and a hood to cover the sample. Cold air is blown onto the sample, via the hood, to prevent condensation and frost formation.
  • a vane 10-4V-8.8/116 geometry is used, which is a 4-blade vane with a diameter of 8.8 mm, a height of 10 mm and a shaft length of 116 mm.
  • the vane was lowered to the measurement position to equilibrate the vane, sample holder and hood to the test temperature - either -14, -16, -18, -20, or - 22 °C.
  • the measurement position was set at 10 mm.
  • a rheology cup containing the sample was inserted into the sample holder and the hood was lowered until it touched the base.
  • the wall of the rheology cup was serrated to prevent wall slip.
  • the vane was then further lowered into the measurement position at a very slow speed of 100 ⁇ m per second to not damage the structure of the sample too much.
  • the sample Before the measurement commenced, the sample is equilibrated for 20 minutes to allow for internal structure recovery and final equilibration to the test temperature.
  • An oscillatory amplitude sweep test is performed on the sample, controlled by Rheoplus software. A strain range of 0.001% to 100% is imposed with 10 points per decade on a log scale at a frequency of 10 Hz. The measurement point duration is fixed at 20 s. All measurements are performed in triplicate with a new sample being used for every measurement.
  • the yield stress is obtained from the data, as this is an indicator for the flowability of the ice cream.
  • the yield stress is determined by finding the highest value of the elastic stress before the cross-over point between the elastic stress and the viscous stress.
  • Elastic Stress is calculated by multiplying the storage (elastic) modulus by the strain and viscous Stress is calculated by multiplying the loss (viscous) modulus by the strain
  • the product in the bag is a personal care product
  • the following viscosities are normal in the art and preferably apply in the present in invention: 500 to 10000 mPa-s, preferably 1000 to 5000 mPa-s, more preferably 1500 to 4000 mPa-s.
  • the average for lotions is ⁇ 2000 mPa-s, but can range from 300 (which would be like water) to 4000 mPa-s, which would actually be like a soft creme. Hence, more preferred is 1000 to 4000.
  • the average for creams is ⁇ 4000 mPa-s, but could go from 2000 mPa-s up to 10,000 mPa-s.
  • the values are measured in the following manner: The measurement is viscosity at a shear rate of 100s -1 , measured on an ARES rheometer using 25 mm parallel plates at ambient temperature (23°C). This is a device-independent measurement. It can be done on any rheometer with parallel plates (but not on an “indexer” such as a Brookfield).
  • the invention relates to a dispensing apparatus comprising a dispensing bag according to the invention.
  • a dispensing apparatus is preferably a dispensing apparatus for ice cream, or sauce, such as ketchup, mayonnaise or mustard. It can be a dispensing apparatus for a liquid or pasty personal care product, such as liquid soap or skin cream.
  • the invention relates to a method for emptying a dispensing bag according to the invention, characterised by the steps of:
  • Figure 1 illustrates a dispensing bag and the process to release a food product from it.
  • Figure 1 shows a representation of 5 bags according to the invention.
  • the first representation shows a dispensing bag wherein no product to be dispensed is present.
  • the bag comprises a first outer wall (1), a second outer wall (2), membrane (3) sealed between the outer walls.
  • the dispensing bag shows a first compartment (4) between the first outer wall (1) and the membrane (3), and a second compartment (5) between the membrane (3) and the second outer wall (2).
  • the second compartment contains product to be dispensed.
  • the dispensing bag comprises a top part, or first end (8) and a bottom part, or second end (9).
  • a gas entry (6) is present at the top part
  • a product outlet (7) is present at the bottom part.
  • the second till the fifth representation show the emptying process of the dispensing bag, wherein the first compartment is filled with gas, and the second compartment is released due to pressure to the membrane.
  • the membrane aligns along the inside of the second outer wall, and the product is released from the second compartment through the product outlet.
  • Figure 2 illustrates a dispensing bag of the invention wherein a seal pattern is applied.
  • An outer seal (10) is a permanent seal that connects the first and second outer walls and the membrane at their periphery.
  • Non-permanent seals (11) in the form of lines adhere the membrane to the first outer wall.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP17191042.5A 2017-09-14 2017-09-14 Sac de distribution Withdrawn EP3456656A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17191042.5A EP3456656A1 (fr) 2017-09-14 2017-09-14 Sac de distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17191042.5A EP3456656A1 (fr) 2017-09-14 2017-09-14 Sac de distribution

Publications (1)

Publication Number Publication Date
EP3456656A1 true EP3456656A1 (fr) 2019-03-20

Family

ID=59923241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17191042.5A Withdrawn EP3456656A1 (fr) 2017-09-14 2017-09-14 Sac de distribution

Country Status (1)

Country Link
EP (1) EP3456656A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930423A (en) * 1957-11-12 1960-03-29 Us Rubber Co Collapsible container
US3945539A (en) * 1966-08-16 1976-03-23 Thiokol Corporation Method and apparatus for expelling fluids
DE19513223A1 (de) 1995-04-12 1996-10-17 Matthias Hoffmeier Behälter für viskoses Füllgut
US20050103802A1 (en) * 2003-11-17 2005-05-19 Advanced Technology Materials, Inc. Blown bottle with intrinsic liner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930423A (en) * 1957-11-12 1960-03-29 Us Rubber Co Collapsible container
US3945539A (en) * 1966-08-16 1976-03-23 Thiokol Corporation Method and apparatus for expelling fluids
DE19513223A1 (de) 1995-04-12 1996-10-17 Matthias Hoffmeier Behälter für viskoses Füllgut
US20050103802A1 (en) * 2003-11-17 2005-05-19 Advanced Technology Materials, Inc. Blown bottle with intrinsic liner

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