WO2001056904A1 - Conditionnements pour infusions et materiaux utilises - Google Patents

Conditionnements pour infusions et materiaux utilises Download PDF

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Publication number
WO2001056904A1
WO2001056904A1 PCT/GB2001/000270 GB0100270W WO0156904A1 WO 2001056904 A1 WO2001056904 A1 WO 2001056904A1 GB 0100270 W GB0100270 W GB 0100270W WO 0156904 A1 WO0156904 A1 WO 0156904A1
Authority
WO
WIPO (PCT)
Prior art keywords
package
tissue
film
poly
vinyl alcohol
Prior art date
Application number
PCT/GB2001/000270
Other languages
English (en)
Inventor
John Edward Rose
Original Assignee
J R Crompton Limited
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 J R Crompton Limited filed Critical J R Crompton Limited
Priority to AU2001230332A priority Critical patent/AU2001230332A1/en
Publication of WO2001056904A1 publication Critical patent/WO2001056904A1/fr

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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
    • 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
    • B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags

Definitions

  • the present invention relates to a beverage infusion packages (e.g. tea bags, coffee bags and the like) and other package having a content which needs to be kept “fresh” and which is to be “treated” with water whilst within the package.
  • the invention also relates to a porous, fibrous web materials for use in producing such packages.
  • Beverage infusion packages such as tea bags comprise a particulate beverage precursor material, e.g. tea leaves or ground coffee, in a bag, sachet, pouch or the like (all conveniently referred to herein as a bag) of a porous, fibrous (usually cellulosic) material.
  • This material typically has a basis weight of 10 to 30 g m “2 and is often referred to as "tissue” or “tissue paper".
  • the tissue may be of the "heat seal” or "non- heat seal” type
  • the package is infused with hot water. This may be done, for example, by immersing the package in hot water, pouring hot water onto the package, or heating water and the bag in a microwave oven.
  • the infusion package may be of a size, and contain an amount of the beverage precursor material, so as to be intended for producing a single cup of the beverage.
  • the package may be of a "catering size” and as such intended to produce a multitude of cups of the beverage.
  • Such a “catering size” package may for example contain ground coffee as the beverage precursor material and be used in a commercial coffee - making machine.
  • a disadvantage of such packages is that, unless special precautions are taken, there may be oxidation or other deterioration (e.g. loss of flavour components by volatalisation) of the beverage precursor material during storage of the package.
  • oxidation or other deterioration e.g. loss of flavour components by volatalisation
  • the manufacturer of the wrapped package has to carry out the operations of, firstly, producing the package itself and, secondly enclosing it in the foil wrapper.
  • a beverage infusion package comprising a bag of a porous, fibrous tissue containing a beverage precursor material wherein said tissue has laminated thereto a barrier film of a water soluble material.
  • the invention also provides, in a second aspect, a material for use informing the bag of a beverage infusion package, said material comprising a porous fibrous tissue having laminated thereto a barrier film a water soluble material.
  • the barrier film serves to reduce, inhibit or prevent oxidation or other deterioration of the beverage precursor material by virtue of providing a substantially gas impermeable layer.
  • the package may contain an atmosphere of nitrogen (or other non-toxic inert gas) which is retained in the package by virtue of the gas impermeability of the barrier film and thus acting further to prevent oxidation or other deterioration.
  • the barrier film is however water soluble and dissolves during infusion of the package so that the film is "automatically” removed allowing the beverage to be infused in the normal way.
  • the present invention provides an infusion package which allows the beverage precursor material to be maintained "fresh” and which can be used without the need to remove the package from an outer foil wrapper.
  • the water-soluble barrier film does not detract from the normally expected infusion (brewing) rate nor form the normal taste, appearance or "mouth feel” of the infusion. Additionally, the film reduces the amount of "dust” (of the beverage precursor material) which would otherwise be lost from the package during its storage.
  • the barrier film should be of a non-toxic food grade material which has the required gas permeability and water solubility properties.
  • the film may, for example, have a thickness of 1 to 70 microns, more preferably 1 to 15 microns, and most preferably 1 to 10 microns.
  • the film is insoluble in cold water but dissolves in water at a temperature above 70°C.
  • the barrier film is of poly(vinyl alcohol).
  • the poly(vinyl alcohol) is preferably one having a degree of hydrolysis of at least 60%, more preferably at least 80%, and most ideally at least 85%.
  • the degree of hydrolysis may, for example, be 95% to 99%.
  • the poly(vinyl alcohol) is one for which a 4% aqueous solution at 20°C has a viscosity of 5 to 100 mPa.s (preferably 25 to 30 mPa.s).
  • the molecular weight of the poly(vinyl alcohol) may for example be 20,000 to 200,000.
  • Poly(vinyl alco 10I) has excellent flavour retaining properties due to its low gas permeability (to oxygen, nitrogen and carbon dioxide) although this permeability is dependent on the degree of hydrolysis of the poly(vinyl alcohol) and the relative humidity of the environment to which the film is subjected. Generally the higher the degree of hydrolysis the lower will be the gas permeability of the film for a given relative humidity. For a given degree of hydrolysis an increase in humidity will increase the gas permeability. Permeability of the film may also be controlled by inclusion of appropriate additives.
  • Suitable examples of poly(vinyl alcohol) for use in the invention are available from Hoechst under the trade mark Mowiol. Particularly suitable grade are Mowiol 26-88 and Mowiol 28-99, in which designations the number proceeding the hyphen is the viscosity, in mPa.s, of a 4% solution in water at 20°C and the number subsequent to the hyphen is the degree of hydrolysis. Also suitable for use in the invention is Airvol 528 (88% hydrolysed) and Airvol 125 (99% hydrolysed).
  • the film may be "pre-formed” (i.e. produced separately of the tissue) and then laminated thereto.
  • a film maybe produced by traditional methods such as film blowing and casting, using the materials disclosed in GB-A-2 291 831 obtained from Environmental Polymers Ltd.
  • This film may be laminated to the tissue web by "hot welding” or by "solvent bonding.
  • the film may be laminated by passing it through a suitable heated calender stack to hot weld the components to form a composite.
  • the temperature of the unit would depend on a number of factors
  • nip pressure applied to the calender stack rolls typically at a line speed of 240 mtrs/min and a linear nip pressure of between 5 to 50 Kg/cm the calender stack would be heated to between 180°C to 240°C depending on the degree of hydrolysis.
  • the product could alternatively be laminated by applying the above pressure range to the composite in the presence of a fine mist of water (warm or cold depending on degree of hydrolysis). This would be applied between the paper and PVOH film just prior to the in-going nip of the pressure rolls and act as an adhesive aid by causing the contact surface of the PVOH to become partially mobile and tacky.
  • the film may be formed in situ on the tissue, either as the latter is produced on the paper-making machine or in a separate operation post-manufacture of the tissue.
  • the laminate may be produced by passing the tissue through a unit that is suitable for applying a "functional coating".
  • the term "functional coating” refers to coatings other than traditional pigmented coatings for printed papers.
  • the functional properties that the coatings can impart to paper include appearance, protection and control of surface properties.
  • the properties are by-and-large derived from the film properties of the polymeric materials employed.
  • a continuous "film” is particularly important for barrier properties.
  • the selection of the coating method relies on a number of factors such as the strength, wettability, porosity, density and smoothness of the tissue and the formulation of the coating such as total solids, type of solvent (water or organic), surface tension and viscosity.
  • extrusion coating which is sometimes refereed to as extrusion laminating.
  • This method briefly involves mixing the coating formulation via an extruder unit and metering the homogeneous mixture under pressure through a slotted die to form a "free film”. This "free film” is then drawn down to the desired thickness by the stretching affect of running the base tissue web at a higher speed than the exit speed of the polymer film. The film is then subsequently combined with the tissue substrate by passing the material through a chilled metal roll and a rubber-covered pressure roll.
  • the extrusion coating method can if desired achieve very low lay down rates of high molecular weight polymers which makes them ideal for coating food - packaging papers.
  • the tissue will generally have a basis weight of 10 to 50gm " , more typically 10 to 30 gm “2 ' e.g. 10-20 gm "2 .
  • the tissue may be of the "heat seal” or “non-heat seal” type.
  • "Heat seal” tissue comprises two or more layers wet-laid in succession one on top of the other. One layer contains only cellulosic fibres and the other (or at least one other layer) incorporates thermoplastic fibres.
  • the "heat seal” tissue may for example be that produced by J.R. Crompton Ltd under the name SUPERSEAL (Registered Trade Mark). Alternatively the "heat seal” tissue may be as disclosed in WO- A- 9836128 (J.R. Crompton).
  • a beverage infusion package is produced from such tissue by forming the bag such that layers of the tissue incorporating thermoplastic fibres are juxtaposed and then heat sealed. With such a "heat seal” tissue, the water-soluble film will generally be provided on the side of the tissue incorporating the thermoplastic fibres and as such will be on the inner side of the bag containing the beverage precursor material.
  • Non-heat seal tissue generally (but not necessarily) comprises a single wet- laid layer of cellulosic fibres and in some instances approved synthetic fibres such as viscose rayon.
  • the "non-heat seal” tissue may be produced by laying successive layers (possibly of differing composition) one on top of the other (e.g. as described in WO-A-9601839).
  • the water soluble film may be provided either on the outer surface or inner surface of the bag containing the beverage precursor material.
  • the tissue may have a degree of "openness" in its structure commensurate of that with conventional tissues used for forming beverage infusion packages.
  • the water-soluble film does however allow the tissue to have a significantly more open structure. With a tissue of more open structure, the laminate of the tissue and water- soluble film would be more transparent (than for a tissue of conventional "openness"). Furthermore, a faster infusion would be obtained and it would be possible to use smaller infusion material particle sizes which would have a beneficial cost impact for the tea/coffee packer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

Cette invention concerne un conditionnement pour infusions comprenant un sachet fait d'un tissu poreux en fibre qui renferme un précurseur d'une boisson (tel que du café). Sur ce tissu est laminé un film barrière fait d'un matériau hydrosoluble, un poly(vinyl alcool). Le film barrière à pour fonction de réduire, d'empêcher ou de prévenir l'oxydation ou autre phénomène de détérioration du précurseur de boisson. Par voie de conséquence, il est inutile d'enfermer le conditionnement dans une feuille d'emballage afin de conserver sa « fraîcheur » au matériau précurseur. De plus, le film barrière est hydrosoluble et se dissout pendant la phase d'infusion.
PCT/GB2001/000270 2000-02-02 2001-01-25 Conditionnements pour infusions et materiaux utilises WO2001056904A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001230332A AU2001230332A1 (en) 2000-02-02 2001-01-25 Beverage infusion packages and materials therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0002339.0 2000-02-02
GB0002339A GB0002339D0 (en) 2000-02-02 2000-02-02 Beverage infusion packages and materials therefor

Publications (1)

Publication Number Publication Date
WO2001056904A1 true WO2001056904A1 (fr) 2001-08-09

Family

ID=9884785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/000270 WO2001056904A1 (fr) 2000-02-02 2001-01-25 Conditionnements pour infusions et materiaux utilises

Country Status (3)

Country Link
AU (1) AU2001230332A1 (fr)
GB (1) GB0002339D0 (fr)
WO (1) WO2001056904A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007084587A2 (fr) * 2006-01-20 2007-07-26 Monosol Rx, Llc Emballages doublés d'un film et leur procédé de fabrication
GB2456524A (en) * 2008-01-15 2009-07-22 Concentrated Solutions Ltd Apparatus For Dispensing A Water Dispersible Substance
GB2456523A (en) * 2008-01-15 2009-07-22 Concentrated Solutions Ltd Storing and dispensing a water dispersable substance
US8652378B1 (en) 2001-10-12 2014-02-18 Monosol Rx Llc Uniform films for rapid dissolve dosage form incorporating taste-masking compositions
US8765167B2 (en) 2001-10-12 2014-07-01 Monosol Rx, Llc Uniform films for rapid-dissolve dosage form incorporating anti-tacking compositions
US8900497B2 (en) 2001-10-12 2014-12-02 Monosol Rx, Llc Process for making a film having a substantially uniform distribution of components
US8900498B2 (en) 2001-10-12 2014-12-02 Monosol Rx, Llc Process for manufacturing a resulting multi-layer pharmaceutical film
US8906277B2 (en) 2001-10-12 2014-12-09 Monosol Rx, Llc Process for manufacturing a resulting pharmaceutical film
US9108340B2 (en) 2001-10-12 2015-08-18 Monosol Rx, Llc Process for manufacturing a resulting multi-layer pharmaceutical film
US10272607B2 (en) 2010-10-22 2019-04-30 Aquestive Therapeutics, Inc. Manufacturing of small film strips
US10285910B2 (en) 2001-10-12 2019-05-14 Aquestive Therapeutics, Inc. Sublingual and buccal film compositions
US10821074B2 (en) 2009-08-07 2020-11-03 Aquestive Therapeutics, Inc. Sublingual and buccal film compositions
US11077068B2 (en) 2001-10-12 2021-08-03 Aquestive Therapeutics, Inc. Uniform films for rapid-dissolve dosage form incorporating anti-tacking compositions
US11191737B2 (en) 2016-05-05 2021-12-07 Aquestive Therapeutics, Inc. Enhanced delivery epinephrine compositions
US11207805B2 (en) 2001-10-12 2021-12-28 Aquestive Therapeutics, Inc. Process for manufacturing a resulting pharmaceutical film
US11273131B2 (en) 2016-05-05 2022-03-15 Aquestive Therapeutics, Inc. Pharmaceutical compositions with enhanced permeation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835587A (en) * 1955-07-25 1958-05-20 Maggiore Louis Coffee brewing package
GB1307637A (en) * 1970-07-28 1973-02-21 Paterson Sons Ltd R Packaging for beverages
US4348293A (en) * 1978-11-17 1982-09-07 Lever Brothers Company Water-insoluble, water-permeable bag having a water-soluble or water-dispersable protective layer and containing a particulate detergent composition
JPH0314473A (ja) * 1989-06-06 1991-01-23 Nitta Gelatin Inc 有効成分浸出用包装体
EP0513692A1 (fr) * 1991-05-17 1992-11-19 Air Products And Chemicals, Inc. Film multicouche soluble dans l'eau pour emballer des matières alcalines
WO1996001839A1 (fr) 1994-07-08 1996-01-25 Immunex Corporation Nouvelle cytokine designee lerk-5
GB2291831A (en) 1994-08-03 1996-02-07 British Tech Group Int Extrusion and moulding apparatus and method
WO1997004956A1 (fr) * 1995-07-29 1997-02-13 J.R. Crompton Limited Materiau poreux en nappe
WO1998036128A1 (fr) 1997-02-12 1998-08-20 J.R. Crompton Limited Non-tisse poreux

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835587A (en) * 1955-07-25 1958-05-20 Maggiore Louis Coffee brewing package
GB1307637A (en) * 1970-07-28 1973-02-21 Paterson Sons Ltd R Packaging for beverages
US4348293A (en) * 1978-11-17 1982-09-07 Lever Brothers Company Water-insoluble, water-permeable bag having a water-soluble or water-dispersable protective layer and containing a particulate detergent composition
JPH0314473A (ja) * 1989-06-06 1991-01-23 Nitta Gelatin Inc 有効成分浸出用包装体
EP0513692A1 (fr) * 1991-05-17 1992-11-19 Air Products And Chemicals, Inc. Film multicouche soluble dans l'eau pour emballer des matières alcalines
WO1996001839A1 (fr) 1994-07-08 1996-01-25 Immunex Corporation Nouvelle cytokine designee lerk-5
GB2291831A (en) 1994-08-03 1996-02-07 British Tech Group Int Extrusion and moulding apparatus and method
WO1997004956A1 (fr) * 1995-07-29 1997-02-13 J.R. Crompton Limited Materiau poreux en nappe
WO1998036128A1 (fr) 1997-02-12 1998-08-20 J.R. Crompton Limited Non-tisse poreux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 129 (M - 1098) 28 March 1991 (1991-03-28) *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9931305B2 (en) 2001-10-12 2018-04-03 Monosol Rx, Llc Uniform films for rapid dissolve dosage form incorporating taste-masking compositions
US11207805B2 (en) 2001-10-12 2021-12-28 Aquestive Therapeutics, Inc. Process for manufacturing a resulting pharmaceutical film
US9108340B2 (en) 2001-10-12 2015-08-18 Monosol Rx, Llc Process for manufacturing a resulting multi-layer pharmaceutical film
US9855221B2 (en) 2001-10-12 2018-01-02 Monosol Rx, Llc Uniform films for rapid-dissolve dosage form incorporating anti-tacking compositions
US11077068B2 (en) 2001-10-12 2021-08-03 Aquestive Therapeutics, Inc. Uniform films for rapid-dissolve dosage form incorporating anti-tacking compositions
US8652378B1 (en) 2001-10-12 2014-02-18 Monosol Rx Llc Uniform films for rapid dissolve dosage form incorporating taste-masking compositions
US8765167B2 (en) 2001-10-12 2014-07-01 Monosol Rx, Llc Uniform films for rapid-dissolve dosage form incorporating anti-tacking compositions
US8900497B2 (en) 2001-10-12 2014-12-02 Monosol Rx, Llc Process for making a film having a substantially uniform distribution of components
US8900498B2 (en) 2001-10-12 2014-12-02 Monosol Rx, Llc Process for manufacturing a resulting multi-layer pharmaceutical film
US8906277B2 (en) 2001-10-12 2014-12-09 Monosol Rx, Llc Process for manufacturing a resulting pharmaceutical film
US10888499B2 (en) 2001-10-12 2021-01-12 Aquestive Therapeutics, Inc. Thin film with non-self-aggregating uniform heterogeneity and drug delivery systems made therefrom
US10285910B2 (en) 2001-10-12 2019-05-14 Aquestive Therapeutics, Inc. Sublingual and buccal film compositions
US10111810B2 (en) 2002-04-11 2018-10-30 Aquestive Therapeutics, Inc. Thin film with non-self-aggregating uniform heterogeneity and drug delivery systems made therefrom
WO2007084587A2 (fr) * 2006-01-20 2007-07-26 Monosol Rx, Llc Emballages doublés d'un film et leur procédé de fabrication
WO2007084587A3 (fr) * 2006-01-20 2008-01-31 Monosolrx Llc Emballages doublés d'un film et leur procédé de fabrication
JP2009523672A (ja) * 2006-01-20 2009-06-25 モノソル アールエックス リミテッド ライアビリティ カンパニー フィルムライニングを施した、包装体およびその製法
GB2456523A (en) * 2008-01-15 2009-07-22 Concentrated Solutions Ltd Storing and dispensing a water dispersable substance
GB2456524A (en) * 2008-01-15 2009-07-22 Concentrated Solutions Ltd Apparatus For Dispensing A Water Dispersible Substance
US10821074B2 (en) 2009-08-07 2020-11-03 Aquestive Therapeutics, Inc. Sublingual and buccal film compositions
US10272607B2 (en) 2010-10-22 2019-04-30 Aquestive Therapeutics, Inc. Manufacturing of small film strips
US10940626B2 (en) 2010-10-22 2021-03-09 Aquestive Therapeutics, Inc. Manufacturing of small film strips
US12023309B2 (en) 2016-05-05 2024-07-02 Aquestive Therapeutics, Inc. Enhanced delivery epinephrine compositions
US11191737B2 (en) 2016-05-05 2021-12-07 Aquestive Therapeutics, Inc. Enhanced delivery epinephrine compositions
US11273131B2 (en) 2016-05-05 2022-03-15 Aquestive Therapeutics, Inc. Pharmaceutical compositions with enhanced permeation

Also Published As

Publication number Publication date
AU2001230332A1 (en) 2001-08-14
GB0002339D0 (en) 2000-03-22

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