WO2002002871A1 - Sachets d'infusions et materiaux a cet effet - Google Patents

Sachets d'infusions et materiaux a cet effet Download PDF

Info

Publication number
WO2002002871A1
WO2002002871A1 PCT/GB2001/002642 GB0102642W WO0202871A1 WO 2002002871 A1 WO2002002871 A1 WO 2002002871A1 GB 0102642 W GB0102642 W GB 0102642W WO 0202871 A1 WO0202871 A1 WO 0202871A1
Authority
WO
WIPO (PCT)
Prior art keywords
tissue
fibres
pla
weight
insulating layer
Prior art date
Application number
PCT/GB2001/002642
Other languages
English (en)
Inventor
Nicholas Robin Whittaker
John Edward Rose
Simon Mark Scott
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 EP01949619A priority Critical patent/EP1299596A1/fr
Priority to AU2001270742A priority patent/AU2001270742A1/en
Priority to US10/312,241 priority patent/US20040013831A1/en
Publication of WO2002002871A1 publication Critical patent/WO2002002871A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/24—Polyesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/08—Synthetic cellulose fibres from regenerated cellulose
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]

Definitions

  • the present invention relates to porous, fibrous web materials of the heat seal type for use in producing beverage infusion packages (e.g. tea bags, coffee bags and the like) as well as to beverage infusion packages produced using such materials.
  • beverage infusion packages e.g. tea bags, coffee bags and the like
  • Beverage infusion packages 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 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 plurality of servings 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.
  • Heat seal tissue usually (but not necessarily) comprises two or more layers wet-laid in succession one on top of the other.
  • One layer incorporates thermoplastic fibres (e.g. polypropylene) and the other incorporates only thermally inactive materials.
  • the tissue will generally also incorporate a wet strength agent and is typically manufactured by a wet laid process on an inclined wire paper making machine.
  • a beverage infusion package is produced from the heat seal such tissue by forming the bag such that layers of the tissue incorporating thermoplastic fibres are juxtaposed and then heat sealed.
  • thermoplastics which can be used as fibres for producmg heat seal tissue and, when used for producing beverage infusion packages, give more than adequate performance.
  • tissue has a disadvantage in that the waste material (“broke") generated during manufacture of the tissue (e.g. as a result of reeling operations) cannot successfully be reused. This is because the tissue will not break down during standard alkaline conditions used in fibre recovery processes.
  • non standard chemicals and high levels of mechanical energy have to be used, and these result in a low grade recovered fibre source, still containing thermoplastic material, which is undesirable.
  • the fibre length of the resultant material is dramatically reduced from a virgin mean fibre range of typically 3.5 - 6 mm down to 0.96 - 1.65 mm.
  • thermoplastic fibres are generally not biodegradable and therefore remain in the environment. This disadvantage also applies to the disposal of used beverage infusion packages (produced form the tissue) in land fill sites.
  • a non-woven porous, fibrous tissue for use in producing beverage infusion packages, wherein said tissue comprises fibres produced from poly lactic acid (PL A).
  • a beverage infusion package comprising a bag of a non-woven porous, fibrous tissue as defined in the previous paragraph, and a beverage precursor material contained within the bag.
  • the PLA fibres in the tissue are thermoplastic and serve as heat seal fibres for the purposes of thermally bonding two layers of the tissue together.
  • PLA fibres in tissue to be used for producing beverage infusion bags significantly improves the "re-pulpabilty" of the tissue.
  • Material produced using PLA will re-pulp under alkaline condition as the PLA readily hydrolyses.
  • This method of removing the PLA fibres fits with the process for removing the typical wet strength systems used in the production of the aforementioned porous tissue.
  • the ability to "peel" the PLA fibres away from the de- wet strengthened cellulose matrix enables the fibre length of the recovered pulp to be maximised to a typically mean fibre range of 2.5 - 3.5 mm.
  • thermoplastic fibres This increase in overall mean fibre length range and the removal of thermoplastic fibres enables more waste material to be utilised in both the "parent" product, without detracting from product performance or production efficiencies, and other non related NHSTB products without the problem of inclusion of a small percentage of thermoplastic from the inclusion of broke. These factors result in a significant reduction in the requirement for the use of landfill or incineration of waste "broke” materials.
  • PLA polymers degrade in the . environment into lactic acid (monomer).
  • tissue disposed of to a typical landfill site e.g. in the form of a "used beverage infusion package”
  • tissue disposed of to a typical landfill site e.g. in the form of a "used beverage infusion package”
  • the impact on the environment is significantly reduced compared to the current thermoplastic containing materials.
  • PLA polylactic acid
  • PLA polylactic acid
  • D(+) and L(-) isomers used in the polycondensation reaction, it is possible to significantly affect the degree of crystallinity of the PLA and therefore adjust properties such as melting/softening point.
  • a 100% L(-) isomer would give a melt flow temperature of circa 170°C, while a combination of 88% L(-) and 12 % D(+) isomers would produce a melt flow value of circa 120°C.
  • PLA fibres for use in the invention may be obtained from Unitika Fibre of Japan under the trade name of Terramac.
  • Beverage infusion packages may be produced from tissue in accordance with the invention on standard converting machinery at throughput rates commensurate with those achieved using conventional tissue with seals of adequate strength.
  • the PLA fibres will preferably have a fibre length of 2mm to 8mm, more preferably 4mm to 6mm, and ideally about 5mm.
  • the PLA fibres are from 0.9 dcTex to 4.4 dcTex, more preferably from 1.4 dcTex to 3.3 dcTex, even more preferably 1.7 dcTex to 2.6 dcTex and most preferably from 1.9 dcTex to 2.2 dcTex for optimum fibre coverage.
  • the PLA fibres preferably melt (soften) at a temperature of 140-175°C and have an MFI (MFR) value of 10 - 14 (230°C, 2.16 kgs).
  • the PLA fibres may be single component fibres. It is however also possible for at least a portion of the PLA fibres to be bicomponent fibres comprised of a PLA core and an outer PLA sheath of significantly lower melting point than the core.
  • the PLA core may have a melting point of about 260°C whereas that of the PLA sheath may be 105°C to 175°C.
  • the bicomponent fibres may be the sole PLA fibres in the tissue.
  • the sheath of the bicomponent fibres will generally be such as to melt (soften) at a temperature of 140- 175°C and have an MFI (MFR) value of 10 - 14 (230°C, 2.16 kgs), i.e.
  • the tissue incorporates single component PLA fibres as the heat seal fibres and bicomponent fibres having a sheath with a lower melting (softening) temperature than the single component fibres.
  • the sheath of the bicomponent fibres may have a melting/softening temperature in the range 105°C to 165°C but lower than the melting (softening) temperature of the single component fibres.
  • the core of the bicomponent fibres may have a melting (softening) temperature of about 260°C with the core providing for added strength of the tissue.
  • PLA bicomponent fibres are incorporated in the tissue then these may be thermally bonded to each other at the cross-over points of these fibres during manufacture of the tissue (see infra) to give a significant increase in both dry and wet tensile strength, again with no affect on total tissue re-pulpability and product biodegradability.
  • the incorporation of bicomponent .(sheath and core) fibres in the tissue allows optionally for a string and tag to be thermally bonded to the beverage infusion bag.
  • Tissue in accordance with the invention will generally have a basis weight of 10 to 50 g m "2 more preferably 10 to 30 g m '2 , even more preferably 10 to 20 g m " 2 and still more preferably 10 to 18 g m "2 , e.g. 12 to 17 g m "2 .
  • the tissue will be a wet-laid material although production of the tissue as a dry laid material is also possible.
  • a heat seal tissue in accordance .with the invention may comprise only a single layer which is the thermally active layer and which incorporates the PLA fibres and also cellulosic material as conventionally used in the formation of tissue.
  • the heat seal tissue may also comprise an insulating layer incorporating only thermally inactive fibres.
  • the heat seal tissue incorporates a total of 10% to 40%, more preferably 15% to 35% by weight of the PLA fibres based on the weight of the thermally active layer. If the PLA fibres are comprised of both single component and bicomponent fibres then it is preferred that 60-80% by weight of the PLA fibres are single component fibres and correspondingly 20-40% by weight (of the PLA fibres) are bicomponent fibres.
  • Cellulosic fibres for incorporation in the thermally active layer may be conventionally woody and/or non-woody materials, e.g. Manila hemp, sisal, jute, bleached and unbleached soft wood and hard wood species.
  • the cellulose fibres may be of a regenerated or reconstituted cellulose such as viscose rayon or lyocell.
  • the cellulosic fibres in the thermally active layer will have a length of 1 mm to 5 mm.
  • Cellulosic fibres preferably provide 30% to 65% by Weight of the thermally active layer. It is preferred that the tissue incorporates 1% to 20%, more preferably 7% to 15% by weight of floe based on the weight on the thermally active layer.
  • Floes for use in the invention are heavily fibrillated fibres and for materials produced by a wet-laying technique on a papermaking machine (e.g. an inclined wire machine) act as an effective binder to provide "classic" wet web strength prior to drying and removing the non-woven tissue from the inclined wire forming fabric and provide dry web strength after drying the non-woven web.
  • the floe will generally have a fibre length within the range 0.1mm to 1.5mm but preferably about 1.0mm. At this fibre length, the area coverage of the fibre is significantly increased, compared to a typical fibrillated 5mm fibre, by a combination of internal and. external "cleaving" of the fibre wall surface.
  • the floe will have a SR value in the range 60° to 100°, more preferably 70° to 95°.
  • the heat seal tissue may optionally comprise both a thermally active layer (i.e. one incorporating the heat seal fibres) and a thermally inactive or insulating layer.
  • the former preferably comprises 60% to 80% by weight of the heat seal tissue and the latter 20% to 40% on the same basis. More preferably the former comprises 60% to 75% and the latter 25% to 40% on the same basis. Most preferably the heat seal tissue comprises 65% to 75% by weight of the thermally active layer and 25% to 35% by weight of the insulating layer.
  • the heat seal tissue incorporates a thermally inactive layer then this preferably comprises natural cellulosic fibres. Although it can also contain regenerated cellulose such as viscose rayon or lyocell in the order of 70% to 95% by weight of wood pulp and 5% to 30% by weight of synthetic cellulose, most preferably about 85% by weight wood pulp and about 15% by weight synthetic cellulose.
  • regenerated cellulose such as viscose rayon or lyocell in the order of 70% to 95% by weight of wood pulp and 5% to 30% by weight of synthetic cellulose, most preferably about 85% by weight wood pulp and about 15% by weight synthetic cellulose.
  • the synthetic cellulose fibres are preferably shorter than those in the thermally active layer and may have a length of 0.5mm to 5mm, preferably 1mm to 3mm.
  • Tissue in accordance with the invention is most preferably produced by wet- laying employing technique well established in this field.
  • the tissue may for example be produced on an inclined wire papermaking machine.
  • tissue comprises a thermally active layer and an insulating layer then these may be laid in either order. If biocomponent fibres are included then they may be thermally bonded during drying of the tissue on the paper making machine giving a significant increase in both dry and wet tensile strength.
  • the dry tensile strength of a wet laid tissue can be increased by coating (e.g. using a size press, blade coater, gravure printing press etc.) with a solution of a starch, or poly(vinyl)alcohol (95 - 99% hydrolysed) or latex (preferably a food approved SBR) or a cellulose ether, e.g. selected from methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, propyl cellulose, hydroxypropyl cellulose but most preferably carboxymethyl cellulose, at a level of 0.5% to 3%, more preferably 1% to 2% by weight of the tissue, to improve mechanical strengths.
  • a starch or poly(vinyl)alcohol (95 - 99% hydrolysed) or latex (preferably a food approved SBR) or a cellulose ether, e.g. selected from methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, propyl cellulose,
  • wet strength may be enhanced by the use of melamine.
  • Tissue in accordance with the invention may alternatively be produced by a dry-laying technique, in which case it will be preferred that the tissue incorporate bicomponent fibres.
  • Beverage infusion packages may be produced from tissue in accordance with the invention on standard converting machinery at throughput rates commensurate with those achieved using conventional tissue.
  • Example 1 The invention is illustrated by the following non-limiting Examples.
  • Example 1 The invention is illustrated by the following non-limiting Examples.
  • Example 1 The invention is illustrated by the following non-limiting Examples.
  • a wet-laid heat seal tissue having a basis weight of 16.5 g m '2 was prepared from a furnish comprising
  • the fibrous web was treated with 3.0% by weight melamine applied at the wet end of the paper machine.
  • the resultant product converted at satisfactory speeds on standard tea-bag manufacturing machinery and gave tea bags with adequate seal strengths.
  • a wet-laid heat seal tissue having a basis weight of 16.5 gs was prepared from a furnish comprising
  • Lyocell fibres (3mm, 2.4 dcTex) 21.0%
  • the melting point for the single PLA fibre was 170°C
  • the melting points for the bi-component PLA fibre were 130°C sheath and 170°C core
  • the product obtained also again converted well on standard tea bag . manufacturing apparatus to give tea bags with adequate seal strength to with stand brewing by microwave method.
  • tissue produced in Examples 1 and 2 was under laboratory conditions to replicate the typical production scale re-pulping process.
  • the re-pulping procedure was also carried out on a standard polypropylene-containing tissue.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un tissu non tissé, poreux et fibreux s'utilisant dans la production de sachets d'infusion comprenant des fibres cellulosiques et des fibres d'acide polylactique afin d'améliorer la retrituration des déchets de matériaux.
PCT/GB2001/002642 2000-06-30 2001-06-19 Sachets d'infusions et materiaux a cet effet WO2002002871A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01949619A EP1299596A1 (fr) 2000-06-30 2001-06-19 Sachets d'infusions et materiaux a cet effet
AU2001270742A AU2001270742A1 (en) 2000-06-30 2001-06-19 Beverage infusion packages and materials therefor
US10/312,241 US20040013831A1 (en) 2000-06-30 2001-06-19 Beverage infusion packages and materials therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0016116.6A GB0016116D0 (en) 2000-06-30 2000-06-30 Beverage infusion packages and materials therefor
GB0016116.6 2000-06-30

Publications (1)

Publication Number Publication Date
WO2002002871A1 true WO2002002871A1 (fr) 2002-01-10

Family

ID=9894781

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/002642 WO2002002871A1 (fr) 2000-06-30 2001-06-19 Sachets d'infusions et materiaux a cet effet

Country Status (5)

Country Link
US (1) US20040013831A1 (fr)
EP (1) EP1299596A1 (fr)
AU (1) AU2001270742A1 (fr)
GB (1) GB0016116D0 (fr)
WO (1) WO2002002871A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004018770A1 (fr) * 2002-08-22 2004-03-04 J R Crompton Limited Conditionnement pour boissons
WO2004044328A1 (fr) * 2002-11-06 2004-05-27 Kimberly-Clark Worldwide, Inc. Produit papier menager multicouche
US6752905B2 (en) 2002-10-08 2004-06-22 Kimberly-Clark Worldwide, Inc. Tissue products having reduced slough
WO2006042713A2 (fr) * 2004-10-20 2006-04-27 Kalle Gmbh Non-tisse ayant une meilleure resistance a l'humidite et resistance aux alcalis et enveloppes de produits alimentaires a base d'hydrate de cellulose realisees a partir de ce non-tisse
WO2009008822A1 (fr) * 2007-07-12 2009-01-15 Stfi-Packforsk Ab Procédé servant à fabriquer une matière composite ayant un fluage mécano-sorptif réduit, matière composite produite par le procédé et utilisation du procédé et de la matière composite
CN102277795A (zh) * 2011-08-12 2011-12-14 浙江凯恩特种材料股份有限公司 一种滤袋滤纸及茶叶滤袋和袋装茶叶
CN103079970A (zh) * 2010-06-10 2013-05-01 菲斯克系统美国有限公司 单一饮品冲煮盒、系统及其使用方法
CN103572647A (zh) * 2013-10-15 2014-02-12 昆山威胜干燥剂研发中心有限公司 一种干燥剂包覆膜
CN104285005A (zh) * 2012-05-11 2015-01-14 索德拉细胞公司 制造包含纤维素浆纤维和热塑性基质的复合品的方法
CN109335254A (zh) * 2018-10-10 2019-02-15 江苏云之尚节能科技有限公司 一种全降解的保温环保速运包装袋
US11180629B2 (en) 2018-01-12 2021-11-23 Circ, LLC Methods for recycling cotton and polyester fibers from waste textiles
US11305254B2 (en) 2015-06-11 2022-04-19 Circ, LLC Process and system for producing pulp, energy, and bioderivatives from plant-based and recycled materials

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206924B4 (de) * 2002-02-19 2005-12-15 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Heisssiegelfähige Filtermaterialien
DE10206926B4 (de) * 2002-02-19 2005-12-15 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Heisssiegelfähige Filtermaterialien
DE10231403B3 (de) * 2002-07-11 2004-02-05 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Heisssiegelfähiges Filtermaterial
US20080095959A1 (en) * 2006-10-20 2008-04-24 The Republic Of Tea Infusion package
SI2109637T1 (sl) * 2007-01-16 2018-09-28 Basf Se Hibridni sistemi iz penjenih termoplastičnih elastomerov in poliuretanov
US8828895B2 (en) * 2010-08-25 2014-09-09 Nonwoven Network LLC Webs of bi-component and mono-component Co-PLA fibers
CN103313837B (zh) * 2011-01-13 2015-11-25 荷兰联合利华有限公司 热成形冲泡包的方法和设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07126970A (ja) * 1993-11-05 1995-05-16 Toyobo Co Ltd 生分解性不織布
EP0801172A1 (fr) * 1995-10-13 1997-10-15 Unicharm Corporation Voile biodegradable et hydrolysable
JP2000136478A (ja) * 1998-10-27 2000-05-16 Unitika Ltd 生分解性を有する成型用不織布、その製造方法、同不織布を用いてなる容器形状品

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728672A (en) * 1955-04-14 1955-12-27 Young Julius Porous container of a beverage infusion commodity and vessel cover package combination
ES2230689T3 (es) * 1997-05-02 2005-05-01 Cargill, Incorporated Fibras de polimero degradable; preparacion, producto y procedimiento de uso.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07126970A (ja) * 1993-11-05 1995-05-16 Toyobo Co Ltd 生分解性不織布
EP0801172A1 (fr) * 1995-10-13 1997-10-15 Unicharm Corporation Voile biodegradable et hydrolysable
JP2000136478A (ja) * 1998-10-27 2000-05-16 Unitika Ltd 生分解性を有する成型用不織布、その製造方法、同不織布を用いてなる容器形状品

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199528, Derwent World Patents Index; Class A23, AN 1995-213551, XP002176873 *
DATABASE WPI Section Ch Week 200035, Derwent World Patents Index; Class A23, AN 2000-403733, XP002176874 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004018770A1 (fr) * 2002-08-22 2004-03-04 J R Crompton Limited Conditionnement pour boissons
US6752905B2 (en) 2002-10-08 2004-06-22 Kimberly-Clark Worldwide, Inc. Tissue products having reduced slough
WO2004044328A1 (fr) * 2002-11-06 2004-05-27 Kimberly-Clark Worldwide, Inc. Produit papier menager multicouche
WO2006042713A2 (fr) * 2004-10-20 2006-04-27 Kalle Gmbh Non-tisse ayant une meilleure resistance a l'humidite et resistance aux alcalis et enveloppes de produits alimentaires a base d'hydrate de cellulose realisees a partir de ce non-tisse
WO2006042713A3 (fr) * 2004-10-20 2007-02-08 Kalle Gmbh Non-tisse ayant une meilleure resistance a l'humidite et resistance aux alcalis et enveloppes de produits alimentaires a base d'hydrate de cellulose realisees a partir de ce non-tisse
US8268129B2 (en) 2004-10-20 2012-09-18 Kalle Gmbh Nonwoven having improved wet fastness and alkali resistance and cellulose hydrate-based food casing from said nonwoven
WO2009008822A1 (fr) * 2007-07-12 2009-01-15 Stfi-Packforsk Ab Procédé servant à fabriquer une matière composite ayant un fluage mécano-sorptif réduit, matière composite produite par le procédé et utilisation du procédé et de la matière composite
CN103079970A (zh) * 2010-06-10 2013-05-01 菲斯克系统美国有限公司 单一饮品冲煮盒、系统及其使用方法
WO2013023329A1 (fr) * 2011-08-12 2013-02-21 浙江凯恩特种材料有限公司 Papier filtre pour sachet filtre, sachet filtre pour thé et sachet de thé
CN102277795A (zh) * 2011-08-12 2011-12-14 浙江凯恩特种材料股份有限公司 一种滤袋滤纸及茶叶滤袋和袋装茶叶
CN104285005A (zh) * 2012-05-11 2015-01-14 索德拉细胞公司 制造包含纤维素浆纤维和热塑性基质的复合品的方法
CN104321487A (zh) * 2012-05-11 2015-01-28 索德拉细胞公司 制备包含纤维素浆纤维和热塑性纤维的组合物的方法
CN103572647A (zh) * 2013-10-15 2014-02-12 昆山威胜干燥剂研发中心有限公司 一种干燥剂包覆膜
CN103572647B (zh) * 2013-10-15 2015-11-18 昆山威胜干燥剂研发中心有限公司 一种干燥剂包覆膜
US11305254B2 (en) 2015-06-11 2022-04-19 Circ, LLC Process and system for producing pulp, energy, and bioderivatives from plant-based and recycled materials
US11180629B2 (en) 2018-01-12 2021-11-23 Circ, LLC Methods for recycling cotton and polyester fibers from waste textiles
US11370895B2 (en) 2018-01-12 2022-06-28 Circ, LLC Methods for recycling cotton and polyester fibers from waste textiles
US12006403B2 (en) 2018-01-12 2024-06-11 Circ, LLC Methods for recycling cotton and polyester fibers from waste textiles
CN109335254A (zh) * 2018-10-10 2019-02-15 江苏云之尚节能科技有限公司 一种全降解的保温环保速运包装袋

Also Published As

Publication number Publication date
EP1299596A1 (fr) 2003-04-09
AU2001270742A1 (en) 2002-01-14
GB0016116D0 (en) 2000-08-23
US20040013831A1 (en) 2004-01-22

Similar Documents

Publication Publication Date Title
WO2002002871A1 (fr) Sachets d'infusions et materiaux a cet effet
AU2015352319B2 (en) Fiber sheets and structures comprising fiber sheets
EP3250751B1 (fr) Matériaux fibreux thermoplastiques et procédé de production
US20230249889A1 (en) Folded 3d shaped packaging product from an air-laid blank
US20080076695A1 (en) Dryer sheet and methods for manufacturing and using a dryer sheet
MXPA05005505A (es) Productos de tisu que tienen resistencia mejorada.
JP2013501166A (ja) 水崩壊性繊維シート、前記繊維シートの製造方法、コアの製造における前記繊維シートの使用
US20030175456A1 (en) Beverage infustion packagaes and materials therefor
EP0963489B1 (fr) Non-tisse poreux
EP3819426A1 (fr) Papier cellulosique compostable à base de cellulose pour barrière aux gaz dans les matériaux d'emballage
US20080076696A1 (en) Dryer sheet and methods for manufacturing and using a dryer sheet
SE2050889A1 (en) Folded 3D shaped packaging product
JP3423363B2 (ja) 熱接着された紙
RU2735609C1 (ru) Вспененные волокнистые листы с извитыми штапельными волокнами
EP4178876A1 (fr) Produit d'emballage de forme 3d à partir d'une découpe de feuille formée par voie pneumatique
JP3960749B2 (ja) 飲料用フィルターバッグ
WO2004018770A1 (fr) Conditionnement pour boissons
WO2007035525A2 (fr) Procédé de production de substrat de fibre naturelle renforcé par un non-tissé synthétique
US20230256702A1 (en) Recyclable 3d shaped product from an air-laid blank
KR102223180B1 (ko) 식품 포장지용 판지 제조방법 및 식품 포장지용 판지
JP2005139566A (ja) ポリ乳酸繊維とパルプからなるスパンレース
JP2000178894A (ja) 麻繊維を原料とする低密度体
CA3225753A1 (fr) Capsule pour la preparation d'une boisson
JP2001303489A (ja) 模様付け生分解性水切りゴミ袋用シート、及びその製造方法、並びに模様付け生分解性水切りゴミ袋
JP2000120000A (ja) 古紙を原料とする低密度体

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2001949619

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2001949619

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWE Wipo information: entry into national phase

Ref document number: 10312241

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Ref document number: 2001949619

Country of ref document: EP