US20150151902A1 - Infusion packets and a process for their manufacture - Google Patents

Infusion packets and a process for their manufacture Download PDF

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Publication number
US20150151902A1
US20150151902A1 US14/412,238 US201314412238A US2015151902A1 US 20150151902 A1 US20150151902 A1 US 20150151902A1 US 201314412238 A US201314412238 A US 201314412238A US 2015151902 A1 US2015151902 A1 US 2015151902A1
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United States
Prior art keywords
sheet
thermoforming
thermoplastic material
thermoformed
porous
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Abandoned
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US14/412,238
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English (en)
Inventor
Adrian Michael Woodward
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Conopco Inc
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Conopco Inc
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Assigned to CONOPCO, INC., D/B/A UNILEVER reassignment CONOPCO, INC., D/B/A UNILEVER ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOODWARD, ADRIAN MICHAEL
Publication of US20150151902A1 publication Critical patent/US20150151902A1/en
Abandoned 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/02—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/04—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • B29C51/262—Clamping means for the sheets, e.g. clamping frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/04—Polyesters derived from hydroxycarboxylic acids
    • B29K2067/046—PLA, i.e. polylactic acid or polylactide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0068—Permeability to liquids; Adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7122—Tea bags

Definitions

  • the present invention relates to infusion packets. More particularly, the present invention is directed towards the manufacture of infusion packets (such as tea bags) having a three-dimensional shape.
  • infusion packets e.g. tea bags
  • infusible material e.g. leaf tea, herbal mixtures
  • Such packets are essentially flat and thus restrict the movement of the infusible material within the packet to substantially two dimensions. As a result, the infusion performance of these infusion packets is limited.
  • U.S. Pat. No. 3,549,381 discloses a tea bag comprising tea leaves enclosed in an impervious, flexible, thermoplastic protective film, at least a portion of said film having a regularly spaced embossed pattern on at least one surface which has been drawn sufficiently to develop a preferential weakness in one direction.
  • the tea bag is impervious until it is stretched by the end user.
  • the embossed thermoplastic material is stretched in a first direction during manufacture (to develop a preferential weakness in one direction) and then stretched to some extent in a second direction by the end user (to form a netlike material). Since these tea bags are substantially flat, the movement of the tea leaves enclosed therein is restricted to substantially two dimensions during infusion.
  • infusion packets which have a more three-dimensional shape and which allow greater circulation and mixing of the infusion liquid and the infusible material.
  • tetrahedral-shaped packets such as those described in WO 04/033303 and WO 95/01907.
  • the tetrahedral shape is conventionally formed by making mutually perpendicular transverse seals in a tube of filter material. Apparatus designed for such manufacture is ill-suited to the manufacture of other three-dimensional shapes.
  • thermoforming processes are capable of forming thermoplastic material into a variety of three-dimensional shapes.
  • materials conventionally used to manufacture infusion packets are often not suitable for thermoforming. Firstly, infusion packets are commonly made of paper, which is not thermoformable. Secondly, even if they are made from a thermoformable material, the porosity and thinness of the material makes thermoforming a challenge.
  • thermoforming a material In order to thermoform a material, it is necessary to heat the material to a temperature which is sufficient to allow the thermoplastic material to deform under thermoforming stresses. Very thin material is liable to tear under the stresses applied, particularly when being formed into a three-dimensional shape comprising sharp features. There is also the possibility that the thermoforming process will increase the size of the perforations and/or holes in the material to such an extent that fine particles of infusible material will leak out of the packet. On the other hand, it is important that heating the material does not close the perforations in the material, since this would reduce the porosity of the infusion packet.
  • thermoforming is not a practical method of generating infusion packets.
  • the inventors have overcome these barriers by using a non-conventional material as the substrate for thermoforming.
  • the present invention relates to a process for the manufacture of infusion packets, the process comprising:
  • thermoforming a thermoplastic polymer film with at least one embossed surface This type of thermoplastic material is not conventionally used in the manufacture of infusion packets. Indeed, the first sheet does not need be porous prior to being thermoformed (although the thermoformed portions of the first sheet are porous, i.e. permeable to aqueous liquids). By using this non-conventional material, it has been possible to develop a process which uses thermoforming to manufacture infusion packets having a wide variety of three-dimensional shapes.
  • thermoforming to manufacture infusion packets with three-dimensional shapes from this material.
  • the invention relates to an infusion packet comprising a chamber that contains an infusible substance, wherein the packet comprises material that has been formed into a three-dimensional shape by thermoforming a thermoplastic polymer film having at least one embossed surface such that the thermoformed thermoplastic polymer film is porous.
  • the present invention relates to a process for the manufacture of infusion packets.
  • This process involves a first step in which a first sheet of thermoplastic material is provided.
  • the first sheet of thermoplastic material may or may not be porous.
  • portions of this sheet are thermoformed into a predetermined three-dimensional shape (i.e. a shape having length, breadth and depth).
  • the thermoformed portions of the first sheet are porous (i.e. permeable to aqueous liquids).
  • a variety of three-dimensional shapes are possible. For example, tetrahedral or hemispherical shapes and the like are possible. Hemispherical shapes are particularly preferred.
  • the first sheet of thermoplastic material is a polymer film with at least one embossed surface.
  • the embossed film may be embossed on both surfaces.
  • This first sheet need not be porous prior to being thermoformed.
  • portions of the first sheet i.e. the portions being formed into three-dimensional shapes
  • this sheet can be stretched further than an equivalent porous sheet whilst ensuring that the holes present in the final packet are sufficiently small to minimise sift of the infusible material.
  • the thermoformed thermoplastic material is permeable to aqueous liquids. More precisely, the thermoformed portions of the thermoplastic material are porous.
  • the polymer film preferably comprises polypropylene, polyethylene, or copolymers thereof. High-density polyethylene is particularly preferred.
  • the embossed surface preferably comprises small raised solid bosses (i.e. raised figures) arranged with spaces between adjacent bosses in longitudinal and transverse rows.
  • the bosses in each longitudinal row are in staggered arrangement with the bosses in each adjacent row.
  • the shape of the bosses is not critical, although in a particularly preferred embodiment the bosses are hexagonal in shape.
  • the embossed surface of the polymer film has a regular pattern of bosses. It is particularly preferred that the bosses are regularly spaced in longitudinal and transverse rows. In certain embodiments, the bosses are regularly spaced in mutually perpendicular rows.
  • the embossed surface of the polymer film preferably has at least 60 bosses per 25 mm, more preferably at least 80 bosses per 25 mm, most preferably at least 100 bosses per 25 mm.
  • the embossed polymer film can be produced by extruding polymer film, usually as a molten film, into the nip between two suitable rollers. Embossing is achieved by passing the polymer film between pair of rollers wherein at least one of the pair is engraved. The engraving pattern determines the shape and spacing of the bosses on the embossed surface of the film. In order to produce a polymer film which is embossed on both surfaces, the polymer film is passed between a pair of rollers wherein both of the rollers are engraved.
  • the embossed polymer film is porous prior to thermoforming.
  • This can be achieved by simultaneous or sequential stressing of the embossed film in two directions in the plane of the film.
  • this type of porous material can be produced as described in GB 914,489, GB 1,055,963 and GB 1,106,254.
  • a second sheet of material is provided.
  • This second sheet of material need not be the same material as the first sheet.
  • the second sheet of material need not be thermoformable, and as such can be a material conventionally used for the manufacture of infusion packets.
  • the second sheet of material is heat-sealable.
  • the second sheet of material is a sheet of thermoplastic material. Suitable examples include polyethylene terephthalate (PET) and poly lactic acid (PLA).
  • the second sheet of material is also a polymer film with at least one embossed surface. This permits thermoforming of portions of the second sheet.
  • the second sheet of material may be porous or non-porous prior to being thermoformed. The thermoformed portions of the second sheet are preferably porous.
  • the process involves dosing an infusible substance.
  • the infusible substance can be dosed into the thermoformed portion of the first sheet or onto the second sheet.
  • the infusible material is dosed into the thermoformed portion of the first sheet.
  • infusible substances are tea plant material, herb plant material, fruit pieces and/or flower material (e.g. petals).
  • flower material e.g. petals
  • the term “tea plant material” refers to leaf and/or stem material from Camellia sinensis var. sinensis or Camellia sinensis var. assamica . It also includes rooibos obtained from Aspalathus linearis , as well as the product obtained by blending any of these tea plant materials.
  • the leaf material may be fermented (i.e. black tea), partially fermented (i.e. oolong tea), or substantially unfermented (i.e. green tea).
  • first and second sheets are sealed together to form pockets.
  • the pockets contain the infusible substance.
  • Each pocket includes at least one thermoformed portion of the first sheet.
  • the first and second sheets can be conveniently sealed together around the perimeter of the thermoformed portion of the first sheet.
  • the pockets comprise a thermoformed portion of the first sheet sealed together with a non-thermoformed portion of the second sheet (i.e. the portion of the second sheet is essentially flat).
  • each pocket includes a thermoformed portion of the first sheet and a thermoformed portion of the second sheet.
  • first and second sheets can be conveniently sealed together around the perimeter of the thermoformed portions.
  • Sealing may be achieved by any suitable method known in the art. Since the process necessarily involves thermoplastic material heat-sealing is particularly preferred. Alternatively, sealing the first and second sheets together may be achieved by other methods. For example, ultrasonic sealing allows the seal to be very narrow, which can improve the appearance of the infusion packet.
  • a sixth step of the process involves severing the pockets at the seals to form infusion packets.
  • Each infusion packet has a chamber containing the infusible substance. It should be noted that this step is not necessarily performed subsequently to the fifth step of sealing, and in a preferred embodiment, the sealing and severing steps of the process can be performed simultaneously.
  • the sheet of thermoplastic material will be very thin. Prior to being thermoformed, it is preferred that the sheet of thermoplastic material has an average thickness of less than 1.0 mm, more preferably less than 0.5 mm, still more preferably less than 0.2 mm, most preferably from 0.01 to 0.1 mm.
  • thermoforming may be carried out by any suitable means known in the art.
  • the infusion packet produced by the process is porous, it is impractical to use air pressure to thermoform the sheet of thermoplastic material. Therefore, it is preferred that the sheet is thermoformed using a mould, more preferably by pressing a male former into the sheet.
  • thermoplastic material As the sheet of thermoplastic material is relatively thin, with a low capacity to store heat, it is preferred to heat the mould rather than the material.
  • thermoforming comprises the steps of bringing portions of the sheet of thermoplastic material at a temperature below that required for thermoforming into contact with a mould at a temperature above that of a thermoforming temperature of the thermoplastic material, pressing the mould into contact with the thermoplastic material, the contact between mould and thermoplastic material causing heat to transfer from the mould to the thermoplastic material and raising the thermoplastic material to a thermoformable temperature; such pressing causing thermoforming of the thermoplastic material to conform to the shape of the mould.
  • thermoforming begins.
  • thermoplastic material has a low capacity to store heat, it will rapidly heat up once it comes into contact with the heated mould.
  • this method takes the potential disadvantage of low heat capacity and utilises this feature, resulting in effective thermoforming of the thermoplastic material.
  • the temperature of thermoforming is sufficient to allow the thermoplastic material to deform under thermoforming stresses. Therefore, the temperature of the mould is preferably at least 60° C., more preferably at least 70° C. In order to ensure that the infusion packets produced by this process are porous, the thermoplastic material should not be exposed to temperatures which cause the perforations to close. Thus the temperature of the mould is preferably less than 150° C., more preferably less than 125° C., most preferably less than 100° C.
  • the invention in a second aspect, relates to an infusion packet comprising a chamber that contains an infusible substance, wherein the packet comprises material that has been formed into a three-dimensional shape by thermoforming a thermoplastic polymer film having at least one embossed surface such that the thermoformed thermoplastic polymer film is porous.
  • FIG. 1 is a schematic representation of an embodiment of an apparatus that is suitable for carrying out a process according to the present invention.
  • FIG. 2 is a schematic representation of the apparatus shown in FIG. 1 during execution of a process according to the present invention.
  • FIG. 1 shows a first sheet of thermoplastic material 2 .
  • the thermoplastic material is a film of high-density polyethylene which is embossed on one surface.
  • the embossed film has 60 features per 25 mm.
  • the film is clamped in place by upper clamps 4 and lower clamps 6 .
  • the film is at ambient temperature.
  • a male former 8 Positioned above the embossed film is a male former 8 , at a temperature of 70° C.
  • the male former 8 moves downwards to come into contact with the first sheet 2 . As it makes contact, the portion of the first sheet 2 that comes into contact with the male former 8 rapidly heats up to 70° C.
  • the male former 8 continues to move downwards, heating and thermoforming the first sheet 2 simultaneously, until the male former 8 is in the position shown in FIG. 2 .
  • portions of the embossed polymer file i.e. those in contact with the male former
  • the male former 8 retracts and the first sheet 2 rapidly cools and sets.
  • the formed portions of the first sheet are now porous, and hence permeable to aqueous liquids, due to the holes introduced during thermoforming.
  • An infusible substance can subsequently be dosed into the thermoformed portion of the first sheet, and a second sheet of material used to seal the infusible material within a chamber.
  • This second sheet can be a substantially planar sheet of material, or alternatively the second sheet can also have been thermoformed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Packages (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Tea And Coffee (AREA)
US14/412,238 2012-07-18 2013-06-19 Infusion packets and a process for their manufacture Abandoned US20150151902A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12176821 2012-07-18
EP12176821 2012-07-18
PCT/EP2013/062721 WO2014012731A1 (fr) 2012-07-18 2013-06-19 Paquets d'infusion et procédé pour leur fabrication

Publications (1)

Publication Number Publication Date
US20150151902A1 true US20150151902A1 (en) 2015-06-04

Family

ID=48699752

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Application Number Title Priority Date Filing Date
US14/412,238 Abandoned US20150151902A1 (en) 2012-07-18 2013-06-19 Infusion packets and a process for their manufacture

Country Status (9)

Country Link
US (1) US20150151902A1 (fr)
EP (1) EP2874796B1 (fr)
JP (1) JP6158326B2 (fr)
CN (1) CN104507661B (fr)
EA (1) EA028788B1 (fr)
ES (1) ES2556908T3 (fr)
IN (1) IN2014MN02521A (fr)
PL (1) PL2874796T3 (fr)
WO (1) WO2014012731A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US20140290184A1 (en) * 2011-12-05 2014-10-02 Tiremo Inc. Method for manufacturing stick-type tea bag
WO2019012502A3 (fr) * 2017-07-14 2019-02-28 3M Innovative Properties Company Ensemble de distribution de fluide pour pistolet de pulvérisation

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Publication number Priority date Publication date Assignee Title
ITUB20152711A1 (it) * 2015-08-05 2017-02-05 Ima Spa Sacchetto - filtro per prodotti da infusione e metodo per la realizzazione del sacchetto - filtro.
CN112849492A (zh) * 2021-01-14 2021-05-28 王骏桃 一种新型片状滤袋固体饮料的包装方法
CN114053778B (zh) * 2021-12-01 2023-01-03 山西小牛娃食品有限公司 一种压榨机用固液分离过滤装置

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EA028788B1 (ru) 2017-12-29
ES2556908T3 (es) 2016-01-20
PL2874796T3 (pl) 2016-04-29
CN104507661A (zh) 2015-04-08
EP2874796B1 (fr) 2015-10-21
EA201492107A1 (ru) 2015-05-29
JP2015524775A (ja) 2015-08-27
IN2014MN02521A (fr) 2015-07-17
WO2014012731A1 (fr) 2014-01-23
JP6158326B2 (ja) 2017-07-05
EP2874796A1 (fr) 2015-05-27

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