EP3081693A1 - Verfahren zur herstellung von deckeln aus cellulosefasern für behälter - Google Patents

Verfahren zur herstellung von deckeln aus cellulosefasern für behälter Download PDF

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Publication number
EP3081693A1
EP3081693A1 EP15001100.5A EP15001100A EP3081693A1 EP 3081693 A1 EP3081693 A1 EP 3081693A1 EP 15001100 A EP15001100 A EP 15001100A EP 3081693 A1 EP3081693 A1 EP 3081693A1
Authority
EP
European Patent Office
Prior art keywords
cavities
deformable material
blow mould
shape
mould
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Withdrawn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
EP15001100.5A
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English (en)
French (fr)
Inventor
Fridrik Ragnar JONSSON
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.)
Emery Silfurtun Inc
Original Assignee
Emery Silfurtun Inc
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 Emery Silfurtun Inc filed Critical Emery Silfurtun Inc
Priority to EP15001100.5A priority Critical patent/EP3081693A1/de
Publication of EP3081693A1 publication Critical patent/EP3081693A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Definitions

  • the present invention relates to a method and an apparatus for producing lids from cellulose fibers for containers.
  • Lids for containers are well-known in the beverage container industry, e.g. most coffee shops in the world offer a take away service where a customer receives his coffee in a container, e.g. a paper cup, with a lid on top of the cup for sealing the opening of the container.
  • a container e.g. a paper cup
  • lids e.g. lids with movable closing flap as disclosed in US. Pat. No. 4,579,245 or a lid having a movable cover for the opening as disclosed in U.S. Pat. No. 4,790.444 .
  • lids used today are single-use lids and are typically made of plastic material, where after use the lids are typically end up as a waste material.
  • lids for containers that provide excellent sealing between the lids and the containers and that at the same time are fully recyclable and that may be produced at a mass production level.
  • lids that have similar or the same appearance as prior art lids that are typically made of plastic material.
  • the invention preferably seeks to mitigate, alleviate or eliminate one or more of the above mentioned disadvantages singly or in any combination.
  • a method is provided of producing lids for containers from cellulose fibers, comprising:
  • the deformable material will impact on the inner side of the cavities of the blow mould with such a pressure that the deformable material will press the wet moulded products at all the surface and surface spots/areas on the inner side of the cavities, such as all types of protrusions, boundaries etc.
  • all kinds of shapes on the outside of the lids may be done produced, e.g. any types of outwardly protruding parts such as mounting portions on the side wall of the lids that connect the lid to the containers in a manner that seals the lid on the container can be produced almost instantly.
  • the deformable material may be at a room temperature during this, i.e. there may be no need to heat it up to a higher temperature during the production of the disposable containers.
  • the deformable material may also be pre-heated to a given operating temperature during this process.
  • a single drying and shaping step is provided to produce the lids at a mass production level within few seconds time.
  • the deformable material may be made of any type of material that preferably has high elasticity such as, but not limited to, latex, rubber, or any type of deformable plastic material having sufficient elasticity.
  • the thickness of the deformable material may also be adapted to the type of products being produced, and may e.g. vary from being a millimeter or even less thick up to few millimeters thick.
  • ventilation openings may be understood as any type access channels, access slits, or drainage channels for the moisture and/or the liquid in the wet moulded products, that may have any type of cross sectional shape, e.g. cylindrical, rectangular, elliptical etc. that interconnect the inside and the outside of the blow mould.
  • the diameter of these ventilation holes/ventilation openings may have a dimension ranging from 1mm to micrometer range such as 50 ⁇ m.
  • the cellulose fibers is a plant based cellulose.
  • the plant based cellulose is bagasse produced from sugarcane. Bagasse is 100% biodegradable and compostable and a bi product of sugar cane fiber which is left after the juice has been extracted from the sugar cane, but hundred thousands of tons of bagasse remains to be used yearly.
  • bagasse has become a very cheap product and thus the value of bagasse may be increased significantly and therefore a favorable option is provided for producing lids for containers using bagasse.
  • bagasse is annually renewable as opposed to trees that take 7 top 20 years to grow and is biodegradable as trees.
  • the lids will have at least the same strength as the lids being used today and similar if not the same appearance as lids that are e.g. made of plastic material.
  • the wet moulded products have a geometry essentially following the geometry of the interior of the plurality of cavities of the blow mould. The risk that the wet moulded product comes apart during production is reduced because the wet moulded products can be sensitive. Therefore, the better they fit into the cavities the more reliable will the production be.
  • the deformable material comprises plurality of lid like portions
  • the step of placing the deformable material adjacent to the plurality of cavities of the blow mould includes placing the plurality of lid like portions of the deformable material at least partly into the plurality of cavities
  • supplying the pressure on the deformable material into the shape of the plurality of cavities comprises supplying a pressure on the plurality of the lid like portions of the deformable material causing a simultaneous inflation of the lid like portions of the deformable material into the plurality of cavities of the blow mould.
  • the lid like portions may in one embodiment have a geometrical shape essentially following the geometry of the interior of the plurality of cavities of the blow mould.
  • each of the plurality of cavities comprise two or more portions, where while the lids are produced each of the two or more portions are in a closed position, where subsequent to the inflation of the deformable material into the shape of the plurality of cavities each of the two or more portions of the cavities are moved from the closed position to an opening position so as to facilitate the releasing of the produced lids from the cavities.
  • each of the cavities may be divided into two parts, preferably two identical parts. By dividing the cavities into such two or more portions it is possible to produce lids that have outwardly protruding side potions, e.g.
  • a mounting portions at the side of the lids that extends out from the sides of the lids where the mounting portions may depend from a lower edges of the side walls of the lids and are adapted for connecting the lids to the containers in a manner that seals the lids on the containers.
  • the operating temperature of the blow mould is in the range of 150-250°C, preferably in the range of 180-220°C.
  • the pressure supplied on the deformable material is in the range of 20-80bar, preferably between 30-70bar, more preferably between 40-60bar, most preferably around 50bar.
  • the method further comprises depositing a film on an inner surface of the produced lids, where the film comprises an aluminium oxide film, a silicon oxynitride film or a silicon oxide film.
  • a film comprises an aluminium oxide film, a silicon oxynitride film or a silicon oxide film.
  • Such films e.g. a silicon oxide film, provide a kind of a "nano-glass" films, which provides an environmentally favorable barrier needed for e.g. all types of paper cups such as coffee/tea paper cups between the beverages and the outer shell structure.
  • the wet moulded products of the pre-defined shape is provided by means of:
  • the resulting moulded product of the pre-defined shape of the cellulose fiber mould may subsequently be placed directly into the plurality of cavities of the blow mould.
  • the shape of the cellulose fiber mould is preferably substantially the same as the shape of the cavities of 6 the blow mould, such that the moulded products in wet form fit directly into the cavities of the blow mould.
  • the cellulose fiber mould also has a plurality of cellulose fiber mould cavities having substantially the same geometrical shape as the cavities of the blow mould It is thus possible to move the cellulose fiber mould, subsequent to removing the cellulose fiber mould from the cellulose fibers, towards and adjacent to the blow mould and release the moulded products in wet form directly into the cavities of the blow mould.
  • lid for a container adapted for holding a flowable substance, comprising:
  • an environmentally friendly lid is provided that is fully recyclable and that is produced from e.g. bagasse that is 100% biodegradable and compostable and a bi product of sugar cane fiber.
  • an apparatus for producing lids for containers from cellulose fibers, comprising:
  • the pressure mechanism comprises in one embodiment at least one nozzle or nozzle like part such as at least one thin steel rod or the like that is connected to high pressure gas source such as high pressurized air.
  • the at least one nozzle like part may be associated to a moving mechanism that places the nozzle like part automatically inside or above the deformable material distantly away from the blow mould.
  • the pressure mechanism and the flexible material may also be internally fixed in relation the each other within a housing, where the deformable material defines of side of the housing and another side of the housing may be a fixed material such as a steel plate, and where the pressure source may be comprised there between.
  • the at least one nozzle like part may be operated such that it blows e.g. highly pressurized gas into or onto the deformable material resulting in the simultaneous expansion of the wet moulded product into the shape of the blow mould.
  • one or more nozzles may be associated to each of the pre-defined shapes of the deformable material, such that plurality of localized pressures are supplied. If e.g. the deformable material has a plurality of lid like portions, the one or more nozzles are associated to each of these lid like portions.
  • the pressure source comprises a hydraulic pressure source where any type of liquid may be used as a pressure source for supplying a pressure on the deformable material into the shape of the blow mould.
  • each of the plurality of cavities comprise two or more portions, where each of the two or more portions are moveable by a moving system from a closing position where the lids are produced to an open position, where the moving system is operated in a way such that subsequent to the inflation of the deformable material into the shape of the plurality of cavities each of the two or more portions of the cavities are moved from the closed position to an opening position so as to facilitate the releasing of the produced lids from the cavities.
  • the blow mould comprises plurality of rows of blow moulds forming a matrix of cavities, and where each of the rows of cavities is defined by two identical semi-lid like cavity mould rows arranged opposite to each other, where each of the cavity mould rows are attached to a moving mechanism that is adapted to move them from a closed position to an open position, and vice verse, from an open position to a closing position.
  • a simple solution is provide for releasing multiple of ready lids simultaneously, but semi-lid like cavity mould rows may contain tens or hundreds of lids, instead of e.g. operating the each individual cavity separately.
  • Figure 1 shows a flow diagram of a method according to the present invention of producing lids for containers from cellulose fibers.
  • the cellulose fibers cellulose fibers may plant based cellulose, where the plant based cellulose may in one embodiment be bagasse produced from sugarcane.
  • a first step (S1) 101 wet moulded products made from the cellulose fibers is provided. It is not an essence of the present invention how the wet moulded products are provided, but as will be discussed in more details in relation to figures 2 , this may be done using vacuum forming techniques well known in the art, e.g. similar to those used for the formation of e.g. egg boxes.
  • a second step (S2) 103 the wet moulded products are placed into plurality of cavities of a blow mould, where the cavities define the shape of the lids to be produced and further have plurality of ventilation openings.
  • the blow mould is pro-heated to an operating temperature, which in one embodiment may be in the range of 150-250°C, preferably in the range of 180-220°C.
  • This step of placing the wet moulded products into the plurality of cavities of the blow mould may in one embodiment be a fully manual or semi manual process where on operator places the moulded products in wet state into the mould, or this may be a fully automatic process where e.g. a robotic arm and the like puts the moulded products in wet state it into the cavities of the blow mould.
  • the ventilation openings may have all kinds of geometry, having a hole like structure, slits, etc.
  • the wet moulded products have a geometrical shape essentially following the geometrical shape of the cavities of the blow mould, e.g. such that the wet moulded products may have a lid-like shape.
  • a deformable material is placed adjacent to or into the cavities of the blow mould containing the wet moulded products.
  • the deformable material may be a substantially flat film material or, as will be discussed in more details later, comprise plurality of portions each of which having e.g. a pocket like shape portions or a shape that e.g. substantially matches the shape of the cavities of the blow mould, e.g. have a lid-like shape.
  • the deformable material implemented may be any type of material having preferably high elasticity, e.g. a solid material that returns to its original shape and size after the forces deforming them, i.e. in this case the pressure, have been removed.
  • An example of such material is Latex, and any type of plastic materials, rubber and the like.
  • a pressure is supplied on the deformable material at the plurality of cavities.
  • This supplied pressure causes an inflation of the deformable material into the shape of the cavities while simultaneously pressing the wet moulded products into the shape of the cavities.
  • the plurality of ventilation openings act as an exit for the moisture in the wet moulded products out of the cavities.
  • the supplied pressure may in one embodiment be in the range of 20-80bar, preferably between 30-70bar, more preferably between 40-60bar, most preferably around 50bar.
  • the method according to the present invention may further comprise a further optional step (S5) 109 of depositing a film on an inner surface of the moulded products, where the film may comprise an aluminium oxide film, or a silicon oxynitride film or a silicon oxide film.
  • a film acts as a "nano-glass" film, which provides an environmentally favorable barrier and/or isolation.
  • Figure 2 shows a flowchart of one embodiment of providing the wet moulded products discussed in relation to figure 1 .
  • a cellulose fibers mould having a permeable moulding surface side is dipped into cellulose fibers, preferably plant based cellulose which is preferably bagasse produced from sugarcane.
  • a vacuum is applied to the inner side of the cellulose fibers mould to draw cellulose fibers through the permeable surface side leaving an outwardly or inwardly facing fiber mat on the permeable moulding surface side.
  • a third step (S3') 305 the cellulose fibers mould is removed from the cellulose fibers and subsequently the resulting wet moulded products are removed from the cellulose fibers mould.
  • This may e.g. be done by removing and placing the wet moulded products directly into the cavities of the blow mould as discussed in relation to figure 1 .
  • the cellulose fibers mould may be carried by a robotic arm that may e.g. place the cellulose fibers mould adjacent to the blow mould while keeping an under pressure of the blow mould preventing that the wet moulded products fall out of the cellulose fibers mould.
  • the pressure of the cellulose fibers mould may be released causing the wet moulded products to fall directly into the cavities.
  • Figures 3 and 4 depict a side view ( figure 3 ) and a perspective view ( figure 4 ) of an example of a lid for a container that is produced by the method according to the present invention, where the lid comprises a cover 301, a top wall 306, a side wall 302, a mounting portion 304 and a generally annual skirt 305, where the top wall, the side wall, the mounting portion and the annual skirt are a single integral part.
  • the cover 301 is adapted to span an openings of an upper portion of the container defined by an upper rim of the container having the side wall 302 depending from the a peripheral edge of the top wall 306, where the mounting portion 304 is depending from a lower edge 303 of the side wall 302.
  • the mounting portion 304 is adapted for connecting the lid 300 to the container in a manner that seals the lid 300 on the container so as to prevent leakage of the container content between the lid 300 and the when the lid is positioned on the container.
  • the annual skirt 305 is adapted to facilitate positioning the lid 300 on the container and to remove the lid 300 from the container.
  • Figure 5 depicts where the lid 300 shown in figure 3 and 4 has been connected to the container 501, which may e.g. be a container for a hot beverage such as coffee, tee etc.
  • Figure 6 depicts graphically one embodiment of the present invention of producing lids from cellulose fibers.
  • a female blow mould 601 comprising plurality of lid-like cavities 602.
  • the female blow mould is typically, during use, preheated to an operating temperature such as, but not limited to, 180-220°C, where the plurality of lid-like cavities 602 have ventilation openings (not shown here).
  • moulded products in wet state are provided where the moulded products preferably have a lid-like shape or a shape that essentially follows the shape of the cavities 602. This may be done manually, semi manually or fully automatically as discussed previously, where e.g. the moulded products in wet state may be released from a cellulose fibers mould (not shown) directly into the cavities 602 of the blow mould 601.
  • a deformable material 603 comprising plurality of lid-like portions 604 having a shape similar to the shape of the cup like or pocket like cavities 602. Shown is also an upper coverage 605, but the deformable material 603 and this upper coverage may me a single unit. As will be discussed later, plurality of pressure means such as plurality of nozzles may be provided within an interior between the deformable material 603 and this upper coverage 605.
  • the movement of the deformable material 604 having the lid-like portions 604 and the upper coverage may be operated by a robotic arm or system.
  • each of the plurality of cavities may comprise two or more portions, preferably two identical portions, which when put together form the cavities defining the shape of the lids.
  • each of the three rows of cavities shown here may be formed by two moulds of three semi-lid mould like cavities arranged opposite to each other, where each of these are attached to a moving mechanism that is adapted to move the each of the three rows of cavities (the number of raws can of course be more or less than three) together to a closing position as shown here, or to an open position as will be discussed in more details later in relation to figure 7 .
  • Figures 7a-g depicts a cross sectional view of figure 6 showing only two of the three rows of cavities. The number of rows may me be more or less than three as shown in figure 6 .
  • Each of the cavities is further provided with ventilation openings 704 for providing an access for moisture/liquid out of the cavities to the surroundings. This will be discussed in more details later.
  • Figure 7a shows where the wet moulded products (701a,b) made from the cellulose fibers are released as indicated by an arrow 701 from a cellulose fibers mould (not shown) into the cavities of the blow mould 602.
  • the left side 602a and the right side 602b define one row of cavities as shown in figure 6 and are preferably a single piece, respectively. The same applies for the left and right side of the cavities 602c,d.
  • These semi-lid like cavities are attached to a moving system 710 that may be operated by a control unit (not shown) that operates the cavities from being in an open position to a closing position (as shown in figure 6 ), and vice versa.
  • the semi-lid like cavities may be attached to the moving system for enabling this back and for movement of the left and right side of the cavities for the three rows of cavities.
  • the cavities when releasing the wet moulded products (701a,b) into the blow cavities 602 of the blow mould, the cavities may be in an open position as shown here.
  • Figure 7b shows where subsequent to releasing the wet moulded products in the cavities the cavities are moved from the open position to a closing position as indicated by arrows 709.
  • FIG. 7e depicts where the plurality of lid-like portions 704 of the flexible material is placed into the wet moulded products.
  • each of the lid-like portions 704 is associated with nozzles 706 that are connected to a pressure mechanism 705 (not shown).
  • Figure 7d depicts where pressure is supplied by the pressure mechanism through the nozzles causing a simultaneous inflation of the deformable material into the shape of the plurality of cavities thereby pressing the wet moulded products into the shape of the cavities as indicated by arrows 708.
  • the blow mould is pre-heated to an operation temperature, e.g. between 180-220°C.
  • an operation temperature e.g. between 180-220°C.
  • supplying a pressure of e.g. 40-60bar on the deformable material into the shape of the cavities of the blow mould, while the moulded products are in wet state the thermal contact between the moulded products in wet state and the cavities is increased.
  • This increases the energy transfer from the cavities into the moulded product in wet state, which surprisingly leads to an almost instant evaporation of the moisture from the moulded product through the ventilation openings 704 of the cavities of the blow mould, turning them into a shell like structure defining the shape of the lids as shown in figure 7e .
  • Figure 7f shows where the blow mould are moved from the closing position to the opening position for releasing the lids out of the cavities.
  • the blow mould may first (not shown here) be rotated 180° to facilitate the releasing of the lids out of the blow mould
  • the blow mould may be cooled down before releasing the resulting lids out of the cavities of the blow mould.
  • Figure 7g shows the resulting lids, but tens, hundreds or thousands of such 100% environmentally friendly lids may be produced that are fully recyclable.
  • FIG 8 shows an apparatus 800 according to the present invention for producing lids for containers from cellulose fibers, comprising a moulding mechanism (M_M) 801 for providing plurality of wet moulded products of a pre-defined shape.
  • the moulding mechanism may e.g. comprise a robotic arm attached/mounted to a cellulose fibers mould (not shown) discussed in relation to figure 2 .
  • the apparatus 800 further comprises means for placing (M_P) 802, which may be the above mentioned robotic arm, the wet moulded products into plurality of cavities (see e.g. 602 in figure 6 ) of a blow mould (e.g. 601 in figure 6 ), where the blow mould is pre-heated to an operating temperature as e.g.
  • each of the plurality of cavities of the blow mould comprising plurality of ventilation openings.
  • the apparatus further comprises means for placing (M_P') 803 a deformable material adjacent to the plurality of cavities of the blow mould, but this may e.g. be done by the above mentioned robotic arm, and a pressure mechanism (P_M) 804 for supplying a pressure on the deformable material at the plurality of cavities of the blow mould.
  • the pressure causes a simultaneous inflation of the deformable material into the shape of the plurality of cavities thereby pressing the wet moulded product into the shape of the cavities, the plurality of ventilation openings acting as an exit for the moisture in the wet moulded products out of the cavities.
  • the pressure means may as an example be the one discussed in relation to figure 7 .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP15001100.5A 2015-04-16 2015-04-16 Verfahren zur herstellung von deckeln aus cellulosefasern für behälter Withdrawn EP3081693A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15001100.5A EP3081693A1 (de) 2015-04-16 2015-04-16 Verfahren zur herstellung von deckeln aus cellulosefasern für behälter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15001100.5A EP3081693A1 (de) 2015-04-16 2015-04-16 Verfahren zur herstellung von deckeln aus cellulosefasern für behälter

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EP3081693A1 true EP3081693A1 (de) 2016-10-19

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EP15001100.5A Withdrawn EP3081693A1 (de) 2015-04-16 2015-04-16 Verfahren zur herstellung von deckeln aus cellulosefasern für behälter

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108425292A (zh) * 2018-04-24 2018-08-21 吴刚 一种缓冲型纸浆模塑制品的制备方法
JP2022127184A (ja) * 2021-02-19 2022-08-31 王子ホールディングス株式会社 蓋体
WO2024132232A1 (de) * 2022-12-20 2024-06-27 Krones Ag Verfahren und vorrichtung zum herstellen eines fasern umfassenden behälters, radial elastischer, fasern umfassender endlosschlauch und fasern umfassender behälter
WO2025040608A1 (en) * 2023-08-21 2025-02-27 Societe Des Produits Nestle S.A. Moulded pulp article

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579245A (en) 1985-06-10 1986-04-01 Narushko Suzanne B Disposable leakproof container lids
US4790444A (en) 1986-11-27 1988-12-13 Terzi Stampi S.n.c.di Dario Terzi & C. Cup-cap combination for soft drink cans
WO2010124300A1 (en) * 2009-04-24 2010-10-28 Seanet Development, Inc. Processes for molding pulp paper containers and lids
WO2013192260A1 (en) * 2012-06-19 2013-12-27 Pepsico, Inc. Method for making molded fiber bottles
WO2015056276A1 (en) * 2013-10-18 2015-04-23 Emery Silfurtun Inc. A method and an apparatus for producing disposable products from cellulose fibers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579245A (en) 1985-06-10 1986-04-01 Narushko Suzanne B Disposable leakproof container lids
US4790444A (en) 1986-11-27 1988-12-13 Terzi Stampi S.n.c.di Dario Terzi & C. Cup-cap combination for soft drink cans
WO2010124300A1 (en) * 2009-04-24 2010-10-28 Seanet Development, Inc. Processes for molding pulp paper containers and lids
WO2013192260A1 (en) * 2012-06-19 2013-12-27 Pepsico, Inc. Method for making molded fiber bottles
WO2015056276A1 (en) * 2013-10-18 2015-04-23 Emery Silfurtun Inc. A method and an apparatus for producing disposable products from cellulose fibers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108425292A (zh) * 2018-04-24 2018-08-21 吴刚 一种缓冲型纸浆模塑制品的制备方法
JP2022127184A (ja) * 2021-02-19 2022-08-31 王子ホールディングス株式会社 蓋体
WO2024132232A1 (de) * 2022-12-20 2024-06-27 Krones Ag Verfahren und vorrichtung zum herstellen eines fasern umfassenden behälters, radial elastischer, fasern umfassender endlosschlauch und fasern umfassender behälter
WO2025040608A1 (en) * 2023-08-21 2025-02-27 Societe Des Produits Nestle S.A. Moulded pulp article

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