DK202100028Y3 - Biodegradable pulp bottle - Google Patents

Abstract

The invention relates to a set of parts for producing a biodegradable disposable package (5), which set comprises a first container part (51) of a first fibrous mass material and a second container part (52) of a second fibrous mass material, the first container part comprising a wall section (512 ) enclosing a product space having a cross-sectional area, the wall section (512) extending along an axial direction perpendicular to the cross-sectional area, between a first and a second axially spaced end portion of the first container portion (51). The set is further adapted to join the second end portion of the first container part (51) to the second container part (52) so that the first and the container part (51, 52) are permanently connected to each other to form a package.

Description

DK 202100028 Y3 1 Technical area The production concerns a tight-fitting packaging which is biodegradable.

Background There is a general desire to make greater use of biodegradable packaging in the distribution of various products, such as food, beverages and other household items.

However, products that are moist and / or sensitive to e.g. oxidation, a particular problem with the use of pulp-based packaging. There is also a particular problem associated with packaging food, or perhaps primarily beverages that are under pressure, such as carbonated beverages.

Furthermore, it is desirable that the manufacturing costs of producing the packaging be low. It is also desirable that the packaging be easily adapted to the packaging process of the product to be enclosed in the packaging in order to achieve an efficient packaging process.

Summary It is therefore an object of the present invention to provide a package which can be manufactured at low cost and which overcomes at least some of the present problems of the use of pulp-based packages.

The production is defined by the associated independent requirements. Embodiments are presented in the accompanying dependent claims and in the following description and drawings.

According to a first aspect, there is provided a method of making a biodegradable disposable package, the method comprising forming a first container portion from a first fibrous pulp material and forming a second container portion from a second fibrous pulp material, the first container portion comprising a wall section which surrounds a product space exhibiting a cross-sectional area, the wall section extending along an axial direction perpendicular to the cross-sectional area, between a first and a second axially spaced end portion of the first container portion. The method further comprises joining the second end portion of the first container part with the second container part so that the first and the second container part are permanently attached to each other to form a package.

DK 202100028 Y3 2 “Disposable packaging” means that the manufacturing costs of the packaging are sufficiently low that the packaging can be disposed of once after use.

The first and second fibrous mass materials may be the same or different fibrous pulp material. Fibrous materials are well known and available. Typically, the application is based on a slurry in water, by immersion or spraying.

By "fastening permanently" is meant that the fastening provided between the two parts is permanent, ie the two parts cannot be separated unless the packaging is broken.

The packaging is designed to be filled with a content in use. The first container part can be filled with a content before the second container part is permanently attached. Alternatively, the second container part can be filled with a content before the first container part is attached. In this way, the filling of the package can be achieved faster than when the filling takes place through a top opening in a package. As a result, the user of the package can achieve a more efficient manufacturing process through the possibility of filling the package with a content before the connection of the two parts with each other.

Alternatively, the first and second container parts can also, if desired, be connected before filling, where the contents are filled through the top opening of the package.

The joining may comprise attaching an edge wall in the second container part to the wall of the first container part.

The joining can be achieved between a radially outwardly facing surface of the edge wall and a radially inwardly facing surface of the wall of the first container part.

Alternatively, the joining can be achieved between a radially inwardly facing surface of the edge wall and a radially outwardly facing surface of the wall of the first container part.

The second container part can be designed so as to have a central section and an edge section surrounding the central section, the edge section comprising an edge wall which extends at an angle relative to the axial direction corresponding to the angle of the first container wall at the other end portion thereof.

The central section may consist essentially of a bottom part, which may be flat or curved, and which at its periphery merges into the edge section. The curved bottom part may be designed so that the inwardly facing surface of the bottom part, as considered when attached to the first container part, is con-

DK 202100028 Y3 3 wax or concave.

The joining of the first container part and the second container part can be achieved between a radially outwardly facing surface of the edge wall and a radially inwardly facing surface of the wall of the first container part or between a radially inwardly facing surface of the edge wall and a radially outwardly facing surface of the first container part wall.

The edge wall may extend at an angle to the axial direction which is greater than 0 degrees and less than 90 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees.

The edge wall may extend at a first angle relative to the axial direction, and the wall of the first container part at the second end portion thereof may extend at a second angle relative to the axial direction, the first and second angles being able to correspond so that the angles fit together within + 0-2 degrees, preferably within + 0-1 degrees, more preferably within + 0-0.5 degrees.

As a result, the second end portion of the first container portion and the second container portion can be formed by concept mating. With such a concept pairing, it is possible to provide an improved fiber-mass-based packaging, which can also be used for products which are moist and / or which are sensitive to e.g. oxidation, in particular for food packaging, or perhaps primarily under pressure beverages, such as carbonated beverages.

The first container part may be designed so that the first end portion prior to joining forms a closed end and the second end portion forms an open end.

Alternatively, the first container portion may be formed so that the first end portion prior to joining forms an open end and the second end portion forms an open end.

Consequently, the first container part can be designed such that the first end section prior to joining is closed or open. Depending on the filling method, it may be desirable for the first end section to be closed, for example when the first container part is filled with a contents before the second container part is attached. Alternatively, it may be desirable for the first end portion to be open, for example when the first and second container portions are secured prior to filling, with the contents being filled through the opening in the first end portion.

The closed end may comprise a portion of weakened fibrous pulp material adapted to be opened by a consumer of the package contained in the package.

DK 202100028 Y3 4 product. Alternatively, the first end portion may be closed with a sealing strip of a film material. The sealing strip is preferably made of a biodegradable material, preferably cellophane, but may also be made of other bioplastic material. The film acts as an extra sealing layer, which is designed to be peeled off by a consumer of the product included in the packaging.

The wall section of the first container part may comprise at least one radial step formation.

The step formation in the wall section forms a recoil where the second container part can be fitted when the first and the second container part are fastened to each other. The step formation also imparts a strong bottom to the package, which helps to prevent deformation of the package when it is filled with a content. Furthermore, it breaks the hydrostatic pressure on the seal between the first and the second container part.

The step formation may be located within a section of the wall section which is closest to the second end section, and the section preferably corresponds to 50% of an axial extent of the wall section, preferably 33% and more preferably 25%.

The step formation may be spaced from the second end portion corresponding to a total axial length of a joint surface of the second container portion.

By "a joining surface of the second container part" is meant the surface of the edge wall of the second container part which is attached to the wall of the first container part.

The joining of the second end portion of the first container part to the second container part may comprise causing the step formation to appear as an axial constraint for the second between the edge wall and the wall of the first container part.

The joining of the second end portion of the first container part to the second container part can be achieved by a relative movement of the first and the second part along the axial direction.

The second container part may comprise a wall section which extends axially between a bottom and a transition to the edge wall, preferably with an axial distance which is greater than the axial length of the edge wall.

The second container part can thus enclose a space which can form part of the product space. In one embodiment, the second part may have a greater axial length than the first container part. Alternatively, the first container part may have a greater axial length than the second container part.

The method may further comprise a container closure member and forming the first end portion of the first container member in such a manner that the container closure member and the first container member can be removably attached to each other so that the package is sealed when the members are attached.

The container closure part may be a lid, cap, stopper, tap, etc. It is preferably formed of a fibrous pulp material, but may also be of other material such as wood, polylactic acid or bioplastic material.

By "detachably fastened" is meant that the established fastening between the two parts is not permanent, ie. the two parts can be separated without breaking the packaging.

The method may further comprise securely attaching the container closure member to the first end portion of the container member.

The formation of the container parts may comprise applying material to a molding surface of a respective first mold section of a respective first pressing instrument and subsequently pressing the material between the respective first mold section and a respective second mold section of the first pressing instrument.

The formation of the container parts may further comprise transferring the pressed material to a respective molding surface of a respective first mold section of a respective second pressing instrument and subsequently pressing the material between the respective first mold section and a respective second mold section of the respective other press instrument.

The formation of the container parts may further comprise transferring the pressed material to a respective molding surface of a respective first mold section of a respective third press instrument and subsequently pressing the material between the respective first mold section and a respective second mold section of the respective third press instrument.

The mold parts can be joined by a relative movement of the mold parts along the axial direction.

The formation of the container part may comprise at least one of drawing vacuum or applying heat through at least one of the respective first and second mold parts.

The formation of the container parts may further comprise depositing the material on the respective forming surface of the respective first pressing instrument or on a respective separate forming instrument and subsequently transferring the material to the respective first pressing instrument.

DK 202100028 Y3 6 The deposition can be achieved by lowering the forming surface in a slurry, by spraying or rolling a slurry on the forming surface or by preforming the material in a collection tool and transferring it to the forming surface.

The formation of the container parts from a fibrous material can be done with an initial water content in a fibrous slurry layer of about 70-90% by weight, with an initial water content in the fibrous slurry layer of about 45-65%, typically about 50-60% by weight, or with a initial water content in the pulp slurry layer of about 25-45% by weight, preferably about 30-40% by weight.

The final water content may be below about 5% by weight, preferably below about 1% by weight.

The method may further comprise applying a gas and / or liquid impervious film and / or a coating layer to a product space facing surface of the first and / or the second container part.

The gas- and / or liquid-impermeable film provides the package with a sealing layer that makes it possible to enclose a content, both solid, liquid and / or gaseous, in the package. The film can be attached by means of PVA (polyvinyl alcohol), an adhesive, etc. The adhesive is preferably biodegradable. The film may be a cellulose film, such as, for example, cellophane. The cellophane film is also biodegradable so that the entire packaging is biodegradable. The coating layer can be applied by spraying, dipping or pouring on the inner surface with / in a cellulose-based coating material.

The gas and / or liquid impervious film may be a cellulose film.

The method may further comprise attaching an inner container to the first end portion of the first container portion and / or to the second end portion of the second container portion and / or to an inwardly facing surface of the first and / or the second container portion.

In use, the inner container is enclosed by the packaging. The inner container provides the package with a sealing layer that makes it possible to enclose a content, both solid, liquid and / or gaseous, in the package.

The inner container may be in the form of a bag or purse. The inner container in the form of a bag or purse is preferably made of a recyclable or biodegradable material, preferably cellophane, but may also be made of other bioplastic material.

DK 202100028 Y3 7 Alternatively, the inner container may be a container formed of a glass material.

In addition, the inner container can be attached before or after attachment of the first and second container parts. The inner container can be attached to a top periphery of the first end portion of the first container portion.

Additionally or alternatively, it can be attached to a bottom periphery of the second container part. Additionally or alternatively, it may be attached in points or bands along the inwardly facing surface of the first and / or the second container part.

The inner container may be a flexible pouch formed of a biodegradable material.

Alternatively, the inner container may be a container formed of a glass material.

An inner container formed of glass is particularly useful for packaging intended for high pressure beverages.

According to another aspect, a set of parts is provided for producing a biodegradable disposable package, comprising a first container part formed of a first fibrous pulp material and a second container part formed of a second fibrous pulp material, the first container part comprising a wall section surrounding a product space, having a cross-sectional area, the wall section extending along an axial direction perpendicular to the cross-sectional area, between a first and a second axially spaced end portion of the first container portion. The second end portion of the first container part and the second container part are adapted to be permanently attached to each other in such a way that the two parts form a package.

By “disposable packaging” is meant that the manufacturing costs of the packaging are sufficiently low that the packaging can be disposed of after use once.

By "permanently fastened" is meant that the fastening provided between the two parts is permanent, ie. the two parts cannot be separated unless the packaging is broken.

The first and second fibrous mass materials may be the same or different fibrous pulp material.

The first end portion of the first container portion may form a closed end and the second end portion may form an open end.

The closed end may comprise a portion of weakened fibrous pulp material adapted to be opened by a consumer of the package contained in the package.

DK 202100028 Y3 8 product. Alternatively, the first end portion may be closed with a sealing strip of a film material. The sealing strip is preferably made of a biodegradable material, preferably cellophane, but may also be made of other bioplastic material. The film acts as an extra sealing layer, which is designed to be peeled off by a consumer of the product included in the packaging.

Alternatively, the first end portion of the first container portion may form an open end and the second end portion may form an open end.

The second end portion of the first container portion and the second container portion may provide respective joining surfaces that extend at corresponding angles to the axial direction.

The corresponding angles with respect to the axial direction may be greater than 0 degrees and less than 90 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees.

The corresponding angles can fit together within + 0-2 degrees, preferably within + 0-1 degrees, most preferably within + 0-0.5 degrees.

The second container portion may provide a central section and an edge section surrounding the central section, the edge section comprising an edge wall extending at an angle relative to the axial direction corresponding to the angle of the wall of the first container part at the second end section thereof.

The central section can essentially consist of a bottom part, which can be flat or curved and which at its periphery merges into the edge section. The curved bottom part may be designed so that the inwardly facing surface of the bottom part, as considered when attached to the first container part, is convex or concave.

The edge wall may extend at an angle to the axial direction greater than 0 degrees and less than 90 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees.

The edge wall may extend at a first angle relative to the axial direction, and the wall of the first container part at the second end portion thereof may extend at a second angle relative to the axial direction, the first and second angles being able to correspond so that the angles fit together within + 0-2 degrees, preferably within + 0-1 degrees, more preferably within + 0-0.5 degrees.

The second end portion of the first container portion and the second container portion may be adapted to be permanently attached to each other so that

A joint can be obtained between a radially outwardly facing surface of the edge wall and a radially inwardly facing surface of the wall of the first container part, or between a radially inwardly facing surface of the edge wall and a radially outwardly facing surface of the first container part wall.

The second container part may comprise a wall section which extends axially between a bottom and a transition to the edge wall, preferably with an axial distance which is greater than the axial length of the edge wall.

The second container section can thus enclose a space which can form part of the product space. In one embodiment, the second part may have a greater axial length than the first container part. Alternatively, the first container part may have a greater axial length than the second container part.

The wall section of the first container part may comprise at least one radial step formation. The step formation in the wall section forms a recoil where the second container part can be fitted when the first and the second container part are fastened to each other. The step formation imparts to the package a strong base which helps to prevent deformation of the package when it is filled with a content. In addition, it breaks the hydrostatic pressure on the seal between the first and the second container part.

The step formation may be located within a section of the wall section which is closest to the other end section, and the section preferably corresponds to 50% of an axial extent of the wall section, preferably 33%, and more preferably 25%.

The step formation may be located at a distance from the other end corresponding to an overall axial length of a joining surface of the second container part.

The step formation may form an axial boundary for the second wall edge and the first container part wall.

The first and the second container part can be joined in the axial direction.

The first and / or the second container part may have a gas and / or liquid impermeable film and / or a coating layer applied to an inwardly facing surface of the respective container part.

The gas and / or liquid impervious film imparts to the package a sealing layer which makes it possible to enclose a content, both solid, liquid and / or gaseous, in the package. The film may be attached by means of PVA, an adhesive, etc. The adhesive is preferably biodegradable. The film can

DK 202100028 Y3 10 be a cellulose film, such as for example cellophane. The cellophane film is also biodegradable and thus makes the entire packaging biodegradable. The coating layer can be applied by spraying, dipping or pouring the inner surface with / in a cellulose-based coating material. The gas and / or liquid impervious film may be a cellulose film.

The cross-sectional area of the first container part can increase in the axial direction from the first end section towards the second end section.

The first container part may, for example, be in the form of a bottle, comprising a bottle neck and a bottle body. Alternatively, the first container part may comprise a bottle neck and a section of a bottle body, the section of the bottle body may constitute 10-99.9% of the whole bottle body.

Alternatively, the cross-sectional area of the first container portion may be constant in the axial direction from the first end portion toward the second end portion.

The first container part may, for example, be in the form of a cylindrical can or jar.

The open end formed at the second end portion of the first container portion may have the largest cross-sectional area of the package. By designing the first container part in such a way that the open end, formed at the second end section of the first container part, has the largest cross-sectional area of the package, the filling of the package can be significantly improved in terms of efficiency, as faster filling becomes possible. provided that the first and second container parts are attached after filling.

The wall section of the first container part, which extends along the axial direction, may be rotationally symmetrical about the axis.

Alternatively, the wall portion of the first container portion extending along the axial direction may be non-rotationally symmetrical about the axis.

A section of the first and / or the second container part can be designed as a handle.

The first end portion of the first container portion may be adapted to receive a container closure member, the container closure portion being adapted to be removably attached to the first container portion in such a manner that it seals the package when attached.

The container closure part can be a lid, cap, stopper, tap, etc. It is preferably made of fibrous pulp material, but can also be of other material such as wood, polylactic acid or bioplastic material.

DK 202100028 Y3 11 By "removably attached" is meant that the established connection between the two parts is not permanent, ie. the two parts can be separated without breaking the packaging.

The set of parts may further comprise an inner container.

When in use, the inner container is enclosed by the packaging. The inner container provides the packaging with a sealing layer that makes it possible to enclose a content, both solid, liquid and / or gaseous, in the packaging.

The inner container may be in the form of a pouch or a purse. The inner container in the form of a bag or purse is preferably made of a recyclable or biodegradable material, preferably cellophane, but may also be made of other bioplastic material.

The inner container may be a flexible pouch formed of a biodegradable material.

Alternatively, the inner container may be a container formed of a glass material.

According to a third aspect, there is provided a set of parts for a biodegradable disposable package comprising the set of parts for a package as described above and a container closure member, the container closure member being adapted to be removably attached to the package in such a manner as to seal the package. when attached.

By "removably attached" is meant that the established connection between the two parts is not permanent, ie. the two parts can be separated without breaking the packaging.

The container closure part can be a lid, cap, stopper, tap, etc. It is preferably made of fibrous pulp material, but can also be of other material such as wood, polylactic acid or bioplastic material.

The container closure member may be made of a third fibrous pulp material.

The third fibrous material may be the same as the first and / or second fibrous material. Alternatively, it may be a different fibrous pulp material.

According to a fourth aspect, there is provided a method of packaging a product, comprising providing a set of parts as described above in connection with the second or third aspect, introducing the product into the first container part and joining the second container part to the first container part thus , that the product compartment is closed.

According to a fifth aspect, there is provided a biodegradable disposable package comprising a first container portion made of a first fibrous pulp material, a second container portion made of a second fibrous pulp material, the first container portion comprising a wall portion surrounding a product space and offering a cross-sectional area and wherein the wall portion extends along an axial direction perpendicular to the cross-sectional area between a first and a second axially spaced end portion of the first container portion, the second end portion of the first container portion and the second container portion being permanently joined together in such a manner, that the two parts form a package.

The second end portion of the first container portion and the second container portion may provide respective joining surfaces that extend at corresponding angles to the axial direction.

The corresponding angles with respect to the axial direction may be greater than 0 degrees and less than 90 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees.

The corresponding angles can fit together within + 0-2 degrees, preferably within + 0-1 degrees, most preferably within + 0-0.5 degrees.

The second container portion may provide a central section and an edge section surrounding the central section, the edge section comprising an edge wall extending at an angle relative to the axial direction corresponding to the angle of the wall of the first container part at the second end section thereof.

The edge wall may extend at an angle to the axial direction greater than 0 degrees and less than 90 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees.

The edge wall may extend at a first angle relative to the axial direction, and the wall of the first container part at the second end portion thereof may extend at a second angle relative to the axial direction, the first and second angles being able to correspond so that the angles fit together within H + 0-2 degrees, preferably within + 0-1 degrees, more preferably within + 0-0.5 degrees.

The joining can be achieved between a radially outwardly facing surface of the edge wall and a radially inwardly facing surface of the wall of the first container part, or between a radially inwardly facing surface of the edge wall and a radially outwardly facing surface of the wall of the first container part.

Such a package can be manufactured according to the method described

DK 202100028 Y3 13 above and from the set of parts described above. Brief Description of the Drawings Embodiments of the present invention will now be described, by way of example, with reference to the accompanying schematic figures, in which: FIG. 1a-1c schematically show a forming device.

FIG. 2 schematically shows a manufacturing process.

FIG. 3a-3e schematically show a first embodiment of the package in the form of a bottle.

FIG. 4a-4e schematically show another embodiment of the package in the form of a bottle.

FIG. 5a-5e schematically show a third embodiment of the package in the form of a bottle.

FIG. 6a-6e schematically show a fourth embodiment of the package in the form of a bottle.

FIG. 7a-7e schematically show a fifth embodiment of the package in the form of a bottle.

FIG. 8a-8e schematically show different embodiments of an inner container for different embodiments of the package in the form of a bottle.

Detailed description FIG. 1a schematically shows a collecting instrument 10 which is partially immersed in a container 1 containing a pulp slurry 2. The collecting instrument is mounted on an instrument holder 11 which, together with the collecting instrument, defines a vacuum chamber 12 which is connected to a pressure regulator P1. The pressure regulator may be capable of selectively generating an at least partial vacuum (ie an air pressure lower than the ambient air pressure) and / or an air pressure higher than the ambient air pressure.

While the collecting instrument is immersed in the fibrous mass 2, the pressure regulator P1 can form a vacuum, which causes the fibrous pulp fibers 3 to adhere to a product surface of the collecting instrument 10.

FIG. 1b schematically shows the collecting instrument 10 transferring the fibrous pulp fibers 3 to a transfer instrument 20. The transfer instrument may be connected to a second pressure regulator P2 which is capable of generating a vacuum or an air pressure. The transfer instrument may also be mounted on a transfer instrument holder 21 so as to define a vacuum chamber 22 which is connected to the transfer instrument.

DK 202100028 Y3 14 it to the second pressure regulator.

During the transfer of the fibrous pulp fibers 3 from the collecting instrument to the transfer instrument, an air pressure higher than the ambient pressure can be formed by the first pressure regulator P1 to cause the fibrous pulp fibers to detach from the collecting instrument.

Alternatively or as a supplement, a vacuum may be created by the second pressure regulator P2, which causes the fibrous pulp fibers to be received by the transfer instrument 20.

FIG. 1c schematically shows a press arrangement comprising a male press instrument 30 and a female press instrument 40. One or both press instruments may be mounted on a respective instrument holder 31, 41 and be connected to a respective vacuum chamber 32, 42. The vacuum chambers may each be connected to their pressure regulator P3. , P4.

One or both pressing instruments may be provided with a heating element 33, 43, driven by an energy supply E1, E2 and optionally regulated by a control unit C. The heating can be achieved by electric heating elements, hot air or liquid or induction.

The pressing instruments and their associated instrument holders can be movable relative to each other between an open position where a partially shaped fibrous pulp product can be inserted and a pressing position where the pressing instruments are forced against each other and thus the product presses 3 ”between the product surfaces of the respective instruments. 30, 40.

In the press position heat can be supplied by one or both heaters 33, 43.

During the pressing step, one or both pressure regulators P3, P4 can provide a vacuum to assist in the removal of water vapor from the product 3 ”.

Alternatively, one of the pressure regulators may provide a vacuum while the other provides a pressure higher than ambient pressure.

Optionally, hot air or steam can be introduced through the molds during the pressing process (Fig. 1c).

It is noted that two or more pressing steps can be used, e.g. to gradually shape all or part of the product 3 ”and / or to impart additional features to the product, such as coatings, embellishments and the like.

In one embodiment, steps are performed in accordance with what has been described with respect to Figures 1a, 1b and 1c.

Referring to FIG. 2, a manufacturing process must now be described.

In a first step 101, a fibrous slurry layer is provided, e.g.

DK 202100028 Y3 15 as described with reference to Figs. 1a, where a porous collecting instrument can be immersed in a fibrous pulp slurry, where vacuum is applied to a back side of the collecting instrument. Alternatively, the pulp slurry may be applied to the collection instrument by a coating operation such as spray coating.

The porous wall section of the collecting instrument may have a surface porosity of 40-75% with hole sizes of 0.1-0.7 mm in diameter, preferably 0.25-0.6 mm.

In a second step 102, the fibrous slurry layer is transferred from the collecting instrument to a first pressing instrument. The transfer can take place by means of the collecting instrument or by means of a separate transfer instrument, which may have a transfer instrument wall section which is porous. During the transfer step, a vacuum can be applied to the back of the transfer instrument wall so that the fibrous slurry layer is retained on the transfer instrument wall.

To release the fibrous slurry layer from the transfer instrument wall, it is possible to apply compressed air to the back of the transfer instrument wall instead.

Alternatively, the pulp slurry layer can be applied directly to a first press instrument. That is, the fibrous slurry layer can be formed directly on the first pressing instrument by applying the pulp slurry to the porous forming surface of the first pressing instrument. The pulp slurry layer can be applied directly to the first press instrument by immersing an instrument portion of the first press instrument, which presents a porous wall section, in a fibrous slurry, applying a negative pressure to the back of the porous wall section. Alternatively, the fibrous pulp slurry may be applied to the porous forming surface of the first press instrument by a coating operation such as spray coating.

In a third step 103, the pulp slurry layer may be pressed into the first press instrument, which may comprise a pair of mutually corresponding instrument parts, one of which may have a porous wall section which is in contact with the fibrous pulp slurry layer and through which a vacuum may be drawn.

In this first pressing step 103, a pressure lower than the ambient pressure is applied to the back of the porous wall section, resulting in a negative pressure on the back of the porous wall section, causing solvent gas phase moisture such as steam to be drawn through the instrument.

The porous wall portion of the first forming instrument may have one

DK 202100028 Y3 16 surface porosity of 40-75% with hole sizes of 0.1-0.7 mm, preferably 0.25-0.6 mm.

The pressure applied to the back of the porous wall section may be of the low or medium level vacuum magnitude. That is, a first pressure may be 200-900 mbara (millibar absolute), preferably 300-800 mbara.

The forming surface of the first mold can be heated to about 150-500 ° C, preferably 150-400 ° C, 200-500 ° C, 200-400 ° C or 200-300 ° C and in most cases 240-280 ° C. Typically, at least one mold surface that comes into contact with the fibrous pulp slurry layer can be heated. That is, one between the first and second mold parts can be heated.

A compressive pressure between the mold surfaces can be in the order of about 390-1570 kPa and in most cases 580-1170 kPa.

The pressing pressure can be applied during an initial pressing period of 0.1-4.0 seconds, preferably 0.5-2.0 seconds. In most setups, a pressing time in the order of 0.5-1.5 seconds will suffice, and often also 0.5-1 second.

Typically, an initial water content in the fibrous slurry layer in this step is 70-90% by weight, and after the pressing step has been completed, a final water content may be 45-65% by weight, typically about 50-60% by weight.

After the first pressing step 103, the pulp slurry layer, now with a substantial amount of its solvent removed, can be transferred 104 to another pressing instrument. The transfer 104 can be made in the same manner as the first transfer step 102 and with similar equipment. The second press instrument may be designed substantially as the first press instrument.

In a second pressing step 105, the fibrous slurry layer may be pressed into the second pressing instrument, which may comprise a pair of mutually corresponding instrument parts, one of which may have a porous wall section which comes into contact with the fibrous slurry layer and through which a vacuum may be drawn. In this second pressing step 105, a pressure lower than the ambient pressure is applied to a back of the porous wall section, resulting in a negative pressure on the back of the porous wall section, causing solvent humidity such as steam to be drawn through the instrument.

The porous wall section of the second forming instrument may have a surface porosity of 25-50% with hole sizes of 0.1-1.2 mm, preferably 0.25-1.0 mm.

In the second pressing step, the absolute pressure can be applied to the back of it

Porous molding surface of the second mold be 200-900 mbara, preferably 300-800 mbara, but always higher than in the first pressing step.

The forming surface of the second mold can be heated to about 110-500 ° C, preferably 110-400 ° C, 150-500 ° C, 150-400 ° C, 200-500 ° C, 200-400 ° C or 200-300 ° C and in most cases 240-280 ° C. Typically, all mold surfaces that form the second mold and are in contact with the fibrous pulp slurry layer can be heated.

A compressive pressure between the mold surfaces can be in the order of about 390-1570 kPa and in most cases 580-1170 kPa.

The press pressure can be applied during another press period of 0.1-4.0 seconds, preferably 0.5-2.0 seconds. In most setups, a pressing time in the order of 0.5-1.5 seconds will suffice, and often also 0.5-1 second.

Typically, an initial water content of the pulp slurry layer in this second pressing step is 45-65% by weight, typically 50-60% by weight. A final water content may be about 25-40% by weight, preferably about 30-35% by weight.

After the second pressing step 105, the pulp slurry layer, now with a substantial amount of its solvent removed, can be transferred 106 to a third pressing instrument. The transfer 106 can be performed in the same manner as the first transfer step 102 and / or the second transfer step 104 and with similar equipment. The third press instrument may be substantially similar to the first press instrument.

In a third pressing step 107, the fibrous slurry layer may be pressed into the third pressing instrument, which may comprise a pair of mutually corresponding instrument parts, one of which may have a porous wall section which is in contact with the fibrous slurry layer and through which a vacuum may be drawn. In this third pressing step 107, a pressure lower than the ambient pressure is applied to a back side of the porous wall section, resulting in a negative pressure on the back side of the porous wall section, causing solvent humidity such as steam to be drawn through the instrument.

The porous wall section of the third forming instrument may have a surface porosity of 25-50% with hole sizes of 0.1-1.2 mm, preferably 0.25-1.0 mm.

In the third pressing step, an absolute pressure applied to the back of the porous forming surface of the third mold may be 200-900 mbara, preferably 300-800 mbara, but always higher than in the second pressing step.

The forming surface of the third mold can be heated to about 100-400 ° C, preferably 100-300 ° C, 150-400 ° C, 150-300 ° C, 200-300 ° C or 200-280 ° C and in most cases 240-280 ° C. Typically, all mold surfaces that make up the third mold and are in contact with the fibrous pulp slurry layer can be heated.

A compressive pressure between the mold surfaces can be in the order of about 390-1570 kPa and in most cases 580-1170 kPa.

The pressing pressure can be applied during a third pressing period of 0.1-4.0 seconds, preferably 0.5-2.0 seconds. In most setups, a pressing time in the order of 0.5-1.5 seconds will suffice, and often also 0.5-1 second.

Typically, an initial water content in the pulp slurry layer in this third pressing step is 25-45% or 25-40% by weight, preferably about 30-40% or 30-35% by weight, and a final water content may be less than about 5% by weight, preferably less than about 1% by weight.

After the third pressing step 107, the pulp slurry layer, now with most of its solvent removed, can be transferred 108 out of the machine.

Optionally, additional steps, such as surface treatment, cutting or printing, can be performed on the thus substantially dry product. The product can then be packed, stored and transported.

It is noted that the third pressing step 107, and thus also its associated transfer step 106, is optional. Thus, the process can be terminated after the second pressing step with the execution step 108 immediately thereafter.

Thus, in the first pressing step, an initial water content in the fibrous slurry layer may be 70-90% by weight, and a final water content may be 25-50% by weight, preferably about 30-35% by weight.

In the second pressing step, an initial water content in the fibrous slurry layer may be about 25-50% by weight, preferably about 30-35% by weight, and a final water content may be below about 5% by weight, preferably below about 1% by weight.

According to the present invention, there is provided a sealed package 5 which is biodegradable, as well as a method of manufacturing such a package.

The package 5 according to the present invention may be in the form of a bottle, a can or a jar, etc. The package is arranged to contain a solid, liquid and / or gaseous content and can be used as packaging for various products such as, for example, body care products. , household products, food or beverages etc.

DK 202100028 Y3 19 FIG. 3-7 show different embodiments of a package 5 in the form of a bottle. As illustrated in FIG. 3-7, the package 5 may have different shapes, for example a cylindrical and symmetrical shape (see Figs. 3, 4 and 7) or a cylindrical and asymmetrical shape (see Figs. 5 and 6). It is to be understood, however, that the embodiments presented in the drawings are shown by way of example only and that other forms of packaging are possible.

The package comprises a first container part 51, a second container part 52 and a container closing part 53 (see Figs. 3b-7b, 3e-7e), which are adapted to be attached to each other so that together they form the package 5 (see Fig. 3a - 7a).

The first and second container parts 51, 52 are made of a first and a second fibrous mass material, preferably using the method described in connection with Figs. The container closure member 53 is preferably made of a third fibrous pulp material, preferably using the method described in connection with FIG. 2, but may also be of other material such as, for example, wood, polylactic acid or bioplastic material. The first, second and third pulp materials may be the same or different pulp materials.

The first container portion 51 comprises a wall section 512 which surrounds a product space and has a cross-sectional area. The wall section 512 extends along an axial direction perpendicular to the cross-sectional area, between a first end section and a second end section of the first container part arranged at an axially spaced distance.

51.

An open end is formed at the second end portion of the first container portion

51. A closed end is preferably formed at the first end portion of the first container portion 51. The closed end may comprise a portion of weakened fibrous pulp material (not shown), adapted to be opened by a consumer of the product enclosed in the package. . Alternatively, the first end portion may be closed with a sealing strip (not shown) of a film material. The sealing strip is preferably made of a biodegradable material, preferably cellophane, but may also be of other bioplastic material. The film acts as an extra sealing layer, which is adapted to be peeled off by a consumer of the product included in the packaging.

Alternatively, an open end is formed at the first end portion which can be sealed with a sealing strip and / or the container closure member 53.

FIG. 3a-7a further show that the first container part 51 is formed on one

DK 202100028 Y3 20 way that the cross-sectional area increases seen in the axial direction from the first end section towards the second end section. Although not shown, other embodiments are possible. For example, the cross-sectional area of the first container portion 51 may be constant in the axial direction from the first end portion toward the second end portion. In addition, the first container part 51 can be designed in such a way that the open end at the second end section of the first container part has the largest cross-sectional area in the package (see Figs. 3b-7b). Furthermore, the first end portion of the first container part 51 may be adapted to receive a container closing part 53. This is shown in Figs. 3d-7d, all of which show a view of the first end portion of the first container part 51 according to different embodiments of the package, and a corresponding container closing part 53.

The container closure part 53 can be a lid, cap, stopper, tap etc. and is adapted to be removably attached to the first container part 51 in such a way that it seals the package 5 when it is attached.

The second container portion 52 provides a central portion 523 and an edge portion surrounding the central portion 523 (see, for example, Figs. 3c-6c). The central portion 523 may consist essentially of a bottom portion, which may be planar or curved. The curved bottom part may be designed so that the inwardly facing surface of the bottom part, as viewed when attached to the first container part, is convex (see Fig. 8e) or concave (see Figs. 8a-8d). The central portion 523 merges into the edge portion at the periphery of the central portion (see, for example, Figs. 3e-6e). The edge portion comprises an edge wall 522 which extends at an angle relative to the axial direction.

The angle can be greater than 0 degrees and less than 90 degrees relative to the axial direction. Preferably, the angle is greater than 0 degrees and less than 15 degrees relative to the axial direction. More preferably, the angle is 3-5 degrees relative to the axial direction.

The extent of the edge wall 522 corresponds to the extent of the wall 512 of the first container part at the second end portion thereof (see Figs. 3c-6c).

Accordingly, the edge wall 522 may extend at a first angle relative to the axial direction, and the wall of the first container portion 512 at the second end portion thereof may extend at a second angle relative to the axial direction, the first and second angles corresponding to each other.

The angles may correspond so that the angles fit together within + 0-2 degrees, preferably within + 0-1 degrees, more preferably within + 0-0.5 degrees.

DK 202100028 Y3 21 The second container part 52 may further comprise a wall section 524 as shown in Figs. 7b and 7e. The wall section 524 then extends axially between the bottom part 523 and the edge wall 522 (see Fig. 7b). The wall section 524 preferably extends at an axial distance which is greater than an axial length of the edge wall 522.

Accordingly, in an embodiment of the invention, the first container part 51 may enclose a space which forms the entire product space (see for example Figs. 3b-6b), the second container part 52 forming the bottom of the package. Thus, the first container part 51 may have a greater axial length than the second container part 52. Alternatively, the second container part 52 may enclose a space which forms part of the product space (see Fig. 7b). Thus, the second container part 52 may have a larger axial length than the first container part 51.

The second end section of the first container part 51 and the second container part 52 offer respective joining surfaces which extend at corresponding angles with respect to the axial direction (see Fig. 3 € -7c).

The corresponding angles can be greater than 0 degrees and less than 90 degrees relative to the axial direction. Preferably, the corresponding angles are greater than 0 degrees and less than 15 degrees relative to the axial direction. More preferably, the corresponding angles are 3-5 degrees relative to the axial direction.

The corresponding angles can fit together within £ 0-2 degrees. Preferably, the corresponding angles fit within + 0-1 degrees. More preferably, the corresponding angles fit within + 0-0.5 degrees.

Accordingly, the first and second container parts 51, 52 are adapted to be permanently attached to each other in such a way that the two parts form a package. FIG. 3c-6c show the second container part 52 attached to the open end at the second end portion of the first container part 51. The two parts may be attached to each other by means of an adhesive.

The wall section 512 in the first container part may comprise at least one radial step formation 513 (see Figs. 4c, 6 ¢ and 7c). The step formation is located within a section of the wall section 512 which is closest to the other end section. The section of the wall section located closest to the second end section may correspond to 50% of an axial extent of the wall section, preferably 33% and more preferably 25%. The step formation 513 forms an axial boundary for the second of the edge wall 522 and the wall 512 of the first container part. The step formation thereby forms a spring back, where the second container part 52 can be fitted when the first and the second container part 51, 52 are connected.

DK 202100028 Y3 22 In addition, the first and / or second container part 51, 52 may be provided with, or designed to form, user-friendly properties of a package, such as for instance a handle. FIG. 5a and 6a show a package in which a part of the first container part 51 is designed as a handle 7.

The first and / or the second container part 51, 52 may furthermore have a gas and / or liquid impermeable film (not shown) and / or a coating layer (not shown) applied to an inwardly facing surface of the container parts. The gas and / or liquid impervious film may be a cellulosic film such as, for example, cellophane. The coating material is preferably a cellulose-based material.

Alternatively or in addition, the package may comprise an inner container 6. The inner container 6 may be in the form of a flexible pouch or bag as illustrated in Figs. 8a-8e. The inner pouch or pouch is preferably made of a recyclable or biodegradable material, preferably cellophane, but may also be made of other bioplastic material.

The inner purse or bag is enclosed by the packaging. It may be attached to a top periphery of the first end portion of the first container portion 51. Additionally or alternatively, it may be attached to a bottom periphery of the second end portion of the second container portion 52. In addition, or alternatively, it may be attached in points or tape along the inwardly facing surface of the first and / or the second container portion 51, 52.

FIG. 8a-8e show a purse attached to a top periphery of the first end portion of the first container portion. However, it is also possible for the purse to extend along the inwardly facing surface of the first end portion of the first container portion and be attached to the inwardly facing surface of the first end portion of the first container portion 51.

Alternatively, the inner container 6 may be made of a glass material (not shown). The inner glass container is then enclosed and held in place by the packaging. It may be attached to a top periphery of the first end portion of the first container portion 51. Additionally or alternatively, it may be attached to a bottom periphery of the second end portion of the second container portion 52. In addition, or alternatively, it may be attached in points or bands. along the inwardly facing surface of the first and / or the second container part 51, 52, or attached to the entire inwardly facing surface of the package.

The method of making the package of the present invention comprises forming a first container portion 51 from a first nonwoven material and a second container portion 52 from a second nonwoven material.

Step 20 using the method described in connection with Figs. The first and second fibrous mass materials may be the same or different fibrous pulp material. The method further comprises joining the first container portion 51 to the second container portion 52 so that the first container portion 51 and the second container portion 52 are permanently attached to each other. The joining is achieved by a relative movement of the first and the second part along the axial direction. The two parts can be attached to each other by means of an adhesive. The attachment can be achieved between a radially outwardly facing surface of the edge wall 522 and a radially inwardly facing surface of the wall 512 of the first container part (see for example Figs. 3c-7c) Alternatively, the attachment can be obtained between a radially inwardly facing surface of the edge wall 522 and a radially outwardly facing surface of the wall 512 of the first container part (not shown).

The radially inwardly facing surface of the wall 512 of the first container portion adapted to be attached to the radially outwardly facing surface of the edge wall 522, or the radially outwardly facing surface of the wall 512 of the first container portion adapted to be attached to the radially inwardly facing surface of the edge wall 522, may form a fastening surface.

The fastening surface may have a length in the axial direction corresponding to 1-10% of the total length of the container, preferably 2-5% of the total length of the container.

The fastening surface may have a length in the axial direction of 3-30 mm, more preferably 3-15 mm, more preferably 7-10 mm.

In the embodiments where the wall section 512 of the first container part 51 comprises a step formation 513, the joining further comprises making the step formation 513 act as an axial boundary for the second between the edge wall 522 and the wall 512 of the first container part.

The method may further comprise forming a container closure member

53. The container closure member 53 is preferably formed of a third fibrous pulp material, preferably using the method described in connection with FIG.

The third fibrous material may be the same as the first and / or second fibrous material. Alternatively, it may be a different fibrous pulp material. Alternatively, the container closure member 53 may be made of other material such as, for example, wood, polylactic acid, or bioplastic material.

The method may further comprise removably securing the container.

DK 202100028 Y3 24 the closing part 53 for the first end section of the first container part 51.

The packaging is adapted to be filled with a content in use. Accordingly, the attachment of the first and second container portions 51, 52 may vary depending on the desired filling method. Preferably, the open end at the first end portion of the first container portion 51 is sealed with a weakened portion of fibrous pulp material or by applying a sealing strip of a film material and preferably also by attaching the container closure portion 53. Thereafter, the first container portion 51 may be filled with a contents before the second container part 52, i.e. a bottom part of the container, is permanently attached.

Alternatively, the second container part 52, for example the second container part shown in Figs. 7b, is filled with a contents before the first container part 51 is permanently attached thereto.

Alternatively, the first and second container portions 51, 52 may be attached to each other prior to filling. During use, the package is then filled with the contents through a top opening in the package before attaching a sealing strip and / or the container closing part 53.

The method of making the package may further comprise applying a gas and / or liquid impervious film to an inwardly facing surface of the first and / or the second container portion.

The gas and / or liquid impervious film can be attached by means of PVA, an adhesive, etc. The adhesive is preferably biodegradable. The film may be a cellulose film, such as, for example, cellophane.

The film is preferably applied during the first pressing step 103 or the second pressing step 105 according to the method as described above in connection with Figs. Alternatively, the film may be applied during the third pressing step 107.

The method may additionally or alternatively comprise applying a coating layer to the inner surface of the container parts using a cellulose-based coating material. The coating layer can be applied by spraying or pouring the coating material on the inner surface or by dipping the container parts in the coating material.

As an alternative to applying a gas and / or liquid impervious film and / or a coating layer, the method may comprise attaching an inner container 6 to the package. During use, the inner container is consequently enclosed by the packaging.

The inner container 6 can be attached before or after attachment of the first and the second container part 51, 52. The inner container 6 can be attached by a

DK 202100028 Y3 25 top periphery of the first end portion of the first container part 51. In addition or alternatively it may be fixed at a bottom periphery of the second container part 52. In addition or alternatively it may be fixed in points or bands along the inwardly facing surface of the first and / or the second container portion 51, 52 or attached to the entire inwardly facing surface of the package.

Claims (15)

DK 202100028 Y3 26 USE MODEL REQUIREMENTS A set of parts for producing a biodegradable disposable package, comprising: a first container part (51) formed of a first fibrous mass material, a second container part (52) formed of a second fibrous mass material, the first container part (51) comprising a wall section (512), which surrounds a product space exhibiting a cross-sectional area, the wall section extending along an axial direction perpendicular to the cross-sectional area, between a first and a second axially spaced end portion of the first container portion (51), the second container portion (52) has a central section (523) and an edge section surrounding the central section (523), the edge section comprising an edge wall (522) extending at an angle relative to the axial direction corresponding to the angle of the wall (512) of the first container part at the second end portion thereof, wherein the second end portion of the first container part (51) and the second container part (52) are adapted to be permanently attached to in each other in such a way that the two parts form a package, and so that a joint is obtained between a radially outwardly facing surface of the edge wall and a radially inwardly facing surface of the wall of the first container part, or between a radially inwardly facing surface of the edge wall and a radially outwardly facing surface of the wall of the first container part, and wherein the wall section (512) of the first container part (51) comprises at least one radial step formation (513). A set of parts according to claim 1, wherein the second end portion of the first container part (51) and the second container part (52) each have their own joining surface which extends at corresponding angles with respect to the axial direction. A set of parts according to claim 2, wherein the corresponding angles relative to the axial direction are greater than 0 degrees and less than 90 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees. A set of parts according to claim 2 or 3, wherein the corresponding angles fit together within + 0-2 degrees, preferably within + 0-1 degrees, most preferably within + 0-0.5 degrees. A set of parts according to claim 1, wherein the edge wall (522) extends at an angle to the axial direction which is greater than 0 degrees and less than 90 °. DK 202100028 Y3 27 degrees, preferably greater than 0 degrees and less than 15 degrees, more preferably 3-5 degrees. A set of parts according to claim 1 or 5, wherein the edge wall (522) extends at a first angle relative to the axial direction and the wall of the first container part (512) at the second end portion thereof extends at a second angle relative to the axial direction , where the first and second angles correspond so that the angles fit together within + 0-2 degrees, preferably within + 0-1 degrees, more preferably within + 0-0.5 degrees. A set of parts according to any one of claims 1-6, wherein the second container part (52) comprises a wall section (524) extending axially between a bottom and a transition to the edge wall, preferably over a axial distance greater than an axial length of the edge wall (522). A set of parts according to any one of claims 1-7, wherein the step formation (513) is located within a section of the wall section (512) which is closest to the second end section, and said section preferably corresponds to 50% of the axial extent of the wall section, preferably 33% and more preferably 25%. A set of parts according to any one of claims 1-8, wherein the step formation (513) is located at a distance from the second end section corresponding to an overall axial length of a joining surface of the second container part (52). A set of parts according to any one of claims 1-9, wherein the step formation (513) forms an axial boundary for the second wall edge (522) and the first container part wall (512). A set of parts according to any one of claims 1-10, wherein the first and / or second container part has a gas and / or liquid impermeable film and / or a coating layer applied to an inwardly facing surface of the respective container part. A set of parts according to claim 11, wherein the gas and / or liquid impervious film is a cellulose film. A set of parts according to any one of claims 1-12, wherein the first end portion of the first container part (51) is adapted to receive a container closing part (53), the container closing part (53) being adapted to be removable attached to the first container part (51) in such a way that it seals the package (5) when attached. DK 202100028 Y3 28 A set of parts according to any one of claims 1-13, further comprising an inner container (6), the inner container (6) being a flexible pouch formed of a biodegradable material or a container formed of a glass material . A biodegradable disposable package comprising: a first container portion (51) formed of a first fibrous mass material, a second container portion (52) formed of a second fibrous mass material, the first container portion (51) comprising a wall portion (512) surrounding a product space having a cross-sectional area, the wall section extending along an axial direction perpendicular to the cross-sectional area, between a first and a second axially spaced end section of the first container part (51), the second container part (52) having a central section (523) and an edge section surrounding the central section (523), the edge section comprising an edge wall (522) extending at an angle relative to the axial direction corresponding to the angle of the wall of the first container part (512). at the second end portion thereof, the second end portion of the first container portion (51) and the second container portion (52) being permanently joined together in such a way that the two portions form an emba layer, where the joining is achieved between a radially outwardly facing surface of the edge wall and a radially inwardly facing surface of the wall of the first container part, or between a radially inwardly facing surface of the edge wall and a radially outwardly facing surface of the wall of the first container part, and of the first container portion (51) comprises at least one radial step formation (513).