US20230389738A1 - Paper drinking straw for a beverage container and beverage container - Google Patents
Paper drinking straw for a beverage container and beverage container Download PDFInfo
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- US20230389738A1 US20230389738A1 US18/249,656 US202118249656A US2023389738A1 US 20230389738 A1 US20230389738 A1 US 20230389738A1 US 202118249656 A US202118249656 A US 202118249656A US 2023389738 A1 US2023389738 A1 US 2023389738A1
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- United States
- Prior art keywords
- paper
- drinking straw
- compressed
- tube
- paper tube
- 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.)
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- 239000010902 straw Substances 0.000 title claims abstract description 108
- 230000035622 drinking Effects 0.000 title claims abstract description 104
- 235000013361 beverage Nutrition 0.000 title claims abstract description 39
- 230000035515 penetration Effects 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 21
- 239000011888 foil Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 239000012263 liquid product Substances 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000012447 hatching Effects 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- 240000000905 Nymphoides indica Species 0.000 description 1
- 235000017590 Nymphoides indica Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G21/00—Table-ware
- A47G21/18—Drinking straws or the like
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G2400/00—Details not otherwise provided for in A47G19/00-A47G23/16
- A47G2400/10—Articles made from a particular material
Definitions
- the invention refers to a paper drinking straw for a beverage container and to a beverage container.
- Beverage containers with a penetration opening for inserting a drinking straw are known from the art.
- the drinking straw may be made of plastic or of paper.
- a drinking straw made of paper however, has a disadvantage that mechanical rigidness is not easy to achieve. This holds in particular in the case that the drinking straw is to open the penetration opening with a bevelled tip at one of its ends. The tip needs to be sufficiently sharp and rigid in order to penetrate the wall of the container.
- the object of the present invention is to provide a paper drinking straw and a beverage container in combination with a paper drinking straw which provides for sufficient mechanical stiffness in order to allow a proper opening of a beverage container with such a paper drinking straw.
- the object of the invention is met by the paper drinking straw with the features of claim 1 and the beverage container with the features of claim 12 .
- the paper of the paper tube is more compressed at the first end, which has a bevelled tip, compared to other portions of the paper tube. By having the paper more compressed it turns out to be mechanically more rigid. This is helpful in providing a sufficiently rigid and sharp bevelled tip for opening a beverage container.
- the paper in other portion(s) may be not compressed at all or less compressed. Typically, paper is compressed to some extent by a paper production process where paper is passed through rollers such as compression rollers.
- a higher degree of compression of paper is typically related to a higher density of the paper, which can be indicated in g/cm 3 .
- the paper may comprise at least one of: wood fibres, bamboo fibres, bagasse fibres, seaweed fibres, fibres of banana plant, fibres of Abaca plant, synthetic fibres, polymer-based fibres, plastic fibres.
- the paper of the paper tube may be, for example, more compressed at its first end compared to the second end of the paper tube. It may also be more compressed compared to other portions of the paper tube such as any portion between the compressed portion at the first end and the second end.
- the paper of the paper tube is compressed such that it has a reduced wall thickness at its first end compared to its other portions. This allows to start with a paper tube with a uniform wall thickness and that by compressing the paper at the first end leads to an increased rigidness of the paper although it has a reduced wall thickness.
- the part of the paper of the paper tube that is compressed at the first end may be only a portion (section) of the circumference of the tube, or it may be the entire circumference of the tube. Compressing the entire circumference gives an enhanced mechanical stability and rigidness to the entire first end of the tube, while compressing only a portion (section) of the circumference provides for an easier way to compress that portion (section) and may be sufficient in order to obtain a sharp and rigid bevelled tip.
- only section of the circumference is compressed there is the option of the transition from the compressed section to the uncompressed remainder of the circumference being stepwise or otherwise being a continuous transition. The later provides for a transition which is less visible.
- the compressed paper is provided only in a range of up to or less than 5%, 10% or 20% of the length of the paper tube.
- the increased mechanical stability is provided only in the area starting at the first end and extending to some extent into the direction of the second end while the remainder of the paper tube remains flexible because of being uncompressed or less compressed.
- Such flexibility can help in that the remainder of the tube may adapt to the shape of a flexible beverage container.
- the beverage container may, for example, be a beverage carton, a foil bag or a stand up pouch, some flexibility of the major portion of the paper tube is helpful for the paper straw to adapt to the package it is attached to. Thereby, if the beverage container is deformed the paper drinking straw can adapt to the deformation at least to some extent, without breaking or otherwise being damaged.
- the density of the compressed paper may be 1.2, 1.5, 2.0 or 3.0 times higher than in the other portions of the paper tube.
- the density can be indicated in e.g. g/cm 3 .
- These other portions may be the second end or any portion between the first end and the second end or between the compressed portion and the second end.
- the thickness of the compressed paper may be less than 0.9, 0.8, 0.7, 0.6 or 0.5 times the thickness of the other portions of the paper tube such as the thickness at the thickest portion of the paper tube.
- a portion of the compressed paper or all of the compressed paper may be impregnated with a moisture resistant agent such as silicate or sodium silicate.
- a moisture resistant agent may further increase the stiffness of the bevelled tip or of the first end or the portion of compressed paper.
- the paper straw is having a circular cross section along its entire length of the paper tube, or at least in the portion where the compressed paper is present.
- a paper straw with a circular cross section is relatively easy to fabricate and at the same time it provides optimum resistance against being radially compressed in different radial directions. It may, however, also have a non-circular cross section along the entire length or at the first end or at the portion of compressed paper.
- the paper tube comprises a winded paper layer.
- a winding of a paper layer allows to fabricate paper tubes in a continuous manner such that the drinking straw can be cut from a continuous tube or a continuously fabricated tube.
- a length may be cut, which is then itself cut into two paper drinking straws by a slanted cut providing both paper drinking straws with the bevelled tip.
- the paper tube comprises a single kind of paper which can be provided in one single layer or several layers, which are attached to each other.
- the paper tube comprises several layers of paper of which some of the layers are of a different kind. This allows, for example, to combine different kinds of paper in order to improve mechanical and moisture resistance of the paper drinking straw.
- the different layers may have themselves different density due to their production, their composition etc.
- the different layers may be joined by some adhesive.
- each of those layers is more compressed at the first end compared to the corresponding layers of other portions of the paper tube.
- the outermost layer of the paper tube is more compressed at the first end compared to the outermost layer of the paper tube of other portions of the paper tube.
- the same can apply to the innermost and/or and any middle layer between an innermost and an outermost layer.
- a beverage container is configured for receiving a liquid product such as a beverage, which is hermitically sealed by the beverage container.
- the beverage container contains a penetration opening which is provided for introducing the paper straw as described above or below.
- the penetration opening typically has a reduced mechanical stability compared to the remainder of the beverage container e.g. by having a reduced wall thickness or less layers of the material that makes up the beverage container or a weakened portion of the wall of the beverage container which can be prepared e.g. by laser perforation of the wall or of some layers of the wall of the beverage container.
- the penetration opening can also be prepared by providing a through hole through the wall of the beverage container, which is closed by another material, such as a foil material, which can be opened with the paper drinking straw by perforating the other material.
- the beverage inside of the beverage container can be consumed by a user through the paper drinking straw.
- the beverage container may be a beverage carton, a foil bag or a stand up pouch.
- FIG. 1 A cut through first embodiment of the paper drinking straw
- FIG. 2 A cut through second embodiment of the paper drinking straw
- FIG. 3 A cut through third embodiment of the paper drinking straw
- FIG. 4 A cut through fourth embodiment of the paper drinking straw and a three dimensional view thereof;
- FIG. 5 A schematic view of a method of fabrication of the paper drinking straw in a first embodiment
- FIG. 6 A second embodiment showing a fabrication method of the paper drinking straw
- FIG. 7 A third embodiment of a fabrication of the paper drinking straw
- FIG. 8 Beverage containers in combination with the paper drinking straw.
- FIG. 1 a a paper drinking straw 1 is shown in a cross section along a longitudinal axis of the paper drinking straw.
- the paper drinking straw has a first end 3 and the second end 4 opposite to the first end.
- the paper drinking straw 1 comprises a paper tube 2 .
- the paper tube is provided with a bevelled tip 7 .
- the paper tube is having paper that is compressed. This can be seen by the more dense hatch and by the reduced wall thickness 9 compared to the wall thickness 8 in the portion (other portion) 6 which has a larger wall thickness 8 .
- the bevelled tip 7 is provided at the first end 3 by the paper drinking straw 1 having a slanted cut.
- FIG. 1 b a view onto the paper drinking straw 1 from its first end 3 towards the second end 4 along a longitudinal axis of the paper drinking straw is shown.
- the inner circumference 11 of the paper drinking straw 1 is shown together with its outer circumference 10 .
- the circumference of a step portion between the compressed and the other portions of the paper tube is shown with reference sign 12 .
- the paper that is compressed is provided on the entire circumference of the paper tube 2 .
- the portion 5 in which the paper is more compressed than in portion 6 extends along the length of the paper drinking straw starting at its first end 3 towards the second end 4 .
- the length L of the portion 5 is less than 5%, 10% or 20% of the length of the paper tube.
- a length L may be several millimetres such as at least or not more than 5, 10 or 15 millimetres.
- the transition from the compressed portion 5 to the other portion 6 is provided in a stepwise fashion as can be seen in FIG. 1 a .
- the transition may, however, also be continuous such that the wall thickness increases from the reduced wall thickness 9 to the larger wall thickness 8 over an extended portion along the length of the tube.
- Such a continuous transition facilitates the insertion of the paper drinking straw in the beverage container as a stepwise transition may impede inserting the paper drinking straw trough the material of the penetration opening.
- FIG. 2 another embodiment of a paper drinking straw is shown.
- the paper drinking straw has a paper tube 2 with a first end 3 and an opposite second end 4 .
- a bevelled tip 7 is provided at the first end 3 .
- the paper of the paper tube 2 is more compressed than in the other portion 6 .
- the difference resides in that the change of thickness 8 , 9 between the portion 5 and portion 6 is given by a step on the inner side of the tube 2 , while in FIG. 1 the step is on the outer side of the paper tube 2 .
- the transition from the smaller thickness 9 to the larger wall thickness 8 is smooth.
- the inner circumference 17 is provided by the inner circumference of the other portion 6
- the inner circumference of the compressed paper in portion 5 is given by the reference numeral 18
- the outer circumference 16 is the outer circumference of both portions 5 and 6 .
- the three circumferences are concentric as can be seen in FIG. 2 b and the circumference 18 of the compressed paper in the portion 5 is between the inner circumference 17 of the other portion 6 and the outer circumference 16 of portion 5 and 6 .
- the transition of the reduced thickness 9 to the larger thickness 8 of the other portion 6 is not necessarily provided in a stepwise manner but can also be a smooth transition which extends over a portion along the length of the paper tube 2 .
- FIG. 3 shows a paper drinking straw 20 with a paper tube 2 having a first end 3 and the second end 4 wherein a bevelled tip 7 is provided at the first end 3 .
- portion 5 at the first end 3 the paper is more compressed than in the portion 6 which, however in this case, does not lead to a change of the wall thickness 23 in portion 5 compared to the wall thickness 24 in portion 6 .
- This can be achieved by, for example, preparing a paper tube which is thicker at its first end 3 in portion 5 , and this thicker portion is then compressed to have the same thickness as the other portion 6 .
- the paper being more compressed is shown in FIG. 3 by a more dense hatching compared to the hatching in portion 6 .
- this paper tube 2 has only one inner circumference 22 and an outer circumference 21 .
- FIG. 4 a further embodiment of a paper drinking straw 25 is shown with a second end 4 and a first end 3 , opposite to the first end 4 , the first end 3 having a bevelled tip 7 at its end.
- the thickness 26 of this portion is smaller than the wall thickness 27 of another portion 6 .
- the transition between the thickness 26 to the thickness 27 is stepwise, but as is explained with respect to FIGS. 1 and 2 the change of thickness may also be a smooth transition which extends over a certain length along the paper tube 2 .
- the change of the wall thickness (step wise or continuous or by a smooth transition as explained above) from a smaller wall thickness 26 to a larger wall thickness 27 does not necessarily have to be provided on the inside of the paper tube 2 , but it may also be provided on the outside or at the inside and the outside of the paper tube 2 .
- bevelled tip 7 which is provided with an increased mechanical strength by having the paper being more compressed in portion 5 at the first end 3 than in portion 6 .
- the compressed paper is only provided in a section of the circumference of the paper tube 2 .
- a portion of the circumference which has a changed geometry compared to a circular shape is indicated by reference numeral 30
- the outer circumference of the tube is indicated by the reference numeral 28
- the inner circumference of the paper tube 2 is indicated by reference numeral 29 .
- FIG. 4 c the three dimensional view of an embodiment of FIGS. 4 a and 4 b is shown which indicates the portion 5 in which the paper is compressed providing a stiffened bevelled tip 7 .
- the wall thickness of the paper in the portion of the compressed paper can have a uniform density or a uniform wall thickness. It may however also have a non-uniform density and/or a non-uniform wall thickness (not shown in the figures). This can be given by e.g. certain parts inside of the portion 5 that are more compressed than other parts in portion 5 . It is for example possible to provide ribbons in the portion 5 , which extend e.g. along the longitudinal axis of the paper tube 2 . The ribbons are formed by having elongated sections next to each other that have a changing or different density and that extend e.g. in the direction of the length of the paper tube 2 (although not along the entire length). Such ribbons can provide an increased mechanical stability.
- FIG. 5 schematically a way of preparing a paper drinking straw 1 is shown.
- the paper drinking straw 1 is provided in a hollow tool 50 .
- the paper drinking straw 1 fits just in the opening of the hollow tool 50 .
- a tool 51 comprising three portions 51 a , 51 b and 51 c is provided which can be moved outwards as indicated by the arrows in FIG. 5 a ).
- those tool portions 51 a , 51 b and 51 c are moved outwards, the paper of the paper tube of the paper drinking straw 1 becomes compressed as the paper is pressed against the wall of the hollow tool 50 .
- the tool inside of the paper drinking straw 1 may also have only two portions or four or more portions that can move outwardly.
- any gaps between the three portions 51 a , 51 b and 51 c ribbons of a less densely compressed paper extending along the length of the tube can be provided.
- Such a method can lead to a paper drinking straw 15 as shown in FIG. 2 wherein the transition from the compressed paper in portion 5 to the paper in the other portion 6 is on the inside of the paper tube 2 .
- FIG. 6 another embodiment is shown for preparing a paper drinking straw 1 .
- a tool 61 is provided which fills the paper tube 2 of the paper drinking straw 1 , optionally entirely.
- Two outer tools 60 a and 60 b can be provided that can be moved relative towards the tool 61 as indicated by the arrows in FIG. 6 . When the tools 60 a and 60 b move towards the tool 61 they compress the paper of the paper tube 2 on the outside of the paper tube 2 .
- the space provided in the closed configuration as shown in FIG. 6 b between the tools 60 a and 60 b and the tool 61 is less than the space required by the paper of the paper tube of the paper drinking straw 1 before compressing it.
- two outer tools 60 a and more then two outer tools can be used each covering a section of the circumference of the inner tool 61 . By any gaps between the outer tools ribbons extending along the direction of the length of the tube can be created.
- Such a version of preparing a paper tube can be used to prepare a paper drinking straw 1 according to FIG. 1 , where the transition of the reduced thickness 9 to a larger thickness 8 is provided on the outside of the paper tube 2 .
- a paper drinking straw as shown in FIG. 3 can be prepared either with the tools of FIG. 5 or the tools of FIG. 6 or corresponding methods.
- FIG. 7 a shows a further embodiment illustrating a way of preparing a paper drinking straw 1 .
- the bevelled tip 7 at the first end 3 of the paper drinking straw 1 is provided between two tools 70 a and 70 b which can be pressed against each other. By pressing the two tools and 70 b against each other the portion with the bevelled tip 7 becomes compressed. This method can be used to prepare a paper drinking straw as shown in FIG. 4 .
- the tools While in FIG. 7 a the tools are having a smooth surface they can also have a surface with a pattern, which is then impressed into the paper. This can be used to created ribbons in the portion 5 of any kind, such as e.g. extending along the direction of the length of the paper tube 2 .
- FIG. 7 b another way is disclosed to prepare a paper drinking straw which has paper only compressed in a section along the circumference of the paper drinking straw.
- a pin 71 or tool 71 is used which is inserted (partially) into the paper drinking straw 1 , which is provided on some kind of support 72 .
- the support 72 can be flat or it can be concave to receive the convex outer form of the paper drinking straw 1 .
- FIG. 7 b In the top portion of FIG. 7 b the drinking straw 1 can be seen being provided on the support 72 .
- the tool 71 has been inserted (partially) into the paper drinking straw 1 .
- a view along the longitudinal axis of the paper drinking straw 1 of FIG. 7 b upper portion and FIG. 7 b middle portion can be seen in FIG. 7 c upper portion.
- the tool 71 In the lower portion of FIG. 7 b the tool 71 has been moved towards the support 72 so that the paper gets compressed between the tool 71 and the support 72 . Thereby, along the length with which the tool 71 is in contact with the paper drinking straw 1 a section 73 is created in which the paper of paper drinking straw 1 is compressed.
- This section does not extend along the entire circumference of the paper drinking straw 1 as portions which are not in contact with the tool 71 are not compressed. A view of this along the longitudinal axis of the paper drinking straw 1 can be seen in FIG. 7 c lower portion.
- the section 73 extends only along a section of the paper drinking straw 1 but not along the entire circumference.
- the thickness of the paper in the section 73 in the direction along the circumference first continuously decreases from the uncompressed part 75 down to a minimum thickness and then increases continuously to the thickness of the uncompressed part 75 .
- the section 73 extends from the tip of the paper drinking straw 1 along the longitudinal axis of the paper drinking straw 1 towards the opposite end (not shown in FIG. 7 b ) of the paper drinking straw 1 but not up to the opposite end. But it extends a length along the paper drinking straw 1 at least up to a point in which a cross section which includes this point has a fully closed circumference of the paper material.
- the inner end (the one opposite to the tip of the paper drinking straw) of the section 73 in FIG. 7 b lower portion (where the thickness changes step wise) lies on point in which the cross section of the paper drinking straw has paper material in a fully closed circumference.
- the compressed section in FIG. 7 a does not reach into the drinking straw up to such a point.
- the tool 71 has a circular cross section. It may however, also have non-circular cross sections. Thereby other shapes of the compressed section 73 may be achieved. An example of such other shape is shown in FIG. 7 d .
- the compressed section 73 has a constant thickness in the direction along the circumference. In this circumferential direction two transition zones 74 are provided in which the thickness of the paper continuously increases from the reduced compress thickness in section 73 to the uncompressed thickness in part 75 .
- the tool 71 may also be moved in a direction oblique to the longitudinal axis. In this way it is possible to move the tool 71 in one single movement from the position in FIG. 7 b upper portion to the position in FIG. 7 b lower portion.
- FIG. 8 shows two embodiments of beverage containers.
- FIG. 8 a shows a beverage carton 81 with a penetration opening 80 through which a paper drinking straw 1 has been inserted.
- This paper drinking straw 1 has a paper tube with the paper being more compressed in the region 82 .
- FIG. 8 b shows a foil bag or a stand up pouch 83 with a penetration opening 84 through which a paper drinking straw 1 has been inserted, the paper drinking straw 1 having a portion of compressed paper 82 .
- the paper drinking straw 1 can be attached at the outside of the beverage container e.g. sealed into a wrapping (such as a paper wrapping) so that it is readily available for opening the beverage container by inserting the paper drinking straw into the penetration opening 80 , 84 .
- a wrapping such as a paper wrapping
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Abstract
The invention refers to a paper drinking straw (1) for a beverage container (81,83) with a penetration opening (80,84) for inserting the paper drinking straw, wherein the paper drinking straw comprises a paper tube (2) with a bevelled tip (7) at a first end (3), wherein paper of paper tube is more compressed at the first end compared to other portions of the paper tube.
Description
- The invention refers to a paper drinking straw for a beverage container and to a beverage container.
- Beverage containers with a penetration opening for inserting a drinking straw are known from the art. The drinking straw may be made of plastic or of paper. A drinking straw made of paper, however, has a disadvantage that mechanical rigidness is not easy to achieve. This holds in particular in the case that the drinking straw is to open the penetration opening with a bevelled tip at one of its ends. The tip needs to be sufficiently sharp and rigid in order to penetrate the wall of the container.
- The object of the present invention is to provide a paper drinking straw and a beverage container in combination with a paper drinking straw which provides for sufficient mechanical stiffness in order to allow a proper opening of a beverage container with such a paper drinking straw.
- The object of the invention is met by the paper drinking straw with the features of
claim 1 and the beverage container with the features ofclaim 12. - Optional embodiments are disclosed in the dependent claims.
- The paper of the paper tube is more compressed at the first end, which has a bevelled tip, compared to other portions of the paper tube. By having the paper more compressed it turns out to be mechanically more rigid. This is helpful in providing a sufficiently rigid and sharp bevelled tip for opening a beverage container. The paper in other portion(s) may be not compressed at all or less compressed. Typically, paper is compressed to some extent by a paper production process where paper is passed through rollers such as compression rollers.
- A higher degree of compression of paper is typically related to a higher density of the paper, which can be indicated in g/cm3.
- The paper may comprise at least one of: wood fibres, bamboo fibres, bagasse fibres, seaweed fibres, fibres of banana plant, fibres of Abaca plant, synthetic fibres, polymer-based fibres, plastic fibres.
- The paper of the paper tube may be, for example, more compressed at its first end compared to the second end of the paper tube. It may also be more compressed compared to other portions of the paper tube such as any portion between the compressed portion at the first end and the second end.
- The paper of the paper tube is compressed such that it has a reduced wall thickness at its first end compared to its other portions. This allows to start with a paper tube with a uniform wall thickness and that by compressing the paper at the first end leads to an increased rigidness of the paper although it has a reduced wall thickness.
- The part of the paper of the paper tube that is compressed at the first end may be only a portion (section) of the circumference of the tube, or it may be the entire circumference of the tube. Compressing the entire circumference gives an enhanced mechanical stability and rigidness to the entire first end of the tube, while compressing only a portion (section) of the circumference provides for an easier way to compress that portion (section) and may be sufficient in order to obtain a sharp and rigid bevelled tip. In case that only section of the circumference is compressed there is the option of the transition from the compressed section to the uncompressed remainder of the circumference being stepwise or otherwise being a continuous transition. The later provides for a transition which is less visible.
- Optionally, along the length of the paper tube starting at its first end the compressed paper is provided only in a range of up to or less than 5%, 10% or 20% of the length of the paper tube. Thereby the increased mechanical stability is provided only in the area starting at the first end and extending to some extent into the direction of the second end while the remainder of the paper tube remains flexible because of being uncompressed or less compressed. Such flexibility can help in that the remainder of the tube may adapt to the shape of a flexible beverage container. As the beverage container may, for example, be a beverage carton, a foil bag or a stand up pouch, some flexibility of the major portion of the paper tube is helpful for the paper straw to adapt to the package it is attached to. Thereby, if the beverage container is deformed the paper drinking straw can adapt to the deformation at least to some extent, without breaking or otherwise being damaged.
- Optionally, the density of the compressed paper may be 1.2, 1.5, 2.0 or 3.0 times higher than in the other portions of the paper tube. The density can be indicated in e.g. g/cm3. These other portions may be the second end or any portion between the first end and the second end or between the compressed portion and the second end.
- The thickness of the compressed paper may be less than 0.9, 0.8, 0.7, 0.6 or 0.5 times the thickness of the other portions of the paper tube such as the thickness at the thickest portion of the paper tube. The higher the compression of a paper tube that was uniform in thickness before a compressing step, the thinner its thickness is. Nevertheless, being more compressed it provides a higher stiffness although being less thick.
- Additionally, a portion of the compressed paper or all of the compressed paper may be impregnated with a moisture resistant agent such as silicate or sodium silicate. A moisture resistant agent may further increase the stiffness of the bevelled tip or of the first end or the portion of compressed paper.
- Optionally, the paper straw is having a circular cross section along its entire length of the paper tube, or at least in the portion where the compressed paper is present. A paper straw with a circular cross section is relatively easy to fabricate and at the same time it provides optimum resistance against being radially compressed in different radial directions. It may, however, also have a non-circular cross section along the entire length or at the first end or at the portion of compressed paper.
- Optionally, the paper tube comprises a winded paper layer. A winding of a paper layer allows to fabricate paper tubes in a continuous manner such that the drinking straw can be cut from a continuous tube or a continuously fabricated tube.
- From a continuous tube or from a continuously fabricated tube a length may be cut, which is then itself cut into two paper drinking straws by a slanted cut providing both paper drinking straws with the bevelled tip.
- The paper tube comprises a single kind of paper which can be provided in one single layer or several layers, which are attached to each other. Optionally, the paper tube comprises several layers of paper of which some of the layers are of a different kind. This allows, for example, to combine different kinds of paper in order to improve mechanical and moisture resistance of the paper drinking straw. The different layers may have themselves different density due to their production, their composition etc. The different layers may be joined by some adhesive.
- In case of several distinct layers that make up the paper tube, each of those layers is more compressed at the first end compared to the corresponding layers of other portions of the paper tube. E.g. the outermost layer of the paper tube is more compressed at the first end compared to the outermost layer of the paper tube of other portions of the paper tube. The same can apply to the innermost and/or and any middle layer between an innermost and an outermost layer.
- A beverage container is configured for receiving a liquid product such as a beverage, which is hermitically sealed by the beverage container. The beverage container contains a penetration opening which is provided for introducing the paper straw as described above or below. The penetration opening typically has a reduced mechanical stability compared to the remainder of the beverage container e.g. by having a reduced wall thickness or less layers of the material that makes up the beverage container or a weakened portion of the wall of the beverage container which can be prepared e.g. by laser perforation of the wall or of some layers of the wall of the beverage container. The penetration opening can also be prepared by providing a through hole through the wall of the beverage container, which is closed by another material, such as a foil material, which can be opened with the paper drinking straw by perforating the other material. The beverage inside of the beverage container can be consumed by a user through the paper drinking straw.
- The beverage container may be a beverage carton, a foil bag or a stand up pouch.
- The following figures are provided in order to provide a better understanding of the invention.
- The figures show:
-
FIG. 1 : A cut through first embodiment of the paper drinking straw; -
FIG. 2 : A cut through second embodiment of the paper drinking straw; -
FIG. 3 : A cut through third embodiment of the paper drinking straw; -
FIG. 4 : A cut through fourth embodiment of the paper drinking straw and a three dimensional view thereof; -
FIG. 5 : A schematic view of a method of fabrication of the paper drinking straw in a first embodiment; -
FIG. 6 : A second embodiment showing a fabrication method of the paper drinking straw; -
FIG. 7 : A third embodiment of a fabrication of the paper drinking straw; -
FIG. 8 : Beverage containers in combination with the paper drinking straw. - In
FIG. 1 a , apaper drinking straw 1 is shown in a cross section along a longitudinal axis of the paper drinking straw. - The paper drinking straw has a first end 3 and the second end 4 opposite to the first end.
- The
paper drinking straw 1 comprises apaper tube 2. At the first end 3, the paper tube is provided with abevelled tip 7. In aportion 5 at the first end 3, the paper tube is having paper that is compressed. This can be seen by the more dense hatch and by the reducedwall thickness 9 compared to thewall thickness 8 in the portion (other portion) 6 which has alarger wall thickness 8. - The
bevelled tip 7 is provided at the first end 3 by thepaper drinking straw 1 having a slanted cut. - In
FIG. 1 b a view onto thepaper drinking straw 1 from its first end 3 towards the second end 4 along a longitudinal axis of the paper drinking straw is shown. Theinner circumference 11 of thepaper drinking straw 1 is shown together with itsouter circumference 10. Between theinner circumference 11 and theouter circumference 10, the circumference of a step portion between the compressed and the other portions of the paper tube is shown withreference sign 12. - As can be seen from
FIGS. 1 a and 1 b , the paper that is compressed is provided on the entire circumference of thepaper tube 2. - The
portion 5 in which the paper is more compressed than inportion 6 extends along the length of the paper drinking straw starting at its first end 3 towards the second end 4. The length L of theportion 5 is less than 5%, 10% or 20% of the length of the paper tube. A length L may be several millimetres such as at least or not more than 5, 10 or 15 millimetres. - The transition from the compressed
portion 5 to theother portion 6 is provided in a stepwise fashion as can be seen inFIG. 1 a . The transition may, however, also be continuous such that the wall thickness increases from the reducedwall thickness 9 to thelarger wall thickness 8 over an extended portion along the length of the tube. Such a continuous transition facilitates the insertion of the paper drinking straw in the beverage container as a stepwise transition may impede inserting the paper drinking straw trough the material of the penetration opening. - In
FIG. 2 another embodiment of a paper drinking straw is shown. The paper drinking straw has apaper tube 2 with a first end 3 and an opposite second end 4. Abevelled tip 7 is provided at the first end 3. In theportion 5 at the first end 3, the paper of thepaper tube 2 is more compressed than in theother portion 6. In comparison toFIG. 1 , the difference resides in that the change ofthickness portion 5 andportion 6 is given by a step on the inner side of thetube 2, while inFIG. 1 the step is on the outer side of thepaper tube 2. On the outer side ofpaper drinking straw 15 the transition from thesmaller thickness 9 to thelarger wall thickness 8 is smooth. - As can be seen in
FIG. 2 b , theinner circumference 17 is provided by the inner circumference of theother portion 6, the inner circumference of the compressed paper inportion 5 is given by thereference numeral 18, and theouter circumference 16 is the outer circumference of bothportions FIG. 2 b and thecircumference 18 of the compressed paper in theportion 5 is between theinner circumference 17 of theother portion 6 and theouter circumference 16 ofportion - As already explained with respect to
FIG. 1 , also in the embodiment ofFIG. 2 , the transition of the reducedthickness 9 to thelarger thickness 8 of theother portion 6 is not necessarily provided in a stepwise manner but can also be a smooth transition which extends over a portion along the length of thepaper tube 2. - While in
FIG. 1 the change of circumference is provided on the outer side and inFIG. 2 the change is provided on the inside of thepaper tube 2, it may also be present on both sides (inside and outside) which means that e.g. a (smaller) step is provided on the outside and another (smaller) step on the inside. Also in this case transitions from the compressed paper in theportion 5 at the first end 3 to the paper of theother portion 6 of thepaper tube 2 is not necessarily provided by a step but can also be provided by a smooth transition along the length of thepaper tube 2. - A further embodiment is shown in
FIG. 3 , which shows apaper drinking straw 20 with apaper tube 2 having a first end 3 and the second end 4 wherein abevelled tip 7 is provided at the first end 3. Here inportion 5 at the first end 3, the paper is more compressed than in theportion 6 which, however in this case, does not lead to a change of thewall thickness 23 inportion 5 compared to thewall thickness 24 inportion 6. This can be achieved by, for example, preparing a paper tube which is thicker at its first end 3 inportion 5, and this thicker portion is then compressed to have the same thickness as theother portion 6. The paper being more compressed is shown inFIG. 3 by a more dense hatching compared to the hatching inportion 6. - As shown in
FIG. 3 b , thispaper tube 2 has only oneinner circumference 22 and anouter circumference 21. - In
FIG. 4 a further embodiment of apaper drinking straw 25 is shown with a second end 4 and a first end 3, opposite to the first end 4, the first end 3 having a bevelledtip 7 at its end. In this embodiment only a section of the circumference of the first end 3 has paper being compressed in theportion 5. Thethickness 26 of this portion is smaller than thewall thickness 27 of anotherportion 6. Here the transition between thethickness 26 to thethickness 27 is stepwise, but as is explained with respect toFIGS. 1 and 2 the change of thickness may also be a smooth transition which extends over a certain length along thepaper tube 2. - Also as explained with respect to
FIGS. 1 and 2 , the change of the wall thickness (step wise or continuous or by a smooth transition as explained above) from asmaller wall thickness 26 to alarger wall thickness 27 does not necessarily have to be provided on the inside of thepaper tube 2, but it may also be provided on the outside or at the inside and the outside of thepaper tube 2. - In the embodiment of
FIG. 4 , it is in particular that bevelledtip 7 which is provided with an increased mechanical strength by having the paper being more compressed inportion 5 at the first end 3 than inportion 6. - As can be seen in
FIG. 4 b , the compressed paper is only provided in a section of the circumference of thepaper tube 2. A portion of the circumference which has a changed geometry compared to a circular shape is indicated byreference numeral 30, while the outer circumference of the tube is indicated by thereference numeral 28 and the inner circumference of thepaper tube 2 is indicated byreference numeral 29. - In
FIG. 4 c the three dimensional view of an embodiment ofFIGS. 4 a and 4 b is shown which indicates theportion 5 in which the paper is compressed providing a stiffenedbevelled tip 7. - The wall thickness of the paper in the portion of the compressed paper can have a uniform density or a uniform wall thickness. It may however also have a non-uniform density and/or a non-uniform wall thickness (not shown in the figures). This can be given by e.g. certain parts inside of the
portion 5 that are more compressed than other parts inportion 5. It is for example possible to provide ribbons in theportion 5, which extend e.g. along the longitudinal axis of thepaper tube 2. The ribbons are formed by having elongated sections next to each other that have a changing or different density and that extend e.g. in the direction of the length of the paper tube 2 (although not along the entire length). Such ribbons can provide an increased mechanical stability. - In
FIG. 5 schematically a way of preparing apaper drinking straw 1 is shown. Thepaper drinking straw 1 is provided in ahollow tool 50. Thepaper drinking straw 1 fits just in the opening of thehollow tool 50. Inside thepaper drinking straw 1, a tool 51 comprising threeportions FIG. 5 a ). When thosetool portions paper drinking straw 1 becomes compressed as the paper is pressed against the wall of thehollow tool 50. Instead of having threeportions paper drinking straw 1 may also have only two portions or four or more portions that can move outwardly. By any gaps between the threeportions - Such a method can lead to a
paper drinking straw 15 as shown inFIG. 2 wherein the transition from the compressed paper inportion 5 to the paper in theother portion 6 is on the inside of thepaper tube 2. - In
FIG. 6 , another embodiment is shown for preparing apaper drinking straw 1. Inside of thepaper drinking straw 1, atool 61 is provided which fills thepaper tube 2 of thepaper drinking straw 1, optionally entirely. Twoouter tools tool 61 as indicated by the arrows inFIG. 6 . When thetools tool 61 they compress the paper of thepaper tube 2 on the outside of thepaper tube 2. The space provided in the closed configuration as shown inFIG. 6 b between thetools tool 61 is less than the space required by the paper of the paper tube of thepaper drinking straw 1 before compressing it. Instead of twoouter tools 60 a and more then two outer tools can be used each covering a section of the circumference of theinner tool 61. By any gaps between the outer tools ribbons extending along the direction of the length of the tube can be created. - Such a version of preparing a paper tube can be used to prepare a
paper drinking straw 1 according toFIG. 1 , where the transition of the reducedthickness 9 to alarger thickness 8 is provided on the outside of thepaper tube 2. - A paper drinking straw as shown in
FIG. 3 can be prepared either with the tools ofFIG. 5 or the tools ofFIG. 6 or corresponding methods. -
FIG. 7 a shows a further embodiment illustrating a way of preparing apaper drinking straw 1. Here thebevelled tip 7 at the first end 3 of thepaper drinking straw 1 is provided between twotools bevelled tip 7 becomes compressed. This method can be used to prepare a paper drinking straw as shown inFIG. 4 . - While in
FIG. 7 a the tools are having a smooth surface they can also have a surface with a pattern, which is then impressed into the paper. This can be used to created ribbons in theportion 5 of any kind, such as e.g. extending along the direction of the length of thepaper tube 2. - In
FIG. 7 b another way is disclosed to prepare a paper drinking straw which has paper only compressed in a section along the circumference of the paper drinking straw. Here apin 71 ortool 71 is used which is inserted (partially) into thepaper drinking straw 1, which is provided on some kind ofsupport 72. Thesupport 72 can be flat or it can be concave to receive the convex outer form of thepaper drinking straw 1. - In the top portion of
FIG. 7 b thedrinking straw 1 can be seen being provided on thesupport 72. In the middle portion ofFIG. 7 b thetool 71 has been inserted (partially) into thepaper drinking straw 1. A view along the longitudinal axis of thepaper drinking straw 1 ofFIG. 7 b upper portion andFIG. 7 b middle portion can be seen inFIG. 7 c upper portion. In the lower portion ofFIG. 7 b thetool 71 has been moved towards thesupport 72 so that the paper gets compressed between thetool 71 and thesupport 72. Thereby, along the length with which thetool 71 is in contact with the paper drinking straw 1 asection 73 is created in which the paper ofpaper drinking straw 1 is compressed. This section does not extend along the entire circumference of thepaper drinking straw 1 as portions which are not in contact with thetool 71 are not compressed. A view of this along the longitudinal axis of thepaper drinking straw 1 can be seen inFIG. 7 c lower portion. Thesection 73 extends only along a section of thepaper drinking straw 1 but not along the entire circumference. The thickness of the paper in thesection 73 in the direction along the circumference first continuously decreases from theuncompressed part 75 down to a minimum thickness and then increases continuously to the thickness of theuncompressed part 75. - The
section 73 extends from the tip of thepaper drinking straw 1 along the longitudinal axis of thepaper drinking straw 1 towards the opposite end (not shown inFIG. 7 b ) of thepaper drinking straw 1 but not up to the opposite end. But it extends a length along thepaper drinking straw 1 at least up to a point in which a cross section which includes this point has a fully closed circumference of the paper material. The inner end (the one opposite to the tip of the paper drinking straw) of thesection 73 inFIG. 7 b lower portion (where the thickness changes step wise) lies on point in which the cross section of the paper drinking straw has paper material in a fully closed circumference. The compressed section inFIG. 7 a does not reach into the drinking straw up to such a point. - In
FIGS. 7 b and 7 c thetool 71 has a circular cross section. It may however, also have non-circular cross sections. Thereby other shapes of thecompressed section 73 may be achieved. An example of such other shape is shown inFIG. 7 d . Here thecompressed section 73 has a constant thickness in the direction along the circumference. In this circumferential direction twotransition zones 74 are provided in which the thickness of the paper continuously increases from the reduced compress thickness insection 73 to the uncompressed thickness inpart 75. - Also in the lengthwise direction along the longitudinal axis of the
paper drinking straw 1 different shapes are possible. As can be seen inFIG. 7 b lower portion the inner end of thesection 73 ends in a stepwise change of thickness of the paper in thecompressed section 73 to the uncompressed part. With anothertool 71 which is not flat in a section along the longitudinal axis of thepaper drinking straw 1 in the part that comes in contact with the paper e.g. a transition zone 76 can be achieved in which the thickness of the paper can increase continuously from the reduced thickness in thecompressed section 73 to the thickness in theuncompressed part 75. - Instead of moving the
tool 71 first along the longitudinal axis of thepaper drinking straw 1 only and then only in a direction perpendicular to the longitudinal axis as depicted inFIG. 7 b thetool 71 may also be moved in a direction oblique to the longitudinal axis. In this way it is possible to move thetool 71 in one single movement from the position inFIG. 7 b upper portion to the position inFIG. 7 b lower portion. -
FIG. 8 shows two embodiments of beverage containers.FIG. 8 a shows abeverage carton 81 with apenetration opening 80 through which apaper drinking straw 1 has been inserted. Thispaper drinking straw 1 has a paper tube with the paper being more compressed in theregion 82. -
FIG. 8 b shows a foil bag or a stand uppouch 83 with apenetration opening 84 through which apaper drinking straw 1 has been inserted, thepaper drinking straw 1 having a portion ofcompressed paper 82. - The
paper drinking straw 1 can be attached at the outside of the beverage container e.g. sealed into a wrapping (such as a paper wrapping) so that it is readily available for opening the beverage container by inserting the paper drinking straw into thepenetration opening
Claims (14)
1. A paper drinking straw for a beverage container with a penetration opening for inserting the paper drinking straw, wherein the paper drinking straw comprises a paper tube with a bevelled tip at a first end,
characterised in that
a paper of the paper tube is more compressed at the first end compared to other portions of the paper tube.
2. The paper drinking straw according to claim 1 , wherein the paper tube comprises a second end opposite to the first end and the paper is more compressed at the first end compared to the second end.
3. The paper drinking straw according to claim 1 , wherein the paper of the paper tube is compressed to a reduced wall thickness at the first end compared to the other portions of the paper tube.
4. The paper drinking straw according to claim 1 , wherein the paper of the paper tube is compressed at the first end in only a section of the circumference of the paper tube wherein optionally the transition in the circumferential direction from the compressed paper in the section to the uncompressed paper outside of the section is a continuous transition.
5. The paper drinking straw according to claim 1 , wherein the entire circumference of the paper tube is compressed.
6. The paper drinking straw according to claim 1 , wherein, along the length of the paper tube starting at the first end the compressed paper is provided only in a range up to 5%, 10% or 20% of the length of the paper tube.
7. The paper drinking straw according to claim 1 , wherein the density of the compressed paper is at least 1.2, 1.5, 2.0, or 3.0 times higher than in the other portions of the paper tube.
8. The paper drinking straw according to claim 1 , wherein the thickness of the compressed paper is less than 0.9, 0.8, 0.7, 0.6 or 0.5 times the thickness of the other portions of the paper tube wherein the thickness of the other portions is the thickness at the thickest portion of the paper tube.
9. The paper drinking straw according to claim 1 , wherein a portion of the compressed paper or all of the compressed paper is impregnated with moisture resistant agent, wherein the moisture resistant agent is silicate or sodium silicate.
10. The paper drinking straw according to claim 1 , wherein the paper drinking straw has a circular cross section along the entire length of the paper tube or at least in the region where the compressed paper is present and/or in the other portions.
11. The paper drinking straw according to claim 1 , wherein the paper tube comprises a winded paper layer.
12. The paper drinking straw of claim 1 , wherein the paper tube comprises a single paper layer or several layers of paper.
13. A beverage container for receiving liquid product, wherein the beverage container comprises a penetration opening for introducing the paper drinking straw of claim 1 .
14. The beverage container of claim 13 , wherein the beverage container is designed as a beverage carton, a foil bag or a stand-up pouch made of foil.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20202723.1 | 2020-10-20 | ||
EP20202723.1A EP3987983A1 (en) | 2020-10-20 | 2020-10-20 | Paper drinking straw for a beverage container and beverage container |
PCT/EP2021/076902 WO2022083995A1 (en) | 2020-10-20 | 2021-09-30 | Paper drinking straw for a beverage container and beverage container |
Publications (1)
Publication Number | Publication Date |
---|---|
US20230389738A1 true US20230389738A1 (en) | 2023-12-07 |
Family
ID=72964511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/249,656 Pending US20230389738A1 (en) | 2020-10-20 | 2021-09-30 | Paper drinking straw for a beverage container and beverage container |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230389738A1 (en) |
EP (2) | EP3987983A1 (en) |
CN (1) | CN116390677A (en) |
WO (1) | WO2022083995A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005014430A1 (en) * | 2003-08-11 | 2005-02-17 | Kanebo, Ltd. | Paper package and straw |
MX2019002111A (en) * | 2016-10-21 | 2019-07-04 | Tetra Laval Holdings & Finance | Drinking straw and method for manufacturing a drinking straw. |
KR102041221B1 (en) * | 2018-12-06 | 2019-11-07 | 백승복 | Upper part reinforced paper straw |
JP2020092746A (en) * | 2018-12-10 | 2020-06-18 | 日本製紙株式会社 | Paper-made drinking straw |
JP2020156938A (en) * | 2019-03-27 | 2020-10-01 | 日本製紙株式会社 | Paper-made drinking straw |
CN110025194A (en) * | 2019-05-27 | 2019-07-19 | 薛羽 | Flexible paper suction pipe and its manufacture craft |
-
2020
- 2020-10-20 EP EP20202723.1A patent/EP3987983A1/en not_active Withdrawn
-
2021
- 2021-09-30 EP EP21785888.5A patent/EP4231879A1/en active Pending
- 2021-09-30 CN CN202180070865.3A patent/CN116390677A/en active Pending
- 2021-09-30 WO PCT/EP2021/076902 patent/WO2022083995A1/en unknown
- 2021-09-30 US US18/249,656 patent/US20230389738A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP3987983A1 (en) | 2022-04-27 |
WO2022083995A1 (en) | 2022-04-28 |
CN116390677A (en) | 2023-07-04 |
EP4231879A1 (en) | 2023-08-30 |
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