WO2023280467A1 - Verfahren zum zumindest teilweisen verschliessen einer hauptöffnung eines trinkhalmes - Google Patents
Verfahren zum zumindest teilweisen verschliessen einer hauptöffnung eines trinkhalmes Download PDFInfo
- Publication number
- WO2023280467A1 WO2023280467A1 PCT/EP2022/064613 EP2022064613W WO2023280467A1 WO 2023280467 A1 WO2023280467 A1 WO 2023280467A1 EP 2022064613 W EP2022064613 W EP 2022064613W WO 2023280467 A1 WO2023280467 A1 WO 2023280467A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drinking straw
- wall
- tongue
- shaped section
- cutting
- 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.)
- Ceased
Links
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
- A47G21/185—Mouthpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/16—Cutting rods or tubes transversely
- B26D3/166—Trimming tube-ends
-
- 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
- A47G21/00—Table-ware
- A47G21/18—Drinking straws or the like
- A47G21/183—Drinking straws or the like with means for changing the flavour of the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/16—Cutting rods or tubes transversely
Definitions
- Drinking straws for sucking in and drinking liquids have long been known in various configurations.
- this is an elongated tube open at both ends, one end being dipped into the liquid to be taken up and the other end being placed in the mouth by a consumer.
- the main opening is closed at the end in a simple manner by welding using heat and pressure.
- the outlet openings are then drilled or punched as small holes in the wall of the drinking straw.
- drinking straws are increasingly being made from other, preferably biodegradable, materials. There are already drinking straws based on paper or sugar cane.
- the present invention has therefore set itself the task of providing a method for closing the end of a drinking straw based on paper, which method can be carried out more simply and therefore faster and more cost-effectively than known methods.
- the invention is a method for end-closing a paper-based drinking straw, comprising the following steps: providing a tubular paper-based drinking straw;
- the method according to the invention provides that a tab-like, tongue-shaped section is formed in an end area of the drinking straw by appropriate cutting, which is folded over the opening of the drinking straw and glued to the outside of the wall of the drinking straw.
- the adhesive required for the bond can be applied either to the outside of the wall of the drinking straw or in the area of the tongue-shaped section. In both cases it is not necessary to introduce the adhesive into the tubular hollow body. Such an adhesion on the outside of the wall of the drinking straw is much easier to implement in terms of process technology and can be accomplished more efficiently and thus more cost-effectively.
- the invention provides that the tongue-shaped section is folded over and glued to the outside of the wall of the drinking straw in such a way that two lateral openings are formed.
- the tongue-shaped section is folded over only to the extent that two opposite openings remain on the side. In this position will the tongue-shaped section is glued to the outside of the wall of the drinking straw.
- liquid can be sucked in through the side openings and get into the mouth of a consumer.
- the size of these openings can be adjusted within certain limits via the extent of the overlap between the tongue-shaped section and the wall of the drinking straw.
- Folding the tongue-shaped section over the opening of the drinking straw can preferably be supported by using a mandrel.
- This is a round rod with a diameter adapted to the desired size of the side openings.
- the method according to the invention is not only characterized by the fact that it is simplified by the application of adhesive on the outside, it also has the advantage that two small lateral openings are formed directly when the drinking straw is folded over and glued at the end and not in one subsequent process step must be introduced separately.
- further small holes are made in the wall of the drinking straw, for example by drilling or punching.
- two further diametrically opposite holes can be made in a single drilling or punching operation by driving a corresponding tool once completely through the tubular drinking straw in a direction perpendicular to its longitudinal axis.
- a particularly pleasant feeling of drinking is achieved when the side openings and the additionally introduced holes are distributed substantially evenly over the circumference of the drinking straw.
- a quick-setting hot-melt adhesive suitable for food contact is used to bond the tongue-shaped section to the outside of the wall of the drinking straw.
- This can be, for example, the polyolefin hot-melt adhesive from Henkel, known under the name Technomelt Supra PRO 220 Plus.
- Other suitable hot melt adhesives can also be used.
- a quick-setting hot-melt adhesive has the advantage that the adhesive bond between the tongue-shaped section and the wall of the drinking straw holds reliably even after a short amount of pressure.
- such adhesives are generally low-migration and therefore particularly suitable for food contact.
- the adhesive can be applied in a manner known per se, for example by means of a nozzle or by means of a disc.
- the end area of the drinking straw is cut to size by making two first cuts along two first cutting lines starting from an end edge of the drinking straw into the wall of the drinking straw and making a second cut along a second cutting line, with the second Section is made in a direction parallel to the end edge of the drinking straw and the line of intersection connects the end points of the first two lines of intersection.
- the first two cuts are made simultaneously in a single cutting operation with the aid of a cutting tool placed at a point on the end edge and inserted into the wall of the drinking straw at an angle with respect to the longitudinal direction of the drinking straw.
- the end area of the drinking straw can thus be cut to size, for example, by starting from one end edge of the drinking straw and initially making two first cuts along two first cutting lines over a length of about 1 to 3 cm in a single cutting process with the aid of a diagonal at one point on the end edge attached knife into the wall.
- a partial area is separated from the wall of the drinking straw by a second cut connecting the two first cutting lines at their end points in a direction parallel to the end edge, whereby at the same time a tongue-shaped section is formed which protrudes beyond the opening of the drinking straw.
- the contour of the tongue-shaped section can finally be cut further in the desired manner.
- the described precise application of a cutting tool to a point on the end edge of the drinking straw and the insertion of the cutting tool into the wall at an angle with respect to the longitudinal direction of the drinking straw automatically results in a tongue-shaped section which tapers towards its free end and is rounded at its free end.
- a particularly favorable contour of the tongue-shaped section results when the two initially introduced cuts are made at an angle of approximately 5° to 35°, preferably approximately 10° to 20° with respect to the longitudinal direction of the drinking straw.
- the cuts can be made in the wall at an angle of about 15° with respect to the longitudinal direction of the drinking straw.
- the cutting tool can be applied at a point on the end edge and at the desired angle with respect to the longitudinal direction of the drinking straw over a length of about 1 to 3 cm into its wall, so that two cuts are made at the same time.
- the second cut which connects the two first cut lines at their end points, is made in a direction parallel to the edge of the drinking straw and perpendicular to its longitudinal direction.
- the cutting depth of this second cut into the drinking straw is preferably about half to 2/3 of the diameter of the drinking straw.
- a particularly favorable contour of the tongue-shaped section results when the second cut has a cutting depth of about 3/5 of the diameter of the drinking straw.
- the first two cuts and the second cut can be made either simultaneously or sequentially.
- a first cutting tool can be used to make the first cuts and a second cutting tool can be used to make the second cut.
- the size of the resulting lateral openings can be influenced by the concrete design of the outer contour of the tongue-shaped section as well as by the extent of the overlap of the folded tongue-shaped section with the wall of the drinking straw.
- the tongue-shaped section is rounded at its free end. This ensures that the free end can be securely glued to the outside of the wall without any corners protruding.
- the invention provides a method for producing paper-based drinking straws that are closed at the end, by means of which such drinking straws can be produced very efficiently in large numbers.
- FIG. 1 a section of a paper-based drinking straw in a lateral, slightly oblique view
- FIG. 2 the drinking straw from FIG. 1, with an area to be cut being marked;
- FIG. 3 the drinking straw from FIG. 1 after the cutting has taken place, in a side view
- FIG. 4 the drinking straw cut to size from FIG. 3 in a view rotated through 90° around the longitudinal axis;
- FIG. 5 the drinking straw from FIG. 4, the tongue-shaped section being folded over the opening of the drinking straw and glued to the outside of the wall of the drinking straw;
- FIG. 6 the drinking straw from FIG. 5 in a view rotated by 90° about the longitudinal axis.
- FIGS. 1 to 6 show a section of a paper-based drinking straw 1 during the passage through the individual process steps of the process according to the invention.
- the illustrations are merely schematic and not necessarily true to scale.
- FIG. 1 shows the end area of the drinking straw 1 as it is provided in a first step for the method.
- the drinking straw 1 is designed as a tubular hollow body with a wall 2 and openings at the ends, only one opening 3 at the end being shown in FIG.
- the drinking straw 1 is made of paper.
- the end area of the drinking straw 1 is cut in such a way that a tongue-shaped section 4 is formed.
- the region 7 to be removed by cutting is shown hatched in FIG.
- the cutting is initially carried out along two first cutting lines 5, of which only the cutting line 5 facing the viewer can be seen in FIG.
- the cutting lines 5 start at the end edge 8 of the drinking straw 1 and run from there slightly obliquely at an angle of about 15° with respect to the longitudinal direction L of the drinking straw through the wall 2 of the drinking straw 1 .
- the first two cuts along the first cutting lines 5 are made simultaneously in a single cutting process by a cutting tool attached to the edge 8 of the drinking straw 1 at the end.
- the first cutting lines 5 end or merge into a second cutting line 6, which extends essentially parallel to the end edge 8 and which connects the ends of the two first cutting lines 5 connects with each other.
- the cutting depth of the second cut along the second cutting line 6 is approximately 3/5 of the diameter of the drinking straw.
- Figure 3 shows such a cut drinking straw 1 in a side view
- Figure 4 shows the same drinking straw 1 after a rotation about the longitudinal axis by 90 ° in a through the direction indicated by rotary arrow D.
- the protruding tongue-shaped section 4 which is rounded at its free end 11, is clearly visible.
- the tongue-shaped section 4 is folded over the opening 3a according to the arrow P in FIG. 4 and glued to the outside of the wall 2 of the drinking straw 1.
- a quick-setting hot-melt adhesive suitable for contact with food is applied to the outside 2 of the wall of the drinking straw 1 in the area denoted by 9 in FIG.
- the tongue-shaped section 4 is bonded to the outside of the wall 2 of the drinking straw 1 by means of the hot-melt adhesive, so that the opening 3a is largely closed, see FIG selected during folding and gluing so that two lateral openings 10 are formed, which can be seen in particular from the illustration in FIG. 6 shows the drinking straw 1 again in the same orientation as in FIG. 3, i.e. rotated back by 90° about the longitudinal axis compared to the representations in FIGS.
- the size of the openings 10 can be scaled via the extent of the overlap between the tongue-shaped section 4 and the wall 2 of the drinking straw 1, i.e. the openings 10 become smaller the further the tongue-shaped section 4 is placed over the wall 2.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280047448.1A CN117651512A (zh) | 2021-07-07 | 2022-05-30 | 用于至少部分地封闭饮用吸管的主开口的方法 |
| US18/391,949 US20240115063A1 (en) | 2021-07-07 | 2023-12-21 | Method for at least partially closing a main opening of a drinking straw |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21184179.6 | 2021-07-07 | ||
| EP21184179.6A EP4115776B1 (de) | 2021-07-07 | 2021-07-07 | Verfahren zum zumindest teilweisen verschliessen einer hauptöffnung eines trinkhalmes |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/391,949 Continuation US20240115063A1 (en) | 2021-07-07 | 2023-12-21 | Method for at least partially closing a main opening of a drinking straw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023280467A1 true WO2023280467A1 (de) | 2023-01-12 |
Family
ID=76829407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/064613 Ceased WO2023280467A1 (de) | 2021-07-07 | 2022-05-30 | Verfahren zum zumindest teilweisen verschliessen einer hauptöffnung eines trinkhalmes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240115063A1 (de) |
| EP (1) | EP4115776B1 (de) |
| CN (1) | CN117651512A (de) |
| WO (1) | WO2023280467A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997032717A1 (de) * | 1996-03-08 | 1997-09-12 | Brodbeck Maschinenbau Gmbh & Co. | Vorrichtung zur herstellung eines röhrchens |
| US20140263718A1 (en) * | 2013-03-15 | 2014-09-18 | Kathie Ann Marouthis | Straw with hygiene pick |
| US20200085218A1 (en) * | 2018-09-14 | 2020-03-19 | Chien-Ming Huang | Integrally Formed Paper Straw with Pointed Head |
-
2021
- 2021-07-07 EP EP21184179.6A patent/EP4115776B1/de active Active
-
2022
- 2022-05-30 CN CN202280047448.1A patent/CN117651512A/zh active Pending
- 2022-05-30 WO PCT/EP2022/064613 patent/WO2023280467A1/de not_active Ceased
-
2023
- 2023-12-21 US US18/391,949 patent/US20240115063A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997032717A1 (de) * | 1996-03-08 | 1997-09-12 | Brodbeck Maschinenbau Gmbh & Co. | Vorrichtung zur herstellung eines röhrchens |
| US20140263718A1 (en) * | 2013-03-15 | 2014-09-18 | Kathie Ann Marouthis | Straw with hygiene pick |
| US20200085218A1 (en) * | 2018-09-14 | 2020-03-19 | Chien-Ming Huang | Integrally Formed Paper Straw with Pointed Head |
Non-Patent Citations (1)
| Title |
|---|
| UNKNOWN AUTHOR: "Sensory Straw makes drinking fun", 18 July 2008 (2008-07-18), pages 1 - 2, XP055866963, Retrieved from the Internet <URL:https://www.beveragedaily.com/Article/2003/01/20/Sensory-Straw-makes-drinking-fun> [retrieved on 20211129] * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117651512A (zh) | 2024-03-05 |
| US20240115063A1 (en) | 2024-04-11 |
| EP4115776B1 (de) | 2026-02-11 |
| EP4115776A1 (de) | 2023-01-11 |
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