EP1225824A2 - A drinking straw - Google Patents
A drinking strawInfo
- Publication number
- EP1225824A2 EP1225824A2 EP00974666A EP00974666A EP1225824A2 EP 1225824 A2 EP1225824 A2 EP 1225824A2 EP 00974666 A EP00974666 A EP 00974666A EP 00974666 A EP00974666 A EP 00974666A EP 1225824 A2 EP1225824 A2 EP 1225824A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- drinking straw
- color
- printed
- tubular layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- A47G21/182—Drinking straws or the like with means for amusing or giving information to the user
Definitions
- This invention relates to a drinking straw and a method for its manufacture.
- the present invention provides a drinking straw comprising a plastics tubular layer and a sleeve in contact with the layer and bearing at least one printed indicium, logo, message, design or the like.
- Said plastics tubular layer may, for example, be of polypropylene and may comprise color-changing thermochromic resin to give an additional eye-catching feature.
- the sleeve which is usually of a plastics film material such as extruded polyvinyl chloride, and may have a thickness between and 100 ⁇ iu, preferably 50 ⁇ m, is preferably heat shrunk into place.
- the sleeve is printed with color-changing ink, and optionally one or more standard non-color-changing inks .
- Color- changing ink means ink that changes from colorless to colored or opaque, from one color to another, or from opaque to clear under predetermined conditions.
- the ⁇ riochromic ink which changes color on inserting the straw into a hot or cold drink, may be used.
- thermochromic ink would change its appearance on insertion into a cold drink at between -5 and 20 °C and more preferably between 0 and 10 °C. It could, however, change by being rubbed or on insertion into a hot drink and thus being heated to between 27 and 65 °C, more preferably between 35 and 55 °C.
- the color- changing ink may comprise photochromic ink, which responds to light of a specific wavelength, hydrochromic ink, which responds to the presence of moisture, or other color- changing ink.
- One or more inks may be printed on the outside of the sleeve or the inside, if the sleeve is transparent.
- the indicium or the like may be printed in a color-changing ink, or it may be printed in a non-color-changing ink with color-changing ink arranged to reveal and/or change the appearance of the indicium or the like under the predetermined conditions. For example, one or more additional words, patterns, shapes, letters, numbers or combinations thereof may be revealed. This may convey an advertising message or design or information required to win a prize.
- the sleeve is printed with a permanent ink on its outside and a color-changing ink on its inside.
- the color changing ink is used to print the design or message to be revealed, which is substantially or totally invisible at ambient temperature, and becomes visible when cooled.
- the straw is to be used in conjunction with a liquid hotter than ambient temperature and the color changing ink is dark (e.g. black) at ambient temperature and masks the design or information to be revealed. On warming, the dark masking layer changes color or loses color and the design beneath (which can be printed in non-color-changing ink) is revealed.
- a liquid hotter than ambient temperature and the color changing ink is dark (e.g. black) at ambient temperature and masks the design or information to be revealed.
- the dark masking layer changes color or loses color and the design beneath (which can be printed in non-color-changing ink) is revealed.
- the invention provides a mechanism for revealing a winning or losing message on a straw when the straw is used to imbibe a liquid.
- a straw When a straw is used it is usually in front of the user for a period of time, and therefore constitutes an ambient medium for communicating to the user of the straw.
- the invention has achieved its aim of advertising or performing a promotional game on a drinking straw, and provides an advertising medium which can be displayed to a largely "captive audience".
- the present invention also provides a method of manufacturing a drinking straw comprising forming a plastics tubular layer and applying a sleeve to the layer, the sleeve bearing at least one printed indicium, logo, message, design or the like.
- the plastics tubular layer is formed by extruding a material such as polypropylene, optionally containing a color-changing resin.
- the tubular layer is preferably extruded in a length longer than one straw and cut into appropriate lengths for straws.
- the sleeve is formed by extruding a plastics film material such as polyvinyl chloride of for - A -
- the printing comprises the use of a color-changing ink and it may also include the use of a non-color-changing ink.
- the step of applying the sleeve to the tubular layer may comprise wrapping the sleeve around the tubular layer and heating the sleeve to an elevated temperature (say 150
- Alternative steps for applying the sleeve to the tubular layer include sonic or heat welding or gluing processes.
- Figures la and lb show a drinking straw according to an embodiment of the invention
- Figures 2a and 2b show a drinking straw according to a second embodiment
- Figures 3a and 3b show a drinking straw according to a third embodiment.
- FIG. la, 2a and 3a show how three different extruded polypropylene drinking straws appear at ambient temperature.
- a transparent extruded polyvinyl chloride web has had a message printed with color changing ink, which is invisible at ambient temperature, on one side.
- a permanently visible message 1 has additionally been printed with non-color-changing ink on the other side of the web. The web has been heat shrunk into place around the straw as a sleeve, so that the optional permanently visible message 1 is on the outside and the invisible message on the inside.
- the previously invisible message 2 becomes visible.
- this message 2 is used in conjunction with a promotional game and informs the consumer that he or she has won a prize.
- the previously invisible message 2 provides additional advertising information.
- the indicium or the like can comprise a digrammatical or numerical design or a pattern of different colors.
Landscapes
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Packages (AREA)
Abstract
A drinking straw comprises a plastics tubular layer and a sleeve in contact with the layer, the sleeve bearing at least one printed message (1) or the like. The sleeve is preferably heat shrunk into place and bears an additional message (2), which is invisible at ambient temperature but appears when the straw is cooled on insertion into a cold drink.
Description
A DRINKING STRAW
BACKGROUND TO THE INVENTION
This invention relates to a drinking straw and a method for its manufacture.
It would be desirable, for advertising or promotional purposes, to be able to print a logo or message on to a drinking straw. However, this would be a difficult task given that conventionally straws are manufactured from plastics material by extrusion at high speed and have a thin wall, the surface of which is curved and shiny. Even if printing were possible, it would be a costly exercise to perform in relation to the extremely low cost of the item itself, and registering more than one color of print would be difficult.
SUMMARY OF THE INVENTION
It is an aim of the invention to provide a practical drinking straw bearing a printed message or design, and to provide opportunities for playing promotional games in connection with the message or design.
Accordingly, the present invention provides a drinking straw comprising a plastics tubular layer and a sleeve in contact with the layer and bearing at least one printed indicium, logo, message, design or the like.
Said plastics tubular layer may, for example, be of polypropylene and may comprise color-changing thermochromic resin to give an additional eye-catching feature.
The sleeve, which is usually of a plastics film material such as extruded polyvinyl chloride, and may have a thickness between and 100 μiu, preferably 50 μm, is preferably heat shrunk into place.
In a most preferred embodiment of the invention, the sleeve is printed with color-changing ink, and optionally one or more standard non-color-changing inks . "Color- changing ink" means ink that changes from colorless to colored or opaque, from one color to another, or from opaque to clear under predetermined conditions. For example, theπriochromic ink, which changes color on inserting the straw into a hot or cold drink, may be used. Preferably, the thermochromic ink would change its appearance on insertion into a cold drink at between -5 and 20 °C and more preferably between 0 and 10 °C. It could, however, change by being rubbed or on insertion into a hot drink and thus being heated to between 27 and 65 °C, more preferably between 35 and 55 °C. Alternatively the color- changing ink may comprise photochromic ink, which responds to light of a specific wavelength, hydrochromic ink, which responds to the presence of moisture, or other color- changing ink.
One or more inks may be printed on the outside of the sleeve or the inside, if the sleeve is transparent. The indicium or the like may be printed in a color-changing ink, or it may be printed in a non-color-changing ink with color-changing ink arranged to reveal and/or change the appearance of the indicium or the like under the predetermined conditions. For example, one or more additional words, patterns, shapes, letters, numbers or combinations thereof may be revealed. This may convey an advertising message or design or information required to win a prize.
In a particular example the sleeve is printed with a permanent ink on its outside and a color-changing ink on its inside.
Preferably, when the straw is to be used with cold liquids, the color changing ink is used to print the design
or message to be revealed, which is substantially or totally invisible at ambient temperature, and becomes visible when cooled.
In another embodiment, the straw is to be used in conjunction with a liquid hotter than ambient temperature and the color changing ink is dark (e.g. black) at ambient temperature and masks the design or information to be revealed. On warming, the dark masking layer changes color or loses color and the design beneath (which can be printed in non-color-changing ink) is revealed.
It will be appreciated that the invention provides a mechanism for revealing a winning or losing message on a straw when the straw is used to imbibe a liquid. When a straw is used it is usually in front of the user for a period of time, and therefore constitutes an ambient medium for communicating to the user of the straw. The invention has achieved its aim of advertising or performing a promotional game on a drinking straw, and provides an advertising medium which can be displayed to a largely "captive audience".
The present invention also provides a method of manufacturing a drinking straw comprising forming a plastics tubular layer and applying a sleeve to the layer, the sleeve bearing at least one printed indicium, logo, message, design or the like.
Preferably, the plastics tubular layer is formed by extruding a material such as polypropylene, optionally containing a color-changing resin. The tubular layer is preferably extruded in a length longer than one straw and cut into appropriate lengths for straws.
Advantageously, the sleeve is formed by extruding a plastics film material such as polyvinyl chloride of for
- A -
example about 50 μm thickness, either in a tube or preferably as a web. The tube or web may then be printed with the indicium or the like in a high-speed continuous reel to reel printing process, thus saving manufacturing costs. Preferably, the printing comprises the use of a color-changing ink and it may also include the use of a non-color-changing ink.
The step of applying the sleeve to the tubular layer may comprise wrapping the sleeve around the tubular layer and heating the sleeve to an elevated temperature (say 150
°C) to cause it to shrink into place around the tubular layer.
Alternative steps for applying the sleeve to the tubular layer include sonic or heat welding or gluing processes.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described by way of example only with reference to the accompanying drawings, in which:
Figures la and lb show a drinking straw according to an embodiment of the invention;
Figures 2a and 2b show a drinking straw according to a second embodiment; and
Figures 3a and 3b show a drinking straw according to a third embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
- Figures la, 2a and 3a show how three different extruded polypropylene drinking straws appear at ambient temperature. In each case a transparent extruded polyvinyl chloride web has had a message printed with color changing
ink, which is invisible at ambient temperature, on one side. In the embodiments of Figures 2a and 3a, a permanently visible message 1 has additionally been printed with non-color-changing ink on the other side of the web. The web has been heat shrunk into place around the straw as a sleeve, so that the optional permanently visible message 1 is on the outside and the invisible message on the inside.
As shown in Figures lb, 2b and 3b, on insertion of the straw into a cool drink, the previously invisible message 2 becomes visible. In Figures lb and 2b, this message 2 is used in conjunction with a promotional game and informs the consumer that he or she has won a prize. In Figure 3b, the previously invisible message 2 provides additional advertising information.
Additionally or alternatively, the indicium or the like can comprise a digrammatical or numerical design or a pattern of different colors.
Claims
1. A drinking straw comprising a plastics tubular layer and a sleeve in contact with the layer, the sleeve bearing at least one printed indicium, logo, message, design or the like.
2. A drinking straw according to claim 1, wherein the tubular layer comprises color-changing thermochromic resin.
3. A drinking straw according to claim 1 or 2, wherein the sleeve is of extruded polyvinyl chloride.
4. A drinking straw according to claim 1, 2 or 3, wherein the sleeve is heat shrunk into place.
5. A drinking straw according to any preceding claim, wherein sleeve is transparent, and the indicium or the like is printed on the inside of the sleeve.
6. A drinking straw according to any preceding claim, wherein the sleeve is printed with color-changing ink.
7. A drinking straw according to claim 5, wherein the sleeve is additionally printed with a non-color- changing ink.
8. A drinking straw according to claim 7, wherein the sleeve is transparent, and the color-changing and non-color-changing inks are printed on opposite sides of the sleeve.
9. A drinking straw according to claim 6, 7 or 8, wherein the color-changing-ink changes its appearance on insertion into a cold drink at between -5 and 20 °C and preferably between 0 and 10 °C.
10. A method of manufacturing a drinking straw comprising forming a plastics tubular layer and applying a sleeve to the layer, the sleeve bearing at least one printed indicium, logo, message, design or the like.
11. A method according to claim 10, wherein the plastics tubular layer is formed by extruding polypropylene.
12. A method according to claim 10 or 11, wherein the sleeve is formed by extruding a plastics film material having a thickness between 1 and 100 μirt, preferably about 50 μin.
13. A method according to claim 12, wherein the plastics film material is extruded as a web.
14. A method according to claim 12 or 13, wherein the plastics film material is printed with the indicium or the like in a high speed continuous reel to reel printing process.
15. A method according to any one of claims 10 to 14, wherein the step of applying the sleeve to -the tubular layer comprises wrapping the sleeve around the tubular layer and heating the sleeve to an elevated temperature to cause it to shrink into place around the tubular layer.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9925095 | 1999-10-22 | ||
GBGB9925095.3A GB9925095D0 (en) | 1999-10-22 | 1999-10-22 | A drinking straw |
PCT/GB2000/004079 WO2001030211A2 (en) | 1999-10-22 | 2000-10-23 | A drinking straw |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1225824A2 true EP1225824A2 (en) | 2002-07-31 |
Family
ID=10863242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00974666A Withdrawn EP1225824A2 (en) | 1999-10-22 | 2000-10-23 | A drinking straw |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1225824A2 (en) |
GB (1) | GB9925095D0 (en) |
WO (1) | WO2001030211A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110074634A (en) * | 2011-09-30 | 2019-08-02 | 汉斯·O·里比 | Higher element medical disposable material product |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1912368U (en) * | 1963-07-25 | 1965-03-18 | Karl Dr Kuester | DRINKING STRAW. |
US3957202A (en) * | 1975-09-17 | 1976-05-18 | Hornsby Jr James R | Novelty drinking straw |
JPS648924A (en) * | 1987-03-13 | 1989-01-12 | Yoshiyuki Corp | Color changeable straw |
JPH07136053A (en) * | 1993-11-17 | 1995-05-30 | Sadao Kato | Straw |
US5722219A (en) * | 1996-12-02 | 1998-03-03 | Dobransky; Mark J. | Method of making a drinking straw |
US5785171A (en) * | 1997-07-02 | 1998-07-28 | Howes; James P. | Prize delivery system |
-
1999
- 1999-10-22 GB GBGB9925095.3A patent/GB9925095D0/en not_active Ceased
-
2000
- 2000-10-23 WO PCT/GB2000/004079 patent/WO2001030211A2/en not_active Application Discontinuation
- 2000-10-23 EP EP00974666A patent/EP1225824A2/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0130211A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001030211A2 (en) | 2001-05-03 |
GB9925095D0 (en) | 1999-12-22 |
WO2001030211A3 (en) | 2002-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20020517 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7A 47G 21/18 A Ipc: 7B 29C 63/40 B |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20051129 |