WO2003106050A2 - Aufreissstreifen sowie verfahren und vorrichtung zu dessen herstellung - Google Patents
Aufreissstreifen sowie verfahren und vorrichtung zu dessen herstellung Download PDFInfo
- Publication number
- WO2003106050A2 WO2003106050A2 PCT/DE2003/002053 DE0302053W WO03106050A2 WO 2003106050 A2 WO2003106050 A2 WO 2003106050A2 DE 0302053 W DE0302053 W DE 0302053W WO 03106050 A2 WO03106050 A2 WO 03106050A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- silicone
- pressure sensitive
- sensitive adhesive
- tear strip
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/201—Adhesives in the form of films or foils characterised by their carriers characterised by the release coating composition on the carrier layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/10—Presence of homo or copolymers of propene
- C09J2423/106—Presence of homo or copolymers of propene in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
- C09J2483/005—Presence of polysiloxane in the release coating
Definitions
- the invention relates to tear strips which are suitable for opening packaging or wrappings made of film packaging, such as cigarette packs. Such tear strips adhere to the surface of the film packaging in such a way that the packaging film can be torn open by grasping a free end and pulling on the tear strip.
- the invention relates to a method for producing a tear strip, a device for carrying out the method and a novel tear strip.
- Tear strips made of monoaxially oriented or stretched polypropylene (MOPP) or polyester are known, a thickness of 40 ⁇ m and a width of 1.5 to 10 mm being customary.
- the starting material in the form of a film web which can have a width of, for example, 1000 mm, is first primed with a printing ink primer, if appropriate, and then printed in the desired manner.
- the surface of the film web opposite the printed side is provided with a separating layer, for which purpose a solvent-containing silicone is used in the prior art, which is applied by rotogravure printing.
- the film is then treated with an adhesive primer on the printed side and then coated with an aqueous adhesive (acrylate) using the rotogravure process.
- the finished coated film is then wound up in roll form and cut on a separate cutting machine.
- the solvent content of the silicone used is unfavorable and not unproblematic, since the solvent must first be removed from the silicone by drying at an elevated temperature (about 130 ° C.), disposed of in an environmentally neutral manner by post-combustion, and also in production in the sense of being safe Appropriate measures are required in the work environment.
- the technology of application on the one hand the silicone and on the other hand the adhesive using rotogravure printing because of the high cost of the printing cylinder, which is economically unfavorable.
- the object of the invention is to provide a method and a device for its implementation, with which or with which the disadvantages mentioned are avoided and tear strips can be produced in a more environmentally friendly and cost-effective manner.
- the object of the invention is also to provide an improved tear strip which can be produced in a more cost-effective and environmentally friendly manner than previously.
- Fig. 1 shows a schematic side view of a coating system for film material for the production of tear strips.
- a monoaxially oriented and possibly stretched polypropylene film 1 (MOPP film) with a thickness of 26 ⁇ m is printed from a roll 2 in advance in accordance with the respective customer request and passes through a tension control 4 with a spring-loaded one or in some other way a dancer roller 5 loaded with force onto a cutting table 6.
- a turntable 8 serves for edge control of the film web, which is guided to a silicone applicator 16 via further deflection rollers 10, 12 and via rubberized stretching rollers 14. Due to a speed difference between the unwinding speed of the film web 1 and the peripheral speed of the stretching rollers 14, the film is axially stretched as it passes through the system.
- the film web 1 is flexographically coated with solvent-free silicone that can be crosslinked or polymerized by means of ultraviolet radiation, whereby it extends between a printing or application roller 18 and a plate cylinder 20. is moved through. There is a speed difference between the peripheral speed of the printing roller 18 and the throughput speed of the film web 1 for the purpose of making the job more uniform.
- the advantage of flexographic coating is that the job is transferred using a rubber plate (cliché), which can be manufactured quickly and relatively inexpensively and is therefore well suited for flexible production even of smaller runs.
- the silicone coated in the silicone applicator 16 contains 1-4%, preferably 2-3%, of a photoinitiator (for example 2-hydroxy-2-methyl-l-phenyl-propane-l-one) with which crosslinking of the UN silicone used is possible by irradiation with ultraviolet light.
- a photoinitiator for example 2-hydroxy-2-methyl-l-phenyl-propane-l-one
- a corona nore-treatment (not shown) can be carried out in order to ensure good anchorage and good wetting behavior of the silicone on the film material.
- the coated film web then passes into a UN inert chamber 22, in which the silicone is crosslinked.
- the photolytic degradation of the photoinitiator generates a high concentration of radicals, which are necessary for chain expansion.
- the reaction is completed within milliseconds so that high processing speeds are possible e.g. 150 m / min and more.
- An inlet lock and a special slot nozzle are used as part of the procedure according to the invention , so that it is ensured that the boundary layer on the film is safely exchanged for a nitrogen atmosphere even at high production speeds.
- a labyrinth seal is arranged on the outlet side to minimize nitrogen consumption.
- the residual nitrogen that still escapes contributes to the flushing of the chamber since it carries traces of volatile reaction components to the outside.
- An oxygen measurement is carried out at a representative location within the inert chamber, with the aid of which regulation of the residual oxygen content is possible.
- a stepless power and dose control in connection with high lamp power eg up to 240 W / cm) ensures that the UV dose radiating on the material can be kept constant.
- the coated and crosslinked film web 1 emerging from the inert chamber 22 then arrives in an adhesive application unit 24 in which a transparent hotmelt adhesive (hotmelt adhesive, hotmelt adhesive) is applied by means of a slot die.
- a transparent hotmelt adhesive hotmelt adhesive, hotmelt adhesive
- the pressure sensitive adhesive is, in particular, an adhesive based on synthetic rubber, which is supplied in block form or as granules and heated to approx. 170 ° C in a tank.
- the adhesive is highly adhesive and has a softening point of between 105 ° C and 115 ° C.
- the application takes place via a nozzle gap with a width corresponding to the width of the film web 1 without contact between the nozzle and the film, the temperature of the adhesive when it emerges from the slot die being approximately 130 to 150 ° C. and in the free fall of the adhesive in the direction of the Film, i.e. before film contact, already goes back.
- the adhesive used e.g. Euromelt 707-23 or Technomelt Q 8707-273 has an average viscosity of 15000 mPa.s at 150 ° C and an average viscosity of about 4000 mPa.s at 180 ° C.
- the application quantity can be approximately 12 g / m 2 , a reduction to approximately 6 to 8 g / m 2 and below being possible.
- the coating of the film web by means of hot-melt adhesive shown is not absolutely necessary within the scope of the invention, but it can alternatively be provided to coat the film material in a conventional manner with a (water-soluble) acrylate adhesive, for example using the gravure printing process.
- the film web 1 which is now coated on both sides, passes via an edge control (optionally, by means of a turntable 26) to a pulling and cutting unit 28, in which the film web 1 is cut into a number of narrower film strips by means of a squeeze cut, which in spatially offset winding stations 30 are wound up by means of friction waves, which serve to stabilize and calm the core, in particular at the start of the winding process.
- edge control optionally, by means of a turntable 26
- a pulling and cutting unit 28 in which the film web 1 is cut into a number of narrower film strips by means of a squeeze cut, which in spatially offset winding stations 30 are wound up by means of friction waves, which serve to stabilize and calm the core, in particular at the start of the winding process.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003250756A AU2003250756A1 (en) | 2002-06-14 | 2003-06-13 | Tear-off strip and method and device for the production thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10226748.0 | 2002-06-14 | ||
DE10226748A DE10226748A1 (de) | 2002-06-14 | 2002-06-14 | Aufreißstreifen sowie Verfahren und Vorrichtung zu dessen Herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003106050A2 true WO2003106050A2 (de) | 2003-12-24 |
WO2003106050A3 WO2003106050A3 (de) | 2004-05-13 |
Family
ID=29719118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/002053 WO2003106050A2 (de) | 2002-06-14 | 2003-06-13 | Aufreissstreifen sowie verfahren und vorrichtung zu dessen herstellung |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003250756A1 (de) |
DE (1) | DE10226748A1 (de) |
WO (1) | WO2003106050A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10384430B2 (en) | 2015-07-28 | 2019-08-20 | Sml Maschinengesellschaft M. B. H. | Method and device for the production of a water vapor permeable laminar sheet |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1375887A (de) * | 1972-07-22 | 1974-11-27 | ||
DE3029247A1 (de) * | 1979-08-03 | 1981-02-19 | Gen Electric | Uv-haertbare siliconueberzugsmassen, verfahren zu deren herstellung und deren verwendung |
US4447499A (en) * | 1983-05-09 | 1984-05-08 | Dow Corning Corporation | Method of coating substrates with polydiorganosiloxanes having lower alkyl substituents to provide release coatings |
DE4402444A1 (de) * | 1994-01-27 | 1995-08-03 | Minnesota Mining & Mfg | Reißfestes Klebeband auf der Basis von monoaxial orientiertem Polyethylen |
WO1998033859A1 (en) * | 1997-02-04 | 1998-08-06 | Moore Business Forms, Inc. | Printable linerless labels |
-
2002
- 2002-06-14 DE DE10226748A patent/DE10226748A1/de not_active Withdrawn
-
2003
- 2003-06-13 AU AU2003250756A patent/AU2003250756A1/en not_active Abandoned
- 2003-06-13 WO PCT/DE2003/002053 patent/WO2003106050A2/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1375887A (de) * | 1972-07-22 | 1974-11-27 | ||
DE3029247A1 (de) * | 1979-08-03 | 1981-02-19 | Gen Electric | Uv-haertbare siliconueberzugsmassen, verfahren zu deren herstellung und deren verwendung |
US4447499A (en) * | 1983-05-09 | 1984-05-08 | Dow Corning Corporation | Method of coating substrates with polydiorganosiloxanes having lower alkyl substituents to provide release coatings |
DE4402444A1 (de) * | 1994-01-27 | 1995-08-03 | Minnesota Mining & Mfg | Reißfestes Klebeband auf der Basis von monoaxial orientiertem Polyethylen |
WO1998033859A1 (en) * | 1997-02-04 | 1998-08-06 | Moore Business Forms, Inc. | Printable linerless labels |
Also Published As
Publication number | Publication date |
---|---|
WO2003106050A3 (de) | 2004-05-13 |
AU2003250756A8 (en) | 2003-12-31 |
AU2003250756A1 (en) | 2003-12-31 |
DE10226748A1 (de) | 2004-01-08 |
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