EP0391249B1 - Monofilaments from synthetic polymers - Google Patents
Monofilaments from synthetic polymers Download PDFInfo
- Publication number
- EP0391249B1 EP0391249B1 EP19900105980 EP90105980A EP0391249B1 EP 0391249 B1 EP0391249 B1 EP 0391249B1 EP 19900105980 EP19900105980 EP 19900105980 EP 90105980 A EP90105980 A EP 90105980A EP 0391249 B1 EP0391249 B1 EP 0391249B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- monofilaments
- weight
- monofilament
- dyes
- screen printing
- 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.)
- Expired - Lifetime
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/24—Stencils; Stencil materials; Carriers therefor
- B41N1/247—Meshes, gauzes, woven or similar screen materials; Preparation thereof, e.g. by plasma treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/06—Dyes
Definitions
- the invention relates to synthetic monofilaments Containing polymers for the production of screen printing fabrics Dyes and UV absorbers.
- monofilaments are made of polyester and polyamide for the production of stencils are known. These Filaments are translucent and contain 0.5 to 1% by weight of a UV absorber and color pigment and 0.01 up to 0.1% by weight of a titanium dioxide pigment. The degree of remission lies in the entire wavelength range of interest of the spectrum over 10%.
- the object of the invention is to provide a monofilament Screen printing fabrics made of synthetic polymers are available which has a reflectance of less than 10% with good transparency with as few pigments as possible or has none at all.
- the object is achieved in that the monofilaments have a reflectance ⁇ 10% in the wavelength range have between 340 and 460 nm.
- a polymer-soluble dye has the advantage that less Fibril breaks occur during spinning and one better thread quality results.
- a pigment-free monofilament results in razor-sharp contours of the screen printing stencils. It is appropriate that the monofilament in bulk 0.1 to 2.0% by weight, in particular 0.3 to 1.0% by weight, preferably 0.25 to 0.50% by weight of a polymer-soluble Dye included.
- Perinone and anthraquinone dyes have been found to be soluble dyes proven to be particularly suitable. These Dyes must have melting points above 200 ° C, in particular Have 300 ° - 420 °.
- UV absorbers have been preferred proven suitable, the benzotriazole and Contain benzophenone groups. Is particularly suitable for example 2- [2'-hydroxy-3 ', 5'-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] benzotriazole.
- the low reflectance values of the UV absorber between 300 and 350 nm ensure effective UV protection. By doing Range of long-wave UV radiation above 380 nm the reflectance values of the UV absorber rise above 10%, which by combination with polymer-soluble dyes can also be reduced below 10%.
- polyester or monofilaments Manufacture polyamide since both economically one Spun dyeing with dyes that are soluble in the melt can be.
- Polymers are included under polyester understand which are at least 85% by weight of polyethylene terephthalate units contain.
- Polyamides are preferred Polyhexamethylene adipamide and caprolactam polymers to understand. It is also possible to use the ones according to the invention Monofilaments made from other thermoplastic polymers such as making polypropylenes.
- the monofilament (Table Example No. 2) was made of polyester with 0.03% titanium dioxide using the same procedure prepared as in Example 1.
- polyester granules a mixture of 0.53% of a polymer soluble Yellow and red dye and 0.5% of the UV absorber, 2- [2'-hydroxy-3 ', 5'-bis ( ⁇ , ⁇ -dimethyl-benzyl) phenyl] benzotriazole added and at 290 ° C to the monofilament spun.
- the stretched yellow monofilament has a diameter of 0.03 mm.
- the monofilament was made of polyester with 0.03% titanium dioxide prepared by the same method as in Example 3.
- the colored monofilaments mentioned in Examples 1-4 were after the continuous dosing spin dyeing process produced. Thanks to the powder form, the UV absorber together with the dye powder directly into that Substrate are introduced.
- Examples 5 and 6 are comparative examples. example 5 is produced as in Example 1, but without dye; Example 6 contains neither dye nor UV absorber.
Description
Die Erfindung betrifft Monofilamente aus synthetischen Polymeren zur Herstellung von Siebdruckgeweben enthaltend Farbstoffe und UV-Absorber. The invention relates to synthetic monofilaments Containing polymers for the production of screen printing fabrics Dyes and UV absorbers.
Zur Herstellung von Siebdruckschablonen wird auf das Gewebe eine fotosensible Schicht aufgebracht. Die grösste spektrale Empfindlichkeit von Kopierschichten liegt im Bereich zwischen 360 und 450 nm. Für die Schablonenherstellung wird ein Diapositiv auf die beschichtete Gewebeseite gelegt und belichtet. Bei der Belichtung mit einem UV-Strahler werden die belichteten Stellen gehärtet, während die unbelichteten mit Wasser ausgewaschen werden. Erfahrungen haben gezeigt, dass ungefärbte Gewebe das UV-Licht teilweise reflektieren. Dadurch wird das Licht gestreut und das Diapositiv unterstrahlt. Die Uebergänge zwischen belichteten und unbelichteten Stellen werden unscharf, was eine Verschlechterung der Kopie bewirkt. For the production of screen printing stencils on the fabric applied a photosensitive layer. The largest spectral sensitivity of copying layers lies in the Range between 360 and 450 nm. For stencil production becomes a slide on the coated fabric side placed and exposed. When exposed to a UV lamps are cured during the exposed areas the unexposed are washed out with water. Experience has shown that undyed tissues use UV light partially reflect. This will scatter the light and the slide shines under. The transitions between exposed and unexposed areas become blurred, which causes the copy to deteriorate.
Gelb, orange und rot gefärbte Gewebe neigen viel weniger zu Unterstrahlung, weil das langwellige UV-Licht fast vollständig absorbiert wird. Man hat die Erfahrung gemacht, dass nicht jedes gelb, orange oder rot eingefärbte Gewebe einen genügenden Schutz gegen Unterstrahlung aufweist. Fabrics dyed yellow, orange and red tend to be much less inclined to under-radiation because the long-wave UV light is almost is completely absorbed. You have the experience that not every yellow, orange or red colored Fabric has sufficient protection against under-radiation.
Nach der US-A-4,749,611 sind Monofilamente aus Polyester und Polyamid zur Herstellung von Schablonen bekannt. Diese Filamente sind lichtdurchlässig und enthalten 0,5 bis 1 Gew. % eines UV-Absorbers und Farbpigmentes sowie 0,01 bis 0,1 Gew. % eines Titandioxidpigmentes. Der Remissionsgrad liegt im gesamten interessierenden Wellenlängenbereich des Spektrums über 10 %. According to US-A-4,749,611, monofilaments are made of polyester and polyamide for the production of stencils are known. These Filaments are translucent and contain 0.5 to 1% by weight of a UV absorber and color pigment and 0.01 up to 0.1% by weight of a titanium dioxide pigment. The degree of remission lies in the entire wavelength range of interest of the spectrum over 10%.
Die DE-B-27 08 789 beschreibt Farbmittel, welche sowohl aus anorganischen und organischen Pigmenten als auch aus löslichen Farbstoffen bestehen. Es werden sog. Masterbatchs für Spinnfärbungen eingesetzt, und zwar unter 200° C. Solche Farbkörpergranulate sind zur Herstellung von Monofilen für Siebdrucke wegen der ungenügenden Fadeneigenschaften nicht geeignet. DE-B-27 08 789 describes colorants which both from inorganic and organic pigments as well soluble dyes exist. So-called masterbatches used for spin dyeing, namely under 200 ° C. Such granular granules are used for the production of Monofilaments for screen printing due to the insufficient thread properties not suitable.
Die bekannten Monofile weisen jedoch für die anspruchsvollen Siebdruckschablonen immer noch zu hohe Remissionswerte auf, da sie bei der Reproduktionswiedergabe unscharfe Konturen hinterlassen. Auch die Herstellung der Monofile selbst ist offenbar durch einen zu hohen Anteil an Pigmenten schwierig, da insbesondere bei den feineren Titern untolerierbar viele Fadenbrüche auftreten. However, the well-known monofilaments point to the demanding Screen printing stencils still have high reflectance values because they are not clear when reproducing Leave contours. Even the manufacture of the Monofilament itself is obviously due to a too high proportion difficult with pigments, especially with the finer ones Titers intolerably many thread breaks occur.
Aufgabe der Erfindung ist es, ein Monofilament für ein Siebdruckgewebe aus synthetischen Polymeren zur Verfügung zu stellen, welches einen Remissionsgrad von weniger als 10 % bei guter Transparenz mit möglichst wenig Pigmenten oder gar keinen aufweist. The object of the invention is to provide a monofilament Screen printing fabrics made of synthetic polymers are available which has a reflectance of less than 10% with good transparency with as few pigments as possible or has none at all.
Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Monofilamente einen Remissionsgrad < 10 % im Wellenlängenbereich zwischen 340 und 460 nm aufweisen. According to the invention, the object is achieved in that the monofilaments have a reflectance <10% in the wavelength range have between 340 and 460 nm.
Ein polymerlöslicher Farbstoff hat den Vorteil, dass weniger Fibrillenbrüche beim Ausspinnen auftreten und eine bessere Fadenqualität resultiert. Ein pigmentfreies Monofil ergibt gestochen scharfe Konturen der Siebdruckschablonen. Es ist zweckmässig, dass die Monofile in der Masse 0,1 bis 2,0 Gew. %, insbesondere 0,3 bis 1,0 Gew. %, bevorzugt 0,25 bis 0,50 Gew. % eines polymerlöslichen Farbstoffes enthalten. A polymer-soluble dye has the advantage that less Fibril breaks occur during spinning and one better thread quality results. A pigment-free monofilament results in razor-sharp contours of the screen printing stencils. It is appropriate that the monofilament in bulk 0.1 to 2.0% by weight, in particular 0.3 to 1.0% by weight, preferably 0.25 to 0.50% by weight of a polymer-soluble Dye included.
Als lösliche Farbstoffe haben sich Perinon- und Anthrachinonfarbstoffe als besonders geeignet erwiesen. Diese Farbstoffe müssen Schmelzpunkte über 200° C, insbesondere 300° - 420° aufweisen. Perinone and anthraquinone dyes have been found to be soluble dyes proven to be particularly suitable. These Dyes must have melting points above 200 ° C, in particular Have 300 ° - 420 °.
An polymerlöslichen UV-Absorbern haben sich bevorzugt solche als geeignet erwiesen, die Benzotriazol- und Benzophenon-Gruppen enthalten. Besonders geeignet ist beispielsweise 2-[2′-hydroxy-3′,5′-bis(α,α-dimethylbenzyl)-phenyl]-benzotriazol. Polymer-soluble UV absorbers have been preferred proven suitable, the benzotriazole and Contain benzophenone groups. Is particularly suitable for example 2- [2'-hydroxy-3 ', 5'-bis (α, α-dimethylbenzyl) phenyl] benzotriazole.
Die niedrigen Remissionswerte des UV-Absorbers zwischen 300 und 350 nm sichern einen wirksamen UV-Schutz. In dem Bereich der langwelligen UV-Strahlung oberhalb 380 nm steigen die Remissionswerte des UV-Absorbers über 10 %, welche durch Kombination mit polymerlöslichen Farbstoffen zusätzlich unter 10 % herabgesetzt werden können. The low reflectance values of the UV absorber between 300 and 350 nm ensure effective UV protection. By doing Range of long-wave UV radiation above 380 nm the reflectance values of the UV absorber rise above 10%, which by combination with polymer-soluble dyes can also be reduced below 10%.
Es ist auch zweckmässig, die Monofile aus Polyester oder Polyamid herzustellen, da beide wirtschaftlich einer Spinnfärbung mit in der Schmelze lösbaren Farbstoffen unterzogen werden können. Unter Polyester sind Polymere zu verstehen, welche mindestens 85 Gew. % an Polyethylenterephthalat-Einheiten enthalten. Unter Polyamiden sind bevorzugt Polyhexamethylenadipamid- und Caprolactam Polymere zu verstehen. Es ist auch möglich die erfindungsgemässen Monofilamente aus anderen thermoplastischen Polymeren wie beispielsweise Polypropylenen herzustellen. It is also appropriate to use polyester or monofilaments Manufacture polyamide, since both economically one Spun dyeing with dyes that are soluble in the melt can be. Polymers are included under polyester understand which are at least 85% by weight of polyethylene terephthalate units contain. Polyamides are preferred Polyhexamethylene adipamide and caprolactam polymers to understand. It is also possible to use the ones according to the invention Monofilaments made from other thermoplastic polymers such as making polypropylenes.
Obwohl ohne Titandioxid die tiefsten Remissionswerte erzielt werden konnten, ist es zweckmässig, geringe Mengen, d.h. weniger als 0,3 Gew. % Titandioxid, insbesondere 0,005 - 0,01 Gew. % TiO₂ zu verwenden. Although the lowest remission values are achieved without titanium dioxide it is advisable to use small amounts, i.e. less than 0.3% by weight titanium dioxide, in particular 0.005 - 0.01 wt.% TiO₂ to use.
Es ist zweckmässig, Monofilamente mit einem Durchmesser von 0,02 bis 0,10 mm, insbesondere 0,02 - 0,05 mm zu verwenden. It is appropriate to use monofilaments with a diameter from 0.02 to 0.10 mm, in particular 0.02 - 0.05 mm.
Es ist von Vorteil, Siebdruckgewebe mit einem Remissionsgrad von weniger als 10 %, insbesondere weniger als 5 % und bevorzugt weniger als 4 % im Wellenlängenbereich, zwischen 340 und 460 nm zu verwenden. Dadurch ist es gelungen, einen sehr guten Unterstrahlungsschutz neben guter Transparenz zu erreichen. It is advantageous to use screen printing fabrics with a reflectance level less than 10%, especially less than 5% and preferably less than 4% in the wavelength range, between 340 and 460 nm. This has made it possible very good protection against under-radiation to achieve good transparency.
Die Erfindung soll anhand von Beispielen näher beschrieben werden. The invention will be described in more detail by means of examples will.
Kurz vor dem Spinnextruder wurde zum Ti0₂-freien Polyester-Granulat mit einer intrinsischen Viskosität von 0,67 dl/g eine Mischung aus 0,45 % eines polymerlöslichen Gelb- und Rotfarbstoffes und 0,5 % des UV-Absorbers, 2-[2′-hydroxy-3′,5′-bis(α,α-dimethyl-benzyl)-phenyl]-benzotriazol zudosiert und bei 290°C zum Monofilament versponnen. Das verstreckte orange Monofilament hat einen Durchmesser von 0,03 mm. Shortly before the spinning extruder became Ti0₂-free polyester granules with an intrinsic viscosity of 0.67 dl / g a mixture of 0.45% of a polymer soluble Yellow and red dye and 0.5% of the UV absorber, 2- [2'-hydroxy-3 ', 5'-bis (α, α-dimethyl-benzyl) phenyl] benzotriazole added and spun at 290 ° C to the monofilament. The stretched orange monofilament has one Diameter of 0.03 mm.
Das Monofilament (Tabellen-Beispiel Nr. 2) wurde aus Polyester mit 0,03 % Titandioxyd nach dem gleichen Verfahren wie im Beispiel 1 hergestellt. The monofilament (Table Example No. 2) was made of polyester with 0.03% titanium dioxide using the same procedure prepared as in Example 1.
Kurz vor dem Spinnextruder wurde zum Ti0₂-freien Polyester-Granulat eine Mischung aus 0,53 % eines polymerlöslichen Gelb- und Rotfarbstoffes und 0,5 % vom UV-Absorber, 2-[2′-hydroxy-3′,5′-bis(α,α-dimethyl-benzyl)-phenyl]-benzotriazol zudosiert und bei 290°C zum Monofilament versponnen. Das verstreckte gelbe Monofilament hat einen Durchmesser von 0,03 mm. Shortly before the spinning extruder became Ti0₂-free polyester granules a mixture of 0.53% of a polymer soluble Yellow and red dye and 0.5% of the UV absorber, 2- [2'-hydroxy-3 ', 5'-bis (α, α-dimethyl-benzyl) phenyl] benzotriazole added and at 290 ° C to the monofilament spun. The stretched yellow monofilament has a diameter of 0.03 mm.
Das Monofilament wurde aus Polyester mit 0,03 % Titandioxyd nach dem gleichen Verfahren wie im Beispiel 3 hergestellt. The monofilament was made of polyester with 0.03% titanium dioxide prepared by the same method as in Example 3.
Die Ergebnisse der Remissionsmessungen an den erfindungsgemässen
Monofilamenten bzw. Geweben sind in der folgenden
Tabelle zusammengefasst:
Die in den Beispielen 1 - 4 erwähnten farbigen Monofilamente wurden nach dem kontinuierlichen Dosierspinnfärbeverfahren hergestellt. Dank der Pulverform kann der UV-Absorber zusammen mit dem Farbstoffpulver direkt in das Substrat eingebracht werden. The colored monofilaments mentioned in Examples 1-4 were after the continuous dosing spin dyeing process produced. Thanks to the powder form, the UV absorber together with the dye powder directly into that Substrate are introduced.
Die Beispiele 5 und 6 sind Vergleichsbeispiele. Beispiel 5 ist wie Beispiel 1 hergestellt, jedoch ohne Farbstoff; Beispiel 6 enthält weder Farbstoff noch UV-Absorber. Examples 5 and 6 are comparative examples. example 5 is produced as in Example 1, but without dye; Example 6 contains neither dye nor UV absorber.
Durch den kombinierten Einsatz von polymerlöslichen Farbstoffen und UV-Absorber auf Basis Benzotriazole und Benzophenone in Polyestergewebe ohne Titandioxyd lässt sich aufgrund extrem tiefer Remission und hoher Transparenz ein besonders wirksamer Unterstrahlungsschutz bei der Herstellung von Siebdruckgeweben erzielen. Through the combined use of polymer-soluble dyes and UV absorbers based on benzotriazoles and benzophenones in polyester fabric without titanium dioxide due to extremely deep remission and high transparency a particularly effective under-radiation protection at Achieve the production of screen printing fabrics.
Claims (6)
- Monofilaments of synthetic polymers for manufacturing screen printing fabrics, containing dyes and UV absorbers, characterized by a reflectance < 10 % in the wavelength region between 340 and 460 nm.
- Monofilaments according to Claim 1, characterized in that the monofilaments contain in the mass from 0.1 to 2.0 % by weight of a polymer-soluble dye and from 0.1 to 0.5 % by weight of a UV absorber.
- Monofilaments according to Claim 2, characterized in that the dyes have a melting point from 200° to 420°C.
- Monofilaments according to Claims 1 and 2, characterized in that the monofilaments contain < 0.3 % by weight of titanium dioxide.
- Monofilaments according to Claims 1-3, characterized in that the diameter of the monofilament is 0.02-0.10 mm.
- Monofilaments according to Claim 1, characterized in that the monofilaments consist of polyester, polyamide or polypropylene.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH120989 | 1989-04-03 | ||
| CH1209/89 | 1989-04-03 | ||
| CH120989 | 1989-04-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0391249A1 EP0391249A1 (en) | 1990-10-10 |
| EP0391249B1 true EP0391249B1 (en) | 1994-06-01 |
| EP0391249B2 EP0391249B2 (en) | 2002-01-02 |
Family
ID=4205060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900105980 Expired - Lifetime EP0391249B2 (en) | 1989-04-03 | 1990-03-29 | Monofilaments from synthetic polymers |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0391249B2 (en) |
| DE (1) | DE59005870D1 (en) |
| ES (1) | ES2056282T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020067224A1 (en) * | 2018-09-27 | 2020-04-02 | 東レ株式会社 | Polyester monofilament for screen cloth and woven mesh fabric for direct digital platemaking |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2708789C2 (en) * | 1977-03-01 | 1979-01-25 | Kazmer Paris Fejer | Spin dyeing of polyester or polyamide fibers |
| JPH0446941Y2 (en) * | 1985-08-02 | 1992-11-05 |
-
1990
- 1990-03-29 ES ES90105980T patent/ES2056282T3/en not_active Expired - Lifetime
- 1990-03-29 EP EP19900105980 patent/EP0391249B2/en not_active Expired - Lifetime
- 1990-03-29 DE DE59005870T patent/DE59005870D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0391249A1 (en) | 1990-10-10 |
| ES2056282T3 (en) | 1994-10-01 |
| EP0391249B2 (en) | 2002-01-02 |
| DE59005870D1 (en) | 1994-07-07 |
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