EP0526568A1 - Paper for ink spray using compressed air pressure and layer so obtained - Google Patents
Paper for ink spray using compressed air pressure and layer so obtainedInfo
- Publication number
- EP0526568A1 EP0526568A1 EP19910909148 EP91909148A EP0526568A1 EP 0526568 A1 EP0526568 A1 EP 0526568A1 EP 19910909148 EP19910909148 EP 19910909148 EP 91909148 A EP91909148 A EP 91909148A EP 0526568 A1 EP0526568 A1 EP 0526568A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet according
- layer
- binder
- sheet
- starch
- 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- Withdrawn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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
Definitions
- the invention relates to a sheet for fine and graphic arts. It relates more particularly to a fibrous sheet carrying a layer which improves the color rendering of the inks applied in particular using an instrument called an "airbrush". The invention further relates to the layer deposited on a sheet.
- An airbrush is a sprayer which projects, under the pressure of compressed air, colored or pigmented inks, of a very low viscosity and a surface tension lower than that of water, in the form of a homogeneous mist constituted very fine droplets. This mist is projected onto a sheet of paper to produce art drawings, advertising posters, for example.
- the sheet and / or its surface must have the following specific properties: rigidity, internal cohesion and resistance to delamination very high, strong affinity with the adhesives of the masks, aptitude for scraping.
- these sheets being intended for the field of art, it is very important that the color rendering is good.
- the color rendering is characterized by the optical density of these colors, as well as by the preservation of the original shade. It is necessary that the color (its brightness, its intensity, its purity) of the ink chosen by the artist is restored as faithfully as possible after spraying on the sheet. Another specificity of this sheet is therefore to have a good rendering of the colors of the airbrush inks.
- drawing papers whose surface condition has been improved by treatment with a bonding agent or by calendering and which have good internal cohesion to resist tearing off the adhesive masks. These papers are not very absorbent and the color rendering is poor.
- pigments and binders that can be used to make such a layer is very wide. Pigments are most often mineral fillers, sometimes plastic pigments.
- the binders can be chosen from starch, casein, animal glue, polyvinyl alcohol, natural or synthetic latex, etc.
- One of the difficulties is to formulate a pigment-binder layer whose affinity for the adhesives of the masks is high enough for the masks to adhere well, but not too high to be peeled off without delaminating the layer of the support or destroy the support. It is therefore also necessary that the affinity layer-support is high to avoid delamination layer-support when taking off the masks. The layer must also absorb the inks without burying them. Another difficulty is to formulate a pigment-binder layer which is removable.
- the object of the invention is therefore to overcome the defects of the sheets currently used for airbrushing and to solve the difficulties in formulating the pigmented layer specially linked to the use of these sheets.
- the invention therefore aims to provide a coated sheet for an airbrush which simultaneously has the following properties:
- the Applicant has succeeded in achieving the object of the invention by producing a sheet consisting of a fibrous support of high grammage, preferably greater than 120 g / m 2 and of high internal cohesion, preferably greater than 620 Nm, this support being coated on at least one of its faces with a pigmented layer comprising at least one filler whose BEI specific surface is greater than 100 m 2 / g and at least one water-soluble binder.
- the BET specific surface represents the total specific surface of the load. It is measured according to DIN 66 131.
- the BET specific surface of the load is preferably greater than 200 m 2 / g.
- the filler is a mineral filler chosen from silicas, silicates, silicoaluminates or their mixtures.
- the binder is preferably chosen from the group formed by polyvinyl alcohol, optionally carboxylated or silylated, starch possibly etherified or esterified or oxidized, casein, etherified or esterified cellulose or their mixtures.
- the binder / filler ratio of the pigmented layer can be between 0.3 and 0.6, by dry weight.
- the amount of pigmented layer deposited on the surface of the sheet is at least 5 g / m 2 , preferably more than 10 g / m z .
- the fibrous support is obtained by the papermaking route from a composition mainly containing cellulose fibers and at least one reinforcing agent and at least one bonding agent.
- the reinforcing agent is preferably a pregelatinized starch or a compound based on aminoplast resin or mixtures thereof. This agent makes it possible to have a high internal cohesion of the support.
- the sizing agent may for example be a rosin derivative, an alkyl ketene dimer or a sodium stearate or their mixtures. This bonding agent improves the quality of the coating which is made subsequently, in particular the water retention in the layer.
- the cellulose fibers are very refined.
- the fibrous composition may include other adjuvants usually used in stationery or opacifying fillers.
- the support can be surface-treated in a press-sizing machine, with a composition containing a binder chosen from the group formed by polyvinyl alcohol (PVA), carboxylated PVA, silylated PVA, starch, etherified starch, l esterified starch, etherified cellulose, esterified cellulose, gelatin, casein or mixtures thereof.
- PVA polyvinyl alcohol
- carboxylated PVA carboxylated PVA
- silylated PVA starch
- etherified starch etherified starch
- l esterified starch etherified cellulose
- esterified cellulose esterified cellulose
- the invention also relates to a composition for the treatment of at least one face of an airbrush sheet to increase color rendering, which is characterized in that it comprises at least one absorbent filler having a high specific surface, preferably greater than 200 m / g and at least one water-soluble binder, in a binder / filler ratio preferably between 0.3 and 0.6, by dry weight.
- This composition is carried out in an aqueous medium. It can include other adjuvants, for example viscosity modifiers or opacifying fillers.
- This composition is deposited on the support using a coating means usually used in stationery, such as "reverse-roll”, “champion”, “Bill-Blade” coater, drag blade or air knife .
- the sheet for airbrush according to the invention can be laminated on another sheet or on a cardboard.
- this sheet is also well suited to other means used to make drawings such as tubular tips, pencils, charcoal, red chalk, pastels, brush painting with different mediums: aqueous inks, lacquers, oils , acrylics.
- the sheet is erasable.
- the support is produced on a paper machine from an aqueous suspension of cellulose fibers containing a bonding (sodium stearate) and 11% by dry weight of a mixture of reinforcing agents (pregelatinized starch / melamine resin - formaldehyde).
- the support is treated using a size press with a gelatin bath.
- the grammage is 250 g / m 2 .
- Silylated PVA This is the PVA R1130 manufactured by
- the dry extract of the composition is 18.25%.
- the binder / filler ratio, by dry weight, is 0.46.
- the support is coated with the composition obtained using a MEYER bar number 0.8.
- the sheet is dried in an oven.
- the amount deposited is 11 g / m 2 dry.
- the optical density (OD) of the colors is measured.
- the results are given in Table I, in comparison with sheets currently used for the airbrush.
- the D.O. values obtained show that the color rendering is significantly improved with the sheet according to the invention.
- Self-adhesive masks are applied to part of the sheet and the ink is sprayed. It is found that the masks adhere well to the sheet according to the invention; they are not lifted by the force of the compressed air projected by the airbrush.
- the layer has a good ability to scrape; it leaves in the form of a very fine powder.
- the dry extract of the composition is 18.25 X.
- the binder / filler ratio, by dry weight, is 0.46.
- the support is coated with the composition obtained using a MEYER bar number 0.8.
- the sheet is dried in an oven.
- the amount deposited is 10.8 g / m 2 dry.
- Example 1 The sheet thus obtained is tested, as in Example 1. The same conclusions are drawn as in Example 1. The values of optical density are given in Table II.
- the sheet thus obtained makes it possible to achieve the object of the invention (rigidity, high color rendering, resistance to self-adhesive masks, ability to scrape).
- optical densities are measured with an X-RITE R 418 densitometer; these are absolute measurements (zero adjustment on uncoloured paper).
- Example 1 is reproduced by replacing the water-soluble binder with binders in the form of latex (therefore non-water-soluble), the binder / filler ratio always being equal to 0.46. To lay the support, use a MEYER bar n ° 0.2.
- Example 3 The binder is a VINAMUL R 34297 sold by VINAMUL NATIONAL. It is a latex of an ethylene / vinyl acetate / vinyl chloride terpolymer.
- Example 4 The binder is an ACRONAL S 305D sold by BASF. It is an anionic aqueous dispersion of a copolymer of acrylates.
- Example 5 The binder is a RHODOPAS SB 123 sold by RHONE-POULENC. It is a latex of a styrene-butadiene copolymer.
- the layer can be scraped off, but it tends to break down in the form of chips and not in the form of a fine powder.
- Latexes are therefore not suitable as binders for carrying out the present invention.
Abstract
L'invention concerne une feuille pour beaux-arts et arts graphiques, notamment pour la technique utilisant un pulvérisateur projetant des encres au moyen d'air comprimé. Elle est constituée d'un support fibreux de grammage et de cohésion interne élevés, revêtu sur au moins une face d'une couche pigmentée comprenant une charge de surface spécifique élevée et au moins un liant hydrosoluble.The invention relates to a sheet for fine and graphic arts, in particular for the technique using a sprayer projecting inks by means of compressed air. It consists of a fibrous support of high grammage and internal cohesion, coated on at least one face with a pigmented layer comprising a high specific surface charge and at least one water-soluble binder.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9005242A FR2661432B1 (en) | 1990-04-25 | 1990-04-25 | PAPER FOR SPRAYER SPRAYING INKS UNDER THE COMPRESSED AIR PRESSURE AND LAYER DEPOSITED ON SUCH PAPER. |
FR9005242 | 1990-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0526568A1 true EP0526568A1 (en) | 1993-02-10 |
Family
ID=9396053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910909148 Withdrawn EP0526568A1 (en) | 1990-04-25 | 1991-04-25 | Paper for ink spray using compressed air pressure and layer so obtained |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0526568A1 (en) |
FR (1) | FR2661432B1 (en) |
WO (1) | WO1991016494A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59185690A (en) * | 1983-04-07 | 1984-10-22 | Jujo Paper Co Ltd | Ink jet recording paper |
US4758461A (en) * | 1986-12-05 | 1988-07-19 | Canon Kabushiki Kaisha | Recording paper and ink jet recording method by use thereof |
-
1990
- 1990-04-25 FR FR9005242A patent/FR2661432B1/en not_active Expired - Fee Related
-
1991
- 1991-04-25 EP EP19910909148 patent/EP0526568A1/en not_active Withdrawn
- 1991-04-25 WO PCT/FR1991/000339 patent/WO1991016494A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9116494A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2661432B1 (en) | 1993-06-04 |
FR2661432A1 (en) | 1991-10-31 |
WO1991016494A1 (en) | 1991-10-31 |
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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: 19920926 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES GB GR IT LI LU NL SE |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ARJO WIGGINS S.A. |
|
17Q | First examination report despatched |
Effective date: 19940302 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ARJO WIGGINS S.A. |
|
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: 19950627 |