EP0614502A1 - Cardboard with coating on one side. - Google Patents
Cardboard with coating on one side.Info
- Publication number
- EP0614502A1 EP0614502A1 EP92923153A EP92923153A EP0614502A1 EP 0614502 A1 EP0614502 A1 EP 0614502A1 EP 92923153 A EP92923153 A EP 92923153A EP 92923153 A EP92923153 A EP 92923153A EP 0614502 A1 EP0614502 A1 EP 0614502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- weight
- binder
- carton according
- total
- 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.)
- Granted
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
- D21H19/02—Metal coatings
-
- 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
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
- D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
Definitions
- the present invention relates to a carton with a coating applied on one side by means of a cast coating process, a process for its production and its use.
- a paper or cardboard is produced with a die-casting method Layer used.
- the layer consists of a synthetic resin binder which does not form a film at normal temperature, the particles of which are melted between 71 ° C. and 99 ° C. to form a hard and glossy, continuous film during the casting process.
- the layer can also be applied to a base layer which, in addition to filler, contains one of the customary synthetic resin binders.
- a part of the synthetic resin binder to be used in the base layer can also be replaced by natural binders, so that 10 to 30% by weight of the total binder content of the base layer from e.g. B. starch, modified starch, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose and similar substances.
- the so-called “direct method”, as described above for DE-B-1233248, is specified and also the “indirect method”, in which the coating composition is applied to the high-gloss cylinder and the dry one before it is dried Paper is brought into contact with the still wet film, which is absorbed by the paper and pulled off the drum.
- DE-B-2310891 is not the casting process known from DE-A-1233248 (also called the direct method). Rather, here at the same time
- Polymers contained coating initially Part of the water evaporated and the film formed at a temperature above 100 ° C under a minimum pressure of 5 kp / cm against a high gloss cylinder.
- an anti-sticking agent can be added to the coating composition.
- Sodium carboxymethyl cellulose, methyl cellulose, polyvinyl alcohol and polyvinyl pyrrolidone in amounts up to 10% based on the weight of the main polymer.
- the usual precoatings known from paper production, with and without pigment addition, are provided as the base layer.
- a metallized paper is known from EP-B-98368, in which the layer intended for metallization is shaped under similar process conditions as specified for DE-B-2310891.
- the coating composition contains 5 to 25 parts by weight of film-forming binder, based on 100 parts by weight of pigment, and thus has the pigment / binder ratio of the conventional paper coatings.
- This proposal is intended to eliminate the disadvantage which hitherto existed, which consisted in the fact that the coating surface intended for metallization first had to be provided with a pre-coating based on organic solvents.
- the proposal according to EP-B-98368 is not free from disadvantages either, because the coating to be metallized must have a minimum quantity of 10 g / m, preferably with an application weight of 18 to 26
- the object of the present invention is now to provide a one-sided coated line cardboard using inexpensive coating raw materials, which due to its high gloss, smoothness and closeness should be used where a decorative impression is desired.
- the invention sees a special task in the formation of a line which is a direct metallization, i. H. Permitted without pre-painting with a varnish based on organic solvents, so that a product of the highest smoothness with high gloss and metallic appearance results.
- the invention also intends to provide a cardboard box which can be printed by means of gravure printing in the non-metallic state and - at least with special printing inks - in offset printing. The printed product should have a good color balance and high print gloss.
- the present invention provides, in the case of a cardboard box having a line applied on one side by means of a cast coating method, that the cardboard box is on the side intended for receiving the line before the line is applied
- cardboard means a flat structure, that is to say a cardboard web or a cardboard sheet.
- the carton is single-ply, in particular a carton is preferred, the pulp mass of which consists of 100% by weight of pulp fibers, based on the pulp mass.
- Another preferred embodiment provides for the admixture of up to 5% by weight of wood pulp fibers, based on the total fiber mass of a single-ply carton.
- a multi-layer cardboard can also be used, but it is necessary that the cardboard has a cover layer, the fibrous mass of which consists of 100% by weight of cellulose, or up to max . 5% by weight wood pulp fibers, rest: cellulose fibers are present.
- the top layer serves to apply the coat by means of the cast coating process.
- a cardboard is preferably used, the surface area of which is between 1150 and 350 g / m 2, calculated as the pulp mass.
- a carton is used in which the required
- Water absorption capacity of 25 to 40 g / m 2 during 60 seconds was adjusted according to Cobb by soaking the cardboard with a synthetic resin binder before applying the cast coating and treating it on a soft or satin calender after drying.
- Plastic dispersions based on butadiene-styrene, acrylic resin, methacrylic resin based, based on polyvinyl acetate or polyvinyl alcohol solutions and mixtures thereof are particularly suitable as synthetic resin binders.
- polyacrylamide has also proven to be very suitable.
- the amount of synthetic resin binder to be applied is and, 1 g / m 2 and max. 10 g / m ?.
- a coating consisting of one or more superimposed layers can also be applied to the side provided for receiving the cast coating, which coating consists of a film-forming synthetic resin binder and / or natural binder composition and the coating formed to form the desired surface properties ten is satin.
- This coating can be produced with the usual coating devices of the paper and cardboard industry; in addition, the coating still contain mineral pigment or dyes.
- the thickness of the cardboard should be in the range from 145 to 400 ⁇ m after impregnation with synthetic resin binder and the subsequent satinizing, preferably the thickness is not greater than 370 ⁇ m.
- mineral pigment may also be present in the cardboard, preferably in the range from 9 to 13% by weight, expressed as ash content, based on the total mass per unit area of the cardboard.
- the proportion of the natural binder in the coat applied on one side by means of a cast coating process is 20 to 35% by weight, based on the total binder content.
- the smoothness of the side of the cardboard intended to receive the cast line should be at least 50 Bekk-sec. lie, preferably the Bekk smoothness is> 150 sec.
- the amount of the coating applied by means of a casting process is m d. 5 g / m 2, but preferably at more than 10 to max. 15 g / m .2
- the application of lower coat weights - calculated as dry weight fractions - can lead to the result that the surface of the cardboard produced does not have the closed structure and the desired high gloss, which according to a preferred embodiment is 88 to 98% - measured at an angle from 75 Degrees (according to Lehmann) - lies.
- the coating applied by means of a cast coating process consists at least of 90% by weight only of binders and, moreover, only contains the usual auxiliaries which are used for casting coating, that is to say e.g. B. release agents such. B. calcium stearate or one of the usual thickening agents on a natural or synthetic basis.
- the invention also encompasses a method of making a high gloss, glossy cardboard coated on one side.
- a raw cardboard is impregnated with an impregnating liquid containing or consisting of a synthetic resin binder, dried and satinized with a super or soft calender.
- a composition is applied to the satin surface, which consists of a film-forming synthetic resin binder, a natural binder in an amount of 20 to 60% by weight, based on the total binder content, remainder: thickening aids and / or release agents and / or crosslinking aids in an amount of in total there is no more than 10% by weight, based on the total binder content, and the applied coat is leveled and with a heated high-gloss cylinder with simultaneous drying Formation of a high-gloss surface contacted.
- the raw cardboard instead of impregnating the raw cardboard with a synthetic resin binder, the raw cardboard is coated by coating it with one or more layers with a composition containing or consisting of a film-forming binder and / or natural binder, and the coating formed is dried and satinized.
- a cast line is then applied in the manner described above. After each of the two processes, a cast line is formed, which can be called a less porous, closed film layer.
- the film-forming synthetic resin binders to be used to form the cast coating have film-forming temperatures of ⁇ 40 ° C., preferably even ⁇ 30 ° C., and come in the form of aqueous dispersions, preferably based on the polymers and copolymers of acrylic acid esters, methacrylic acid esters, butadiene-styrene, vinyl acetate and vinylidene chloride.
- the raw cardboard is impregnated with synthetic resin binder, this is preferably already done in the paper machine, e.g. B. in a size press.
- the cardboard web is provided with a coating, the same film-forming synthetic resin binders as for the casting coating are preferably used for this purpose, but synthetic resin binders with a higher film-forming temperature can also be used here if necessary come.
- Cellulose derivatives such as carboxymethyl cellulose, hydroxyethyl cellulose, preferably casein and starch, modified starch and mixtures of the above-mentioned natural binders serve as natural binders for producing the coating and the cast coating.
- the proportion of the natural binder in the coating is preferably not more than 70% by weight, very particularly preferably in a range between 10 and 50% by weight, in each case calculated as dry weight proportions based on the total binder content.
- Chalk, kaolin and titanium dioxide can be used as the mineral pigment in the coating, the total binder content being calculated as Dry weight fractions, based on the pigment fraction, is 10 to 20% by weight.
- the carton according to the invention can be produced particularly inexpensively.
- a disadvantage arises in that only coating compositions with a low solids content can be produced and the economics are questioned by the high drying effort required.
- the coating has a Bekk smoothness in the range from 200 to 2,000 seconds.
- Satin coating e.g. B. with a super calender, it also provides an excellent basis for the subsequent casting stroke.
- the smoothness of the cast coating is so high that it cannot be measured with the usual Bekk method.
- the cardboard according to the invention is suitable for direct metallization without pre-coating the cast coating on the basis of organic solvents.
- the carton according to the invention is the use as a print carrier for the gravure printing process.
- the gravure printing ink has a very good color level and a print image with high printing gloss is created.
- the cardboard according to the invention as a print carrier for the offset printing process with simultaneous use of UV-drying printing inks.
- the cast line - since it contains no pigments - forms an almost closed film, it can be printed with UV-drying printing inks using the offset printing process.
- the advantageous effect when printing the cardboard according to the invention with UV-drying offset printing inks is explained as follows:
- the applied offset printing inks remain on the closed surface due to the closed surface (high color level), so that a print image of high color brilliance and color intensity results,
- % By weight consists of cellulose fibers, having one
- Impregnated synthetic resin binder taking up 2 g / m2 calculated as dry weight fractions. After the cardboard web has dried, it is calendered. A measurement of the
- This example describes the use of a multi-layer cardboard with a waste paper-containing insert and a top layer, the pulp of which consists of 100% by weight cellulose.
- the ceiling has one 2 mass per unit area of 25 g / m, while the
- Total flat aces of the raw cardboard is 210 g / m
- Butadiene / styrene latex 9.0 parts by weight of cold water-soluble starch 2.0 parts by weight
- Example 1 With the recipe given in Example 1 for the production of the cast coating, the calendered coating corresponds to that given in Example 1
- Dry weight fractions - is achieved.
- the result obtained corresponds to that of Example 1 with regard to the gloss produced and the surface being closed.
- the cardboard is excellently metallizable.
- the binder composition for the coating corresponds to that given in Example 2.
- the result obtained shows a good covering of the waste paper insert of the cardboard, so that an excellent printable cardboard is produced.
Landscapes
- Paper (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4139386 | 1991-11-29 | ||
DE4139386A DE4139386C1 (en) | 1991-11-29 | 1991-11-29 | |
PCT/EP1992/002488 WO1993011299A1 (en) | 1991-11-29 | 1992-10-30 | Cardboard with coating on one side |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0614502A1 true EP0614502A1 (en) | 1994-09-14 |
EP0614502B1 EP0614502B1 (en) | 1995-07-05 |
Family
ID=6445915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92923153A Expired - Lifetime EP0614502B1 (en) | 1991-11-29 | 1992-10-30 | Cardboard with coating on one side |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0614502B1 (en) |
JP (1) | JPH07501362A (en) |
AT (1) | ATE124741T1 (en) |
CA (1) | CA2124576A1 (en) |
DE (2) | DE4139386C1 (en) |
DK (1) | DK0614502T3 (en) |
ES (1) | ES2074368T3 (en) |
FI (1) | FI942441A0 (en) |
WO (1) | WO1993011299A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115516168A (en) * | 2020-05-07 | 2022-12-23 | 斯道拉恩索公司 | Coated paper substrate suitable for metallization |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4327366C1 (en) * | 1993-08-14 | 1995-01-05 | Feldmuehle Ag Stora | Paper or board having a coating applied by cast coating, process for the production and use |
DE19537427C1 (en) * | 1995-10-07 | 1997-02-27 | Feldmuehle Ag Stora | Paper with a cast coating |
JP3246887B2 (en) * | 1997-09-05 | 2002-01-15 | 日本製紙株式会社 | Substrate for cast coated paper for inkjet recording, and cast coated paper using the same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4434259A (en) * | 1982-04-26 | 1984-02-28 | National Starch And Chemical Corporation | Base coatings for use on vacuum metallized paper |
DE3225658C1 (en) * | 1982-07-09 | 1984-01-05 | Zanders Feinpapiere AG, 5060 Bergisch Gladbach | Metallized paper and process for making and using same |
DE4029491A1 (en) * | 1990-09-18 | 1992-03-19 | Feldmuehle Ag | Paper with satinised overcoat and top coat on one side - contg. synthetic resin binder, natural binder and opt. pigment, useful for label |
-
1991
- 1991-11-29 DE DE4139386A patent/DE4139386C1/de not_active Expired - Fee Related
-
1992
- 1992-10-30 EP EP92923153A patent/EP0614502B1/en not_active Expired - Lifetime
- 1992-10-30 JP JP5509750A patent/JPH07501362A/en active Pending
- 1992-10-30 AT AT92923153T patent/ATE124741T1/en not_active IP Right Cessation
- 1992-10-30 CA CA002124576A patent/CA2124576A1/en not_active Abandoned
- 1992-10-30 ES ES92923153T patent/ES2074368T3/en not_active Expired - Lifetime
- 1992-10-30 DK DK92923153.8T patent/DK0614502T3/en active
- 1992-10-30 DE DE59202829T patent/DE59202829D1/en not_active Expired - Fee Related
- 1992-10-30 WO PCT/EP1992/002488 patent/WO1993011299A1/en active IP Right Grant
-
1994
- 1994-05-25 FI FI942441A patent/FI942441A0/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9311299A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115516168A (en) * | 2020-05-07 | 2022-12-23 | 斯道拉恩索公司 | Coated paper substrate suitable for metallization |
CN115516168B (en) * | 2020-05-07 | 2023-09-19 | 斯道拉恩索公司 | Coated paper substrate suitable for metallization |
Also Published As
Publication number | Publication date |
---|---|
CA2124576A1 (en) | 1993-06-10 |
WO1993011299A1 (en) | 1993-06-10 |
DE4139386C1 (en) | 1993-04-22 |
ATE124741T1 (en) | 1995-07-15 |
DE59202829D1 (en) | 1995-08-10 |
EP0614502B1 (en) | 1995-07-05 |
DK0614502T3 (en) | 1995-10-02 |
FI942441A (en) | 1994-05-25 |
ES2074368T3 (en) | 1995-09-01 |
FI942441A0 (en) | 1994-05-25 |
JPH07501362A (en) | 1995-02-09 |
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