Coating structure, sheet-like product and its use
The present invention relates to a coating structure for a sheet-like substrate comprising lignocellulosic fibres. The structure comprises at least one pre-coat layer, which comprises (a) at least 70 weight-% of a first styrene (meth)acrylate copolymer which is polymerised in the presence of a stabi...
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| creator | Turkki, Tarja |
| description | The present invention relates to a coating structure for a sheet-like substrate comprising lignocellulosic fibres. The structure comprises at least one pre-coat layer, which comprises (a) at least 70 weight-% of a first styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic platy mineral particles, such as kaolin or talc, and (c) 0.01 - 2 weight-% of at least one first thickener. The coating structure further comprises a top coat layer, which comprises (a) at least 50 weight-% of a second styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic mineral particles, (c) 0.01 - 5 weight-% of at least one second thickener, and (d) 0.5 - 30 weight-% of an antiblocking agent. The invention further relates to a sheet-like product comprising coated with a coating structure. |
| format | Patent |
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The structure comprises at least one pre-coat layer, which comprises (a) at least 70 weight-% of a first styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic platy mineral particles, such as kaolin or talc, and (c) 0.01 - 2 weight-% of at least one first thickener. The coating structure further comprises a top coat layer, which comprises (a) at least 50 weight-% of a second styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic mineral particles, (c) 0.01 - 5 weight-% of at least one second thickener, and (d) 0.5 - 30 weight-% of an antiblocking agent. 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The structure comprises at least one pre-coat layer, which comprises (a) at least 70 weight-% of a first styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic platy mineral particles, such as kaolin or talc, and (c) 0.01 - 2 weight-% of at least one first thickener. The coating structure further comprises a top coat layer, which comprises (a) at least 50 weight-% of a second styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic mineral particles, (c) 0.01 - 5 weight-% of at least one second thickener, and (d) 0.5 - 30 weight-% of an antiblocking agent. 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The structure comprises at least one pre-coat layer, which comprises (a) at least 70 weight-% of a first styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic platy mineral particles, such as kaolin or talc, and (c) 0.01 - 2 weight-% of at least one first thickener. The coating structure further comprises a top coat layer, which comprises (a) at least 50 weight-% of a second styrene (meth)acrylate copolymer which is polymerised in the presence of a stabiliser, and which has a glass transition temperature Tg ≤ 20 °C, preferably ≤ 10 °C, (b) ≤ 30 weight-% of inorganic mineral particles, (c) 0.01 - 5 weight-% of at least one second thickener, and (d) 0.5 - 30 weight-% of an antiblocking agent. The invention further relates to a sheet-like product comprising coated with a coating structure.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G |
| title | Coating structure, sheet-like product and its use |
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