US2010323162A1PendingUtilityA1
Glass ceramic panel with a pleasing black decoration applied with a decorative paint
Est. expiryAug 20, 2023(expired)· nominal 20-yr term from priority
C03C 2217/485C03C 8/02C03C 8/14C03C 17/007Y10T428/24355Y10T428/24926H05B 3/74C03C 17/04
47
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Claims
Abstract
Decorative paints are typically burned in at relatively high temperatures, preferably in connection with the thermal ceramicizing process. In order to provide a glass ceramic panel having a cooking surface with a pleasing deep black, very smooth decoration by a burned-in decorative paint, the glass ceramic panel is formed from a melt that is black and the decorative paint on the black glass ceramic panel consists of a colorless zinc-containing glass flux The colorless zinc-containing glass flux preferably has a composition in wt. %: Li 2 O, 0-5; Na 2 O, 0-5; K 2 O, <2; ΣLi 2 O═Na 2 O═K 2 O, 1-10; MgO, 0-3; CaO, 0-4; SrO, 0-4; BaO, 0-4; ZnO, >0-4; B 2 O 3 , 15-27; Al 2 O 3 , 10-20; SiO 2 , 43-58; TiO 2 , 0-3; ZrO 2 , Sb 2 O 3 , 0-2; and F, 0-3.
Claims
exact text as granted — not AI-modified1 . A decorated glass ceramic panel with a cooking surface, said cooking surface being provided with a black decoration by means of a burned-in decorative paint, wherein said decorative paint is applied to said cooking surface to form said black decoration, said glass ceramic panel has a black color and said decorative paint on the cooking surface consists of a colorless zinc-containing glass flux;
wherein said colorless zinc-containing glass flux consists, in percent by weight, of:
Li 2 O
0-5
Na 2 O
0-5
K 2 O
<2
Σ Li 2 O + Na 2 O + K 2 O
1-10
MgO
0-3
CaO
0-4
SrO
0-4
BaO
0-4
ZnO
>0-4
B 2 O 3
15-27
Al 2 O 3
10-20
SiO 2
43-58
TiO 2
0-3
ZrO 2
0-4
Sb 2 O 3
0-2
F
0-3;
and
wherein the decorative paint is applied in the form of a background texture to form said black decoration and said black decoration has a roughness R a ≦0.35μ.
2 . The glass ceramic panel as defined in claim 1 , wherein said black decoration has a layer thickness of from 1 to 7μ.
3 . The glass ceramic panel as defined in claim 1 , which has a composition in percent by weight of:
Si 2 O
62-68
Al 2 O 3
19.5-22.5
Li 2 O
3.0-4.0
Na 2 O
0-1.0
K 2 O
0-1.0
BaO
1.5-3.5
CaO
0-1.0
MgO
0-0.5
ZnO
0.5-2.5
TiO 2
1.5-5.0
ZrO 2
0-3.0
MnO 2
0-0.40
Fe 2 O 3
0-0.20
CoO
0-0.30
NiO
0-0.30
V 2 O 5
0-0.80
Cr 2 O 3
0-0.20
F
0-0.20
Sb 2 O 3
0-2.0
As 2 O 3
0-2.0
ΣNa 2 O + K 2 O
0.5-1.5
ΣBaO + CaO
1.5-4.0
ΣTiO 2 + ZrO 2
3.5-5.5
ΣSb 2 O 3 + As 2 O 3
0.5-2.5.
4 . The glass ceramic panel as defined in claim 1 , which has a composition in percent by weight of:
Li 2 O
2.5-5.5
Na 2 O
0-3.0
K 2 O
0-3.0
Σ Na 2 O + K 2 O
0-4.0
MgO
0-3.0
CaO
0-2.5
SrO
0-2.0
BaO
0-3.5
ZnO
0-3.5
Al 2 O 3
18-27
SiO 2
52-75
TiO 2
1.2-5.5
ZrO 2
0-3.0
SnO 2
<1.0
Σ TiO 2 + ZrO 2 + SnO 2
2.0-6.0
P 2 O 5
0-8.0
V 2 O 5
0.02-0.6,
and at least one coloring ingredient selected from the group consisting of Cr—, Mn—, Fe—, Co—, Ni—, Se— and Cl— compounds for adjustment and assisting in production of a black color shade.
5 . A decorated glass ceramic panel with a cooking surface, said cooking surface being provided with a black decoration by means of a burned-in decorative paint, wherein said decorative paint is applied to said cooking surface to form said black decoration, said glass ceramic panel has a black color and said decorative paint on the cooking surface consists of a colorless zinc-containing glass flux;
wherein said colorless zinc-containing glass flux consists, in percent by weight, of:
Li 2 O
0-5
Na 2 O
0-5
K 2 O
<2
Σ Li 2 O + Na 2 O + K 2 O
1-10
MgO
0-3
CaO
0-4
SrO
0-4
BaO
0-4
ZnO
>0-4
B 2 O 3
15-27
Al 2 O 3
10-20
SiO 2
43-58
TiO 2
0-3
ZrO 2
0-4
Sb 2 O 3
0-2
F
0-3;
and
wherein said black decoration formed by said decorative paint has a layer thickness of from 1 to 7μ.
6 . The glass ceramic panel as defined in claim 5 , wherein the decorative paint is applied in the form of a background texture to form said black decoration and said black decoration has a roughness R a ≦0.35μ.
7 . The glass ceramic panel as defined in claim 5 , which has a composition in percent by weight of:
Si 2 O
62-68
Al 2 O 3
19.5-22.5
Li 2 O
3.0-4.0
Na 2 O
0-1.0
K 2 O
0-1.0
BaO
1.5-3.5
CaO
0-1.0
MgO
0-0.5
ZnO
0.5-2.5
TiO 2
1.5-5.0
ZrO 2
0-3.0
MnO 2
0-0.40
Fe 2 O 3
0-0.20
CoO
0-0.30
NiO
0-0.30
V 2 O 5
0-0.80
Cr 2 O 3
0-0.20
F
0-0.20
Sb 2 O 3
0-2.0
As 2 O 3
0-2.0
ΣNa 2 O + K 2 O
0.5-1.5
ΣBaO + CaO
1.5-4.0
ΣTiO 2 + ZrO 2
3.5-5.5
ΣSb 2 O 3 + As 2 O 3
0.5-2.5.
8 . The glass ceramic panel as defined in claim 5 , which has a composition in percent by weight of:
Li 2 O
2.5-5.5
Na 2 O
0-3.0
K 2 O
0-3.0
Σ Na 2 O + K 2 O
0-4.0
MgO
0-3.0
CaO
0-2.5
SrO
0-2.0
BaO
0-3.5
ZnO
0-3.5
Al 2 O 3
18-27
SiO 2
52-75
TiO 2
1.2-5.5
ZrO 2
0-3.0
SnO 2
<1.0
Σ TiO 2 + ZrO 2 + SnO 2
2.0-6.0
P 2 O 5
0-8.0
V 2 O 5
0.02-0.6,
and at least one coloring ingredient selected from the group consisting of Cr—, Mn—, Fe—, Co—, Ni—, Se— and Cl— compounds for adjustment and assisting in production of a black color shade.Join the waitlist — get patent alerts
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