Test method for quality evaluation and coated container
A coated container includes: a container having a surface; and a coating applied to at least part of the surface to form a coated surface. Leaching of at least one of one or more types of ions or one or more types of compounds is determined by performing an alkaline treatment on at least part of the coated surface to obtain an alkaline treated surface and performing an acidic treatment on at least part of the alkaline treated surface to obtain an acidic treated surface. The leaching of the at least one of one or more types of ions or one or more types of compounds from the coated surface is 5.00 mg/l or less.
1 . A coated container, comprising:
a container comprising a surface and defining a brimful volume; and
a coating applied to at least part of the surface to form a coated surface, wherein leaching of at least one of one or more types of ions or one or more types of compounds is determined by performing an alkaline treatment on at least part of the coated surface to obtain an alkaline treated surface and performing an acidic treatment on at least part of the alkaline treated surface to obtain an acidic treated surface, wherein the leaching of the at least one of one or more types of ions or one or more types of compounds from the coated surface is 5.00 mg/l or less;
wherein the alkaline treatment comprises: bringing an alkaline solution comprising water and a base at a concentration of 0.0001 mol/l to 1 mol/l and exhibiting a pH of 7< to 14 in contact with the at least part of the coated surface of the container for 1 second to 1 week, wherein a temperature outside the container is set to 20° C. to 200° C. and the alkaline solution fills 10% to 100% of the brimful volume of the container; and
wherein the acidic treatment comprises: bringing an acidic solution comprising water and an acid at a concentration of 0.0001 mol/l to 1 mol/l and exhibiting a pH <7 in contact with the at least part of the alkaline treated surface for 1 second to 1 week, wherein a temperature outside the container is set to 20° C. to 200° C. and the acidic solution fills 10% to 100% of the brimful volume of the container; wherein the one or more types of ions or one or more types of compounds is selected from the group consisting of alkaline metal ions, alkaline earth metal ions, one or more compounds comprising C, one or more monomers, one or more antioxidants, and combinations thereof.
2 . The coated container of claim 1 , wherein the leaching of the at least one of one or more types of ions or one or more types of compounds is a, wherein a≤1.00*b;
wherein if 0.9× the brimful volume of the container is ≤1 ml, b is 5.00 mg/l;
wherein if 0.9× the brimful volume of the container is >1 ml and ≤2 ml, b is 4.50 mg/l;
wherein if 0.9× the brimful volume of the container is >2 ml and ≤3 ml, b is 4.10 mg/l;
wherein if 0.9× the brimful volume of the container is >3 ml and ≤5 ml, b is 3.20 mg/l;
wherein if 0.9× the brimful volume of the container is >5 ml and ≤10 ml, b is 2.50 mg/l;
wherein if 0.9× the brimful volume of the container is >10 ml and ≤20 ml, b is 2.00 mg/l;
wherein if 0.9× the brimful volume of the container is >20 ml and ≤50 ml, b is 1.50 mg/l;
wherein if 0.9× the brimful volume of the container is >50 ml and ≤100 ml, b is 1.20 mg/l;
wherein if 0.9× the brimful volume of the container is >100 ml and ≤200 ml, b is 1.00 mg/l;
wherein if 0.9× the brimful volume of the container is >200 ml and ≤500 ml, b is 0.75 mg/l; and
wherein if 0.9× the brimful volume of the container is >500 ml, b is 0.50 mg/l.
3 . The coated container of claim 2 , wherein a≤0.70*b.
4 . The coated container of claim 3 , wherein a≤0.40*b.
5 . The coated container of claim 4 , wherein a≤0.10*b.
6 . The coated container of claim 1 , wherein the container comprises a base material, an inner surface, and an outer surface, wherein at least a part of the inner surface is the coated surface; and
wherein the coated container exhibits in the following equation i/o ≤0.90 in [mg/cm 2 ]/[mg/cm 2 ],
wherein i is the the leaching of the at least one of one or more types of ions or one or more types of compounds from the coated surface; and
wherein o is leaching of the at least one of one or more types of ions or one or more types of compounds of the base material.
7 . The coated container of claim 6 , wherein i/o≤0.60.
8 . The coated container of claim 7 , wherein i/o≤0.30.
9 . The coated container of claim 8 , wherein i/o≤0.20.
10 . The coated container of claim 6 , wherein at least one of the following is satisfied:
i is 1.0*10 −10 mg/cm 2 to 1.0*10 −3 mg/cm 2 ; or
o is 1.1*10 −5 mg/cm 2 to 1.0*10 −1 mg/cm 2 .
11 . The coated container of claim 1 , wherein the container comprises a base material comprising a glass.
12 . The coated container of claim 11 , wherein the glass has a composition comprising in mass-%:
SiO 2 : 30 to 98 mass-%;
B 2 O 3 : 0 to 30 mass-%;
Al 2 O 3 : 0 to 30 mass-%;
X 2 O: 0 to 30 mass-%, wherein X is at least one of Na, K, or Li;
YO: 0 to 30 mass-%, wherein Y is at least one of Ca, Mg, or Ba; and
unavoidable impurities.
13 . The coated container of claim 11 , wherein the glass comprises sodium.
14 . The coated container of claim 1 , wherein the container comprises a base material comprising a polymer.
15 . The coated container of claim 14 , wherein the polymer comprises at least one of cyclic olefin copolymer or cyclic olefin polymer.
16 . The coated container of claim 1 , wherein the container comprises a base material comprising at least one of:
at least one compound comprising C;
at least one monomer; or
at least one antioxidant.
17 . The coated container of claim 16 , wherein the base material comprises at least one monomer, the at least one monomer comprising at least one of norbornene, norbornane, or bicyclopentane.
18 . The coated container of claim 16 , wherein the base material comprises at least one antioxidant, the at least one antioxidant comprising at least one of:
a phenolic antioxidant;
pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate;
dibutylhydroxytoluene (BHT);
a phosphite antioxidant;
tris(2,4-ditert-butylphenyl)phosphite;
a phosphonite antioxidant;
tetrakis(2,4-di-tert-butylphenyl)[1,1-biphenyl]-4,4′-diylbisphosphonite; or
a thioether antioxidant.
19 . A coated container, comprising a base material, an inner surface, and an outer surface, wherein at least a part of the inner surface is a coated surface; and wherein the coated container exhibits in the following equation i/o≤d, a value d in [mg/cm 2 ]/[mg/cm 2 ] of 0.90, wherein i is leaching of at least one of one or more types of ions or one or more types of compounds from the coated surface and wherein o is leaching of at least one of one or more types of ions or one or more types of compounds of the base material, wherein the one or more types of ions or one or more types of compounds is selected from the group consisting of alkaline metal ions, alkaline earth metal ions, one or more compounds comprising C, one or more monomers, one or more antioxidants, and combinations thereof.