JPH0468935B2 - - Google Patents
Info
- Publication number
- JPH0468935B2 JPH0468935B2 JP6133589A JP6133589A JPH0468935B2 JP H0468935 B2 JPH0468935 B2 JP H0468935B2 JP 6133589 A JP6133589 A JP 6133589A JP 6133589 A JP6133589 A JP 6133589A JP H0468935 B2 JPH0468935 B2 JP H0468935B2
- Authority
- JP
- Japan
- Prior art keywords
- tableware
- silver ions
- paint
- resin
- soluble glass
- 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.)
- Expired
Links
- 239000003973 paint Substances 0.000 claims description 33
- -1 silver ions Chemical class 0.000 claims description 27
- 229910052709 silver Inorganic materials 0.000 claims description 26
- 239000004332 silver Substances 0.000 claims description 26
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 25
- 230000002421 anti-septic effect Effects 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000002344 surface layer Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000010828 elution Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 239000010419 fine particle Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 235000002245 Penicillium camembertii Nutrition 0.000 description 6
- 230000000843 anti-fungal effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910021536 Zeolite Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 235000021186 dishes Nutrition 0.000 description 2
- 235000021156 lunch Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 235000002233 Penicillium roqueforti Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 244000005714 skin microbiome Species 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Table Devices Or Equipment (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Glass Compositions (AREA)
Description
（産業上の利用分野）
本発明は例えば給食用弁当箱等として用いるに
適した防腐・防黴性を有する食器に関するもので
ある。
（従来の技術）
銀、銅などの金属イオンに防腐・防黴性がある
ことは従来から知られており、たとえば、クーリ
ング・タワーの防汚や、養殖用漁網の防藻など
に、これらの金属イオンを含む塗料が使用されて
いる。また、用水管に銅管を用いると細菌や藻の
発生を防ぎ、細い銅線を衣服に編込むと汗や皮膚
雑菌による悪臭の発生を防ぐなどのことが知られ
ている。しかし、食器の腐敗や黴の発生を防止す
る目的で、食器に上述のような金属イオンによる
防腐・防黴剤を使用した例は知られていない。
そこで本発明者らは、先に防腐・防黴性がある
と云われている銀イオンを吸着させた多孔質のゼ
オライトを用い、これを混ぜた塗料を食器の表面
に塗布して、防腐・防黴効果を発揮させる試みを
行なつた。しかし、防腐・防黴効果が充分でない
ために多量のゼオライトを塗料中に混合しなけれ
ばならず、そのため塗料への均一な混入が困難と
なるだけでなく、塗布後の外観がマツト状になつ
て美観を損なうとともに、ゼオライトは吸湿性が
強いために取扱いが不便であるなどの問題点があ
つた。
（発明が解決しようとする課題）
本発明は、上記のような従来の問題を解決して
長期間にわたり安定した防腐・防黴効果を発揮す
ることができ、しかも毒性が無く、人体に対して
安全で、且つ塗布後の外見も良好な防腐・防黴性
を有する食器を提供するために完成されたもので
ある。
（課題を解決するための手段）
上記の課題を解決するための本発明は、銀イオ
ンを徐々に溶出させることができる溶解性ガラス
の粒子を少なくとも表層に分散保持させたことを
特徴とするものである。
また本発明は、銀イオンを一定の速度で徐々に
溶出させることができる溶解性ガラスの微粒子
を、食器用樹脂または表層を形成する食器用塗料
中に分散させたことを特徴とするものである。ま
た本発明においては、食器表面から銀イオンの溶
出速度が0.0001〜1.0μｇ／cm2／dayになるように
制御されている。
このように本発明においては、銀イオンを一定
速度で溶出させることが可能な溶解性ガラスが防
腐・防黴剤として使用されている。この溶解性ガ
ラスとは、制御された溶解速度を持つように、ガ
ラスの物理的、化学的特性を考慮して組成を調節
したガラスの総称で、それ自体は既に知られてい
るものである。したがつて、銀化合物を添加した
溶解性ガラスでは、数時間から数年間の任意の期
間にわたつて決められた一定速度で銀イオンを溶
出させることができる。そして溶出した銀イオン
が、細菌や微生物の細胞壁へ吸着したり、細胞膜
内に濃縮して、いわゆるオリゴジナミー作用によ
つて細菌や微生物の生育を阻害し、防腐・防黴効
果を発揮することになる。
本発明においては、このような銀イオンを含む
溶解性ガラスを、粒径が200μｍ以下、好ましく
は50μｍ以下の微粒子として、樹脂または表層を
形成する塗料中に分散させることにより、あるい
は表層を形成する塗料の表面に付着させることに
より、少なくとも表層に溶解性ガラスの粒が分散
保持された食器を得る。ここで粒径が20μｍ以上
になると、樹脂や塗料中に均一に分散しなくなり
混合性が悪くなる。また、樹脂や塗料への溶解性
ガラスの混入量は、0.05重量％以下であると銀イ
オンによる効果が不十分となり、15重量％以上に
なると樹脂や塗料中への混入が困難になるので、
混入量は0.05〜15重量％程度とした。
本発明において、銀イオンを含む溶解性ガラス
の微粒子を分散混合する食器用樹脂の素材として
は、たとえばABS樹脂、フエノール樹脂、ポリ
カーボネート樹脂、ポリプロピレン樹脂、および
メラミン樹脂などを用いた。また、食器用塗料の
展開剤としては、たとえばアクリル系樹脂、ウレ
タン系樹脂、ポリエステル系樹脂、およびビニー
ル系樹脂などを用いた。一般にこれ等を用いて作
られた食器用の樹脂や塗料は、僅かであるが透水
性を有するので、樹脂内または表層の塗膜内に分
散している溶解性ガラスが水分や湿分によつて溶
解することによつて、食器表面に銀イオンが徐々
に溶出してくることになり、その結果、食器に収
納されている食品に対して防腐・防黴効果を発揮
することになる。
前述したように、食器表面からの銀イオンの溶
出速度を0.0001〜1.0μｇ／cm2／dayとしたのは、
銀イオンの溶出速度が0.0001μｇ／cm2／day以下で
あると充分な防腐・防黴効果が得られず、また
1.0μｇ／cm2／day以上になると銀イオンが必要以
上に溶出して効果が持続し難しくなるためであ
る。
（実施例）
実施例 １
B2O350モル％、SiO230モル％、Na2O20モル％
の組成を持つガラス100重量部に対して、
Ag2O0.5重量部を添加して作成した溶解性ガラス
の、粒径25μｍ以下の微粒子を調製し、この微粒
子をポリエステルウレタン樹脂中に0.5重量％、
および5.0重量％混入分散させた二種類の塗料を
用意した。この二種類の塗料を、ABS樹脂で成
形した食器の表面にそれぞれ塗布した後、銀イオ
ンの溶出量と滅菌効果を測定した。銀イオンの溶
出量は、食器に純水を満たし20℃で24時間保持
後、水中の銀イオン濃度を原子吸光光度計で測定
した。第１表は銀イオンの経時溶出量を測定した
結果であるが、二種類の塗料を用いた当該食器か
らの銀イオンの溶出量はほぼ一定であることがわ
かる。また、第２表はシエイクフラスコ法によつ
て大腸菌の減少率を測定した結果であるが、二種
類の塗料を用いた当該食器においては、大腸菌が
ほぼ撲滅していることがわかる。
(Field of Industrial Application) The present invention relates to tableware having antiseptic and antifungal properties suitable for use as, for example, lunch boxes for school lunches. (Prior art) It has been known for a long time that metal ions such as silver and copper have antiseptic and antifungal properties. Paints containing metal ions are used. It is also known that using copper pipes for irrigation pipes prevents the growth of bacteria and algae, and that woven thin copper wires into clothing prevents the generation of bad odors caused by sweat and skin bacteria. However, there are no known examples of using metal ion preservatives and anti-mold agents on tableware for the purpose of preventing tableware from rotting and mold generation. Therefore, the present inventors used porous zeolite that has adsorbed silver ions, which are said to have antiseptic and antifungal properties, and applied a paint mixed with this to the surface of tableware. An attempt was made to demonstrate its anti-mildew effect. However, since the antiseptic and anti-mold effects are not sufficient, a large amount of zeolite must be mixed into the paint, which not only makes it difficult to mix it evenly into the paint, but also causes the appearance after application to become matte. In addition to impairing the aesthetic appearance, zeolite also has problems such as being inconvenient to handle due to its strong hygroscopicity. (Problems to be Solved by the Invention) The present invention solves the conventional problems as described above and can exhibit stable antiseptic and anti-mold effects over a long period of time, and is non-toxic and non-toxic to the human body. It was completed in order to provide tableware that is safe and has antiseptic and anti-mold properties that have a good appearance after application. (Means for Solving the Problems) The present invention for solving the above problems is characterized in that particles of soluble glass from which silver ions can be gradually eluted are dispersed and retained at least in the surface layer. It is. Furthermore, the present invention is characterized in that fine particles of soluble glass capable of gradually eluting silver ions at a constant rate are dispersed in the tableware resin or the tableware paint forming the surface layer. . Further, in the present invention, the elution rate of silver ions from the surface of the tableware is controlled to be 0.0001 to 1.0 μg/cm 2 /day. As described above, in the present invention, a soluble glass capable of eluting silver ions at a constant rate is used as a preservative and anti-mold agent. Meltable glass is a general term for glasses whose composition has been adjusted in consideration of the physical and chemical properties of the glass so as to have a controlled melting rate, and is already known in itself. Therefore, in a soluble glass to which a silver compound has been added, silver ions can be eluted at a fixed rate over any period of time from several hours to several years. The eluted silver ions then adsorb to the cell walls of bacteria and microorganisms or concentrate within their cell membranes, inhibiting the growth of bacteria and microorganisms through a so-called oligodynamic effect, and exhibiting antiseptic and antifungal effects. . In the present invention, such soluble glass containing silver ions is dispersed as fine particles with a particle size of 200 μm or less, preferably 50 μm or less in a resin or a paint forming a surface layer, or by dispersing it in a paint forming a surface layer. By adhering the paint to the surface, tableware in which soluble glass particles are dispersed and held at least in the surface layer can be obtained. If the particle size exceeds 20 μm, the particles will not be uniformly dispersed in the resin or paint, resulting in poor mixability. In addition, if the amount of soluble glass mixed into the resin or paint is less than 0.05% by weight, the effect of silver ions will be insufficient, and if it exceeds 15% by weight, it will be difficult to mix it into the resin or paint.
The mixing amount was about 0.05 to 15% by weight. In the present invention, as the material for the resin for tableware in which fine particles of soluble glass containing silver ions are dispersed and mixed, for example, ABS resin, phenol resin, polycarbonate resin, polypropylene resin, and melamine resin are used. Further, as the developing agent for the tableware paint, for example, acrylic resin, urethane resin, polyester resin, vinyl resin, etc. were used. In general, resins and paints for tableware made using these materials have a small amount of water permeability, so the soluble glass dispersed in the resin or in the coating on the surface can be absorbed by moisture. By heating and dissolving, silver ions are gradually eluted onto the surface of the tableware, and as a result, it exerts a preservative and anti-mold effect on the food stored in the tableware. As mentioned above, the elution rate of silver ions from the tableware surface was set at 0.0001 to 1.0 μg/cm 2 /day because
If the elution rate of silver ions is less than 0.0001μg/cm 2 /day, sufficient antiseptic and antifungal effects cannot be obtained, and
This is because if the concentration exceeds 1.0 μg/cm 2 /day, more silver ions will be eluted than necessary, making it difficult to maintain the effect. (Example) Example 1 B 2 O 3 50 mol%, SiO 2 30 mol%, Na 2 O 20 mol%
For 100 parts by weight of glass with the composition of
Fine particles of soluble glass with a particle size of 25 μm or less were prepared by adding 0.5 parts by weight of Ag 2 O, and 0.5% by weight of these fine particles were added to polyester urethane resin.
Two types of paints containing and dispersing 5.0% by weight were prepared. After applying these two types of paint to the surface of tableware molded from ABS resin, the amount of silver ions eluted and the sterilization effect were measured. The amount of silver ions eluted was determined by filling a dish with pure water and holding it at 20°C for 24 hours, and then measuring the silver ion concentration in the water using an atomic absorption spectrophotometer. Table 1 shows the results of measuring the amount of silver ions eluted over time, and it can be seen that the amount of silver ions eluted from the tableware using the two types of paints is almost constant. Furthermore, Table 2 shows the results of measuring the reduction rate of E. coli using the shake flask method, and it can be seen that E. coli was almost completely eradicated in the tableware using the two types of paints.
【表】【table】
【表】
実施例 ２
実施例１と同一の溶解性ガラスから、粒径15μ
ｍ以下の微粒子を調製し、この微粒子をポリウレ
タン樹脂中に0.05重量％、2.5重量％、および5.0
重量％混入分散させた三種類の塗料を用意した。
この三種類の塗料を、ABC樹脂で成形した食器
の表面にそれぞれ塗布した後、銀イオンの溶出量
を測定するとともに、各種食料品を入れて室内に
放置した場合の経時変化を観察した。第３表は銀
イオンの経時溶出量を測定した結果である。また
食料品の経時変化は、溶解性ガラスを混入しない
ポリウレタン樹脂のみを塗布した食器を対照にし
て、その状態を箇条書きにして以下に示す。[Table] Example 2 From the same melting glass as Example 1, particle size 15μ
Prepare fine particles with a size of 0.05% by weight, 2.5% by weight, and 5.0% by weight in polyurethane resin.
Three types of paints mixed and dispersed in weight percent were prepared.
After each of these three types of paint was applied to the surface of tableware molded with ABC resin, the amount of silver ions eluted was measured, and changes over time were observed when various foodstuffs were placed inside and left indoors. Table 3 shows the results of measuring the amount of silver ions eluted over time. In addition, the changes over time of foodstuffs are shown below in itemized form, with tableware coated only with polyurethane resin that does not contain soluble glass as a control.
【表】
水餅：当該溶解性ガラスを混入しない塗料を塗布
した食器では２日目から白黴の発生が見られ、
その後黄色黴、青黴が発生した。当該溶解性ガ
ラスを0.05重量％混入した塗料を塗布した食器
では白黴の発生まで５日間を要し、また2.5重
量％、5.0重量％混入した場合では７日間経過
しても白黴は発生しなかつた。
天然チーズ：当該溶解性ガラスを混入しない塗料
を塗布した食器では２日目で緑色黴と悪臭の発
生が見られたが、当該溶解性ガラスを0.05重量
％混入した塗料を塗布した食器では、同様の状
態になるには11日間を要し、また2.5重量％、
5.0重量％混入した場合では20日間経過しても
変化が見られなかつた。
糖入りゼラチン培地：当該溶解性ガラスを混入し
ない塗料を塗布した食器では４日目で白黴のコ
ロニーが発生したが、当該溶解性ガラスを0.05
重量％以上混入した塗料を塗布した食器では、
７日間を経過しても変化が認められなかつた。
炊飯米：当該溶解性ガラスを混入しないか、0.05
重量％混入した塗料を塗布した食器では３日目
で白黴が発生したが、当該溶解性ガラスを2.5
重量％、5.0重量％混入した塗料を塗布した食
器では10日間を経過しても変化を生じなかつ
た。
野菜の煮物：当該溶解性ガラスを混入しない塗料
を塗布した食器では３日目に黴によると思われ
る腐敗部分が観察されたが、当該溶解性ガラス
を0.05重量％混入した塗料を塗布した食器で
は、同様の状態になるまでには７日間を要し、
また2.5重量％、5.0重量％混入した場合では10
日間を経過しても変化が見られなかつた。
（発明の効果）
以上に説明したように本発明食器は、銀イオン
を一定速度で溶出させることができる溶解性ガラ
スの微粒子を食器用樹脂または表層を形成する食
器用塗料中に分散させる等の手段により少なくと
も表層に分散保持させたもので、長期間にわたり
安定した防腐・防黴効果を発揮させることができ
るものである。しかもガラス組成によつてガラス
の溶解速度を厳格に制御できるので、一般に伝わ
れている閾値より遥かに少量の銀イオンを一定速
度で安定して溶出させることができるので、毒性
が無く、人体に対して全く安全である。また少量
の溶解性ガラスであつても充分な効果が得られる
ので、溶解性ガラスを混入した塗料を用いても、
従来の食器と外観上何ら変わることがない。よつ
て本発明は、従来の問題点を一挙に解決した防
腐・防黴性を有する食器として、産業の発展や福
祉の向上に寄与するところは極めて大である。[Table] Rice cakes: On tableware coated with paint that does not contain the soluble glass, white mold can be seen starting from the second day.
After that, yellow mold and blue mold appeared. It takes 5 days for white mold to develop on tableware coated with paint containing 0.05% by weight of the soluble glass, and white mold does not appear even after 7 days when the paint is mixed with 2.5% or 5.0% by weight. Nakatsuta. Natural cheese: Green mold and bad odor were observed on the second day on tableware coated with a paint that did not contain the soluble glass, but the same was observed on tableware coated with a paint containing 0.05% by weight of the soluble glass. It takes 11 days to reach the state of , and 2.5% by weight,
When 5.0% by weight was mixed, no change was observed even after 20 days. Sugar-containing gelatin medium: On the tableware coated with paint that does not contain the soluble glass, white mold colonies appeared on the 4th day, but when the soluble glass was mixed in at 0.05
For tableware coated with paint containing more than % by weight,
No change was observed even after 7 days had passed. Cooked rice: Do not mix the soluble glass or 0.05
White mold appeared on the tableware coated with paint containing 2.5% by weight, but white mold developed on the 3rd day.
In the tableware coated with the paint containing 5.0% and 5.0% by weight, no change occurred even after 10 days. Boiled vegetables: On the third day, rotten areas thought to be caused by mold were observed on dishes coated with a paint that did not contain the soluble glass, but on dishes coated with a paint containing 0.05% by weight of the soluble glass. , it takes 7 days to reach a similar state,
In addition, when 2.5% by weight and 5.0% by weight were mixed, 10
No change was observed even after several days had passed. (Effects of the Invention) As explained above, the tableware of the present invention is produced by dispersing fine particles of soluble glass that can elute silver ions at a constant rate into the tableware resin or tableware paint forming the surface layer. It is dispersed and maintained at least in the surface layer by some means, and can exhibit stable antiseptic and antifungal effects over a long period of time. Moreover, since the glass dissolution rate can be strictly controlled by the glass composition, it is possible to stably elute silver ions in a much smaller amount than the generally accepted threshold at a constant rate, making it non-toxic and safe for the human body. It's completely safe. In addition, sufficient effects can be obtained even with a small amount of soluble glass, so even if paint containing soluble glass is used,
There is no difference in appearance from conventional tableware. Therefore, the present invention greatly contributes to the development of industry and the improvement of welfare as a tableware having antiseptic and anti-mold properties that solves the conventional problems at once.
Claims (1)
解性ガラスの粒子を少なくとも表層に分散保持さ
せたことを特徴とする防腐・防黴性を有する食
器。 ２ 銀イオンを徐々に溶出させることができる溶
解性ガラスを食器用樹脂または表層を形成する食
器用塗料中に分散混入させたことを特徴とする防
腐・防黴性を有する食器。 ３ 食器表面からの銀イオンの溶出速度を0.0001
〜1.0μｇ／cm2／dayとした請求項１又は請求項２
に記載の防腐・防黴性を有する食器。[Scope of Claims] 1. Tableware having antiseptic and anti-mold properties, characterized in that particles of soluble glass from which silver ions can be gradually eluted are dispersed and held in at least the surface layer. 2. A tableware having antiseptic and anti-mold properties, characterized in that a soluble glass capable of gradually eluting silver ions is dispersed and mixed into a resin for tableware or a paint for tableware forming a surface layer. 3 Set the elution rate of silver ions from the tableware surface to 0.0001
Claim 1 or Claim 2: ~1.0 μg/cm 2 /day
Tableware having antiseptic and anti-mold properties as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6133589A JPH02239812A (en) | 1989-03-14 | 1989-03-14 | Tableware having antiseptic and antifungi property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6133589A JPH02239812A (en) | 1989-03-14 | 1989-03-14 | Tableware having antiseptic and antifungi property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02239812A JPH02239812A (en) | 1990-09-21 |
| JPH0468935B2 true JPH0468935B2 (en) | 1992-11-04 |
Family
ID=13168164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6133589A Granted JPH02239812A (en) | 1989-03-14 | 1989-03-14 | Tableware having antiseptic and antifungi property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02239812A (en) |
-
1989
- 1989-03-14 JP JP6133589A patent/JPH02239812A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02239812A (en) | 1990-09-21 |
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