Product Information
  1. Corporate Profile
  2. Product Information
    1. Foil Products
      1. Applications
      2. Each product (Electrical machinery and apparatus)
        1. TOYAL-CARBO®
        3. TOYAL PASS®
        4. E-FOIL
        5. Ranafoil™
        6. Etching circuit foil
        7. Precision etched circuit products "CUME®"
      3. Each product (Foodstuffs, pharmaceuticals and industrial materials)
        1. TOYAL LOTUS®
        2. Toyal Dry™
        3. READ-MAX®
        4. Child resistant PTP - Child Proof™
        5. Hairline
        6. Alnoble®ZR
        7. Vacuum insulation materials
      4. Production bases
        1. Yao Works
        2. Kanbara Works
        3. Chiba Works
        4. Gunma Plant
        5. Chigasaki Plant
        6. Shonan Yabata Plant
    2. Powder Products
      1. Each product
        1. Aluminium alloy powder
        2. Aluminium nitride
        3. Aluminium powder for fillers
        4. High-purity spherical aluminium powder
        5. Brazing paste (Brazing filler metal pastes)
      2. Production bases
        1. Hino Works
    3. Paste Products
      1. Each application
        1. Automobiles
        2. Household electrical products and digital appliances
        3. Printing inks (Packaging materials, containers, cloth, etc.)
        4. Construction, machinery and heavy-duty anticorrosion
        5. Heat resistance and thermal insulation
        6. Powders and PCM (Pre-coated metal)
        7. Cosmetics
        8. Resins and films
        9. Electronics products
      2. Each product
        1. Leafing Alpaste®
        2. Non-leafing Alpaste®
        3. High-gloss Alpaste®
        4. TD Series (for printing inks)
        5. Resin coated Alpaste®
        6. Alpaste® for water based coating
        7. Colored Alpaste® "FRIEND COLOR"
        8. Interference color aluminium pigment "CHROMASHINE®"
        9. Interference color aluminium pigment "Cosmicolor®"
        10. Aluminium flakes for powder coating
        11. Stainless steel flakes
        12. Metallic compounds "METAX®"
        13. Aluminium thermal conductive filler
        14. Aluminium electrically conductive filler for firing
        15. Metal coated electrically conductive filler
        16. Dummy balls
      3. Catalog [PDF]
      4. Core competencies
        1. Flaking technologies (Shape control, fine powder pulverization)
        2. Surface treatment technologies
        3. Powder plating technologies
        4. Hybrid technologies
        5. Solvent substitution technologies
        6. Blending technologies
      5. Production bases
        1. Shinjo Works
      6. Troubleshooting Guide
        1. For Better Use Of ALPASTE
        2. For Safe Use Of ALPASTE
        3. Problems Resulted From ALPASTE In The Paint System (1)
        4. Problems Resulted From ALPASTE In The Paint System (2)
        5. Recommendation To Treated Type
    4. Solar Cell Related Products
      1. Each product
        1. Toyal Solar®
        2. ALSOLAR®
      2. Production bases
        1. Yao Works
        2. Hino Works
  3. Financial Information
  4. Environmental measures
  5. Research & Development
  6. Toyal Technical Report
  7. Group Company



Alnoble® ZR is the product name for the highly corrosion resistant and highly strong aluminium foil newly developed by Toyo Aluminium. In addition to having a resistance to corrosion equivalent to that of high-purity aluminium foils, it also has an extremely high mechanical strength. Please consider the use of this material for food packaging applications that were difficult for conventional aluminium foils due to the resistance to corrosion from the contents packaged and as electrode materials for lithium-ion batteries, for which long-term stability is required.

Examples markets for aluminium foil where a high resistance to corrosion is demanded

Item Application
Electrolyte resistance Long-term durability is demanded for aluminium materials used for the lead terminals, current collector material and cladding materials on lithium-ion batteries, aluminium electrolyte capacitors and electric double-layer capacitors. Materials are required to have a high resistance to electrolytes and high strength to fulfill processing suitability requirements.
Chemical resistance When laminated materials made from aluminium foil are to be used for alkaline or acidic chemicals such as hair dyes, the durability of the material is determined by the corrosion resistance of the aluminium foil, even if it does not come into direct contact with the packaged contents.
Food resistance If aluminium foil comes into direct contact with highly corrosive foods, the aluminium may be dissolved and cause leakage of the contents or contamination with the dissolved materials. Highly food resistant aluminium foil is therefore required for these foods.


Comparison of strength and food resistance characteristics

Material Quality class Thickness (µm) Tensile strength (N/mm2) Proof stress (N/mm2) Elongation (%) Corrosion resistance*
ZR material
(Material developed)
H 80 280 260 2.6 Very Good
O 80 125 105 19.5
JIS 1N30 material
(General foil)
H 80 177 159 2.7 bad
O 80 88 69 22.0
JIS 3003 material
(High strength foil)
H 80 217 200 1.5 bad
O 80 120 68 18.0

* An evaluation of the state of surface corrosion after the material is soaked in soy sauce (100%) for one month.
Assessment: bad No change, bad Slight discoloration, bad Some corrosion observed, bad Corroded

Evaluation of testing over time with immersion in soy sauce

ZR材(開発品) ZR material (item developed)
Slight change on surface layer only
C材(一般箔) General foil
Corrosion holes penetrating through


Foil for commercial and household use
Molded containers
Materials for battery parts (current collectors, lead wires, laminate materials)


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