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US 11,999,131 B2Granted
Roll-bonded laminate and method for producing the same
AssigneeToyo Kohan Co., Ltd.
InventorYusuke Hashimoto
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Abstract
The present invention is intended to provide a roll-bonded laminate, in which an ultrathin metal layer is laminated on another metal without generation of wrinkles, cracks and the like. A roll-bonded laminate formed by lamination of at least three layers, which comprises a peelable carrier layer 10, an ultrathin metal layer 20 and a metallic foil 30, wherein the thickness of the ultrathin metal layer 20 is 0.5 μm or more and 20 μm or less.
Claims8
A roll-bonded laminate formed by lamination of at least three layers, wherein:
- the roll-bonded laminate comprises a peelable carrier layer, an ultrathin metal layer, and a metallic foil, in this order;
- the peelable carrier layer comprises a carrier layer body and a peel layer, and the peelable carrier layer is laminated with the ultrathin metal layer via the peel layer;
- the thickness of the ultrathin metal layer is 0.5 μm or more and 20 μm or less;
- and
- a peel strength between the carrier layer and the ultrathin metal layer is in the range of 0.1 N/20 mm or more and less than 1 N/20 mm.
2 more elements
A roll-bonded laminate consisting of:
- an ultrathin metal layer as a single layer made by a wet film formation method or a dry film formation method;
- and
- a metallic foil as a single layer, wherein:
- the ultrathin metal layer and the metallic foil are laminated on each other by roll bonding;
- the ultrathin metal layer is a copper layer having a thickness of 0.5 μm or more and 20 μm or less;
- the metallic foil is a foil of metal selected from the group consisting of aluminum, iron, copper, nickel, magnesium, silver, gold, platinum, and an alloy comprising any of these metals as a base;
- and
- the standard deviation σ of the thickness of the ultrathin metal layer is less than 1 μm.
5 more elements
Dependencies are inferred from the claim text.