a) 15 μm
b) 6 μm
c) 1 μm
d) 10 μm
Answer: b
Explanation: A single laminate layer is thicker than 6µm. A laminate is made up of two or more layers which can be plastic or non-plastic. But at least one layer must be a plastic. All layers to make a laminate must be thicker than 6 μm. However, there is no upper limit for this.
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