摘要 |
A method for the preparation of a cross-linked, rigid, polyethylene, foam sheet product, which method comprises heating at least one surface of a cross-linked, polyethylene, foam sheet material, to a temperature sufficient to cause a slight surface post-expansion of the foam sheet material, contacting the heated, post-expanded, foam surface with a cold metal element, to form a cross-linked, polyethylene, foam sheet product of the desired, accurate thickness, or having a desired three-dimensional design on the cross-linked, foam sheet material.
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