| 摘要 |
A sealed aperture is formed in a laminated assembly by prepunching a central sheet such as a paper art print to form a first aperture and then laminating the art print between two sheets of laminating film to form a laminated assembly in which the two films are fused together in the aperture to form a single film in the form of a disc. A second aperture is then punched through the disc having a smaller diameter than the film aperture such that a sealed border remains between the second aperture and the first aperture.
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