Perforated vinyl film ceiling board

作者： W Chamberlain

DOI:

关键词: Engineering 、 Composite material 、 Ceiling (cloud) 、 Fiber composition

摘要: A standard fiber composition ceiling board is provided with an outer laminate of plasticized vinyl film. The holes in the film are smaller than board. product made by laminating to board, then perforating and pin punches. perforations stay at size which they formed, while shrink size.