| 摘要 |
A supporting bed (20) for supporting a stack of sheet material (36) in a cutting machine (10) of the type retaining the material by means of a vacuum applied from below the supporting bed (20) is manufactured from a composite structure of starting material including individual layers (60) of reticulated foam material separated by at least one layer of a hot melt adhesive web (62). The composite structure (20) is compressed under heat and pressure so as to be permanently reduced to approximately 10-35 % of its initial thickness. The degree of compression, the temperature and compression time, and the porosity of the reticulated polyurethane foam starting material are selected to provide particular airflow and firmness characteristics for the finished supporting bed (20). |
