| 摘要 |
A rigid polymeric insulating foam board is manufactured by forming a panel sandwich comprising a lower substrate 1, an upper substrate 2, and foam layer 3 between the substrates 1, 2. Air streams are applied through elongated slots in air tubes 50, 55 to substantially remove dirt and grit particles from the foam receiving faces of the substrates 1, 2. The foam is laid down across at least 10% of the width of the substrate 1 by a lay down head in the shape of a fish tail. To stack the panels, a leading panel 60 is raised above a stacking bed 62 by support legs 63 and gripped in the raised position by side retaining arms 65. A following panel 70 is delivered into the stacking bed 62, the first panel 60 is dropped into the panel 70, and both panels 60, 70 are raised to receive a following panel. |
