| 摘要 |
The invention provides a method comprising a) attaching a first skin to a first surface of an open cell foam to form a precursor for a door, window or panel; and b) attaching a second skin to the precursor in a separate step fr om step a). The invention also provides a precursor for a door, window, or pane l, comprising a skin attached to one face of an open cell foam, but not to an opposing face of the open cell foam. |
