Check laminate for varied lengths. Laminate mis-registration Side of laminate not registered Check laminate for width variation. Check variation of board side guide wheels. Check relation between laminate guide and side guide wheels. Likely Causes Entire Laminate comes off easily Compression to loose.
Speed is to high.
Heating elements are burnt out. Heat banks are to high from face of board. Rear of heat bank is to high. Draft under heat bank. Good bond on edges only.