Abstract: A commercial greenhouse roof and roof glazing system that maximizes the intake of direct winter sunlight while managing spring, summer and fill sunlight to similar levels so that continuous produce and other crops can be grown. This system has transparent corrugated roofing sheets with north and south facing sections running in an east/west direction, where portions of the outer face of the outer glazing sheet are coated, insulation separates each sheet at locations of top surface coating, gas spaces separate each sheet at locations of no coating, and reflective material coats the interior surface of the interior sheet at portions of insulation. This system has no moving parts other than the movement of the sun in relationship to the structure. The color of the sunlight spectrum is split in the summer months so that the photosynthetic active portion is maximized in summer months leaving the unwanted summer heat gain outside of the structure.

Abstract: Improved liquid containers are provided characterized by at least one raised sealing score formed in the blank such that when assembled, the raised portion of the sealing score substantially abuts the free edge of a side seam and/or bottom panel, respectively, thereby eliminating liquid seepage from said container.

Abstract: A blank for forming a gable top carton is provided along with the carton formed therefrom. The blank comprises first through fourth side panels and a side glue panel consecutively articulated to one another along parallel fold lines for defining the side walls of the gable top carton to be formed from the blank. Top and bottom panels are articulated to the opposed ends of the respective side panels and glue panel. The blank further comprises a skived flap extending entirely along one edge of the blank and adjacent the glue panel and the top and bottom panels articulated to the glue panel. The skived flap is defined by a rabbeted portion extending into the exterior surface of the blank, and is appropriately dimensioned to enable the skived flap to be folded over onto the exterior surface of the blank along the entire length of the edge.