초록 ▼

A laminated package insert is provided having increased compressive strength for a given weight of board stock, and being easier to erect, as compared to previously known inserts. The insert is made from two substantially identical blanks, with identical score patterns, placed face-to-face and adher

A laminated package insert is provided having increased compressive strength for a given weight of board stock, and being easier to erect, as compared to previously known inserts. The insert is made from two substantially identical blanks, with identical score patterns, placed face-to-face and adhered in selected areas, leaving other areas adhesive-free. The score lines are formed so that no score line has to be broken backwards during erection, thereby making erection easier, particularly for automatic insert erecting equipment. A method and apparatus for assembling the insert are also provided wherein two feeders alternately feed blanks into a hopper, each successive pair of blands being face-to-face, one blank having adhesive on selected areas of the face facing the other blank. The synchronization of the two feeders is carefully controlled, as is the settling of the blanks in the hopper, using air jets free of turbulence.

대표청구항 ▼

Apparatus for forming a laminated package insert from two substantially identical blanks, each of said blanks having a substantially identical score pattern, by adhesively assembling one of a first and second face of one of said blanks to the corresponding one of a first and second face of the other

Apparatus for forming a laminated package insert from two substantially identical blanks, each of said blanks having a substantially identical score pattern, by adhesively assembling one of a first and second face of one of said blanks to the corresponding one of a first and second face of the other of said blanks, said insert being for providing compressive strength in a desired direction to a package in which it is inserted, said apparatus comprising: a receiving hopper for receiving said blanks with their corresponding faces adjacent one another; first feeding means on a first side of said receiving hopper for feeding a series of first blanks in rapid succession into said receiving hopper from said first side with one of said first and second faces up; second feeding means on a second side of said receiving hopper directly opposite said first feeding means for feeding a series of second blanks into said receiving hopper from said second side with a corresponding one of said first and second faces down; adhesive-applying means associated with said first feeding means for applying adhesive to at least one selected area of said one of said first and second faces of each of said first blanks fed by said one of said first feeding means, each of said second blanks fed by said second feeding means remaining free of adhesive until it contacts one of said first blanks, said at least one selected area extending substantially from a first end of each of said first blanks to a second end of each of said first blanks in said desired direction, said at least one area extending over less than the full extent of each of said first blanks in a direction normal to said desired direction, leaving at least one adhesive-free area on each of said first blanks, before feeding each of said first blanks to said receiving hopper; synchronization means interconnecting said first and second feeding means for controlling the feeding of said blanks to said receiving hopper such that said first and second feeding means alternately feed blanks at the same feed rate to said receiving hopper from alternate sides of said receiving hopper; settling controlling means associated with said receiving hopper for causing each of said blanks to settle by free fall in said receiving hopper, without excessive float and substantially without turbulence, at a settling rate sufficient to prevent collisions between blanks fed by said first feeding means and blanks fed by said second feeding means, such that each of said first blanks to which adhesive has been applied by said adhesive-applying means adheres in said receiving hopper to an adjacent second blank which is free of adhesive to form said laminated package insert; and take-away means for removing said inserts from said receiving hopper; whereby: each of said inserts can be erected by folding said adhered blanks in accordance with said score pattern, said first and second blanks separating in at least one adhesive-free area, but remaining adhered in said at least one area of adhesive, upon erection of said insert.