초록 ▼

A method of forming a sift-proof seal for closure of a box having a plurality of folded flaps, the seal being formed by an adhesive strip pattern. The flaps are moved linearly toward a plurality of nozzles which extrude adhesive in a pattern of closely spaced adhesive strips. A flap having such an a

A method of forming a sift-proof seal for closure of a box having a plurality of folded flaps, the seal being formed by an adhesive strip pattern. The flaps are moved linearly toward a plurality of nozzles which extrude adhesive in a pattern of closely spaced adhesive strips. A flap having such an adhesive pattern is brought into contact with a second flap to compress the pattern of adhesive therebetween. The spacing between adjacent strips of adhesive is such that the folding of the flap causes merging of the adhesive to form a continuous strip of adhesive, thereby forming a box closure. The adhesive pattern is limited to a first outside edge of the first flap, with each remaining outside edges receiving a sift-proof continuous line of adhesive.

대표청구항 ▼

A method of forming a sift-proof seal for a container having flaps comprising, moving said container relative to a plurality of closely spaced outlets for extruding adhesive, extruding adhesive from said nozzles to form a plurality of closely spaced parallel lines of adhesive on a portion of a first

A method of forming a sift-proof seal for a container having flaps comprising, moving said container relative to a plurality of closely spaced outlets for extruding adhesive, extruding adhesive from said nozzles to form a plurality of closely spaced parallel lines of adhesive on a portion of a first flap of said container, said lines of adhesive having gaps therebetween and having lengths generally parallel to said relative movement of said container, the sum of the areas of said gaps between said lines of adhesive being less than that area of said first flap covered by said lines of adhesive, and compressing said lines of adhesive between said first flap and a second flap, said lines of adhesive being spaced apart such that said compressing causes merging of adjacent lines of adhesive.