초록 ▼

Sample bags are produced from webs of film material by forming longitudinal seams and longitudinally spaced transverse seams and by filling the bags with a sample product between forming the transverse seams. In order to make the bags easier to handle, the longitudinal seams are thickened so that th

Sample bags are produced from webs of film material by forming longitudinal seams and longitudinally spaced transverse seams and by filling the bags with a sample product between forming the transverse seams. In order to make the bags easier to handle, the longitudinal seams are thickened so that the thickness of the seams is equal to the thickness of the center of the bag. Thickening is done by rolling or folding the seams or by adding frames or strips of additional material either between or outside the seam or interior portions of the webs. The resulting bags are more easily stacked, handled and inserted into publications for distribution.

대표청구항 ▼

[ What is claimed is:] [1.] A sample bag comprisingfirst and second generally rectangular blanks of bag material of substantially the same size, each said blank having longitudinal side edges and transverse side edges, said blanks being juxtaposed with an inner surface of said first blank facing an

[ What is claimed is:] [1.] A sample bag comprisingfirst and second generally rectangular blanks of bag material of substantially the same size, each said blank having longitudinal side edges and transverse side edges, said blanks being juxtaposed with an inner surface of said first blank facing an inner surface of said second blank, said inner surfaces of longitudinal side edges of said first blank being sealed to inner surfaces of said longitudinal side edges of said second blank and inner surfaces of said transverse side edges of said first blank being sealed to inner surfaces of said transverse side edges of said second blank, thereby forming a rectangular bag with a sealed central compartment surrounded by longitudinal and transverse seam areas,a predetermined quantity of deformable or flowable material enclosed in said sealed central compartment of said bag giving said central compartment a variable form with a local maximum thickness; andmeans in said longitudinal seam areas for increasing said longitudinal seam areas to a thickness substantially equal to said local maximum thickness of said central portion whereby stackability of the bag and handling in high-speed automatic machines is improved.