In the synthetic resin tube body for the flat make sack, when the sack justifying contents ones in the bag body which is completed, the inside and outside surface of the bag body and print manner to the region which is both edge strips and production manner null of the bag body by its synthetic resin make tube

摘要

PURPOSE:To display advertisement on all of the surface, rear and both side surfaces of a bag body and to double the effect of propaganda and advertisement by applying gravure printing to the surface and rear parts of a tube body to take up said tube body in a roll form so as to shift the same in a body peripheral direction while a taking-up angle is changed and folds are applied. CONSTITUTION:Predetermined displays 6, 8, 9 are applied to the surface regions and one side surface region of the flat surface part 2 of the tube body 10 delivered from a roll body R and the rear region and other side surface region of the flat rear part 3 thereof to take up the tube body 10 in a roll form. Compressed air is injected in the flat thin-wall tube body 10 delivered from the roll body R to be formed into a dome shape while the tube body 10 is fed through press rollers 21 and one side surface width of the surface 2 of the inflated thin-wall tube body 10 and the other side surface width of the rear 3 thereof are shifted by 1/2 the width of the tube body in the body peripheral direction. The tube body is folded along the central line position (c) of both side surface widths and pressed by press rollers 24 while the taking-up and angle of the tube body is changed through separate rollers 23 guide members 22 and taken up by a roll body R' while folds 103.104 are applied to the tube body.