... the backseam. Cement bags for packing 40 to 50 kgs/bag: Inside laminated WPP woven bags, backseam, 10x10 or 8x8/square ... inch, with a kraft liner inside, white or beige colour. Gravure printed WPP woven bags, with ... a white kraft paper laminated inside, backseam.PP Woven Shopping Bag(KL08S009)woven shopping bag,pp woven tote bag,tote bag,pp woven shopping sack