sack\r\nPlastic sack rolls are made of different materials. Two polymer materials called polypropylene and polyethylene are used in the production of this roll. To produce plastic rolls in factories, they may use polypropylene or polyethylene, or in some cases use both of them.\r\n\r\nPlastic sack rolls are made in two forms, simple and laminated. In the simple type of this type of sack, the pp strings are woven and interwoven in the form of warp and weft by means of a spinning machine. In the case of laminate, these fabrics are covered by a thin layer (mixing 95% PP and 5% PE) and the pores between the warp and weft of the fabric are closed in this type of roll.\r\n\r\nRolls are divided into different types according to how much they are resistant to moisture and water. Here are the types of roll sacks:
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