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The utility model of the paper sandwich reinforced cement bag interlayer is a polypropylene plastic wire, and has a substantial improvement compared with the publicly used intermediate sandwich polypropylene plastic wire. First, the width and thickness of the polypropylene plastic wire are not the same; The number of warps and wefts is not the same as the number of weaving layers and the angle of weaving. Third, there is no adhesion between the inner and inner layers of the cement bag, and the intermediate layer is not bonded to the utility model. After the utility model has been improved through this series of technologies, the cost is saved. It also increases its strength and is not easily damaged.
There are various kinds of cement bags that have been publicly used in the market. Some of them are glass fiber, some are nylon yarn, some are hemp, and some are polypropylene plastic wires. However, they are expensive or easily damaged and are unsatisfactory.