High temperature resistant ton bag production technology

The production method of high temperature resistant ton bag is a complex and fine process, which mainly involves the selection of raw materials, mixing, processing and subsequent weaving, cutting, sewing and other steps. The following is a detailed overview of the high temperature resistant ton bag production method:

First, raw material selection and mixing

Selection of raw materials: high temperature resistant ton bags are generally polypropylene (PP) or polyethylene (PE) as the main raw materials, which have good high temperature resistance and mechanical strength. At the same time, in order to improve the high temperature resistance and other physical properties of the ton bag, some filler masterbatch and additives will be added, such as calcium carbonate, dispersant, plasticizer, color masterbatch, enhancer and so on.

Raw material mixing: the polypropylene or polyethylene raw material and the filler masterbatch are mixed according to a certain proportion (such as 9-19:1), and fully stirred through the blender to obtain the mixed raw materials.

Second, the processing process

Hot melt and extrusion: the mixed raw materials are heated to a certain temperature (such as 220-270 ° C), so that the hot melt forms a viscous flow state, and the film is extruded by the extruder.

Cooling and shaping: the extruded film is sent to the cooling tank and shaped under the action of circulating cooling water. At the same time, the residual water on the surface of the film is removed by the film lifting device.

Drawing and winding: the cooled film is cut into a blank wire, and the blank wire is stretched and shaped into a flat wire by mechanical traction. Then, the flat wire is rewound to the yarn cylinder by the winding machine to obtain the spindle.

Third, weaving and cutting

Weaving: the flat yarn on the spindle is woven through the circular loom into the corresponding size of the cylindrical woven bag and hanging belt. This step is a key step in the formation of the main structure of the ton bag.

Cutting: According to customer needs, the woven cylindrical woven bag is cut to obtain the required ton bag size.

Fourth, sewing and reinforcement

Sewing: Use wear and stretch resistant sewing thread and sewing equipment to sew the cut ton bag. Including sewing the bottom, upper mouth and reinforcement belt of the ton bag to ensure that the overall structure of the ton bag is strong.

Reinforcement: In the important parts of the ton bag, such as the corner, rope, load, etc., reinforcement treatment. The load-bearing capacity and durability of ton bags are usually improved by sewing reinforcement belts or adding double stitches.

5. Quality inspection and packaging

Quality inspection: Quality inspection of the produced high temperature resistant ton bags to ensure that the products meet the relevant standards and customer needs. The inspection contents include the size of the ton bag, bearing capacity, high temperature resistance and so on.

Packaging: The qualified high temperature resistant ton bag is packed and compressed to reduce the space occupied by the product and facilitate subsequent storage and transportation.

It should be noted that the process parameters and quality standards of each link need to be strictly controlled in the production process of high temperature resistant ton bags to ensure the production of high-quality products. At the same time, with the continuous progress of technology and changes in market demand, the production method of high temperature resistant ton bags is also constantly improving and perfecting.