Instructions for soluble asphalt packaging bag

Science and technology are advancing rapidly, packaging is changing with each passing day, and the asphalt packaging concept also shows new features. Green packaging with environmental protection, energy saving and consumption reduction, and environmental pollution reduction of packaging waste has become the development trend of asphalt packaging in the new century. The company's purpose of "respecting top quality and putting quantity first" through the process of product production, sales, after-sales and other aspects, according to the needs of customers and the market, we are constantly improving our products and continuously Our customers provide products with excellent price and better after-sales service, instead of leaving the products alone after sales. Product problems will damage your company's product image and cause your company to question the quality and quality of the packaging bags produced by our company. As a result, the asphalt packaging industry is full of difficulties. In order to better maintain the asphalt packaging industry, We need to have the right relationships and the same interests to achieve a win-win situation. Based on the product quality problems that have occurred over the years, the following points are summarized, and they are hoped to be adopted by the manufacturers to avoid unnecessary losses.

    1 packing bag

    At present, our company produces asphalt packaging bags. The main material is polypropylene. The melting point (filling temperature) is ≤140 ° C, and the complete melting point (melting temperature) is 170 ° C to 175 ° C. The product is mainly composed of three bags with the thickness of the inner bag. 0.06mm to 0.08mm, mainly for high temperature resistance and leakage prevention, the thickness of the middle bag body is 0.04mm to 0.06mm. It mainly plays a secondary role in preventing leakage and puncture. The outer layer is a plastic woven bag. The main function is to bear the pressure (the weight of the asphalt and the pressure generated after stacking), and the weather resistance (the bag body is anti-aging). The weather resistance of this product is more than June. Above) 3 months. The stacking height is 4 to 10 layers (depending on the thickness of the woven bag body). From the above, it can be seen that each bag in a set of bags has its own function. The manufacturer can use the size of the respective packaging site, the flatness of the ground, the production of the product, the shipping cycle, the transportation means, The distance and other factors, choose the size of the packaging bag and the weight of the bag body (thickness, weight of the outer woven bag, anti-aging time).

2 Transport and storage of packaging bags

When this packing bag leaves the factory, the two inner inner bags and the outer woven bag have been assembled as required. No dragging is allowed during the handling process. Handle it gently. During transportation, the container or carriage must be guaranteed. It should be flat and free of spikes and corners. If necessary, please use soft items for isolation. Pack the bags in the box or compartment and cover the tarpaulin. During transportation and storage, it is forbidden to mix with sharp objects and chemically corrosive materials and store them in the open air. Cover the opaque waterproof tarpaulin. It is best to store the bag in a dark, dry and cool environment away from heat sources. Thus, the aging time of the packaging bag is extended, and the shelf life of the normal packaging bag is one year. It is recommended to reduce the number of loading and unloading during transportation, preferably one loading and unloading.

3 Use of packaging bags

     This packaging bag is divided into mechanical and manual packaging bags. For the mechanical packaging bags, because it is automatically controlled, the asphalt flow rate is reasonably controlled during the process of setting the asphalt filling process to avoid excessive speed and eroding the bottom of the packaging bag. . Control the strength, speed and other procedures of the manipulator so as to run at a constant speed, avoiding actions such as shock and vibration. For manual packaging bags: the bag holder should be smooth and flat without burrs. After folding the bag mouth, the center of the bag mouth is aligned with the asphalt filling port. After the asphalt filling is completed, the inner bag is tightened and the excess gas in the bag is released. , (90% or more) to prevent bag burst during placement. When sewing the outer woven bag, leakage is prevented because the inner membrane is punctured during the sewing process of the sewing needle. After filling the seam bag with asphalt, you can only grab the outer woven bag body at the seam of the seam sewing machine. It is forbidden to grasp the two corners of the bottom of the bag. ℃, the inner film bag is in a semi-plastic state, which is easy to tear and break. It can be said that the strength of the inner film bag is the most fragile at this time.) For transportation, the bag body cannot be dragged on the ground after asphalt filling, so as to avoid Scratch the bag body. Handle it with care during the shipping process. Do not touch the hard or sharp items. The bag should be broken to avoid rough handling. The cooling site should be flat, clean, and free of sharp objects such as gravel to avoid puncturing the bag. After the hot-filled asphalt is placed neatly, the asphalt and asphalt should not be stacked together, so as not to increase the cooling time and reduce the anti-aging time of the packaging bag. Due to the temperature at that time, it should be left for more than 24 to 48 hours, or left to cool for 8 hours after being naturally cooled, and then the asphalt can be completely solidified before the next factory shipment and palletizing storage.

4.Asphalt transportation and storage

When transporting to the transit site, timely replace the damaged asphalt, and replace the inner membrane and outer woven bag at the same time. Avoid rough loading and unloading during handling and transportation, avoid large impacts, collisions, and control the distance between the hopper and the loading and unloading surface when the loader is loading, not more than 1.5 meters, especially in winter when the temperature is lower than 0 degrees. It must be handled gently. The packaging bag is resistant to aging for 6 months outdoors. In Tibet, Qinghai, Xinjiang and other high-altitude areas (above 2500 meters above sea level), the storage bags should be covered with a layer of greenhouse film and a layer of opaque tarpaulin when stored outdoors. Avoid rain and exposure, and resist aging for 6 months. During the storage process, the asphalt cargoes are stacked in a timely manner at the warehouse, and covered in a timely manner. The covering period does not exceed 24 hours after unloading. Palletizing requirements: The width of the bottom of the stack is not greater than 6 meters, and the height is not higher than 1.8 meters. Gold tower shape), the length of the pallet is unlimited. Require rainwater to be discharged in a timely manner, to avoid rainwater deposition under the pallet, and regularly check the tarpaulin cover to ensure that the cover is tight. When the air temperature is less than 0 ℃, it should be handled gently during transportation, so as to avoid damage to the bag due to the hard asphalt, causing damage to the inner membrane and outer bags, causing the asphalt to flow out and causing pollution. Try to avoid loading and unloading in the morning and evening when the temperature is low, and choose to load at noon and when the temperature is high in the afternoon. It is forbidden to drag and other acts that cause damage to the bag body. Do not use a loader or other mechanical shovel when unloading. When used at the construction site, remove the woven bag and strapping rope. After the asphalt is heated to the melting temperature, it should be properly stirred to fully melt the inner membrane. So as not to enter the melting tank, block the asphalt output pipeline, and arouse the construction progress.