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Shanghai Jiahao, one of the leading manufacturers of plastic extruder machinery and equipment, has just finished an impressive showcase at the Chinaplas 2023. The event, which took place in Shenzhen, China, from April 17th to 20th, saw the company present its latest range of innovative and high-quality products to an international audience. Shanghai Jiahao's booth was a hub of activity throughout the four-day event, as visitors from all over the world flocked to see the company's impressive array of plastic extrudsion machinery and equipment. The company's products, which included extruders, WPC flooring extruder machines, and SPC flooring extruder machines, were showcased in a variety of configurations and applications, demonstrating their versatility and effectiveness in a wide range of industries. Overall, Shanghai Jiahao's showcase at Chinaplas 2023 was a resounding success, with the company leaving a lasting impression on visitors and industry insiders alike. With its focus on innovation, quality, and customer service, Shanghai Jiahao is sure to continue making waves in the plastic extruder machinery and equipment industry for years to come.

Shanghai Jiahao will participate in Chinaplas in Shenzhen from April 17th to April 20th, 2023. This is an important industry exhibition that brings together leading companies in the rubber and plastics industry from around the world and is an excellent platform to showcase the latest technologies and products. Shanghai Jiahao is an enterprise specializing in the production and sales of rubber and plastic machinery, with many years of industry experience and technology accumulation. In this exhibition, Shanghai Jiahao will showcase its latest series of rubber and plastic machinery, including SPC floor extruders, WPC floor extruders, etc. In addition, Shanghai Jiahao will also showcase its latest technology and research and development achievements, including innovations in new materials and new processes. These technologies and achievements will provide customers with better products and services, and will also promote the development of the entire industry. As an enterprise committed to innovation and development, Shanghai Jiahao will continue to explore and innovate to provide customers with better products and services. We look forward to meeting customers and peers from all over the world to discuss industry trends and future development directions.

Possible reasons for bridging: 1. The speed of the feeder is unstable. 2. The traction motor has low horsepower and overload or unstable speed. 3. The mixing time is short, the temperature is low, the material composition, proportioning, particle size configuration, uneven mixing or high water content, wet, agglomeration, so that the extrusion speed is disordered. 4. The set temperature of the feeding section of the extruder is too high, the cooling of the feeding hopper is not good or the taper is too small. 5. Calcium carbonate is not activated or the dosage is too large. Approach: 1. Properly adjust the feeder speed. 2. Deal with the problems related to the tractor and adjust the extrusion speed appropriately. 3. Check for and deal with recipe problems. 4. Check the feeding hopper, increase the cooling of the feeding hopper and reduce the temperature of the feeding section of the extruder as appropriate. 5. Use activated calcium carbonate or reduce the content of calcium powder in the formula.

We use a five-roll calender system, which is a special design. Compared with the ordinary four-roller type, the five-roller type not only improves the production efficiency, but also makes the color film and the wear-resistant layer more closely combined with the sheet, increasing its peel strength. The front three rollers are heated by oil, so the color filter and wear layer can be glued to the board by hot pressing without glue. The latter two rolls are water cooled, so the embossing design and embossing depth do not change when the temperature changes. The third roll is the lamination roll, our roll has a larger design with a diameter of 600mm. Compared to other regular 400mm rolls, our large size composite rolls can increase the bonding area between the color filter and wear layer and the sheet, allowing them to stick more tightly together and increase their peel strength . The fourth roller is a rubber roller, which can increase the strength and depth of the embossing compared to ordinary steel rollers, making the floor more realistic.

The process of transforming from solid, unidirectional, heterogeneous state to multiphase, homogeneous, and partial gel state under the action of shear force generated by the collision between the blade of the mixer and the material and the material and the inner wall of the mixer. . During compounding, compaction can be measured by apparent density increase. Usually the apparent density of PVC resin is 0.45-0.55g/ml (grams per milliliter). In high-speed mixing, due to heat and mutual impact, the high shear force generated by friction causes the temperature of the material to rise continuously. PVC particles and other components The parts continuously penetrate each other, and the surface of the PVC particles gradually absorbs or adsorbs stabilizers, melted lubricants, processing aids, etc., and the apparent density of the mixture can be increased to 0.63-0.70g/ml. The mixing process is a process of diffusion, convection and shearing. Diffusion is beneficial to reduce the concentration difference between the various material components, so that the fine particles of the components migrate from the area with high concentration to the area with low concentration, so as to achieve uniform composition; convection and shear both use mechanical force for irregular flow , so that the material composition can achieve a fully uniform dispersion process. As the temperature continues to rise, the PVC particles continue to absorb stabilizers, lubricants, processing aids, etc., and are gradually covered by each component. When the temperature of the material rises to about 100 °C, it is easy to remove the resin and the auxiliary agent. moisture and other volatiles, avoiding the defect of air bubbles during extrusion. When the temperature rises to 110℃-120℃, it can form a uniform and stable dry mixed powder. The mixing process is also the process of gelation of the PVC mixture. The unmixed PVC resin has different particle sizes and many small particles at room temperature, which is easy to cause uneven plasticization during the extrusion molding process. During the mixing process, the PVC material gradually melts, plasticizes, and forms a network structure during crystallization. From room temperature to below 50 °C, after the PVC agglomerated powder and larger particles are impacted by friction, although the apparent density does not change much, the large accumulated particles are sheared and broken and gradually become small particles, and in the seat After the mechanical energy of the heat is increased, the activity increases, and it gradually combines with other particles to increase the size of the particles. When the material temperature is below 90 °C, the heating rate is faster, and then the heating rate is slower. The three mixing forces of PVC before 90 °C are relatively intense. When the temperature reaches 115 °C, the small resin particles become large and uniform, the small particles gradually disappear, and the particles become transparent and translucent due to partial gelation. . The degree of its partial gelation is determined by the mixing discharge temperature under certain conditions. When the temperature reaches 120℃, the PVC particles tend to be stable, and the gelation degree is deeper. In the whole process, the particles are repeatedly combined and homogenized, the particles increase and play a densifying effect, so that the apparent density of the particles reaches the maximum value, and each component can give full play to the effective synergistic effect, which is beneficial to improve the fluidity of the dry mixture and promote extrusion. Uniform plasticization of molding, improve the output and welding of plastic products, impact resistance and other properties. For the dry-mixed powder with good uniformity and dry flow, it can be observed that the PVC resin has both particle refinement and uniform particle size morphological changes, and shows the characteristics of high density and partial gelation resistance.