4-inch 9mm-thick ABS Winding Tube for Film

Jiangsu Hongkai Plastic Co., Ltd. is a specialized enterprise deeply rooted in the plastic core manufacturing sector .Our current featured product is a 4-inch 9mm-thick ABS winding tube for film for film. Leveraging years of technical expertise and industry experience, we have developed a diversified product portfolio. In material applications, our flagship product is high-performance ABS material, renowned for its exceptional impact resistance, heat resistance, and processability. It finds extensive use in electronics, electrical appliances, automotive industries, and beyond. Simultaneously, to meet diverse application requirements, we have expanded our production lines to include PVC (polyvinyl chloride) and PP (polypropylene) materials. PVC excels in chemical stability and flame retardancy, making it suitable for specialized environments like chemical pipelines. PP, with its lightweight and corrosion-resistant properties, demonstrates outstanding performance in food packaging and medical device applications.

For product specifications, we have established a system combining standardization with customization. Our standard inventory products cover four mainstream pipe diameters: 2 inches, 3 inches, 4 inches, and 6 inches. All are precision injection molded to ensure an inner wall smoothness ≤0.2μm, with tolerances controlled within ±0.3mm. For specialized project requirements, we offer length customization services: our intelligent cutting system enables stepless cutting from 10mm to 6000mm, complemented by laser marking technology to simultaneously engrave customer logos or specification markings. All products are certified under the ISO 9001 Quality Management System and come with comprehensive material inspection reports and mechanical property test data.

This “material matrix + specification module” combination strategy enables rapid fulfillment of diverse orders, from laboratory samples to large-scale industrial production. Currently exported to 12 countries and regions, our products hold leading positions in niche markets including new energy lithium batteries and industrial fluid transmission. We look forward to delivering superior plastic core solutions to global customers through continuous technological innovation.

Production process

In the production process of 4-inch 9mm-thick ABS winding tube for film, raw material preparation is the primary step. High-quality ABS plastic pellets must be carefully selected to ensure their purity and performance meet specifications. We utilize the highest quality pellets. Given that ABS resin contains nitrile groups and exhibits a moisture absorption rate of approximately 0.3%, drying treatment is mandatory prior to extrusion molding. Typically employing forced-air drying at 70°C to 80°C for 2 to 4 hours, moisture content is strictly controlled below 0.1% to prevent adverse effects on processing quality. Subsequently, the material enters the extrusion molding stage. Dried ABS pellets are first added to the extruder hopper, where they are melted and uniformly mixed through screw rotation and heating. The screw structure typically employs a constant pitch with a gradually varying thread depth, featuring a length-to-diameter ratio between 25 and 35 to accommodate the extrusion characteristics of ABS plastic. Temperature control is particularly critical during extrusion. Barrel temperatures are divided into feeding, plasticizing, and homogenizing zones, maintained at 160°C to 170°C, 170°C to 180°C, and 170°C to 175°C respectively. Die head and die temperatures are slightly higher at 175°C to 185°C and 180°C to 190°C to ensure complete plasticization and smooth extrusion. The molten ABS plastic is extruded through a precisely designed die to form a continuous pipe blank. Immediately afterward, the extruded pipe blank undergoes rapid cooling via a cooling device, typically using room-temperature water cooling. The cooling temperature is controlled between 15°C and 22°C. Simultaneously, the distance between the sizing sleeve and the die must be maintained within 15 to 35 millimeters to ensure the stability of the pipe blank's shape and dimensions during the cooling process.Finally cut to the required dimensions.

The above outlines the complete production process for ABS core tubes, from meticulous raw material preparation to cooling and shaping. Each step is strictly controlled to ensure Hongkai Plastics delivers premium products with exceptional quality and stable performance. Should you have any procurement needs for ABS core tubes, or wish to learn more about product details or customize specifications, please feel free to contact me anytime. I will be delighted to provide professional service and detailed answers.