HDPE (High-Density Polyethylene) is a widely used general-purpose polymer material in packaging, daily chemical, geotechnical and food industries. It features high density, excellent rigidity, superior tensile resistance, good low-temperature tolerance, outstanding chemical stability, non-toxicity and environmental friendliness.
Compared with conventional PE materials, HDPE has a higher crystallinity and greater melt strength, with a narrow processing temperature range. During film blowing, it is prone to uneven plasticization, unstable bubble, large thickness deviation and abundant surface crystal spots, which set higher requirements for the extrusion accuracy, temperature control stability and mixing performance of production equipment.
Traditional large-scale film blowing production lines are only suitable for mass production and fail to meet the demands of small-batch and frequent formula debugging for HDPE. They suffer from high material consumption, long lead time, high energy consumption and high debugging risks. In addition, ordinary small film blowers are not optimized for the high crystallinity of HDPE, often resulting in poor plasticization, film bubble fluctuation and numerous film defects, with low reference value of experimental data.
POTOP film blower for HDPE Formulas (POTOP) is specially adapted for various HDPE systems, including neat HDPE, filled modified HDPE, toughened modified HDPE and HDPE blended with color masterbatches. It requires only a small amount of raw materials for rapid sample preparation, effectively cutting R&D trial-and-error costs and enabling precise optimization of processing parameters.
Core Equipment Advantages
●Customized Screw Extrusion System for HDPE Plasticization
Equipped with 20mm/25mm screws at a length-diameter ratio of 28, the system is tailored to the high crystallinity and poor meltability of HDPE. It enhances uniform shearing and mixing to eliminate unmelted particles, crystal spots and melt streaks. Fitted with an independent servo drive system, it delivers stable rotating speed and consistent extrusion flow. The independent PID temperature control ensures a temperature accuracy of ±1°C.
●Precision Die Head & Intelligent Air Ring for Stable Bubble Forming
Adopting a high-precision film blowing die head and aluminum alloy direct-current vector air ring, together with an electrically liftable film frame for easy film threading and parameter adjustment, the equipment realizes rapid shaping of HDPE film bubbles. It solves industrial challenges such as bubble swaying, difficult shaping and uneven film thickness, and produces films with smooth surface, high gloss and excellent thickness uniformity.
●Intelligent & User-Friendly Operation with Traceable Data
Integrated with a high-definition touch PLC control system, it controls the extrusion, lifting, haul-off and winding systems. Real-time temperature curves, pressure curves and fault alarm records are available for inquiry.
●Compact & High-Efficiency Design for Low-Cost R&D
The all-in-one desktop structure occupies minimal space and requires no dedicated factory workshop. It consumes less raw materials and takes shorter time for each test. Compared with industrial production lines, it greatly reduces costs on materials, energy and time. It supports rapid comparative tests of multiple formulas and parameters to boost the R&D efficiency of new HDPE materials. Multiple safety protection devices are equipped to ensure stable and safe operation, ideal for laboratory use.
Application Scenarios
●Enterprise R&D Centers: Formula development, process optimization and small-batch sample preparation for HDPE packaging films, geotextile films, medical films and functional films.
●Universities & Research Institutes: Teaching experiments and academic research for majors such as polymer materials and packaging engineering.
●Color Masterbatch & Additive Manufacturers: Dispersion test of HDPE color masterbatches, efficacy evaluation of additives and formula verification.
●Quality Inspection Institutions: Quality testing of HDPE films, raw material performance analysis and process compliance verification.
