Melt Direct Spinning Masterbatch Adding Equipment Manufacturers

Masterbatch Adding Equipment in Melt Direct Spinning Technology: Principle and Application

As a comprehensive technical service provider in the field of chemical fiber machinery, Jiaxing Shengbang Mechanical Equipment Co., Ltd. deeply integrates precision manufacturing and process innovation capabilities in the research and development of masterbatch adding equipment. Its core principle is based on the following technical modules:

High-precision metering system
Shengbang adopts loss-in-weight metering technology, and realizes dynamic compensation of masterbatch addition through self-developed high-sensitivity weighing sensor (accuracy up to ±0.1g) and closed-loop control system. For example, when producing differentiated fibers, it can ensure that the error of functional masterbatch in each ton of melt is controlled within ±0.02kg.

Screw combination optimization: For masterbatches with different viscosities (such as high-filled carbon black masterbatch), the company's R&D department has developed a modular screw design, which can quickly adapt to process requirements by replacing screw elements (such as mixing section and conveying section).

Efficient dispersion technology
Shengbang's static mixer adopts a multi-stage split-shear structure, combined with fluid mechanics simulation optimization, so that the dispersed particle size of the masterbatch in the melt reaches 3-5μm (the industry average is 8-10μm), significantly improving the uniformity of the fiber.
For high-viscosity polymers (such as PET, PA66), the company introduced melt pump side feeding + ultrasonic assisted dispersion technology, breaking the masterbatch agglomeration through high-frequency vibration, and improving the dispersion efficiency by 40%.

Intelligent control system
The equipment integrates PLC + Industrial Internet of Things (IIoT) platform to support remote monitoring and data traceability. For example, Shanghai Panghaihai Technology Engineering Co., Ltd. (Sales and R&D Headquarters) can obtain the operating status of the equipment in real time, predict the risk of screw wear or blockage through AI algorithms, and trigger maintenance work orders in advance.

Application scenarios:
Relying on new material research and development and special yarn production capabilities (Haian Jingtong New Material Technology Co., Ltd. is the experimental base), Shengbang's masterbatch addition equipment performs outstandingly in the following scenarios:

High-end colored fibers
In the production of solution-dyed polyester, Shengbang's equipment achieves fiber color fastness of 4-5 levels (ISO standard) through precise metering and uniform dispersion, and the water-saving efficiency is increased by 95% compared with the traditional dyeing method. For example, the black masterbatch addition system customized for an international brand achieves a color difference of ΔE<0.5 per ton of fiber (unrecognizable by the human eye).

Functional fiber development
Antibacterial fiber: Using silver ion masterbatch addition technology, combined with Shengbang's independently developed plasma coating process (special technology of the production department), the fiber antibacterial rate is >99% and the washing resistance exceeds 50 times.
Flame-retardant fiber: Through the combination of phosphorus-based flame-retardant masterbatch and special screw, the fiber LOI value reaches 32%, meeting the EU EN 469 standard.

Environmentally friendly recycled fiber
Shengbang equipment supports the mixed addition of recycled polyester masterbatch and virgin materials, and ensures that the strength loss of recycled fiber is less than 5% by optimizing the screw shear force and temperature field. For example, the twin-screw addition system designed for an environmental protection enterprise achieves a recycled fiber content of 70% and a breaking strength of ≥3.5cN/dtex.