5 Developing Directions Of Nonwovens Machinery

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During this period,

The industry will develop, promote a number of multi-functional, modular and differentiated advanced nonwovens.

In the 59 "13th Five-Year" key scientific and technological tackling projects, there were 5 nonwovens machinery projects in the "13th Five-Year" development guidance.

During the "13th Five-Year" period, nonwovens machinery will be developed in the direction of modular design, intelligent manufacturing, energy saving and emission reduction, high yield and wide range, various process combinations, suitable for processing special fibers, composite materials and simulation.

1 high-speed carding technology research and development and application of high-speed carding machine

Meaning and content: carding machine is one of the essential equipments in spunlace, needling, hot air and other dry nonwovens production processes.

The carding technology should be systematically tested and studied to increase the speed and productivity of the carding machine and meet the processing needs of different fiber varieties. The net speed should reach 200 m / min.

Key technologies: optimize the structure of carding machine, adopt modular design, improve the adaptability of spinning and process, increase the dosage of new materials and components such as carbon fiber and aluminum profile, lighten the weight of equipment, improve the level of automatic control, stabilize product quality, reduce labor consumption, and improve the reliability of equipment.

2020 target: carding machine output speed is above 200 m / min; compound ratio: 20~80/80~20, fiber fineness is less than 2D.

Technology and equipment of 2 double component spun composite nonwovens production line

Meaning and content: the two-component spinning and melting composite nonwoven production line is the most advanced nonwovens equipment in the world, which integrates the core technology of spunbonded, melt blown, SMS composite spinning and so on, and meets the special requirements of multi-mode head production.

The production line combines two kinds of polymers to form PP bicomponent fibers, which are made of PE and other structures. The fibers are fully drafted and diffused under the action of air flow to form fibrous net, and then melt spinning nonwoven fabrics are produced by hot rolling.

The key technologies are the development of spinning box, the development of composite spinning spinneret, the development of composite spinning process, the digital distributed control system, and the closed-loop control system that meets the production process requirements and safety requirements.

2020 Objective: to develop and produce PE/PP dual component melt spinning composite nonwoven equipment with a width of 3200mm.

3 high efficiency, high yield, environmental protection and energy saving airflow net production line

Meaning and content: relying on the new aerodynamics method, the waste textile fiber airflow can be felt to replace the traditional mechanical production process represented by carding machine and cross laying machine.

The production line is equipped with a whole process pressure control device to make the mesh uniformity of the whole length and width direction better. The maximum density difference is less than 3%, and the production capacity of the production line is greater than 1000 kg / h.

The key technology is to study aero netting technology based on aerodynamics.

2020 target: breakthrough key technologies, production capacity of 1000 kg / h, finished product weight of 150~2000 g / m2, set up demonstration production line.

4PP spunbonded needle geotextile production line

Significance and content: PP spunbonded needle geotextile has better acid and alkali resistance, higher tensile strength and elongation than PET geotextile, and its application in geotechnical field is better than PET geotextile, especially in civil engineering and airport runway construction under saline alkali geological conditions.

Its properties are irreplaceable by PET spinning, but there are still gaps in its technology and products in China.

The key technology is that PP spunbonded needle geotextiles are different from ordinary PP spunbonded hot rolled nonwovens. Generally, raw materials with relatively low blending index are generally used, and the fiber size is large, usually about 10d.

Because PP has larger hot melt value and lower surface friction coefficient, it is necessary to solve the difficult problems such as fiber cooling, air draft, mesh laying and needling consolidation in Spunbonded Production.

2020 target: build a production line with a width of more than 4.5 meters and put it into the market.

5 numerical control dust filter material production line

Significance and content: in recent years, the domestic acupuncture technology has gradually matured, but compared with the advanced level abroad, the domestic equipment has low automation, low productivity and good quality of finished products.

A special numerical control system for nonwoven equipment (needle punching equipment) is developed, which is applied to the production line of high temperature resistant fiber dust filter material. The research and optimization of pneumatic feeder, high-speed messy nonwovens carding machine, cross folding web laying machine and wide width high frequency needle punching machine are carried out to solve the problems of high speed of acupuncture frequency, high accuracy of mechanism movement and intellectualization of control system.

The key technologies are multi machine synchronous servo speed control, intermittent precise servo motion control, reciprocating bidirectional (horizontal vertical) combined process control, structural design modular design, special CNC system.

The goal of 2020 is to independently develop the production line of nonwoven dust filter materials, and reach the international advanced level, and form relevant technical standards.