Meltblown nonwoven machines play a pivotal role in the production of meltblown nonwoven fabrics, which are characterized by their lightweight, porous structure and extremely fine fibers. These machines utilize high-speed hot air to attenuate and entangle extruded thermoplastic filaments, forming a web of fine fibers that is subsequently collected and processed.
Understanding Meltblown Nonwoven Machines
Нетканый материал, полученный методом выдувания из расплава consists of several key components:
- Экструдер: This component melts thermoplastic resin pellets or granules, preparing them for extrusion through fine nozzles.
- Distribution Plate with Nozzles: The molten resin is forced through thousands of tiny nozzles, creating a multitude of filaments.
- Система горячего воздуха: A high-velocity hot air system heats up as it passes over a chamber and is then directed onto the extruded filaments.
Ключевые параметры машин мелтблауна
The performance and output of meltblown nonwoven machines are influenced by several critical parameters:
- Nozzle Holes: The number and diameter of nozzle holes determine the fineness of the fibers and the fabric’s basis weight.
- Air Temperature: Higher air temperatures result in finer fibers but can potentially damage the resin.
- Расход воздуха: Increased air velocity produces finer fibers but consumes more energy.
- Resin Type: Different resins, такие как стр, Финиш, and PET, are used based on the desired fabric properties.
- Скорость производства: Higher speeds allow for increased fabric production but may affect fiber fineness.
- Ширина: The machine’s width determines the size of the nonwoven fabric produced.
Применение нетканых материалов, выдутых из расплава
Meltblown nonwoven fabrics possess unique attributes that make them suitable for a wide range of applications:
- Здравоохранение: They are extensively used in surgical drapes, платья, маски, and swabs due to their high barrier properties.
- Фильтрация: Meltblown fabrics serve as efficient filter media for air, жидкости, and other applications, effectively removing particles and contaminants.
- Одежда: These fabrics are utilized as interlinings and insulation layers in clothing, providing warmth and structure.
- Салфетки: Meltblown nonwoven fabrics are commonly used to produce wet wipes for personal and industrial cleaning purposes.
- Акустика: They are employed as sound insulation in buildings and vehicles, effectively reducing noise levels.