Question 32 (Textile Technology & Fibre Science)
Compared to filaments in spunbonded nonwovens, those in meltblown nonwovens have
P. Lower orientation of molecular chains
Q. Higher orientation of molecular chains
R. Lower variability in diameter
S. Higher variability in diameter
| (A) | P & R only |
| (B) | P & S only |
| (C) | Q & R only |
| (D) | Q & S only |
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Frequently Asked Questions | FAQs
What is spun bond fabric used for?
Spunbond fabric is a non-woven fabric made from spunbonded polypropylene fibers. This type of fabric is made using a continuous extrusion process in which melted polymer is extruded through spinnerets to form a web of fine fibers that are then bonded together by heat and pressure.
Spunbond fabric is commonly used in a variety of applications, including:
Medical and hygiene products: Spunbond fabric is used to produce surgical gowns, masks, caps, and other medical and hygiene products due to its excellent barrier properties and ability to filter out bacteria and other particles.
Agriculture: Spunbond fabric is used as a protective covering for crops, as it helps to regulate temperature and humidity while preventing insects and pests from damaging the plants.
Geotextiles: Spunbond fabric is used in geotextiles to help stabilize soil, prevent erosion, and facilitate drainage in civil engineering and construction projects.
Packaging: Spunbond fabric is used in the production of packaging materials, such as tote bags, as it is lightweight, strong, and can be printed with colorful designs.
Home furnishings: Spunbond fabric is used in the production of furniture covers, drapes, and other home furnishings due to its durability and resistance to stains and water.
Overall, spunbond fabric is a versatile and widely used non-woven material that offers excellent properties for various applications.
What is melt blown non woven fabric?
Meltblown nonwoven fabric is a type of non-woven material made from thermoplastic synthetic polymer fibers. It is produced through a process called meltblowing, in which high-velocity air is used to blow molten thermoplastic material through fine nozzles to form a fine, continuous filament of fibers.
The resulting meltblown fibers are then collected onto a conveyor belt or drum, where they are bonded together using heat and pressure to form a non-woven fabric. Meltblown nonwoven fabrics have a unique structure consisting of randomly oriented fibers that are interconnected and bonded together to create a porous and breathable material.
Meltblown nonwoven fabrics are widely used in a variety of applications, including:
Medical and hygiene products: Meltblown nonwoven fabrics are used in the production of surgical masks, N95 respirators, and other medical and hygiene products due to their excellent filtration efficiency and ability to block droplets and particles.
Air and liquid filtration: Meltblown nonwoven fabrics are used as filters in air and liquid filtration systems, such as HVAC filters, water filtration systems, and vacuum cleaner bags.
Industrial and environmental applications: Meltblown nonwoven fabrics are used as insulation, soundproofing, and absorbent materials in industrial and environmental applications.
Automotive industry: Meltblown nonwoven fabrics are used in the production of car interiors, such as seat covers and door panels, due to their durability, water resistance, and ease of maintenance.
Overall, meltblown nonwoven fabrics are a versatile and widely used material that offers unique properties and benefits for various applications.