Loose yarn fiberglass ( Handi, Patti & Roving )

Loose Yarn Fiberglass (Handi, Patti & Roving)

Loose yarn fiberglass includes untwisted or slightly twisted strands of glass fiber available in different forms like Handi, Patti, and Roving. Each type serves various reinforcement, winding, and composite applications.

Types of Loose Yarn Fiberglass:

1. Handi (Fiberglass Yarn Rolls)

Soft rolls of fine fiberglass yarn

Easy to handle and feed in manual or semi-auto processes

Mostly used for wrapping, sewing, braiding, and weaving

2. Patti (Flat Fiberglass Strip Yarn)

Wider and flatter than Handi

Good for surface reinforcement and wrapping in GRC/GRP applications

Common in decorative panel molds, waterproofing, and surface treatment

3. Roving (Direct or Assembled Roving)

A bundle of continuous, untwisted filaments

High tensile strength and volume

Used in pultrusion, filament winding, spray-up, and hand lay-up processes

Key Properties:

High tensile strength

Alkali and chemical resistant

Suitable for manual handling and processing

Non-corrosive and moisture resistant

Compatible with polyester, epoxy, and vinyl ester resins

Common Uses:

GRC / GRP Products

Reinforcement for architectural panels, planters, cornices

Layered inside molds for extra strength

Filament Winding

Making pipes, tanks, poles, and housings
Manual Lay-up

Boat building, roofing sheets, and vehicle bodies
Wrapping / Stitching

Wrapping around joints, duct systems, and in insulation stitching

Textile and Braiding

Used as raw material in braided fiberglass ropes, tapes, and cloths