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chenxing
Product Description
The Plastic PET Monofilament Extruder Machine produces high-quality monofilament from PET, PBT or PP — including recycled PET bottle flake. The line is engineered for continuous production of filaments used in paint brushes, rollers, drawing brushes, cleaning brushes, brooms, toothbrush bristles, rope, synthetic hair, false eyelashes, cosmetic brushes, safety nets, export craft trees and other industrial & consumer products. The system supports a wide variety of filament types: blooming / non-blooming, horizontal, coiled, hollow and solid monofilaments in multiple cross-sections and diameters.
A turnkey extrusion line for broom & brush filament production: vacuum/spiral feeding → single-screw extrusion → water cooling calibration → hot drawing/stretching → oil coating & heating → final calibration → filament winding & packing. Designed for robust, energy-efficient operation and easy automation, the line improves raw material utilization and end-product consistency.
Typical machine line configuration (from image):
SJ45 / SJ55 / SJ65 / SJ70 / SJ80 / SJ90 / SJ105 single-screw extruder (model selected by capacity/diameter)
Water cooling calibration tank (filament sizing)
Tensile rollers unit (controlled drawing)
Hot water stretching tank (controlled orientation & strength)
Oil coating device (lubrication / texture finish)
Online heating oven (stabilize filament)
Final calibration oven (final size & temper)
Filament winding machine (spool take-up)
Filament packing machine (spool wrapping/boxing)
Filament cutting machine (if short cut lengths required)
Raw material dryer (pre-drying PET flakes/granules)
Material feeder (vacuum / spiral loader)
Supporting electrical components (standard): Inverter: ABB / DELTA · Temperature controller: Omron · Main auto-breaker: Siemens · AC contactor: Siemens.
Process flow: Raw material (virgin or recycled PET/PBT/PP) → dryer & feeder → single-screw extruder → die → water cooling calibration tank → tensile rollers → hot water stretching → oil coating → heating & final calibration ovens → winding → packing.
Materials flexibility: Accepts virgin PET / PBT / PP and recycled PET bottle flakes for cost efficiency and sustainability.
Wide filament variety: Produces solid, hollow, coiled, flowered (blooming) and non-flowered monofilaments in custom cross-sections and diameters for diverse brush and rope applications.
Precision sizing & drawing: Water calibration + tensile rollers + hot stretch tank deliver consistent filament diameter and mechanical properties.
Integrated finishing: Oil coating, online heating and final calibration ovens produce uniform surface finish and improved product performance.
Automation & quality control: PLC-controlled line with reliable ABB/Delta inverters and Omron temperature controllers for repeatable runs and simplified operation.
Complete line scope: From raw-material drying to winding and packing — ready for immediate production and export.
Proven design: Developed with 20+ years of filament extrusion experience to maximize raw material utilization and end-product quality.
Paintbrush & roller bristles
Household & industrial cleaning brushes, brooms
Toothbrush bristles (with appropriate downstream processing)
Rope yarns, netting & technical filaments
Synthetic hair, false eyelashes and cosmetic brushes
Specialty items: Christmas tree bristles, craft filaments
Q1 — What raw materials can this line process?
A1 — The standard line processes virgin PET, PBT, PP and recycled PET bottle flakes. Material grade and moisture content affect final output; a raw-material dryer and proper feed control are included.
Q2 — What filament diameters and cross-sections are possible?
A2 — Diameters and cross-sections are determined by die design and drawing/stretch parameters. The line supports a broad range from fine bristle sizes to thicker rope yarn profiles. Provide target diameters and product samples for a customized die and process setup.
Q3 — How is filament quality ensured?
A3 — Quality is controlled via the water-cooling calibration tank, servo-driven tensile rollers, controlled hot stretching, and final calibration ovens. PLC and precision temperature controllers maintain repeatable conditions.
Q4 — What is the typical staffing and operation complexity?
A4 — The line is designed for continuous, semi-automated operation. Staffing depends on production scale; most lines operate reliably with 1–3 trained operators handling feed, monitoring and packing.
Q5 — Do you provide installation, commissioning and training?
A5 — Yes. Installation, commissioning, operator training and technical support are available. On-site service can be arranged as part of the commercial offer.
Q6 — Can you handle recycled PET input and variability?
A6 — Yes — the line includes dryers and feeder options tailored for recycled PET. For consistent output, we recommend material testing to set extrusion and drawing parameters.
Q7 — What spare parts / electrical brands are used?
A7 — Core electrical components are high-quality industrial brands: ABB/Delta inverters, Omron temperature controllers, Siemens breakers/contactors. Spare parts kits can be supplied.
Q8 — How do I get a quotation with capacity & footprint?
A8 — Provide desired filament type, target daily throughput, and filament diameter range. We will supply model recommendations (extruder size), power needs and a packaged quotation including installation scope.
