INDUSTRY COMPONENT

Polypropylene Barrel

Medical-grade polypropylene barrel for syringe applications requiring chemical resistance and biocompatibility.

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Component Specifications

Definition
A precision-molded cylindrical component made from medical-grade polypropylene, designed as the main fluid reservoir in disposable syringes. It features graduated volume markings, luer lock or slip tip connections, and smooth internal surfaces to minimize fluid retention. Manufactured under cleanroom conditions to meet pharmaceutical and medical device standards.
Working Principle
Functions as a sterile fluid container where plunger movement creates pressure differentials for accurate liquid aspiration and dispensing. The barrel maintains structural integrity during use while providing clear visibility of contents through transparent or translucent material.
Materials
Medical-grade polypropylene (PP) complying with USP Class VI, ISO 10993, and FDA 21 CFR 177.1520. Typically contains additives for UV stabilization, colorants for coding, and may include radiopaque fillers for X-ray visibility.
Technical Parameters
  • Glide Force 1-8 N
  • Length Range 30-150 mm
  • Diameter Range 5-50 mm
  • Surface Finish Ra ≤ 0.8 μm
  • Wall Thickness 0.8-2.5 mm
  • Volume Capacity 1-60 mL
  • Breakloose Force 3-15 N
  • Extractable Volume ≤ 3% of nominal volume
Standards
ISO 7886-1, ISO 11040-4, ISO 13485, ASTM D4101, USP <87> <88>

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Polypropylene Barrel.

polypropylene syringe barrel medical syringe component disposable syringe barrel PP medical device ISO 7886 compliant barrel pharmaceutical syringe parts Polypropylene Barrel Polypropylene Barrel in Rubber and Plastic Product Manufacturing

Parent Products

This component is used in the following industrial products

Medical-Grade Polypropylene Syringe

Sterile disposable syringe manufactured from medical-grade polypropylene for clinical applications.

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Engineering Analysis

Risks & Mitigation
  • Material degradation from incompatible chemicals
  • Leakage due to poor seal with plunger
  • Graduation inaccuracy affecting dosage
  • Particulate generation during use
  • Biological contamination if sterility compromised
FMEA Triads
Trigger: Inconsistent wall thickness during molding
Failure: Barrel deformation under pressure
Mitigation: Implement statistical process control for injection molding parameters and conduct 100% dimensional inspection
Trigger: Material impurities or contamination
Failure: Chemical leaching affecting drug stability
Mitigation: Use certified medical-grade raw materials with lot traceability and conduct extractables testing per USP <1663>

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±2% of nominal volume for graduation accuracy, ±0.1 mm for critical dimensions
Test Method
ISO 7886-1 for sterility, leakage, and force requirements; USP <381> for elastomeric closures; ISO 11040-4 for prefilled syringes

Buyer Feedback

★★★★☆ 4.9 / 5.0 (33 reviews)

"Found 27+ suppliers for Polypropylene Barrel on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Polypropylene Barrel is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Rubber and Plastic Product Manufacturing environments. No issues with the Polypropylene Barrel so far."

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Frequently Asked Questions

What sterilization methods are compatible with polypropylene syringe barrels?

Medical-grade PP barrels are compatible with ethylene oxide (EtO) gas, gamma radiation, and electron beam sterilization. Autoclaving is generally not recommended as PP may deform at high temperatures.

How are volume graduations applied to syringe barrels?

Graduations are typically molded directly into the barrel surface during injection molding or applied through pad printing with medical-grade inks that withstand sterilization and remain legible throughout shelf life.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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