Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Polypropylene Barrel Component – Rubber and Plastic Product Manufacturing

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.

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.

View Product Details

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

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

Forklift Entry Rails

Structural rails designed to guide forklift entry into modular plastic pallets for safe and precise handling.

Anti-Slip Surface

Anti-slip surface for modular injection molded plastic pallets enhances load stability and workplace safety.

Barrier Layer

A specialized layer in multi-layer co-extruded films that prevents gas, moisture, and aroma transmission to protect product quality.

Sealant Layer

Sealant layer in multi-layer co-extruded barrier films for hermetic sealing and product protection.

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.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Polypropylene Barrel