INDUSTRY COMPONENT

Molded Body

A molded body is a plastic component produced through injection molding, serving as the primary structural element in molded packages for industrial applications.

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Component Specifications

Definition
A molded body is a precision-engineered plastic component manufactured via injection molding processes, where molten polymer is injected into a mold cavity under high pressure and temperature. It forms the core structural framework of molded packages, providing dimensional stability, protection, and functional integration for housed components. Key characteristics include uniform wall thickness, controlled shrinkage, and specific surface finishes to meet mechanical and environmental requirements.
Working Principle
The molded body is created through thermoplastic injection molding: polymer granules are melted, injected into a closed mold under pressure (typically 500-2000 bar), cooled to solidify, and ejected. This process ensures repeatable geometry, tight tolerances, and efficient mass production. It integrates features like ribs, bosses, and snap-fits for assembly and functionality.
Materials
Engineering thermoplastics: Polycarbonate (PC), Acrylonitrile Butadiene Styrene (ABS), Polyamide (PA6, PA66), Polypropylene (PP), or glass-filled variants for enhanced strength. Material selection depends on mechanical properties (e.g., tensile strength: 40-80 MPa), thermal resistance (up to 120°C), and chemical compatibility.
Technical Parameters
  • Tolerance ±0.1 mm
  • Shrinkage Rate 0.5-1.5%
  • Surface Finish SPI A-2 (glossy) to D-3 (textured)
  • Wall Thickness 1.5-3.0 mm
  • Injection Pressure 800-1500 bar
Standards
ISO 294, ISO 20457, DIN 16742

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Molded Body.

molded body injection molding plastic component molded package industrial engineering thermoplastic manufacturing ISO standards Molded Body in Rubber and Plastic Product Manufacturing

Parent Products

This component is used in the following industrial products

Molded Package

A protective housing for photocoupler components formed through injection molding processes.

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Engineering Analysis

Risks & Mitigation
  • Dimensional inaccuracy due to mold wear
  • Material degradation from overheating
  • Stress cracking under mechanical load
  • Inconsistent quality from process variability
FMEA Triads
Trigger: Inadequate mold maintenance leading to wear
Failure: Dimensional deviations beyond tolerance limits
Mitigation: Implement regular mold inspection and cleaning schedules; use hardened steel molds; monitor production for early signs of wear.
Trigger: Improper injection parameters (e.g., high melt temperature)
Failure: Material degradation causing weak structural integrity
Mitigation: Optimize process settings via DOE (Design of Experiments); install real-time temperature sensors; use thermal-stable polymers.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Geometric dimensioning and tolerancing per ISO 1101; typical tolerance ±0.1 mm for critical dimensions
Test Method
Dimensional verification via CMM (Coordinate Measuring Machine); mechanical testing per ISO 527 for tensile strength; thermal cycling tests per IEC 60068 for environmental resistance

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 are the common defects in molded bodies and how to prevent them?

Common defects include sink marks (from insufficient cooling), warping (due to uneven shrinkage), and flash (excess material at mold seams). Prevention involves optimizing mold design (e.g., uniform wall thickness), controlling process parameters (melt temperature, injection speed), and using appropriate materials with consistent flow properties.

How does material selection impact the performance of a molded body?

Material choice affects mechanical strength, thermal stability, and chemical resistance. For example, polycarbonate offers high impact resistance, while polyamide provides better wear resistance. Glass-filled materials enhance stiffness but may increase brittleness. Selection is based on application requirements like load-bearing capacity and environmental exposure.

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.

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