Electric Toothbrush Production Process Diagram: Complete Process from Injection Molding to Assembly and Key Points of Quality Inspection

In today’s competitive oral care market, manufacturers must ensure that every electric toothbrush production process is standardized, efficient, and meets high-quality requirements. This article presents a full overview of the production process diagram, from injection molding to final assembly, highlighting injection molding process standards, assembly process specifications, and the key points for quality inspection necessary to guarantee superior product performance.

Injection Molding – The Foundation of Precision

The first critical step in the electric toothbrush production process is injection molding. High-quality shell and component manufacturing rely on strict injection molding process standards, including:

Precise temperature and pressure control to prevent defects like shrinkage or warping

Material selection (commonly medical-grade ABS, PP, or TPE) for durability and aesthetics

Mold maintenance and polishing to ensure smooth finishes

Adhering to consistent injection molding process standards is vital for ensuring a strong and attractive product base.

Component Preparation – Quality Starts from Parts

After molding, key components including motor units, battery packs, PCBs, and sealing gaskets. Every component must:

Pass functional pre-tests (e.g., battery charging cycles, motor rotation tests)

Be cleaned and anti-static protected before entering the assembly area

Match design tolerances exactly to fit into the production line seamlessly

Meticulous preparation at this stage helps maintain consistency throughout the production.

Assembly – Following Strict Assembly Process Specifications

The assembly phase brings all parts together. According to professional assembly process specifications, the process typically includes:

Integrating motor, battery, and circuit board into the main shell

Ultrasonic welding or adhesive sealing of housing to ensure waterproof performance

Installation of the toothbrush head connector and vibration balancing checks

Operators must follow assembly process specifications precisely to ensure device safety, performance, and ergonomic standards.

Quality Inspection – Key Points to Guarantee Product Excellence

At multiple stages, manufacturers implement key points for quality inspection to detect and correct issues early.
Important inspections include:

Visual inspections for surface defects, scratches, or deformations

Functional testing of vibration frequency, power output, and waterproofing (IPX7/IPX8 standards)

Endurance tests such as motor continuous running tests and drop tests

Strict adherence to these key points for quality inspection ensures that every unit meets market expectations for safety, performance, and durability.

From Diagram to Delivery – Ensuring Quality at Every Step

The complete electric toothbrush production process, from injection molding through assembly to final inspection, is a highly coordinated operation.
By adhering to standardized injection molding process standards, detailed assembly process specifications, and rigorous key points for quality inspection, manufacturers can produce reliable, high-quality products efficiently.

Powsmart is a Professional factory offering OEM/ODM services invest heavily in every step to ensure stable supply and premium quality for global brands.

👉 Contact us today to learn how our strict control of every stage can support your next electric toothbrush project! https://www.powsmart.com/about-powsmart/