Small Plastic Parts for 3C Products | Precision Custom Manufacturing

Small Plastic Parts for 3C Products | Precision Custom Manufacturing

Product Overview

We provide custom ABS, TPU, and TPR injection molding services for small plastic parts used in 3C products (Computer, Communication, and Consumer Electronics).

Small electronic plastic components require:

• Stable dimensional accuracy

• Reliable structural strength

• Consistent cosmetic surface

• High repeatability in mass production

Our precision injection molding solutions support both tooling development and plastic part production, strictly based on customer drawings and technical requirements.

Application Areas

Our small plastic parts are widely used in:

• Consumer electronic housings

• Wearable device components

• Connectors and protective covers

• Small structural brackets

• Soft-touch grips and flexible components

• Customized 3C plastic parts

These applications demand compact geometry, controlled tolerances, and stable material performance.

Material Expertise

Different 3C applications require different material characteristics.

ABS Injection Molding

• Good rigidity and dimensional stability

• Suitable for electronic housings

• Compatible with painting and surface finishing

TPU Injection Molding

• Flexible and impact resistant

• Ideal for protective covers and soft parts

• Good abrasion resistance

TPR Injection Molding

• Soft-touch surface

• Suitable for grips and cushioning parts

• Flexible but structurally stable

Material selection is optimized according to product function and assembly requirements.

Key Engineering Focus

Small plastic parts for 3C products require precise control during mold design and injection production.

1) Dimensional Accuracy for Small Geometry

Compact parts often include:

• Thin walls

• Small ribs and bosses

• Snap-fit features

• Tight assembly tolerance zones

Mold design incorporates shrinkage compensation and structural reinforcement to maintain dimensional stability.

2) Surface Quality & Appearance Control

Many 3C parts are visible components.

• Optimized gate location to minimize weld lines

• Balanced runner design to prevent sink marks

• Controlled injection parameters to reduce flash

• Cavity polishing or texture finishing as required

Surface consistency supports product appearance standards.

3) Production Stability & Repeatability

For high-volume electronic products:

• Stable mold alignment system

• Hot runner or cold runner selection based on project

• Controlled cooling system layout

• Trial molding and dimensional validation

The goal is consistent output across large production batches.

Mold & Production Specifications

• Process: Plastic Injection Molding

• Supported Materials: ABS / TPU / TPR / customized plastics

• Gate Type: Side gate / Sub gate / Pin point gate / Fan gate / Direct gate

• Runner System: Hot runner or Cold runner

• Mold Steel: 1.2343 ESR / NAK80 / S136 or equivalent

• Mold Base: LKM / HASCO / DME / FUTABA

• Mold Life: Up to 1,000,000 cycles

• Supported Drawing Formats: STP / STEP / IGS / PRT / X_T

• MOQ: 1 Set (Tooling)

Manufacturing Capabilities

• Maximum mold size: 2500 × 2000 × 1500 mm

• Machining precision: ±0.005 mm

• Injection precision: ±0.03 mm

• Lead time: 25–45 days depending on project complexity

In-house equipment includes:

• High-precision CNC machining centers

• EDM and mirror EDM

• Wire cutting machines

• Coordinate Measuring Machine (CMM)

Each mold is verified through inspection and trial molding before mass production.

Production Workflow

1. 3D file review and DFM analysis

2. Mold design confirmation

3. Precision machining and assembly

4. Trial molding and dimensional verification

5. Process optimization

6. Mass production support

This structured workflow ensures stable production for small electronic components.

Why Choose SENLAN

• Experience in small precision plastic parts for 3C products

• Material expertise in ABS, TPU, and TPR

• Stable machining and molding accuracy

• Flexible support for prototype and volume production

• Strict quality control system

• One-year after-sales support

We focus on reliable injection molding solutions for consumer electronics.

Technical FAQ

Q1: Can you support small and thin plastic parts?
Yes. Mold design and injection parameters are optimized for compact geometries and thin-wall structures.

Q2: How do you control shrinkage in ABS parts?
Shrinkage compensation is integrated into mold design, and trial molding verifies final dimensions.

Q3: Can flexible materials like TPU and TPR be processed?
Yes. Runner design and cooling layout are adjusted according to material flow characteristics.

Q4: Is multi-cavity mold design available?
Yes. Both single and multi-cavity molds can be developed based on production volume.

Q5: Do you provide both mold manufacturing and injection production?
Yes. We support full tooling and injection molding services.

Request a Quotation

To receive a quotation for ABS / TPU / TPR Injection Molding Small Parts, please provide:

• 3D product files

• Material specification

• Surface finish requirements

• Estimated annual volume

• Target delivery schedule

Our engineering team will review your project and provide a detailed proposal.