Injection Molding Process for Plastic Mobile Toilets

The injection molding process for plastic mobile toilets centers on integral one-piece molding, completing the main structure through one-time injection molding or compression molding, featuring strong sealing, stable structure, and excellent weather resistance.

Process Advantages

The injection molding process for plastic mobile toilets employs one-piece molding technology, completely eliminating the gaps in traditional spliced structures and fundamentally solving the issue of water seepage. According to a 2023 report by the China Building Waterproofing Association, such products can withstand heavy rainfall of 100mm/h without leakage, far exceeding conventional building waterproofing standards. In terms of structural stability, the one-piece design enables it to withstand winds of up to 12 levels (in compliance with GB/T 29737-2013 standards) and has passed extreme temperature difference tests from -30℃ to 60℃ without deformation (third-party test report CNAS-AL2023-0456), demonstrating excellent weather resistance and impact resistance.

Process Details and Material Requirements

High-quality plastic mobile toilets must meet the following key parameters:

• Material Selection: The main body is made of FRP (glass fiber reinforced plastic) composite material with a wall thickness of ≥5mm, ensuring a balance between structural strength and lightweight design, with an overall weight controlled between 800-1200kg for easy lifting and transportation.
• Skeleton Design: The galvanized layer thickness of the built-in steel structure skeleton must be ≥80μm to prevent structural failure due to corrosion during long-term use.
• Avoidance Tip: Beware of inferior products with a wall thickness of less than 3mm, which, due to insufficient material strength, have a transportation damage rate of up to 25% (industry notification data) and are prone to cracking due to temperature changes.

Key Production Process Steps

1. Mold Design: Mold precision directly affects the sealing and durability of the finished product. High-precision CNC machining is required to ensure dimensional errors are controlled within ±0.1mm, preventing product leakage due to mold deformation.
2. Injection Molding: Strict control of injection temperature (usually 200-250℃) and pressure (80-120MPa) is necessary to prevent material decomposition due to excessive temperature or defects such as bubbles and deformation due to insufficient pressure.
3. Assembly Process: After the main body is molded, accessories such as doors, windows, and sewage systems need to be installed, and airtightness tests (such as pressurizing to 500Pa and maintaining for 10 minutes without leakage) are conducted to ensure overall performance.

This process significantly enhances the durability and applicability of plastic mobile toilets through standardized production processes and strict quality control, making them particularly suitable for outdoor and temporary venues with high requirements for waterproofing and wind resistance.