As bathroom design evolves toward higher standards of hygiene, durability, and installation efficiency, SMC (Sheet Molding Compound) technology is becoming an increasingly popular material solution.

Compared with traditional ceramic or tiled systems, SMC-based bathroom components provide significant advantages in strength, aesthetics, and manufacturing efficiency.

A notable example comes from a shower tray development project for the Japanese sanitary ware brand LIXIL, manufactured by Huabang Composites using AOC Palapreg® SMC sanitary resin systems.

Why SMC Materials Are Ideal for Modern Shower Trays

Seamless One-Piece Structure

Traditional tiled surfaces contain grout joints that easily accumulate dirt and mold.

SMC shower trays are produced through integrated molding, creating a seamless surface that improves hygiene and simplifies cleaning.

Comfortable Surface Temperature

SMC materials have lower thermal conductivity than ceramic tiles, providing a warmer and more comfortable surface for users.

This improves the bathing experience, especially in colder climates.

High Strength and Anti-Slip Safety

SMC composites combine lightweight structure with excellent mechanical strength.

Manufacturers can also engineer anti-slip textures on the surface to improve safety for households with elderly users or children.

Faster Installation

Traditional bathroom flooring requires multiple installation steps including waterproofing, tile laying, and curing.

SMC shower trays simplify installation through modular systems with adjustable leveling supports, dramatically reducing installation time.

Excellent Durability in Humid Environments

Bathroom materials must resist constant exposure to moisture and cleaning chemicals.

SMC composites provide strong resistance to:

• Water penetration

• Chemical corrosion

• Long-term humidity

These properties make them ideal for long-life sanitary applications.

Meeting Strict Surface Quality Requirements

The shower tray development project required extremely strict surface performance specifications:

• Color difference < 0.8

• Gloss ≥ 85

• DOI (Distinctness of Image) 90 ± 5

• Haze < 12

To achieve these demanding parameters, Huabang Composites worked closely with AOC material experts to optimize resin formulations.

The final solution utilized AOC Palapreg® SMC resin, which offers:

• High surface gloss

• Low shrinkage formulation

• Excellent water resistance

• Stable molding performance

This advanced resin system enabled the successful production of Class-A surface SMC shower trays, meeting premium sanitary ware standards.

Evergreen Chemicals Supporting Global SMC Manufacturers

As a composite raw materials supplier, Evergreen Chemicals provides access to AOC Palapreg® series resin systems for manufacturers in multiple industries, including:

• Sanitary ware

• Construction components

• Automotive composites

• Industrial equipment

By combining technical expertise, stable supply capability, and application knowledge, Evergreen Chemicals supports customers in transforming advanced resin technologies into high-performance composite products.

Quick Insights for Industry Professionals

What resin is commonly used for SMC sanitary ware?
High-performance unsaturated polyester resins such as AOC Palapreg® are widely used for shower trays, bathtubs, and sanitary components.

Why are SMC shower trays becoming popular?
Because they provide seamless surfaces, easier cleaning, faster installation, and better durability compared with traditional tiled systems.

What defines high-quality SMC resin?
Low shrinkage, high surface gloss potential, excellent water resistance, and stable molding performance.

Where can manufacturers source Palapreg® resin systems?
Composite material suppliers such as Evergreen Chemicals provide global access to AOC Palapreg® series products.