How to Identify the Quality of Melamine Tableware Through Touch and Tapping Tests?

How to Identify the Quality of Melamine Tableware Through Touch and Tapping Tests?

High-quality melamine tableware not only excels in appearance and safety but can also be distinguished through touch and tapping tests. The touch test helps determine the material purity, while the tapping test reveals the density and durability. Below are detailed testing methods and comparison analyses:

1. Touch Test (Hand Feel Detection)

(1) Surface Smoothness

✅ High-Quality Melamine (A8/A5):
✔ Smooth and delicate surface, similar to ceramic.
✔ No burrs or rough spots; edges are rounded and do not feel sharp.
✔ Well-polished, with a slight frictional resistance when touched—neither too slippery nor sticky.

❌ Low-Quality Melamine (A1/Recycled):
✖ Surface may have slight bumps, burrs, or roughness.
✖ Edges may be sharper, lacking a refined texture, and may feel like plastic.
✖ Over time, the surface may develop scratches or discoloration.

✅ Test Method: Slide your fingers across the surface of the tableware to feel for smoothness and check for any sharp edges.

(2) Weight & Density

✅ High-Quality Melamine (A8/A5):
✔ Feels solid and has a moderate weight—not too heavy or too light.
✔ High material density, giving it a firm and premium feel.

❌ Low-Quality Melamine (A1/Recycled):
✖ May feel either too light (less stone powder) or too heavy (excessive stone powder).
✖ Inferior tableware may feel loose, and tapping it sounds dull.

✅ Test Method: Hold the tableware in your hand and weigh it by feel—avoid products that feel too light or overly heavy.

2. Tapping Test (Sound Detection)

(1) Tapping Sound

✅ High-Quality Melamine (A8/A5):
✔ Produces a crisp, clear sound when tapped with a finger or metal spoon, resembling ceramic.
✔ High-density material enhances sound resonance.

❌ Low-Quality Melamine (A1/Recycled):
✖ Produces a dull, low-pitched sound, similar to plastic.
✖ May have an obvious vibration feeling, indicating lower density or uneven material composition.

✅ Test Method:

• Lightly tap the edge of the tableware with a finger or spoon and listen for the sound quality.

• Gently knock two pieces of tableware together—high-quality melamine will produce a crisp sound, while inferior products will sound dull or plasticky.

(2) Resonance Test

✅ High-Quality Melamine (A8/A5):
✔ The tapping sound lingers slightly, indicating high density and compact material.

❌ Low-Quality Melamine (A1/Recycled):
✖ The sound quickly fades, indicating lower density and the presence of excess stone powder or plastic fillers.

✅ Test Method: Tap the tableware with a spoon and listen for resonance—the denser the material, the longer the sound lasts.

3. How to Choose High-Quality Melamine Tableware Using Touch & Tapping Tests?