Surface treatment of plastic parts-- texture

Surface treatment of plastic parts-- texture

Leather pattern - leather pattern is also called biting flower, which refers to a process of chemically etching the desired color on the mold (mostly a concave mold).

Classification of striae

Generally, according to the pattern, it can be divided into several forms such as pear pattern, leather pattern and geometric pattern. The pear pattern refers to the uniform rough surface like frosted glass commonly seen on ordinary plastics. It is named because its texture has fine particles like pear skin. Leather grain is an attempt to simulate the texture of the leather surface and is applied to car steering wheels and interior trim panels. As for geometric patterns, the repeated arrangement of simple shapes is used to produce visual rhythm.

Skin texture is classified according to regional standards

Mold-MT standard (European and American)

Nihong Standard (Japan)

Yanksin Standard (China)

 

 

The role of texture

1. Decorate the appearance to make the product more beautiful.

2. Since the surface of the glossy product is easily scratched and easily stained with dust and fingerprints, the skin texture can cover the surface flaws of the product, making the product more beautiful and reducing the defective rate. 3. A little air can be accommodated between the surface of the product and the surface of the cavity, so as not to form vacuum adsorption, making demoulding easier. 4. Non-slip, anti-rotation, good hand feeling. 5. Made of pockmarked or matte surface to prevent light reflection and eliminate visual fatigue.

 

 

The manufacturing process of skin texture

1. Mold cleaning

2. Apply seal protection to areas that do not require skin texture

3. Transfer the pattern to the surface of the mold. Pear pattern: Spray acid-resistant masking substances. Leather texture: Apply transfer paper to the metal surface to transfer the pattern to the mold. One of the most critical technologies of mold texture is how the pattern is transferred to the mold surface. This process largely determines the appearance and detail of the pattern. In fact, since a single etching can theoretically produce only one depth of texture, the process of "pattern transfer and etching" may have to be repeated more than seven or eight times in the process of general leather texture and texture to obtain detailed and multi-dimensional textures. Layered pattern.

4. Dip the mold into chemicals for etching (the part with transfer pattern will not be etched)

5. Finally, remove the residual chemical substances and adjust the gloss by sandblasting.