The production process of resin roof tiles is a key factor in determining whether a tile lacks high value. Many purchasers focus solely on the color characteristics of samples, completely overlooking the differences in each production step—from formulation to roll-forming—which results in the tiles developing peeling and fading on their surfaces after only about two years of use.
What happens if the ingredient ratios are off by just a little?
The main raw materials for resin roofing tiles actually include ASA engineering resin and PVC pellets. The ASA resin provides UV resistance, while the PVC provides the structural strength necessary for the product. In addition, stabilizers and color masterbatches must be added. If there is even a slight deviation of two percentage points in the formulation ratio, the final tiles will appear grayish.
During the mixing stage, the mixture is typically stirred continuously for 8 to 10 minutes using a high-speed mixer; however, small workshops often shorten this process to just 3 minutes to save time, which directly increases the brittleness of the tiles.
How is the rolling temperature controlled?
First, feed the extruded sheet into the roller press; as for the temperature, it’s stuck at130 to 150 degrees CelsiusWithin this range, if the temperature exceeds this range, the material will turn yellow; if the temperature falls below this range, the material's surface will peel.
Once the molding is complete, the part must be cooled and then cut. followed by a quality inspection. As part of this production process, the finished products must undergo a drop-ball impact test and a water absorption test. Any non-conforming products that fail these tests must be completely sorted out; this constitutes the final checkpoint in the resin roof tile production process.
From the formulation stage, through the rolling process, to the final factory inspection, every key step along the entire production line is closely interconnected and interdependent. If you understand these key steps, you’ll naturally have a clear idea of what to look for when shopping, and you won’t be easily fooled by superficial appearance or style.
Keywords: Resin Roof Tile Manufacturing Process
