Bubble pinhole problem

Root cause analysis：

1. Raw material issuesPlasticizers and stabilizers are not mixed evenly, resulting in gas production during the reaction; The raw materials are damp, and when heated, the water vapor 'explodes the pot'.
2. Temperature issueThe extruder temperature is too high, causing PVC to decompose and bubble; The temperature of the mold is uneven, and gas is trapped in the tiles.
3. Cooling problemThe cooling is too fast, and the gas is' frozen ', forming pinholes.
4. Equipment issueScrew wear, mold blockage, and inability to release gas.

Exclusion steps：

1. raw material processingEnsure that the raw materials are dry, with a humidity of ≤ 0.3%, and avoid the influence of water vapor.

2. temperature control：

   • Adjust the temperature of each section of the extruder according to the process table to avoid overheating.
   • The temperature of the mold is uniform to avoid local 'holding up'.

3. Cooling adjustmentSegmented cooling, slow cooling first and then fast cooling, giving the gas' escape time '.

4. Equipment maintenanceRegularly clean the screws and molds to ensure smooth exhaust.

5. Using additivesConsider using nano additives to remove bubbles from the source, enhance compatibility, and optimize leveling.

Poor plasticization problem

Root cause analysis：

1. Raw material factorsPoor quality of PVC resin, excessive number of impurity particles, high molecular weight or high crystallinity; Improper formulation of additives, such as excessive stabilizers, can lead to prolonged plasticization time.
2. Processing temperatureLow temperature makes it difficult for PVC resin to fully plasticize; If the temperature is too high, it may cause PVC resin to decompose.
3. shear rateThe shear rate is too high or too low, which affects the plasticizing effect.
4. Equipment factorsPoor performance of mixing equipment affects the uniformity of mixing PVC resin and additives; The temperature control system of the extrusion equipment is unstable or the screw speed is improper.
5. other factorsExcessive humidity in the environment leads to PVC resin absorbing too much moisture; Pollution during the production process, such as dust and oil stains in the air, adheres to the surface of PVC resin.

Exclusion steps：

1. Optimize raw materialsChoose high-quality PVC resin and adjust the ratio of additives.
2. Control the processing temperatureAdjust the processing temperature of the extruder according to the characteristics of PVC resin.
3. Adjust the cutting rateControl the shear rate within an appropriate range by adjusting the screw speed and other methods.
4. maintain equipmentRegularly maintain mixing and extrusion equipment to ensure their stable performance.
5. Control environmental humidityProduction in a dry environment or pre drying treatment of PVC resin.
6. reduce pollutionKeep the production environment clean and avoid pollutants from adhering to the surface of PVC resin.

The problem of condensation and dripping water

Root cause analysisThe dripping of water on the resin tile roof is due to the high indoor temperature and low outdoor temperature in winter. When hot and cold air flows meet on the resin tile roof, water droplets are produced, which is the phenomenon of condensation. Resin tiles do not absorb water, and if water droplets condense too much, they will drip down.

Exclusion steps：

1. Make insulation layerApply insulation layer to the roof to reduce the chance of encountering cold and hot air currents.
2. Enhance ventilationEnhance indoor ventilation and reduce temperature differences between indoor and outdoor environments.

Abnormal noise and vibration issues

Root cause analysis：

1. Tile connectionThe connection between tiles is not firm or cushioning materials such as gaskets are not installed correctly, resulting in abnormal noise when wind blows or temperature changes occur.
2. thermal expansion and contractionResin tiles have thermal expansion and contraction properties, which cause small movements and abnormal noises when the temperature changes.
3. Installation issuesThe resin tiles are not securely installed or have loose parts, which can cause vibration and friction when blown by wind, resulting in abnormal noise.

Exclusion steps：

1. check installationCheck if the installation of resin tiles is secure, ensure tight connections between tiles, and use appropriate cushioning materials and gaskets.
2. Strengthening and fixingReinforce and fix loose or unstable tiles.
3. Consider shock absorption measuresUse shock-absorbing pads and other materials during the installation of resin tiles to reduce friction and vibration between tiles.
4. Regular inspection and maintenanceRegularly inspect the installation of resin tiles, promptly identify and repair any loose or damaged tiles.