Method of making fire-resisting synthetic boards

A process for making fire-resisting synthetic board, comprising the steps of:

• A:
• preparing a coating material by:
• (i) grinding dried clay into powder and then using a screen to filter impurities from the clay powder thus obtained;
• (ii) mixing 40-60% of the clay powder thus obtained with 20-40% urea, 5-10% water, 1-5% stabilizing agent, 5-10% latex, 10-15% sodium chloride, and 5-10% pigment to form a mixture;
• (iii) putting the mixture thus obtained into a mixing tank and adding a bubble eliminating agent to the mixing tank for mixing with the mixture into the desired coating material;
• B:
• preparing an intermediate bonding material by:
• (i) grinding dried clay into powder and then using a screen to filter impurities from the clay powder thus obtained;
• (ii) mixing 50-70% of the clay powder thus obtained with 20-35% urea, 5-10% water, 5-10% sodium chloride, and 1-5% stabilizing agent;
• C:
• dipping two pieces of fabric into the prepared coating material;
• D:
• squeezing the coated fabrics to a predetermined thickness;
• E:
• drying the coated fabrics;
• F:
• bonding the dried, coated fabrics together by interposing a layer of the intermediate bonding material between the dried, coated fabrics;
• and then squeezing the dried, coated fabrics together with the intermediate bonding material therebetween, so as to form a blank board;
• and
• G. drying and squeezing the blank board in a kiln, causing the layer of the intermediate bonding material to foam into a foamed structure.