In order to facilitate the removal of plastic products from the mould and prevent the scratch of the surface of the product when the brick mould is demoulded, the surface of the plastic products parallel to the direction of the mould opening should have a reasonable demoulding slope. The slope depends on the shrinkage of plastic, the shape of plastic products, the thickness of the wall and its position. Generally, the demoulding slope is 30 - 45. When plastic products have special requirements or higher precision requirements, smaller inclination should be selected; along the direction of opening moulds, smaller inclination should also be selected for larger parts of plastic products; when plastic products are complex in shape, thick wall and difficult to demould, larger inclination should be adopted; when leather pattern or reinforced products are on the side, the inclination can be obtained. Larger. In order to keep the plastic products on one side of the mould, the slope of the forming part on the side should be smaller, while the slope on the other side should be larger.
The correct way to use the mould for the brick is as follows:
1. First of all, there must be a reasonable construction site. The plastic moulds of slope protection bricks should be laid evenly and injected with cement.
2. Reasonable use of lubricant or special demoulding agent for demoulding in order to reduce the wear of the die.
3. Generally, the forming time is 24 hours, and then assistant demoulding is carried out through vibration platform or vibration bar.