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How To Make Best Quartz Stone Slabs
Quartz stone is made of more than 90% of the quartz stone filler plus a few percent of the resin and auxiliary materials in the vacuum vibration pressure molding, Because of the high content of quartz stone in the production, it is called artificial quartz stone.
Quartz stone was first developed and produced by Breton, Italy. Breton quartz stone production equipment, requires an investment of 240 million dollars, before 2010, Breton equipment was not allowed to be sold to China. In the past few years, some manufacturers in China have improved independent research and development equipment through imitation. Due to the unstable operation of the equipment, the high maintenance rate of the equipment, the qualified rate of production on quartz slabs is not high, and quality defects like pinholes, impurities, paper sag, color differences, deformation, and others happen often. Through the continuous improvement of technology in the past, the quality problem of quartz slabs has been solved. The artificial quartz stone products have also been recognized by the majority of consumers. However, at present, most factories in the industry do not have a good grasp of the key technology, resulting in unqualified slabs being produced, such as those with high resin content, slabs with pores, Some slabs has to be treated by repairing the surface. It will certainly affect the quality of quartz stone, leaving a bad impression on customers, and affecting the healthy development of the quartz stone industry.
Key Points for Making the Best Quartz Stone Slabs
In order to make the best artificial quartz stone slabs, the following four points are key:
First: The Selection Of Equipment
Today, quartz stone fixed thickness polishing equipment technology has matured. The press machine is key equipment for the production of quartz stone, and some equipment manufacturers mistakenly believe that the greater the bias force, the better, The press machine match with the vibration motor is improper, making the equipment unstable, high maintenance rate. In order to reduce the maintenance rate of equipment, some manufacturers use multiple small vibration motors. Although the maintenance rate of the equipment is low, the resin content of the slabs is high. Multicolor slabs will have color infiltration. Due to excessive vibration, the motor is out of sync, resulting in partial consumption of extreme force.
Therefore, a good press machine should have the following characteristics:
- Stable operation of equipment, low maintenance rate
- Good vacuum sealing
- Low resin content in the formula
- Easy operation, easy maintenance
Second: Qualified Raw Materials
Before purchasing the raw materials, find a better supplier with a good reputation and credit, Resin, quartz sand powder, glass, color paste, curing agent, and coupling agent are necessary raw materials for the production of quartz stone slabs.
1. Resin
- Full name: unsaturated polyester resin
- Polymer solid content: ≥65%
- Resin viscosity: 850 ~ 1200Mpa.s(Adjust resin viscosity according to temperature)
- Resin heating peak temperature: :160℃ ~ 170℃
- Appearance: special resin for quartz stone, colorless, no impurities, translucent liquid.
2. Quartz Powder
- Fineness requirement: 240 mesh ~ 400 mesh
- Whiteness requirements: ≥95 degrees (Use resin and quartz powder to make a paste, requiring white or translucent to be qualified, black or yellow is unqualified.)
- Sio2 content: ≥98%
3. Quartz Sand
- Uniform particles, no impurities, no foreign matter, and no metal iron.
- 4 ~ 120 mesh and no wind-fossil particles.
4. Glass
- Transparent glass, requiring no shredded paper, debris, or other miscellaneous glass particles.
- Mirror glass. no fade, uniform gray bottom, and white bottom.
5. The Color Paste
Requires direct use of the color paste, because the color powder can not be completely dispersed, which will lead to a plate color difference.
6. Curing Agent
Medium temperature curing agent: tert-butyl diethyl caproate peroxide.(OT) Room temperature initiator: methyl ethyl ketone peroxide Accelerator: cobalt naphthenate.
7. Coupling Agent
- Silane coupling agent (KH-570)
Third: Reasonable Grading Ratio.
Reasonable grading ratios and particle packing density in the formula are the keys to producing high-quality quartz stone. If the proportion is not appropriate, it will cause plate deformation, porosity, cracking, and other quality problems.
There are also many quartz stone manufacturers that get the formula from other factories or equipment manufacturers. We found that even for a press machine from the same manufacturer, due to processing, installation, or a current error, it will cause different press pressure. The technical formula must be adjusted on site in order to produce qualified quartz stone slabs.
Four: Production Process And Operation Specifications
- Formulate the production process and establish work instructions.
- The same batch of slab particle powder must be premixed and put into use, because quartz powder is a natural ore, each package has different degrees of color difference.
- During production, try to avoid using metal tools, due to friction between metal and quartz stone, which will cause blackening.
About Horizon
Horizon stands out as a leading manufacturer of artificial quartz slabs in China, proudly operating our own factory. We specialize in supplying top-quality quartz slabs to esteemed brand-owners, wholesalers, distributors, and fabricators worldwide. With our robust export capabilities, we consistently ship around 8,000 containers annually to over 50 countries, solidifying our position as a trusted global supplier.
Our products include quartz calacatta, carrara, fine grain & diamond, pure colors, unique patterns.
Thickness: 12mm, 15mm, 18mm, 20 mm, 30 mm
Standard Size: 3200x1600mm(126×63 inch)
Smallest Size: 2800x1400mm(110.2×55.1 inch)
Biggest Size: 3500x2000mm(137.8×78.4 inch)
Surface: Polished
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