The first generation of hollow plastic building templates came out, with middle round holes and middle square holes
Encountered too many problems in practical applications, heavy weight, easy to enter the cement slurry, insufficient strength and toughness, etc.
The second generation of V-shaped is only a small part of the performance
The weight is reduced, it is still easy to enter the cement slurry, the flexural modulus is low, it is easy to absorb heat, and the thermal expansion and contraction deformation are large,
The appearance of the third-generation X-type has improved performance, and the strength is a little better than before
The strength and toughness provide a little, but the ribs will partially break during cooling and shaping. The slurry leakage is still not completely resolved. The gaps at both ends are too large to meet the site ’s full use.
The fourth-generation grid type, after ten years of technical updates, various parameters have been improved
The slurry leakage is less and less, but it is easy to produce a lot of debris when cutting, the color is single, mainly black, the black temperature is easy to deform, the thermal expansion and contraction are strong, the middle is easy to pack, and other colors Not reachable.
The birth of the fifth-generation dual-machine co-extruded small square
The use of nano-molecular materials to improve product raw material formulations and optimization design improvements on machines and molds, using dual-machine co-extrusion technology, the surface layer is replaced by white or gray, and the middle black combination, the product has been greatly improved and improved The two major problems of thermal expansion and contraction and cost. After accurate digital experiments, the size of the middle square is reasonably designed to meet the requirement of no more slurry.
