Load binder,also called as chain binder,is a device used to tighten chains that are holding loads in place on a truck bed.
There are two types of load binders,ratchet type and lever type,the main difference between these two types is the method to tighten the binder.
And usually a load binder is painted as either red or green,and of course we can paint it with the colors you like.
While choosing the right load binder,we'd better choose them according to the chains,make the binder and chain are of equal or very similar strength.
Lever Type Load Binder,Ratchet Type Load Binder,Standard Type Load Binder,Steel Forged Load Binder WINNERLIFTING SAFETY EQUIPMENT CO.,LTD. , https://www.winnerlifting.com
[Jiuzhi Plastics News] The thermal properties of plastic materials to be considered during thermoforming processing include thermal deformation temperature, softening temperature range, thermal mechanical strength, specific heat capacity, thermal conductivity, thermal expansion coefficient, and thermal diffusion. Coefficient and thermal stability, etc.
The heat distortion temperature is an important temperature condition to be considered during the thermoforming process. Theoretically, the upper limit of the internal temperature of the material during the molding process cannot be higher than the no-load heat distortion temperature of the material itself, otherwise the gravity of the workpiece will be destroyed during the molding process. Pieces. For large parts, the heat distortion temperature of the material under 1.82 MPa is generally used as the temperature during processing, while for small parts, the heat distortion temperature of the material under the load of 0.46 MPa is generally taken as the upper limit temperature of the thermoforming. In actual molding, since the surface temperature of the plastic sheet is higher than the internal temperature, the process control temperature tends to be much higher than the heat distortion temperature of the material.
The temperature of the material during the thermoforming process drops rapidly, requiring the material to maintain proper flexibility, plasticity and elasticity over a wide temperature range to ensure the integrity of the corners of the final product. The material also needs to have a high thermal mechanical strength, otherwise the thickness will be severely uneven after being drawn in the hot state, which requires that the molecular weight of the thermoplastic used for thermoforming should not be too low. In addition, the thermoforming processability of the material can be improved by introducing a strong polar group or a crosslinked structure in the molecular chain to limit the mutual slip of the molecular Chains.
In actual production, the thermal expansion of the plastic during the heating phase can be ignored, but the dimensional shrinkage during the cooling phase cannot be ignored. When the product contains metal inserts or when the plastic product needs to be embedded in a metal container, it should be considered that the shrinkage of the plastic is greater than that of the metal. When the male mold is used, the plastic is hard to be pulled out due to the shrinkage of the plastic on the surface of the mold. This is especially important when molding materials with large thermal expansion coefficients such as polyolefin and polyvinyl chloride (PVC).