infrared halogen lamp play the following important roles in the PET blow moulding process:
Rapid and even heating of preforms:Rapid heating: halogen infrared heat lamp can quickly emit infrared radiation after being energised, and transfer the energy to PET preforms, so that the preforms can be heated up quickly. For example, in a short time (usually a few seconds to a dozen seconds) can be heated from room temperature to the temperature suitable for blow moulding preforms (generally between 90-120 \\u2103), greatly improving production efficiency.
Evenly heated: the preforms rotate while moving forward in the oven, together with the reasonable arrangement of halogen heating lamps in the oven, all parts of the preforms can receive infrared radiation uniformly, avoiding local overheating or overcooling of the preforms. This can ensure that the wall thickness of the blown bottles is uniform and the quality is stable.
Helps preform stretching: In the process of bottle blowing, preforms need to be stretched first to make their shapes meet the requirements. After infrared heating, PET preforms become soft and easier to be stretched under the action of the stretching rod, and the stretching process is more even and smooth, which is conducive to the formation of regular shape and accurate size of the bottle. If the preforms are not heated evenly or at a sufficient temperature, problems such as cracking and deformation may occur during stretching.
Improve the plasticity of the material: PET material will be transformed from solid state to high elasticity state within a certain temperature range, at this time the plasticity of the material is greatly enhanced. The heat provided by the infrared heating tube puts the PET preforms in a highly elastic state, which is convenient for blow moulding, and enables the blow moulded bottles to have better shape stability and mechanical properties, such as higher tensile strength and impact strength.
Reduce energy consumption: infrared heating tube energy use efficiency is high, can be directly on the bottle blank heating, reducing the loss of energy in the intermediate medium. Compared with the traditional heating method, under the premise of achieving the same heating effect, infrared heating tube can reduce energy consumption and save production costs.
Adapt to the heating requirements of different specifications of preforms: for different specifications (such as size, shape, thickness) of PET preforms,industrial infrared heat lamp can be adjusted by adjusting the power, number, arrangement and heating time and other parameters to meet its specific heating requirements, with strong adaptability and flexibility.
