21/09/15
Process Considerations for High Speed Blow Molding Machine products
At present, the preform openings used by High Speed Blow Molding Machine products in the industry when producing hot-fill bottles are generally divided into crystallization openings and non-crystallization openings, and the non-crystallization openings are divided into 28 openings and 38 openings. As far as the bottle mouth is concerned, the crystallized mouth can withstand 100 degrees without deformation, but the upper limit of the heat resistance of the non-crystalline mouth is only 92 degrees.
21/09/15
Working process of High Speed Blow Moulding Machine products
The blowing process of High Speed Blow Molding Machine products includes: stretching-first blowing-second blowing, the time of the three actions is very short, but they must be well coordinated, especially the first two steps determine the overall distribution of the material, blowing The quality is good or bad. Therefore, it is necessary to adjust: stretching start timing, stretching speed, pre-blowing start and end timing, pre-blowing pressure, pre-blowing flow rate, etc.
21/09/15
FAQ for High Speed Blow Moulding Machine products
High Speed Blow Molding Machine products common problems and solutions in the blowing process 1. What to do with the material accumulated at the bottom of the bottle blown out by the blow molding machine? Analysis: The common cause of bottle accumulation is that the stretching rod is not adjusted in place. It is recommended that the stretching ratio between the preform and the bottle body should be 1:2.5 (not including the bottle mouth), and at the same time adjust the heating temperature to prolong the pre-blowing gas.
21/09/15
Process flow of High Speed Blow Molding Machine products
The blow molding process of High Speed Blow Molding Machine products is a two-way stretching process, in which the PET chains are bidirectionally extended, oriented and aligned, which increases the mechanical properties of the bottle wall and improves the tensile, tensile, and anti- Impact strength and good air tightness. Although stretching helps to improve the strength, it should not be stretched too much. The stretch-to-expansion ratio should be controlled: the radial direction should not exceed 3.5-4.2, and the axial direction should not exceed 2.8-3.1. The wall thickness of the preform should not exceed 4.5mm.
21/09/15
Principle of High Speed Blow Molding Machine products
High Speed Blow Molding Machine products principle: The blowing process of the blow molding machine is divided into two parts. 1. Preheat The preform (embryo) is irradiated by an infrared high-temperature lamp to heat and soften the bad part of the preform (embryo). In order to maintain the shape of the bottle mouth, the mouth of the preform (embryo) does not need to be heated, so a certain The cooling device performs cooling operation on it.
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