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Description
If you make Plastic Engine Oil Can Bottle with material HDPE, LDPE, PP, you’ve come to the right place. Our factory manufactures over 100 sets of extrusion blow mould annually. We make sure our mold will be compatible with your extrusion blow moulding machine, no matter what brand your machine is.
Basic Specs Of Extrusion Blow Mould
Blowing Unit Steel: 40Cr
Deflashing Unit Steel: Aluminum
Neck Insert Steel: 42CrMo
Frame Steel: #45
Cavity No.: 1 to 8 cavities
Quality Control for Blow Molding Companies
In many industries specifications have been derived from long-standing practices which have been judged fair. In plastics there has been insufficient time to establish historic specifications, and it is sometimes difficult to arrive at definite figures. It must be remembered that specifications are in reality permissible variations in the product and are, therefore, yardsticks by which to measure quality.
In judging the quality against a specification we must consider all parts of the container and all types of possible defects. Specifications can, therefore, be divided into several classifications depending on whether they are in the form of actual measurements or are handled as visual controls. In addition, some of the defects may be hidden in the container and can only be appraised by some form of destructive testing.
Industrial parts and blown containers require much more rigorous testing and inspection and consequently dictate the need for quality control during manufacture. On this premise, we will review basic quality control and its use for the blow- molded container industry.
It must also be established that these tests have been successfully run on production bottles, not just on test containers made to obtain the job. With these facts behind us, we must investigate the need for and the use of quality control.
We do not believe that today’s blow molder wants to rely simply on inspection of his product. There are numerous improved techniques that should be investigated; if used properly, these will result in increased machine, material and manpower efficiency.
When this control exists, the processor or fabricator can set the degree of quality desired for a specific customer and can govern his operation to yield these results on a consistent basis. Undoubtedly if one asked a customer what degree of quality he desired he would state 100 per cent. Of course, this is impossible, even though used as a goal; everyone must settle for less than perfection.
Control is also offered to the end user through quality control techniques, since it assures him of an improved product, and also allows him to better appraise his line. The evaluation of production lots is handled by a sampling method for checking visible and functional defects
