Edible oil plastic drums have gradually been widely used, its quality directly affects the quality of the products, so we should pay attention to identify its advantages and disadvantages when choosing 5-Gallon Pet Preform, so that it will not affect For future use, how should we identify its pros and cons?
1. Observe the appearance of food plastic barrels
By observing the appearance of food plastic barrels, it is possible to initially identify a large category of plastic products: elastomers, thermoplastics or thermosets. Generally, the elastomer has a rubbery feel and a certain stretch ratio. Thermoplastics are both crystalline and amorphous. The appearance of the crystalline plastic is translucent, opaque or opaque, and it is transparent only in the state of the film, and the hardness is soft to horny. Amorphous is generally colorless, completely transparent when no additives are added, and hardness is harder than horny rubber (additives such as plasticizers are often added at this time). Thermoset plastics are usually filled and impervious to materials, such as when they are free of fillers.
2, the density identification of food plastic barrels
Different types of food plastic drums have different densities, and the density can be used to identify plastics; however, the foamed products should be separated separately because the density of the foam is not the true density of the material.
3, heating identification of food plastic barrels
The heating characteristics of the three plastics of elastomer, thermoplastic or thermosetting plastic are also different and can be identified by heating. When the elastomer is heated, no flow occurs until the chemical decomposition temperature, and the material is decomposed and charred to the decomposition temperature. Thermoplastics soften when heated, are easy to melt, and become transparent when melted. They are often pulled out of the melt and are generally easy to heat seal. The thermosetting plastic is heated until the material is chemically decomposed, and the original hardness is not softened, the size is relatively stable, and the carbonization is performed at the decomposition temperature.
4. Solvent treatment identification of food plastic barrels
Elastomers are insoluble in solvents, but usually swell. Thermoplastics are generally insoluble in cold solvents but are prone to swelling. In hot solvents, some thermoplastics will dissolve, such as polyethylene dissolved in xylene; thermosetting plastics are insoluble in solvents and generally do not swell or only slightly swell.
How to identify the advantages and disadvantages of edible oil plastic barrels We have already told you in detail in the above, we must understand this aspect when choosing, in order to buy the right product. If you still don't know how to choose a reliable manufacturer, then don't miss the Jilian mold. We produce Pet Bottle Preform with guaranteed quality. Welcome to leave a message and inquire.