How to Perform Testing of Glass and PET bottles?

Bottle packings are popular in every industry, from carrying liquids to powder and solids. They are fit to contain every form of product. Plastic and glass are two materials by far which are perfectly keeping the contents safe. You must have also seen metal bottles, like deodorant, insect killer spray, cleaning agents, etc. Metal jugs are fit for conveying chemicals, however they are inclined to consumption. This is the reason metal jugs are from time to time utilized generally. Likewise, they contribute a considerable measure in expanding the cost of the item. Glass and plastic being practical is favored decision.

Testing of PET bottles:-

A decent jug ought to have great adjusting and security, reliable divider thickness, no air bubbles or different distortions. To check every one of these parameters there is an extensive variety of testing instruments. Be that as it may, before all that, we have to check the preforms for consummate shape. Preforms are blown formed to make full estimated bottles. At some point, these preforms have abandons which additionally get go to conclusive item i.e. bottle. These imperfections may prompt item disappointment. To keep away from that, polariscope is utilized. It's an optical gadget with two polaroid focal points and an episode light. The

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enables the light to pass totally with no reflection or refraction. On the off chance that there is any imperfection, the light would get refract doubly and make birefringence impact of light.

The preforms are tested at two angles, 45° and 90°.

Just imperfection free preforms are further blow shaped into bottles. A progression of tests is performed on these containers. This aides in surveying the working conduct of the jugs in genuine conditions.

Testing of Glass bottles:-

Some of the testing procedures are as same as Pet bottle testing. However, glass bottles don’t undergo bursting tests etc. If the quality manager wants to do the same, there are specially designed machines with closed cavities, to avoid any mishap when bottle bursts.

Mineral Water bottle preform are again check for any defects and air bubbles using polariscope strain viewer. In glass bottles also, it works with the same principle. But the strain viewer for glass has special features to analyse strain on glass.

Apart from strain, the bottles are tested for their balancing and wall thickness. All thickness gauges, like Magna Mike 8600 allows the operator to check the thickness without cutting the bottle into sections. The balancing property of the bottle can be analysed by checking the depth of the base with respect to height of the bottle. Base clearance tester accurate measures the depth of the base and circumference.