With a wide top and a narrow profile design, it is completely different from the appearance of commonly used bottles, and can catch consumers' eyes at a glance.
About mechanical properties of bottle glass
(1)Bottle and jar glass should have a certain degree of mechanical strength.
Bottle and jar glass will also be subjected to different stresses due to different conditions of use. Generally, it can be divided into internal pressure strength, thermal shock strength, mechanical impact strength, overturning strength of bottles and cans, vertical load strength and so on. However, from the perspective of causing glass bottles and cans to rupture, the direct cause is almost mechanical impact, especially caused by multiple scratches and impacts on glass bottles and cans during transportation and filling. Therefore, glass bottles and cans should be able to withstand the general internal and external stress, vibration, and impact encountered during filling, storage and transportation. The strength of bottle glass varies slightly according to inflatable bottles and non-inflated bottles, disposable bottles and recycled bottles, but it must be safe to use and not burst. Not only check the compressive strength before leaving the factory, but also take into account the problem of strength reduction in the recycling of recycled bottles. According to foreign data, after 5 times of use, the strength is reduced by 40% (only 60% of the original strength); after 10 times of use, the strength is reduced by 50%. Therefore, when designing the shape of the bottle, it is necessary to consider the strength of the glass to have a sufficient safety factor to avoid "self-explosion" and injury
(2) Factors affecting the mechanical strength of bottle glass.
The unevenly distributed residual stress in the bottle glass greatly reduces the strength. The internal stress in glass products mainly refers to thermal stress, and its existence will cause the mechanical strength of the glass products to decrease and the thermal stability to deteriorate.
Macro and micro defects in glass, such as stones, bubbles, streaks, etc., are often caused by inconsistent composition with the main glass composition, and different expansion coefficients, which cause internal stress, which leads to cracks and seriously affects the strength of glass products.