Plastic bottle caps are something we often see in our daily life. Mineral water bottle caps are made of plastic, edible oil bottle caps are also made of plastic, and many liquid bottle caps are also made of plastic. Caps have good performance. The sealing performance is good, which can effectively prevent the liquid in the bottle from being polluted by the outside world. According to the different uses of plastic bottle caps, the performance of plastic bottle caps is also different. The following is a detailed introduction for everyone, let’s take a look!
For those plastic bottle caps that need to be airtight, this part of the top inner wall must have an annular airtight ring, while for airtight plastic bottle caps, there is often no annular airtight ring. The lower end of the plastic cover is connected with the anti-theft ring through reinforcing ribs, and several leaf-shaped rotating tension wings are evenly distributed on the inner wall of the anti-theft ring.
In general, the corners of the workpiece should be made into rounded corners or arc transitions as much as possible. The fillet has the following characteristics: it is easy to generate stress concentration at the corner of the part, and cracks will occur when it is stressed, impacted or impacted.
It looks more like polycarbonate, a widely used engineering plastic. If the structure is not correct, it will generate a lot of internal stress, and it will definitely be prone to stress cracking.
When the fillet is made on the workpiece, the corresponding part of the mold is also made into a fillet, which increases the strength of the mold. The mold will not crack due to stress concentration during quenching or use, which increases the strength of the mold.
Color fastness to light directly affects the fading of products and the glare of outdoor products. The light level requirements of the (fast) dyes used are an important consideration. If light levels are low, the product used will fade quickly. This is why anti-reflective panels such as road water barriers will become lighter after a few years of sunlight, but generally a certain amount of anti-ultraviolet ingredients will be added during blow molding to ensure durability. products and save color grading time. The thermal stability of the pigment refers to the heat loss, discoloration and discoloration degree of the pigment at the processing temperature. Inorganic pigments are composed of metal oxides and salts, and have good thermal stability and heat resistance. Pigments of organic compounds change and decompose at temperature.
The plastic barrel cover designed in this way has the characteristics of reliable sealing, good sealing performance, anti-theft, safe and convenient use, etc. It can effectively prevent the liquid in the container from being polluted by the outside world, and ensure that the packaging of various liquid products meets the national safety standards.
Post time: Sep-19-2023