How are plastic water cups produced?

Hello everyone, "Dong Dong Talks About Cups" is here. Yesterday, the editor shared how double-layer stainless steel thermos cups are produced. Interested friends can look at the editor's article yesterday. http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlSince the editor has been busy recently, it will affect the time for writing, especially the creative content. Today, the editor will share with you how plastic water cups are produced. I hope that interested friends will like it.

The production of plastic water cups is generally much simpler than that of stainless steel thermos cups in terms of the number of processes. http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlThere are fewer processes and the production process is relatively simpler. Next, I will share with you in a simple and straightforward way and then explain in detail for several points.

There are many kinds of raw materials for producing plastic water cups, but no matter what kind of raw materials, they must be food grade. In the previous article, the editor has explained the types of plastic raw materials many times, so I will not explain them one by one here. http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlThese plastic material raw materials are usually transparent granules, and there are also translucent and solid color granules. Transparent granule raw materials are more commonly used.

Plastic water cups are currently produced by injection molding or bottle blowing according to the product structure. Injection molding and bottle blowing are just different production methods, and they do not produce plastic water cups of different quality. Especially for the bottle blowing process, the capacity, shape, and structure of the plastic water cup body will also have production differences. http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlPlastic water cups with relatively simple designs usually use the injection blowing process. The corresponding production equipment can be divided into one-step equipment and two-step equipment. Many plastic water cups can be produced not only by the two-step method but also by the one-step method. Some water cups are more suitable for the two-step method.

There are also some plastic water cups with larger capacity and more complex shapes that use the injection, stretch and blow molding process. http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlThe difference from the previous one is that due to the complex shape and larger capacity, if only the injection and blowing method is used, it will cause uneven material in some parts of the cup body or the product shape cannot be achieved. Therefore, adding the stretching step can make the shape fuller and the material more evenly distributed.

The quality of plastic water cups is mainly determined by whether there are impurities in the cup body, whether the overall cup body has deformation or shrinkage, and especially by whether there are obvious wavy patterns on the cup body material when viewed through light.

The editor has also summarized some of the issues that everyone is concerned about regarding plastic water cups:

1. Do new plastic water cups have a smell? Yes, no matter what material the plastic water cup is made of, http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlit will have some smell, but if the material is exquisite, the production management is standardized, and the quality requirements of the plastic water cup are strict, the smell will usually be removed quickly after washing or opening the lid to diffuse.

2. Are food-grade plastic materials safe and healthy? No, some food-grade plastic materials contain BPA and some do not. Therefore, plastic cups made of plastic materials containing BPA are more suitable for drinking cold water or room temperature water. http://www.zhanyict.com/en/ProductsDetail-VB-10332.htmlBPA will be released when exposed to high temperatures. Plastic cups made of plastic materials without BPA can be used to hold hot water.