In terms of materials， there are many materials for the production of milk covers， and the covers required for each kind of dairy products are different. We must choose the appropriate materials for production according to our own products. Also， remember to choose high security Never choose to return materials for production
In the injection molding process， the rotating equipment system in the mold can effectively maintain the integrity of the cap screw. Therefore， the screw thread shape of the bottle cap can be effectively manipulated， and the bottle cap wall will not be skewed when the screw thread of the upper bottle shank is rotated.
When we go to the supermarket to buy Edible oil， because the oil is very heavy， we need to use the salad oil bottle cap as a handle. We found that salad oil bottle caps are made of plastic. Because such materials have their own characteristics， they can well meet people，s use habits when used
The threads on the plastic bottle cap can be divided into internal threads and external threads. Generally speaking， the internal threads are formed with a thread core， and the external threads are formed with an internal thread ring. Because of the particularity of the thread， the die structure of the thread part is also different， and the way of getting out of the thread is also different. Next， plastic bottle cap manufacturers will share the thread forming method of plastic bottle cap. Don，t miss the following wonderful explanation!
