How does the sauce stay away from the bottle?

Many families have non stick pots, right? Due to a special coating on the inner surface of the pot, such as Teflon, it does not stick to the bottom of the pot when cooking, which indeed improves our quality of life. But in daily life, we often encounter a similar problem, which is that when you pour a sauce bottle out, it often cannot be poured out, especially when there is not much sauce left inside, there will always be some residue on the inner wall of the bottle, which cannot be poured clean. So, is there any way to solve it? have This is the new type of container coating.
In order to form a coating on the inner wall of the container that is easy to slip off, a layer of solid material like a sponge filled with small holes should be sprayed on the inner surface of the container first, and then a special liquid coating should be sprayed. This liquid coating tightly adheres to the layer of material with small pores through capillary force, so only the edible sauce will be poured out.
The flow rate of edible sauce inside the container varies with the use of different liquid coatings. Therefore, customers can customize the desired coating based on the specific characteristics of the sauce to be canned. In addition, this coating has several advantages: firstly, it is non-toxic. Because the coating is extracted from natural foods, such as vegetable oils, even if eaten, it will not harm the body; Secondly, the equipment used in the spraying process is similar to the equipment currently used in the food industry to spray coatings on aluminum cans or bottles, and does not require large-scale modification; Thirdly, the coating is easy to clean and does not affect future container recycling; The fourth is that the cost of this coating is very low, covering the inner surface of a container weighing approximately 340 grams, and the cost is less than 1 cent.