Are the vents on the nipple facing up or down.baby nipple bottle

　　At present, many newly bought pacifiers on the market need to be pierced. This kind of air hole is used for exhaust, so it is also called a vent hole. In fact, it doesn't matter if the blowhole is facing up or down. Because the pressure inside and outside the bottle is balanced under the initial conditions (the easiest way is to screw on the cap after you have adjusted the milk. Turn the bottle upside down for a while, the water flowing out of the nipple will become less and less until it stops, which It means that its internal and external pressures are balanced.) When the baby is drinking milk, the milk from the bottle flows out, and the pressure in the bottle will automatically decrease at this time. At this time, due to the influence of atmospheric pressure, the air will naturally enter from the vent hole. , to supplement this part of the pressure difference, so that the baby can drink milk normally. So either way is possible.

　　The function of the vent hole: to ensure the smooth discharge of air, reduce the air inhalation by the baby, avoid the baby's hiccups, abdominal pain or spitting up, and reduce the collapse of the pacifier and the phenomenon of sucking.

　　Before use, check whether the air intake hole has been opened. If it is not open, use a through-hole needle to open it. Pay attention not to open it too much or too small. If it is too large, it will easily overflow milk. Do not use other things to open, it is unhealthy and it is not good to grasp the size of the opening.

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