< Topic > The non dripping flow controlling element because it is the nursing bottle and the like which makes the flow of the milk and the like automatically in the necessary intake quantity of the infant who to growth way conform is offered.Solutions The liquid passage (56) the membrane of almost flat is kept in the tubular wall and the wall which are demarcated condition (55) with it includes, in order outside by the aforementioned membrane to obstruct the flow of the liquid by way of the liquid passage to the territory, for example the flow controlling element which is formed (, the nipple or for sucking/absorbing drinking glass for the nursing bottle it flows and the control valve) offers. In order the plural almost circular pin holes which are arranged into two dimensional pattern condition (58,59), namely under usual atmospheric pressure condition to prevent the flow of the liquid, you close in that membrane and remain in state, for example when pressure difference has caught (when the sucking by the infant) with in order to be able to flow the liquid which leads the above-mentioned membrane, the plural pin holes which are opened (58,59) you form. Rigidity of the above-mentioned wall the above-mentioned membrane (formation) is larger than that with the material whose elasticity is large relatively. It forms the pin hole of the size which differs mutually, making use of the pin of the size which differs mutually responding to the pressure difference which differs mutually, try to be able to flow the flow which differs mutually. It forms the above-mentioned pin hole when the above-mentioned membrane is stretched on radial.【課題】 成長途上にある乳幼児の所要摂取量に牛乳等の流量を自動的に適合させる哺乳瓶等のための「無滴下」流量制御素子を提供する。【解決手段】 液体流路(56)を画定する管状壁部と、その壁部で保持したほぼ平板状の膜(55)とを含み、前記膜による外部領域への液体流路経由の液体の流れを妨げるように構成した流れ制御素子(例えば、哺乳瓶用乳首または吸飲みコップ用流れ制御弁)を提供する。その膜には、二次元パターン状に配列した複数のほぼ円形のピンホール(58,59)、すなわち通常の大気圧条件の下では液体の流れを防ぐように閉じ状態に留まり、圧力差のかかった状態(例えば乳幼児による吸込み時)では上記膜を通じた液体の流れができるように開く複数のピンホール(58,59)を形成する。上記壁部の剛性は上記膜
