Three-in-one self-expanding vent film sealing drop bottle structure

Abstract

A three-in-one self-expanding vent film sealing drop bottle structure, mainly including a drop bottle, a press button and a three-in-one vent film, wherein the three-in-one vent film is composed of a polytetrafluoroethylene film, a fiber breathable support film and The three-in-one exhaust film is placed on the vent hole of the dropper bottle in the order of the outermost elastic cushion film with vent holes, and the middle The first layer of fiber breathable support film and the innermost polytetrafluoroethylene film, press the button to press the three-in-one venting film on the vent hole of the drop bottle at the same time, after pressing, the three-in-one venting film The continuous elastic expansion of the mesoporous elastic cushion film reinforces the concave area in the fiber breathable support film, and finally presses the polytetrafluoroethylene film evenly, which overcomes the production process on the vent hole of the drop bottle Leakage caused by defective deformation ensures a durable and reliable seal while ensuring the exhaust function.

Description

technical field [0001] The invention relates to a three-in-one self-expanding and venting membrane sealing dropping bottle structure, which can realize reliable and long-term sealing effect. In particular, it relates to a three-in-one self-expanding and venting film structure, which can overcome defective deformation of plastic parts during injection molding or gap changes caused by material aging during long-term storage. The cushion film with an elastic layer has long-term elasticity Performance, make up for gap changes caused by structural changes at any time, and always maintain the filling and sealing of the gap space. technical background [0002] The use of venting membranes in infusion sets has been developed in the last 5 years. Because the precision filter membranes cannot pass through gas, gas accumulation and pipeline blockage are caused. Therefore, it is necessary to use venting membranes to discharge excess gas and keep the pipelines unblocked. The use of the ...

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Problems solved by technology

[0008] In order to solve the above-mentioned defects in the prior art, the present invention provides a three-in-one self-expanding venting film sealing drop bottle structure after verification of a large number of new structure experiments, mainly including a drop bottle, a press buckle and a three-in-one venting Membrane, wherein the three-in-one exhaust membrane is composed of polytetrafluoroethylene membrane, fiber breathable support membrane and mesoporous elastic cushion membrane. From the outside to the inside, they are the outermost middle-porous elastic cushion film with vent holes, the middle layer of fiber breathable support film and the innermost layer of polytetrafluoroethylene film. The air film is pressed on the vent hole of the drop bottle. After pressing, the hollow area in the fiber breathable support film is reinforced by the continuous elastic expansion of the mesopore-shaped elastic cushion film in the three-in-one vent film, and finally the The PTFE film is evenly pressed together, which overcomes the leakage caused by the defective deformation of the production process on the vent hole of the drop bottle, and ensures the vent function while achieving a durable and reliable seal

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