Interface of non-polyvinyl chloride (PVC) infusion bag

Abstract

The invention relates to an interface of a non-polyvinyl chloride (PVC) infusion bag, belonging to the field of large infusion consumables, which is characterized in that the upper port of the connecting pipe of the infusion bag is higher than the upper end surface of a rubber stopper and is bent towards the inner side under the action of ultrasonic waves; the upper port of the bent connecting pipe is downwards, and the inner diameter of the bent connecting pipe is less than the outer diameter of the rubber stopper so as to clamp the rubber stopper; the axial distance between the upper port of the bent connecting pipe and the supporting footstep on the lower end surface of the rubber stopper in the connecting pipe is less than the thickness of the rubber stopper so that the bent port can be embedded into the upper surface of the rubber stopper and the outer diameter of the rubber stopper is extruded to be enlarged so as to play a pole in double seal; a fungus-proof cover is a plastic thin film welded on the pipe orifice of the connecting pipe; at least a part of the welded thin film type fungus-proof cover is extruded out of the outer diameter of the pipe orifice to form a fin; the fin is convenient to be hold the force when being torn; the integral thin film type fungus-proof cover is torn to add medicines or infuse the fluids when in use; the fungus-proof cover can be also an injection moulding plastic cover which can be welded or buckled on the pipe orifice of the connecting pipe; and when in use, the tear-off mouth is undrawn (or broken off) or the integral fungus-proof cover is opened so as to add the medicines or infuse the fluids.

Description

Technical field [0001] The invention relates to a hard spout interface for a soft liquid bag, in particular to an interface for a non-PVC infusion bag. Background technique [0002] At present, known non-PVC infusion bag interface mainly has two kinds of forms, and one is to pre-seal the rubber stopper in the anti-bacteria cap with easy-to-pull (or easy-fold) unsealed opening, and then this anti-bacteria cap is welded on On the connecting nozzle, this type of interface mainly has problems such as low welding efficiency, unstable quality, and cracking at the easy-to-pull (or easy-to-break) part during the welding process; another form is to pre-install the connecting pipe, rubber plug and The anti-bacteria cover of the easy-to-pull (or easy-to-fold) unsealed port is welded into a component, and then the interface component is welded or glued to the hose on the soft bag. This type of interface mainly exists between the interface component and the soft bag. The hose bonding pr...

AI Technical Summary

Problems solved by technology

[0002] At present, known non-PVC infusion bag interface mainly has two kinds of forms, and one is to pre-seal the rubber stopper in the anti-bacteria cap with easy-to-pull (or easy-fold) unsealed opening, and then this anti-bacteria cap is welded on On the connecting nozzle, this type of interface mainly has problems such as low welding efficiency, unstable quality, and cracking at the easy-to-pull (or easy-to-break) part during the welding process; another form is to pre-install the connecting pipe, rubber plug and The anti-bacteria cover of the easy-to-pull (or easy-to-fold) unsealed port is welded into a component, and then the interface component is welded or glued to the hose on the soft bag. This type of interface mainly exists between the interface component and the soft bag. The hose bonding process is difficult and the production efficiency is low.

In addition, the above two forms of non-PVC infusion bag interface need to increase the pre-assembly process, which is not conducive to improving work efficiency and ensuring product qualification rate

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