Differences in the design of oral liquid bottle caps for glass bottles and plastic bottles

In the packaging design of oral liquids, the selection of medicinal bottle caps is crucial. Especially for oral liquid screw caps with child protection function, there are certain differences in the internal design between glass bottles and plastic bottles.

28mm child resistant cap for liquid

Background and risks of oral liquids

As a pharmaceutical preparation with good taste, oral liquids are extracted from Chinese herbal decoctions, and additives such as flavoring agents and antibacterial agents are added, and are sealed in bottles in a sterile or semi-sterile form. However, because of its taste close to that of beverages, it is easy for children to mistake it for ordinary drinks, and there is a risk of accidental ingestion. The physiological characteristics of children determine that they have low tolerance for drugs, and excessive consumption may bring serious consequences and even endanger life.

60ml HDPE dry syrup bottle

Design of water-based screw caps

In order to reduce the risk of accidental ingestion of oral liquids, water-based screw caps with child protection function are often used. This cap adopts an inner and outer double-layer structure design, and the inner and outer caps are connected by a card slot. When opening the cap, it is necessary to press down the outer cap and rotate it at the same time to drive the inner cap to rotate together and complete the opening action. This design can effectively prevent children from opening the package at will in a short time, reducing the risk of accidental ingestion.

Differences between glass bottles and plastic bottles

Although the water-based screw-on caps are used in both glass bottles and plastic bottles, there are certain differences in their internal designs. It is mainly reflected in the gasket inside the cap. The gasket of the glass bottle cap is relatively thicker, while that of the plastic bottle is relatively thinner. This difference is mainly determined by the different materials of the bottles. Glass bottles are relatively more brittle, and the increase in the thickness of the gasket can enhance its performance in sealing and pressure resistance, ensuring that the liquid is not easy to leak. Since the material of plastic bottles is relatively soft, the gasket of the cap can be relatively thin, which can ensure the sealing and reduce the production cost at the same time.

The design difference between the oral liquid bottle caps in glass bottles and plastic bottles is mainly reflected in the thickness of the gasket, which is determined according to the material of the bottle body and aims to ensure the good sealing of the bottle. Through reasonable design and selection, the water-based screw-on cap can effectively reduce the risk of accidental ingestion of oral liquid and ensure the safety of children's medication.