There are many advantages to aluminum-plastic composite covers, such as stable torque and reduced opening time; Strong tensile resistance and corrosion resistance are the reasons why aluminum-plastic composite caps are widely used as medical bottle caps and are so popular in the pharmaceutical field. It has also laid a good foundation for its future market development.
As a type of aluminum-plastic composite cover, the easy to pull aluminum-plastic composite cover is also widely used. Like ordinary aluminum-plastic composite covers, the easy to pull aluminum-plastic composite cover is composed of an aluminum cover and a plastic part. The difference is that the plastic part of the easy to pull aluminum-plastic composite cover has a pull ring. In the middle of the aluminum cover, there will be a small hole with a convex indentation that is easy to open all around. There are two bridge points located between the semicircular part of this convex indentation, and a section of the cover body has a horn shaped opening that folds towards it. The pull ring is composed of an inner circle and an outer ring, with a diameter not larger than the cover. The positioning notch on the hole is rectangular, roughly located at the opening where the indentation is easy to open; The outer ring and inner circle are connected by a pull edge and two bridge points. The convex part on the opposite side of the inner circle is a flat cylinder, and its edge positioning body is two small cylinders. The width of the pull edge relative to the pull edge should transmit sufficient tearing force. The two bridge points only exist to make the outer ring and inner circle have integrity. The positioning body at its edge is two small cylinders, roughly opposite to the pull edge. During production, the pull ring is placed on the top of the cover for positioning and matching. The flat cylinder that passes through the middle hole of the cover is fixed to the cover by forming a flipping edge through hot pressing. When in use, pull the outer ring according to the preset direction sign on the cover. At this time, the two bridge points will break, and the pulling force will go in one direction through the pulling edge and inner circle to the top and body of the cover, and then tear off the cover completely. The easy to pull aluminum-plastic combination cover can be completely torn off, making it suitable for a wide range of applications. The pulling direction of the pull ring is consistent with the tearing opening of the cover, making it more convenient and labor-saving to open the cover.