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Pharmaceutical aluminum-plastic composite covers are mainly used in medical, chemical packaging and other industries. Different industries have different requirements for medical aluminum-plastic composite covers. In order to let everyone know more about medical aluminum-plastic composite covers, let us come together today. Take a look at how to judge the quality of the medicinal aluminum-plastic composite cover by its appearance.
Aluminium Flip off Seal
1. Check the riveting point. The size of the riveting point should be the same, the surface should be smooth, the thickness should be uniform, there is no burr around, and the color should be the same as the color of the plastic cover itself. The diameter of the riveting point should be 1-1.5mm larger than the diameter of the riveting hole of the aluminum cover. The flanging type medicinal aluminum-plastic composite cover has a flanging length of 1-1.5mm). The automatic molding machine of the medical aluminum-plastic composite cover for competition can meet the above requirements. However, manual riveting will cause the surface to be uneven and the periphery is not round. , There are phenomena such as wire drawing, burrs, etc., especially with manual electric heating tools for riveting, the temperature cannot be controlled, resulting in uneven heating of the riveting material, changing color, and even scorching spots.
2. Check the gap. Check the gap between the plastic cap and the aluminum cap. The bottle cap riveted by mechanical equipment is formed by heating while pressing. The plastic cap and the aluminum cap are tightly attached together without a gap. And manual riveting There is no pressure to close, resulting in a large gap between the aluminum cover and the plastic cover, which can be shaken up and down.
3. Check whether the aluminum cover is deformed, whether the edge of the aluminum cover is neat, whether the height of the aluminum cover meets the packaging requirements, and the surface oxidation treatment (or coating treatment), etc. The roundness of the aluminum cover directly affects the normal operation of the capping machine. Aluminum The matching gap between the inner diameter of the cap and the outer diameter of the bottle mouth should not be too large, otherwise there will be wrinkles when sealing.
4. Check the tear point of the aluminum cover after the medicinal aluminum-plastic combination cover is opened. Whether it is flat. Check whether the breakpoint burr is too large after the break-point medicinal aluminum-plastic combination cover is opened, and there should be no scratching feeling. Check the nicked medicine after the aluminum-plastic composite cover is opened, whether there are burrs or unbroken parts, the nicks should not be turned up, and there is no scratching feeling.
5. Check the strength of the aluminum cover In addition to the aluminum alloy material must be used for the aluminum cover, the thickness of the aluminum material is also an important reason that directly affects the strength of the aluminum cover. The thickness of the aluminum cover material changes with the outer diameter. The general diameter is 13-20mm For aluminum cover, the thickness of aluminum material is selected in the range of 0.18-0.2lmm; for aluminum cover of 28-33mm, the thickness of aluminum material is selected in the range of 0.23-0.25mm.
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