Prominence of Injection Molding Vs Alternate Technology for Beverage Closures when Closures get Lighter in Weight

When it comes to producing closures for bottles, jars, and containers, manufacturers have two main options: injection molding and compression molding technologies. While both methods can produce high-quality closures, injection molding technology has several advantages over alternative technologies producing closures, especially given the trend of light weighted closures. ?

Dimensional accuracy is extremely crucial in the production of closures, as even small variations in dimensions can lead to leaks, poor fit, and other quality issues. Injection moulding technology is better suited for achieving precise and consistent dimensions Vs other available technologies for closure molding for below mentioned reasons:?

1. Precision and Consistency:

Injection molding technology allows for greater precision and consistency in the production process. This means that each closure produced through injection molding is more likely to have uniform dimensions, tighter tolerances, and hence uniform wall-thicknesses, resulting in a more reliable product. This is achieved by precise hot runner designed by Husky Technologies, used to ensure molten resin is distributed uniformly across the product.

In contrast, other technologies used to make closures do not melt the resin, they merely heat the resin. This is precisely why Injection Molding technology can produce the lightest closure for the very same neck finish Vs other available technologies. For e.g., Husky Technologies have lightest closures for the following: 0.7g closure for 25/22, 1.15g for 29/25 and even for CSD at 1.6g for 26/22 GME 3041 & 2.0g for 1881 Vs their respective counterparts produced via alternate closure Molding technologies.?

2. Flexibility in Design:

Injection molding technology offers greater flexibility in terms of design, which allows manufacturers to create closures with more intricate features and dimensions. One can make tethered and non-tethered closures on the same mold on an injection molding technology. This, however, is not possible on alternate technologies available. Due to Molded-in Bridges on injection molded closure, you eliminate the need of investment on slitting folding equipment saving Capex and Opex, both as the closures are ready for the capping line avoiding investment on post molding secondary operations. All this cant be saved on alternate technologies.?

3. Part Appearance:

Injection Molded Closures come with a gate point which can be easily hidden or camouflaged via logo printing or a QR code printing whereas closures made on other technologies have a distinct cloud formation due to the non-melting of resin.?This is clearly visible even if closures are colored / printed.

4. Machine Flexibility & Utilization:

Only Injection Molded Technology offers flexibility to produce two completely different closures on the same machine and downstream. For e.g.: 26/22 water @1g and 26/22 CSD closure for GME30.41 @1.6g both can be produced on the same machine and aux only by changing a cold half. Husky Technologies went a step ahead to offer ultimate flexibility to produce 26/22 GME 3040 tethered and non-tethered versions of closures only by swapping slides on the same Machine, mold and downstream.

In contrast, other technologies support mold changes but this may require extreme expertise plus at least 2-3 times the time to change mold vs Injection Molding Technology.

5. Faster Production Times:

Other Molding technologies claim to produce faster closures when reviewed per min output. However, when reviewed over an annum, Injection Molding Technology produces faster.??This is precisely due to the lower maintenance intervals vs others. This means that manufacturers can produce more closures with lesser maintenance costs and downtimes ensuring cheaper cost of ownership on injection molding technology, for the same closure Vs alternative technologies.?

6. Good Looking Product with unique Design Features:

Injection Molding Technology, not only is capable to produce precise products but also can make it extremely good looking when it comes to tethered closures. Husky Technologies have come up with premium looking tethered closure design with 180 deg shell locking and many other features, now approved by the one of the largest beverage brand in the world for their African Markets. Other technologies simply cant match up to the design and precision of those closures making it one of extremely good looking products on the segment.

7. Sustainable Manufacturing Solution:

Injection moulding technology allows for precise distribution of raw material, resulting in lower material waste and cost savings along with dimensional accuracies Vs alternative technologies.

This makes Injection Molding Technology more sustainable Vs others.

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In conclusion, when it comes to producing closures with precise and consistent dimensions or producing multiple closures on the same system, or closure with lower OPEX, injection molding technology offers several advantages over alternate molding technology. By choosing injection molding process, manufacturers can improve the quality and reliability of their closures, while also benefiting from faster production times, greater design flexibility, and lower material waste while earning the much-needed flexibility to produce multiple closures on one line. Injection Molding Technology is indeed the need of the hour knowing it is more sustainable option Vs others.

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