A cap may seem like a simple component.
In reality, it must meet many requirements: it must seal properly, be practical to use, protect the product, and reflect the brand’s identity.

A cap for a bottle of oil does not have the same characteristics as a closure for a cosmetic product or a cap for an industrial detergent.
The shape, opening mechanism, dispensing hole, material, safety seals, and required performance all differ.

At Viroplastic, we design and manufacture caps and closure systems for plastic bottles and containers intended for the Food & Beverage, Personal Care, and Home Care sectors.
From caps for oil and food liquids to closures for water jugs, and even flip-top and Twist Open systems: every product is created using a custom mold designed with precision in our in-house workshop.

That’s why we handle the design and construction of plastic molds in-house.
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The result?
Faster development times, greater flexibility, and a mold designed from the ground up to deliver optimal performance.

Mold Manufacturers Since 1960

Our story begins in 1960 with Silo Lorini, a company specializing in the design and manufacture of thermoplastic injection and blow molds.
Our expertise stems from this experience.
This expertise has been built through hands-on experience and has grown over time, thanks to continuous updates in technology, materials, and production processes.

Our experience in mold design allows us to assess the technical feasibility of the cap from the very beginning and identify the most suitable solutions for its production.
We understand how the material behaves during molding, which factors can affect the final quality, and which solutions can make production more efficient.

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You come up with the idea; we make it happen

Every project begins with listening.
You tell us about the cap you need for your container or the packaging you want to create, its features, and the desired aesthetic.
Our engineering department analyzes your proposal and turns it into a concrete solution.
We study the shape, functionality, dimensions, and aesthetic appeal.
We evaluate how it will be used, what performance it must deliver, and how it can be reliably manufactured.

Initial technical analysis helps us identify any potential issues right away.
This allows us to take action before the mold is built, avoiding last-minute changes and unnecessary steps. Design and production do not follow separate paths.
We consider them together from the very beginning.

Different caps for different products

Every industry has its own needs.
In the food industry , for example, we manufacture plastic caps for oil and vinegar bottles, twist-open caps for sauces and condiments such as mayonnaise and ketchup, as well as closures for water jugs.

For the cosmetics industry, we develop caps and closure systems that combine functionality and design, such as flip-top caps and twist-open closures.
Practical, customizable solutions designed to enhance brand identity.

In the Home Care sector, we manufacture closures for bottles, containers, and jugs used for detergents, household cleaning products, and technical liquids, taking into account the specific performance requirements.

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Why do we build our molds in-house?

The engineering department, the mold shop, and the production department work closely together.
Information flows directly from one department to another, and every decision is made with the end result in mind.

By handling all phases of mold design and construction in-house, we are able to maintain full control over every technical detail, reduce development time, and ensure high quality standards from the very beginning of the project.
If a modification or adjustment is needed, we can act quickly at any stage of development, without relying on external suppliers.

And the mold shop is just one part of the process: design, mold manufacturing, injection molding, assembly, and quality control all take place in-house.
From concept to finished product, the customer deals with a single point of contact and enjoys many tangible benefits: speed, control, flexibility, and efficiency.

Do you have a custom cap or packaging in mind?
Tell us about your project, and let’s work together to design the mold to bring it to life.