Retrofit market licence for co-injection process

Twinshot Technologies has announced the formalization of an international licensing agreement that authorizes Spirex to provide Twinshot's unique co-injection process to the retrofit market

Twinshot Technologies and Spirex Corporation have jointly announced the formalization of an international licensing agreement that authorizes Spirex to provide Twinshot's unique co-injection process to the retrofit market.

Spirex, headquartered in Youngstown, Ohio, has numerous locations throughout North America, Europe and Asia.

According to John Rhodes, Twinshot Product Manager: "Injection molders throughout the world expressed an overwhelming interest in Twinshot upon seeing the technology demonstrated at the recently completed K-Show.

It was clearly evident to both Twinshot and Spirex that processors want technology that reduces their costs.

Our system is highly effective yet a low-cost alternative to the often prohibitive cost of purchasing new co-injection equipment.

Our two companies are dedicated to making Twinshot Technologies readily available to the international molding community by way of Spirex's proven experience to provide, implement and service equipment within the plastics marketplace." "Simplicity and low cost are the distinguishing attributes of the Twinshot system as compared to other commercial co-injection systems," according to co-injection veteran Joseph McRoskey.

Because Twinshot Technology can be retrofitted to existing machines it permits the production of multi-material parts with a sandwich construction (co-injection) using a slightly modified standard injection molding machine - thereby overcoming the burdens of large capital expense and process complexity that have traditionally made co-injection prohibitive to custom molders.

Twinshot has been proven to reduce resin costs by 25% or more, dramatically cutting product material costs - the single greatest expense to custom molders.

In the words of Paul Colby, President of Spirex Corporation: "Multimaterial molding, once the exclusive realm of special custom machines, is now within reach of every molder.

The traditional high costs and steep learning curves of conventional co-injection have been eliminated by the Twinshot process." Colby points out that Spirex is ideally suited to serving the injection molding retrofit market.

"For more than 20 years," he says, "Spirex has been proving itself as a global leader in designing, testing and manufacturing components for plastic processing machinery." The relationship between Twinshot Technologies and Spirex grew from the fact that Spirex, with its history of innovation in patented plasticating screw designs, supplied the initial screw configuration for the Twinshot process.

Specifically: Twinshot employs a unique screw assembly which provides the separation of different melts during the recovery portion of the cycle.

A single conventional injection cycle drives the combined melts into the mold.

By installing a special barrel, screw, and check valve, a standard hydraulic or electric molding machine becomes an affordable, reliable co-injection machine.

Adding to the system's ease-of-use are the facts that Twinshot requires no new hydraulics, no new software, no new manifolding, and no external controls or support equipment.

Among the many benefits of Twinshot is the ability to encapsulate low-cost materials, including off-spec, regrind, or recycled material.

The system can also be used to produce soft-touch parts in a single molding operation, encapsulate foamed material to reduce sink, warp, and improve strength-to-weight ratio, and to encapsulate reinforced materials within a cosmetic surface.

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