At Leech Industries, we offer capabilities to produce either thermoset or thermoplastic parts ranging from high mix/low volume to low mix/high volume parts. We pride ourselves on having the capability to handle repetitive work, ranging from tens of thousands to millions of parts annually. We’re committed to reducing lead times and turning around projects efficiently, all while providing a seamless experience for OEMs eager to switch from an overseas thermoset molding vendor to a US-based partner.

Our customers view Leech as their go-to partner, whether they need diversification in supply or they’re seeking a reliable shop to help them kick off a new project. At Leech, we take on complex challenges and respond strategically thanks to our diverse range of in-house capabilities.

Acrylic becomes liquid at 160 degrees Celsius, allowing the material to be easily injection molded. Like other thermoplastics, acrylic can be heated to the melting point, cooled, and reheated without significant degradation in the material.

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Heating the compression or injection molded part then creates a chemical reaction that permanently sets its shape. (This distinguishes thermoset plastics from thermoplastics, which can be melted and re-molded.)

At Leech, we offer a range of plastic molding capabilities due to our highly capable technicians and cutting-edge contract manufacturing facilities. Because we have in-house design, tool making and a complete suite of plastic molding capabilities, we are aligned to provide one-stop production manufacturing services.

Consider Leech Industries for your thermoset molding solutions. Contact us for a reliable, comprehensive approach to your unique needs.

PMMA lens are widely used in a multitude of industries and applications when light transmittance, as opposed to diffusion, is a performance mandate. The properties of the material make it popular for:

Not all plastics are acrylic, although all acrylic materials are classified as plastic. In injection molding, this translates to acrylic as a better choice than other plastics because acrylic plastic maintains its 94% light transmittance per inch without hazing or yellowing. It is also lightweight and cost-effective. These properties make acrylics a popular choice for lighting and medical equipment. Interested in using this material for your project? Request a quote to get pricing.

Following the curing process, we cool the material to solidify the thermoset plastic prior to ejecting the finished part. From there, we can perform any secondary operations such as machining, assembly, finishing and quality control before sending the thermoset components to our customer.

Whether you need to transfer an existing mold set or design and build a new mold, allow us to demonstrate our thermoset molding capabilities at Leech and highlight how you can benefit from our one-stop contract manufacturing services.

Thermoset plastic molding creates intricate, durable, heat-resistant parts from thermosetting plastic materials, which are typically processed using compression or injection molding techniques.

If your application requires light transmittance, strength and economy, our customized acrylic plastic injection molding can deliver the long-lasting results you need.

We provide high-quality contract manufacturing services to OEMs looking to reshore to the United States their thermoset-based part needs. Our investments in specialized thermoset molding equipment make us an excellent partner for customers seeking a reliable, sophisticated and timely supplier. What sets us apart from our offshore competitors?

Our expertise in designing, building and repairing molds sets us apart from most other plastic molders and reduces the time to bring new products into production. Because we handle mold design, building and maintenance in-house, we have:

Acrylic plastic represents a family of petroleum-based thermoplastics made from the derivation of natural gas. Sometimes referred to as "polyacrylate," acrylic can be made from Methyl Methacrylate,  Poly Methyl Methacrylate “PMMA”, or a combination of both. It is similar to polycarbonate in composition and often used when an application does not require the impact strength of polycarbonate. For example, headlights use polycarbonate for better impact resistance while taillights utilize acrylic (PMMA) plastic because of its light transmittance capabilities.

Transparent in its natural state, the variety of acrylic polymer grades available for use during the injection acrylic molding processes can achieve most any finish that your product requires. Specialized additives inserted during the injection process allow acrylic to become heat resistant and more impact resistant. In addition, acrylic plastic price falls at the midpoint of the pricing spectrum for injection materials and offers: