Ami Plastics

Do you need fabrication ,assembly or complete contract manufacturing? We will help with all these areas. In addition to our molding facility, we offer complete CNC fabrication of plastic and metal parts using large machining centers.

Perhaps you need ultrasonic welding, simple or complex adhesives to bond various materials? We have expertise in this area and will gladly assist as needed.

Why purchase machined parts from one source, molded parts from another, assembly from another when you can single source all of the above services

Compression molded plastics offer greater flexibility when prototyping of new designs does not warrant the extra expense of a new mold. Our engineers can show you how plastics can be more cost effective and outperform many of the metal parts you are using today.

Custom and proprietary modular injection and compression molded plastics for the automotive and electrical appliances industries. The propeller should be made of injection-molded engineer-grade thermal plastic that is durable, resilient to impact and resists bending, as opposed to soft compression-molded plastics which can fold back at higher flow rates, affecting the accuracy of the meter.

The three compression molding factors -- pressure, temperature and time the mold is closed -- vary with the design of the finished article and the material being molded. Transfer molding is most generally used for thermosetting plastics. This method is like compression molding in that the plastic is cured into an infusible state in a mold under heat and pressure.

Materials for compression molding include phenolics, melamine, urea-formaldehyde, epoxies, urethanes, and elastomers. Typical TS plastic moldings include electric plugs, sockets, and housings; pot handles, and dinnerware plates. Advantages noted for compression molding in these applications include: molds that are simpler, less expensive, and require low maintenance; less scrap; and low residual stresses in the molded parts (thus favoring this process for flat thin parts such as phonograph records). A typical disadvantage is longer cycle times and therefore lower production rates than injection molding.

When a specific design requires combining multiple materials into one finished part, the cost-effective process known as insert molding may be the solution you need.

With Insert molding, a plastic part is formed or molded directly over or around metal or plastic components, resulting in a single piece assembly. A typical example is a plastic handle molded over a metal screwdriver shaft. This value-added molding operation eliminates the need for a costly additional assembly process.

The process was originally developed to place threaded inserts in molded parts, and to form the plug around the prongs on the ends of electrical cords. It was found that molding directly over the metal parts saves time and money by eliminating an assembly step. Today, there are few design limitations or restrictions on material combinations.

A variety of inserts can be molded into a product during processing, they include tubes, frames, stamped components, machine fasteners and castings. The insert is completely encapsulated by the molded material and will maintain the integrity of a hollow product.

Plastics machining is a specialized area of expertise that AMI PLASTICS has developed. Plastics machining requires a different approach than metals machining because of the unique work-holding and tooling required to hold tolerances and surface finishes.

If your plans are to prototype we can offer assistance with CNC machined models in the plastic of choice, custom low cost premolds that deliver a molded sample in requested polymer, and of course production molds of single cavity, multi cavity and family cavities of different parts. We design and build many mold in house and outsource some depending upon specifics of each part. We always insist on very high quality from internal group and from our outside partners. Has any company ever built a mold at no charge to you? We have on occasion.

By the insertion within the moulding process of metal inserts of specialist metals (Brass and Gunmetal etc) a post moulding assembly is dispensed with. Additional benefits are a strong key to the base plastic.

Our molding machines vary in size from 55 ton to 300 ton . We specialize in tight tolerance parts requiring very precise quality control measures to general plastic parts that need to be molded at a very low price. Flexibility is what helps us to grow and to deliver high quality parts time after time. From single custom parts to high cavitation to overmolding we can help. Please call or email for very fast quoting at great prices. All things being equal we know that you want great prices and great quality. We deliver both.

Where a higher strength than the base plastic material is required a metal screw in type insert is used. Often the application of this type of insert permits a metal screw / bolt to be repeatedly unscrewed.

This is a term used where larger pieces of press tooled metal plates are used as an insert within an injection-moulding tool. By a series of both runner forms and hot tip feed devices, plastic materials are fed to multiples of plastic over-mouldings or "inserts" which are mechanically bound to the press tooled metal plate.

Where a component assembly calls for plastic mouldings of differing properties of plastics, or where it would be uneconomic to complicate the moulding tool, a separate injection moulding is used as an insert.

Most inserts are made from metals, usually brass, which is a harder and more durable material than most plastics. In threaded inserts, the higher tensile strength of metal is the main reason for the specification of an insert.