Some Types of Plastic Molding Process

Commonly, there are two main types of plastic molding, such as thermosets and thermoplastics. The main difference between those two types of plastics is that the thermoplastics are meltable at high temperature while thermosets will harden at high temperature.

The difference above is mainly caused by the polymers which form those two plastics. Thermoplastics have polymer which look like a chain of atom in one dimensional string. Since they are melted at high temperature, it can be reshaped. On the other hand, thermosets are formed from a polymer with three-dimensional chains so that they are able to keep their shape. There are a lot of processes which are used for shaping or molding plastic using either thermopastics or thermosets. It is also possible to use the combination of those two types.

There are a lot of types of molding process such as extrusion, injection molding, and the combination of the two processes which is known as blowing molding.

Extrusion molding process starts with raw plastics like powder, pellets, and beads. Firstly, the plastic will be fed to a revolving chamber. The chamber which is also known as the extruder will turn and melt the plastic. The melted plastic can be formed to the shape you want. Then, the finished product is dropped on the conveyer belt to be cooled with water. The next step is cutting and finishing touch. The items which are commonly made through extrusion are films, sheets, and also pipes.

Injection molding is another process of molding. The principle used for this process is typically the same as the extrusion. The raw plastic will be fed into the melting chamber through a hopper. The difference is that the melted plastic is put into cold mold with high pressure. If the mold is cool, the product will be cleaned and finished. The items which are commonly made through injection molding are bottle caps, butter containers, lawn furniture, and also toys.

Blow molding is another type of plastic molding process which uses a blowing method after the extrusion or injection molding. The melted plastic in the extrusion process uses a die to create the heated plastic tube with the cool mold around it. In the extrusion blowing, the compressed air will be blown through the tube so that it will force the plastic to make a hallow shape inside. With this method, the manufacturer does not need to attach different injection-molded parts. On the other hand, injection blowing method blows the melted mold into the final shape in different cold.

Custom Injection Molding Division

We specialize in custom injection molding of special thermoplastic, thermosetting, and composite materials. These materials can be selected to meet or exceed your specifications and enhance your products performance properties, such as appearance, durability, chemical resistance and corrosion resistance.

Key Benefits

• Cost reduction, cost effectiveness
• Weight reduction
• Metal replacement
• Molded in color

Capabilities

• Both high volume and short run production
• Skilled in machined and molded prototypes
• Specialized in metal replacement in hydraulic and pneumatic valves such as poppets and spools.
• We have extensive experience in EMI and RFI shielding.

Areas of Service

• Hydraulic/pneumatic
• Telecommunications
• Plumbing
• Recreation
• Agriculture
• Automotive

Torlon Screws

These torlon screws can be made as pan or flathead type.

Key Benefits

• Benefit 1: High temperature service, up to 500 degrees F
• Benefit 2: Corrosion resistance
• Benefit 3: Chemical resistance
• Benefit 4: No thermal deformation of threads until extreme elevation in temperature
• Benefit 5: High voltage standoff applications
• Benefit 6: Excellent creep resistance
• Benefit 7: High mechanical strength
• Benefit 8: Flame retardant
• Benefit 9: Ultra-violet stability
• Benefit 10: Cost reduction due to molding part rather then machining individual parts
• Benefit 11: Torlon is half the weight of Aluminum
• Benefit 12: Aztec has Approved Vendor Status from Solvay Advanced Polymers for molding and machining Torlon (polyamide-imide). Technical info for torlon can be found here

A few possible uses for Aztec Screws is : High Voltage Isolation, Thermal Isolation, High and Low voltage inverter parts, and rectifiers.

Types Of Plastic Molding

There are multiple different types of plastic molding that any particular plastics manufacturer can do as a service to business experts and individuals alike. Each various kind requires a various procedure and has its different utilizes, which are all extremely productive and effective to make. They include plastic welding, in-mold labels and insert, or over-molding plastic molding. It’s important to differentiate between the major kinds so that you are able to make the proper option with regards to the plastic molding you need, either as an individual consumer or a big business seeking to begin manufacturing with plastic.

Plastic Welding

The form of plastic molding referred to as plastic welding is extremely similar to metal or steel welding, only plastic welding seals and molds two pieces of plastic together instead of some metal material. Plastic welding is a remarkably typical procedure in commercial materials like children’s toys, parts for the interior or passenger areas of an automobile, and plastic lawn furniture. In most cases plastic welding is used exactly where screws or other metal pieces would either be unattractive, unsafe or difficult to place, making plastic welding a really useful form of plastic molding.

In-Mold Labels

Any plastic materials you have observed that look as if the label is component of the plastic might extremely well have been made as an in-mold label by the manufacturer. In-mold labeling will be the process by which a label is created inside a mold and melted plastic is injected into the mold more than the label, sealing about it. Many storage containers, food packaging and restaurant supplies are made with in-mold labeling. This is handy for numerous producers because it eliminates the step for labeling in the creation process and saves money in many instances because of this reality. This increases the profits for the business and in turn makes in-mold labels much more popular.

Plastic Molds

Plastic molds are important industrial products in order to shape and mold plastic before it results to a more viable and feasible product in the market. It commonly undergoes injection molding in various forms but the most popular technique is forcing a plastic liquid into a metal one. The molding is made through the use of molten plastic that cools while it is inside the mold.

Plastic molds are used in order to lessen down the costs related to various manufacturing processes. This technology is favored because of the quick turnaround time in the procedure. A variation known as reaction injection molding is also used for fiberglass, epoxy and polymer plastic. Here are ideas on the services, processes and equipment design employed in the manufacture of these products. Plastic molding services result from rotational molding, blow molding, thermoforming and compression molding. These services have characteristics that make them distinct from one another.

Machining, for instance is that phase where the molds are removed through drilling, milling or turning. Micro-molding is known to use special and mini molding machines in order to produce small parts out of the process. The parts produced out of these services are commonly less than two grams in weight. In a two-shot injection, a plastic product is produced from two sets of raw materials through the use of only one operation.

About Aztec

Aztec Plastic Company is a third generation company, and one of Chicago’s “Top Performers” in custom injection molding of all types of thermoplastic materials. Specializing in metal replacement with structural composite and engineering resins. With this extensive knowledge of materials, we can be of service to you from initial part design, to final production.

We are a custom molder and multi-divisional organization serving commercial and high tech niche markets within the United States and abroad. We service a wide variety of commercial clients. The company began in 1970 as a custom, injection molding company, and has since diversified into multiple divisions, as seen on the Divisions page.

Let us help you select a material that is perfectly suited to your application. All of our molding expertise can be backed up by the technical centers of some of the largest plastic resin producers in the world and together we can solve your toughest challenges, and design your part to meet your performance criteria.

Our machines range from 75 to 250 to capacity, 1/2 to 20 ounce. All are of the latest screw design, with auxiliary equipment such as dehumidifying hopper dryers with microprocessor controls, conveyors, sweepers, automatic hopper loaders, mold heaters, and chillers, all to assure the best possible processing of all materials. Aztec is skilled in machined and molded prototypes, and both high volume and short run production.

Aztec Plastic Company

Aztec Plastic Company is a full service plastic injection molding company that seeks to become an integral part of our customer’s team, helping in all stages of product development, from design to production. In addition we strive to be one of the leading custom molders of thermoplastic materials, giving our customers the highest standards of quality and service in the most cost effective way.

We work with Torlon Material screws to provide you with the best materials for the job at hand. We can show your company multiple ways of creating customized solutions, using torlon screws for your company’s needs. Let us show you how we can implement torlon screws in your company.

We specialize in custom injection molding of special thermoplastic, thermosetting, and composite materials. These materials can be selected to meet or exceed your specifications and enhance your products performance properties, such as appearance, durability, chemical resistance and corrosion resistance.

In Addition, Aztec is skilled in machined and molded prototypes, and both high volume and short run production. With Aztec Plastic Company, your solution is just around the corner.