2K OverMolding is also call Rotary mold double-material injection molding technology is an efficient plastic molding technology. It can use two different plastic materials for molding at the same time. By rotating the mold, the product can be molded synchronously in the same cycle under the condition of different materials.

Commonly known as acrylic plastic, PMMA is not highly chemically resistant nor especially resistant to cracking. However, its brittleness is not a factor in its most common applications. Transparent and glass-like, acrylic appears in many applications, including in sports equipment, commercial food displays and lighted signs.

What are the types of plastic used in injection molding? Understanding these options is a critical first step towards successful production planning. Learn about 11 of the most popular molding materials that comes from the three key types of plastic — crystalline, semi-crystalline and amorphous thermoplastics — and why manufacturers choose them.

Compared with traditional single-material injection molding, this technology can manufacture more complex and higher-precision products while saving production time and cost. However, the implementation of this technology requires a high level of tooling and molding skills to meet your needs.

Plastic injection molding is a process that many industries embrace and use widely thanks to its versatility. However, its popularity isn’t solely due to the quick production that’s possible with molding but also to the variability of the available materials. When manufacturers need to create products or parts with specific material properties, there are many injection molding materials to consider.

Over-molding technology is not just a means to add functionality, it is also an opportunity to elevate your brand’s aesthetics. Through numerous successful applications in commercial and consumer products, we’ve harnessed the power of over-molding to make logos truly stand out.

LDPE provides many of the benefits of PE/HDPE, but it is less stiff and more ductile. These traits make it well-suited to flexible plastic applications: consumers most commonly encounter LDPE in plastic bags or consumer-grade plastic water bottles. Like PE, it is easy to mold and cost-effective for appropriate projects.

Most common in industrial applications, TPU is a niche material that is best suited to molding heavy-duty products that will need to withstand a punishing environment. Despite its toughness, TPU molds easily and mold design is comparatively simple. TPU is also notable for its saltwater resistance.

One of the most durable plastic materials, polycarbonate can withstand significant deformation without breaking or even developing stress fractures. That trait made PC an obvious choice for the developers of the optical disc when CDs were first invented, but other uses include phone screens and eyeglass lenses.

Common electrical hand tools are almost made of two different plastic materials, and the softer material is to protect the user from the vibration caused by operating the tool. We are familiar with the benefits of the combination of various materials for users, and are super familiar with such molding technology, which can help designers design a series of electrical hand tools with higher adaptability and product quality.

Also known as nylon plastic, polyamides exhibit high resistance to electricity and are heavily wear-resistant. Nylon parts are very suitable for high-stress environments, and in some cases, they can surpass comparable metal parts in performance.

Polypropylene is a common plastic in use in many industries, especially within commercial food applications due to its food-safe nature and for toys because of its affordability. PP does not perform as well in cold applications, but it does provide excellent hot water resistance for easy washing and sanitizing because of its high melting point. PP is not a very dense material.

More commonly known as “polystyrene” or “PS,” HIPS contains materials beyond polystyrene. These materials, such as rubber, improve the impact resistance of a material that is otherwise very brittle. With its rigidity, some molding use cases for this substance include protective cases, such as those in use in hospital laboratories, medical devices or hardware tool chests.

Sometimes referred to as high-density polyethylene, HDPE is highly resistant to both chemical exposure and temperature extremes. HDPE melts and molds very easily with excellent fidelity. HDPE is also well-known for how easy it is to recycle it. Many products made using injection molding use plastics such as HDPE.

Crystalline plastics get their name from the highly-ordered crystal structure that their polymers form. This dense structure gives crystalline plastics several key properties. They melt only at high temperatures, and typically, crystalline plastics have better chemical resistance properties and superior strength and stiffness, making them some of the most common plastics used in injection molding. Some of the most common crystalline plastics include:

Nowadays, in order to meet various conceptual designs, the injection molding industry needs to use unique manufacturing technology to meet the solution of the final product. GATEWAY not only has 40 years of experience and achievements in special molding technology, we also widely use OVERMOLDING technology & INSERTMOLDING technology to meet most The product needs. In other words, if the product needs an aesthetic or ergonomic design, this molding technology can be used to meet those needs.

Amorphous plastics have no order to the arrangement of their molecules. The random nature of the molecular structure means that these plastics soften gradually as the temperature rises rather than melting immediately. These types of plastics for injection molding produce results that are waterproof and highly receptive to bonding, and they are simple to form. Common examples include:

The power of over-molding lies in its ability to combine materials for optimal performance. As experts in over-molding, we specialize in revolutionizing product design through advanced encapsulation molding techniques. Whether it's for complex product designs or simple applications, we bring our expertise to ensure the highest quality and functionality in every project.

TPR is a unique material that blends plastic polymers with rubbers, creating a material with the physical properties of both. TPR products exhibit a high degree of plasticity and can withstand long-term weathering. Also strong against chemicals, TPR is most common in hospital devices and tools.

A “semi-crystalline” plastic is a material in which a crystal structure is present, but it is not as rigid or as ordered as a true crystalline material. These solutions have many of the same properties as crystalline plastics but on a lesser level. A few typical semi-crystalline materials are:

With nearly a dozen different injection molding plastic types across three classes, there is an immense amount of variety to consider. Choosing the right injection molding materials is essential for product quality, budget planning and your long-term success. At Reliant Plastics, we leverage years of experience and an in-depth understanding of injection molding to assist your business.

Typically a part of applications such as tool housings, TV remote controls and other small, handheld tools or consumer products, ABS exhibits high strength and toughness without a correspondingly high material cost. ABS provides durability in products without adding a substantial amount of weight. The molding temperature of ABS influences its final characteristics.

Let our team provide key insights to help you make critical decisions about materials, mold forms and more. Request a free quote on your project when you contact Reliant Plastics today.

Furthermore, adding LEDs can take your products to a whole new level of appeal. Our expertise in over-molding allows us to create eye-catching designs that will captivate your customers and leave a lasting impression.

POM is a material best suited for producing heavy-duty industrial plastic parts. It scores high marks in all categories, such as heat and chemical resistance, but it is also more difficult to work with at the molding stage. POM is in electrical devices, pumps and fan blades.

Simply explain that OVERMOLDING is a forming process of covering plastic material on another plastic or any material. The common combination is to add a layer of soft, functional and ergonomic plastic material on the hard plastic surface, such as rubber material (Usually thermoplastic elastomer), the amount can improve the touch and texture of the product. Different colors or materials can also be used to change or enhance the visual favorability of the product, which cannot be provided by a single plastic molding technology characteristic.