Over Molding

Over moldingof keyplast is a special plastic molding process. Overmolding custom injection moldingis similar to the two-color molding or two-shot molding process. Over moulding can make the surface of the product full of softness and increase product functionality and added value.

With this technology, product functions can be increased, such as noise reduction, vibration reduction, waterproof, anti-collision and added value. Overmolds is widely used in mobile protective shells/mobile protective sleeves.

Overmolding Process

Plastic overmolding has a process in which a certain materials used in injection moulding is molded in a primary plastic mold, and the molded part is taken out and placed in a secondary molding mold to inject the same or another plastic material into tpu overmoldingprocess. Overmolding process has key factors as below:

Insert Molding VS Overmolding

Insert molding and overmolding injection molding are very similar, but there are significant differences between the two processes. Injection overmolding is a two-step process in which two separately molded parts are combined to enhance product functionality. While insert injection molding is a slightly faster process because the two plastic materials are molded at the same time. Besides, over molding can not only give designers and engineers more creative freedom, but cost-savings of assembled parts as well. Whether you choose insert molding or over moulding, we understand the importance of creating a strong bond between components. We'll recommend the right innovative polymer solution, like thermoplastic polyurethane overmolding (TPU overmolding) to deliver the chemical adhesion you need.

Overmolding VSTwo Shot Molding

01

Two-shot injection molding

Two-shot injection molding is also called two-color mold injection. 2 shot injection molding, also called 2k injection moulding, is to inject two plastic materials on the same injection molding machine in two moldings, but the product is only ejected once. The mold is usually completed by a set of molds and requires a special two-color Injection molding machine.

The same back mold, different front molds, high production efficiency, good product quality, suitable for mass production.

02

Over molding

Over molding, the two plastic materials are not necessarily injected on the same injection molding machine, but are molded in two parts; after the product is taken out from one set of molds, it is placed in another set of molds, inject molding. Therefore, this molding process is usually completed by two sets of molds, without the need for a special two-color injection molding machine.

Injection overmolding is to first take part of the product out of injection molding, and then put it into another injection molding machine for injection molding. The efficiency will be slower and the cost will be higher, so it is suitable for small batch production.

Why so many manufacturers like over molding?

Regarding this problem, we can learn one or two of the advantages of overmolding injection molding.

First, the product quality of over-molding can be improved. Injection overmolding can optimize the copolymerization of hard and soft materials to form strong molecular bonds. The result is a single part with production and feature advantages. It can be used for various product designs in injection moulding applications. The injection overmolding also allows the use of transparent plastics, colorful graphics, and fashionable finishes for molding, thereby improving your product functionality and market value.

Second, plastic injection overmoldingcan reduce the cost of production. Complete the entire production process in one injection molding machine, overmolding injection molding effectively reduces unit costs, reduces processing and secondary assembly, and reduces costs and waste associated with assembly defects, thereby shortening the molding cycle and improving work efficiency.

Furthermore, china injection molding factorycan also improve people's experience. Over the past 10 years, it has completely changed the aesthetic standards, design ideas, and functional requirements of consumer products. The use of plastic materials with different textures has improved the touch and function of products. Many of the common toothbrushes and mobile protective cases in our lives are products produced by using injection overmolding technology.

Other supplier products

	Plastic Injection Mould Tooling	Plastic molds are tools that are matched with plastic mold makingmachines in the plastic processing industry to give plastic products a complete co...
	Injection Mold Design Engineering	Injection mold design engineeringis a procedure at the first stage of injection molding process, which develops the injection mold designs to impro...
	Two Shot Molding	Two shot molding, also called double shot moulding, dual shot injection molding，multi shot injection molding or 2k injection moulding is one catego...
	Injection Molding	Plastic Injection Molding Plastic Injection Molding Plastic injection mouldingis a method of making plastic products. The molten plastic is inj...
	Two Shot Molding	Two shot moulding, also called double shot injection molding, double shot moulding, multi shot injection molding or 2k injection moulding is one ca...

供应产品

Same products

	PTFE Corrugated Tube	卖方: Jiangsu Xinrui Plastic Technology Co.,Ltd	The process is to make PTFE thin-walled tube at a certain speed through a temperature of 270℃ ~ 2...
	Over Molding	卖方: Taizhou Huangyan Fow Mould CO., LTD	Over moldingof keyplast is a special plastic molding process. Overmolding custom injection moldin...
	Standard Mold Parts	卖方: Dongguan City Fangling Precision Mould Co., LTD.	We provide DIN(Deutsche Industrie Normen) standard mould partsof high quality to our customers. T...
	Anmei-Polyamide Nylon 6 (PA6) for Engineering Plastics	卖方: Suzhou Anmei Material Technology Co., Ltd	Other than fiber-reinforced pa6 polyamide, the unreinforced nylon type 6 produced by Anmei, one o...
	Jigs & Fixture Parts	卖方: Dongguan City Fangling Precision Mould Co., LTD.	There are a wide variety of mechanical components. Our Fixture Parts are manufactured to precise ...