The career of two-color injection molding has developed rapidly, and the current market is booming. The two-color injection molding process can make products look more beautiful and easily change color without spraying, but it is expensive and requires high skills. However, the matching materials for two-color injection molding must meet two fundamental compatibility conditions: adhesive compatibility and processing compatibility. In addition, the following requirements must be satisfied:

Planning and manufacturing of plastic molds

(1) An injection unit is a single cylinder injection structure that is parallel in the same direction, parallel in the opposite direction, and horizontally straight in the same direction in the L shape and Y shape;

(2) Clamping molds, standard parts, straight turntables, horizontal turntables, rotating shafts, robot rotating tissues,

(3) In addition to the standard oil pressure motor drive, there is also an ESD (Electric Screw Drive) electric feeding structure for feeding materials;

(4) Mixing nozzles, special nozzles with markings, waves, flow marks, abrupt changes, and interlayers;

(5) The oil circuit adopts ACC pressure storage, high-speed eruption, and closed circuit planning.

The above is an introduction by plastic mold planning and manufacturing manufacturers to "What requirements should be satisfied with dual color injection molding materials?" I hope it can help you. Dual color injection molding is highly responsive and repeatable, improving speed and stability; Two materials or two colors can be formed at the same time, greatly reducing the process and manpower, achieving cost savings; The parameters are set and the system is adjusted to a very simple numerical operation.

Plastic mold planning and manufacturing manufacturers talk about pressure control in the process of two-color injection molding

Plastic mold planning The manufacturer informs everyone that dual color injection molding and dual color injection molding are two important processes: filling and pressure retaining. So how should we control the injection pressure when molding dual color injection molds? Today, the plastic mold planning and manufacturing manufacturer will take everyone to have a look.

1. Injection pressure

In current two-color injection molding production, the injection pressure of almost all injection molding machines is based on the pressure exerted on the plastic by the top of the plunger or screw (converted from oil pressure). The role of injection pressure in injection molding is to overcome the flow resistance of the plastic from the barrel to the mold cavity, endow the melt with a filling rate, and compact the melt.

2. Plasticizing pressure

During injection, the plasticizing pressure varies with screw planning, product quality requirements, and the type of plastic. If these conditions and screw rotation speed remain unchanged, adding plasticizing pressure will strengthen shearing, which will improve melt temperature, but will reduce plasticizing efficiency, add countercurrent and leakage, and add driving power.

In addition, improving the plasticizing pressure can often make the melt temperature uniform, color mixture uniform, and gas discharged from the melt. Generally, under the premise of ensuring excellent product quality, the plasticizing pressure should be determined as low as possible. The detailed values vary depending on the type of plastic bicolor mold used, but rarely exceed 20 kg/square centimeter.