Meiki – Injection-Press Machine
![Injection-Press machine, Meiki,](https://easternplastics.co.uk/wp-content/uploads/2013/06/mdip01.jpg)
Injection-Press Machine
Comparison to Conventional Machines
Examples
Under Engine Skirt
- Uniform thickness and less distortion/warping
- Projection area= 5700cm2
- Material: PP
- Thickness 1.3~2.0mm
- Temperature: 260℃
- Centre gate Mould Temperature: 60℃
![Injection Press Moulding example](http://www.meiki-ss.co.jp/eng/mac/image/mdip04.gif)
Injection press moulded Press pressure = 650-ton
![Standard Injection Moulding example](http://www.meiki-ss.co.jp/eng/mac/image/mdip05.gif)
Standard injection moulding process Clamping force = 850 ton Injection pressure = 1700kg/cm2
M200C-DM Laptop Chassis
-
- Glued moulding- Copper foil(35um)
- Material: ABS/PC/PBT+CF15%
- Thickness=0.9mm
![Laptop chassis example](http://www.meiki-ss.co.jp/eng/mac/image/mdip06.gif)
Door Trim
- Lower material flowing pressures allows soft inserts to be over moulded.
![Door trim example](http://www.meiki-ss.co.jp/eng/mac/image/mdip07.gif)
Glued Fabric insert
Moulding sequence
- Mould closes to controlled open position
- Injection starts
- Mould compression
- Mould open and ejection
Meiki Pre-Press System (MPPS)
The Meiki Pre-Press System preloads the material in the screw and barrel using a shut-off valve at the nozzle tip. The screw moves forward closing the check valve on the head, trapping the material inside the barrel at a constant pre-injection pressure achieving an even load density. The screw position after pressurisation is taken as the injection shot volume starting point by the MPPS control system. This enables a constant shot volume to be injected into the mould. Removing any unwanted variation in final product quality.
![MPPS example](http://www.meiki-ss.co.jp/eng/mac/image/mdip09.gif)
MPPS system example
![MPPS test results](http://www.meiki-ss.co.jp/eng/mac/image/mdip10.gif)
Effects of MPPS control
For more information regarding Meiki’s Injection-Press Machine, please use the email form below to get in touch with us.