Preform Injection Machine

Product Description

Demark 72 cavities pet preform injection molding system@(injection moulding system@injection molding machine@injection moulding machine@) uses a new part cooling and handling system, which features:
1. Cooling on the inner surface of the preform without using compressed air, unlike most post-mold cooling systems which only cool the outer surface
2. Optimized cycle utilization _ being mounted on the moving platen, the cooling system remains active for up to 85% of the overall cycle.

Demark pet preform injection molding systems are available from 280 to 500 tonnes (2800 to 5000 kN) and up to 72 cavities.
Demark pet injection systems offer:
1. Faster cycles(10s)
2. Reduced energy consumption
3. Smaller footprint
4. Improved repeatability
5. Rapid set-up

Features:
1. Two state plasticizing enables plenty injection quantity;
2. Take out plate with three working position insures sufficient cooling time and shorter cycle time;
3. High quality parts and accessories from world famous brands enable higher speed and precision;
4. Special screw design increases torque while brings down shear force to avoid degradation;
5. Accumulator from world reputable manufacture increases performance while brings down power consumption;

Reflex Platens
Reflex platens distribute clamp force evenly across the platen face.
Reflex platens:
1. Allow for 10-30% lower clamp tonnage
2. Decrease mold wear
3. Improve part quality

Injection Units
Demark systems offer both reciprocating screw (RS) and two-stage injection units. RS units offer the performance required for many PET applications while two-stage is appropriate for higher throughput applications.

Polaris Controls
PC-based controls manage all functions of our PET production systems, with optional packages to integrate auxiliaries and downstream part handling equipment. Advantages include:
1. Faster cycle times
2. Improved shot-to-shot repeatability
3. Remote connectivity through ServiceNetLink
4. Control of molding system and auxiliaries from a single interface

Linear Bearings
Linear bearings support the moving platen directly on the machine base. This design reduces mold wear by improving platen alignment and perpendicularity, and provides a grease free molding environment.

TYPE			DMK-PET72A	DMK-PET72B
INJECTION UNIT	Screw L/D Ratio	L/D	25	25

	Injection Pressure	Kgf/C	875	875

	Machine Size(LxWxH)	mm	11080×4400×2500	11080×4400×2500

	Theory Shot Volume(Max)		2905	4069

	Shot Weight(PS)	g	3486	5426
		ozs	123	191
CLAMPING UNIT	Clamping Force	T	500	500

	Clamping Stroke	mm	680	680

	Max/Min Thickness of Mould	mm	300~820	300~820

	Space Between Tie Bars (WxH)	mm	820×820	820×820


	Ejector Stroke	mm	200	200

	Ejector Force	T	21	21

	NO.of Ejector Pins	pcs	13	13

Max Pressure of System		Kg/C	140

INJECTION MOULD	Cavity (Max)	PCS	72	72

	Neck of Bottle (Max)	mm	42	42


	Length of Preform(Max)	mm	220	220


	Weight of Preform(Max)	g	30	45


	Form of Mould	Pneumatic pin-valve gate hot-runner

POWER UNIT	Pump Motor Power	KW	130	130

	Robot Power	KW	14	14

	No.of Heater Zones(0~400 )	set	73+13	73+13

	Heater Input Capacity	.KW	58	62

	Mould Heater Capacity	KW	70	70

Auto Manipulator	Manipulator	Cav	216	216

	Cooling Form	Cav	216	216

OTHER REQUEST	Electric Power supply (3-phase AC)	V	380	380
		KW	235	245
	Chilling Water	degree	5~15	5~15
		Mpa	0.45	0.45
		L/min	400	400
	Cooling Water	degree	30-55	30~55
		Mpa	0.25	0.25
		L/min	200	200
	Compressed Air	Mp, , , a	0.7-0.9	0.7~0.9
		L/min	1200	1200
Compressed Air (Max)		Pcs/h	23000	23000