China Demark Group Co., Ltd. is one of the important pet preform injection molding machine manufacturer and pet preform injection moulding machine supplier offering the proposal of whole line for PET packaging. It is a morden technology enterprise that concentrates on technology design, manufacturing and marketing.

High-speed(9s) Pet Preform Injection Moulding Machines Systems
Demark 32-72 cavities pet preform injection molding system with robot and two screw (injection molding system@injection moulding machine@injection moulding system@) 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 machines are available from 280 to 500 tonnes (2800 to 5000 kN) and up to 72 cavities.

Demark pet injection systems offer:
1. Faster cycles
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.

Technical Parameter:

TYPE			DMk-PET32	DMK-PET48A	DMK-PET48B	DMK-PET72A		DMK-PET72B
INJECTION UNIT	Screw L/D Ratio	L/D	25	25	25	25		25
	Injection Pressure	Kgf/C㎡	1080	875	875	875		875
	Machine Size(LxWxH)	mm	8650×3600×2200	9100×3790×2240	9100×3790×2240	11080×4400×2500		11080×4400×2500
	Theory Shot Volume(Max)	㎝	1700	1815	2905	2905		4069
	Shot Weight(PS)	g	2040	2178	3486	3486		5426
		ozs	72	77	123	123		191
CLAMPING UNIT	Clamping Force	T	280	360	360	500		500
	Clamping Stroke	mm	545	645	645	680		680
	Max/Min Thickness of Mould	mm	280~700	300~720	300~720	300~820		300~820
	Space Between Tie Bars (WxH)	mm	610×610	660×860	660×860	820×820		820×820
	Ejector  Stroke	mm	150	180	180	200		200
	Ejector  Force	T	10	12	12	21		21
	NO.of Ejector Pins	pcs	5	5	5	13		13
Max Pressure of System		Kg/C㎡	140	140	140	140
INJECTION MOULD	Cavity (Max)	PCS	32	48	48	72		72
	Neck of Bottle (Max)	mm	42	42	42	42		42
	Length of Preform(Max)	mm	190	190	190	220		220
	Weight of Preform(Max)	g	45	35	45	30		45
	Form of Mould	Pneumatic pin-valve gate hot-runner
POWER UNIT	Pump Motor Power	KW	45	82	82	130		130
	Robot Power	KW	12	12	12	14		14
	No.of Heater Zones(0~400℃)	set	33+8	49+10	49+10	73+13		73+13
	Heater Input Capacity	.KW	40	53	58	58		62
	Mould Heater Capacity	KW	38	51	51	70		70
Auto Manipulator	Manipulator	腔Cav	96	144	144	216		216
	Cooling Form	腔Cav	96	144	144	216		216
OTHER REQUEST	Electric Power supply	V	380	380	380	380		380
	(3-phase AC)	KW	130	155	155	235		245
	Chilling Water	℃	5~15	5~15	5~15	5~15		5~15
		Mpa	0.48	0.45	0.45	0.45		0.45
		L/min	420	600	600	400		400
	Cooling Water	℃	30~55	30~55	30~55	30~55		30~55
		Mpa	0.25	0.25	0.25	0.25		0.25
		L/min	100	200	200	200		200
	Compressed Air	Mpa	0.7~0.9	0.7~0.9	0.7~0.9	0.7~0.9		0.7~0.9
		L/min	570	800	800	1200		1200
Compressed Air (Max)		Pcs/h	9600	17000	17000	23000		23000