Ulai Enterprises is an experienced and quality-oriented supplier of hydraulic rubber vacuum compression molding machines to the rubber processing industry across India. Our range includes rubber vacuum compression molding machines, conventional compression molding presses available in H-type, pillar-type (4-column), and C-type frame configurations, from 50 ton to over 500 tons clamping force.

We are a client-centric organization. We do not simply supply a machine — we work with each customer to understand their application, part geometry, compound type, cycle time target, and quality requirements before proposing the right press model, platen size, and configuration for their final selection. After delivery, our team supports installation, process stabilization, operator training, and ongoing technical queries.

Rubber vacuum compression molding machines

Rubber vacuum compression molding is the preferred process for molding rubber, silicone, and composite materials where air entrapment or porosity in the finished part is not acceptable. By enclosing the mold within a vacuum chamber and evacuating air before and during the compression and cure cycle, vacuum compression eliminates the voids, blisters, and porosity that are common defects in conventional compression molding - particularly with silicone and specialty compound formulations.

Key advantages of vacuum compression molding

• Eliminates void and porosity defects caused by trapped air during mold closure
• Produces cleaner, denser molded parts with improved mechanical properties
• Essential for medical-grade silicone molding where porosity is unacceptable
• Reduces flash thickness — vacuum-assisted closure achieves more precise mold shut-off
• Better suited for complex mold geometries with deep cavities

Available configurations

Vacuum compression machines are available in different tonnage capacities, single and double station configurations, and with bottom up or more mold ejector (RT) devices. Multi-station configurations allow one station to be unloading and loading while another is in the cure cycle — maximizing press utilization and output.

Frame type selection guide

• H-Type (4-pillar / column type) - the most common configuration; high rigidity, suitable for large platen sizes and high-tonnage applications; allows top-down mold loading
• C-Type (C-frame) - three-sided open frame providing unrestricted front access; ideal for insert molding, rubber-to-metal bonding, and applications requiring robot or manual part insertion from the front
• Pillar Type - compact footprint with column guides; good rigidity for medium tonnage applications; popular for gasket and seal production

Description	Unit	UVC100	UVC160	UVC200	UVC250	UVC300	UVC350	UVC400
Clamping Force	Ton	100	160	200	250	300	350	400
Heating Platen Size	mm	450*450	500*500	550*550	600*600	650*650	700*700	750*750
Heating Power	Kw	9*2	13.5*2	14.4*2	15.3*2	20.4*2	21.6*2	22.8*2
Oil pump Motor	Kw	4*2	4*2	7.5*2	7.5*2	7.5*2	7.5*2	7.5*2
Total Power	Kw	29	38	47	49	59	62	64
Weight	Ton	7	8.5	9.5	11.7	13.5	16	22
Dimensions	m	3.1*2.05*2.25	3.25*2.2*2.3	3.6*2.35*2.45	3.75*2.5*2.5	3.9*2.65*2.55	4.05*2.8*2.65	4.2*3*2.7
Dimensions	s	5	3	5	5	5	5	7