Large Single-Cylinder Hot Compression Molding Press
Han Chang manufactures large single-cylinder hot compression molding presses with a maximum forming force of 1200 tons. Built to order for the selected compound and tool, the press combines heat, compression, mold-opening and closing venting, and pressure-hold curing. Applications include bathtubs, long tabletops, washbasins and large artistic products made with suitable heat-curing molding compounds.
Machine advantages
For a large part, start with the production job rather than tonnage alone. We recommend this single-cylinder press where the required force and mold geometry fit its capabilities: specify the platen, daylight, stroke and molding motions around your SMC/BMC, phenolic, rubber or solid-silicone process. The result is a practical equipment specification that supports consistent quality and improves production efficiency.
A single-cylinder build sized for your molding job
A maximum forming force of 1200 tons provides a clear starting point for press selection. Match the required force to the compound and projected molding area, then specify the space around the tool. A broad tabletop mold and a deep basin mold place different demands on the platen, daylight and part-removal clearance.
Release gases before the final curing hold
After initial compression, opening and closing the mold allows gases to escape. The press then holds the required thermal and pressing conditions for curing. Matching venting to material flow and reaction helps limit trapped-gas effects on filling and surface formation, supporting consistent molded-part quality.
Configure the process for the compound you use
SMC sheet charges, BMC bulk charges, molding powders and elastomer compounds have different processing needs. Han Chang builds the heating and molding sequence around the chosen material and tool, giving you a clear route from a compound specification to a working press configuration.
Keep large-part handling in the equipment decision
Platen space accommodates the tool, while daylight and stroke allow it to close, open and release the part. Considering charging and removal alongside pressing helps the operation run smoothly and improves efficiency. Your specification stays focused on the force, space and motions the product needs.
Compression, venting and curing
See Han Chang hot compression molding equipment in operation.
Official Han Chang video · Click to watch
Prepare the charge and load the mold
Prepare the quantity of sheet compound, bulk compound, molding powder or elastomer required for the part. The general workflow uses manual loading into a heated tool, with charge placement suited to the cavity and expected flow path.
Close the tool and compress
The single-cylinder press applies forming force as the tool closes. The heated material spreads through the cavity to form surfaces, rims, curves and ribs. Pressing motions are specified for the compound and geometry.
Open and close the mold to vent
Following initial pressing, mold-opening and closing motions release gases before compression continues. The venting sequence is arranged around compound flow and the curing reaction.
Maintain heat and force for curing
Hold the required conditions while the thermoset compound cures or the rubber or solid silicone vulcanizes or crosslinks. The formulation and part thickness guide the curing hold.
Open and remove the part
Release the forming force, open the mold and remove the product for trimming and inspection as required. Tool opening and part-removal space are included in the custom equipment specification.
Materials and large-part applications
Molding materials
SMC — sheet molding compound
Cut and place thermoset sheet charges for products such as composite washbasins, shower trays and sectional water tank panels. Sheet coverage, flow distance and projected molding area help define the press force and tool-space requirements.
BMC/DMC — bulk or dough molding compound
Bulk charges can be distributed to suit curved basins, ribbed covers and electrical molded components. A compression-moldable grade provides the flow and cure behavior needed to fill the selected tool geometry.
Glass-fiber-reinforced polyester and vinyl ester
Heat-curing unsaturated polyester and vinyl ester composites offer material routes for sanitary products, tank panels and industrial covers. Select the resin grade for the service environment, then match the hot-press configuration to its processing requirements.
Phenolic molding compound — PF / Bakelite
Phenolic compounds offer a molding route for heat-resistant industrial parts, insulating bases and molded panels. Heating, mold venting and the curing hold are arranged for the selected powder or preformed charge and tool.
Melamine molding compound — MF
Melamine compounds can be used to develop large trays, platter-type products and special molded shapes. Tool footprint, cavity layout and the required forming force guide the choice of a large single-cylinder press.
Urea-formaldehyde molding compound — UF / UMC
UF molding compounds serve sanitary fittings and electrical insulating components. A large-tool project can be specified around the actual cavity arrangement, mounting space and curing requirements.
Epoxy molding compounds and reinforced composites
Compression-moldable, heat-curing epoxy materials offer routes to industrial insulation panels, support components and special molded parts. The formulation and section thickness guide heating and the pressure-hold stage.
Rubber and solid silicone compounds
Heat-vulcanizing or crosslinking compounds can be used for large equipment-cover gaskets, frame-shaped seals and industrial sheet-form parts. Heating, venting and the molding hold are configured for the compound and mold.
Each press is configured for the selected compound and tooling. Moving to a different material also calls for the appropriate heating, venting and curing setup; the material options above describe application routes for made-to-order equipment.
Large molded products
Bathtubs and washbasins for sanitary products
Bathtubs and washbasins made with suitable heat-curing compounds are core application directions for this press. A deep bathtub mold needs opening and removal clearance; basin tooling also calls for material flow around the bowl, rim and corners. The press specification brings these tool requirements together with the necessary forming force.
Long tabletops for furniture and shared spaces
A compression-molded tabletop can take its outline and edge profile from a dedicated tool. The single-cylinder press is configured around the long mold footprint, projected molding area and the compound’s pressing requirements, with room to remove the panel for finishing and assembly.
Large artwork and architectural decorative pieces
Heat-curing compounds and purpose-made molds provide a route to repeatable artistic shapes, including decorative relief panels. The tool forms the contour and texture; the press supplies the heat and compression, with opening space suited to the shape and demolding direction.
SMC shower trays and sectional water tank panels
Shower trays form the base of a shower area, while molded tank panels are assembled into water-storage structures. These composite application routes use tools to form the panel surface, perimeter and reinforcing details. Projected area and material pressure requirements determine whether the job fits the single-cylinder press’s maximum force.
Meter cabinet covers and industrial equipment housings
Glass-fiber-reinforced thermoset covers enclose electrical equipment or form protective industrial housings. Ribbed profiles and perimeter features can be built into the mold, with venting and pressure-hold curing supporting the molding process. The compound grade and product design establish the required insulation, weathering or other service properties.
Tonnage and press specifications
This large single-cylinder hydraulic press is built to order, with a maximum forming force of 1200 tons. Use the configuration items below to compare a proposal against your mold, compound and part-handling needs.
| Specification | Configuration |
|---|---|
| Construction / supply | Large single-cylinder hot compression molding press; made to order |
| Maximum forming force | 1200 tons |
| Platen / table size | Specified for the tool footprint, mounting positions and working space |
| Daylight and stroke | Matched to mold height, product depth and part-removal clearance |
| Heating configuration | Specified for the selected compound’s cure conditions and tooling |
| Molding motions | Close and press → open/close to vent → hold and cure → open; customized to the process |
You can begin with a product photo or drawing, its dimensions and the material name. If a mold already exists, include its outside dimensions, height and cavity layout. These inputs let us discuss forming force, platen space and opening clearance as separate requirements before bringing them into one press specification.
Built around your mold and production
For a new basin, tabletop or industrial cover, start with its shape and compound. For an existing tool, start with mounting dimensions and the current molding workflow. Han Chang’s made-to-order approach brings these practical inputs into the choice of single-cylinder force, mold space and cycle motions.
Forming force, frame and platen size, daylight, stroke, heating and custom motions all affect the equipment quotation. List the press, tooling and handling provisions separately, and discuss plant power, installation space and planned output. This makes equipment proposals easier to compare without relying on a tonnage-only price.
Buyer questions
What is a large single-cylinder hot compression molding press?
It is a hydraulic press that uses a single main forming-cylinder configuration to mold suitable heat-curing compounds in a heated tool. Han Chang builds this press to order with a maximum forming force of 1200 tons. Its general molding sequence is charge loading, compression, mold-opening and closing venting, pressure-hold curing and part removal.
When should I choose this single-cylinder press?
Choose it when the required molding force and the planned tool can be matched within its 1200-ton maximum and specified mold space. Han Chang configures the platen, daylight, stroke and molding motions around the job. A large mold needs enough mounting and removal space as well as enough force; the number of cavities is determined by the product and tool layout.
How do I select tonnage, platen size and daylight?
Required forming force depends on the compound’s molding pressure and the projected cavity area, including the total area and layout of a multi-cavity tool. Platen size follows the mold footprint and mounting needs. Daylight is the open space available for the tool and part handling, while stroke is the pressing travel. A deep basin and a long flat panel therefore need different space specifications.
Can the press be built for SMC, BMC or DMC molding?
Yes. Han Chang can configure it for compression-moldable SMC sheet charges or BMC/DMC bulk charges, including suitable glass-fiber-reinforced polyester and vinyl ester formulations. The tool is loaded, closed and pressed, opened and closed for venting, then held for curing. Compound flow, projected area and mold dimensions guide the equipment specification.
Which other materials and products can be considered?
Material-specific builds can accommodate phenolic PF/Bakelite, melamine MF, urea-formaldehyde UF/UMC, epoxy, rubber and solid silicone suitable for hot compression curing. Application routes include industrial insulation parts, large trays, sanitary fittings and equipment-cover gaskets. Each material is paired with its appropriate heating, venting and curing setup.
What large finished products can this press make?
Application directions include bathtubs, washbasins, long tabletops and large artistic products using suitable heat-curing molding compounds. SMC shower trays, sectional water tank panels, meter cabinet covers and industrial covers are further compression-molding development routes. The actual part and tooling requirements determine the appropriate single-cylinder build.
How does the single-cylinder press compare with the twin-cylinder press?
Han Chang offers the large single-cylinder press up to 1200 tons and the large twin-cylinder press from 1200 to 2000 tons. Both are built to order around the compound, mold and product. Start with the single-cylinder configuration when the required forming force and tool space fit the job; compare the twin-cylinder press for higher force requirements. Platen dimensions, daylight and removal clearance remain important alongside cylinder configuration.
What determines the price, and how can I request a quotation?
The quotation depends on forming force, platen size, daylight, stroke, heating and the required molding motions. Tooling and handling provisions should be itemized so you can compare the same supply scope. Send Han Chang the product photo or drawing, dimensions and compound name; existing mold details and planned output help us develop the configuration and equipment quotation.
Specify a single-cylinder press for your next large part
Planning a washbasin, tabletop, bathtub or industrial molded product? Send Han Chang a drawing, photo or material requirement. We can work through the forming force, mold space and curing sequence with you and prepare a quotation around the equipment you actually need.
Process videos and further reading
- Customized hydraulic molding machine planning
- Hydraulic press selection by product, material, mold and capacity
- Carbon fiber composite hot press application
- safety-guarded hot press
- Reference video: long-platen hot press
- Reference video: Han Chang hydraulic compression equipment
- Reference video: compression molding machine components
