Sunflower dehulling + pressing + wax control + packaging scope
Define hull level, cold or hot route, wax strategy, final container, and cake outlet before the equipment offer is written.
Sunflower oil projects become clear when the buyer describes the seed first, then the oil they want to sell. Whole seed, prepared kernels, pale cold-pressed oil, high-yield hot pressing, dewaxed clear oil, refined bottled oil, and crude bulk oil all need different boundaries.
Why Sunflower
Some sunflower buyers start with cleaned whole seed, while others need better kernel preparation for premium oil quality. Dehulling strategy, feed cleanliness, and storage condition all affect press behavior and final oil appearance.
A kernel-focused cold line supports a stronger premium position, while broader commercial lines may accept a different preparation level. The right configuration depends on the oil market, not on a single universal recipe.
Whole-seed pressing is simpler but produces darker oil with more wax. Kernel pressing (after dehulling to ~8% residual hull) yields lighter, cleaner oil. The dehulling target must be decided before the press is sized.
Sunflower oil contains 600–1200 ppm natural wax that causes cloudiness at room temperature. Winterization (cooling to 5–8 °C, holding 24–48 h, then filtering) is mandatory for bottled retail oil. sunflower oil line team supplies Dewaxing Equipment for this step.
Standard sunflower is hot-pressed (300/325 series, 100 kg/barrel, 30–40 min/barrel). Premium cold-pressed sunflower uses the 355–500 series (2 h/barrel). High-oleic varieties suit cold pressing; regular linoleic varieties are usually hot-pressed.
High-oleic sunflower (>80% oleic acid) is a premium frying oil with 12–18 month shelf life. Regular linoleic sunflower (~65% linoleic) is a commodity cooking oil. The variety determines route, pricing, and packaging.
Signature · Press route lab
Choose the route by product positioning, not marketing language. Temperature window, tonnage, and batch time decide who you sell to.
Models · 355 / 400 / 426 / 480 / 500
≤60°C on dehulled kernels
Models · 300 / 325
80–100°C pressing · 160–180°C conditioning
Models & line modules
Factory sunflower: pre-press ~500 kg/h. Hot: 325 model, Ø390×800 mm, 100 kg, 60 MPa, 2.2 kW; pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading. Cold premium: 355–500 (370–630 ton); cold route often ~4 h/barrel including loading for fuller extraction. Hull 20–30% of seed — premium targets ≤8% residual hull. Retail clear bottles need dewaxing 5–8°C × 24–48 h (wax 600–1200 ppm). High-oleic vs regular linoleic stay segregated.
Raw material boundary
Before choosing a press size, the feed should be named as oilseed sunflower, confection sunflower, mixed seed, partially dehulled material, or prepared kernels. Each option changes oil color, wax, cake texture, hull handling, and the downstream offer.
Check raw material requirements →
Route choice
High-oleic bottled oil often justifies lower-temperature handling and stricter filtration. Standard cooking oil normally favors conditioning or hot pressing, then dewaxing or refining according to the sales channel.
Compare route choices →
Use cleaner kernels, lower temperature, slower cycles, and careful polishing. The selling point is lighter color and product story, not maximum hourly output.
Conditioning improves oil flow and makes shift output easier to plan. Oil color is usually deeper, so filtration, dewaxing, or refining must match the final container.
If one factory wants both premium and standard SKUs, separate tanks, cleaning rules, lot records, and changeover time must be included.
Wax / filter / refine
Natural sunflower wax can crystallize and make oil look cloudy in cool storage. Whole-seed routes carry more wax; kernel routes carry less. The scope should state whether it includes settling only, filter polishing, winterization/dewaxing, neutralization, bleaching, deodorization, filling, or bulk transfer.
Quotation boundary
The same press can sit in very different projects: press-only replacement, cleaning plus dehulling plus pressing, crude oil with settling tanks, dewaxed bottled oil, or a refined and filled retail program. Pricing becomes credible only when the boundary is written in operational terms.
Equipment fit
Hydraulic press class matters, but sunflower projects should not copy the same paragraph used for peanut or soybean. Sunflower sizing has to start from dehulling depth, wax load, final container, and whether the oil is crude bulk, dewaxed clear oil, or refined bottled oil.
A 300/325 class discussion means different things when hull remains in the material. The oil color, wax load, cake value, and filter budget all change.
A pale cold-pressed oil can still haze in cool storage. If clear bottles are planned, dewaxing and final filtration belong in the same scope.
Separated hulls, sunflower cake, bagging, silos, conveyors, or manual carts change the press-room footprint as much as the press model.
Real equipment & workshop
Common project questions
Sunflower seed contains 600–1200 ppm natural wax that dissolves in warm oil but crystallizes at room temperature, causing haze. Winterization (dewaxing) — cooling to 5–8 °C for 24–48 h then filter-pressing — removes the wax. Without this step, retail bottles look defective.
Standard sunflower: 300/325 hot-press series (100 kg/barrel, 30–40 min). Premium high-oleic cold-pressed: 355–500 cold-press series (100 kg/barrel, ~2 h). The variety and product tier determine the model.
For premium oil, yes. Hulls are 20–30% of seed weight, contain no oil, darken the crude oil, and increase wax load. Target ≤8% residual hull for kernel pressing. Whole-seed pressing is acceptable for bulk commodity routes where color and clarity matter less.
Seed variety (high-oleic or regular linoleic), whether dehulling is in-scope, hot or cold route, daily shift output, dewaxing requirement, and whether the project includes refining, bottling, or only crude oil output.
It depends on the target oil and cake value. Lower hull in the feed usually improves oil color and cake quality, while whole-seed pressing may keep the front end simpler.
Sunflower oil can show wax-related haze after cooling. If the final product must stay clear in bottles, dewaxing or winterization should be included in the process boundary.
High-oleic projects usually care more about identity preservation, clean transfer, and bottle presentation, so seed segregation and post-press handling become part of the equipment plan.
Share feed condition, target output, post-press destination, and site constraints, and we will turn scope into a workable engineering plan.