Walnut gourmet line: 1-5 μm clarity, dark glass + N₂, gift-set ready

Finishing scope

What walnut gourmet retail adds beyond pressing

• Filtration: 200-300 mesh + 1-5 μm bag → oil clarity Lovibond Y 5-15 (light golden). Hazy oil (>Y 20) cannot meet gourmet retail standard.
• Settling tank: 200-1000 L jacketed stainless 316L, ≤15°C, N₂ blanket O₂ <2%, ≤14-day hold before bottling.
• Filling line: 100-250 ml dark glass at 600-3000 bottles/h, piston/volumetric, inline N₂ flush, induction sealer for tamper-evidence.
• Labeling: front + back + neck wrap + best-before laser/inkjet code (variety + batch + date). Gift-set additional carton printing.
• Cold storage: ≤15°C finished-goods warehouse, refrigerated logistics for premium SKUs.

Common errors

Where walnut gourmet packaging fails

• Investing in 355 ton hydraulic premium press but filling bottles in ambient/uncontrolled fill area → product picks up dust, light, oxygen → gourmet positioning collapses.
• Skipping 1-5 μm bag filter, delivering Lovibond Y >20 hazy oil to retail. Consumers reject hazy walnut oil immediately.
• Clear or green-tinted glass instead of dark amber/violet → UV exposure cuts shelf life by 50%.
• Filling line not under N₂ → headspace O₂ >5% → peroxide rises rapidly even with dark glass.
• Gift-set carton printing on regular paper instead of matte/embossed premium stock → mismatched perception vs $20-50 retail price.

Project boundary

What to confirm before scoping Walnut Gourmet Bottling | 1-5 μm Filter, 100-250 ml Dark Glass + N₂, 6-12 Months

Walnut Gourmet Bottling | 1-5 μm Filter, 100-250 ml Dark Glass + N₂, 6-12 Months should not be quoted from an equipment name alone. Check feed lots, target oil, post-press handling, and packing rhythm in one scope before deciding which Walnut Oil Press modules stay. Factory cold-press page lists this oilseed — prioritize 355–500 (370–630 ton), pure press ~2 h/barrel.

When feed condition, moisture, impurities, batch weight, and product position are unclear, press tonnage and filter area become guesswork. Factory systems share 60 MPa and 2.2 kW motors; hot pure press is 30–40 min/barrel and cold pure press is ~2 h/barrel — cycle time matters more than brochure tonnage.

• Confirm whether feed is whole seed, kernels, pretreated material, or an existing semi-finished stream.
• Confirm whether the target is crude oil, filtered oil, bottled oil, drum ingredient oil, or a refining handoff.
• Hot cycle reference: pure press 30-40 min/barrel, ~1.5 h for 2 barrels with loading; cold pure press ~2 h/barrel, ~4.5 h for 2 barrels.
• Confirm batch rhythm, labor, changeover, retained samples, power (often 380V/50Hz/3ph), and site install conditions.

Factory model check

Match hot / cold models to factory hard data

Pin models to published factory specs before tonnage talk.

Hot 300/325: 300–325 ton, 60 MPa system, standard barrel Ø390×800 mm / max 100 kg, pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading, 2.2 kW motor. Cold 355/400/426/480/500: 370–630 ton, integrated frame, same 100 kg standard barrel, pure press ~2 h/barrel, ~4.5 h for 2 barrels with loading; optional Ø300 high-pressure barrel max 60 kg. Residual oil target ~≤5% (peanut hot often 6–8% measured).

• Standard barrel Ø390×800 mm, max ~100 kg crushed feed; optional Ø300 high-pressure barrel max ~60 kg.
• Cylinder material 27SiMn; cold frames are integrated molded steel; hot frames are typically H-type channel steel.
• Factory cold-press page lists this oilseed — prioritize 355–500 (370–630 ton), pure press ~2 h/barrel.

Equipment check

project scope needs to land in equipment interfaces

Once the route is clear, write the interfaces: how preparation feeds the press, how oil leaves the press, how filtration connects to tanks, and how packing receives finished oil.