Korea Ever-Power ZQ60 handles both Korean K-beauty PP lotion IBM and Korean household HDPE lotion IBM through material changeover between production runs using the same mould set (if the container design is the same) or different mould sets (if the Korean brand specifies different designs). The machine changeover from HDPE to PP: purge barrel with PP at PP temperature (210-245°C), adjust mould temperature from 18-26°C (HDPE) to 55-70°C (PP cosmetic) by activating the mould temperature controller to the higher setpoint — mould temperature equilibration at 55-70°C takes approximately 15-20 minutes from 18-26°C baseline. Run 10-15 startup shots to allow both temperature stabilisation and PP melt quality verification before declaring production quality. Korean contract IBM producers running a ZQ60 for both Korean K-beauty PP lotion and Korean household HDPE lotion typically schedule them as alternating production blocks of 3-5 days each: Korean household HDPE lotion IBM at high-speed 18-26°C mould producing 7,500/hr+ for Korean national brand contract volumes, then material and temperature changeover to Korean K-beauty PP lotion IBM at 55-70°C mould producing 5,500-6,000/hr for Korean premium brand smaller volumes. This scheduling achieves 85-92% ZQ60 annual utilisation across both production tiers on a single ZQ60 — the commercial justification for a single ZQ60 investment to serve both Korean K-beauty and Korean household lotion pump bottle IBM markets simultaneously.

Korean body lotion formulations are generally well-tolerated by HDPE IBM containers, but three ingredient categories require specific HDPE IBM compatibility consideration. (1) Essential oils at high concentration: Korean lotion products with botanical-focus marketing (orange extract, rose oil, lavender oil) sometimes specify essential oil at 2-5% in the formulation. Essential oils (d-limonene, linalool, geraniol) are terpene solvents that swell HDPE at concentrations above 2% — verify HDPE IBM container weight gain at 40°C/90 days for Korean lotion formulations with essential oil loading above 2%. (2) Mineral oil / petrolatum: Korean intensive body lotion with petrolatum at 5-15% or mineral oil at 5-20% — petroleum-derived hydrocarbons are good solvents for HDPE at high concentration and temperature. Korean body lotion with petrolatum or mineral oil above 10%: verify HDPE wall swell at 40°C/90 days; consider PP IBM if the Korean brand’s Korean safety data requires a zero-swell container material for high-petroleum formulations. (3) Alpha hydroxy acids (AHA): Korean body lotion with lactic acid or glycolic acid at 5-10% pH 3.5-4.5 — low pH Korean lotion with AHA. HDPE is excellent pH resistance from pH 1-14; AHA in Korean body lotion presents no HDPE compatibility concern at Korean body lotion usage concentrations. Korean dermatologist-recommended AHA body lotion IBM containers are standard HDPE IBM without special material grade selection.

The same IBM mould set cannot run both 250 ml and 300 ml containers — the injection mould (preform cavity size), blow mould (blown bottle body volume) and stripping station are all dimensioned for a specific container volume and design. For a Korean lotion pump bottle producer wanting to run both 250 ml and 300 ml formats on the same ZQ60, Korea Ever-Power supplies two separate mould sets: one for 250 ml at 8-10 cavities and one for 300 ml at 6-8 cavities. Mould set changeover on ZQ60 takes approximately 4-6 hours (injection mould, blow mould and stripping station all require simultaneous swap) — typically performed during a Korean production shift changeover or at Korean weekend maintenance. Where a Korean lotion pump bottle producer needs to minimise mould set investment across 250 ml and 300 ml, Korea Ever-Power can design the 300 ml mould set to also run a 250 ml container at reduced fill height by adjusting the IBM blow dwell and fill volume — the 300 ml container body at 75% fill produces a 225 ml appearance, not a 250 ml container. For volume-accurate Korean lotion pump IBM, separate mould sets for each volume are required.

Korean 500 ml shower gel HDPE IBM on ZQ80 (6-8 cavities, 28/410 neck, 5.2 s cycle) specifies wall minimum 0.75 mm at all body zones — the thickest wall specification in the Korean lotion pump IBM range. The higher wall specification versus Korean hand sanitizer (0.60 mm) or Korean toner (0.55-0.65 mm) is driven by three factors at the 500 ml format. First, the 500 ml body height (typically 180-210 mm) at HDPE IBM requires adequate wall stiffness to resist the column compression load of a full bottle in Korean retail stacking (4-6 bottles high in Korean bathroom retail display) — insufficient wall at the 500 ml body height causes cosmetic flattening at the body waist zone under stacking load. Second, Korean shower gel formulations with high surfactant concentration (20-30% total surfactant loading) require HDPE ESCR F50 ≥300h — thicker wall provides more material cross-section for ESCR initiation resistance at the IBM container body. Third, Korean bathroom pump dispenser repeated actuation force on the 500 ml body: 200-400 pump strokes over the container lifetime requires the IBM body to resist repeated lateral force at the shoulder zone where the pump mechanism contacts the container. Korea Ever-Power specifies 0.75 mm minimum wall for Korean 500 ml shower gel IBM on ZQ80 and verifies wall distribution on production trial containers using ultrasonic wall thickness gauge at 8 measurement points (4 axial heights x 2 diametrically opposed radial positions).