WIDE MOUTH JAR IBM · COSMETIC & FOOD · PP HDPE PCTG · KOREA EVER-POWER
Wide mouth jars produced by injection blow molding offer cosmetic and food brands a one-piece seamless jar body with injection-formed lid thread, zero base weld line and IBM-quality surface finish — advantages over both injection-moulded jar halves (assembly seam) and EBM wide-mouth jars (blown neck imprecision). Korea Ever-Power ZQ40 and ZQ60 IBM machines produce wide mouth jars from 30ml through 500ml in PP, HDPE and PCTG for Korean and global cosmetic, food and pharmaceutical jar applications.
KOREA EVER-POWER · ANSAN-SI, GYEONGGI-DO · JULI 2026
WIDE MOUTH JAR IBM · KEY PROCESS REFERENCE
JAR RANGE
30–500ml
Wide mouth jar IBM format range on Korea Ever-Power ZQ40 (30-150ml) and ZQ60 (100-500ml). Jar mouth diameter 38-100mm injection-formed to ±0.05mm for lid fitment precision
KEY IBM ADVANTAGE
One-piece seamless
IBM wide mouth jar is produced as a single seamless body — no assembly seam (unlike injection-moulded jar halves joined at ultrasonic weld), no base pinch weld (unlike EBM wide mouth jar), no post-production trim
BLOW RATIO CHALLENGE
Low ratio (1.2–1.8:1)
Wide mouth jar IBM uses low blow ratios (1.2-1.8:1) compared to narrow-neck bottles (1.8-2.5:1), requiring careful preform wall distribution design to avoid heavy base and thin body wall at low blow ratio IBM
LID THREAD PRECISION
±0.05mm OD
Wide mouth jar IBM lid thread injection-formed to ±0.05mm OD — critical for cosmetic cream jar lid fitment (torque specification 0.3-0.8 Nm) and food jar airtight seal compression between jar thread and lid gasket
SEKTION 01
Wide mouth jars for cosmetic cream, food condiment and pharmaceutical applications are produced by three competing manufacturing processes: injection moulding of jar body and base as separate components (joined by ultrasonic welding or snap assembly), extrusion blow moulding (EBM), and injection blow moulding (IBM). Each process produces a wide mouth jar with different quality outcomes that determine market suitability. IBM produces a wide mouth jar body as a single seamless piece from injection preform to blown jar — with no assembly seam, no base weld line and injection-formed lid thread at ±0.05mm OD precision. Korea Ever-Power’s ZQ series IBM machines produce wide mouth jars across the 30-500ml range for Korean and global cosmetic, food and pharmaceutical brand customers who specify IBM jar quality over injection-moulded assembly or EBM alternatives.
| KRITERIUM | IBM JAR ★ | IM Assembly Jar | EBM Jar |
|---|---|---|---|
| Body seam | None (seamless) | Ultrasonic weld seam at body mid-height | Parting line on body |
| Base integrity | Injection-solid, no weld | Injection-solid (separate base component) | Pinch-weld base |
| Lid thread OD precision | ±0.05mm (injection-formed) | ±0.05mm (injection-formed) | ±0.15-0.30mm (blow-formed) |
| Produktionsaffald | Nul blitz | Assembly defect rate 1-3% | 20-30% pinch flash |
| Tooling investment | Mid (3-component mould) | Higher (2 IM moulds + assembly line) | Lower (single EBM mould) |
AFSNIT 02
Low Blow Ratio Jar IBM Challenges
Wide mouth jar IBM at low blow ratio (1.2-1.8:1) presents three design challenges that Korea Ever-Power’s wide mouth jar mould tooling specifically addresses. Base wall excess: at 1.2:1 blow ratio the jar base region receives minimal blow stretch, leaving the preform base wall thickness nearly unchanged (2.5-4.0mm) while the jar body wall blows to 1.0-1.5mm — creating a heavy base that adds unnecessary weight and cost. Korea Ever-Power’s core rod base taper design reduces preform base thickness at the injection stage to match the target jar base wall. Shoulder fill: the transition from wide mouth neck to jar body shoulder requires adequate polymer flow during blow inflation at low ratio — Korea Ever-Power’s blow mould shoulder geometry uses a 15-25° taper to guide material into the shoulder zone without cold-spot formation at low blow pressure. Body uniformity: at 1.2-1.8:1 blow ratio body wall variation is lower than at higher ratios, but mould temperature uniformity is more critical — Korea Ever-Power specifies conformal cooling channels in wide mouth jar blow moulds.
Wide Mouth Jar IBM Preform Design Principles
Korea Ever-Power’s wide mouth jar IBM preform design follows five principles: lid thread first — the preform injection cavity forms the jar mouth thread to final dimensions at injection; the thread geometry defines the preform bore and determines the maximum core rod diameter for wide mouth jar IBM. Taper preform wall — preform wall tapers from thicker at mid-body to thinner at base, compensating for the base over-thickness tendency at low blow ratio. Controlled preform height — preform height-to-diameter ratio is minimised for wide mouth jar IBM (ratio 1.5-2.5:1 versus 3-5:1 for narrow-neck bottles) to reduce preform cooling time at injection cavity. Pre-blow relief — Korea Ever-Power’s wide mouth jar blow mould includes a pre-blow air inlet at 1.5-2.5 bar that partially inflates the preform into the jar shoulder geometry before main blow pressure at 5-7 bar completes the jar body inflation. Cooling circuit segmentation — wide mouth jar blow mould uses separate cooling circuits for the jar mouth zone (colder, 8-12°C) and the jar body zone (slightly warmer, 12-16°C) to maintain differential cooling rates that prevent mouth thread deformation during body wall inflation.
AFSNIT 03
KOREAN COSMETIC CREAM JAR IBM — STANDARD FORMATS
30ml Night Cream
ZQ40 • 10-12 cav
30ml PCTG or PP IBM jar for Korean premium night cream and eye cream. PCTG IBM for water-clear product visibility; PP IBM for opaque white or pigmented premium brand colour. Korean luxury cosmetic brand lidded jar format
50ml Moisturiser
ZQ40 • 8-10 cav
50ml PP or PCTG IBM cosmetic jar for Korean moisturiser, face cream and sleeping mask. Standard K-Beauty jar size for Korean export to EU and US markets at department store cosmetic counter
100ml Body Cream
ZQ40/ZQ60 • 6-8 cav
100ml PP IBM jar for Korean body cream and butter. Larger jar mouth (63-70mm OD for hand-access product finger-scooping). White PP IBM standard for Korean mass-market; PCTG IBM for premium clear jar variant
200ml Hair Mask
ZQ60 • 4-6 cav
200ml PP IBM wide mouth jar for Korean hair mask, hair treatment pack and scalp care products. 70-80mm wide mouth for product dispensing access with fingers or spatula; smooth outer surface for label application
Korean K-Beauty export brands using IBM wide mouth jars on Korea Ever-Power ZQ machines benefit from the complete mould design and IBM mould tooling service including wide-mouth jar IBM støbeformkatalog for standard Korean cosmetic jar formats and custom jar design for differentiated Korean export brand packaging requirements.
AFSNIT 04
PP IBM Food Jar Applications
PP IBM wide mouth jars for food contact serve Korean and Asian specialty food markets: gochujang (fermented chilli paste) in 50-200ml PP IBM jars for premium Korean export at Asian grocery and supermarket food halls; doenjang (fermented soybean paste) and other fermented Korean condiments in 100-500ml PP IBM jars for Korean food brand premium packaging differentiation from injection-moulded assembly jars; and nutritional supplement powder (collagen powder, protein blend, vitamin powder) in 100-500ml PP IBM jars where IBM’s zero-flash virgin PP production satisfies food supplement contact material requirements without regrind contamination. Korea Ever-Power’s PP IBM food jar production uses food-grade PP IBM grades (Korean MFDS IS and EU Regulation 10/2011 compliant) with ZQ40/ZQ60 production records for food supplement brand customer GMP compliance.
PCTG IBM Clear Food Jar Applications
PCTG IBM wide mouth jars for food contact provide water-clear product visibility in a BPA-free, food-compliant clear rigid jar for premium Korean and export food brands: premium Korean honey in 50-200ml PCTG IBM clear jar (natural amber honey colour visible through the PCTG IBM wall for retail impulse purchase); artisan jam and preserve in 50-100ml PCTG IBM clear jar for Korean specialty food and confectionery brands at Korean airport duty-free and gourmet food channels; and Korean ginseng extract in 30-100ml PCTG IBM clear jar for Korean health food export to Chinese and Southeast Asian premium health food distribution. PCTG IBM food jar requires dehumidifying dryer (85°C, 4-6 hours) as mandatory pre-process auxiliary — see N02 PCTG IBM guide for full PCTG dryer specification for ZQ40/ZQ60 food jar programmes.
AFSNIT 05
| JAR FORMAT | MASKINE | HULLER | CYCLE (s) | OUTPUT/TIME |
|---|---|---|---|---|
| 30ml cream jar | ZQ40 | 10–12 | 3.8 | ~9,500-11,400 |
| 50ml cream jar | ZQ40 | 8–10 | 4.1 | ~7,000-8,800 |
| 100ml body jar | ZQ40/ZQ60 | 6–8 | 4.5 | ~4,800-6,400 |
| 200ml hair jar | ZQ60 | 4–6 | 5.5 | ~2,600-3,900 |
AFSNIT 06
Korean Cosmetic Jar Lid Specifications
Korean cosmetic cream jar lids are typically injection-moulded PP or ABS with a polypropylene or PE foam gasket insert for airtight cosmetic product seal. Korea Ever-Power ZQ40/ZQ60 IBM jar thread OD at ±0.05mm enables Korean cosmetic lid suppliers (Korean closure manufacturers) to specify tight lid torque ranges: application torque 0.4-0.8 Nm (the torque applied by the Korean consumer when closing the cream jar) and removal torque 0.3-0.7 Nm (below application torque to ensure the Korean consumer can open the jar without tools). IBM thread precision at ±0.05mm holds these torque ranges across all cavities — EBM thread variation at ±0.20-0.30mm produces wide torque variation (0.2-1.2 Nm removal torque range) that causes Korean consumer complaints of lids that are too tight or too loose on the same jar production batch.
Food Jar Airtight Seal and Lid Gasket
PP and PCTG IBM food jars for Korean food contact applications use compression gasket lids (PE foam, silicone or EPDM gasket inside the lid) that compress against the IBM jar thread flange to form an airtight seal for oxygen-sensitive food products (premium Korean honey, artisan jam, gochujang). The IBM jar thread flange sealing surface must be flat and smooth (Ra <0.8 μm) to achieve consistent gasket compression across all cavities. Korea Ever-Power’s wide mouth jar blow mould cavity includes a defined sealing flange geometry on the jar mouth rim for food jar IBM programmes where gasket-sealed lids are specified. The IBM sealing flange at ±0.05mm flatness (from injection mould dimensional control) consistently compresses the lid gasket to the 0.1-0.3mm target gasket deformation required for airtight food jar seal at Korean food retail shelf life specifications.
INGENIØR OFTE STILLEDE SPØRGSMÅL
Q 01
Why is IBM wide mouth jar preferred over two-piece injection-moulded jar assembly for Korean premium cosmetic brands?
Korean premium cosmetic brands at department store counters (Amore Pacific Sulwhasoo, LG H&H Whoo, Innisfree, Laneige) specify IBM wide mouth jars over two-piece injection-moulded assembly jars for three commercial reasons. First, visual quality: IBM jars have no external weld seam on the jar body wall — the seamless exterior surface presents a clean, premium aesthetic that Korean consumers associate with glass-equivalent packaging quality. Injection-moulded assembly jars have an ultrasonic weld seam at the body mid-height or at the base-body junction that is visible as a faint parting line on the jar exterior, reducing perceived packaging premium. Korean cosmetic brand quality managers routinely reject injected-moulded assembly jars for premium tier lines on the basis of weld seam visibility. Second, seal integrity: IBM jar body to base transition is an injection-solid continuous polymer wall without a weld zone — eliminating the risk of assembly seam leakage failure that injection-moulded jar assembly jars experience when cream products at high fragrance loading (5-15% aromatic fragrance content) weaken the ultrasonic weld bond over time on Korean shelf at ambient temperature. Third, production simplicity: IBM jar production in a single ZQ40/ZQ60 machine is simpler than managing injection moulding of two separate jar components plus ultrasonic weld assembly, separate inventory management for two component types, and assembly line quality control — Korea Ever-Power ZQ40/ZQ60 IBM wide mouth jar production delivers the finished jar ready for lid fitment in one production step.
Q 02
What maximum jar mouth diameter can Korea Ever-Power ZQ40 and ZQ60 produce by IBM?
Korea Ever-Power ZQ40 and ZQ60 wide mouth jar IBM capability is defined by the core rod maximum diameter that the ZQ injection platen can accommodate — the core rod tip diameter determines the minimum jar mouth bore diameter (the inner opening of the jar mouth after IBM). ZQ40 maximum core rod diameter: 85mm core rod tip diameter in ZQ40 injection cavity, producing a jar mouth inner bore of 80mm maximum. This accommodates Korean cosmetic cream jar mouth sizes from 38mm (30ml eye cream jar) through 75mm (200ml body cream jar) inner diameter. ZQ60 maximum core rod diameter: 100mm core rod tip, producing jar mouth inner bore up to 95mm. ZQ60 IBM wide mouth jar range: 50mm through 90mm inner bore, covering 50ml through 500ml Korean cosmetic, food and pharmaceutical wide mouth jar formats. For jar mouth inner diameters above 95mm (very wide-mouth storage jars, food containers with hand-access mouth above 95mm), Korea Ever-Power recommends ZQ80 or ZQ110 with larger platen clearance for the wider core rod required. Most Korean cosmetic cream jar applications (30-200ml) are within ZQ40 core rod diameter range, making ZQ40 the primary Korea Ever-Power machine for Korean cosmetic cream IBM wide mouth jar programmes.
Q 03
Can IBM wide mouth jars be hot-filled with Korean food products at 85°C filling temperature?
PP IBM wide mouth jars have limited hot-fill capability due to PP heat deflection temperature and jar body wall stress during hot-fill. PP IBM wide mouth jar hot-fill capability at 0.8-1.2mm wall: PP HDT (heat deflection temperature at 0.45 MPa) is 100-115°C for PP homopolymer — above the Korean standard hot-fill temperature of 85-90°C. However, filled PP IBM jars under hot-fill sidewall stress (hydrostatic pressure from the hot liquid plus ambient cooling contraction stress) can deform below the nominal PP HDT if the jar body wall is thin or if the PP grade has lower heat resistance. Korea Ever-Power’s hot-fill PP IBM jar design for Korean food applications specifies: PP impact copolymer (not homopolymer) for better hot-fill dimensional stability; minimum body wall 1.1mm for hot-fill PP IBM jar; and base radius design to absorb hot-fill vacuum deformation during cooling without visible base panel deflection. PCTG IBM wide mouth jars are NOT suitable for hot-fill above 65-70°C — PCTG Tg at 75°C limits PCTG IBM jars to cold-fill and ambient temperature food contact applications only. For Korean food products requiring true 85-90°C hot-fill in wide mouth rigid plastic jars, Korea Ever-Power recommends PP impact copolymer IBM at 1.1-1.2mm minimum wall on ZQ60, with pre-delivery hot-fill dimensional stability test at the customer’s fill temperature and product headspace vacuum specification before launching commercial production.
Q 04
How is IBM wide mouth jar surface decorated for Korean cosmetic retail?
Korean cosmetic IBM wide mouth jar surface decoration uses four primary methods aligned with Korean premium cosmetic retail presentation requirements. Hot-stamp on jar body: Korean cosmetic brands apply metallic foil (gold, silver, rose gold) to the IBM jar body using rotary hot-stamp at 44-46 mN/m corona-pre-treated surface. IBM jar body surface uniformity (no parting line, no weld mark) provides a clean hot-stamp substrate that injection-moulded assembly jar body weld seam zones cannot provide. UV screen print for brand text: Korean cosmetic brand name, ingredient list (INCI names in Korean and English) and product name UV screen-printed directly on the IBM jar body surface in 1-2 colour Korean cosmetic ink specification. Shrink sleeve: full-body sleeve for Korean cosmetic IBM jars at mass-market pharmacy retail (Olive Young, Watsons Korea) where full-body sleeve graphic provides maximum shelf impact at Korean beauty retail planogram. In-mould label (IML): Korea Ever-Power offers wide mouth IBM jar blow mould designs with label land geometry for in-mould label film application during blow inflation — IML on IBM jar provides permanent decorated surface without post-decoration process, combining IBM production and decoration in a single ZQ40/ZQ60 cycle. IML film is placed in the blow mould cavity before each shot at ZQ40/ZQ60 blow station by a Korea Ever-Power IML robot arm option.
Q 05
What PP grades does Korea Ever-Power recommend for Korean cosmetic wide mouth IBM jar applications?
Korea Ever-Power recommends PP random copolymer (RCP) grades for Korean cosmetic wide mouth IBM jar applications requiring mild clarity (translucent PP jar body for product colour hint), and PP homopolymer for fully opaque white or pigmented Korean cosmetic jar applications. PP RCP for cosmetic IBM jars: Lotte Chemical PP RP243 (Korean domestic RCP grade, MFR 8 g/10min, nucleated for higher clarity at ±0.3mm wall IBM), or LG Chem PP SP191 (MFR 12 g/10min, Korean RCP for IBM clean fill at ZQ40 standard barrel temperature 220-235°C). PP RCP at 50ml IBM jar wall 0.7-0.9mm produces translucent haze of 15-30% — sufficient for product colour visible through the jar at Korean pharmacy retail shelf illumination, while maintaining jar body opacity for cosmetic formulation light protection. PP homopolymer for opaque jars: Lotte Chemical PP H1500 or YPPI PP (MFR 10-15 g/10min) with TiO2 masterbatch at 1.5-2.0% addition for opaque white Korean cosmetic jar. Opaque white PP IBM jar is the dominant Korean mass-market cosmetic jar format (Innisfree, Laneige standard cream jar, Korean pharmacy cream jar) where opacity rather than transparency is the brand packaging design requirement. Korea Ever-Power pre-validates all recommended Korean PP grades on ZQ40 and ZQ60 wide mouth jar tooling at Ansan-si facility — customers can request IBM sample jars in their specified Korean PP grade before mould order placement.
Q 06
Can ZQ40 IBM produce a 50ml wide mouth jar and 50ml narrow neck bottle from the same machine?
Yes — ZQ40 is configured for both wide mouth jar IBM and standard narrow-neck bottle IBM from the same machine via mould set changeover, making ZQ40 a highly flexible IBM platform for Korean cosmetic brands requiring both jar and bottle formats in the same PP or PCTG material on one machine investment. ZQ40 changeover from 50ml wide mouth jar to 50ml narrow-neck bottle: blow mould set change only (injection cavity and core rod change required because jar core rod is wider-bore than bottle core rod at same volume); process parameter adjustment from ZQ40 HMI recipe (jar recipe: pre-blow 2 bar, main blow 5-6 bar, longer blow dwell; bottle recipe: main blow 7-8 bar, shorter blow dwell); startup shots inspection per cavity. Total changeover time ZQ40 jar-to-bottle: 50-65 minutes including mould change and startup qualification. Korea Ever-Power recommends Korean cosmetic brand customers who need both 50ml jar and 50ml bottle IBM formats to specify both mould sets at ZQ40 order, with Korea Ever-Power developing a common ZQ40 injection cavity bore specification where possible to allow shared injection cavity (and core rod) between the jar and bottle formats — reducing mould investment by eliminating duplicate injection cavity tooling between the two formats. Shared injection cavity feasibility depends on jar mouth diameter compatibility with the bottle neck diameter for the same preform bore specification — Korea Ever-Power’s mould engineering team evaluates this at customer format specification review.
WIDE MOUTH JAR IBM ENQUIRY · KOREA EVER-POWER
Korea Ever-Power provides ZQ40 and ZQ60 IBM machines with wide mouth jar mould design, PP HDPE PCTG jar IBM pre-validation, lid torque qualification and Korean cosmetic food contact compliance for Korean and global jar IBM programmes.
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