IBM洗剤：
洗濯用ボトル 射出ブロー成形ガイド

濃縮洗剤

300～600ml・注ぎ口38/400mm

韓国の高級濃縮洗濯洗剤（3～5倍濃縮）。小型ボトルタイプ – 標準の1～1.5リットル分を1本で置き換え可能。韓国ならではの利便性とプレミアム感を両立させたポジショニング。急成長中の韓国都市部アパート市場向け。

標準液体洗剤

500～800ml・38/400または38/410

韓国の大型スーパーで販売されている韓国製中級液体洗濯洗剤。IBMはZQ110（4～8槽）でこの範囲をカバー。800ml以上で取っ手付きはEBM。取っ手なしのIBM 800mlはZQ110（4槽）で入手可能。

柔軟剤

300～600ml・28/410ポンプ

ポンプ付き韓国製高級柔軟剤。酸性処方（pH 3～5）のため、アルカリ性洗剤とは異なるESCR（環境負荷低減）対策が必要です。IBM製精密ポンプネックは、韓国の自動充填ラインにおける韓国製28/410ポンプの取り付けに不可欠です。

ベビー用洗濯物

500～700ml・38/400注ぎ口またはポンプ

韓国製低刺激性ベビー用洗濯洗剤 ― 最高の外観と純度基準を満たしています。ゼロフラッシュIBMベースが必須（トリムHDPE粒子による汚染リスクなし）。韓国エコマーク認証および韓国MSDSフリー成分認証パッケージ。

MIレンジ

0.5～1.0

食器用洗剤のESCRグレードと同じ - 界面活性剤のESCR耐性を高めるための高分子量

密度

0.955–0.962

g/cm³ — 大型洗濯用ボトルでは、食器用洗剤の硬度範囲よりもやや高い。

抗酸化タイプ

立体障害フェノール

pH9.0以上の韓国製洗濯洗剤用加水分解安定性酸化防止剤 ― 韓国のHDPE供給業者に確認してください

ESCR F50ターゲット

200時間以上

ASTM D1693 10% Igepal を 23℃ で使用した場合 - 韓国製洗濯用品の小売保管期間 24 か月の最低条件

より大きなプリフォームショット重量 - ZQ110が必要

A 600 ml HDPE laundry detergent container at 0.75 mm average wall weighs approximately 24–28 g. At 6 cavities on ZQ110: 6 × 26g = 156g shot weight — within ZQ110’s 500g rated shot weight with comfortable headroom. The same 6-cavity 600 ml mould on ZQ80 (250g shot weight limit): 156g = 62% of ZQ80 limit — feasible but leaves limited margin for larger format or heavier wall targets. Korea Ever-Power recommends ZQ110 for 6-cavity 600 ml detergent to preserve shot weight headroom for future wall thickness adjustments without machine change.

より長いブロードウェル - 600～800mlのワイドボディ径

韓国製洗濯用IBM 600 ml (本体外径約75 mm) のブロー保持時間は 2.0～2.8 秒であるのに対し、食器用洗剤 300 ml (本体外径約62 mm) では 1.4～2.0 秒である。本体が広いほどブロー成形金型と接触する壁面の総面積が大きくなるため、容器がステーション 3 で歪みなく剥離できるほど十分に固まるのに時間がかかる。ブロー成形金型の冷却水温度を 22 ℃ から 14 ℃ に下げると、600 ml でのブロー保持時間が約 0.3～0.4 秒短縮される。これは、底面の平坦度 (金型温度が低いほど、底面領域の固化は速くなるが均一性は低下する) を ±0.3 mm の平坦度基準に対して検証する必要がある有用な最適化である。

38/400 ネックインジェクションゲートバランス - 28/410 と比較してゲート幅が広い

韓国の洗濯洗剤用 38/400 の注ぎ口は、食器用洗剤用 28/410 よりもネックの内径が広くなっています。内径が大きいため、ホットランナーのゲート先端に広い射出ゲートを設けることができ、射出充填時間を短縮できます (ゲートのせん断速度が低いため、38/400 では 28/410 に比べて +0.1 秒)。ただし、ネックの断面が広いため、充填するにはわずかに高い保持圧力が必要になります。韓国の Ever-Power は、各ネックサイズに合わせてホットランナー先端の射出ゲート径を調整し、すべてのキャビティで充填の均一性を最適化しています。同じ ZQ マシンでは、洗濯洗剤 IBM の 38/400 ゲート径は、食器用洗剤 IBM の 28/410 ゲート径よりも通常 0.1～0.2 mm 大きくなっています。

Q01

HDPE製IBMコンテナの選定において、アルカリ性洗剤ESCRと食器用洗剤界面活性剤ESCRはどのように異なるのでしょうか？

Alkaline laundry detergent produces HDPE container failure through two mechanisms simultaneously, while dish soap produces failure through one. The first mechanism — surfactant ESCR — operates identically in both: anionic surfactants (LAS, SLES) at 10–25% concentration penetrate HDPE crystal boundaries, reduce crack propagation surface energy and enable stress crack initiation at moulding residual stress zones. This is the mechanism addressed by selecting low-MI high-molecular-weight HDPE (MI 0.5–1.0) and is common to both dish soap and laundry detergent IBM. The second mechanism — alkaline antioxidant hydrolysis — is specific to laundry detergent at pH 8.5–10.5 and absent at dish soap pH 7–9. At pH above 8.0, hydroxide ions saponify ester-based antioxidant molecules at the HDPE surface — specifically fatty acid ester antioxidants like Irganox 1010 (pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate)). Loss of antioxidant protection in the HDPE surface zone reduces oxidative stability and allows chain scission at stress concentration points, producing surface embrittlement and whitening over 12–24 months of Korean ambient storage. The solution is to specify HDPE with a hindered phenol antioxidant that does not contain labile ester bonds at the phenol ring — grades using secondary antioxidants based on thiodipropionic acid diesters (DSTDP, DLTDP) provide better alkaline pH stability than primary antioxidant-only packages. In practical Korean HDPE procurement: Korean HDPE suppliers targeting HDPE for laundry detergent blow moulding explicitly note “suitable for alkaline detergent” on their technical data sheets — use only these grades for Korean laundry detergent IBM at pH above 9.0. Grades suitable for dish soap (pH 7–9) are not automatically qualified for alkaline laundry detergent (pH 9–10.5) without antioxidant package verification.

Q02

韓国の洗剤の洗浄液濃度測定基準にはどのようなものが用いられており、それらは500～600mlにおけるZQの空洞数にどのような影響を与えるのか？

Korean laundry detergent IBM uses two primary neck standards: 38/400 (pour cap) for liquid laundry detergent and 28/410 (pump) for fabric softener. The 38/400 neck OD is 38.0 mm nominal — approximately 10 mm wider than the 28/410 dish soap neck at 28.0 mm. This wider neck has a significant impact on ZQ machine platen cavity count for large-format laundry detergent IBM. For a 600 ml HDPE laundry detergent container with body OD ~75 mm: the 38/400 neck zone itself occupies a 45–48 mm footprint in the IBM injection mould cavity (neck OD + required neck insert steel around the thread = 38.0 + 5–7 mm each side). On the ZQ110 turret platen (diameter approximately 520 mm usable radius), a linear arrangement of 38/400 neck cavities at ~80 mm pitch allows 6 cavities maximum in a 2-row arrangement — versus 8 cavities for the same 600 ml body OD with 28/410 neck. The 38/400 neck’s wider steel requirement around the neck insert is therefore the binding platen constraint for large Korean laundry detergent at 500–800 ml, overriding the body OD constraint. Korea Ever-Power provides the cavity layout drawing for each container+neck+machine combination at the enquiry stage — the platen layout calculation for 38/400 laundry detergent IBM is routinely done for ZQ80, ZQ110 and ZQ135 to confirm achievable cavity count before project commitment. Practical recommendation: for Korean 600 ml 38/400 laundry detergent IBM at ZQ110, plan for 6 cavities as the realistic maximum and verify with Korea Ever-Power’s platen layout service before mould investment.

Q03

IBMは、商業的に実現可能な個数で1リットル入りの洗濯洗剤容器を製造できるだろうか？

IBM can produce 1-litre laundry detergent containers but at cavity counts (2–4 cavities on ZQ135) that limit annual output to approximately 12–18M units/year at 2-shift Korean operation — borderline for Korean national brand flagship SKU volumes. The constraints that limit 1-litre IBM cavity count are the intersection of three factors at 1 L container size. First, platen size: a 1-litre HDPE laundry container body OD is approximately 88–95 mm — at 80–90 mm pitch spacing between cavity centres, the ZQ135’s platen (largest Korea Ever-Power model) accommodates a maximum of 4 cavities in a 2×2 arrangement. Second, shot weight: 1-litre HDPE at 0.8 mm average wall = approximately 50–60 g per container; 4 cavities × 55 g = 220 g total shot weight — below ZQ135’s 750g limit with headroom, but approaching ZQ110’s 500g limit at 4 cavities. Third, blow dwell: 1-litre body OD at 90 mm requires blow dwell of 3.0–4.0 s for adequate base zone solidification — producing a total cycle time of 6.5–8.0 s, significantly longer than 500 ml (5.0–5.5 s). At 4 cavities, 7.0-second cycle, ZQ135: 4 × (3600÷7.0) × 0.88 × 3,500 hr = ~6.4M units/year. For Korean 1-litre laundry at volumes above 15M/year, EBM with handle is the correct commercial decision — IBM 1-litre handleless is economically viable only for Korean premium concentrated 1-litre formats where the per-unit IBM quality premium (precision neck, no body parting line) justifies the lower production rate.

Q04

韓国製のベビー用洗濯洗剤容器の仕様が、一般的な洗剤容器の仕様よりも厳しいのはなぜですか？

Korean baby laundry IBM container specifications are stricter than standard Korean detergent IBM across five dimensions. First, zero flash: standard Korean laundry detergent may accept EBM containers at value channel price points, but Korean baby laundry brand QA policies consistently specify IBM to eliminate the EBM trim particle contamination risk — no Korean baby product brand has accepted EBM primary containers at any Korean channel since the 2021 Korean consumer plasticiser contamination scare in baby products. Second, HDPE food contact material certification: Korean baby laundry brands specify the container HDPE as food-contact grade with full Korean MFDS positive list additive documentation — the same documentation level as Korean food packaging IBM, not just Korean household chemical IBM. Third, additive restriction: Korean baby laundry brands restrict HDPE masterbatch colourant to food-grade pigments only (no industrial dye colourants), and restrict UV stabilisers to food-contact-listed grades — stricter than adult laundry brands which use industrial-grade colour and UV packages. Fourth, colour consistency: Korean baby laundry brands typically specify white or light pastel container colours (white, pale blue, pale green) with Delta E ≤ 1.5 across Korean production batches — achieved by IBM’s closed-loop masterbatch dosing, not by commodity hand-dosing used in lower-specification EBM household laundry production. Fifth, container certification documentation: Korean baby laundry IBM containers require a container specification sheet (signed by Korea Ever-Power applications engineering) confirming HDPE grade, additive package, production process (IBM, zero trim) and dimensional compliance — a documentation package that Korean adult laundry contracts do not require. This five-point stricter specification set is standard Korea Ever-Power pre-delivery documentation for Korean baby laundry IBM projects and is included in Korea Ever-Power’s Korean baby laundry container qualification package without additional documentation charge.

Q05

韓国製の柔軟剤の配合化学は、洗濯洗剤と比較して、IBMの容器材料の選択にどのような影響を与えるのでしょうか？

Korean fabric softener and Korean laundry detergent present different chemical environments for HDPE IBM containers — primarily because fabric softener is acidic (pH 3–5) while laundry detergent is alkaline (pH 8.5–10.5), and because fabric softener uses cationic surfactants while laundry detergent uses anionic surfactants. These chemistry differences produce three material selection implications for Korean fabric softener IBM versus Korean laundry detergent IBM. First, antioxidant package: at acidic pH 3–5, Korean fabric softener does not cause alkaline antioxidant saponification — the ester-based antioxidant packages that must be avoided for alkaline laundry detergent (Irganox 1010 in alkaline environment) are perfectly stable in fabric softener at pH 3–5. Standard HDPE antioxidant packages (Irganox 1010 or 1076) are acceptable for Korean fabric softener IBM without pH-specific antioxidant selection. Second, ESCR from cationic surfactants: cationic surfactants (quaternary ammonium compounds DSDMAC, DEQA at 5–15% in Korean fabric softener) have lower HDPE ESCR aggressiveness than anionic LAS at equivalent concentration — because the cationic surfactant’s positive charge is partially repelled by HDPE’s non-polar surface, reducing interfacial penetration. Korean fabric softener IBM at 10% DSDMAC produces F50 ESCR failures at longer timeframes than Korean dish soap at 20% LAS — allowing slightly higher MI HDPE (MI up to 2.0) while maintaining acceptable ESCR for 24-month Korean fabric softener shelf life. Third, container appearance in the Korean context: Korean fabric softener containers (premium pricing, Korean premium personal care channel) are marketed on appearance. IBM’s zero body parting line and consistent surface finish are particularly important for Korean fabric softener because Korean premium brands use transparent or translucent sleeve labels (from which the HDPE container surface is partially visible) — an EBM body parting line showing through a transparent Korean fabric softener sleeve label is a Korean brand acceptance rejection reason regardless of the functional ESCR compliance of the container.

Q06

What are the Korean measure-pour cap sealing requirements that make IBM’s neck precision commercially critical for laundry detergent?

Korean liquid laundry detergent is dispensed using a measure-pour cap — a cap with an integrated dosing chamber (typically 40–100 ml) that the Korean consumer fills by inverting the bottle, then pours into the Korean washing machine drum. The measure-pour cap’s dosing chamber is sealed against the bottle neck by an internal elastomeric sealing ring that contacts the neck’s sealing land (the flat annular surface at the neck’s top edge). For leak-free performance, this elastomeric seal must contact the sealing land uniformly around the full 360° neck circumference — a sealing condition that requires the sealing land to be flat (≤ 0.05 mm deviation from plane) and the neck OD to be within the cap manufacturer’s specified engagement range (typically nominal ±0.08–0.10 mm). IBM’s injection-moulded 38/400 neck achieves both: sealing land flatness ≤ 0.03 mm (controlled by the injection mould’s neck insert machining tolerance of ±0.01 mm) and neck OD ±0.05 mm across all production cavities. EBM’s 38/400 neck produced by blow pressure action has a sealing land flatness of 0.05–0.20 mm (variable with blow pressure and parison distribution cycle-to-cycle) and neck OD of ±0.20–0.35 mm — frequently outside the measure-pour cap sealing engagement range on a fraction of production containers. The commercial consequence of a Korean measure-pour cap sealing failure is significant: Korean liquid laundry detergent leaking from a loose measure-pour cap at Korean retail produces a Korean product contamination event (laundry detergent dripping onto Korean pharmacy or hypermarket shelf), a Korean brand quality non-conformance report from the Korean retailer, and a customer complaint rate that triggers Korean brand internal quality investigation. Korea Ever-Power documents 38/400 neck sealing land flatness and OD values in the pre-delivery production trial dimensional report for each Korean laundry detergent IBM project — confirming that all production cavities meet the Korean measure-pour cap manufacturer’s sealing engagement specification before Korean brand approval is issued.