CRCファーマシューティカルIBM：
チャイルドレジスタント コンテナガイド

ステップ1 - 押し下げる

The Korean patient or pharmacist presses the CRC cap downward, compressing the cap skirt’s spring ratchet teeth over the HDPE neck bead. The engagement bead OD determines the interference force: if bead OD is too wide, the required push-down force exceeds Korean elderly patient capability (adult accessibility failure). If bead OD is too narrow, ratchet teeth cannot compress adequately and CRC function is lost.

ステップ2 - 押しながら回す

下向きの圧力を維持したまま、キャップを回転（通常30～45°）させて、ラチェットの歯をボトルネックのねじ込み開始位置に合わせます。ねじの外径±0.05mmのIBM公差により、ねじ込み開始位置が設計上の噛み合い点から1～2°以内に収まるため、ねじ山が交差して固着し、回転力が仕様を超えて成人のアクセシビリティテストに不合格となることを防ぎます。

ステップ3 — リリースと検証

Cap released — the spring ratchet re-engages the retention bead, locking the cap in the open position (child cannot re-close) or in the closed thread engagement position (product sealed). IBM neck geometry ensures consistent ratchet engagement depth across all production cavities: bead height ±0.05 mm, bead profile radius ±0.03 mm — both produced by the injection mould neck insert and verified in Korea Ever-Power’s pre-delivery production trial.

ビーズOD IBM

±0.05 mm

ISO 8317 ウィンドウ

±0.06 mm

EBM耐性

±0.15～0.25 mm

プロセスマージン

+0.01 mm IBM

テストパラメータ

児童パネル（42～51ヶ月）

成人パネル（50～70歳）

パネルサイズ

200人の子供

成人200名（50～70歳）

期限

10分

5分（再閉鎖テストを含む）

合格基準

≤ 20% 子供たちがオープン

≥ 85% 大人のオープン

IBMネックODインパクト

ビーズの外径が大きい → 干渉が大きい → 開けにくい → 子供が開けにくい ✓ だが大人は開けられない ✗

ビーズ外径が小さい → 干渉が少ない → 大人が簡単にアクセスできる ✓ しかし、子供の抵抗力が不十分 ✗

IBMの優位性

IBMの±0.05mmのビード外径により、すべての製造容器は±0.06mmの許容範囲内に収まり、両方の基準を同時に満たします。つまり、子供が開けにくい（開けにくい）状態にも、大人が開けにくい（開けにくい）状態にも陥ることはありません。

ビーズOD

公称値 ±0.01 mm

金型キャビティ（HDPE収縮補正適用済み）

ビーズの高さ

0.8～1.5 mm

公称ネック外径を超えるシリンダー - 韓国CRCキャップサプライヤー固有の仕様

ビードプロファイル半径

R 0.3～0.6 mm

CRCラチェット歯のかみ合いをスムーズにする導入部 ― 鋭い半径はかみ合い音と力を増加させる

ビードの軸方向位置

±0.20 mm

ネックシーリング面から、CRCキャップの閉位置の軸方向位置を決定します。

CRCビーズOD

土地の平坦化を封じる

ネジ外径

±0.05 mm

CRCプッシュアンドターン機能 - ラチェット噛み合い干渉が韓国ISO 8317規格の範囲内

±0.10 mm TIR

誘導箔による気密接合 ― 14箇所すべてのキャビティにおいて、箔とHDPEシーリングランドが完全に周囲接触している。

±0.05 mm

CRC thread engagement — Korean pharmacist’s twist-off overcap engagement after induction seal broken

Q01

なぜIBMは韓国の医薬品CRC容器にとって唯一実現可能なブロー成形プロセスなのか？

IBM is the only viable blow molding process for Korean pharmaceutical CRC containers because the Korean KS M ISO 8317 CRC engagement bead OD tolerance requirement (±0.06 mm) falls within IBM’s native process capability (±0.05 mm) but exceeds EBM’s achievable tolerance (±0.15–0.25 mm) by 2.5–4× at best. This is not a marginal difference that secondary neck processing can bridge: EBM neck reaming operations have their own dimensional variation (typically ±0.08–0.12 mm reaming tolerance) that equals or exceeds the entire ±0.06 mm ISO 8317 engagement window. Even if individual EBM containers are reamed to within ±0.06 mm of bead OD nominal, the reaming operation’s inter-cycle variation causes some fraction of the production lot to be outside the window at each end of the tolerance — and Korean KS M ISO 8317 human panel tests all 200 adult and 200 child subjects with the same container type, so any systematic OD variation across the production lot (which EBM + reaming produces) will generate a proportion of containers that either fail child resistance (too wide) or fail adult accessibility (too narrow). IBM eliminates this problem structurally: the IBM injection mould neck insert produces all cavities at nominal ±0.05 mm with no secondary processing, no inter-cycle reaming variation, and no process chain in which a secondary operation can introduce dimensional outliers. This structural advantage is why Korean pharmaceutical regulatory bodies accept IBM CRC containers on the basis of IBM machine and mould qualification dimensional documentation alone, without requiring secondary processing verification — a simplification that EBM + reaming cannot achieve.

Q02

韓国のCRC製薬会社が製造するIBM製容器が、成人向けアクセシビリティテストに不合格となる原因は何ですか？

Korean CRC pharmaceutical IBM container adult accessibility failures — where more than 15% of the 200 adult test subjects (aged 50–70) cannot open the container within 5 minutes — trace to three causes from the IBM container side. First, bead OD above specification upper limit: a bead OD higher than nominal + 0.05 mm increases the CRC cap’s push-down engagement force beyond the elderly Korean adult’s hand grip and push-down capability — the container is effectively too child-resistant to pass adult accessibility. Diagnostic: measure bead OD from all cavities with bead OD near or above the specification upper limit. Root cause: injection mould neck insert bead OD above nominal (requires insert re-measurement and possible re-machining); or HDPE shrinkage below expected (occurs when mould temperature is lower than qualified baseline, producing less crystallisation and therefore less shrinkage, and a larger bead OD than shrinkage compensation predicted — increase mould neck zone cooling to intended setpoint). Second, bead profile radius too sharp: an angular bead profile (radius < 0.3 mm) produces a step function in the CRC cap engagement force — the force required spikes sharply as the cap ratchet engages the bead, rather than building gradually, making the engagement feel sudden and resistant. IBM bead profile radius should be R 0.3–0.6 mm as specified in Section 4. Third, HDPE creep enlargement of effective bead OD: if the HDPE IBM container has been stored at elevated temperature before ISO 8317 testing (above 30°C for extended periods), the bead can creep outward under the sustained engagement force from a previously applied CRC cap, effectively widening the bead OD above nominal. Korean pharmaceutical brands should specify that IBM containers used for ISO 8317 testing have not been subjected to temperatures above 25°C after production, and should conduct ISO 8317 testing within 90 days of IBM production to avoid thermally induced bead OD drift in the test sample population.

Q03

Does the CRC engagement bead OD need to be specified separately from the Korean CRC cap supplier’s drawing, or does the IBM mould follow the cap supplier’s nominal?

The IBM container engagement bead OD must be specified separately from the Korean CRC cap supplier’s engagement drawing nominal — it cannot simply follow the cap nominal without accounting for the engagement system’s designed interference fit. The push-and-turn CRC mechanism functions by the CRC cap’s retention ratchet engaging the bottle neck bead with a designed interference: the cap’s ratchet engagement diameter is intentionally smaller than the bead OD nominal by the designed interference amount (typically 0.10–0.20 mm, specified by the Korean CRC cap manufacturer). If the IBM container bead OD equals the CRC cap’s engagement ratchet nominal — without the designed interference — the ratchet slides over the bead without snapping engagement, producing a container that passes adult accessibility (easily opened) but fails child resistance (children can also open it trivially). The correct IBM bead OD specification is: Korean CRC cap supplier’s engagement ratchet nominal + designed interference (from the CRC cap supplier’s mating component drawing) = IBM container bead OD nominal, with ±0.05 mm IBM tolerance applied. Korea Ever-Power requires the Korean pharmaceutical brand to provide the Korean CRC cap supplier’s engagement drawing before IBM neck insert CNC machining — the bead OD nominal dimension machined into the neck insert is derived from the CRC cap drawing, not from a generic pharmaceutical IBM standard. Without this cap supplier drawing, the IBM mould neck insert cannot be correctly dimensioned, and ISO 8317 testing failure is likely on the first submission.

Q04

同じZQマシンで、CRC形式と非CRC形式の両方の医薬品IBMフォーマットを実行できますか？

Yes — the same ZQ series machine can run CRC and non-CRC pharmaceutical IBM formats using different mould sets, with each mould set’s production recipe stored in the ZQ control system and recalled by the operator during mould change. A ZQ80 that runs a 14-cavity 60 ml CRC paediatric syrup mould set (HDPE MI 0.6, hold pressure 70%, neck cooling 13°C) can also run a 20-cavity 10 ml ophthalmic mould set (HDPE MI 0.4, hold pressure 60%, neck cooling 15°C) after a mould change and recipe recall — the machine hardware does not change between formats. The Korean KFDA pharmaceutical container qualification, however, is container-specific: the 60 ml CRC mould set and the 10 ml ophthalmic mould set each require their own separate container technical files with their own cavity-by-cavity dimensional reports — both produced at the same ZQ80 machine serial number but from different mould sets. Korean pharmaceutical IBM producers should identify both mould sets in the machine’s qualification documentation — recording both mould serial numbers against the single ZQ80 machine serial number in their Korean GMP production master file — to support the audit trail for Korean MFDS GMP inspections of multi-format pharmaceutical IBM production on the same machine.

Q05

IBMのエンゲージメントビーズの外径は、韓国Ever-Power社製金型の納入後、韓国食品医薬品安全庁（KFDA）の認証申請前にどのように検証されますか？

IBM engagement bead OD verification for Korean KFDA CRC qualification uses a specific measurement protocol that differs from standard pharmaceutical neck OD measurement. Standard pharmaceutical neck OD measurement uses a contact digital caliper or laser OD gauge measuring the neck’s largest diameter in a single plane. CRC engagement bead OD measurement requires: (1) Measurement at 4 angular positions around the bead circumference (0°, 90°, 180°, 270°) per container — confirming bead circularity (out-of-roundness ≤ 0.04 mm TIR) as well as bead OD nominal; (2) Measurement at the maximum bead diameter point (the bead’s highest point above the neck cylinder) — using a step-gauge contact probe rather than a caliper, because caliper jaws that span the full neck diameter measure the neck OD average rather than the bead OD maximum; (3) Statistical analysis: 30 measurements per cavity (120 measurement readings per cavity for the 4-angular-position protocol) across all production cavities, with Cpk ≥ 1.33 confirmation for bead OD at the specification of nominal ±0.05 mm. Korea Ever-Power uses a dedicated bead OD step-gauge contact measurement system during the pre-delivery production trial, with data output directly to the cavity-by-cavity bead OD dimensional report format required for Korean pharmaceutical container technical file submission. This dedicated measurement system is not available at most Korean IBM container producer facilities — Korea Ever-Power provides the pre-delivery bead OD report precisely because this specialised measurement data is typically not reproducible at the Korean customer’s production facility without Korea Ever-Power’s measurement tooling support.

Q06

What happens to Korean CRC pharmaceutical IBM container child resistance over the product’s 24-month shelf life?

Korean CRC pharmaceutical IBM container child resistance changes over the 24-month Korean shelf life through two mechanisms: HDPE engagement bead OD drift and CRC cap spring ratchet fatigue. IBM container-side bead OD drift: HDPE crystallisation continues slowly at ambient Korean storage temperatures (15–25°C retail pharmacy storage, 10–30°C Korean household storage) for approximately 6–12 months after production — during this period, the bead OD typically decreases slightly (0.01–0.03 mm) due to continuing crystalline-phase densification. This OD decrease slightly increases the CRC engagement interference, making the container marginally more child-resistant at 6–12 months versus at production — a generally conservative change for Korean KFDA compliance purposes. After 12 months, HDPE crystallisation is complete and bead OD is dimensionally stable for the remainder of the 24-month shelf life under normal Korean pharmaceutical storage conditions. CRC cap spring ratchet fatigue (a cap-side issue rather than IBM container-side): the CRC cap’s polypropylene spring ratchet teeth lose approximately 8–15% of their elastic modulus over 24 months at 20–25°C Korean storage — slightly reducing the push-down force required to depress the ratchet over the bead and potentially increasing the proportion of Korean adult test subjects who could open the container in the ISO 8317 re-test at 24 months. Korean pharmaceutical brands who specify CRC containers for 24-month Korean shelf life should verify with their Korean CRC cap supplier that the cap’s spring ratchet fatigue data (elastic modulus retention at 24 months at Korean storage conditions) supports continued ISO 8317 adult accessibility and child resistance compliance through shelf life — the IBM container’s bead OD stability is not the limiting factor; the cap’s material performance is.