Single-Dose Packaging & Formulation Engineering Lexicon
Single-Dose Cosmetic & Oral Care OEM Engineering Glossary (30+ Terms)
A factual engineering reference covering barrier polymers, seal peel-force mechanics, anhydrous softgel encapsulation, hydrogel cross-linking, and global cosmetic regulatory frameworks.
Why Barrier & Seal Physics Matter in Single-Dose OEM: Unlike rigid 250 mL bottles, unit-dose formats have a high surface-area-to-volume ratio. Controlling Oxygen Transmission Rate (
OTR < 0.5 cm³/m²·d), Water Vapor Transmission Rate (WVTR < 0.8 g/m²·d), and peelable heat-seal force (4.0–8.0 N/15mm) prevents active oxidation, moisture loss, and transit leakage during air cargo decompression.
| Engineering Term | Standard / Unit | Technical Definition & Yanmei Production Standard |
|---|---|---|
| PP / EVOH / PP Co-Extrusion | 7-Layer Barrier Cup | Multi-layer thermoformed cup combining polypropylene moisture resistance with an Ethylene Vinyl Alcohol (EVOH) gas-barrier core for 10–15 mL mouthwash pods and 3–15 g clay/hair mask pods. |
| OTR (Oxygen Transmission Rate) | cm³ / m² · 24h · 0.1 MPa | Steady-state rate at which oxygen permeates a film or capsule shell. Yanmei EVOH cups and plant-starch capsules maintain OTR < 0.5 to protect Retinol, L-Ascorbic Acid, and essential oils. |
| WVTR (Water Vapor Transmission Rate) | g / m² · 24h (38°C, 90% RH) | Rate of moisture vapor permeation across a barrier. Critical for preventing hydrogel eye mask dehydration and keeping anhydrous serum capsules crisp in humid climates. |
| Peelable Heat-Seal Force | 4.0 – 8.0 N / 15mm (ASTM F88) | Calibrated lidding foil seal strength that withstands -0.06 MPa air-freight vacuum without leaking while peeling cleanly with zero splashback when opened by the consumer. |
| ASTM D3078 Vacuum Decay Leak Test | -0.06 MPa for 3 min | Submerged vacuum chamber batch test verifying zero micro-channel leaks across thermoformed mouthwash cups, beauty pods, and hydrogel foil sachets. |
| Plant-Starch / Carrageenan Softgel | 100% Animal-Free Shell | Non-bovine, biodegradable twist-off capsule matrix engineered from modified tapioca/corn starch, seaweed carrageenan, glycerin, and purified water. Resists thermal cross-linking up to 45°C. |
| Water Activity (aw) Control | aw < 0.30 (Anhydrous Fill) | Free water threshold required inside serum capsule fills so the hydrophilic softgel shell does not soften, dissolve, or leak during 24-month shelf storage. |
| Glucomannan / Carrageenan Hydrogel | 4.0 g – 8.0 g / pair | Thermo-reversible plant polysaccharide gel network holding >85% aqueous essence with zero non-woven backing, delivering a 3.2°C skin-cooling effect and non-slip grip. |
| V-Snap Break-to-Use Card Pack | 1.0 mL – 5.0 mL | Rigid thermoformed PVC/EVOH/PE blister laminated to printed paperboard with a precision-scored V-channel; snaps open with one hand to dispense serums or lotions cleanly. |
| CPC (Cetylpyridinium Chloride) | 0.05% – 0.075% w/w | Quaternary ammonium antiseptic used in alcohol-free single-serve mouthwash pods to reduce oral biofilm and volatile sulfur compounds without mucosal burn. |
| Nano-Hydroxyapatite (n-HAp) | 0.5% – 2.0% w/w | Biomimetic calcium phosphate mineral used in enamel-remineralizing mouthwash pods as a fluoride-free or fluoride-synergistic active. |
| US FDA MoCRA | Modernization of Cosmetics Regulation Act | US federal framework requiring facility registration, cosmetic product listing, adverse event reporting, and safety substantiation dossiers. |
| EU CPNP & UK SCPN / CPSR Part A & B | EC No 1223/2009 | Mandatory pre-market notification portals and Cosmetic Product Safety Report (Toxicological Profile Part A + Safety Assessor Sign-Off Part B) for EU27 and UK retail entry. |
| GCC SFDA eCosma & Dubai Montaji | GSO 1943 / GSO 2528 | Saudi Arabia and UAE cosmetic registration systems requiring alcohol-free/Halal declarations, heavy-metal COA limits, and Arabic/English bilingual INCI labeling. |