As a solution provider in the field of wine bottle manufacturing, we have launched the silk neck round shoulder and flat shoulder slim bottle for the high-end spirits/wine market. The following is a technical analysis from the dimensions of structural mechanics, production process and user experience:
1. Precision Threaded Neck System
Material suitability: Borosilicate glass (coefficient of thermal expansion 3.3×10-⁶/°C) is used to ensure that the threads and the metal cap fit tightly under the temperature difference of -20℃~80℃.
Thread parameters: 30mm standard caliber, 4 continuous threads (pitch 2.5mm, lead 10mm), tighten the number of turns in 1.2-1.5 turns, to achieve fast sealing and opening.
Optimization of pouring: 15° infusion angle design on the inner wall of the bottle mouth, together with the structure of round shoulder/flat shoulder, the amount of residual liquid hanging on the wall is ≤0.8ml (GB/T 24694 requires ≤1.2ml).
2. Round shoulder/flat shoulder dual version structure
Parameter Round shoulder version Flat shoulder version
Shoulder angle 160° continuous gradual curved surface 92° right-angled fold transition
Scenario Whisky / Brandy (slow flow) White Wine / Vodka (fast flow)
Grip center of gravity Center of gravity 12 mm down Vertical centerline symmetry
Impact resistance value 8.5J (JIS Z0202 standard) 9.2J (JIS Z0202 standard)
3. Slim streamline bottle design
Golden ratio: diameter 68mm x height 318mm, aspect ratio 4.68:1, visually slimming 30% while maintaining 750ml effective capacity.
Stress control: in-mold cooling process, bottle stress value ≤ 4nm/mm (ISO 7458 standard), reducing the risk of bottle breakage by 47%.
Optical enhancement: high-transparency glass (iron content ≤ 0.02%) superimposed on lead-free crystal glaze, refractive index increased to 1.52, wine color saturation increased by 18%.
4. Professional Adaptation and Customization Service
Capping compatibility: Adaptable to ABM-30 aluminum composite cap, wood plug, ceramic plug and other mainstream sealing methods.
In-depth customization item:
✓ Enhanced coating of bottle shoulder (anti-abrasion grade up to H-3)
✓ Gradient / vertical pattern / ice flower surface treatment (need to open mold)
✓ Bottle bottom 3D embossing (minimum line width 0.3mm)
