Glass bottle production process
Crafted with Care, Sustained by Nature: Every Glass Bottle Born from 80% Recycled Brilliance, Fired by Innovation, and Cooled with Responsibility.
Raw Material Preparation
Ingredients: Primarily silica sand (SiO₂, ~70%), soda ash (Na₂CO₃, ~15%), limestone (CaCO₃, ~10%), and recycled glass cullet (crushed waste glass).
Mixing: Ingredients are precisely weighed and blended to ensure uniformity.
Melting in Furnace
The mixture is fed into a gas- or electric-fired furnace at ~1,500–1,600°C, forming molten glass.
Recycled cullet lowers melting energy and reduces environmental impact.
Forming
Blow-and-Blow Method (Common for narrow-neck bottles):
Molten glass is cut into “gobs” and dropped into molds.
Compressed air shapes the neck, then additional air expands the body.
Press-and-Blow Method (Wide-mouth containers):
A plunger presses the gob into a mold to form the shape, followed by air blowing.
Annealing
Bottles pass through an annealing lehr (oven) at 500–600°C, gradually cooling to room temperature.
Removes internal stresses to prevent cracking.
Surface Treatment & Coating
Hot-End Coating: A thin layer of tin or titanium oxide is applied for durability.
Cold-End Coating: A lubricant (e.g., polyethylene) is sprayed to reduce scratches.
Quality Inspection & Packaging & Shipping
Automated systems check for defects (e.g., cracks, bubbles, uneven thickness).
Pressure tests ensure leak-proof performance.
Bottles are sorted, packed, and prepared for distribution.
Comprehensive analysis of glass bottle deep processing methods
Types of glass bottles provided by springbottles
| Type of Cosmetic Bottle | Common Materials | Key Features | Typical Uses |
|---|---|---|---|
| Lotion/Serum Bottles | Glass (soda-lime, borosilicate), PET/PETG | UV-resistant, premium feel, chemical inertness. PET is lightweight and shatterproof. | Facial serums, body lotions, toners |
| Essence Dropper Bottles | Amber/cobalt glass, PETG | Dark glass protects light-sensitive ingredients; dropper ensures precise dosing. | Essential oils, vitamin C serums, concentrates |
| Perfume/ Cologne Bottles | Glass (crystal, colored), acrylic | Aesthetic designs, airtight to preserve fragrance; acrylic for budget-friendly options. | Luxury perfumes, EDT/EDP sprays |
| Cream/Jar Containers | PP (polypropylene), glass, ceramic | PP is lightweight and airtight; glass/ceramic offers luxe appeal (e.g., skincare creams). | Moisturizers, night creams, balms |
| Mist/Spray Bottles | PET, aluminum, glass | Fine-mist nozzles; aluminum for portable durability, glass for premium toners. | Facial mists, setting sprays, hair sprays |
| Airless Pump Bottles | PP, ABS plastic, glass | Hygienic, preserves oxygen-sensitive formulas; pumps dispense precise amounts. | Anti-aging serums, sunscreens, foundations |
| Squeeze Tubes | LDPE, aluminum | Flexible, travel-friendly; aluminum tubes block air/light (e.g., for retinols). | Cleansers, spot treatments, masks |
| Nail Polish Bottles | Glass, PETG | Small brush-integrated necks; glass resizes solvent corrosion. | Nail polishes, gel coatings |
| Roll-On Bottles | PP, glass, stainless steel | Portable, mess-free application; steel balls cool the skin (e.g., essential oil roll-ons). | Essential oil blends, under-eye serums |
| Travel-Size Bottles | PET, LDPE, silicone | Compact, leak-proof; silicone for squeeze convenience (TSA-compliant sizes). | Mini shampoos, conditioners, lotions |