Description

Technical Parameters

Cosmetic Bamboo Glass Jars: Sealing Precision & Hygienic Barrier Options

A frosted glass jar with a bamboo lid is three separable parts, and quoting them as one item is how specification errors happen.

Component	Material	What it does
Jar body	Thick-walled soda-lime glass, frosted outside	Holds the formula. Inert, heavy, non-porous. This is the part your compatibility testing is about - and for creams it is usually an easy pass
Bamboo lid	Turned bamboo, CNC machined to fit the jar mouth	Visual and tactile closure. Carries the sustainability story and most of the perceived value
Seal	PE foam or silicone gasket inside the lid; optional PP inner disc	Keeps the cream in the jar and the lid underside clean. Remove the gasket for washing; it is replaceable

Optimize your skincare cream packaging with our separated bamboo-lid glass jars. Leak-proof transit relies on an engineered internal gasket matched to your filling line's capping torque settings to prevent formula weeping.

To eliminate product migration into lid crevices, we offer an optional PP inner disc beneath the bamboo lid-essential for rich balms and overnight masks to give consumers a clean, hygienic surface.

Decoration operates independently: print on the frosted glass bottle while leaving the natural bamboo lid plain for an elegant, uncluttered finish.

Frosted glass jars with bamboo lids in 5ml to 100ml sizes

Product Parameters

S/N	Volume	Colour	Size Dia × H (mm)	Weight (g/pc)	Packing
1	5ml	Clear / Clear Frosted	42.5 × 22.6	40	450 pcs/carton
2	15ml	Clear / Clear Frosted	47 × 37	60	240 pcs/carton
3	30ml	Clear / Clear Frosted	61 × 38	107	105 pcs/carton
4	50ml	Clear / Clear Frosted	61 × 46	130	105 pcs/carton
5	100ml	Clear / Clear Frosted	81 × 48.5	200	105 pcs/carton

Item	Specification
Product name	Frosted glass cosmetic jar with bamboo lid
Jar body	Soda-lime glass, thick-walled, annealed
Finish	Frosted outside (sandblasted), polished rim and interior
Clear version	Same bodies available fully clear - useful if you want a two-finish family
Lid	Natural bamboo (Moso), CNC turned, clear water-based lacquer
Seal	PE foam gasket standard; silicone gasket optional; PP inner disc optional
Logo treatment	Silk-screen printing or baking on glass; laser engraving or hot stamping on bamboo
MOQ	3,000 pcs for stock sizes and finishes; 5,000 pcs for custom colours or new decoration
Lead time	Stock jars ship within 7 days of payment; custom decoration 20–30 days
Samples	Free for stock jars; express freight on the buyer's account via DHL, or your own courier can collect
Loading port	Shanghai
Packing	Jars nested with EPE cell dividers in double-wall export cartons

Notes on reading the table: the weight is the complete unit, jar plus lid, straight off the production line - a number to sanity-check against any quotation that quotes a suspiciously light jar. And the 5ml size exists even though some listings forget to mention it; it is the eye-cream and lip-mask format and it ships in the largest carton count because the jars are small.

How the Jar Is Made

The annealing step deserves a sentence of its own. Glass that cools too fast holds internal stress, and stressed glass fails weeks later - in a carton, on a shelf, in a customer's hands - not at the factory gate. Every batch is annealed to a controlled schedule, and finished jars are checked under polarized light for residual stress before they are approved for decoration.

Step	What happens	What we control
1. Glass forming	Molten soda-lime glass pressed into the jar mould	Wall thickness consistency, base stability
2. Annealing	Controlled cooling in the lehr to relieve internal stress	Stress level - the difference between a jar that survives shipping and one that cracks in the warehouse
3. Frosting	Sandblasting the outside surface	Even satin finish, no cloudy patches
4. Rim finishing	Fire-polishing or grinding the jar mouth	Flat, level rim so the gasket seats properly
5. Bamboo lid	Culm selection, boiling, drying, CNC turning, lacquering	Lid fit to the jar mouth, moisture content
6. Gasket insertion	PE foam or silicone gasket seated in the lid	Seal integrity
7. Assembly and inspection	Lid torqued onto jar, visual check per AQL 2.5	Fit, finish, no chips or checks

The bamboo lids follow the same discipline as our other bamboo packs: three-year-plus Moso culms, boiled to remove sugars, dried to a controlled moisture content before turning, so the lid does not swell onto the jar in a humid summer or loosen in a dry winter.

Qualification Certificate

Certificate

Frosted Glass Jars with Bamboo Lids: Sensory Prestige & Formula Safety

Combine natural luxury with unmatched material stability. The satin-frosted glass surface diffuses light and resists fingerprint smudges-creating pristine visuals for e-commerce pages. Weighing 107 g for a 30 ml pack (nearly 4x the weight of PP plastic), the substantial mass immediately anchors a high-end price point in the consumer's hand.

Organic Aesthetics & Universal Formula Inertness:

Pairing cool frosted glass with warm bamboo closes the visual loop for natural skincare without feeling clinical. Crucially, glass provides 100% chemical inertness-eliminating fragrance absorption, stress cracking, or leaching concerns for rich creams, balms, and clay masks.

Production, inspection and warehousing for frosted glass jar manufacturing

Choosing the Size

Size	Best suited to	Positioning note
5ml	Eye cream, lip mask, cuticle balm, travel/trial sets	The trial-size entry point; pairs with gift sets and sampling programmes
15ml	Eye cream, eye mask, concentrated serum creams	Premium small-format; the size luxury brands lead with
30ml	Day cream, night cream, the core SKU	The default facial cream jar; widest market fit
50ml	Body butter, rich night cream, mask	Same mouth diameter as the 30ml - lids and gaskets are shared, which simplifies filling changeovers
100ml	Body cream, hair mask, clay mask, shared family sizes	The value format; check your filling line's torque for the wider mouth

How to choose in practice:

Lead with the 30ml. It is the size buyers expect a facial cream to come in, and the 15/50ml jars share its lid diameter - a three-SKU line built around it looks coherent and fills efficiently.

The 5ml sells the family. Trial sizes recruit customers; the unit economics are poor on their own and excellent as an add-on to a 30ml or 50ml purchase.

The 100ml is a different animal. Wider mouth, heavier jar, different carton. Order it when you have a body-care or mask SKU that justifies the freight.

Key Benefits for Your Buyers

Benefit	Why it is real for this pack
Premium shelf presence at mid-market cost	Frosted glass plus bamboo reads high-end without metal-collarek pricing
Weight you can feel	40–200 g per unit sets a quality anchor plastic cannot match
Five sizes, one visual family	Shared lid diameters across 30/50ml simplify both filling and shelf logic
No compatibility drama	Glass is inert; creams, balms and masks fill without a testing project
Honest sustainability positioning	Refillable, washable glass with a natural-material lid - no inflated claims
Trial-size option	The 5ml jar supports sampling and gift sets from the same tooling family

Customisation Options

Option	Choices	Notes
Glass finish	Frosted (standard), fully clear, or mixed family	Acid-etch finish available on request for a denser satin
Glass colour	Clear; amber, opal white on request at higher MOQ	Colour glass changes the MOQ and lead time - confirm at quotation
Lid	Natural bamboo; carbonized darker tone on request	Both tones lacquered with clear water-based finish
Logo on glass	Silk-screen printing (1–2 colours), baking colour firing	Baking survives washing and rub better than ink alone
Logo on bamboo	Laser engraving, hot stamping (gold/silver foil)	Engraving is permanent and reads as craft
Inner protection	PP inner disc optional	Recommended for balms and masks; keeps the gasket clean
Gasket	PE foam standard; silicone optional	Silicone for formulations with high oil content
Packing	EPE cell dividers, double-wall cartons; retail-ready boxes on request	Tell us if jars ship direct-to-consumer and we pack for it

Decoration on this pack is chosen by feel as much as by spec. The route we recommend: tell us the brand direction, we send two or three treated samples - printed glass with clean bamboo, engraved bamboo with clean glass - and you choose from what you can hold.

Production and Quality Control

Inspection runs at three points: incoming glass and bamboo, in-line after frosting and turning, and final inspection after assembly - final inspection to AQL 2.5 for visual defects.

The tests that matter for this specific pack:

Test	Condition	Pass criteria
Residual stress	Polarized-light check per batch after annealing	No visible stress patterns at rim and base
Vertical axis deviation	Gauge on jar mouth	Within cosmetic-jar tolerance for gasket seating
Seal test	Jar filled to line, lid torqued, inverted 24 h	No weeping at the gasket line
Lid fit / torque	Torque gauge across the batch	Smooth seating, consistent removal torque
Drop test	1.2 m, three drops, packed carton	No breakage, lids seated
Bamboo moisture	Meter check per dried batch	Within controlled range before turning
Appearance	AQL 2.5 sampling	No chips, checks, cloudy frosting or lid defects

Reports for the shipment can be issued on request. For material compliance we can provide test documentation for the glass, the gasket and the bamboo lid on request - REACH and SVHC screening against the actual component materials.

What This Jar Will Not Do

Ensure supply-chain transparency by understanding the physical boundaries of frosted glass jars. The jar body is soda-lime glass, engineered specifically for cosmetic filling up to 60 °C-not microwave-safe borosilicate. While the internal gasket seals against formula leakage, the outer bamboo lid is not dishwasher-safe and must be removed prior to jar washing.

Frosted Surface Texture & Export Packing Standard:

The satin frosted finish is slightly micro-porous; heavy pigments should be cleaned promptly to prevent faint shadowing in refill programs. Because glass mass drives freight costs, we safeguard shipments with EPE foam dividers and double-wall export cartons, prioritizing zero-breakage security over cheap freight shortcuts.

Products Applications

Product	Recommended size	Why this pack suits it
Face cream (day/night)	30ml or 50ml	The core format; 61 mm mouth suits both filling and fingertip use
Eye cream	5ml or 15ml	Small-format premium; frosted glass suits an active-led story
Sleeping mask / overnight mask	50ml or 100ml	Wide mouth for mask application; bamboo lid signals natural care
Body butter	100ml	Heavier jar suits the product's weight and price point
Lip mask / balm pot	5ml	Gift-set and trial-size workhorse
Clay mask powder	100ml	Glass handles powders and essential-oil-containing blends without issue

Pairing note: this jar sits in our bamboo packaging family alongside the bamboo cream jars, the bamboo-sleeve spray bottle and the bamboo lip balm tubes - finishes match across the lines if ordered together, so a full range reads as one brand on shelf.

FAQ

Q: What is the minimum order quantity?

A: 3,000 pcs for stock sizes with the standard frosted finish and our running lid designs. Custom glass colours, new decoration artwork or non-stock lid tones start at 5,000 pcs. We tell you which bracket applies at quotation, not after payment.

Q: Can we get samples first?

A: Yes. Stock jars ship free, with express freight on your account - DHL as default, or your own courier can collect from our office. Most buyers order a sample set covering the 5ml, 30ml and 100ml jars to judge the family on a desk before committing.

Q: What is the lead time?

A: Stock jars ship within 7 days of payment. Custom decoration takes 20–30 days - glass printing and colour firing run longer than plastic decoration, and we quote the real date rather than an optimistic one. You confirm against your artwork before production starts.

Q: Is the glass borosilicate? Can I microwave it?

A: It is soda-lime glass - the standard, heavy, thick-walled glass used for cosmetic jars - and it is not borosilicate. Do not use it over flame or in a microwave. For cosmetic filling, including warm pours up to about 60 °C, it is exactly the right material. Listings claiming 520 °C thermal-shock tolerance for a cosmetic jar are copying kitchen-storage specifications.

Q: How does the bamboo lid seal?

A: The lid carries a PE foam gasket as standard - silicone available for high-oil formulations - machined to seat against the ground jar mouth. A jar filled to line and inverted for 24 hours must not weep; that test is part of our outgoing QC. For balms and masks we also offer a PP inner disc that keeps product off the gasket entirely.

Q: Will the bamboo lid go mouldy?

A: Not from manufacturing causes. The lids are made from culms boiled to remove sugars - the part that attracts mould and insects - dried to a controlled moisture content, then lacquered. What the process does not cover is misuse: a lid left soaking in a wet bathroom can swell, same as any natural-material product. The lid comes off for washing and dries on the rack.

Q: How is the frosted finish applied, and will it wear off?

A: The outside is sandblasted - the frost is in the glass itself, not a coating, so it cannot wear or peel off. The rim and interior stay polished. An acid-etch finish is available on request for a denser, more uniform satin if your brand wants it.

Q: Do the 30ml and 50ml jars share lids?

A: Yes - both use the same 61 mm mouth, so lids and gaskets are common parts. If your line runs both sizes, changeovers are quicker and your spare-lid stock covers both SKUs.

Q: What decoration works on frosted glass?

A: Silk-screen printing in one or two colours, or baked colour firing for durability through washing and rub. Frosted glass takes ink well - the satin surface gives a soft, slightly matte print that reads more premium than a gloss print on clear glass. On the bamboo, laser engraving is the default and cannot scratch off.

Q: What documentation can you provide for compliance?

A: Test documentation for the glass, gasket and bamboo components - including REACH and SVHC screening against the actual materials - on request. We do not issue CE or FDA certificates for packaging components because neither framework certifies them. If your market requires specific food-contact or cosmetic-contact documentation, tell us the requirement and we will confirm what we can honestly supply.

Q: How do you pack glass jars so they survive shipping?

A: Jars are nested in EPE cell dividers inside double-wall export cartons, with lids seated but not over-torqued. The carton counts in the parameter table reflect that packing. If you need retail-ready or direct-to-consumer packing - jars shipped individually boxed - that is quoted separately, and we recommend telling us at enquiry stage rather than after the first shipment arrives damaged.

Q: Can we buy the glass jars and bamboo lids separately?

A: Yes, subject to quantity. Some buyers fill at a partner facility and assemble lids locally, or order spare lids for a refill programme. Tell us the split and we will quote the components and confirm the lid-to-jar fit remains within tolerance.

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