What Are Greaseproof Paper Bags?
Greaseproof paper bags are specially treated food-safe bags designed to repel oil, grease, and moisture—making them the go-to packaging for bakeries, cafes, and food retailers. Unlike standard kraft paper bags (which soak up oil quickly), greaseproof bags create a barrier that keeps oils and butters from seeping through.
This barrier is typically achieved through a PFAS-free coating—critical for compliance in 2026, given the FDA’s phase-out of PFAS-containing grease-proofing agents in 2024—or a dense, treated paper structure engineered to resist saturation <superscript:4>. This results in a clean, professional packaging solution that maintains the following key attributes:
- the outer surface clean
- hands grease-free
- branding visible
Greaseproof bags are non-negotiable for oily baked goods like croissants, donuts, pastries, and even savory items like garlic bread or cheese scones. For dry goods (think plain cookies or bread rolls), standard kraft bags work.
Why Bakeries Need Greaseproof Bags
For bakery owners, packaging is just as important as the baked goods themselves. Greaseproof bags aren’t a “nice-to-have”—they’re a business necessity. Here’s why:
1. Prevent Oil Leakage
Most bakery items are loaded with butter, oil, or creamy fillings. Without a grease-resistant barrier:
- Oil soaks through the bag, leaving messy stains
- Packaging looks cheap and unprofessional
- Customers may associate stains with low-quality food
2. Improve Customer Experience
Modern customers expect clean, convenient packaging—no one wants greasy hands or stained clothes after grabbing a pastry. Greaseproof bags deliver that premium feel, showing your customers you care about every detail of their experience. Happy customers = repeat customers!
3. Protect Your Brand Image
Your packaging is a walking advertisement for your bakery. An oil-stained bag doesn’t just look bad—it damages your brand’s reputation. Clean, crisp greaseproof bags keep your logo front and center, reinforcing your bakery’s professional, high-quality vibe.
4. Maintain Food Freshness
Unlike plastic packaging, greaseproof paper balances two key needs: oil resistance and breathability. This means your pastries stay fresh longer—no soggy bottoms or stale crusts—while still keeping oils contained. It’s the perfect middle ground for baked goods that need to stay crisp and delicious.
Types of Greaseproof Paper Bags for Bakery Use
Not all greaseproof bags are the same—choose the style that fits your products and workflow. Here’s a breakdown of the most common types, tailored to bakery needs:
Flat Greaseproof Paper Bags
Best for: Single pastries (croissants, scones), cookies, or small treats (e.g., macarons, mini muffins)
Advantages:
- Cost-effective for high-volume use (perfect for bakeries with busy morning rushes)
- Slim and easy to store (fits in small dispensers or under counters)
- Simple to use—just slide in the product and go
Pinch Bottom (V-Bottom) Greaseproof Bags
Best for: Grab-and-go items, takeaway snacks, or small portions (e.g., a handful of cookies, a single donut)
Advantages:
- Fast to pack—great for busy cafes or bakery
- Clean, streamlined presentation
Window Greaseproof Bags
Best for: Premium bakery products, gift items, or display cases (e.g., artisanal pastries, custom cookies)
Advantages:
- Product visibility—customers can see the freshness and quality of your baked goods
- Attractive presentation (boosts impulse buys in display cases)
- Reinforces your brand’s premium image (perfect for high-end patisseries)
How to Choose the Right Greaseproof Bag
Choosing the right greaseproof bag comes down to 5 key factors—ignore them, and you’ll end up with leaky, wasteful packaging. Follow this step-by-step guide to get it right:
1. Match the Bag to Your Product Type
Not all bags work for all baked goods. Use this quick reference to avoid mistakes:
|
Bakery Product
|
Recommended Greaseproof Bag
|
|---|---|
|
Croissants, scones, single pastries
|
Flat or V-bottom greaseproof bags
|
|
Donuts, filled pastries (oily)
|
Gusseted greaseproof bags (extra capacity + leak protection)
|
|
Cookies, macarons, small treats
|
Flat greaseproof bags (cost-effective for high volume)
|
|
Multiple items, large pastries, bread
|
Gusseted greaseproof bags (expandable + sturdy)
|
|
Premium/gift items
|
Window greaseproof bags (showcase your product)
|
2. Check the Grease Resistance
Grease resistance is measured using the Kit Rating, a standard method that tests how well paper repels oils of varying “aggressiveness”. The higher the Kit number, the better the grease resistance:
- Kit 3–5: Light grease resistance (only for dry, low-oil items like plain cookies)
- Kit 6–8: Medium grease resistance (PERFECT for most bakeries—works for croissants, donuts, and buttery pastries)
- Kit 9–12: High grease resistance (for fried bakery items like churros or fried donuts)
Pro Tip: Don’t waste money on Kit 9+ bags unless you sell fried goods. Kit 6–8 is affordable and effective for 90% of bakeries.
3. Choose the Right Paper Thickness (GSM)
GSM (Grams per Square Meter) measures paper thickness—and thicker paper = sturdier bags. Here’s what works for bakeries:
- 40–50 GSM: Lightweight (for delicate items like macarons or mini pastries—don’t use for heavy or oily products)
- 50–70 GSM: Standard thickness (ideal for most bakery items: croissants, cookies, donuts)
- 70+ GSM: Heavy-duty (for large, heavy, or extra-oily items like stuffed pastries or small loaves of bread)
4. Size Matters
Using the wrong size bag is a common mistake that wastes money and hurts presentation. Here’s why size matters:
- Oversized bags: Waste material (higher cost), look unprofessional, and let products move around (risk of damage)
- Undersized bags: Tear easily, crush your baked goods, and make packaging a hassle
Quick Hack: Test a few sizes with your most popular products before buying in bulk.
5. Prioritize Sustainability
In 2026, customers and regulators are cracking down on harmful chemicals and waste. Choose greaseproof bags that are:
- PFAS-Free: The FDA phased out PFAS-containing grease-proofing agents in 2024 due to health and environmental concerns. Look for bags labeled “PFAS-Free” to stay compliant and build trust with eco-conscious customers.
- Recyclable/Compostable: Opt for bags made from FSC-certified paper (sustainably sourced) or compostable materials—73% of customers say they’d choose a bakery with eco-friendly packaging.
Greaseproof vs Standard Paper Bags
Still on the fence about greaseproof vs standard kraft bags? This chart makes it easy:
|
Feature
|
Greaseproof Paper Bags
|
Standard Kraft Bags
|
|---|---|---|
|
Oil Resistance
|
High (no leakage, no stains)
|
Low (soaks up oil quickly)
|
|
Clean Appearance
|
Excellent (keeps logos visible)
|
Poor (oil stains ruin presentation)
|
|
Food Safety
|
FDA-approved, PFAS-free options available
|
FDA-approved
|
|
Breathability
|
High (keeps pastries fresh)
|
High (but not useful for oily items)
|
|
Cost
|
Slightly higher (worth it for oily items)
|
Lower (only for dry goods)
|
|
Best Use
|
Bakery items (croissants, donuts, pastries)
|
Dry goods (plain bread, cookies, non-oily snacks)
|
For bakery products with any oil or butter, greaseproof bags are almost always the better choice. Standard kraft bags work only for dry items—don’t risk ruining your brand with leaky packaging.
Where to Buy Greaseproof Paper Bags
Sourcing Options by Business Stage
| Business Stage | Recommended Source | MOQ | Lead Time |
|---|---|---|---|
| Home / hobbyist | Amazon, retail stores | 10–500 units | 1–5 days |
| Small brand (startup) | Alibaba, domestic wholesaler | 500–1,000 units | 2–3 weeks |
| Growing brand | Direct manufacturer | 1,000–5,000 units | 2–4 weeks |
| Large retailer | OEM packaging manufacturer | 5,000+ units | 3–5 weeks |
Key Questions to Ask Your Supplier
- Are materials FDA and EU food-contact compliant? Request documentation.
- What defect rate guarantees does the supplier offer, and what is their replacement policy?
- Can they provide physical samples before you commit to a bulk order?
For brands looking for a reliable, certified manufacturer, RBD Packaging has been producing custom packaging since 2005. They hold ISO 22000 and FDA certifications, offer full customization for greaseproof paper bags and kraft paper bags, and provide free samples so you can verify quality before placing any order. Reach out at [email protected] to discuss your specific requirements.
FAQ
Are greaseproof bags more expensive than standard kraft bags?
Yes, greaseproof bags are slightly more expensive (usually 10–20% more) than standard kraft bags. But the extra cost is worth it—they prevent oil leaks, protect your brand, and improve customer experience, which leads to repeat business.
What are greaseproof paper bags used for?
Greaseproof paper bags are designed for packaging oily, buttery, or moist food items—most commonly bakery products. They prevent oil leakage and keep packaging clean.
Are greaseproof paper bags food-safe?
Yes! Reputable greaseproof bags are FDA-approved for direct food contact.
Can I customize greaseproof paper bags with my bakery logo?
Yes! Most suppliers offer custom printing for greaseproof bags—you can add your logo, brand colors, or a short message. Custom bags are a great way to boost brand visibility and make your bakery stand out.
Start Upgrading the Packaging Today.
Greaseproof paper bags aren’t just a packaging upgrade—they’re an essential tool for any bakery that cares about product quality, customer experience, and brand reputation.
Quick Decision Checklist Before You Order
- Confirmed product dimensions and fill weight
- Selected correct barrier specification for your product category
- Verified FDA and food-safe compliance with your supplier
- Select the correct packaging structure – window and Tin Tie.
- Matched printing method to your order volume and budget
- Requested physical samples before placing a bulk order
RBD Packaging has been manufacturing custom packaging since 2005, with ISO 22000 and FDA certifications and a track record of working with brands across food, nutraceuticals, and cosmetics.Whether you need kraft paper bags for an bakery brand or high-barrier foil pouches for long-term food storage, they offer full customization and free samples to get you started with confidence.
Contact the RBD Packaging team directly at [email protected] to request your free sample or discuss a custom packaging solution tailored to your product.
