What Are Mylar Food Bags?
Have you ever wondered what makes Mylar food bags different from ordinary plastic bags? The secret lies in their construction. Mylar is actually a brand name for a special type of polyester film made from stretched polyethylene terephthalate (PET). This material is not only tough but also incredibly resistant to moisture, oxygen, and light, three of the biggest enemies of food freshness.
Originally developed by DuPont in the 1950s, Mylar has found uses in space technology, electronics, and now food preservation. When combined with an aluminum layer, it forms a powerful barrier that keeps your food protected for years, sometimes even decades!
Why Use Mylar Bags for Food Storage?
If you’ve been storing food in regular plastic containers or vacuum bags, you might ask, “Why switch to Mylar?” The answer is simple superior preservation.
Mylar food bags provide:
Oxygen and moisture barriers: These prevent mold, bacteria, and oxidation.
Extended shelf life: Properly stored food can last up to 25 years.
Pest resistance: The metallic layer stops insects from chewing through.
Light protection: Blocks harmful UV rays that can degrade nutrients.
Think of Mylar bags as tiny fortresses for your food. They’re perfect for emergency storage, camping supplies, or bulk dry goods like rice, beans, and grains.
Where Can You Find Mylar Bags in the UK?
Searching for Mylar bags UK or Mylar bags near me? You’ll be glad to know they’re widely available both online and in physical stores.
1. Online Retailers
E-commerce sites like Amazon UK, eBay, and specialty food storage suppliers offer a variety of Mylar bags. Buying online allows you to compare:
Thickness (measured in mils or microns)
Size options (from small 100ml bags to 5-gallon)
Bundle packs for bulk savings
2. Local Hardware or Survival Stores
If you prefer hands-on shopping, check local survival gear shops, hardware stores, or home storage retailers. Searching “Mylar bags near me” on Google Maps can help you find nearby options instantly.
3. What to Look for When Buying
When choosing Mylar bags in the UK, consider:
Thickness: 5 mils or more for long-term use
Sealability: Ensure they work with heat sealers or impulse sealers
Food grade certification: Always pick BPA-free and safe options
How to Use Mylar Food Bags Effectively
You’ve bought your Mylar food bags now what? Here’s how to use them like a pro.
Step 1: Prepare Your Supplies
You’ll need:
Mylar bags
Oxygen absorbers
A heat sealer or iron
Dry food (rice, pasta, oats, etc.)
Step 2: Fill the Bags
Pour your chosen dry food into the bag, leaving about 2 inches of space at the top for sealing. Avoid filling it to the brim.
Step 3: Add Oxygen Absorbers
Oxygen absorbers are crucial for keeping food fresh. Drop one or more into the bag (depending on size) before sealing.
Step 4: Seal the Bag
Use a heat sealer, flat iron, or even a hair straightener to seal the top edge. Make sure it’s completely airtight.
Step 5: Label and Store
Write the food type and date on the bag with a permanent marker. Store in a cool, dark place like a pantry or storage bin.
Pro tip: Once sealed, gently press the bag to check for air leaks. A perfect seal ensures maximum shelf life.
Are Mylar Bags Reusable?
Here’s a common question: Can I reuse Mylar bags?
The answer is yes but with care.
After emptying the contents, wipe the inside with a clean, dry cloth. If the bag remains undamaged, you can reseal it using heat again. However, note that each resealing shortens the bag’s lifespan slightly.
For sustainability-conscious users, Mylar is a great eco-option. Reusing them reduces waste while still providing excellent storage reliability.
What Sizes and Types of Mylar Bags Exist?
Not all Mylar bags are created equal. They come in different sizes and thickness levels, depending on what you’re storing.
1. Thickness Matters
3.5 mils: Good for short-term storage
5 mils: Ideal for most dry goods
7–8 mils: Heavy-duty, long-term preservation
Thicker Mylar bags resist punctures and light exposure better.
2. Size Options
Small (100ml – 500ml): Great for spices or snacks
Medium (1L – 5L): Perfect for pasta or oats
Large (1 gallon – 5 gallons): Designed for bulk storage like rice or beans
3. Zipper vs. Non-Zipper
Zipper-top Mylar bags offer easy resealing, while non-zipper versions are best for long-term airtight sealing.
Can You Store Liquids in Mylar Bags?
A tricky question! While Mylar bags can hold liquids, it’s generally not recommended for long-term storage. The bags are designed primarily for dry foods; liquids can weaken seals or cause spoilage.
If you must store liquids, opt for double sealing and refrigeration. Otherwise, stick to dry storage for best results.
How Long Can Food Last in Mylar Bags?
When stored correctly with oxygen absorbers and a cool, dark environment most foods can last 10–25 years.
Examples:
Rice: Up to 25 years
Pasta: 15–20 years
Beans: 10–15 years
Oats: 10 years
That’s longer than almost any other storage method on the market today.
Conclusion
So, are Mylar food bags worth it? Absolutely. Whether you’re a prepper, homemaker, or small business owner, they’re an unbeatable tool for keeping food fresh, dry, and safe for the long haul.
From understanding what they’re made of to knowing how to use them correctly, this guide has walked you through everything you need to know so the next time you search “Mylar bags near me” or “Mylar bags UK”, you’ll know exactly what to look for.
FAQs About Mylar Bags
1. Can Mylar bags be used without oxygen absorbers?
Technically yes, but for long-term food storage, oxygen absorbers are essential to prevent spoilage.
2. What foods should not be stored in Mylar bags?
Avoid storing moist or oily foods, such as nuts or dehydrated fruit with residual moisture.
3. Can I freeze Mylar bags?
Yes, you can freeze them but make sure the seal is tight and the bag is thick enough to prevent cracking.
4. How do I know if my Mylar bag is sealed properly?
Press the bag gently. If it feels firm with no air pockets, it’s sealed correctly.
5. Are Mylar bags safe for long-term food storage?
Yes, high-quality Mylar food bags are BPA-free and safe for long-term contact with dry foods.
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