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Few inventions in the last few decades have made an indelible mark in our daily lives. Be it reusable shopping bags, space-saving storage containers, food bags, cooler bags… the list goes on. These bags not only help to store items and save space efficiently but also protect them from any damage. However, the list would be incomplete without the humble zipper storage bag, zip lock bag, or zip bag.

According to Futuremarketinsights, the self-sealing ziplock bags market is expected to record a CAGR of 2% from 2022-2032 and is likely to reach a whopping US$ 25.34 Billion by 2032! Let’s better understand ziplock bags today, their characteristics, uses, demerits, and more!

What are Zip Lock Bags?

Zip lock bags are storage containers that are usually built transparent, can be resealed & used multiple times with either a zipper or slider, and come in various sizes, thicknesses, and shapes. The resealable nature, ability to securely store the contents, and simplicity of use make ziplock bags an extremely popular household & industrial essential for keeping food, liquids, small objects, etc.

What are the different types of ziplock bags?

There are different types of zipper bags, including

  1. Slider bags
  2. Pinch-and-seal bags
  3. Sandwich bags
  4. Stand-up bags
  5. Freezer bags
  6. Gallon-sized bags
  7. Anti-Static bags
  • As the name suggests, slider bags have a sliding mechanism that facilitates easy opening and closing. It is usually made of plastic and is long-lasting.
  • Pinch-and-seal or slider-free bags rely on the traditional mechanism of pinching and closing and don’t have a slider to seal the bag. The pinch and seal make the bag airtight and secure.
  • Sandwich bags are specially designed to store sandwiches and other small deli items and are certified safe to come in contact with food.
  • Stand-up bags or pouches come with a sturdy base that allows them to stand erect without support. These are typically common to store food items, spices, leaves, snacks, and more.
  • Stand-up bags are known for being stable and damage-resistant in comparison.
  • Freezer bags are built to withstand extreme cold temperatures and can be used to store & preserve food items such as meat and seafood.
  • Gallon bags are larger than usual zipper bags and are suitable for storing bulkier items such as whole turkey and chicken.
    Anti-static bags are built to store electronic items and protect against electrostatic discharge (ESD).

What are zipper bags made of?

Ziplock bags are typically made of polyethylene, a type of plastic that offers flexibility, durability, and moisture resistance. Further, zipper bags can be made from low-density polyethylene (LDPE) and high-density polyethylene (HDPE). Many high-quality zipper bags from trusted suppliers are certified food-safe and can be used to store and preserve food items. Many manufacturers have recently begun making eco-friendly alternatives from biodegradable or compostable materials to address environmental concerns.

What are the different sizes of ziplock bags available?

Depending on the purpose it serves, ziplock bags can come in different sizes and shapes.

  • Small Size: Anywhere from 4-8 inches, for example, sandwich bags.
  • Medium Size: Typically 10-12 inches, for example, storing a variety of food items and general organization. They are also used as a travel pouch.
  • Large Size: Anywhere from 13-15 inches. Bulky food items or big articles.
  • Jumbo Size: Anywhere from 15-28 inches. They are used for storing bedding, blankets, etc.

Many manufacturers also provide custom sizing for zipper bags.

Which Industries Benefit from Ziplock Bags?

Here are some common industries where ziplock bags are a staple.

  • Food Industry: To store and preserve food items, seafood, meat, poultry, sandwiches, and other deli items.
  • Retail outlets: For packing jewelry, stationary items, hardware, and electronics accessories.
  • Pharmacies & Healthcare sector: To store and safely organize medicines and small, blunt medical equipment.
  • Agriculture: To store seeds, cut leaves, dried flowers, etc.
  • Hospitality and Travel: To store handy items such as dental kits, toiletries, travel kits, soaps, etc.

Are Zip Bags Food-Safe?

Yes, zip bags that are certified food-safe can be used to store any edible items. Please note that not all ziplock bags get this certification and must be handpicked.

Are Ziploc Bags Safe for Boiling?

No, Ziploc bags are not safe for boiling. It is made of plastic(polyethylene), which may result in leeching and contaminating the contents. Most plastics have boiling points less than liquids such as water, bringing this severe risk. It must be noted not to boil any food items stored with common zipper bags. For sous vide cooking (cooking food in a precisely controlled water bath at lower temperatures), there are zip lock bags specially designed and deemed safe after rigorous testing. Always check with the manufacturer or their guidelines before boiling zip-lock bags.

Are Ziplock Bags Airtight & Waterproof?

Yes, high-quality ziplock bags are built to be airtight & waterproof, thus are useful for storing food items for longer durations. However, it is necessary to seal the bag so that moisture doesn’t find its way in. For instance, press down the bag gently but firmly so that air within is expelled. Further, if you store liquids, don’t fill the bag to its total capacity and leave some air at the end. This will prevent the bag from bursting if it is under any pressure or if the liquid expands. In particular, double-zipper bags are useful if you want to thoroughly be moisture-free and waterproof. The two separate sets of interlocking zipper mechanisms in these zip locks help to offer an additional layer of protection against the elements.

Can You Microwave Ziplock Bags?

No, it is best not to microwave ziplock bags. Although some are labeled as ‘microwave-safe,’ the extreme temperatures within the oven pose a risk of melting plastic. This may leech into the food item, contaminate it, and invite a host of health conditions. Utilize microwave-safe cookware, such as glass or ceramic, to heat or cook food.

How Can I Clean And Maintain Ziplock Bags Effectively?

It is easy to clean and look after ziplock bags. Empty the bag’s contents and wipe it clean with a damp cloth. This will ensure any food or particle residue gets removed. The bag can then be rinsed with lukewarm water with a mild detergent to remove greasy or stubborn residue. Avoid using rough scrubbers or sharp cleaning tools since they may puncture the bag. Airdry the bag completely after this.

What Are The Merits & Demerits Of Zip Bags?

Let’s take a look at the merits and drawbacks of ziplock bags.

  1. Ease of use. Extremely convenient to store.
  2. Most bags protect against liquid contamination and moisture.
  3. With sealable nature using zippers or sliders, these bags can be used multiple times.
  4. Easy to clean and maintain.
  5. Comparatively affordable means of storage and organizing.
  6. Available in various sizes and shapes.
  1. Since zip locks are made of plastic, which is not a renewable energy source.
  2. Not all bags are certified food-safe. If such bags are used to store food, microplastic may leach and contaminate the food.
  3. Ziplocks don’t have superior puncture-resistant abilities. If used to sharp objects, it may tear.
  4. Not ideal for high temperatures.
  5. If not properly sealed, bags may be prone to leaks.

RediBagUSA: The Best Zipper Bag Manufacturer

Are you looking for ziplock bags for your business or personal use? We have solutions for both. We can offer custom printing options that will help white label your business. Our zip bags are transparent and made of LDPE.

The image shows RedibagUSA's ziplock bag details and specifications.

Let’s discuss your business requisites and find the right solution to meet packaging & storage needs. Our rich catalog of products includes reusable bags, produce bags, can liners, seafood bags, and much more.

Rely on the Experience

With a complete and diversified selection of products, RediBagUSA is the company you were searching for. We handle the production, distribution, and logistics capabilities to serve some of the world’s largest international supermarkets and quick-service restaurants.

Contact us for more information about our offer and how we can satisfy your every packaging need!

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