SC Johnson SC Johnson acquired the Ziploc® brand in 1998, and we've been bringing innovation to the business ever since. For example, we introduced a double zipper for better bag sealing in 2006, and Easy Open Tabs™ in 2014.

Polyethylene-Linear Low Density is a polymer that can be used to form a plastic bag and its zip closure. It is part of the Polyethylene (PE) family, which is the most widely used plastic. Polyethylene-Linear Low Density, also known as LLDPE, is commonly used in packaging, containers and wraps such as bubble wraps.

All of our bags are BPA free, safe for microwave heating or in-bag simmering, and are made in the USA.

With a wide range of high-quality products, the Inteplast Group is North America's largest integrated plastics manufacturer. Some of the company's products include BOPP and stretch-wrap films, plastic concentrates and compounds, supermarket, merchandise, and Clothing bags, garbage can liners, and institutional items.

What's the difference between freezer bags and non-freezer bags? In short, freezer bags are thicker. How much thicker varies by brand, but Ziploc freezer bags are about twice as thick as non-freezer bags. This added thickness is supposed to help prevent tears and punctures, but it also increases the cost.

In this test, we dropped each bag, filled with water, from heights of 3 feet, 6 feet, and 9 feet. We determined that Hefty is the strongest freezer bag because it passed each test. Ziploc only failed at 9 feet.

Ziploc is a brand of reusable, re-sealable sliding channel storage bags and containers originally developed and test marketed by The Dow Chemical Company in 1968 and now produced by S. C. Johnson & Son. The plastic bags and containers come in different sizes for use with different products.

All Ziploc® brand Containers and microwavable Ziploc® brand Bags meet the safety requirements of the U.S. Food and Drug Administration (FDA) for temperatures associated with defrosting and reheating food in microwave ovens, as well as room, refrigerator and freezer temperatures.

China: the plastic leader As the leading manufacturing economy and exporter of goods in the world, it is not surprising that China is the world's largest producer of plastic as well.

Of the two, polyethylene is the most popular choice because of its versatility, and polypropylene is highly valued for its clarity and tensile strength.

IKEA Family benefits ISTAD bags can be resealed and used again and again. It keeps contents fresh, withstands freezing and can be filled with contents up to 122 °F – and it helps you keep your kitchen and home organized.

Ziploc bags are designed to be durable and reusable. If you use them carefully and wash them thoroughly, you can reuse them several times. However, it's important to inspect them carefully before each use to make sure they are not damaged or worn. If you notice any signs of wear or tear, it's best to replace them.