Why Choose LK Packaging Flat Poly Bags?
LK Packaging has been a trusted name in flexible packaging for decades, and their flat poly bags exemplify quality and reliability. Whether you're packaging food products, industrial parts, or retail merchandise, these bags deliver superior protection at competitive wholesale prices.
Understanding Mil Thickness - Which is Right for You?
2 Mil Flat Poly Bags: Lightweight and economical, perfect for non-food items, light parts, apparel, and general merchandise. Offers basic protection against dust and moisture.
4 Mil Flat Poly Bags: The most popular choice for food service and industrial applications. FDA compliant for direct food contact, strong enough for frozen foods, baked goods, and medium-weight hardware. Excellent puncture resistance.
6 Mil Flat Poly Bags: Heavy-duty protection for sharp objects, heavy parts, and demanding applications. Maximum tear resistance and durability. Ideal for automotive parts, metal components, and bulk food storage.
Common Applications for Flat Poly Bags
- Food Service: Bakery items, candies, nuts, frozen foods, produce, portion control
- Retail: Apparel, small electronics, craft supplies, hardware items
- Manufacturing: Parts protection, work-in-progress inventory, component storage
- Healthcare: Medical supplies, pharmaceutical packaging, specimen transport (non-sterile)
- E-commerce: Product protection inside shipping boxes, gift wrapping
FDA Compliance & Food Safety
All LK Packaging flat poly bags meet FDA requirements for direct food contact under CFR Title 21. This certification ensures the polyethylene resin is safe for storing and transporting food products without risk of contamination. Always verify thickness requirements for your specific food application.
Ordering & Shipping Information
LK Packaging flat poly bags are sold by the case with competitive wholesale pricing. Free shipping on orders over $150 helps you save even more. Need help selecting the right size or thickness? Our packaging experts are available to assist you.
Flat Poly Bags: Frequently Asked Questions
What is a flat poly bag?A flat poly bag is a lay-flat polyethylene bag with an open top and no side or bottom gussets, so it lies completely flat when empty. LK Packaging flat poly bags are made from clear polyethylene in 2 mil, 4 mil, and 6 mil thicknesses and are used to pack food, parts, apparel, and retail goods. Because there is no expansion panel, they work best for flat or thin items and for lining boxes and totes. What is the difference between flat poly bags and gusseted poly bags?Flat poly bags have no side or bottom expansion, while gusseted poly bags have folded side or bottom panels that expand to hold bulky items. Choose a flat bag for flat, thin, or lightweight products such as apparel, documents, bakery items, and small parts. Choose a gusseted bag when the product is deep or three-dimensional, such as a loaf of bread, a coffee pack, or a boxed component. Are LK Packaging flat poly bags food safe?Yes. LK Packaging flat poly bags meet FDA requirements for direct food contact under CFR Title 21, so they can be used to store and transport food without a secondary liner. They are used for bakery goods, candy, nuts, produce, frozen foods, and portion control. Confirm the mil thickness suits your application, since frozen and heavier foods generally call for 4 mil or 6 mil. What mil thickness flat poly bag do I need?Use 2 mil for light, non-food items such as apparel, craft supplies, and small parts; 4 mil for most food service and industrial work, including frozen foods, baked goods, and medium-weight hardware; and 6 mil for sharp or heavy contents such as automotive parts, metal components, and bulk food storage. Thickness is measured in mils, where 1 mil equals one thousandth of an inch. When in doubt, step up one thickness rather than down. Can you heat seal flat poly bags?Yes. All LK Packaging flat poly bags can be closed with an impulse heat sealer or a continuous band sealer to create a tamper-evident seal. Thicker 4 mil and 6 mil bags need a longer dwell time or a higher temperature setting than 2 mil bags. Bags can also be closed with twist ties, tape, or a bag tape machine when a permanent seal is not required. Are flat poly bags recyclable?Yes, polyethylene flat poly bags are recyclable as film plastic, typically resin code #4 LDPE or #2 HDPE. Most curbside programs do not accept film plastic, so clean, dry bags should be taken to a store drop-off or film recycling collection point. Check with your local recycling center for specific film plastic guidelines in your area. Do you offer custom printed flat poly bags?Yes, Prism Pak offers custom printed poly bags by quote, and minimum order quantities apply. Custom options include your logo or artwork, specific bag dimensions, and mil thickness matched to your product. Contact us at 1-800-998-1000 to discuss artwork, quantities, and lead times. Related Categories
Looking for other poly bag options? Explore our full selection of poly bags, including reclosable zip-style bags, gusseted poly bags, and heavy-duty options from trusted manufacturers.
Order your LK Packaging flat poly bags today and experience the quality difference that comes from a premium packaging supplier. Questions? Call us at 1-800-998-1000.
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