Lay Flat Bags
Versatile, durable, and cost-effective LDPE bags with open tops and sealed bottoms. The most common poly bag style — used across food, retail, industrial, and shipping applications nationwide.
About Lay Flat Bags
Lay flat bags are two-dimensional LDPE bags with an open top and a sealed bottom — one of the most common poly bag styles in use across virtually every industry. At M Plastics, we extrude every lay flat bag in-house from 100% virgin low-density polyethylene resin, giving us complete control over mil thickness accuracy, clarity, and seal strength.
Our flat bags feature a durable bottom seal and provide superior clarity for easy product identification. They can be closed with heat sealers, staples, twist ties, or adhesive tape depending on your application. With proper storage, our bags have a 5-10 year shelf life.
Every bag is manufactured to your exact specifications — you tell us the width, length, and mil thickness, and we manufacture precisely that. We don't stock generic sizes and hope they fit. Our in-house extrusion handles both small custom runs and large-scale production with the same precision.
For food-contact applications, our lay flat bags meet food packaging requirements for direct food contact packaging. Manufactured from FDA-grade virgin LDPE under our FSSC 22000 certified food safety management system, every lot is traceable from raw resin to finished bag with Certificates of Compliance available on request.
Lay flat bags are lightweight, flexible, and pack efficiently — saving space in storage and during transport. Their simplicity makes them the most economical poly bag option for high-volume production and fulfillment lines.
Lay Flat Bags Images
Product examples, construction details, and manufacturing views for lay flat bags.
Features & Specifications
Open-top with durable bottom seal
100% virgin LDPE or LLDPE resin
Superior clarity for product visibility
FDA-grade virgin materials for food contact
Custom printing up to 6 colors
In-house extrusion for precise mil thickness control
Lot-traceable production under FSSC 22000
Heat sealable, or close with ties, staples, or tape
5-10 year shelf life with proper storage
Custom sizes — manufactured to your exact specs
Weight Formula
(Width × Length × mil thickness) ÷ 15 = lbs per 1,000 bagsCommon Applications
How businesses use Lay Flat Bags across industries.
Food & Produce
FDA-grade virgin material bags for meat, produce, bakery, poultry, and frozen food. Virgin LDPE with full traceability and Certificates of Compliance.
Parts & Hardware
Protect nuts, bolts, fasteners, and components during storage, shipping, and inventory management.
Retail & E-Commerce
Product protection inside shipping boxes. Clear poly for visibility. Lightweight and pack-efficient for high-volume fulfillment.
Industrial & Manufacturing
Dust covers, clean room supplies, and general-purpose wrapping for manufacturing operations.
Medical & Healthcare
FDA-grade virgin material bags for hospital supplies, dental materials, and medical device packaging under controlled conditions.
Agriculture & Nursery
Seed packaging, plant protection, and agricultural product bagging for farm-to-market distribution.
Frequently Asked Questions
The right mil thickness depends on your application — lighter mil thicknesses for product protection and display, heavier mil thicknesses for sharp or heavy items. Our sales team can recommend the optimal mil thickness based on what you're packaging and how it will be handled.
Yes. All food-contact bags are manufactured from 100% virgin FDA-grade LDPE resin under our FSSC 22000 and ISO 22000 certified food safety system. We meet both food packaging requirements for direct food contact.
Yes. Up to 6-color flexographic printing with food packaging inks. We can print logos, text, barcodes, nutritional info, and compliance messaging.
Lay flat bags are flat, two-dimensional bags — best for thin or flat items. Gusseted bags have expandable side folds that create a three-dimensional shape for bulky products. If your product has depth, gusseted bags provide a better fit.
Lay flat bags can be heat sealed (impulse sealer or constant heat), closed with twist ties, secured with staples, or sealed with adhesive tape. Heat sealing provides the most secure, tamper-evident closure.
Minimums vary based on size and specifications. Contact our sales team with your requirements for exact minimums and lead times.
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