What Are Gusseted Poly Bags?
Gusseted poly bags (also called side gusset bags or expandable poly bags) feature folded sides that expand outward when filled. This design allows the bag to accommodate bulky, irregular, or three-dimensional items that standard flat poly bags cannot handle.
The 1 mil thickness provides lightweight, economical protection ideal for:
- Food packaging: Baked goods, produce, bulk foods (FDA/USDA safe)
- Hardware & parts: Fasteners, small tools, plumbing supplies
- Textiles & apparel: Clothing, linens, fabric bolts
- Retail & e-commerce: Product packaging, multipacks, bundling
Benefits of Side Gusset Poly Bags
Expandable capacity: Gussets allow the bag to expand up to its full width + depth, maximizing volume without increasing bag size when flat.
Space-efficient storage: Bags lay flat when empty, saving warehouse and shelf space until use.
Versatile closure options: Heat seal for tamper-evidence, or use twist ties, staples, or tape for quick closure.
Crystal clear LDPE: Low Density Polyethylene provides superior clarity so customers can see product quality. Soft, flexible material conforms to item shape.
Specifications & Quality Standards
- Material: 100% virgin Low Density Polyethylene (LDPE) resin
- Thickness: 1 mil (nominal gauge - industry standard tolerance applies)
- Compliance: Meets FDA/USDA specifications for food contact
- Construction: Tubular (seamless sides) with bottom seal
- Closure: Open top - seal, tie, or fold as needed
- Packaging: Sold by the case for wholesale pricing
How to Choose the Right Gusseted Bag Size
Measure your product's dimensions:
- Width: Measure the widest point of your item
- Depth (gusset): Measure how thick/deep your item is
- Height: Measure the tallest point + add 2-3" for closure
Select a bag where: Bag Width ≥ Product Width and Gusset Depth ≥ Product Depth. When the bag expands, the gusset unfolds to create a three-dimensional space.
Why Buy Gusseted Poly Bags from Prism Pak?
Wholesale case pricing: Volume discounts for businesses, manufacturers, and resellers.
Fast shipping: Most orders ship within 1-2 business days from our warehouse.
Quality guarantee: We source only virgin resin bags - no recycled material that can compromise clarity or strength.
Expert support: Not sure which size or thickness you need? Our packaging specialists can help you choose the right product.
Frequently Asked Questions
What's the difference between 1 mil and 2 mil gusseted bags?
1 mil bags are thinner and more economical - ideal for lightweight items and short-term storage. 2 mil bags offer greater puncture resistance and durability for heavier items or longer storage. Consider 1.5 or 2 mil if your products have sharp edges.
Are these bags food safe?
Yes. All our gusseted poly bags are made from virgin LDPE resin that meets FDA and USDA specifications for direct food contact. Ideal for bakeries, food manufacturers, and produce packaging.
Can I heat seal these bags?
Absolutely. LDPE heat seals easily with impulse sealers, band sealers, or foot-operated sealers. Heat sealing provides a tamper-evident closure and extends product freshness.
How are gusseted bags measured?
Gusseted bags are measured as: Width x Gusset x Height. For example, a 6" x 4" x 15" bag is 6 inches wide (flat), has a 4-inch gusset (expands 4" outward), and is 15 inches tall.
What quantity do these come in?
Our 1 mil gusseted poly bags are sold by the case. Case quantities vary by bag size - see individual product listings for specific counts. Buying by the case provides the best wholesale pricing.
Do you offer custom printed gusseted bags?
Yes! For custom printing inquiries, contact our sales team. Minimum order quantities apply for custom printing.
Ready to order? Browse our selection above or contact us for assistance choosing the right gusseted poly bags for your application.
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