Home > Pre-Opened Bags For Automated Packaging Equipment
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Pre-Opened Clear Poly Bags 2 Mil Pre-Opened Clear Poly Bags 3 Mil
Pre-Opened Clear Poly Bags 4 Mil Pre-Opened White Front Clear Back Poly Bags 2 Mil
Pre-Opened Clear Poly Bags 1.5 Mil

Pre-Opened Bags for Automated Packaging Equipment

Increase your packaging speed with pre-opened bags on rolls, designed for use with automatic bagging machines like Autobag, Sharp, Titans, and Advanced Poly systems. Our auto bags feature a pre-opened slit on the front and perforated back for fast, efficient product loading—whether you're running high-speed automated equipment or manual operations.

Why Choose Prism Pak Pre-Opened Bags?

  • 100% machine compatible – Works with all standard automatic packaging equipment
  • FDA-safe materials – Food-grade polyethylene, safe for direct product contact
  • Wholesale pricing – Save more on bulk orders with no minimum purchase required
  • Fast shipping – Stock items ship within 24-48 hours

Available in clear or white-front/clear-back styles with multiple stock sizes. All bags are wound on 3" cores for seamless machine operation.

Custom Options Available: Need custom pre-opened bags? We offer multiple colors (tinted and opaque), custom perforations, vent holes, hang holes, headers, UVI, VCI, and up to 8-color printing. Custom orders ship within 4 weeks. Contact us for a quote.

  • Pre-Opened Clear Poly Bags 2 Mil

    Pre-opened bags for use on automated packing machines

    Auto Bags | Pre-Opened Bags on Rolls 2.0 Mil

    Bags for Automated Packaging Machines


    Our 2.0 Mil Thick Pre-opened bags on rolls are for use on automated packing machines. Available in all clear or white front with clear back styles, you’ll find many stock sizes of our pre-opened bags. Our auto bags are made with a tubular construction and a durable bottom seal. These bags have an opened slit in the front and a perforated back for automatic or fast hand product loading.

    • Pre-opened bags are neatly wound on 3” cores.
    • Core plugs have 1" diameter holes.
    • Stock items ship within 24-48 hours.
    Custom options for pre-opened bags on rolls are available. These include multiple colors (tint and opaque), special perforations, venting and hang holes, headers, UVI, VCI and printing up to 8 color process. Our custom pre-opened bags on rolls ship within 4 weeks. Contact us via our website chat or send us an email here for more information.
  • Pre-Opened Clear Poly Bags 3 Mil

    Pre-Opened Poly Bags on Rolls | 3 Mil Auto Bags


    Fast-Loading Bags for Automated Packaging Systems

    Our 3 Mil thick pre-opened poly bags on rolls are designed for automated packing machines and high-speed hand loading. Each bag features a pre-slit opening in the front and perforated back for seamless product insertion—eliminating the time wasted opening bags manually.

    Key Features:
    • Tubular construction with durable bottom seal
    • Pre-opened front slit + perforated back for fast loading
    • Neatly wound on 3" cores with 1" diameter core plug holes
    • Available in all clear or white front/clear back
    • Stock sizes ship within 24-48 hours
    • FDA-compliant for food contact (safe for dry goods)

    Ideal for packaging parts, hardware, apparel, small electronics, bakery items, and more. Compatible with most automatic bagging machines including Autobag®, Minipack, and similar systems.
  • Pre-Opened Clear Poly Bags 4 Mil

    4 Mil Pre-Opened Poly Bags for Automated Packaging

    Speed up your packaging line with our 4 mil pre-opened poly bags on rolls. Designed for use with automated bagging machines (Autobag, PAC, etc.), these bags feature a pre-opened front slit and perforated back for fast, efficient product loading.

    Key Benefits:

    • Time-saving design: Pre-opened bags eliminate manual bag opening, increasing throughput
    • Machine compatibility: Fits most automated packaging equipment with 3" cores
    • Durable construction: 4 mil thickness provides tear resistance for heavier products
    • Quick shipping: Stock sizes ship within 24-48 hours
    • FDA-compliant: Safe for food contact applications

    Available Styles: All clear or white front with clear back

  • Pre-Opened White Front Clear Back Poly Bags 2 Mil

    2 Mil Pre-Opened White Front / Clear Back Poly Bags on Rolls — Prism Pak

    Auto Bags for Automated Packaging Machines



    Our 2 mil pre-opened white/clear poly bags on rolls are for use on automated packing machines are available in many stock sizes. Made with a tubular construction and a durable bottom seal, these bags have an opened slit in the front and a perforated back for automatic or fast hand product loading.

    • Pre-opened bags are neatly wound on 3" cores.
    • Core plugs have 1" diameter holes.
    • Stock items ship within 24-48 hours.
    Custom options for pre-opened 2 mil poly bag rolls are available. These include multiple colors (tint and opaque), special perforations, venting and hang holes, headers, UVI, VCI and printing up to 8 color process. Our custom pre-opened white/clear bags on rolls ship within 4 weeks. Contact us via our website chat or send us an email here for more information.
  • Pre-Opened Clear Poly Bags 1.5 Mil

    Pre Opened Bags For Auto Packaging

    Pre-Opened Poly Bags 1.5 Mil | Auto Bags on Rolls

    High-Speed Packaging for Automated Systems

    Pre-opened poly bags (also called auto bags) are designed for high-volume automated packaging operations. Our 1.5 mil thickness provides the ideal balance of strength and flexibility for automated machinery, reducing jams and downtime while protecting your products.

    Why Choose Our Pre-Opened Bags?

    • Fast Shipping: Stock sizes ship within 24-48 hours
    • Machine-Ready: Pre-opened slit and perforated back for seamless automation
    • Durable Construction: Tubular design with reinforced bottom seal
    • Multiple Sizes: Stock inventory across common dimensions
    • Custom Options: Printing, colors, venting, and more (4-week lead time)

    Available in: All clear or white front with clear back. Wound on 3" cores with 1" diameter core plug holes for standard mounting.

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3X5 2 mil Auto Style White/Clear Bags 2,000/Roll| Prism Pak 3X5 2 mil Auto Style Wht/Cl 2000 Bags/Roll
1 Roll $31.17
4X6 2mil Auto Style Wht/Cl 2000 Bags/Roll| Prism Pak 4X6 2mil Auto Style Wht/Cl 2000 Bags/Roll
1 Roll $46.08
5X7 2 mil Auto Style White/Clear 1,750 Bags/Roll| Prism Pak 5X7 2 mil Auto Style Wht/Cl 1750 Bags/Roll
1 Roll $56.47
6X8 2 mil Auto Style White/Clear 1,250 Bags/Roll| Prism Pak 6X8 2 mil Auto Style Wht/Cl 1250 Bags/Roll
1 Roll $51.83
8X10 2 mil Auto Style White/Clear 1250 Bags/Roll| Prism Pak 8X10 2 mil Auto Style Wht/Cl 1250 Bags/Roll
1 Roll $84.82
2X3 2 mil Auto Style 4000 Bags/Roll| Prism Pak 2X3 2 mil Auto Style 4000 Bags/Roll
1 Roll $34.30
3X3 1.5 mil Auto Style 4500 Bags/Roll| Prism Pak 3X3 1.5 mil Auto Style 4500 Bags/Roll
1 Roll $42.06
3X3 2 mil Auto Style 4000 Bags/Roll| Prism Pak 3X3 2 mil Auto Style 4000 Bags/Roll
1 Roll $41.52
3X4 2 mil Auto Style 3000 Bags/Roll| Prism Pak 3X4 2 mil Auto Style 3000 Bags/Roll
1 Roll $36.78
3X4 1.5 mil Auto Style 4000 Bags/Roll| Prism Pak 3X4 1.5 mil Auto Style 4000 Bags/Roll
1 Roll $41.79
3X5 1.5 mil Auto Style 3000 Bags/Roll| Prism Pak 3X5 1.5 mil Auto Style 3000 Bags/Roll
1 Roll $35.80
3X6 1.5 mil Auto Style 2500 Bags/Roll| Prism Pak 3X6 1.5 mil Auto Style 2500 Bags/Roll
1 Roll $33.76
3X5 2 mil Auto Style 2000 Bags/Roll| Prism Pak 3X5 2 mil Auto Style 2000 Bags/Roll
1 Roll $29.14
3X6 2 mil Auto Style 2000 Bags/Roll| Prism Pak 3X6 2 mil Auto Style 2000 Bags/Roll
1 Roll $31.77
3X8 2 mil Auto Style 1250 Bags/Roll| Prism Pak 3X8 2 mil Auto Style 1250 Bags/Roll
1 Roll $27.78
4X4 2 mil Auto Style 3000 Bags/Roll| Prism Pak 4X4 2 mil Auto Style 3000 Bags/Roll
1 Roll $47.01
   
 

What Are Pre-Opened Bags on Roll?

Pre-opened bags (also called auto bags or Autobags) are specialty poly bags designed for automated and manual packaging operations. Each bag features:

  • Pre-opened front slit – Allows instant product insertion without fumbling
  • Perforated back – Easy tear-off separation between bags
  • Tubular construction – Durable bottom seal prevents leaks
  • Rolled on 3" cores – Fits standard automatic bagging machine spindles

This design eliminates the need to manually open each bag, drastically reducing packaging time and labor costs.

Which Industries Use Pre-Opened Bags?

Auto bags are essential for high-volume packaging across multiple industries:

  • Food Service & Manufacturing – Bakery items, snacks, produce, frozen goods
  • E-commerce & Retail – Apparel, small parts, promotional items, subscription boxes
  • Industrial Manufacturing – Hardware, fasteners, components, replacement parts
  • Medical & Pharmaceutical – Sterile supplies, medical devices, pharmaceutical samples
  • Agriculture – Seeds, fertilizer samples, soil additives

Any business that packages hundreds or thousands of items per day can benefit from automated bagging.

Benefits of Pre-Opened Bags vs. Regular Poly Bags

Speed & Efficiency

Pre-opened bags eliminate the most time-consuming step in manual packaging: opening each bag. On automated equipment, they can process 30-60+ bags per minute, compared to 10-15 bags/minute with manual bagging.

Labor Cost Savings

Fewer workers needed for packaging operations. One operator can manage an automated system that would otherwise require 3-4 manual packers.

Consistency & Quality

Automated bagging ensures uniform bag placement, seal quality, and presentation—reducing customer complaints and returns.

Reduced Product Damage

No fumbling with bag openings means less handling of delicate products. FDA-safe materials protect food items from contamination.

How to Choose the Right Pre-Opened Bags

Size & Dimensions

Measure your product's length, width, and height. Add 1-2" to each dimension for easy insertion and sealing. Common sizes:

  • 4" x 6" – Small parts, jewelry, samples
  • 6" x 9" – Apparel, documents, small packaged goods
  • 10" x 13" – Clothing, catalogs, medium products
  • 12" x 15" – Larger items, multipacks

Thickness (Mil)

  • 1.5 mil – Lightweight items (apparel, documents)
  • 2.0 mil – Standard all-purpose (most common)
  • 2.75-3.0 mil – Heavy-duty (sharp objects, heavier products)

Clear vs. White Front

  • Clear bags – Show product for retail display or quality inspection
  • White-front/clear-back – Provide branding space while allowing barcode scanning on back

Are Pre-Opened Bags Compatible with My Machine?

Our pre-opened bags work with all standard automatic bagging equipment, including:

  • Autobag® systems (Automated Packaging Systems)
  • Sharp packaging machines
  • Titan automated baggers
  • Advanced Poly packaging equipment
  • Generic roll-fed bagging systems

All bags are wound on standard 3" cores. If you need custom core sizes or perforation spacing, contact our team for specifications.

Custom Pre-Opened Bags: Branding & Special Features

Make your packaging work harder with custom options:

  • Custom printing – Up to 8-color process for logos, branding, instructions
  • Vent holes – Prevent air pockets, essential for food packaging
  • Hang holes – Retail display-ready packaging
  • Headers – Add fold-over tops for hanging or branding space
  • UVI (UV inhibitors) – Protect products from sun damage during storage/shipping
  • VCI (Vapor Corrosion Inhibitors) – Prevent rust on metal parts

Custom orders require 4-week lead time. Request a quote to get started.

Ordering & Shipping Information

  • Stock items: Ship within 24-48 hours
  • Custom orders: 4-week production time
  • Minimum order: None for stock items; custom minimums vary by specification
  • Wholesale pricing: Volume discounts available—the more you order, the more you save

Need help selecting the right pre-opened bags for your operation? Contact our packaging experts or call 570-709-0366 for personalized recommendations.

Frequently Asked Questions

What is the difference between pre-opened bags and regular poly bags on rolls?

Pre-opened bags have a slit cut into the front panel, so each bag is already open as it comes off the roll, while regular poly bags on rolls are sealed and must be opened or cut by hand. Pre-opened bags also have a perforated back for tear-off separation and are wound on 3" cores, which is what allows an automatic bagger to run 30 to 60 or more bags per minute versus roughly 10 to 15 per minute by hand.

Can I use pre-opened bags without an automatic bagging machine?

Yes, pre-opened bags work well for hand packing as well as automated equipment. Because the front slit is already open, packers skip the slowest step in manual bagging, which makes these bags a common upgrade for small operations that are not yet running an Autobag or similar machine.

Are pre-opened bags food safe?

Yes, our pre-opened bags are made from FDA-compliant polyethylene approved for direct food contact. That makes them suitable for bakeries, snack and produce packers, frozen goods, and food manufacturing lines.

What size pre-opened bag do I need?

Measure your product's length, width, and height, then add 1 to 2 inches to each dimension so the product loads and seals cleanly. Common stock sizes are 4" x 6" for small parts, jewelry, and samples; 6" x 9" for apparel, documents, and small packaged goods; 10" x 13" for clothing and catalogs; and 12" x 15" for larger items and multipacks.

How many bags come on each roll?

A typical roll holds 500 to 2,000 bags, depending on bag size and thickness. Every roll is wound on a standard 3" core, and the exact bag count per roll is listed on each individual product page.

Do you offer eco-friendly or recyclable pre-opened bags?

Our standard pre-opened bags are made from LDPE, which is recyclable #4 plastic. Biodegradable and compostable materials are available as a custom order on a 4-week lead time.