Custom Lay Flat Bags
Custom Polyethylene Lay Flat Bags for Food Processing, Industrial, Medical & Packaging Applications
California Plastix manufactures custom lay flat bags for food processors, industrial manufacturers, medical product suppliers, distributors, co-packers, and retail brands. Each bag is engineered to customer specifications, including width, length, gauge, material selection, printing, and food-contact requirements.
With in-house manufacturing in Pomona, California, we support customers throughout California and across the United States with consistent production and recurring supply programs.
What Are Lay Flat Bags?
Lay flat bags are simple, versatile polyethylene bags with no folds on either side or across the bottom. Two flat faces form a straightforward package that can be manufactured in custom sizes and seal styles to match your product and production line.
Unlike gusseted bags, lay flat bags do not have folded panels that expand to add depth. They are a practical choice when the product fits within a flat construction and extra gusset capacity is not required.
Common applications include food processing, industrial components, medical product packaging, retail goods, distribution, and agriculture. Manufacturers use lay flat bags for efficient loading, product visibility, dependable seals, and specifications that can be repeated across ongoing packaging programs.
Types of Lay Flat Bags
Standard, side seal, bottom seal, food processing, industrial, and printed lay flat bags are application-specific options within our custom manufacturing program. Construction, dimensions, and film properties are selected around your packaging requirements.
Standard Lay Flat Bags
Simple polyethylene bags without expanding side or bottom folds. Custom widths, lengths, and gauges make them a versatile choice for product protection, packing, and everyday production requirements.
Side Seal Bags
Lay flat bags sealed along the sides, with dimensions and film properties selected around the product and packing process. Side-seal construction provides flexibility for presentation and packaging configurations.
Bottom Seal Bags
Bags with a seal across the bottom and an open top for filling. Consistent seal integrity and application-specific gauge support food processing, parts packaging, and industrial handling.
Food Processing Bags
Custom lay flat bags for food processors, ingredient handlers, and co-packers, with FDA-compliant virgin resin available for direct food contact and freezer-grade film for cold-storage applications.
Industrial Poly Bags
Polyethylene bags engineered around components, product weight, handling conditions, and storage needs. Material selection and film gauge support product protection during manufacturing and distribution.
Printed Lay Flat Bags
In-house flexographic printing adds logos, product information, handling instructions, and identification to custom lay flat bags as part of a coordinated manufacturing program.
Custom Lay Flat Bag Manufacturing
Every lay flat bag program starts with your product and process. We review product dimensions, weight, loading method, closure needs, storage conditions, and food-contact requirements before specifying the film and seal construction.
- Custom widths and lengths
- Custom gauges from 1–8 mil
- LDPE and LLDPE material selection
- Freezer-grade film for cold-storage applications
- In-house flexographic printing
- Food-contact materials specified for the application
As a custom poly bag manufacturer, California Plastix controls film extrusion, flexographic printing, and precision bag converting in-house at our Pomona facility. This supports quality control from polyethylene film through the finished bag. Explore our manufacturing capabilities.
Most customers rely on California Plastix for ongoing supply programs where production consistency, dependable lead times, and repeatable quality are critical to day-to-day operations.
Features & Benefits
Straightforward Flat Construction
No expanding folds on the sides or bottom, providing a clean package for products that do not require gusset capacity.
Application-Specific Dimensions
Custom widths and lengths help match the bag to your contents, loading process, and closure requirements.
Dependable Seal Integrity
Side-seal and bottom-seal options are specified around the product and handling conditions to help protect packaged items.
Material & Gauge Selection
LDPE, LLDPE, and custom gauges balance flexibility, strength, clarity, and protection for the application.
High-Clarity Presentation
High-clarity film supports product visibility, identification, and retail presentation where required.
Freezer-Grade Options
Film can be selected around cold-storage and handling conditions for food processing and temperature-sensitive packaging programs.
Custom Printed Packaging
Flexographic printing incorporates branding, product information, and instructions into the same manufacturing program.
Repeatable Production
Consistent dimensions, film gauge, and material specifications support recurring orders and day-to-day packing operations.
Product Specifications
| Specification | Details |
|---|---|
| Materials | LDPE and LLDPE; material selection matched to application requirements |
| Gauges | Custom film gauges from 1–8 mil |
| Dimensions | Custom widths and lengths to customer specifications |
| Printing | In-house flexographic printing for branding, identification, and instructions |
| Construction | Lay flat, side seal, or bottom seal |
| Manufacturing Location | Pomona, California — Made in the USA |
Food Contact Compliance
FDA-compliant virgin resin is available for direct food-contact applications.
Food-grade lay flat bags can be specified for food processors, ingredient handlers, agricultural packers, and co-packers. Food-contact suitability is reviewed during material selection rather than assumed for every bag.
Share your product, contact conditions, filling and storage temperatures, and documentation requirements so our team can recommend an appropriate resin, gauge, and construction.
Common Applications
Food Processing
Packaging for ingredients and processed foods, specified around filling methods, storage temperatures, and direct food-contact requirements.
Industrial Components
Product protection for parts and components during manufacturing, handling, and storage, with gauge selected for the contents.
Medical Packaging
Protective packaging for medical products and components, reviewed against the customer's requirements. Sterility and specialized barrier performance must be evaluated separately.
Retail Packaging
High-clarity or printed lay flat bags for product presentation, identification, and branded retail packaging.
Distribution
Consistent bag specifications for packing, organizing, and protecting products through warehouse and distribution operations.
Agriculture
Custom polyethylene bags for agricultural packing and product protection, matched to contents, handling, and storage conditions.
Industries Served
- Food processors and ingredient suppliers
- Industrial manufacturers
- Medical and pharmaceutical product suppliers
- Retail and ecommerce brands
- Packaging distributors
- Distribution and logistics operations
- Agricultural operations
- Co-packers and contract packagers
We work with purchasing and production teams to align bag specifications with their packing process, usage patterns, and replenishment needs.
The California Plastix Advantage
Direct Manufacturer
In-house film extrusion, flexographic printing, and converting support quality control throughout production.
Production Consistency
Repeatable dimensions, film gauges, and material specifications help maintain consistency across recurring lay flat bag orders.
Recurring Supply Programs
California Plastix is a manufacturing partner supporting ongoing packaging requirements with replenishment planning, dependable lead times, and consistent supply.
Application-Specific Engineering
Bag dimensions, seal construction, resin, printing, and food-contact materials are selected around your product and process.
Southern California Manufacturing
Manufactured in Pomona, California, supporting manufacturers, food processors, distributors, co-packers, and packaging operations throughout California and across the United States.
Responsive Technical Support
Work directly with our packaging team to review film properties, gauge, dimensions, and construction for your operation.
Frequently Asked Questions
What are lay flat bags?
Lay flat bags are polyethylene bags with two flat faces and no expanding folds on the sides or bottom. They provide straightforward packaging for food, parts, retail products, and other items, with custom dimensions, film gauges, and seal constructions.
What is the difference between lay flat and gusseted bags?
Lay flat bags have no expanding folds. Gusseted bags include folded side or bottom panels that open when filled to create extra depth and capacity. Lay flat bags suit products that fit within a simple flat construction; gusseted bags accommodate greater volume or irregular shapes.
Are food-grade lay flat bags available?
Yes. FDA-compliant virgin resin is available for direct food-contact applications. Material selection should account for the food product, contact conditions, filling and storage temperatures, and required documentation.
Can lay flat bags be custom printed?
Yes. California Plastix offers in-house flexographic printing for logos, branding, product identification, and handling instructions. Printing requirements are incorporated into your custom bag specification.
What materials are available?
LDPE and LLDPE are available for custom lay flat bags. Resin and film selection depend on clarity, flexibility, strength, handling conditions, food-contact requirements, and whether freezer-grade film is needed.
Can bags be produced to custom dimensions?
Yes. Width, length, and film gauge are custom-engineered to your product and packing process. Share your product dimensions, loading method, and closure requirements so our team can recommend an appropriate specification.
What industries use lay flat bags?
Lay flat bags are used in food processing, industrial manufacturing, medical and pharmaceutical product packaging, retail, distribution, agriculture, and co-packing operations. Requirements are reviewed for each application; medical packaging suitability is not a blanket certification or sterility claim.
Where are your lay flat bags manufactured?
California Plastix manufactures lay flat bags in Pomona, California, with in-house film extrusion, flexographic printing, and bag converting. We support customers throughout California and across the United States.
Explore Related Products
Build a Reliable Lay Flat Bag Program
Share your dimensions, contents, handling conditions, printing requirements, and ongoing usage. Our team will recommend a lay flat bag specification for your operation.
Lay Flat Bag Price Estimator
Enter your size, thickness, quantity, and material for a budgetary estimate. Final pricing depends on resin market, printing, packaging, and freight.
- Per 1,000 bags
- $47.77 – $59.45
- Estimated resin weight
- 720 lbs
Budgetary estimate only — not a firm quote. Printing, custom packaging, and freight are quoted separately.
Request a Firm Quote