Custom Manufacturing

Side Gusset Bags & Liners

Expanding side gussets for larger or irregularly shaped items, plus custom container liners.

Side gusset bags are designed to expand and conform to larger or irregularly shaped items. The side folds open to create additional space, making these bags ideal for lining boxes, bins, drums, and other containers where protection and containment are essential.

Looking for bottom-gusset options? Click here to learn more.

Features & Options

Features

  • Expanding side gussets create a form-fitting shape for bulkier items.
  • Ideal for lining boxes, bins, drums, and other containers.
  • Smaller front panel on larger bags improves handling and transport.
  • Manufactured with FDA/USDA-approved virgin resin for compliant applications.
  • Strong seal integrity helps protect and secure packaged contents.
Customize It

Options

  • Custom liners and bags from 6 inches to 70 inches wide.
  • Roll sizes available up to 24-inch diameter.
  • LDPE & LLDPE gauges ranging from 1 mil to 8 mil.
  • Additives available: slip, color, anti-stat, UV protection, and more.
  • Freezer-grade film available for cold-storage applications.
  • Fully customizable sizes, styles, and configurations.
California Plastix Advantage

Why customers choose California Plastix

Consistent, High-Quality Manufacturing

Tight production standards for uniform results across every order.

Fast Lead Times

Local Southern California manufacturing keeps turnaround times short and predictable.

Competitive Pricing

Custom products without inflated custom-order markups.

Fast Responses

Quotes and communication handled quickly to keep your projects moving.

Flexible Order Quantities

Ideal for both small custom runs and large recurring programs.

Real Support, Real People

Direct access to a Pomona-based team that actually picks up the phone.

Made in the USA

Domestic production for quality control and faster delivery.

Industries Served

Trusted by manufacturers and brands across key markets

  • Industrial manufacturing
  • Food packaging
  • Distribution & logistics
  • Agriculture

Ready to get pricing?

Most quotes answered within 24 hours.

Request a Quote
FAQ

Frequently asked questions

Yes — every order is built to your exact specs.