Poly Bags & Packaging for the Inland Empire

The Inland Empire is the warehouse capital of the United States, with more than a billion square feet of distribution space spread across Riverside and San Bernardino counties. Every one of those buildings consumes flexible packaging — pallet covers, poly bags, box liners, stretch film, trash liners — in volumes that reward buying directly from a manufacturer. M Plastics extrudes, prints, and converts poly bags in Los Angeles, less than sixty miles from the heart of the IE.

Inside the IE's warehouse corridors

The region's logistics engine is built on specific corridors. The I-10 and I-15 interchange around Ontario anchors the airport-adjacent warehouse core. Fontana, Rialto, and Bloomington line the old Route 66 industrial belt with big-box distribution. Moreno Valley and Perris have absorbed enormous fulfillment campuses along I-215, while Chino, Eastvale, and Jurupa Valley fill in the western edge. Ontario International Airport, among the fastest-growing cargo airports in the country, keeps pulling more freight activity inland from the coast.

Packaging for fulfillment, manufacturing, and rock yards

Different IE operations pull different products from our lines. Fulfillment centers run lay flat bags and suffocation-warning poly through pick-and-pack stations and cap outbound loads with pallet covers. Manufacturers in Ontario and Rancho Cucamonga bag parts in gusseted poly and protect metal components with corrosion-inhibiting packaging. Food processors and cold storage operations use food-grade liners produced under our FSSC 22000 system. And the IE's hundreds of landscape and rock yards are a market of their own — our heavy-mil rock bags are built to hold sharp aggregate without tearing, with custom printing available for branded yards.

Manufacturer-direct film for high-volume operations

Because we run our own LDPE and LLDPE blown film extrusion, IE buyers are not limited to distributor stock. We set film mil thickness, width, and construction at the extruder, then convert and print in-house up to 6 colors. High-volume operations get a supply partner that can scale a specification across repeat runs with consistent film properties — the thing that actually matters when a bag jams a bagging station or a liner fails on a compactor. Contact sales for specifications on any custom construction.

Geography does the rest. Packaging is heavy, low-density freight, and the IE sits one short drayage-style haul from our dock in Los Angeles. That proximity cuts freight cost per unit, shortens the reorder cycle, and removes the cross-country transit risk that comes with Midwest or Southeast suppliers. For operations measured in truckloads per week, a manufacturer on the other side of the county line is a structural advantage, not a convenience.

Printed poly for Inland Empire brands

There is also a growing print story in the IE that goes beyond rock yards. As more consumer brands operate their own fulfillment in the region, demand has risen for branded poly — printed bags for outbound orders, retail packaging staged alongside inventory, and marked industrial bags that identify contents and handling on a busy dock. Our flexographic presses run up to 6 colors on film we extruded ourselves, which means the print job and the film specification are engineered together rather than negotiated between two separate vendors. One purchase order covers extrusion, printing, and converting, and repeat runs come back with the same film properties and the same registration — the consistency that automated fulfillment equipment quietly depends on. We supply Ontario, Riverside, San Bernardino, Fontana, Moreno Valley, and every industrial pocket in between — manufacturer-direct, ISO 9001 certified, with two decades of Southern California production behind every order.