Polyethylene Plastic Bags for Garments

If a garment travels in a plastic bag, the bag is almost certainly polyethylene. Polyethylene — PE — is the world's most produced plastic and the apparel trade's default bag film: tough for its weight, flexible at room temperature and below, resistant to moisture, sealable with heat, and inexpensive enough to protect a single shirt. This page is about the material itself — its two great grades, low-density and high-density — because choosing between them, and setting the gauge, is most of what specifying a garment bag involves.

LDPE and HDPE: The Two Working Grades

Low-density polyethylene, LDPE, is the softer, clearer, more flexible grade — the film of the standard garment bag. It drapes rather than crackles, stretches a little rather than splitting, and seals readily across a wide temperature window, which forgives the variation of real packing benches. Most flat, gusseted and garment bags for clothing are LDPE or LDPE-rich blends for exactly these working virtues.

High-density polyethylene, HDPE, is the harder, stronger and slightly heavier grade, with a crisper, more papery hand and a hazier clarity. Where a bag must carry more load in less film — thin-gauge merchandise and T-shirt style bags are the classic case — HDPE's strength per micron earns its place. The trade-off is feel and window quality: HDPE shows the garment less clearly and announces itself with a rustle LDPE does not make.

Between and around the two sit the blends and co-extrusions that manufacturers use to tune a bag: a film can be built in layers — the CO-EX construction named in one listing below — putting strength, clarity and seal performance where each is needed in the film's thickness. For the buyer, the practical reading is simple: name the grade, the gauge and the job together, and let the manufacturer's film knowledge fill in the construction.

Why Polyethylene Won the Garment Bag

Polyethylene's virtues line up with a garment's journey. It does not absorb water, so a splash or a damp carton does not reach the clothing. It stays flexible in a cold trailer. It tolerates the scuffing of carton packing and rail handling without the splitting that stiffer films suffer, and it heat-seals into the watertight, airtight seam that makes a bagged garment a finished unit.

It is also, used plainly, a recyclable material: used PE can be recycled through re-melting, although there is a quality loss in the process — a fact that shapes honest recycling claims for bag programmes and makes clean, unprinted, single-material bags the most recyclable specification a buyer can choose. The definitions linked below give the material vocabulary — polyethylene itself, HDPE, and the plastic bag as a product — in full.

Against these virtues stand the material's two honest limits: standard PE is slightly hazy beside polypropylene and cellophane, so presentation-led programmes look to those films; and PE's stretch, forgiving in handling, makes it a poor choice where a bag must hold a rigid shape. Within those limits, it is the material the industry's bag factories — including the manufacturers listed here — are built around.

Polyethylene Plastic Bags — Suppliers & Manufacturers

Specifying Polyethylene Bags in Practice

Specify grade and gauge against the garment's weight and the journey's handling, then test with the real garment: a bag that seals beautifully empty can still strain at its side seals under a heavy folded coat. Add venting where sealed bags will be cartoned tight, and choose slip level for the bench — hand bagging wants an easy-opening, free-sliding film; machine bagging wants the opposite discipline.

Finally, keep the material identity clean. A programme that stays with one PE family, minimal print and no mixed-material additions holds the strongest end-of-life story the material can offer — and, not coincidentally, usually the lowest film cost per garment protected.