Plain Flat Bottom Coffee Bags Suppliers

What Our Plain Coffee Bag Range Covers

Plain coffee bags carry the same film engineering as our printed coffee packaging, but ship without brand graphics so they can be labeled, stickered or filled for sampling, white-label and bulk programs. The range sits inside our broader Coffee Packaging Bag family and is built around two stocked structures.

• Flat bottom coffee bags — rectangular base, gusseted sides, stable on shelf and in cartons; suited to whole bean and ground coffee.
• Aluminum foil coffee bean bags — foil-bearing laminate for low oxygen and moisture transmission where shelf life is the priority.
• Sticker-ready plain stock — matte or gloss surfaces that accept pressure-sensitive labels cleanly.
• Custom sizes and structures — built to the fill weight, valve requirement and packing line rather than a fixed catalog.

Two stocked items anchor the category: the 250g,500g,1 kg Plain Aluminum Foil Coffee Bean Bag and a sticker-label version of the same format. Both are produced as Plain Coffee Bag manufacturer stock for buyers who need bags before artwork is finalized.

Application Fit: Whole Bean, Ground and Powder

Whole bean coffee releases carbon dioxide for days after roasting, so the bag must block oxygen and moisture while managing internal pressure. Ground coffee and powder expose far more surface area to oxidation and moisture pickup, which pushes the requirement toward a lower oxygen transmission rate and a tighter seal.

Materials and Barrier Engineering

We build plain coffee bags from food-grade films rather than single-layer polyethylene. The barrier layer does the preservation work; the sealant layer does the closing work; the outer layer carries print or label adhesion and mechanical strength.

• PA/PE — balanced toughness and moisture barrier for standard roast coffee.
• PA/EVOH/PE — EVOH layer for low oxygen transmission where shelf life is critical.
• Aluminum foil laminate — light, oxygen and moisture blocking for long-distribution coffee.
• Mono-material options — recyclable structures through our Mono-Material Package range for sustainability-driven programs.

Thickness, layer count and barrier grade are matched to the roast level, fill weight and target shelf life. Light roasts and oily dark roasts behave differently against the sealant layer, so we confirm the film build against the actual product before production.

Configuration Options

Plain does not mean fixed. The bag is configured around the filling line and the retail or foodservice channel.

• Format: flat bottom, stand-up, side gusset or flat pouch.
• Closure: heat seal, resealable zipper, slider zipper or tin tie.
• Degassing: one-way valve position and diameter for whole bean and ground coffee.
• Surface: matte, gloss or tactile finish for label adhesion.
• Size: 250g, 500g, 1kg stock formats plus custom dimensions.

Capacity, Accuracy and Line Integration

Our printing and lamination capacity supports both stocked plain bags and custom runs. Plain stock is produced in white and black public versions so buyers can move quickly on sampling and short programs, while custom structures follow the normal tooling and lamination route.

For automated filling, we confirm the bag’s opening width, gusset depth and seal zone against the filler’s jaw geometry. Flat bottom bags need a stable base for pick-and-place and a consistent seal band for hermetic closure; zipper and valve placement must clear the filling nozzle and the sealing jaws. We supply dimensioned drawings before tooling so the line interface is agreed in advance.

Quality Control and Acceptance

Production runs under ISO 9001, HACCP, BRC and GMP systems, with batch traceability from raw material to finished bag. Inspection covers the properties that determine whether a coffee bag performs in the field.

• Tensile strength and puncture resistance of the laminate.
• Seal strength and seal integrity across the full seal band.
• Oxygen and moisture barrier performance of the film structure.
• Dimensional check on width, height, gusset and valve position.
• Print or surface check for label adhesion on plain stock.

Inspection reports are issued per batch, and final goods are inspected against the agreed specification before packing. Where a customer requires it, we run transport and freeze simulation to confirm the bag survives the distribution route.

Information We Use to Configure Your Solution

A workable plain coffee bag proposal depends on a small set of project inputs. We use these to select the film structure, size and closure rather than quoting a generic bag.

Customization, Documentation and Delivery

Plain bags can stay plain or move into a branded program later. When artwork is ready, the same structure can be produced as a Custom Printing Bag without re-engineering the film. For low-volume launches, digital printing keeps the entry quantity practical.

Documentation includes material and structure confirmation, dimensional drawings, inspection reports and packing specifications. Bags are packed in cartons sized for the format, with palletization and shipping arranged from our Shanghai location. Spare parts and service support cover the consumable items on the filling line — valves, zippers and seal settings — rather than the bag itself.

Frequently Asked Questions

Are plain coffee bags suitable for both whole bean and ground coffee?

Yes. We select the barrier structure and valve configuration for the coffee form. Whole bean needs pressure management for post-roast degassing; ground coffee needs a tighter oxygen barrier because of the larger exposed surface area.

What sizes do you stock as plain bags?

White and black public-version bags in 250g, 500g and 1kg formats are held as stock. Other sizes are produced to order against the fill weight and line dimensions.

Can I add my own label to a plain coffee bag?

Yes. Plain stock is produced with a label-ready surface, and we can supply matching Sticker Label options so the bag and label are specified together for adhesion and finish.

Which materials do you use for high-barrier coffee bags?

We use PA/PE and PA/EVOH/PE co-extruded structures, and aluminum foil laminates where maximum light, oxygen and moisture blocking is required. Layer count and thickness are matched to the shelf-life target.

How do you confirm the bag will run on my filling line?

We work from the filler’s jaw geometry, opening width and speed. Dimensioned drawings are issued before tooling, and seal and dimensional checks are performed on the finished bag before delivery.

What quality documentation is provided?

Production runs under ISO 9001, HACCP, BRC and GMP systems with batch traceability. Inspection reports covering seal strength, barrier performance and dimensions are issued per batch.