I set the lip above a PE ziplock bag zipper from the filling method, finger access, final heat seal, tear notch, hang hole, and artwork. Buyers should not copy one universal dimension. They should approve the open, filled, sealed, and reopened bag on the intended packing line.

I size a side-gusset bread bag from the cooled loaf’s maximum width, height, length, closure allowance, and packing method. The gusset must open around the loaf without tight corners or excessive loose film. Buyers should approve repeated filled samples before setting bulk dimensions.

I choose a flat-bottom coffee bag when a stable base and multiple display panels support the retail plan. I choose a side-gusset bag when its folded format and existing packing method fit better. Buyers should confirm either choice with filled line, shelf, and carton trials.

I choose natural kraft for a warmer, fiber-visible background and white kraft for a brighter, more neutral print base. Buyers should approve artwork on the actual paper, then specify the complete laminate, sealing, barrier, window, closure, product, and process requirements separately.

I choose a pillow pouch for single-serve snacks when compact packs and form-fill-seal output lead the decision. I choose a stand-up pouch when upright display or reclosure matters. The final choice must match the product, portion, equipment, merchandising, and case pack.

Buyers should match pouch texture to the machine: external suction sealers generally need embossed channels, while chamber machines commonly use smooth pouches. Confirm bag size, seal-bar fit, product shape, and sealing settings through trials on the actual equipment before bulk ordering.

Buyers should add a die-cut carry handle when filled testing confirms easier lifting and pouring without crowding seals, gussets, or closures. The final choice should match the bag format, packed weight, filling process, artwork, distribution pack, and expected consumer use.

Buyers should add a bottom board when the product needs a flatter base, wider load distribution, or better shape while carried and displayed. The decision should follow filled-bag testing with the actual product, paper bag structure, handles, moisture exposure, and packing method.

Buyers should specify core inside diameter, core width, maximum finished roll outside diameter, and maximum roll weight from their unwinder limits. They should also confirm web width, winding direction, film length, splice rules, and handling method before approving bulk packaging film.