Normally window bags are suitable for packaging bakery, coffee, leaf tea, granola, cereal, chocolate, nuts, cookies and dried fruit. These bags are made from food safe material. With a clear window on the front face, the products can be viewed easily and are presented in a tasteful and attractive way.

Normally we have the 2 kinds of the window paper bags:

V-Sharp bottom window paper bag

V/Sharp bottom window paper bag

Square bottom window paper bag

Square bottom window paper bag

Part 1. For the V bottom paper bag with window

For the V bottom paper bag with window, we have a machine model 250J and 350 J, adopt the Robatech hot melt gluing machine from Switzerland. And the plastic window details are, material: BOPP, PET, Thickness: 0.022-0.035mm

A. Main Technical Parameter Of 250J/G350J

ModelRZJD-G250Jpaper bag size drawing
Length Of Cutting Bag110-460mm
Bag Length100-450mm
Bag Width70-250mm
Insert Size20-120mm
Bag Mouth Height15/20mm
Bag Speed50-350pcs/min or 70 meters/min
Paper Feed Width100-760mm
Paper Material Diameter200-1000mm
Paper Material Thickness35-80g/m²

B. Robatech hot melt gluing machine from Switzerland

Robatech hot melt gluing machineRobatech hot melt gluing machine

Advantage: no interruption no matter of low speed, middle speed or high speed, and its performance is quite steady.

Switzerland automatic gluing gunjetSwitzerland automatic gluing gunjet

Advantage: It is very easy to adjust the glue output flow, its performance quite steadily. Thanks for the gunjet, there is no need to adjust the output glue flow and assemble high heat protector, it is safe to the operator.

C. We also support the hot perforation needle effect.

Plastic Window With Hot Perforation Needle Function UnitPlastic Window With Hot Perforation Needle Function Unit

Craft Paper bag with hot perforation needleCraft Paper bag with hot perforation needle

D. The full video of V bottom bag with pls click below Link:

Our V Bottom Paper Bag with Window GalleryOur V Bottom Paper Bag with Window Gallery

Part 2. For the square bottom paper bag with window

For the square bottom paper bag with window, we have FD190 and FD330 and normally have the Strip window type and Die Cutter window Type to achieve.

Strip window Type paper bag

Strip Window Type Paper Bag

Die Cutter window Type Paper Bag

Die Cutter Window Type Paper Bag

A. StripWindow Type is very common and relatively simple and easy to handle. Strip window size is 60-150mm. Below is the drawing and our bag.

Strip Window Type StructureStrip Window Type Structure and Our Bag

B. Die Cutter window type(Die cutter Hole Width/Height is 50-140mm)has2 methods to achieve. One Full Type-is sticking is to punch, apply glue, and then cover the hole with a plastic film. Another is The structure of die-cut handle is used to replace the reinforced paper sheet with a fixed-length cut of plastic film, and to position the glue.

Die cutter Window Type StructureDie cutter Window Type Structure and Our Bag

Die-Cutter-Window-Full-Type

Die Cutter Window Full Type

Die Cutter Window Piece Type

C. Below pls find our most popular model FD330 related technical parameters:

paper bag machine data

D. The full video of V bottom bag with pls click below Link:

FULL TYPE

TPIECE TYPE

Our Square Bottom Paper Bag with Window GalleryOur V Bottom Paper Bag with Window Gallery