Side Seal Equipment Film Sizing

Side Seal Equipment

Recently, automatic side sealing equipment has become quite popular. Product is fed into a flighted or belted infeed where it is fed into a horizontal tube of film which is formed by an inverted film forming plow (or similar system) with centerfolded or singlewound film (coming off of a centerfolding device). A side seal system uses wires, ribbons and other thermal devices to weld the seal along the open centerfolded edge in the machine direction. Hot knives or seal wires upstream complete the package with transverse seals. The primary advantage to this type of system is its moderate range speeds (usually to 60 packages per minute) and its rapid changeover which accommodates a wide range of products.

Side Seal Wrappers Film Sizing Formulas

Singlewound Film Width:

2W + 2H + 3.0"
(2 x Product Width) + (2 x Product Height) + 3.0"

Centerfold Film Width:

W + H + 1.5"
(Product Width) + (Product Height) + 1.5"

Cut Off:

L + 2H
(Product Length) + (2 x Product Height)

Singlewound Film Usage:

FW x CO = Film Usage Per Pkg w\ Side Seal
(Total film usage per-package in square inches)

Centerfold Film Usage:

(FW x CO) x 2 = Film Usage Per Pkg w\ Side Seal
(Total film usage per-package in square inches)

REMEMBER: Actual film sizing and usage is highly dependent upon operator technique and machine set-up. Actual sizes can only be determined after running the machinery under normal production conditions.

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