Method for forming biodegradable bags
AssigneeOtium Packaging Technology BV
InventorsJacobus Cornelis Rasser, Hendrik Jan van den Berg
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Abstract
A method is disclosed for forming a package of a non-weldable material on a vertical form-fill-seal (VFFS) machine or a horizontal form-fill-seal (HFFS) machine. The method comprises providing a continuous web of the non-weldable material having exposed areas of adhesive. In an embodiment the method is implemented on a VFFS machine that has a fill tube designed and configured to avoid interaction with the adhesive exposing areas of the web. In a preferred embodiment the adhesive exposing areas are formed by providing a repeating pattern of sets of apertures in the web, and fully covering each set with a label that is coated with adhesive.
Claims15
A method for making a biodegradable package on a form-film-seal machine, said method comprising the steps of:
- a. providing a continuous web of a biodegradable material, said web having a machine direction and a cross-machine direction;
- b. providing on the web discrete areas of exposed adhesive;
- c. forming a seal in the machine direction of the web by adhering overlapping edges of the web to one another;
- and
- d. forming seals in the cross-machine direction of the web using the discrete areas of exposed adhesive,
- wherein the discrete areas of exposed adhesive are formed by providing apertures in the web, said apertures being arranged in sets, and by applying adhesive labels to the web so that each adhesive label covers a set of apertures.
A method for making a biodegradable package on a form-film-seal machine, said method comprising the steps of:
- a) providing a continuous web of a biodegradable material, said web having a machine direction and a cross-machine direction and comprising apertures arranged in a pattern of repeating sets along the cross-machine direction of the web;
- b) providing on the web discrete areas of exposed adhesive, wherein the discrete areas of exposed adhesive are formed by applying labels to the web so that each label covers a set of one or more of the apertures;
- c) forming a seal in the machine direction of the web by adhering overlapping edges of the web to one another;
- and
- d) forming seals in the cross-machine direction of the web using the discrete areas of exposed adhesive.
Dependencies are inferred from the claim text.