WICKET BAG

Abstract

The invention relates to a method for producing a bag, in which method a bag is produced from a fiber material, preferably a paper material, wherein a web made of the fiber material, preferably a paper web, is unwound as a flat web, thereafter sequential adhesive strips are applied in continuous operation, thereafter the flat web is folded to form a bag shape, thereafter the adhesive strips are activated, for connection, by the application of heat, and thereafter individual bags are cut from the flat web by means of a cutting device.

Claims

1. A method of making a bag of making a bag of a fibrous material, the method comprising the steps of sequentially: providing a flat web of the fibrous material, preferably a paper web, applying a plurality of spaced adhesive strips to at least one face of the web, folding the flat web with the strips to form a half sleeve, activating the adhesive strips are activated by heat action to adhere the half sleeve together, and cutting individual bags from the flat web.

2. The method according to claim 1, wherein the adhesive strips or PE strips are applied and activated as sequential adhesive strips.

3. The method according to claim 1, wherein the flat web is folded to form a wicket bag.

4. The method according to claim 1, 2, wherein the action of heat is realized by welding bars.

5. The method according to claim 1, 2, wherein individual bags are cut from the flat web by a knife.

6. A method of making a bag, the method comprising the steps of sequentially: providing a flat compostable and longitudinally extending web; providing on a face of the web a plurality of longitudinally spaced and transversely extending full-width strips of heat-activatable adhesive; folding the web bearing the strips along a longitudinal centerline to form an upper layer and a lower layer with the strips between the layers and fold the strips over on themselves; heat activating the strips to bond the layers together at the strips; and subdividing the web at the strips to form the bags.

Description

[0007] The course of a manufacturing method according to the invention, for which purpose the device described above can be used (but does not have to be used, since differently operating devices with the same aim for making improved bags can be used), is shown in the drawing.

[0008] An adhesive, preferably adhesive strip, is applied to the schematically illustrated flat web of a fiber material that is preferably recyclable or alternatively compostable, as a feed-dependent strip 2 on the flat web. This is followed by folding of the flat web at 3 to form a two-layer preform 4. Strips can preferably be applied to both faces of two-layer preform 4 (but application to only a single face could also be considered) and is fed to an activation and/or welding station 5. In the case of the activation station, the latter is designed for heat generation, in that the thermal treatment (heat) generated there acts activates the applied adhesive. This is followed by deposition of the bags at 6.

LIST OF REFERENCE SIGNS

[0009] 1 Rotary applicator [0010] 2 Strips applied to the flat web [0011] 3 Folding the flat web to the two-layer preform [0012] 4 Opposite application two-layer preform [0013] 5 Activation/welding station [0014] 6 Bag deposition