| 摘要 |
<p>The present invention pertains to a method and a device for producing a pipe (10) from plastic foil material, whereby an endless outer foil and an endless inner foil (12, 14), at least one of which (12, 14) has on its side (16, 20) turned to the other foil a gluing surface (18), are wound either spirally or axially offset or overlapping in the same direction of winding or parallel to each other or transversally, so that the pipe (10) has no glue either on its outer side (22) nor on its inner side (24). During the production it is ensured that both endless foils have a gluing side so that they can adhere to each other during the winding process. Such a pipe (10) is designed, among other things, to fully wrap or hermetically close quadrangular straw hulls, grass hulls and similar products or to sealingly close cylindrical straw hulls, grass hulls, etc.</p> |
