A method for the production of a sealing tape roll of flexible, compressible foam with at least one barrier layer extending in the radial direction, which is arranged axially between two layers of foam. The method includes providing a foam web of a flexible foam; applying a first barrier layer to a first surface of the foam web; and introducing at least one first cut into the first surface of the foam web and introducing at least one second cut into a second surface of the foam web opposite the first surface to form parallel sealing tape strips. A connecting section remains between two adjacent sealing tape strips. The sealing tape strips are then folded over in the area of the connecting sections to produce a foam-barrier layer web, and the foam-barrier layer web is wound up into a sealing tape roll.

A method for the production of a sealing tape roll of flexible, compressible foam with at least one barrier layer extending in the radial direction, which is arranged axially between two layers of foam. The method includes providing a foam web of a flexible foam; applying a first barrier layer to a first surface of the foam web; and introducing at least one first cut into the first surface of the foam web and introducing at least one second cut into a second surface of the foam web opposite the first surface to form parallel sealing tape strips. A connecting section remains between two adjacent sealing tape strips. The sealing tape strips are then folded over in the area of the connecting sections to produce a foam-barrier layer web, and the foam-barrier layer web is wound up into a sealing tape roll.

A sealing tape roll includes a sealing tape wound up into the sealing tape roll. The sealing tape has at least one first barrier layer, which extends in a longitudinal direction of the sealing tape parallel to side surfaces of the sealing tape. The sealing tape also includes a plurality of second barrier layers, which extend over at least 50% of a width of the sealing tape roll between opposite end surfaces of the sealing tape roll. In addition, the sealing tape has a plurality of sealing tape sections, which, in an unwound state of the sealing tape, are arranged behind each other in a row in the longitudinal direction, and a second barrier layer is arranged between each pair of adjacent sealing tape sections.

A sealing tape roll includes a sealing tape wound up into the sealing tape roll. The sealing tape has at least one first barrier layer, which extends in a longitudinal direction of the sealing tape parallel to side surfaces of the sealing tape. The sealing tape also includes a plurality of second barrier layers, which extend over at least 50% of a width of the sealing tape roll between opposite end surfaces of the sealing tape roll. In addition, the sealing tape has a plurality of sealing tape sections, which, in an unwound state of the sealing tape, are arranged behind each other in a row in the longitudinal direction, and a second barrier layer is arranged between each pair of adjacent sealing tape sections.

A sealing tape roll comprises a sealing tape of flexible, compressible foam with at least one interior barrier layer. The sealing tape is wound up into the sealing tape roll in such a way that a top surface of one turn rests against a bottom surface of an adjacent turn of the sealing tape roll, and side surfaces of the sealing tape form end surfaces of the sealing tape roll. The sealing tape comprises a plurality of foam plies, which are arranged one above the other in a thickness direction between the bottom and top surfaces of the sealing tape. A barrier layer is between each pair of adjacent foam plies. The at least one barrier layer extends over at least 50% of the width of the sealing tape roll between the opposite end surfaces of the sealing tape roll and in a longitudinal direction of the sealing tape.

A sealing tape roll comprises a sealing tape of flexible, compressible foam with at least one interior barrier layer. The sealing tape is wound up into the sealing tape roll in such a way that a top surface of one turn rests against a bottom surface of an adjacent turn of the sealing tape roll, and side surfaces of the sealing tape form end surfaces of the sealing tape roll. The sealing tape comprises a plurality of foam plies, which are arranged one above the other in a thickness direction between the bottom and top surfaces of the sealing tape. A barrier layer is between each pair of adjacent foam plies. The at least one barrier layer extends over at least 50% of the width of the sealing tape roll between the opposite end surfaces of the sealing tape roll and in a longitudinal direction of the sealing tape.

A core for winding sheet material is proved. The core comprises a cylindrical tube having a longitudinally oriented slot formed therein, and a strip of soft material located in the slot. Because of the geometry of the slot and the strip, the strip may be softer in the central region but firmer where the core transitions from the relatively soft strip to the relatively hard tube. The leading edge of the sheet material imbeds itself into the soft central region of the strip as additional layers are wound around the core.

A core for winding sheet material is proved. The core comprises a cylindrical tube having a longitudinally oriented slot formed therein, and a strip of soft material located in the slot. Because of the geometry of the slot and the strip, the strip may be softer in the central region but firmer where the core transitions from the relatively soft strip to the relatively hard tube. The leading edge of the sheet material imbeds itself into the soft central region of the strip as additional layers are wound around the core.

A winder includes a winding mechanism, a chamber, a vacuum pump, a conveying route and a product case. The winding mechanism winds a belt-shaped raw film around a winding core, the belt-shaped raw film being composed of a plurality of electrodes and a plurality of separating films. The chamber houses the winding mechanism. The vacuum pump sucks air into the chamber. The conveying route has a sealed outer space outside the chamber, an inner space of the chamber leading to the outer space in the conveyance route. The product case is disposed in the conveying route to house a plurality of winding products each formed by winding the raw film with use of the winding mechanism.

Multi-functional coilable thin-walled structures that can be implemented within space-based satellite modules, and methods for their manufacture are provided. Multi-functional coilable thin-walled structures are comprised of at least one longeron that is capable of rolling and collapsing upon itself. In some embodiments, the coilable thin-walled longeron is a flange longeron. The flange longeron contains at least two major regions: a web and a plurality of flanges. The web region comprises portions of flanges that are bonded to one another. The plurality of flanges separate from one another on the same end of the web region. The plurality of flanges are similar in thickness and shape.