Unit for producing a tube with a tube wall composed of flexible material webs

A unit for producing a tube with a tube wall composed of flexible material webs which comprises:

• guide rollers;
• a core freely mounted on said guide rollers and made of core segments coupled with one another and having a width and an axis;
• clamping shafts projecting over the width of the core;
• reels mounted on the clamping shafts including material webs in a plurality of stations over and under the core, wherein said reels are offset with respect to the axis of the core and wherein said core extends through said plurality of stations and wherein said webs are guided around said guide rollers onto said core;
• and a cylinder downstream of the core being coupled to a front end of the core, wherein the core is followed by a resin station including a circular outer casing and an inner cylinder, wherein said cylinder includes a constriction and forms a resin chamber, wherein the circular outer casing and inner cylinder form a slit therebetween, wherein a formed tube is guided and calibrated through the slit, including a feed line for the resin extending through the core, including a fork downstream of the core for opening an inner covering of the tube, and a cord extending through the core holding said fork.

A unit for producing a tube with a tube wall composed of flexible material webs which comprises:

• guide rollers;
• a core freely mounted on said guide rollers and made of core segments coupled with one another and having a width and an axis;
• clamping shafts projecting over the width of the core;
• reels mounted on the clamping shafts including material webs in a plurality of stations over and under the core, wherein said reels are offset with respect to the axis of the core and wherein said core extends through said plurality of stations and wherein said webs are guided around said guide rollers onto said core;
• and a cylinder downstream of the core being coupled to a front end of the core, wherein the core is followed by a resin station including a circular outer casing and an inner cylinder, wherein said cylinder includes a constriction and forms a resin chamber, wherein the circular outer casing and inner cylinder form a slit therebetween, wherein a formed tube is guided and calibrated through the slit, including a feed line for the resin extending through the core, including a fork downstream of the core for opening an inner covering of the tube, and a cord extending through the core holding said fork, wherein said resin station is followed by a drawing station for transporting the tube through the unit, wherein said drawing station includes driven rollers and a flat belt wrapping therearound and a vertically adjustable driven roller between the driven rollers, wherein the belt runs through the driven rollers and around the vertically adjustable roller with the formation of a loop within which the tube is carried.