A paper tube making and cutting machine includes a fixed rod, a paper tape winding mechanism, an angle measurement unit, a length measurement unit, a cutter, and a drive mechanism. The paper tape winding mechanism wraps or winds at least one paper tape around the fixed rod to form a paper tube. The angle measurement unit measures an angle of the paper tape winding mechanism or the paper tape relative to the fixed rod. The length measurement unit measures a conveyed length of the paper tape. The drive mechanism determines and sets a moving speed of the cutter along the fixed rod according to the angle and the conveyed length, such that the moving speed of the cutter is corresponding to or close to a producing speed or generation rate of the paper tube formed on the fixed rod, in order to prevent the paper tube from pushing a side surface of the cutter or to prevent the cutter from pulling and stretching the paper tube to thereby improve durability of the cutter and the quality of a cut paper tube.

The invention relates to the technical field of bamboo products machining, in particular to a bamboo straw machining method, comprising: connecting two or more bamboo pieces to form a bamboo strip, continuously winding the bamboo strip according to a preset helical angle to form a cylinder, and cutting the cylinder according to a preset interval to form straws. Compared with traditional methods, the method has the following advantages: bamboo pieces are continuously connected to obtain a bamboo strip for continuous production, then the continuous bamboo strip is continuously wound to obtain a cylinder which is good in mechanical property, stable in structure and uniform in appearance, and finally, the cylinder is cut at equal intervals to continuously produce bamboo straws that are highly consistent in specification and performance; and the working efficiency is improved by over 20% on the whole. Labor and equipment costs are greatly reduced.

A box suitable for the packaging of a consumer product is formed by helically wrapping an elongated continuous strip of material around a mandrel to form a main body with a plurality of bands. In one embodiment, adjacent bands partially overlie one another to form a multi-paneled main body with an open top end and an open bottom end. An adhesive is disposed within the region of contact between adjacent bands to retain the shape of the main body. First and second sets of slots are formed in the main body to create flaps dimensioned to selectively enclose the open top and bottom ends, respectively. To define the flaps and promote pivotal articulation, the main body is also preferably provided with score lines. By adjusting the configuration of the mandrel, a customized box can be constructed that is sized to receive a consumer product with limited wasted space.

A paperboard carrier suitable for use with textiles may include one or more strips of paperboard secured together to form a hollow tubular body, the body having an outer surface, and a coating covering some or all of the outer surface. The coating comprises a coating agent such as a silicon resin dispersed in a solvent such as isopropyl alcohol and little or no water. The coating may be applied to the outer surface by using a plurality spray nozzles arranged axially or circumferentially about the carrier.

A system comprising a mandrel, a winding device for helically winding strips around the mandrel to form a base tube moving away from the mandrel at a tube speed, a strip suppling device for supplying the strips to the winding device, and a cutting device for cutting the base tube at a predetermined length to form the lengths of tube while the base tube is moving in a tube direction at the tube speed, and a method.

A system comprising a mandrel, a winding device for helically winding strips around the mandrel to form a base tube moving away from the mandrel at a tube speed, a strip suppling device for supplying the strips to the winding device, and a cutting device for cutting the base tube at a predetermined length to form the lengths of tube while the base tube is moving in a tube direction at the tube speed, and a method.

A tearable core, adapted for winding a sheet product, includes a cylindrical body wall defining a longitudinal hole of longitudinal axis XX′. The cylindrical body wall is tearable from an edge, and includes an outer strip and an inner strip that are helically wound on one another and displacedly overlapped in a lateral direction parallel to the longitudinal axis XX′, and secured together through their mutually facing surfaces by a first region of attachment. The strips are made of the material having characteristics such that the inner strip and the outer strip are made of cardboard having different water drops. The cylindrical body wall is formed by securing together the outer strip, a first end part of the outer strip of one turn being superposed and secured to a second end part of the outer strip of an adjacent turn through their mutually facing surfaces by a second region of attachment.

A tearable core, adapted for winding a sheet product, includes a cylindrical body wall defining a longitudinal hole of longitudinal axis XX′. The cylindrical body wall is tearable from an edge, and includes an outer strip and an inner strip that are helically wound on one another and displacedly overlapped in a lateral direction parallel to the longitudinal axis XX′, and secured together through their mutually facing surfaces by a first region of attachment. The strips are made of the material having characteristics such that the inner strip and the outer strip are made of cardboard having different water drops. The cylindrical body wall is formed by securing together the outer strip, a first end part of the outer strip of one turn being superposed and secured to a second end part of the outer strip of an adjacent turn through their mutually facing surfaces by a second region of attachment.

A system comprising a mandrel, a winding device for helically winding strips around the mandrel to form a base tube moving away from the mandrel at a tube speed, a strip suppling device for supplying the strips to the winding device, and a cutting device for cutting the base tube at a predetermined length to form the lengths of tube while the base tube is moving in a tube direction at the tube speed, and a method.

A system comprising a mandrel, a winding device for helically winding strips around the mandrel to form a base tube moving away from the mandrel at a tube speed, a strip suppling device for supplying the strips to the winding device, and a cutting device for cutting the base tube at a predetermined length to form the lengths of tube while the base tube is moving in a tube direction at the tube speed, and a method.