A hollow fiber membrane sheet-like object in which a plurality of hollow fiber membranes is aligned in parallel with each other and fixed to each other while both end faces of each of the hollow fiber membranes in a longitudinal direction are open, wherein at least one belt-like binding portion made of an elastic body having an elongation percentage (E) stipulated by JIS K6251 of 100% or more and extending in a direction perpendicular to the longitudinal direction is formed at each of both end portions of the hollow fiber membrane sheet-like object, and the plurality of hollow fiber membranes is fixed to each other.

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 machine (10) and a method for producing a tubular product (A), preferably made of paper, which can be preferably used to produce straws starting from one or more strip-shaped elements (B), by means of winding means (17) configured in a closed loop and partly wound around a shaping member (12) on which the one or more strip-shaped elements (B) are wound in a helical manner and by means of support means (20) configured as a support belt (22) disposed in a closed loop, made of flexible material, partly wound on the shaping member (12).

A machine (10) and a method for producing a tubular product (A), preferably made of paper, which can be preferably used to produce straws starting from one or more strip-shaped elements (B), by means of winding means (17) configured in a closed loop and partly wound around a shaping member (12) on which the one or more strip-shaped elements (B) are wound in a helical manner and by means of support means (20) configured as a support belt (22) disposed in a closed loop, made of flexible material, partly wound on the shaping member (12).

A water-degradable carrier for holding a caustic substance includes a tube having a first end, a second end, and a hollow interior disposed between the first and second ends. The tube may be formed from a water-degradable material and have overlapping self-adhered windings. The water-degradable material may include a water-degradable paper layer and a chemical-resistant water-degradable film layer that acts as an adhesive when wetted to adhere together the windings. The chemical-resistant water-degradable film layer is selected from a material that is resistant to a caustic substance that is to be carried by the carrier and acts as a barrier to substantially prevent the caustic substance from degrading the water-degradable paper layer and leaking out of the tube.

A water-degradable carrier for holding a caustic substance includes a tube having a first end, a second end, and a hollow interior disposed between the first and second ends. The tube may be formed from a water-degradable material and have overlapping self-adhered windings. The water-degradable material may include a water-degradable paper layer and a chemical-resistant water-degradable film layer that acts as an adhesive when wetted to adhere together the windings. The chemical-resistant water-degradable film layer is selected from a material that is resistant to a caustic substance that is to be carried by the carrier and acts as a barrier to substantially prevent the caustic substance from degrading the water-degradable paper layer and leaking out of the tube.

A paper hookah hose includes a bendable tube, a smoking mouth and a connecting tube. The bendable tube is a tubular member made of paper and having at least two layers and a spiral structure. The bendable tube has a section of bellows for bending. The bendable tube may be a full bellows or a combination of a bellows and a straight tube. The smoking mouth and the connecting tube are completely made of traditional pulp.

A mandrel designed for use in the construction of a custom-sized box includes a common platform on which a plurality of peripheral members is independently mounted. Each peripheral member comprises a disc-shaped base rotatably mounted on the common platform, a tongue slidably mounted within a channel formed in the base, and a vertical upright rotatably mounted at one end of the tongue. To construct a box, an elongated continuous strip of material is helically wrapped around the vertical uprights to form a main box body with a plurality of bands. Cutting mechanisms in each upright are actuated to create slots in the main box body that define flaps used to selectively enclose the open top and bottom ends of the box body. By reconfiguring the vertical uprights in the mandrel, a customized box can be constructed that is dimensioned to receive a consumer product with limited wasted space.

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.

Method for producing cardboard tubes by winding a plurality of ribbons (U, L) onto a spindle (1), a preset number of the ribbons (U, L) being glued in correspondence of the lower or radial inner surface thereof, characterized in that a predetermined amount of supplementary quick setting glue is applied on the lower surface of the last ribbon (U) destined to be wound on the spindle (1), in proximity to at least a longitudinal edge (BU) of the ribbon (U) forming a corresponding stripe of quick setting glue (G) astride of a section (ST) of the same ribbon interested or intersected by a subsequent cutting action executed downstream of the spindle (1).