Equipment for the production of cardboard tubes, comprising a tube-forming machine (1) provided with means for forming cardboard tubes with strips of cardboard (3) helically wound on a forming spindle (10), comprising a feeding unit (2) for feeding said cardboard strips, and comprising guide means (4) for guiding the cardboard strips (3) along a predetermined path (30, 31, 32) between the feeding unit (2) and the tube-forming machine (1), wherein in a final section (32) of said path the strips of cardboard (3) enter into the tube-forming machine (1). The guide means (4) are arranged and acting, along the said path, such that in said final section (32) of said path the cardboard strips (3) enter from the above or from the bottom into the tube-forming machine (1), so that said final section (32) is a descending or an ascending section of said path.

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 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 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.

In order to solve the disadvantages of plastic straws in terms of environmental pollution, and the inconvenience of the above-described paste-adhered paper straws, provided is a paper straw comprising: an inner paper portion in which a single strip of paper without a heat-adhesive coating material on the inside surface thereof is spirally wound so as to form a single layer, and an outer paper portion which comprises at least one paper strip forming at least one layer around the outer peripheral surface of the inner paper portion while being wound in a spiral, and which is provided with the heat-adhesive coating material on the outside surface of the paper strip forming the outermost layer, wherein the paper strip of the outer paper portion has a wider width than the paper strip of the inner paper portion, the heat-adhesive coating material is provided between two paper strips of adjacent different layers, and the heat-adhesive coating material has adhesive strength or water resistance according to heating and curing.

In order to solve the disadvantages of plastic straws in terms of environmental pollution, and the inconvenience of the above-described paste-adhered paper straws, provided is a paper straw comprising: an inner paper portion in which a single strip of paper without a heat-adhesive coating material on the inside surface thereof is spirally wound so as to form a single layer, and an outer paper portion which comprises at least one paper strip forming at least one layer around the outer peripheral surface of the inner paper portion while being wound in a spiral, and which is provided with the heat-adhesive coating material on the outside surface of the paper strip forming the outermost layer, wherein the paper strip of the outer paper portion has a wider width than the paper strip of the inner paper portion, the heat-adhesive coating material is provided between two paper strips of adjacent different layers, and the heat-adhesive coating material has adhesive strength or water resistance according to heating and curing.

Provided is a paper straw manufacturing method for addressing the issues of manufacturing process inefficiency and inconvenience in the drinking process of paper straws formed by a glue-adhesion method, the paper straw manufacturing method comprising: a step of unwinding a plurality of paper strips equipped with a thermal adhesive coating material on at least one side in each of a plurality of rolls; a step of heating the unwound plurality of paper strips by means of a heater; a step of winding, by means of a belt, the heated plurality of paper strips on a core rod so as to form a preparatory straw; a step of the preparatory straw following the length direction of the core rod by means of a guide portion; and a step of cutting the preparatory straw by means of a cutting portion so as to form a straw.

Embodiments of the present invention relate to elongated tubular members that include at least one layer comprising a cellulose ester. In some cases, the cellulose ester may be in the form of staple fibers. The layer may be formed via a wet-laid fiber web that may also include cellulose fibers. The elongated tubular members may be suitable for use with food and/or beverage items as, for example, drinking straws or other similar items.