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.

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.

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 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.

Briefly described, embodiments of the presently disclosed subject matter relate to void fill packaging products and one or more methods for making the void fill packaging products. The void fill packaging product is configured to cushion items for transport whether that be shipping long distances, local delivery, or self-transport in a vehicle. Specifically, in one aspect, a void fill product for packaging, may include a single spiraled continuous paper sheet surrounding a hollow center and forming at least two layers that overlap in a first direction. The portions of the at least two layers may overlap and may be mechanically joined in a second direction that is approximately perpendicular to the first direction.

A Sandwich panel with a core structure, in particular with a honeycomb-shaped core structure, and plane-parallel cover layers applied to both sides of this core structure, to form a floor surface in a fuselage airframe of an aircraft, the core structure having at least one recess into which at least one reinforcing structure is integrated, wherein the at least one reinforcing structure is formed with at least one core, said core having at least one recess into which a stopper is introduced, into which at least one attachment element can be introduced to attach at least one further component to the sandwich panel, and a plurality of prepreg strips which each have a uniform fiber running direction being wound around the core. In addition, the invention relates to a method for the production of a sandwich panel according to the invention.

A composite container is provided for holding one or more products (e.g., snack foods, toys, etc.) in separate compartments within the same container. The container includes a tubular body defining a first end and a second end, and the tubular body extends radially inward at a predefined location between the first and second ends to form a ledge. A separator, such as a paperboard or plastic disk, can be placed on the ledge, such that the separator defines a first compartment on one side of the separator and a second compartment on the other side of the separator. In this way, a product can be stored in the first compartment, and a product can be stored in the second compartment, and the user can have access to both in the same container. Associated methods of manufacturing a composite container with multiple compartments are also provided.

Described are methods of making a paint roller using thermoplastic strip material, adhesive and a composite cover material. The materials can be assembled in a continuous manufacturing process by helically winding a strip comprising polypropylene around a mandrel so as to form a helically wound strip, advancing the wound strip along the mandrel, applying a molten layer of adhesive comprising polypropylene onto the outer surface of the wound strip, wrapping a strip of composite cover material about the wound strip and over the layer of adhesive, and allowing the adhesive to cool, thereby laminating the composite cover material with the outer surface of the wound strip.

An apparatus for producing tubes comprises a mandrel, a winding unit, and a fluid dispensing unit. The tube is formed as the winding unit winds at least one strip of web material around the mandrel and advances the tube along the mandrel toward a distal end of the mandrel. The fluid dispensing unit is disposed at the distal end of the mandrel and is configured to dispense a fluid to the inner surface of the tube as it advances past the distal end of the mandrel.