Providing a bag-shaped structure and a method for manufacturing a bag-shaped structure, which can provide high blood pressure measurement accuracy even when the cuff width is reduced. A bag-shaped structure used in a cuff for a blood pressure monitor configured to be wrapped around a living body, inflate when a fluid is supplied to an internal space, and compress the living body includes: an inner wall portion provided on a living body side; an outer wall portion facing the inner wall portion; and a pair of side wall portions bent toward the internal space and continuous with the inner wall portion and the outer wall portion, at least part of which is formed integrally with the inner wall portion.

The present invention is a method for manufacturing inflatable articles, or bladders for inflatable articles, that is time-efficient, simple, inexpensive and permits the uninterrupted manufacture of numerous and even customized article or bladder configurations and sizes, without expensive configuration-specific, metal tooling. The method includes the steps of applying a barrier material to a side of a first film, providing a second film with the first film so that the barrier material is disposed between the first and second films, adhering the first film to the second film so that the films are sealed together in areas except where the barrier material has been applied to form at least one inflatable compartment and sealed peripheral edge, and cutting along the sealed peripheral edge to form an inflatable article or bladder for use in an article of manufacture. The barrier material may be a paint, ink, paper or surface treatment that effectively prevents the first film from adhering to the second. The inflatable article or bladder of the present invention may be used as or in athletic equipment, for example, including footwear.

The present disclosure provides an inflatable product comprising a wall enclosing an air chamber. A plurality of main tension members and branch tension members are disposed within the air chamber. The main tension members have an upper edge and a lower edge. The branch tension members each include a first connection region and a second connection region each connected to the wall of the air chamber. The branch tension members each include a third connection region located between the first and second connection regions and connected to the upper edge or the lower edge of the main tension member.

A system and method for forming a seam between at least first and possibly second pieces of material used to form an inflatable product utilizes at least a first and potentially a second seam forming members that are attached to an inside wall of a piece of product material that comprises the inflatable product proximate each end. The inflatable product is comprised of one or more pieces of product material and one or more seam forming members located at any location where a seam is necessary. A first portion of the seam forming member attaches to a first edge of a first piece of product material and a second portion of the seam forming member attaches proximate a second edge of the first piece of product material. The seal forming can be accomplished by radio frequency, ultrasonic, heat or other types of welding, and adhesive or chemical based bonding.

A composite includes a heavy Leno weave fabric, a first resin coating, and a second resin coating. The heavy Leno weave fabric has a first side and a second side. The fabric is characterized by yarns having a denier number of at least about 1,300 in both warp and weft directions. The fabric defines a pore structure. The first resin coating is on the first side of the heavy Leno weave fabric. The second resin coating is on the second side of the heavy Leno weave fabric. The first and second resin coatings are bound to each other through the fabric via the pore structure.

A rib, a manufacturing process thereof and an inflatable product are provided, wherein the manufacturing process of the rib includes the following steps: forming an annular region and an enclosed region by weaving according to a preset size, performing a local gluing on both sides of the surface of the annular region respectively; cutting at the enclosed region so as to form a closed-loop rib, wherein the annular region is formed by using a direction of weaving, the enclosed region is formed on both sides of the annular region through the weaving points, and gluing layers are formed by means of performing a local gluing in the annular region, finally, it is only required to cutting the enclosed region to form the closed-loop rib, such that a direct forming of the weaving to the rib is realized, and the local gluing can also be performed on surfaces of the rib.

The present invention relates to a method for welding a 3D bellows. The method includes: repeatedly laminating a unit cell material, a second adhesion-preventing film, a different unit cell material, and a first adhesion-preventing film; forming ventilation holes on the unit cell materials by pressing a hole-processing cutter on which a hole-circumference welding heater is installed onto the laminated unit cell materials and the first adhesion-preventing films, and then heating the circumference of the ventilation holes; finishing two sides of the unit cells by positioning, on two outermost surfaces of the laminated unit cell materials, a first finishing unit cell material and a second finishing unit cell material provided with an air injection port; and cutting the first finishing unit cell material, the unit cell materials, and the second finishing unit cell material and heating the periphery of the cut area by pressing a contour-processing cutter.

An automated system and method are disclosed for producing an inflatable product having a first sheet, a second sheet, and a plurality of tensioning structures between the first and second sheets. The system includes an upstream tensioning structure production subsystem that produces the tensioning structures and a downstream preassembly production subsystem that couples the tensioning structures to the first and second sheets. The subsystems may operate simultaneously to produce the inflatable product in an automated, efficient, and repeatable manner.

An airbag sealing structure, including: an airbag body; at least one opening portion, configured on the airbag body; at least one passage portion, configured inside the airbag body and positioned at one side of the opening portion, a diameter of the passage portion being smaller than 2.9 millimeters; at least one accommodation space far away from the side of the opening portion and configured on the passage portion; and at least one blocking portion, configured inside the accommodation space and positioned at one side of the passage portion. Thereupon, a pneumatic pump nozzle may be inserted in the opening portion of the airbag body to fill air into the airbag body, air will then enter the accommodation space through the passage portion to inflate the accommodation space; when the accommodation space is saturated with air, the airbag body will seal the passage portion; thereafter, the passage portions are hot-sealed immediately.

Embodiments of the present invention provide reinforcements for inflatable device assemblies. Specific embodiments provide a welded reinforcement for crotch areas of inflatable devices. Particular benefits may be achieved when the areas to be reinforced with the reinforcement system described are non-linear, defining a geometry with at least one curve or angle. Specific aspects of the reinforcement system provide one or more precut gusset elements that are configured to be secured with respect to a crotch area of a base substrate and welded.