JPH0550387B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing airtight hollow products such as air surfiders, air pine tresses, life jackets, etc.

[Conventional technology]

Products such as floats and cushions that seal air inside airtight bags are widely used in various fields. It is necessary to maintain the sheets parallel to each other, and generally a hanging cloth of a certain length is used.

There are also models where the upper and lower seats are directly joined at key points, as seen in Air Pine Torres and Surfrider.

[Problem that the invention seeks to solve]

By the way, in order to connect the upper and lower sheets of an airtight hollow product directly or through a hanging fabric, adhesive must be used to prevent the airtightness of the sheets from being impaired, and when using a hanging fabric, the shape of the product Since this depends on the processing accuracy and installation accuracy of the hanging cloth, manufacturing it requires a very troublesome process. In addition, manufacturing is easy by directly bonding the top and bottom sheets of the product, but it has the disadvantage that the sheets tend to peel off easily, so it is usually done by heat fusion for products using thermoplastic sheets. Only. The object of the present invention is to improve the processability of airtight hollow body products using so-called rubberized cloth and to stabilize the quality thereof.

[Means for solving problems]

In the present invention, the entire surface of upper and lower fabrics made of natural fiber or synthetic fiber fabrics sewn at predetermined intervals is air-tightened by rubberized processing, and is divided into rows of sewing lines. This method of manufacturing an airtight hollow product is characterized in that an air bag is formed between two pieces of fabric that communicate with each other through seams.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an example of manufacturing airtight hollow products such as air mats and surfriders. In FIG. 1a, first, upper and lower fabrics 1a, 1 are made by folding and overlapping two rectangular pieces of fabric or one piece of fabric using a fabric made of natural fiber or synthetic fiber fabric as a base material.
b are sewn together linearly at predetermined intervals to form parallel rows of stitches 2, 2, . . . on the fabric surface. Of course, it is also possible to use fabrics 1a and 1b sewn by weaving together with the texture of the fabric.

The cross section is shown in FIG. 1b. In addition, both fabrics 1a and 1b other than the sewing line by seams 2, 2, etc. are shown in the figure.
The spacing between is shown expanded. Next, fabrics 1a and 1b
Adhesive 3 is suitably applied to the surface and peripheral portion of the substrate, and a rubber coating 4 is further adhered to the surface. Both fabrics 1a, whose surfaces are airtight through this rubberized process,
Air bags 5, 5, . . . , partitioned by rows of seams 2, 2, . . . are formed in parallel between 1b. The fabric 1 is sealed by sealing the periphery and communicating with one of the air bags 5.
Attach the air supply port 6 to a to complete the product M shown in FIG. 1c. When compressed air is forced into the product M through the air supply port 6, air is filled in a specific air bag 5 that communicates with the air supply port 6, and this air flows through the seam 2 into the adjacent air bag 5. The air flows in one after another, filling each air bag 5, 5, .

Figure 2 shows an example of application to a life jacket.

In this embodiment, the sewn fabrics 1a and 1b shown in FIG. It is sealed with binder 7.

If an air supply port 6 is attached to a part of this vest C and air is blown between the two fabrics 1a and 1b, air will be filled into the air bags in each compartment through each row of seams as in the previous embodiment. , is molded into a hollow body shaped like a vest.

In the present invention, the interval between the rows of sewing lines used to sew the two fabrics together and the number of rows of stitches can be set freely.

One or more air bags can be freely formed between both fabrics. Furthermore, when performing airtight treatment by rubberizing, it is important that the rubber applied to the front surface does not penetrate into the back surface of the fabric. Air can freely flow through the seams unless the space between the two fabrics is blocked by rubber. Rubberizing the fabric surface can be easily performed using calendering.

〔Effect of the invention〕

Therefore, according to the present invention, if the fabric sewn in rows is prepared in advance, the fabric can be cut and sewn according to the type of product, then rubberized, and air supply ports can be provided if necessary. This can significantly simplify and save labor in the manufacturing process of airtight hollow products.

In addition, according to the present invention, since both fabrics are connected by sewing, the strength is high, and by setting the spacing between the rows of seams, the height and shape of the product when filled with air can be freely set and designed. I can do it.

The present invention has the effect of being able to provide products of uniform quality when used in the manufacture of airtight hollow bodies that are used by enclosing air.

[Brief explanation of the drawing]

Figures 1 a to c show one embodiment of the present invention, where a is a plan view of an example of sewing fabrics, b is an enlarged cross-sectional view after rubberization processing, c is a perspective view of the product, and Figure 2 FIG. 3 is a perspective view of a product showing another embodiment. 1a, 1b...Fabric, 2...Seam, 4...Rubber coating, 5...Air bag, 6...Air supply port.

Claims (1)

[Claims] 1. The entire surface of the upper and lower fabrics made of natural or synthetic fibers sewn at predetermined intervals is air-tightened by rubberizing, and the spaces between the fabrics separated by each sewing line are , a method for manufacturing an airtight hollow product, characterized by forming air bags communicating with each other through seams.