JPH0941732A - Manufacturing of gas press-filling type tent post - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an industrial method for manufacturing gas press-filling type tent posts having construction such as 'H'-shape, '+'-shape, '*'-shape, 'HH'-shape, backbone-ribs shape, etc., by means of a plurality of tubes formed of cylindrical woven fabric having gas proof coating. SOLUTION: A plurality of tubes 1 formed of cylindrical woven fabric having gas-proof coating are used, and the flat tubes 1 are arranged in an assembly system in a state to provide notches to each other in positions corresponding to turning points or intersections of posts. Reinforcing web pieces 2 capable of press contact or adherence from up and down positions of the arrangement are brought into contact with them to bind.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial method for producing a gas press-fitting tent strut using a plurality of tubes made of a tubular knitted fabric having an air-proof coating.

[0002]

2. Description of the Related Art As a pillar of a tent for outdoor use, temporary use, warehouse use, etc., a tubular woven fabric made of strong yarn is used with a plurality of tubes having a film for gas barrier formed thereon. It is known that gas is pressed into the tube to form a support. In order to maintain airtightness and shape, cup-shaped members are often inserted at both ends of each tube to be integrated with the tube.

The above-mentioned tube is used to form a tent column, and in this case, a plurality of tubes are preliminarily formed into an "H" shape, a "ten" shape, a "*" shape, a "king" shape, and a spine-rib shape. It is necessary to assemble it in such as. Also, because of the three-dimensional shape, at least some of the tubes
It is necessary to bend in an arch shape when the gas is pressed.
Then, by covering the tents sewn in advance in a dome shape or the like on the pillars assembled in this way, the tent can be set up with one touch.

The tent having the above-mentioned structure can be assembled into the tent in a very short time only by pressurizing the gas into the tube, and can be made extremely compact only by removing the gas from the tube.

[0005]

As described above, it is possible to insert a cup-shaped member at both ends of each tube constituting the support column so as to be integrated with the tube. However, a plurality of tubes are "H" shaped. When assembling into a "10" shape, a "*" shape, a "king" shape, a spine-rib shape, etc., insert a cup-shaped member at the location corresponding to the bifurcation or intersection of the columns of each tube. It is necessary to integrate it with the tube. For example, the number of cup-shaped members installed in the "ten" shape is 8, the number of cup-shaped members installed in the "H" shape is 10, and the number of cup-shaped members installed in the "king" shape is 16. It also becomes.

However, it is troublesome to integrate the cup-shaped member with the tube, and the reliability test is also troublesome, and it is not easy to join the portions corresponding to the branch points or the crossing points of the columns. Therefore, this method has many problems to be solved in terms of both productivity and manufacturing cost. Since the gas-press-in type tent column is marketable, its utility will be great if the assembly of a plurality of tubes into a three-dimensional shape can be made industrially simple.

Under the above circumstances, the present invention uses a plurality of tubes made of tubular knitted fabric having an air-proof coating to form an "H" shape, a "ten" shape, a "*" shape,
It is an object of the present invention to provide an industrial method for manufacturing a gas press fit type tent strut having a "king" shape, a spine-rib shape and the like.

[0008]

Means for Solving the Problems A method for manufacturing a gas press fit type tent strut according to the present invention uses a plurality of tubes (1) made of a tubular knitted woven fabric having an air-proof coating and flattening these tubes (1). Reinforcing web pieces that can be fused or bonded from the top and bottom of the location 1) while arranging 1) in the form of a tree with notches provided at the locations corresponding to the branching points or crossing points of the stanchions. Is abutted against and crimped.

The present invention will be described in detail below.

The tubular knitted fabric is manufactured by a bag weaving method (a method in which a yarn is divided into two warp groups of front and back and double weaving in which wefts are inserted) or a circular knitting method, and in some cases, a flat knitted fabric. A method of forming the cloth into a tubular shape can also be adopted. When comparing the tubular woven fabric and the tubular knitted fabric, the former tubular woven fabric is better for the purpose of the present invention.

Of the tubular knitted woven fabric, at least a part (particularly in the radial direction) of the yarn used for weaving the tubular woven fabric is preferably a yarn made of high-strength fiber.

The tubular knitted woven fabric is a portion which is to be gas-pressed into the tubular woven fabric to form a tent support, and therefore it is necessary to have airtightness.

Therefore, a single-layer or multi-layer airtight film or tube having at least an outer layer being a heat-fusible layer is inserted into the inner surface side of a tubular knitted woven fabric, and heat-treated in a state in which a gas is press-fitted for airtightness. It is desirable to integrally laminate the film to the inner surface of the tubular knitted fabric. When the airtightness is imparted to the inner surface side of the tubular knitted fabric in this manner, reliable airtightness can be obtained without unevenness in the thickness of the airtightness imparting layer and coating defects such as pinholes. It is desirable that the outer surface of the tubular woven or knitted fabric is integrally laminated with a single-layer or multi-layer airtight film or tube including a heat-fusible layer in at least the inner layer.

When a high degree of airtightness is required, an ethylene-vinyl alcohol copolymer, an acrylonitrile copolymer, or the above-mentioned airtight film or tube may be used.
It is also possible to use a multilayer film or tube containing at least one gas barrier resin layer such as polyamide or polyvinylidene chloride.

Instead of the above airtight film or tube, a stretchable tubular knitted woven fabric coated with an airtight resin may be used.

As another method of making the tubular knitted fabric airtight, a method of carrying out knitting with a yarn impregnated with or coated with an uncured or incompletely cured resin or a resin reflowable by heating is also adopted. It As the resin in this case, a thermosetting resin, an ultraviolet curable resin, a thermoplastic resin, etc. are used, and after the knitting or weaving, the resin is subjected to a treatment for complete curing or a heat treatment to form a continuous coating film between the textures of the textile fabric. To do.

For the purpose of waterproofing, water repellency, antifouling, weather resistance, airtightness, etc., it is preferable to form a coating layer or an impregnation layer on the outer surface side of the tubular knitted fabric. The coating layer or impregnation layer is formed by a method such as coating with a resin liquid, extrusion coating with a molten resin, thermocompression bonding of a resin film, and spray coating with a water repellent.

Since the tube (1) made of the tubular knitted fabric having the air-proof coating is a portion that becomes a support portion when formed into a tent, at least a part thereof is a tube that curves in an arch shape. Often required. Therefore, the following measures are taken so that the gas is press-fitted into an arched shape.

That is, in the tube which is bent when gas is injected, a split-type mold having a curved shape is provided with a tubular knitted or woven fabric having an air-proof coating or capable of forming the coating, and then the tubular shape It can be obtained by heat setting while gas is being pressed into the knitted fabric. This method is industrially advantageous.

In addition, the structures of the front and back sides of the tubular knitted fabric may be formed of yarns having mutually different elongation behaviors. Further, it is also possible that the structures of the front half and the back half that compose the tubular knitted fabric are formed by yarns having relatively different shrinkage rates during the heat treatment. The woven fabric is curved in an arch shape.

In the present invention, a plurality of tubes (1) made of the above-mentioned tubular knitted fabric having the air-proof coating are used, and the flattened tubes (1) are used at the branch points or the intersection points of the columns. Place the cutouts at the locations corresponding to the above in a braided form, and contact the reinforcing web pieces (2) that can be fused or adhered from the top and bottom of the locations, and apply a suitable pad plate if necessary. Crimp through. As a result, the desired gas press-fitting type tent columns can be obtained all at once.

As the reinforcing web piece (2), for example, a knitted or woven cloth, or at least one surface of which is provided with a heat-fusible resin coating or a heat-curable adhesive layer is used.

The three-dimensional shape of the tent column is, for example,
It can be an "H" shape, a "ten" shape, a "*" shape, a "king" shape, a spine-rib shape, a "ki" shape, and the like.

A valve (3) for introducing and extracting gas is provided at an appropriate portion of the tube (1) of the tent strut thus obtained. The type of gas introduced from this valve (3) is not limited, but air is usually used. The gas pressure is often several atmospheres to several tens of atmospheres.

The free end side of the tube (1) used as a tent support may be folded back and sealed by fusion. Further, it is also possible to perform airtightness by another suitable method such as inserting a cup-shaped member to achieve airtightness.

The awning covering the tent support may be attached to the tent support in advance, or may be covered after the support is erected. The constructed tent is useful as a tent for purposes such as outdoor use, temporary use, and warehouse use.

[0027]

In the present invention, a plurality of tubes (1) made of a tubular knitted woven fabric having an air-proof coating are used, and these flat tubes (1) are used as branch points or intersection points of the columns. Since the cutouts are arranged at the corresponding points in a tree-shape, and the reinforcing web pieces (2) that can be fused or adhered are abutted and crimped from above and below the arranged points. A gas press fit type tent strut having a structure such as an “H” shape, a “ten” shape, a “*” shape, a “king” shape, and a spine-rib shape can be industrially manufactured very advantageously. Not only will productivity increase dramatically,
Airtight reliability and durability are also excellent.

Since the three-dimensional structure is achieved by the gas press-fitting method, the tent can be set up very easily and in a short time, and the storage after using the tent is also very easy.

[0029]

EXAMPLES The present invention will be further described with reference to examples.

Example 1 FIG. 1 is an explanatory view showing an example of a method for manufacturing a gas press-fitting type tent strut according to the present invention. FIG. 2 is a perspective view showing the state of the tent column obtained in FIG. 1 after the gas has been press-fitted. FIG. 3 is an explanatory view showing an example of a manufacturing process of a tube that bends when gas is injected.

A tubular woven fabric is woven by a bag-weaving method using polyester fiber yarns as warps and high-strength aromatic polyamide fiber yarns as wefts, and after scouring and calendering according to a conventional method, the entire outer surface is woven. A coating layer made of polyurethane resin was formed on the surface so as to obtain functions such as waterproofing, water repellency, and antifouling. A tubular knitted fabric may be used instead of the tubular woven fabric.

As shown in FIG. 3, an inner tube made of polyurethane resin having a slightly smaller diameter than that is inserted into a tubular woven cloth having a coating layer of polyurethane resin formed on the entire outer surface thereof, and the inner tube is formed into a curved shape. The mold was set in a split mold (4) that had and was embossed on the inner surface side, and after the split mold was closed, heat setting was performed in a state where gas was pressed into the inner tube. This gave a bendable tube (1). The inner tube is softened or melted by heating,
It was strongly pressed against the inner surface of the tubular woven fabric by air pressure and laminated integrally on the inner surface of the tubular woven fabric. The embossed pattern on the inner surface of the mold (4) was transferred to the coating layer on the outer surface, and the touch was good.

Although not shown, a linear mold was prepared and a tube (1) of a non-curving type was manufactured in the same manner as above.

The two kinds of tubes (1) thus obtained are cut into a predetermined length as shown in (a) of FIG. 1, and the flattened tube (1) is shown as (b) of FIG. In addition, triangular cutouts were provided at the locations corresponding to the branch points or intersections of the columns, and they were arranged in a tree.

Then, as shown in (c) of FIG. 1, a reinforcing web piece (2) which can be fused from above and below is brought into contact with a portion corresponding to the branching point or the crossing point, and is strongly thermocompression-bonded through a contact plate. did. Since airtightness is easily impaired at the portion indicated by the black arrow in (b) of FIG. 1, it is also preferable to fuse a small web piece for reinforcement in advance before contacting the reinforcing web piece (2).

The free end side of the tube (1) was folded back and sealed by heat fusion as shown in (b) of FIG. Further, a valve (3) for introducing and discharging gas was provided at an appropriate position on the tube (1). In (b) of Fig. 1, there is a valve (3) at one location.
However, in the case of a large tent, there are valves at multiple locations.
(3) can be provided.

Air was press-injected from the valve (3) of the gas press-fitting type tent strut thus obtained to form a "king" -shaped three-dimensional shape in plan view as shown in FIG. It was covered and made into a kamaboko-shaped tent. The tent could be set up quickly.

Embodiment 2 FIG. 4 is an explanatory view showing another example of the method for manufacturing the gas press fit type tent column of the present invention. FIG. 5 is a perspective view showing the state of the tent column obtained in FIG.

Bendable tube as in the first embodiment
(1) was obtained, and then air was press-injected from the valve (3) to form a three-dimensional shape of "10" in plan view.

Example 3 Weaving was carried out by a bag weaving method using as a warp and a weft a yarn to which an uncured or incompletely cured polyurethane resin was adhered by impregnating a two-component crosslinking type polyurethane resin liquid and drying. A tubular woven fabric was obtained. An inner tube was inserted into this tubular woven cloth, and the tube was formed in the same manner as in Example 1.
(1) was prepared. During this operation, the tubular woven fabric was heat cured and the polyurethane resin formed a continuous coating across the fabric structure. Thereafter, in the same manner as in Example 1, a tent column that can be formed into a three-dimensional "king" shape was manufactured. A tubular knitted fabric may be used instead of the tubular woven fabric.

[0041]

As described in the section of the operation, according to the present invention, a plurality of tubes (1) made of a tubular knitted woven fabric having an air-proof coating are used to flatten these tubes.
(1) are arranged in a braided state with notches provided at the points corresponding to the branching points or the crossing points of the columns, and the reinforcing web pieces (2 ) Are abutted and crimped, so gas press-fit tent stanchions with "H" shape, "ten" shape, "*" shape, "king" shape, spine-rib shape etc. Can be manufactured extremely advantageously. Not only will productivity be dramatically increased, but airtight reliability and durability will also be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an example of a method for manufacturing a gas press-fitting type tent strut of the present invention.

FIG. 2 is a perspective view showing a state of the tent column obtained in FIG. 1 after gas is pressed therein.

FIG. 3 is an explanatory view showing an example of a manufacturing process of a tube that bends when gas is injected.

FIG. 4 is an explanatory view showing another example of the method for manufacturing the gas press fit type tent strut of the present invention.

FIG. 5 is a perspective view showing a state of the tent column obtained in FIG. 4 after gas is press-fitted.

[Explanation of symbols]

 (1)… Tube, (2)… Reinforcement web piece, (3)… Valve, (4)… Mold

Claims (3)

[Claims] 1. A plurality of tubes (1) made of a tubular knitted fabric having an air-proof coating are used, and the flattened tubes (1) are mutually attached at a position corresponding to a branch point or a crossing point of a column. A gas press-fit type tent strut characterized in that it is arranged in a tree-shape with a notch, and that reinforcing web pieces (2) that can be fused or adhered are abutted and crimped from above and below the arrangement location. Manufacturing method. 2. The method according to claim 1, wherein at least a part of the tube (1) used is a tube that bends when gas is injected. 3. A tubular knitted fabric having an air-proof coating or arranged so that the coating can be formed on a split mold (4) having a curved shape when a tube is bent when gas is injected. 3. The method according to claim 2, wherein the tubular knitted woven fabric is obtained by heat setting while gas is being pressed.