JPH062187B2 - Production method for pneumatic vinyl products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pneumatic product formed of a soft vinyl chloride resin sheet, and in particular, a pendant vinyl bag is provided to form irregularities when air is blown. The present invention relates to a method for producing a pneumatic vinyl product that exhibits a three-dimensional effect.

It is desired to enhance the value of a product by giving a three-dimensional effect by forming complex irregularities on the surface of a pneumatic product (hereinafter referred to as an empty vinyl product) formed of a soft vinyl chloride resin sheet.

For example, in order to give a three-dimensional effect to the surface of the pneumatic vinyl cushion, for example, irregularities may be formed along the contours or patterns of human hair and facial structures.

[Prior Art and its Defects] In the conventional method for manufacturing an empty vinyl product having a three-dimensional effect, the material is cut and formed for each convex portion, and the adjacent portions are welded with a margin. Since each part is processed and welded, there are drawbacks that the number of steps is large and the cost is high. When the air is filled, the material is not cut into individual convex portions without processing, one material has a margin, or one material is displaced from the other material and then welded. Unevenness was formed (for example, JP-A-63-7278). However, such welding work is not easy. Also, the material had a three-dimensional effect only by printing on the surface.
With this method, there is a limit to the expression of stereoscopic effect.

Thus, in the past, if an attempt was made to express a complicated curved surface on the surface of an empty plastic product, the manufacturing process would inevitably become complicated, and a significant increase in cost would be unavoidable. There are few examples of deep pursuit.

[Technical problem to be solved] By accommodating a small vinyl bag to be a hanging vinyl bag in a large vinyl bag and welding the same side parts of both bags separately, when air is blown into both bags It is easily understood that the small bag causes the outer large bag to be pulled at the welded portion to form irregularities. However, conventionally, it has been time-consuming to separately weld the same side portions of both bags, and also to make a small bag and a large bag.

The present invention is a three-dimensional pneumatic vinyl product having a hanging vinyl bag, in which a large outer bag that determines the appearance of the product and the same side portion of the hanging vinyl bag can be easily welded. An object of the present invention is to provide a method for producing a pneumatic vinyl product, which can improve the production efficiency of the product.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a heat insulating paper that does not melt between the front side portion and the back side portion of a hanging vinyl bag due to the respective vinyl cloth and the welding temperature of the vinyl bag. And a high frequency is applied to the intervening portion of the heat insulating paper by means of a welder to weld the vinyl cloth on the front and back sides and the front and back side portions of the flat middle hanging vinyl bag, respectively.

A valve with a plug for blowing and discharging air is welded to one of the front vinyl cloth and the back vinyl cloth.

[Operation] In steps (a) and (b), since the heat-insulating paper is sandwiched in the middle-hanging vinyl bag, the surface part of the middle-hanging vinyl bag becomes the surface vinyl cloth when welding by the welder. ,
The back surface of the hanging vinyl bag is welded to the back vinyl material, and the front surface and the back surface of the hanging vinyl bag are not welded.
Further, a product having a predetermined contour can be obtained by the step (c).

The thickness of the hanging vinyl bag is set so as to correspond to the concave portion of the product when inflated.

Therefore, when the valve plug is removed, air is blown into the valve to fully expand it, and then the valve is plugged again, a convex portion and a concave portion are formed at predetermined positions of the product, which gives a three-dimensional effect.

[Embodiment of the Present Invention] Next, the present invention will be described with reference to a face type cushion P as shown in FIG.
Next, an example in which a thick line L is provided with a recess to form a face having a three-dimensional effect will be described.

First, a front vinyl cloth 1 with a printed face pattern shown in FIG. 2 and a back vinyl cloth 2 having substantially the same area as the main body are prepared. The valve 3 with a plug is welded to the front vinyl 1 or the back vinyl cloth 2.

Next, as shown in FIG. 3, the hanging vinyl bag 4 is placed on the back vinyl cloth 2. The middle-hanging vinyl bag 4 has a cross-sectional thickness at the thick line L portion when the product is inflated by blowing air. When trying to approximate the three-dimensional appearance of the face of the product to a natural shape, on the thick line in FIG. 1, the cross section becomes thinner toward the outside of the face and thicker toward the center. For example, when the sectional thickness at point A in FIG. 2 is set to 8 cm, the point B to 7 cm, and the point C to 3 cm, in FIG. 4, a to a '= 8 cm, b to b' = 7 cm, c to c. ′ ＝
It is possible to create a drawing that assumes the cross-sectional height of all positions of the thick line, such as 3 cm, with the thick line in FIG. 1 as the center. This is a plan view of the hanging vinyl bag shown in FIG.

Fig. 5 is a hanging vinyl bag made based on the drawing in Fig. 4. Two rectangular vinyl sheets are stacked, and a thin thermal insulating paper 5 such as tracing paper is placed in the middle ( Cut a little smaller than the contour line), sandwich it with a welder along the contour line of the hanging vinyl bag, and cut it. That is, two flat vinyl bags 4 with the heat insulating paper 5 put therein are made for hair 4a and mouth and cheeks 4b. An air circulation hole 6 may be provided in each bag 4.

As shown in FIG. 3, after placing the hanging vinyl bag 4 on the back vinyl material 2, the front vinyl material 1 is placed thereon, and the portion corresponding to each thick line L in FIG. 1 is welded by a welder. To do.

As a result, since the heat-insulating paper 5 is contained in the hanging vinyl bag in the portion welded on the thick line, the surface vinyl cloth 1 and the upper portion of the hanging vinyl bag 4 are welded. At the same time, the high frequency penetrates the heat insulating paper 5 and welds the lower part of the hanging vinyl bag 4 and the back vinyl material 2. That is, the upper two vinyl sheets having the thermal insulating paper 5 as a boundary are welded to each other. Therefore, the heat insulating paper 5 is naturally made of a material having thermal conductivity and flexibility that does not melt at the welding temperature of the welder.

In this case, an important technical point is to slightly separate the end portion of the welding line L from the welding line along the contour of the face in the next step and form the air circulation hole therebetween.

Finally, weld with a welder along the contour of the face, and
When cut, the product as shown in FIG. 1 is completed.

The empty vinyl product P made as described above, when the valve 3 is unplugged and air is blown in, passes through the air circulation hole between the hanging vinyl bag and the contour of the face, and air is generated between the products. At the same time as it fills up and begins to expand, air also enters the inside hanging vinyl bag 4 through the air circulation hole 6 in FIG.
Eventually, the effect of suspending the front surface portion and the back surface portion of the face from the inner side, that is, the effect of limiting the expansion / separation distance (cross-sectional thickness) of the front and back both surface portions of the face at a constant distance is achieved. In the illustrated case, a point is a to a ', and a point is b to a'.
At points b'and C, the thickness is maintained by the length c to c '.

FIG. 6 shows the face cushion in the state in which the air is blown and inflated in this way, and the unevenness is clearly shown.

The appearance shape of the empty product produced by the present invention is arbitrary, and it can be applied to the production of general products imitating any animal or object having an uneven portion.

[Effects of the Invention] As described above, according to the present invention, the heat insulating paper having the sectional height of the concave portion when the product is expanded by the blown air is set on the back vinyl cloth. Place a flat middle hanging vinyl bag, place the printed surface vinyl cloth on the vinyl bag, apply a high frequency with a welder on the line of the part where the concave part of the product is to be placed, the surface vinyl cloth, the hanging vinyl bag and the back vinyl The material is welded, the contour of the product is welded, and the product is cut, so that it can be welded at once without the need for welding with a welder for each front and back of the hanging vinyl bag. Becomes extremely easy. In addition, since the welding of both articles can be performed subsequent to the welding of the hanging vinyl bag and the front and back vinyl articles, the production efficiency of a pneumatic vinyl product having a three-dimensional effect is significantly improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an empty vinyl product, FIG. 2 is a plan view of a front vinyl cloth and a back vinyl cloth, and FIG. 3 is a plan view showing a state where a hanging vinyl bag is placed on the back vinyl cloth, FIG. 4 is an explanatory view of dimension setting of the middle hanging vinyl bag, FIG. 5 is a perspective view of the middle hanging vinyl bag, and FIG. 6 is a perspective view showing a state where air is blown into the empty vinyl product. P ... Empty vinyl product, 1 ... Surface vinyl cloth, 2 ... Back vinyl cloth, 3 ... Valve with plug, 4 ... Medium hanging vinyl bag, 5 ... Thermal insulation paper.

Claims (1)

[Claims] 1. A front surface vinyl cloth and a back vinyl cloth are welded at their peripheral edges, and a flat middle hanging vinyl bag having an area smaller than that of the same cloth and having air circulation holes is interposed between the respective cloths. When the fabric and the front side portion and the back side portion of the hanging vinyl bag are welded along desired lines, respectively, and expanded by air blown from the air blowing holes attached to the front vinyl cloth or the back vinyl cloth. In the method for producing a pneumatic vinyl product in which a concave portion is formed along the welding line between the surface vinyl cloth and the hanging vinyl bag, between the surface side portion and the back surface side portion of the hanging vinyl bag. A heat insulating paper that does not melt depending on the welding temperature of each vinyl cloth and vinyl bag is interposed between the two sides, and a high frequency is applied to the intervening portion of the heat insulating paper by a welder so that the front and back side Method of manufacturing a pneumatic vinyl products, characterized by respectively welding the front and rear side portions of the plastic bag hanging said in flat and Le dough.