JPH0620403B2 - Fan and method of manufacturing fan - Google Patents

Description

TECHNICAL FIELD The present invention relates to a round fan and a method for producing the same, and in the round fan in which the coated paper of the round fan is welded to the front and back of the round bone, A mesh film or sheet such as a heat-fusible non-woven fabric is interposed between one side and the fan bone, whereby the coated papers on the front and back sides are welded.

[Prior Art and Problems] A paper fan, which is formed by heat-sealing coated papers attached to the front and back of a round fan bone, has already been proposed in Japanese Utility Model Publication No. 59-8584.

This product is welded by pressing the coated paper (2a) (2b) equipped with the thermoplastic synthetic resin layer (20) on the support rods (10) (10) of the round bone (1) under heating conditions. ing. By this welding, the coated papers (2a) and (2b) are welded to each other between the supporting rods (10) and (10) by the synthetic resin layer (20) and integrated with the front and back of the fan bone (1). In addition, in this product, the manufacturing process is simplified and the durability of the fan as a product is improved, as compared with the past products of the pasting method.

However, in this conventional one, the coated paper (2a) or the coated paper
Since the synthetic resin layer (20) formed on the inner surface of (2b) is formed with a uniform thickness over the entire surface of these coated papers, it becomes slightly heavier than the round paper up to that point. However, there is a problem in that, when used, it feels harder and heavier than conventional glue-attached fans. In addition, at the time of manufacturing, there is an inconvenience that a so-called laminated paper in which a predetermined thermoplastic resin layer is laminated in advance must be prepared as one of the coated paper (2a) and the coated paper (2b). Also, coated paper
(2a) or synthetic resin layer (20) formed on the inner surface of the coated paper (2b)
Since these are uniformly formed on the entire inner surface of these coated papers, there is a problem that the welding efficiency with the other coated paper is poor. This is because when the synthetic resin layer (20) is welded, the entire area of the synthetic resin layer (20) has to be heated and pressurized to a predetermined temperature and pressure or higher, and the heat capacity required for this heat welding is large.

* Regarding the invention of claim 1, the present invention is such that the coated papers (2a) and (2b) are heat-fused by heating and pressurizing on the front and back of the area where the supporting rod (10) of the fan bone (1) is arranged. In the case of `` Shitauchiwa '', the weight of the fan is reduced to improve the usability and the coated paper (2
a) (2b) The objective is to improve the welding strength of the welded portions.

[Technical Means] The technical means of the present invention taken in order to solve the above-mentioned problems is that "a thermoplastic resin mesh film (3) is formed on the inner surface of one of the coated papers (2a) and (2b). ) Is interposed and at least the contact surfaces of the coated papers (2a) and (2b) are welded by the mesh film (3).

[Operation] The above technical means of the present invention operates as follows.

When the fan is completed, the fan bone is placed between the coated papers (2a) and (2b).
(1) and the mesh film (3) intervene, and the opposing surfaces of both coated papers between the supporting rods (10) and (10) of the round bone (1) are welded by the mesh film (3). It is in the state of being on the other hand,
Since the mesh film (3) is made of a thermoplastic resin and the resin portions are arranged in a mesh shape, the contact portion between the coated paper (2a) and the coated paper (2b) has a mesh shape. Are welded along. Therefore, the portion where the coated paper (2a) and the coated paper (2b) are welded to each other becomes a part of the coated papers (2a) and (2b) facing each other between the supporting rods (10) and (10). That is, coated paper (2a)
(2b) The amount of the thermoplastic resin in the portion where the two are welded to each other is significantly reduced.

In addition, when the coated paper (2a) and the coated paper (2b) are welded under a constant pressure, the thermoplastic resin portion for welding is partially present in the entire joint surface, so the outer surface of the coated paper The heat of welding applied by the heat is effectively transmitted to the welded portion.
Further, the pressing force also acts on the welded portion in a concentrated manner.

[Effects] The present invention having the above-described configuration has the following unique effects.

Since the amount of the thermoplastic resin in the portion where the coated papers (2a) and (2b) are welded to each other is significantly reduced, the weight of the fan is reduced accordingly and the usability is improved.

Further, at the time of heat welding, the heat of welding applied from the outer surface of the coated paper is effectively transmitted to the welded portion, and the pressing force also acts intensively on the welded portion, so that the coated paper (2a) and the coated paper The adhesive strength of the welded portion with (2b) is improved.

* Regarding the invention of claim 2 This invention is an invention of a method for manufacturing a round fan of the invention of the above-mentioned claim 2, in which "coated paper (on the front and back of the area of the support rod (10) of the fan bone (1) 2a) and (2b) are heat-pressed to heat-weld the fan, the ordinary coated paper can be used as it is, and the strength of the heat-welded part and the manufacturing efficiency can be improved. It is planned.

[Technical Means] The technical means of the present invention taken to solve the above-mentioned problem is that "a thermoplastic resin mesh film (in the inner surface of one of the coated papers (2a) and (2b)" 3) with the interposition of the support rods (10) (10) of the fan bone (1) between the mesh film (3) and one of the above-mentioned coated papers, and then heating. Under the conditions, the outer surface of the coated paper (2a) (2b) is pressed by an elastic material, and then the outer periphery of the area where the coated paper and the supporting rods (10) (10) are arranged is finished and punched into a predetermined shape. " That is.

[Operation] The above technical means operates as follows.

Cover paper (2a) (2b) and mesh film that are set in advance to a shape larger than the area where the supporting rods (10) (10) of the fan bone (1) are arranged
(3) will be overlapped and adhered to the area where the supporting rods (10) and (10) are arranged. At the time of this welding, as described in the operation of the invention of claim 1 described above. In addition, since the mesh film (3) has a mesh shape, the pressure applied by the elastic material concentrates on the mesh portion of the mesh film (3). That is,
The thermal action and mechanical action required for welding effectively act on the welded portion. Therefore, the reticulated film (3) is quickly melted, welded to the coated papers (2a) and (2b) and pressed. Further, since the welded portions are sparsely dispersed at the contact portions of the coated papers (2a) and (2b), the shrinkage force of the welded portions when the temperature of the welded portions drops to room temperature does not increase.

[Effects] The present invention having the above-described configuration has the following unique effects.

As the coated papers (2a) and (2b), ordinary coated paper can be used as it is, so that the material procurement can be rationalized.

The synthetic resin layer, which is the welded portion between the coated paper (2b) and the coated paper (2a), melts more quickly and surely than the conventional one.
The time required for welding can be shortened and defective welding is less likely to occur.

Since the shrinkage force when the welded part falls to room temperature is small,
Wrinkles on the surface of the coated papers (2a) and (2b) are less likely to occur as compared with the conventional ones described above.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

In the embodiment shown in FIG. 1 to FIG. 6, a covering paper (2a), a covering paper (2b) and a mesh film (3), which are cut into a rectangular shape of a certain size, are pre-welded to form a bag having a three-layer structure. Make up the body,
This is welded to the fan bone (1).

Therefore, as shown in Fig. 1, the coated paper and the mesh film (3) have a rectangular shape slightly larger than the size of the area where the supporting rods (10) (10) of the fan bone (1) are arranged. In this configuration, arc-shaped cutouts are formed on one side of these sheets so that these three have the same shape.

The notch portion is a connecting side (1) that connects the tips of the ribs (12) formed following the shaft (11) of the round bone (1) shown in FIG.
It matches the shape of 3). The bag having the three-layer structure is formed by stacking the coated paper and the mesh film (3) as shown in FIG. 1 and heat-sealing a certain range from the end edges of both sides to form a flat three-layer bag. It is a structure. Therefore, the disposition area of the support rods (10) (10) of the fan bone (1) can be inserted between the mesh film (3) and the coated paper (2a) or the coated paper (2b).
And the peripheral edge of the mesh film (3) located in the middle is
It functions as a welding material in this heat welding. The mesh film (3) used in this example is a non-woven fabric film containing a copolyester as a main component (for example, Morinoku Co., Ltd., trade name: Neunetz H, etc.) with a thickness of 10-
I use a thing of about 80 microns.

Next, as shown in FIG. 2, the round bone (1) is formed by connecting the arc-shaped ribs (12) to the tip of the handle (11) of the round bone (1), and connecting the ends to the connecting side (13). Connected by the above handle (11)
The supporting rods (10) (10) extending from the tip end of the paper extend beyond the connecting side (13) to the coated paper adhering area at the tip. This support (10) (1
The front ends of 0) are connected by a peripheral frame (14), and in this embodiment, the peripheral frame (14) is formed in a substantially rectangular shape.

And, the interval between both sides of the peripheral frame (14) is a coated paper (2a)
(2b) and the mesh film (3) are made to coincide with the distance between the welded side portions (21) (21) on both sides of the bag having a three-layer structure.

The bag is covered on the support rods (10) (10) of the fan bone (1) and the coated paper (2a) (2b) is attached to the fan bone (1). As shown in Fig. 3 and Fig. 4, when the tips of the support rods (10) (10) of the fan bone (1) are inserted between the coated papers (2a) (2b),
Since the distance between both sides of the peripheral frame (14) matches the distance between the welded side parts (21) and (21), the bag and fan bone are in this inserted state.
The relationship with (1) is identified and temporarily fixed. Then, as shown in FIG. 5, a silicone rubber plate (41) (4) provided with these combinations on the facing surface of the hot plate (4) (4) in a heated state.
When sandwiched between heat-resistant elastic plates such as 1), the coated papers (2a) and (2b) are pressed together under heating conditions, and the mesh film (3) melts and these coated papers are welded. To be done.

At this time, depending on the material of the round bone (1), the supporting rods (10) (10) and the coated paper on the side where the mesh film (3) is interposed are also welded to each other. .

When the coated paper (2a) (2b) having been welded as described above is finished and punched into a predetermined shape, a fan as shown in FIG. 6 is obtained.

In particular, since the film-like nonwoven fabric is used as the mesh film (3) used in this example, there is a concern that the mesh of this nonwoven fabric may float on the surface of the coated paper when a Japanese paper such as Japanese paper is welded. There is an advantage that it does not.

In the above example, the coated paper (2a) (2b) and the reticulated film (3) are welded together at the weld side (21) portion before being temporarily bonded to the fan bone (1). However, as shown in FIG. 7, the coated paper (2a) (2b) is cut into a predetermined shape in advance.
And mesh film (3) to support struts (10) (10) of round bone (1)
It is also possible to superimpose it on the disposition area and weld a part of it spotwise to temporarily fix the three-membered joint and the fan bone (1). When any of the above methods is adopted, instead of welding, the three members may be temporarily joined to the fan bone (1) by a binding metal such as a stapler.

[Brief description of drawings]

FIG. 1 is a perspective view of a coated paper (2a) (2b) and a mesh film (3) used in an embodiment of the present invention, FIG. 2 is a plan view of a stapes (1) before finishing, and FIG. Is a cross-sectional view showing a state in which the coated paper and the fan bone (1) are temporarily joined, and FIG.
The figure is an explanatory view of the attaching step, FIG. 6 is a perspective view of a round fan having a finished shape, and FIG. 7 is another example of a temporarily bonded state of the coated paper and the fan bone (1). FIG. 8 is an explanatory view of the main part of a conventional example, in which (1) ...... fan bone (10) …… support rod (2a) (2b) …… coated paper (3) …… mesh film

Claims (2)

[Claims] 1. A wrapping paper (2a) (2b) for a paper fan (2a) (2b) which is heat-welded to the front and back sides of the support rod (10) of the fan bone (1) by heating and pressing. ) .A thermoplastic resin mesh film (3) is placed on the inner surface of one of the coated papers, and at least the covered paper is covered by this mesh film (3).
(2a) (2b) A fan made by welding the facing surfaces of each other. 2. A method for producing a round fan, wherein the coated paper (2a) (2b) is heat-welded by heating and pressurizing the front and back sides of an area where the supporting rod (10) of the round fan bone (1) is arranged. A thermoplastic resin mesh film mesh film (3) is placed on the inner surface of one of the papers (2a) and (2b), and this mesh film (3) and one of the above-mentioned coated papers Insert the supporting area (10) (10) of the fan bone (1) between the two, and then pressurize with elastic material from the outer surface of the coated paper (2a) (2b) under heating conditions, and then A method of manufacturing a fan, wherein the outer periphery of the area where the coated paper and the supporting rods (10) (10) are disposed is finished and punched into a predetermined shape.