JP2003166383A - Accordion-pleated resin curtain for partitioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accordion-pleated resin curtain for partitioning, which facilitates smooth bellow-like folding thereof without leaning the bendability of a plurality of joint portions in the same direction. <P>SOLUTION: The accordion-pleated resin curtain is integrally formed of a plurality of curtain main bodies 1 and the plurality of joint portions thinner in thickness and narrower in width than the curtain main bodies 1 such that the main bodies 1 and the joint portions 2 are alternately arranged, and the curtain is rendered foldable like bellows by folding the joint portions 2 alternately to a front side and a rear side thereof. According to the accordion-pleated curtain, each joint portion 2 is arranged at a thickness central location of each curtain main body 1 so that the bendability of each joint portion 2 to the front side becomes the same as that to the rear side, to thereby facilitate smooth bellow-like folding of the curtain. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accordion type resin curtain for partitions used in factories and warehouses.

[0002]

2. Description of the Related Art Conventionally, a plurality of curtain main bodies and a plurality of connecting portions having a narrower width than the curtain main body are integrally formed so as to be alternately connected to each other, and the plurality of connecting portions are provided on the front surface side and the back surface side. An accordion-type transparent resin curtain is known that is formed by alternately folding and folding it into a bellows shape.

[0003]

In the conventional accordion type curtain, a plurality of connecting portions are provided on the front surface side or the back surface side of the curtain main body, as disclosed in, for example, Japanese Patent Laid-Open No. 2000-238131. Is formed so as to be flush with any one of the surfaces, and each of the connecting portions has a structure that is easily bent on either the front surface side or the back surface side but is hard to be bent on the other side. There was a risk that the folding of the shape would not be done smoothly.

The present invention has been made in view of the above conventional circumstances, and the object thereof is to smoothly fold a bellows-like shape without bending the plural connecting portions in the same direction. It is to provide an accordion type resin curtain.

[0005]

In order to achieve the above object, the present invention provides a plurality of curtain main body portions and a plurality of connecting portions having a narrower width than the curtain main body portions as described in claim 1. Accordion type resin curtain, which is integrally molded so as to be alternately continuous and is formed so as to be freely foldable in a bellows shape by alternately bending the plurality of connecting portions to the front surface side and the back surface side, and bending the plurality of connecting portions. It is characterized in that it is formed so that the same properties are obtained on the front surface side and the back surface side.

When formed in this way, the respective connecting portions can be bent well regardless of the front surface side or the back surface side, so that the bellows-like folding can be performed smoothly.

As a specific mode for making the above-mentioned respective connecting portions have the same degree of bending property on the front surface side and the back surface side, the plurality of connecting portions are provided at the central portion in the thickness direction of the curtain main body. An aspect (claim 2) and an aspect (claim 3) in which the plurality of connecting portions are provided in a slanted manner between the opposing side surface portions of the adjacent curtain main body portions can be cited. Here, as a more specific form for providing the connecting portion in an inclined shape between the side surfaces facing each other in the adjacent curtain main body portions, one end side of the inclined connecting portion has a side edge portion on the front surface side of one curtain main body portion. And the other end side is formed so as to be located at the side edge portion on the back surface side of the other curtain body portion (see FIG. 5),
A configuration in which one end side of the inclined connecting portion is located closer to the side edge portion on the front surface side of one curtain body portion, and the other end side is located closer to the side edge portion on the back surface side of the other curtain body portion (Fig. 6)) and the like.
Of the above-mentioned respective modes, a mode in which a plurality of connecting portions are provided in the central portion in the thickness direction of the curtain main body is preferable because proper bending can be obtained without distinction between the front and back sides of each connecting portion.

According to a fourth aspect of the present invention, a plurality of curtain body portions and a plurality of connecting portions having a narrower width than the curtain body portion are integrally formed so as to be alternately arranged. An accordion type resin curtain formed by folding the connecting portion alternately to the front surface side and the back surface side so as to be foldable in a bellows shape. Set up alternately,
It is characterized in that the plurality of connecting portions are formed so that the flexibility thereof is alternately remarkable on the front surface side and the back surface side.

When formed in this manner, in the plurality of connecting portions, the connecting portions that are easily bent toward the front surface and the connecting portions that are easily bent toward the back surface are alternately present, so that the bellows-like folding can be performed smoothly. become.

As a preferred method for producing the accordion type resin curtain according to the present invention, a T die (melt extruder) is used.
Passing the molten resin extruded from between a pair of rolls, the so-called polishing roll method of forming a soft resin sheet having a desired thickness by cooling the molten resin with both rolls while adjusting the thickness by sandwiching both rolls, A manufacturing method in which the molten resin is continuously supplied so as to form a bank (resin reservoir) at the portion where the molten resin is supplied to the pair of rolls can be mentioned.

Here, the pair of rolls have a plurality of large diameter portions for forming the above-mentioned plurality of connecting portions at opposed positions, and a plurality of tapers for forming the above-mentioned inclined connecting portions. It is preferable to use one having large-diameter portions at opposing positions, and one having large-diameter portions alternately arranged so that the above-mentioned connecting portions are alternately formed closer to the front surface side and closer to the rear surface side. Further, by using metal rolls as those rolls, it is possible to manufacture a curtain which is particularly transparent and has little distortion and whose other side is clear.

The material of the resin curtain according to the present invention is not particularly limited, but it is preferably made of soft PVC (polyvinyl chloride). In addition to this, polypropylene, polyethylene, ethylene-acetic acid It may be made of a polyolefin resin such as a vinyl copolymer or an ethylene-methylmethacrylate copolymer.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an accordion type resin curtain (hereinafter referred to as "curtain") according to the present invention will be described below with reference to the drawings. Figure 1 shows curtain A
The curtain A is integrally molded so that a plurality of curtain main body portions 1 and a plurality of connecting portions 2 having a narrower width than the curtain main body portion 1 are alternately formed, and the plurality of connecting portions are formed. It is formed so that it can be freely folded into a bellows shape by alternately bending 2 on the front surface side and the back surface side, and the hanging metal fittings 10 provided on the upper part of each curtain body 1 are slidably attached to the curtain rails 11. Attached to the hanging equipment 12
It is supported so that it can be opened and closed.

In the curtain A, as shown in FIG. 2, each connecting portion 2 is provided in the central portion of the curtain main body 1 in the thickness direction, and each connecting portion 2 has a flexibility with respect to the front surface side and the back surface side. It is formed so as to have the same degree. As a result, in the curtain A, the respective connecting portions 2 bend well regardless of whether the front surface side or the rear surface side is provided.
The opening and closing work from the unfolded state shown in FIG. 3 to the bellows-shaped folded state shown in FIG. 4 through the intermediate state shown in FIG. 3 can be performed extremely smoothly.

5 to 7 show modified examples of the above-mentioned respective connecting portions 2, and FIGS. 5 and 6 show that a plurality of connecting portions are provided in a slanted shape between the facing side surfaces of the adjacent curtain main body portions. FIG. 7 shows a form in which the bendability of the plurality of connecting portions is alternately prominent on the front surface side and the back surface side.

That is, in FIG. 5, opposite side surface portions 1a, 1 of the adjacent curtain main body portions 1, 1 are arranged.
The connecting portion 3 is provided in a slanted shape across b, and the inclined connecting portion 3 has one end located at the side edge 1c on the front surface side of the one curtain main body 1 and the other end having the other curtain main body. It is formed so as to be located at the side edge portion 1d on the back surface side of 1,
The bendability of each of the inclined connecting portions 3 is formed to be approximately the same on the front surface side and the back surface side. As a result, in the curtain A, the respective connecting portions 3 bend well regardless of the front surface side or the back surface side, and the opening and closing work from the deployed state to the bellows-shaped folded state can be smoothly performed. Has become.

In FIG. 6, a connecting portion 4 is provided in an inclined shape between the side surface portions 1a and 1b facing each other in the adjacent curtain main body portions 1 and 1, and the inclined connecting portion 4 is provided.
Is formed so that one end side is located closer to the side edge 1c on the front surface side of the one curtain main body 1 and the other end side is located closer to the side edge 1d on the back surface side of the other curtain main body 1. The bendability of each of the inclined connecting portions 4 is formed to be approximately the same on the front surface side and the back surface side. As a result, in the curtain A, the respective connecting portions 4 bend well regardless of whether the front surface side or the rear surface side is provided, and the opening and closing work from the deployed state to the bellows-shaped folded state can be smoothly performed. Has become.

In FIG. 7, a connecting portion 5a formed on the front surface side of the curtain body 1 and a connecting portion 5b formed on the rear surface side are alternately provided, and the connecting portion is easily bent on the back surface side. 5a and the connecting portion 5a, which is easily bent on the front surface side, are formed alternately. This allows curtain A
The respective connecting portions 5a and 5b are easily bent alternately with respect to the front surface side and the back surface side, and the opening and closing work from the deployed state to the bellows-shaped folded state can be smoothly performed.

8 and 9 show an example of a method of manufacturing the curtain A shown in FIG. In FIG. 8, 20 is a T die (melt extruder) for extruding a molten resin at a predetermined temperature, which is a molding material for the curtain A, and 21a and 22a are a pair of metal rolls. The molten resin 23 thus obtained is passed between a pair of metal rolls 21a and 22a, the sheet thickness is adjusted by sandwiching the rolls 21a and 22a, and the rolls 21a and 22a are cooled.
This is a so-called polishing roll method for molding the soft resin sheet 24 having a desired thickness, and the pair of metal rolls 21a, 22a
The molten resin 23 is continuously supplied so that a bank (resin reservoir) 25 is formed in the portion where the molten resin 23 is supplied in a. The temperature of the molten resin is preferably about 180 ° C, and the temperature of the metal rolls 21a, 22a is preferably about 50 ° C. According to such a manufacturing method, it is possible to manufacture the curtain A which has good transparency and little distortion and whose other side can be seen clearly.

A pair of metal rolls 21a, 2 used here
2a has a plurality of large-diameter portions for forming the plurality of connecting portions 2 described above at opposed positions. That is, the pair of metal rolls 21a and 22a, as shown in FIG.
A roll body 26 for forming the curtain body 1,
The large-diameter portions 27, 27 for forming the above-mentioned connecting portion 2 are provided in an appropriate position in 26 so as to face each other. By using such metal rolls 21a, 22a, the above-mentioned curtain A having a smooth surface can be obtained. Can be continuously molded from the step of extruding the raw material resin.

When the curtain A shown in FIG. 5 is manufactured,
As shown in FIG. 10, a pair of metal members provided with a plurality of tapered large-diameter portions 28, 28 facing each other at appropriate positions of the roll body portions 26, 26 for forming the above-mentioned inclined connecting portion 3. Rolls 21b and 22b are used.

When the curtain A shown in FIG. 6 is manufactured,
As shown in FIG. 11, a pair of metal members provided with a plurality of tapered large-diameter portions 29, 29 for forming the above-mentioned inclined connecting portion 4 at appropriate positions of the roll main body portions 26, 26 so as to face each other. Rolls 21c and 22c are used.

When the curtain A shown in FIG. 7 is manufactured,
As shown in FIG. 12, large-diameter portions 27 for alternately forming the above-described connecting portions 5a and 5b on the front surface side and on the back surface side are alternately located at appropriate positions of the roll main body portions 26, 26. The provided metal rolls 21d and 22d are used.

PVC (polyvinyl chloride) 10 is a preferable example of the resin raw material for molding the above-mentioned curtain A.
The compounding composition may be 0 part by weight, 55 parts by weight of DOP (plasticizer), 5 parts by weight of epoxidized soybean oil, and 1 part by weight of a Ba—Zn stabilizer. It is optional to add an ultraviolet absorber, a blue light absorber for insect repellent, an antistatic agent, etc. to the above composition.

Further, it is preferable to form an ultraviolet-curable coating layer on both front and back surfaces of the curtain body 1 of the soft resin sheet obtained by the above-mentioned polishing roll method using the resin raw material having the above-mentioned composition.

The ultraviolet curable coating layer has an elongation of 5
A UV-curable urethane-acrylate paint whose pencil hardness is adjusted to be 0% or more and harder than H is 10 to 30 μm on both front and back surfaces of the curtain body 1 in the soft resin sheet.
A preferable embodiment is one in which an ultraviolet-curable urethane-acrylate coating layer is formed by coating so as to have a thickness of 1. When the elongation percentage is less than 50%, the paint layer is cracked when the sheet is bent, and when the pencil hardness is made softer than H, the scratchability is the same as that of the PVC sheet alone. Here, the pencil hardness means the hardness of the pencil lead when the surface of the sheet is scratched when the sheet is scratched by the lead of the pencil. It is more preferable to add silafluofen as a non-volatile or low-volatility insect repellent to the ultraviolet-curable coating layer.

As a preferred dimension of the accordion type curtain according to the present invention, the curtain main body has a width of 100.
The thickness may be about mm, the thickness is about 1.4 mm, the width of the connecting portion is about 16 mm, and the thickness is about 0.4 mm.

Although the accordion-type transparent resin curtain and the method for producing the same according to the embodiment of the present invention have been described above, the accordion-type resin curtain according to the present invention has the above-mentioned constitution, production method, compounding composition, dimensions and the like. It is needless to say that the present invention is not limited to the embodiment, and various modifications can be made within the scope of the technical idea described in the claims.

[0029]

As described above, the present invention provides claim 1.
By adopting the configuration of ~ 4, the problem of the conventional accordion type curtain that each connecting part bends only in one direction and is hard to bend in the other direction is solved, and the bellows-like folding is smoothly performed. By doing so, it was possible to provide an accordion type resin curtain that can be easily opened and closed during use. Further, in the case of the structure of claim 2, proper bendability can be obtained without distinction between the front and the back at each connecting portion, and there is an effect that the bellows-like folding becomes smoother.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a curtain according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing an example of an embodiment of a curtain according to the present invention.

FIG. 3 is a plan view showing an intermediate state of folding in a bellows shape.

FIG. 4 is a plan view showing a state of being folded in a bellows shape.

FIG. 5 is an enlarged sectional view showing another example of the embodiment of the curtain according to the present invention.

FIG. 6 is an enlarged cross-sectional view showing another example of the embodiment of the curtain according to the present invention.

FIG. 7 is an enlarged cross-sectional view showing another example of the embodiment of the curtain according to the present invention.

FIG. 8 is a simplified diagram showing an example of a method for manufacturing a curtain according to the present invention.

FIG. 9 is a simplified diagram showing an example of a method for manufacturing the curtain shown in FIG.

FIG. 10 is a simplified diagram showing an example of a method for manufacturing the curtain shown in FIG.

11 is a simplified diagram showing an example of a method for manufacturing the curtain shown in FIG.

12 is a simplified diagram showing an example of a method for manufacturing the curtain shown in FIG. 7.

[Explanation of symbols]

A: Curtain 1: Curtain body 2, 3, 4, 5a, 5b: Connection part 20: T die 21a-21d, 22a-22d: A pair of metal rolls 25: Bank (resin reservoir) 27, 28, 29: Large diameter part

Claims (4)

[Claims] 1. A plurality of curtain main bodies and a plurality of connecting portions having a narrower width than the curtain main body are integrally molded so as to be alternately connected, and the plurality of connecting portions are alternately bent to a front surface side and a back surface side. An accordion-type resin curtain that is formed so as to be foldable in a bellows shape, characterized by being formed so that the flexibility of the plurality of connecting portions is about the same for the front surface side and the back surface side. Accordion type resin curtain. 2. The plurality of connecting portions are provided in a central portion in the thickness direction of the curtain main body portion, and the connecting portions are formed so that the flexibility of the connecting portions is substantially the same on the front surface side and the back surface side. An accordion-type resin curtain for partitioning according to claim 1. 3. The plurality of connecting portions are provided in a slanted shape over the side surfaces facing each other in adjacent curtain main bodies, so that the flexibility of each connecting portion is substantially the same for the front surface side and the back surface side. It is formed, It is characterized by the above-mentioned.
Accordion type resin curtain for partitioning described. 4. A plurality of curtain main bodies and a plurality of connecting portions having a narrower width than the curtain main body are integrally molded so as to be alternately connected, and the plurality of connecting portions are alternately bent to a front surface side and a back surface side. An accordion-type resin curtain formed to be foldable in a bellows shape, wherein the plurality of connecting portions are alternately provided on the front side and the rear side of the curtain main body, and the flexibility of each connecting portion is increased. An accordion-type resin curtain for partitioning, characterized in that the ridges are formed so as to be noticeable alternately on the front surface side and the back surface side.