JPH0510073A - Accordion curtain and manufacturing method there0f - Google Patents

Abstract

PURPOSE:To offer a low priced and lightweight accordion curtain unnecessary for a framework consisting of X-shaped links. CONSTITUTION:A plurality of intermediate pieces 2 of sheets having form maintaining efficiency are provided between two surface sheets 1 and 1 at certain pitches so that they are in accord with bellows-shaped tops (b) and bottoms (a) to be shaped on the surface sheets. Bend sections 20 and 20 on both sides reaching the bottoms (a) or the tops (b)are extended together as a unit between the intermediate pieces 2, the adherence of the bend sections 20 to the inside surfaces of the surface sheets 1 is made. According to the constitution, the intermediate pieces 2 display the mechanism of a framework, and the surface sheets 1 is bent orderly in a bellows shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accordion curtain constructed by combining two surface sheets in a bellows shape and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, this type of accordion curtain has a structure of bellows formed by connecting a plurality of X-shaped links in series, and a sheet material is attached to the front and back surfaces of the accordion curtain. It is generally configured.

[0003]

In the above, the manufacturing of the frame and the attachment of the surface sheet to the frame are troublesome, the productivity is deteriorated and the cost is increased, and further, the weight is required to use the frame. In addition, it is troublesome to install and remove the curtain, and the curtain becomes heavy to open and close.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an accordion curtain which does not require a complicated frame composed of an X-shaped link and can be reduced in weight and cost, and a manufacturing method thereof.

[0005]

In order to achieve the above object, the present inventor has proposed an accordion curtain in which two surface sheets are arranged in plane symmetry to form a bellows, and between these two surface sheets. A sheet-shaped spacer piece having a constant width dimension having shape retention property for each pitch of the bellows is interposed between both surface sheets so as to give a constant width dimension of the mountain portion of the bellows. In addition, a bendable bendable portion extending toward the next valley from each of the width ends of each of the interpieces is extended, and these bendable portions are the inner surface of each surface sheet on both sides. Completed an accordion curtain characterized by being bonded to. From the same technical point of view, as an accordion curtain having a configuration in which a certain width dimension is given to the valley portion, an accordion 1 is formed between two surface sheets.
A sheet-like spacer having a constant width dimension with shape retention property is provided between both surface sheets so as to give a constant width dimension of the valley portion of the bellows for each pitch. An accordion curtain having a structure in which bendable bendable portions extending from both width end portions toward the next mountain portion are extended, and these bendable portions are adhered to the inner side surfaces of the surface sheets on both sides of the above. provide.

[0006]

With any of the above constructions, since the width between both surface sheets in the peaks or valleys between which the spacer is interposed is kept constant, when the curtain is opened, each surface sheet is
It is possible to obtain an effect that the peaks and valleys are folded in order as a fold line while being kept in a bellows shape by the bent portions of the strip extending to the next valley or peak.

In this case, if the second bent portion extending toward the peak portion or the valley portion with the intervening piece interposed next is further integrally extended to the bent portion, the shape retention of the topsheet is further improved. At the same time, the second bent portion serves as a guide for determining the interposing position of the next intervening piece, and the deviation of the arrangement pitch of the intervening piece can be prevented.

Further, in producing the curtain of the present invention,
Two surface sheets unrolled from two rolls are intermittently fed to the predetermined bonding place with the inner surface facing upward, to a length corresponding to one pitch of the ridges and valleys of the bellows, and the feeding is stopped. Sometimes, after setting from above so that both folding parts of the interstitial piece overlap with both surface sheets sent to the bonding place,
This is pressed from above to bond both folded parts to both topsheets, and then, with both topsheets existing at the bonding location facing each other with the intervening strips, the next sheet of the topsheet to the bonding location. It can be easily and efficiently manufactured by pulling it downward from the bonding place in accordance with the feeding and repeating this.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments will be described below with reference to the drawings.

1 and 2 show an example of the curtain of the present invention, in which two surface sheets 1 and 1 made of a synthetic resin sheet such as vinyl chloride or cloth are interposed at a constant pitch between them. It is configured by combining a plurality of the provided spacer pieces 2 in a bellows shape, and a carrier 4 is attached to the vertical frames 3 before and after the curtain and an appropriate spacer piece 2 in the middle.
Open and close the curtain by moving inside the curtain rail (not shown).

The inter-pieces 2 are provided on both surface sheets 1 and 1 at the valleys a of the bellows, and the inter-pieces 2 have the following peaks b.
The bent portions 20, 20 on both sides extending toward each other are integrally extended, and each bent portion 20 is bonded to the inner surface of each surface sheet 1 via an adhesive layer 21. The space piece 2 is, as shown in FIG.
Polygonal line 2 made of non-woven fabric or synthetic resin sheet with shape-retaining property, both sides of which are required for folding perforations
2 was inserted to form the bent portions 20, 20.

FIG. 4 shows the above-mentioned curtain manufacturing equipment, in which two topsheets 1 and 1 are sent from a pair of left and right rolls 5 and 5 onto a cradle 7 arranged at an intermediate laminating place. It is configured such that both surface sheets 1 and 1 are supplied and pulled out through the slit 70 formed in the central portion of the upper surface of the pedestal 7 to the curtain receiving portion 71 therebelow, and the heat which can be raised and lowered above the pedestal 7 freely. The press machine 8 was arranged.

Both surface sheets 1, 1 are intermittently received with a length corresponding to one pitch of the ridges and valleys of the bellows, that is, the pitch between the adjacent valley portions a and a with the inner surface thereof facing upward. It is fed onto the table 7, and every time one feeding is completed, the interposition piece 2 is bent upward so that the bent portions 20 and 20 on both sides thereof overlap with both surface sheets 1 and 1 on the pedestal 7. , And then the heat press 8 is lowered to press the space piece 2 to form the double bent portion 2
Nos. 0 and 20 were adhered to the inner side surfaces of both surface sheets 1 and 1 via adhesive layers 21 and 21 which were previously applied to the lower surfaces thereof. Then, in accordance with the next feeding of the surface sheet onto the pedestal 7, the two surface sheets 1 and 1 existing on the pedestal 7 are made to face each other through the intervening piece 2 and are passed through the slit 70 to the curtain receiving portion 71. The accordion curtain is manufactured by pulling out and repeating the above-mentioned work to interpose the spacer pieces 2 at a constant pitch between both surface sheets 1 and 1. The adhesive layer 21 is formed of a pressure-sensitive and heat-sensitive adhesive that does not normally have adhesiveness in order to facilitate handling of the interpiece 2, and the bent portion 20 is formed by using the heat press machine 8 as described above. Is preferably adhered to the topsheet.

According to the above accordion curtain, when the curtain is opened, the width between both surface sheets 1 and 1 is kept constant at the valley portion a by the intervening piece 2, and the mountain portion is formed by bending the bent portion 20. The width is widened at b, and thus both surface sheets 1 are folded in a bellows-like manner with the valleys a and the peaks b as fold lines.

In this case, when the curtain is closed,
There is a possibility that the surface sheet 1 may be loosened in the portion between the peak portion b and the valley portion a which is not lined by the bent portion 20, but as in the embodiment shown in FIG. The second bent portion 2 extending from the mountain portion b toward the next valley portion a
By extending 3 and adhering it to the surface sheet 1, the occurrence of slack as described above can be prevented.

When the second bent portion 23 is extended, the surface sheet is intermittently fed onto the pedestal 7 during the curtain production as shown in FIG. It is possible to stop when the bent portion 23 of the above is immersed in the slit 70, and to easily manage the arrangement pitch of the interpiece 2.

The embodiment in which the interpiece 2 is provided in the valley portion a has been described above, but as shown in FIG. 7, the interpiece 2 is formed in the mountain portion b.
In this case, the bent portion 20 extends so as to reach the next valley portion a, and further the second bent portion 20 reaches the next mountain portion b if necessary. The bent portions 23 are extended and the bent portions 20 and 23 are bonded to the inner surface of the topsheet 1 via the adhesive layer 21.

The accordion curtain shown in FIG. 7 can be implemented by the equipment shown in FIG. 8 which is similar to the equipment described above, and since the intermediary piece 2 is provided in the mountain portion b which is the maximum width portion, the above-mentioned pedestal 7 is provided. It is not necessary to provide a slit 70 having such a width, and
There is an advantage that it becomes easy to pull out the surfaces 1 and 1 bonded to the curtain receiving portion 71.

[0019]

As is apparent from the above description, according to the present invention, it is easy to simply insert an intervening piece between two surface sheets and bond the bent portions on both sides to the inner surface of the sheet. The accordion curtain with the required folding function can be obtained with a simple structure, and compared with the conventional accordion curtain that uses a frame composed of X-shaped links, its manufacture is easier and cost can be reduced, and the curtain is lightweight. Has been
The attachment and removal can be easily performed, and the curtain can be lightly opened and closed to improve the operability.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of the curtain of the present invention.

FIG. 2 is a plan view of the main part.

FIG. 3 is a perspective view of the spacer piece.

[Figure 4] Front view of curtain manufacturing equipment

FIG. 5 is a plan view of a second embodiment of the curtain of the present invention.

FIG. 6 is a front view of the curtain manufacturing facility.

FIG. 7 is a plan view of a third embodiment of the curtain of the present invention.

FIG. 8 is a front view of the curtain manufacturing facility.

[Explanation of sign]

1 ... Surface sheet, 2 ... Space piece, 20 ... Folded portion, 2
3 ... second bent portion, 5 ... roll, 7 ... pedestal, 8
.... Heat press machine.

Claims (5)

[Claims] 1. An accordion curtain in which two surface sheets are arranged side by side in plane symmetry to form a bellows, and a shape-retaining property is provided between the two surface sheets for each pitch of the bellows. A sheet-shaped spacer piece having a constant width dimension is provided between both surface sheets so as to give a constant width dimension of the mountain portion of the bellows. An accordion curtain, characterized in that bendable bends extending toward the next valley are extended, and these bends are adhered to the inner surface of each surface sheet on both sides. 2. A second bent portion integrally extending from a tip of the bent portion of the bent portions extending to the bellows mountain portion toward a valley portion provided with the next intervening piece, and The accordion curtain according to claim 1, wherein the two bent portions are adhered to the inner surface of each surface sheet. 3. An accordion curtain in which two surface sheets are arranged in plane symmetry to form a bellows, and the two surface sheets have a shape-retaining property for each pitch of the bellows. A sheet-like spacer having a constant width dimension is provided between both surface sheets so as to give a constant width dimension of the valley portion of the bellows, and both width end portions of each spacer piece are An accordion curtain characterized in that a bendable bendable portion extending toward the next mountain portion is extended, and these bendable portions are adhered to the inner surface of each surface sheet on both sides of the above-mentioned both sides. 4. A second bent portion integrally extending from a tip of the bent portion extending to the valley portion of the bellows on both sides toward a mountain portion provided with the next intervening piece, and The accordion curtain according to claim 3, wherein the two bent portions are adhered to the inner surface of each surface sheet. 5. A method of manufacturing an accordion curtain, which is formed by combining two surface sheets in a bellows shape, wherein two surface sheets fed from two rolls have a predetermined inner side. A sheet with a shape-retaining property in which a sheet is intermittently fed from both sides to the laminating place to a length corresponding to one pitch of a bellows, and folding portions are extended to both sides when feeding is stopped. And the step of setting the interposition piece consisting of the above from both sides so that the both folding parts are superposed on both surface sheets fed to the bonding place, and pressing the interposition piece from above the both folding parts on both surfaces. The step of adhering to the sheet, and the step of pulling downward from the bonding place in accordance with the next feeding of the surface sheet to the bonding place with both surface sheets existing at the bonding place facing each other with the intervening piece. And an accordion Curtain manufacturing method.