JP4106692B2 - Fabric slat manufacturing method - Google Patents

Description

  The present invention relates to a method for manufacturing blind slats.

The slat includes a flat I-shaped cross section (for example, see Patent Document 1), an N-shaped cross section (for example, see Patent Document 2), and a hemi-shaped cross section (for example, see Patent Document 3). Some have an S-shaped cross section (for example, see Patent Document 4) and some have a C-shaped cross section (for example, see Patent Document 5). Most of the slats are made of steel plates that can be press-formed into the required cross-sectional shape, but cloth slats that have a soft feel and give a mild image have also been developed. Since the fabric slats are easily twisted, glass fibers are used as the material, and the fabric finished by applying resin processing is cut into a strip shape (see, for example, Patent Document 6). In addition, as a method of preventing twisting of the fabric slats, a method of folding both edges and heat setting (for example, see Patent Document 7), or a laminated structure in which a nonwoven fabric is bonded to the front and back of a glass fiber fabric via a plastic film. There is also a known method (see, for example, Patent Document 8). Cloth slats are used for vertical blinds because they are soft and flexible (see, for example, Patent Document 8 and Patent Document 9), but they are impregnated with thermosetting resin and thermoformed into a C-shaped cross-sectional shape. Attempts have also been made to use Venetian blinds (see, for example, Patent Document 10). As a method of cutting a fabric into a plurality of slats, a method in which a water-soluble yarn is applied to the cutting portion, the water-soluble yarn is dissolved and removed, and divided into a plurality of slats (see, for example, Patent Document 10). Alternatively, there is a method in which a fragile yarn that is easily broken is applied to the cut portion, and the fragile yarn is shredded and divided into a plurality of slats (for example, see Patent Document 11).
JP-A-7-158365 (FIG. 2) Japanese Patent Laid-Open No. 5-231079 (FIG. 2) Reality 5-40237 (Actual 1-173299, Fig. 3) Reality 3-54556 (Japanese Utility Model Publication 62-103994, FIG. 7) JP-A-5-179870 (FIG. 1) Japanese Patent Publication No. 7-6339 (Japanese Patent Laid-Open No. 2-171490) Japanese Patent No. 2623291 (Japanese Patent Laid-Open No. 1-268881) Japanese Patent No. 2985208 (Japanese Patent Laid-Open No. 3-240537) Japanese Patent Publication No. 7-6339 (Japanese Patent Laid-Open No. 2-171490) JP-A-54-149246 (Fig. 6) JP 2003-27359 A (FIGS. 1 and 2)

  In the prior art in which a resin is applied in order to form a cloth slat into a required cross-sectional shape or to prevent the cloth slat from being twisted, the appearance and texture of the fabric are impaired by the applied resin (for example, Patent Document 8). , 9, 10).

  Therefore, an object of the present invention is to efficiently obtain a cloth slat having a required cross-sectional shape that does not twist during use without impairing the appearance and texture of the cloth.

The manufacturing method of the cloth blind slats according to the present invention (hereinafter referred to as “fabric slats” or simply “slats”) is as follows. (A-1) The folds 11 are aligned with the cloths 12 and aligned. The interval P between the stitches 11a and the folds 11b is kept constant, the folding direction is alternately changed for each adjacent fold, the fabric 13 is repeatedly folded, and (a-2) a plurality of folds having different folding directions alternately 11a and 11b are aligned with one plane 41a and 41b, respectively. (A-3) The fabric is continued in parallel with the two planes 41a and 41b facing each other, and the first turn back 14b and the last turn back 14a. (B-1) The side plane members 16a and 16b are respectively applied to the two parallel planes 41a and 41b and the two planes 41a and 41b are parallel to each other. To maintain (B-2) A pair of mold members 17a and 17b whose surfaces 19a and 19b are faced in parallel are respectively applied to the turn-back turns 14a and 14b of the front and back that follow in parallel, and the turn-back turns 14a and 14b that face and turn are maintained in parallel. (B-3) fixedly setting the shape of the fibers constituting the fabric; (c) after the fixed setting, dividing the fabric along the fold line 11 to form a plurality of slats 18; One feature.

  A second feature of the method for producing a fabric slat according to the present invention is, in addition to the first feature described above, a convex curved surface in which the parallel facing surface 19a of one mold member 17a of the pair of mold members is expanded, The surface 19b facing in parallel of the other mold member 17b is a concave curved surface, and the convex curved surface (19a) and the concave curved surface (19b) have a cross-sectional shape fitted to each other, and one convex curved surface (19a). And the other concave curved surface (19b) is formed in such a manner as to form convex ridges 20a and concave grooves 21b that face each other in parallel.

  A third feature of the method for producing a fabric slat according to the present invention is that, in addition to any of the first and second features, the fabric 13 is made of polyester fiber, and the folded laminate 15 is heated. The point is to fix the shape of the fiber.

  A fourth feature of the method for producing a fabric slat according to the present invention is that, in addition to any of the first, second and third features, the fabric 13 is a woven or knitted fabric (woven fabric or knitted fabric). A brittle stitch 12a having a required interval P corresponding to the width W and having a low bending resistance in the width direction perpendicular to the continuous direction of the warp yarn 22 due to a difference in any of the woven / knitted structure, warp type, and woven / knitted density. The cloth 13 is provided in a straight line in the continuous direction of the warps 22.

  The fifth feature of the method for producing a fabric slat according to the present invention is that, in addition to any of the first, second and third features, the fabric is a non-woven fabric and has a required interval according to the width of the slat 18. The cloth 18 is provided with a plurality of trace lines (12) in which the cloth 12 is arranged in parallel and in a straight line.

  In the present invention (Claim 1), the fabric surrounded by the warp and weft of the woven fabric and the knitting yarn of the knitted fabric and the fabric surrounded by the stitch are arranged in a straight line in the vertical and horizontal directions. Easy to fold in a straight line. The front folding back 13a and the back folding back 13b that are folded and overlapped with each other are symmetrical (front and back) symmetrically with respect to the crease 11, and the crease 11 that is the border is a straight line. For this reason, the continuous direction of the warp 12 of the front folding back 13a and the back folding back 13b folded by aligning the fold 11 with the fabric 12 that is easy to fold is parallel to the fold 11, and the front folding back 13a and the back folding back 13b. The inner cloth 23 is also symmetric with respect to the crease 11 (left and right). Accordingly, the folding directions are alternately changed and folded at a predetermined interval P, and the warp yarns 22 and the left and right edges 24a, 24b of the plurality of slats in the state of the folding margins 13a, 13b of the overlapping folded laminate 15 are straight. The left and right edge edges 24a and 24b constitute the front and back parallel planes 41a and 41b, and the thicknesses of the folding margins 13a and 13b are the same. The turn back allowance 14b and the last turn back allowance 14a are also parallel.

  In the present invention, instead of individually fixing and setting the fabric slats sewn and sewn one by one, each warp 22 of a plurality of wrapping allowances 13a, 13b, 14a and 14b to be divided into slats 18 is provided. The fiber shape (woven or knitted structure) is fixedly set in a state where the left and right end edges 24a and 24b are straight and aligned in parallel, and then the fabric 13 is divided into a plurality of slats 18 along the fold line 11. Therefore, there is no occurrence of fiber shrinkage after that, the sewing thread contracts and troubles such as puckering do not occur, and the continuous direction of the internal fabrics 23 and warps 22 of all the slats 18 are strictly parallel and Align in a straight line. For this reason, the slats 18 having a required cross-sectional shape corresponding to the surface shape of the mold material 17 can be obtained without the occurrence of twisting due to irregularities in the continuous direction of the internal fabrics 23 and warps 22 and contraction spots of the fibers. In the present invention, instead of individually molding a plurality of cut fabric slats one by one, a plurality of continuous fabric slats before cutting are collectively fixed and set as a folded laminate 15. Since it is formed into the required cross-sectional shape, the quality of the cloth slats is uniform, no light leakage gap is formed between adjacent cloth slats, and a cloth blind having an excellent light shielding function can be obtained efficiently.

  Therefore, according to the present invention (Claim 2), the required cross-sections such as an N-shape, a hem-shape, an S-shape (FIGS. 1 to 3), a C-shape, etc. according to the shapes of the ridges 20 and the grooves 21 on the surface of the mold member 17 A plurality of cloth slats 18 having a shape can be obtained in a lump, and the molds required for that purpose are a pair (two pieces) of mold members 17a and 17b and a pair (two pieces) of flat side frame members 16a and 16b. Therefore, the present invention can be carried out easily and economically without requiring a special device, and a blind having a variety of design in accordance with the cross-sectional shape of the slat and the design of the fabric can be obtained.

  According to the present invention (Claim 3), the fabric 13 folded and loaded in the molds (16a, 16b, 17a, 17b) can be variously simply left in the heating chamber together with the molds for a certain period of time. The cloth slat 18 having a cross-sectional shape can be obtained efficiently.

  In the present invention (Claim 4), since the brittle fabric 12a that is easy to fold is provided in the cloth 13 at a constant interval P, the cloth 13 can be easily folded at a constant interval according to the width W of the slat, and the cloth 13 is fixed. The cloth slats 18 can be efficiently obtained without taking time and effort to load the molds (16a, 16b, 17a, 17b).

  Furthermore, in the present invention (Claim 5), since the trace rows (12) are provided at a constant interval P according to the width W of the slats, a fabric slat can be obtained using a nonwoven fabric.

  The woven and knitted fabric 13 has the same woven and knitted structure and fiber structure of the respective folding allowances 13a, 13b, 14a, and 14b. The weft and the warp 22 each have one type of yarn, preferably a polyester fiber yarn. Use. The division of the fabric along the eyes 11 (FIG. 3) is performed by melting and breaking the synthetic fiber with a laser beam, ultrasonic waves, or the like in the case of the fabric made of the thermoplastic synthetic fiber. For fabrics made of glass fibers and other non-thermoplastic fibers that are difficult to melt and break, as described in Patent Document 10, the space between the knitted fabric 13a and the knitted fabric 13b that become the slats 18 can be dissolved in water or an organic solvent. The fabric 13 is knitted by connecting with the yarn 25, or the knitted fabric 13a to be the slat 18 and the knitted fabric 13b are connected with the weak yarn 25 as described in Patent Document 11. The fabric 13 is knitted and the knitted fabrics of the knitted fabrics 13a and 13b are fixedly set, and then the yarns 25 are melted or shredded and divided into a plurality of slats 18.

  The fixed set of the shape of the fibers (woven / knitted structure) constituting the fabric can be performed by heat treatment in the case of the fabric made of thermoplastic synthetic fibers. In a fabric made of non-thermoplastic fibers, the shape of the fibers (woven and knitted fabric) can be fixed and set by chemical treatment that changes the polymer structure of the fibers. In the case of a cloth made of an inert fiber that cannot chemically change the polymer structure, such as glass fiber, it can be performed by impregnating with an adhesive resin. Regardless of which method is used, the fixed shape of the fiber acts on the fiber during the production (weaving / knitting) of the fabric, revealing the latent stress accumulated inside the fiber, and shrinking the fiber. The folding laminate 15 is humidified or heated so that the latent stress disappears, and the fiber is relaxed.

  As described in Patent Documents 10 and 11, a fabric (FIG. 1) woven or knitted by a woven or knitted structure in which a yarn cannot be unwound from a cutting opening serving as an edge 24 of a slat, or a yarn from a cutting opening. In the fabric fixed and set so as not to be unraveled, the fabric 13 can be divided into a plurality of slats 18 by applying a normal cutter to the fold 11.

  In a non-woven fabric without a woven or knitted structure, a trace row (12) for facilitating folding is provided. In the nonwoven fabric, the trace row (12) serves as a substitute for the fabric by the woven or knitted structure, but it may be a press trace (concave portion) by embossing or a perforation scattered continuously like a perforation. Good.

  The side frame member 16 is formed by arranging the two side frame members 16a and 16b in parallel, and connecting one end of the side frame members 16a and 16b with a single mold member 17b to form a box-shaped cross section. After loading the tatami laminate 15, the remaining mold material 17a closes the opening of the casing mold, and the fabric 13 (15) is pressed between the facing mold material 17a and the mold material 17b to constitute the fabric. The shape of the fiber (woven or knitted structure) is fixedly set (FIG. 1). However, particularly in the case of the slat 18 having a curved cross-sectional shape, as shown in FIG. 2, the housing mold is made into an assembly type with two side frame members 16 a and 16 b and two mold members 17 a and 17 b, and While applying the mold material to the turn back and back allowances 14a and 14b, applying the side frame material to the flat surfaces 41a and 41b where the folds overlap, and sandwiching the folded laminate 15 with the left and right side frame materials 16a and 16b, The folded laminate 15 is pressed between the mold material 17a and the mold material 17b to be bent and deformed, and the shape of the fibers constituting the fabric may be fixed and set (FIG. 1).

  The mold members 17a and 17b for forming the slats 18 having an N-shaped or S-shaped cross-section are formed with ridges 20 and grooves 21 that are parallel to the parallel-facing surface 19, and the parallel-facing surfaces 19a and 17b. It is assumed that the convex flange 20a and the concave groove 21b of 19b, and the convex flange 20b and the concave groove 21a have an N-shaped or S-shaped cross-sectional shape in which they are fitted and adhered to each other.

It is a perspective view in the manufacture process of the slat concerning the present invention, and is enlarging and showing a part encircled. It is a perspective view in the manufacture process of the slat which concerns on this invention. It is a perspective view showing the cloth and slat according to the present invention in comparison.

Explanation of symbols

P: Interval W: Width 11: Fold 12: Cloth 13: Fabric 14: Folding allowance 15: Folding laminate 16: Side frame material 17: Mold material 18: Slat 19: Opposing surface 20: Convex ridge 21: Concave groove 22 : Warp yarn 23: Internal fabric 24: Edge of slat 25: Yarn 41: Plane

Claims (5)

(A-1) The fold line (11) is aligned with the cloth line (12) and aligned, and the interval (P) between the adjacent fold line (11a) and the fold line (11b) is set to be constant, Fold the fabric (13) repeatedly by alternately changing the folding direction to
(A-2) A plurality of folds (11a, 11b) having different folding directions alternately are aligned on one plane (41a, 41b), respectively.
(A-3) The fabric (13) continues in parallel with the two planes (41a and 41b), and the first turnback (14b) and the last turnback (14a) are front and back in parallel. Folded laminate (15) following
(B-1) The side plane members (16a and 16b) are respectively applied to the two planes (41a and 41b) following the parallel, and the two planes (41a and 41b) are maintained in parallel.
(B-2) A pair of molds (17a and 17b) whose surfaces (19a and 19b) face in parallel are respectively applied to the turn-back allowances (14a and 14b) of the front and back that continue in parallel. 14b) is kept parallel,
(B-3) fixing the shape of the fibers constituting the fabric (13);
(C) A method for manufacturing a slat for a blind made of cloth by dividing the fabric (13) along the fold (11) into a plurality of slats (18) after the fixing and setting. The parallel facing surface (19a) of one mold member (17a) of the pair of mold members is a convex curved surface, and the parallel facing surface (19b) of the other mold member (17b) is a concave curved surface. The convex curved surface (19a) and the concave curved surface (19b) form a cross-sectional shape that fits to each other, and one convex curved surface (19a) and the other concave curved surface (19b) face each other in parallel and are convex ( The method for manufacturing a slat for a fabric blind according to claim 1, wherein 20a) and a groove (21b) are formed. The fabric blind slat according to any one of claims 1 and 2, wherein the fabric (13) is made of polyester fiber, and the folded laminate (15) is heat-treated to fix and set the shape of the fiber. Law. The fabric (13) is a woven / knitted fabric, and the warp (22) has a required interval (P) corresponding to the width (W) of the slat (18) depending on any of the woven / knitted structure, warp type, and woven / knitted density. The brittle fabric (12a) having a low bending resistance in the width direction orthogonal to the continuous direction of) is provided on the fabric (13) in a straight line in the continuous direction of the warps (22). A method for producing a fabric blind slat according to claim 3. The fabric (13) is a non-woven fabric, and a plurality of trace rows (12), in which the fabric (12) continues in a straight line and in parallel with a required interval (P) according to the width (W) of the slat (18), 18. A method for producing a cloth blind slat according to any one of claims 1, 2, and 3 provided in 18).

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