JP2696679B2 - How to fold curtains - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pleating method for corrugating a curtain with a number of longitudinal folds.

[0002]

2. Description of the Related Art A corrugated pleated curtain is known as a curtain, in which ridges and valleys having an arc-shaped cross section are formed alternately and long in the length direction by molding and fixed by heat treatment. An example of a method for forming the fold is described in Japanese Patent Publication No. Hei 4-23025. According to this method, the first pattern paper and the second paper pattern according to the size of the curtain fabric are overlapped, and the columnar body outside the pattern paper and arranged in parallel to the direction of the fold of the curtain is formed as the first pattern.
The pattern paper and the second paper pattern are arranged so as to be interleaved alternately and attached to the outside of the paper pattern, and these columnar bodies are pushed into the other paper pattern to bend so as to form a corrugated cross section, and the steam The above-mentioned folds are fixed by using, and each is formed into a paper mold having a corrugated elastic force. The corrugated paper mold is stretched, and a curtain is formed between the stretched first and second patterns. After inserting the cloth and inserting the curtain cloth, it is restored to a predetermined form by the elastic force of the corrugated paper pattern and the paper form is set, and the set paper form is put into a processing pot and deaerated. Then, steam is supplied and steaming is performed, and the inside of the post-steaming treatment vessel is cooled under reduced pressure. Subsequently, steaming and reduced pressure cooling are repeated to drape the curtain fabric.

[0003]

However, the above-described method can be used for embedding curtain fabric between the first and second patterns, even if the step of forming the patterns on the first and second patterns is omitted. It requires a large space for expanding the above-mentioned pattern, a high-pressure processing pot and a vacuum pump for processing the inserted curtain fabric by high-pressure steam, and a space for installing them. Further, the first and second patterns are molded. A space for stacking the first and second patterns in an extended state, a space for arranging a large number of pillars at intervals so that the expanded pattern can be placed thereon,
A large-capacity high-pressure processing tank and a vacuum pump for processing the paper pattern by high-pressure steam and a space for installing them were required.

In the above-mentioned method, a curtain fabric is sandwiched between the first and second patterns, and the curtain fabric is transported to a high-pressure processing pot and processed by steaming. After degassing, steam was supplied, followed by cooling under reduced pressure, and furthermore, steaming and cooling under reduced pressure were repeated, so that the productivity was low and it was not suitable for mass production. Since the above-described method uses the thermoplastic property of the curtain fabric to fold corrugated sheets, it is used for curtains having a low content of thermoplastic synthetic fibers, particularly, polyester fibers having good shapeability. I couldn't do it.

According to the present invention, a corrugated fold is formed by subjecting a curtain fabric made of an arbitrary fiber to resin processing and press processing, thereby eliminating the need for a pattern, a large-capacity high-pressure processing pot, and a vacuum pump. In addition, the size of the apparatus can be reduced to save space and improve productivity.

[0006]

A first means of the present invention is to impregnate a curtain material made of an arbitrary fiber with a mixture of a thermoplastic resin and a thermosetting resin so that the thermosetting resin is not cured. After drying at a low temperature and then sewing the desired shape of the curtain, the curtain is sandwiched between an upper mold and a lower mold which can be hermetically sealed, and a superheated steam is jetted from one mold for a predetermined time. And vulcanizing the thermosetting resin by steaming to cure the thermosetting resin. Thereafter, the upper mold is removed and the curtain is cooled with air.

According to a second means, in the first means, an interlining made of thermoplastic synthetic fiber having a basis weight of 30 to 400 g / m ² is attached to the folded portion of the hem of the curtain at the time of sewing. However, the basis weight of this interlining is 30 g / m
If it is less than ^2, the effect of providing the interlining is not obtained, while if it is more than 400 g / m ² , the thickness of the folded portion of the hem becomes excessively large and shaping becomes difficult, which is not preferable.

The above-mentioned curtain fabric is a woven fabric, a knitted fabric or a non-woven fabric made of arbitrary fibers such as natural fibers, regenerated fibers, semi-synthetic fibers and synthetic fibers, and any one of the above fibers is used alone. Alternatively, two or more kinds may be used in combination by means such as blending, twisting, weaving, and knitting. However, when the content of thermoplastic synthetic fibers such as nylon, polyester, and acrylic is 50% by weight or less of all fibers,
It is preferable to use the second means.

In the present invention, the curtain is impregnated with a mixture of a thermoplastic resin and a thermosetting resin. As the thermoplastic resin, vinyl chloride resin, vinyl acetate resin,
Examples thereof include a polyether-based urethane resin, and a polyether-based urethane resin is particularly preferable because it is excellent in resilience, shapeability, shape retention, and the like. Examples of the thermosetting resin include a urea formalin resin, a melamine resin, and a glyoxal-based resin.A glyoxal-based resin is preferably combined with cellulose molecules and is excellent in washing resistance and chlorine resistance. .

[0010] The above-mentioned thermoplastic resin and thermosetting resin are each diluted with an appropriate amount of water and mixed. In this case, the mixing ratio of the thermoplastic resin and the thermosetting resin is preferably 1/10 to 10/1, and when the amount of the thermoplastic resin is small and the above mixing ratio is less than 1/10, the shaping property of the curtain is reduced. When the mixing ratio is more than 10/1 due to a large amount of thermoplastic resin, the shape retention after shaping is deteriorated.

Next, the above-mentioned curtain material is impregnated with a diluted mixed liquid of the thermoplastic resin and the thermosetting resin.
This impregnation can be performed by any means such as dipping, coating and spraying. However, the impregnation amount (the amount with solid content) is preferably 1 to 20% by weight based on the fiber weight of the curtain material. If the impregnated amount is less than 1% by weight, the desired effect cannot be obtained. On the other hand, if it exceeds 20% by weight, the curtain becomes hard and the shape retention, texture and appearance deteriorate.

Drying of the curtain material impregnated with the above-mentioned diluted mixed solution can be performed by any means such as hot air drying, infrared drying, and cylinder drying. However, this drying needs to be performed to such an extent that the thermosetting resin is not cured, and the temperature of the curtain is preferably 80 to 100 ° C. If the temperature of the curtain is lower than 80 ° C., the drying time becomes longer and a large dryer is required. If the temperature exceeds 100 ° C., the thermosetting resin starts polycondensation, and the shaping work is performed. And the shape retention is reduced. The drying time is 2 to 1
0 minutes is preferable, and if it is less than 2 minutes, the drying becomes insufficient, and if it exceeds 10 minutes, the thermosetting resin starts polycondensation.

The dried curtain material is sewn into a desired curtain shape. That is, cut to the desired size,
Edges can be overturned around and vertical stitching folds can be formed at the top at predetermined intervals as needed. These stitching sewn together so that two or more stitches are tightly attached to one place. Or can form Sanzan folds. In addition, an interlining can be attached to the top portion, a bag portion can be formed by folding the hem portion, or an interlining material can be sealed in the bag portion. In the second means, a woven fabric, a knitted fabric, a nonwoven fabric, or the like made of thermoplastic synthetic fiber is sealed as an interlining in the bag portion.

A desired portion of the sewn curtain including at least a hem is sandwiched between an upper die and a lower die of a crimping press, and is treated by wet heat. For example, if one or more peaks are formed at predetermined intervals on the top of the curtain,
The above processing is performed by removing the sewing fold forming portion. The upper mold and the lower mold of the press may be any as long as they can mesh with each other, sandwich the curtain, treat with superheated steam, and form the curtain into a corrugated sheet. An example is a plate in which a number of holes for steam injection are drilled. The surface of the corrugated sheet is covered with a fiber sheet such as a felt, a nonwoven fabric, a woven fabric, or a knitted fabric, so that generation of shine due to pressing can be prevented. Then, a heater for steam heating is provided on the back side of one corrugated sheet, and a heater for corrugated sheet heating is provided on the back side of the other corrugated sheet, so that the temperature of the steam supplied to the back side of one corrugated sheet is overheated. Preferably, it can be maintained.

In this press, the curtain is formed into a corrugated sheet by an upper mold and a lower mold, and the thermosetting resin in the curtain is cured in that state. Mold collapse is easy to occur after molding.
If the temperature is higher than 80 ° C., shrinkage of the fiber and discoloration of the dye are likely to occur after processing, which is not preferable. However, the steam temperature at the time of the press can be changed depending on the type of fiber constituting the curtain. For example, 180 ° C. is used when the curtain is made of cotton fiber, 110 ° C. is used when the curtain is made of acrylic fiber, and polyester fiber is used. In this case, 150 ° C. is preferable.

The time for pressing at the above-mentioned temperature is preferably 1 to 5 minutes. If the treatment time is less than 1 minute, the folds formed in the curtain are liable to disappear, and if it exceeds 5 minutes, the productivity is reduced. In addition, the fibers tend to shrink and lose their shape. Then, when the above-mentioned wet heat treatment is completed, the upper mold is removed and the high-temperature curtain is cooled, but this cooling is performed after the supply of superheated steam to the perforated corrugated sheet is stopped. Inhale air in the opposite direction to the steam
A method of passing the air through a curtain and quenching it is preferable.

[0017]

In the first means, a curtain material is impregnated with a thermoplastic resin and a thermosetting resin, a corrugated fold is formed in a state where the thermosetting resin is not cured, and the thermosetting resin is treated with superheated steam to be thermoset. Since the resin is cured and cooled as it is to fix the thermoplastic resin, folds are formed on the curtain which are difficult to erase by washing or the like. Since the thermoplastic resin is mixed with the thermosetting resin to impregnate the curtain material, the formation of the folds becomes easy. Further, since the thermosetting resin and the thermoplastic resin are mixed and impregnated into the curtain material as described above, even when the content of the thermoplastic synthetic fiber in the curtain material is small,
Shirring is possible.

In the second means, an interlining made of a thermoplastic synthetic fiber having a basis weight of 30 to 400 g / m ² is attached to the folded portion of the curtain at the time of sewing in the first means. Particularly clear corrugated folds are formed on the plastic interlining, that is, the skirt portion, and the aesthetic appearance when the curtain is hung is further improved. Therefore, when the content of the thermoplastic synthetic fiber is 50% or less (including the case where the content is zero)
Also, good pleated curtains are obtained.

[0019]

【Example】

Example 1 Twenty count yarn consisting of rayon staple was used for warp and weft, and both warp density and weft density were 50 /.
The woven fabric having a plain weave structure of inch was refined, dyed, and dried according to a conventional method, and then impregnated with a diluted mixture of a thermosetting resin and a thermoplastic resin. Glyoxal resin (manufactured by Miki Riken Co., Ltd., trade name "Riken Resin R") as a thermosetting resin
G-85) as a thermoplastic resin, a polyether-based polyurethane (trade name “Evaphanol S-
5), and a composite metal salt as a curing catalyst (trade name “RIKEN FIXER MX-36” manufactured by Miki Riken Co., Ltd.)
A polyethylene resin emulsion (manufactured by Miki Riken Co., Ltd., trade name "Rikensol PZ") as a strength maintaining agent for preventing a decrease in bending wear, and a modified amino silicone (as a leveling agent for preventing wrinkling after shaping). Nikka Chemical Co., Ltd., product name "Nikka Silicone") and a formalin catcher made of amide resin as a remover of formalin generated from glyoxal resin (Miki Riken Co., Ltd., product name "Formalin Catcher C-40") Each was added. The mixing ratio is shown in Table 1 below.

Table 1 Glyoxal resin 20% Polyether polyurethane 5% Composite metal salt 4% Polyethylene resin emulsion 2% Modified amino silicone 2% Formalin catcher 2% Water 75%

The rayon fabric is immersed in the above-mentioned diluted mixture, squeezed with a mangle so that the content of the mixture becomes 80%, and dried with hot air at a temperature of 90 ° C. for 6 minutes. Water was removed while maintaining the state of the condensed compound. Next, the above-mentioned rayon fabric is applied to a curtain 10 having a width of 1.5 m and a length (length) of 2.0 m (FIG. 2).
See). At that time, the top portion and bottom portion of the curtain 10 and each folded in three forms the bag portion 11 and 12, the top portion of the basis weight of 50 g / m ² consisting of a polyester fiber woven fabric on the back side of the bag portion of the top portion The interlining 13 was sewn, and a hem interlining 14 made of a polyester fiber fabric and having a basis weight of 150 g / m ² was inserted into the inside of the bag 12 at the hem.

The curtain 10 tailored as described above was processed by the press machine 20 shown in FIG. In FIG. 1, 21 is an upper mold, and 25 is a lower mold. The upper die 21 is a box-shaped member fixed to a lifting frame (not shown) and raised and lowered, and a corrugated heating plate 22 made of a stainless steel plate is fixed to an opening at a lower surface thereof, and the surface thereof is wool. A large number of rod-shaped electric heaters 23 are arranged on the back side and covered with felt (not shown).
It can be set to any temperature in the range of 180 ° C. On the other hand, the lower mold 25 has a box shape fixed to a fixed base (not shown), and a corrugated sheet made of a stainless steel plate capable of meshing with the hot plate 22 of the upper mold 21 at an opening on an upper surface thereof. The perforated plate 26 is fixed, its surface is covered with wool felt (not shown), and a number of rod-shaped electric heaters 27 are arranged below. It can be set to any temperature in the range of 180 ° C. An inlet 25a is opened in the side plate of the lower die 25, and an exhaust port 25b is opened in the bottom plate. A boiler is connected to the inlet 25a through a steam pipe (not shown), and an exhaust port is set to the exhaust port 25b. Exhaust pumps are respectively connected via pipes (not shown).

The upper die 21 of the press machine 20 is opened, the above-mentioned rayon curtain 10 is set on the corrugated porous plate 26 of the lower die 25, and the upper die 21 is lowered to make the hot plate 22 and the lower die 2 lower.
5 and the electric heater 23 of the upper mold 21 and the electric heater 27 of the lower mold 25, respectively, are heated to 180 ° C., and then the lower mold 25 is introduced. Superheated steam at a temperature of 180 ° C. is introduced from the port 25a and jetted from the holes of the corrugated perforated plate 26, and the curtain 10 is treated with the superheated steam at a temperature of 180 ° C. for 5 minutes to remove the glyoxal resin in the curtain 10. Was cured.

Next, the supply of steam is stopped, the power supply to the upper and lower electric heaters 23 and 27 is stopped, and the exhaust pump connected to the exhaust port 25b is driven to start discharging steam in the lower mold 25. Thereafter, the upper mold 21 is raised to draw the outside air into the lower mold 25 from the holes of the corrugated perforated plate 26 following the discharge of the steam, and thereby cool the outer air to the curtain on the corrugated perforated plate 26. 10, the curtain 10 is passed through the felt and the holes of the corrugated perforated plate 26 in the
It was rapidly cooled below, and the curtain 10 was taken out. The obtained curtain 10 was formed into a corrugated plate as a whole, and when hooks were attached to the top portion and hung, straight folds were arranged at equal intervals in the length direction, and an elegant appearance was exhibited.

Example 2 A 150-denier polyester multifilament yarn is used as a warp and a 300-denier polyester multifilament yarn is used as a weft, and a woven fabric having a satin texture having a warp density of 238 yarns / inch and a weft yarn density of 77 yarns / inch is used. After weaving and smelting, setting, and drying the obtained greige fabric according to a conventional method, and further performing immersion, drying, setting, and soaping of a bromo-based flame retardant in order, the woven fabric was subjected to Example 1.
In the same manner as in the above, a diluted mixed solution containing a thermosetting resin and a thermoplastic resin was impregnated, dried, a curtain was prepared by sewing, and treated with superheated steam. However, when the drying temperature is 100
° C, the drying time is set to 5 minutes, and the temperatures of the electric heaters 23 and 27 of the press 20 and the superheated steam are set to 150 ° C.
And the processing time was set to 3 minutes. The obtained curtain had flame retardancy and had an elegant appearance in which straight folds were arranged at equal intervals in the length direction.

[0026]

According to the first aspect of the present invention, a curtain made of an arbitrary fiber is impregnated with a mixture of a thermoplastic resin and a thermosetting resin, and dried at such a low temperature that the thermosetting resin is not cured. Then, after sewing the desired shape of the curtain, the curtain is sandwiched between an upper mold and a lower mold of a sealable press, and the above-mentioned curtain is blown by discharging superheated steam from one mold for a predetermined time. Curing the thermosetting resin by steaming, and then removing the upper mold and cooling the curtain with air. , A beautiful corrugated fold can be formed even with rayon fabric, for example, and the obtained folds have excellent durability and are not easily lost by washing or the like.
In a normal pressure atmosphere, the curtain is sandwiched between the upper mold and the lower mold, treated with superheated steam, and after the treatment, the upper mold is removed and cooled with air. And no vacuum drying, saving equipment costs
Manufacturing costs are reduced and it is safe.

According to a second aspect of the present invention, in the first aspect of the invention, the basis weight of a thermoplastic synthetic fiber is formed of a thermoplastic synthetic fiber at a folded portion of a hem of a curtain at the time of sewing.
g / m ² interlining is applied, so that after the above-mentioned sewing, the corrugated plate-shaped folds are formed at the skirt portion by applying a shaping process with a pleating press, and the durability is good. The beauty of the curtain as a whole is further improved. Therefore, even if the content of the thermoplastic synthetic fiber in the curtain body is 50% or less, beautiful pleats can be easily formed.

According to a third aspect of the present invention, there is provided the curtain pleating method according to the first or second aspect, wherein the mixing ratio of the thermoplastic resin and the thermosetting resin in the mixture of the thermoplastic resin and the thermosetting resin is adjusted. 1/10 to 10/1
Therefore, a beautiful corrugated fold can be more easily formed on the curtain, the durability of the obtained fold is improved, and the fold becomes less likely to disappear.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the curtain fabric is impregnated with a mixture of a thermoplastic resin and a thermosetting resin (amount with solids).
Is limited to 1 to 20% by weight with respect to the weight of the fiber of the curtain, so that the formation of the folds is further facilitated and the durability of the folds is further improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a pleating press.

FIG. 2 is a longitudinal sectional view showing an example of a sewn curtain.

[Explanation of symbols]

 10: Curtain 13, 14: Interlining 20: Press for pleating 21: Upper die 22: Corrugated hot plate 23: Electric heater 25: Lower die 25a: Inlet 25b: Exhaust outlet 26: Corrugated perforated plate 27 : Electric heater

Claims (4)

(57) [Claims] 1. A curtain material made of an arbitrary fiber is impregnated with a mixture of a thermoplastic resin and a thermosetting resin, dried at a low temperature so that the thermosetting resin is not cured, and then sewn into a desired curtain shape. After that, the curtain is sandwiched between an upper mold and a lower mold of a sealable folding press, and the curtain is treated by steaming by blowing out superheated steam from one mold for a predetermined time to perform the heat curing. Curling a curable resin, then removing the upper mold, and cooling the curtain with air. 2. The method of claim 1, wherein the folded portion of the skirt of the curtain is made of thermoplastic synthetic fiber at a basis weight of 30 to 400 g / m.
^The method of attaching the curtain folds to attach the ^second interlining. 3. The curtain pleating method according to claim 1, wherein the mixture ratio of the thermoplastic resin and the thermosetting resin in the mixture of the thermoplastic resin and the thermosetting resin is 1/10 to 10/1. How to fold curtains. 4. The curtain pleating method according to claim 3, wherein the impregnation amount (solid content) of the mixture of the thermoplastic resin and the thermosetting resin with respect to the curtain material is 1 to the fiber weight of the curtain material. A method for pleating curtains that is ２０20% by weight.