JPH07252982A - Manufacturing, continuous molding device and continuous molding method of blind fiber slat - Google Patents

Abstract

PURPOSE:To promote productivity and quality by conveying a fiber base material containing a heat welding component through a belt, at the same time, heating the heat welding component to melt, and cooling the filter base material while bending it. CONSTITUTION:Knitted goods, textile goods and non-woven fabric applied and impregnated with a heat welding component containing heat welding fabric such as polyester, etc., or heat welding resin, etc., are cut off in a belt-shape. After that, a cut fiber base material X is inserted between a pair of up and down endless steel belts 1 and 2 and is conveyed. Then, under such a state, the base material X passes through a heating room 8 and, at the same time, when it is made to pass through between flat rollers 9, a hot wind is blown to heat. The base material X is made to pass through a cooling room 6 in which male and female rollers 3 with specific curvature are arranged. In addition, the base material X is cooled by blowing a cold wind against it during the passage, and it is molded in a state to curve the base material X. According to the constitution, it can be manufactured accurately with high efficiency and can increase strength, and deformation in extension, width variation, slat bending, etc., can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a blind fiber slat, a continuous molding apparatus, and a continuous molding method. More specifically, the curved surface shape of the blind fiber slat cross section can be continuously molded. A method for manufacturing a fiber slat for blinds, an apparatus and a method for continuously molding an object to be treated, which is made of a long nonwoven fabric or a knitted fabric containing at least a part of a thermoplastic resin, into a predetermined shape .

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 11, a blind fiber slat is a male mold 102 in which a fiber base material X cut into a predetermined width is provided in a curved shape.
It is sandwiched by a mold 101 composed of a female mold 103 and a female mold 103, and the atmosphere inside the mold 101 is heated from room temperature to 230 ° C., and then cooled to heat-fix the cross-sectional shape of the fiber base material X into a curved surface. Was manufactured.

However, in the conventional method for manufacturing a blind fiber slat, since it is a batch type as described above, the operation of setting the fiber base materials one by one in the mold, removing them, and setting them again Must be done
It took a lot of work. Further, since the fiber base material is curved by heat fixation, sufficient heating is required to provide shape retention, and the heating time is long.

Therefore, as a continuous molding method, a method is conceivable in which a heated object is passed between a pair of upper and lower convex rollers and a concave roller to cool the object to be molded into a predetermined shape.

However, according to this method, there is a problem that tension is applied to the object to be processed during traveling, the object to be processed is elongated, and a width change occurs. In addition, there is a problem that the eyes are bent.

[Object of the Invention] The present invention has been made in view of the above circumstances, and an object thereof is to provide a highly efficient blind capable of continuously forming a curved surface shape of a fiber slat for a blind. The productivity can be improved by continuously manufacturing the fiber slat for molding and molding.
An object of the present invention is to provide a continuous molding apparatus and a continuous molding method capable of preventing elongation, width change, and bending of the object to be processed without applying tension to the object during traveling.

[0007]

In order to achieve the above object, the invention according to claim 1 heats the fiber base material in the process of conveying the fiber base material containing a heat-sealing component by a belt. The gist is a method for producing a fiber slat for a blind, which is characterized in that the heat fusion component contained in the fiber base material is melted by heat and then the fiber base material is cooled while being curved.

The gist of the invention according to claim 2 is a method for producing a blind fiber slat whose fiber base material is a knitted fabric.

The third aspect of the invention has as its gist a method for producing a blind fiber slat in which the fiber base material is a woven fabric.

A fourth aspect of the invention has as its gist a method for producing a blind fiber slat in which the fiber base material is a nonwoven fabric.

A fifth aspect of the present invention has as its gist a method for producing a blind fiber slat, wherein the heat fusion component contained in the fiber base material is a heat fusion fiber.

According to a sixth aspect of the present invention, there is provided a method for producing a fiber slat for a brand, characterized in that the heat-sealing component contained in the fiber base material is a heat-sealing resin applied to the fiber base material. I made it a summary.

A seventh aspect of the present invention has as its gist a method for producing a fiber slat for a brand, characterized in that the fiber base material is passed between male and female rolls having a curved roller surface.

The invention of claim 8 has as its gist a method for producing a fiber slat for a blind, characterized in that the fiber base material is conveyed while being sandwiched between a pair of upper and lower endless belts.

The method for producing the blind fiber slats according to claims 1 to 8 will be described in more detail below.

In the method for producing the blind fiber slat (hereinafter referred to as slat production method), the fiber base material containing the heat-sealing component is conveyed by a belt, the fiber base material is heated, and then the fiber base material is heated. It is characterized by cooling while curving. The fibrous base material used in the slat production method of the present invention is a fibrous material such as a knitted fabric, a woven fabric, or a non-woven fabric containing a heat-sealing component, which is cut into a predetermined width and provided in a band shape. The heat-sealing component is a thermoplastic resin such as polyester, polyethylene, polypropylene, vinyl chloride, acrylic, styrene, or a synthetic fiber made of these resins, and these resins are used for the knitted fabric, woven fabric, non-woven fabric, etc. It can be contained in the fiber base material by coating and impregnating the fiber material, or by mixing synthetic fibers made of these resins with the fiber material such as knitted fabric, woven fabric and nonwoven fabric.

The fibrous material is applied with a flame retardant, a water repellent, an antistatic agent or the like prior to being subjected to the embossing process of the present invention, a flame retardant property, a water repellent property, an antistatic property such as preheat setting Further, processing for imparting functions such as heat resistance and moisture resistance can be performed. Of course, those processes may be performed after the molding.

In the process of transporting the fiber material thus constructed by the belt, it is heated and bent while being cooled. First, the belt-shaped fiber material is conveyed by a belt. The fiber material is conveyed by placing the fiber material on a belt that moves in a predetermined direction, or by moving the fiber material X between a pair of upper and lower endless belts 1 and 2 as shown in FIG. Can be fixed and transported. The belt to be used is not particularly limited, but as shown in FIG. 2 or FIG. 3, when the fiber material is curved along the roller, it has such a softness that a gap is not formed between the fiber material and the roller, and Even if it is bent, it easily cracks,
It is preferable that it is not easily damaged. The conveying speed is arbitrary, but if it is too fast, it causes problems such as insufficient heat fusion of the heat fusion components, cooling, insufficient molding, etc. Since the efficiency will be poor, it should be determined in relation to the heat fusion component used, the heating temperature, and the cooling temperature.

The heating can be carried out, for example, as shown in FIG. 1, by causing the endless belts 1 and 2 with the fiber material X sandwiched therebetween to flow into the heating chamber 8. The heating can also be performed by passing a fiber material between the heating rollers. The heating temperature is preferably the melting point of the heat-sealing component contained in the fiber material or a temperature higher than the melting point. By heating in this way, the heat-sealing component contained in the fiber material is heat-melted. If the heating temperature is too high, the melted heat-sealing component may flow out from the fiber base material, or the melted heat-sealing material component may move to the lower side of the fiber base material to form a film. May occur.

Next, the fiber base material is cooled while being curved. For example, as shown in FIGS. 1 and 2, it is arranged in a cooling chamber 6 and comprises a male roll 4 having a curved roller surface and a female roll 5 provided corresponding to the shape of the roller surface of the male roll 4. By passing the endless belts 1 and 2 in which the fiber base material X is sandwiched between the male and female rolls 3, the endless belts 1 and 2 are cooled and curved along the roll shape of the male and female rolls 3, The fibrous base material X sandwiched between the two will also be curved and cooled accordingly. Then, the fiber base material X is shaped in a curved state. still,
The one shown in the drawing is one in which the fiber material is curved and cooled in a state where the movement of the fiber material is fixed by sandwiching the fiber material between a pair of upper and lower endless belts, but not limited to this. By passing the belt on which the fiber material is placed in the cooling chamber, and by passing it between the male and female rolls arranged in the cooling chamber,
It is also possible for the fibrous material to be curved and cooled.

When the curvature (R) is relatively small,
As shown in FIG. 3, the endless belt 1 sandwiching the fiber base material X,
2 is provided with a roller surface on a curved surface and is passed while being pulled by a roll 7 arranged above or below the conveyance direction of the endless belts 1 and 2, whereby the fiber base material X is passed through. It is also possible to bend the fiber base material X in a curved state by bending it along the roll shape of the roll 7 with a tensile force of 2.

For cooling the fiber base material, cold air is blown or
In addition to the method of bending the fiber base material in the cooling chamber placed in a low temperature atmosphere, it can be performed by using the male and female rolls 3 or the rolls 7 that bend the fiber base material themselves as cooling rolls.

The fiber base material used in the method of the present invention may be cut into a predetermined length or may be continuous. In this case, a process in which the fiber base material is wound on a roll is processed, and then cut into a predetermined length, which makes it easy to insert the fiber base material between the belts and further improve productivity. You can

A continuous molding apparatus according to a ninth aspect is a continuous molding apparatus for continuously molding an object to be treated, which is made of a long-sized non-woven fabric or knitted fabric containing at least part of a thermoplastic resin, into a predetermined shape. A heating zone for making the resin in a plastic state, a cooling zone arranged behind the heating zone, and a conveying means for sequentially conveying the object to be treated from the heating zone to the cooling zone, The cooling zone is provided with a pair of upper and lower molding rollers arranged with a gap of a predetermined size, and the conveying means includes at least two upper and lower metal rollers arranged to sandwich and convey the object to be processed. A belt member is provided, and the object to be processed is sandwiched between the metal belt members and is passed between the molding rollers to be molded into a predetermined shape.

According to a tenth aspect of the present invention, in the continuous molding method, an object to be treated which is made of a long non-woven fabric or knitted fabric containing at least a part of a thermoplastic resin is cooled through a heating zone which makes the resin in a plastic state. A continuous molding method of continuously traveling in a zone and molding in a predetermined shape in the cooling zone, wherein the object to be treated is sandwiched between at least two upper and lower metal belt members and cooled from the heating zone. The molding method is characterized in that the molding material is continuously run in the zone and is passed between a pair of upper and lower molding rollers provided in the cooling zone.

Incidentally, the meaning of the above-mentioned "object to be treated containing at least a part of the thermoplastic resin" may be that the object to be treated consists of 100% thermoplastic resin fibers, or It means that the thermoplastic resin may be contained in a part, and the above-mentioned "case where the thermoplastic resin is contained in part" means that the thermoplastic resin fiber is mixed with other fibers (for example, cotton, hemp, etc.). ) May be mixed and knitted or entangled together, or to a processed object manufactured using fibers other than thermoplastic resin fibers, a thermoplastic resin is coated as a post-process,
This means that it may be an impregnated object.

When the thermoplastic resin is partially contained, the content of the resin varies depending on the resin to be used, the shape to be molded, etc., but cannot be generally stated.
Approximately 10% by weight or more is preferable,
It is preferably 20% by weight or more, and more preferably 30% by weight or more. If it is less than 10% by weight, it may not be molded into a desired shape or may lose its shape. In the inventions of claims 9 and 10, the object to be processed travels in the heating zone in a state of being sandwiched by at least two upper and lower metal belt members.
In this heating zone, the thermoplastic resin in the object to be treated becomes in a plastic state, and while maintaining this state, it goes to the cooling zone.

In the cooling zone, it passes between a pair of upper and lower molding rollers and is gradually cooled, whereby it is continuously molded into a predetermined shape.

The productivity is improved by continuously molding the object to be processed, and as described above, the object to be processed is molded while running while being sandwiched between at least two upper and lower metal belt members. Therefore, tension is not applied to the object to be processed, and it is possible to prevent the object to be processed from being stretched, changed in width, and bent.

The continuous molding apparatus according to the eleventh aspect is a continuous molding apparatus for continuously molding an object to be treated, which is made of a long nonwoven fabric or a knitted fabric containing at least a part of a thermoplastic resin, into a predetermined shape. A heating zone for making the resin in a plastic state, a cooling zone arranged behind the heating zone, and a conveying means for sequentially conveying the object to be treated from the heating zone to the cooling zone, The cooling zone is composed of a slow cooling unit for crystallizing the plasticized resin and a main cooling unit for cooling the crystallized resin, and the cooling zone has a gap of a predetermined size. Is provided with a pair of upper and lower molding rollers,
The carrying means is composed of at least two upper and lower metal belt members that are arranged to sandwich and carry the object to be processed, and the object to be processed is sandwiched between the metal belt members to form the molding roller. It is made to pass through between them to be molded into a predetermined shape.

According to a twelfth aspect of the continuous molding method, an object to be treated which is made of a long non-woven fabric or knitted fabric containing at least a part of a thermoplastic resin is continuously run to a cooling zone through a heating zone. A continuous molding method in which the resin is molded into a predetermined shape in the cooling zone, wherein the object to be treated is sandwiched between at least two upper and lower metal belt members, and the resin is plasticized from a heating zone in which the resin is in a plastic state. The continuous running up to the cooling zone constituted by the slow cooling part for crystallizing the resin in the state and the main cooling part for cooling the crystallized resin, and the upper and lower parts provided in the cooling zone. It is a molding method characterized by passing between a pair of molding rollers.

The wording "the article to be treated containing at least a part of the thermoplastic resin" means that the article to be treated may consist of 100% thermoplastic resin fibers. Alternatively, it means that a part may contain a thermoplastic resin, and the above-mentioned “case where a part contains a thermoplastic resin” means that a thermoplastic resin fiber is combined with another fiber (for example, cotton, hemp). Etc.) may be mixed and knitted or entangled together, or the processed product manufactured using fibers other than thermoplastic resin fibers may be coated and impregnated with a thermoplastic resin as a post-process. It means that it may be a processed object.

When the thermoplastic resin is partially contained, the content of the resin varies depending on the resin used, the shape to be molded, and the like, but it cannot be generally stated.
Approximately 10% by weight or more is preferable,
It is preferably 20% by weight or more, and more preferably 30% by weight or more. If it is less than 10% by weight, it may not be molded into a desired shape or may lose its shape. In the inventions of claims 11 and 12, the object to be processed travels in the heating zone in a state of being sandwiched between at least two upper and lower metal belt members. In this heating zone, the thermoplastic resin in the object to be treated becomes in a plastic state, and while maintaining this state, it goes to the cooling zone.

The cooling zone comprises the slow cooling section and the main cooling section as described above. The object to be treated in which the resin contained therein is in a plastic state first passes through the slow cooling section described above, and then passes through the main cooling section. While passing through the slow cooling section, the plasticized resin is crystallized and cooled in the main cooling section. At the same time, the object to be processed passes between a pair of upper and lower molding rollers provided in the cooling zone while passing through each of the slow cooling section and the main cooling section, and is continuously molded into a predetermined shape.

The productivity is improved by continuously molding the object to be processed, and as described above, the object to be processed is molded while running while being sandwiched between at least two upper and lower metal belt members. Therefore, tension is not applied to the object to be processed, and it is possible to prevent the object to be processed from being stretched, changed in width, and bent.

The object to be processed can be annealed by passing through the preliminary cooling step once instead of cooling the object at once, and the weather resistance of the finally obtained molded product can be improved. The property is improved. Therefore, the temperature in the slow cooling section and the time (travel speed of the object to be processed) passing through the slow cooling section should be set appropriately (that is, sufficient crystallization is required) depending on the type of resin, the shape and thickness of the molded product, etc. Need to be set)

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

Example 1 Polyester fiber having a melting point of 200 to 210 ° C. (Neuver 3
0/2, manufactured by Kanebo Co., Ltd.) with a basis weight of 358 g / m ² ,
Fine line with 224g / m ^2, cotton basis weight of 134g / m ^2, fabric thickness 1.25mm of Knitting (flex knit, Nishikawa Rose Co., Ltd.), the pre-heat setting for one minute at 160 ℃,
High-pressure jet dyeing with dyes containing flameproofing agents, 1 at 140 ° C
Minute drying treatment, water repellent finish, soil release finish (SR
Processing), after pre-processing such as heat setting for 1 minute at 210 ° C., this is cut into a strip having a width of 25 mm.

Next, the knitted fabric (fiber base material X) which has been subjected to the above-described undercut and cut into a predetermined width is subjected to a patterning process according to the procedure shown in FIG. First, the knitted fabric is inserted between a pair of upper and lower endless steel belts (belt thickness 0.08 mm) 1 and 2 and is nipped and conveyed. A heating chamber 19 is provided in the belt feeding direction, and four flat rollers 9 are arranged in the heating chamber 19 at intervals in the belt conveyance path. When the knitted fabric is passed through the heating chamber 8 while being sandwiched between the pair of steel belts 1 and 2 and is passed between the flat rollers 9 (passing time of the heating chamber is 15 seconds), hot air of 230 ° C. To heat the knitted fabric and the belts 1 and 2 in a flat state.

Thereafter, the belts 1 and 2 sandwiching the knitted fabric are passed through the male and female rolls 3 including the male roll 4 and the female roll 5 having the curvature 20R into the cooling chamber 6 arranged at intervals of 4 ( The passage time in the cooling chamber 6 is 15 seconds). And 15
By passing between the male and female rolls 3 while the cold air of ℃ is blowing, the knitted fabric and the belts 1 and 2 are cooled while being curved along the roll shape. As a result, the knitted fabric was shaped in a curved state.

Example 2 Polyester fiber having a melting point of 200 to 210 ° C. (Neuver 2
0/1, manufactured by Kanebo Co., Ltd.) with a basis weight of 342 g / m ² ,
For a woven fabric woven into a plain weave with a vertical density of 34 / inch, a horizontal density of 28 / inch, and a fabric thickness of 0.75 mm,
The same process as in Example 1 was performed and cut into a width of 25 mm.
Further, a patterning process was performed.

The curvatures (R) of the slats produced by the above processing were 17.0 (Example 1) and 22.1 (Example 2), respectively. Further, strength properties of the slats of Example 1 and Example 2 were measured, and the following [Table 1]
It was shown to.

[0043]

[Table 1]

From [Table 1], the slats of Examples 1 and 2 are warped, twisted, bent, bent, and broken when compared with the standard values of conventionally used aluminum blind slats. It is understood that all the strengths are within the standard value range and have a certain strength physical property as a slat. In addition, the slats of Examples 1 and 2 can reduce the echo of the sound, do not hurt the hand during handling, do not cause airflow obstruction at the time of blocking, generate low contact noise at the time of opening / closing operation, and cause radio interference. It has characteristics such as difficulty.

Third Embodiment Another embodiment will be described below with reference to the drawings. In addition, in the present embodiment, the device for continuously molding the slats for blinds is described, but the invention is not limited to this, and the spine (spine) of books, albums, files, etc., or a part of ornaments and interior materials is continuously molded. Can also be used for

FIG. 4 shows an overall side view of the continuous molding apparatus (A). On the right side of this figure, a tape-shaped object to be processed (T) is wound around a reel (10). The object to be treated (T) is one in which thermoplastic resin fibers such as polypropylene fibers and polyethylene fibers are mixed together and woven.

A heating zone (12) is provided at the rear (left side in FIG. 4) of the reel (10) around which the object (T) is wound.
The cooling zones (14) are arranged in sequence.

A front upper roller (16) is arranged in front of the heating zone (12), and a front lower roller (18) is arranged immediately below this roller (16). In the rear of the cooling zone (14), the front upper roller (1
The rear upper roller (20) forming a pair with 6) is arranged,
Immediately below the roller (20), there is arranged a rear lower roller (22) forming a pair with the front lower roller (18).

The upper conveyance means (24) is wound around the front and rear upper rollers (16) (20), and the lower conveyance means (26) is wound around the front and rear lower rollers (18) (22). ing. The above-mentioned upper transfer means (24) and lower transfer means (2
All 6) consist of stainless steel belts.

The front upper roller (16) and the front lower roller (18), and the rear upper roller (20) and the rear lower roller (22) rotate in mutually opposite directions (see arrow in FIG. 4). . This allows the front roller (16) (1
The two transfer means (24) and (26) that have passed through 8) travel toward the rear while being in contact with each other, and the heating zone (1
It goes through 2) to the cooling zone (14). Then, after exiting the cooling zone (14) and passing through the rear rollers (20) and (22), they travel forward while being separated from each other.

The object (T) unwound from the reel (10) is sandwiched between the upper transfer means (24) and the lower transfer means (26), and both transfer means (24).
(26) travels toward the inlet (12a) of the heating zone (12) as each travels (see FIG. 5), and with this travel, the object to be treated (T) is sequentially transferred from the reel (10). It is rolled out. In the heating zone (12), pressing rollers (28) are provided at predetermined intervals so as to sandwich the traveling path of the object to be treated (T). This allows the heating zone (1
In 2), it is possible to more effectively prevent the upper and lower transfer means (24) (26) and the object (T) from being separated from each other.

As described above, the object to be treated (T) runs in the heating zone (12) while being sandwiched between the upper and lower conveying means (24) and (26), and within the heating zone (12). Be heated. In the heating zone (12), hot air blowing ducts (30) (30) for blowing hot air (for example, about 200 ° C.) to the upper surface and the lower surface of the traveling processing object (T) are provided. It is provided above and below the traveling path of (T).

In this heating zone (12), the thermoplastic resin contained in the object to be treated (T) is in a plastic state, and while maintaining this state, the upper and lower conveying means (24) (26).
Heading towards the cooling zone (14) with it being sandwiched between.

In the cooling zone (14), as shown in FIGS. 6 to 8, the object (T) sandwiched between the upper and lower conveying means (24) (26) can travel only slightly. Gap (K)
And a pair of upper and lower molding rollers (32) arranged so as to keep the space.

The above-mentioned molding roller (32) comprises an upper molding roller (34) and a lower molding roller (36). The upper molding roller (34) has a cylindrical shape and gradually becomes closer to the central portion in the width direction. It has a small diameter.
The lower molding roller (36) is the upper molding roller (34).
It has a columnar shape having a peripheral surface corresponding to the curved peripheral surface in, and has an egg shape (rugby ball shape) whose diameter gradually increases toward the center portion in the width direction.

The upper molding roller (34) and / or the lower molding roller (36) may be positively rotated by a driving means such as a motor (in this case, the conveying means (24)).
(26) and the peripheral speed of the molding roller (32 are kept the same), and a free roller type that rotates following the upper and lower conveying means (24) (26) .

A large number of the above-mentioned pair of upper and lower molding rollers (32) are arranged in the front-rear direction in the cooling zone (14) to form a molding roller row (40). It should be noted that the forming roller row (40) starts from immediately before the outlet (12b) of the heating zone (12) and ends at the outlet (12) of the heating zone (12).
b) and the inlet (14a) of the cooling zone (14) to the outlet (14b) of the cooling zone (14) (see FIG. 4).

A cold air blowing duct (42) is provided above and below the forming roller row (40). As a result, the object to be processed (T) traveling backward while being sandwiched between the upper and lower transfer means (24) (26) is cooled while receiving cool air (eg, 20 ° C.) from the upper and lower surfaces. While passing through the molding rollers (32), the shape gradually becomes a predetermined shape (in the case of this embodiment, an arc cross section).
Is molded into.

It is preferable that the distance between one molding roller (32) and another adjacent molding roller (32) be as small as possible. That is, by reducing the gap, the space between the molding rollers (32) (molding roller (32)
The conveying means (24) (26) can hold an arc shape even in a place where there is no such, that is, can hold a shape corresponding to the molding roller.
Further, by disposing a large number of molding rollers, the processing speed (traveling speed of the conveying means) can be increased, and the processing time can be shortened.

The object to be treated (T) molded into a predetermined shape is
Still further, it is sent out from the outlet (14b) of the cooling zone (14) while being sandwiched by the upper and lower conveying means (24) (26).
After that, as described above, the upper roller (20) and the lower roller (22) on the rear side cause the upper and lower conveying means (24) (26).
Respectively, and the object to be processed (T) is separated from the conveying means (24) and (26) and continuously travels backward. Then, as shown in FIG. 9, it is cut into a predetermined size by a cutter (44) that intermittently moves in the vertical direction.

According to the apparatus (A) described above, the object (T) to be processed can be continuously molded, so that the productivity is drastically improved, and as described above, the object (T) is processed. )
Is molded by running while being sandwiched between two upper and lower stainless steel belts, tension is not applied to the object to be processed (T), and elongation, width change and bending of the object to be processed (T) Can be prevented.

In this embodiment, a molded product having an arcuate longitudinal section (R shape) was manufactured, but the shape is not limited to this, and the shape of the molding roller (32) is changed so that the sectional shape is (wave) -shaped, It is also possible to manufacture a U-shaped, V-shaped, W-shaped, N-shaped, etc. molded product.

Further, as the heating method in the heating zone (12), a hot air jet method was adopted, but the method is not limited to this and an infrared radiation heating method may be used.

As the cooling method in the cooling zone (14), the cold air blowing method was adopted, but the cooling water blowing method is not limited to this. Alternatively, the object to be treated (T) can be cooled by configuring at least one of the pair of upper and lower molding rolls (32) itself as a cooling roller.

Embodiment 4 FIG. 10 shows an overall side view of the continuous molding apparatus (A '). On the right side of this figure, a tape-shaped object to be processed (T) is wound around a reel (10). The object to be treated (T) is one in which thermoplastic resin fibers such as polypropylene fibers and polyethylene fibers are mixed together and woven.

At the rear (left side in FIG. 10) of the reel (10) around which the object (T) is wound, the heating zone (1
2) The cooling zone (14) is arranged in sequence.

A front upper roller (16) is arranged in front of the heating zone (12), and a front lower roller (18) is arranged immediately below this roller (16). In the rear of the cooling zone (14), the front upper roller (1
The rear upper roller (20) forming a pair with 6) is arranged,
Immediately below the roller (20), there is arranged a rear lower roller (22) forming a pair with the front lower roller (18).

The upper conveying means (24) is wound around the front and rear upper rollers (16) (20), and the lower conveying means (26) is wound around the front and rear lower rollers (18) (22). ing. The above-mentioned upper transfer means (24) and lower transfer means (2
All 6) consist of stainless steel belts.

The front upper roller (16) and the front lower roller (18), and the rear upper roller (20) and the rear lower roller (22) rotate in mutually opposite directions (see arrow in FIG. 10). . This allows the front roller (16)
The two transporting means (24) and (26) that have passed through (18) travel backward while contacting each other, and reach the cooling zone (14) via the heating zone (12). Then, after exiting the cooling zone (14) and passing through the rear rollers (20) and (22), they travel forward while being separated from each other. Object (T) unwound from the reel (10) described above
Is sandwiched between the upper transfer means (24) and the lower transfer means (26), and the inlet (12a) of the heating zone (12) as the both transfer means (24) (26) travel. (See FIG. 5), and the object to be treated (T) is successively unwound from the reel (10) along with this traveling.
In the heating zone (12), pressing rollers (28) are provided at predetermined intervals so as to sandwich the traveling path of the object to be treated (T). This makes it possible to more effectively prevent the upper and lower conveying means (24) and (26) and the object to be treated (T) from being separated from each other in the heating zone (12).

As described above, the object to be treated (T) travels in the heating zone (12) while being sandwiched between the upper and lower conveying means (24) and (26), and within the heating zone (12). Be heated. The heating zone (12) is provided with hot air blowing ducts (30) (30) for blowing hot air (for example, about 200 ° C. air) onto the upper surface and the lower surface of the traveling object (T). It is provided above and below the traveling path of the object (T).

In this heating zone (12), the thermoplastic resin contained in the object to be treated (T) is in a plastic state, and while maintaining this state, the upper and lower conveying means (24) (26).
Heading towards the cooling zone (14) with it being sandwiched between.

The cooling zone (14) is composed of a slow cooling section (15) constituting the front side and a main cooling section (17) constituting the rear side.

In the cooling zone (14), there is a small gap (K) in which the object (T) sandwiched between the upper and lower conveying means (24) (26) can travel. A pair of upper and lower molding rollers (32) are provided (see FIGS. 6 to 8).

The above-mentioned molding roller (32) is composed of an upper molding roller (34) and a lower molding roller (36) each having a symmetrical shape, and the upper molding roller (34) has a cylindrical shape and a width. The diameter is gradually reduced toward the center of the direction. Also, lower molding roller (36)
Is a columnar shape having a peripheral surface corresponding to the curved peripheral surface of the upper molding roller (34), and has an egg-shaped (rugby ball type) shape whose diameter gradually increases toward the center portion in the width direction.

The upper molding roller (34) and / or the lower molding roller (36) may be positively rotated by a driving means such as a motor (in this case, the conveying means (24)).
(26) and the peripheral speed of the molding roller (32 are kept the same), and a free roller type that rotates following the upper and lower conveying means (24) (26) .

A large number of the pair of upper and lower molding rollers (32) are arranged in the cooling zone (14) in the front-rear direction, whereby a molding roller row (40) is formed. In addition,
This forming roller row (40) is provided with the above-mentioned heating zone (12).
Immediately before the exit (12b) of the heating zone (12)
b) and the inlet (14a) of the cooling zone (14) to the outlet (14b) of the cooling zone (14) (FIG. 10).
reference).

Forming roller row (4) in the slow cooling section (15)
A plurality of pre-cooling ducts (41) (five in each of the upper and lower sides in this embodiment) are provided above and below (0), and pre-cooling air (for example, 5) is provided from the ducts (41). , Wind of 150 to 180 ° C. is jetted to both front and back surfaces of the object to be treated (T) (the time required for passing through the slow cooling section (15) of the object to be treated is, for example, 20 to 9
0 seconds).

Further, cold air blowing ducts (42) are provided above and below the forming roller row (40) in the main cooling section (17), and cold air (for example, about A wind of 20 ° C.) is sprayed on both the front and back surfaces of the object to be treated.

As a result, the upper and lower conveying means (24) (26)
The object to be processed (T) running backward in a state of being sandwiched between is passed between the molding rollers (32) while being gradually cooled after passing through the heating zone (12), and is gradually cooled to a predetermined shape (the present embodiment). In the case of the example, it is molded into a circular arc cross section). The resin in the object to be treated that has become plastic in the heating zone is not cooled at once but is temporarily cooled in the slow cooling section (15) as described above. At this time,
That is, during pre-cooling, the object to be processed (T) is annealed, and the resin in the object to be processed (T) is crystallized. It is speculated that this is the reason why a molded product having excellent weather resistance is finally obtained. Therefore, the blowout temperature from the pre-cooling duct (41) in the gradual cooling part (15) and the time (travel speed of the object to be processed) passing through the gradual cooling part (15) are determined by the type of resin and the shape of the molded product. It is necessary to set it appropriately (that is, to such a degree that crystallization is sufficiently advanced) depending on the thickness, thickness, and the like.

It is preferable that the distance between one molding roller (32) and another adjacent molding roller (32) is as small as possible. That is, by reducing the distance, the conveying means (24) (26) can maintain an arc shape even between the molding rollers (32) (where the molding roller (32) does not exist).
That is, the shape according to the molding roller can be maintained. Also,
By disposing a large number of molding rollers, the processing speed (traveling speed of the conveying means) can be increased, and the processing time can be shortened.

The object (T) molded into a predetermined shape is
Still further, it is sent out from the outlet (14b) of the cooling zone (14) while being sandwiched by the upper and lower conveying means (24) (26).
After that, as described above, the upper roller (20) and the lower roller (22) on the rear side cause the upper and lower conveying means (24) (26).
Respectively, and the object to be processed (T) is separated from the conveying means (24) and (26) and continuously travels backward. Then, it is cut into a predetermined size by the cutter (44) which intermittently moves in the vertical direction (see FIG. 9).

According to the apparatus (A ') of the present invention, the object to be treated (T) can be continuously molded, so that the productivity is remarkably improved, and the object to be treated as described above. (T)
Is molded by running while being sandwiched between two upper and lower stainless steel belts, tension is not applied to the object to be processed (T), and elongation, width change and bending of the object to be processed (T) Can be prevented.

In this embodiment, a molded product having an arcuate longitudinal section (R shape) was manufactured. However, the shape is not limited to this, and the shape of the molding roller (32) is changed so that the cross-sectional shape is (wave) -shaped, It is also possible to manufacture a U-shaped, V-shaped, W-shaped, N-shaped, etc. molded product.

Further, as the heating method in the heating zone (12), a hot air jet method is adopted, but the method is not limited to this and an infrared radiation heating method may be used.

As a cooling method in the cooling zone (14), a cold air blowing method was adopted, but the cooling water blowing method is not limited to this. Alternatively, the object to be treated (T) can be cooled by configuring at least one of the pair of upper and lower molding rolls (32) itself as a cooling roller.

[0086]

According to the present invention, the above-mentioned structure is provided.
The manufacturing method of the slat described is, in the process of conveying a fiber material containing a heat-sealing component by a belt, heating the fiber base material to heat-melt the heat-sealing component contained in the fiber base material, and then the fiber base. Since it is designed to cool while bending the material, it is possible to continuously mold the curved shape of the slat cross section,
It is possible to manufacture highly efficient blind fiber slats.

The slat manufacturing method according to claim 2 uses a knitted fabric as the fiber base material, and in this case, the strength and physical properties such as warpage, twisting and bending are superior to those of the conventional aluminum slats. You can get slats.

The slat manufacturing method according to claim 3 uses a woven fabric as a fiber base material, and in this case, the slat is superior in strength and physical properties such as warping, twisting and bending as compared with conventional aluminum slats. You can get slats.

The slat manufacturing method according to claim 4 uses a non-woven fabric as the fiber base material, and in this case, the slat is superior in strength and physical properties such as warping, twisting and bending as compared with the conventional aluminum slats. You can get slats.

According to the slat manufacturing method of the present invention, since the heat-fusible fiber is used as the heat-sealing component contained in the fiber base material, the heat-bonding to the fiber base material is performed in the manufacturing process of the fiber base material. The components can be included and do not require a separate step to include the heat fusion components.

In the slat manufacturing method according to the sixth aspect, since the fiber base material coated with the heat fusible resin and containing the heat fusible component is used, the heat fusible component is included in the fiber base material. Are uniformly dispersed, and a slat having a uniform strength physical property can be obtained.

According to the slat manufacturing method of the present invention, the fiber base material is curved by passing the fiber base material between the fiber rolls having the roller surface provided in the curved surface shape. By changing the shape, it is possible to mold a large or small curvature R freely and accurately.

According to the slat manufacturing method of the present invention, since the fiber material is conveyed while being sandwiched between a pair of upper and lower endless belts and the movement thereof is fixed, the position of the fiber material does not shift during the conveyance, and the roll material The fiber material can be accurately adhered to a curved surface without causing a gap, and the fiber material can be accurately curved.

According to the ninth and tenth aspects of the present invention, since the object to be treated can be continuously molded, the productivity is dramatically improved.

Further, since the object to be processed is run and molded while being sandwiched by at least two metal belt members above and below, tension is not applied to the object to be processed, and the elongation and width of the object to be processed are increased. It is possible to prevent changes and bending.

According to the eleventh and twelfth aspects of the invention,
Since the object to be treated can be continuously molded, the productivity is dramatically improved.

Further, since the object to be processed is run and molded while being sandwiched by at least two upper and lower metal belt members, no tension is applied to the object to be processed, and the elongation and width of the object to be processed are increased. It is possible to prevent changes and bending.

Further, by preliminarily cooling the object to be processed, rather than cooling it at once, it is possible to give an annealing effect to the object to be processed and to promote crystallization of the resin, and finally. The physical properties of the obtained molded product, especially the weather resistance, are improved.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of an apparatus used in the slat manufacturing method of the present invention.

FIG. 2 is a front view showing male and female rolls for bending an endless belt.

FIG. 3 is a perspective view showing a state in which an endless belt is pulled by a roll provided in a curved shape.

FIG. 4 is an overall side view of a continuous molding device showing a third embodiment.

FIG. 5 is a partially enlarged side view of the previous figure.

FIG. 6 is a front view of a pair of upper and lower molding rollers.

FIG. 7 is a schematic explanatory view showing a state of being molded by a molding roller.

FIG. 8 is a schematic explanatory view showing a state in which an object to be processed sandwiched by upper and lower conveying means passes between molding rollers.

FIG. 9 is a perspective view showing a state where the molded object to be processed is cut at predetermined intervals.

FIG. 10 is an overall side view of a continuous molding device showing a fourth embodiment.

FIG. 11 is a schematic view showing a mold used in a conventional slat manufacturing method.

[Explanation of symbols]

 A, A '... Continuous molding device T ... Object to be treated X ... Fiber substrate 1, 2 ... Endless belt 3 ... Male / female roll 4 ... Male roll 5 ... Female roll 12 ... Heating zone 12a ...... (Heating zone) inlet 12b ...... (Heating zone) outlet 14 …… Cooling zone 14a …… (Cooling zone) inlet 14b …… (Cooling zone) outlet 15 …… Slow cooling unit 17 …… Book Cooling unit 24 ...... Upper conveying means 26 ...... Lower conveying means 30 ...... Hot air blowing duct 34 ...... Upper molding roller 36 ...... Lower molding roller 40 ...... Molding roller row 41 ...... Preliminary cooling duct 42 ...... Cold air blowing duct

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Yamamoto 1 of 101 Kawai, Kawai-machi, Kita-Katsuragi-gun, Nara 1 Hirano Techseed Co., Ltd. (72) Inventor Tatsuji Oka 1 share of 101 Kawai-cho, Kita-Kujo-gun, Nara Company Hirano Techseed (72) Inventor Norio Morii 1 of 101 Kawai, Kawai-machi, Kita Katsuragi-gun, Nara 1 Hirano Techseed Co., Ltd. (72) Inventor Masanobu Muraki 1 of 101 Kawai-cho, Kita-Kujo-gun, Nara 1 In Hiranotexed Co., Ltd.

Claims (12)

[Claims] 1. In the process of transporting a fiber base material containing a heat-sealing component by a belt, the fiber base material is heated to heat-melt the heat-sealing component contained in the fiber base material, and then the fiber base material. A method for manufacturing a fiber slat for a blind, which comprises cooling the material while curving the material. 2. The method according to claim 1, wherein the fiber base material is a knitted fabric. 3. The method according to claim 1, wherein the fiber base material is a woven fabric. 4. The method according to claim 1, wherein the fiber base material is a non-woven fabric. 5. The method according to claim 1, wherein the heat fusion component contained in the fiber base material is a heat fusion fiber. 6. The method according to claim 1, wherein the heat-sealing component contained in the fiber base material is a heat-meltable resin applied to the fiber base material. 7. The method according to claim 1, wherein the fiber base material is passed between male and female rolls having a roller surface having a curved surface shape. 8. The manufacturing method according to claim 1, wherein the fiber base material is conveyed while being sandwiched between a pair of upper and lower endless belts. 9. A continuous molding device for continuously molding an object to be treated, which is made of a long-sized nonwoven fabric or knitted fabric containing at least a part of a thermoplastic resin, into a predetermined shape. A heating zone to be brought into a state, a cooling zone arranged behind the heating zone, and a conveying means for sequentially conveying the object to be processed from the heating zone to the cooling zone, and the cooling zone has a predetermined size. A pair of upper and lower molding rollers arranged with a gap between the upper and lower rollers are provided, and the conveying means is composed of at least two upper and lower metal belt members that are arranged to sandwich and convey the object to be processed, A continuous molding apparatus, wherein the object to be processed is sandwiched between the metal belt members and is passed between the molding rollers to be molded into a predetermined shape. 10. An object to be treated made of a long nonwoven fabric or knitted woven fabric containing at least a part of a thermoplastic resin is continuously run to a cooling zone through a heating zone for making the resin in a plastic state, A continuous molding method of molding into a predetermined shape in the cooling zone, wherein the object to be processed is continuously run from the heating zone to the cooling zone while being sandwiched between at least two upper and lower metal belt members. A continuous molding method characterized in that it is passed between a pair of upper and lower molding rollers provided in the cooling zone. 11. A continuous molding device for continuously molding an object to be treated, which is made of a long-sized non-woven fabric or knitted fabric containing at least part of a thermoplastic resin, into a predetermined shape. A heating zone to be in a state, a cooling zone disposed behind the heating zone, and a transporting unit that sequentially transports the object to be processed from the heating zone to the cooling zone, wherein the cooling zone is in a plastic state The gradual cooling part for crystallizing the resin thus formed, and the main cooling part for cooling the crystallized resin, and in the cooling zone,
A pair of upper and lower forming rollers arranged with a gap of a predetermined size is provided, and the conveying means is composed of at least two upper and lower metal belt members arranged to convey the object to be processed. The continuous molding apparatus is characterized in that the object to be processed is sandwiched between the metal belt members and is passed between the molding rollers to be molded into a predetermined shape. 12. An object to be treated, which is made of a long nonwoven fabric or knitted fabric containing at least a part of a thermoplastic resin, is continuously run through a heating zone to a cooling zone, and a predetermined shape is formed in the cooling zone. In the continuous molding method, the resin to be plasticized is crystallized from a heating zone that puts the resin in a plastic state in a state where the object to be treated is sandwiched between at least two metal belt members above and below. And a continuous cooling zone constituted by a main cooling section for cooling the crystallized resin and passing between a pair of upper and lower molding rollers provided in the cooling zone. A continuous molding method characterized by: