JPS6192691A - Method and apparatus for premolding cushion material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

OBJECTS OF THE INVENTION (Field of Technology) The present invention relates to a method for preforming a cushion material and its +A position. Specifically, the present invention relates to a bella 1 made of a synthetic fiber filament aggregate having three-dimensional curls, a method for preforming cushioning materials used for seats, etc., and an apparatus therefor. (Prior art) A filament with three-dimensional curl is cut into a predetermined size.
- The cushioning material is made of cotton, compressed into a predetermined shape while opening the cotton, and bonded with an adhesive at the points of contact between the filaments.The cushioning material has high rebound properties, is breathable, and has excellent cushioning properties. The present inventor has previously discovered that the water is soaked in water (Japanese Patent Application Laid-Open No. 152-152-573). In addition, the cushioning material has a configuration in which each contact point of the filament soybean of the cotton-made synthetic fiber filament aggregate having three-dimensional curls is bonded with an adhesive. The curled filaments of various shapes, which are formed by stretching and deforming each direction, are formed in a direction in which the load strength is to be increased, and The present inventor has also previously discovered that a filament lock material in which the mating portions are distributed in accordance with the required load strength has an even more significant effect (Japanese Patent Application Laid-Open No. 138-662-1982). These cushioning materials are produced by H-shrinking cotton-made three-dimensional curl filaments using an endless belt and/or rollers or their respective means to form a filament aggregate block having a predetermined bulk density. The filament is formed on an endless belt running horizontally, with or without needling or rubbing using a button with a barb to achieve a predetermined t1 density. It is manufactured by spraying an adhesive liquid onto the body from above, or by immersing a filament molded body in an adhesive liquid, pulling it out of the liquid, and heating and drying it on an endless belt running in a nearly horizontal direction. . However, in such a method J5, the bulk density of the filament aggregate block depends on the ff1 (volume) of the supplied three-dimensional curl filament and its compression degree, so in order to obtain a constant bulk density of 1q, It is necessary to keep the supply amount and degree of compression of the three-dimensional curl filament constant. However, although it is relatively easy to keep the degree of compression constant, it is extremely difficult to keep the supply 11 constant. In other words, since the three-dimensional curl filament is extremely bulky and is easily compressed and its volume changes even with a slight pressing force, it is usually supplied by wind power using a cotton opening machine or the like. For this reason, the supply of the 11-curl filament varies due to fluctuations in the wind, the hanging of the 11-body curl filament supplied to the cotton splitter, etc. It is difficult to make the filament supply layer constant, and the surface of the filament supply layer becomes wavy. In order to keep such a layer constant, it is thought to scrape it off using a bladeC
However, as mentioned above, the three-dimensional curl filament TL
(Since it is easily compressed by a pressing force of m or more, there is a drawback that even if the layer height is constant and the layer height is IF7, the bulk density is already changing.) Also, for example, cushioning materials for automobiles have a vertically asymmetrical shape and have uneven parts. However, it is difficult to automatically form cushions with partially different hardness distributions by mechanical methods without changing the bulk density. However, the present inventor further supplied an aggregate of filament fibers (1) that cause three-dimensional curls to the conveying lumen, and while moving the conveying position S, a large number of needle-like objects were erected. A pre-IC^ forming method (Japanese Patent Laid-Open No. 2002-120002) in which a rotating body made of No. 57-37,481, JP-A-57-37
, 482 yen) and made it possible to preform a cushion material into a predetermined shape without changing the bulk density. However, when preforming a cushion material by this method, the rotational peripheral speed of a rotating body made of a large number of acicular objects is:
It was usually set at 150-2000 m/min. The reason why the rotating body is rotated at such a relatively high speed is that the short filament fibers can be easily scraped off at predetermined areas by the needle-like object, and the short filament fibers are less likely to get entangled with the 11-shaped object. It was particularly effective in the case of preforming J5, in which the surface was scraped over, and in the case of preforming, in which relatively shallow scratching was carried out in parts. When scraping is performed partially in the range of rotational peripheral speed of the rotating body, the boundary line between the scraped part and the non-drawn part of the short filament fiber aggregate will be quite clear.

[Become something. However, the boundary angle at the boundary is likely to be slightly blunter than the desired angle, and there is no problem if the scraping is relatively shallow, but if the scraping is deep ( However, the upper part of the scraping part may spread more than necessary, and the result was not satisfactory. J3 and 1
．． This is an attempt to solve the conventional problems as mentioned above. In other words, an object of the present invention is to provide an improved method and apparatus for preforming a cushion material. The present invention also provides synthetic gas with steric curls.
An object of the present invention is to provide an improved preforming method and apparatus for cushioning materials used for beds, seats, etc. made of filament aggregates, especially cushioning materials that require deep scraping during preforming. It is. Structure of the invention (means for solving the problem wf) The above objects are achieved by a filament λ(1
The aggregate of the short filament fibers is supplied to a conveying device, and while the conveying device is moved, a rotary body having a large number of acicular objects is rotated, and the acicular objects are brought into contact with the short filament fiber aggregate. A method for preforming a cushion material in which a predetermined portion of the cushion material is molded into a predetermined shape by scraping off a predetermined portion with a hand, wherein the circumferential rotational speed of the rotating body is 0.1 m/min to 15 m/min. This is achieved by a pre-molding method. The present invention is characterized in that the relative rotational circumferential speed of the rotating body with respect to the conveyed short filament fiber aggregate is 0°15In y
This figure shows a method for preforming a cushioning material at a speed of 17 m/min to 17 m/min. The present invention also provides that the filaments scraped off by the rotating body are stripped by another rotating body that has a needle-like object that can interfere with one of the needles of the rotating body. The present invention further provides a method for preforming a cushioning material (δ). This shows a preforming method for a certain cushion material.The present invention is directed to a preforming method for a cushion material in which the rotating shafts of the rotating body and the rotary body rotate while moving. The present invention also provides a method for preforming a cushioning material in which a plurality of the above rotating bodies and other rotating bodies are used. A conveying device for short filament fiber aggregates: A scraping device consisting of a rotating body provided on the conveying device and having a large number of acicular bodies erected; This is achieved by a cushioning material preforming device which is provided with a stripping device consisting of a rotating body with a number of $1-like objects standing upright that can interfere with each other.The present invention also provides a scraping device and This invention shows a cushion material preforming device in which a groove is formed so that the rotating shaft of a rotating body of a stripping device can move up and down. The present invention also provides a preforming device for a cushion material made of cloth, metallic, terkine, or porcupine. This figure shows an apparatus for pre-forming a cushion material. (Function) Therefore, the J3
The biggest feature is the filament 'In 8) & 1[
The purpose is to scrape at a very low speed. Conventionally, the peripheral speed of rotation of a rotary body made up of a number of needle-shaped objects used for scraping 0-area citrus (filament) is 15.
A speed of 0 to 2,000 m/min is said to be optimal; at lower speeds, the needle-like object scrapes the short filament fibers in clumps, causing the short filament fibers to be scraped off at other locations. It was believed that the desired preforming would not take place in 1q. However, if the rotating body is operated at a very low speed, i.e., when the circumferential speed of rotation is set to 0.1+n/min to 15111/min, the scratching will not occur in lumps, and the contact with the This method scrapes the short filament fibers only in the areas where the short filament fibers are removed, and moreover, both the boundary line and the boundary angle at the boundary between the scraped part and the non-scraped part of the filament short fiber aggregate are clearer than in conventional scraping by high-speed rotation. Extremely accurate scraping can be done i'i. In particular, J3 (
J. Advantageous. In addition, the cushioning material of the present invention (pongee molded neck wear) has a large number of cap-like objects that can interfere with the needle-like objects of the scraping device, which is a rotating body made up of a large number of needle-like objects. A major feature is that the rotary body of the scraping device is further provided as a stripping device.In other words, when scraping the short filament fibers is carried out at a very low speed as in the above method, the rotating body of the scraping device There is a risk that the scraped short filament fibers may get tangled in the needle-like object of It scrapes away the fibers so that the scraping device always functions normally. (Example) The present invention will be described in more detail below based on an example of the present invention. Used in the present invention filament'), *Il
i If Jl fiber wood includes polyester, polyamide, boria f'pyrene, etc., but polyester is most preferred. Its thickness is 30 as a monofilament.
-2.000 denier, preferably 50 to 1°000 denier, most preferably (100 to 600 f neer), and is a filament containing three-dimensional curl. It means a three-dimensional curl filament in a broad sense, such as three-dimensional curl filament, but it is preferably a three-dimensional three-dimensional curl filament.
A double-twisted filament D as shown in FIG. 0 was made by method J5 and the method δ shown in Publication No. 2-14,448, and then cut to a predetermined size and untwisted to make the filament shown in FIG. 10. J, uncurled filament F/J49 in three directions V1 to γ. The length of the filament of the cotton mill is preferably 25 to 200 mm, especially 60 to 150 mm.
is preferred. Thus, portions of the filament coil over portions 1) in portion a, and portions C coil over portions d. However, the e section does not coil over the r section, but below it. Thus, a section of filament from 0 to d lies in two entanglements or coils of helix/υ. This can properly be called a non-directional helix, and is very useful in a spiral telephone cord that goes bad when one end of the coil becomes non-directional with respect to the other. The preforming device of the present invention, as shown in FIG. 1 J3 and FIG. 2, mainly consists of a filament short fiber conveying device 1, a scraping device 2, a stripping device 3, etc. K1481Rt feeding device 45. The conveying device 1 is, for example, an endless belt (for example, a slatted endless belt) installed between the chain 6 stretched between the sprockets 4 and 5, or a normal belt. A shape that is compatible with one surface of the molded product to be preformed on the endless belt (for example, in the case of preforming a molded product as shown in FIG. 12, a shape corresponding to the surface S of the molded product) is avoided. One of the backs (for example, sprocket 4) of the sprocket 1- is linked to a pulley 10 of a transmission 9 via a belt (or chain) 8 by a pulley 7. However, Another pulley 11 of the transmission 9 is arranged to be coupled to a motor 13 via a belt (or chain) 12.A scraping device 2 and a stripping device 3 are mounted on the conveyor 4! For example, as shown in FIG.
It is supported by the bottom frame 15 of the transport unit 15 via a vertically movable mechanism 16, and its upper part is located above the transport unit 13A. If the recessed structure to be scraped off is in the form of a groove with a constant depth, the support frame 14 is directly supported by an appropriate part of the conveying device 1, such as the bottom claim 15. It's okay. A shaft 18 is rotatably supported by a bearing 17 of this support frame 14, a rotating body 19 is fixed to the shaft 18, and this shift 18 is connected to a belt 21 by a pulley 20 coaxially attached. Power source through (e.g. 7-tor, transmission, etc.)
22 & ribs. In addition, another bearing 23 of the support frame 14 has a shaft 24.
is rotatably supported, and a rotating body 25 is fixed to the shaft 24. This shaft 24 is connected to a power source (for example, a motor) via a belt 27 by a pulley 26 that is coaxially attached. , transmission, etc.) 28. Note that the power sources for the rotating body 19 and the rotating body 25 do not necessarily need to be separate drive systems. Furthermore, the rotational direction of the rotating body 19 is in the opposite direction to the filament short fiber conveying direction of the short filament Jl strip conveying device 1, and the rotational directions of one rotary body and the rotating body 25 are particularly limited. Instead, the driving mechanism may be in the forward direction or in the reverse direction, but preferably each drive mechanism is configured so as to be in the opposite direction. Therefore, the rotating body 19 of the scraping device 2 and the stripping device 3
On the outer surface of the rotary body 25 of the stripping device 3, a large number of needle-like objects are erected as will be described later. Both rotating bodies are arranged so that they interfere with each other. The degree of interference is
Although it varies depending on the shape of the needle-like object, the angle of interference, the radius of curvature of the rotating body, etc., the depth of interference at the maximum interference position is usually 1 to 0.1 times the height of the E1-like object of the lifting device, preferably 0.
．． It is configured to be approximately 8 to 0.2. On the other hand, the vertically movable VjM II 16 is composed of tM IM such as a screw V, a cam, a rack-and-binion, a hydraulic cylinder, and a crank.
The vertical movable mechanism 16 is rotated by a motor 29, for example.
, shaft 30.31 and rotational transmitter 111i (e.g. umbrella I
'fl tun, wormwood V, etc. are interlocked through 32.33. In addition, a first-stage device (
A suction duct 1-34 is provided which communicates with the air conditioner (not shown). Note that the suction device may be provided with another mechanism for returning the scattered short filament fibers to the IY or short filament supply mechanism without causing the scattered short filament fibers to fall onto the filament shoulder aggregate on the conveying device 1, for example. This can be replaced by arranging a plate, a belt conveyor, a vibrating feeder, etc. in the direction of scattering of the short filament fibers. In addition, the rotating body 19 of the scraping device 2 and the rotating body 25 of the stripping device M3 are rotated around an axis parallel to the filament conveying direction with respect to the filament strip assembly on the short filament conveying device 1. The scraping can be performed by displacing the filament 1 and changing the angle thereof, or the scraping position can be changed by displacing the filament 1 in a lateral direction with respect to the conveying direction of the filament 1. In this way, it is also possible to scrape off the night S++ of the filament 'Et m IM aggregate. This can be achieved by using a structure as shown in FIG. 13, for example. That is, as shown in FIG. 13, the first support body 14a that supports the scraping device 2 and the stripping device 3 is
M is rotatably supported by a bearing 102 of the second support member 14b by a shaft 101 (fixed to A 14 a) and extended in a direction parallel to the 2r lament transport direction. The shaft 101 is interlocked with a drive mechanism 103 installed on a drive unit support 102 extending from the second support 14b via a flexible joint, a universal joint, etc. as necessary. On the other hand, the second support frame 14b is supported at its lower end by the bottom frame of the transport device 1 via a vertically movable structure 16, and is supported on the support frame 14c so as to be movable left and right. There is. Further, a left-right movable mechanism 106 such as a screw leg whose end portion is fixed to the second support body 14b is installed on the third support body 14c. The outer surface of one rotating body of the scraping device 2 and the stripping device 3
There are various types of needle-like objects that are erected in large numbers on the outer surface of the rotary body 25, and examples include Betsufu, Metallic, Ticaine (41), and Bokicopine. The clothing is shown in Figures 3 and 4! Glue cotton cloth, linen cloth, rubber sheet, leather, etc. appropriately (base F435 made of 6 layers).
Metallic copper 36 is planted at an appropriate density in the third
As shown in the figure, there are linear shapes, dogleg shapes as shown in FIG. 4, and various other shapes. In the case of the scraping device 2, the needle 36 has a diameter of about 11 mm.
2-2 mm, preferably 0.2-1 ml1. The quality is usually 1 to 3Qm+n, preferably 2 to 3Qm+n from the surface of the base layer 35.
15 mm, and the planting density of the needles 36 is 4 to 6 needles/
cm2 Preferably 2 to 5 pieces/Cm2. On the other hand, in the case of stripping device 3, the thickness of 1136 is approximately 0.2 to 3 mIII in diameter, preferably 0.2 to 2 m
111II1. The quality is usually 1 to 4' from the surface of the base layer 35.
Omm. Preferably it is 2 to 30 m111, and the planting density of 136 is 4 to 15 plants/'Cm2, preferably 2 to 10 plants/cra2. Attach the tt 711 to the rotating body 19 of the scraping device 2 (the angle of the needle 36 with respect to the tangent to the outer circumference of the rotating body when scraping varies depending on the length of the needle and the planting density, but from the opposite direction of rotation, it is The angle of the needle 36 when the clothing is attached to the rotating body 25 of the stripping device 3 is usually 45° to 100°, preferably 70° to 90°. 5!i! depending on the density, but in the case of a straight needle from the opposite direction of rotation, it is usually 45 to 100', preferably 60 to 90 degrees.Therefore, the rotation of the rotating bodies 19 and 25 is opposite to each other. In the case of the direction, the needle-shaped object of one rotating body and the 511-shaped object of the rotating body 25 differ depending on the length of the needle, the planting density, the depth of interference, etc. at the maximum interference position, but the 21 interfere with each other at an angle of about 90 to 1E30°, preferably 100 to 170°.
137 is tightly wound in the circumferential direction on the surface of the rotating body 19 or 25. In the case of the scraping device 2, the tooth spacing is about 5 to 2 Qmm, preferably 7=-', 5
mm, the height of the saw teeth 38 is 1-5 mm, the tooth spacing is 2-8, /Cm, while in the case of the stripping device 3 the tooth spacing is about 3-2 Q mm, preferably 7-15
mm, the height of the sawtooth 38 is 1 to 8 mm, and the black peak interval is 1 to 9 crystals 1/cm. Also, as shown in FIG. 6, a structure 39 with many nails 40 protruding from it, or a fiber-reinforced rubber substrate 41 with many teeth 42 protruding from it, as shown in FIG. 7, may also be used. stomach). As shown in FIG. 8, the Tikaine is made by cutting and raising a band-shaped base 43 to form teeth 44, and is used in a numbered manner that is tightly wound in the circumferential direction on the surface of the rotating body 19 or 25. . However, among these IL-like substances, is one of the rotating bodies of the scraping device 2? As one object, a cloth ♀1 having dogleg-shaped needles as shown in FIG.
5.11 It is particularly desirable to have a button with a straight button as shown in Fig. 4. In addition, the button-like object of the scraping device 2 and the needle-like object of the stripping device 3 should be careful not to come into direct or ridge contact with each other, especially when the rigidity of the material 7T forming the grooves for both buttons or teeth is high. It is desirable that it be placed. The shape of one rotating body of the scraping device 2 can be arbitrarily selected depending on the concave shape of the molded object to be scraped, and may be cylindrical, barrel-shaped, Q-shaped ball-shaped, egg-shaped, or gourd-shaped. On the other hand, the shape of the rotating body 25 of the stripping device 3 is such that the shape of the rotating body 19 of the scraping device 2 is such that it interferes with the needle-shaped object on the entire outer peripheral surface of one rotating body of the scraping device 2. An appropriate one is selected depending on the Further, the length ε1 of the needle-like objects and the planting density of the rotating body 19 of the scraping device 2 do not necessarily have to be uniform, and they may be partially changed, and in this case, the stripping device The button closure of the second rotating body 25 can also be changed accordingly. Further, the number of rotating bodies 19 of the scraping device 2 does not necessarily have to be one, and a plurality of rotating bodies 19 may be used depending on the desired shape. It is also possible to form other grooves using another rotating body (not shown). In this case as well, the rotating bodies 25 of the stripping device 3 are installed in accordance with the number of rotating bodies 19 of the scraping device 2, and furthermore, if the rotation of the other rotating body is within the circumferential speed range of the method of the present invention, A stripping device is similarly arranged for this rotating body. The preforming equipment is provided with a filament fiber feeding device 45 as shown in FIG. 2, if necessary. As shown in FIG. 2, for example, the supply device 45 comprises a filament supply conveyor 46 and a waste cotton 1/47, and this waste cotton machine 47 is installed close to the conveyor device 61. Next, a method for preforming a seat cushion material using the above-mentioned apparatus will be described. As shown in Fig. 2, synthetic fiber filaments with thick denier three-dimensional curls, such as NJ & E:, are used as belt competitions as shown in Fig. 2.
Using a conveying device such as 746, the scraps are fed onto the conveying device 1 from the outlet 4B using a feeding wind pressure or the like. The supplied short filament fiber F 4ct is placed on the conveying device 12.
After being piled up, it is conveyed toward the scraping device 2. On the other hand, the power of the motor 13 is changed to a predetermined rotational speed by the speed changer 619, and then transmitted to the pulley 7 by the belt 8, and the rotational force rotates the sprocket 4 and moves the endless bells 1 to 6 of the conveying device 1. let This conveyance speed is normally set to Q, about 3 m/'min to 2 m/min. In this way, the filament λ0 fiber aggregate is conveyed to a position in contact with the scraping device 2, and a predetermined portion is scraped by the H-shaped object on the outer surface of the rotating body 19, which is rotated by the power transmitted by the belt 21 from the motor 22. taken. At this time, the rotational circumferential speed of one rotating body is 0.1 m/min ~
15 m/min, preferably 0.1 m/min to 10 m/min, and particularly preferably, the relative rotational circumferential speed with respect to the filament 7, n fiber aggregate to be further conveyed is O.1 m/min.
The speed is preferably in the range of 5 m/min to 17 m/min. on the other hand,
The filament entangled in the needle-shaped object of one of the rotating bodies scraped off by the rotating body 19) is stripped by the needle-shaped object on the surface outside the rotating body 25 of the stripping device 3, and thereby the filament is scraped off. The blown filament 7 (1 fiber) is suctioned and removed by the suction gutter 34. The rotating body 25 is rotated by the power transmitted by the belt 27 from the motor 28, and the peripheral speed of rotation of this rotating body 25 is Although it varies depending on the shape of the object, the radius of curvature J5 of the rotating body, the direction of rotation, etc., it is generally about 20 to 10.O○O% better than the rotational peripheral speed of the rotating body 19 at the scraping percentage iQ2. is 30-7
．． It rotates at a circumferential speed that is approximately 000% faster. Therefore, (the support frame 14 on which the scraping device 2 and the stripping device 3 are supported is supported by the bottom frame 15 of the conveying device via the vertically flexible rib 16, and the EF movable mechanism The rotation of the two motors is transmitted through the rotating shaft 30゜31 and the rotation transmission Ullf! 32, 33, and this rotation changes the position up and down.
This determines the height of one of the rotary bodies of the scraping device 2, so that necessary depressions are formed in the filament short fiber east coalescence due to the height. Furthermore, even if the stripping device 2 lowers - Ripping is performed. The filament short fiber aggregate preformed in this manner is further passed through a rubbing device, if necessary, and rubbed with a bar or the like to give a predetermined bulk density. The lament short fiber aggregate preformed in this way has a bulk density of usually 0.002 to 0.2 g/cm3, preferably 0.005 to 0.1 g/cm'l. ing. The thus preformed Filament Short Chess M Togoi molded body is transported by a transport device using the method described in Japanese Patent Application No. 163-086/1986, and is transported into the adhesive liquid in the adhesive liquid tank. After being immersed in water, it is pulled up vertically or almost vertically by another conveying device. At that point, the surface tension of the liquid will reduce the dripping to some extent. In between,
Filament lf:r 8a The excess adhesive adhering to the M aggregate molded body flows down inside the molded body. Next, the filaments are passed through a high-frequency dielectric heating device to evaporate adhering adhesive moisture or solvent in a very short period of time, and at the same time, the filaments are cured to some extent by the heat, thereby bonding each contact point between the filaments. After further movement by a conveying device, the obtained filament lock material is cut into a predetermined usage. In addition,
If there is a risk that the filament short fiber aggregate molded body will break when pulled up in the vertical direction, spray dry a small amount of adhesive liquid onto the horizontally running molded body 11 before the dipping treatment. Temporary adjunction may also be performed. A typical adhesive is soubrene-butadiene rubber. There are synthetic rubbers such as acrylonitrile-butadiene rubber, chloroprene rubber, urethane rubber, natural rubber, vinyl acetate adhesives, cellulose acetate adhesives, acrylic adhesives, etc., and latex. It is used in the form of an emulsion, solution, etc., preferably in the form of a latex or an emulsion. In addition, the amount of adhesive applied is based on the solid content i! Usually 10-300o/100q-filament, preferably 50-250g/10.0g filament. The short filament fiber aggregate coated with adhesive passes through a heating device, but 2 &1 digits are alternately inserted into the upper and lower ends of the holding guide to pull the aggregate upward. It prevents the structure from collapsing or fraying while being heated, and at the same time prevents the leakage of high-frequency radio waves. The filament χ(j) passing through a high-frequency dielectric heating device
-IZ, preferably 10Ml-1z to 30Gf-1z
The high frequency of the adhesive has a force density of 1M, which is sufficient to heat and dry the adhesive liquid and give shapeability to the filament short fiber aggregate molded article.
For example, a power of 0.1 to 10 kwh/cm3, preferably 0.5 to 5 kwh/cm3, is applied to dry and remove the solvent heat such as water and bond the filaments together. Therefore, even if the short filament fiber aggregate molded body is pulled up, it will not hold its own! It will not be cut midway between E and adhesive @. Roughly pass through a normal drying oven if necessary, and dry at 80 to 200°C, preferably 100 to 160°C, using hot air, infrared rays, heated steam, etc.
Post-curing is carried out by heating at a temperature of 10 to 60 minutes, preferably 15 to 40 minutes, and then cut to desired dimensions using a cutting device. When using as a cushioning material to provide even better rebound resilience, apply needling to the filament block by needling before applying the adhesive. The needling method is described in Japanese Patent Application No. 53-4, for example.
6,373 and the method disclosed in 07
Use juru 1:1 and poke the appropriate number of times with the appropriate pacification. This 10. & J: The length is determined depending on the purpose, but usually the diameter is 1.8 to 3.5 mm and the length is 50 to 2 mm.
,000 mm, and each button usually has 4 to 12 barbs. Specifically, for example, while supporting the lower surface of the formed filament short fiber aggregate block on a belt conveyor with a flat plate, such as a perforated plate, a slit plate, a slit-shaped conveyor, etc., The filament yXJ fiber aggregate block is needled at the appropriate density by moving the needle fixture up and down through a clear plate, such as a perforated plate, with or without a slit. (+1 +°j is J3, this holder is cranked) By rotation of l-, the shirt t-J5
This is done by actuating the crank connected to the holder and the fixture, during which time the short IIM assembly block is run 11 at a speed such that the needling is at appropriate intervals. The density can be varied depending on the purpose of use of the final cushioning material or the desired compression elasticity, and the larger the desired compression elasticity, the smaller the needle spacing, but it is usually 1 to 100. strands/100cm2, preferably 4 to 50 strands/1000II12. The thus needled material is subjected to adhesive treatment and drying treatment as described above. J. Instead of the above-mentioned needling, the filament may be compressed by a rolling method, a rubbing method, or the like. As for the rolling method, for example, a mounting plate on which a number of needles are set up at predetermined intervals is pressed from below the filament.
This is done by rolling and compressing at least one of the mounting plates. Effects of the Invention As described above, the method for preforming a cushion material of the present invention involves feeding an aggregate of short filament fibers having three-dimensional curls to a conveyance device, and moving a large number of needle-like objects while moving the conveyance device. In the method for preforming a sash material, the method comprises rotating a rotary body provided with the material, bringing the needle-like object into contact with an aggregate of short filaments, and scraping off a predetermined portion to form a predetermined shape. The rotation speed of the rotating body is 0.1m.
/min to 15m/min, and the device is
A conveying device for filament short fiber aggregates arranged in a three-dimensional H-ru; a scraping device provided on the conveying device and consisting of a rotary body with a large number of multi-L shaped bodies erected; and the scraping device. The rotating body J is made up of a number of needle-like objects that can interfere with the needle-like objects of the stripping device, and the stripping device is equipped with a rotating body J, which is made up of a number of needle-like objects that can interfere with the needle-like objects of the stripping device. It is possible to easily form a recessed structure of short filament fiber aggregates, which is extremely difficult to achieve using well-known mechanical methods such as compression.
Moreover, the boundary line and boundary angle at the boundary between the scraped part and the non-scraped part are clearer and more accurate than in the conventional method in which the rotating body of the scraping device was rotated at a relatively high speed. Even when the concave shape of the material requires deep scraping, it can be easily molded into a predetermined shape.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of a cushion material preforming apparatus according to the present invention, FIG. 2 is a schematic sectional view of an embodiment of a cushion material preforming apparatus according to the present invention, and FIGS. 3 to 7 is a cross-sectional view of the needle-like object used in the neck attachment of the present invention, No. 8
The figure is a perspective view of a needle-shaped object, FIG. 9 is a partial perspective view of a double-twisted filament, FIG. 10 is a front view of a three-dimensional three-dimensional curl filament, and FIGS. This is a schematic diagram of a cushioning material preformed by the method of the invention, and FIG. 13 is a perspective view showing the scraping device J3 of the cushioning material preforming device and the supporting means of the stripping device according to the invention. DESCRIPTION OF SYMBOLS 1... Conveying device, 2... Scraping device, 3... Stripping device, 14... Support frame, 16..., L lower movable device, 19.25... Rotating body, 45... ...Filament short fiber supply'v device. IN jT Applicant Takagi Chemical Research Institute Co., Ltd. iQ Figure 12

Claims (9)

[Claims] (1) An aggregate of short filament fibers having three-dimensional curls is supplied to a conveying device, and while the conveying device is moved, a rotating body having a large number of needle-like objects is rotated, and the needle-like objects are In a method for preforming a cushioning material in which a predetermined portion of the filament short fiber aggregate is brought into contact and scraped off to form a predetermined shape, the circumferential rotation speed of the rotating body is 0.
A method for preforming a cushion material, characterized in that the rate is 1 m/min to 15 m/min. (2) The relative rotational peripheral speed of the rotating body with respect to the transported filament short fiber aggregate is 0.15 m/min to 17 m/min.
The method for preforming a cushioning material according to claim 1, wherein the method is as follows. (3) A patent claim in which the short filament fibers scraped off by the rotating body are stripped by another rotating body that has needle-like objects that can interfere with the needle-like objects of the rotating body. A method for preforming a cushioning material according to item 1 or 2. (4) The method for preforming a cushion material according to claim 3, wherein the peripheral rotational speed of the other rotating body is about 20 to 10,000% faster than the peripheral rotational speed of the rotating body. (5) The method for preforming a cushion material according to claim 3 or 4, wherein the rotating shafts of the rotating body and the other rotating body rotate while moving up and down. (6) A conveying device for a short filament fiber aggregate having three-dimensional curls, a scraping device provided on the conveying device and consisting of a rotating body having a large number of needle-like bodies erected, and a scraping device for A cushioning material preforming device is provided with a stripping device comprising a rotating body having a large number of needle-like objects erected and capable of interfering with the needle-like objects. (7) The cushion material preforming apparatus according to claim 6, wherein the rotating shafts of the rotating bodies of the scraping device and the stripping device are configured to be able to move up and down. (8) The needle-like objects of the scraping device and stripping device are cloth,
The preforming device for cushioning material according to claim 6 or 7, which is made of metallic, tiquine, or porcupine. (9) A plurality of rotating bodies of the scraping device and the stripping device are each provided in claims 6 to 8.
An apparatus for preforming a cushioning material according to any one of paragraphs.