JP2003064572A - Method for producing recycled tile carpet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use carpet crushed products to economically obtain a tile carpet having a stable quality. SOLUTION: This process for producing the tile carpet in which a braking layer comprising a vinyl chloride sol and a reinforcing basic fabric in an integrated state is formed on the back side of a surface material, comprising superposing the reinforcing base fabric on the vinyl chloride sol coated on an endless belt, again coating the vinyl chloride sol on the reinforcing base fabric, and then superposing the surface material on the coated vinyl chloride sol, is characterized by coating the vinyl chloride sol on the reinforcing base fabric, supporting the carpet crushed products on the reinforcing base fabric through the vinyl chloride sol, superposing the reinforcing base fabric on the vinyl chloride sol layer coated on the endless belt, bringing the carpet crushed products supported on the reinforcing base fabric into close contact with the vinyl chloride sol coated on the endless belt, and thus forming the carpet crushed product layer in the vinyl chloride layer coated on the release endless belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tile carpet manufacturing method by recycling (reusing) waste carpet and a tile carpet.

[0002]

2. Description of the Related Art Most of commonly used carpets have a styrene-butadiene copolymer resin (SBR) on the back side of a surface material whose main material is thermoplastic fiber such as polypropylene fiber, nylon, polyester fiber and acrylic fiber. ethylene·
Vinyl acetate copolymer resin (EVA), vinyl chloride resin (P
It is constructed by laminating a backing layer mainly composed of a thermoplastic resin such as VC).

JP-A-2000-220281 and JP-A-200
0-220282, JP-A-11-105098, JP-A-10-259558, JP-A-10-151680, JP-A-9-173197, JP-A-9-109164, JP-A-9-56567, JP-A-5-24193 and the like. As described above, since thermoplastic polymer materials (fibers / resins) are used for the surface material and backing layer of the carpet, defective products and cutting scraps generated during the carpet manufacturing process, used carpet generated during replacement, etc. The waste carpet of No. 1 is finely crushed, and the crushed product is heated, or the crushed product is kneaded with a new thermoplastic resin composition and reused for molded articles such as mats and building materials. Utilization) methods are being studied.

Further, as another recycling method, Japanese Patent Laid-Open No. Hei 4
-339645 (Japanese Patent Publication No. 7-110530) shows that
In the process of manufacturing the tile carpet 21 by superposing the surface material 17 on the coating layer 12 of vinyl chloride sol applied to the endless belt 11, the carpet is applied to the coating layer 12 of applied vinyl chloride sol as shown in FIG. A method has also been studied in which a pulverized material 13 is sprayed and laminated, and a vinyl chloride sol 16 is further applied and laminated on the pulverized material layer 14 to superpose a surface material 17.

[0005]

Although various proposals have been made as described above, a product in which a waste carpet is reused has not yet been put into practical use and has not been marketed. The reason is,
In the method of heat-molding crushed carpet, even if the material of the discarded carpet is a thermoplastic polymer material, various materials with different thermal properties such as softening temperature, melting temperature, decomposition combustion temperature, etc. are mixed in it. The heating temperature at the time of molding cannot be uniformly set, and it is difficult to control the heating temperature. Further, in the method of kneading with a new thermoplastic resin composition and molding, Since it requires a large amount of the thermoplastic resin composition, it is not economically viable, and in any recycling method, waste carpet or its crushed product is separately collected according to the type of fiber or resin, and the crushed carpet product is It seems that it is practically impossible to make the quality of the products uniform, and so on.

In this respect, in the process of manufacturing a tile carpet, the above-mentioned recycling method in which a crushed carpet is sandwiched between the upper and lower coating layers of vinyl chloride sol (Japanese Patent Laid-Open No. Hei 4 (1999) -58242).
No. 339645 / Japanese Patent Publication No. 7-110530), fluidized vinyl chloride, rather than heat-molding a carpet ground product or kneading with a new thermoplastic resin composition,
Since it is only sprayed on the sol coating layer, it seems possible to put it into practical use. However, the pulverized material 13 scattered on the lower vinyl chloride sol coating layer 12 applied to the endless belt 11 overlaps vertically, and only the lowermost pulverized material of the pulverized material layer 14 comes into contact with the vinyl chloride sol. Since the pulverized material overlaid is in a floating state without being fixed to the vinyl chloride sol 12, in order to fix the pulverized material of the upper layer in the floating state, the upper layer chlorinated applied on the pulverized material layer 14 is fixed. Apply the amount of vinyl sol 16 to the tile carpet 2
1 must be made larger than that required for the backing layer 19, and the cost is contrary to the intention to reduce the cost by reducing the coating amount of vinyl chloride sol by the amount of the crushed carpet used. Get high Of course, before the upper layer vinyl chloride sol 16 is applied onto the pulverized material layer 14, the reinforcing base cloth 15 is laid on the pulverized material layer 14 and the nip rolls 24.
It was also tried to press the vinyl chloride sol into the crushed material layer inside 14 by 5 but in that case, the endless belt 1
The coating amount of the lower layer vinyl chloride sol 12 to be applied to No. 1 must be increased more than necessary, and the result is the same as the case where the coating amount of the upper layer vinyl chloride sol 16 is increased. After all, all the pulverized materials 13 are lower vinyl chloride sol 1
Although it is unavoidable to reduce the amount of spraying so that it directly touches No. 2, this reduces the meaning of recycling the discarded carpet, and the unevenness of adhesion of the pulverized material 13 is likely to occur, and the pulverized material layer 14 has a uniform thickness. It is not possible to economically obtain a tile carpet with stable quality.

[0007]

SUMMARY OF THE INVENTION Therefore, in the present invention, a carpet to be sandwiched between vinyl chloride sols to be applied on the upper and lower sides without increasing the coating amount of the vinyl chloride sols to be applied on the upper and lower sides in the process of manufacturing a tile carpet. An object of the present invention is to increase the amount of the crushed product and make the thickness of the crushed product layer constant so as to economically obtain a tile carpet with stable quality.

[0008]

According to the method for manufacturing a tile carpet according to the present invention, a reinforcing base cloth 15 is superposed on a coating layer 12 of vinyl chloride sol applied to a releasable endless belt 11 and a repair base cloth thereof is overlaid. Vinyl chloride again on the surface of 15
The sol 16 is applied, and the surface material 17 is applied to the surface of the application layer 16.
Are passed through the heating zone 18 together with the releasable endless belt 11 to gel the vinyl chloride sol 12.16 and the backing layer 19 in which the vinyl chloride sol 12.16 and the reinforcing base cloth 15 are integrated. A tile carpet raw material 20 formed on the back side of the backing layer 14, in which the releasable endless belt 11 is peeled off from the backing layer 14 and the surface material 17 are integrated, is cut into a desired shape to form a tile carpet. In the process of manufacturing 21, the vinyl chloride sol 27 is applied to the reinforcing base cloth 15, and the ground carpet product 1 is applied to the surface of the reinforcing base cloth 15 through the vinyl chloride sol 27.
3 is carried, the reinforcing base cloth 15 is superposed on the vinyl chloride sol coating layer 12 applied to the releasable endless belt 11, and the crushed carpet material 13 carried on the surface of the reinforcing base cloth 15 is released. Vinyl chloride applied to the releasable endless belt 11, which is adhered to the vinyl chloride sol coating layer 12 applied to the releasable endless belt 11.
The first feature is to form a crushed carpet layer 14 in the sol coating layer 12.

The second feature of the method for producing a tile carpet according to the present invention is that the reinforcing base cloth 15 is superposed on the vinyl chloride sol coating layer 12 applied to the releasable endless belt 11, and the repairing base cloth 15 is provided. The vinyl chloride sol 16 is applied again to the surface of the vinyl chloride sol 16, the surface material 17 is superposed on the surface of the coating layer 16 and passed through the heating zone 18 together with the releasable endless belt 11 to gel the vinyl chloride sol 12.16. , A backing layer 14 in which the vinyl chloride sol 12, 16 and the reinforcing base cloth 15 are integrated is formed on the back side of the surface material 17, and the releasable endless belt 11 is peeled from the backing layer 14 to be taken out. In the process of manufacturing the tile carpet 21 by cutting the tile carpet blank 20 in which the surface material 17 is integrated with the guide roll 28,
Vinyl chloride sol is applied to the downward surface of the releasable endless belt 11 which is reversed via the crushed carpet, and the crushed carpet 13 is laid on the surface of the downward coating layer 12 to be laminated. Reinforcing base cloth 15 on the layer 14
Is to overlap.

The third feature of the method for manufacturing a tile carpet according to the present invention is to superimpose a reinforcing base cloth 15 on a coating layer 12 of vinyl chloride sol applied to a releasable endless belt 11 and to repair the base cloth 15. The vinyl chloride sol 16 is applied again to the surface of the vinyl chloride sol 16, the surface material 17 is superposed on the surface of the coating layer 16 and passed through the heating zone 18 together with the releasable endless belt 11 to gel the vinyl chloride sol 12.16. , A backing layer 14 in which the vinyl chloride sol 12, 16 and the reinforcing base cloth 15 are integrated is formed on the back side of the surface material 17, and the releasable endless belt 11 is peeled from the backing layer 14 to be taken out. In the process of manufacturing the tile carpet 21 by cutting the tile carpet blank 20 in which the surface material 17 is integrated with the guide roll 28,
A vinyl chloride sol is applied to the downward surface of the releasable endless belt 11 which is reversed via a sheet, and the ground crushed material 13 is spattered on the surface of the downward coating layer 12 to be laminated. 15 is coated with vinyl chloride sol 27, and the reinforcing base cloth 15 is applied through the vinyl chloride sol 27.
The crushed carpet 13 is supported on the surface of the base material, and the reinforced carpet 15 is superposed on the carpet crushed material layer 14 laminated on the vinyl chloride sol coating layer 12 applied to the releasable endless belt 11 to reinforce it. A pulverized carpet material 13 carried on the surface of a base cloth 15 is coated on a releasable endless belt 11 to form a vinyl chloride sol coating layer 12
It is to be superposed on the carpet ground material layer 14 laminated on.

The tile carpet according to the present invention is formed by laminating a backing layer 19 on the back surface of the surface material 17, and the backing layer 19 is an upper vinyl chloride sol coating layer 16 from the surface material side (17).
The reinforcing base cloth 15, the carpet ground material layer 14, and the lower vinyl chloride sol coating layer 12 are laminated in this order, and the vinyl chloride sol of the upper vinyl chloride sol coating layer 16 is reinforced. And the intermediate vinyl chloride sol coating layer 2 between the reinforcing base cloth 15 and the carpet ground material layer 14
7 is formed, and the particle size of the crushed carpet layer 14 is 0.
It is characterized in that 5 to 3 mm vinyl chloride resin fragments 31 and fiber fragments 32 are mixed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a vinyl chloride resin coated on a releasable endless belt 11 and facing upwards.
Rather than directly spraying and depositing the crushed carpet material 13 on the sol coating layer 12, the vinyl chloride sol 27 is applied to the surface of the reinforcing base cloth 15 which is superposed on the vinyl chloride sol coating layer 12. Or laying it on the vinyl chloride sol coating layer 12 coated on the releasable endless belt 11 by supporting the crushed carpet 13 through the
A method is used in which the crushed carpet material 13 is splashed onto the vinyl chloride sol coating layer 12 which is coated downward on the releasable endless belt 11.

In order to cause the crushed carpet 13 to fly to the surface of the coating layer 12 of vinyl chloride sol facing downward, the releasable endless facing downward just before reversing via the guide roll 28 is used. The vinyl chloride sol 12 may be applied to the surface of the belt 11 by the roll coater 29, and the crushed carpet 13 may be scraped up by the brush roll 30 or the like on the coating layer 12 facing downward (FIG. 2). ), The crushed carpet 13 does not overlap and adhere to the coating layer 12 facing downward, even if a large amount is scraped, and if the scraped amount is large, vinyl chloride sol All the crushed carpet crushed materials 13 without the crushed carpet 13 remaining on the coated surface of 12 do not remain.
Adheres to the vinyl chloride sol 12 and is conveyed to the position where the reinforcing base cloth 15 is polymerized by the releasable endless belt 11.

On the surface of the reinforcing base cloth 15, crushed carpet 1
Similarly, in the case of supporting No. 3, vinyl chloride sol 27 can be applied by the roll coater 26 and the crushed carpet 13 can be made to fly to the applied surface. However, the reinforcing base cloth 15 faces downward, and the releasable endless belt 11
Since the vinyl chloride sol 27 applied to the reinforcing base cloth 15 is directed upward, the coated surface of the vinyl chloride sol 27 applied to the reinforcing base cloth 15 can be turned upside down and turned upside down. Even if the crushed carpet 13 is directly sprayed and deposited on the application layer of the above, when it is turned upside down and inverted, the crushed carpet crushed by touching the vinyl chloride sol 27 without touching the vinyl chloride sol 27. Thing 1
Excessive carpet crushed product 13A overlapping 3 is
When it is reversed and the coating layer of vinyl chloride sol 27 faces downward, it is shaken off (FIGS. 1 and 2). Therefore, there is no problem even if the amount of the crushed carpet 13 applied is large, and
If the amount of spray is large, there is no unattached portion where the carpet crushed material 13 does not adhere to the coated surface of the vinyl chloride sol 27, and all of the adhered carpet crushed material 13 adheres to the vinyl chloride sol 27 and is released. Formless endless belt 1
It is conveyed onto the coating layer 12 of vinyl chloride sol applied to the No. 1 substrate.

As described above, all the crushed carpets 13 contained in the crushed carpet layer 14 are adhered to the releasable endless belt 11 and the reinforcing base cloth 15 through the vinyl chloride sol 12, 27. Ground carpet layer 1
4 has a uniform thickness, and no unevenness of adhesion of the crushed carpet 13 occurs. In that case, even if there is a gap in the crushed carpet layer 14 that is not filled with the vinyl chloride sol 12, 27, the vinyl chloride sol 16 applied onto the reinforcing base cloth 15 permeates the reinforcing base cloth 15. Since it permeates, all of the carpet ground material 13 and the carpet ground material 13 are bonded by the vinyl chloride sol. For that purpose, a cloth having permeability to vinyl chloride sol is used for the reinforcing base fabric 15. However, since all cloth having normal air permeability is permeable to vinyl chloride sol, The type of the reinforcing base cloth 15 is not particularly limited.
However, since the reinforcing base fabric 15 is required to impart dimensional stability and shape stability to the tile carpet by suppressing expansion and contraction and warpage of the tile carpet, it has a basis weight of 60 g / m ² or less, preferably Is 30 to 50 g / m
² of the glass fiber nonwoven fabric (so-called glass paper) and glass fiber net (so-called mesh cloth) may be used.

The coating thickness of the lower layer vinyl chloride sol 12 applied to the releasable endless belt 11 is set to 1 to 3 mm, and the particle size of the ground material 13 is 0.5 mm or more in consideration of the thickness of the backing layer 13. It is preferably 1 to 3 mm. Then, the lower vinyl chloride sol 12 permeates into the pulverized material layer 14, and the individual pulverized materials 13 are embedded so as to sink into the lower vinyl chloride sol coating layer 12, so that the pulverized material layer 14 which does not cause intralayer separation is formed. It is formed. The upper layer vinyl chloride sol 16 applied onto the reinforcing base cloth 15 has a main purpose of application, even if a part thereof penetrates the reinforcing base cloth 15 to bond the pulverized material 13 and the reinforcing base cloth 15. Is in the adhesion between the backing layer 19 and the surface material 17, so it is not necessary to apply it with a particularly thick thickness.
The coating thickness may be set to about 1 mm. The vinyl chloride sol is prepared by mixing a vinyl chloride resin powder and a plasticizer as main materials, and by mixing a stabilizer, a filler (calcium carbonate) and the like, and the amount of the filler is 100 to 500 P.M. H.
R (meaning 100 to 500 parts by weight with respect to 100 parts by weight of resin) is set. However, the upper layer vinyl chloride sol 12
Is for the purpose of adhering to the surface material 17 and reinforcing the surface material 17 (improvement of pile removal strength and abrasion resistance). Therefore, the compounding amount of the filler in the upper layer vinyl chloride sol 16 is lower layer vinyl chloride.
It is less than the blending amount in sol 12, preferably 200.
P. H. R or less. In order to spray and laminate the crushed material 13 toward the reinforcing base cloth 15, it is preferable to spray the crushed material 13 from the hopper 22 through the sieve 23.

The surface material 17 is a tufted pile cloth,
Pile fabrics such as moquette, Axminster, Wilton, and towels, double raschel and other pile knitted fabrics, raised fabrics, needle punching felts, non-woven fabrics, and plastic decorative films (synthetic resin fabrics) are used. As the crushed carpet material 13, it is preferable to use a crushed material of a waste tile carpet 36 having a vinyl chloride resin of the same quality as vinyl chloride sol as a backing layer, which contains fiber fragments 32 which are crushed materials of the surface material. Can also be used. However, when the mixing ratio of the fiber fragments 32 increases, the surface area of the entire crushed product that comes into contact with the vinyl chloride sol 12 increases, and the thickness of the endless belt 11 applied to
A vinyl chloride sol 12 having a size of about 2 mm is not only absorbed by the pulverized product 13 and the coating of the vinyl chloride sol 12 is not formed on the back surface of the backing layer 19, but also the adhesion between the pulverized products is insufficient and the layer is resistant. It becomes difficult to form the pulverized material layer 14 having excellent internal peel strength. Therefore, the mixture ratio of the fiber fragments 32 contained in the pulverized material 13 is 30% by weight or less, preferably,
20% by weight or less.

It is relatively easy to adjust the mixing ratio of the fiber fragments 32 in this way. This is because the specific gravity of polypropylene fiber used for the surface material of carpet is about 0.
9, the specific gravity of nylon is about 1.2, the specific gravity of acrylic fiber is about 1.2, the specific gravity of polyester fiber is about 1.4,
The specific gravity of vinyl chloride resin is about 1.4. The specific gravity of the vinyl chloride resin forming the backing layer of the tile carpet is almost the same as that of the polyester fiber, but a large amount of calcium carbonate (specific gravity: about 2.9) is present in the backing layer of the tile carpet. Since it is blended, even if vinyl chloride resin is used, the resin pieces 31 of the backing layer
The specific gravity of is generally 2.5 or more. Since the resin shards 31 of the backing layer have a granular shape that is less likely to be blown out than the fiber shards 32, when the fan 34 is applied to the crushed material 13 of the waste carpet 36 falling from the crusher 33,
The fiber shards 32 are blown away and the resin shards 31 fall directly below the crusher 33. Therefore, it is possible to easily separate and collect the both, and the crushed carpet 13 used for recycling
It is also possible to easily adjust the mixing ratio of the fiber fragments 32 contained in 20% or less to 20% by weight or less.

Crushed carpet 1 used for recycling
3 should be passed through a sieve to remove fine powder of 100 mesh pass or less (generally particle diameter of 0.2 mm or less). The fine powder thus removed is blended with vinyl chloride sol as a filler and kneaded before use. Good to do. If the fine powder is removed from the crushed carpet 13 used for recycling in this way, the fine powder covers the coated surface of the vinyl chloride sol 12, 27, and the sticking of the coated surface of the vinyl chloride sol 12, 27. The inconvenience that the pulverized material 13 having a large particle size does not easily stick to (adhere) to the coated surface of the vinyl chloride sol 12, 27 is avoided. A preferred carpet ground 13 for recycling contains fiber debris,
Resin fragments 3 whose fibers protrude to the surface like flagella 3
It is 2. This is because, in such a resin fragment 32, fibers protruding from the surface like flagella adhere to the coated surface of vinyl chloride sol with a slight touch like a tentacle.

[0020]

According to the present invention, the crushed carpet 13 is
The endless belt 11 and the reinforcing base cloth 15 are sandwiched between two sheets of the upper and lower vinyl chloride sol 12, 16 rather than between the coating layers. It is possible to make the thickness of the crushed material layer 14 uniform by passing 15 through the nip rolls 24 and 25, and
In addition, the vinyl chloride sol 12, 27 applied to the endless belt 11 and the reinforcing base cloth 15 by pressing in such a manner is pressed into the pulverized material layer 14, and the space between the pulverized material 13 and the pulverized material 13 is vinyl chloride. -It is possible to join via sol 12.27. Even with such a pressing force, the vinyl chloride sol 12, 27 does not pass through the endless belt 11 and adheres to the nip roll 25, and the vinyl chloride sol 12, 27 passes through the reinforcing base cloth 15 and Even if it adheres to the other nip roll 24, it does not penetrate the crushed material 13 through the reinforcing base fabric 15 and adhere to the nip roll 24.

Since the upper layer vinyl chloride sol 16 serving as an adhesive with the surface material 17 is applied to the reinforcing base cloth 15 holding the crushed material 13 not on the crushed material layer 14,
The crushed material 13 does not adhere to the doctor 35 or roll coater or is not scraped off at the time of its application, and is sandwiched between the endless belt 11 and the reinforcing base cloth 15 so as to have a uniform thickness. As a result, the tile carpet 21 having a uniform thickness can be obtained.

In the present invention, the crushed carpet 13 is not directly laminated on the endless belt 11 as a deposited layer sprinkled on the coated surface of the vinyl chloride sol 12,
Once deposited on the coated surface, then turn the coated surface downward,
Since the surplus pulverized material 13A that does not directly touch the vinyl chloride sol 12.27 is shaken off, the pulverized material 13 is laminated on the surface coated with the vinyl chloride sol so that tiles are spread. In particular, when using the crushed carpet 13 from which fine powder having a particle size of 0.2 mm or less has been passed through a sieve, the coated surface of the vinyl chloride sol is covered with the fine powder and the adhesive strength is impaired. Instead, all carpet grounds 13 of the ground material layer 14 will be in direct contact with the vinyl chloride sol (12.27). For this reason, it is not necessary to apply the vinyl chloride sol 12, 27 in an extremely thick thickness so that the pulverized material layer 14 can be pressed into the pulverized material layer 14, and the coating thickness can be made thin enough for the pulverized material 13 to be touched and adhered. Crushed material 1
The fine powder having a particle size of 0.2 mm or less separated from No. 3 can be used by being mixed with vinyl chloride sol as a filler, so that the recycling (reuse) rate of the waste carpet 36 is increased, and the tile of a certain standard is used. The carpet can be obtained economically.

The fiber shards 32 mixed in the crushed carpet 13 are granular crushed products 13 like susa on the earth wall.
A strong backing layer with excellent crack resistance even when a vinyl chloride sol containing a large amount of filler (calcium carbonate) is used instead of a resin-rich vinyl chloride sol as it acts as a connecting material 19 is also formed, which also reduces the cost of the vinyl chloride sol, and the fibers protruding like flagella from the surface of the resin fragment 32 adhere to the vinyl chloride sol application surface like tentacles, so the resin fragment 32 is adhered. To improve
In addition, since the fiber fragments 32 thus mixed together have practical effects, it is not necessary to completely remove the fiber fragments 32 and select only the resin fragments 31 from the crushed carpet 13 and use the resin fragments 31. The fiber fragments 32 can be efficiently separated, and the economical effect of recycling the crushed carpet material 13 is also improved.

As described above, according to the present invention, the crushed carpets 13 are laminated so as to be lined up and laid on the endless belt 11 and the reinforcing base fabric 15 instead of merely being scattered and deposited, so that the laminated thickness can be made thin. .
Further, since the crushed carpet 13 is sandwiched between the endless belt 11 and the reinforcing base cloth 15, the coating amount of the vinyl chloride sol 12, 27 is reduced, and the strong backing layer 14 which is hard to crack is laminated. High quality tile carpet can be obtained efficiently and economically. Waste carpet 3
6 realistic and economical recycling is achieved.

[Brief description of drawings]

FIG. 1 is a side view of a tile carpet manufacturing apparatus according to the present invention.

FIG. 2 is a side view of the tile carpet manufacturing apparatus according to the present invention.

FIG. 3 is a side view of a tile carpet manufacturing apparatus according to a conventional technique.

[Explanation of symbols]

11 endless belt 12 Lower layer vinyl chloride sol (coating layer) 13 crushed material 14 Ground material layer 15 Reinforcement base cloth 16 Upper layer vinyl chloride sol (coating layer) 17 Surface material 18 heating zone 19 Underlayer 20 Tile carpet roll 21 tile carpet 22 hopper 23 sieve 24 nip roll 25 nip roll 26 roll coater 27 Intermediate vinyl chloride sol (coated surface) 28 guide rolls 29 roll coater 30 brush rolls 31 resin shards 32 fiber fragments 33 crusher 34 fans 35 Doctor 36 waste carpet

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B120 AB04 BA45 BA48 CA01 DB01                       DB02 EB30                 4F100 AK15B AK15D BA04 BA07                       BA10A BA10D CA23D DE05D                       DE05H DG12C DG13C DG16A                       EC08 EH46 GB08 GB81 JL16                       JL16D JL16H JM01B YY00D                 4L044 CB09 CB10

Claims (4)

[Claims] 1. A reinforcing base cloth (15) is superposed on a coating layer (12) of vinyl chloride sol applied to a releasable endless belt (11), and the surface of the repair base cloth (15) is again salified. A vinyl sol (16) is applied, and a surface material (17) is superposed on the surface of the coating layer (16) and passed through a heating zone (18) together with a releasable endless belt (11) to obtain a vinyl chloride sol ( 12.16) is gelled and a backing layer (19) in which the vinyl chloride sol (12.16) and the reinforcing base fabric (15) are integrated is formed on the back side of the surface material (17), and the backing layer (14) is formed. ), The releasable endless belt (11) is peeled off, and the backing layer (14) and the surface material (17) are integrated with each other.
In the process of manufacturing the tile carpet (21) by cutting into a desired shape, vinyl chloride sol (27) is applied to the reinforcing base cloth (15), and the reinforcing base is applied via the vinyl chloride sol (27). The crushed carpet (13) is carried on the surface of the cloth (15), and the reinforcing base cloth (15) is superposed on the vinyl chloride sol coating layer (12) applied to the releasable endless belt (11). The crushed carpet (13) carried on the surface of the reinforcing base cloth (15) is applied to the releasable endless belt (11) to form a vinyl chloride sol coating layer (1).
The releasable endless belt (11) closely attached to 2)
A method for producing a recycled tile carpet, characterized in that a crushed carpet layer (14) is formed in the coating layer (12) of vinyl chloride sol applied to the. 2. A reinforcing base cloth (15) is superposed on a coating layer (12) of vinyl chloride sol applied to a releasable endless belt (11), and the surface of the repair base cloth (15) is salinized again. A vinyl sol (16) is applied, and a surface material (17) is superposed on the surface of the coating layer (16) and passed through a heating zone (18) together with a releasable endless belt (11) to obtain a vinyl chloride sol ( 12.16) is gelled and a backing layer (19) in which the vinyl chloride sol (12.16) and the reinforcing base fabric (15) are integrated is formed on the back side of the surface material (17), and the backing layer (14) is formed. ), The releasable endless belt (11) is peeled off, and the backing layer (14) and the surface material (17) are integrated with each other.
In the process of manufacturing the tile carpet (21) by cutting into a desired shape, vinyl chloride sol is applied to the downward surface of the releasable endless belt (11) which is turned over via the guide roll (28). Characterized in that the ground carpet layer (12) is sprayed and laminated on the surface of the downward coating layer (12), and the reinforcing base cloth (15) is superposed on the ground carpet layer (14). To make recycled tile carpet. 3. A reinforcing base cloth (15) is superposed on a coating layer (12) of vinyl chloride sol applied to a releasable endless belt (11), and the surface of the repair base cloth (15) is again salified. A vinyl sol (16) is applied, and a surface material (17) is superposed on the surface of the coating layer (16) and passed through a heating zone (18) together with a releasable endless belt (11) to obtain a vinyl chloride sol ( 12.16) is gelled and a backing layer (19) in which the vinyl chloride sol (12.16) and the reinforcing base fabric (15) are integrated is formed on the back side of the surface material (17), and the backing layer (14) is formed. ), The releasable endless belt (11) is peeled off, and the backing layer (14) and the surface material (17) are integrated with each other.
In the process of manufacturing the tile carpet (21) by cutting into a desired shape, vinyl chloride sol is applied to the downward surface of the releasable endless belt (11) which is turned over via the guide roll (28). The crushed carpet (13) is laid on the surface of the downward coating layer (12) and laminated, and the vinyl chloride sol (27) is applied to the reinforcing base fabric (15), and the vinyl chloride sol is then applied. Carrying the crushed carpet (13) on the surface of the reinforcing base fabric (15) via (27), and laminating it on the vinyl chloride sol coating layer (12) coated on the releasable endless belt (11). The reinforcing base cloth (15) is superposed on the crushed carpet ground material layer (14), and the carpet ground material (13) carried on the surface of the reinforcing base cloth (15) is applied to the releasable endless belt (11). Application A method for producing a recycled tile carpet, characterized in that the recycled tile carpet is superposed on the carpet ground material layer (14) laminated on the applied vinyl chloride sol coating layer (12). 4. A backing layer (19) on the back surface of the surface material (17).
In a tile carpet formed by stacking
9) is laminated from the surface material side (17) in the order of the upper vinyl chloride sol coating layer (16), the reinforcing base cloth (15), the carpet ground material layer (14) and the lower vinyl chloride sol coating layer (12). The upper layer vinyl chloride sol coating layer (16) has a vinyl chloride sol that permeates the reinforcing base fabric (15) to form an intermediate vinyl chloride layer between the reinforcing base fabric (15) and the carpet ground material layer (14). A tile characterized by forming a sol coating layer (27), in which a crushed carpet layer (14) contains vinyl chloride resin fragments (31) and fiber fragments (32) having a particle size of 0.5 to 3 mm. carpet.