CN212499212U - Soft-bottom carpet prepared by utilizing recycled yarns - Google Patents
Soft-bottom carpet prepared by utilizing recycled yarns Download PDFInfo
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- CN212499212U CN212499212U CN202020360039.5U CN202020360039U CN212499212U CN 212499212 U CN212499212 U CN 212499212U CN 202020360039 U CN202020360039 U CN 202020360039U CN 212499212 U CN212499212 U CN 212499212U
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Abstract
The utility model discloses a soft-bottom carpet prepared by utilizing recycled yarns, which comprises a carpet fiber layer and a recycled fiber layer from top to bottom in sequence, wherein the carpet fiber layer comprises carpet fibers and first long-fiber non-woven fabrics; the carpet fiber layer and the recycled fiber layer are fixedly bonded. The utility model has the advantages of the material is soft, the comfort level is high, elasticity is good, the rerum natura is stable, have good thermal-insulated effect.
Description
Technical Field
The utility model belongs to the technical field of carpet manufacture, concretely relates to utilize soft end carpet of recovered yarn preparation and manufacturing method thereof.
Background
At present, the domestic carpet mostly adopts the carpet surface tufted with PVC or asphalt as the substrate of the carpet, a glass fiber layer can be added in the middle to improve the dimensional stability of the carpet, or the carpet surface tufted with the substrate of non-woven fabrics. However, PVC substrates used in carpets are generally hard and uncomfortable, and various manufacturers have been trying to find a new material to replace PVC as a carpet substrate; however, the nonwoven fabric substrate is relatively soft as compared with the PVC material, but the dimensional instability and easy warpage of the substrate cause quality defects during use. Therefore, the aim of the invention is to create a substrate which has the stability of PVC/asphalt and the comfort of soft bottom and is integrated with the scientific concept of green regeneration and environmental protection.
It has been found that during the production and processing of the fibers, color deviation, abnormal physical properties, color change transition can produce a part of defective products which cannot be used in the production of normal carpets, and therefore, the conventional method is to discard or cut and recycle the defective products. The cutting recovery is that the fiber is cut off, then high-temperature melting is carried out, then granulation is carried out, and then high-temperature melting is carried out to prepare other corresponding products according to the requirements. However, this recovery method requires the use of cutting, melting, granulating, molding, and other equipment, which consumes a large amount of energy for high-frequency operation, and also consumes a large amount of manpower for high-frequency operation, and during the fiber cutting process, a large amount of lint and dust are generated, which further causes physical damage to the operator, and causes secondary pollution and an irreversible effect on the environment due to a large amount of energy consumption.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the technical problem to be solved by the utility model is to provide a carpet prepared by using recovered yarns, so as to reduce energy consumption and secondary pollution in the process of yarn recovery, and simultaneously has the advantages of soft material, high comfort level, good elasticity, stable physical property, good heat insulation effect and the like;
the technical problem to be solved by the utility model is to provide a method for preparing the carpet by utilizing the recycled yarn.
The technical scheme is as follows:
a soft-bottom carpet prepared by utilizing recycled yarns comprises a carpet fiber layer and a recycled fiber layer from top to bottom in sequence, wherein the carpet fiber layer comprises carpet fibers and first long-fiber non-woven fabrics, the carpet fibers are tufted on the first long-fiber non-woven fabrics, the recycled fiber layer comprises recycled fibers and second long-fiber non-woven fabrics, and the recycled fibers are tufted on the second long-fiber non-woven fabrics; the carpet comprises a carpet fiber layer and a recycled fiber layer, wherein the tufted pile face comprises various loop pile, cut pile and loop cut pile mixed styles.
The carpet fiber layer and the recycled fiber layer are fixedly bonded.
The carpet fiber is made of PP, PET, PTT, nylon, PO or wool, preferably nylon or PP.
Wherein the first long-fiber non-woven fabric and the second long-fiber non-woven fabric are 70-150 g/m2Preferably 90 to 100g/m2。
Wherein the carpet fiber layer and the recycled fiber layer are bonded through an adhesive.
Wherein, the material of the adhesive is PVC, asphalt, PO, PU, PE or EVA, preferably PO.
Wherein, an emulsion layer is arranged between the carpet fiber layer and the recycled fiber layer.
Wherein, the material of emulsion layer be EVA, waterborne PU, ya keli or SBR, preferred SBR.
Wherein, a non-woven fabric layer is arranged below the recycled fiber layer.
Wherein, the recycled fiber layer and the non-woven fabric layer are connected by adhesive.
Wherein the gram weight of the non-woven fabric layer is 50-1200 g/m2Preferably 50 to 300g/m2。
Wherein the heat shrinkage of the non-woven fabric layer is less than 2%.
Wherein, the pile of the suede in the recycled fiber layer is not less than 100000 pieces/m2。
The method for manufacturing the soft bottom carpet by utilizing the recycled yarns comprises the following steps:
(1) tufting carpet fibers: tufting carpet fibers on the first long-fiber non-woven fabric to obtain a carpet fiber layer, wherein the carpet fibers are made of PP, PET, PTT, nylon, PO or wool;
(2) pre-coating and drying latex: uniformly mixing water-based latex SBR, an antibacterial agent, calcium carbonate and a foaming agent according to a mass ratio of 62-100:0-1:0-35:0-2, wherein the content of the antibacterial agent and the content of the foaming agent can be 0, preferably 65-70: 0-1: 28-35: 0-1, performing air foaming by using a foaming machine, wherein the foaming ratio is 1.2-10 times, preferably 1.5-3 times, uniformly coating the back surface of the carpet fiber layer, and the coating weight is 50-800 g/m2Preferably 80 to 350g/m2Drying the dried latex to obtain a latex layer;
(3) and (3) tufting of the recycled fibers: classifying the recycled fibers, plying the recycled fibers into 850D-4000D coarse recycled fibers, tufting the coarse recycled fibers on a second long fiber non-woven fabric to obtain a recycled fiber layer, wherein the pile density of the pile surface on the recycled fiber layer is 100000 pieces/m2450000 roots/m2The pile height is specifically 2.5 mm-12 mm, preferably 3.5 mm-6.5 mm, and a recycled fiber layer is obtained;
(4) recycling the soft bottom of the fiber tufting: PO and calcium carbonate are mixed according to the mass ratio of 20-45: 55-80, heating and melting after feeding in proportion, uniformly stirring, and preferably selecting the PO and calcium carbonate in a mass ratio of 20-30: 70-80, cooling and granulating to obtain PO-calcium carbonate adhesive particles; PO-calcium carbonateFeeding the adhesive particles into a square carpet bonder, heating and melting at 130-220 ℃, flatly coating the adhesive particles on the suede of a recycled fiber layer by using an extruder, scraping the suede to a height of 0.5-1.0 mm, preferably 0.5-0.8 mm by using a scraper, wherein the dosage of PO and calcium carbonate adhesive is 150-2000 g/m per square meter2Preferably 500 to 800g/m2Combining a recycled fiber tufting layer with a non-woven fabric layer, compacting by using a roller, and cooling at 5-30 ℃ to form a recycled fiber tufting soft bottom layer;
(5) bonding the carpet fiber layer with the recycled fiber layer: PO and calcium carbonate are mixed according to the mass ratio of 25-50: heating and melting at a ratio of 50-75, wherein the mass ratio of PO to calcium carbonate is preferably 25-35: 65-75, cooling and granulating to obtain PO-calcium carbonate adhesive particles;
feeding PO-calcium carbonate adhesive particles into a square carpet bonder, heating and melting the PO-calcium carbonate adhesive particles at 130-220 ℃, flatly coating the PO-calcium carbonate adhesive particles on the back surface of tufts of a soft bottom layer of recycled fiber tufts by using an extruder, scraping redundant parts by using a scraper, and bonding the PO-calcium carbonate adhesive particles with the latex surface of a carpet fiber tuft layer, wherein the dosage of the PO-calcium carbonate adhesive is controlled to be 500g/m per square meter2～2500g/m2The thickness is 0.8mm-1.5 mm; and (4) after bonding, pressing the materials by using a roller, and putting the materials into a cooling box at the temperature of 5-30 ℃ for cooling.
In the step (2), the drying conditions are as follows: the drying temperature is 140-200 ℃, and the drying time is 2-8 minutes.
In the step (4), the heating temperature of PO and calcium carbonate is 130-220 ℃;
the cooling temperature is 5-30 ℃;
the grain size of the granules is less than 4-40 meshes.
The recovery yarn needs to be classified and recovered and produced according to the fibrous material of yarn, and the recovery fibre of the same kind of material still needs to classify according to fibre thickness (dani number D), and the same or close fibre of dani number can be put together, and the great fibre of different dani numbers or dani number difference needs to do the management of distinguishing, fibrous thickness demand when tufting according to, can reach or be close to the fibrous thickness of tufting through the mode of plying with thinner fibre, and the tufting is on the long fine non-woven fabrics of second. The thermal shrinkage of the fibers used in the same-winding recycled fiber layer needs to be consistent and the thermal shrinkage is ensured to be within +/-3%.
Can produce defective products because the circumstances such as the colour deviation of product, rerum natura deviation, trade the look transition in the fibrous production process of yarn, the utility model discloses in the recovered fiber be exactly this kind of colour deviation, rerum natura deviation, trade the look transition and the unable fibre that uses. In the prior art, the raw materials are directly discarded or cut and recycled, and if the raw materials are directly discarded, the raw materials are wasted, and the production cost is increased. The utility model discloses it is different according to the material of retrieving fibre, classify it, divide into it: the categories of PP, nylon, PET, PTT, PO, wool and the like are classified according to the fiber thickness and the heat shrinkage of the defective products. The recycled fibers of the same material are also required to be classified according to fiber thickness (denier D), the fibers with the same denier or close to the same denier can be grouped together, the fibers with different denier or large difference in denier need to be distinguished and managed, and the thinner fibers can be plied to reach or close to the thickness of the tufted fibers according to the thickness requirement of the fibers during tufting, and are tufted on a second long-fiber non-woven fabric. For example, 1100D yarn may be doubled into 2200D and 680D yarn may be twisted into 2040D yarn using nylon recycled fiber, respectively. The thermal shrinkage of the fibers used in the same-winding recycled fiber layer needs to be consistent and the thermal shrinkage is ensured to be within +/-3%.
The purpose of such classification is to ensure that the raw material, thickness, height and density of the fibers are uniform and consistent throughout the production process. In order to ensure the smoothness of the recycled fiber layer in use, the pile height in the process of weaving the carpet needs to be strictly controlled to be consistent, and the height is required to be within plus or minus 2 mm; so as to ensure that the comfort and the softness of the whole batch of products tend to be consistent.
Has the advantages that:
the utility model discloses based on green's theory, the use amount of PVC and pitch that reduces as far as on traditional carpet production technology basis can not use these raw materialss even, creates more green, safe comfortable carpet.
The utility model discloses except that have that the material is soft, the comfort level is high, elasticity is good, the rerum natura is stable, have advantages such as good thermal-insulated effect. The utility model can not only stop the waste of the fiber of the defective product, but also absorb the defective products produced by other manufacturers, and directly use the fiber in the carpet by utilizing the existing equipment in the industry without adding other equipment, thereby really achieving the purposes of energy conservation and emission reduction to the maximum extent;
the utility model discloses tufting the recycled fibre to long fine non-woven fabrics on, adopt three-dimensional fiber structure, transversely or vertically weaving in the reduction current non-woven fabrics substrate production technique, to the violent influence of expend with heat and contract with cold environment, this three-dimensional structure has good stability as the substrate of carpet, has improved compliance and resilience, further improves the holistic stable effect of carpet.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the preparation process of the present invention.
FIG. 3 is a schematic view of the preparation process of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
In fig. 1, 1 is a carpet fiber, 2 is a first long fiber nonwoven fabric, 3 is a first resin adhesive layer, 4 is a second long fiber nonwoven fabric, 5 is a recycled fiber, 6 is a second resin adhesive layer, 7 is a latex layer, and 8 is a nonwoven fabric.
A soft-bottom carpet prepared by utilizing recycled yarns comprises a carpet fiber layer and a recycled fiber layer which are sequentially arranged from top to bottom, wherein the carpet fiber layer comprises carpet fibers and first long-fiber non-woven fabrics, the carpet fibers are tufted on the first long-fiber non-woven fabrics, the recycled fiber layer comprises recycled fibers and second long-fiber non-woven fabrics, and the recycled fibers are tufted on the second long-fiber non-woven fabrics; the carpet comprises a carpet fiber layer and a recycled fiber layer, wherein the tufted pile face comprises various loop pile, cut pile, loop-cut pile mixed styles and the like.
The carpet fiber layer and the recycled fiber layer are fixedly bonded.
Wherein, the carpet fiber is made of PP, PET, PTT, nylon, PO or wool.
Wherein the gram weight of the first long-fiber non-woven fabric and the second long-fiber non-woven fabric is 70-150 g/m2The thickness is less than 1.2mm, the strength is more than 10kgf, the thermal shrinkage is less than 0.9 percent, and the long-fiber non-woven fabric is a high-quality non-woven fabric material and is characterized by strong strength and capability of ensuring that the transverse dimension is always kept stable; the first long-fiber non-woven fabric and the second long-fiber non-woven fabric are made of terylene.
Wherein the carpet fiber layer and the recycled fiber layer are bonded through an adhesive.
Wherein, the adhesive is made of PVC, asphalt, PO, PU, PE or EVA. The adhesive is used for bonding the carpet fiber layer and the recycled fiber layer, and the adhesive can also be used for attaching the recycled fiber layer and the non-woven fabric layer. The preferred material of the adhesive is PO, and the PO and calcium carbonate are mixed according to the mass ratio of 25-50: mixing at a ratio of 50-75.
The proportion can be modified or other auxiliary agents can be added according to the needs; PO and calcium carbonate are firstly mixed according to the ratio of 25-50: feeding materials in a ratio of 50-75, heating and melting, melting PO, uniformly stirring with calcium carbonate to ensure good dispersibility of the calcium carbonate, and cooling and granulating. And then fed to a carpet tile bonder. Heating and melting the raw materials at 130-220 ℃, feeding the raw materials into a feeding port of a square carpet bonder for extrusion coating, flatly coating the raw materials on the back face of tufts of a soft bottom layer of recycled fiber tufts by a scraper, and removing redundant parts to bond the raw materials with the latex surface of a carpet fiber layer. According to the actual requirement of production, the dosage is controlled to be 500-2500 g/m2. The thickness is controlled to be 0.8mm-1.5mm according to the actual requirement of production. After coating, the coating is put into a cooling box at 5-30 ℃ for stable cooling, and the flatness of the product is ensured in the cooling process. And cutting the finished product after cooling.
Preferably, be equipped with the emulsion layer between carpet fibre layer, the recovery fibre layer, the material of emulsion layer is EVA, waterborne PU, ya keli or SBR, preferred SBR. The latex layer is added, so that the carpet has higher elasticity and better softness. EVA aqueous PU, acrylic or SBR coating weight Dry50g/m2～800g/m2And the coating mode is foaming and gluing.
The latex layer preferably adopts the following formula: the mass ratio of the SBR, the antibacterial agent, the calcium carbonate and the foaming agent is 62-100:0-1:0-35:0-2, and the antibacterial agent, the calcium carbonate and the foaming agent are optional components.
The preparation method of the latex layer comprises the following steps: the SBR, the antibacterial agent, the calcium carbonate and the foaming agent are put into a stirring tank according to the proportion, and are uniformly stirred and then foamed by a foaming machine, and are uniformly coated on the back of the carpet fiber layer to scrape the redundant part. The coating weight was 50g/m2～800g/m2So as to play a role of fiber reinforcement and avoid appearance defects caused by falling off; and after coating, the mixture enters a drying oven with the temperature of 140-200 ℃ at the speed of 5 m/min for drying for 2-8 min, and the latex is dried thoroughly and then is rolled for standby.
Wherein, a non-woven fabric layer is arranged below the recycled fiber layer, and the thermal shrinkage rate of the non-woven fabric is less than 2%; gram weight interval: 50 to 1200g/m2. The non-woven fabric layer is of an unnecessary structure, the non-woven fabric layer can be increased for the purpose of improving the appearance or further improving the stability of the carpet, the non-woven fabric layer can be made of terylene or nylon, the heat shrinkage rate is less than 2 percent, the non-woven fabric layer is not easy to fluff and delaminate, and the gram weight is 50-1200 g/m2In the meantime.
Example 1: the method for manufacturing the soft bottom carpet by utilizing the recycled yarns comprises the following steps:
(1) carpet fiber tufts
Tufting the nylon fiber on the first long fiber non-woven fabric by using tufting machine equipment to form a carpet fiber layer, and coiling for later use. The surface of the carpet fiber layer with pile is the carpet pile surface, the other surface is the back of the pile, and the latex is pre-coated.
(2) Drying the pre-coated latex
The water-based environment-friendly latex SBR is adopted, and the proportion is that SBR: antibacterial agents: calcium carbonate: the foaming agent is 62-100:0-1:0-35:0-2, preferably 65-70: 0-1: 28-35: 0-1. The raw materials are put into a stirring tank according to the proportion, after being uniformly stirred, a foaming machine is used for air foaming, the foaming multiplying power is 1.2-10 times, preferably 1.5-3.0 times, and the raw materials are uniformly coated on carpet fibersThe back of the layer tufts is scraped of excess latex with a scraper. Controlling the coating weight to be 50-800 g/m2Preferably 80 to 350g/m2The amount of the dry latex is 5 m/min after coating, drying is carried out for 2-8 min in an oven at 140-200 ℃, and the latex is rolled for standby after drying;
(3) recycled fiber tufts
The recycled fiber adopts stranded nylon coarse fiber of about 850D-4000D, and the fiber with the approximate thickness is selected to be directly tufted on the second long-fiber non-woven fabric through a tufting machine to prepare a recycled fiber layer for standby coiling. The pile density of the pile face is 100000 pieces/m2450000 roots/m2The pile height is specifically 2.5 mm-12 mm.
Specifically, the following description is provided: the direction of the binding surface of the recovered fiber layer can not be switched randomly according to the requirement. Namely, the back surface of the recycled fiber layer is bonded with the non-woven fabric layer, and the suede surface of the recycled fiber layer is attached to the latex surface of the carpet fiber layer.
(4) PO bonding layer (second resin bonding layer is optional)
PO and calcium carbonate are mixed according to the ratio of 20-45: 55-80 (preferably 20-30: 70-80), heating and melting (at 130-220 ℃), melting PO, uniformly stirring with calcium carbonate, cooling (at 5-30 ℃) to granulate (with the particle size of less than 4-40 meshes) after ensuring good dispersibility of the calcium carbonate, and ensuring uniform melting. Heating and melting the raw materials at 130-220 ℃, feeding the raw materials into a feeding port 11 of a square carpet bonder for extrusion coating, flatly coating the raw materials on the suede of a recycled fiber layer by using a scraper 10, scraping out a proper height of 0.5-1.0 mm (preferably 0.5-0.8 mm), and controlling the using amount to be 150-2000 g/m per square meter2(preferably 500 to 800 g/m)2) And combining the recycled fiber layer with the non-woven fabric layer. The product is pressed tightly by rollers and cooled stably at 5-30 ℃, the product is ensured to be flat in the cooling process, a soft bottom layer of recycled fiber tufting is formed, and the product is rolled for standby.
(5) PO bonding layer
PO and calcium carbonate are mixed according to the ratio of 25-50: 50-75 percent of the raw materials are heated and melted (at the temperature of 130-220 ℃), PO is melted and then mixed with carbonAnd uniformly stirring the calcium carbonate to ensure good dispersibility of the calcium carbonate, and then cooling (at the temperature of 5-30 ℃) to granulate the calcium carbonate with the particle size of less than 4-40 meshes. The raw materials are heated and melted at 130-220 ℃, fed into a feeding port 11 of a square carpet bonder to be extruded and coated, then are flatly coated on the back face of tufts of a recycled fiber tuft soft bottom layer by a scraper 10, and redundant parts are removed to be bonded with the latex surface of a carpet fiber layer. The dosage is controlled at 500g/m per square meter2～2500g/m2(preferably 600 g/m)2～1200g/m2) The thickness is controlled to be 0.8mm-1.5 mm. And after bonding, the adhesive is pressed by a roller and is put into a cooling box at 5-30 ℃ for stable cooling, and the flatness of the product is ensured in the cooling process. And cutting the finished soft carpet into a certain size according to actual requirements.
In the method for manufacturing the soft bottom carpet by using the recycled yarns, the detection data are as follows:
example 2: rebound resilience ratio for wheelchair experiments
And taking the size of the finished square blanket as 500 mm/500 mm, carrying out full thickness measurement on the sample by using a thickness gauge, and recording effective data. The measured carpet is placed on the bottom plate of a foot wheel chair tester to be fixed, the simulated wheel chair feet with the load of 90kg are placed on the carpet surface, the rotating frequency is set to be 2000 revolutions, and the tester is started. After the rotation is finished, the sample blanket is taken out and horizontally placed for 24 hours. And after the steps are completed, the thickness gauge is used again to measure the full thickness of the sample, and effective data are obtained. And calculating the resilience ratio after comparing the valid data.
Soft-backed carpet and carpet without optional structure were made with reference to the process of example 1.
And (4) conclusion: high percentage ratio high rebound resilience and good elasticity
TABLE 1 rebound resilience ratio of wheelchair test of the present invention and a race
TABLE 2 rebound resilience ratio of the present invention to wheelchair test without carpet of unnecessary construction
2 six-foot drum experiment resilience ratio-supplementary data for good elasticity
And taking the finished carpet tile, performing full thickness measurement on the sample by using a thickness gauge, and recording the effective number. Cutting, attaching to the inner wall of a roller, placing into a six-foot roller testing instrument, setting 12000 turns, and starting the instrument. After the rotation is finished, the sample blanket is taken out and horizontally placed for 24 hours. And after the steps are completed, the thickness gauge is used again to measure the full thickness of the sample, and effective data are obtained. And calculating the resilience ratio after comparing the valid data.
And (4) conclusion: high percentage ratio high rebound resilience and good elasticity
TABLE 3 resilience ratio of six-foot roller experiment with competitive products carpet
Table 4 hexapod roll resiliency ratio of carpet of the present invention to carpet without optional structure
3 hardness and softness test- -supplementary data for soft material and high comfort
Taking the size of the finished square blanket as 500mm by 500mm, planning 25 sampling points on average, measuring and recording the data of each sampling point by using a hardness tester according to a fixed sequence, and finally obtaining effective detection data by using the average value of the 25 sampling points.
And (4) conclusion: low value, high softness and good softness
TABLE 5 hardness test of the utility model
TABLE 6 hardness test of carpet without non-essential structure
4 carpet thermal insulation effect- -supplementary data for good thermal insulation effect
And (4) cutting the finished square blanket to be completely consistent with the size of the iron plate, and covering the iron plate of the equipment. The temperature of the apparatus was set to 80 ℃ and maintained until the end of the test. After the finished square carpet is placed on an equipment iron plate at 80 ℃, the initial temperature of the middle position of the carpet surface is immediately measured and effective data is recorded, then timing is carried out, a carpet surface thermal conductivity temperature test is carried out every 6 minutes, and the effective data is recorded.
And (4) conclusion: low surface temperature, poor thermal conductivity and good thermal insulation effect
TABLE 7 thermal insulation effect test of the utility model and the competitive products carpet
TABLE 8 temperature effect test for carpet without non-essential structure
Claims (10)
1. A soft-bottom carpet prepared by using recycled yarns is characterized by comprising a carpet fiber layer and a recycled fiber layer, wherein the carpet fiber layer comprises carpet fibers (1) and a first long-fiber non-woven fabric (2), the carpet fibers (1) are tufted on the first long-fiber non-woven fabric (2), the recycled fiber layer comprises recycled fibers (5) and a second long-fiber non-woven fabric (4), and the recycled fibers (5) are tufted on the second long-fiber non-woven fabric (4);
the carpet fiber layer and the recycled fiber layer are fixedly bonded.
2. The soft carpet using recycled yarn as claimed in claim 1, wherein the carpet fiber (1) is PP, PET, PTT, nylon, PO or wool.
3. The carpet as claimed in claim 1, wherein the first and second long fiber non-woven fabrics (2, 4) have a grammage of 70-150 g/m2。
4. The soft-backed carpet made with recycled yarns of claim 1, wherein the carpet fiber layer and the recycled fiber layer are bonded together with an adhesive.
5. The carpet with soft bottom made of recycled yarn according to claim 4, wherein the adhesive is made of PVC, asphalt, PO, PU, PE or EVA.
6. The soft bottom carpet made from recycled yarn according to claim 1, wherein a latex layer is arranged between the carpet fiber layer and the recycled fiber layer.
7. The carpet with soft bottom made of recycled yarn according to claim 6, wherein the latex layer is made of EVA, aqueous PU, acrylic or SBR.
8. The carpet tile using recycled yarn as claimed in claim 1, wherein a non-woven layer is disposed under the recycled fiber layer.
9. The carpet tile using recycled yarn as claimed in claim 8, wherein the recycled fiber layer and the non-woven layer are bonded with an adhesive.
10. The carpet as claimed in claim 8, wherein the nonwoven fabric layer has a grammage of 50-1200 g/m2The heat shrinkage rate of the non-woven fabric layer is less than 2%, and the pile of the suede in the recycled fiber layer is not less than 100000 pieces/m2The pile height is higher than 2.5mm and lower than 12 mm.
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