CN111041732A - Preparation method of household carpet - Google Patents
Preparation method of household carpet Download PDFInfo
- Publication number
- CN111041732A CN111041732A CN201911386338.4A CN201911386338A CN111041732A CN 111041732 A CN111041732 A CN 111041732A CN 201911386338 A CN201911386338 A CN 201911386338A CN 111041732 A CN111041732 A CN 111041732A
- Authority
- CN
- China
- Prior art keywords
- carpet
- ecdp
- trilobal
- cdp
- household
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C17/00—Embroidered or tufted products; Base fabrics specially adapted for embroidered work; Inserts for producing surface irregularities in embroidered products
- D05C17/02—Tufted products
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
- D01D5/23—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2503/00—Domestic or personal
- D10B2503/04—Floor or wall coverings; Carpets
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention relates to a preparation method of a household carpet, which comprises the steps of firstly changing a spinneret orifice on a spinneret plate from a round shape to a trilobal shape in the process of preparing round sheath-core composite fibers by ECDP and CDP according to a BCF process, cooling by adopting circular blowing, and controlling the three leaves of the trilobal spinneret orifice on the spinneret plate to be unequal in length to prepare a carpet yarn; then implanting the carpet yarn into a polyester base fabric containing low-melting-point polyester fibers through tufting, carrying out heat treatment until the low-melting-point polyester fibers are melted, and then cooling to obtain the household carpet; the gram weight of the prepared household carpet is 500-1000 g/m2The compressibility is 43-46%, and the compression resilience is more than or equal to 95%. Hair brushThe preparation method of the household carpet is simple and feasible, low in cost and suitable for popularization and application, and the prepared household carpet is excellent in compression elasticity.
Description
Technical Field
The invention belongs to the technical field of textile fabrics, and relates to a preparation method of a household carpet.
Background
Bulk Continuous Filament (BCF) technology is a process for producing chemical fiber Bulk Filament by utilizing hot fluid jet deformation processing. The most widely used production method at present is a spinning-drawing-deforming-winding one-step method, which has the advantages of short process flow, low investment, high yield and the like. BCF products have the characteristics of good bulkiness, stable three-dimensional curling and forming and excellent hand feeling, and are widely applied to the fields of household and commercial carpets, automobile cushions, decorative fabrics and the like.
Since the BCF production technology is industrialized, the BCF raw materials are mainly Polyamide (PA) and polypropylene (PP) in the world, and polyester is rarely adopted. This is due to the general belief in the industry that the performance of PET is not suitable for high-end carpet products. In recent years, however, PET fiber has come to be used as a raw material for BCF carpet also with a strong price advantage. At present, the PET carpet material becomes an important substitute of the traditional carpet material and has good market prospect. Compared with PA6 fiber, PET fiber is not easy to curl and deform, which is more favorable for the market acceptance and acceptance of PET carpet, but the prior PET household carpet has lower rebound elasticity, which limits the application of the carpet to a certain extent.
Therefore, the research on the preparation method of the PET household carpet with better rebound resilience is of great significance.
Disclosure of Invention
The invention provides a preparation method of a household carpet, and aims to solve the problem of low resilience of a terylene household carpet in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a household carpet comprises the steps of implanting carpet yarn into a polyester base fabric containing low-melting-point polyester fiber through tufting, carrying out heat treatment until the low-melting-point polyester fiber is melted, and cooling to obtain the household carpet;
the preparation process of the carpet yarn comprises the following steps:
in the process of preparing circular sheath-core composite fibers (ECDP can be used as sheath fibers, CDP can be used as core fibers, CDP can be used as sheath fibers, and ECDP is used as core fibers) from ECDP and CDP according to a BCF process, spinneret holes on a spinneret plate are changed into trilobal shapes from circular shapes, cooling is carried out by adopting circular blowing, and arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarns are prepared;
the length ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.5-2.5, the three leaves are the same in width, the ratio of the length of the shortest leaf to the width of the shortest leaf is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
namely, a plurality of trilobal spinneret orifices (three leaves are in a Y shape) are arranged on the spinneret plate, each trilobal spinneret orifice comprises a leaf I, a leaf II and a leaf III, and the leaf I in different trilobal spinneret orifices is the shortest leaf in the three leaves; the length ratio of the leaves I, the leaves II and the leaves III in the same trefoil spinneret orifice is 1.0: 1.5-2.5, the widths of the leaves I, the leaves II and the leaves III in the same trefoil spinneret orifice are the same, and the length ratio of the leaves I in the same trefoil spinneret orifice to the width ratio is 2.5-3.5: 1; in the same trilobal spinneret orifice, the included angle between the central lines of the blades I and II is 120 degrees, the included angle between the central lines of the blades II and III is 120 degrees, and the included angle between the central lines of the blades I and III is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the center lines of the blades I of all the trilobal spinneret orifices pass through the circle center, and in the same trilobal spinneret orifice, the distance between the blade I and the circle center is larger relative to the blades II and III.
The principle of the invention is as follows:
the household carpet is prepared by implanting carpet yarn into polyester base fabric containing low-melting point polyester fiber through tufting, the carpet yarn is skin-core composite fiber prepared by using ECDP and CDP as raw materials according to a BCF process, the ECDP and CDP endow the carpet yarn with excellent dyeing property, the ECDP and the CDP are extruded out from a trilobal spinneret orifice on the same spinneret plate in the spinning process, an imaginary circle is made around the center of the trilobal, the part of the trilobal, which is coincided with the imaginary circle, is a core layer, the rest is a skin layer, and in the skin-core composite spinning process, the distribution relation of melt on the spinneret plate is as follows: the core layer corresponds to one melt I (ECDP or CDP), and the skin layer corresponds to the other melt II (CDP or ECDP); when two melts are extruded from the spinneret orifice under the action of spinning pressure, the melt I is mainly extruded from the core layer, the melt II is mainly extruded from the skin layer, and the section of the spinneret orifice is trilobal, so that the part of each leaf of the trilobal close to the center of a circle is the melt I, and the end of each leaf far away from the center of a circle is the melt II; and drawing to form the fiber after cooling by circular blowing. During the heat treatment of the fibers in the deformation chamber, there is a force effect on the cross-section: each blade is provided with two components of ECDP and CDP, the two components have different heat shrinkage rates, so that a drag force is formed on the blade, and the drag forces on the three blades face to or depart from the center of the imaginary circle at the same time; moreover, because the three lobes of the trilobal spinneret orifice are not exactly equal in length, drag forces on each lobe are different; the ECDP/CDP skin-core composite monofilament in the prepared carpet yarn presents a distorted shape due to the different drag force, the distorted performance is stable, and a certain three-dimensional curled shape is formed due to air deformation on the basis of distortion, so that the compression resilience of the household carpet prepared by taking the carpet yarn as a raw material is greatly increased.
As a preferred technical scheme:
according to the preparation method of the household carpet, the polyester base fabric is composed of the PET DTY yarns and the low-melting-point polyester fibers in a mass ratio of 8:2, and the melting point of the low-melting-point polyester fibers is 110-120 ℃.
According to the preparation method of the household carpet, the mass ratio of the ECDP to the CDP is 50: 50.
According to the preparation method of the household carpet, in the preparation process of the ECDP, the feeding amount of SIPA is 1.2-2.5 mol% of the feeding amount of PTA, and the feeding amount of PEG is 10-15 wt% of the feeding amount of PTA; in the preparation process of the CDP, the feeding amount of the SIPA is 1.2-2.5 mol% of the feeding amount of the PTA.
According to the preparation method of the household carpet, the intrinsic viscosity of the ECDP is 0.60-0.65 dL/g, and the temperature of a spinning box corresponding to the ECDP is 268-272 ℃; the intrinsic viscosity of the CDP is 0.70-0.75 dL/g, and the temperature of a spinning box body corresponding to the CDP is 282-285 ℃.
In the preparation method of the household carpet, the flow of the BCF process is as follows: extrusion → circular air cooling → oiling → stretching → deformation → network → curling;
parameters of the BCF process are as follows: the spinning temperature is 275-280 ℃, the cooling temperature is 20-25 ℃, the pre-stretching roller temperature is 80-85 ℃, the stretching roller temperature is 150-165 ℃, the stretching ratio is 3.0-3.3, the deformation box temperature is 173-190 ℃, the deformation box pressure is 7.0-8.1 bar, and the winding speed is 1440-1580 m/min.
According to the preparation method of the household carpet, the carpet yarn has a three-dimensional crimp shape and consists of a plurality of ECDP/CDP skin-core composite monofilaments with the trefoil-shaped cross sections, an imaginary circle is made around the center of the trefoil-shaped cross section, the part of the trefoil-shaped cross section, which is overlapped with the imaginary circle, is the core layer, and the rest part is the skin layer.
According to the preparation method of the household carpet, the crimp shrinkage rate of the carpet yarn is 42.1-48.3% and the crimp stability is 71.9-83.7% measured according to GB/T6506-2001 synthetic fiber textured yarn crimp performance test method.
According to the preparation method of the household carpet, the breaking strength of the carpet yarn is more than or equal to 2.5cN/dtex, the elongation at break is 30.5 +/-5.0%, and the total titer is 700-1000 dtex.
According to the preparation method of the household carpet, the gram weight of the household carpet is 500-1000 g/m2The compressibility is 43-46% (the compressibility test method is the same as that of patent CN1281799C), and the compression resilience is more than or equal to 95% (the compression resilience test method is the same as that of patent CN 1281799C).
Has the advantages that:
(1) the preparation method of the household carpet is simple and easy to implement, low in cost and suitable for popularization and application;
(2) the home carpet prepared by the preparation method of the home carpet provided by the invention has the advantages that the fibers can form a certain three-dimensional crimp shape due to air deformation on the basis of twisting, so that the compression resilience of the home carpet prepared by taking the carpet yarn as the raw material is greatly increased.
(3) The household carpet prepared by the preparation method of the household carpet has excellent compression resilience, which is far higher than that of the existing terylene household carpet, even higher than that of the conventional nylon household carpet.
Drawings
FIG. 1 is a schematic view of the trilobal spinneret orifice of the present invention;
FIG. 2 is a schematic representation of the distribution of trilobal orifices of the present invention on a spinneret.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The trilobal spinneret orifices and the distribution of the trilobal spinneret orifices on the spinneret plate are shown in the attached drawings 1-2, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.5-2.5, the width of the three leaves is the same, the ratio of the length of the shortest leaf to the width of the shortest leaf is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest blade of each trilobal spinneret orifice passes through the circle center and points away from the circle center. The drawings are only schematic and should not be construed as limiting the invention.
Example 1
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 1.2 mol% of the feeding amount of PTA, and the feeding amount of PEG is 10 wt% of the feeding amount of PTA; in the preparation process of CDP, the feeding amount of SIPA is 1.2 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.6dL/g and CDP with the intrinsic viscosity of 0.7dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 268 ℃, and the temperature of the spinning manifold corresponding to CDP is 282 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 275 ℃, the cooling temperature is 20 ℃, the pre-stretching roller temperature is 80 ℃, the stretching roller temperature is 150 ℃, the stretching ratio is 3, the deformation box temperature is 173 ℃, the deformation box pressure is 7bar, and the winding speed is 1440 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.5:1.5, the width of the three leaves is the same, the length ratio of the shortest leaf to the width is 2.5:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.5cN/dtex, the elongation at break is 35.5%, the total fineness is 700dtex, the crimp shrinkage is 42.1%, and the crimp stability is 71.9%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 110 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 500g/m2Compressibility of 43% and compression resilience of95％。
Example 2
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 1.4 mol% of the feeding amount of PTA, and the feeding amount of PEG is 12 wt% of the feeding amount of PTA; in the preparation process of CDP, the feeding amount of SIPA is 1.5 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.62dL/g and CDP with the intrinsic viscosity of 0.72dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 270 ℃, and the temperature of the spinning manifold corresponding to CDP is 284 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 276 ℃, the cooling temperature is 20 ℃, the pre-stretching roller temperature is 82 ℃, the stretching roller temperature is 152 ℃, the stretching ratio is 3, the deformation box temperature is 178 ℃, the deformation box pressure is 7.2bar, and the winding speed is 1464 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.7:1.5, the width of the three leaves is the same, the ratio of the length of the shortest leaf to the width is 2.8:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.54cN/dtex, the elongation at break is 30.5%, the total fineness is 751dtex, the crimp shrinkage is 42.3%, and the crimp stability is 74.6%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 111 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 556g/m2The compressibility was 43% and the compression resilience was 95%.
Example 3
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 1.5 mol% of the feeding amount of PTA, and the feeding amount of PEG is 10 wt% of the feeding amount of PTA; in the preparation process of CDP, the feeding amount of SIPA is 1.5 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.62dL/g and CDP with the intrinsic viscosity of 0.72dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 270 ℃, and the temperature of the spinning manifold corresponding to CDP is 284 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 278 ℃, the cooling temperature is 22 ℃, the pre-stretching roller temperature is 82 ℃, the stretching roller temperature is 157 ℃, the stretching ratio is 3, the deformation box temperature is 180 ℃, the deformation box pressure is 7.5bar, and the winding speed is 1493 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.5:2.5, the width of the three leaves is the same, the length ratio of the shortest leaf to the width is 2.9:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.58cN/dtex, the elongation at break is 30%, the total fineness is 888dtex, the crimp shrinkage is 42.4%, and the crimp stability is 78.6%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 113 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 736g/m2The compressibility was 44% and the compression resilience was 96%.
Example 4
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 1.8 mol% of the feeding amount of PTA, and the feeding amount of PEG is 13 wt% of the feeding amount of PTA; in the preparation process of CDP, the feeding amount of SIPA is 1.8 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.63dL/g and CDP with the intrinsic viscosity of 0.74dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of the ECDP to the CDP is 50:50, the temperature of a spinning manifold corresponding to the ECDP is 271 ℃, and the temperature of a spinning manifold corresponding to the CDP is 283 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 276 ℃, the cooling temperature is 23 ℃, the pre-stretching roller temperature is 83 ℃, the stretching roller temperature is 160 ℃, the stretching ratio is 3.1, the deformation box temperature is 182 ℃, the deformation box pressure is 7.8bar, and the winding speed is 1494 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.8:2.3, the width of the three leaves is the same, the length ratio of the shortest leaf to the width is 3.1:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.61cN/dtex, the elongation at break is 29.5%, the total fineness is 899dtex, the crimp shrinkage is 42.4%, and the crimp stability is 79.9%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 114 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 834g/m2The compressibility was 45% and the compression resilience was 97%.
Example 5
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 2 mol% of the feeding amount of PTA, and the feeding amount of PEG is 15 wt% of the feeding amount of PTA; in the CDP preparation process, the feeding amount of SIPA is 2 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.65dL/g and CDP with the intrinsic viscosity of 0.75dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 272 ℃, and the temperature of the spinning manifold corresponding to CDP is 284 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 277 ℃, the cooling temperature is 21 ℃, the pre-stretching roller temperature is 82 ℃, the stretching roller temperature is 162 ℃, the stretching ratio is 3.1, the deformation box temperature is 184 ℃, the deformation box pressure is 8bar, and the winding speed is 1520 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:2.5:1.7, the width of the three leaves is the same, the ratio of the length of the shortest leaf to the width is 3.2:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.62cN/dtex, the elongation at break is 28.4%, the total fineness is 904dtex, the crimp shrinkage is 43.3%, and the crimp stability is 80.5%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 114 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 901g/m2Compressibility of 45% and compression reboundThe sex was 97%.
Example 6
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 2.5 mol% of the feeding amount of PTA, and the feeding amount of PEG is 15 wt% of the feeding amount of PTA; in the preparation process of CDP, the feeding amount of SIPA is 2.5 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.64dL/g and CDP with the intrinsic viscosity of 0.73dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 270 ℃, and the temperature of the spinning manifold corresponding to CDP is 283 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 276 ℃, the cooling temperature is 25 ℃, the pre-stretching roller temperature is 84 ℃, the stretching roller temperature is 162 ℃, the stretching multiple is 3.2, the deformation box temperature is 186 ℃, the deformation box pressure is 8bar, and the winding speed is 1543 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.5:2.5, the width of the three leaves is the same, the length ratio of the shortest leaf to the width is 3.2:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.65cN/dtex, the elongation at break is 27.4%, the total fineness is 905dtex, the crimp shrinkage is 43.7%, and the crimp stability is 80.6%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 115 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 987g/m2The compressibility was 45% and the compression resilience was 97%.
Example 7
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 2 mol% of the feeding amount of PTA, and the feeding amount of PEG is 12 wt% of the feeding amount of PTA; in the CDP preparation process, the feeding amount of SIPA is 2 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.65dL/g and CDP with the intrinsic viscosity of 0.75dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 272 ℃, and the temperature of the spinning manifold corresponding to CDP is 285 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 280 ℃, the cooling temperature is 23 ℃, the pre-stretching roller temperature is 85 ℃, the stretching roller temperature is 165 ℃, the stretching multiple is 3.3, the deformation box temperature is 189 ℃, the deformation box pressure is 8.1bar, and the winding speed is 1545 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:2.5:1.7, the width of the three leaves is the same, the ratio of the length of the shortest leaf to the width is 3.4:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.67cN/dtex, the elongation at break is 25.7%, the total fineness is 911dtex, the crimp shrinkage is 44.2%, and the crimp stability is 81.1%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 117 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 989g/m2The compressibility was 45% and the compression resilience 98%.
Example 8
A preparation method of a household carpet comprises the following basic steps:
(1) preparation of ECDP and CDP:
in the preparation process of ECDP, the feeding amount of SIPA is 2.5 mol% of the feeding amount of PTA, and the feeding amount of PEG is 12 wt% of the feeding amount of PTA; in the preparation process of CDP, the feeding amount of SIPA is 2.5 mol% of that of PTA;
(2) preparing carpet yarn:
in the process of preparing the circular sheath-core composite fiber from ECDP with the intrinsic viscosity of 0.62dL/g and CDP with the intrinsic viscosity of 0.72dL/g according to the BCF process, the spinneret holes on the spinneret plate are changed into a trilobal shape from a circle, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret holes on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared; wherein the mass ratio of ECDP to CDP is 50:50, the temperature of the spinning manifold corresponding to ECDP is 272 ℃, and the temperature of the spinning manifold corresponding to CDP is 285 ℃; the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling; parameters of the BCF process are as follows: the spinning temperature is 280 ℃, the cooling temperature is 24 ℃, the pre-stretching roller temperature is 85 ℃, the stretching roller temperature is 165 ℃, the stretching ratio is 3.3, the deformation box temperature is 190 ℃, the deformation box pressure is 8.1bar, and the winding speed is 1580 m/min;
the length ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.7:1.8, the width of the three leaves is the same, the ratio of the length of the shortest leaf to the width is 3.5:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared carpet yarn has a three-dimensional curling shape and consists of a plurality of ECDP/CDP sheath-core composite monofilaments with trilobal cross sections, an imaginary circle is made around the center of the trilobal, the part of the trilobal which is overlapped with the imaginary circle is a core layer, and the rest part is a skin layer; the breaking strength of the carpet yarn is 2.88cN/dtex, the elongation at break is 24.5%, the total fineness is 1000dtex, the crimp shrinkage is 48.3%, and the crimp stability is 83.7%;
(3) preparing a household carpet:
implanting carpet yarn into a polyester base fabric consisting of PET DTY (polyethylene terephthalate) yarns and low-melting-point polyester fibers with the melting point of 120 ℃ in a mass ratio of 8:2 through tufting, performing heat treatment until the low-melting-point polyester fibers are melted, and cooling to obtain a household carpet;
the gram weight of the prepared household carpet is 1000g/m2The compressibility was 46% and the compression resilience was 99%.
Claims (10)
1. A preparation method of a household carpet is characterized by comprising the following steps: implanting carpet yarn into a polyester base fabric containing low-melting-point polyester fiber through tufting, performing heat treatment until the low-melting-point polyester fiber is molten, and cooling to obtain a household carpet;
the preparation process of the carpet yarn comprises the following steps:
in the process of preparing the circular sheath-core composite fiber from ECDP and CDP according to the BCF process, the spinneret orifices on the spinneret plate are changed into trilobal from circular, circular blowing cooling is adopted, and the arrangement of the trilobal spinneret orifices on the spinneret plate is controlled to meet certain conditions, so that carpet yarn is prepared;
the length ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.5-2.5, the three leaves are the same in width, the ratio of the length of the shortest leaf to the width of the shortest leaf is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest blade of each trilobal spinneret orifice passes through the circle center and points away from the circle center.
2. The method for preparing a household carpet as claimed in claim 1, wherein the polyester base fabric is composed of PET DTY filaments and low-melting-point polyester fibers in a mass ratio of 8:2, and the melting point of the low-melting-point polyester fibers is 110-120 ℃.
3. The method of claim 1, wherein the ECDP to CDP ratio is 50: 50.
4. The method for preparing a household carpet as claimed in claim 1, wherein in the ECDP preparation process, the SIPA dosage is 1.2-2.5 mol% of the PTA dosage, and the PEG dosage is 10-15 wt% of the PTA dosage; in the preparation process of the CDP, the feeding amount of the SIPA is 1.2-2.5 mol% of the feeding amount of the PTA.
5. The preparation method of the household carpet as claimed in claim 4, wherein the intrinsic viscosity of ECDP is 0.60-0.65 dL/g, and the temperature of a spinning box corresponding to ECDP is 268-272 ℃; the intrinsic viscosity of the CDP is 0.70-0.75 dL/g, and the temperature of a spinning box body corresponding to the CDP is 282-285 ℃.
6. The method for preparing a household carpet as claimed in claim 5, wherein the BCF process comprises the following steps: extrusion → circular air cooling → oiling → stretching → deformation → network → curling;
parameters of the BCF process are as follows: the spinning temperature is 275-280 ℃, the cooling temperature is 20-25 ℃, the pre-stretching roller temperature is 80-85 ℃, the stretching roller temperature is 150-165 ℃, the stretching ratio is 3.0-3.3, the deformation box temperature is 173-190 ℃, the deformation box pressure is 7.0-8.1 bar, and the winding speed is 1440-1580 m/min.
7. The method as claimed in claim 6, wherein the carpet yarn has a three-dimensional crimp shape and is composed of a plurality of ECDP/CDP sheath-core composite monofilaments having a trefoil cross-section, an imaginary circle is drawn around the center of the trefoil, the portion of the trefoil coinciding with the imaginary circle is the core layer, and the remaining portion is the sheath layer.
8. The method of claim 7, wherein the carpet yarn has a crimp shrinkage of 42.1-48.3% and a crimp stability of 71.9-83.7%.
9. The method for preparing a home carpet as claimed in claim 7, wherein the carpet yarn has a breaking strength of 2.5cN/dtex or more, an elongation at break of 30.5 ± 5.0%, and a total fineness of 700 to 1000 dtex.
10. The method for preparing a home carpet as claimed in claim 1, wherein the home carpet has a grammage of 500-1000 g/m2The compressibility is 43-46%, and the compression resilience is more than or equal to 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911386338.4A CN111041732B (en) | 2019-12-29 | 2019-12-29 | Preparation method of household carpet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911386338.4A CN111041732B (en) | 2019-12-29 | 2019-12-29 | Preparation method of household carpet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111041732A true CN111041732A (en) | 2020-04-21 |
| CN111041732B CN111041732B (en) | 2022-01-28 |
Family
ID=70241257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911386338.4A Active CN111041732B (en) | 2019-12-29 | 2019-12-29 | Preparation method of household carpet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111041732B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1071364A (en) * | 1975-07-18 | 1980-02-12 | Badische Canada Limited | Trilobal synthetic textile filament |
| CN1084119A (en) * | 1992-05-01 | 1994-03-23 | 赫希斯特人造丝公司 | A kind of tufteds |
| CN101078182A (en) * | 2006-05-22 | 2007-11-28 | 约翰斯曼维尔公司 | Carpet primary backing having enhanced tufting and tuft securing characteristics |
| CN102660820A (en) * | 2012-05-11 | 2012-09-12 | 常州灵达特种纤维有限公司 | Special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and preparation method thereof |
| CN104662223A (en) * | 2012-07-26 | 2015-05-27 | 博纳有限公司 | Primary carpet backing and tufted carpet comprising the same |
| CN106400166A (en) * | 2016-08-31 | 2017-02-15 | 江苏恒力化纤股份有限公司 | Porous super-bright trilobal profiled polyester fiber and production method thereof |
| CN106400179A (en) * | 2016-08-31 | 2017-02-15 | 浙江盛元化纤有限公司 | Preparation method of lodging-resistant multi-difference polyester low-elastic filament |
| CN107208364A (en) * | 2014-11-11 | 2017-09-26 | 洛博纳有限公司 | For the former carpet backing without latex tufted carpet |
-
2019
- 2019-12-29 CN CN201911386338.4A patent/CN111041732B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1071364A (en) * | 1975-07-18 | 1980-02-12 | Badische Canada Limited | Trilobal synthetic textile filament |
| CN1084119A (en) * | 1992-05-01 | 1994-03-23 | 赫希斯特人造丝公司 | A kind of tufteds |
| CN101078182A (en) * | 2006-05-22 | 2007-11-28 | 约翰斯曼维尔公司 | Carpet primary backing having enhanced tufting and tuft securing characteristics |
| CN102660820A (en) * | 2012-05-11 | 2012-09-12 | 常州灵达特种纤维有限公司 | Special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and preparation method thereof |
| CN104662223A (en) * | 2012-07-26 | 2015-05-27 | 博纳有限公司 | Primary carpet backing and tufted carpet comprising the same |
| CN107208364A (en) * | 2014-11-11 | 2017-09-26 | 洛博纳有限公司 | For the former carpet backing without latex tufted carpet |
| CN106400166A (en) * | 2016-08-31 | 2017-02-15 | 江苏恒力化纤股份有限公司 | Porous super-bright trilobal profiled polyester fiber and production method thereof |
| CN106400179A (en) * | 2016-08-31 | 2017-02-15 | 浙江盛元化纤有限公司 | Preparation method of lodging-resistant multi-difference polyester low-elastic filament |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111041732B (en) | 2022-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106149071B (en) | Compound parallel type is from Curl staple fiber and production method outside two-component spinneret | |
| CN110088365B (en) | Eccentric core-sheath composite fiber and combined filament yarn | |
| CN107043969B (en) | A kind of ring ingot compound spinning method of type film wire | |
| JP6507156B2 (en) | Method of producing fiber, and fiber and yarn produced from the fiber | |
| CN103437018B (en) | A kind of production technology of super emulation silk type brocade ammonia air-coating silk | |
| CN110552096B (en) | One-step production process of high-strength high-shrinkage combined filament yarn | |
| CN102995146B (en) | Method for manufacturing fine denier porous light interlaced nylon 6 high stretch yarns | |
| CN107059186B (en) | A kind of vortex compound spinning method of type film wire | |
| CN106917166B (en) | A kind of friction compound spinning method of type film wire | |
| KR102611708B1 (en) | Bulkisa | |
| CN109023564B (en) | Preparation method of polylactic acid colored short fibers | |
| CN109234820A (en) | A kind of preparation method of polylactic acid short-fiber | |
| CN111630216B (en) | Polyamide multifilament and lace knitted fabric using same | |
| CN107012555A (en) | A kind of resultant yarn method of type film silkization | |
| CN108342795B (en) | Short-process yarn forming method for ultrashort difficult-to-spin fibers | |
| CN111041732B (en) | Preparation method of household carpet | |
| CN110079903B (en) | Preparation method and application of continuous long-line high-count yarn of electrospun nylon nanofiber | |
| JP2022552439A (en) | Composite crimped fiber used for knitted fabric and method for producing the same | |
| CN208118603U (en) | A kind of antibacterial thermal insulating cashmere-like fabric | |
| CN111041653B (en) | Preparation method of heat-resistant canvas | |
| CN108728970A (en) | A kind of polyamide fibre strand is twisted together the complex yarn and preparation method thereof of short rayon fiber yarn | |
| TWI793386B (en) | Polyamide multifilament and covered elastic yarn | |
| CN111041580B (en) | PET/PBT (polyethylene terephthalate/polybutylene terephthalate) same-plate mixed filament yarn and preparation method thereof | |
| CN111118665B (en) | Polyester-nylon composite yarn and preparation method thereof | |
| CN111118916B (en) | Preparation method of carpet for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |