NL2019933B1 - An environmentally friendly modified polyester fiber and a preparation method thereof - Google Patents
An environmentally friendly modified polyester fiber and a preparation method thereof Download PDFInfo
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- NL2019933B1 NL2019933B1 NL2019933A NL2019933A NL2019933B1 NL 2019933 B1 NL2019933 B1 NL 2019933B1 NL 2019933 A NL2019933 A NL 2019933A NL 2019933 A NL2019933 A NL 2019933A NL 2019933 B1 NL2019933 B1 NL 2019933B1
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- 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]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Knitting Of Fabric (AREA)
Abstract
The present invention relates to an environmentally friendly modified polyester fiber and a preparation method thereof, and more particularly to an economically advantageous and environmentally friendly modified polyester fiber which can replace acrylic for producing knitted products and a preparation method thereof. The environmentally friendly modified polyester fiber comprises modified polyester and recycled polyester flakes; it can be used as an alternative to acrylic, which has the same product characteristics as acrylic. The method for preparing an environmentally friendly modified polyester fiber according to the invention comprises the following steps: 1) copolymerizing and drying the modified polyester particles with the recycled polyester flakes; 2) obtaining environmentally friendly modified polyester staple fiber by extrusion spinning process; 3) obtaining environmentally friendly modified polyester yarn after conventional spinning process.
Description
An environmentally friendly modified polyester fiber and a preparation method thereof
Field of the invention
The present invention relates to an environmentally friendly modified polyester fiber and a preparation method thereof, in particular to an economically advantageous and environmentally friendly modified polyester fiber which can replace acrylic for producing knitted products and a preparation method thereof
Background art
The textile industry is one of the world's largest polluters. Over the years, large retailers and brands have begun to take on their responsibility to mitigate this pollution. Based on this mindset, the textile industry began to introduce different types of environmentally friendly and recyclable yams and fabrics, such as organic cotton (no chemicals added at the time of planting, such as fertilizers and pesticides) and recycled polyester (derived from a plastic / PET bottle). In the past few years, the use of environmentally friendly and recycled yarns and fabrics by the textile industry has increased significantly.
Acrylic is the most popular and cheap woolen substitute for the textile industry, because it has the same product characteristics as wool, such as: fluffy, light, soft, breathable, elastic and warm. It is for this reason that acrylic is used by the textile industry to produce almost all knitwear, including but not limited to scarves, hats, sweaters, gloves. However, in the textile industry there is not an environmentally friendly alternative to acrylic, which alternative can have the same feel as acrylic, and being flexible and economical.
Acrylic is produced from petrochemical products, the preparation process requires a lot of water. As indicated in the life cycle assessment by the Textile Exchange (a non-profit organization dedicated to expanding agricultural sustainable development, especially in the production and use of organic cultivation), acrylic is one of the worst yarns used in the textile industry. As is generally accepted in this industry, the impact of a material can be calculated by comparing the energy consumption of different yarns, the consumption of water, and the calculation of greenhouse gases.
The following overview shows directly the life cycle assessment data of acrylic, polyester, and from the Textile Exchange. The data show that, compared to polyester, acrylic has an even worse impact on the environment. Compared to polyester, the savings of recycled polyester has a more significant meaning.
| Per kilogram of fiber | Energy (MJ) | Water (L) | Waste (Kg) | Greenhouse gas (kg CO 2) |
| Acrylic | 379.0 | 151.1 | 1.2 | 16.9 |
| Polyester | 138.0 | 60.0 | 0.35 | 15.0 |
| Manually recycled bottle | 52.0 | 0.44 | 0.23 | 12.5 |
| Chemically recycled polyester | 79.0 | 0.41 | 0.28 | 14.3 |
The results of the life cycle assessment issued by the Ministry of Environment, Food and Rural Affairs and the Food and Environmental Research Agency, the University of Leicester Montfort, and the University of Leeds show similar results. The study of the Center for Marine Biology and Ecology of the School of Marine Science and Engineering at the University of Plymouth shows that acrylic releases more microplastic contamination into the environment than polyester. Based on each wash of 6 kg to estimate the fiber release amount, for acrylic the amount is 728,789 fibers, for polyester the amount is 496,030 fibers.
The globally 25,000 tons of acrylic are produced annually, the impact on the environment is enormous. As the acrylic after recycle will lose its product characteristics, and can only restore by adding new chemicals, thus recycled acrylic cannot be used as a conventional acrylic alternative.
Summary of the invention
For the current use of fiber and yam in the textile industry, acrylic is one of the most polluting material and it is hard to find alternatives at the moment,
According to a first aspect, the invention provides an economically advantageous and environmentally friendly modified polyester fiber which has the same characteristics as acrylic and can be used as an economically advantageous and environmentally friendly alternative to acrylic.
In an embodiment, said environmentally friendly modified polyester fiber comprises a modified polyester and a recycled polyester (RPET).
In an embodiment, said modified polyester fiber comprises the modified polyester with a mass percentage between 45% and 55%, the recycled polyester flakes with a mass percentage between 55% and 45%.
According to another aspect, the invention provides a method for preparing an environmentally friendly modified polyester fiber, comprising the steps of:
1) Copolymerizing and drying modified polyester particles with the recycled polyester flakes (RPET);
2) obtaining environmentally friendly modified polyester staple fiber by extrusion spinning process;
3) obtaining environmentally friendly modified polyester yarn after conventional spinning process.
In an embodiment, the modified polyester particles of said step 1) comprise Easy Cationic Dyeable Polyester (ECDP) particles; said ECDP particles are prepared by adding a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and further adding a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics.
In an embodiment, the recycled polyester flakes of said step 1) are prepared from a recycled plastic bottle.
In an embodiment, the ratio of the components of the modified polyester particles to the recycled polyester flakes of said step 1) is in mass percent, and the modified polyester particles between 45-55%, and the recycled polyester flakes between 55-45%.
In an embodiment, the spinning process of said step 2) is carried out by meltspinning the modified polyester particles with the recycled polyester flakes in a screw fuse, with a melting temperature between 225-255 ° C, a spinning speed between 80-100 m / min, a draft temperature between 65-70 ° C, and a draw ratio between 3-4 times.
In an embodiment, a extrusion spinning process of said step 2 comprises a prespinning process and a post-spinning process; the pre-spinning process comprising subsequently screw melt-spinning, winding oil, fllamentation; the post-spinning process comprising subsequently bundling, guiding, drawing, stacking, curling, loose heatsetting, and cutting.
In an embodiment, the spinning process of said step 3 comprises adding other staple fibers for blended spinning; the other staple fibers comprising at least one of organic cotton, recycled cotton, acrylic, recycled polyester, Tencel fibers, recycled wool, wool, rayon fiber, nylon, recycled nylon, and linen.
In an embodiment, in the step 3), the environmentally friendly modified polyester yarn, after atmospheric boiling coloration, obtains a dyed environmentally friendly modified polyester yarn, with a dye rate above 95%, and an atmospheric boiling coloration temperature between 95-100 0 C.
In the present invention, the modified polyester yam is clearly defined as an environmentally friendly alternative to acrylic.
The present invention relates to an environmentally friendly modified polyester fiber, which is an alternative to acrylic, can be used in knitting garments or / and knitted accessories in the textile industry. In particular, the modified polyester yarn can be used as an alternative to acrylic, which can be used in knitting garments or / and knitted accessories in the textile industry. The environmentally friendly fibers designed and prepared according to the present invention have the same product characteristics as those of acrylic, such as having a fluffy feeling, and having characteristics of light, soft, breathable, elastic and warm etc.
Technical advantage
The environmentally friendly modified polyester fiber prepared by the method of the present invention has the same product characteristics as the acrylic (fluffy feeling, very light, soft, breathable, good elasticity and warm), the difference from the acrylic is that it is made from polyester and recycled plastic bottle, so it is economically advantageous and environmentally friendly.
Short description of drawings
Figure 1 schematically shows a production process of preparing modified polyester staple fiber and yarn according to an embodiment of the present invention.
Figure 2 schematically shows an extrusion spinning process for modified polyester staple fibers according to an embodiment of the present invention.
Figure 3 shows a knitted fabric No. 3 obtained from Example 3.
Description of embodiments
Fig. 1 schematically shows a production process of preparing modified polyester staple fiber and yam. The modified polyester staple fiber is called Polylana® fiber, made from recycled polyester flakes retrieved from used polyester (PET) bottles, and customized bicomponent polyester pellets. To create this Polylana® fiber, 45-55 wt% customized bicomponent polyester pellets (made by polymerized chemicals) are melted with 55-45 wt% recycled rPET flakes (made from Recycled Polyester bottles).
When the polyester pellets, and recycled polyester flakes have been melted, new modified polyester staple fibers have been created by the extruding process. After the extruding process, these modified polyester staple fibers can be blended with other staple fibers, like (organic or recycled) cotton, acrylic, rPET, Tencel®, (recycled) wool, hemp, etc. After the regular spinning process, it results in the polylana® yarn (blended or nonblended).
A difference with the acrylic fiber is the fact that this Polylana® fiber has the same product characteristics as Acrylic, but made by (recycled) polyester which result in a significant environmental saving. Currently, on the market there is no modified polyester- and recycled polyester fiber/yam available which can be used to produce knitwear by the textile industry.
Another benefit of the Polylana® fiber is the fact that this fiber can be dyed at low temperature which results in another significant environmental energy saving. Next to this, this fiber is also applicable for the spun-dye technology (dying without water use) which means another significant water saving.
Fig. 2 schematically shows an extrusion spinning process for the modified polyester staple fibers. The extrusion spinning process comprising a pre-spinning process and a post-spinning process. The steps are shown in Fig. 2
Example 1 wt% of the polyester particles (or pellets) were blended, copolymerized and dried with 55 wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 225 ° C, a spinning speed of 80 m / min, a draft temperature of 65 ° C and a draw ratio of 3 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of recycled plastic (PET) bottle flakes.
wt% of said environmentally friendly modified polyester staple fibers were blended with 20 wt% of the recycled polyester and subjected to a conventional spinning process to obtain modified polyester yarns. Knitwear No. 1 was knitted by using modified polyester yarns.
In the Tables below, the number of stars corresponds to the performance of a particular knitwear.
Table 1: Performance indicators of knitwear No. 1
| Softness index | ☆ ☆☆ |
| Elasticity index | ☆ ☆☆ |
| Thermal isolation index | ☆☆☆ |
| Thickness index | ☆☆ |
| Breathability index | ☆ ☆☆☆ |
| Smoothness index | ☆ ☆☆ |
Example 2 wt% of the polyester particles (or pellets) were copolymerized and dried with wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 235 ° C, a spinning speed of 85 m / min, a draft temperature of 66 ° C and a draw ratio of 3.2 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of recycled plastic bottle flakes.
wt% of said environmentally friendly modified polyester staple fibers were blended with 20 wt% of Tencel fibers and subjected to a conventional spinning process to obtain modified polyester yarns. Knitwear No. 2 was knitted by using modified polyester yarns.
Table 2: Performance indicators of knitwear No. 2
| Softness index | ☆ ☆☆☆☆ |
| Elasticity index | ☆ ☆☆ |
| Thermal isolation index | ☆☆☆ |
| Thickness index | ☆ ☆ |
| Breathability index | ☆ ☆☆☆☆ |
| Smoothness index | ☆ ☆☆☆ |
Example 3 wt% of the polyester particles (or pellets) were copolymerized and dried with 50 wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 240 ° C, a spinning speed of 90 m / min, a draft temperature of 68 ° C and a draw ratio of 3.5 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of retrieved recycled plastic bottle flakes.
wt% of the said modified polyester staple fibers were blended with 50 wt% of acrylic and subjected to a conventional spinning process to obtain environmentally friendly modified polyester yams, which yams were subjected to atmospheric boiling coloration at 95 ° C. The environmentally friendly modified polyester yarn, after coloration, has a dye rate above 96%. Knitwear No. 3 was knitted by using dyed modified polyester yams.
Table 3: Performance indicators of knitwear No. 3
| Softness index | ☆☆☆☆ |
| Elasticity index | ☆☆☆☆ |
| Thermal isolation index | ☆ ☆☆☆ |
| Thickness index | ☆☆☆ |
| Breathability index | ☆☆☆ |
| Smoothness index | ☆ ☆☆ |
Example 4 wt% of the polyester particles (or pellets) were copolymerized and dried with 45 wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 250 ° C, a spinning speed of 95 m / min, a draft temperature of 69 ° C and a draw ratio of 3.8 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of recycled plastic bottle flakes.
wt% of said modified polyester staple fibers were blended with 20 wt% of wool and subjected to a conventional spinning process to obtain environmentally friendly modified polyester yarns. Knitwear No. 4 was knitted by using modified polyester yarns.
Table 4: Performance indicators of knitwear No. 4
| Softness index | ☆☆☆☆☆ |
| Elasticity index | ☆ ☆☆☆☆ |
| Thermal isolation index | ☆ ☆☆☆☆ |
| Thickness index | ☆ ☆☆☆ |
| Breathability index | ☆☆☆ |
| Smoothness index | ☆ ☆☆ |
Example 5 wt% of the polyester particles (or pellets) were copolymerized and dried with 50 wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 255 ° C, a spinning speed of 100 m / min, a draft temperature of 70 ° C and a draw ratio of 4 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of recycled plastic bottle flakes.
wt% of the said modified polyester staple fibers were blended with 20 wt% of cotton and subjected to a conventional spinning process to obtain environmentally friendly modified polyester yams, which yarns were subjected to atmospheric boiling coloration at 100 ° C. The environmentally friendly modified polyester yarn, after coloration, has a dye rate above 97%. Knitwear No. 5 was knitted by using dyed modified polyester yarns.
Table 5: Performance indicators of knitwear No. 5
| Softness index | ☆ ☆☆☆ |
| Elasticity index | ☆ ☆☆ |
| Thermal isolation index | ☆☆☆☆ |
| Thickness index | ☆ ☆☆ |
| Breathability index | ☆ ☆☆☆ |
| Smoothness index | ☆ ☆☆ |
Comparative Example 1 wt% of the polyester particles (or pellets) were copolymerized and dried with 50 wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 225 ° C, a spinning speed of 80 m / min, a draft temperature of 65 ° C and a draw ratio of 3 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of recycled plastic bottle flakes.
wt% of said modified polyester staple fibers were blended with 80 wt% of recycled polyester and subjected to a conventional spinning process to obtain environmentally friendly modified polyester yarns. Knitwear No. 6 was knitted by using modified polyester yarns.
Table 6 Performance indicators of knitwear No. 6
| Softness index | ☆☆ |
| Elasticity index | ☆ ☆ |
| Thermal isolation index | ☆ ☆ |
| Thickness index | ☆☆ |
| Breathability index | ☆☆ |
| Smoothness index | ☆ ☆☆ |
Comparative Example 2 wt% of the polyester particles (or pellets) were copolymerized and dried with 50 wt% recycled polyester flakes (RPET) and then placed in a screw fuse, and an environmentally friendly polyester staple fiber was obtained by an extrusion spinning process. The spinning process has a melting temperature of 255 ° C, a spinning speed of 100 m / min, a draft temperature of 70 ° C and a draw ratio of 4 times.
Said polyester particles are prepared by adding a high amount of a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and 5 based on this, further adding a certain amount of a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics, obtaining Easy Cationic Dyeable Polyester (ECDP) particles. Said recycled polyester flakes (RPET) are obtained from cleaning, drying, and removing impurity of recycled plastic bottle flakes.
wt% of said modified polyester staple fibers were blended with 80 wt% of cotton and subjected to a conventional spinning process to obtain environmentally friendly modified polyester yarns. Knitwear No. 7 was knitted by using modified polyester yarns.
Table 7 Performance indicators of knitwear No. 7
| Softness index | ☆ ☆ |
| Elasticity index | ☆ ☆ |
| Thermal isolation index | ☆☆☆ |
| Thickness index | ☆☆☆ |
| Breathability index | ☆ ☆☆☆☆ |
| Smoothness index | ☆ ☆☆ |
Claims (7)
- P6071221NL - Amended claims (clean version) - 2018.12.071. A method for preparing an environmentally friendly modified polyester fiber, characterized in that the method comprises the steps of:copolymerizing and drying modified polyester particles with recycled polyester flakes;obtaining environmentally friendly modified polyester staple fiber by extrusion spinning process;obtaining environmentally friendly modified polyester yam after conventional spinning process wherein a ratio of the components of the modified polyester particles to the recycled polyester flakes is in mass percent, and the modified polyester particles are between 45% and 55%, and the recycled polyester flakes are between 55% and 45%.wherein the modified polyester particles comprise Easy Cationic Dyeable Polyester (ECDP) particles; said ECDP particles are prepared by adding a third monomer comprising a sulfonic acid group during conventional polyester polymerization, and further adding a fourth monomer comprising polyethylene glycol for copolymerization and modifying characteristics;wherein the environmentally friendly modified polyester fiber comprises a fluffy feeling of acrylic.
- 2. The method for preparing the environmentally friendly modified polyester fiber according to claim 1, characterized in that the recycled polyester flakes are prepared from a recycled plastic bottle.
- 3. The method for preparing the environmentally friendly modified polyester fiber according to claim 1, characterized in that in the step 2), the extrusion spinning process is carried out by melt-spinning the modified polyester particles with the recycled polyester flakes in a screw fuse, with a melting temperature between 225-255 ° C, a spinning speed between 80-100 m / min, a draft temperature between 65-70 ° C, and a draw ratio between 3-4 times.
- 4. The method for preparing the environmentally friendly modified polyester fiber according to claim 1, characterized in that in the step 2), the extrusion spinning process comprising a pre-spinning process and a post-spinning process; the prespinning process comprising subsequently screw melt-spinning, winding oil, fllamentation; the post-spinning process comprising subsequently bundling, guiding, drawing, stacking, curling, loose heat-setting, and cutting.
- 5. The method for preparing the environmentally friendly modified polyester fiber according to claim 1, characterized in that in the spinning process of the step 3), adding other staple fibers for blended spinning; the other staple fibers comprising at least one of organic cotton, recycled cotton, acrylic, recycled polyester, Tencel fibers, recycled wool, wool, rayon fiber, nylon, recycled nylon, and linen.
- 6. The method for preparing the environmentally friendly modified polyester fiber according to claim 1, characterized in that in the step 3), the environmentally friendly modified polyester yarn, after atmospheric boiling coloration, obtaining a dyed environmentally friendly modified polyester yam, with a dye rate above 95%, and an atmospheric boiling coloration temperature between 95-100 ° C.
- 7. An environmentally friendly modified polyester fiber, characterized in that the environmentally friendly modified polyester fiber comprises modified polyester with a mass percentage between 45% and 55%, and recycled polyester flakes with a mass percentage between 55% and 45%, wherein the environmentally friendly modified polyester fiber comprises a fluffy feeling of acrylic.
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| CN201710433783.6A CN107287693A (en) | 2017-06-09 | 2017-06-09 | A kind of environment protection modification polyester fiber and preparation method thereof |
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| CN115976688B (en) * | 2022-12-30 | 2023-10-24 | 上海德福伦新材料科技有限公司 | Preparation method of cationic dye normal-pressure deeply-dyeable fine denier regenerated polyester fiber |
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| CN102704032B (en) * | 2012-06-19 | 2013-09-25 | 扬州思窈化纤有限公司 | Production process of cationic regenerative colored polyester staple fiber |
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