CN114908435A - Production process of environment-friendly degradable automotive interior - Google Patents
Production process of environment-friendly degradable automotive interior Download PDFInfo
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- CN114908435A CN114908435A CN202210723263.XA CN202210723263A CN114908435A CN 114908435 A CN114908435 A CN 114908435A CN 202210723263 A CN202210723263 A CN 202210723263A CN 114908435 A CN114908435 A CN 114908435A
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- polylactic acid
- fiber
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 119
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 119
- 239000004626 polylactic acid Substances 0.000 claims abstract description 119
- 238000009987 spinning Methods 0.000 claims abstract description 45
- 229920000742 Cotton Polymers 0.000 claims description 62
- 238000000034 method Methods 0.000 claims description 41
- 238000009960 carding Methods 0.000 claims description 35
- 238000007664 blowing Methods 0.000 claims description 33
- 238000002156 mixing Methods 0.000 claims description 21
- 239000012535 impurity Substances 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 238000009940 knitting Methods 0.000 claims description 13
- 238000005034 decoration Methods 0.000 claims description 8
- 229920004933 Terylene® Polymers 0.000 claims description 7
- 238000010035 extrusion spinning Methods 0.000 claims description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 abstract description 2
- 229920002988 biodegradable polymer Polymers 0.000 abstract description 2
- 239000004621 biodegradable polymer Substances 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000004745 nonwoven fabric Substances 0.000 abstract description 2
- 230000009965 odorless effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 238000012857 repacking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- 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
- D01D5/08—Melt spinning methods
-
- 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
- D01D5/12—Stretch-spinning methods
-
- 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
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- 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
- D10B2401/00—Physical properties
- D10B2401/12—Physical properties biodegradable
-
- 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
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
-
- 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
- D10B2401/14—Dyeability
-
- 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
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a production process of an environment-friendly degradable automobile interior, which comprises the following steps: (1) producing polylactic acid fiber; (2) spinning polylactic acid fibers; (3) and (5) manufacturing the automotive interior. The production process of the environment-friendly degradable automotive interior adopts polylactic acid fiber, the polylactic acid fiber is a completely biodegradable polymer, has excellent performance, can be prepared into products such as filaments, staple fibers, monofilaments and non-woven fabrics, and is a successful commercial environment-friendly fiber. The polylactic acid fiber can resist the growth of bacteria, and is a novel fiber which is odorless, mildewproof and good in dyeability; the polylactic acid fiber has good rebound resilience of 93 percent under the action of 5 percent strain, has good water diffusion performance, can be quickly absorbed and quickly dried, and the automotive trim made of the polylactic acid fiber has all the excellent properties of the polylactic acid fiber, and the discarded automotive trim cannot damage the environment.
Description
Technical Field
The invention relates to the technical field of automobile interior trim production, in particular to a production process of an environment-friendly degradable automobile interior trim.
Background
Automotive interior mainly indicates the automobile product that the inside repacking of car used, involves the square face of car inside, for example car steering wheel cover, car cushion, car callus on the sole, car perfume, car pendant, inside goods of furniture for display rather than for use, containing box etc. all are automotive interior products.
The automobile interior decoration is actually in the Interiors System in English. Because this part of the automobile part has a certain decorative effect, the translation is commonly called "automobile interior trim" in the industry. The parts have not only decorative effect, but also rich functionality, safety and engineering properties. Automotive interior mainly indicates the automobile product that the inside repacking of car used, involves the square face of car inside, for example car steering wheel cover, car cushion, car callus on the sole, car perfume, car pendant, inside goods of furniture for display rather than for use, containing box etc. all are automotive interior products.
Most of raw materials used in the production of automobile interiors in the market at present cannot be recycled and naturally degraded, and some automobile interiors dismantled from the interior of automobiles cannot be recycled and are inevitably damaged to the environment after being discarded, so that an environment-friendly and degradable production process of the automobile interiors is provided so as to solve the problems.
Disclosure of Invention
The invention aims to provide a production process of an environment-friendly degradable automotive interior, which aims to solve the problems that most of raw materials used in the production of the automotive interior on the market cannot be recycled and naturally degraded, some automotive interiors detached from the interior of an automobile cannot be recycled, and the environment is inevitably damaged after the automotive interiors are discarded.
In order to achieve the purpose, the invention provides the following technical scheme: the production process of the environment-friendly degradable automobile interior trim comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying the polylactic acid, putting the dried polylactic acid into a screw melting machine for extrusion spinning, keeping the speed at 1800-2000 r/min during spinning, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce the polylactic acid fiber;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a scutcher, and mechanically mixing, opening and removing impurities in the polylactic acid fiber by the scutcher;
s2, carding: putting the polylactic acid fiber subjected to the blowing and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber;
s5, spun yarn: carrying out a spinning process on the yarn manufactured after the roving process is finished;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
Preferably, the polylactic acid used in the step (1) is a polylactic acid having a molecular weight of 33 ten thousand, a melting point of about 186 ℃, and a crystallinity of about 75%, and the temperature of the nascent fiber is increased to 160 ℃ when the nascent fiber is subjected to hot drawing.
Preferably, the temperature of the environment in the blowing process in the step (2) is kept between 23 and 25 ℃ during work, the relative humidity is kept between 50 and 60 percent, and the speed of the blowing machine is kept slower during operation.
Preferably, the distance between every two parts in the cotton carding process in the step (2) is larger, the cotton carding needles are produced by adopting a process similar to that of terylene, the cotton carding needles have the sizes exposed to the bottom, and the cotton nets are clear and uniform and have no neps.
Preferably, in the roving step in the step (2), the spinning tension is slightly small during spinning, the drafting multiple of the rear zone is 1.20-1.50, the interval of the drafting zones is 25-35, and the roving twist factor is 65-70.
Preferably, in the spinning step (2), the yarn twisting coefficient of the knitting yarn is 350, and the knitting yarn is about 370-380.
Compared with the prior art, the invention has the beneficial effects that: the production process of the environment-friendly degradable automotive interior adopts polylactic acid fiber, the polylactic acid fiber is a completely biodegradable polymer, has excellent performance, can be prepared into products such as filaments, staple fibers, monofilaments and non-woven fabrics, and is a successful commercial environment-friendly fiber. The polylactic acid fiber can resist the growth of bacteria, and is a novel fiber which is odorless, mildewproof and good in dyeability; the polylactic acid fiber has good rebound resilience of 93 percent under the action of 5 percent strain, has good water diffusion performance, can be quickly absorbed and quickly dried, and the automotive trim made of the polylactic acid fiber has all the excellent properties of the polylactic acid fiber, and the discarded automotive trim cannot damage the environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The production process of the environment-friendly degradable automobile interior trim comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying polylactic acid, putting the dried polylactic acid into a screw melting machine for extrusion spinning, keeping the speed at 1800-2000 r/min during spinning, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce polylactic acid fiber, wherein the used polylactic acid adopts polylactic acid with the molecular weight of 33 ten thousand, the melting point of about 186 ℃ and the crystallinity of about 75 percent, and the temperature is increased to 160 ℃ during thermally stretching the nascent fiber;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a blowing machine, mechanically mixing the raw materials by the blowing machine, opening and removing impurities in the polylactic acid fiber, wherein the environmental temperature is kept at 23-25 ℃ in the blowing process, the relative humidity is kept at 50-60%, and the speed of the blowing machine is kept slower in the operation process;
s2, carding: putting the polylactic acid fiber after the cotton cleaning and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy, wherein the intervals among all parts in the cotton carding process are larger, cotton carding needles are produced by adopting a process similar to that of terylene, the sizes of the cotton carding needles are exposed, and the cotton nets are clear and uniform and have no neps;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber, wherein the spinning tension in the roving process is smaller during spinning, the drafting multiple of a rear zone is 1.20-1.50, the interval of the drafting zones is 25-35, and the roving twist coefficient is 65-70;
s5, spun yarn: carrying out a spinning process on the yarn made after the roving process is finished, wherein the spinning process selects the yarn twisting coefficient of the knitting yarn to be 350 and the knitting yarn to be about 370-380;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
Example two
The production process of the environment-friendly degradable automobile interior trim comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying polylactic acid, putting the dried polylactic acid into a screw melting machine for extrusion spinning, keeping the speed of the spinning at 1800r/min, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce polylactic acid fiber, wherein the used polylactic acid adopts polylactic acid with the molecular weight of 33 ten thousand, the melting point of about 186 ℃ and the crystallinity of about 75 percent, and the temperature of the nascent fiber is raised to 160 ℃ during thermal stretching;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a blowing machine, mechanically mixing, opening and removing impurities in the polylactic acid fiber by the blowing machine, wherein the environmental temperature is kept at 25 ℃ in the blowing process, the relative humidity is kept at 60%, and the speed of the blowing machine is kept slower in operation;
s2, carding: putting the polylactic acid fiber after the cotton cleaning and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy, wherein the intervals among all parts in the cotton carding process are larger, cotton carding needles are produced by adopting a process similar to that of terylene, the sizes of the cotton carding needles are exposed, and the cotton nets are clear and uniform and have no neps;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber, wherein the spinning tension in the roving process is smaller during spinning, the drafting multiple of a rear zone is 1.50, the interval of the drafting zones is 35, and the roving twist coefficient is 70;
s5, spun yarn: performing a spinning process on the yarn made after the roving process is finished, wherein the spinning process selects the knitting yarn with the yarn twisting coefficient of 350 and the knitting yarn of about 370;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
EXAMPLE III
The production process of the environment-friendly degradable automobile interior trim comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying polylactic acid, putting the dried polylactic acid into a screw melting machine for extrusion spinning, keeping the speed at 2000r/min during spinning, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce polylactic acid fiber, wherein the used polylactic acid adopts polylactic acid with the molecular weight of 33 ten thousand, the melting point of about 186 ℃ and the crystallinity of about 75 percent, and the temperature is raised to 160 ℃ during thermally stretching the nascent fiber;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a blowing machine, mechanically mixing the raw materials by the blowing machine, opening and removing impurities in the polylactic acid fiber, wherein the environmental temperature is kept at 40 ℃ and the relative humidity is kept at 85% in the blowing process, and the speed of the blowing machine is kept slower in operation;
s2, carding: putting the polylactic acid fiber subjected to blowing and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy, wherein the spacing between all parts in the cotton carding process is larger, cotton carding needles are produced by adopting a process similar to that of terylene, the size of the cotton carding needles is exposed, and a cotton web is clear and uniform and has no neps;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber, wherein the spinning tension in the roving process is smaller during spinning, the drafting multiple of a rear area is 2.00, the interval of the drafting areas is 15, and the roving twist coefficient is 50;
s5, spinning: performing a spinning process on the yarn produced after the roving process is finished, wherein the spinning process selects the knitting yarn with the yarn forming twist coefficient of 280 and the knitting yarn of about 410;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
Example four
The production process of the environment-friendly degradable automobile interior trim comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying polylactic acid, putting the dried polylactic acid into a screw rod melting machine for extrusion spinning, keeping the speed at 1500r/min during spinning, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce polylactic acid fiber, wherein the used polylactic acid adopts polylactic acid with the molecular weight of 33 ten thousand, the melting point of about 190 ℃ and the crystallinity of about 75 percent, and the temperature is raised to 170 ℃ during thermally stretching the nascent fiber;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a blowing machine, mechanically mixing the raw materials by the blowing machine, opening and removing impurities in the polylactic acid fiber, wherein the environmental temperature is kept at 30 ℃ and the relative humidity is kept at 40% in the blowing process, and the speed of the blowing machine is kept slower in operation;
s2, carding: putting the polylactic acid fiber after the cotton cleaning and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy, wherein the intervals among all parts in the cotton carding process are larger, cotton carding needles are produced by adopting a process similar to that of terylene, the sizes of the cotton carding needles are exposed, and the cotton nets are clear and uniform and have no neps;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber, wherein the spinning tension in the roving process is smaller during spinning, the drafting multiple of a rear zone is 1.10, the interval of the drafting zones is 40, and the roving twist coefficient is 80;
s5, spinning: carrying out a spinning process on the yarn made after the roving process is finished, wherein the spinning process selects the knitting yarn with the yarn twisting coefficient of 360 and the weaving yarn of about 400;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
EXAMPLE five
The production process of the environment-friendly degradable automobile interior trim comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying polylactic acid, putting the dried polylactic acid into a screw rod melting machine for extrusion spinning, keeping the speed at 1500r/min during spinning, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce polylactic acid fiber, wherein the used polylactic acid adopts polylactic acid with the molecular weight of 33 ten thousand, the melting point of about 150 ℃ and the crystallinity of about 60 percent, and the temperature is raised to 160 ℃ during thermally stretching the nascent fiber;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a blowing machine, mechanically mixing the raw materials by the blowing machine, opening and removing impurities in the polylactic acid fiber, wherein the environmental temperature is kept at 30 ℃ and the relative humidity is kept at 40% in the blowing process, and the speed of the blowing machine is kept slower in operation;
s2, carding: putting the polylactic acid fiber after the cotton cleaning and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy, wherein the intervals among all parts in the cotton carding process are larger, cotton carding needles are produced by adopting a process similar to that of terylene, the sizes of the cotton carding needles are exposed, and the cotton nets are clear and uniform and have no neps;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber, wherein the spinning tension in the roving process is smaller during spinning, the drafting multiple of a rear zone is 1.30, the interval of the drafting zones is 20, and the roving twist coefficient is 50;
s5, spun yarn: performing a spinning process on the yarn produced after the roving process is finished, wherein the spinning process selects the knitting yarn with the yarn forming twist coefficient of 280 and the knitting yarn of about 300;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The production process of the environment-friendly degradable automobile interior trim is characterized by comprising the following steps of: the method comprises the following steps:
(1) producing polylactic acid fiber: vacuum drying the polylactic acid, putting the dried polylactic acid into a screw melting machine for extrusion spinning, keeping the speed at 1800-2000 r/min during spinning, winding the obtained nascent fiber, and thermally stretching the wound nascent fiber to produce the polylactic acid fiber;
(2) polylactic acid fiber spinning
S1, blowing: putting the polylactic acid fiber prepared in the step (1) into a scutcher, and mechanically mixing, opening and removing impurities in the polylactic acid fiber by the scutcher;
s2, carding: putting the polylactic acid fiber after the cotton cleaning and impurity removal into a cotton carding device to enable the polylactic acid fiber to become more fluffy;
s3, drawing: the polylactic acid fiber is subjected to twice drawing operation, so that the polylactic acid fiber and the cotton fiber are more uniform in blending;
s4, roving: carrying out roving after blending polylactic acid fiber and cotton fiber;
s5, spun yarn: carrying out a spinning process on the yarn manufactured after the roving process is finished;
(3) manufacturing an automobile interior: the blended yarn of the polylactic acid fiber and the cotton fiber after being spun into the yarn is made into the automobile interior decoration corresponding to the requirement.
2. The process for producing an environmentally friendly degradable automotive interior according to claim 1, wherein: the polylactic acid used in the step (1) is polylactic acid with the molecular weight of 33 ten thousand, the melting point of about 186 ℃ and the crystallinity of about 75 percent, and the temperature is increased to 160 ℃ when the nascent fiber is subjected to hot stretching.
3. The process for producing an environmentally friendly degradable automotive interior according to claim 1, wherein: the environment temperature of the blowing process in the step (2) is kept at 23-25 ℃ during work, the relative humidity is kept at 50-60%, and the speed of the blowing machine is kept slower during operation.
4. The process for producing an environmentally friendly degradable automotive interior according to claim 1, wherein: the distance between every two parts in the cotton carding process in the step (2) is large, cotton carding needles are produced by a process similar to that of terylene, the cotton carding needles are large and small, the cotton nets are exposed, and the cotton nets are clear and uniform and have no neps.
5. The process for producing an environmentally friendly degradable automotive interior according to claim 1, wherein: in the roving process in the step (2), the spinning tension is smaller during spinning, the drafting multiple of a rear zone is 1.20-1.50, the interval of the drafting zones is 25-35, and the roving twist coefficient is 65-70.
6. The process for producing an environmentally friendly degradable automotive interior according to claim 1, wherein: in the spinning step in the step (2), the yarn twisting coefficient of the knitting yarn is 350, and the knitting yarn is about 370-380.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210723263.XA CN114908435A (en) | 2022-06-23 | 2022-06-23 | Production process of environment-friendly degradable automotive interior |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210723263.XA CN114908435A (en) | 2022-06-23 | 2022-06-23 | Production process of environment-friendly degradable automotive interior |
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| CN114908435A true CN114908435A (en) | 2022-08-16 |
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| CN202210723263.XA Pending CN114908435A (en) | 2022-06-23 | 2022-06-23 | Production process of environment-friendly degradable automotive interior |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008231583A (en) * | 2007-03-16 | 2008-10-02 | Toray Ind Inc | Doubled yarn, carpet, interior automotive trim and method for producing doubled yarn |
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| CN110747549A (en) * | 2019-11-14 | 2020-02-04 | 蚌埠民丰纺织有限责任公司 | Polylactic acid and tencel blended yarn and spinning method |
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2022
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| JP2008231583A (en) * | 2007-03-16 | 2008-10-02 | Toray Ind Inc | Doubled yarn, carpet, interior automotive trim and method for producing doubled yarn |
| CN101514507A (en) * | 2008-02-21 | 2009-08-26 | 东丽纤维研究所（中国）有限公司 | Textile for automobile and preparation method thereof |
| CN110629306A (en) * | 2019-08-14 | 2019-12-31 | 安徽桑尼旅游休闲用品有限公司 | Preparation method of degradable polylactic acid fiber |
| CN110747549A (en) * | 2019-11-14 | 2020-02-04 | 蚌埠民丰纺织有限责任公司 | Polylactic acid and tencel blended yarn and spinning method |
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