Oversized and high-flatness roller shutter fabric and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of an oversized and high-flatness roller shutter fabric, which comprises the following steps of: firstly, designing a 7 / 3-fly-warp double-faced satin weave by selecting specific raw materials, such as recycled polyester low stretch yarns and low-melting-point composite yarns with a skin-core layer structure; producing grey cloth by adopting a wide weaving technology; then the gray fabric is subjected to two times of heat treatment, namely pre-setting treatment and re-setting treatment, so that internal stress is eliminated, and the size is further stabilized; surface dirt is removed through water washing treatment, and defects are avoided; carrying out calendaring treatment to improve glossiness and smoothness; finally, baking treatment is conducted through a gradient heating method, it is ensured that hot melting bonding points of the fabric are evenly cooled and solidified, and the manufacturing process is completed. The oversized roller shutter fabric prepared by adopting the scheme is higher in flatness.

Description

Technical Field

[0001] The invention relates to the technical field of curtain fabrics, and in particular to an oversized and highly flat rolling curtain fabric and a manufacturing method thereof. Background Art

[0002] Roller blinds are a material commonly used for window shading and interior decoration. They can effectively block sunlight, prevent ultraviolet rays from entering the room, and protect furniture and floors from direct sunlight. In addition, by adjusting the height of the roller blinds, you can also control the degree of privacy in the room and prevent prying eyes from the outside. Roller blinds have heat insulation and thermal insulation functions. They can reduce the rise in indoor temperature in summer and keep warm in winter. Roller blinds are available in a variety of colors and patterns, and can be matched according to different interior decoration styles to beautify the space.

[0003] Due to the multiple functional advantages of roller blind fabrics, the demand for roller blind fabrics is increasing in the field of modern construction, especially in high-end hotels, government office buildings and large civil public places.

[0004] However, although traditional roller blind fabrics can meet the basic functions of sunshade and decoration, they have obvious deficiencies in size, flatness and environmental performance. The flatness of roller blind fabrics is also one of the important parameters for evaluating its quality, and the flatness directly affects the appearance and function of the roller blind. However, large-sized roller blind fabrics are often difficult to ensure flatness due to production process limitations, affecting the overall aesthetics and practical effects.

[0005] Therefore, there is an urgent need to develop an extra-large-size, ultra-flat roller blind fabric to meet the dual needs of sunshade function and visual presentation for large windows and public spaces. Summary of the invention

[0006] The technical problem to be solved by the present invention is that in response to the sunshade needs of large windows and public spaces, the oversized roller blind fabrics produced by the existing roller blind fabric manufacturing process have poor flatness and are difficult to meet the market demand for high-standard roller blind fabrics.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A method for manufacturing an oversized and highly flat roller blind fabric comprises the following process steps:

[0009] S1. Weaving of grey fabric

[0010] Raw material selection: the warp yarn is made of recycled polyester low-elastic yarn, and the weft yarn is made of sheath-core structured low-melting point composite yarn; the sheath layer of the sheath-core structured low-melting point composite yarn is made of low-melting point polyester fiber, and the core layer is conventional polyester fiber; the warp yarn accounts for 30% by weight; and the weft yarn accounts for 70% by weight.

[0011] Fabric structure design: Design 7-piece 3-fly double-sided satin structure, and set the ratio of surface diameter to inner warp to 1:1, so as to ensure the balanced and stable structure of the front and back sides of the fabric and maintain the same weaving shrinkage rate;

[0012] Wide-width weaving: adopt wide-width weaving technology to obtain the roller blind fabric required for this solution;

[0013] S2. Predetermined processing of grey cloth

[0014] The predetermined treatment is a heat treatment process for the grey cloth to eliminate the internal stress generated in the fabric during the weaving process and make its size more stable; the temperature of the predetermined treatment is set at 150-160°C, which is enough to relax the fibers and reduce the internal stress; the speed of the predetermined treatment is controlled at 40-50 m / min to ensure that the fabric receives uniform heat treatment during the predetermined process;

[0015] S3. Washing of grey fabric

[0016] For the grey fabric after the first heat treatment, high-temperature flat-cylinder washing is used to thoroughly clean the grey fabric at high temperature to completely remove dirt and floating color on the surface of the fabric, while avoiding defects such as creases and snagging;

[0017] S4. Re-determination of grey cloth

[0018] The restoring treatment is another heat treatment process for the grey cloth, the purpose of which is to further stabilize the size and performance of the fabric; the temperature of the restoring treatment is set at 160-170℃, which helps to further heat the fiber structure; the speed of the restoring treatment is controlled at 30-40 m / min, which is slower than the scheduled treatment, to ensure that the fabric is subjected to more uniform and in-depth heat treatment during the restoring treatment;

[0019] S5. Calendering of grey fabric

[0020] The cold rolling method is used to calender the grey fabric after the resetting treatment to improve the gloss and smoothness of the grey fabric and make the surface of the fabric more beautiful; the calendering temperature is set to 80℃, the pressure is set to 100T, and the speed is set to 20m / min;

[0021] S6. Baking of grey cloth

[0022] The calendered grey fabric is baked by gradient heating method to complete the manufacturing process of oversized and high-flatness roller blind fabrics;

[0023] The baking treatment includes three processes: pre-baking, baking and cooling. During the whole baking process, the vehicle speed is controlled at 15-20 m / min. During the pre-baking process, the temperature gradually rises to 160°C to eliminate the internal stress after cold rolling. During the baking process, the temperature is uniformly maintained at 185°C, which is the melting temperature of the low-melting-point polyester fiber, so that the low-melting-point polyester fiber in the weft yarn can be bonded with the warp yarn at the contact point. During the cooling process, the temperature is gradually reduced to 60°C to avoid excessive temperature inside and outside the oven, so that the hot-melt bonding points at the interweaving points of the warp and weft yarns can be evenly cooled and solidified, thereby improving the bonding effect and enhancing the structural stability of the fabric.

[0024] According to a further preferred technical solution, the warp yarn is made of 150D recycled polyester DTY masterbatch colored yarn; and the core layer of the weft yarn is made of conventional melting point ultra-fine full-dull black yarn.

[0025] According to a further preferred technical solution, both the warp yarn and the weft yarn are made of 100% recyclable raw materials.

[0026] To further optimize the technical solution, the shaping machine used in the baking process has a total of 12 oven sections; among them, sections 1 to 3 are pre-baking sections, and the corresponding oven temperatures are 80°C, 120°C, and 160°C, respectively, the pre-baking time is 27 to 36S, and the oven cold air frequency is set to 25 to 30HZ; sections 4 to 8 are baking sections, and their oven temperatures are uniformly set to 185°C, the baking time is 45 to 60S, and the oven cold air frequency is set to 35 to 40HZ; sections 9 to 12 are cooling sections, and their oven temperatures are set to 150°C, 120°C, 90°C, and 60°C, respectively, the cooling time is 36 to 48S, and the oven cold air frequency is set to 50 to 55HZ.

[0027] A roller blind fabric with extra-large size and high flatness is manufactured by adopting the method.

[0028] The beneficial effects of the present invention are:

[0029] 1. Extra large size design:

[0030] Features: The fabric width can reach 5.4 meters, which is more than 80% wider than the mainstream 3-meter wide fabric.

[0031] Advantages: It breaks through the size limitation of traditional roller blinds and is suitable for large spaces such as conference rooms, exhibition halls, gymnasiums, etc.

[0032] Application: Meet the diverse needs of sun shading, dimming and decoration, and provide architectural design flexibility.

[0033] 2. Ultra-high flatness:

[0034] Importance: Flatness is a key indicator for measuring the quality of roller blind fabrics, affecting customer selection and user experience.

[0035] Solution: Achieve high flatness through fine weaving technology and "double-sided satin" structure design, combined with post-processing technology.

[0036] Result: Even at a size of 5.4m*8m, the fabric has no wrinkles or waves in the vertical or horizontal direction, which enhances the visual beauty.

[0037] 3. Low-carbon and environmentally friendly characteristics:

[0038] Raw materials: Made from 100% recycled polyester from plastic bottles and industrial waste.

[0039] Environmental advantages: reduce the exploitation of primary resources, realize the recycling of waste, and reduce resource consumption and environmental pressure.

[0040] Production process: Avoid the use of harmful chemicals and adopt environmentally friendly processes to achieve low pollution and low emissions.

[0041] 4. Anti-loosening performance:

[0042] Technical difficulty: To improve the anti-fragmentation performance of the cut edge of the fabric without applying or applying less slurry.

[0043] Solution: Through high-temperature baking process, hot melt bonding is achieved at the interweaving points of warp and weft yarns to prevent loose threads.

[0044] User experience: Improve the processing efficiency of finished products manufacturers and provide stable and lasting services to end users

[0045] user experience.

[0046] 5. Anti-scratch performance:

[0047] Advantages: Compared with traditional coated roller blind fabrics, this roller blind fabric has excellent anti-scratch performance, which can greatly extend the time the roller blind fabric maintains its beauty during use.

[0048] 6. Service life and maintenance cost:

[0049] Advantages: Compared with PVC and traditional coated roller blind fabrics, it has better dimensional stability and longer service life.

[0050] Economical: Low maintenance cost and more reliable product safety.

[0051] 7. Promotion and application:

[0052] Purpose: To enhance public awareness of environmental issues and stimulate interest and demand for environmentally friendly materials.

[0053] Impact: Through its application in public places such as high-end hotels and government buildings, it promotes the dissemination and popularization of environmental protection concepts. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the overall process of the present invention.

[0055] Figure 2 It is a schematic diagram of the sheath-core structure of the weft yarn.

[0056] Figure 3 It is a schematic diagram of the organizational structure of roller blind fabric.

[0057] In the figure: 1-weft, 2-surface warp, 3-lining warp; 11-core layer, 12-skin layer. DETAILED DESCRIPTION

[0058] like Figure 1 As shown, a method for manufacturing an oversized and high-flatness roller blind fabric disclosed in the present invention includes the following steps:

[0059] S1. Weaving of roller blind fabric

[0060] Raw material selection: Warp yarn uses recycled polyester low-elastic yarn, and weft yarn uses skin-core structure low-melting point composite yarn; Figure 2 As shown, the sheath layer of the low-melting-point composite yarn with a sheath-core structure is made of low-melting-point polyester fiber, and the core layer is made of conventional polyester fiber; the warp yarn accounts for 30% by weight; and the weft yarn accounts for 70% by weight.

[0061] Specifically, the warp yarn is made of 150D recycled polyester DTY masterbatch colored yarn; the core layer of the weft yarn is made of conventional melting point ultra-fine full-dull black yarn, and both the warp yarn and the weft yarn are made of 100% recyclable raw materials, including plastic bottles after use by consumers and industrial waste before use by consumers.

[0062] Fabric structure design, such as Figure 3 As shown: a 7-piece 3-fly warp double-sided satin weave is designed, and the arrangement ratio of the surface diameter to the inner warp is set to 1:1, thereby ensuring that the structure of the front and back sides of the fabric is balanced and stable, and maintaining the same weaving shrinkage rate; at the same time, it can also meet the specific requirements of the roller blind fabric for the appearance beauty and style. The color and gloss of the front and back sides of this roller blind can be flexibly switched through the selection and matching of the surface diameter and inner warp masterbatch colored yarns. In addition, the shading performance of this roller blind can also be controlled and adjusted to a certain extent through the weft yarn color and density to meet different shading needs.

[0063] Wide-width weaving: adopt wide-width weaving technology to obtain the roller blind fabric required for this solution;

[0064] Specifically, in order to meet the design requirements of the ultra-wide width of this roller blind fabric, it is necessary to adopt advanced wide-width weaving technology on the basis of the existing rapier loom, and to carry out targeted installation and transformation of the relevant mechanisms of the loom to ensure the smooth progress of the fabric weaving process.

[0065] Firstly, the weft insertion mechanism of the loom was modified and equipped with a real-time monitoring device, which not only ensures the smooth progress of wide-width weft insertion, but also enables real-time monitoring of the movement and status of the weft yarn during the weft insertion process. Secondly, high-precision tension sensors and encoder feedback control are installed on the warp feeding system of the loom to ensure regular and repeatable constant control of the warp tension. After the modification, the machine can weave grey cloth with a width of up to 5.6 meters, and the quality of the grey cloth can meet the corresponding quality requirements.

[0066] S2. Predetermined processing of grey cloth

[0067] The predetermined treatment is a heat treatment process for the grey cloth. After the predetermined treatment, the width of the grey cloth will be reduced by 8 to 10 cm to eliminate the internal stress generated in the weaving process of the fabric, making its size more stable, which is conducive to the next washing process; wherein, the temperature of the predetermined treatment is set at 150 to 160°C, and this temperature range is sufficient to relax the fibers and reduce internal stress; the vehicle speed of the predetermined treatment is controlled at 40 to 50 meters per minute to ensure that the fabric receives uniform heat treatment during the predetermined process.

[0068] S3. Washing of grey fabric

[0069] For the grey cloth after the first heat treatment, high-temperature flat-cylinder washing is used to thoroughly clean the grey cloth at high temperature to completely remove dirt and floating color on the surface of the fabric, while avoiding defects such as creases and snags.

[0070] S4. Re-determination of grey cloth

[0071] The restoring treatment is another heat treatment process for the grey cloth, the purpose of which is to further stabilize the size and performance of the fabric; the temperature of the restoring treatment is set at 160-170℃, which helps to further stabilize the fiber structure; the speed of the restoring treatment is controlled at 30-40 m / min, which is slower than the scheduled treatment, to ensure that the fabric is subjected to more uniform and in-depth heat treatment during the restoring treatment; after the restoring treatment, the size, color, gloss and weight of the fabric must meet the set requirements.

[0072] S5. Calendering of grey fabric

[0073] The cold rolling method is used to calender the grey cloth after the fixation treatment to improve the gloss and smoothness of the grey cloth and make the surface of the fabric more beautiful; the calendering temperature is set to 80℃, the pressure is set to 100T, and the speed is set to 20 meters / minute; to meet the conventional light-shielding requirements of the roller blind fabric.

[0074] S6. Baking of grey cloth

[0075] The calendered grey fabric is baked by gradient heating method to complete the manufacturing process of oversized and high-flatness roller blind fabrics;

[0076] The baking treatment includes three processes: pre-baking, baking and cooling; during the whole baking treatment process, the vehicle speed is controlled at 15-20 m / min, the temperature gradually rises to 160°C during the pre-baking process, and the frequency of cold air in this section is relatively small, which can not only eliminate the internal stress after cold rolling, but also effectively avoid the fabric from being heated sharply and generating new thermal stress; during the baking process, the temperature is uniformly maintained at 185°C, which is the melting temperature of low-melting-point polyester fibers, so that the low-melting-point polyester fibers in the weft yarns are bonded to the warp yarns at the contact points; during the cooling process, the temperature is gradually reduced to 60°C, and the frequency of cold air in the oven in this section should be appropriately larger, so that the temperature can be evenly and quickly reduced to below the glass transition temperature of the polyester fabric, which can not only effectively fix its shape and size, but also enable the hot melt bonding points at the interweaving points of the warp and weft yarns to be evenly cooled and solidified, thereby improving the bonding effect.

[0077] In short, the synergy of temperature, time and cold air frequency is the key to achieving good flatness and dimensional stability of this roll material. Reasonable temperature setting, time setting and cold air frequency adjustment can ensure that the fabric maintains a stable shape during the heating process and obtains the ideal size and shape after cooling.

[0078] Specifically, the shaping machine used in the baking process has a total of 12 oven sections; among them, sections 1 to 3 are pre-baking sections, and the corresponding oven temperatures are 80°C, 120°C, and 160°C respectively, the pre-baking time is 27 to 36S, and the oven cold air frequency is set to 25 to 30HZ; sections 4 to 8 are baking sections, and their oven temperatures are uniformly set to 185°C, the baking time is 45 to 60S, and the oven cold air frequency is set to 35 to 40HZ; sections 9 to 12 are cooling sections, and their oven temperatures are set to 150°C, 120°C, 90°C, and 60°C respectively, the cooling time is 36 to 48S, and the oven cold air frequency is set to 50 to 55HZ.

[0079] Fabric flatness comparison test:

[0080] 1. Test indicators:

[0081] Average deviation pitch (mm), maximum deviation pitch (mm), minimum deviation pitch (mm), standard deviation of deviation pitch (mm);

[0082] 2. Sample selection:

[0083] Large size high flatness roller blind fabric samples: 3 (recorded as H1, H2, H3)

[0084] Large-size roller blind fabric samples with normal flatness: 3 (recorded as P1, P2, P3)

[0085] 3. Test steps:

[0086] Roll each sample obliquely onto the roll tube according to the prescribed method to make it deviate. Use the deviation pitch measuring device to measure each rolled fabric multiple times and record the deviation pitch value of each measurement. Calculate the average deviation pitch, maximum deviation pitch, minimum deviation pitch and deviation pitch standard deviation of each sample.

[0087] 4. Comparative test data:

[0088]

[0089]

[0090] Comparison of test results:

[0091] (1) The average deviation pitch of high-flatness fabric is 2.0mm, and the average deviation pitch of ordinary flatness fabric is 4.6mm. The average deviation pitch of high-flatness fabric is 56.5% lower than that of ordinary flatness fabric.

[0092] (2) The average maximum deviation pitch of high-flatness fabric is 2.4 mm, and the average maximum deviation pitch of ordinary flatness fabric is 5.1 mm; the maximum deviation pitch of high-flatness fabric is 52.9% lower than that of ordinary flatness fabric.

[0093] (3) The average minimum deviation pitch of high-flatness fabrics is 1.6 mm, and the average minimum deviation pitch of ordinary flatness fabrics is 4.1 mm; the minimum deviation pitch of high-flatness fabrics is 61.0% lower than that of ordinary flatness fabrics.

[0094] (4) The average standard deviation of the deviation pitch of high-flatness fabrics is 0.23mm, and the average standard deviation of the deviation pitch of ordinary flatness fabrics is 0.53mm; the standard deviation of the deviation pitch of high-flatness fabrics is 56.6% lower than that of ordinary flatness fabrics.

[0095] Test conclusion:

[0096] (1) Average deviation pitch: The average deviation pitch of the large-size high-flatness roller blind fabric of the present invention is significantly smaller than that of the ordinary roller blind fabric, indicating that it can better maintain flatness during the winding process and reduce deviation.

[0097] (2) Maximum and minimum deviation pitches: The difference between the maximum and minimum deviation pitches of the large-size high-flatness roller blind fabric of the present invention is small, indicating that its flatness is more uniform. The maximum deviation pitch of the ordinary roller blind fabric is larger, indicating that there is a more obvious deviation phenomenon in some positions.

[0098] (3) Standard deviation of deviation pitch: The standard deviation reflects the degree of data dispersion. The standard deviation of deviation pitch of large-size and high-flatness roller blind fabric is smaller, indicating that the measured values ​​of its deviation pitch are more concentrated and the flatness is more stable. The standard deviation of ordinary roller blind fabric is larger, indicating that its flatness fluctuates greatly at different positions.

[0099] The comparison test of the flatness of large-size high-flatness roller blind fabric and ordinary roller blind fabric by the deviation pitch measurement method shows that the large-size high-flatness roller blind fabric performs well in flatness, with a small average deviation pitch and uniform and stable flatness.

[0100] In addition to the above advantages, this fabric has significantly better scratch resistance than traditional coated roller blind fabrics.

[0101] Specifically, traditional coated roller blind fabrics are based on the padding or scraping finishing of acrylic or polyurethane coating slurry to ensure the flatness, hardness and fastness of the fabric; however, after a layer of coating slurry is attached to or coated on the surface of the fabric, it is very easy to leave scratches and marks of the slurry on the surface of the roller blind fabric when it is scratched or collided during processing or use, and these scratches and marks cannot be restored, which greatly affects the appearance performance of the roll material fabric, thereby reducing the user experience:

[0102] Through the selection of raw materials, the design of the organizational structure and the setting of related processing technology, this type of roller blind fabric can not only achieve excellent flatness for large-size roll fabrics, but also have good light-shielding and appearance performance. In addition, based on specific raw materials and processing technology, this type of roll fabric also has excellent scratch resistance.

[0103] Anti-scratch comparison test:

[0104] 1. Test materials and tools

[0105] 1. Large-size and high-flatness roller blind fabric samples: 3 pieces, each with a size of at least 10cm x 10cm.

[0106] 2. Large-sized ordinary coated roller blind fabric samples: 3 pieces, each with a size of at least 10cm x 10cm.

[0107] 3. Standardized scraping tools: such as Mohs hardness tester or custom scraper.

[0108] 4. High-precision microscope or image analysis system: used to observe and record scratches.

[0109] 5. Timer: used to record the scratch recovery time.

[0110] 2. Test steps

[0111] 1. Sample preparation: Clean all fabric samples to ensure there is no impurities on the surface.

[0112] 2. Scrape test: Use a standardized scraping tool to scrape all samples under the same conditions (scraping force, speed, angle), and scrape each sample 5 times.

[0113] 3. Scratch record: After each scratch, use a microscope or image analysis system to record the depth, width and number of scratches.

[0114] 4. Scratch recovery observation: After the scratch test, observe and record at regular intervals (such as 1 hour, 24 hours) whether the scratches disappear or weaken automatically.

[0115] 3. Test data recording

[0116]

[0117] 4. Data Analysis and Conclusion

[0118] (1) Scratch depth: The average scratch depth of the anti-scratch roller blind fabric is 4.6 μm, which is much lower than the 11.4 μm of the ordinary coated roller blind fabric.

[0119] (2) Scratch width: The average scratch width of the anti-scratch roller blind fabric is 10.3 μm, which is significantly narrower than the 42.3 μm of the ordinary coated roller blind fabric.

[0120] (3) Number of scratches: The average number of scratches on the anti-scratch roller blind fabric is 2.3, which is much less than the 11 scratches on the ordinary coated roller blind fabric.

[0121] (4) Scratch recovery: After 24 hours, the scratches on the anti-scratch roller blind fabric almost disappear or are significantly weakened, while there is no obvious change on the ordinary coated roller blind fabric.

[0122] In summary, the roller blind fabric prepared by the present invention is significantly superior to the ordinary coated roller blind fabric in terms of scratch depth, width, number and scratch recovery, and shows stronger scratch resistance. Therefore, for application scenarios requiring high scratch resistance, it is recommended to use the roller blind fabric prepared by the present invention.

Claims

1. A method for manufacturing a roller blind fabric with super large size and high flatness, It is characterized in that The process steps include: S1. Weaving of grey fabric Raw material selection: the warp yarn is made of recycled polyester low-elastic yarn, and the weft yarn is made of sheath-core structured low-melting point composite yarn; the sheath layer of the sheath-core structured low-melting point composite yarn is made of low-melting point polyester fiber, and the core layer is conventional polyester fiber; the warp yarn accounts for 30% by weight; and the weft yarn accounts for 70% by weight. Fabric structure design: Design 7-piece 3-fly double-sided satin structure, and set the ratio of surface diameter to inner warp to 1:1, so as to ensure the balanced and stable structure of the front and back sides of the fabric and maintain the same weaving shrinkage rate; Wide-width weaving: adopt wide-width weaving technology to obtain the roller blind fabric required for this solution; S2. Predetermined processing of grey cloth The predetermined treatment is a heat treatment process for the grey cloth to eliminate the internal stress generated in the fabric during the weaving process and make its size more stable; the temperature of the predetermined treatment is set at 150-160°C, which is enough to relax the fibers and reduce the internal stress; the speed of the predetermined treatment is controlled at 40-50 m / min to ensure that the fabric receives uniform heat treatment during the predetermined process; S3. Washing of grey fabric For the grey fabric after the first heat treatment, high-temperature flat-cylinder washing is used to thoroughly clean the grey fabric at high temperature to completely remove dirt and floating color on the surface of the fabric, while avoiding defects such as creases and snagging; S4. Re-determination of grey cloth This resetting process is another heat treatment process for the grey cloth, the purpose of which is to further stabilize the size and performance of the fabric; the temperature of the resetting process is set at 160-170°C; the speed of the resetting process is controlled at 30-40 m / min, which is slower than the scheduled treatment, to ensure that the fabric is subjected to more uniform and in-depth heat treatment during the resetting process; S5. Calendering of grey fabric The cold rolling method is used to calender the grey fabric after the resetting treatment to improve the gloss and smoothness of the grey fabric and make the surface of the fabric more beautiful; the calendering temperature is set to 80℃, the pressure is set to 100T, and the speed is set to 20m / min; S6. Baking of grey cloth The calendered grey fabric is baked by gradient heating method to complete the manufacturing process of oversized and high-flatness roller blind fabrics; The baking treatment includes three processes: pre-baking, baking and cooling. During the whole baking process, the vehicle speed is controlled at 15-20 m / min. During the pre-baking process, the temperature gradually rises to 160°C to eliminate the internal stress after cold rolling. During the baking process, the temperature is uniformly maintained at 185°C, which is the melting temperature of the low-melting-point polyester fiber, so that the low-melting-point polyester fiber in the weft yarn can be bonded with the warp yarn at the contact point. During the cooling process, the temperature is gradually reduced to 60°C to avoid excessive temperature inside and outside the oven, so that the hot-melt bonding points at the interweaving points of the warp and weft yarns can be evenly cooled and solidified, thereby improving the bonding effect and enhancing the structural stability of the fabric.

2. A method for manufacturing an oversized and highly flat roller blind fabric as claimed in claim 1, It is characterized in that The warp yarn is made of 150D recycled polyester DTY masterbatch colored yarn; the core layer of the weft yarn is made of conventional melting point ultra-fine full-dull black yarn.

3. A method for manufacturing an oversized and highly flat roller blind fabric as claimed in claim 1, It is characterized in that The warp yarns and the weft yarns are both made from 100% recycled raw materials.

4. A method for manufacturing an oversized and highly flat roller blind fabric as claimed in claim 1, It is characterized in that The shaping machine used in the baking process has a total of 12 oven sections; sections 1 to 3 are pre-baking sections, and the corresponding oven temperatures are 80°C, 120°C, and 160°C respectively, the pre-baking time is 27 to 36S, and the oven cold air frequency is set to 25 to 30HZ; sections 4 to 8 are baking sections, and their oven temperatures are uniformly set to 185°C, the baking time is 45 to 60S, and the oven cold air frequency is set to 35 to 40HZ; sections 9 to 12 are cooling sections, and their oven temperatures are set to 150°C, 120°C, 90°C, and 60°C respectively, the cooling time is 36 to 48S, and the oven cold air frequency is set to 50 to 55HZ.

5. A method for manufacturing a roller blind fabric with super large size and high flatness, It is characterized in that The method is manufactured by any one of claims 1 to 4.

Images