Production process of low-energy-consumption ribbon trademark material

Abstract

The invention belongs to the technical field of textile label tapes, and particularly relates to a production process of a low-energy-consumption ribbon label material, which comprises the following steps of: placing polypropylene, polypropylene resin, acrylic acid, an initiator and an auxiliary agent in a closed container, filling liquid ammonia to form high pressure, and instantly releasing the pressure to obtain crystal change modified polypropylene fiber; the modified polypropylene fiber yarn is introduced to greatly reduce the thermal shrinkage rate of the polypropylene fiber fabric and improve the temperature resistance, and then the polypropylene fiber fabric is subjected to cold batch-desizing treatment, so that the thermal shrinkage rate of the polypropylene fiber fabric is further reduced, full preshrinking is realized, the effect of stable size is achieved, and the polypropylene fiber can be used as a trademark material.

Description

Technical Field

[0001] The invention relates to the technical field of textile trademark tapes, in particular to a production process of a low-energy consumption ribbon trademark material. Background Art

[0002] As an important carrier of textile information, trademark tape is mainly used in clothing, shoes, hats, bedding, toys and other industries to provide consumers with basic attributes and performance of products. The trademark tape is woven into a strip continuously during production. Each small piece of fabric has the brand name, manufacturer, country name, specifications and other marks. The size can be determined according to needs. At present, it is mainly prepared by embroidery, weaving and printing. Therefore, the trademark tape needs to meet specific functional requirements such as feel and printing. Among them, the printing method usually uses a certain type of fabric as the base fabric, and then it is coated and processed in the later stage such as calendering and striping to obtain the trademark cloth.

[0003] Conventional polyester ribbon trademark materials are made of 100% polyester. For example, Chinese patent CN102704223A discloses a continuous desizing process for trademark cloth made of synthetic fibers. Synthetic fibers include polyester fibers, polyacrylonitrile fibers, polyamide fibers, etc. Polyethylene terephthalate (polyester) is more preferred. However, the glass transition temperature of polyester is relatively high (70-75°C). To achieve a better cloth surface effect, high-temperature calendering treatment is required. In actual operation, the roller surface temperature of the calendering machine reaches 120-180°C, which almost reaches the tolerance limit of the calendering nylon roller. It is not only energy-intensive, but also easy to cause a short life of the calendering equipment (3 months). As a commonly used artificial synthetic fiber, polypropylene has a glass transition temperature that is about 10°C lower, which can reduce the shaping width and significantly reduce the calendering temperature and energy consumption. However, polypropylene has poor temperature resistance and its heat shrinkage rate (about 7.0%) is higher than that of polyester (about 2.5%). If produced by conventional processes, its printing and washing dimensional stability is also poor, and it cannot be used as a trademark material. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides a production process for a low-energy consumption ribbon trademark material. The modified polypropylene yarn is introduced to significantly reduce the heat shrinkage rate of the polypropylene fabric and improve the temperature resistance. Meanwhile, the polypropylene fabric is subjected to a cold stacking-desizing treatment to further reduce the heat shrinkage rate of the polypropylene fabric, thereby solving the problem that polypropylene cannot be used as a trademark material at present.

[0005] To achieve the above purpose, the specific technical solutions of the present invention are as follows: The invention provides a modified polypropylene fiber with high temperature resistance, which is composed of the following components in parts by weight: 30-50 parts of polypropylene, 20-45 parts of polypropylene resin, 10-25 parts of acrylic acid, 1-5 parts of initiator and 5-10 parts of auxiliary agent.

[0006] The auxiliary agent is at least one of an antioxidant, a light stabilizer, a heat stabilizer, a colorant, or an inorganic filler; and the initiator is azobisisobutyronitrile (AIBN).

[0007] A method for preparing a modified polypropylene fiber with high temperature resistance comprises the following steps: S1, mixing polypropylene, polypropylene resin, acrylic acid, initiator and additives in a mixer according to a certain proportion, and stirring them evenly with a stirrer to obtain a mixture 1; S2, placing the mixture 1 in a closed container, charging it with liquid ammonia, increasing the pressure to 8-12 MPa, maintaining the pressure for 15-25 minutes, then releasing the pressure instantly, removing the liquid ammonia until the pressure in the closed container drops to 133 Pa, and obtaining the crystal-modified polypropylene; S3, adding the modified polypropylene fiber of step S2 into a twin-screw extruder for melt extrusion and granulation to obtain the required particles, and then drying the particles in a dryer to obtain spinning raw materials; S4. After the spinning raw material obtained in step S3 is cooled, drawn, curled, oiled, heat-set, cut and packaged, a modified polypropylene fiber with high temperature resistance can be obtained.

[0008] Furthermore, in step S2, the liquid ammonia is removed by an evaporation method in which heating and vacuum pumping are performed in parallel.

[0009] Furthermore, the rotation speed of the twin-screw extruder in step S3 is 800-1000 r / min.

[0010] Furthermore, in step S3, the setting temperature of the drying machine is 100-120° C., and the drying time is 3-6 hours.

[0011] Mixture 1 is placed in a sealed container and filled with liquid ammonia to increase the pressure. Polypropylene and polypropylene resin are mixed to form polypropylene. The polypropylene realizes the modification of polypropylene crystal change in the process of high pressure and instantaneous pressure release. When the high pressure is released instantly, the energy state and molecular arrangement inside the polypropylene change, inducing the change of the crystal structure. This crystal change enables the polypropylene to obtain a more stable crystal structure and improves its temperature resistance. At the same time, liquid ammonia will penetrate into the polypropylene molecules under high pressure, causing the polypropylene molecules to swell and the pores to become larger, so that acrylic acid can enter the fiber, and then have a larger contact area. Under the action of the initiator, the grafting reaction of acrylic acid and polypropylene will also introduce more carboxylic acid groups. The carboxylic acid group is a polar group, and hydrogen bonds will be generated between polar groups. The interaction of hydrogen bonds can resist the destruction of the molecular chain by thermal motion to a certain extent, that is, it can provide additional stable energy for polypropylene, which helps to maintain the structure and performance of the material and improve its temperature resistance. In addition, during the grafting process, acrylic acid will also form a cross-linked network on the surface of polypropylene fibers. These cross-linking points will limit the movement of polymer chain segments, making it difficult for the molecular chains of polypropylene fibers to slide and deform when heated. When the temperature rises, the cross-linked structure can maintain the integrity of the material, thereby improving the thermal stability and temperature resistance of the polypropylene fibers. The grafting of acrylic acid will affect the original crystal structure of polypropylene. On the one hand, the grafted acrylic acid may interfere with the regular arrangement of polypropylene molecular chains and reduce the crystallinity to a certain extent. On the other hand, it will also induce the formation of new crystal forms or make the crystal size smaller and more evenly distributed. This changed crystal structure is more stable at high temperatures and can withstand higher temperatures without obvious thermal shrinkage or melting, thereby improving temperature resistance.

[0012] A production process of a low-energy consumption ribbon trademark material comprises the following steps: (1) Weaving: Weaving polypropylene fabrics with polypropylene yarn made of modified polypropylene fiber, satin or plain weave, density of 100-120g / m2, filament fineness of 50-100D*50-100D in warp and weft directions, warp and weft density of 70-140 strands / cm*30-50 strands / cm, produced by water jet or air jet loom; (2) Cold stacking pretreatment: The polypropylene fabric enters the cold stacking liquid coating machine in a flat width manner and is immersed in the cold stacking treatment liquid. The speed is 10-30 m / min, the temperature is 20-30 °C, the rolling pressure is 0.30-0.40 MPa, and the tension frame pressure is 0.35-0.45 MPa. After being immersed in the cold stacking treatment liquid, the fabric is coated with an outer layer in a roll-shaped manner, and the reel rotates at a speed of 10-50 rpm and is placed at room temperature for 6-24 hours. (3) Desizing: The pretreated polypropylene fabric is introduced into a continuous desizing and refining machine in a large roll for desizing. The speed is 50-100 m / min. The desizing and refining machine contains two material tanks, five water washing tanks, and one set of drying cylinders. The two material tanks are connected and filled with desizing treatment liquid. The temperature of the material tanks is set to 50-90°C, and the temperature of the five water washing tanks is set to 95 / 95 / 90 / 80 / 60°C respectively. Clean water is injected into the last water washing tank with a water flow rate of 1.5 t / h-2.5 t / h. The water flows back to the first water washing tank and is discharged; (4) Shaping and calendering treatment: The shaping equipment adopts a 9-section high-efficiency shaping machine, the shaping temperature is 120-160℃, the speed is 50-90m / min, and the shaping width is about 5% less than the refined cloth width; a high-pressure eight-roll calender is used, the speed is 10-40m / min, the pressure is 5-8mPa, the speed is 10-40m / min, and the unwinding adopts constant tension unwinding.

[0013] Furthermore, in step (1), the specification of the polypropylene yarn is one of 50D, 68D, 75D, 100D, and 150D.

[0014] Furthermore, the cold stack treatment liquid in step (2) comprises 25-45 g / L soda ash, 0.5%-2% dioctyl adipate (DOA) by weight of the fabric, and 0.5-2 g / L sodium dodecylbenzene sulfonate (LAS).

[0015] Furthermore, the desizing solution in step (3) comprises 2-8 g / L dibutyl succinate (DBS), 8-10 g / L NaOH, 2-5 g / L desizing aid, and 2-5 g / L chelating dispersant.

[0016] Furthermore, the desizing aid is one or more of a penetrant, a wetting agent, a detergent, and a refining agent, and the chelating dispersant is one or more of sodium gluconate, sodium ethylenediamine di-o-hydroxyphenyl acetate, and hydroxyethylidene diphosphonic acid.

[0017] The soda ash in the cold stacking treatment liquid can react with the acidic impurities that may exist on the fabric and help to remove the subsequent slurry. Sodium dodecylbenzene sulfonate (LAS) acts as a surfactant to reduce the surface tension between the fabric and the treatment liquid, allowing the treatment liquid to better penetrate into the fabric and promote subsequent reactions. Dioctyl adipate (DOA) acts as a plasticizer and can penetrate into the polypropylene fiber, reduce the intermolecular force, and improve the fiber's flexibility and thermal shrinkage. Cold stacking treatment can optimize the performance of polypropylene fibers, making the fabric relatively "clean". The components in the treatment liquid can better act on the fibers, and the bite force between the fibers will be enhanced due to the removal of impurities and the optimization of the fiber structure, thereby improving the strength and dimensional stability of the fabric and reducing deformation, rupture and other problems that occur during subsequent processing or use. At higher temperatures, the NaOH in the desizing solution can undergo saponification and hydrolysis reactions with functional groups such as esters and carboxyl groups in the slurry, destroying the slurry structure. Dibutyl sebacate (DBS) further exerts its plasticizing effect at high temperatures and interacts with the polypropylene molecules to achieve full preshrinkage and dimensional stability, increasing the heat shrinkage rate while making the fiber softer.

[0018] The beneficial effects of the present invention are: The present invention provides a production process of a low-energy consumption ribbon trademark material, wherein polypropylene, polypropylene resin, acrylic acid, an initiator and an auxiliary agent are placed in a closed container, liquid ammonia is filled in to form high pressure, and the pressure is released instantly to obtain crystal-modified polypropylene, and the introduced modified polypropylene yarn greatly reduces the heat shrinkage rate of the polypropylene fabric and improves the temperature resistance, and then the polypropylene fabric is subjected to a cold stack-desizing treatment to further reduce the heat shrinkage rate of the polypropylene fabric, achieve full preshrinkage, and achieve a dimensional stability effect, so that the polypropylene can be used as a trademark material. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the examples, but the present invention is not limited thereby. The experimental methods in the following examples are conventional methods unless otherwise specified.

[0020] Example 1 A modified polypropylene fiber with high temperature resistance is composed of the following components in parts by weight: 30 parts of polypropylene, 20 parts of polypropylene resin, 10 parts of acrylic acid, 1 part of initiator and 5 parts of auxiliary agent. The auxiliary agent is an antioxidant, and the initiator is azobisisobutyronitrile (AIBN).

[0021] A method for preparing a modified polypropylene fiber with high temperature resistance comprises the following steps: S1, mixing polypropylene, polypropylene resin, acrylic acid, initiator and additives in a mixer according to a certain proportion, and stirring them evenly with a stirrer to obtain a mixture 1; S2, placing the mixed material 1 in a closed container, charging it with liquid ammonia, increasing the pressure to 8MPa, maintaining the pressure for 15 minutes, then releasing the pressure instantly, removing the liquid ammonia by an evaporation method in parallel with heating and vacuum pumping until the pressure in the closed container drops to 133Pa, thus obtaining the crystal-modified polypropylene fiber; S3, adding the modified polypropylene fiber of step S2 into a twin-screw extruder for melt extrusion and granulation to obtain the desired particles, the speed of the twin-screw extruder is 800r / min, and the particles are then dried in a dryer at 100°C for 3h to obtain a spinning raw material; S4. After the spinning raw material obtained in step S3 is cooled, drawn, curled, oiled, heat-set, cut and packaged, a modified polypropylene fiber with high temperature resistance can be obtained.

[0022] A production process of a low-energy consumption ribbon trademark material comprises the following steps: (1) Weaving: Weaving polypropylene fabric with polypropylene yarn made of modified polypropylene fiber, the specification of polypropylene yarn is 50D, woven or plain weave, density is 100g / m2, the fineness of filament in warp and weft direction is 50D*50D, the density of warp and weft direction is 70 strands / cm*30 strands / cm, and it is produced by water jet or air jet loom; (2) Cold stacking pretreatment: The polypropylene fabric enters the cold stacking liquid coating machine in a flat width manner and is immersed in the cold stacking treatment liquid. The speed is 10m / min, the temperature is 20℃, the rolling pressure is 0.30Mpa, and the tension frame pressure is 0.35Mpa. After being immersed in the cold stacking treatment liquid, the composition of the cold stacking treatment liquid is 25g / L soda ash, 0.5% dioctyl adipate (DOA) by weight of the fabric, and 0.5g / L sodium dodecylbenzene sulfonate (LAS). The fabric is coated with an outer layer in a roll-like manner, and the reel rotates at a speed of 10 rpm and is placed at room temperature for 6h. (3) Desizing: The pretreated polypropylene fabric is introduced into a continuous desizing and refining machine in a large roll for desizing. The speed is 50 m / min. The desizing and refining machine contains two material troughs, 5 water washing troughs, and 1 set of drying cylinders. The two material troughs are connected and filled with desizing liquid. The temperature of the material trough is set to 50 °C, and the temperatures of the 5 water washing troughs are set to 95 / 95 / 90 / 80 / 60 °C respectively. Clean water is injected into the last water washing trough with a water flow rate of 1.5 t / h. The water flows back to the first water washing trough for discharge.

[0023] (4) Shaping and calendering treatment: The shaping equipment adopts a 9-section high-efficiency shaping machine, the shaping temperature is 120℃, the speed is 50m / min, the shaping width is about 5% less than the refined cloth width, and a high-pressure eight-roll calender is used, the speed is 10m / min, the pressure is 5mPa, the speed is 10m / min, and the unwinding adopts constant tension unwinding.

[0024] Example 2 A modified polypropylene fiber with high temperature resistance is composed of the following components in parts by weight: 50 parts of polypropylene, 45 parts of polypropylene resin, 25 parts of acrylic acid, 5 parts of initiator and 10 parts of auxiliary agent. The auxiliary agent is a light stabilizer, and the initiator is azobisisobutyronitrile (AIBN).

[0025] A method for preparing a modified polypropylene fiber with high temperature resistance comprises the following steps: S1, mixing polypropylene, polypropylene resin, acrylic acid, initiator and additives in a mixer according to a certain proportion, and stirring them evenly with a stirrer to obtain a mixture 1; S2, placing the mixed material 1 in a closed container, charging it with liquid ammonia, increasing the pressure to 12MPa, maintaining the pressure for 25min, then releasing the pressure instantly, removing the liquid ammonia by evaporation method in parallel with heating and vacuum pumping until the pressure in the closed container drops to 133Pa, thus obtaining the crystal-modified polypropylene fiber; S3, adding the modified polypropylene fiber of step S2 into a twin-screw extruder for melt extrusion and granulation to obtain the desired particles, the speed of the twin-screw extruder is 1000r / min, and the particles are then dried in a dryer at 120°C for 3-6h to obtain a spinning raw material; S4. After the spinning raw material obtained in step S3 is cooled, drawn, curled, oiled, heat-set, cut and packaged, a modified polypropylene fiber with high temperature resistance can be obtained.

[0026] A production process of a low-energy consumption ribbon trademark material comprises the following steps: (1) Weaving: Weaving polypropylene fabric with polypropylene yarn made of modified polypropylene fiber, the specification of polypropylene yarn is 75D, satin or plain weave, the density is 120g / m2, the filament fineness in warp and weft direction is 100D*100D, the warp and weft density is 140 strands / cm*50 strands / cm, and it is produced by water jet or air jet loom; (2) Cold stacking pretreatment: The polypropylene fabric enters the cold stacking liquid coating machine in a flat width manner and is immersed in the cold stacking treatment liquid. The speed is 30m / min, the temperature is 30℃, the rolling pressure is 0.40Mpa, and the tension frame pressure is 0.45Mpa. After being immersed in the cold stacking treatment liquid, the composition of the cold stacking treatment liquid is 45g / L soda ash, 2% dioctyl adipate (DOA) by weight of the fabric, and 2g / L sodium dodecylbenzene sulfonate (LAS). The fabric is coated with an outer layer in a roll-like manner, and the reel rotates at a speed of 50 rpm and is placed at room temperature for 24h. (3) Desizing treatment: The pretreated polypropylene fabric is introduced into a continuous desizing and refining machine in a large roll form for desizing. The speed is 100 m / min. The desizing and refining machine contains two material tanks, five water washing tanks, and one set of drying cylinders. The two material tanks are connected and filled with desizing treatment liquid. The temperature of the material tank is set to 90°C, and the temperatures of the five water washing tanks are set to 95 / 95 / 90 / 80 / 60°C respectively. Clean water is injected into the last water washing tank with a water flow rate of 2.5 t / h. The water flows back to the first water washing tank and is discharged; (4) Shaping and calendering treatment: The shaping equipment adopts a 9-section high-efficiency shaping machine, the shaping temperature is 160℃, the speed is 90m / min, the shaping width is about 5% less than the refined cloth width, and a high-pressure eight-roll calender is used, the speed is 40m / min, the pressure is 8mPa, the speed is 40m / min, and the unwinding adopts constant tension unwinding.

[0027] Example 3 A modified polypropylene fiber with high temperature resistance is composed of the following components in parts by weight: 40 parts of polypropylene, 32.5 parts of polypropylene resin, 17.5 parts of acrylic acid, 3 parts of initiator and 7.5 parts of auxiliary agent. The auxiliary agent is a heat stabilizer, and the initiator is azobisisobutyronitrile (AIBN).

[0028] A method for preparing a modified polypropylene fiber with high temperature resistance comprises the following steps: S1, mixing polypropylene, polypropylene resin, acrylic acid, initiator and additives in a mixer according to a certain proportion, and stirring them evenly with a stirrer to obtain a mixture 1; S2, placing the mixed material 1 in a closed container, charging it with liquid ammonia, increasing the pressure to 10MPa, maintaining the pressure for 20 minutes, then releasing the pressure instantly, removing the liquid ammonia by evaporation in parallel with heating and vacuum pumping until the pressure in the closed container drops to 133Pa, thus obtaining the crystal-modified polypropylene fiber; S3, adding the modified polypropylene fiber of step S2 into a twin-screw extruder for melt extrusion and granulation to obtain the desired particles, the speed of the twin-screw extruder is 900r / min, and the particles are then dried in a dryer at 110°C for 5h to obtain a spinning raw material; S4. After the spinning raw material obtained in step S3 is cooled, drawn, curled, oiled, heat-set, cut and packaged, a modified polypropylene fiber with high temperature resistance can be obtained.

[0029] A production process of a low-energy consumption ribbon trademark material comprises the following steps: (1) Weaving: Weaving polypropylene fabric with polypropylene yarn made of modified polypropylene fiber, the specification of polypropylene yarn is 100D, satin or plain weave, density is 110g / m2, the fineness of filament in warp and weft direction is 75D*75D, the density of warp and weft direction is 50 strands / cm*40 strands / cm, and it is produced by water jet or air jet loom; (2) Cold stacking pretreatment: The polypropylene fabric enters the cold stacking liquid coating machine in a flat width manner and is immersed in the cold stacking treatment liquid. The speed is 20m / min, the temperature is 25℃, the rolling pressure is 0.35Mpa, and the tension frame pressure is 0.40Mpa. After being immersed in the cold stacking treatment liquid, the composition of the cold stacking treatment liquid is 35g / L soda ash, 1.25% dioctyl adipate (DOA) by weight of the fabric, and 1.25g / L sodium dodecylbenzene sulfonate (LAS). The fabric is coated with an outer layer in a roll-like manner, and the reel rotates at a speed of 225 rpm and is placed at room temperature for 9h. (3) Desizing treatment: The pretreated polypropylene fabric is introduced into a continuous desizing and refining machine in a large roll form for desizing. The speed is 75m / min. The desizing and refining machine contains two material tanks, five water washing tanks, and one set of drying cylinders. The two material tanks are connected and filled with desizing treatment liquid. The temperature of the material tank is set to 70℃, and the temperatures of the five water washing tanks are set to 95 / 95 / 90 / 80 / 60℃ respectively. Clean water is injected into the last water washing tank with a water flow rate of 2.0t / h. The water flows back to the first water washing tank and is discharged; (4) Shaping and calendering treatment: The shaping equipment adopts a 9-section high-efficiency shaping machine with a shaping temperature of 140°C and a speed of 70m / min. The shaping width is about 5% less than that of the refined cloth. A high-pressure eight-roll calender is used with a speed of 25m / min, a pressure of 6.5mPa, and a speed of 25m / min. Unwinding adopts constant tension unwinding.

[0030] Comparative Example 1: This comparative example 1 is basically the same as Example 3, except that there is no acrylic acid in step S1 of the polypropylene fiber modification process.

[0031] Comparative Example 2: This comparative example 2 is basically the same as Example 3, except that there is no step S2 in the polypropylene fiber modification process.

[0032] Comparative Example 3: This comparative example 2 is basically the same as Example 3, except that the production process of the low-energy consumption ribbon trademark material does not include step (2) cold stack pretreatment.

[0033] Comparative Example 4: This comparative example 2 is basically the same as Example 3, except that the production process of the low-energy consumption ribbon trademark material does not include (3) desizing treatment.

[0034] Test experiment: Seven samples of Examples 1-3 and Comparative Examples 1-4 were used as test samples for testing, and the test results are shown in Table 1.

[0035] Table 1 Thermal shrinkage test results Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Thermal shrinkage 0.01 0 0.01 5.50 4.25 3.78 5.36 By comparing the examples and the comparative examples, it can be seen that the heat shrinkage rates of the examples are 0.01 and 0, respectively, which indicates that the samples of the examples have very low heat shrinkage under the test conditions, and have excellent thermal stability, and can maintain good dimensional stability under heat. Moreover, the examples are significantly better than the comparative examples in terms of heat shrinkage rate. In the polypropylene modification process, no acrylic acid is added in comparative example 1, and no carboxylic acid groups are introduced. In the polypropylene modification process, comparative example 2 does not undergo a step of high pressure and then instantaneous pressure release to change the crystal form of the polypropylene. In the production process of the low-energy consumption ribbon trademark material, comparative example 3 does not have step (2) cold stack pretreatment. In the production process of the low-energy consumption ribbon trademark material, comparative example 4 does not have step (3) desizing treatment. Therefore, the heat shrinkage rates of the comparative examples are all higher than those of the examples.

[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A production process for low-energy consumption ribbon trademark material, characterized in that: The steps include: (1) Weaving: Weaving polypropylene fabrics with polypropylene yarn made of modified polypropylene fiber, satin or plain weave, density of 100-120g / m2, filament fineness of 50-100D*50-100D in warp and weft directions, warp and weft density of 70-140 strands / cm*30-50 strands / cm, produced by water jet or air jet loom; (2) Cold stacking pretreatment: The polypropylene fabric enters the cold stacking liquid coating machine in a flat width manner and is immersed in the cold stacking treatment liquid. The speed is 10-30 m / min, the temperature is 20-30 °C, the rolling pressure is 0.30-0.40 MPa, and the tension frame pressure is 0.35-0.45 MPa. After being immersed in the cold stacking treatment liquid, the fabric is coated with an outer layer in a roll-shaped manner, and the reel rotates at a speed of 10-50 rpm and is placed at room temperature for 6-24 hours. (3) Desizing: The pretreated polypropylene fabric is introduced into a continuous desizing and refining machine in a large roll for desizing. The speed is 50-100 m / min. The desizing and refining machine contains two material tanks, five water washing tanks, and one set of drying cylinders. The two material tanks are connected and filled with desizing treatment liquid. The temperature of the material tanks is set to 50-90°C, and the temperature of the five water washing tanks is set to 95 / 95 / 90 / 80 / 60°C respectively. Clean water is injected into the last water washing tank with a water flow rate of 1.5 t / h-2.5 t / h. The water flows back to the first water washing tank and is discharged; (4) Shaping and calendering treatment: The shaping equipment adopts a 9-section high-efficiency shaping machine, the shaping temperature is 120-160℃, the speed is 50-90m / min, and the shaping width is about 5% less than the refined cloth width; a high-pressure eight-roll calender is used, the speed is 10-40m / min, the pressure is 5-8mPa, the speed is 10-40m / min, and the unwinding adopts constant tension unwinding.

2. According to claim 1, a production process of a low-energy consumption ribbon trademark material is characterized in that: The specification of the polypropylene yarn in step (1) is one of 50D, 68D, 75D, 100D and 150D; the components of the cold stacking treatment liquid in step (2) are 25-45g / L soda ash, 0.5%-2% of the weight of the fabric dioctyl adipate, and 0.5-2g / L sodium dodecylbenzene sulfonate; the components of the desizing treatment liquid in step (3) are 2-8g / L dibutyl decanoate, 8-10g / L NaOH, 2-5g / L desizing aid, and 2-5g / L chelating dispersant.

3. The production process of a low-energy consumption ribbon trademark material according to claim 2, characterized in that: The desizing aid is one or more of a penetrant, a wetting agent, a detergent, and a refining agent, and the chelating dispersant is one or more of sodium gluconate, sodium ethylenediamine di-o-hydroxyphenyl acetate, and hydroxyethylidene diphosphonic acid.

4. The production process of a low-energy consumption ribbon trademark material according to claim 1, characterized in that: The modified polypropylene fiber is composed of the following components in parts by weight: 30-50 parts of polypropylene, 20-45 parts of polypropylene resin, 10-25 parts of acrylic acid, 1-5 parts of initiator and 5-10 parts of auxiliary agent.

5. The production process of a low-energy consumption ribbon trademark material according to claim 4, characterized in that: The auxiliary agent is at least one of an antioxidant, a light stabilizer, a heat stabilizer, a colorant, or an inorganic filler, and the initiator is azobisisobutyronitrile.

6. The production process of a low-energy consumption ribbon trademark material according to claim 4, characterized in that: The preparation method of the modified polypropylene fiber comprises the following steps: S1, mixing polypropylene, polypropylene resin, acrylic acid, initiator and additives in a mixer according to a certain proportion, and stirring them evenly with a stirrer to obtain a mixture 1; S2, placing the mixture 1 in a closed container, charging it with liquid ammonia, increasing the pressure to 8-12 MPa, maintaining the pressure for 15-25 minutes, then releasing the pressure instantly, removing the liquid ammonia until the pressure in the closed container drops to 133 Pa, and obtaining the crystal-modified polypropylene; S3, adding the modified polypropylene fiber of step S2 into a twin-screw extruder for melt extrusion and granulation to obtain the required particles, and then drying the particles in a dryer to obtain spinning raw materials; S4. After the spinning raw material obtained in step S3 is cooled, drawn, curled, oiled, heat-set, cut and packaged, a modified polypropylene fiber with high temperature resistance can be obtained.

7. The production process of a low-energy consumption ribbon trademark material according to claim 6, characterized in that: In step S2, liquid ammonia is removed by an evaporation method combining heating and vacuum pumping in parallel; in step S3, the speed of the twin-screw extruder is 800-1000 r / min; in step S3, the set temperature of the dryer is 100-120° C., and the drying time is 3-6 hours.