A process for imparting fragrance to a wax-imitating cloth

Abstract

The application relates to the technical field of wax-imitating cloth processing, and particularly discloses a fragrance-enhancing process for wax-imitating cloth, which comprises the following steps: (1) pretreatment, taking fabric raw materials, performing surface sanding, sequentially performing washing treatment, preshrinking treatment and softening treatment, and then drying; (2) printing, obtaining printed fabric; (3) post-treatment, performing steaming, open-width washing and drying and embossing on the printed fabric, and then obtaining wax-imitating cloth semi-product; and (4) fragrance enhancement, performing two-dip-two-roll treatment on the wax-imitating cloth semi-product obtained in the step (3) by using a fragrance finishing liquid, and then performing solidification drying, and finally obtaining wax-imitating cloth product; the fragrance finishing liquid comprises the following components in parts by weight: 3-5 parts of microcapsule essence; 30-40 parts of water-based UV resin; 0.5-2 parts of photoinitiator; 1-4 parts of wetting dispersant; 3-5 parts of softening agent; and 90-100 parts of water. The wax-imitating cloth product disclosed by the application can exhibit relatively long-lasting fragrance retention performance, and the microcapsule essence on the surface of the wax-imitating cloth product is not prone to relatively large loss caused by falling off after multiple water washings.

Description

Technical Field

[0001] This application relates to the field of wax-like fabric processing technology, and more specifically, it relates to a fragrance-enhancing process for wax-like fabric. Background Technology

[0002] Wax-coated fabric, used as a clothing material, is mainly distributed in the ethnic minority areas of southwest my country, Southeast Asia, and West Africa. Originating in China, it has a history of over 3,000 years. Due to its unique patterns and colors, wax-coated fabric is widely used in the production of various garments, including casual wear, mid-range clothing, and special occasion clothing such as women's, men's, and children's wear. These garments are not only beautiful and stylish but also very durable.

[0003] As people's living standards improve, the basic functions of textiles such as covering, warmth, and decoration are far from meeting consumer needs, leading to a shift in textile development towards enhanced functionality. Introducing aromatic components into waxed fabrics not only regulates emotions and promotes physical and mental well-being but also provides antibacterial and deodorizing effects. Currently, commonly used aromatic components are primarily encapsulated in microcapsules and then fixed onto the fabric through finishing processes, effectively improving the slow-release properties of the aromatic components.

[0004] However, due to the poor affinity between microcapsule fragrances and fabric fibers, adhesives are usually used to bond microcapsule fragrances to fabrics. Among them, room temperature curing adhesives are the most commonly used. However, these adhesives have poor water resistance and are prone to a decrease in adhesion during the washing process of the imitation waxed fabric, resulting in a large loss of microcapsule fragrances and thus affecting the subsequent use effect of the imitation waxed fabric.

[0005] Therefore, there is an urgent need to propose a solution to address the aforementioned technical problems. Summary of the Invention

[0006] In order to reduce the loss of microcapsule fragrance during the washing process of imitation wax fabric and to make the imitation wax fabric have a more lasting and excellent performance, this application provides a fragrance-enhancing process for imitation wax fabric.

[0007] This application provides a fragrance-enhancing process for imitation waxed cloth, employing the following technical solution:

[0008] A fragrance-enhancing process for imitation waxed cloth, characterized by comprising the following steps:

[0009] (1) Pretreatment: The fabric raw material is first brushed on the surface, then washed, pre-shrinked and softened in sequence, and then dried.

[0010] (2) Printing: The dried fabric raw material in step (1) is printed to obtain printed fabric;

[0011] (3) Post-processing: The printed fabric obtained in step (2) is steamed, washed in flat width, dried and embossed to obtain a semi-finished product of imitation waxed fabric.

[0012] (4) Fragrance enhancement: The semi-finished imitation wax cloth obtained in step (3) is subjected to two dips and two rubbing treatments with fragrance finishing liquid, and then cured and dried to obtain the finished imitation wax cloth.

[0013] The fragrance finishing liquid contains the following components in parts by weight:

[0014] 3-5 parts of microcapsule flavoring;

[0015] 30-40 parts of water-based UV resin;

[0016] Photoinitiator 0.5-2 parts;

[0017] 1-4 parts of wetting and dispersing agent;

[0018] 3-5 parts fabric softener;

[0019] 90-100 parts water.

[0020] By adopting the above technical solution, after the semi-finished wax-like fabric undergoes two dips and two nips in the fragrance finishing solution, it is cured by water-based UV resin under the action of a photoinitiator and external UV light. This forms a cured film on the surface of the wax-like fabric, encapsulating and anchoring the microcapsule fragrance, thus fixing the microcapsule fragrance to the surface of the wax-like fabric. The combined effect of the wetting and dispersing agents and softeners during the process allows the fragrance finishing solution to spread more easily on the surface of the wax-like fabric, resulting in a more uniform and dense cured film structure that provides a more stable fixation for the microcapsule fragrance. Simultaneously, the relatively soft texture of the cured film better adapts to the structure of the wax-like fabric and allows it to exert its corresponding function. The finished wax-like fabric obtained in this application exhibits relatively long-lasting fragrance retention after multiple washes, with minimal loss of the microcapsule fragrance on its surface.

[0021] Preferably, the waterborne UV resin is a waterborne polyurethane acrylate resin with a solid content of 60-80% and an average molecular weight of 15,000-20,000.

[0022] By adopting the above technical solution and selecting the above-specified waterborne polyurethane acrylate resin as the waterborne UV resin, the cured film formed not only has high abrasion resistance, adhesion, flexibility, high peel strength and excellent low temperature resistance, and is not easily damaged during water washing, but also exhibits good affinity and dispersion properties with the imitation wax fabric structure. In the curing film formation process, it is easy to encapsulate and fix microcapsule fragrances, thereby making the final imitation wax fabric exhibit better water resistance and more durable and excellent performance.

[0023] Preferably, in step (4), during the curing and drying process, the UV light power is 600-800W and the time is 4-6min.

[0024] By adopting the above technical solution and selecting the above parameters, a more suitable film-forming speed can be obtained according to the characteristics of the imitation wax fabric and the microcapsule fragrance, so that the formed cured film is uniform, dense and continuous, and exhibits excellent water resistance and more stable fixation of microcapsule fragrance; however, if the curing speed is too fast or too slow, it will affect the structure of the cured film and the bonding between the cured film and the imitation wax fabric and the microcapsule fragrance, resulting in a reduction in the water resistance of the finished imitation wax fabric.

[0025] Preferably, the aromatic finishing liquid also contains 3-7 parts by weight of a regulating agent, which is composed of carbon nanotubes and coconut shell fibers, and the weight ratio of the carbon nanotubes to the coconut shell fibers is (1.6-2.7):1.

[0026] By adopting the above technical solution, the regulating agent composed of carbon nanotubes and coconut shell fibers not only improves the structure of the cured film but also provides better protection for the microcapsule fragrance during washing. Due to the high affinity between coconut shell fibers and the imitation waxed fabric, the two can form a tight and stable structure. The well-developed pore structure of the coconut shell fibers allows for the adsorption and containment of the microcapsule fragrance. Furthermore, the high permeability and pore repair effect of carbon nanotubes ensure that some of the microcapsule fragrance remains stably within the coconut shell fibers after the water-based UV resin has cured into a film. Simultaneously, the interactive network structure formed by carbon nanotubes and coconut shell fibers also hinders the detachment of the microcapsule fragrance. Thus, during the washing process of the imitation waxed fabric, the loss rate of microcapsules is further reduced, and the long-lasting fragrance effect of the imitation waxed fabric is significantly improved.

[0027] Preferably, the weight ratio of the carbon nanotubes to coconut shell fibers is 2:1.

[0028] By adopting the above technical solution, the carbon nanotubes and coconut shell fibers in the above weight ratio can achieve better compounding effect when applied, which significantly improves the structure of the cured film. At the same time, the combination of the two has a more obvious protective effect on the microcapsule fragrance, thus obtaining a wax-like cloth with excellent water resistance and long-lasting fragrance effect.

[0029] Preferably, the carbon nanotubes have a diameter of 30-50 nm and a length of 100-300 nm; the coconut shell fibrils have a diameter of 80-200 μm and a length of 800-1200 μm.

[0030] By adopting the above technical solution, the carbon nanotubes and coconut shell fibers of the above specifications form a relatively uniform and dense network structure in the cured film, which has a better network fixing effect on the microcapsule fragrance dispersed in the cured film. On the other hand, after accommodating some microcapsule fragrance in the internal pores of the coconut shell fibers, the sealing and binding properties of the carbon nanotubes are also relatively high. In this way, the water resistance improvement effect brought about by the application of the regulating additives can be more significant.

[0031] Preferably, the microcapsule flavoring is pretreated before use, and the specific steps are as follows:

[0032] Microcapsule fragrance is added to the cellulose fiber spinning solution, mixed evenly, degassed, and then spun to obtain pretreated microcapsule fragrance.

[0033] By adopting the above technical solution, the pretreated microcapsule fragrance obtained in the above operation contains microcapsule fragrance encapsulated by cellulose. Cellulose has a high affinity for both coconut shell fibrils and the imitation waxed fabric structure. Therefore, the pretreated microcapsule fragrance can partially enter the pore structure of the coconut shell fibrils and become entangled with them, thus stably existing in the network structure formed by carbon nanotubes and coconut shell fibrils, and tightly bonded to the imitation waxed fabric structure. This further reduces the loss of microcapsule fragrance during the washing process of the resulting imitation waxed fabric, significantly improving its application quality.

[0034] Preferably, the microcapsule fragrance has a particle size of 2-13 μm and a spinning diameter of 10-30 μm.

[0035] By adopting the above technical solution, the microcapsule fragrances of the aforementioned particle size can be more evenly dispersed in the cellulose fiber spinning solution during application, and maintain a more uniform and stable distribution during spinning, thereby obtaining pretreated microcapsule fragrances of better quality. Furthermore, the selection of spinning specifications can achieve better synergy with carbon nanotubes and coconut shell fibers, resulting in higher quality imitation waxed fabric.

[0036] Preferably, the wall material used for the microcapsule flavor is one or a combination of several of gum arabic, sodium alginate, carrageenan, dextrin, oligosaccharides and starch derivatives.

[0037] Preferably, the core material used in the microcapsule fragrance is a combination of one or more of floral fragrances, fruit fragrances, and essential oils.

[0038] By adopting the above technical solution, the microcapsule fragrances obtained by combining the wall material and the core material can be applied to the fragrance finishing liquid, and after being fixed on the imitation waxed fabric, they can exert an excellent and stable fragrance release effect.

[0039] In summary, this application has the following beneficial effects:

[0040] 1. Because this application uses water-based UV resin to form a cured film on the surface of the imitation wax fabric under the action of a photoinitiator and external UV light, the microcapsule fragrance is encapsulated and anchored. The combined action of wetting and dispersing agents and softeners makes the cured film structure more uniform and dense and can form a more stable fixation on the microcapsule fragrance. As a result, after multiple washes, the microcapsule fragrance on the surface of the finished imitation wax fabric is less likely to fall off and be lost, and it can exhibit a more lasting fragrance retention performance.

[0041] 2. The present application uses a conditioning agent composed of carbon nanotubes and coconut shell fibers in the fragrance finishing liquid, which not only improves the structure of the cured film, but also provides better water washing protection for the microcapsule fragrance. During the water washing process of the imitation wax cloth, the loss rate of microcapsules will be further reduced.

[0042] 3. In this application, microcapsule fragrance is added to the spinning solution of cellulose fiber to obtain pretreated microcapsule fragrance. During the application process, the pretreated microcapsule fragrance can partially enter the pore structure of coconut shell fiber and become entangled with the coconut shell fiber, thus stably existing in the network structure formed by carbon nanotubes and coconut shell fiber, and tightly combined with the imitation wax fabric structure, so that the loss of microcapsule fragrance during the washing process of the obtained imitation wax fabric is further reduced. Detailed Implementation

[0043] The present application will be further described in detail below with reference to the embodiments.

[0044] Unless otherwise specified, all raw materials used in the preparation examples and embodiments of this application are commercially available.

[0045] The photoinitiator was purchased from Weijiuri JRCURE-1055 photoinitiator;

[0046] The wetting and dispersing agent was purchased from Evonik Dispersant TEGO Dispers 760W;

[0047] The fabric softener was purchased from Steward SW-2280;

[0048] The cellulose fiber spinning solution is obtained by mixing cellulose pulp with a degree of polymerization of 1000 as raw material and N-methylmorpholine (NMMO) aqueous solution as solvent at a weight ratio of 1:15.

[0049] Preparation examples of raw materials and / or intermediates

[0050] Preparation Example 1

[0051] A pretreated microcapsule flavoring is prepared by the following steps:

[0052] Microcapsule fragrance is added to the cellulose fiber spinning solution, mixed evenly, degassed, and then spun to obtain pretreated microcapsule fragrance.

[0053] Note: The weight ratio of microcapsule flavor to cellulose in the pretreated microcapsule flavor is 1:1; the particle size of the microcapsule flavor is 7μm; and the spinning diameter is 20μm.

[0054] Preparation Example 2

[0055] A pretreated microcapsule flavoring differs from Preparation Example 1 in that the microcapsule flavoring has a particle size of 2 μm and a spinning diameter of 10 μm.

[0056] Preparation Example 3

[0057] A pretreated microcapsule flavoring differs from Preparation Example 1 in that the microcapsule flavoring has a particle size of 13 μm and a spinning diameter of 30 μm.

[0058] Example

[0059] Example 1

[0060] A fragrance-enhancing process for imitation waxed fabric, the raw materials and corresponding weights of the fragrance finishing liquid used are shown in Table 1, and the process includes the following steps:

[0061] (1) Pretreatment: The fabric raw material is first brushed on the surface, then washed, pre-shrinked and softened in sequence, and then dried.

[0062] (2) Printing: The dried fabric raw material in step (1) is printed to obtain printed fabric;

[0063] (3) Post-processing: The printed fabric obtained in step (2) is steamed, washed in flat width, dried and embossed to obtain a semi-finished product of imitation waxed fabric.

[0064] (4) Fragrance enhancement: The semi-finished imitation wax cloth obtained in step (3) is subjected to two dips and two rubbing treatments with fragrance finishing liquid, and then cured and dried to obtain the finished imitation wax cloth.

[0065] Note: The fragrance finishing liquid is obtained by mixing and stirring the raw materials. The wall material of the microcapsule fragrance in the raw materials is β-cyclodextrin, the core material is lavender fragrance, and the weight ratio of the wall material to the core material is 1:2; the water-based UV resin is water-based polyurethane acrylate resin with a solid content of 70% and an average molecular weight of 17,500; the washing treatment in step (1) is as follows: first, wash with hot water at 65°C for 20 min, then wash with cold water at 25°C for 10 min, then wash with acid at 30°C with an acid concentration of 1.5% for 10 min, then wash with cold water at 25°C for 5 min, then wash with acid at 30°C with an alkali concentration of 1.5% for 10 min, and finally wash with cold water at 25°C. 5 min; the washing and pre-shrinking treatment in step (1) is steam pre-shrinking treatment for 20 min; the softening treatment in step (1) uses a softener of 3% of the weight of the fabric raw material, a bath ratio of 1:25, a water temperature of 45℃, a pH value of 7, and a soaking time of 50 min; the steaming in step (3) is saturated steam temperature of 105℃ and steaming time of 8 min; in step (4), the padding rate of the two dips and two nips is 80%, the first dip time is 5 min, and the second dip time is 3 min; in step (4), the UV light power is 700W and the time is 5 min during the curing and drying process.

[0066] Example 2-3

[0067] A fragrance-enhancing process for imitation waxed cloth differs from Example 1 in that the raw materials and their corresponding weights for the fragrance finishing liquid used in the preparation are shown in Table 1.

[0068] Table 1. Raw materials and their weight parts (kg / part) for the fragrance finishing liquids in Examples 1-3

[0069] raw material Example 1 Example 2 Example 3 Microcapsule flavoring 4 3 5 Waterborne UV resin 35 30 40 Photoinitiator 1.25 0.5 2 wetting and dispersing agents 2.5 1 4 softener 4 3 5 water 95 90 100

[0070] Example 4

[0071] A fragrance-enhancing process for imitation waxed cloth differs from Example 1 in that the waterborne UV resin is a waterborne polyurethane acrylate resin with a solid content of 60% and an average molecular weight of 15,000.

[0072] Example 5

[0073] A fragrance-enhancing process for imitation waxed cloth differs from Example 1 in that the waterborne UV resin is a waterborne polyurethane acrylate resin with a solid content of 80% and an average molecular weight of 20,000.

[0074] Example 6

[0075] A fragrance-enhancing process for imitation wax cloth differs from that in Example 1 in that, in step (4), the UV light power is 600W and the time is 6min during the curing and drying process.

[0076] Example 7

[0077] A fragrance-enhancing process for imitation wax cloth differs from Example 1 in that, in step (4), the UV light power is 800W and the time is 4min during the curing and drying process.

[0078] Example 8

[0079] A fragrance-enhancing process for imitation wax cloth differs from that in Example 1 in that, in step (4), the UV light power is 500W and the time is 5min during the curing and drying process.

[0080] Example 9

[0081] A fragrance-enhancing process for imitation wax cloth differs from that in Example 1 in that, in step (4), the UV light power is 900W and the time is 5min during the curing and drying process.

[0082] Example 10

[0083] A fragrance-enhancing process for imitation waxed fabric differs from Example 1 in that the fragrance finishing liquid contains 5 parts by weight of a regulating agent. This regulating agent is composed of carbon nanotubes and coconut shell fibers in a weight ratio of 2:1. The carbon nanotubes used have a diameter of 40 nm and a length of 200 nm; the coconut shell fibers have a diameter of 140 μm and a length of 1000 μm.

[0084] Example 11

[0085] A fragrance-enhancing process for imitation wax cloth differs from that in Example 10 in that the amount of adjusting agent added is 3 parts by weight.

[0086] Example 12

[0087] A fragrance-enhancing process for imitation wax cloth differs from that in Example 10 in that the amount of adjusting agent added is 7 parts by weight.

[0088] Example 13

[0089] A fragrance-enhancing process for imitation waxed cloth differs from that of Example 10 in that the modifier is composed of carbon nanotubes and coconut shell fibers in a weight ratio of 2.1:1.

[0090] Example 14

[0091] A fragrance-enhancing process for a wax-like cloth differs from that of Example 10 in that the modifier is composed of carbon nanotubes and coconut shell fibers in a weight ratio of 1.6:1.

[0092] Example 15

[0093] A fragrance-enhancing process for imitation waxed cloth differs from that of Example 10 in that the modifier is composed of carbon nanotubes and coconut shell fibers in a weight ratio of 2.7:1.

[0094] Example 16

[0095] A fragrance-enhancing process for imitation wax cloth differs from that in Example 10 in that the carbon nanotubes used have a diameter of 30 nm and a length of 100 nm; and the coconut shell fibers have a diameter of 80 μm and a length of 800 μm.

[0096] Example 17

[0097] A fragrance-enhancing process for imitation wax cloth differs from that in Example 10 in that the carbon nanotubes used have a diameter of 50 nm and a length of 300 nm; and the coconut shell fibers have a diameter of 200 μm and a length of 1200 μm.

[0098] Example 18

[0099] A fragrance-enhancing process for a wax-like fabric differs from that of Example 10 in that the conditioning agent does not contain carbon nanotubes.

[0100] Example 19

[0101] A fragrance-enhancing process for imitation waxed cloth differs from that of Example 10 in that the conditioning agent does not contain coconut shell fibers.

[0102] Example 20

[0103] A fragrance enhancement process for imitation waxed cloth differs from that of Example 10 in that the microcapsule fragrance is replaced with the pretreated microcapsule fragrance obtained in Preparation Example 1, and the length is selected to be 200 μm when applied, while the microcapsule fragrance of the fragrance finishing liquid remains the same.

[0104] Example 21

[0105] A fragrance enhancement process for a wax-like cloth differs from that of Example 20 in that the pretreated microcapsule fragrance is obtained from Preparation Example 2.

[0106] Example 22

[0107] A fragrance enhancement process for a wax-like cloth differs from that of Example 20 in that the pretreated microcapsule fragrance is obtained from Preparation Example 3.

[0108] Comparative Example

[0109] Comparative Example 1

[0110] A fragrance-enhancing process for imitation waxed cloth differs from Example 1 in that the water-based UV resin is replaced with a room-temperature curing adhesive, namely water-based acrylic emulsion adhesive JL-5030A. Furthermore, the fragrance finishing liquid obtained in this case does not require UV light treatment during the curing and drying process.

[0111] Performance testing

[0112] Test samples: Polyester fabric was selected as the fabric raw material, and then processed using the fragrance-enhancing process of the imitation waxed fabric in Examples 1-22 and Comparative Example 1. The same printing process was used in the process to obtain test samples 1-22 and control sample 1.

[0113] Experimental methods: (1) Extraction of fragrance from microcapsules: Take 1g of microcapsule fragrance and add 80ml of anhydrous ethanol to a 100ml round bottom flask. Reflux in a constant temperature water bath at 80℃ for 1h. After obtaining the extract, filter and dilute with anhydrous ethanol to a 100ml volumetric flask to obtain a 10g / L microcapsule fragrance extract.

[0114] Extraction of fragrance from imitation wax cloth: Take 2.5g of imitation wax cloth, cut it into pieces and place it in a 100ml round bottom flask. Add 80ml of anhydrous ethanol and reflux in a constant temperature water bath at 80℃ for 1h. After obtaining the extract, filter it and dilute it to a 100ml volumetric flask with anhydrous ethanol.

[0115] (2) The amount of fragrance retained on the imitation waxed cloth was determined by ultraviolet spectrophotometry. 1 ml, 2.5 ml, 5 ml, 7.5 ml and 10 ml of microcapsule fragrance extract were transferred to 100 ml volumetric flasks to obtain microcapsule fragrance standard solutions of 0.1 g / L, 0.25 g / L, 0.5 g / L, 0.75 g / L and 1 g / L respectively. The absorbance of the standard solutions was measured with ethanol as a reference solution, and a concentration-absorbance standard curve was plotted.

[0116] The absorbance of the extracted fragrance on the imitation waxed fabric was measured, and the concentration of the microcapsule fragrance was obtained according to the standard curve. The content of microcapsule fragrance per gram of fabric was then calculated.

[0117] (3) Water resistance test of imitation waxed cloth. The water washing method is in accordance with ISO 3679 "Household water washing test standard". The test is conducted under 5A conditions. The water level is when the washing machine is empty and the bottom of the washing machine is 15cm away from the water surface. The detergent used is Hongda AEO-7, with a dosage of 2g / L. The water washing program is 25min washing, 5min rinsing, 5min spin drying, and air drying. The washing temperature is 40℃.

[0118] (4) First, the microcapsule fragrance content per gram of fabric of experimental samples 1-22 and control sample 1 is obtained according to the contents of (1) and (2), and recorded as A1; then, after the water washing test in (3) is performed on experimental samples 1-22 and control sample 1, the microcapsule fragrance content per gram of fabric is obtained according to the contents of (1) and (2), and recorded as A2; finally, the microcapsule fragrance loss rate is calculated. Microcapsule fragrance loss rate (%) = (A1-A2) / A1. The larger the microcapsule fragrance loss rate, the worse the water resistance of the imitation wax fabric and the worse the retention of microcapsule fragrance after water washing.

[0119] Table 2 Test results of test samples 1-22 and control sample 1

[0120]

[0121]

[0122] As can be seen from Examples 1-3 and Comparative Example 1, and Table 2, compared with the use of room temperature curing adhesives, this application, through the application of water-based UV resin and the combined effect of wetting and dispersing agents and softeners, obtains a high-performance cured film that encapsulates and anchors the microcapsule fragrance. This significantly reduces the loss rate of the microcapsule fragrance after the finished wax-like fabric is washed, resulting in a more lasting fragrance effect.

[0123] Combining Examples 1 and 4-5 with Table 2, it can be seen that using waterborne polyurethane acrylate resin as the waterborne UV resin, with a solid content of 60-80% and an average molecular weight of 15,000-20,000, can ensure the formation of a cured film with excellent water-wash resistance after application, thereby maintaining stable adhesion of the microcapsule fragrance and making the obtained wax-like cloth exhibit stable and better water resistance.

[0124] Combining Examples 1 and 6-9 with Table 2, it can be seen that selecting a UV light power of 600-800W and a time of 4-6 minutes during the curing and drying process is beneficial for obtaining a curing film of better quality. However, if the parameters are lower or higher than the above range, the measured loss rate of microcapsule fragrance will increase. This indicates that if the curing speed is too fast or too slow, it will affect the structure of the curing film and the bonding between the curing film and the imitation waxed fabric and the microcapsule fragrance.

[0125] Combining Examples 1 and 10-15 with Table 2, it can be seen that the addition of a conditioning agent composed of carbon nanotubes and coconut shell fibers can improve the stability of the cured film structure in a water-washing environment, thereby further reducing the loss rate of microcapsule fragrance after washing of the imitation wax cloth. Furthermore, when the weight ratio of carbon nanotubes to coconut shell fibers is 2:1, the final quality of the imitation wax cloth is better. Combining Examples 16-17 with Table 2, it can be seen that the diameter of the carbon nanotubes is 30-50 nm and the length is 100-300 nm; the diameter of the coconut shell fibers is 80-200 μm and the length is 800-1200 μm. Both of these conditions enable the conditioning agent to exert a stable effect after application. Combining Examples 18-19 with Table 2, it can be seen that when either carbon nanotubes or coconut shell fibers are used alone as a conditioning agent, the effect on reducing the loss rate of microcapsule fragrance is limited, and the combined effect of using either alone is far less than the superior effect of using them together.

[0126] As can be seen from Examples 1 and 20-22 and Table 2, the addition of microcapsule fragrance to the cellulose fiber spinning solution and its subsequent application in this application can further reduce the loss rate of microcapsule fragrance on the imitation waxed cloth. This is because the protective effect on the microcapsule fragrance is significantly improved after spinning.

[0127] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A fragrance-enhancing process for imitation waxed cloth, characterized in that, Includes the following steps: (1) Pretreatment: Take the fabric raw material, first perform surface brushing, then wash, pre-shrink and soften, and finally dry. (2) Printing: The dried fabric raw material in step (1) is printed to obtain printed fabric; (3) Post-processing: The printed fabric obtained in step (2) is steamed, washed in flat width, dried and embossed to obtain the imitation waxed fabric semi-finished product; (4) Fragrance enhancement: The semi-finished imitation wax cloth obtained in step (3) is subjected to two dips and two rubbing treatments with fragrance finishing liquid, then cured and dried to obtain the finished imitation wax cloth; The fragrance finishing liquid contains the following components in parts by weight: 3-5 parts of microcapsule flavoring; 30-40 parts of water-based UV resin; Photoinitiator 0.5-2 parts; 1-4 parts wetting and dispersing agent; 3-5 parts fabric softener; 90-100 parts water; The aromatic finishing liquid also contains 3-7 parts by weight of a regulating agent, which is composed of carbon nanotubes and coconut shell fibers, and the weight ratio of the carbon nanotubes to the coconut shell fibers is (1.6-2.7):

1. The carbon nanotubes have a diameter of 30-50 nm and a length of 100-300 nm; the coconut shell fibrils have a diameter of 80-200 μm and a length of 800-1200 μm. The microcapsule flavoring is pretreated before use, and the specific steps are as follows: Microcapsule fragrance is added to cellulose fiber spinning solution, mixed evenly, degassed, and then spun to obtain pretreated microcapsule fragrance. The microcapsule fragrance has a particle size of 2-13 μm; the spinning diameter is 10-30 μm. In step (4), during the curing and drying process, the UV light power is 600-800W and the time is 4-6min.

2. The fragrance-enhancing process for the imitation wax cloth according to claim 1, characterized in that: The waterborne UV resin is a waterborne polyurethane acrylate resin with a solid content of 60-80% and an average molecular weight of 15,000-20,000.

3. The fragrance-enhancing process for the imitation wax cloth according to claim 1, characterized in that: The weight ratio of the carbon nanotubes to coconut shell fibers is 2:

1.

4. The fragrance-enhancing process for the imitation wax cloth according to claim 1, characterized in that: The wall material used for the microcapsule flavor is one or a combination of several of gum arabic, sodium alginate, carrageenan, dextrin, oligosaccharides and starch derivatives.

5. The fragrance-enhancing process for the imitation wax cloth according to claim 1, characterized in that: The core material used in the microcapsule fragrance is a combination of one or more of the following: floral fragrance, fruity fragrance, and essential oil.

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