Hydrosol for embroidery cloth pretreatment, preparation method and embroidery cloth pretreatment process

Abstract

The hydrosol for pretreatment of the embroidery cloth is prepared from the following raw materials in parts by mass: 5 to 15 parts of starch, 10 to 30 parts of polyvinyl alcohol, 5 to 10 parts of cellulose derivatives, 2 to 8 parts of polyethylene glycol glycidyl ether, 1 to 3 parts of nanoparticles, 0.8 to 1.2 parts of xanthan gum and 40 to 60 parts of water. The hydrosol for pretreatment of the embroidery cloth is uniformly smeared on the embroidery cloth, and after the hydrosol is completely dried, the embroidery cloth is hardened so as to facilitate embroidery operation, a traditional paper packing process is replaced, and the problems that an existing paper feeding device of an embroidery machine consumes manpower and is low in efficiency are solved; meanwhile, the hydrosol provided by the invention has good water solubility, and can be completely removed through simple water washing operation after embroidery operation is completed.

Description

Technical Field

[0001] The invention belongs to the field of embroidery cloth pretreatment, and specifically relates to a hydrosol for embroidery cloth pretreatment, a preparation method and an embroidery cloth pretreatment process. Background Art

[0002] In the current embroidery process of embroidery machines, in order to ensure the strength and tension of the fabric, a layer of paper is usually placed where the embroidery is required. This layer of paper plays a vital role in ensuring that the fabric has sufficient support during the embroidery process to prevent the embroidered pattern from deforming or shrinking due to the fabric being too soft, which will not achieve the desired effect; in addition, the fabric piece needs to be glued to the operating table of the embroidery machine with double-sided tape to avoid problems such as embroidery needle dislocation caused by fabric shifting or slipping during the embroidery process, thereby ensuring the quality and beauty of the embroidery.

[0003] However, the existing embroidery machine paper feeding device has many problems in the paper feeding process. First, the paper feeding process is unstable, sometimes fast and sometimes slow, resulting in frequent paper shortages or accumulation during the embroidery process, which not only reduces the efficiency of embroidery, but also may cause the embroidery quality to decline. Secondly, the current embroidery machine paper feeding device is not equipped with a paper cutting device, so it needs to be cut manually every time, which consumes a lot of time on the one hand, and the size of the cut paper is uneven on the other hand, affecting the appearance and quality of the embroidery.

[0004] In traditional processes, paste is used to increase the stiffness of fabrics, but the smoothness of the fabric cannot be guaranteed after the paste is applied, which can easily affect the effect of embroidery. Hydrosol is a colloidal system formed by the dispersion of polymer compounds in water, which has good solubility and film-forming properties. Compared with traditional paste, hydrosol not only has better quick-drying properties, but also has better water solubility, which allows the hydrosol to be dissolved and removed through a simple water washing step after the embroidery is completed. However, there is no hydrosol specifically used for embroidery cloth processing in the prior art. Therefore, finding a hydrosol suitable for applying to embroidery cloth so that it can be directly embroidered, thereby eliminating the need for padding paper, has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The invention aims to solve the problem that the existing embroidery machine paper feeding device is labor-intensive and inefficient, and provides an embroidery cloth pretreatment hydrosol, a preparation method and an embroidery cloth pretreatment process, so as to avoid using pad paper in the embroidery process, thereby improving the working efficiency of the embroidery machine and improving the embroidery quality.

[0006] The purpose of the present invention is achieved by taking the following technical solutions: A hydrosol for pre-treatment of embroidery cloth comprises the following raw materials in parts by weight: 5-15 parts of starch, 10-30 parts of polyvinyl alcohol, 5-10 parts of cellulose derivatives, 2-8 parts of polyethylene glycol glycidyl ether, 1-3 parts of nanoparticles, 0.8-1.2 parts of xanthan gum, and 40-60 parts of water.

[0007] Preferably, the preparation comprises the following raw materials in parts by weight: 8-12 parts of starch, 15-25 parts of polyvinyl alcohol, 6-8 parts of cellulose derivatives, 4-6 parts of polyethylene glycol glycidyl ether, 2 parts of nanoparticles, 1 part of xanthan gum, and 45-55 parts of water.

[0008] Preferably, the starch is potato starch.

[0009] Preferably, the cellulose derivative is one or more of hydroxypropyl methylcellulose, methyl cellulose and carboxymethyl cellulose.

[0010] Preferably, the nanoparticles are one or more of silicon oxide and zinc oxide.

[0011] Based on the same inventive concept, the present invention also provides a method for preparing the embroidery cloth pre-treatment hydrosol, comprising the following steps: 1) adding polyvinyl alcohol to a portion of water, heating and stirring to completely dissolve it, to obtain a polyvinyl alcohol solution; 2) adding the cellulose derivative and xanthan gum to another portion of water, stirring to fully dissolve them, to obtain a first mixed solution; 3) mixing the polyvinyl alcohol solution and the first mixed solution, stirring to make them uniformly mixed, to obtain a second mixed solution; 4) gradually adding starch into the second mixed solution while stirring to make the mixture uniform, to obtain a third mixed solution; 5) adding polyethylene glycol glycidyl ether and nanoparticles into the third mixed solution, stirring to make the mixture uniform, and cooling to room temperature to obtain the embroidery cloth pretreatment aqueous sol.

[0012] Preferably, in step 1), the dissolution temperature of polyvinyl alcohol is 60-90°C.

[0013] Based on the same inventive concept, the present invention also provides an embroidery cloth pre-treatment process, wherein the embroidery cloth pre-treatment hydrosol is evenly applied on the embroidery cloth, and then the embroidery operation is performed.

[0014] Preferably, the embroidery cloth pre-treatment hydrosol is evenly applied on the embroidery cloth, and then the embroidery operation is performed after it is dried.

[0015] Preferably, the embroidery cloth pre-treatment hydrosol is evenly applied on the embroidery cloth, and hot air is blown to dry it thoroughly before the embroidery operation is performed.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The hydrosol for pretreatment of embroidery cloth of the present invention comprises the following raw materials in parts by weight: 5-15 parts of starch, 10-30 parts of polyvinyl alcohol, 5-10 parts of cellulose derivatives, 2-8 parts of polyethylene glycol glycidyl ether, 1-3 parts of nanoparticles, 0.8-1.2 parts of xanthan gum, and 40-60 parts of water. Among them, starch is a natural polysaccharide with good film-forming and thickening properties. In the hydrosol, starch can provide a certain viscosity and structural stability, and at the same time serve as a low-cost filler; polyvinyl alcohol is a water-soluble high molecular polymer with excellent film-forming and adhesion properties. It can provide the cohesion and mechanical strength of the hydrosol, enhance the stability and wear resistance of the hydrosol; the cellulose derivative can increase the viscosity and stability of the hydrosol. They help to improve the rheological properties and suspension capacity of the hydrosol; the polypropylene glycol glycidyl ether as a cross-linking agent can improve the cross-linking degree of polyvinyl alcohol, which helps to improve the mechanical properties and durability of the hydrosol; the nanoparticles can improve the wear resistance and antibacterial properties of the hydrosol and enhance the mechanical strength of the hydrosol; the xanthan gum has good gelling properties and can form a tough gel state. At the same time, the above substances have good water solubility, can be quickly dissolved in water, meet environmental protection requirements, and will not cause pollution to the environment.

[0017] 2. The embroidery cloth pretreatment hydrosol described in the present invention comprises potato starch, which has high water absorption, so that they can effectively absorb water during the sizing process, improve the stiffness and feel of the cloth, and potato starch is abundant in resources and relatively low in cost; the cellulose derivative is one or more of hydroxypropyl methylcellulose, methylcellulose, and carboxymethyl cellulose, which has good dispersibility and water solubility, and forms a gel system to improve the homogeneity of the hydrosol; the nanoparticles are one or more of silicon oxide and zinc oxide, which has good adhesion and certain antibacterial ability, and improves the stability of the hydrosol.

[0018] 3. The method for preparing the hydrosol for pre-treatment of embroidery cloth of the present invention is simple, convenient and labor-saving.

[0019] 4. The embroidery cloth pretreatment process of the present invention is to evenly apply the embroidery cloth pretreatment hydrosol on the embroidery cloth, wait for it to dry thoroughly, and harden the embroidery cloth so as to carry out the embroidery operation, which replaces the traditional paper padding process and avoids the problem of labor-intensive and inefficient paper feeding devices of existing embroidery machines; at the same time, the hydrosol provided by the present invention has good water solubility, and after the embroidery operation is completed, it can be completely removed by a simple water washing operation. DETAILED DESCRIPTION

[0020] The present invention has conducted a large number of comparative experiments by adjusting the above parameters. The present invention is further described by citing some embodiments below. These embodiments are used to illustrate the present invention, rather than to limit the present invention. Any improvement to the process of the present invention under the premise of the present invention belongs to the scope of protection of the present invention.

[0021] Example 1 The hydrosol for pre-treatment of embroidery cloth provided in this embodiment comprises the following raw materials in parts by weight: 10 parts of potato starch, 20 parts of polyvinyl alcohol, 8 parts of cellulose derivatives, 5 parts of polyethylene glycol glycidyl ether, 2 parts of nanoparticles, 1 part of xanthan gum, and 50 parts of water. The starch is potato starch, the cellulose derivative is carboxymethyl cellulose, and the nanoparticles are zinc oxide.

[0022] The method for preparing the embroidery cloth pretreatment hydrosol provided in this embodiment comprises the following steps: 1) Add polyvinyl alcohol to part of water, heat to 60°C and stir to completely dissolve it to obtain a polyvinyl alcohol solution; 2) adding carboxymethyl cellulose and xanthan gum to another portion of water, stirring to fully dissolve them, to obtain a first mixed solution; 3) mixing the polyvinyl alcohol solution and the first mixed solution, stirring to make them uniformly mixed, to obtain a second mixed solution; 4) gradually adding potato starch into the second mixed solution while stirring to make the mixture uniform, to obtain a third mixed solution; 5) adding polyethylene glycol glycidyl ether and zinc oxide into the third mixed solution, stirring to make the mixture uniform, and cooling to room temperature to obtain the embroidery cloth pretreatment aqueous sol.

[0023] Example 2-16 The hydrosols for pre-treatment of embroidery cloth provided in Examples 2 to 16 have formulas and preparation methods different from those in Example 1 as shown in the following table: Table 1 Raw material ratios and preparation parameters of Examples 2 to 16

[0024] Continued

[0025] Continued

[0026] Comparative Examples 1 to 3 The formula and preparation method of the hydrosol provided in Examples 1 to 3 are different from those in Example 6 as shown in the following table: Table 2 Raw material ratios and preparation parameters of Comparative Examples 1 to 3

[0027] Test Case The embroidery cloth pretreatment hydrosol described in Examples 1 to 16 was evenly applied to the embroidery cloth, and after it was completely dried, a sample of 25 cm in length and 5 cm in width was cut from the fabric, and its stiffness was tested using the inclined plane method. One end of the sample was fixed to one end of the test device, and the other end of the sample was allowed to hang freely to form a cantilever beam. The length of the free end of the sample was measured when it drooped to 20°. The test results are as follows: Table 3 Test results of Examples 1 to 16

[0028] The hydrosols described in Comparative Examples 1 to 3 were evenly applied on the embroidery cloth, and after drying, the stiffness was tested using the same method. The test results are as follows: Table 4 Test results of comparative examples 1 to 3

[0029] If the embroidery cloth is too soft, it is easy to shift, and if it is too hard, it will affect the needle movement. From the above test results, it can be seen that the embroidery cloth pre-treatment hydrosol provided in Examples 1 to 16 is applied on the embroidery cloth. After drying, the stiffness of the embroidery cloth is between 6.5 and 7.0, which is suitable for embroidery directly thereon. The hydrosol provided in Comparative Example 1 does not contain polyethylene glycol glycidyl ether, and the hydrosol provided in Comparative Example 2 does not contain nanoparticles, resulting in the embroidery cloth being too soft after drying. The hydrosol provided in Comparative Example 3 does not contain xanthan gum, resulting in the embroidery cloth being too hard after drying.

[0030] Embodiment 17 This embodiment provides an embroidery cloth pretreatment process, wherein the embroidery cloth pretreatment hydrosol described in embodiments 1-16 is evenly applied on the embroidery cloth, blown with hot air to dry it thoroughly, and then put into the embroidery machine for embroidery operation. The results show that the embroidery process is stable, the embroidery cloth does not move, and after the embroidery is completed, the embroidery cloth is washed and dried, and there is no hydrosol residue on the embroidery cloth, and the pattern is flat.

[0031] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A hydrosol for pre-treatment of embroidery cloth, characterized in that: The preparation method comprises the following raw materials in parts by weight: 5-15 parts of starch, 10-30 parts of polyvinyl alcohol, 5-10 parts of cellulose derivatives, 2-8 parts of polyethylene glycol glycidyl ether, 1-3 parts of nanoparticles, 0.8-1.2 parts of xanthan gum, and 40-60 parts of water.

2. The hydrosol for pre-treatment of embroidery cloth according to claim 1, characterized in that: The preparation method comprises the following raw materials in parts by weight: 8 to 12 parts of starch, 15 to 25 parts of polyvinyl alcohol, 6 to 8 parts of cellulose derivatives, 4 to 6 parts of polyethylene glycol glycidyl ether, 2 parts of nanoparticles, 1 part of xanthan gum, and 45 to 55 parts of water.

3. The hydrosol for pre-treatment of embroidery cloth according to claim 1, characterized in that: The starch is potato starch.

4. The hydrosol for pre-treatment of embroidery cloth according to claim 1, characterized in that: The cellulose derivative is one or more of hydroxypropyl methylcellulose, methylcellulose and carboxymethyl cellulose.

5. The hydrosol for pre-treatment of embroidery cloth according to claim 1, characterized in that: The nanoparticles are one or more of silicon oxide and zinc oxide.

6. A method for preparing the hydrosol for pre-treatment of embroidery cloth according to any one of claims 1 to 5, characterized in that: The following steps are involved: 1) adding polyvinyl alcohol to a portion of water, heating and stirring to completely dissolve it, to obtain a polyvinyl alcohol solution; 2) adding the cellulose derivative and xanthan gum to another portion of water, stirring to fully dissolve them, to obtain a first mixed solution; 3) mixing the polyvinyl alcohol solution and the first mixed solution, stirring to make them uniformly mixed, to obtain a second mixed solution; 4) gradually adding starch into the second mixed solution while stirring to make the mixture uniform, to obtain a third mixed solution; 5) adding polyethylene glycol glycidyl ether and nanoparticles into the third mixed solution, stirring to make the mixture uniform, and cooling to room temperature to obtain the embroidery cloth pretreatment aqueous sol.

7. The method for preparing the hydrosol for pre-treatment of embroidery cloth according to claim 6, characterized in that: In the step 1), the dissolution temperature of polyvinyl alcohol is 60-90°C.

8. A pre-treatment process for embroidery cloth, characterized in that: The embroidery cloth pretreatment hydrosol according to claims 1 to 5 is evenly applied on the embroidery cloth, and then the embroidery operation is performed.

9. The embroidery cloth pretreatment process according to claim 8, characterized in that: The embroidery cloth pretreatment hydrosol is evenly applied on the embroidery cloth, and then the embroidery operation is performed after it is completely dried.

10. The embroidery cloth pre-treatment process according to claim 8, characterized in that: The embroidery cloth pretreatment hydrosol is evenly applied on the embroidery cloth, and hot air is blown to dry it thoroughly before embroidery operation is performed.

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