Color-deepening clothing-protecting sheet, and preparation method and use method therefor

Abstract

The present invention relates to the technical field of clothing treatment aids. Provided are a color-deepening clothing-protecting sheet, and a preparation method and a use method therefor. The color-deepening clothing-protecting sheet comprises a carrier sheet and a base material, wherein the base material comprises, in parts by weight: 20-80 parts of a color-deepening agent and 5-20 parts of a quaternary ammonium salt surfactant. The quaternary ammonium salt surfactant can act on the color-deepening agent under stirring and heating conditions, so as to open long chains of molecules of the color-deepening agent. In the color-deepening clothing-protecting sheet, the quaternary ammonium salt surfactant is used as an auxiliary for opening molecular chains of the color-deepening agent in an anhydrous state, such that the color-deepening agent is attached to the surface of clothing, thereby achieving the effects of improving diffuse reflection of the clothing and increasing the color depth of the clothing.

Description

A kind of clothing protection sheet and its preparation method and use method Technical Field

[0001] The present invention relates to the technical field of clothing additives, and in particular to a clothing-depth-enhancing protective sheet and a preparation method and a use method thereof. Background Art

[0002] Over long-term use, clothing can become rough, hardened, and fade in color due to washing and wear, even causing dark colors to not darken deeply or black to not blacken. Although softeners can be used to soften and smooth clothing after washing, existing fabric protectors lack the ability to darken the fabric, leaving the problem of clothing becoming bleached and worn. The prior art only discloses reagents and methods for darkening fabrics or clothing before they leave the factory. For example, during the fabric finishing process, silicone oil or other darkening agents are used to treat the fabric to increase its diffuse reflection of light, thereby achieving a darkening effect. However, the existing reagents and methods for darkening fabrics are not suitable for darkening clothing after leaving the factory. This is because the darkening agents used for darkening fabrics are usually large-molecule silicone oils or modified silicone oils, acrylate polymers (weight-average molecular weight of tens of thousands to hundreds of thousands), and therefore need to be emulsified before use. For example, the darkening agent must be completely dispersed in water with an emulsifier before it can be evenly covered on the surface of the fabric. However, no emulsifier is added during daily laundry, so the darkening agent for fabrics cannot be used in daily laundry processes. In addition, since a large amount of emulsifier is required for emulsification of the darkening agent, the oil-emulsion ratio is as high as 4 to 6:1, and traditional emulsifiers are usually fatty alcohol polyoxyethylene ethers AEO-3 to 9, isomeric alcohol polyoxyethylene ethers TO3 to 8, nonylphenol polyoxyethylene ether NP-3 to 10, etc. These substances are difficult to be degraded by microorganisms or have a long degradation cycle. If used for household clothing treatment, the wastewater generated is directly discharged, which is likely to have an adverse impact on the environment.

[0003] It can be seen that the existing technology still needs to be improved and enhanced.

[0004] Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a darkening garment sheet and its preparation method and use method, aiming to solve the defect that the existing darkening agents used for fabric finishing cannot be used for daily darkening treatment of old clothes.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A darkening garment sheet comprises a carrier sheet and a base material, wherein the base material comprises, by weight, 20 to 80 parts of a darkening agent and 5 to 20 parts of a quaternary ammonium surfactant; the quaternary ammonium surfactant can act on the darkening agent under stirring and heating conditions to open the long chains of the darkening agent molecules.

[0008] In the darkening and protective clothing sheet, the quaternary ammonium salt surfactant is selected from a combination of one or more of fatty acid amide ethoxy quaternary ammonium salt, fatty acid imidazoline quaternary ammonium salt, and fatty acid ester quaternary ammonium salt.

[0009] In the aforementioned darkening garment protecting sheet, the darkening agent is selected from one or a combination of silicone oil, modified silicone oil, and acrylic ester polymer.

[0010] In the depth-enhancing clothing sheet, the carrier sheet is a sheet prepared from one or more of modified starch, modified cellulose or hemicellulose, and modified lignin.

[0011] In the depth-enhancing garment protection sheet, the weight ratio of the carrier sheet to the base material is 1:(1-10).

[0012] In the depth-enhancing garment protection sheet, the base material further comprises fragrance and fragrance carrier.

[0013] In the darkening garment-protecting sheet, the fragrance carrier is kaolin or clay.

[0014] In the depth-enhancing garment-protecting sheet, the base material comprises 0.1 to 50 parts of fragrance and 5 to 30 parts of fragrance carrier, calculated by weight.

[0015] The preparation method of the depth-enhancing garment protection sheet as described above comprises the following steps: taking a depth-enhancing agent, heating it to melt it; adding a quaternary ammonium surfactant to the molten depth-enhancing agent, stirring and mixing it; then adding a fragrance carrier, stirring and mixing it; adjusting the material temperature to 50-70°C, adding fragrance, stirring it evenly, and obtaining a molten base material; immersing the cut carrier sheet in the molten base material for 10-30 seconds, pulling it out, flattening it with a 10-70 mesh roller, and cooling and forming it to obtain a depth-enhancing garment protection sheet.

[0016] A method for using a color-enhancing garment sheet, wherein the color-enhancing garment sheet is the color-enhancing garment sheet described above, and the method for using the color-enhancing garment sheet is to add the color-enhancing garment sheet to a clothes drying process to make the clothes brighter in color. Beneficial effects:

[0017] The present invention provides a color-darkening garment sheet and its preparation and use methods. The color-darkening garment sheet comprises a quaternary ammonium surfactant added to a color-darkening agent. The quaternary ammonium surfactant can open the molecular chains of the color-darkening agent in an anhydrous state. The color-darkening agent, after opening the molecular chains, acts on the surface of clothing during the drying process, thereby enhancing diffuse reflection of the clothing and thereby deepening the color of the clothing. Furthermore, the color-darkening agent and the quaternary ammonium surfactant can make clothing softer, smoother, and fluffier, providing a care effect on the clothing. DETAILED DESCRIPTION

[0018] The present invention provides a garment-depth-enhancing sheet and a method for preparing and using the sheet. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail with reference to the following examples. It should be understood that the specific examples described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0019] A preferred embodiment of the present invention provides a darkening garment sheet, which includes a carrier sheet and a base material attached to the carrier sheet. The base material includes a quaternary ammonium salt surfactant and a darkening agent. The base material includes, by weight, 20 to 80 parts of the darkening agent and 5 to 20 parts of the quaternary ammonium salt surfactant. The quaternary ammonium salt surfactant can act on the darkening agent under stirring and heating conditions to open the molecular chain of the darkening agent. The darkening agent after the molecular chain is opened can directly adhere to the surface of the clothing during subsequent use, thereby improving the diffuse reflection of light by the clothing, thereby playing a role in deepening and brightening the color. At the same time, the darkening agent and the quaternary ammonium salt surfactant can both repair fibers, making the clothing soft, fluffy, and smooth.

[0020] Because existing deepening agent need just can be used by emulsifying agent emulsification, yet need add a large amount of water in emulsifying process, cause the content of active ingredient in the deepening agent finished product of making to reduce 50~85%, therefore contain a large amount of water in commercially available deepening agent emulsion, greatly increased transportation cost, and owing to containing a large amount of emulsifiers, can only be used for the color deepening of fabric usually, can not be used for the color deepening of daily clothes.And in the present embodiment, by adding quaternary ammonium salt surfactant in deepening agent, utilize quaternary ammonium salt surfactant and deepening agent to interact after melting, under anhydrous state, the molecular chain of deepening agent is opened, and form solid-state tablet, compared to the existing deepening agent emulsion for fabric, active ingredient content is high, transportation cost is low, storage time is longer, and is no longer limited to use when fabric finishing, can also use in clothes drying process, realize the effect that wearing old whitish ready-made clothes is deepened.

[0021] In the aforementioned deepening garment sheet, the deepening agent is selected from one or a combination of silicone oil, modified silicone oil, and acrylic ester polymer, all of which are macromolecular long-chain compounds; the quaternary ammonium salt surfactant can be a diamide ethyl alkoxy quaternary ammonium compound, a dialkyl dimethyl quaternary ammonium compound, an ester quaternary ammonium compound, an amide ethyl alkyl imidazoline quaternary ammonium compound, etc. The quaternary ammonium salt surfactant can open the molecular chain of the molten deepening agent during preparation, so that when it acts on clothing, the deepening agent can better adhere to the surface of the clothing. Specifically: when preparing the clothing protection sheet, the quaternary ammonium salt surfactant can react with the darkening agent in a molten state, and its hydrophobic end can be combined with silicone oil, modified silicone oil or acrylate polymer. Under the action of stirring, the molecular chains of silicone oil, modified silicone oil and acrylate polymer are opened, and can be better dispersed in the material, which is equivalent to the darkening agent being dispersed in water under the action of an emulsifier. Therefore, in the subsequent use process, it can be used without the action of an emulsifier; and when in use, through the heating effect of drying clothes, the cationic part of the quaternary ammonium salt surfactant will interact with the anion of the clothing fiber and enter the interior of the clothing fiber, which plays a role in repairing the fiber and making the fiber more supple; and the high molecular darkening agent will adhere to and stay on the surface of the fiber along with the quaternary ammonium salt surfactant, and be shaped under the high temperature of the dryer. These darkening agents can increase the diffuse reflection of clothing, thereby increasing the depth of clothing color, making dark colors deeper and light colors brighter.

[0022] But, though aforesaid quaternary ammonium salt surfactant can act on the deepening agent, its poor biodegradability is unfriendly to environment.To this, in a kind of preferred embodiment, described quaternary ammonium salt surfactant is selected from one or more combinations in fatty acid amide ethoxy quaternary ammonium salt, fatty acid imidazoline quaternary ammonium salt, fatty acid ester group quaternary ammonium salt, these quaternary ammonium salt surfactants are that raw material prepares with the fatty acid of plant base, have good biodegradability, are therefore more friendly to environment.It should be noted that described fatty acid amide ethoxy quaternary ammonium salt, fatty acid imidazoline quaternary ammonium salt, fatty acid ester group quaternary ammonium salt are all purchased from Nanfeng County Daxin Technology Co., Ltd.

[0023] In order to increase the fragrance of the clothing protection sheet and make it have the effect of enhancing the fragrance of clothes, the base material of the deepening clothing protection sheet also includes fragrances and fragrance carriers. The fragrances include free fragrances or fragrance microcapsules. These free fragrances or fragrance microcapsules can be attached to the surface of clothes, and have the effect of enhancing fragrance or slowly releasing fragrance, which can improve the user experience of clothes.

[0024] In a preferred embodiment, the fragrance carrier is kaolin or clay. Using kaolin or clay as a fragrance carrier can increase the adhesion between the base material and the carrier sheet, which helps increase the base material ratio and thus improve the darkening effect. In addition, kaolin and clay are both inorganic materials, which can increase the dryness of the product, which is more beneficial to the subsequent production process.

[0025] In a preferred embodiment, the base material includes, by weight, 20 to 80 parts of a darkening agent, 5 to 20 parts of a quaternary ammonium surfactant, 0.1 to 50 parts of a fragrance, and 5 to 30 parts of a fragrance carrier. The clothing protection sheet with this ratio has a good effect of deepening the color, softening, and enhancing the fragrance of clothes.

[0026] In the aforementioned deepening garment-protecting sheet, the carrier sheet can be a non-woven fabric made of PVC, PET, or PP. The non-woven fabric has a porous layered structure and can be used as a carrier for deepening agents and quaternary ammonium surfactants, so as to form a sheet structure, facilitate packaging, storage, and transportation according to quantity, and facilitate determining the amount of the garment-protecting sheet to be used according to the amount of clothing. However, the non-woven fabrics made of PVC, PET, and PP cannot be degraded after use, which is not environmentally friendly and does not conform to the development concept of green environmental protection. In this regard, in a preferred embodiment, the carrier sheet is a sheet prepared from one or more of modified starch, modified cellulose or hemicellulose, and modified lignin. Since modified starch, modified cellulose or hemicellulose, and modified lignin are biodegradable materials, the carrier sheet remaining after the garment-protecting sheet is used can be degraded in the environment, so it will not have an impact on the environment and is more environmentally friendly.

[0027] However, the carrier sheet has a limited capacity for darkening agents, quaternary ammonium surfactants, fragrances, and fragrance carriers. When the capacity reaches a certain amount, increasing the base material capacity will result in insufficient softness of the sheet, and the base material may peel off easily. In this regard, in a preferred embodiment, the weight ratio of the carrier sheet to the base material is 1:(1 to 10), so that the obtained garment sheet has a better softening and darkening effect. At the same time, the base material will not peel off when the sheet is folded. Preferably, the weight ratio of the carrier sheet to the base material is 1:(1 to 6). More preferably, the weight ratio of the carrier sheet to the base material is 1:(1 to 4), and the sheet has better softness.

[0028] The second aspect of the present invention also discloses a method for preparing a darkening garment protection sheet, which includes the following steps: taking a darkening agent according to a proportion, heating it to melt it; adding a quaternary ammonium surfactant to the molten darkening agent, stirring and mixing it, and fully mixing the two; then adding a fragrance carrier, stirring and mixing it; adjusting the material temperature to 50-70°C, adding fragrance, stirring it evenly, and obtaining a molten base material; immersing the cut carrier sheet in the molten base material for 10-30 seconds, pulling it out, flattening it with a 10-70 mesh roller, cooling and forming it, and obtaining a darkening garment protection sheet.

[0029] The above-mentioned deepening clothing sheet is prepared by first melting the deepening agent by heating, and then adding a quaternary ammonium surfactant. By utilizing the interaction between the quaternary ammonium surfactant and the deepening agent, the molecular chain of the macromolecular deepening agent is opened in an anhydrous state, so that the deepening agent can exert a deepening effect during use and be better dispersed in the base material; the prepared finished clothing sheet is a water-free solid sheet, and therefore can greatly reduce transportation costs.

[0030] The third aspect of the present invention also provides a method for using a darkening garment sheet, which is to add the garment sheet to the dryer before the clothes drying program. The drying temperature of the clothes drying program is 90-120°C, the drying time is 30-120 minutes, the amount of garment sheet added is 4-8 pieces of clothing / 1 sheet, and the weight of each garment sheet is 1.8-10.0g. In this method of use, the high temperature when drying clothes is used to melt the base material components attached to the carrier sheet, and the high-speed rotation of the clothes transfers the darkening agent, quaternary ammonium salt surfactant and fragrance in the base material to the surface of the clothes, which has the effect of darkening, softening and adding fragrance to the clothes. When the clothes drying program is completed, the effective ingredients on the carrier sheet are basically all transferred to the clothes, leaving only the carrier sheet. Therefore, after the clothes are taken out, the carrier sheet is removed. The carrier sheet can slowly biodegrade in the environment and will not affect the environment.

[0031] It should be noted that the ratio of clothing to clothing protectors is an empirical value and can be changed according to actual needs and is not limited to the above ratio.

[0032] The method for using the depth-enhancing garment sheet described in this embodiment does not require dissolution in water, nor is it limited to use during fabric finishing. It is particularly suitable for use during the clothing drying process. Because it is a solid tablet, the active ingredients in the base material must be melted, volatilized, or evaporated by the heat of the clothes drying process. The high-speed rotation of the clothes during drying allows these active ingredients to evenly adhere to the surface of the clothes and achieve the desired effect.

[0033] Thus, the darkening sheet described in this application has the effect of darkening the color of clothing and making clothing softer, smoother, and fluffier. Because it is in sheet form, it is easy to store, transport, and use. Furthermore, the darkening sheet can be used while clothes are being dried, breaking the limitation of existing darkening agents that can only be used during fabric finishing, and solving the technical problem of clothing becoming old and white after long-term use.

[0034] To further illustrate the depth-enhancing garment protection sheet provided by the present invention, the following examples are provided.

[0035] Example 1

[0036] A garment-darkening sheet comprises a non-woven fabric carrier sheet and a base material attached to the surface of the carrier sheet, wherein the weight ratio of the carrier sheet to the base material is 1:4; the base material comprises, by weight, 60 parts of modified silicone oil, 10 parts of fatty amide ethoxy quaternary ammonium salt, 20 parts of fragrance, and 15 parts of kaolin.

[0037] The preparation method of the clothing protection sheet comprises the following steps: taking a darkening agent according to a proportion, heating it to melt it; adding a quaternary ammonium salt surfactant to the molten darkening agent, stirring and mixing it to fully mix the two; then adding a fragrance carrier, stirring and mixing it; adjusting the material temperature to 62°C, adding fragrance, stirring it evenly to obtain a molten base material; immersing a cut carrier sheet in the molten base material for 20 seconds, pulling it out, flattening it with a 10-70 mesh roller, cooling and forming it, and obtaining the darkening clothing protection sheet.

[0038] Example 2

[0039] A garment-darkening sheet comprises a non-woven fabric carrier sheet and a base material attached to the surface of the carrier sheet, wherein the weight ratio of the carrier sheet to the base material is 1:1; the base material comprises, by weight, 80 parts of silicone oil, 20 parts of fatty amide ethoxy quaternary ammonium salt, 0.1 parts of fragrance, and 5 parts of kaolin.

[0040] Example 3

[0041] A garment-darkening sheet comprises a non-woven fabric carrier sheet and a base material attached to the surface of the carrier sheet, wherein the weight ratio of the carrier sheet to the base material is 1:10; the base material comprises, by weight, 20 parts of an acrylate polymer, 5 parts of a fatty acid imidazoline quaternary ammonium salt, 50 parts of a fragrance, and 30 parts of clay.

[0042] Example 4

[0043] A depth-enhancing garment sheet comprises a non-woven fabric carrier sheet and a base material attached to the surface of the carrier sheet, wherein the weight ratio of the carrier sheet to the base material is 1:6; the base material comprises, by weight, 40 parts of modified silicone oil, 15 parts of fatty acid ester quaternary ammonium salt, 30 parts of fragrance, and 10 parts of clay.

[0044] It should be noted that the preparation method of the depth-enhancing garment protection sheet described in Examples 2-4 is the same as that in Example 1.

[0045] Comparative Example 1

[0046] A clothing protection sheet comprises a non-woven fabric carrier sheet and a base material attached to the surface of the carrier sheet, wherein the weight ratio of the carrier sheet to the base material is 1:6; the base material comprises, by weight, 55 parts of fatty acid ester quaternary ammonium salt, 30 parts of fragrance, and 10 parts of kaolin.

[0047] Comparative Example 2

[0048] A clothing protection sheet comprises a non-woven fabric carrier sheet and a base material attached to the surface of the carrier sheet, wherein the weight ratio of the carrier sheet to the base material is 1:6; the base material comprises, by weight, 40 parts of modified silicone oil, 15 parts of fatty acid amide acetate, 30 parts of fragrance, and 10 parts of kaolin.

[0049] Comparative Example 3

[0050] A clothing protection sheet comprises a non-woven fabric sheet-shaped carrier and modified silicone oil attached to the carrier, wherein the weight ratio of the carrier to the modified silicone oil is 1:6.

[0051] Performance Testing

[0052] Fluffiness: Run the self-cleaning mode and clean the washing machine until there is no foam. Place a new towel in the washing machine (Haier XQS100-BZ368Z) without adding detergent. Wash the towel on the standard mode to remove the loose hair on the surface and let it dry naturally. Adjust the washing machine to the standard mode and set the parameters as follows:

[0053] Water level: 2 gears (29L);

[0054] Soaking: 30min;

[0055] Washing: 25min;

[0056] Rinse: 1 time;

[0057] Dehydration: 4 minutes

[0058] After the parameters are set, put 12 towels in the washing machine, add 30g of standard laundry detergent into the washing machine trough, close the lid, start the washing program, and wait for the program to end, which is recorded as one washing process. After washing, take out the towels and put them in the dryer. The drying temperature of the drying program is 90°C and the drying time is 60min. Put the clothing protection sheets prepared in Examples 1-4 and Comparative Examples 1-3 on the towels in batches, start the program, and count it as 1 process. Repeat the above washing and drying process a total of 5 times. After drying, the towels are folded into squares first horizontally and then vertically, and then the towels folded into squares are stacked together to test the overall height to judge the fluffiness of the towels. In addition, 12 towels are used as control samples, washed and dried according to the above procedures, and no reagents are added during drying.

[0059] Antistatic coefficient, darkening rate and softness index: Referring to the above fluffiness method, replace 12 towels with 6 black polyester chiffon clothes, repeat the same process 5 times, and first test the antistatic index of the clothes after drying according to QB / T 4535; then, use a colorimeter to measure the K / S value of the fabric after humidity adjustment according to the method specified in GB / T 6688. Finally, six experienced hand feel assessors were recruited to conduct softness tests, with 10 points as the full score, and the hand feel of the seven groups of experimental clothes was evaluated.

[0060] The specific test results are shown in Table 1.

[0061] As shown in Table 1, the darkening garment sheets described in Examples 1-4 have a good darkening effect, with a darkening rate of more than 20% on the color of clothing, and can also improve the fluffiness, softness, and antistatic properties of the fabric. However, the darkening rate of Comparative Example 1 is 0, and it does not have a darkening effect. This is because no darkening agent is added to its base material. Although Comparative Example 2 can make clothing fluffy, soft, and darken, it is inferior to Example 4. The main reason is that the softener used is not a quaternary ammonium salt surfactant, so it does not significantly open the modified silicone oil molecular chain, resulting in the modified silicone oil's darkening effect not being fully exerted. Comparative Example 3 has a certain darkening effect, but when the modified silicone oil is added in a large amount, the darkening effect is not significant. This shows that in the absence of a quaternary ammonium salt surfactant, the modified silicone oil's molecular chain is difficult to open, resulting in its inability to properly exert its darkening effect.

[0062] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A garment-depth enhancing sheet, comprising a carrier sheet and a base material, characterized in that: The base material comprises, by weight, 20 to 80 parts of a darkening agent and 5 to 20 parts of a quaternary ammonium salt surfactant. The quaternary ammonium salt surfactant can act on the darkening agent under stirring and heating conditions to open the long chains of the darkening agent molecules.

2. The depth-enhancing garment protection sheet according to claim 1, characterized in that: The quaternary ammonium salt surfactant is selected from one or more combinations of fatty acid amide ethoxy quaternary ammonium salt, fatty acid imidazoline quaternary ammonium salt, and fatty acid ester quaternary ammonium salt.

3. The depth-enhancing garment protection sheet according to claim 2, characterized in that: The darkening agent is selected from silicone oil, modified silicone oil, acrylate polymer or a combination of several thereof.

4. The depth-enhancing garment protection sheet according to claim 1, characterized in that: The carrier sheet is a sheet prepared from one or more of modified starch, modified cellulose or hemicellulose, and modified lignin.

5. The depth-enhancing garment protection sheet according to claim 4, characterized in that: The weight ratio of the carrier sheet to the base material is 1:(1-10).

6. The depth-enhancing garment protection sheet according to claim 1, characterized in that: The base also includes fragrance and fragrance carrier.

7. The depth-enhancing garment protection sheet according to claim 6, characterized in that: The perfume carrier is kaolin or clay.

8. The depth-enhancing garment protection sheet according to claim 6, characterized in that: The base material comprises 0.1 to 50 parts of fragrance and 5 to 30 parts of fragrance carrier by weight.

9. The method for preparing the depth-enhancing garment protection sheet according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: taking a darkening agent, heating it to make it melt; adding a quaternary ammonium salt surfactant to the melted darkening agent, stirring and mixing; then adding a fragrance carrier, stirring and mixing; adjusting the material body temperature to 50-70°C, adding fragrance, stirring evenly, and obtaining a molten base material; dipping a cut carrier sheet into the molten base material for 10-30 seconds, pulling it out, flattening it with a 10-70 mesh roller, cooling and forming it, and obtaining a darkening clothing protection sheet.

10. A method for using a garment-depth enhancing sheet, characterized in that: The darkening clothing protecting sheet is the darkening clothing protecting sheet as described in any one of claims 1 to 8, and the method of use is to add the darkening clothing protecting sheet in a clothes drying process to make the clothes bright in color.

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