Process for controlling generation of oil needle paths and creases of polyester-mixed cotton cloth

Abstract

The invention belongs to the field of spinning, and discloses a process for controlling the generation of oil needle paths and creases of polyester-mixed cotton cloth, which comprises the following steps in sequence: gray cloth scutching, open-width oil removal, gray cloth rinsing, oil removal in a cylinder, and sleeve dispersion and discharge from the cylinder. An oil removal agent used in open-width oil removal is a first oil removal agent; an oil removing agent used for removing oil in the cylinder is a second oil removing agent; the dosage of the first degreasing agent is 1-2g / L; the use amount of the second degreasing agent is 2.5 to 3.5 g / L; the open-width oil removal is implemented through a multi-stage oil removal process; the oil removal temperature is firstly increased and then reduced from front to back; the highest oil removal temperature is 80-90 DEG C; the first oil removal agent is prepared from the following components: PPG-4 C13-15 alcohol polyether-15, iso-tridecanol polyoxyethylene ether, cocoanut fatty acid diethanolamide, triethanolamine oleate, an oil removal penetration enhancer and water. According to the process, the double processes of open-width oil removal and in-cylinder oil removal are adopted, in the open-width oil removal process, primary oil removal is conducted through a high-temperature oil removal process, in-cylinder oil removal is conducted through use of a high-concentration oil removal agent, thorough oil removal is achieved, and through the operation, oil can be thoroughly removed, and oil needle paths and creases are completely eradicated.

Description

Technical Field

[0001] This invention belongs to the textile field, specifically relating to a process for controlling the generation of needle marks and creases in polyester-cotton fabrics. Background Technology

[0002] The traditional processing flow for our polyester-cotton blends is as follows:

[0003] Issuing clips → Distributing fabric → Loosening fabric → Opening the greige fabric → Pre-ordering the greige fabric → Feeding fabric → Scattering and dispersing from the vat → Opening the wet fabric (setting T type) → Setting T → Etching → Out of the vat → Opening the wet fabric (washing the wool once) → Fully dry fabric → Cutting and color matching → Finished product shaping (spraying material) → Pre-shrinking and calendering → Finished product color matching → Testing the material to be tested → Color matching of the final sample → Finished product inspection → Finished product packaging.

[0004] Polyester-cotton blends tend to have more oil in their greige fabric and a denser fabric surface, which increases the likelihood of oil needle marks and creases during processing.

[0005] In order to reduce and avoid the formation of oil needle marks and creases, an in-cylinder degreasing step was added after the fabric was pre-washed in the optimized process, but it was still not possible to completely remove the oil.

[0006] Therefore, the technical problem to be solved in this case is: how to thoroughly remove oil from polyester-cotton blends to eliminate oil needle marks and creases. Summary of the Invention

[0007] The purpose of this invention is to provide a process for controlling the formation of oil needle marks and creases in polyester-cotton fabrics. This process employs a dual process of flat-width degreasing and in-cylinder degreasing. Flat-width degreasing uses a high-temperature degreasing process for initial degreasing, while in-cylinder degreasing uses a high-concentration degreasing agent to achieve thorough degreasing. Through the above operations, oil can be completely removed, eliminating the formation of oil needle marks and creases.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A process for controlling the generation of oil needle marks and creases in polyester-cotton fabrics includes the following steps performed in sequence: opening the greige fabric, removing oil from the open width, rinsing the greige fabric with water, removing oil in the degreasing cylinder, and dispersing the greige fabric out of the degreasing cylinder.

[0010] The degreasing agent used for the flat-width degreasing is a first degreasing agent; the degreasing agent used for the in-cylinder degreasing is a second degreasing agent; the dosage of the first degreasing agent is 1~2 g / L; the dosage of the second degreasing agent is 2.5~3.5 g / L;

[0011] The flat-width degreasing is implemented through a multi-stage degreasing process; the degreasing temperature increases and then decreases from front to back; the maximum degreasing temperature is 80~90℃.

[0012] The first degreasing agent is composed of the following components: PPG-4 C13-15 alcohol polyether-15, isomeric tridecyl alcohol polyoxyethylene ether, coconut oil fatty acid diethanolamide, triethanolamine oleate, degreasing and penetration enhancer, and water;

[0013] The weight percentage composition of each material in the first degreasing agent is as follows:

[0014] PPG-4 C13-15 alcohol polyether-15 15~20%;

[0015] Isomeric tridecyl alcohol polyoxyethylene ether 15~20%;

[0016] Coconut oil contains 15-20% diethanolamide of fatty acids;

[0017] 5-15% triethanolamine oleate;

[0018] Degreasing and penetration-enhancing agent 5-8%;

[0019] And the remaining water.

[0020] It should be noted that although the present invention only describes five steps: opening the fabric width, removing oil from the flat width, rinsing the fabric with water, removing oil in the cylinder, and dispersing the fabric out of the cylinder, in fact, a complete processing flow is as described in the background art. After dispersing the fabric out of the cylinder, the wet fabric opening (fixed T type) and other operations are performed, which is no different from the traditional process. Therefore, no further restrictions or descriptions are made.

[0021] In this invention, four nonionic surfactants are combined: PPG-4 C13-15 alcohol polyether-15, isomeric tridecyl alcohol polyoxyethylene ether, coconut oil fatty acid diethanolamide, and triethanolamine oleate. In the process of treating polyester-cotton fabric, the above four nonionic surfactants can withstand high temperature and have good affinity with polyester-cotton fabric. Combined with an oil removal and penetration enhancer and a multi-stage flat-width oil removal process, the removal effect of deep oil stains on polyester-cotton fabric can be significantly improved. The high-temperature oil removal process combined with the specific surfactant combination can bring out deep oil stains, reducing the difficulty of subsequent in-cylinder oil removal.

[0022] This process is particularly suitable for removing oil from polyester-cotton fabrics with heavy oil content and a relatively tight fabric surface.

[0023] In the above-mentioned process for controlling the formation of oil needle marks and creases in polyester-cotton fabrics, the degreasing and penetration-promoting agent is a low-foaming surfactant OX-WLD.

[0024] In the above-mentioned process for controlling the generation of needle marks and creases in polyester-cotton fabrics, the EO number of the isomeric tridecyl alcohol polyoxyethylene ether is 5 to 7.

[0025] In the above-mentioned process for controlling the formation of oil needle marks and creases in polyester-cotton fabrics, the second degreasing agent is branded as Degreasing Agent LT and is supplied by Shangcui Textile.

[0026] In the above-mentioned process for controlling the generation of oil needle marks and creases in polyester-cotton fabrics, the flat-width degreasing adopts a 5-stage degreasing process; from front to back, the degreasing temperatures are 50~70℃, 70~80℃, 80~90℃, 70~80℃, and 50~70℃, respectively.

[0027] In the above-mentioned process for controlling the generation of needle marks and creases in polyester-cotton fabrics, the water temperature in the fabric rinsing process is 75~85℃ and the rinsing time is 3~5s.

[0028] In the above-mentioned process for controlling the generation of oil needle marks and creases in polyester-cotton fabrics, the oil removal temperature in the cylinder is 95~98℃; the oil removal time is 45~60min.

[0029] In the above-mentioned process for controlling the generation of needle marks and creases in polyester-cotton fabrics, the process of dispersing the cylinder specifically includes:

[0030] Fabric preparation: Add the polyester / cotton blend to hot water containing NaOH and treat for 6 minutes; the temperature of the hot water is 50℃, and the concentration of NaOH in the hot water is 1~2wt%.

[0031] Degreasing: Heat the hot water to 70°C at a rate of 3°C / min, add hydrogen peroxide to perform the degreasing operation, and the degreasing operation time is 5 minutes;

[0032] Heating: Heat the hot water to 98°C at a rate of 3°C / min for 45 minutes;

[0033] Cooling: Cool the hot water to 80℃, then drain the water;

[0034] Cooling water: The polyester-cotton blend is treated by immersing it in cold water at a temperature of 40°C.

[0035] The beneficial effects of this invention are:

[0036] This invention utilizes a combination of four nonionic surfactants: PPG-4 C13-15 alcohol polyether-15, isomeric tridecyl alcohol polyoxyethylene ether, coconut oil fatty acid diethanolamide, and triethanolamine oleate. In the treatment of polyester-cotton fabrics, these four nonionic surfactants exhibit high temperature resistance and good affinity with the fabric. Combined with an oil-removing and penetration-enhancing agent and a multi-stage flat-width oil removal process, the removal effect on deep-seated oil stains in polyester-cotton fabrics can be significantly improved. The high-temperature oil removal process combined with the specific surfactant combination can bring out deep-seated oil stains, reducing the difficulty of subsequent in-cylinder oil removal. This process is particularly suitable for oil removal from polyester-cotton fabrics with heavy oil content and a relatively tight fabric surface. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] A process for controlling the generation of needle marks and creases in polyester-cotton fabrics. The specifications of the polyester-cotton fabric of this invention are: S1516ZD-1-thickened light shield heat-shielding plain weave (hollow Sorona), note that "Sorona" is a trademark name. This product is a sun-protective and cooling fabric to be launched in the fall of 2025.

[0040] The process of the present invention includes the following steps performed sequentially:

[0041] Step 1: Card issuance; the production scheduler swipes the card in the fabric warehouse to complete the card issuance;

[0042] Step 2: Fabric preparation; the fabric preparer prepares the fabric from the grey fabric warehouse;

[0043] Step 3: Loosening the cloth; the cloth loosener loosens the prepared cloth according to the requirements;

[0044] Step 4: Fabric opening; the fabric loosener opens the loosened fabric according to the required width;

[0045] Step 5: Production scheduling; the planning supervisor will arrange the fabric that has been cut into widths according to the batch number and the production machine sequence.

[0046] Step 6: Degreasing on a flat surface;

[0047] The operation of flat-width degreasing is as follows: degrease the fabric after it has been opened in a flat-width state;

[0048] The degreasing solution contains a first degreasing agent, added at a rate of 1.5 g / L; the formulation (weight percentage) of the first degreasing agent is: PPG-4 C13-15 alcohol polyether-15 18%;

[0049] Isomeric tridecyl alcohol polyoxyethylene ether (EO=6) 17%;

[0050] Coconut oil contains 15% diethanolamide of fatty acids;

[0051] 15% triethanolamine oleate;

[0052] Degreasing and penetration-enhancing agent, low-foaming surfactant OX-WLD 5%;

[0053] Soft water 30%;

[0054] The fabric undergoes five stages of degreasing, each stage involving immersion in the degreasing solution and spraying the fabric with the solution upon entry and exit. The degreasing temperatures for the five stages are 60℃, 75℃, 85℃, 75℃, and 60℃, respectively.

[0055] Step 7: Pre-order the grey fabric (washing);

[0056] The water temperature is 85℃, and the water immersion time is 3 seconds.

[0057] Step 8: Feed the fabric and remove oil from the cylinder;

[0058] The supplier of the degreasing agent in this step is Shangcui Textile, and the brand name is Degreasing Agent LT; the degreasing temperature is 98℃; and the degreasing time is 45min.

[0059] Step 9: Disperse and discharge the fabric from the dyeing vat; After dyeing is completed according to the dispersion dyeing process, the fabric is removed from the machine and placed into the fabric loading cart.

[0060] Step 10: Cut the wet fabric into widths (T-type); cut the dyed and dispersed fabric into a flat width;

[0061] Step 11: Set T; After the fabric from the dyeing and dispersion is cut into a flat width, it is set at T on the setting machine according to the set T parameters;

[0062] Step 12: Wool removal; After the fabric with the T set is put into the dyeing machine and undergoes reduction cleaning, the wool removal process is carried out.

[0063] Step 13: Unloading from the dyeing vat; After all dyeing processes are completed, the fabric is removed from the machine and placed into the fabric loading cart.

[0064] Step 14: Open the wet fabric (wash the wool once); the dyed fabric is then opened into a flat width;

[0065] Step 15: Dry the fabric completely; After the dyed fabric is cut into flat widths, it is dried in the setting machine by following the dry fabric running parameters.

[0066] Step 16: Cutting and Coloring Samples; After drying in the setting machine, cut A4 sheets from the setting machine and send them to the coloring department for the coloring technician to check the color and test the feel.

[0067] Step 17: Finished product shaping (spraying); The shaping machine operator shapes the finished product according to the hand feel paste formula of the batch color department and the finished product spraying process;

[0068] Step 18: Pre-shrinking and calendering; after the finished product is determined, production is carried out according to the pre-shrinking and calendering process;

[0069] Step 19: Color matching of finished product, testing of the sample to be tested, color matching of the final sample, inspection of finished product fabric, and packaging of finished product.

[0070] Note: Except for step 6, the other operations are basically the same as the traditional operations, so they will not be described in detail in this embodiment.

[0071] Example 2

[0072] Generally the same as Example 1, except that:

[0073] The formula for the first degreasing agent is as follows:

[0074] PPG-4 C13-15 alcohol polyether-15 20%;

[0075] Isomeric tridecyl alcohol polyoxyethylene ether (EO=6) 15%;

[0076] Coconut oil fatty acid diethanolamide 20%;

[0077] 15% triethanolamine oleate;

[0078] Degreasing and penetration-enhancing agent, low-foaming surfactant OX-WLD 5%;

[0079] Soft water 25%.

[0080] The amount of the first degreasing agent added is 1 g / L.

[0081] Example 3

[0082] Generally the same as Example 1, except that:

[0083] The formula for the first degreasing agent is as follows:

[0084] PPG-4 C13-15 alcohol polyether-15 15%;

[0085] Isomeric tridecyl alcohol polyoxyethylene ether (EO=6) 20%;

[0086] Coconut oil contains 15% diethanolamide of fatty acids;

[0087] 5% triethanolamine oleate;

[0088] Degreasing and penetration enhancer, low-foaming surfactant OX-WLD 8%;

[0089] Soft water 37%.

[0090] The dosage of the first degreasing agent is 2 g / L.

[0091] Comparative Example 1

[0092] Generally the same as Example 1, except that:

[0093] PPG-4 C13-15 alcohol polyether-15 35%;

[0094] Coconut oil contains 30% diethanolamide of fatty acids;

[0095] Degreasing and penetration-enhancing agent, low-foaming surfactant OX-WLD 5%;

[0096] Soft water 30%.

[0097] Comparative Example 2

[0098] Generally the same as Example 1, except that:

[0099] Isomeric tridecyl alcohol polyoxyethylene ether (EO=6) 35%;

[0100] 30% triethanolamine oleate;

[0101] Degreasing and penetration-enhancing agent, low-foaming surfactant OX-WLD 5%;

[0102] Soft water 30%.

[0103] Comparative Example 3

[0104] Generally the same as Example 1, except that:

[0105] PPG-4 C13-15 alcohol polyether-15 23%;

[0106] Isomeric tridecyl alcohol polyoxyethylene ether (EO=6) 17%;

[0107] Coconut oil contains 15% diethanolamide of fatty acids;

[0108] 15% triethanolamine oleate;

[0109] Soft water 30%.

[0110] Comparative Example 4

[0111] Generally the same as Example 1, except that:

[0112] The oil is removed through five stages, with the oil removal temperatures being 50℃, 60℃, 75℃, 60℃, and 50℃ respectively.

[0113] Performance testing

[0114] The polyester-cotton blends obtained in the above embodiments and comparative examples were visually inspected to observe whether there were oil lines and creases; the specific results are shown in Table 1.

[0115] Table 1 Visual Results

[0116] Does the oil line exist? Are there any creases? Example 1 no no Example 2 no no Example 3 no no Comparative Example 1 yes no Comparative Example 2 yes no Comparative Example 3 yes yes Comparative Example 4 yes yes

[0117] Results analysis:

[0118] As can be seen from Examples 1-3, the process of the present invention can completely remove oil lines and creases;

[0119] As can be seen from Comparative Examples 1-4, when only two nonionic surfactants are used, it is not possible to fully remove oil from polyester-cotton fabric; if no oil-removing and penetration-enhancing agent is used, the oil cannot be fully expelled and removed from the polyester-cotton fabric, and the disappearance of creases is affected; at the same time, the oil removal temperature is crucial, and a higher oil removal temperature is conducive to more effective oil removal.

[0120] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A process for controlling the generation of needle marks and creases in polyester-cotton fabrics, characterized in that, The process includes the following steps performed in sequence: opening the fabric width, removing oil from the open width, rinsing the fabric with water, removing oil from the vat, and dispersing the fabric out of the vat. The degreasing agent used for the flat-width degreasing is a first degreasing agent; the degreasing agent used for the in-cylinder degreasing is a second degreasing agent; the dosage of the first degreasing agent is 1~2 g / L; the dosage of the second degreasing agent is 2.5~3.5 g / L; The flat-width degreasing is implemented through a multi-stage degreasing process; the degreasing temperature increases and then decreases from front to back. The maximum degreasing temperature is 80~90℃; The first degreasing agent is composed of the following components: PPG-4 C13-15 alcohol polyether-15, isomeric tridecyl alcohol polyoxyethylene ether, coconut oil fatty acid diethanolamide, triethanolamine oleate, degreasing and penetration enhancer, and water; The weight percentage composition of each material in the first degreasing agent is as follows: PPG-4 C13-15 alcohol polyether-15 15~20%; Isomeric tridecyl alcohol polyoxyethylene ether 15~20%; Coconut oil contains 15-20% diethanolamide of fatty acids; 5-15% triethanolamine oleate; Degreasing and penetration-enhancing agent 5-8%; And the remaining water.

2. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, The degreasing and penetration-enhancing agent is a low-foaming surfactant OX-WLD.

3. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, The EO number of the isomeric tridecyl alcohol polyoxyethylene ether is 5 to 7.

4. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, The second degreasing agent is marketed as Degreasing Agent LT.

5. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, The flat-width degreasing process employs a 5-stage degreasing process; from front to back, the degreasing temperatures are 50~70℃, 70~80℃, 80~90℃, 70~80℃, and 50~70℃, respectively.

6. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, In the aforementioned fabric rinsing process, the water temperature is 75~85℃ and the rinsing time is 3~5s.

7. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, The in-cylinder degreasing temperature is 95~98℃; the degreasing time is 45~60min.

8. The process for controlling the generation of needle marks and creases in polyester-cotton fabrics according to claim 1, characterized in that, The specific process of the set-dispersion cylinder is as follows: Fabric preparation: Add the polyester / cotton blend to hot water containing NaOH and treat for 6 minutes; the temperature of the hot water is 50℃, and the concentration of NaOH in the hot water is 1~2wt%. Degreasing: Heat the hot water to 70°C at a rate of 3°C / min, add hydrogen peroxide to perform the degreasing operation, and the degreasing operation time is 5 minutes; Heating: Heat the hot water to 98°C at a rate of 3°C / min for 45 minutes; Cooling: Cool the hot water to 80℃, then drain the water; Cooling water: The polyester-cotton blend is introduced into cold water for treatment; the temperature of the cold water is 40℃.