Sofa leather with ventilation function and preparation method

Abstract

The invention relates to the technical field of sofa leather preparation, and discloses sofa leather with a ventilation function and a preparation method thereof.The sofa leather comprises a sofa leather body, a breathable surface pulp layer is sprayed to the upper end face of the sofa leather body, a breathable gloss oil layer is sprayed to the upper end face of the breathable surface pulp layer, and air holes are formed in the sofa leather body; and the edges of the air holes are coated with leather maintenance glue. According to the sofa leather with the ventilation function, the breathable surface pulp layer and the breathable gloss oil layer are sprayed on the surface of the sofa leather main body, so that the breathable and ventilation effects can be achieved, the glossiness of the surface of the sofa leather main body can be improved through the breathable gloss oil layer, the sofa leather main body looks more textured, and the sofa leather main body can be subjected to staking treatment through an oscillation staking machine; then the sofa leather main body can be dried by a drying machine, so that the sofa leather is softer and more comfortable to use, the air holes can play a role in ventilation, and the leather maintenance glue plays a role in protecting the inner walls of the air holes, so that the air holes are prevented from being pulled and torn.

Description

Technical Field

[0001] The invention relates to the technical field of sofa leather preparation, in particular to a sofa leather with ventilation function and a preparation method thereof. Background Art

[0002] With the continuous development of society, the artificial leather industry has developed rapidly. In the sofa manufacturing industry, sofa leather has been widely used, and there are many kinds of sofa leather currently used.

[0003] The texture of the existing sofa leather is not soft enough, and the ventilation effect is poor, which will affect the comfort of the sofa itself, and the glossiness is not enough, which will affect its aesthetics. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide a sofa leather with ventilation function and a preparation method thereof, so as to solve the problems that the existing sofa leather proposed in the above background technology is not soft enough and has poor ventilation effect, which affects the comfort of the sofa itself, and has insufficient glossiness, which affects its aesthetics.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sofa leather with ventilation function and a preparation method thereof, comprising a sofa leather main body, the upper end surface of the sofa leather main body is sprayed with a breathable surface slurry layer, the upper end surface of the breathable surface slurry layer is sprayed with a breathable varnish layer, the sofa leather main body is provided with air holes, and the edges of the air holes are coated with leather care glue.

[0006] A method for preparing a sofa leather with ventilation function comprises the following steps: S1: The raw hides are added into the soaking drum machine for treatment, and then the raw hides are added into the soaking drum for secondary soaking treatment. The raw hides after liming and dehairing are passed through the fleshing machine to remove the excess meat residue on the raw hides.

[0007] S2: adding the treated raw hides into a water-immersed drum for water washing, adding the delimed and softened raw hides into a water-immersed drum for secondary water washing, and adding the secondary washed raw hides into a tanning drum for tanning.

[0008] S3: The tanned leather is left to stand for more than 2 hours after being taken out of the drum. The leather after standing is squeezed and flattened by a water squeezing and stretching machine. The squeezed leather is added to a vacuum dryer. The dried leather is added to a water squeezing machine to adjust the moisture content by moisture regain. The leather after standing is softened by an oscillating softening machine. The softened leather is polished by a leather grinding machine.

[0009] S4: The leather after grinding is softened by an oscillating softening machine, and the softened leather is added to a stainless steel softening drum for softening. After softening, the side and abdomen of the leather are clamped with a stretcher clamp, and the clamp is fixed to the stretcher with appropriate force. Multiple clamps are used at the same time, and then the leather behind the stretcher is subjected to a cationic spraying process, and then the leather is punched with a puncher, with a hole diameter of 0.5mm and a hole spacing of 5mm. A hanging needle with a diameter of 0.35mm is inserted into the hole, and then leather care glue is applied in the hole. After the glue solidifies, the hanging needle is removed, and then the leather is rolled by a polishing machine. The leather after rolling is left to stand for 2 hours, and the leather after standing is sprayed by a spraying machine, and then softened by a softening drum machine, and then softened by an oscillating softening machine, and then dried by a dryer. Finally, the finished product is sent to the finished product storage area of ​​the fur warehouse by a forklift for storage.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the sofa leather with ventilation function, The sofa leather with ventilation function can achieve the purpose of ventilation and improving glossiness by using the sofa leather main body, the breathable surface slurry layer, the breathable varnish layer, the air holes and the leather curing glue in cooperation with each other. The air-permeable surface slurry layer and the air-permeable varnish layer are sprayed on the surface of the sofa leather main body to achieve the effect of ventilation, and the air-permeable varnish layer can improve the glossiness of the surface of the sofa leather main body, making the sofa leather main body look more textured. The oscillating softening machine can soften the sofa leather main body, and then the dryer can be used to dry the sofa leather main body, so that the device is softer and more comfortable to use. The air holes can play a ventilation role, and the leather curing glue protects the inner wall of the air holes to avoid pulling and tearing of the air holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0012] In the figure: 1. Sofa leather body; 2. Breathable surface pulp layer; 3. Breathable varnish layer; 4. Breathable holes; 5. Leather care glue. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] See also Figure 1-2The present invention provides a technical solution: a sofa leather with ventilation function, comprising a sofa leather main body 1, a breathable surface slurry layer 2 is sprayed on the upper end surface of the sofa leather main body 1, a breathable varnish layer 3 is sprayed on the upper end surface of the breathable surface slurry layer 2, and a breathable hole 4 is opened on the sofa leather main body 1, and the edge of the breathable hole 4 is coated with leather care glue 5.

[0015] According to another aspect of the present invention, there is provided a method for preparing a sofa leather with ventilation function, comprising the following steps: Example 1, S1: The raw hides are added to a water-immersing drum machine for treatment, and then the raw hides are added to a water-immersing drum for secondary water immersion treatment. The raw hides after liming and dehairing are passed through a fleshing machine to remove excess meat residues on the raw hides.

[0016] S2: adding the treated raw hides into a water-immersed drum for water washing, adding the delimed and softened raw hides into a water-immersed drum for secondary water washing, and adding the secondary washed raw hides into a tanning drum for tanning.

[0017] S3: The tanned leather is left to stand for more than 2 hours after being taken out of the drum. The leather after standing is squeezed and flattened by a water squeezing and stretching machine. The squeezed leather is added to a vacuum dryer. The dried leather is added to a water squeezing machine to adjust the moisture content by moisture regain. The leather after standing is softened by an oscillating softening machine. The softened leather is polished by a leather grinding machine.

[0018] S4: The leather after grinding is softened by an oscillating softening machine. The softened leather is added to a stainless steel softening drum for softening. It is softened at 40℃ / 75° for 10-12 hours. After softening, the side and abdomen of the leather are clamped with a stretching board clip. The stretching board is 50℃, 8cm. Pull with appropriate force and then fix the clip on the stretching board. Multiple clips are used at the same time. Then the leather after the stretching board is subjected to a cationic spraying process, 2.0g / sf*2 times. Then, the leather is punched with a punching machine. The hole diameter is 0.5mm and the hole spacing is 5mm. A hanging needle with a diameter of 0.35mm is inserted into the hole. Then, leather care glue 5 is applied in the hole. Wait for the glue to After the water solidifies, the hanging needles are removed and then the leather is tumbled by a polishing machine at 120℃ / 40bar / 8 meters. The leather is left to stand for 2 hours after tumbling. The leather is then sprayed by a spraying machine, with 1.0-1.2g / sf*3 times of breathable surface slurry and 1.0-1.2g / sf*1 time of breathable varnish. It is then tumbled by a tumbling drum machine at 40℃ / 75° for 2 hours. It is then softened by an oscillating stretching machine at 4 grids of 8 meters. It is then dried by a dryer at 80℃ for 1.5 hours. Finally, the finished product is delivered to the finished product storage area of ​​the fur warehouse by a forklift.

[0019] Example 2, S1: The raw hides are added to a water-immersing drum machine for treatment, and then the raw hides are added to a water-immersing drum for secondary water immersion treatment. The raw hides after liming and dehairing are passed through a fleshing machine to remove excess meat residues on the raw hides.

[0020] S2: adding the treated raw hides into a water-immersed drum for water washing, adding the delimed and softened raw hides into a water-immersed drum for secondary water washing, and adding the secondary washed raw hides into a tanning drum for tanning.

[0021] S3: The tanned leather is left to stand for more than 2.5 hours after being taken out of the drum. The leather after standing is squeezed and flattened by a water squeezing and stretching machine. The squeezed leather is added to a vacuum dryer. The dried leather is added to a water squeezing machine to adjust the moisture content by moisture regain. The leather after standing is softened by an oscillating softening machine. The softened leather is polished by a leather grinding machine.

[0022] S4: The leather after grinding is softened by an oscillating softening machine. The softened leather is added to a stainless steel softening drum for softening. It is softened at 45℃ / 80° for 11-13 hours. After softening, the side and abdomen of the leather are clamped with a stretching board clip. The stretching board is 55℃, 10cm, and the clip is fixed to the stretching board with appropriate force. Multiple clips are used at the same time. Then the leather after the stretching board is subjected to a cationic spraying process, 2.0g / sf*2 times. Then, the leather is punched with a punching machine. The hole diameter is 0.6mm and the hole spacing is 5.5mm. A hanging needle with a diameter of 0.4mm is inserted into the hole. Then, leather care glue 5 is applied in the hole. Wait for the glue to After the water solidifies, the hanging needle is removed and then the leather is tumbled by a polishing machine at 130℃ / 50bar / 9 meters. The leather is left to stand for 2.5 hours after tumbling. The leather is then sprayed by a spraying machine, spraying 1.1-1.3g / sf*4 times of breathable surface slurry (1.1-1.3g / sf*1 time of breathable varnish). The leather is then tumbled by a tumbling drum machine at 45℃ / 80° for 2.5 hours. The leather is then softened by an oscillating stretching machine at 5 grids and 9 meters. The leather is then dried by a dryer at 85℃ for 2 hours. The finished product is then delivered to the finished product storage area of ​​the fur warehouse by a forklift.

[0023] Example 3, S1: The raw hides are added to a water-immersing drum machine for treatment, and then the raw hides are added to a water-immersing drum for secondary water immersion treatment. The raw hides after liming and dehairing are passed through a fleshing machine to remove excess meat residues on the raw hides.

[0024] S2: adding the treated raw hides into a water-immersed drum for water washing, adding the delimed and softened raw hides into a water-immersed drum for secondary water washing, and adding the secondary washed raw hides into a tanning drum for tanning.

[0025] S3: The tanned leather is left to stand for more than 3 hours after being taken out of the drum. The leather after standing is squeezed and flattened by a water squeezing and stretching machine. The squeezed leather is added to a vacuum dryer. The dried leather is added to a water squeezing machine and the moisture is adjusted by moisture regain. The leather after standing is softened by an oscillating softening machine. The softened leather is polished by a leather grinding machine.

[0026] S4: The leather after grinding is softened by an oscillating softening machine. The softened leather is added to a stainless steel softening drum for softening. It is softened at 50℃ / 85° for 12-14 hours. After softening, the side and abdomen of the leather are clamped with a stretching board clip. The stretching board is 60℃, 10cm, and the clip is fixed to the stretching board with appropriate force. Multiple clips are used at the same time. Then the leather behind the stretching board is subjected to a cationic spraying process, 2.0g / sf*2 times. Then, the leather is punched with a punching machine. The hole diameter is 0.7mm and the hole spacing is 6mm. A hanging needle with a diameter of 0.45mm is inserted into the hole. Then, leather care glue 5 is applied in the hole. Wait for the glue to Solidify, remove the hanging needle, and then use the polishing machine for tumbling treatment, 140℃ / 60bar / 10 meters, let the leather stand for 3 hours after tumbling, and then use the spraying machine to spray the breathable surface slurry 1.2-1.4g / sf*5 times, (spray breathable varnish 1.2-1.4g / sf*1 time, then use the tumbling drum machine for tumbling, 50℃ / 85°, tumbling for 3 hours, and then use the oscillation stretching machine for softening, 6 grids 10 meters, and then use the dryer for drying, the drying temperature is 90℃, the drying time is 2.5h, and finally the finished product is sent to the finished product storage area of ​​the fur warehouse by forklift for storage.

[0027] The working principle of the device is: the breathable surface pulp layer 2 can ensure the breathability of the sofa leather main body 1, the breathable varnish layer 3 can ensure the glossiness of the surface of the sofa leather main body 1, making the sofa leather main body 1 appear more textured, the air holes 4 can play a breathable role, and the leather care glue 5 protects the edges of the air holes 4. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sofa leather with ventilation function, comprising a sofa leather main body (1), Features: The upper end surface of the sofa leather body (1) is sprayed with a breathable surface pulp layer (2), the upper end surface of the breathable surface pulp layer (2) is sprayed with a breathable varnish layer (3), the sofa leather body (1) is provided with air holes (4), and the edges of the air holes (4) are coated with leather care glue (5).

2. A method for preparing sofa leather with ventilation function, It is characterized in that The following steps are involved: S1: The raw hides are added to the soaking drum machine for treatment, and then the raw hides are added to the soaking drum for secondary soaking treatment. The raw hides after liming and dehairing are passed through a fleshing machine to remove excess meat residues on the raw hides; S2: adding the treated raw hides into a water-immersed drum for water washing, adding the delimed and softened raw hides into a water-immersed drum for secondary water washing, and adding the raw hides after secondary water washing into a tanning drum for tanning; S3: After the tanned leather is taken out of the drum, it is left to stand for more than 2 hours. After standing, the leather is squeezed and flattened by a water squeezing and stretching machine. After squeezing, the leather is added to a vacuum dryer. After drying, the leather is added to a water squeezing machine to adjust the moisture content by moisture regain. After standing, the leather is softened by an oscillating softening machine. The softened leather is polished by a leather grinding machine. S4: The leather after grinding is softened by an oscillating softening machine. The softened leather is added to a stainless steel softening drum for softening at 40℃ / 75° for 10-12 hours. After softening, the leather is clamped by a stretching board clamp at 50℃, 8cm. Pull with appropriate force and then fix the clamp on the stretching board. Multiple clamps are used at the same time. Then the leather after the stretching board is subjected to a cationic spraying process at 2.0g / sf*2 times. Then, a punching machine is used to punch holes in the leather. The hole diameter is 0.5mm and the hole spacing is 5mm. A hanging needle with a diameter of 0.35mm is inserted into the hole. Then, leather care glue (5) is applied to the hole. After the glue solidifies, remove the hanging needle and use a polishing machine for tumbling treatment at 120℃ / 40bar / 8 meters. The leather after tumbling is allowed to stand for 2 hours. The leather after standing is sprayed with a spraying machine, spraying 1.0-1.2g / sf*3 times of breathable surface slurry and 1.0-1.2g / sf*1 time of breathable varnish. Then, it is softened with a tumbling drum machine at 40℃ / 75° for 2 hours. Then, it is softened with an oscillating softening machine, 4 grids and 8 meters. Then, it is dried with a dryer at 80℃ and 1.5 hours. Finally, the finished product is delivered to the finished product storage area of ​​the fur warehouse by a forklift.

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