CN117702488A

CN117702488A - Window shade and production process thereof

Info

Publication number: CN117702488A
Application number: CN202311562605.5A
Authority: CN
Inventors: 孙艳漓; 金暾
Original assignee: Hangzhou Zhongyi Cloth Industry Co ltd
Current assignee: Hangzhou Zhongyi Cloth Industry Co ltd
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-03-15

Abstract

The present application relates to the field of window coverings, and more particularly, to a window covering and a process for producing the same. A window shade comprises a base cloth and a coating film, wherein the coating film is coated on the surface of the base cloth; the coating comprises the following raw materials: 150-200g/L of aqueous polyurethane emulsion, 0.1-3g/L of penetrating agent, 0.1-5g/L of silane coupling agent, 5-15g/L of bamboo fiber, 8-20g/L of acetate fiber, 1-10g/L of castor oil and 1-10g/L of surfactant; the balance of water; the production process comprises the following steps: uniformly mixing aqueous polyurethane emulsion, penetrating agent, silane coupling agent, bamboo fiber, acetate fiber, castor oil, surfactant and water to obtain mixed slurry; and soaking the base cloth into the mixed slurry, taking out, drying, baking, and coating the outer side of the base cloth with a coating film to obtain the window shade. The curtain has the advantage of ensuring the light shielding performance and the air permeability of the curtain simultaneously.

Description

Window shade and production process thereof

Technical Field

The present application relates to the field of window coverings, and more particularly, to a window covering and a process for producing the same.

Background

In the field of household textiles, curtains take an important role, and a large number of curtain products are required to be used in households, restaurants or passenger transportation industries. Along with the diversified development of curtain plants, curtains with various functions, such as ultraviolet-proof curtains, flame-retardant curtains, antistatic curtains, odor-removing curtains and the like, are also developed. However, all of these additional functions must be built with good light-shielding properties to be continuously derived.

In order to enhance the shading effect of the window curtain, the window curtain is usually made thick or coated with a film on the surface of the window curtain. Although these methods can raise the shade of the window covering, they can result in air being unable to circulate. Especially, the curtain applied to bedrooms is beneficial to some users in dim environments to fall asleep better. If the air cannot circulate under the condition that the light is blocked, the suffocation feeling of people can be further aggravated in the aspect of the subject. Therefore, there is still a need for improvement.

Disclosure of Invention

In order to ensure light shielding property and air permeability at the same time, the application provides a window shade and a production process thereof.

In a first aspect, the present application provides a window shade, which adopts the following technical scheme:

a window shade comprises a base cloth and a coating film, wherein the coating film is coated on the surface of the base cloth; the coating comprises the following raw materials: 150-200g/L of aqueous polyurethane emulsion, 0.1-3g/L of penetrating agent, 0.1-5g/L of silane coupling agent, 5-15g/L of bamboo fiber, 8-20g/L of acetate fiber, 1-10g/L of castor oil and 1-10g/L of surfactant;

the balance of water.

By adopting the technical scheme, under the common cooperation of the bamboo fibers, the acetate fibers and the castor oil, the bamboo fibers and the acetate fibers are mutually interwoven to form a special network structure. The network structure formed by the bamboo fiber, the acetate fiber and the castor oil is compact, and due to the special form of the bamboo fiber and the acetate fiber, partial gaps are also included between the network structures.

Under the co-cooperation of bamboo fiber, acetate fiber and castor oil, the coating film is rapidly spread on the surface of the base cloth and is rapidly solidified to form a film. The compact network structure ensures that the film has stable structure, light is refracted for many times on the curtain, and the difficulty of light penetrating the curtain is increased, thereby playing a good shading effect. Because a part of gaps are arranged between the special network structures, air can enter the inside of the coating through the gaps. After entering the inside of the coating, the air spreads along the structures of the bamboo fibers and the acetate fibers and penetrates through the coating and the base cloth, and the air can still keep higher penetration and exchange speed although the penetration speed of the air is lower than that of the air directly penetrating through the base cloth due to the special structure of the coating. It should be noted that even if light enters the film from the gaps of the network structure, the light cannot directly penetrate through the film due to the dense and complex network structure and the multiple refraction.

Preferably, the coating comprises the following raw materials: 175-185g/L of aqueous polyurethane emulsion, 0.5-1.2g/L of penetrating agent, 1-3g/L of silane coupling agent, 8-15g/L of bamboo fiber, 15-20g/L of acetate fiber, 3-6g/L of castor oil and 2-6g/L of surfactant; the balance of water.

Through adopting above-mentioned technical scheme, further inject the quantity cooperation between each raw materials, form more stable system, be favorable to bamboo fibre, acetate, castor oil to form more compact, directional, stable network structure on the base cloth to further improve the shading effect and the ventilative degree of (window) curtain.

Preferably, the surfactant is one or more of fluorocarbon surfactant, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether and secondary sodium alkyl sulfonate.

Preferably, the surfactant is fluorocarbon surfactant and alkylphenol polyoxyethylene ether, and the mass ratio of the fluorocarbon surfactant to the alkylphenol polyoxyethylene ether is 1: (0.8-1.2) based on the mass of the fluorocarbon surfactant.

By adopting the technical scheme, the specific type of surfactant is selected, the matching proportion between the surfactant and the base fabric is further limited, air is quickly replaced, and the surface of the base fabric is quickened to be wetted, so that the film is more quickly and more tightly contacted with the surface of the base fabric, and a specific network structure is smoothly formed on the surface of the base fabric.

In a second aspect, the present application provides a production process of a window shade, which adopts the following technical scheme:

a production process of a window shade comprises the following steps:

uniformly mixing aqueous polyurethane emulsion, penetrating agent, silane coupling agent, bamboo fiber, acetate fiber, castor oil, surfactant and water to obtain mixed slurry;

and soaking the base cloth into the mixed slurry, taking out, drying, baking, and coating the outer side of the base cloth with a coating film to obtain the window shade.

By adopting the technical scheme, the method for preparing the mixed slurry is simple and quick, and is beneficial to reducing the cost.

Preferably, when the mixed slurry is prepared, the raw materials are stirred under the condition of 800-1000r/min until the raw materials are uniform.

By adopting the technical scheme, the raw materials such as the bamboo fiber, the acetate fiber and the castor oil are further limited to be mixed at a specific rotating speed, so that the raw materials are fully scattered, and the bamboo fiber, the acetate fiber and the castor oil are promoted to form a specific network structure.

Preferably, the bamboo fiber, the acetate fiber and water are uniformly mixed under the condition of 1500-2000r/min, and the mixed fiber is obtained after filtration and drying; then carrying out corona treatment on the mixed fiber to obtain a modified mixed fiber; the modified mixed fiber and other raw materials are mixed together to prepare mixed slurry.

By adopting the technical scheme, the bamboo fibers and the acetate fibers are mixed under the condition of high-speed stirring and are interwoven together. And then corona treatment is carried out, so that the bamboo fibers and the acetate fibers are rough, further interweaving and winding of the bamboo fibers and the acetate fibers are promoted, the subsequent raw materials such as castor oil and the like are tightly combined, the raw materials are easier to cover the surface of the base cloth, and the surface of the base cloth is endowed with better shading effect and air permeability.

Preferably, the corona treatment conditions are as follows: the voltage is 25-35V, the frequency is 600-1000Hz, and the gap between the electrode rod and the electrode rod is 1-5mm.

The corona treatment of the mixed fiber needs to control the conditions, if the mixed fiber is excessively treated, the mixed fiber is too coarse, and even the structure of the bamboo fiber and the acetate fiber for air to pass through is damaged; if the processing is insufficient, the network structure is not compact enough, and the light cannot be refracted and scattered sufficiently, so that the shading effect is affected. By adopting the technical scheme, the corona condition is further limited, so that the special network structure with moderate roughness is obtained.

In summary, the present application has the following beneficial effects:

1. under the co-cooperation of bamboo fiber, acetate fiber and castor oil, the coating film is rapidly spread on the surface of the base cloth and is rapidly solidified to form a film. The film is composed of a compact network structure, and light is refracted for many times on the curtain, so that the difficulty of penetrating the curtain by the light is increased, and a good shading effect is achieved. The network structure can not obstruct the air to pass through, and the air can pass through the coating film and the base cloth along the bamboo fiber and the acetate fiber, thereby ensuring good air permeability.

2. The application selects the specific type of surfactant, further limits the matching proportion between the surfactant and the base fabric, rapidly replaces air, and quickens the wetting of the surface of the base fabric, so that the coating film is more rapid and more tightly contacted with the surface of the base fabric, and a specific network structure is smoothly formed on the surface of the base fabric.

3. The method uses a specific modification treatment mode for the bamboo fiber and the acetate fiber, so that the bamboo fiber and the acetate fiber are tightly combined, and a special and specific network structure is formed in a subsequent stable orientation, thereby being beneficial to improving the shading effect and the air permeability.

Detailed Description

The present application is described in further detail below with reference to examples.

The raw materials used in the following examples and comparative examples are all commercially available products.

Examples

Example 1

A window shade comprises a base cloth and a coating film, wherein the coating film surrounds the outer side of the base cloth.

In this example, taking the preparation of 1L of the coating film as an example, the coating film comprises the following raw materials: 180g of aqueous polyurethane emulsion, 1g of penetrating agent, 2g of silane coupling agent, 10g of bamboo fiber, 18g of acetate fiber, 5g of castor oil and 4g of surfactant; the balance of water.

The specific amounts of the raw materials are shown in Table 1.

The aqueous polyurethane emulsion is purchased from Anhuidawei Huatai New Material technology Co., ltd, and the model is AH-1701.

The penetrating agent is penetrating agent JFC.

The silane coupling agent is KH-560.

Bamboo fiber was purchased from Shandong Xuzheng textile Co., ltd and had a length of 30-50mm.

The acetate fiber is diacetyl cellulose with CAS number of 9035-69-2.

Castor oil is purchased from jinan major commercial company.

The surfactant is fluorocarbon surfactant and alkylphenol polyoxyethylene ether, and the mass ratio of the fluorocarbon surfactant to the alkylphenol polyoxyethylene ether is 1:1.

the fluorocarbon surfactant is Capstone FS-30, and alkylphenol ethoxylates are available from Chengdu Hongtai Xin technology Co.

The embodiment of the application also provides a production process of the window shade, which comprises the following steps:

step 1): preparing mixed fibers:

the bamboo fiber, the acetate fiber and water are put into a stirring kettle and mixed for 15min under the condition of 1800 r/min.

Then filtering, and placing the obtained solid in hot air at 80 ℃ for 4 hours to dry. Obtaining the mixed fiber.

Step 2): preparing modified mixed fibers:

and (3) carrying out corona treatment on the mixed fiber, wherein the gap between the mixed fiber and the electrode rod is 3mm, and the corona treatment condition is that the voltage is 30V, the frequency is 800Hz, and the treatment is carried out for 5min. Obtaining the modified mixed fiber.

Step 3): the preparation method comprises the steps of putting aqueous polyurethane emulsion, a penetrating agent, a silane coupling agent, modified mixed fibers, castor oil, a surfactant and water into a reaction kettle, adjusting the rotating speed to 900r/min, and mixing for 15min to obtain mixed slurry.

Step 4): soaking the base fabric into the mixed slurry, and vibrating and soaking for 10min.

Step 5): taking out the soaked base cloth in the step 4), carrying out twice soaking and twice pressing until the rolling residual rate is 70%, and then sequentially baking, ultrasonic washing and airing to obtain the window shade.

Example 2

A window shade, which is different from the embodiment 1,

the coating comprises the following raw materials: 150g of aqueous polyurethane emulsion, 0.1g of penetrating agent, 0.1g of silane coupling agent, 5g of bamboo fiber, 8g of acetate fiber, 1g of castor oil and 1g of surfactant; the balance of water.

The mass ratio of the fluorocarbon surfactant to the alkylphenol polyoxyethylene ether is 1:0.8.

the specific amounts of the raw materials are shown in Table 1.

A production process of a window shade differs from that of embodiment 1 in that,

mixing at 1500r/min in step 1).

In the step 2), the gap between the mixed fiber and the electrode rod is 1mm, the corona treatment condition is that the voltage is 25V, the frequency is 600Hz, and the treatment is carried out for 5min.

And 3) adjusting the rotating speed to 800r/min in the step 3).

Example 3

A window shade, which is different from the embodiment 1,

the coating comprises the following raw materials: 200g of aqueous polyurethane emulsion, 3g of penetrating agent, 5g of silane coupling agent, 15g of bamboo fiber, 20g of acetate fiber, 10g of castor oil and 10g of surfactant; the balance of water.

The mass ratio of the fluorocarbon surfactant to the alkylphenol polyoxyethylene ether is 1:1.2.

the specific amounts of the raw materials are shown in Table 1.

mixing at 2000r/min in step 1).

In the step 2), the gap between the mixed fiber and the electrode rod is 5mm, the corona treatment condition is that the voltage is 35V, the frequency is 1000Hz, and the treatment is carried out for 5min.

And 3) adjusting the rotating speed to 1000r/min in the step 3).

Example 4

A window covering, different from example 1 in that the cover film comprises the following raw materials: 175g of aqueous polyurethane emulsion, 0.5g of penetrating agent, 1g of silane coupling agent, 8g of bamboo fiber, 15g of acetate fiber, 3g of castor oil and 2g of surfactant; the balance of water.

The specific amounts of the raw materials are shown in Table 1.

Example 5

A window covering, different from example 1 in that the cover film comprises the following raw materials: 185g of aqueous polyurethane emulsion, 1.2g of penetrating agent, 3g of silane coupling agent, 15g of bamboo fiber, 20g of acetate fiber, 6g of castor oil and 6g of surfactant; the balance of water.

The specific amounts of the raw materials are shown in Table 1.

Example 6

A window shade differing from example 1 in that the mass ratio of fluorocarbon surfactant to alkylphenol ethoxylate is 1:10, 0.36g of fluorocarbon surfactant and 3.64g of alkylphenol ethoxylate.

Example 7

mixing at 500r/min in step 1).

Example 8

A process for producing a window shade, which differs from example 1 in that the corona treatment of step 2) is omitted.

Example 9

A process for producing a window shade, which is different from example 1 in that the voltage in step 2) is 10V and the frequency is 1500Hz.

Example 10

A process for producing a window shade, which is different from embodiment 1 in that the rotational speed is adjusted to 200r/min in step 3).

Comparative example

Comparative example 1

A window shade differs from example 1 in that the bamboo fibers are replaced with straw fibers, i.e., 0g of the bamboo fibers and 10g of the straw fibers.

Comparative example 2

A window shade differs from example 1 in that the acetate fibers are replaced with polyamide fibers, i.e., 0g acetate fibers and 18g polyamide fibers.

Comparative example 3

A window shade differs from example 1 in that castor oil is replaced with soybean oil, i.e., 0g castor oil and 5g soybean oil.

Comparative example 4

A window shade differs from example 1 in that the bamboo fiber is 2g, the acetate fiber is 6g, and the castor oil is 25g.

Performance test

1. Shading effect: the curtains of examples 1-comparative examples 1-4 were tested according to FZ/T01009-2008 determination of light transmittance of textile fabrics, and the total luminous flux transmittance was recorded in Table 2.

2. Air permeability: the curtains of examples 1-comparative examples 1-4 were tested with reference to GB/T5453-1997 determination of textile fabric breathability. Specifically, the sample area was 20cm ² The fabric ventilation meter was used to measure and record the airflow rate per unit area through the fabric vertically in table 2.

TABLE 2

Comparative examples 1-3 are based on example 1, the specific combination of bamboo fiber, acetate fiber and castor oil in the system was destroyed, and other similar raw materials were optionally replaced. As can be seen from comparison of the test results of example 1 and comparative examples 1-3 in Table 2, the window covering of example 1 has lower transmittance (less light transmission is demonstrated) and higher airflow rate than the window covering of comparative examples 1-3, indicating that the window covering of example 1 maintains good light shielding property and exhibits good ventilation effect. The curtains of comparative examples 1 to 3 were either poor in light-shielding properties but poor in air permeability, poor in air permeability or poor in air permeability, and were not good in light-shielding properties, and failed to achieve the effects of example 1. The bamboo fiber, the acetate fiber and the castor oil are organic integral combination and can not be split at will.

Comparative example 4 is based on example 1, breaking the special amount of the combination of bamboo fiber, acetate fiber and castor oil. As can be seen from comparison of the test data of example 1 with comparative examples 1 to 4 in Table 2, the light-shielding and ventilation effects of comparative example 4 are slightly better than those of comparative examples 1 to 3, but far inferior to those of example 1. The specification not only needs to ensure the special coordination of the bamboo fiber, the acetate fiber and the castor oil, but also needs to further strictly limit the special coordination dosage relationship of the bamboo fiber, the acetate fiber and the castor oil in the system.

Example 6 was based on example 1, the blending ratio between the surfactants was changed. As can be seen from comparison of the test data of example 1 and example 6 in Table 2, the obtained window shade had a fall-back in light shielding and air permeability. The selection and proportion of the surfactant are further limited, so that the cloth can be soaked more quickly, the surface of the cloth is stretched to form a film, and the blending effect of the raw materials in the system is more fully exerted.

Examples 7-9 are conditions for modifying the mixed fiber based on example 1. As is clear from comparison of the test data of example 1 and examples 7 to 9 in Table 2, when the mixing and stirring speeds of the bamboo fibers and the acetate fibers were changed, the two fibers could not be sufficiently mixed and interlaced, and the network structure formed was not dense enough, thereby affecting the shading effect. If the mixed fiber is not subjected to corona treatment, the surfaces of the bamboo fiber and the acetate fiber are smooth, and have insufficient rough sites, so that the bamboo fiber and the acetate fiber are easy to combine and are not compact, and the shading effect is greatly influenced. It is described that the conditions for preparing the mixed fiber and the specific corona treatment conditions for the mixed fiber are further limited, and the blending effect among the bamboo fiber, the acetate fiber and the castor oil can be further promoted under the specific conditions, so that the shading effect and the air permeability are simultaneously improved.

Example 10 is a comparative example between example 1 and example 10, in which the preparation conditions for preparing the mixed slurry were changed based on example 1, and it is understood from the test data of example 1 and example 10 in table 2 that the properties of the window covering of example 10 in terms of light shielding and ventilation were somewhat lowered as compared with those of example 1.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims

1. A blackout curtain, characterized in that it includes a base fabric and a covering film, and the covering film is coated on the surface of the base fabric; the covering film includes the following raw materials:

150-200g/L water-based polyurethane emulsion, 0.1-3g/L penetrating agent, 0.1-5g/L silane coupling agent, 5-15g/L bamboo fiber, 8-20g/L acetate fiber, 1-10g/L castor oil , 1-10g/L surfactant;

water margin.

2. The blackout curtain according to claim 1, characterized in that: the coating includes the following raw materials: 175-185g/L water-based polyurethane emulsion, 0.5-1.2g/L penetrant, 1-3g/L silane coupling Agent, 8-15g/L bamboo fiber, 15-20g/L acetate fiber, 3-6g/L castor oil, 2-6g/L surfactant; water balance.

3. The blackout curtain according to claim 1, characterized in that: the surfactant is fluorocarbon surfactant, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, and sodium secondary alkyl sulfonate. of one or more mixtures.

4. The blackout curtain according to claim 3, characterized in that: the surfactant is a fluorocarbon surfactant, an alkylphenol polyoxyethylene ether, a fluorocarbon surfactant, or an alkylphenol polyoxyethylene ether. The mass ratio is 1: (0.8-1.2), based on the mass of fluorocarbon surfactant.

5. A production process based on the blackout curtain according to any one of claims 1 to 4, characterized in that it includes the following steps:

Mix the water-based polyurethane emulsion, penetrating agent, silane coupling agent, bamboo fiber, acetate fiber, castor oil, surfactant and water evenly to obtain a mixed slurry;

Soak the base fabric into the mixed slurry, then take it out to dry and bake, and then cover the outside of the base fabric with a film to obtain a blackout curtain.

6. The production process of blackout curtains according to claim 5, characterized in that: when preparing the mixed slurry, various raw materials are stirred under the conditions of 800-1000r/min until uniform.

7. The production process of blackout curtains according to claim 5, characterized in that: the bamboo fiber, acetate fiber and water are mixed evenly under the conditions of 1500-2000r/min, filtered and dried to obtain the mixed fiber; and then The mixed fiber is then subjected to corona treatment to obtain modified mixed fiber; the modified mixed fiber is mixed with the remaining raw materials to obtain a mixed slurry.

8. The production process of blackout curtains according to claim 7, characterized in that: the conditions of the corona treatment are: voltage 25-35V, frequency 600-1000Hz, and the gap with the electrode rod is 1-5mm.