CN217418580U

CN217418580U - Environment-friendly flame-retardant sofa fabric

Info

Publication number: CN217418580U
Application number: CN202220488224.1U
Authority: CN
Inventors: 王一飞; 徐丽华; 宋鹏; 蒋小云; 曾军; 赵毅; 姜永梅
Original assignee: Hangzhou Hongyi Zhichuang Technology Co ltd
Current assignee: Hangzhou Hongyi Zhichuang Technology Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-09-13
Anticipated expiration: 2032-03-08

Abstract

The utility model discloses a fire-retardant sofa fabric of environmental protection, including sofa precoat, hot melt adhesive layer, fire-retardant base cloth layer, the material of sofa precoat contains the dacron, and its grammes per square metre 300 grams of grammes per square metre, just there is one deck waterproof material layer respectively in the front and the reverse side of sofa precoat, the hot melt adhesive layer is netted hot melt adhesive macromolecule layer, fire-retardant base cloth layer include fire-retardant viscose fibre for the fire-retardant non-woven fabrics layer that the material was made, adhere in the foaming layer at the fire-retardant non-woven fabrics layer back, adhere in the positive rete of glue on fire-retardant non-woven fabrics layer, contain the halogen-free fire-retardant material of environmental protection in the foaming layer, the foaming layer thickness is at 0.01-0.2 millimeter, the material of rete of glue is polyurethane, and the thickness of rete is at 5-30 microns. The utility model discloses the product has soft, abundant three-dimensional, ventilative moisture permeable, safety ring protects, high-efficient fire-retardant, the hole sealing char characteristics of feeling, and the product does not have steamed, heavy metal content hangs down, has good application prospect.

Description

Environment-friendly flame-retardant sofa fabric

Technical Field

The utility model relates to a function domestic fabrics especially relates to a fire-retardant sofa fabric.

Background

With the development and progress of the times, the requirements of people on the quality of home life are improved, and the requirements on the performance of textile materials are also continuously improved. Taking sofa cloth as an example, the market demands for flame retardant property and environmental protection property are gradually increased.

The BS5852 flame-retardant standard in the UK puts forward a definite flame-retardant requirement on sofa and soft chair cloth, the BS5852 is responded by the traditional bromine-antimony flame-retardant coating, the fabric is easy to burn through, so that the sponge on the back of the fabric is ignited by flame, and the fabric cannot pass the test of No. 1 flame source and No. 5 flame source of the BS 5852. BS 5852: in 2006, a sponge liner and a textile are often used for covering, after an external fire source is applied for a period of time, the conditions of afterflame, smoldering time, burning phenomenon, residual weight and the like of the fabric and the sponge are inspected (simulating the burning of flame on a sofa), and if the flame retardance is qualified, the product is generally required to have very good hole sealing performance and char forming performance. In the traditional antimony bromide type flame-retardant product, an antimony bromide compound is rapidly decomposed, enters a gas phase from a solid phase, captures combustible free radicals in the gas phase and interrupts exothermic reaction, so that only the flame-retardant fabric can be ensured, but the chemical fiber fabric cannot be prevented from melting at high temperature, the chemical fiber fabric cannot form an effective barrier layer, the sponge and other materials behind the fabric are directly exposed in front of flame, the corrosion of the flame to the sponge is difficult to block, and the test failure is caused. Therefore, the traditional bromine antimony flame retardant adhesive cannot easily meet the strict flame retardant requirement of BS 5852.

In the prior art, the high-performance flame-retardant coating adhesive adopting the carbon-forming hole sealing can be prepared to meet the requirements of BS 5852: 2006 required fire retardant sofa cloth.

Under the background of the current increasingly strict requirements on consumption upgrading and environmental protection, the market also puts forward new requirements on the flame-retardant sofa fabric, and the fabric is required to be breathable, soft, glossy, safe and good in fireproof effect. Recently, new environmental protection requirements are proposed by related organizations at home and abroad, and the sofa fabric is expected to meet new strict standards for environmental protection as far as possible under the condition of meeting flame retardance, for example, meeting the requirements of OEKO-TEX 100. The OEKO-TEX100 imposes extremely strict limitation on the content of extractable heavy metal (migratable heavy metal), the content of heavy metal such as arsenic, lead and the like is difficult to control below 1PPM in the traditional bromine antimony coating, the traditional (arsenic-containing) phosphorus flame retardant and related synergistic system. Aiming at the requirements of sofa fabric products with high environmental protection requirement, high flame retardant requirement, high functionality and comfort, the prior art field is lack of good solutions.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide an environment-friendly flame-retardant sofa fabric.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an environment-friendly flame-retardant sofa fabric comprises a sofa fabric layer, a hot-melt adhesive layer and a flame-retardant base fabric layer, wherein the sofa fabric layer is made of terylene with the gram weight of 120-300 g/square meter, the front surface and the back surface of the sofa fabric layer are respectively provided with a waterproof material layer, the hot-melt adhesive layer is a reticular hot-melt adhesive polymer layer, the flame-retardant base fabric layer comprises a flame-retardant non-woven fabric layer made of flame-retardant viscose fibers, a foaming layer adhered to the back surface of the flame-retardant non-woven fabric layer and an adhesive film layer adhered to the front surface of the flame-retardant non-woven fabric layer, the foaming layer contains an environment-friendly halogen-free flame-retardant material, the thickness of the foaming layer is 0.01-0.2 mm, the back surface of the adhesive film layer is made of polyurethane, the thickness of the adhesive film layer is 5-30 microns, and the hot-melt adhesive layer is positioned between the waterproof material layer of the sofa fabric layer and the foaming layer on the back surface of the flame-retardant base fabric layer, the hot melt adhesive layer realizes the compounding of the sofa fabric layer, the hot melt adhesive layer and the flame-retardant base cloth layer through the bonding effect of the hot melt adhesive layer.

Further, the sofa fabric layer is of a plain weave structure.

Furthermore, the thickness of the flame-retardant base cloth layer is 0.2-3 mm, and the thickness of the foaming layer is 0.02-0.1 mm.

Furthermore, the material of the hot melt adhesive layer is one of polyurethane hot melt adhesive, ethylene-vinyl acetate hot melt adhesive and nylon hot melt adhesive.

Furthermore, the waterproof material layers on the front surface and the back surface of the sofa fabric layer both contain hydrophobic nano silicon dioxide.

The utility model discloses a compound sofa precoat, the fire-retardant base cloth layer of netted hot melt adhesive high molecular layer bonding have good gas permeability and soft feeling. Fire-retardant base cloth layer include fire-retardant non-woven fabrics layer, adhesion that fire-retardant viscose fiber made for the material in the foaming layer at the fire-retardant non-woven fabrics layer back, adhesion in the positive glue film layer on fire-retardant non-woven fabrics layer, this kind of structure sets up, makes the utility model discloses the product has good bonding fastness and soft rich feeling, moreover, fire-retardant viscose is as the current product in market, prepares into fire-retardant non-woven fabrics layer, and fire-retardant charring nature is good, is difficult to burn, can give the utility model discloses the good fire retardance of product. The foaming layer and the adhesive film layer are respectively positioned on the back and the front of the flame-retardant non-woven fabric layer, so that the water resistance of the flame-retardant viscose base fabric is favorably improved, the migration loss of flame-retardant components is avoided, and the product is favorably subjected to a BS5852 water immersion experiment.

Drawings

Fig. 1 the overall schematic diagram of the present invention: sofa fabric layer 1, hot melt adhesive layer 2, fire-retardant base cloth layer 3,

waterproof material layer

11A, 11B.

Fig. 2 is a microstructure of the flame-retardant base fabric layer 3: a flame-retardant nonwoven fabric layer 31, a foaming layer 32 and an adhesive film layer 33.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The attached drawings are simplified schematic diagrams, and merely illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 and 2, the utility model relates to an environment-friendly flame-retardant sofa fabric, which comprises a sofa fabric layer 1, a hot-melt adhesive layer 2 and a flame-retardant bottom fabric layer 3, wherein the sofa fabric layer 1 is made of terylene with a gram weight of 300 g/m, the front and the back of the sofa fabric layer 1 are respectively provided with a waterproof material layer 11A and a waterproof material layer 11B, the hot-melt adhesive layer 2 is a reticular hot-melt adhesive polymer layer, the flame-retardant bottom fabric layer 3 comprises a flame-retardant non-woven fabric layer 31 made of flame-retardant viscose fiber, a foaming layer 32 adhered to the back of the flame-retardant non-woven fabric layer 31 and an adhesive film layer 33 adhered to the front of the flame-retardant non-woven fabric layer 31, the foaming layer 32 contains environment-friendly halogen-free flame-retardant material, the thickness of the foaming layer 32 is 0.01-0.2 mm, the adhesive film layer 33 is made of polyurethane, and the thickness of the adhesive film layer 33 is 5-30 μm, the hot melt adhesive layer 2 is located the sofa precoat 1 reverse waterproof material layer 11B reaches the 3 backs on fire-retardant base cloth layer between the foaming layer 32, hot melt adhesive layer 2 realizes through its adhesive action sofa precoat 1 hot melt adhesive layer 2 fire-retardant base cloth layer 3's complex.

The utility model discloses in, there are one deck

waterproof material layer

11A, 11B respectively in the front and the reverse side of sofa precoat 1, and existing positive waterproof antifouling of sofa surface fabric that does benefit to also has certain guard action to the reverse side of sofa, avoids the hot melt adhesive to permeate the inside or the front of sofa precoat, feels too stiff when avoiding bonding, can also strengthen the surface bonding of hot melt adhesive to the precoat. The

waterproof material layers

11A and 11B may be made of the same material or different materials.

In a preferable scheme, the

waterproof material layers

11A and 11B can both adopt commercially available hydrophobic nano silica materials, and can endow the sofa fabric with good waterproof and antifouling performances. According to the coating technology known in the art, the material containing the hydrophobic nano silica is sprayed and coated on the front and back sides of the sofa fabric layer 1, and the

waterproof material layers

11A and 11B can be formed.

The hot melt adhesive layer 2 is a reticular hot melt adhesive macromolecule layer, and according to the known technology in the field, the polyurethane hot melt adhesive, the ethylene-vinyl acetate hot melt adhesive and the nylon hot melt adhesive can be manufactured into the reticular hot melt adhesive layer 2 for sale, and the reticular hot melt adhesive omentum is more in the market. The net structure can make the compound have plump and three-dimensional, soft and comfortable hand feeling and also have good air permeability.

And the adhesive film layer 33 is adhered to the front surface of the flame-retardant non-woven fabric layer 31 and is made of polyurethane. That is, the polyurethane is coated on the surface of the flame-retardant non-woven fabric layer 31 by a coating technique commonly used in the art, so as to form an adhesive film layer. The polyurethane material is a common commercialized material, is used as an adhesive film layer, can protect a flame retardant in the flame-retardant adhesive from being corroded by water vapor, and is required to be subjected to a water immersion experiment in a BS5852 standard when testing No. 0 and No. 1 fire sources of the BS 5852. The front and back surfaces of the flame-retardant non-woven fabric are respectively provided with the adhesive film layer 33 and the foaming layer 32, so that the flame-retardant non-woven fabric is beneficial to the product to pass the test of a soaking experiment and keep the flame retardant property.

The utility model discloses in, what make as the material to fire-retardant viscose fiber fire-retardant non-woven fabrics layer 31 is the mature commercial product that can buy on the market.

The utility model discloses in, contain the halogen-free flame retardant material of environmental protection in the foaming layer 32, the halogen-free flame retardant material of environmental protection that this kind of viscose was used probably is pyrophosphate or other phosphates, also probably is silicon nitrogen system flame retardant, still can be other halogen-free flame retardant materials of environmental protection that are suitable for silica gel. In a word, the selected materials are all environment-friendly halogen-free flame retardant materials which are available on the market and are suitable for viscose. The utility model discloses do not adopt the bromine antimony coating, also do not adopt and contain the ammonium polyphosphate system of not enough environmental protection (the ammonium polyphosphate system that arsenic content exceeds standard), but adopt the halogen-free flame retardant material of environmental protection, can not have the hidden danger that the heavy metal exceeds standard. A person skilled in the art can directly obtain a foaming material of the environment-friendly halogen-free flame retardant material on the market, and coat the foaming material on the surface of the flame-retardant non-woven fabric layer 31 to obtain a foaming layer 32; or, a person skilled in the art can add a commercially available environment-friendly halogen-free flame retardant material into a foaming material (for example, foamed polyacrylate), mix the mixture uniformly and foam the mixture, and coat the mixture on the surface of the flame-retardant nonwoven fabric layer 31 to obtain a foamed layer (32).

Furthermore, the utility model discloses a multilayer structure's composite design for the product is whole to reach flame retardant efficiency, and can pass through the water immersion test, and fire behaviour is stable lasting.

The hot melt adhesive layer 2 is respectively bonded with the sofa fabric layer 1 and the flame-retardant base fabric layer 3, so that the environment-friendly flame-retardant sofa fabric is compounded.

The utility model discloses the product has soft, full solid, ventilative moisture permeable, safety ring protects, high-efficient fire-retardant, hole sealing char, the characteristics that the resilience is good of feeling, and the product does not contain halogen, heavy metal content low, and the product satisfies the fire-retardant upgrading demand of environmental protection of market to sofa fabric, has good application prospect.

Examples

The sofa fabric is prepared according to the above steps, and the specific materials and parameters are as follows:

table 1-2 is the utility model discloses the sample is according to relevant standard test fire-retardant, the data of feature for environmental protection, and the result shows, the utility model discloses the product has good fire behaviour and feature for environmental protection.

TABLE 1 flame retardancy of the samples

(use of BS 5852: part 1: 1979 ignition sources 1#)

TABLE 2 environmental protection properties of the samples

Note: ND represents that the content is lower than the detection limit and is not detected.

The embodiments are only used for illustrating the technical scheme of the invention and not for limiting the technical scheme of the invention. Any modification or partial replacement without departing from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. The environment-friendly flame-retardant sofa fabric is characterized in that: the sofa fabric comprises a sofa fabric layer (1), a hot melt adhesive layer (2) and a flame retardant base fabric layer (3), wherein the gram weight of the sofa fabric layer (1) is 120-300 g/m, the front surface and the back surface of the sofa fabric layer (1) are respectively provided with a waterproof material layer (11A) and a waterproof material layer (11B), the hot melt adhesive layer (2) is a reticular hot melt adhesive polymer layer, the flame retardant base fabric layer (3) comprises a foaming layer (32) containing an environment-friendly halogen-free flame retardant material, a flame retardant non-woven fabric layer (31) made of flame retardant viscose fibers and a glue film layer (33) made of polyurethane, the foaming layer (32) is 0.01-0.2 mm thick, the glue film layer (33) is 5-30 microns thick, the hot melt adhesive layer (2) is positioned between the waterproof material layer (11B) of the sofa fabric layer (1) and the foaming layer (32) on the back surface of the flame retardant base fabric layer (3), the hot melt adhesive layer (2) realizes the compounding of the sofa fabric layer (1), the hot melt adhesive layer (2) and the flame-retardant base cloth layer (3) through the bonding effect of the hot melt adhesive layer.

2. The environment-friendly flame-retardant sofa fabric according to claim 1, wherein: the sofa fabric layer (1) is of a plain weave structure.

3. The environment-friendly flame-retardant sofa fabric according to claim 1, wherein: the thickness of the flame-retardant base cloth layer (3) is 0.2-3 mm, and the thickness of the foaming layer (32) is 0.02-0.1 mm.

4. The environment-friendly flame-retardant sofa fabric according to claim 1, wherein: the material of the hot melt adhesive layer (2) is one of polyurethane hot melt adhesive, ethylene-vinyl acetate hot melt adhesive and nylon hot melt adhesive.