Automobile seat cushion with multi-layer structure and preparation process of automobile seat cushion

Abstract

The invention relates to the field of automobile seat cushions, in particular to an automobile seat cushion with a multi-layer structure and a preparation process thereof, a bottom layer is mounted on an automobile base in a contact manner, and an inner layer, a passive temperature control layer, a waterproof layer and an outer layer are sequentially arranged upwards above the bottom layer; the filling material in the bottom layer comprises PVC (polyvinyl chloride) dripping plastic, the filling material in the inner layer comprises gabardine, the filling material in the passive temperature control layer comprises paraffin and polyurea-formaldehyde resin, the filling material in the waterproof layer comprises diving materials, and the filling material in the outer layer comprises polyamide cloth. According to the invention, the outer layer, the waterproof layer, the passive temperature control layer, the inner layer and the bottom layer are arranged in the seat cushion, and the passive temperature control layer is prepared by compounding the phase change microcapsules and the memory sponge, so that the seat cushion can automatically realize temperature regulation according to the environment temperature, the summer temperature of the seat cushion is reduced, the winter temperature of the seat cushion is increased, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile seat cushion, and particularly relates to a multi-layer automobile seat cushion and a preparation process thereof. BACKGROUND

[0002] The automobile seat cushion is an in-vehicle product designed to protect the original seat of the automobile and improve the comfort of driving and riding. Its core functions include reducing seat wear, relieving driving fatigue, adapting to seasonal needs, and providing healthy support through material and process design.

[0003] Traditional automobile seat cushions often do not have passive temperature control function, and their warm-keeping or heat-dissipating effect completely depends on the ambient temperature, which leads to sweating due to stuffiness after sitting for a long time in summer, and the seat is ice-cold and bone-chilling when getting on the car in winter, and cannot continuously provide comfortable riding experience. Therefore, there is an urgent need for an automobile seat cushion with passive temperature control function and a preparation process thereof. SUMMARY

[0004] The present application relates to the technical field of automobile seat cushion, and particularly relates to a multi-layer automobile seat cushion and a preparation process thereof.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A multi-layer automobile seat cushion and a preparation process thereof, comprising a bottom layer, the bottom layer is installed in contact on the automobile base, and an inner layer, a passive temperature control layer, a waterproof layer and an outer layer are sequentially arranged upwards above the bottom layer; the filling material in the bottom layer comprises PVC drop plastic, the filling material in the inner layer comprises gabardine, the filling material in the passive temperature control layer comprises paraffin and polyurea-formaldehyde resin, the filling material in the waterproof layer comprises diving material, and the filling material in the outer layer comprises cotton yarn cloth.

[0007] A preparation process of a multi-layer automobile seat cushion, comprising the following steps:

[0008] S1: outer layer preparation;

[0009] A: 98% regenerated nylon and 2% bamboo fiber are blended to ensure the balance of wear resistance and air permeability, a high-speed rapier loom is used for three-dimensional weaving, and a three-dimensional network structure is formed;

[0010] B: a silane-based self-cleaning agent is coated on the base fabric by dip padding process, and is dried and cured at 160 DEG C, and the water droplet contact angle is greater than or equal to 160 DEG ;

[0011] C: a fiber laser system is used to punch holes on the surface of the nylon cloth to form a three-dimensional air permeable network, so as to complete the preparation of the outer layer;

[0012] S2: waterproof layer preparation;

[0013] A: SBR is mixed with foaming agent, and foamed into shape at 180℃ by continuous foaming machine, the foaming layer thickness is 10mm, the hardness is 35 Shore C, and the density is 0.32g / cm 3 ;

[0014] B: the hook-and-loop fabric is compounded with SBR foaming layer by using hot melt adhesive;

[0015] S3: passive temperature control layer preparation;

[0016] A: phase change microcapsules are prepared by interfacial polymerization method using paraffin as core material and polyurea-formaldehyde resin as wall material;

[0017] B: phase change microcapsules are compounded with memory sponge, the volume filling rate is 75%, 25% expansion space is reserved, and uniform distribution is ensured by vacuum filling machine;

[0018] S4: inner layer and bottom layer preparation;

[0019] A: cotton fabric is woven by air-jet loom, then food-grade PVC drop plastic paste with solid content of 60% is coated on the outside of the fabric, and finally dot matrix is formed by rotary screen printing machine;

[0020] S5: overall assembly;

[0021] A: the outer layer, waterproof layer, passive temperature control layer, inner layer and bottom layer are bonded by three-roll press, the adhesive is water-based polyurethane adhesive, and the adhesive layer thickness is 0.2mm;

[0022] B: the edges of the cushion are sealed by using high-frequency welding machine, and burrs are removed;

[0023] C: wear resistance test, temperature control performance test and pressure distribution test are carried out on the cushion, and the cushion is packaged after the tests are completed.

[0024] Preferably, the base fabric mixed in step S1-A has a grammage of ≥320g / m 2 , and the warp and weft density is ≥1300 threads / inch.

[0025] Preferably, the wavelength of the fiber laser system is 1064nm, the power is 20W, the hole diameter of the perforation is 0.8mm, and the density is 25 holes / cm 2 .

[0026] Preferably, the phase change microcapsules prepared in step S3-A have a particle size of 10-20μm, and latent heat ≥180J / g.

[0027] Preferably, the density of the memory sponge in step S3-B is 50D, and the working pressure of the vacuum filling machine is-0.09MPa.

[0028] Preferably, the warp density of the air-jet loom in the step S4-A is 400 / inch, and the weft density is 300 / inch.

[0029] Preferably, the dot diameter of the dot matrix in the step S4-A is 4mm, the height is 2mm, and the density is 15 needles / inch.

[0030] Preferably, the pressure of the three-roller press in the step S5-A is 0.5MPa, and the speed is 2m / min.

[0031] The beneficial effects of the present application are that the cushion is provided with an outer layer, a waterproof layer, a passive temperature control layer, an inner layer and a bottom layer, and the passive temperature control layer is prepared by compounding phase change microcapsules and memory sponge, so that the cushion can automatically adjust the temperature according to the environmental temperature, so as to reduce the summer temperature and improve the winter temperature, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 A structure diagram of a multi-layer structure automobile seat cushion is provided for the present application;

[0033] Fig. 2 A structure diagram of a multi-layer structure automobile seat cushion is provided for the present application;

[0034] In the figure: 1 outer layer, 2 waterproof layer, 3 passive temperature control layer, 4 inner layer, 5 bottom layer. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0036] REFERENCE Figs. 1-2 A multi-layer structure automobile seat cushion, including a bottom layer 5, the bottom layer 5 is installed on the automobile base, and the inner layer 4, the passive temperature control layer 3, the waterproof layer 2 and the outer layer 1 are sequentially arranged above the bottom layer 5. The filling material in the bottom layer 5 includes PVC drop plastic, the filling material in the inner layer 4 includes astrakhan, the filling material in the passive temperature control layer 3 includes paraffin and polyurea-formaldehyde resin, the filling material in the waterproof layer 2 includes diving material, and the filling material in the outer layer 1 includes cotton fabric.

[0037] A preparation process of a multi-layer structure automobile seat cushion, including the following steps:

[0038] S1: outer layer preparation;

[0039] A: 98% regenerated nylon and 2% bamboo fiber are blended to ensure the balance of wear resistance and air permeability, and a high-speed rapier loom is used for three-dimensional weaving to form a three-dimensional net structure;

[0040] B: Apply silane-based self-cleaning agent on the base fabric by padding process, dry and cure at 160°C, water droplet contact angle ≥160°;

[0041] C: Use a fiber laser system to punch holes on the surface of the nylon fabric to form a three-dimensional breathable network to complete the preparation of the outer layer;

[0042] S2: Waterproof layer preparation;

[0043] A: Mix styrene-butadiene rubber with a foaming agent and form a foam layer by a continuous foaming machine at 180°C, with a thickness of 10mm, a hardness of 35 Shore C, and a density of 0.32g / cm 3 ;

[0044] B: Use hot melt adhesive to composite the hook and loop fabric with the SBR foam layer;

[0045] S3: Passive temperature control layer preparation;

[0046] A: Use paraffin as the core material and polyurea-formaldehyde resin as the wall material to prepare phase change microcapsules by interfacial polymerization;

[0047] B: Composite the phase change microcapsules with memory foam with a volume filling rate of 75%, leaving 25% expansion space, and ensure uniform distribution by vacuum filling machine;

[0048] S4: Inner layer and bottom layer preparation;

[0049] A: Use an air jet loom to weave cotton fabric, then coat the outside with food-grade PVC drop casting slurry with a solid content of 60%, and finally form a dot matrix by rotary screen printing machine;

[0050] S5: Overall assembly;

[0051] A: Bond the outer layer, waterproof layer, passive temperature control layer, inner layer and bottom layer by three-roll press, with water-based polyurethane adhesive as the glue, and the glue layer thickness is 0.2mm;

[0052] B: Use high-frequency welding machine to edge seal the cushion edges and remove burrs;

[0053] C: Perform wear resistance test, temperature control performance test and pressure distribution test on the cushion, and after the test is completed, it can be packaged.

[0054] In step S1-A, the base fabric has a weight of ≥320g / m 2 , and the warp and weft density is ≥1300 threads / inch. This ensures a balance between wear resistance and breathability to improve user experience.

[0055] The wavelength of the fiber laser system is 1064 nm, the power is 20 W, the diameter of the hole is 0.8 mm, and the density is 25 holes / cm 2 The air permeability of the outer layer formed is greater than or equal to 12000 g / m 2 / 24h, so as to ensure the air permeability of the outer layer.

[0056] The particle size of the phase change microcapsule prepared in step S3-A is 10-20 μm, and the latent heat is greater than or equal to 180 J / g. The density of the memory sponge in step S3-B is 50D, and the working pressure of the vacuum filling machine is-0.09 MPa. By compounding the phase change microcapsule with the memory sponge, automatic passive temperature regulation is realized, and the temperature drop in summer is less than or equal to 5°C, and the temperature rise in winter is less than or equal to 3°C.

[0057] The warp density of the air-jet loom in step S4-A is 400 roots / inch, and the weft density is 300 roots / inch. The inner layer woven in this way has a certain anti-skid property to prevent the material from deforming greatly inside.

[0058] The dot diameter of the dot matrix in step S4-A is 4 mm, the height is 2 mm, and the density is 15 needles / inch.

[0059] The pressure of the three-roll press in step S5-A is 0.5 MPa, and the speed is 2 m / min.

[0060] In this embodiment, by adopting the regenerated nylon and bamboo fiber blended outer layer, and combining three-dimensional weaving and laser drilling technology, the wear resistance is improved, and a high-efficiency air permeation network is also constructed to ensure dryness in summer and warmth in winter.

[0061] The passive temperature control system can automatically adjust the surface temperature of the cushion through the synergistic effect of the phase change microcapsule and the bamboo charcoal fiber, adapt to different climate environments, and provide users with a natural temperature buffering experience.

[0062] Further, when the ambient temperature rises, the material in the phase change microcapsule absorbs heat and undergoes a phase change, changing from a solid state to a liquid state, absorbing excess heat, thereby slowing the rise in the surface temperature of the cushion.

[0063] When the ambient temperature decreases, the phase change microcapsule that has previously absorbed heat slowly releases the stored heat, changing from a liquid state back to a solid state, thereby slowing the decrease in the surface temperature of the cushion.

[0064] Through the slow rebounding property of the memory sponge, heat loss can be reduced, and the phase change microcapsule can be more evenly distributed, thereby achieving a more lasting temperature regulation effect.

[0065] The following table shows the parameter comparison between the product in this embodiment and the conventional product on the market.

[0066]

[0067] In the application, the cushion is provided with an outer layer 1, a waterproof layer 2, a passive temperature control layer 3, an inner layer 4 and a bottom layer 5. The passive temperature control layer 3 is prepared by compounding phase change microcapsules and memory sponge, so that the cushion can automatically adjust the temperature according to the ambient temperature, so as to reduce the summer temperature and improve the winter temperature, thereby improving the user experience.

[0068] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the application according to the technical solution and the inventive concept of the application, which should be covered in the protection scope of the application.

Claims

1. A multilayered automotive seat cushion comprising a bottom layer (5), characterized in that, The bottom layer (5) is installed on the automobile base, and the inner layer (4), the passive temperature control layer (3), the waterproof layer (2) and the outer layer (1) are sequentially arranged above the bottom layer (5) in sequence from top to bottom; The filling material in the bottom layer (5) comprises PVC plastic drops, the filling material in the inner layer (4) comprises astrakhan, the filling material in the passive temperature control layer (3) comprises paraffin and polyurea-formaldehyde resin, the filling material in the waterproof layer (2) comprises diving material, and the filling material in the outer layer (1) comprises cotton fabric.

2. A process for making a multi-layered automotive seat cushion according to claim 1, wherein, The method comprises the following steps: S1: outer layer preparation; A: 98% regenerated polyamide and 2% bamboo fiber are blended to ensure the balance of wear resistance and air permeability, and a high-speed rapier loom is used for three-dimensional weaving to form a three-dimensional network structure; B: a silane-based self-cleaning agent is coated on the base fabric by the padding process, and is dried and cured at 160 DEG C, with a water droplet contact angle of greater than or equal to 160 DEG ; C: a fiber laser system is used to punch holes in the polyamide fabric to form a three-dimensional air permeable network to complete the preparation of the outer layer; S2: waterproof layer preparation; A: The butadiene rubber was mixed with a foaming agent, and foamed and molded by a continuous foaming machine at 180°C to a foamed layer thickness of 10 mm, a hardness of 35 Shore C, and a density of 0.32 g / cm 3 ; B: hot melt adhesive is used to composite the hook-and-loop fabric and the SBR foaming layer; S3: passive temperature control layer preparation; A: paraffin is used as the core material, and polyurea-formaldehyde resin is used as the wall material, and phase change microcapsules are prepared by interfacial polymerization; B: the phase change microcapsules are compounded with memory sponge, the volume filling rate is 75%, 25% expansion space is reserved, and a vacuum filling machine is used to ensure uniform distribution; S4: inner layer and bottom layer preparation; A: a jet loom is used to weave cotton fabric, then a food-grade PVC plastic drop slurry with a solid content of 60% is coated on the outside of the cotton fabric, and finally a rotary screen printing machine is used to form a dot matrix; S5: overall assembly; A: the outer layer, the waterproof layer, the passive temperature control layer, the inner layer and the bottom layer are bonded by a three-roll press, the adhesive is water-based polyurethane adhesive, and the adhesive layer thickness is 0.2mm; B: a high-frequency welding machine is used to edge seal the cushion edge and remove burrs; C: the cushion is tested for wear resistance, temperature control performance and pressure distribution, and after the test is completed, the cushion is packaged.

3. A process for the preparation of a multilayer automotive seat cushion according to claim 2, characterized in that, The base cloth blended in the step S1-A has a basis weight of ≥ 320 g / m 2 , warp and weft density ≥ 1300 threads / inch.

4. A process for making a multi-layered automotive seat cushion according to claim 2, wherein, The wavelength of the fiber laser system is 1064 nm, the power is 20 W, the aperture of the hole is 0.8 mm, and the density is 25 holes / cm 2 .

5. A process for making a multi-layered automotive seat cushion according to claim 2, wherein, The phase change microcapsules prepared in step S3-A have a particle size of 10-20μm and a latent heat of greater than or equal to 180J / g.

6. A process for making a multi-layered automotive seat cushion according to claim 2, wherein, The density of the memory sponge in step S3-B is 50D, and the working pressure of the vacuum filling machine is -0.09MPa.

7. A process for making a multi-layered automotive seat cushion according to claim 2, wherein, The warp density of the jet loom in step S4-A is 400 threads / inch, and the weft density is 300 threads / inch.

8. A process for making a multi-layered automotive seat cushion according to claim 2, wherein, The dot diameter of the dot matrix in step S4-A is 4mm, the height is 2mm, and the density is 15 needles / inch.

9. A process for making a multi-layered automotive seat cushion according to claim 2, wherein, The pressure of the three-roll press in step S5-A is 0.5MPa, and the speed is 2m / min.

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