CN111196073A - Automobile interior composite fabric and production method thereof - Google Patents

Automobile interior composite fabric and production method thereof Download PDF

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Publication number
CN111196073A
CN111196073A CN201811373892.4A CN201811373892A CN111196073A CN 111196073 A CN111196073 A CN 111196073A CN 201811373892 A CN201811373892 A CN 201811373892A CN 111196073 A CN111196073 A CN 111196073A
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China
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sponge
hot melt
roll
melt adhesive
pur hot
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Chinese (zh)
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苏日旺
韦秀容
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Individual
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Individual
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Priority to CN201811373892.4A priority Critical patent/CN111196073A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B2037/1253—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives curable adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552—Fatigue strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

The invention relates to an automotive interior fabric and a production method thereof, aiming at solving the problem of toxicity of the existing automotive interior fabric produced by adopting a flame compounding process; provides a production method of a composite fabric for automobile interior decoration, which comprises a base fabric compounding step and a surface fabric compounding step; the base cloth compounding step is to unreel the center of the sponge roll and glue the sponge roll by a gluing device to form a PUR hot melt glue layer; the bottom substrate roll is formed by compounding a central unwinding roll with a sponge coated with PUR hot melt adhesive through a pressing roller to form a composite material, and then the composite material is wound in the center, stands and is cured for later use; the surface cloth compounding step is to unreel the center of a leather roll and glue the leather roll by a gluing device to form a PUR hot melt glue layer; and unwinding the center of the composite roll, compounding the composite roll with leather coated with PUR hot melt adhesive through a pressing roller to form a composite fabric, winding the center, coating, standing and curing to obtain a finished product. The production method is green and environment-friendly, and meets the standards of a host factory through VOC and odor atomization detection.

Description

Automobile interior composite fabric and production method thereof
Technical Field
The invention relates to a composite fabric, in particular to an automotive interior composite fabric and a production method thereof.
Background
The automotive interior fabric is generally formed by bonding and compounding leather, polyurethane sponge and base cloth, and is applied to automotive interior decoration, such as seat covers, door panels, instrument panels and the like. The existing compounding method mainly adopts a flame compounding process. Flame compounding processes have various drawbacks.
First, the flame compounding has high requirements on equipment, the performance of a common domestic flame compounding machine cannot meet the compounding requirements of the automobile fabric, the operation management requirements on the equipment are high, and the quality problem is easy to occur.
Secondly, the requirements on the aspect of environmental protection are difficult to meet, the surface layer of the sponge is melted by heat generated by combustion of organic gases such as methane and the like in flame compounding, and the fabric and the sponge are bonded together by utilizing the bonding performance of molten polyurethane. Because of the high cost of polyester sponge, the polyether sponge is commonly used as the raw material for producing and processing the interior decoration material in the automobile field. For the polyether sponge, because the surface adhesion performance is not good after the polyether sponge is melted, a special flame complexing agent is needed to treat the complexing surface of the polyether sponge so as to increase the adhesion performance. The flame can produce toxic gas in the burning of sponge surface, remains easily in the composite product, needs subsequent high temperature heated air circulation to remove, has great harm to the environment.
With public concerns about health and environmental protection, various defects of the flame compounding process adopted by the automotive interior composite fabric cannot meet the environmental protection requirements of consumers on automotive interiors.
Disclosure of Invention
The invention aims to solve the technical problem of toxicity in the conventional flame compounding process for producing the automotive interior fabric, and provides an environment-friendly automotive interior composite fabric and a production method thereof.
The technical scheme for realizing the purpose of the invention is as follows: the production method is characterized by comprising a base cloth compounding step and a surface cloth compounding step; the base cloth compounding step is to place a sponge roll on an unreeling device with a central unreeling function, and the sponge passes through a gluing roller of a gluing device after unreeling and adjusting conveying tension; heating solid PUR hot melt adhesive (moisture curing reaction type polyurethane hot melt adhesive) to 95-110 ℃ for melting, pumping the melt into a glue groove of a gluing device, transferring and coating the melted PUR hot melt adhesive on sponge through a carving roller, and forming a PUR hot melt adhesive layer with the glue coating amount of 7-11 g/square meter on the surface of a sponge layer; putting a bottom substrate roll on an unreeling device with a central unreeling function, unreeling the bottom substrate roll, adjusting tension, stretching into a press roller to compound the bottom substrate and the sponge coated with the PUR hot melt adhesive layer to form a sponge and bottom substrate composite material, adjusting rolling tension to roll the compounded sponge and bottom substrate composite material by using a central rolling device to form a composite material roll, rolling the composite material roll to a preset diameter, changing the roll, and standing until the PUR hot melt adhesive is solidified; the surface cloth compounding step is to place a leather roll on an unreeling device with a central unreeling function, unreel the leather and adjust the conveying tension, and then enable the leather to pass through a gluing roller of a gluing device; heating the solid PUR hot melt adhesive to 95-110 ℃, melting the solid PUR hot melt adhesive, pumping the molten PUR hot melt adhesive into a glue groove of a gluing device, transferring and coating the molten PUR hot melt adhesive on the leather through an engraving roll, and forming a PUR hot melt adhesive layer with the glue coating amount of 11-13 g/square meter on the surface of the layer of the leather; placing a composite material roll of the sponge and the bottom substrate which are compounded together and cured by the PUR hot melt adhesive on an unreeling device with a central unreeling function, unreeling the composite material roll, adjusting tension, stretching into a laminating roller, compounding the composite material of the sponge and the bottom substrate and leather coated with the PUR hot melt adhesive layer together to form a composite fabric, adjusting rolling tension, rolling the compounded composite fabric by using a central rolling device, changing the roll after rolling to a preset diameter, and coating and standing the composite fabric roll until the PUR hot melt adhesive is cured.
In the production method of the automobile interior composite fabric, the bottom substrate is a breathable film, and the coating amount of the PUR hot melt adhesive on the sponge coating surface is 9-11 g/square meter. Or the bottom base material is base fabric, and the coating weight of the PUR hot melt adhesive on the sponge coating surface is 7-9 g/square meter.
In the production method of the composite fabric for the automobile interior, the composite environment temperature in the base cloth compounding step and the shell fabric compounding step is 23-28 ℃, and the environment humidity is 60% -65%.
In the production method of the automobile interior composite fabric, the rolled composite fabric coiled material is coated to keep the rolled composite fabric coiled material in a cylindrical shape.
In the production method of the automotive interior composite fabric, the PUR hot melt adhesive curing time of the composite material of the sponge and the bottom substrate is not less than 15 hours, and the PUR hot melt adhesive curing time of the composite fabric is not less than 20 hours.
In the production method of the automobile interior composite fabric, the compounding speed of the sponge and the bottom substrate in the base cloth compounding step is 22-27 m/min, and the compounding speed of the leather and sponge plus bottom substrate composite material in the shell cloth compounding step is 18-22 m/min.
In the production method of the automotive interior composite fabric, in the process of transferring and coating the molten PUR hot melt adhesive on the sponge or leather by the gluing device, the heat conduction oil flows into the glue groove and the engraving roller to heat the glue groove and the engraving roller, and the temperature of the glue groove and the engraving roller is kept between 95 and 110 ℃.
The technical scheme for realizing the purpose of the invention is as follows: the composite fabric for the automobile interior decoration is characterized by being manufactured by the production method.
Compared with the prior art, the invention has the following advantages:
1. the production process produces less toxic and harmful substances, has less toxicity to production workers and meets the requirement of environmental protection.
2. The finished product of the produced automotive interior composite fabric meets the standards of automotive main engine plants through VOC, smell and atomization detection.
3. The finished product of the automotive interior composite fabric has good heat resistance, weather resistance and solvent resistance.
Drawings
Fig. 1 is a schematic structural view of the composite fabric for automotive interior according to the present invention.
Fig. 2 is a schematic structural view of the composite machine for automobile interior trim composite fabric of the present invention.
FIG. 3 is a production flow chart of the composite fabric for automotive interior according to the present invention.
Part names and serial numbers in the figure:
the device comprises a first unreeling device 1, a central reeling device 2, a gluing device 3, a rolling and compounding device 4, a tension adjusting device 5, a sponge roll 6, a leather roll 7, a bottom cloth roll 8, a compound material roll 9, a compound surface material roll 10, a second reeling device 11, leather 20, sponge 30 and bottom cloth 40.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 1, the composite fabric for automobile interior trim in the present embodiment is composed of leather 20 as a surface layer, sponge 30 as a middle layer, and a base substrate 40 as a base layer for protecting the sponge. Wherein the sponge 30 is a polyurethane sponge, typically 3 or 5 mm thick, and the underlying substrate 40 can be a base fabric (gauze) or a breathable film.
The composite production of the composite fabric is divided into two steps of base fabric compounding and surface fabric compounding, wherein the base fabric compounding step is to compound the sponge 30 and the base fabric or the breathable film together to form a composite material; the step of compounding the shell fabric is a step of compounding the leather and the previously compounded composite material to form the composite shell fabric.
In the base cloth compounding step, a sponge roll 6 is placed on a first unwinding device 1, the first unwinding device 1 adopts a center for unwinding, the sponge passes through a gap between an engraving roller and a driven roller of a gluing device 3 under the traction of guide cloth, and the tension of the sponge before entering the gluing device 3 is adjusted through a tension adjusting device 5 on the compounding machine. Determining the gluing width of the sponge and locking a glue blocking valve; and starting a glue pump to suck glue, heating the solid PUR hot melt adhesive to 95-110 ℃, injecting the molten PUR hot melt adhesive into the glue groove, and maintaining the glue storage amount of the glue groove at about 6cm height. And meanwhile, heat conducting oil is introduced into the glue groove and the carving roller, and the glue groove and the carving roller are heated to maintain the temperature between 95 and 110 ℃.
And (3) placing the base fabric roll 8 on a second unwinding device 11, unwinding the base fabric by adopting the center of the second unwinding device 11, leading the base fabric to pass through a gap between a driving roller and a driven roller in the rolling and compounding device 4 under the traction of guide cloth, and adjusting the tension of the base fabric before the base fabric enters the rolling and compounding device by using an adjusting device 5.
The sponge penetrates into the gap between the engraving roll and the driven roll and then is closed to open the gluing device 3, the engraving roll transfers the molten PUR hot melt adhesive in the adhesive groove to the drawing layer surface of the sponge, and a PUR hot melt adhesive coating layer is formed on the drawing layer surface of the sponge. The coating amount of the PUR hot melt adhesive on the sponge pattern layer is slightly different according to different base materials of the bottom layer, and when the sponge and the base fabric are compounded, the coating amount of the PUR hot melt adhesive is 7-9 g/square meter, preferably 8 g/square meter; when the sponge and the breathable film are compounded, the coating weight of the PUR hot melt adhesive is 9-11 g/square meter, preferably 10 g/square meter.
After the rubber-coated sponge enters a gap between a driving roller and a driven roller in the rolling and compounding device 4, the rolling and compounding device 4 is closed to roll and compound the sponge and the base fabric to form a composite material, the composite material is rolled by a central rolling device, and the tension of the composite material is adjusted by a tension adjusting device before rolling. And when the rolling diameter of the composite material reaches about 1.2 m, changing the roll. And coating and standing the replaced composite material roll for more than 15 hours so as to solidify the PUR hot melt adhesive in the composite material.
In the base cloth compounding step, the gap between the engraving roll and the driven roll of the gluing device 3 and the gap between the driving roll and the driven roll of the rolling compounding device are adjusted in advance according to the thickness of the sponge and the type of the bottom base material. The thickness of the sponge is usually selected to be 5 mm when the composite fabric is a main fabric used on an automobile, if the composite bottom base material is a base fabric, the gap between the engraving roll and the driven roll of the gluing device 3 is adjusted to be 4.7 mm, and the gap between the driving roll and the driven roll in the rolling composite device is adjusted to be 4.5 mm; if the composite bottom substrate is a breathable film, the gap between the engraving roll and the driven roll of the gluing device is adjusted to be 4.8 mm, and the gap between the driving roll and the driven roll in the rolling and compounding device is adjusted to be 4.6 mm. When the composite fabric is an auxiliary fabric for automobiles, the thickness of the sponge is usually selected to be 3 mm, if the composite bottom base material is a base fabric, the gap between an engraving roller and a driven roller of a gluing device is adjusted to be 2.7 mm, and the gap between a driving roller and a driven roller in a rolling composite device is adjusted to be 2.5 mm; if the composite bottom substrate is a breathable film, the gap between the engraving roll and the driven roll of the gluing device is adjusted to be 2.8 mm, and the gap between the driving roll and the driven roll in the rolling and compounding device is adjusted to be 2.6 mm.
In the base cloth compounding step, the ambient temperature is 23-28 ℃ and the ambient humidity is 60% -65%. The unwinding linear speed of the sponge, the unwinding linear speed of the base fabric and the winding linear speed of the composite material are the same and are about 25 m/min. The compounding step of the sponge and the base cloth is the same as the compounding step of the sponge and the breathable film, and the differences are that the coating amount of the PUR hot melt adhesive on the sponge, the gap between the engraving roll and the driven roll in the gluing device and the gap between the driving roll and the driven roll in the rolling compounding device are slightly different.
The surface cloth compounding step is to compound the sponge and base cloth or the composite material of the breathable film which is compounded and cured in the base cloth compounding step with leather, and the specific steps are as follows:
the leather roll 7 is placed on the first unreeling device 1, the first unreeling device 1 unreels by adopting the center, the leather passes through a gap between an engraving roller and a driven roller of the gluing device 3 under the traction of guide cloth, and the tension of the leather before entering the gluing device 3 is adjusted by a tension adjusting device 5 on the compound machine. Determining the sizing breadth of the leather and locking a glue blocking valve; and starting a glue pump to suck glue, and injecting the solid PUR hot melt adhesive which is melted at the temperature of 95-110 ℃ into the glue groove to maintain the glue storage amount of the glue groove at about 6cm and fill up the glue. And meanwhile, heat conducting oil is introduced into the glue groove and the carving roller, and the glue groove and the carving roller are heated to maintain the temperature between 95 and 110 ℃.
The composite material roll 9 of the sponge and the base cloth or the breathable film is placed on a second unreeling device 11, the second unreeling device 11 is unreeled in the center, the base cloth passes through a gap between a driving roller and a driven roller in a rolling and compositing device 4 under the traction of guide cloth, and the tension of the composite material before entering the rolling and compositing device is adjusted through an adjusting device 5.
The leather is closed and the gluing device is opened after penetrating into the gap between the carving roller and the driven roller, the carving roller transfers the molten PUR hot melt adhesive in the adhesive groove to the surface of the drawing of the leather, and a PUR hot melt adhesive coating layer is formed on the surface of the drawing of the leather. The PUR hot melt adhesive coating amount on the sponge pattern layer is 11-13 g/square meter, and preferably 12 g/square meter.
After the glued leather enters a gap between a driving roller and a driven roller in the rolling and compounding device, the rolling and compounding device is closed to roll and compound the leather and the compound material to form a compound fabric, the compound fabric is rolled by a central rolling device, and the tension of the compound material is adjusted by a tension adjusting device before rolling. And when the rolling diameter of the composite fabric reaches about 1 m, changing the roll. And coating and standing the replaced composite fabric coil for more than 20 hours so as to solidify the PUR hot melt adhesive in the composite material. The composite fabric roll can be coated by a composite material of sponge and base cloth or a breathable film, and the composite material is used for coating 4-5 layers outside the composite fabric roll.
In the step of compounding the shell fabric, the clearance between the engraving roll and the driven roll of the gluing device and the clearance between the driving roll and the driven roll of the rolling compounding device are adjusted in advance according to the thickness of the sponge. The thickness of the leather is 0.8-1 mm, the clearance between the carving roller and the driven roller of the gluing device is adjusted to be 0.6-0.8 mm, and when the thickness of the sponge is 5 mm, the clearance between the driving roller and the driven roller in the rolling and compounding device is adjusted to be 5.5-5.7 mm; when the thickness of the sponge is 3 mm, the gap between the driving roller and the driven roller in the rolling and compounding device is adjusted to 3.5-3.7 mm.
In the base cloth compounding step, the ambient temperature is 23-28 ℃ and the ambient humidity is 60% -65%. The unwinding linear speed of the sponge, the unwinding linear speed of the base fabric and the winding linear speed of the composite material are the same and are all 20 m/min.
The automotive interior composite fabric produced by the fabric composite production method disclosed by the invention generates few toxic and harmful substances in the production process, has little toxicity to production workers, and meets the requirement of environmental protection.
The VOC test result of the fabric compounded by the compounding method by using a bag method (BT/SGMWJ0835-2013) is as follows:
TABLE 1 VOC test results for automotive interior composite fabrics
Test substance CAS NO. MDL(μg/m3) Test results (. mu.g/m)3) Limit value (μ g/m)3)
Benzene and its derivatives 71-43-2 5 N.D 30
Toluene 108-88-3 5 12 400
Ethylbenzene production 100-41-4 5 7 200
Xylene 1330-20-7 15 19 400
Styrene (meth) acrylic acid ester 100-42-5 5 N.D 50
TVOC - 5 3452* -
Formaldehyde (I) 50-500-0 5 14 400
Acetaldehyde 75-07-0 5 53 150
Acrolein 107-02-8 5 N.D 100
Acetone (II) 67-64-1 5 22 -
Note: MDL: the method detection limit;
N.D: not detected;
*: the data is super-linear and the results are referenced.
The finished product of the automotive interior composite fabric meets the limit standard of an automotive host factory through VOC, odor and atomization detection. The finished product of the automotive interior composite fabric has good heat resistance, weather resistance and solvent resistance.

Claims (9)

1. A production method of a composite fabric for automotive interior, the composite fabric is composed of leather on the surface layer, sponge on the middle layer and a bottom substrate positioned at the bottom layer and used for protecting the sponge, and is characterized in that the production method comprises a base fabric compounding step and a surface fabric compounding step;
the base cloth compounding step is to place a sponge roll on an unreeling device with a central unreeling function, and the sponge passes through a gluing roller of a gluing device after unreeling and adjusting conveying tension; heating the solid PUR hot melt adhesive to 95-110 ℃ for melting, pumping the molten PUR hot melt adhesive into a glue groove of a gluing device, transferring and coating the molten PUR hot melt adhesive on the sponge through an engraving roll, and forming a PUR hot melt adhesive layer with the glue coating amount of 7-11 g/square meter on the surface of the sponge layer; putting a bottom substrate roll on an unreeling device with a central unreeling function, unreeling the bottom substrate roll, adjusting tension, stretching the bottom substrate roll into a press roller, compounding the bottom substrate and the sponge coated with the PUR hot melt adhesive layer to form a composite material of the sponge and the bottom substrate, adjusting reeling tension, reeling the compounded composite material of the sponge and the bottom substrate by using a central reeling device, reeling to a preset diameter, replacing reels, and standing until the PUR hot melt adhesive is solidified;
the surface cloth compounding step is to place a leather roll on an unreeling device with a central unreeling function, unreel the leather and adjust the conveying tension, and then enable the leather to pass through a gluing roller of a gluing device; heating the solid PUR hot melt adhesive to 95-110 ℃, melting the solid PUR hot melt adhesive, pumping the molten PUR hot melt adhesive into a glue groove of a gluing device, transferring and coating the molten PUR hot melt adhesive on the leather through an engraving roll, and forming a PUR hot melt adhesive layer with the glue coating amount of 11-13 g/square meter on the surface of the layer of the leather; placing a composite material roll of the sponge and the bottom substrate which are compounded together and cured by the PUR hot melt adhesive on an unreeling device with a central unreeling function, unreeling the composite material roll, adjusting tension, stretching into a laminating roller, compounding the composite material of the sponge and the bottom substrate and leather coated with the PUR hot melt adhesive layer together to form a composite fabric, adjusting rolling tension, rolling the compounded composite fabric by using a central rolling device, changing the roll after rolling to a preset diameter, and coating and standing the composite fabric roll until the PUR hot melt adhesive is cured.
2. The production method of the composite fabric for automobile interiors according to claim 1, wherein the bottom substrate is a breathable film, and the coating amount of the PUR hot melt adhesive on the sponge coating surface is 9-11 g/m.
3. The method for producing the composite fabric for automobile interior decoration according to claim 1, wherein the base substrate is a base fabric, and the coating amount of the PUR hot melt adhesive on the sponge coating surface is 7 to 9 g/m.
4. The method for producing the composite fabric for automobile interior decoration as claimed in claim 1, wherein the composite ambient temperature in the base fabric compositing step and the shell fabric compositing step is 23-28 ℃, and the ambient humidity is 60% -65%.
5. The method for producing the composite fabric for automobile interior decoration according to claim 1, wherein the rolled composite fabric coiled material is wrapped so that the rolled composite fabric coiled material maintains a cylindrical shape.
6. The method for producing the composite fabric for automobile interiors according to claim 1, wherein the curing time of the PUR hot melt adhesive of the composite material of the sponge and the bottom substrate is not less than 15 hours, and the curing time of the PUR hot melt adhesive of the composite fabric is not less than 20 hours.
7. The method for producing the composite fabric for automobile interiors according to any one of claims 1 to 6, wherein the speed of the combination of the sponge and the underlying substrate in the base cloth combining step is 22-27 m/min, and the speed of the combination of the leather and the sponge + the underlying substrate in the shell cloth combining step is 18-22 m/min.
8. The method for producing composite automobile interior trim panels according to any one of claims 1 to 6, wherein the adhesive applicator is configured to apply the molten PUR hot melt adhesive to the sponge or leather by transferring the molten PUR hot melt adhesive to the adhesive tank and the engraved roller using heat transfer oil flowing into the adhesive tank and the engraved roller to heat the adhesive tank and the engraved roller and to maintain the temperature of the adhesive tank and the engraved roller between 95 and 110 degrees.
9. An automotive interior composite fabric, characterized in that the automotive interior composite fabric is manufactured by the production method according to any one of claims 1 to 8.
CN201811373892.4A 2018-11-19 2018-11-19 Automobile interior composite fabric and production method thereof Pending CN111196073A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113815288A (en) * 2021-09-10 2021-12-21 无锡琳华新材料科技有限公司 Automobile flame composite fabric and production line thereof

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CN203077721U (en) * 2013-02-21 2013-07-24 嘉兴市正麒高新面料复合有限公司 Fabric in multi-layer composite structure
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CN106183352A (en) * 2016-08-31 2016-12-07 江苏远华轻化装备有限公司 A kind of double-purpose fabric compound machine using PU glue, PUR glue
CN108045064A (en) * 2017-12-20 2018-05-18 浙江同辉纺织股份有限公司 No solvent residue composite sand fermentation material manufacturing technique
CN207509925U (en) * 2017-11-29 2018-06-19 南京奥普织物有限公司 A kind of vehicle inflaming retarding fabric and seat, ceiling containing the fabric

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Publication number Priority date Publication date Assignee Title
CN203077740U (en) * 2013-02-21 2013-07-24 嘉兴市正麒高新面料复合有限公司 Improved fabric in multi-layer composite structure
CN203077721U (en) * 2013-02-21 2013-07-24 嘉兴市正麒高新面料复合有限公司 Fabric in multi-layer composite structure
CN104708889A (en) * 2015-03-17 2015-06-17 东莞市远大机械有限公司 PUR coating laminator
CN106183352A (en) * 2016-08-31 2016-12-07 江苏远华轻化装备有限公司 A kind of double-purpose fabric compound machine using PU glue, PUR glue
CN207509925U (en) * 2017-11-29 2018-06-19 南京奥普织物有限公司 A kind of vehicle inflaming retarding fabric and seat, ceiling containing the fabric
CN108045064A (en) * 2017-12-20 2018-05-18 浙江同辉纺织股份有限公司 No solvent residue composite sand fermentation material manufacturing technique

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113815288A (en) * 2021-09-10 2021-12-21 无锡琳华新材料科技有限公司 Automobile flame composite fabric and production line thereof

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Application publication date: 20200526