阅读说明：本技术 保压性高的帘式安全气囊用气袋制备方法及获得的气袋 (Method for producing curtain airbag having high pressure retention and curtain airbag obtained thereby ) 是由 庄建国 于 2021-08-16 设计创作，主要内容包括：本发明涉及一种保压性高的帘式安全气囊用气袋制备方法,包括以下步骤：准备帘式安全气囊用气袋的平纹涂胶面料；将平纹涂胶面料按照一定的图形进行裁剪；喷涂、粘合；自动取样设备将粘合一起的上下平纹层涂胶面料取走放置到固定的位置调湿处理；调试完毕后,运送到缝纫工序；缝纫机按照设定的程序对上下层平纹涂胶面料的涂胶部位进行缝纫成帘式安全气囊用气袋。本发明还涉及根据上述方法获得的保压性高的帘式安全气囊用气袋。(The invention relates to a preparation method of an airbag with high pressure maintaining performance for a curtain type safety airbag, which comprises the following steps: preparing plain weave gluing fabrics of an air bag for a curtain type safety air bag; cutting the plain-woven gummed fabric according to a certain pattern; spraying and bonding; taking the upper and lower plain layer glued fabrics adhered together by automatic sampling equipment and placing the fabrics in a fixed position for humidifying treatment; after debugging is finished, the sewing machine is conveyed to a sewing process; and sewing the gluing parts of the plain-woven gluing fabrics of the upper layer and the lower layer by a sewing machine according to a set program to form the curtain type air bag for the safety air bag. The present invention also relates to an airbag for a curtain airbag having high pressure retention properties, which is obtained by the above-described method.)

1. A method for manufacturing an airbag for a curtain airbag having high pressure maintaining properties, comprising the steps of:

preparing plain weave gluing fabrics of an air bag for a curtain type safety air bag;

cutting the plain-woven gummed fabric according to a certain pattern;

aligning the cut plain-woven gummed fabric gummed surfaces to the upper layer and the lower layer in a face-to-face mode on automatic gumming machine equipment, starting an automatic gumming machine, sucking the upper plain-woven gummed fabric from the lower plain-woven gummed fabric by an upper layer pressure adding plate of the automatic gumming machine through negative pressure, spraying glue on the surface of the lower plain-woven gummed fabric by a glue spraying head according to a set program, and automatically moving and transferring to the next station for spraying glue after spraying silica gel;

the upper layer pressurizing plate of the glue spraying station descends and pressurizes, and the upper layer plain-woven glued fabric and the lower layer plain-woven glued fabric are glued together through silicon glue sprayed on the surface of the lower layer plain-woven glued fabric;

humidifying the upper and lower plain layer glued fabric which is bonded together through the silica gel adhesive tape;

conveying the upper and lower ruled layer gluing fabrics which are bonded together after being subjected to moisture adjustment to a sewing process; and

and sewing the gluing parts of the plain-weave gluing fabrics of the upper layer and the lower layer to manufacture the curtain type air bag for the safety air bag.

2. The method of manufacturing a curtain airbag having high pressure maintaining properties according to claim 1, wherein the glue spraying speed of the automatic glue sprayer is 20 to 32m/min, and the moving speed of the glue spraying head on the fabric is 30 to 45 m/min.

3. The method for producing an airbag for a curtain airbag having high pressure-maintaining property according to claim 1, wherein,

the width of the adhesive tape is 7mm-10mm after the adhesive is sprayed, and the thickness of the adhesive tape is 0.7mm-1.2 mm.

4. The method for producing an airbag for a curtain airbag having high pressure-maintaining property according to claim 1, wherein,

the volume of the air bag is 30L-50L.

5. The method for producing an airbag for a curtain airbag having high pressure-maintaining property according to claim 1, wherein,

the fineness of the sewing thread is 1500-1800dtex, 3 threads are twisted together, the twist is 150-250 twist/m, and the sewing specification is as follows: 35-50 sewing threads/m.

6. The method for manufacturing an airbag for a curtain airbag having high pressure retention according to claim 1, wherein the humidity-controlled temperature is 23 ± 5 ℃ and the relative humidity is 40% to 60%.

7. A curtain bag for a high-dwelling curtain airbag according to any one of claims 1 to 6

The air bag for the curtain type safety air bag with high pressure maintaining performance is obtained by the preparation method.

8. The curtain airbag having high pressure-holding ability according to claim 7, wherein the bag has a pressure-holding ability of not less than 60% after being inflated for 6 seconds.

9. The curtain airbag having high pressure-holding ability according to claim 8, wherein the difference in thickness of the rubber strip is 20% or less.

10. The curtain bag for a high-dwelling curtain airbag according to claim 9, wherein the degree of peeling at the upper and lower rubber strips of the rubberized fabric is > 1300N.

Technical Field

The present invention relates to a method for producing an airbag for a curtain airbag, and more particularly, to a method for producing an airbag for a curtain airbag having high pressure retaining properties, and an airbag for a curtain airbag obtained by the method and having high pressure retaining properties.

Background

Curtain airbags are an important component of passive safety systems that are widely used today. In recent years, as the automobile market expands and the demand for safety increases, the curtain airbag has been increasingly assembled.

When the glue coating amount of the fabric for the traditional curtain type safety airbag is large, the pressure maintaining performance is high, but when an air bag made of the fabric is folded, the folding size of the air bag is large, and a large amount of space is occupied. The closed areas of the upper layer and the lower layer of the adopted one-step formed air bag are woven, and the flatness of the closed area and the flatness of the unfolded area are inconsistent due to surface gluing, so that the air bag pressure maintaining performance sometimes cannot achieve an ideal effect.

Disclosure of Invention

In one aspect of the present invention, there is provided a method for producing an airbag for a curtain airbag having high pressure maintaining properties, the method comprising the steps of:

preparing plain weave gluing fabrics of an air bag for a curtain type safety air bag;

cutting the plain-woven gummed fabric according to a certain pattern;

aligning the cut plain-woven gummed fabric gummed surfaces to the upper layer and the lower layer in a face-to-face mode on automatic gumming machine equipment, starting an automatic gumming machine, sucking the upper plain-woven gummed fabric from the lower plain-woven gummed fabric by an upper layer pressure adding plate of the automatic gumming machine through negative pressure, spraying glue on the surface of the lower plain-woven gummed fabric by a glue spraying head according to a set program, and automatically moving and transferring to the next station for spraying glue after spraying silica gel;

the upper layer pressurizing plate of the glue spraying station descends and pressurizes, and the upper layer plain-woven glued fabric and the lower layer plain-woven glued fabric are glued together through silicon glue sprayed on the surface of the lower layer plain-woven glued fabric;

humidifying the upper and lower plain layer glued fabric which is bonded together through the silica gel adhesive tape;

conveying the upper and lower ruled layer gluing fabrics which are bonded together after being subjected to moisture adjustment to a sewing process; and

and sewing the gluing parts of the plain-weave gluing fabrics of the upper layer and the lower layer to manufacture the curtain type air bag for the safety air bag.

In one embodiment, the silica gel for spray and bonding process of the present invention is composed of two components, a and B. The viscosity of the component A is 170-220 Pa.S; the viscosity of the component B is 200-250 Pa.S; a and B are as follows 1: 1 weight ratio, and the viscosity after stirring is 190-240 Pa.S, and the test method is the shear viscosity value under the condition of 10l/S of a shear rheometer.

In one embodiment, the fineness of the filaments for the plain gluing fabric is 470-700dtex, the warp density of the plain gluing fabric is 160-209 pieces/10 cm, the weft density of the plain gluing fabric is 160-209 pieces/10 cm, and the gluing amount of the plain gluing fabric is 25-40 g/min.

In one embodiment, the glue spraying speed of a glue spraying head of the automatic glue spraying machine is 20-32m/min, the moving speed of the glue spraying head on a glued fabric is 30-45m/min, the width of a glue strip between two glued fabrics after bonding is 7-10mm, and the thickness of the glue strip is 0.7-1.2 mm.

In one embodiment, the sewing thread of the present invention can be twisted from 3 filaments, with a total fineness of 1200-: the sewing thread is 35-50 threads/10 cm.

In one embodiment, the volume of the airbag for a curtain airbag in the present invention is 30L to 50L. The air bag volume test method comprises the following steps: PE round pellets are adopted, and the specification of the pellets is 160 g/L. Firstly, measuring the weight of the air bag as A, putting a PE pellet into the air bag, measuring the weight of the filled pellet and the curtain type air bag as B, and then converting the volume of the air bag according to the following formula:

V=（B-A）/160

the air bag glue for curtain type safety air bag and the silica gel for bonding are composed of two components A and B. The viscosity of the component A is 170-220 Pa.S; the viscosity of the component B is 200-250 Pa.S. A and B are as follows 1: the viscosity after 1 weight ratio mixing and stirring is 180-240 Pa.S. If the viscosity of the mixed silica gel is less than 180 Pa.S, the fastness is not good after the silica gel is bonded with the upper and lower layers of gluing fabrics, and the pressure maintaining performance of the air bag for the curtain type safety air bag is not good. If the viscosity of the mixed silica gel is more than 240 Pa.S, on one hand, the glue outlet speed of the glue coating head is influenced, and simultaneously, the silica gel on the plain-woven glue coating fabric on the upper layer and the lower layer is stripped from the plain-woven glue coating fabric in the blasting process, so that the pressure retaining property of the air bag is reduced.

The upper and lower layers of the air bag for the curtain type safety air bag are plain weave rubber coating fabrics, and the fineness of filaments for the plain weave rubber coating fabrics is as follows: 470-700 dtex; the warp density of the plain weave gummed fabric is as follows: 160-209 roots/10 cm; weft density of plain weave rubber coating fabric: 160-209 roots/10 cm; gluing amount of the plain weave gluing fabric: 25-40g/m². The fineness and the warp and weft density of the plain-weave gummed fabric are the specifications of the fabric for the common air bag. If the glue coating amount of plain weave glue coating fabric<25g/m²After the air bag is made, the pressure maintaining performance is reduced due to the small glue coating amount. If the glue coating amount of plain weave glue coating fabric>40g/m²After the air bag is made, the air bag is too hard to be folded easily and occupies a large amount of space.

The glue spraying speed of a glue spraying head of the automatic glue spraying and bonding equipment in the preparation method of the air bag for the curtain type safety air bag is 20-32 m/min; the moving speed of the glue spraying head on the glued fabric is 30-45 m/min; the width of the adhesive tape between the two glued fabrics after bonding is 7mm-10mm, and the thickness of the adhesive tape is 0.7mm-1.2 mm. If the glue spraying speed of the glue spraying head is less than 20 m/min, and the moving speed of the glue spraying head on the glued fabric is greater than 45m/min, the amount of silica gel on the fabric is small, the width of the glued tape is less than 7mm, and the thickness of the glued tape is less than 0.7mm, so that the pressure maintaining property and the stripping property of the air bag are influenced. If the glue spraying speed of the glue spraying head is greater than 32/min and the moving speed of the glue spraying head on the glued fabric is less than 30m/min, the amount of silica gel on the fabric is large, the width of the glued rubber strip is greater than 10mm, and the thickness of the glued rubber strip is greater than 1.2mm, so that the silica gel rubber strip is too hard, and the folding performance of the air bag is influenced.

The sewing thread of the air bag for the curtain type airbag is formed by twisting 3 filaments, the total fineness is 1200-1600dtex, the twist is 150-250 twist/m, and the tensile strength of the sewing thread is more than 80N. The size of the sewing is as follows: 35-50 roots/10 cm. The sewing thread adopts the specification of the current common sewing thread. If the specification is less than 35 threads/10 cm during sewing, the plain-woven rubber coated fabric on the upper layer and the lower layer of the air bag is easy to peel off, and the pressure maintaining performance of the air bag is affected. If the specification during sewing is more than 50 threads/10 cm, the needle penetrates too much during sewing, so that the needle holes of the adhesive tape between the plain-woven glued fabrics of the upper layer and the lower layer are too large, the adhesive tape is damaged too much, the sealing effect of the adhesive tape is influenced, and the pressure retaining property of the air bag is reduced.

The volume of the curtain airbag bag of the present invention is 30L to 50L. If the volume of the air bag for the curtain air bag is less than 30L, the thickness of the air bag which is expanded by the generated gas is small when the safety curtain air bag is exploded, and the head of a human body cannot be protected. If the volume of the airbag for the curtain airbag is more than 50L, the gas generated during the explosion of the airbag fills the whole airbag for a long time, and the airbag cannot be expanded in an effective time, so that the airbag does not play a role in protecting the head of a human body.

In the invention, the temperature of the humidity conditioning treatment is 23 +/-5 ℃, and the relative humidity is 40-60%.

In another aspect of the present invention, there is provided an airbag for a curtain airbag having high pressure retaining properties, which is obtained according to the above-described method.

According to the curtain type air bag for the safety air bag, after the air bag is inflated for 6 seconds, the pressure maintaining performance of gas in the air bag is more than or equal to 60%. If the pressure maintaining property is less than 60%, after the automobile rolls in a side collision way and rolls for 2 times or 3 times, the gas in the safety curtain type air bag leaks too fast, and the safety curtain type air bag cannot protect the head of a human body.

The curtain type air bag for the safety air bag has the thickness difference rate of the adhesive tape less than or equal to 20 percent. The thickness difference rate of the adhesive tape is more than or equal to 20 percent, the diameter difference between all the positions is large after the air bag is folded into a strip shape, on one hand, the air bag is not beneficial to being uniformly placed in a space, and meanwhile, the pressure maintaining performance of air between all the positions is inconsistent, so that the pressure maintaining performance of the air bag is reduced.

According to the curtain type air bag for the safety air bag, the stripping degree of the upper layer silicon adhesive part and the lower layer silicon adhesive part of the adhesive fabric is more than or equal to 1300N. According to the method of ISO13934-1, the upper and lower plain layer gummed fabrics of the air bag with sewing threads are cut into samples with the length of 16cm and the width of 5cm by taking the adhesive tapes as symmetry. And placing the sample which is unfolded to be 32cm long and 5cm wide into a tensile machine for testing, and peeling off the sample from the surface of the gummed fabric by using the broken adhesive tape or the silica gel adhered to the plain-woven gummed fabric by the adhesive tape. The stripping degree of the silicon adhesive part on the upper layer and the lower layer of the gluing fabric is less than 1300N, so that gas generated at high temperature and high pressure is easy to damage the silicon adhesive part when the air bag is exploded, and the pressure maintaining effect is influenced.

Drawings

The present invention will be better understood, and other features and advantages will become apparent, from the following detailed description when read in conjunction with the accompanying drawings, wherein:

fig. 1 is a schematic view of a curtain airbag bag having high pressure retaining properties according to the present invention.

Fig. 2 is a schematic sectional view of the curtain airbag bag having high pressure retaining property according to the present invention.

Detailed Description

The invention is further illustrated with reference to the following figures and specific examples. It should be understood that the following examples are given by way of illustration only and should not be construed to limit the present invention in any way. The scope of the invention is defined by the appended claims.

It is to be understood that the drawings of the present invention are solely for the purpose of illustrating the invention and are not necessarily drawn to scale.

It should also be understood that directional terms, such as "above," "below," "right," "left," "front," "back," "bottom," "top," "upper," "lower," and the like, that may be present in the present invention are merely for convenience in describing the present invention and should not be construed as limiting the invention in any way.

As shown in fig. 1 and 2, a curtain airbag bag 100 having high pressure retaining performance according to the present invention includes a bag plain fabric 10. The scrim 10 may be an air bag fabric known in the art, such as polyamide 66 filaments and polyester, and may have a denier of between 470 and 700dtex, and the silicone of the scrim may be silicone known in the art.

The curtain airbag 100 having high pressure retaining performance of the present invention further includes a silicone gel coating layer 20 in the middle portion. The silica gel layer 20 is formed by spraying silica gel with the viscosity of 180-240Pa & S on the gluing surface of the plain weave gluing fabric for the air bag.

The experimental method comprises the following steps:

1. volume of the air bag:

curtain air bag volume test method: PE round pellets are adopted, and the specification of the pellets is 160 g/L. Firstly, measuring the weight of the air bag as A, putting a PE pellet into the air bag, measuring the weight of the filled pellet and the curtain type air bag as B, and then converting the volume of the air bag according to the following formula:

V=（B-A）/160

2. pressure-holding property of the airbag:

according to the test method of ASTM D7559/7559M-09, an initial pressure of 75KPa was set, the bag was inflated, a plateau pressure V1 was recorded when the pressure peak reached a plateau, the peak pressure began to drop, the pressure of the gas in the bag after 6S (6 seconds) was measured at V2, and the packing pressure of the bag was calculated according to the formula (V1-V2)/V1X 100.

3. Thickness variation rate of adhesive tape:

the method for testing the adhesive tape thickness difference rate is to test the adhesive tape thickness of 10 different positions of the air bag section by using SEM (50 multiplying power), and the thickness difference rate is equal to the ratio of the difference between the maximum thickness and the minimum thickness to the maximum thickness.

Example (b):

example 1

The filament number is 470dtex, the density is 202 pieces/10 cm, and the coating weight is 40g/m²Polyamide 66 plain weaveAfter the fabric is cut according to a certain size, an upper layer and a lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the upper layer plain-weave glued fabric from the lower layer plain-weave glued fabric by using negative pressure, and silica gel with the component A of which the viscosity is 180 Pa.S and the component B of which the viscosity is 210 Pa.S is sprayed on the silica gel surface of the lower layer cut fabric after being mixed by an automatic glue mixing head by adopting a 6-axis manipulator. The speed of the glue spraying head is 28m/min, and the moving speed is 32 m/min. And lowering the upper layer pressure plate to pressurize after the glue spraying station, and bonding the upper and lower layers of glue coated fabrics together through the silicon glue sprayed on the surface of the lower layer plain weave glue coated fabric, wherein the width of the pressurized glue strip is 10mm, and the thickness of the glue strip is 1 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain air bag at the position of the silica gel strip according to the standard of 38 threads/10 cm according to a specified procedure. The physical properties of the airbag are shown in Table 1 below.

Example 2

The filament number is 550Dtex, the density is 180 pieces/10 cm, and the coating weight is 35g/m²After the polyamide 66 plain woven fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the plain coated fabric on the upper layer from the plain coated fabric on the lower layer by using negative pressure, and silica gel with the viscosity of 190 Pa.S component A and the viscosity of 225 Pa.S component B is mixed by an automatic glue mixing head and sprayed on the silica gel surface of the cut fabric on the lower layer by adopting a 6-axis manipulator. The speed of the glue spraying head is 26m/min, and the moving speed is 35 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 9mm, and the thickness of the glue strip is 0.92 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain type air bag at the position of the silica gel strip according to the standard of 42 threads/10 cm according to a specified procedure. The physical properties of the airbag are shown in Table 1 below.

Example 3

The filament number is 700dtex, the density is 160 pieces/10 cm, and the glue coating amount is 30g/m²The polyamide 66 plain weave of (1). After the fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the plain-woven glued fabric on the upper layer from the plain-woven glued fabric on the lower layer by utilizing negative pressure, and silica gel with the viscosity of 200Pa & S component A and the viscosity of 240Pa & S component B is mixed by an automatic glue mixing head and then sprayed on the silica gel surface of the cut fabric on the lower layer by adopting a 6-axis manipulator. The speed of the glue spraying head is 23m/min, and the moving speed is 41 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 7.5mm, and the thickness of the glue strip is 0.8 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain type air bag at the position of the silica gel strip according to the specification of 47 threads/10 cm according to a specified program. The physical properties of the airbag are shown in Table 1 below.

Example 4

The filament number is 550dtex, the density is 200 pieces/10 cm, and the glue coating amount is 35g/m²The polyester scrim of (1). After the fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the upper layer plain-weave glued fabric from the lower layer plain-weave glued fabric by using negative pressure, and silica gel with the component A of 190Pa & S viscosity and the component B of 225Pa & S viscosity is mixed by an automatic glue mixing head and sprayed on the silica gel surface of the cut fabric on the lower layer by adopting a 6-axis manipulator. The speed of the glue spraying head is 26m/min, and the moving speed is 35 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 9mm, and the thickness of the glue strip is 0.92 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain type air bag at the position of the silica gel strip according to the standard of 42 threads/10 cm according to a specified procedure. Qi (Qi)The various physical properties of the bag are shown in Table 1 below.

Comparative example 1

The filament number is 470dtex, the density is 202 pieces/10 cm, and the coating weight is 40g/m²The polyamide 66 plain weave of (1). Cutting according to a certain size, and directly sewing. The sewing thread is sewn into a curtain air bag according to a standard of 38 threads/10 cm and a specified program. Because the air bag has poor pressure maintaining performance, the pressure cannot reach stable pressure during the pressure maintaining performance experiment. The following table 1 shows various other physical properties of the airbag.

Comparative example 2

The filament number is 470dtex, the density is 202 pieces/10 cm, and the coating weight is 40g/m²The polyamide 66 plain weave of (1). After the fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the upper layer plain-woven glued fabric from the lower layer plain-woven glued fabric by using negative pressure, and silica gel with the component A of which the viscosity is 180 Pa.S and the component B of which the viscosity is 210 Pa.S is sprayed on the silica gel surface of the lower layer cut fabric after being mixed by an automatic glue mixing head by adopting a 3-axis manipulator. The speed of the glue spraying head is 28m/min, and the moving speed is 32 m/min. And lowering the upper layer pressure plate to pressurize after the glue spraying station, and bonding the upper and lower layers of glue coated fabrics together through the silicon glue sprayed on the surface of the lower layer plain weave glue coated fabric, wherein the width of the pressurized glue strip is 10mm, and the thickness of the glue strip is 1 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain air bag at the position of the silica gel strip according to the standard of 38 threads/10 cm according to a specified procedure. The physical properties of the airbag are shown in Table 1 below.

Comparative example 3

The filament number is 470Dtex, the density is 202 pieces/10 cm, and the coating weight is 40g/m²The polyamide 66 plain weave of (1). After the glue is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, the automatic glue sprayer is started, and an upper layer pressurizing plate of the automatic glue sprayer utilizes negative pressure to spread an upper plain glue surfaceAnd (3) sucking the materials away from the plain-weave gummed fabric at the lower layer, and spraying the component A with the viscosity of 180Pa & S and the component B with the viscosity of 210Pa & S on the silica gel surface of the cut fabric at the lower layer after mixing by using a 6-axis manipulator through an automatic rubber mixing head. The speed of the glue spraying head is 18m/min, and the moving speed is 47 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 6.8mm, and the thickness of the glue strip is 0.65 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain air bag at the position of the silica gel strip according to the standard of 38 threads/10 cm according to a specified procedure. The physical properties of the airbag are shown in Table 1 below.

Comparative example 4

The filament number is 550dtex, the density is 180 pieces/10 cm, and the glue coating amount is 35g/m²After the polyamide 66 plain woven fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the plain coated fabric on the upper layer from the plain coated fabric on the lower layer by using negative pressure, and silica gel with the viscosity of 190 Pa.S component A and the viscosity of 225 Pa.S component B is mixed by an automatic glue mixing head and sprayed on the silica gel surface of the cut fabric on the lower layer by adopting a 6-axis manipulator. The speed of the glue spraying head is 26m/min, and the moving speed is 35 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 9mm, and the thickness of the glue strip is 0.92 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain type air bag at the position of the silica gel strip according to the standard of 25 threads/10 cm according to a specified procedure. The physical properties of the airbag are shown in Table 1 below.

Comparative example 5

The filament number is 700dtex, the density is 160 pieces/10 cm, and the glue coating amount is 30g/m²Polyamide 66 plain weaveA fabric. After the fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the plain-woven glued fabric on the upper layer from the plain-woven glued fabric on the lower layer by utilizing negative pressure, and silica gel with the component A of which the viscosity is 200 Pa.S and the component B of which the viscosity is 240 Pa.S is sprayed on the silica gel surface of the cut fabric on the lower layer after being mixed by an automatic glue mixing head by adopting a 6-axis manipulator. The speed of the glue spraying head is 23m/min, and the moving speed is 41 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 7.5mm, and the thickness of the glue strip is 0.8 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain type air bag at the position of the silica gel strip according to the specification of 55 threads/10 cm according to a specified program. The physical properties of the airbag are shown in Table 1 below.

Comparative example 6

The filament number is 550dtex, the density is 200 pieces/10 cm, and the glue coating amount is 20g/m²The polyester scrim of (1). After the fabric is cut according to a certain size, the upper layer and the lower layer are aligned and placed on automatic glue sprayer equipment, an automatic glue sprayer is started, a pressure adding plate on the upper layer of the automatic glue sprayer sucks the plain-woven glued fabric on the upper layer from the plain-woven glued fabric on the lower layer by using negative pressure, and silica gel with the component A of which the viscosity is 140 Pa.S and the component B of which the viscosity is 155 Pa.S is sprayed on the silica gel surface of the cut fabric on the lower layer after being mixed by an automatic glue mixing head by adopting a 6-axis manipulator. The speed of the glue spraying head is 34m/min, and the moving speed is 28 m/min. And lowering the upper layer pressure plate to pressurize the glue sprayed position, and bonding the upper and lower layers of glue-coated fabrics together through the silicon glue sprayed on the surface of the lower layer of plain-weave glue-coated fabric, wherein the width of the pressurized glue strip is 12mm, and the thickness of the glue strip is 1.25 mm. And the automatic sampling equipment takes the upper and lower layers of the glued fabric which are bonded together away and places the glued fabric in a fixed position for humidifying treatment. The sewing thread is sewn into a curtain type air bag at the position of the silica gel strip according to the standard of 42 threads/10 cm according to a specified procedure. The physical properties of the airbag are shown in Table 1 below.

It should be understood that various modifications and alterations to the preferred embodiments described herein will be apparent to those skilled in the art. Such modifications and variations can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. Accordingly, such modifications and variations are within the scope of the appended claims.