CN211112887U - Low-odor low-temperature-resistant synthetic rubber leather - Google Patents
Low-odor low-temperature-resistant synthetic rubber leather Download PDFInfo
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- CN211112887U CN211112887U CN201921574058.1U CN201921574058U CN211112887U CN 211112887 U CN211112887 U CN 211112887U CN 201921574058 U CN201921574058 U CN 201921574058U CN 211112887 U CN211112887 U CN 211112887U
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Abstract
The utility model discloses a low-odor low-temperature-resistant synthetic rubber leather, which comprises a base cloth layer, a hot melt adhesive layer, a synthetic rubber layer and a surface layer which are sequentially laminated; the hot melt adhesive layer is an EVA hot melt adhesive layer or an SIS adhesive layer. The utility model discloses a synthetic rubber leather, its physical properties can compare favourably with polyvinyl chloride synthetic leather, and it can compare favourably with polyurethane synthetic leather to feel, has low temperature resistant tortuous, zero VOC, zero DMF and feature of environmental protection moreover.
Description
Technical Field
The utility model relates to an synthetic leather especially relates to a low-odor low-temperature-resistant synthetic rubber leather.
Background
With the rapid development of economy in China, the demand of leather products is increased rapidly, and the grade required by customers is higher and higher. Leather has been widely used in various lives of people. The leather is best selected as genuine leather, but the genuine leather seriously pollutes the environment in the production process, and the yield is low in the leather processing process, the price is high, and the middle-grade and low-grade leather products are difficult to accept. Today advocating energy conservation, environmental protection and sustainable development, people develop imitation leather fabrics to replace animal leather, thereby avoiding the damage to animals and reducing the damage to the environment.
The artificial synthetic leather is commonly called as imitation leather, is a general name of synthetic materials such as PVC, PU and the like, is manufactured by attaching PU or PVC materials with different formula proportions on the basis of textile cloth, can be processed according to different requirements, and has the characteristics of various varieties, high utilization rate and lower single price than real leather. At present, the external leather of the artificial leather mainly adopts materials such as polyvinyl chloride, polyurethane and the like. The common polyvinyl chloride synthetic leather has hard hand feeling and large smell, and cannot avoid the problems of Volatile Organic Compounds (VOCS) and the like due to the separation of a plasticizer, while the polyurethane synthetic leather has complex production process, wear resistance and hydrolysis resistance and the production process and finished products contain harmful substances of dimethyl formamide (DMF), so the environment-friendly performance is not enough. Therefore, there is a need to develop a synthetic rubber leather which has physical properties comparable to those of polyvinyl chloride synthetic leather, hand feeling comparable to those of polyurethane synthetic leather, low temperature flexing resistance (no damage to leather after flexing 5 ten thousand times at-40 ℃), zero VOC, zero DMF and environmental protection.
SUMMERY OF THE UTILITY MODEL
The utility model provides a synthetic rubber leather with low odor and low temperature resistance, which aims to solve the defects.
The above object of the present invention is achieved by the following technical solutions: a low-odor low-temperature-resistant synthetic rubber leather comprises a base cloth layer, a hot-melt adhesive layer, a synthetic rubber layer and a surface layer which are sequentially laminated; the hot melt adhesive layer is an EVA hot melt adhesive layer or an SIS adhesive layer.
The utility model provides a low-odor low-temperature-resistant synthetic rubber leather's hot melt adhesive bonding layer adhesive strength is big, plays the effect that improves synthetic rubber leather bonding fastness, and base cloth layer and table department layer play the effect that improves synthetic leather machinery physical property, make it can replace the PVC synthetic leather on mechanical properties, and table department layer skin feels can replace PU synthetic leather and genuine leather. Moreover, the synthetic rubber raw material, the hot melt adhesive film and the auxiliary agent do not contain harmful substances such as Volatile Organic Compounds (VOCS), dimethyl formamide (DMF) and the like, and accord with laws and regulations such as Reach, Rohs and the like, so the method has the environmental protection requirements of production process and finished products that the synthetic rubber raw material, the hot melt adhesive film and the auxiliary agent do not contain Volatile Organic Compounds (VOCS), dimethyl formamide and the like. The utility model discloses a set up hot melt adhesive adhesion coating cooperation base cloth layer and synthetic rubber layer, obtained low temperature performance stability, for example can not take place to matter under the low temperature-40 ℃ condition and become, have low smell, wear-resisting, low temperature resistant, resistant tortuous, excellent performance such as compliance is good, possess simultaneously production process and finished product and do not contain volatile organic compounds, environmental protection requirements such as dimethylformamide.
Further, the preparation raw materials of the synthetic rubber layer comprise the following raw material components in parts by weight: 70-90 parts of synthetic rubber; 10-30 parts of calcium carbonate; 0.02-0.06 part of light stabilizer; 0.02-0.06 part of antioxidant; 2-6 parts of a cross-linking agent.
Preferably, the synthetic rubber may be 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, etc.
Preferably, the calcium carbonate may be 30 parts, 25 parts, 20 parts, 15 parts, 10 parts, etc.
Preferably, the light stabilizer may be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, etc.
Preferably, the antioxidant may be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, etc.
Preferably, the crosslinking agent may be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, and the like.
The utility model discloses a preparation method of low-odor low-temperature-resistant synthetic rubber leather, which comprises the following steps:
(1) base fabric rubberizing preparation: laminating by using a hot melt adhesive film, heating the base fabric by a hot laminating machine according to the temperature of 120-150 ℃ to reach the laminating temperature condition of the hot melt adhesive film, and laminating the hot melt adhesive film and the base fabric to form a first composite film;
(2) compounding a synthetic rubber layer: mixing preparation raw materials according to a preparation raw material formula of the synthetic rubber layer, stirring by a calender with ten thousand horsepower to obtain a synthetic rubber micelle, and calendering the synthetic rubber micelle by a four-roll calender at the temperature of 130-180 ℃ to obtain the synthetic rubber layer; the synthetic rubber layer and the first composite film are compounded in a pressing mode to form a second composite film;
(3) PU film treatment: adding PU resin to a coating machine, uniformly coating the PU resin working solution on the surface of the synthetic rubber membrane layer of the second composite membrane, drying by a tunnel type hot air dryer at 90-120 ℃ (such as 90 ℃, 92 ℃, 95 ℃, 98 ℃, 100 ℃, 105 ℃, 110 ℃, 115 ℃ or 120 ℃ and the like), and coiling for later use to obtain the synthetic rubber leather;
(4) and (3) processing by a grain absorbing machine: unreeling the synthetic rubber leather, heating the surface of the synthetic rubber leather, sucking the grains through a grain sucking roller, cooling and rolling to obtain the leather grain synthetic rubber.
Compared with the prior art, the utility model the advantage be:
(1) because the EVA hot melt adhesive film and the SIS adhesive are adopted, the bonding strength is greatly improved and can reach 6kg/30mm at most.
(2) The synthetic physical property is excellent, the hand feeling of the formed product is dry and comfortable, the texture of the leather is clear, the moisture absorption and the air permeability are not inferior to the hand feeling of the leather, and the synthetic leather can completely replace PVC, PU artificial leather and leather.
(3) The leather has the characteristics of no quality change under the condition of low temperature of 40 ℃ below zero, wear resistance (under the pressure of 1kg, the wear phenomenon is not obvious after the leather is ground for 1000 turns), and low temperature flexing resistance (the leather has no damage sign after flexing for 5 ten thousand times at the temperature of 40 ℃ below zero).
(4) The synthetic rubber leather adopts a calendering process, so that the bonding strength of the base cloth and the rubber is improved, and on the other hand, the hot melt adhesive film can be used for preventing air pollution caused by coating an adhesive layer in the prior art.
(5) The synthetic rubber leather is mainly made of synthetic rubber, the auxiliary agent and the matched material of the synthetic rubber leather are environment-friendly materials, harmful substances such as Volatile Organic Compounds (VOCS), dimethyl formamide (DMF), heavy metals and the like are not contained, the synthetic rubber leather conforms to laws and regulations such as Reach, Rohs and the like, and the leather manufacturing process and the finished product conform to environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a low-odor low-temperature-resistant synthetic rubber leather comprises a base fabric layer 1, a hot melt adhesive layer 2, a synthetic rubber layer 3 and a surface layer 4 which are sequentially laminated; the hot melt adhesive layer 2 is an EVA hot melt adhesive layer or an SIS adhesive layer.
The utility model provides a low-odor low-temperature-resistant synthetic rubber leather's hot melt adhesive bonding layer adhesive strength is big, plays the effect that improves synthetic rubber leather bonding fastness, and base cloth layer and table department layer play the effect that improves synthetic leather machinery physical property, make it can replace the PVC synthetic leather on mechanical properties, and table department layer skin feels can replace PU synthetic leather and genuine leather. Moreover, the synthetic rubber raw material, the hot melt adhesive film and the auxiliary agent do not contain harmful substances such as Volatile Organic Compounds (VOCS), dimethyl formamide (DMF) and the like, and accord with laws and regulations such as Reach, Rohs and the like, so the method has the environmental protection requirements of production process and finished products that the synthetic rubber raw material, the hot melt adhesive film and the auxiliary agent do not contain Volatile Organic Compounds (VOCS), dimethyl formamide and the like. The utility model discloses a set up hot melt adhesive adhesion coating cooperation base cloth layer and synthetic rubber layer, obtained low temperature performance stability, for example can not take place to matter under the low temperature-40 ℃ condition and become, have low smell, wear-resisting, low temperature resistant, resistant tortuous, excellent performance such as compliance is good, possess simultaneously production process and finished product and do not contain volatile organic compounds, environmental protection requirements such as dimethylformamide.
Further, the preparation raw materials of the synthetic rubber layer comprise the following raw material components in parts by weight: 70-90 parts of synthetic rubber; 10-30 parts of calcium carbonate; 0.02-0.06 part of light stabilizer; 0.02-0.06 part of antioxidant; 2-6 parts of a cross-linking agent.
Preferably, the synthetic rubber may be 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, etc.
Preferably, the calcium carbonate may be 30 parts, 25 parts, 20 parts, 15 parts, 10 parts, etc.
Preferably, the light stabilizer may be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, etc.
Preferably, the antioxidant may be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, etc.
Preferably, the crosslinking agent may be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, and the like.
The utility model discloses a preparation method of low-odor low-temperature-resistant synthetic rubber leather, which comprises the following steps:
(1) base fabric rubberizing preparation: laminating by using a hot melt adhesive film, heating the base fabric by a hot laminating machine according to the temperature of 120-150 ℃ to reach the laminating temperature condition of the hot melt adhesive film, and laminating the hot melt adhesive film and the base fabric to form a first composite film;
(2) compounding a synthetic rubber layer: mixing preparation raw materials according to a preparation raw material formula of the synthetic rubber layer, stirring by a calender with ten thousand horsepower to obtain a synthetic rubber micelle, and calendering the synthetic rubber micelle by a four-roll calender at the temperature of 130-180 ℃ to obtain the synthetic rubber layer; the synthetic rubber layer and the first composite film are compounded in a pressing mode to form a second composite film;
(3) PU film treatment: adding PU resin to a coating machine, uniformly coating the PU resin working solution on the surface of the synthetic rubber membrane layer of the second composite membrane, drying by a tunnel type hot air dryer at 90-120 ℃ (such as 90 ℃, 92 ℃, 95 ℃, 98 ℃, 100 ℃, 105 ℃, 110 ℃, 115 ℃ or 120 ℃ and the like), and coiling for later use to obtain the synthetic rubber leather;
(4) and (3) processing by a grain absorbing machine: unreeling the synthetic rubber leather, heating the surface of the synthetic rubber leather, sucking the grains through a grain sucking roller, cooling and rolling to obtain the leather grain synthetic rubber.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (1)
1. A low-odor low-temperature-resistant synthetic rubber leather is characterized in that: comprises a base cloth layer, a hot melt adhesive layer, a synthetic rubber layer and a surface layer which are sequentially laminated; the hot melt adhesive layer is an EVA hot melt adhesive layer or an SIS adhesive layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921574058.1U CN211112887U (en) | 2019-09-21 | 2019-09-21 | Low-odor low-temperature-resistant synthetic rubber leather |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921574058.1U CN211112887U (en) | 2019-09-21 | 2019-09-21 | Low-odor low-temperature-resistant synthetic rubber leather |
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| CN211112887U true CN211112887U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552210A (en) * | 2019-09-21 | 2019-12-10 | 广东大丰新材料有限公司 | Low-odor low-temperature-resistant synthetic rubber leather and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552210A (en) * | 2019-09-21 | 2019-12-10 | 广东大丰新材料有限公司 | Low-odor low-temperature-resistant synthetic rubber leather and preparation method thereof |
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Denomination of utility model: Synthetic rubber leather with low odor and low temperature resistance Effective date of registration: 20221031 Granted publication date: 20200728 Pledgee: Agricultural Bank of China Limited Jiangmen Xinhui Sub branch Pledgor: Guangdong Dafeng New Material Co.,Ltd. Registration number: Y2022980020113 |