阅读说明：本技术 聚乙烯醇缩丁醛余料改性造粒物和其制造工艺以及利用颗粒物使用流延方式生产产品的方法 (Polyvinyl butyral remainder modified granulated substance, manufacturing process thereof and method for producing product by using casting mode through granulated substance ) 是由 陈丽云 于 2020-04-01 设计创作，主要内容包括：一种聚乙烯醇缩丁醛余料改性造粒物,是在生产玻璃和在聚乙烯醇缩丁醛(PVB)夹层膜中将产生的余料充分利用起来后,通过改性造粒工艺制成聚乙烯醇缩丁醛(PVB)颗粒,然后再将聚乙烯醇缩丁醛(PVB)颗粒使用流延方式生产各种产品,以此来达到余料利用和环保的目的；另外、本发明采用流延方式生产淋覆纺织物、双面织物、淋覆铝箔、夹网人造革以及发泡人造革等产品比目前采用的压延机生产方式,具有更低的人工成本和能源消耗成本,同时也减少厂房占地面积和空气污染。(A polyvinyl butyral surplus material modified granulating material is characterized in that after glass production and surplus material generated in a polyvinyl butyral (PVB) interlayer film are fully utilized, polyvinyl butyral (PVB) particles are prepared through a modified granulating process, and then the polyvinyl butyral (PVB) particles are used for producing various products in a flow casting mode, so that the purposes of surplus material utilization and environmental protection are achieved; in addition, compared with the currently adopted calender production mode, the invention adopts the curtain coating mode to produce the products such as the spray coated textile, the double-sided fabric, the spray coated aluminum foil, the sandwich artificial leather, the foaming artificial leather and the like, has lower labor cost and energy consumption cost, and simultaneously reduces the floor area of a factory building and air pollution.)

1. The modified granulation material of the polyvinyl butyral residual material is characterized by comprising the polyvinyl butyral residual material, calcium carbonate, an anti-hydrolysis agent, a plasticizer, a cold-resistant agent, a coloring agent, an antioxidant, zinc stearate, calcium stearate, an anti-ultraviolet agent and a high polymer material, wherein the polyvinyl butyral residual material is modified and then refined at a high temperature through a colloidal particle device.

2. The modified granulated substance of the residual polyvinyl butyral material as claimed in claim 1, wherein the weight ratio of the residual polyvinyl butyral material, calcium carbonate, hydrolysis resistance agent, plasticizer, cold resistance agent, colorant, antioxidant, zinc stearate, calcium stearate, ultraviolet resistance agent and high molecular material is 100: 5-150: 0.5-2: 3-50: 2-8: 1-30: 1-2: 2-3.6: 0.2-1.2: 0.3-1: 0.002-0.007.

3. A process for modifying a granulation mass with a poly (vinyl butyral) residue as defined in claim 1, comprising the steps of:

firstly, the raw materials are added into an internal mixer according to the weight ratio and mixed for 5 to 30 minutes to carry out primary plasticization, and the internal mixing temperature is 110-;

then, conveying the material into a first granulator, and carrying out secondary plasticization through heating, pressurizing and filtering when the material passes through a screw;

then, conveying the material into a second granulator, and plasticizing for three times by heating, pressurizing and filtering when passing through a screw;

finally, the polyvinyl butyral is cut into polyvinyl butyral particles through a die.

4. The process for modifying the granules of the residual polyvinyl butyral as claimed in claim 3, wherein the first granulator is heated to 150-165 ℃; the heating temperature of the second granulator is 120-150 ℃; the polyvinyl butyral particles have a diameter of 2mm-8mm and a length of 3mm-8 mm.

5. A method for producing polyvinyl butyral drenched textile fabric by utilizing polyvinyl butyral excess material to modify granules and using a tape casting mode is characterized by comprising the following steps:

1) sending the fabric;

2) pasting, and coating an adhesive on the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into an oven to bake off the solvent in the adhesive, wherein the temperature of the oven is 100-130 ℃;

4) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of the fabric coated with the adhesive through a die;

5) after the molten polyvinyl butyral is coated on the surface of the fabric with the adhesive, embossing treatment is carried out;

6) cooling and shaping the polyvinyl butyral sprayed on the surface of the fabric;

7) and rolling to obtain the finished product.

6. A method for modifying a granulating material by using a polyvinyl butyral residual material and sandwiching a polyvinyl butyral film between two fabrics by using a tape casting mode is characterized by comprising the following steps of:

1) respectively sending the fabrics by two sending machines;

2) applying an adhesive to the fabric delivered from one of the conveyors, the adhesive being applied to the surface of the fabric;

3) baking, namely, sending the cloth coated with the adhesive into a baking oven to bake off the solvent in the adhesive;

4) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of the fabric coated with the adhesive through a die;

5) after the surface of the fabric coated with the adhesive is coated with the molten polyvinyl butyral, the fabric is bonded with the fabric sent from another sender, and then the fabric is pressed and bonded;

6) cooling and shaping;

7) and rolling to obtain the finished product.

7. A method for producing a polyvinyl butyral composite aluminum foil by using a casting mode and modifying a granulating material by using a polyvinyl butyral residual material is characterized by comprising the following steps of:

1) sending an aluminum foil;

2) coating an adhesive on the surface of the aluminum foil;

3) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of an aluminum foil through a die;

4) spraying molten polyvinyl butyral on the surface of the aluminum foil coated with the adhesive, and then embossing;

5) cooling and shaping the polyvinyl butyral layer coated on the surface of the aluminum foil;

6) and rolling to obtain the finished product.

8. A method for producing sandwich artificial leather by utilizing polyvinyl butyral excess material to modify granules and using a tape casting mode is characterized by comprising the following steps:

1) sending the mesh cloth;

2) coating the adhesive on the surface of the fabric;

3) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on one surface of the mesh cloth through a die;

4) the polyvinyl butyral is coated with the mesh cloth and then embossed;

5) cooling and shaping the polyvinyl butyral sprayed on the surface of the mesh cloth to form a single-sided mesh cloth film;

6) rolling the single-sided mesh fabric film;

7) and a sending cloth: after the single-sided mesh cloth film is arranged on the transmitter, the transmitter starts to transmit;

8) coating the adhesive on the other side of the single-sided mesh fabric film;

9) baking, namely feeding the single-side mesh film coated with the adhesive into a baking oven to bake off the solvent in the adhesive;

10) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the other surface of the single-sided mesh film through a die;

11) laminating polyvinyl butyral and a single-sided mesh film, and embossing;

12) cooling and shaping the polyvinyl butyral sprayed on the other surface of the single-sided mesh film to prepare the sandwich artificial leather;

13) and rolling to obtain the finished product.

Firstly, laminating film and cloth, which comprises the following steps:

1) sending the fabric;

2) coating the adhesive on the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into a baking oven to bake off the solvent in the adhesive;

4) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of the fabric coated with the adhesive through a die;

5) pouring the molten polyvinyl butyral onto the surface of the fabric coated with the adhesive;

6) cooling and shaping the polyvinyl butyral sprayed on the surface of the fabric;

7) and rolling the semi-finished product;

and secondly, sending the semi-finished product to a foaming furnace for foaming and embossing to form the foamed artificial leather, wherein the foaming furnace comprises the following steps:

1) sending the semi-finished product;

2) baking;

3) embossing;

4) cooling to obtain a finished product;

5) and rolling the finished product.

10. The method for producing the product by using the polyvinyl butyral remnant to modify the granulated substance and using the tape casting method as claimed in any one of claims 5 to 9, wherein the adhesive is formed by mixing glue and a cross-linking agent; the glue is one or the combination of two or more of polyurethane glue, acrylic acid glue and polychloroprene glue.

11. The method for producing the product by using the polyvinyl butyral remnant to modify the granulated substance and using the casting method as claimed in claim 10, wherein the weight ratio of the glue to the cross-linking agent is 90-110: 2-8.

12. A method for producing a foamed film by modifying a granulated substance with a polyvinyl butyral excess material and using a tape casting method is characterized by comprising the following steps:

firstly, producing a single-glue film, which comprises the following steps:

1) molten polyvinyl butyral particles: mixing polyvinyl butyral particles and AC foaming agent particles according to the weight ratio of 100: 5-7, adding the mixture into a feeding hopper of a casting machine, melting polyvinyl butyral (PVB) particles, and spraying the melted PVB particles between an embossing wheel and a rubber wheel through a die;

2) cooling and shaping to obtain a semi-finished product, namely a polyvinyl butyral film;

3) and rolling the semi-finished product;

and secondly, sending the semi-finished product to a foaming furnace for foaming and embossing to form a foamed film, wherein the method comprises the following steps:

1) sending the semi-finished product to a foaming furnace for foaming;

2) baking;

3) embossing;

4) cooling to obtain the finished product, namely the foaming film;

5) and rolling the finished product.

13. A method for producing a polyvinyl butyral film by utilizing a polyvinyl butyral residual material to modify a granulated substance and using a tape casting mode is characterized by comprising the following steps:

1) molten polyvinyl butyral particles: on a casting machine, after the polyvinyl butyral particles are melted, the polyvinyl butyral particles are coated between an embossing wheel and a rubber wheel through a die;

2) embossing the polyvinyl butyral film;

3) cooling and shaping;

4) and rolling to obtain the finished product.

Technical Field

The present invention belongs to a modified granulated substance of polyvinyl butyral (PVB) remainder, and a method for producing various products by using said granule and adopting casting mode.

Background

It is known to produce safety glass, windshields or flat glass of all types by combining the glass with thermoplastic polyvinyl butyral (PVB). In addition, polyvinyl butyral (PVB) films are also used in some applications. In the actual production of these glasses and in the lamination of polyvinyl butyral (PVB), a surplus of polyvinyl butyral (PVB) is often produced. In this case, if the polyvinyl butyral (PVB) waste is directly discarded, not only a certain environmental impact is caused, but also the polyvinyl butyral (PVB)) material is wasted.

Therefore, the applicant specially modifies the PVB (polyvinyl butyral) residual material to produce PVB particles which can be applied to the production of products such as spraying textile fabrics, double-faced fabrics, spraying aluminum foils, net-sandwiched artificial leather, foamed artificial leather and the like in a casting mode.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a granulating substance formed by modifying polyvinyl butyral residual materials, which is beneficial to environmental protection by utilizing the residual materials.

It is another object of the present invention to provide a process for making polyvinyl butyral (PVB) residue modified granules.

It is another object of the present invention to provide a method for producing various products such as textiles, double-sided fabrics, coated aluminum foils, laminated artificial leathers and foamed artificial leathers by using a polyvinyl butyral (PVB) modified granulate by tape casting.

In order to solve the technical problems, the invention adopts the following technical scheme:

a modified granulating material of polyvinyl butyral remainder comprises polyvinyl butyral remainder, calcium carbonate, an anti-hydrolysis agent, a plasticizer, a cold-resistant agent, a coloring agent, an antioxidant, zinc stearate, calcium stearate, an anti-ultraviolet agent and a high polymer material, and is prepared by modifying the polyvinyl butyral remainder and then refining the modified polyvinyl butyral remainder through a colloidal particle device at high temperature.

In an improved scheme of the modified granules of the polyvinyl butyral residual material, the weight ratio of the polyvinyl butyral residual material, calcium carbonate, an anti-hydrolysis agent, a plasticizer, a cold-resistant agent, a coloring agent, an antioxidant, zinc stearate, calcium stearate, an anti-ultraviolet agent and a high polymer material is 100: 5-150: 0.5-2: 3-50: 2-8: 1-30: 1-2: 2-3.6: 0.2-1.2: 0.3-1: 0.002-0.007.

In an improvement of the modified granulated substance of the residual polyvinyl butyral, the method comprises the following steps:

firstly, the raw materials are added into an internal mixer according to the weight ratio and mixed for 5 to 30 minutes to carry out primary plasticization, and the internal mixing temperature is 110-;

then, conveying the material into a first granulator, and carrying out secondary plasticization through heating, pressurizing and filtering when the material passes through a screw;

then, conveying the material into a second granulator, and plasticizing for three times by heating, pressurizing and filtering when passing through a screw;

finally, the polyvinyl butyral is cut into polyvinyl butyral particles through a die.

In the improved scheme of the process for modifying the granulating material of the residual polyvinyl butyral, the temperature of the first granulator is 150-165 ℃; the heating temperature of the second granulator is 120-150 ℃; the polyvinyl butyral particles have a diameter of 2mm-8mm and a length of 3mm-8 mm.

A method for producing polyvinyl butyral drench-coated textile fabric by using polyvinyl butyral excess material modified granules and using a tape casting mode comprises the following steps:

1) sending the fabric;

2) pasting, and coating an adhesive on the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into an oven to bake off the solvent in the adhesive, wherein the temperature of the oven is 100-130 ℃;

4) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of the fabric coated with the adhesive through a die;

5) after the molten polyvinyl butyral is coated on the surface of the fabric with the adhesive, embossing treatment is carried out;

6) cooling and shaping the polyvinyl butyral sprayed on the surface of the fabric;

7) and rolling to obtain the finished product.

A method for modifying a granulating material by using a polyvinyl butyral residual material and sandwiching a polyvinyl butyral film between two fabrics by using a tape casting mode comprises the following steps:

1) respectively sending the fabrics by two sending machines;

2) applying an adhesive to the fabric delivered from one of the conveyors, the adhesive being applied to the surface of the fabric;

3) baking, namely, sending the cloth coated with the adhesive into a baking oven to bake off the solvent in the adhesive;

4) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of the fabric coated with the adhesive through a die;

5) after the surface of the fabric coated with the adhesive is coated with the molten polyvinyl butyral, the fabric is bonded with the fabric sent from another sender, and then the fabric is pressed and bonded;

6) cooling and shaping;

7) and rolling to obtain the finished product.

A method for producing a polyvinyl butyral composite aluminum foil by utilizing a polyvinyl butyral residual material modified granulating material and using a tape casting mode comprises the following steps:

1) sending an aluminum foil;

2) coating an adhesive on the surface of the aluminum foil;

3) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of an aluminum foil through a die;

4) spraying molten polyvinyl butyral on the surface of the aluminum foil coated with the adhesive, and then embossing;

5) cooling and shaping the polyvinyl butyral layer coated on the surface of the aluminum foil;

6) and rolling to obtain the finished product.

A method for producing sandwich artificial leather by utilizing polyvinyl butyral excess material to modify granules and using a casting mode comprises the following steps:

1) sending the mesh cloth;

2) coating the adhesive on the surface of the fabric;

3) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on one surface of the mesh cloth through a die;

4) the polyvinyl butyral is coated with the mesh cloth and then embossed;

5) cooling and shaping the polyvinyl butyral sprayed on the surface of the mesh cloth to form a single-sided mesh cloth film;

6) rolling the single-sided mesh fabric film;

7) and a sending cloth: after the single-sided mesh cloth film is arranged on the transmitter, the transmitter starts to transmit;

8) coating the adhesive on the other side of the single-sided mesh fabric film;

9) baking, namely feeding the single-side mesh film coated with the adhesive into a baking oven to bake off the solvent in the adhesive;

10) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the other surface of the single-sided mesh film through a die;

11) laminating polyvinyl butyral and a single-sided mesh film, and embossing;

12) cooling and shaping the polyvinyl butyral sprayed on the other surface of the single-sided mesh film to prepare the sandwich artificial leather;

13) and rolling to obtain the finished product.

A method for producing foaming artificial leather by modifying granules by polyvinyl butyral excess materials and using a tape casting mode comprises the following steps:

firstly, the film coating and cloth covering method comprises the following steps:

1) sending the fabric;

2) coating the adhesive on the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into a baking oven to bake off the solvent in the adhesive;

4) molten polyvinyl butyral particles: adding polyvinyl butyral particles into a feeding hopper of a casting machine, melting the polyvinyl butyral particles, and spraying the melted polyvinyl butyral particles on the surface of the fabric coated with the adhesive through a die;

5) pouring the molten polyvinyl butyral onto the surface of the fabric coated with the adhesive;

6) cooling and shaping the polyvinyl butyral sprayed on the surface of the fabric;

7) and rolling the semi-finished product;

and secondly, sending the semi-finished product to a foaming furnace for foaming and embossing to form the foamed artificial leather, wherein the foaming furnace comprises the following steps:

1) sending the semi-finished product;

2) baking;

3) embossing;

4) cooling to obtain a finished product;

5) and rolling the finished product.

In the improvement scheme of the method for producing the granules by modifying the residual polyvinyl butyral and using the tape casting mode, the adhesive is formed by mixing glue and a cross-linking agent; the glue is one or the combination of two or more of polyurethane glue, acrylic acid glue and polychloroprene glue.

In the improvement scheme of the method for producing the poly (vinyl butyral) by modifying the granules by using the excess polyvinyl butyral and using a casting method, the weight ratio of the glue to the cross-linking agent is 90-110: 2-8.

A method for producing a foamed film by modifying a granulated substance with a polyvinyl butyral excess material and using a tape casting method comprises the following steps:

firstly, producing a single-glue film, which comprises the following steps:

1) molten polyvinyl butyral particles: mixing polyvinyl butyral particles and AC foaming agent particles according to the weight ratio of 100: 5-7, adding the mixture into a feeding hopper of a casting machine, melting polyvinyl butyral (PVB) particles, and spraying the melted PVB particles between an embossing wheel and a rubber wheel through a die;

2) cooling and shaping to obtain a semi-finished product, namely a polyvinyl butyral film;

3) and rolling the semi-finished product;

and secondly, sending the semi-finished product to a foaming furnace for foaming and embossing to form a foamed film, wherein the method comprises the following steps:

1) sending the semi-finished product to a foaming furnace for foaming;

2) baking;

3) embossing;

4) cooling to obtain the finished product, namely the foaming film;

5) and rolling the finished product.

A method for producing a polyvinyl butyral film by utilizing a polyvinyl butyral residual material to modify a granulated substance and using a tape casting mode is characterized by comprising the following steps:

1) molten polyvinyl butyral particles: on a casting machine, after the polyvinyl butyral particles are melted, the polyvinyl butyral particles are coated between an embossing wheel and a rubber wheel through a die;

2) embossing the polyvinyl butyral film;

3) cooling and shaping;

4) and rolling to obtain the finished product.

Compared with the prior art, the invention has the beneficial effects that: 1) the method is characterized in that after the surplus materials generated in the process of producing glass and the process of producing the polyvinyl butyral (PVB) interlayer film are fully utilized, polyvinyl butyral (PVB) particles are prepared by a modification granulation process, and then the polyvinyl butyral (PVB) particles are used for producing various products in a flow casting mode, so that the purposes of surplus material utilization and environmental protection are achieved; 2) compared with the currently adopted calender production mode, the production method of the invention for producing the products such as the coated textile, the double-sided fabric, the coated aluminum foil, the sandwich artificial leather, the foamed artificial leather and the like has lower labor cost and energy consumption cost, and simultaneously reduces the floor area of a factory building and air pollution.

The invention is described in further detail below with reference to the following figures and detailed description:

[ description of the drawings ]

FIG. 1 is a schematic view of a pelletizing line of the present invention;

FIG. 2 is a schematic view of a production line for casting a single-side-coated textile from the granulates according to the invention;

FIG. 3 is a schematic view of a production line for casting a double-sided fabric from the granulate of the invention;

FIG. 4 is a schematic view of a production line of the granulated substance of the present invention in casting production of a coated aluminum foil;

FIG. 5 is a schematic view of a production line for foam embossing of the present invention;

FIG. 6 is a schematic view of a casting machine according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a product produced by single-side coating of polyvinyl butyral (PVB) onto a fabric;

FIG. 8 is a schematic cross-sectional view of the product produced by double-sided lamination of polyvinyl butyral (PVB) onto fabric;

FIG. 9 is a schematic cross-sectional view after applying polyvinyl butyral (PVB) between the two-sided fabrics;

FIG. 10 is a comparison table of manpower and cost for producing products such as coated textiles, double-sided fabrics, coated aluminum foils, laminated artificial leathers and foamed artificial leathers by calendering process and casting process according to the present invention at the present stage.

[ detailed description ] embodiments

The polyvinyl butyral (PVB) residue modified granulating material comprises polyvinyl butyral (PVB) residue, calcium carbonate, an anti-hydrolysis agent, a plasticizer, a cold-resistant agent, a coloring agent, an antioxidant, zinc stearate, calcium stearate, an anti-ultraviolet agent and a high polymer material, wherein the polyvinyl butyral (PVB) residue is modified and then refined at high temperature through colloidal particle equipment to form the granular material, and the modified granular material has better water resistance and anti-adhesion performance.

In this embodiment, the plasticizer is triethylene glycol diisocaprylate, and the cold-resistant agent is dioctyl adipate.

Example 1 of modified granulation: when PVB excess material is modified, 100 kg of excess material is used as a reference to add or subtract additives, 0.5 kg of anti-hydrolysis agent is added to enable the material to have a hydrolysis resistance effect, 3 kg of triethylene glycol diisocaprylate is weighed to soften a product, and 2 kg of dioctyl adipate is weighed to serve as a cold-resistant agent to play a cold-resistant role; the addition amount of the antioxidant is 2 kg; the zinc stearate and the calcium stearate are lubricants of materials, and the addition amount of the zinc stearate and the calcium stearate is 3.6 kilograms and 1.2 kilograms respectively; the addition amount of the ultraviolet resistant agent is 0.65 kg, so that the weather resistance of the product is enhanced; the high molecular material has the function of wear resistance, and the addition amount is 0.005 kg; the addition amount of the colorant is 16 kg, and the addition amount of the calcium carbonate is 100 kg.

Example 2 of modified granulation: when PVB excess material is modified, 100 kg of excess material is used as a reference to add or subtract additives, 2 kg of hydrolysis resistance agent is added to enable the material to have hydrolysis resistance, 50 kg of triethylene glycol diisocaprylate is selected as a plasticizer to soften a product, and 8 kg of dioctyl adipate is selected as a cold resistance agent to play a cold resistance role; the addition amount of the antioxidant is 1 kg; the zinc stearate and the calcium stearate are lubricants of materials, and the addition amount of the zinc stearate and the calcium stearate is 2 kilograms and 0.2 kilogram respectively; the addition amount of the ultraviolet resistant agent is 0.3 kg, so that the weather resistance of the product is enhanced; the high polymer material has the function of wear resistance, and the addition amount is 0.002 kg; the addition amount of the colorant is 1 kg, and the addition amount of the calcium carbonate is 6 kg.

Example 3 of modified granulation: when PVB excess material is modified, 100 kg of excess material is used as a reference to add or subtract additives, 1.3 kg of hydrolysis resistant agent is added to enable the material to have hydrolysis resistance, 26.5 kg of triethylene glycol diisocaprylate is selected as a plasticizer to soften the product, and 5 kg of dioctyl adipate is selected as a cold resistant agent to play a cold resistant role; the addition amount of the antioxidant is 1.5 kg; the zinc stearate and the calcium stearate are lubricants of materials, and the addition amount of the zinc stearate and the calcium stearate is respectively 2.8 kg and 0.7 kg; the addition amount of the ultraviolet resistant agent is 1 kg, so that the weather resistance of the product is enhanced; the high polymer material has the function of wear resistance, and the addition amount is 0.007 kg; the addition amount of the colorant is 30 kg, and the addition amount of the calcium carbonate is 150 kg.

A process for modifying a granulation mass with polyvinyl butyral (PVB) residue, as shown in fig. 1, which is a schematic diagram of a granulation line, comprising the steps of:

firstly, the raw materials are put into an internal mixer 1 according to the weight ratio (single ingredients) and are mixed for 20 minutes to carry out primary plasticization, and the mixing temperature is 120 ℃ to achieve the modification function;

then, the material is conveyed into a first granulator 2, and after passing through a screw (1-3 minutes), the material is plasticized for the second time by heating (granulation host machine 1-4 area (1-4 area): 150-,

then, the material is conveyed into a second granulator 3, and is plasticized for three times by heating (1-4 area of a granulator 1-4 area: 120-;

and finally, cutting the mixture into polyvinyl butyral (PVB) particles through a die, wherein the particle size is 5mm in diameter and 6mm in length, so that the polyvinyl butyral (PVB) particles after third plasticizing are uniform and meet the standard of the produced product.

Internal mixers and granulators have been widely used in various other fields, and their structures will not be described in detail here.

Polyvinyl butyral (PVB) particles produced by the method are used for producing products such as coated textiles, double-faced fabrics, coated aluminum foils, net-clamping artificial leather and foaming artificial leather in a tape casting mode, and the products can be used as outdoor products and other daily necessities, such as dust covers, tents, raincoats, bags, handbags, household goods, sports goods, lamp house cloth, advertisement cloth, ground mats, glass sandwich films and similar articles. The specific production method is as follows

Firstly, when a polyvinyl butyral residual material is used for modifying a granulating material and a PVB (polyvinyl butyral) drench textile is produced by a casting method, the method comprises the following steps (fig. 2 shows a schematic production line for producing the drench textile by the casting method, and the reference numbers ① to ⑦ correspond to equipment used in the steps):

1) a fabric, which may be a woven or non-woven fabric;

2) pasting (i.e. applying adhesive), coating the adhesive on the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into an oven to bake off the solvent in the adhesive, wherein the temperature of the oven is 100-130 ℃;

4) molten polyvinyl butyral (PVB) particles: adding polyvinyl butyral (PVB) particles into a feeding hopper of a casting machine (shown in figure 6), melting the polyvinyl butyral (PVB) particles, and spraying the melted polyvinyl butyral (PVB) particles on the surface of the fabric coated with the adhesive through a mold; temperature setting of casting machine: the screw reached 135 to 165 ℃ in zone 11. The die is 155 to 175 ℃ in a 11 area (dies with different widths are used according to product requirements and have 8-30 areas);

5) after molten polyvinyl butyral (PVB) is coated on the surface of the fabric coated with the adhesive, embossing treatment is carried out;

6) cooling and shaping polyvinyl butyral (PVB) coated on the surface of the fabric; FIG. 7 is a schematic cross-sectional view of a polyvinyl butyral (PVB) laminated textile, where A is the fabric and B is the PVB layer;

7) and rolling to obtain the finished product.

The above steps are performed by spraying molten polyvinyl butyral (PVB) onto one side of the fabric, and the cross-section of the product is schematically shown in fig. 7. When a layer of polyvinyl butyral (PVB) is to be coated on the other side, the above steps are repeated for the other side of the fabric, as shown in fig. 8, a schematic cross-sectional view of coating polyvinyl butyral (PVB) films on both sides of the fabric, where a is the fabric and B is the PVB layer.

Further, when two or even more layers of PVB are to be laminated on the same side of the fabric, the same operations are repeated on the same side of the fabric.

When a polyvinyl butyral remnant is used to modify a granulated substance and a PVB film is sandwiched between two fabrics by casting, as shown in fig. 3, two conveyors (reference numerals ① and ⑨) are required to respectively convey the respective fabrics, and pasting and baking are required to be performed on the surface of one of the fabrics, and for this purpose, the method comprises the following steps:

1) delivering the fabric on two delivery machines (① and ⑨), wherein the fabric can be woven fabric or non-woven fabric;

2) pasting (i.e., applying an adhesive) on the fabric delivered from one of the conveyors (here, station ①), and applying the adhesive to the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into an oven to bake off the solvent in the adhesive, wherein the temperature of the oven is 100-130 ℃;

4) molten polyvinyl butyral (PVB) particles: adding polyvinyl butyral (PVB) particles into a feeding hopper of a casting machine (shown in figure 6), melting the polyvinyl butyral (PVB) particles, and spraying the melted polyvinyl butyral (PVB) particles on the surface of the fabric coated with the adhesive through a mold; temperature setting of casting machine: the screw reached 135 to 165 ℃ in zone 11. The die is 155 to 175 ℃ in a 11 area (dies with different widths are used according to product requirements and have 8-30 areas);

5) after the adhesive-coated fabric surface is coated with molten polyvinyl butyral (PVB), the adhesive-coated fabric surface is bonded to a fabric sent from another sending machine (here, a machine ⑨), and then pressure bonding is performed;

6) cooling and shaping; FIG. 9 is a schematic cross-sectional view of a polyvinyl butyral (PVB) laminated textile, where A is the fabric and B is the PVB layer;

7) and rolling to obtain the finished product.

Thirdly, when the poly (vinyl butyral) residue is used for modifying the granulation matter and a tape casting method is used for producing the poly (vinyl butyral) (PVB) composite aluminum foil, fig. 4 is a schematic production line diagram and includes the following steps:

1) sending aluminum foil from a sending station ⑨ using equipment such as that shown in FIG. 4 at reference numeral ⑨;

2) pasting (i.e., applying adhesive), and coating the adhesive on the surface of the aluminum foil, as shown by reference numeral ⑧ in fig. 4;

3) melting polyvinyl butyral (PVB) particles, namely adding the PVB particles into a feeding hopper of a casting machine (shown in figure 6), melting the PVB particles, and spraying the melted PVB particles on the surface of an aluminum foil through a mold, wherein the temperature is set to be 135-165 ℃ in a screw rod zone 11, 155-175 ℃ in a mold zone 11 (the mold with different widths is used according to product requirements and has 8-30 zones), and equipment used in the step is shown as reference numeral ④ in figure 4;

4) embossing after pouring molten polyvinyl butyral (PVB) on the surface of the aluminum foil coated with the adhesive, the equipment used for this step is shown in fig. 4 by reference numeral ⑤;

5) cooling and sizing the polyvinyl butyral (PVB) layer coated on the surface of the aluminum foil, wherein the equipment used in the step is shown as reference numeral ⑥ in FIG. 4;

6) the equipment used for this step is shown in figure 4 at reference ⑦.

The same procedure is also performed when polyvinyl butyral (PVB) is to be applied to the other side of the aluminum foil. The same applies when two or more layers of polyvinyl butyral (PVB) film are to be applied to the same side of the aluminum foil.

Fourthly, when the poly vinyl butyral excess material is used for modifying the granules and the curtain coating mode is used for coating the sandwich artificial leather, the production line is shown as a schematic diagram in fig. 3, and the production line comprises the following steps:

1) the mesh fabric is sent, the equipment used in this step is shown as reference ⑨ in fig. 3;

2) pasting (i.e., applying an adhesive), applying the adhesive to the surface of the fabric using equipment such as that shown in figure 3 at reference numeral ⑧;

3) melting polyvinyl butyral (PVB) particles, namely adding the PVB particles into a feeding hopper of a casting machine (shown in figure 6), melting the PVB particles, and then coating the molten PVB particles on one surface of the mesh cloth through a mold, wherein the temperature of the casting machine is set to be 135-165 ℃ in a screw rod zone 11 and 155-175 ℃ in a mold zone 11 (the mold has 8-30 zones which are different in width according to product requirements), and equipment used in the step is shown as reference numeral ④ in figure 3;

4) polyvinyl butyral (PVB) is then applied to the web and embossed, using equipment such as that shown in figure 3 at reference ⑤;

5) cooling and sizing polyvinyl butyral (PVB) coated on the surface of the mesh cloth to form a semi-finished product, namely a single-sided mesh film, wherein equipment used in the step is shown as reference numeral ⑥ in fig. 3;

6) the semi-finished product of the roll is a single-sided mesh cloth film, and the equipment used in the step is shown as reference number ⑦ in FIG. 3;

7) a sending cloth, wherein the single-sided mesh cloth film is arranged on the sender, and then the sending is started by the sender, and the equipment used in the step is shown as reference numeral ① in figure 3;

8) pasting (i.e., adhesive), coating the adhesive on the other side of the single-sided web film (i.e., the side not coated with polyvinyl butyral (PVB)), using equipment such as that shown in figure 3 at reference numeral ②;

9) baking, namely feeding the single-sided mesh cloth film coated with the adhesive into an oven to bake off the solvent in the adhesive, wherein the temperature of the oven is 100-130 ℃, and the equipment used in the step is shown as reference number ③ in fig. 3;

10) melting polyvinyl butyral (PVB) particles, namely adding the PVB particles into a feeding hopper of a casting machine, and spraying the PVB particles on the other surface of the single-sided mesh fabric film through a mold after the PVB particles are melted, wherein the temperature of the casting machine is set to be 135-165 ℃ in a screw zone at 11 regions and 155-175 ℃ in 11 regions (the mold with 8-30 regions is used according to the requirements of products) by using equipment as shown by reference numeral ④ in figure 3;

11) laminating polyvinyl butyral (PVB) with a single-sided mesh cloth film, and embossing, wherein the equipment used in the step is shown as reference numeral ⑤ in FIG. 3;

12) cooling and shaping polyvinyl butyral (PVB) coated on the other side of the single-sided mesh fabric film, wherein the equipment used in the step is shown as reference numeral ⑥ in figure 3, so as to form a finished product, namely the sandwich artificial leather, and the cross section schematic diagram of the sandwich artificial leather shown in figure 8 is shown, wherein A is mesh fabric and B is a PVB layer.

13) The finished product is rolled up, and the equipment used in this step is shown as reference ⑦ in fig. 3.

When two or more layers of film are to be applied to each side of the web, the above steps are repeated until the finished product is completed.

Fifthly, when the poly vinyl butyral excess material is used for modifying the granules and the casting mode is used for producing the foaming artificial leather, the steps need to be completed on two workshops (or production lines):

the production line of laminating and cloth coating is shown in figure 3 and comprises the following steps:

1) a fabric, which may be a woven or non-woven fabric;

2) pasting (i.e. applying adhesive), coating the adhesive on the surface of the fabric;

3) baking, namely feeding the cloth coated with the adhesive into an oven to bake off the solvent in the adhesive, wherein the temperature of the oven is 100-130 ℃;

4) molten polyvinyl butyral (PVB) particles: mixing polyvinyl butyral (PVB) particles and AC foaming agent particles according to the weight ratio of 100: 5-7, adding the mixture into a feeding hopper of a casting machine, melting polyvinyl butyral (PVB) particles, and spraying the melted PVB particles on the surface of the fabric coated with the adhesive through a die; temperature setting of casting machine: the screw reached 135 to 165 ℃ in zone 11. The die is 155 to 175 ℃ in a 11 area (dies with different widths are used according to product requirements and have 8-30 areas);

5) spraying molten polyvinyl butyral (PVB) onto the surface of the adhesive coated fabric;

6) cooling and shaping polyvinyl butyral (PVB) sprayed on the surface of the fabric; FIG. 7 is a schematic cross-sectional view of a polyvinyl butyral (PVB) laminated textile, where A is the fabric and B is the PVB layer;

7) and rolling the semi-finished product;

when two or more layers of spraying are needed to be carried out on each surface of the fabric, the steps are repeated;

and secondly, sending the semi-finished product to a foaming furnace for foaming and embossing to form the foamed artificial leather, wherein the foaming temperature is 190-:

1) sending the semi-finished product, as shown at ⑩ of FIG. 5;

2) bake, oven (shown as ⑪ in fig. 5) zone 5 at 160 to 250 degrees celsius;

3) embossing, as shown at ⑫ in fig. 5;

4) cooling, and making into final product, as shown in ⑬ of FIG. 5;

5) and rolling the finished product, as shown in ⑭ of fig. 5.

It can be seen that the production of the products such as the spray coating textile, the double-sided textile, the spray coating aluminum foil, the spray coating sandwich artificial leather, the foaming artificial leather and the like by adopting the curtain coating mode has the following advantages compared with the currently adopted production mode of the calender:

FIG. 10 is a comparison table of labor, cost, etc. for producing the above products (coated textiles, double-sided fabrics, coated aluminum foil, laminated artificial leather, foamed artificial leather, films, etc.) by casting and calendering at the present stage according to the present invention. It can be seen that when the casting machine is used for production, the pasting, casting, pouring, forming and roll dividing are all produced in an integrated device, but it is known that when the rolling production is used, the production process needs to be carried out in a segmented mode, namely two auxiliary devices, namely a pasting machine and a laminating machine, are needed for production (for example, on a fabric or an aluminum foil, so that the casting mode can be used for reducing labor cost and energy consumption cost, and simultaneously reducing the occupied area of a factory building and air pollution.

The adhesive can be one or the combination of two or more of polyurethane glue, acrylic acid glue and polychloroprene glue and then is mixed with a cross-linking agent, wherein the weight ratio of the glue to the cross-linking agent is 90-110: 2-8.

Besides the production of the products by adopting a casting mode, a casting machine can be directly used for producing a polyvinyl butyral (PVB) film or a foaming film, so that people can use the residual polyvinyl butyral (PVB) to prepare the film again and then apply the film to furniture products and daily necessities such as raincoats, dust covers and the like.

Sixthly, modifying the granules by utilizing the residual polyvinyl butyral and using a casting mode to produce the foamed film, the process needs to be completed on two workshops (or production lines):

the production line for producing the single-glue film is shown in figure 3 and comprises the following steps:

1) melting polyvinyl butyral (PVB) particles, namely mixing the polyvinyl butyral (PVB) particles and AC foaming agent particles according to the weight ratio of 100: 5-7, adding the mixture into a feeding hopper of a casting machine, melting the polyvinyl butyral (PVB) particles, and then coating the melted polyvinyl butyral (PVB) particles between an embossing wheel and a rubber wheel through a mold as shown in ④ and ⑤ of figure 3, wherein the temperature of the casting machine is set in a way that a screw rod reaches 135-165 ℃ in an 11 area, and the mold reaches 155-175 ℃ in the 11 area (the mold with different widths and 8-30 areas is used according to product requirements);

2) cooling and shaping to obtain a polyvinyl butyral (PVB) film as shown in ⑥ of figure 3;

3) and roll-separating the semi-finished product-single glue film, as shown in ⑦ of FIG. 3;

and secondly, sending the semi-finished product to a foaming furnace for foaming and embossing to form a foamed film, wherein the foaming temperature (190-:

1) sending the semi-finished product, as shown at ⑩ of FIG. 5;

2) bake, oven (shown as ⑪ in fig. 5) zone 5 at 160 to 250 degrees celsius;

3) embossing, as shown at ⑫ in fig. 5;

4) cooling to obtain the finished product, namely the foaming film, as shown in ⑬ of figure 5;

5) and rolling the finished product, as shown in ⑭ of fig. 5.

Modifying the granules by using the polyvinyl butyral leftover material and producing the PVB film by using a casting mode comprises the following steps (the used equipment is ④ - ⑦ shown in figure 2):

1) molten polyvinyl butyral (PVB) particles: on a casting machine, after polyvinyl butyral (PVB) particles are melted, the molten PVB particles are sprayed between an embossing wheel and a rubber wheel through a die, and the temperature is set as follows: the screw reaches 135 to 165 ℃ in the 11 zone; the temperature of the die is 155-175 ℃ in zone 11 (dies with different widths are used according to product requirements and have zones 8-30);

2) embossing a polyvinyl butyral (PVB) film;

3) cooling and shaping;

4) and rolling to obtain the final product polyvinyl butyral film.

In summary, the embodiments of the present invention are merely exemplary and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made according to the content of the claims of the present invention should fall within the technical scope of the present invention.