PVC (polyvinyl chloride) film and environment-friendly netted sandwich cloth
By adopting the preparation method of PVC film and the production process of environmentally friendly mesh cloth, the existing mesh cloth production process is solved, and the stable physical performance and simplified production process that meets domestic and foreign environmental protection requirements are achieved, reducing production costs and shortening production time.
Patent Information
- Application Number
- CN202510220065.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-05-23
AI Technical Summary
The existing mesh fabric has complex production process, high production costs and high working hours, which cannot meet domestic and foreign environmental protection requirements.
The preparation method of PVC film is adopted, including weighing the raw materials of each component according to the mass part, mixing and stirring through a high-speed mixer, extruding and machining, further plasticizing, filtration and calendering, and combining with the production process of environmentally friendly mesh cloth, the front and back sides of the mesh cloth body are bonded to the PVC film at high temperature.
On the premise of meeting domestic and foreign environmental protection requirements, the physical properties of the clamped mesh fabric are more stable, the weight and thickness are easier to control, the production process is simplified, which reduces production costs and shortens production time and increases production output.
Smart Images
Figure CN120025641A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of mesh cloth production, and in particular to a PVC film and an environmentally friendly mesh cloth. Background Art
[0002] With the continuous improvement of living standards, mesh fabrics are increasingly used in life, such as children's inflatable castles, shopping mall decorative balloons, water parks, etc.; people's demand for these products is gradually increasing, and at the same time, the environmental protection requirements for products are also increasing. The United States and Europe stipulate zero phthalate content. However, the air film on the market is mainly made of DOTP plasticizer (dioctyl terephthalate), which cannot meet foreign environmental protection requirements: 1. DINP plasticizer is widely used in the market, and DINP film is laminated on both sides or one side to obtain composite 3P environmentally friendly products; 2. When using DOTP plasticizer, the finished product will have precipitation phenomenon, and it may be impossible to weld or bubble imaging during high-frequency or high-temperature welding; 3. After using DOTP plasticizer, the machine cannot be dried, resulting in sticky materials on many rubber wheels of the machine; 4. Compared with DINP plasticizer, DOTP requires more glue and the stripping effect will be lower when using DOTP plasticizer; Through the above process, it can be found that the current production process is complicated, consumes a lot of man-hours, uses a lot of raw materials and has high costs. Summary of the invention
[0003] In view of the defects existing in the prior art, the purpose of the present invention is to provide a PVC film and an environmentally friendly mesh cloth to solve the problems of complex production process, high production cost and long working hours of the existing mesh cloth.
[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: In the first aspect, the present application provides a PVC film, the mass parts of which are: 100 parts of PVC powder, 41 parts of DPHP (di(2-propylheptyl)phthalate) plasticizer, 10 parts of cold-proof plasticizer, 10 parts of 1500 mesh heavy calcium, 0.15-0.2 parts of antioxidant, 0.5 parts of ultraviolet light receiving agent, and 4.5 parts of colorant; the preparation method of the PVC film comprises the following steps: a. After weighing the raw materials of each component by mass, PVC powder, plasticizer, cold-proof plasticizer, heavy calcium, antioxidant, ultraviolet light receiver and colorant are mixed and stirred at 115° C. in a high-speed mixer to obtain a mixed material; b. Extruding the mixture to cook the mixture; c. further plasticizing the above-mentioned mixed material in a cooked state; d. Filter the mixed material after plasticization; e. Calendering the filtered mixture to obtain a PVC film.
[0005] Furthermore, the PVC powder is polyvinyl chloride resin powder of model S70.
[0006] Furthermore, in the above step b, the mixed material is extruded by a 10,000 horsepower machine.
[0007] In a second aspect, the present application further provides an environmentally friendly mesh cloth, comprising the PVC film as described above, wherein the environmentally friendly mesh cloth further comprises a mesh cloth body, and the front and back sides of the mesh cloth body are respectively coated with the PVC film through an adhesive layer.
[0008] Furthermore, the mass fraction of the adhesive layer is as follows: 100 parts of PVC paste resin, 85 parts of plasticizer, 3 parts of stabilizer, 20 parts of adhesive, 6 parts of diluent, and 10 parts of calcium powder.
[0009] Furthermore, the plasticizer is DPHP plasticizer.
[0010] Furthermore, the preparation method of the environmentally friendly mesh cloth is: S1. Immerse the mesh body in adhesive glue, and put the glued mesh body into an oven for preliminary drying; S2. The front and back sides of the dried adhesive mesh body are laminated with the PVC film at high temperature; S3. After the lamination is completed, it enters the embossing wheel group for embossing, and after cooling, it is cut into products that meet the requirements.
[0011] Furthermore, the temperature at which the front and back sides of the mesh body are respectively attached to the PVC film is 170°C.
[0012] Furthermore, in step S1, the mesh body after gluing needs to be scraped flat before entering the oven.
[0013] Furthermore, in step S3, the mesh body after lamination passes through a heat-conducting wheel and then enters an embossing wheel assembly for embossing.
[0014] The beneficial effects of the present invention are: By adopting the above-mentioned PVC film, adhesive production formula and mesh cloth production process, the produced mesh cloth not only meets domestic and international environmental protection requirements but also has more stable physical properties. The weight and thickness of the mesh cloth are easier to control and adjust than before. In addition, the production process is simpler, which reduces production costs and shortens production time, and increases production output. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the PVC film preparation process in the embodiment of the present application.
[0016] Figure 2 Schematic diagram of the process flow of preparing the mesh cloth in the embodiment of the present application. DETAILED DESCRIPTION
[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0018] See attached Figure 1 As shown, this embodiment provides a PVC film, whose mass parts are as follows: 100 parts of PVC powder, 41 parts of DPHP (di(2-propylheptyl)phthalate) plasticizer, 10 parts of cold-proof plasticizer, 10 parts of 1500 mesh heavy calcium, 0.15-0.2 parts of antioxidant, 0.5 parts of ultraviolet receiver, and 4.5 parts of colorant, wherein the PVC powder is preferably polyvinyl chloride resin powder of model S70.
[0019] In this embodiment, the method for preparing the PVC film comprises the following steps: a. After weighing the raw materials of each component by mass, PVC powder, plasticizer, cold-proof plasticizer, heavy calcium, antioxidant, ultraviolet light receiver and colorant are mixed and stirred at 115° C. in a high-speed mixer to obtain a mixed material; b. Extruding the mixture to cook the mixture; In some embodiments, the mixed material is extruded by a 10,000 horsepower press.
[0020] c. further plasticizing the above-mentioned mixed material in a cooked state; d. Filter the mixed material after plasticization; e. Calendering the filtered mixture to obtain a PVC film.
[0021] At the same time, this embodiment also provides an environmentally friendly mesh cloth, which includes a mesh cloth body and the above-mentioned PVC film, and the front and back sides of the mesh cloth body are respectively coated with the PVC film through an adhesive layer.
[0022] The mass fraction of the adhesive layer is as follows: 100 parts of PVC paste resin, 85 parts of DPHP plasticizer, 3 parts of stabilizer, 20 parts of adhesive, 6 parts of diluent, and 10 parts of calcium powder.
[0023] In addition, the preparation method of the environmentally friendly mesh cloth comprises the following steps: S1. Immerse the mesh body in adhesive, squeeze the rubber wheel and the iron wheel against each other, and use two scrapers to scrape it flat, preheat it, and then put it into a blowing oven at about 180℃ for drying; S2. The front and back sides of the dried adhesive mesh body are laminated with the PVC film at a high temperature, and the laminating temperature is about 170°C; S3. After the lamination is completed, it enters the embossing wheel group through the heat transfer wheel. After passing through the embossing wheel, it is cooled and cut into finished products that meet the requirements.
[0024] In order to better illustrate the physical properties of the mesh cloth in this embodiment, the physical properties of the existing mesh cloth and the mesh cloth in this embodiment are compared and illustrated below:
[0025] Table 1 (Table 1 shows the physical properties of existing mesh fabrics)
[0026] Table 2 (Table 2 is the physical performance data of the mesh cloth in this embodiment)
[0027] The comparison of the data in the above table shows that by adopting the above-mentioned PVC film, adhesive production formula and mesh cloth production process, the produced mesh cloth not only meets domestic and international environmental protection requirements but also has more stable physical properties. The weight and thickness of the mesh cloth are easier to control and adjust than before.
[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A PVC film, characterized in that: The mass fraction is as follows: 100 parts of PVC powder, 41 parts of DPHP (di(2-propylheptyl)phthalate) plasticizer, 10 parts of cold-proof plasticizer, 10 parts of 1500-mesh heavy calcium, 0.15-0.2 parts of antioxidant, 0.5 parts of ultraviolet light receiving agent, and 4.5 parts of colorant. The preparation method of the PVC film comprises the following steps: a. After weighing the raw materials of each component by mass, PVC powder, plasticizer, cold-proof plasticizer, heavy calcium, antioxidant, ultraviolet light receiver and colorant are mixed and stirred at 115° C. in a high-speed mixer to obtain a mixed material; b. Extruding the mixture to cook the mixture; c. further plasticizing the above-mentioned mixed material in a cooked state; d. Filter the mixed material after plasticization; e. Calendering the filtered mixture to obtain a PVC film.
2. A PVC film according to claim 1, characterized in that: The PVC powder is polyvinyl chloride resin powder of model S70.
3. A PVC film according to claim 1, characterized in that: In the above step b, the mixed material is extruded by a 10,000 horsepower press.
4. An environmentally friendly mesh cloth, characterized in that: The environmentally friendly mesh cloth comprises the PVC film as described in any one of claims 1 to 3 above, and the mesh cloth also comprises a mesh body, and the front and back sides of the mesh body are respectively coated with the PVC film through an adhesive layer.
5. The environmentally friendly mesh cloth according to claim 4, characterized in that: The mass proportion of the adhesive layer is as follows: 100 parts of PVC paste resin, 85 parts of plasticizer, 3 parts of stabilizer, 20 parts of adhesive, 6 parts of diluent, and 10 parts of calcium powder.
6. The environmentally friendly mesh cloth according to claim 5, characterized in that: The plasticizer is DPHP plasticizer.
7. The environmentally friendly mesh cloth according to claim 5, characterized in that: The preparation method of the environmentally friendly mesh cloth is as follows: S1. Immerse the mesh body in adhesive glue, and put the glued mesh body into an oven for preliminary drying; S2. The front and back sides of the dried adhesive mesh body are laminated with the PVC film at high temperature; S3. After the lamination is completed, it enters the embossing wheel group for embossing, and after cooling, it is cut into products that meet the requirements.
8. The environmentally friendly mesh cloth according to claim 7, characterized in that: The temperature at which the front and back sides of the mesh body are respectively attached to the PVC film is 170°C.
9. The environmentally friendly mesh cloth according to claim 7, characterized in that: In step S1, the mesh body after gluing needs to be scraped flat before entering the oven.
10. The environmentally friendly mesh cloth according to claim 7, characterized in that: In step S3, the mesh body after lamination passes through a heat-conducting wheel and then enters an embossing wheel assembly for embossing.