Blooming-free and oil-separation-free PVC (Polyvinyl Chloride) netted sandwich cloth and preparation method thereof

Abstract

The invention belongs to the technical field of PVC (polyvinyl chloride) mesh cloth, and particularly relates to blooming-free and oil-separation-free PVC sandwich mesh cloth and a preparation method thereof. 25-30 parts of chlorinated paraffin; 15-20 parts of magnesium hydroxide; 18 to 20 parts of aluminum hydroxide; 8 to 10 parts of antimony trioxide; 4-5 parts of zinc borate; 1-2 parts of zinc sulfide; 0.5 part of stearic acid; 4 parts of a stabilizer; 0.8 to 2 parts of hyperchromic pigment; and 0.5-1 part of a plasticizer. Glue is manually smeared on the surface of PVC net clamping cloth, then the surfaces of the upper side and the lower side of the PVC net clamping cloth are covered with waterproof layers, one end of the PVC net clamping cloth penetrates through a second lap joint sleeve shell, the PVC net clamping cloth is in lap joint with the top surface of a flow guide roller, then a closed top cover is lowered through a hydraulic lifting rod, and then the PVC net clamping cloth is placed on the flow guide roller. And a downward pressing roller on the bottom surface of the swing plate is extruded and lapped at a sunken part between the two flow guide rollers, so that the flow guide rollers and the downward pressing roller are in a staggered butt joint state.

Description

Technical Field

[0001] The invention belongs to the technical field of PVC mesh cloth, in particular to a PVC mesh cloth without frosting or oil separation and a preparation method thereof. Background Art

[0002] PVC mesh cloth is a kind of plastic material with textile mesh cloth as the base material, and one or more layers of plastic materials with different properties are compounded on both sides of the mesh cloth. Generally speaking, PVC mesh cloth has excellent physical properties, great strength, and is waterproof, dustproof, and mildew-proof. It is mainly used in various fields such as car awnings, awnings, tents, temporary exhibition tents, inflatable membrane buildings, etc., and has a wide range of uses.

[0003] In the current prior art, after the existing PVC mesh cloth is woven, glue needs to be applied on the upper and lower surfaces of the PVC mesh cloth to bond the waterproof layer. However, manual glue application will result in uneven glue application, and bubbles will remain between the waterproof layer and the PVC mesh cloth when the waterproof layer is attached. In addition, some accumulated glue will produce raised hard rubber blocks after drying in the later stage, making the PVC mesh cloth not flat as a whole, and the overly thick hard rubber blocks cannot be effectively bent during winding and rolling.

[0004] To this end, the present invention provides a PVC mesh cloth without frosting or oil separation and a preparation method thereof. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the frost-free and oil-free PVC mesh cloth and the preparation method thereof of the present invention comprise the following components:

[0007] Polyvinyl chloride: 30-40;

[0008] Chlorinated paraffin: 25-30;

[0009] Magnesium hydroxide: 15-20;

[0010] Aluminum hydroxide: 18-20;

[0011] Antimony trioxide: 8-10;

[0012] Zinc borate: 4-5;

[0013] Zinc sulfide: 1-2;

[0014] Stearic acid: 0.5;

[0015] Stabilizer: 4;

[0016] Color enhancement pigment: 0.8~2;

[0017] Plasticizer: 0.5~1.

[0018] Preferably, the plasticizer includes 10-15 parts of phthalic acid diester, 3-8 parts of isophthalic acid diester, 1-5 parts of diisooctyl sebacate and 1-2 parts of alkyl phenyl sulfonate, the stabilizer includes 4.5-5 parts of sodium nitrate, 0.8-2 parts of sodium carbonate, and 1-2 parts of polystyrene, and the chlorinated paraffin has low volatility, flame retardancy, good electrical insulation, etc.

[0019] The method for preparing a PVC mesh cloth without frosting or oil separation preferably comprises the following steps:

[0020] S1, raw material mixing process;

[0021] s1. Mix and stir PVC mesh cloth raw materials in various proportions;

[0022] s2, extruding the mixed PVC raw materials into strip materials through an extrusion mixing device, and then weaving them through a weaving device;

[0023] s3. The woven PVC mesh cloth is placed into the extrusion device to be rolled and compacted;

[0024] s4. After adding the auxiliary materials, the PVC mesh cloth is quickly formed through the drying device;

[0025] S2, PVC raw materials are extruded and woven with auxiliary materials:

[0026] S3, superimposing a protective layer on the surface of the PVC mesh cloth and rolling and compacting it;

[0027] S4. Drying and extruding the PVC mesh cloth.

[0028] Preferably, the raw materials in s1 include:

[0029] The mixed raw materials of PVC mesh cloth include: polyvinyl chloride, chlorinated paraffin, magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc borate, zinc sulfide, stearic acid, stabilizer, color pigment, plasticizer;

[0030] The raw materials for weaving PVC mesh cloth include: flow-like PVC slurry, PVC thread, polyester thread, high-strength polyester or nylon.

[0031] Preferably, the S2 further comprises the following steps:

[0032] b1, extruding the mixed PVC raw materials into strip materials through an extrusion mixing device, and then weaving them through a weaving device;

[0033] b2. When weaving the PVC mesh cloth, PVC thread and polyester thread are added inside the PVC mesh cloth to interweave them. High-strength polyester or nylon is used as the base fabric to replace the PVC thread and polyester thread.

[0034] b3. After weaving, the PVC mesh cloth is coated with flow-like PVC slurry, plasticizer, stabilizer and filler on both sides of the material.

[0035] Preferably, the extrusion mixing device in S1 comprises an overlapping sleeve one and a closed top cover movably sleeved on the top outer surface of the overlapping sleeve one, guide rollers are arranged on the inner wall surfaces on both sides of the overlapping sleeve one, overlapping sleeve two are arranged on the two side surfaces of the overlapping sleeve one and at the connection between the overlapping sleeve one and the closed top cover, a hydraulic lifting rod arranged on the outer surface of the closed top cover is fixedly installed on the back of the overlapping sleeve one, a high-temperature heater is fixedly installed on one side surface of the overlapping sleeve one and at the bottom edge position, two groups of circulation guide pipes are fixedly connected to the output end of the high-temperature heater, one end of the circulation guide pipe of one group is fixedly connected to the top outer surface of the overlapping sleeve two, and one end of the circulation guide pipe of the other group is fixedly connected to one side surface of the overlapping sleeve one.

[0036] Preferably, motors are symmetrically fixedly mounted on the inner walls on both sides of the closed top cover, a transmission rod is fixedly connected to the output end of the motor, a slider movably sleeved on the outer surface of the transmission rod is fixedly connected to the top inner wall of the closed top cover, and limiting arms arranged on the inner wall of the top of the closed top cover are movably sleeved on the outer surfaces of both ends of the transmission rod.

[0037] Preferably, a swing arm is movably sleeved on the outer surface of the sliding block, a swing plate is swingably sleeved on the other end of the swing arm, and a lower pressure roller movably overlapped on the outer surface of the guide roller is provided on the outer surface of the swing plate.

[0038] The beneficial effects of the present invention are as follows:

[0039] 1. The frost-free and oil-free PVC mesh cloth and its preparation method of the present invention are as follows: glue is applied on the surface of the PVC mesh cloth manually, and then the waterproof layer is covered on the upper and lower surfaces of the PVC mesh cloth, and one end of the PVC mesh cloth is passed through the overlapping sleeve shell 2 to overlap the PVC mesh cloth on the top surface of the guide roller, and then the closed top cover is lowered by the hydraulic lifting rod, and the lower pressure roller on the bottom surface of the swing plate is squeezed and overlapped in the depression between the two guide rollers, so that the guide roller and the lower pressure roller are in a staggered docking state, and at the same time, the staggered extrusion between the guide roller and the lower pressure roller is utilized, and then the PVC mesh cloth is rotated to one side by the guide roller, and the glue between the PVC mesh cloth and the waterproof layer is squeezed out to the two sides of the PVC mesh cloth by the guide roller, and the glue inside the PVC mesh cloth can be evenly spread between the PVC mesh cloth and the waterproof layer by the rolling of the guide roller, thereby reducing the effect of glue accumulation between the PVC mesh cloth and the waterproof layer;

[0040] 2. The frost-free and oil-free PVC mesh cloth and the preparation method thereof described in the present invention can cooperate with a motor to rotate the conveying rod according to different PVC mesh cloths, so that the slider on the outer surface of the conveying rod moves toward the edge positions on both sides of the closed top cover. When the slider moves to both sides, the swing arm on the bottom surface of the slider will swing, and then the swing plate on one end of the swing arm will be pulled upward, so that the staggered fitting gap between the lower pressure roller and the guide roller is expanded, and the gap between the lower pressure roller and the guide roller is used to control the glue thickness between the PVC mesh cloth and the waterproof layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Figure 1 is a flow chart of the method of the present invention;

[0043] Figure 2 is an extended flow chart of the method of the present invention;

[0044] Figure 3 is a detailed expanded flow chart of the method of the present invention;

[0045] Figure 4 is a flow chart of the method use of the present invention;

[0046] Figure 5 It is a schematic diagram of a three-dimensional structure of an overlapped casing of the present invention;

[0047] Figure 6 It is a schematic diagram of a cross-sectional three-dimensional structure of an overlapped casing of the present invention;

[0048] Figure 7 It is a schematic diagram of an unfolded three-dimensional structure of the overlapped casing of the present invention;

[0049] Figure 8 It is a schematic diagram of the three-dimensional structure of the lower pressing roller of the present invention.

[0050] In the figure: 11, overlapping shell one; 111, hydraulic lifting rod; 112, high temperature heater; 113, circulation guide pipe; 114, overlapping shell two; 115, guide roller; 12, closing top cover; 121, motor; 122, transmission rod; 123, limit arm; 124, slider; 125, swing arm; 126, swing plate; 127, pressing roller. DETAILED DESCRIPTION

[0051] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0052] Example 1

[0053] like Figures 1 to 4 As shown, the PVC mesh cloth without frosting and oil separation described in the embodiment of the present invention includes the following components:

[0054] Polyvinyl chloride: 30-40;

[0055] Chlorinated paraffin: 25-30;

[0056] Magnesium hydroxide: 15-20;

[0057] Aluminum hydroxide: 18-20;

[0058] Antimony trioxide: 8-10;

[0059] Zinc borate: 4-5;

[0060] Zinc sulfide: 1-2;

[0061] Stearic acid: 0.5;

[0062] Stabilizer: 4;

[0063] Color enhancement pigment: 0.8~2;

[0064] Plasticizer: 0.5~1;

[0065] The plasticizer includes 10 to 15 parts of phthalic acid diester, 3 to 8 parts of isophthalic acid diester, 1 to 5 parts of diisooctyl sebacate and 1 to 2 parts of alkyl phenyl sulfonate; the stabilizer includes 4.5 to 5 parts of sodium nitrate, 0.8 to 2 parts of sodium carbonate and 1 to 2 parts of polystyrene; the chlorinated paraffin has low volatility, flame retardancy, good electrical insulation and the like.

[0066] Example 2

[0067] like Figure 2 Said, comprising the following steps:

[0068] S1, raw material mixing process;

[0069] S2, PVC raw materials are extruded and woven with auxiliary materials:

[0070] S3, superimposing a protective layer on the surface of the PVC mesh cloth and rolling and compacting it;

[0071] S4. Drying and extruding the PVC mesh cloth.

[0072] S1 also includes the following steps:

[0073] s1. Mix and stir PVC mesh cloth raw materials in various proportions;

[0074] The raw materials in s1 include:

[0075] The mixed raw materials of PVC mesh cloth include: polyvinyl chloride, chlorinated paraffin, magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc borate, zinc sulfide, stearic acid, stabilizer, color pigment, plasticizer;

[0076] The raw materials for weaving PVC mesh cloth include: flow-like PVC slurry, PVC thread, polyester thread, high-strength polyester or nylon;

[0077] s2, extruding the mixed PVC raw materials into strip materials through an extrusion mixing device, and then weaving them through a weaving device;

[0078] s3. The woven PVC mesh cloth is placed into the extrusion device to be rolled and compacted;

[0079] s4. After adding the auxiliary materials, the PVC mesh cloth is quickly formed through the drying device;

[0080] S2 also includes the following steps:

[0081] b1, extruding the mixed PVC raw materials into strip materials through an extrusion mixing device, and then weaving them through a weaving device;

[0082] b2. When weaving the PVC mesh cloth, PVC thread and polyester thread are added inside the PVC mesh cloth to interweave them. High-strength polyester or nylon is used as the base fabric to replace the PVC thread and polyester thread.

[0083] The material of the fluidized PVC slurry has the characteristics of water resistance, high adhesion and impurity protection. The plasticizer in the raw material is used to increase the flexibility of PVC, which is easy for later processing. The stabilizer in the raw material is used to prevent PVC from oxidation and discoloration during processing and use, and increase the stability of the material. Adding fillers to the raw materials can be used to improve the mechanical properties of PVC and reduce production costs.

[0084] b3. Coat the two sides of the woven PVC mesh cloth with a flow-like PVC slurry, plasticizer, stabilizer and filler;

[0085] Example 3

[0086] like Figure 5-Figure 8 As shown, the extrusion mixing device in S1 includes an overlapping shell 11 and a closed top cover 12 movably sleeved on the outer surface of the top of the overlapping shell 11, guide rollers 115 are arranged on the inner wall surfaces of both sides of the overlapping shell 11, and overlapping shell 2 114 is arranged on the two side surfaces of the overlapping shell 11 and at the connection between the overlapping shell 11 and the closed top cover 12, and a hydraulic lifting rod 111 arranged on the outer surface of the closed top cover 12 is fixedly installed on the back of the overlapping shell 11, and a high-temperature heater 112 is fixedly installed on one side surface of the overlapping shell 11 and at the bottom edge position, and two groups of circulation guide pipes 113 are fixedly connected to the output end of the high-temperature heater 112, and one end of one group of circulation guide pipes 113 is fixedly connected to the top of the overlapping shell 2 114. The outer surface of the part, one end of another group of circulating guide pipes 113 is fixedly connected to the side surface of the overlapping sleeve shell 11, and the motors 121 are symmetrically fixedly installed on the inner walls of both sides of the closed top cover 12, and the output end of the motor 121 is fixedly connected to a conveying rod 122, and a slider 124 that is movably sleeved on the outer surface of the conveying rod 122 is fixedly connected on the top inner wall of the closed top cover 12, and the outer surfaces of both ends of the conveying rod 122 are movably sleeved with limiting arms 123 arranged on the inner wall of the top of the closed top cover 12, and the outer surface of the slider 124 is movably sleeved with a swing arm 125, and the other end of the swing arm 125 is swingably sleeved with a swing plate 126, and the outer surface of the swing plate 126 is provided with a lower pressure roller 127 that is movably overlapped on the outer surface of the guide roller 115.

[0087] When the hydraulic lifting rod 111, the guide roller 115, the overlapping shell 114, the motor 121, the transmission rod 122, the swing arm 125, the swing plate 126, the pressing roller 127 and the slider 124 provided by the present invention are used, glue is applied on the surface of the PVC mesh cloth manually, and then the waterproof layer is covered on the upper and lower surfaces of the PVC mesh cloth, and one end of the PVC mesh cloth is passed through the overlapping shell 114 to overlap the PVC mesh cloth on the top surface of the guide roller 115, and then the closed top cover 12 is lowered by the hydraulic lifting rod 111, and the pressing roller 127 on the bottom surface of the swing plate 126 is squeezed. The guide roller 115 is overlapped at the depression between the two guide rollers 115, so that the guide roller 115 and the lower pressure roller 127 are in a staggered docking state. At the same time, the guide roller 115 and the lower pressure roller 127 are used for staggered extrusion, and the guide roller 115 is used to rotate the PVC mesh cloth to one side, and the guide roller 115 is used to squeeze the glue between the PVC mesh cloth and the waterproof layer to both sides of the PVC mesh cloth. In addition, the rolling of the guide roller 115 allows the glue inside the PVC mesh cloth to be evenly spread between the PVC mesh cloth and the waterproof layer, thereby reducing the effect of glue accumulation between the PVC mesh cloth and the waterproof layer.

[0088] According to different PVC mesh cloths, the conveying rod 122 can be rotated in cooperation with the motor 121, so that the slider 124 on the outer surface of the conveying rod 122 moves toward the edge positions on both sides of the closed top cover 12. When the slider 124 moves to both sides, the swing arm 125 on the bottom surface of the slider 124 will swing, and then the swing plate 126 on one end of the swing arm 125 will be pulled upward, so that the staggered fitting gap between the lower pressure roller 127 and the guide roller 115 is expanded, and the gap between the lower pressure roller 127 and the guide roller 115 is used to control the glue thickness between the PVC mesh cloth and the waterproof layer.

[0089] The working principle of the present invention is as follows: glue is applied on the surface of the PVC mesh cloth manually, and then a waterproof layer is covered on the upper and lower surfaces of the PVC mesh cloth, and one end of the PVC mesh cloth is passed through the overlapping sleeve 114 to overlap the PVC mesh cloth on the top surface of the guide roller 115, and then the closed top cover 12 is lowered by the hydraulic lifting rod 111, and the lower pressure roller 127 on the bottom surface of the swing plate 126 is squeezed and overlapped in the concave part between the two guide rollers 115, so that the guide roller 115 and the lower pressure roller 127 are in a staggered docking state, and the staggered extrusion between the guide roller 115 and the lower pressure roller 127 is used, and the guide roller 115 is used to rotate the PVC mesh cloth to one side, and the guide roller 115 is used to squeeze the glue between the PVC mesh cloth and the waterproof layer to both sides of the PVC mesh cloth, and the rolling of the guide roller 115 makes the glue inside the PVC mesh cloth evenly spread between the PVC mesh cloth and the waterproof layer, thereby reducing the effect of glue accumulation between the PVC mesh cloth and the waterproof layer;

[0090] According to different PVC mesh cloths, the conveying rod 122 can be rotated in cooperation with the motor 121, so that the slider 124 on the outer surface of the conveying rod 122 moves toward the edge positions on both sides of the closed top cover 12. When the slider 124 moves to both sides, the swing arm 125 on the bottom surface of the slider 124 will swing, and then the swing plate 126 on one end of the swing arm 125 will be pulled upward, so that the staggered fitting gap between the lower pressure roller 127 and the guide roller 115 is expanded, and the gap between the lower pressure roller 127 and the guide roller 115 is used to control the glue thickness between the PVC mesh cloth and the waterproof layer.

[0091] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. No frosting and no oil separation PVC mesh cloth, characterized by: According to weight fraction, it includes the following components: Polyvinyl chloride: 30-40; Chlorinated paraffin: 25-30; Magnesium hydroxide: 15-20; Aluminum hydroxide: 18-20; Antimony trioxide: 8-10; Zinc borate: 4-5; Zinc sulfide: 1-2; Stearic acid: 0.5; Stabilizer: 4; Color enhancement pigment: 0.8~2; Plasticizer: 0.5~1.

2. The PVC mesh cloth without blooming and oil separation according to claim 1 is characterized by: The plasticizer includes 10 to 15 parts of phthalic acid diester, 3 to 8 parts of isophthalic acid diester, 1 to 5 parts of diisooctyl sebacate and 1 to 2 parts of alkyl phenyl sulfonate; the stabilizer includes 4.5 to 5 parts of sodium nitrate, 0.8 to 2 parts of sodium carbonate and 1 to 2 parts of polystyrene; the chlorinated paraffin has low volatility, flame retardancy, good electrical insulation and the like.

3. A method for preparing a PVC mesh cloth without frost and oil separation, which is applicable to the PVC mesh cloth without frost and oil separation according to any one of claims 1-2, and is characterized in that: The following steps are involved: S1, raw material mixing process; s1. Mix and stir PVC mesh cloth raw materials in various proportions; s2, extruding the mixed PVC raw materials into strip materials through an extrusion mixing device, and then weaving them through a weaving device; s3. The woven PVC mesh cloth is placed into the extrusion device to be rolled and compacted; s4. After adding the auxiliary materials, the PVC mesh cloth is quickly formed through the drying device; S2, PVC raw materials are extruded and woven with auxiliary materials: S3, superimposing a protective layer on the surface of the PVC mesh cloth and rolling and compacting it; S4. Drying and extruding the PVC mesh cloth.

4. The method for preparing a PVC mesh cloth without blooming or oil separation according to claim 3, characterized in that: The raw materials in s1 include: PVC mesh cloth mixed raw materials, including: polyvinyl chloride, chlorinated paraffin, magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc borate, zinc sulfide, stearic acid, stabilizer, color pigment, plasticizer; The raw materials for weaving PVC mesh cloth include: flow-like PVC slurry, PVC thread, polyester thread, high-strength polyester or nylon.

5. The method for preparing the PVC mesh cloth without blooming or oil separation according to claim 3, characterized in that: The S2 further comprises the following steps: b1, extruding the mixed PVC raw materials into strip materials through an extrusion mixing device, and then weaving them through a weaving device; b2. When weaving the PVC mesh cloth, PVC thread and polyester thread are added inside the PVC mesh cloth to interweave them. High-strength polyester or nylon is used as the base fabric to replace the PVC thread and polyester thread. b3. After weaving, the PVC mesh cloth is coated with flow-like PVC slurry, plasticizer, stabilizer and filler on both sides of the material.

6. The method for preparing a PVC mesh cloth without blooming or oil separation according to claim 5, characterized in that: The extrusion mixing device in S1 comprises an overlapping casing (11) and a closed top cover (12) movably sleeved on the outer surface of the top of the overlapping casing (11), guide rollers (115) are arranged on the inner wall surfaces on both sides of the overlapping casing (11), overlapping casing (2) (114) is arranged on the surfaces of both sides of the overlapping casing (11) and at the junction of the overlapping casing (11) and the closed top cover (12), and a closed top cover (12) is fixedly installed on the back of the overlapping casing (11). ) on the outer surface of the overlapping casing (114); a high-temperature heater (112) is fixedly installed on one side surface of the overlapping casing (11) and at the bottom edge; two groups of circulation guide pipes (113) are fixedly connected to the output end of the high-temperature heater (112); one end of one group of circulation guide pipes (113) is fixedly connected to the top outer surface of the overlapping casing (114); and one end of the other group of circulation guide pipes (113) is fixedly connected to one side surface of the overlapping casing (11).

7. The method for preparing a PVC mesh cloth without blooming or oil separation according to claim 6, characterized in that: Motors (121) are symmetrically fixedly mounted on the inner wall surfaces at both sides of the closed top cover (12); a transmission rod (122) is fixedly connected to the output end of the motor (121); a slider (124) movably sleeved on the outer surface of the transmission rod (122) is fixedly connected to the inner wall surface at the top of the closed top cover (12); and limiting arms (123) arranged on the inner wall surface at the top of the closed top cover (12) are movably sleeved on the outer surfaces at both ends of the transmission rod (122).

8. The method for preparing a PVC mesh cloth without blooming or oil separation according to claim 7, characterized in that: A swing arm (125) is movably sleeved on the outer surface of the sliding block (124); a swing plate (126) is swingably sleeved on the other end of the swing arm (125); and a lower pressure roller (127) movably overlapped on the outer surface of the guide roller (115) is provided on the outer surface of the swing plate (126).

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