PVC shoulder clamping knife scraping cloth and manufacturing method thereof

Abstract

The invention discloses PVC (polyvinyl chloride) shoulder clamping knife scraping cloth and a manufacturing method thereof, and relates to the field of automobile tarpaulin, and the scraping cloth comprises a polyester fiber base layer, a polyvinyl chloride coating and a sectional type wear-resistant layer. The polyvinyl chloride coating is formed on the surface of the polyester fiber base layer through a scraping process, and the sectional type wear-resistant layer is a shoulder clamping PVC film, is arranged at the position corresponding to the break angle of the automobile covering cloth and is connected with the polyvinyl chloride coating through a heat sealing process. The manufacturing method comprises the specific steps of preheating and shaping the polyester fiber basic cloth, vertically coating and scraping the polyvinyl chloride paste resin, drying, calendaring, coating and scraping the surface, adjusting the thickness, attaching the wear-resistant layer clamping shoulder PVC film and the like, and wear resistance and portability are combined. The service life of a traditional tarpaulin is at least prolonged by 2.5 times, the raw material and processing cost is reduced, meanwhile, raw material consumption is reduced, and energy conservation and emission reduction in the industry are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile tarpaulin, in particular to a PVC shoulder knife tarpaulin and a manufacturing method thereof, which is especially suitable for covering high-bar vehicles and other automobiles. BACKGROUND

[0002] The automobile tarpaulins on the market are mainly divided into two categories: PE woven tarpaulin and PVC coated tarpaulin. For high-bar vehicles at home and abroad, tarpaulins usually need to be covered and reinforced with tarp poles. However, the tarpaulin is prone to wear and tear at the corner of the tarp pole due to frequent friction, which seriously shortens the service life of the tarpaulin. At the same time, the existing tarpaulin has the contradiction that a high weight makes it inconvenient to use, and a low weight makes it prone to wear and tear and high in use cost.

[0003] The traditional PVC coating process does not realize segmented coating, and the traditional coated tarpaulin is formed by "three coating and three baking". The finished product has poor stability, and the secondary splicing is difficult to heat because the finished product is prone to precipitate on the surface. Moreover, when the traditional coated tarpaulin is subjected to secondary segmented heat sealing, the precipitate cannot be extended in the heating section, and the heat sealing requires a high temperature of 600 degrees and a heat sealing width of less than 5 cm, which cannot meet the demand of 50 cm heat sealing width of the wear-resistant layer of the shoulder tarpaulin. SUMMARY

[0004] In view of the above problems, the present application provides a PVC shoulder knife tarpaulin and a manufacturing method thereof to at least partially solve the problems in the background art.

[0005] The technical scheme adopted by the present application is as follows: In a first aspect, the present application provides a PVC shoulder knife tarpaulin, comprising: an ester fiber base layer; a polyvinyl chloride coating layer formed on the surface of the polyester fiber base layer by a coating and scraping process; a segmented wear-resistant layer disposed on part of the polyvinyl chloride coating layer, the segmented wear-resistant layer being a shoulder PVC film connected to the polyvinyl chloride coating layer by a heat sealing process.

[0006] In a further embodiment, the heat sealing width of the segmented wear-resistant layer is 50 cm, the surface temperature of the wear-resistant layer during heat sealing is 155 degrees, and the length of the heat sealing section is greater than or equal to 1.3 m.

[0007] In a second aspect, the present application provides a manufacturing method of a PVC shoulder knife tarpaulin, comprising the following steps: S1, polyester fiber base fabric pretreatment: the polyester fiber base fabric is preheated and shaped at 120 degrees; S2, first coating and scraping and drying: after the vertical coating and scraping of the polyvinyl chloride paste resin, drying is performed at 175 degrees; S3, calendering: the fabric treated in step S2 is calendered to increase the density; S4, second coating: the surface is coated with polyvinyl chloride paste resin; S5, thickness adjustment and drying: after the thickness is measured and the average gram weight is adjusted, drying is performed at 175 degrees; S6, attaching wear-resistant layer: after the semi-finished cloth is heated, a shoulder PVC film is attached as a segmented wear-resistant layer, the surface temperature of the wear-resistant layer during attachment is 150-160 degrees, the heat sealing width is 45-55 cm, and the heat sealing segment length is greater than or equal to 1.3 m; S7, winding: after the attachment is completed, winding is performed.

[0008] Further, in step S1, the preheating and setting time is 3-5 minutes, and the gram weight of the polyester fiber base cloth is 120-160 g / m2.

[0009] Further, in step S2, the polyvinyl chloride paste resin coating amount is 70-90 g / m2, the drying channel length is 6-8 m, and the cloth conveying speed is 1.2-1.8 m / min.

[0010] Further, in step S3, the calendering uses a double-roller calender, the roller temperature is controlled at 100 degrees, and the pressure is 0.5-1 MPa.

[0011] Further, in step S5, the average gram weight after adjustment is 250-550 g / m2, and the thickness is 0.2-0.5 mm.

[0012] Further, in step S6, the shoulder PVC film thickness is 0.05-0.15 mm, the semi-finished cloth heating temperature is 152-158 degrees, and the heat sealing pressure is 0.8-1.0 MPa.

[0013] The beneficial effects achieved by the above method are as follows: Through the segmented wear-resistant layer design, the wear resistance is targetedly enhanced at the corner positions of the tarpaulin where wear is easy, while the main part remains lightweight, solving the problem that traditional tarpaulins cannot be both lightweight and wear-resistant. Compared with traditional tarpaulins, the service life of the product is at least extended by more than 2.5 times, the replacement frequency is reduced, the raw material consumption is reduced, and environmental benefits are achieved. The raw material and processing costs are low, and the use cost of users can be reduced due to the extended service life. The segmented attachment process is adopted, the heat sealing width reaches 50 cm, the heating segment is extended to more than 1.3 m, solving the problems of difficulty in secondary heat sealing and narrow heat sealing width of traditional plastic-coated cloth, and the process stability is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0015] Figure 1 PVC shoulder knife blade structure schematic diagram in the embodiment of the present application; Figure 2 PVC shoulder knife blade cloth side structure schematic diagram in the embodiment of the present application; Figure 3 PVC shoulder knife blade cloth manufacturing method flowchart schematic diagram in the embodiment of the present application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments only represent some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any method and material similar or equivalent to those described can be applied in the present application. The preferred implementation methods and materials described herein are only for demonstration, but cannot limit the content of the present application.

[0018] The traditional PVC coating lamination process does not realize segmented lamination. The traditional coated fabric is formed by "three coating and three baking", which has the problems of poor product stability, difficult heat sealing due to easy precipitation of finished fabric on the surface during secondary splicing, etc. Moreover, when the traditional coated fabric is secondary segmented heat sealed, the heating section cannot be extended, the heat sealing needs high temperature of 600 degrees, the heat sealing width is less than 5 cm, and it cannot meet the demand of 50 cm heat sealing width of the shoulder cloth wear-resistant layer.

[0019] After realizing the above problems, the present application proposes and discloses a PVC shoulder knife blade cloth and a manufacturing method thereof, which realizes segmented lamination, improves product stability, and solves the problem of difficult secondary splicing heat sealing.

[0020] Reference is made to Figure 1 and Figure 2In the first aspect, this embodiment provides a PVC shoulder-coated fabric, including a polyester fiber base layer, a polyvinyl chloride coating, and a segmented wear-resistant layer. The polyvinyl chloride coating is formed on the surface of the polyester fiber base layer by a coating process. The segmented wear-resistant layer is a shoulder-coated PVC film, which is disposed on part of the polyvinyl chloride coating, specifically at the position corresponding to the corner of the car cover, and is connected to the polyvinyl chloride coating by a heat-sealing process.

[0021] In one specific implementation plan, for a fabric with a total width of 5m, the segmented abrasion-resistant layer includes a left abrasion-resistant layer and a right abrasion-resistant layer, both of which are sandwiched PVC films with a heat-sealed width of 50cm. The left abrasion-resistant layer starts from the left edge of the fabric and is heat-sealed to a distance of 1m from the left edge; the right abrasion-resistant layer starts from the right edge of the fabric and is heat-sealed to a distance of 1m from the right edge, and the left and right abrasion-resistant layers are symmetrically distributed; the distance between the left and right abrasion-resistant layers is 2m.

[0022] In this embodiment, the surface temperature of the wear-resistant layer during heat sealing is 150-160 degrees Celsius, the length of the heat-sealed section is ≥1.3m, and this is achieved through the wrapping angle design of a heating cylinder with a diameter of 90cm.

[0023] See Figure 3 Secondly, this embodiment provides a method for manufacturing a PVC shoulder-clipped knife-coated fabric, comprising the following steps: S1. Pretreatment of polyester fiber base fabric: The polyester fiber base fabric is preheated and shaped at 120 degrees Celsius. In this embodiment, the polyester fiber base fabric is selected as a high-strength polyester fiber fabric with a weight of 120-160 g / m² (500D warp, 840D weft, 18×23). The mesh fabric is preheated and shaped in a 55cm diameter cylinder, with the cylinder temperature stabilized at 120±2 degrees Celsius. The preheating time is controlled at 3-5 minutes depending on the fabric thickness to ensure that the fabric does not shrink or deform.

[0024] S2. First coating and drying: After vertically coating the polyvinyl chloride paste resin, dry at 175 degrees Celsius. In this embodiment, during the first application, the amount of polyvinyl chloride paste resin applied is 70-90 g / ㎡, the pressure of the vertical squeegee is uniformly 0.3-0.5 MPa, and when drying at 175 degrees Celsius, the length of the drying channel is 6-8 m, and the fabric conveying speed is 1.2-1.8 m / min to ensure complete curing of the coating.

[0025] S3. Calendering: Calender the fabric after the treatment in step S2 to increase its density; In this embodiment, the calendering process uses a two-roll calender, with the roller temperature controlled at 100 degrees Celsius and the pressure at 0.5-1 MPa, ensuring that the fabric surface is smooth and the density is increased by about 20%.

[0026] S4, second time coating: the surface is coated with polyvinyl chloride paste resin; In this embodiment, the coating amount of the second time coating of polyvinyl chloride paste resin is 120-150 g / m2, and the surface flatness error after coating is controlled within ±0.2 mm.

[0027] S5, thickness adjustment and drying: after measuring the thickness to adjust the average gram weight, drying at 175 degrees; During thickness adjustment, the target thickness is 0.2-0.5 mm, the average gram weight is controlled within 250-550 g / m2, and the drying parameters are consistent with step S2; S6, attaching wear-resistant layer: after heating the semi-finished product cloth, a shoulder PVC film is attached as a segmented wear-resistant layer, the surface temperature of the wear-resistant layer during attachment is 155 degrees, the heat sealing width is 50 cm, and the heat sealing length is ≥1.3 m; In this embodiment, the wear-resistant layer attachment uses a shoulder PVC film with a thickness of 0.05-0.15 mm and a wear-resistant coefficient ≥10000 times / m2, the semi-finished product cloth is heated to a temperature of 152-158 degrees during heat sealing, the wear-resistant layer is wrapped and heated by a cylinder with a length of 1.3 m to ensure that the surface temperature is stable at 155±3 degrees, the heat sealing pressure is 0.8-1.0 MPa, and after heat sealing, the product is naturally cooled to room temperature before being rolled up.

[0028] S7, rolling up: after the attachment is completed, the product is rolled up.

[0029] The PVC shoulder knife cloth manufactured through the above-mentioned embodiments has a wear-resistant number at the high column canopy rod corner position that is 2.5 times or more than that of traditional tarpaulins, the overall weight is reduced by 30% compared to traditional tarpaulins with the same wear-resistant performance, there is no separation at the heat sealing position, the peeling strength is ≥80 N / 5 cm, and the product fully meets the use requirements of automobile cover cloth.

[0030] It should be noted that in the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0031] While embodiments have been shown and described, it will be obvious to those of ordinary skill in the art that many changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit thereof, and the scope of the present embodiments is defined by the appended claims and their equivalents.

[0032] The above describes the embodiments, which is not limited, and the drawings show only one of the embodiments, and the actual structure is not limited thereto. In general, if a person of ordinary skill in the art is inspired, without departing from the creative purpose, without creative design, similar structure and embodiments of the technical solution are not within the protection scope.

Claims

1. A PVC shoulder strap knife blade, characterized in that, The utility model relates to a kind of PVC floorings, including: Polyester fiber base layer; Polyvinyl chloride coating is formed on the surface of polyester fiber base layer by coating process; Segmented wear-resistant layer is arranged on part of polyvinyl chloride coating, and the segmented wear-resistant layer is shoulder PVC film, which is connected with polyvinyl chloride coating by heat sealing process. The utility model includes the following steps:

2. A method of manufacturing a PVC shoulder-clamping knife blade, characterized by, S1, polyester fiber base cloth pretreatment: polyester fiber base cloth is preheated and shaped at 120 degrees; S2, first coating and drying: after vertical coating polyvinyl chloride paste resin, drying at 175 degrees; S3, polishing: the cloth treated in step S2 is polished to increase density; S4, second coating: surface coating polyvinyl chloride paste resin; S5, thickness adjustment and drying: after measuring thickness to adjust average gram weight, drying at 175 degrees; S6, attaching wear-resistant layer: after heating semi-finished cloth, attaching shoulder PVC film as segmented wear-resistant layer, the surface temperature of wear-resistant layer is 150-160 degrees when attaching, heat sealing width is 45-55 cm, and heat sealing section length is greater than or equal to 1.3 m; S7, winding: winding after attaching is completed. In the step S1, preheating and shaping time is 3-5 minutes, and the gram weight of polyester fiber base cloth is 120-160 g / m2.

3. The method of claim 2, wherein the PVC shoulder strap is manufactured by the steps of: In the step S2, the coating amount of polyvinyl chloride paste resin is 70-90 g / m2, the drying channel length is 6-8 m, and the cloth conveying speed is 1.2-1.8 m / min.

4. The method of claim 2, wherein the PVC shoulder strap is manufactured by the steps of: In the step S3, double-roller polishing machine is used for polishing, the roller temperature is controlled at 100 degrees, and the pressure is 0.5-1 MPa.

5. The method of claim 2, wherein the PVC shoulder strap is manufactured by the steps of: In the step S5, the average gram weight after adjustment is 250-550 g / m2, and the thickness is 0.2-0.5 mm.

6. The method of manufacturing a PVC shoulder-hold knife blade according to claim 2, wherein, In the step S6, the thickness of shoulder PVC film is 0.05-0.15 mm, the heating temperature of semi-finished cloth is 152-158 degrees, and the heat sealing pressure is 0.8-1.0 MPa.

7. The method of manufacturing a PVC shoulder-holding knife blade according to claim 2, wherein ​

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