A coil cooling method for improving the problem of coil edge warping

Abstract

The present invention discloses a coil cooling method for improving the problem of coil edge warping, using a cooling roller with a frosted outer surface to convey and cool a polymer sheet; and an annular smooth surface area is respectively set at both ends of the outer surface of the cooling roller, and the smooth surface area is coaxial with the outer surface of the cooling roller; the main area of ​​the polymer sheet is abutted against the frosted area of ​​the outer surface of the cooling roller, and the edge areas on both sides of the polymer sheet are abutted against the smooth surface areas at both ends of the outer surface of the cooling roller respectively; the difference in the degree of adhesion between the polymer sheet and the smooth surface area and the frosted area is used to accelerate the cooling of the edge areas on both sides of the polymer sheet, thereby accelerating the shaping of the width of the polymer sheet. The present invention can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproof coil prepared by the polymer sheet.

Description

Technical Field

[0001] The invention relates to a coil cooling method for improving the problem of coil edge warping. Background Art

[0002] Waterproof membrane is a flexible building material product that can be rolled into a roll. It is mainly used in building walls, roofs, tunnels, roads, landfills, etc. to resist the seepage of external rainwater and groundwater. As a leak-free connection between the project foundation and the building, the waterproof membrane is the first barrier to waterproofing the entire project and plays a vital role in the entire project.

[0003] Waterproofing membranes are mainly divided into asphalt waterproofing membranes and polymer waterproofing membranes. Among them, polymer waterproofing membranes are waterproofing membranes prepared based on polymer sheets. In the production process of polymer waterproofing membranes, cooling rollers are required to convey and cool the polymer sheets. Moreover, some polymer waterproofing membranes require cooling rollers with frosted outer surfaces. However, in the actual production process, polymer sheets conveyed and cooled by frosted cooling rollers often have edge warping problems, which in turn causes the polymer waterproofing membranes prepared from polymer sheets to have edge warping problems. Summary of the invention

[0004] The object of the present invention is to provide a coil cooling method for improving the problem of coil edge warping, which adopts a cooling roller with a frosted outer peripheral surface to convey and cool a polymer sheet; and an annular smooth area is respectively provided at both ends of the outer peripheral surface of the cooling roller, and the smooth area is coaxial with the outer peripheral surface of the cooling roller; the main area of ​​the polymer sheet is abutted against the frosted area of ​​the outer peripheral surface of the cooling roller, and the edge areas on both sides of the polymer sheet are respectively abutted against the smooth areas at both ends of the outer peripheral surface of the cooling roller; the difference in the degree of adhesion between the polymer sheet and the smooth area and the frosted area is utilized to accelerate the cooling of the edge areas on both sides of the polymer sheet, thereby accelerating the shaping of the width of the polymer sheet.

[0005] Preferably, the width of the edge area of ​​the polymer sheet that is in contact with the smooth surface area is 50 to 200 mm.

[0006] Preferably, a cooling channel for circulating the cooling liquid is provided inside the cooling roller, and circulating cooling liquid is supplied to the cooling channel of the cooling roller.

[0007] Preferably, the section with a frosted outer circumference of the cooling roller is the main section of the cooling roller, and the section with a smooth outer circumference of the cooling roller is the edge section of the cooling roller; the cross-sectional area of ​​the inner cavity of the cooling channel in the edge section is made larger than the cross-sectional area of ​​the inner cavity of the cooling channel in the main section; the difference in cross-sectional area between the inner cavity of the cooling channel in the edge section and the main section is utilized to accelerate the cooling of the edge areas on both sides of the polymer sheet, thereby accelerating the shaping of the width of the polymer sheet.

[0008] Preferably, the contact time between the polymer sheet and the cooling roller is controlled by adjusting the rotation speed of the cooling roller.

[0009] The advantages and beneficial effects of the present invention are: providing a coil cooling method for improving the problem of coil edge warping, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproof coil prepared from the polymer sheet.

[0010] Compared with the frosted area, the polymer sheet fits better with the smooth area, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproof membrane prepared from the polymer sheet.

[0011] Compared with the main section, the cross-sectional area of ​​the cooling channel inner cavity in the edge section is larger, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproof membrane prepared from the polymer sheet. DETAILED DESCRIPTION

[0012] The specific implementation of the present invention is further described below in conjunction with the examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0013] The technical solutions specifically implemented in the present invention are as follows:

[0014] A method for cooling a polymer waterproofing roll to improve the problem of edge warping. The polymer waterproofing roll is made based on a polymer sheet. During the production process of the polymer waterproofing roll, a cooling roller with a frosted outer surface is used to convey and cool the polymer sheet; and the following measures are taken:

[0015] Annular smooth areas are respectively provided at both ends of the outer circumference of the cooling roller, and the smooth areas are coaxial with the outer circumference of the cooling roller; the main area of ​​the polymer sheet is abutted against the frosted area of ​​the outer circumference of the cooling roller, and the edge areas on both sides of the polymer sheet are abutted against the smooth areas at both ends of the outer circumference of the cooling roller, respectively, and the width of the edge areas on the polymer sheet abutting against the smooth areas is 50 to 200 mm; the difference in the degree of adhesion between the polymer sheet and the smooth area and the frosted area is utilized to accelerate the cooling of the edge areas on both sides of the polymer sheet; compared with the frosted area, the polymer sheet is better adhered to the smooth area, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproofing roll prepared by the polymer sheet;

[0016] The section with a frosted outer circumference of the cooling roller is the main section of the cooling roller, and the section with a smooth outer circumference of the cooling roller is the edge section of the cooling roller; a cooling channel for the circulation of coolant is arranged inside the cooling roller, and circulating coolant is supplied to the cooling channel of the cooling roller; and the cross-sectional area of ​​the inner cavity of the cooling channel in the edge section is made larger than the cross-sectional area of ​​the inner cavity of the cooling channel in the main section; the difference in cross-sectional area between the inner cavity of the cooling channel in the edge section and the main section is used to accelerate the cooling of the edge areas on both sides of the polymer sheet; compared with the main section, the cross-sectional area of ​​the inner cavity of the cooling channel in the edge section is larger, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproofing roll prepared from the polymer sheet;

[0017] The contact time between the polymer sheet and the cooling roller is controlled by adjusting the rotation speed of the cooling roller, so that the polymer sheet can be effectively cooled.

[0018] As can be seen from the above, the present invention can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproof roll prepared from the polymer sheet.

[0019] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for cooling a polymer waterproofing roll to improve the problem of edge warping, wherein the polymer waterproofing roll is made based on a polymer sheet; characterized in that: In the production process of polymer waterproofing membranes, cooling rollers with frosted outer surfaces are used to convey and cool polymer sheets; and the following measures are taken: Annular smooth areas are respectively provided at both ends of the outer circumference of the cooling roller, and the smooth areas are coaxial with the outer circumference of the cooling roller; the main area of ​​the polymer sheet is abutted against the frosted area of ​​the outer circumference of the cooling roller, and the edge areas on both sides of the polymer sheet are abutted against the smooth areas at both ends of the outer circumference of the cooling roller, respectively, and the width of the edge areas on the polymer sheet abutting against the smooth areas is 50 to 200 mm; the difference in the degree of adhesion between the polymer sheet and the smooth area and the frosted area is utilized to accelerate the cooling of the edge areas on both sides of the polymer sheet; compared with the frosted area, the polymer sheet is better adhered to the smooth area, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproofing roll prepared by the polymer sheet; The section with a frosted outer circumference of the cooling roller is the main section of the cooling roller, and the section with a smooth outer circumference of the cooling roller is the edge section of the cooling roller; a cooling channel for the circulation of coolant is arranged inside the cooling roller, and circulating coolant is supplied to the cooling channel of the cooling roller; and the cross-sectional area of ​​the inner cavity of the cooling channel in the edge section is made larger than the cross-sectional area of ​​the inner cavity of the cooling channel in the main section; the difference in cross-sectional area between the inner cavity of the cooling channel in the edge section and the main section is used to accelerate the cooling of the edge areas on both sides of the polymer sheet; compared with the main section, the cross-sectional area of ​​the inner cavity of the cooling channel in the edge section is larger, which can make the edge areas on both sides of the polymer sheet cool faster, accelerate the shaping of the width of the polymer sheet, and improve the edge warping problem of the polymer sheet and the polymer waterproofing roll prepared from the polymer sheet; The contact time between the polymer sheet and the cooling roller is controlled by adjusting the rotation speed of the cooling roller, so that the polymer sheet can be effectively cooled.