Velvet release paper for synthetic leather

Abstract

The utility model discloses velvet release paper for synthetic leather, which comprises release paper, one side of the release paper is provided with a waterborne polyurethane coating, one side of the waterborne polyurethane coating is provided with a velvet fabric layer, and the velvet release paper is characterized by further comprising a winding drum, two ends of the winding drum are provided with external thread drums, and the external thread drums are connected with the winding drum. The outer side of the external thread cylinder is connected with a limiting disc in a threaded fit mode, clamping grooves are formed in the outer surface of the winding drum and the outer surface of the external thread cylinder, release paper side portions are arranged at the two ends of the release paper, a plurality of limiting holes are formed in the release paper side portions, and after the release paper side portions are clamped into the clamping grooves, the limiting disc is arranged in the limiting holes. The limiting holes abut against and are connected with the columns in a clamped mode, release paper is clamped into the clamping grooves through the side portions of the release paper, the limiting holes are connected with the columns in a clamped mode, the release paper can be conveniently rolled on the outer surface of the winding drum, and the side portions of the release paper can be conveniently separated from the clamping grooves during unwinding. And the limiting hole is separated from the column body, so that the release paper is completely separated from the winding drum.

Description

Technical Field

[0001] The utility model relates to the technical field of velvet-feel release paper for synthetic leather, in particular to velvet-feel release paper for synthetic leather. Background Art

[0002] When the release paper is used to process velvet fabrics for other synthetic leathers, the release paper is used to support the velvet fabrics, so as to facilitate the separation of the release paper from the velvet fabrics and the bonding and connection of the velvet fabrics with the synthetic leather. The disadvantages of the existing velvet release paper for synthetic leather are that the release paper and the velvet fabric layer are not easy to be separated for bonding with the synthetic leather, and secondly, the side of the release paper cannot be separated from the card slot when the release paper is unrolled; it is impossible to completely separate the release paper from the roll, and people have conducted a lot of research on this. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a velvet release paper for synthetic leather, which can solve the above-mentioned problems in the prior art.

[0004] The utility model is realized through the following technical scheme: the utility model is a velvet-feeling release paper for synthetic leather, characterized in that it comprises release paper, one side of the release paper is provided with an aqueous polyurethane coating, one side of the aqueous polyurethane coating is provided with a velvet-feeling fabric layer, and characterized in that it also comprises a reel, both ends of the reel are provided with externally threaded cylinders, the outer side of the externally threaded cylinder is threadedly connected to a limiting disk, the outer surfaces of the reel and the externally threaded cylinder are provided with a clamping groove, both ends of the release paper are provided with release paper side portions, a plurality of limiting holes are provided in the release paper side portions, and after the release paper side portions are inserted into the clamping grooves, the limiting holes are clamped against the column.

[0005] According to a further technical solution, mounting holes are provided in the winding drum and the externally threaded cylinder.

[0006] According to a further technical solution, the slot is provided with an opening, and the opening of the slot extends to the outer side surfaces of the external threaded cylinder and the winding cylinder.

[0007] According to a further technical solution, the release paper is wound around the outer surface of the roll for multiple turns.

[0008] According to a further technical solution, an internal threaded hole is provided in the limiting plate, and the internal threaded hole is threadably connected to the external threaded tube.

[0009] The beneficial effects of the utility model are as follows: 1. A water-based polyurethane coating is processed on one side of the release paper, and then the velvet fabric layer and the water-based polyurethane coating are connected and fixed, so that the velvet fabric layer can be easily separated from the release paper and then pasted with the synthetic leather.

[0010] Second, the release paper is inserted into the card slot through the side of the release paper, and the limiting hole is engaged with the column, so that the release paper is rolled up on the outer surface of the roll, and the side of the release paper can be easily separated from the card slot when unrolling; and the limiting hole is separated from the column, so that the release paper and the roll are completely separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0012] Figure 1 This is a schematic diagram of the overall structure of a velvet release paper for synthetic leather of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure in which the middle release paper is installed behind the reel device;

[0014] Figure 3 for Figure 2 Schematic diagram of the internal structure of the middle reel device;

[0015] Figure 4 for Figure 2 Schematic diagram at A in the middle;

[0016] Figure 5 for Figure 2 Schematic diagram at B in the middle;

[0017] In the figure, there are velvet fabric layer 11, water-based polyurethane coating 13, release paper 14, release paper side 22, limiting hole 21, mounting hole 24, limiting plate 25, reel 26, internal thread hole 27, column 31, external thread cylinder 32, and slot 33. DETAILED DESCRIPTION

[0018] like Figure 1-Figure 5 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1The up-down, left-right, front-back directions of the projection relationship are consistent. The utility model is a velvet release paper for synthetic leather, including a release paper 14, a water-based polyurethane coating 13 is arranged on one side of the release paper 14, a velvet fabric layer 11 is arranged on one side of the water-based polyurethane coating 13, and the release paper 14, the water-based polyurethane coating 13 and the velvet fabric layer 11 are processed to form a velvet release paper structure for synthetic leather. After the release paper 14 is peeled off, the velvet fabric layer 11 can be separated from one side of the release paper 14, and the water-based polyurethane coating 13 is used to bond with the synthetic leather; the above-mentioned release paper production process can refer to The Chinese patent document “A high-performance WPU ultrafine fiber synthetic leather and its clean production method” with publication number “CN106939517B” records in detail the prior art such as “forming a WPU film on release paper, then coating the WPU film with PUR using a PUR coating device, and then laminating it with a shrinkage and kneading base fabric, cooling and rolling it up, leaving it to mature at room temperature to obtain a composite base fabric, and peeling off the release paper to obtain a high-performance WPU ultrafine fiber synthetic leather”. However, the substrate in this patent is a velvet fabric layer 11, and the WPU film is the water-based polyurethane coating 13.

[0019] Advantageously, it also includes a winding device, which includes a winding drum 26, with external threaded barrels 32 at both ends of the winding drum 26, and a limit plate 25 is provided on the outer side of the external threaded barrel 32 in threaded cooperation connection, and a clamping groove 33 is provided on the outer surfaces of the winding drum 26 and the external threaded barrel 32.

[0020] Advantageously, a mounting hole 24 is provided in the reel 26 and the externally threaded barrel 32, and the mounting hole 24 is used to connect with a transmission structure in an external space. For example, after a rotating shaft driven by a motor passes through the mounting hole 24, the rotating shaft maintains a power connection with the reel 26 and the externally threaded barrel 32. The mounting hole 24 can be arranged to be a rectangular structure, and the rectangular contour on the rotating shaft is used to abut and engage with the mounting hole 24 to achieve power connection, etc. After the reel 26 and the externally threaded barrel 32 rotate, the release paper can be wound or unwound.

[0021] Advantageously, the clamping groove 33 is open, and the opening of the clamping groove 33 extends to the outer side surfaces of the external threaded barrel 32 and the winding barrel 26 .

[0022] Advantageously, release paper side portions 22 are provided at both ends of the release paper 14, and a plurality of limiting holes 21 are provided in the release paper side portions 22. After the release paper side portions 22 are inserted into the card slot 33, a plurality of columns 31 are provided in the card slot 33, and the limiting holes 21 are arranged against the columns 31, and the release paper 14 passes around the outer surface of the roll 26 and is wrapped multiple times.

[0023] Advantageously, a plastic collar may be sleeved inside the limiting hole 21 to prevent the limiting hole 21 from deforming and affecting the clamping and fixing with the column 31 .

[0024] Advantageously, the release paper 14 can be wound alone on the outer surface of the reel 26, so that the water-based polyurethane coating 13 and the velvet fabric layer 11 can be processed separately on one side of the release paper 14. The composite release paper composed of the release paper 14, the water-based polyurethane coating 13 and the velvet fabric layer 11 can also be wound on the outer surface of the reel 26 for easy factory use.

[0025] Advantageously, an internal threaded hole 27 is provided in the limiting plate 25 , and the internal threaded hole 27 passes through the external threaded tube 32 , and the internal threaded hole 27 is threadedly connected to the external threaded tube 32 .

[0026] By rotating the limiting disk 25 , the position of the limiting disk 25 on the outer surface of the external threaded tube 32 can be adjusted, and release papers of different widths can be better limited, so that the release paper can be rolled or unrolled on the outer surface of the reel 26 .

[0027] The release paper is inserted into the card slot 33 through the release paper side portion 22, and the limiting hole 21 is engaged with the column 31, so that the release paper is rolled up on the outer surface of the reel 26, and the release paper side portion 22 can be easily separated from the card slot 33 when unrolling; and the limiting hole 21 is separated from the column 31, so that the release paper is completely separated from the reel 26.

[0028] The above are only specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model; therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A velvet release paper for synthetic leather, comprising a release paper (14), wherein one side of the release paper (14) is provided with an aqueous polyurethane coating (13), and one side of the aqueous polyurethane coating (13) is provided with a velvet fabric layer (11), characterized in that: The invention also comprises a winding drum (26), wherein both ends of the winding drum (26) are provided with externally threaded drums (32), and the outer side of the externally threaded drum (32) is provided with a limit plate (25) in threaded cooperation, and the outer surfaces of the winding drum (26) and the externally threaded drum (32) are provided with a clamping groove (33), and both ends of the release paper (14) are provided with a release paper side portion (22), and a plurality of limit holes (21) are provided in the release paper side portion (22), and a plurality of columns (31) are provided in the clamping groove (33), and after the release paper side portion (22) is inserted into the clamping groove (33), the limit holes (21) and the columns (31) are clamped and connected.

2. The velvet release paper for synthetic leather according to claim 1, characterized in that: The winding drum (26) and the external threaded drum (32) are provided with mounting holes (24).

3. The velvet release paper for synthetic leather according to claim 1, characterized in that: The clamping groove (33) is provided with an opening, and the opening of the clamping groove (33) extends to the outer side surfaces of the external threaded cylinder (32) and the winding cylinder (26).

4. The velvet release paper for synthetic leather according to claim 1, characterized in that: The release paper (14) is wound around the outer surface of the roll (26) and is wound multiple times.

5. The velvet release paper for synthetic leather according to claim 4, characterized in that: An internal threaded hole (27) is provided in the limiting plate (25), and the internal threaded hole (27) is threadably connected to the external threaded cylinder (32).

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