Thermal transfer label and label roll paper

Abstract

A thermal transfer label (100) and label roll paper (200), which relate to the technical field of label printing. The thermal transfer label (100) comprises a bottom release layer (1), a film-covering unit (2) and a printing unit (3), wherein the film-covering unit (2) comprises a protective layer (22), the protective layer (22) being arranged on the bottom release layer (1). One side of the printing unit (3) is detachably connected to the bottom release layer (1), and the other side of the printing unit (3) is configured for information printing, and is adapted to be bonded to the side of the film-covering unit (2) facing away from the bottom release layer (1), so as to cover the printing unit (3) with the protective layer (22). Information can be printed by means of a printer or can be handwritten on the side of the printing unit (3) of the thermal transfer label (100) that faces away from the bottom release layer (1), and then the bottom release layer (1) is folded, such that the protective layer (22) covers the printing unit (3). The protective layer (22) can isolate the information on the printing unit (3) from substances such as air, water, and oil stains, so as to protect the printing unit (3).

Description

A heat transfer label and label roll

[0001] Cross-references to related applications

[0002] This application claims priority to the following applications:

[0003] Chinese patent application CN202422621562.X, entitled "Heat Transfer Label," filed on October 29, 2024;

[0004] Chinese patent application CN202422621565.3, entitled "Printing paper and thermal transfer label", was filed on October 29, 2024;

[0005] Chinese patent application CN 202422621560.0, entitled "Thermal Printing Label," filed on October 29, 2024;

[0006] Chinese patent application CN 202422621567.2, entitled "Label Paper for Printing," filed on October 29, 2024;

[0007] Chinese patent application CN 202422621569.1, entitled "Heat transfer label and label roll", was filed on October 29, 2024;

[0008] The entire contents of the aforementioned application are incorporated herein by reference. Technical Field

[0009] This application relates to the field of label printing technology, specifically to a thermal transfer label and label roll. Background Technology

[0010] Thermal transfer label machines utilize specialized ribbons, working on a principle similar to a fax machine printhead, to transfer the toner coating on the ribbon onto PET self-adhesive labels or other materials through heating. The labels are highly weather-resistant and do not easily fade, and are widely used for cable marking, equipment marking, and switch marking in power, telecommunications, and building computer rooms.

[0011] Current methods for producing thermal transfer labels typically involve users purchasing blank labels and then printing or handwriting the content onto them. The printed or handwritten content is exposed on the label surface, making it susceptible to contact with air, water, oil, and other substances, leading to corrosion and affecting the display of the label content. Therefore, it is necessary to provide a protective thermal transfer label to solve these problems.

[0012] Application content

[0013] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a thermal transfer label and label roll to solve the technical problem that in the prior art, the printed or handwritten content of the thermal transfer label is exposed on the label surface, and the label is easily exposed to air, water, oil and other substances, which leads to easy corrosion of the label and affects the display effect of the label content.

[0014] To achieve the above-mentioned technical objectives, the present application adopts the following technical solution:

[0015] Firstly, this application provides a heat transfer label, comprising:

[0016] Release layer at the bottom;

[0017] A laminating unit, the laminating unit including a protective layer disposed on the release layer; and

[0018] A printing unit, one side of which is detachably connected to the base release layer, and the other side of which is used for printing information and is adapted to be combined with the side of the laminating unit opposite to the base release layer to cover the printing unit with the protective layer.

[0019] In some embodiments, the release layer has a symmetrically arranged film area and a printing area. The film unit further includes a first adhesive layer and a second adhesive layer. The first adhesive layer, the protective layer, and the second adhesive layer are stacked sequentially, and the first adhesive layer adheres to the film area. The printing unit includes a third adhesive layer and a label layer. The third adhesive layer adheres to the printing area. One side of the label layer is adhered to the third adhesive layer, and the other side of the label layer can be bonded to the side of the second adhesive layer opposite to the protective layer.

[0020] In some embodiments, the release liner includes a printing area and a laminating area, with a fold line formed between the printing area and the laminating area. The label layer is stacked on the release liner and disposed in the printing area, and the protective layer is stacked on the release liner and disposed in the laminating area. The protective layer can be folded along the fold line to cover and adhere to the label layer. The printing area and the laminating area are separated along the fold line, which can cause one of the printing area and the laminating area to separate from the label layer or the protective layer disposed thereon, while leaving the other of the printing area and the laminating area on the corresponding label layer or the protective layer.

[0021] In some embodiments, the release liner includes a printing area and a laminating area, with a fold line formed between the printing area and the laminating area. The label layer is stacked on the release liner and disposed in the printing area, and the protective layer is stacked on the release liner and disposed in the laminating area. A fourth adhesive layer is also provided on the side of the protective layer away from the release liner. The fourth adhesive layer is used to bond to the label layer and the protective layer respectively. The edge of the fourth adhesive layer is spaced apart from the edge of the release liner. The protective layer can be adhered to the label layer through the fourth adhesive layer when the release liner is folded along the fold line.

[0022] In some embodiments, the release layer has a printing area and a lamination area;

[0023] A printing unit, the printing unit being protruding from the printing area; and

[0024] A laminating unit is provided protruding from the laminating area. The printing unit and the laminating unit are located on the same side of the release layer. The absolute value of the difference between the thickness of the laminating unit and the thickness of the printing unit does not exceed 0.15 mm. The laminating unit and the printing unit are arranged at intervals along the axial direction of the label roll so that when the label roll is output, the laminating unit and the printing unit can be pressed by the printer's rubber rollers simultaneously.

[0025] In some embodiments, the release liner includes a printing area and a laminating area, the printing area and the laminating area are arranged along the length of a single printing unit, a fold line is provided between the printing area and the laminating area, the label layer is disposed in the printing area, the protective layer is disposed in the laminating area, and the release liner is folded along the fold line so that the protective layer covers and adheres to the label layer.

[0026] In some embodiments, the first adhesive layer is AB double-sided adhesive, with the stronger adhesive side of the AB double-sided adhesive bonded to the coated area and the weaker adhesive side of the AB double-sided adhesive bonded to the protective layer.

[0027] In some embodiments, the adhesive force between the third adhesive layer and the label layer is greater than the adhesive force between the third adhesive layer and the release liner.

[0028] In some embodiments, the printing unit further includes a printed pattern layer located on the side of the label layer facing away from the third adhesive layer, the printed pattern layer being capable of connecting the second adhesive layer when the laminating area and the printing area are folded together.

[0029] In some embodiments, the release layer has a fold-off tear line, and the film-coated area and the printing area are symmetrical about the fold-off tear line.

[0030] In some embodiments, the coating unit further includes release paper attached to the side of the second adhesive layer facing away from the protective layer.

[0031] In some embodiments, one end of the release paper is not covered by the second adhesive layer.

[0032] In some embodiments, the release paper includes a first portion and a second portion that are not connected, the first portion and the second portion together covering all portions of the second adhesive layer.

[0033] In some embodiments, the fold line is located at the center line of the release layer, the printing area and the film coating area are connected by the fold line, and are symmetrically distributed horizontally or vertically along the fold line as the axis.

[0034] In some embodiments, the side of the label layer opposite to the release layer is used to add printing information. The printing unit further includes a fourth adhesive layer, one side of which is bonded to the protective layer and the other side of which is bonded to the label layer. This allows the protective layer to cover and bond the label layer, and the bonding strength between the fourth adhesive layer and the protective layer and the label layer satisfies the requirement that the protective layer and the label layer remain attached together when the printing area and the film-coated area are separated along the fold line.

[0035] In some embodiments, the printing unit further includes a fifth adhesive layer disposed between the label layer and the backing release layer. The two sides of the fifth adhesive layer are respectively bonded to the label layer and the backing release layer, and the bonding strength between the fifth adhesive layer and the backing release layer is such that when the printing area and the film-coated area are separated along the fold line, the label layer can be separated from the backing release layer.

[0036] In some embodiments, the printing unit further includes a sixth adhesive layer disposed between the protective layer and the base release layer. The two sides of the sixth adhesive layer are respectively bonded to the protective layer and the base release layer, and the bonding strength between the sixth adhesive layer and the base release layer is such that when the printing area and the film coating area are separated along the fold line, the sixth adhesive layer always remains on the base release layer.

[0037] In some embodiments, the printing unit further includes release paper covering the fourth adhesive layer.

[0038] In some embodiments, the release paper includes a first segment and a second segment, which are separated and can together cover all parts of the fourth adhesive layer.

[0039] In some embodiments, the release paper is elongated, and the first segment and the second segment are separated along the length of the release paper.

[0040] In some embodiments, the sixth adhesive layer is AB double-sided adhesive, and the adhesive strength between the sixth adhesive layer and the protective layer is less than the adhesive strength between the sixth adhesive layer and the bottom release layer, so that when the bottom release layer separates from the protective layer, the sixth adhesive layer separates from the protective layer along with the bottom release layer.

[0041] In some embodiments, the number of printing units in the heat transfer label is multiple, and the heat transfer label further includes connecting lines. The connecting lines are disposed between two adjacent printing units and connected to both adjacent printing units, so that the printing areas or coating areas of the multiple printing units are alternately arranged sequentially along the winding direction or the printing areas or coating areas of the multiple printing units are arranged side by side along a direction perpendicular to the winding direction.

[0042] In some embodiments, the connection strength between the connecting line and the two printing units is such that when the two printing units are disconnected along the connecting line, the printing area and the coating area remain connected.

[0043] In some embodiments, at least one edge of the label layer is spaced apart from the edge of the release liner.

[0044] In some embodiments, in the arrangement direction of the label layer and the protective layer, the distance between the edge of the fourth adhesive layer and the edge of the bottom release layer is greater than the dimension between the edge of the label layer and the edge of the bottom release layer.

[0045] In some embodiments, after the release layer is folded along the fold line, the edge of the protective layer does not exceed the edge of the label layer.

[0046] In some embodiments, the distance between the label layer and the protective layer in their arrangement direction is greater than three times the sum of the thicknesses of the label layer and the protective layer, but less than 10 mm.

[0047] In some embodiments, the surface of the protective layer is further provided with release paper, which is connected to the protective layer via the fourth adhesive layer to protect the fourth adhesive layer.

[0048] In some embodiments, the release paper includes a first portion and a second portion, which are separated and together can cover all portions of the fourth adhesive layer.

[0049] In some embodiments, the release paper is elongated, and the first portion and the second portion are separated along the length of the release paper.

[0050] In some embodiments, the ratio of the area occupied by the first part to the area occupied by the second part is 1:2 to 1:10.

[0051] In some embodiments, the distance between the edge of the fourth adhesive layer and the edge of the base release layer ranges from 1 to 8 mm.

[0052] In some embodiments, the fold line is located at the center line of the release layer, and the printing area and the film coating area are symmetrically distributed horizontally or vertically along the fold line as an axis of symmetry.

[0053] In some embodiments, the printing unit further includes a fifth adhesive layer disposed between the label layer and the backing release layer. The two sides of the fifth adhesive layer are respectively bonded to the label layer and the backing release layer, and the adhesive strength of the fifth adhesive layer is sufficient to keep the protective layer and the label layer bonded even when the label layer and the backing release layer are separated.

[0054] In some embodiments, the printing unit further includes a sixth adhesive layer disposed between the protective layer and the bottom release layer. The sixth adhesive layer is an AB double-sided adhesive, and both sides of the sixth adhesive layer are respectively bonded to the protective layer and the bottom release layer. The adhesive strength of the sixth adhesive layer is such that when the protective layer and the bottom release layer are separated, the fourth adhesive layer always keeps the protective layer and the label layer bonded, and the sixth adhesive layer remains on the bottom release layer.

[0055] In some embodiments, the number of printing units in the printing paper is multiple, and the printing paper also includes connecting lines. The connecting lines are disposed between two adjacent printing units and connected to both adjacent printing units, so that the printing areas or coating areas of the multiple printing units are arranged alternately in sequence along the winding direction or the printing areas or coating areas of the multiple printing units are arranged side by side along a direction perpendicular to the winding direction.

[0056] In some embodiments, the connecting lines are dotted to form a point-to-point connection between two adjacent printing units.

[0057] In some embodiments, the thickness of the coating unit is not greater than the thickness of the printing unit.

[0058] In some embodiments, the thickness of the printing unit is less than the thickness of the coating unit, and the difference between the thickness of the coating unit and the thickness of the printing unit is 0.01-0.1 mm.

[0059] In some embodiments, the side of the coating unit opposite to the coating area has release paper.

[0060] In some embodiments, the length of the printing unit is less than or equal to the length of the coating unit.

[0061] In some embodiments, the release paper includes a first part and a second part, with an easy-tear line between the first part and the second part, and the area of ​​the laminating unit corresponding to the second part is the same as the area of ​​the printing unit.

[0062] In some embodiments, the direction of the tear line is parallel or perpendicular to the axis of the printed label.

[0063] In some embodiments, the laminating unit includes a first adhesive layer, a protective layer, and a second adhesive layer stacked sequentially. The first adhesive layer is connected to the bottom release layer, and the second adhesive layer is connected to the release paper. The printing unit includes a third adhesive layer and a label layer connected together. The side of the third adhesive layer opposite to the label layer is connected to the bottom release layer. The thickness of the label layer is greater than the sum of the thicknesses of the first adhesive layer, the protective layer, and the second adhesive layer.

[0064] In some embodiments, the area ratio of the first portion to the area of ​​the second portion is between 1:8 and 10:1.

[0065] In some embodiments, the thickness of the first portion is greater than the thickness of the second portion.

[0066] In some embodiments, the distance between the printing unit and the coating unit is 1-8 mm.

[0067] In some embodiments, the release layer has a fold line, and the printing area and the coating area are symmetrical about the fold line.

[0068] In some embodiments, the printing unit further includes a printed pattern layer, which is adhered to the side of the label layer facing away from the third adhesive layer, and the thickness of the printed pattern layer is no greater than 0.01 mm.

[0069] In some embodiments, the fold line is located at the center line of the release layer, the printing area and the coating area are symmetrically distributed horizontally or vertically along the fold line, and the printing area and the coating area are connected by the fold line.

[0070] In some embodiments, the aspect ratio of a single printing unit ranges from 1.1:1 to 12:1.

[0071] In some embodiments, the side of the label layer opposite to the bottom release layer is used to add printing information, and the side of the protective layer opposite to the bottom release layer is further provided with a fourth adhesive layer, which is used to bond to the protective layer and the label layer respectively.

[0072] In some embodiments, the printing unit further includes a fifth adhesive layer disposed between the label layer and the backing release layer. The two sides of the fifth adhesive layer are respectively bonded to the label layer and the backing release layer, and the adhesive strength of the fifth adhesive layer is sufficient to keep the protective layer and the label layer bonded even when the label layer and the backing release layer are separated.

[0073] In some embodiments, the printing unit further includes a sixth adhesive layer disposed between the protective layer and the bottom release layer. The sixth adhesive layer is bonded to the protective layer and the bottom release layer on both sides, respectively. The sixth adhesive layer is an AB double-sided adhesive, and the adhesive strength of the sixth adhesive layer is such that when the protective layer and the bottom release layer are separated, the fourth adhesive layer always keeps the protective layer and the label layer bonded, and the sixth adhesive layer remains on the bottom release layer.

[0074] In some embodiments, the protective layer surface is further provided with release paper, the release paper comprising a first portion and a second portion, the first portion and the second portion being disconnected.

[0075] In some embodiments, the break lines of the first portion and the second portion extend along the width direction of a single printing unit.

[0076] In some embodiments, the break lines of the first portion and the second portion extend along the length direction of a single printing unit, and the interval between the printing area and the coating area is greater than 2 mm.

[0077] In some embodiments, the size of the printing area and the size of the coating area are both no greater than 50 mm along the length direction of a single printing unit.

[0078] In some embodiments, when the printing area and the coating area are folded along the fold line, the side of the printing area is aligned with the side of the coating area.

[0079] In some embodiments, the printing unit includes a plurality of printing units, which are spaced apart along the width direction of a single printing unit.

[0080] In some embodiments, the printing unit includes a plurality of printing units, which are spaced apart along the length direction of a single printing unit, and a connecting line is formed between two adjacent printing units, wherein the connection strength between two adjacent printing units is less than or equal to the connection strength between the printing area and the coating area.

[0081] In some embodiments, the connecting lines are dotted to form a point-to-point connection between two adjacent printing units.

[0082] In some embodiments, a roller is also included for winding around a plurality of the printing units.

[0083] Secondly, this application also provides a label roll, including a roller and a plurality of heat transfer labels as described above, wherein the plurality of heat transfer labels are connected in sequence by tear lines and wound around the roller.

[0084] Thirdly, this application also provides a label roll, including a roller and a heat transfer label as described above, wherein the printing paper is wound around the roller.

[0085] Compared with the prior art, the thermal transfer label provided in this application has a printing unit on the side opposite to the release layer that can use a printer to print information or handwritten information. Then the release layer is folded so that a protective layer covers the printing unit. The protective layer can isolate the information of the printing unit from air, water, oil and other substances to protect the printing unit. Attached Figure Description

[0086] Figure 1 is a schematic diagram of the structure of the heat transfer label provided in an embodiment of this application;

[0087] Figure 2 is a schematic diagram of the structure of an embodiment of the release paper provided in this application;

[0088] Figure 3 is a schematic diagram of the structure of another embodiment of the release paper provided in this application;

[0089] Figure 4 is a schematic diagram of the structure of the label roll provided in an embodiment of this application;

[0090] Figure 5 is a three-dimensional structural diagram of a heat transfer label provided in an embodiment of this application;

[0091] Figure 6 is a cross-sectional view of the printing paper provided in an embodiment of this application;

[0092] Figure 7 is a three-dimensional structural diagram of a heat transfer label provided in another embodiment of this application;

[0093] Figure 8 is a three-dimensional structural diagram of a heat transfer label provided in another embodiment of this application;

[0094] Figure 9 is a three-dimensional structural schematic diagram of a heat transfer label provided in another embodiment of this application;

[0095] Figure 10 is a schematic diagram of the connection between the fourth adhesive layer and the release paper according to another embodiment of this application;

[0096] Figure 11 is a schematic diagram of the connection between the fourth adhesive layer and the release paper according to another embodiment of this application;

[0097] Figure 12 is a three-dimensional structural diagram of a heat transfer label and label roll provided in an embodiment of this application;

[0098] Figure 13 is a cross-sectional view of the thermal transfer label provided in an embodiment of this application;

[0099] Figure 14 is a three-dimensional structural diagram of a thermal transfer label and label roll provided in another embodiment of this application;

[0100] Figure 15 is a three-dimensional structural diagram of a heat transfer label and label roll provided in another embodiment of this application;

[0101] Figure 16 is a three-dimensional structural diagram of a heat transfer label and label roll provided in another embodiment of this application;

[0102] Figure 17 is a schematic diagram of the connection between the fourth adhesive layer and the release paper according to an embodiment of this application;

[0103] Figure 18 is a schematic diagram of the connection between the fourth adhesive layer and the release paper according to another embodiment of this application;

[0104] Figure 19 is a schematic diagram of the structure of two adjacent heat transfer labels connected according to another embodiment of this application;

[0105] Figure 20 is a schematic diagram of the structure of two adjacent heat transfer labels connected according to another embodiment of this application;

[0106] Figure 21 is a schematic diagram of the structure of a heat transfer label according to an embodiment of this application;

[0107] Figure 22 is a schematic diagram of the label roll structure according to an embodiment of this application;

[0108] Figure 23 is a schematic diagram of the structure of the bottom release layer provided in an embodiment of this application;

[0109] Figure 24 is a schematic diagram of the structure of a heat transfer label according to another embodiment of this application;

[0110] Figure 25 is a schematic diagram of the structure of a heat transfer label according to another embodiment of this application;

[0111] Figure 26 is a schematic diagram of the connection between the heat transfer label and the adhesive roller according to an embodiment of this application;

[0112] Figure 27 is a schematic diagram of the label roll structure according to another embodiment of this application;

[0113] Figure 28 is a schematic diagram of the structure of the release paper according to an embodiment of this application;

[0114] Figure 29 is a three-dimensional structural schematic diagram of a heat transfer label provided in an embodiment of this application;

[0115] Figure 30 is a cross-sectional view of a heat transfer label provided in an embodiment of this application;

[0116] Figure 31 is a three-dimensional structural diagram of a heat transfer label provided in another embodiment of this application;

[0117] Figure 32 is a schematic diagram of the connection between the release paper and the fourth adhesive layer according to an embodiment of this application;

[0118] Figure 33 is a schematic diagram of the connection between the release paper and the fourth adhesive layer according to another embodiment of this application;

[0119] Figure 34 is a schematic diagram of the structure of two adjacent heat transfer labels connected according to an embodiment of this application;

[0120] Figure 35 is a schematic diagram of the structure of two adjacent heat transfer labels connected according to another embodiment of this application. Detailed Implementation

[0121] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0122] To address the technical problem in existing thermal transfer labels where printed or handwritten content is exposed on the label surface, making the label susceptible to corrosion from air, water, oil, and other substances, thus affecting the display of the label content, this application provides a thermal transfer label that can cover the printing unit with a protective layer to isolate it from air, water, oil, and other substances, thereby protecting the printing unit.

[0123] Example 1

[0124] Please refer to Figure 1, which is a schematic diagram of the structure of a heat transfer label in one embodiment of this application. The heat transfer label 100 includes a base release layer 1, a laminating unit 2, and a printing unit 3. The laminating unit 2 includes a protective layer 22, which can be, for example, a transparent PET film. The protective layer 22 is disposed on the base release layer 1 and is detachably connected to it. One side of the printing unit 3 is detachably connected to the base release layer 1, and the other side of the printing unit 3 is used to print information, which can be text, numbers, or patterns. The printing unit 3 can be combined with the side of the laminating unit 2 opposite to the base release layer 1 to cover the printing unit 3 with the protective layer 22. Specifically, the base release layer 1 can be folded in half to combine the laminating unit 2 with the printing unit 3, or the base release layer 1 can be broken so that the laminating unit 2 and the printing unit 3 are not located on the same base release layer 1, and then the protective layer 22 can be covered with the printing unit 3.

[0125] In one embodiment, referring to Figure 1, the release layer 1 has a symmetrically arranged coating area 11 and printing area 12. The coating unit 2 further includes a first adhesive layer 21 and a second adhesive layer 23. The first adhesive layer 21, the protective layer 22, and the second adhesive layer 23 are stacked sequentially, and the first adhesive layer 21 adheres to the coating area 11. The printing unit 3 includes a third adhesive layer 31 and a label layer 32. The third adhesive layer 31 adheres to the printing area 12. One side of the label layer 32 is adhered to the third adhesive layer 31, and the other side of the label layer 32 can be bonded to the side of the second adhesive layer 23 opposite to the protective layer 22.

[0126] In this embodiment, the laminating unit 2 is detachably disposed in the laminating area 11 via the first adhesive layer 21, and the printing unit 3 is detachably disposed in the printing area 12 via the third adhesive layer 31. When the release layer 1 is folded over to combine the laminating area 11 and the printing area 12, the laminating unit 2 and the printing unit 3 can be stacked together. The label layer 32 can be connected to the second adhesive layer 23 when the laminating area 11 and the printing area 12 are folded together. At this time, the protective layer 22 covers the label layer 32 and can protect the label layer 32. The label layer 32 can be customized with identification information that combines text, patterns, and colors to facilitate identification.

[0127] In one embodiment, the first adhesive layer 21 is AB double-sided adhesive, with different adhesive strengths on both sides. The side with stronger adhesiveness is bonded to the film-coated area 11, and the side with weaker adhesiveness is bonded to the protective layer 22. When the bottom release layer 1 is flipped and folded, it needs to be peeled off. During the peeling process, because the side with stronger adhesiveness is bonded to the film-coated area 11 (bottom release layer 1), the bottom release layer 1 can easily pull the AB double-sided adhesive away from the protective layer 22.

[0128] In one embodiment, the adhesive force between the third adhesive layer 31 and the label layer 32 is greater than the adhesive force between the third adhesive layer 31 and the backing release layer 1. In this embodiment, when the laminating area 11 and the printing area 12 are folded together, the laminating unit 2 and the printing unit 3 combine. It is necessary to first peel the backing release layer 1 away from the third adhesive layer 31 and then adhere the third adhesive layer 31 to the label mounting position. In this embodiment, the adhesive force between the third adhesive layer 31 and the label layer 32 is greater than the adhesive force between the third adhesive layer 31 and the backing release layer 1. Therefore, during the process of peeling the backing release layer 1 away from the third adhesive layer 31, the third adhesive layer 31 will not detach from the label layer 32, allowing the label layer 32 to be adhered to the label mounting position via the third adhesive layer 31.

[0129] In one embodiment, the protective layer 22 is a transparent PET film. The transparent PET film does not affect the visibility of the label layer 32. The PET film also has good heat resistance, cold resistance, corrosion resistance and oil resistance, which can provide stable protection for the label layer 32 so that the label layer 32 can be used for a long time.

[0130] In one embodiment, both the second adhesive layer 23 and the third adhesive layer 31 are pressure-sensitive adhesives. The pressure-sensitive adhesive of the second adhesive layer 23 is mainly used to connect the protective layer 22 to the label layer 32 after the bottom release layer 1 is flipped and folded, so that the protective layer 22 can protect the label layer 32. The pressure-sensitive adhesive of the third adhesive layer 31 is mainly used to adhere to a fixed mounting position after the bottom release layer 1 is peeled off, such as on the product surface or a wall.

[0131] In one embodiment, referring to FIG. 1, the printing unit 3 further includes a printed pattern layer 33. The printed pattern layer 33 is adhered to the side of the label layer 32 facing away from the third adhesive layer 31. The printed pattern layer 33 can connect to the second adhesive layer 23 when the laminating area 11 and the printing area 12 are folded together, so that the protective layer 22 covers the printed pattern layer 33, forming a protective layer for both the printed pattern layer 33 and the label layer 32. In this embodiment, the printed pattern layer 33 can be a transparent sticker with a pattern, used to connect and bond with the label layer 32, adding information elements to the label layer 32 for better label identification. Alternatively, the printed pattern layer 33 can also be a handwritten sticker, allowing information to be added to the printed pattern layer 33 by handwriting, accommodating the need for handwritten labels before lamination, and increasing the flexibility of use.

[0132] In one embodiment, referring to Figure 4, the release layer 1 has a fold-off tear line 13, and the film-coated area 11 and the printing area 12 are symmetrical about the fold-off tear line 13. In this embodiment, by providing the fold-off tear line 13, the film-coated area 11 and the printing area 12 of the release layer 1 can be easily folded over and flipped together, so that the film-coated area 11 and the printing area 12 are combined, and the film-coated unit 2 and the printing unit 3 are attached together.

[0133] In one embodiment, referring to FIG1, the coating unit 2 further includes a release paper 24, which is attached to the side of the second adhesive layer 23 facing away from the protective layer 22. In this embodiment, by providing the release paper 24 to cover the second adhesive layer 23, the second adhesive layer 23 is protected, preventing the second adhesive layer 23 from coming into contact with too much dust before use, which would weaken its adhesiveness.

[0134] Further, referring to Figure 2, one end of the release paper 24 is not covered by the second adhesive layer 23, while the other end of the release paper 24 is completely adhered to the second adhesive layer 23. In this embodiment, the area of ​​the release paper 24 is slightly smaller than the area of ​​the second adhesive layer 23 so that the release paper 24 can be quickly torn off to detach from the second adhesive layer 23.

[0135] In another embodiment, referring to Figure 3, the release paper 24 includes a non-connected first portion 241 and a second portion 242, which together cover all parts of the second adhesive layer 23. This embodiment can be understood as the first portion 241 and the second portion 242 being separated by a solid slit line 243. Compared to the previous embodiment, this embodiment only adds a second portion 242. The first portion 241 of this embodiment can be considered as the release paper 24 of the previous embodiment. The second portion 242 completely covers the uncovered parts of the second adhesive layer 23 in the previous embodiment, thereby improving the protection of the second adhesive layer 23. All parts of the second adhesive layer 23 will not come into contact with dust before use, maintaining good adhesion, and also making the release paper 24 easy to tear.

[0136] Please refer to Figure 4. This application also provides a label roll 200, including a roller 4 and a plurality of the above-mentioned heat transfer labels 100. The plurality of heat transfer labels 100 are connected in sequence by tear lines 5 and wound around the roller 4 so that the label roll 200 can store a plurality of heat transfer labels 100. When using the heat transfer labels 100, it is only necessary to tear open the tear lines 5 between adjacent heat transfer labels 100 or cut them with scissors, which is convenient to use.

[0137] To better understand this application, the technical solution of this application will be described in detail below with reference to Figures 1 to 4:

[0138] In use, the heat transfer label 100 of this application is first removed by peeling off the release paper 24 to expose the second adhesive layer 23. The backing release layer 1 is then folded in half to bond the second adhesive layer 23 to the printed pattern layer 33. The laminating unit 2 and the printing unit 3 are then stacked together. Next, the backing release layer 1 is completely peeled off, causing the first adhesive layer 21 to detach from the protective layer 22, exposing the protective layer 22. The printed pattern layer 33 and the label layer 32 covered by the protective layer 22 can be clearly seen through it. Finally, the third adhesive layer 31 is pasted into the mounting position to complete the installation of the heat transfer label. It should be emphasized that before labeling, one or more layers of the printed pattern layer 33 can be selectively applied to the label layer 32, or the printed pattern layer 33 can be left unapplied, accommodating lamination requirements and offering flexible options.

[0139] Example 2

[0140] Please refer to Figures 5 to 11. Figures 5 and 6 are schematic diagrams of the structure of a heat transfer label in one embodiment of this application. The heat transfer label includes at least one printing unit 1. The printing unit 1 includes a backing release layer 11, a label layer 12, and a protective layer 13. The backing release layer 11 includes a printing area 111 and a laminating area 112. A fold line 113 is formed between the printing area 111 and the laminating area 112. The label layer 12 is stacked on the backing release layer 11 and disposed in the printing area 111. The protective layer 13... Layer 13 is stacked on the bottom release layer 11 and located in the lamination area 112. The protective layer 13 can be folded along the fold line 113 to cover and adhere to the label layer 12. The printing area 111 and the lamination area 112 are separated along the fold line 113, which can cause one of the printing area 111 and the lamination area 112 to separate from the label layer 12 or the protective layer 13 disposed thereon, and leave the other of the printing area 111 and the lamination area 112 on the corresponding label layer 12 or the protective layer 13.

[0141] In this device, at least one printing unit 1 is provided on the printing paper. The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The bottom release layer 11 has a printing area 111, a laminating area 112, and a fold line 113. The printing area 111 and the laminating area 112 are distributed on both sides of the fold line 113. The label layer 12 and the protective layer 13 are respectively provided on the printing area 111 and the laminating area 112. The protective layer 13 can be folded along the fold line 113 to cover and stick to the label layer 12. The printing area 111 and the laminating area 112 are separated along the fold line 113, which can cause one of the printing area 111 and the laminating area 112 to separate from the protective layer 13 or the label layer 12 provided thereon, and leave the other of the printing area 111 and the laminating area 112 on the corresponding protective layer 13 or the label layer 12.

[0142] Compared to existing technologies, after the printing area 111 and the laminating area 112 of the bottom release layer 11 are folded in half, the protective layer 13 can be folded in half and laminated onto the label layer 12. When the bottom release layer 11 is cut along the fold line 113 and the printing area 111 and the laminating area 112 are separated, the bottom release layer 11 can be separated from the protective layer 13 or the label layer 12 in the same way, while ensuring that the protective layer 13 is still adhered to the label layer 12. This combines the two steps of separating part of the release paper layer from the protective layer 13 and cutting part of the release paper layer from the label paper in the operation steps, simplifying the operation steps and making it convenient to use. It can solve the technical problem in the existing technology that the operation steps are complicated because it is necessary to separate part of the release paper layer from the protective layer 13, cut part of the release paper layer from the label paper and separate the remaining part of the release paper layer from the printed information 14 in sequence.

[0143] Furthermore, in this device, the label layer 12 or the protective layer 13 can be respectively disposed on the printing area 111 or the laminating area 112, that is, when the label layer 12 is disposed on the printing area 111, the protective layer 13 is disposed on the laminating area 112, or when the protective layer 13 is disposed on the printing area 111, the label layer 12 is disposed on the laminating area 112. Further details will not be elaborated here.

[0144] In this embodiment, as shown in FIG6, the fold line 113 is set at the center line of the bottom release layer 11. The printing area 111 and the film coating area 112 are connected by the fold line 113 and are symmetrically distributed left and right or up and down along the fold line 113 as the axis.

[0145] The fold line 113 connects the printing area 111 and the laminating area 112, and also facilitates folding the printing area 111 and the laminating area 112 to make it easier for the protective layer 13 to cover the label layer 12. It also makes it easier for the user to separate the printing area 111 and the laminating area 112.

[0146] Furthermore, as shown in Figure 5, the label layer 12 and the protective layer 13 are symmetrically distributed from left to right along the fold line 113, and as shown in Figure 7, the label layer 12 and the protective layer 13 are symmetrically distributed from top to bottom along the fold line 113.

[0147] Furthermore, as shown in Figure 8, the length direction of the label layer 12 and the protective layer 13 can be set to be consistent with the length direction of the printing unit 1 winding, or as shown in Figure 9, the width direction of the label layer 12 and the protective layer 13 can be set to be consistent with the length direction of the printing unit 1 winding.

[0148] In this embodiment, as shown in FIG6, the printing unit 1 further includes a fourth adhesive layer 15, a fifth adhesive layer 16, a sixth adhesive layer 17, and release paper 18.

[0149] The label layer 12 is used to add printing information 14 on the side opposite to the release layer 11. The fourth adhesive layer 15 is bonded to the protective layer 13 on one side and to the label layer 12 on the other side, so that the protective layer 13 can cover and bond the printing information 14. The bonding strength between the fourth adhesive layer 15 and the protective layer 13 or the printing information 14 layer is such that when the printing area 111 and the film-coated area 112 are separated along the fold line 113, the protective layer 13 and the printing information 14 layer are always attached together.

[0150] The label layer 12 is attached to the side opposite to the release layer 11 for attaching the printed information 14. The fourth adhesive layer 15 is connected to the protective layer 13 to achieve bonding between the protective layer 13, the adhesive layer, the printed information 14 and the label layer 12, and to form a protective film for the printed information 14.

[0151] Furthermore, the bonding strength between the fourth adhesive layer 15 and the protective layer 13 or the printed information 14 is such that when the printing area 111 and the film-coated area 112 are separated along the fold line 113, the protective layer 13 and the label layer 12 remain attached together, thereby preventing accidental separation after the protective layer 13, adhesive layer, printed information 14 and label layer 12 are formed as a whole.

[0152] In one embodiment, referring to FIG6, the fifth adhesive layer 16 is disposed between the label layer 12 and the bottom release layer 11. The two sides of the fifth adhesive layer 16 are respectively bonded to the label layer 12 and the bottom release layer 11, and the bonding strength between the fifth adhesive layer 16 and the bottom release layer 11 is such that when the printing area 111 and the film coating area 112 are separated along the fold line 113, the label layer 12 can be separated from the bottom release layer 11.

[0153] The fifth adhesive layer 16 is used to bond the bottom release layer 11 to the label layer 12.

[0154] Furthermore, the bonding strength between the fifth adhesive layer 16 and the bottom release layer 11 is sufficient to allow the label layer 12 to separate from the bottom release layer 11 when the printing area 111 and the film-coated area 112 are separated along the fold line 113, which facilitates user operation and simplifies the operation steps.

[0155] In one embodiment, both the fourth adhesive layer 15 and the fifth adhesive layer 16 are pressure-sensitive adhesives.

[0156] The pressure-sensitive adhesive of the fourth adhesive layer 15 is mainly used to connect the protective layer 13 to the printed information 14 and the label layer 12 after the bottom release layer 11 is flipped and folded, so that the protective layer 13 can protect the printed information layer 14 and the label layer 12. The pressure-sensitive adhesive of the fifth adhesive layer 16 is mainly used to adhere to a fixed installation position after the bottom release layer 11 is peeled off, such as on the product surface or wall.

[0157] Furthermore, the pressure-sensitive adhesive used here is a standard feature known to those skilled in the art, and will not be described in detail further.

[0158] In one embodiment, referring to FIG6, the sixth adhesive layer 17 is disposed between the protective layer 13 and the bottom release layer 11. The two sides of the sixth adhesive layer 17 are respectively bonded to the protective layer 13 and the bottom release layer 11, and the bonding strength between the sixth adhesive layer 17 and the bottom release layer 11 is such that when the printing area 111 and the film coating area 112 are separated along the fold line 113, the sixth adhesive layer 17 always remains on the bottom release layer 11.

[0159] The sixth adhesive layer 17 is used to bond the bottom release layer 11 to the protective layer 13.

[0160] Furthermore, the bonding strength between the sixth adhesive layer 17 and the bottom release layer 11 is such that when the printing area 111 and the film-coated area 112 are separated along the fold line 113, the sixth adhesive layer 17 always remains on the bottom release layer 11, which can prevent accidental separation between the protective layer 13, the fourth adhesive layer 15, the printed information 14 and the label layer 12, and can also prevent the sixth adhesive layer 17 from remaining on the protective layer 13.

[0161] In one embodiment, the sixth adhesive layer 17 is an AB double-sided adhesive, and the adhesive strength between the sixth adhesive layer 17 and the protective layer 13 is less than the adhesive strength between the sixth adhesive layer 17 and the bottom release layer 11, so that when the bottom release layer 11 separates from the protective layer 13, the sixth adhesive layer 17 separates from the protective layer 13 along with the bottom release layer 11.

[0162] The bonding strength between the sixth adhesive layer 17 and the protective layer 13 is less than the bonding strength between the sixth adhesive layer 17 and the bottom release layer 11, which is beneficial to peel the sixth adhesive layer 17 off the protective layer 13 when separating the printing area 111 and the film coating area 112 of the bottom release layer 11 from the protective layer 13.

[0163] Furthermore, the use of AB double-sided tape is a standard setup known to those skilled in the art, and will not be elaborated upon further.

[0164] In one embodiment, referring to FIG6, release paper 18 covers the fourth adhesive layer 15.

[0165] Release paper 18 is used to protect the fourth adhesive layer 15 and prevent the fourth adhesive layer 15 from coming into contact with too much dust before use, which would weaken its adhesiveness.

[0166] In one embodiment, as shown in Figures 5 and 10, the release paper 18 includes a first segment 181 and a second segment 182, which are separated and can jointly cover all parts of the fourth adhesive layer 15.

[0167] The release paper 18 is composed of a first segment 181 and a second segment 182, which are disconnected from each other. Alternatively, it can be understood that the first segment 181 and the second segment 182 are separated by a solid slit line. The first segment 181 and the second segment 182 together cover all parts of the fourth adhesive layer 15, which makes it easy to separate the release paper 18 from the fourth adhesive layer 15.

[0168] Furthermore, as shown in Figure 10, one end of the release paper 18 may not cover the fourth adhesive layer 15, while the other end of the release paper 18 may be completely attached to the fourth adhesive layer 15. That is, in this embodiment, the area of ​​the release paper 18 is slightly smaller than the area of ​​the fourth adhesive layer 15, so that the release paper 18 can be quickly torn off to detach from the fourth adhesive layer 15.

[0169] In one embodiment, the protective layer 13 is a transparent PET film.

[0170] The transparent PET film does not affect the visibility of the label layer 12. The PET film also has good heat resistance, cold resistance, corrosion resistance and oil resistance, which can provide stable protection for the label layer 12, so that the label layer 12 can be used for a long time. The PET film here is a conventional setting known to those skilled in the art, and will not be described in detail.

[0171] In one embodiment, as shown in FIG11, the release paper 18 is elongated, and the first segment 181 and the second segment 182 are separated along the length direction of the release paper 18.

[0172] The release paper 18 is long and narrow, with the first segment 181 and the second segment 182 separated along the length of the release paper 18. This prevents the tension generated when separating the first segment 181 or the second segment 182 from the fourth adhesive layer 15 from acting on the fold line 113, thereby reducing the impact of separating the first segment 181 or the second segment 182 from the fourth adhesive layer 15 on the connection between the printing area 111 and the laminating area 112, and avoiding accidental separation of the printing area 111 and the laminating area 112.

[0173] In this embodiment, as shown in Figures 7 to 9, the number of printing units 1 in the thermal transfer label is multiple. The thermal transfer label also includes connecting lines 2, which are disposed between two adjacent printing units 1 and connected to both adjacent printing units 1, so that the printing areas 111 or coating areas 112 of the multiple printing units 1 are alternately arranged in sequence along the winding direction or the printing areas 111 or coating areas 112 of the multiple printing units 1 are arranged side by side along the direction perpendicular to the winding direction.

[0174] The two adjacent printing units 1 are connected by a connecting line 2 to achieve an easy-tear connection structure.

[0175] Furthermore, the printing areas 111 or coating areas 112 of the multiple printing units 1 are arranged alternately in sequence along the winding direction, or the printing areas 111 or coating areas 112 of the multiple printing units 1 are arranged side by side along the direction perpendicular to the winding direction.

[0176] Furthermore, multiple printing units 1 are sequentially connected and wound onto the roller 3 to form a complete thermal transfer label. This is a conventional setup known to those skilled in the art and will not be described in detail here.

[0177] In one embodiment, the connection strength between the connecting line 2 and the two printing units 1 is such that when the two printing units are disconnected along the connecting line 2, the printing area 111 and the coating area 112 remain connected.

[0178] The connection strength between the connecting line 2 and the two printing units 1 is sufficient to ensure that the printing area 111 and the laminating area 112 remain connected when the two printing units are disconnected along the connecting line 2, thus preventing accidental separation of the printing area 111 and the laminating area 112 of the release layer 11 when the printing unit 1 is pulled off the printing paper.

[0179] Furthermore, both the fold line 113 and the connecting line 2 are dashed disconnected. The fold line 113 and the connecting line 2 are conventional settings known to those skilled in the art, and will not be described in detail here.

[0180] To better understand this application, the technical solution of this application will be described in detail below with reference to Figures 5 to 11:

[0181] At least one printing unit 1 is provided on the printing paper. The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The bottom release layer 11 has a printing area 111, a laminating area 112, and a fold line 113. The printing area 111 and the laminating area 112 are distributed on both sides of the fold line 113. The label layer 12 and the protective layer 13 are respectively provided on the printing area 111 and the laminating area 112. The protective layer 13 can be folded along the fold line 113 to cover and stick to the label layer 12. The printing area 111 and the laminating area 112 are separated along the fold line 113, which can cause one of the printing area 111 and the laminating area 112 to separate from the label layer 12 or the protective layer 13 provided thereon, and leave the other of the printing area 111 and the laminating area 112 on the corresponding label layer 12 or the protective layer 13. Compared to existing technologies, after the printing area 111 and the laminating area 112 of the bottom release layer 11 are folded in half, the protective layer 13 can be folded in half and laminated onto the label layer 12. When the bottom release layer 11 is cut along the fold line 113 and the printing area 111 and the laminating area 112 are separated, the bottom release layer 11 can be separated from the protective layer 13 or the label layer 12, while ensuring that the protective layer 13 is still adhered to the label layer 12. This combines the two steps of separating part of the release paper layer from the protective layer 13 and cutting part of the release paper layer from the label paper, simplifying the operation and making it more convenient to use.

[0182] In the specific workflow of this application, the printing unit 1 is first divided by the connecting line 2. Then, the release paper 18 is peeled off from the protective layer 13. Next, the bottom release layer 11 is folded along the fold line 113, so that the protective layer 13 is connected to the printed information 14 and the label layer 12 via the fourth adhesive layer 15. Finally, the printing area 111 and the laminating area 112 of the bottom release layer 11 are separated. During the separation process, the printing area 111 of the bottom release layer 11 can be separated from the label layer 112 after lamination or the laminating area 112 can be separated from the protective layer 113 after lamination. This makes it easy to stick the printed and laminating label layer 12 onto the product, which simplifies the operation steps and makes it convenient to use.

[0183] This device, through the above structure, can solve the technical problem in the prior art that the operation steps are complicated because it requires the sequential separation of part of the release paper layer from the protective layer 13, the cutting of part of the release paper layer from the label paper, and the separation of the remaining release paper layer from the printed information 14.

[0184] Example 3

[0185] Please refer to Figures 12 to 20. Figures 12 and 13 are schematic diagrams of the structure of printing paper and thermal transfer label in one embodiment of this application. The printing paper includes at least one printing unit 1. The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The bottom release layer 11 includes a printing area 111 and a laminating area 112. A fold line 113 is formed between the printing area 111 and the laminating area 112. The label layer 12 is stacked on the bottom release layer 11 and disposed on the label layer 12. The printing area 111 has a protective layer 13 stacked on the bottom release layer 11 and located in the film coating area 112. The protective layer 13 is also provided with a fourth adhesive layer 15 on the side opposite to the bottom release layer 11. The fourth adhesive layer 15 is used to bond to the label layer 12 and the protective layer 13 respectively. The edge of the fourth adhesive layer 15 is spaced apart from the edge of the bottom release layer 11. The protective layer 13 can be pasted to the label layer 12 through the fourth adhesive layer 15 when the bottom release layer 11 is folded along the fold line 113.

[0186] In this device, the printing paper includes at least one printing unit 1. The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The bottom release layer 11 is provided with a printing area 111 and a laminating area 112. A fold line 113 is formed between the printing area 111 and the laminating area 112. The label layer 12 and the protective layer 13 are respectively disposed on the printing area 111 and the laminating area 112. The protective layer 13 is also provided with a fourth adhesive layer 15 on the side away from the bottom release layer 11 for bonding with the label layer 12 and the protective layer 13 respectively. The edge of the fourth adhesive layer 15 is spaced apart from the edge of the bottom release layer 11. The protective layer 13 can be bonded to the label layer 12 through the fourth adhesive layer 15 when the bottom release layer 11 is folded along the fold line 113.

[0187] Compared to existing technologies, by providing a fourth adhesive layer 15 on the protective layer 13, the protective layer 13 can be adhered to the label layer 12 for coating protection of the label layer 12. At the same time, a gap area 114 for the user to hold is formed between the edge of the fourth adhesive layer 15 and the edge of the bottom release layer 11, avoiding direct contact between the hand and the adhesive layer on the protective layer 13 or the label layer 12, and avoiding the influence of dust or hands on the stickiness of the hot melt adhesive layer. This solves the technical problem in existing technologies where fingers can easily come into contact with the adhesive, affecting the adhesiveness of the adhesive and thus affecting the bonding effect between the coating area and the printing area, resulting in a decrease in the protective effect of the coating area on the printing area.

[0188] Furthermore, the side of the label layer 12 facing away from the release layer 11 is used to add printed information 14, and the protective layer 13 and the fourth adhesive layer 15 can be bonded to the label layer 12 to form protection for the printed information 14.

[0189] In this embodiment, as shown in FIG12, at least one edge of the label layer 12 is spaced apart from the edge of the bottom release layer 11.

[0190] At least one side of the label layer 12 also has a gap area 114. Not only the protective layer 13, but also the label layer 12 has a gap area 114 to facilitate the user's hand holding. It can be understood that if the label layer 12 does not have a handhold, the direct contact of the hand with the label layer 12 will also affect the adhesion between the label layer 12 and the protective layer 13.

[0191] Specifically, the label layer 12 has spacing areas 114 on all four sides to facilitate user operation.

[0192] In this embodiment, in the arrangement direction of the label layer 12 and the protective layer 13, the distance between the edge of the fourth adhesive layer 15 and the edge of the bottom release layer 11 is greater than the distance between the edge of the label layer 12 and the edge of the bottom release layer 11.

[0193] Compared to the label layer 12 side, fingers are more likely to contaminate and affect the fourth adhesive layer 15 side. Therefore, the distance between the edge of the fourth adhesive layer 15 and the edge of the bottom release layer 11 is greater than the distance between the edge of the label layer 12 and the edge of the bottom release layer 11, which can reduce the impact of fingers on the bonding and protection effect.

[0194] In one embodiment, after the bottom release layer 11 is folded along the fold line 113, the edge of the protective layer 13 does not exceed the edge of the label layer 12.

[0195] After the label layer 12 is affixed to the item and after prolonged use, the protective layer 13 is prone to detaching from the label layer 12 by extending beyond it. The larger the protective layer 13 is, the larger the corresponding adhesive layer becomes. With a fixed label size, a smaller blank area makes it inconvenient for the user to hold and more susceptible to contamination.

[0196] Furthermore, if the edge of the protective layer 13 extends beyond the edge of the label layer 12 after folding, the protective layer 13 may curl up, thus affecting the effect of the label paper being attached to the product.

[0197] In one embodiment, the distance between the label layer 12 and the protective layer 13 in their arrangement direction is greater than three times the sum of the thicknesses of the label layer 12 and the protective layer 13, but less than 10 mm.

[0198] The spacing between the label layer 12 and the protective layer 13 must be greater than the sum of the thicknesses of the label layer 12, the fourth adhesive layer 15, and the protective layer 13 to ensure that the two can be folded together and accommodate each other.

[0199] In a preferred embodiment, the distance between the label layer 12 and the protective layer 13 in their arrangement direction is greater than three times the sum of the thicknesses of the label layer 12 and the protective layer 13, but less than 10 mm. This allows for a reasonable spacing, making it convenient for the user to hold the label layer 12 without creating an excessive gap area 114 that would waste paper. If the distance between the label layer 12 and the protective layer 13 in their arrangement direction is too large, such as greater than 10 mm, misalignment may occur when the label layer 12 and the protective layer 13 are folded, making it difficult for the protective layer 13 to accurately cover the label layer 12.

[0200] Furthermore, the width of the interval region 114 is 1mm, 1.5mm, 2mm, 3mm, 5mm, 8mm, or 10mm, with 1.5mm being a preferred width.

[0201] In this embodiment, as shown in FIG12, the surface of the protective layer 13 is further provided with release paper 18, which is connected to the protective layer 13 via the fourth adhesive layer 15 to protect the fourth adhesive layer 15.

[0202] Release paper 18 is used to protect the fourth adhesive layer 15 and prevent the fourth adhesive layer 15 from coming into contact with too much dust before use, which would weaken its adhesiveness.

[0203] In one embodiment, as shown in FIG12, the release paper 18 includes a first portion 181 and a second portion 182, the first portion 181 and the second portion 182 being separated and capable of jointly covering all portions of the fourth adhesive layer 15.

[0204] The disconnection of the first part 181 and the second part 182 allows the user to easily separate the first part 181 or the second part 182 from the fourth adhesive layer 15, making operation convenient.

[0205] Furthermore, as shown in Figure 17, one end of the release paper 18 may not cover the fourth adhesive layer 15, while the other end of the release paper 18 may be completely attached to the fourth adhesive layer 15. That is, in this embodiment, the area of ​​the release paper 18 is slightly smaller than the area of ​​the fourth adhesive layer 15, so that the release paper 18 can be quickly torn off to detach from the fourth adhesive layer 15.

[0206] In one embodiment, the protective layer 13 is a transparent PET film.

[0207] The transparent PET film does not affect the visibility of the label layer 12. The PET film also has good heat resistance, cold resistance, corrosion resistance and oil resistance, which can provide stable protection for the label layer 12, so that the label layer 12 can be used for a long time. The PET film here is a conventional setting known to those skilled in the art, and will not be described in detail.

[0208] In one embodiment, as shown in FIG12, the release paper 18 is elongated, with a first portion 181 and a second portion 182 separated along the length of the release paper 18.

[0209] As shown in Figure 12, the release paper 18 is long and narrow. The first part 181 and the second part 182 are separated along the length of the release paper 18, which makes it easy to peel the first part 181 or the second part 182 off the fourth adhesive layer 15. That is, when peeling off the first part 181 or the second part 182, you only need to tear the width of the release paper 18, which is convenient for operation.

[0210] Furthermore, as shown in Figure 18, the arrangement of the first part 181 and the second part 182 can also be separated along the width direction of the release paper 18.

[0211] In one embodiment, the ratio of the area occupied by the first part 181 to the area occupied by the second part 182 is 1:2 to 1:10.

[0212] As shown in Figure 12, by setting the first part 181 and the second part 182 with an area ratio of 1:2 to 1:10, the contamination of the fourth adhesive layer 15 can be reduced and the adhesive effect can be improved. It can be understood that if the first part 181 is torn off first and then the second part 182 is torn off, the second part 182 with a larger area will be exposed to the air for a shorter time, so the probability of being contaminated will be smaller, thereby further improving the adhesive effect.

[0213] In one embodiment, the distance between the edge of the fourth adhesive layer 15 and the edge of the bottom release layer 11 ranges from 1 to 8 mm.

[0214] Ideally, the distance between the edge of the fourth adhesive layer 15 and the edge of the bottom release layer 11 is 1mm, 1.5mm, 5mm, or 8mm, with 1.5mm being the preferred value.

[0215] In this embodiment, as shown in FIG13, the fold line 113 is set at the center line of the bottom release layer 11, and the printing area 111 and the film coating area 112 are symmetrically distributed on the left and right or on the top and bottom along the fold line 113 as the axis of symmetry.

[0216] The printing area 111 and the laminating area 112 are symmetrically distributed along the fold line 113 as the axis, which allows the protective layer 13 to better cover the label layer 12, while facilitating the separation of the printing area 111 and the laminating area 112.

[0217] As shown in Figure 14, the printing area 111 and the laminating area 112 are symmetrically distributed along the fold line 113, so that the label layer 12 and the protective layer 13 can be symmetrically distributed along the length of the printing paper. As shown in Figure 15, the printing area 111 and the laminating area 112 are symmetrically distributed along the fold line 113, so that the label layer 12 and the protective layer 13 are symmetrically distributed along the length of the printing paper.

[0218] Furthermore, as shown in Figure 16, the length direction of the label layer 12 and the protective layer 13 can be set to be consistent with the length direction of the printing unit 1 winding, or as shown in Figure 15, the width direction of the label layer 12 and the protective layer 13 can be set to be consistent with the length direction of the printing unit 1 winding.

[0219] In one embodiment, as shown in FIG13, the printing unit 1 further includes a fifth adhesive layer 16, which is disposed between the label layer 12 and the bottom release layer 11. The two sides of the fifth adhesive layer 16 are respectively bonded to the label layer 12 and the bottom release layer 11, and the bonding strength between the fifth adhesive layer 16 and the bottom release layer 11 is sufficient to keep the protective layer 13 and the label layer 12 bonded when the label layer 12 and the bottom release layer 11 are separated.

[0220] The fifth adhesive layer 16 is used to bond the bottom release layer 11 to the label layer 12.

[0221] Furthermore, the adhesive strength between the fifth adhesive layer 16 and the bottom release layer 11 is less than the adhesive strength between the fourth adhesive layer 15 and the protective layer 13 and the label layer 12, so that when the bottom release layer 11 is separated from the label layer 12, the fifth adhesive layer 16 is pasted onto the label layer 12, while the protective layer 13 is prevented from separating from the label layer 12.

[0222] Furthermore, in this device, the fourth adhesive layer 15 and the fifth adhesive layer 16 are both pressure-sensitive adhesives. Pressure-sensitive adhesives are a conventional feature known to those skilled in the art and will not be described in detail here.

[0223] In one embodiment, as shown in FIG13, the printing unit 1 further includes a sixth adhesive layer 17, which is disposed between the protective layer 13 and the bottom release layer 11. The sixth adhesive layer 17 is AB double-sided adhesive. Both sides of the sixth adhesive layer 17 are bonded to the protective layer 13 and the bottom release layer 11 respectively. The adhesive strength of the sixth adhesive layer 17 is such that when the protective layer 13 and the bottom release layer 11 are separated, the fourth adhesive layer 15 always keeps the protective layer 13 and the label layer 12 in an adhesive state, and the sixth adhesive layer 17 remains on the bottom release layer.

[0224] The sixth adhesive layer 17 is used to bond the printing area 111 or the film coating area 112 of the bottom release layer 11 to the protective layer 13.

[0225] Furthermore, the adhesive strength between the sixth adhesive layer 17 and the protective layer 13 is less than the adhesive strength between the sixth adhesive layer 17 and the bottom release layer 11, so that when the bottom release layer 11 is separated from the protective layer 13, the fifth adhesive layer 16 is also torn off, while the protective layer 13 is prevented from separating from the label layer 12.

[0226] Furthermore, the use of AB double-sided tape is a standard setup known to those skilled in the art, and will not be elaborated upon further.

[0227] In this embodiment, as shown in Figures 12 to 16, the number of printing units 1 in the printing paper is multiple. The printing paper also includes connecting lines 2, which are disposed between two adjacent printing units 1 and connected to both adjacent printing units 1, as shown in Figures 15 and 16. This allows the printing areas 111 or coating areas 112 of the multiple printing units 1 to be alternately arranged sequentially along the winding direction, or as shown in Figures 12 and 14, the printing areas 111 or coating areas 112 of the multiple printing units 1 are arranged side by side along a direction perpendicular to the winding direction.

[0228] The two adjacent printing units 1 are connected by a connecting line 2 to achieve an easy-tear connection structure.

[0229] Furthermore, the printing areas 111 or coating areas 112 of the multiple printing units 1 are arranged alternately in sequence along the winding direction, or the printing areas 111 or coating areas 112 of the multiple printing units 1 are arranged side by side along the direction perpendicular to the winding direction.

[0230] In one embodiment, as shown in Figures 19 and 20, the connecting line 2 is dotted to form a point-to-point connection between two adjacent printing units 1.

[0231] By connecting two adjacent printing units 1 through a point-to-point connection method, users can easily separate the unit to be printed 1 and the printed unit 1 after printing is completed.

[0232] Furthermore, both the fold line 113 and the connecting line 2 are dashed connection structures, which are used to facilitate cutting by the user. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0233] Specifically, as shown in Figures 19 and 20, the two adjacent printing units 1 in this device are connected by an inverted triangle or a horizontal bracket-shaped connection structure, so that the two adjacent printing units 1 only need to overcome the point-to-point connection and can be easily broken, which makes it convenient for users to operate.

[0234] This application also provides a thermal transfer label, including a roller 3 and printing paper, the printing paper being wound around the roller 3.

[0235] The printing paper is wound and rolled onto roller 3, making it easy for the printing paper to unfold and be used in the printer.

[0236] Furthermore, the roller 3 is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0237] To better understand this application, the technical solution of this application will be described in detail below with reference to Figures 12 to 20:

[0238] The printing paper includes at least one printing unit 1. The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The bottom release layer 11 is provided with a printing area 111 and a laminating area 112. A fold line 113 is formed between the printing area 111 and the laminating area 112. The label layer 12 and the protective layer 13 are respectively disposed on the printing area 111 and the laminating area 112. The protective layer 13 is also provided with a fourth adhesive layer 15 on the side away from the bottom release layer 11 for bonding with the label layer 12 and the protective layer 13 respectively. The edge of the fourth adhesive layer 15 is spaced apart from the edge of the bottom release layer 11. The protective layer 13 can be bonded to the label layer 12 through the fourth adhesive layer 15 when the bottom release layer 11 is folded along the fold line 113. Compared to existing technologies, by providing a fourth adhesive layer 15 on the protective layer 13, the protective layer 13 can be adhered to the label layer 12 for coating protection of the label layer 12. At the same time, a gap area 114 for the user to hold is formed between the edge of the fourth adhesive layer 15 and the edge of the bottom release layer 11, avoiding direct contact between the hand and the adhesive layer on the protective layer 13 or the label layer 12, and avoiding the influence of dust or hands on the stickiness of the hot melt adhesive layer.

[0239] In the specific workflow of this application, when in use, two adjacent printing units 1 can be easily separated by the connecting line 2. Then, the release paper 18 is peeled off from the protective layer 13. Holding the spacer area 114 on the label layer 12, the release layer 11 is folded along the fold line 113, so that the protective layer 13 is connected to the printed information 14 and the label layer 12 via the fourth adhesive layer 15. Then, the printing area 111 or the film-coated area 112 of the release layer 11 is peeled off from the protective layer 13 or the printing layer, and the printing area 111 or the film-coated area 112 is broken along the fold line 113. Finally, the remaining film-coated area 112 or the printing area 111 of the release layer 11 is peeled off from the protective layer 13 or the printing layer. Holding the spacer area 114, the user attaches the integrated protective layer 13, printed information 14 and label layer 12 to the product or object, avoiding or reducing contact between fingers and the hot melt adhesive layer, thereby avoiding or reducing the impact on the adhesion of the hot melt adhesive layer.

[0240] Example 4

[0241] Please refer to Figures 21 and 22. Figure 21 is a schematic diagram of the structure of a printed label 100 in one embodiment of this application. The printed label includes a release layer 1, a printing unit 2, and a laminating unit 3. The release layer 1 has a printing area 11 and a laminating area 12. The printing unit 2 protrudes from the printing area 11, and the laminating unit 3 protrudes from the laminating area 12. The printing unit 2 and the laminating unit 3 are located on the same side of the release layer 1. The absolute value of the difference between the thickness of the laminating unit 3 and the thickness of the printing unit 2 does not exceed 0.15 mm. The laminating unit 3 and the printing unit 2 are arranged at intervals along the axial direction of the label roll 4 so that when the label roll 4 is output, the laminating unit 3 and the printing unit 2 can be pressed by the printer's rollers simultaneously. It should be noted that the label roll 4 is formed by connecting and winding multiple printed labels 100 end to end through release lines 14. The label roll 4 is rotatably housed inside the printer, with its free end extending from the printer's paper output port. Driven by the printer's rollers, the label roll 4 can rotate relative to the printer to gradually release the printed labels 100. The axis of the label roll 4 is its axis of rotation, which can also be understood as the width direction of the printed labels 100. The length direction of the printed labels 100 is its direction of movement within the printer. Adjacent printed labels 100 can be separated by tearing open the release lines 14.

[0242] In this embodiment, the release layer 1 has a printing area 11 and a laminating area 12 that can be spaced apart. The spacing is not limited, for example, 2-8mm, such as 2mm, 5mm, 8mm, etc., so that the release layer 1 can be directly folded over by the fold line so that the laminating unit 3 covers the printing unit 2. The printing unit 2 and the laminating unit 3 are located on the same side of the release layer 1, so that the printer's roller can simultaneously press against the printing unit 2 and the laminating unit 3 on the release layer 1, and drive the printed label to be output from the printer step by step. The absolute value of the difference between the thickness of the laminating unit 3 and the thickness of the printing unit 2 does not exceed 0.15mm, so that when the roller presses against the printing unit 2 and the laminating unit 3 at the same time, the roller will not tilt excessively, and the print head connected to the roller will not tilt excessively, resulting in good printing effect of the print head on the printing unit 2.

[0243] In one embodiment, the thickness of the coating unit 3 is no greater than the thickness of the printing unit 2. In this embodiment, if the thickness of the printing unit 2 is greater than the thickness of the coating unit 3, during the printing process, the rubber roller contacts the printing unit 2 first. Under the pressure of the printing unit 2, the print head tilts slightly, resulting in a larger contact area between the print head and the printing unit 2, leading to better printing results. If the thickness of the printing unit 2 is equal to the thickness of the coating unit 3, then the rubber roller contacts both the printing unit 2 and the coating unit 3 simultaneously. Neither the rubber roller nor the print head tilts, resulting in even better printing results for the printing unit 2.

[0244] In one embodiment, the thickness of the printing unit is less than the thickness of the laminating unit, with the difference between the thicknesses being 0.01-0.1 mm. In this embodiment, the thickness of the laminating unit 3 is greater than the thickness of the printing unit 2, and the thickness difference needs to be between 0.01-0.1 mm, i.e., the thickness difference should be small. During the printing process, the rubber roller contacts the laminating unit 3 first. Under the pressure of the laminating unit 3, the print head slightly tilts to contact the printing unit 2 to print on it, which basically has little impact on the printing effect of the printing unit 2. It should be emphasized that in the actual processing of labels, there is no requirement that either the printing unit 2 or the laminating unit 3 must be thicker; it can be determined according to actual needs. After multiple tests, it has been found that as long as the thickness difference between the two does not exceed 0.15 mm, the printing effect of the print head on the printing unit meets the quality requirements.

[0245] In one embodiment, referring to Figures 21 and 23, the side of the coating unit 3 facing away from the coating area has release paper 34. In this embodiment, the release paper 34 covers the protective layer 31 of the coating unit 3 to provide protection for the protective layer 31. When the protective layer 31 needs to be used, the release paper 34 can be peeled off the protective layer 31.

[0246] In one embodiment, referring to Figure 21, the laminating unit 3 includes a first adhesive layer 32, a protective layer 31, and a second adhesive layer 33 stacked sequentially. The first adhesive layer 32 is connected to the release layer 1, and the second adhesive layer 33 is connected to the release paper 34. The printing unit 2 includes a third adhesive layer 22 and a label layer 21 connected together. The side of the third adhesive layer 22 facing away from the label layer 21 is connected to the release layer 1. The thickness of the label layer 21 is greater than the sum of the thicknesses of the first adhesive layer 32, the protective layer 31, and the second adhesive layer 33. In this embodiment, the protective layer 31 of the laminating unit 3 is fixed to the release layer 1 by the first adhesive layer 32. The second adhesive layer 33 is used to bond with the printing unit 2 when the release layer 1 is flipped and folded, so that the protective layer 31 can be fixed to the printing unit 2, thus providing protection for the printing unit 2. Release paper 34 is detachably bonded to protective layer 31 via second adhesive layer 33, making it easy to peel off from protective layer 31. Label layer 21 can be a customized sticker with a mixture of text, patterns, and colors for identification purposes.

[0247] In one embodiment, referring to Figure 24, the length of the printing unit 2 is less than or equal to the length of the laminating unit 3. The length direction defined in this embodiment refers to the direction of movement of the printed label within the printer. In embodiments where the length of the laminating unit 3 is greater than the length of the printing unit 2, the rubber roller will first press the laminating unit 3 when the printer outputs paper. Then, as the paper continues to output paper, the rubber roller will simultaneously press both the laminating unit 3 and the printing unit 2. This reduces the risk of poor printing quality. The portion of the laminating unit 3 extending beyond the printing unit 2 is close to the printer's paper output port, allowing the rubber roller at the paper output port to first press down on the portion of the laminating unit 3 extending beyond the printing unit 2.

[0248] In one embodiment, referring to Figure 24, the release paper 34 includes a first part 341 and a second part 342, with an easy-tear line 343 between the first part 341 and the second part 342. The area of ​​the laminating unit 3 corresponding to the second part 342 is the same as the area of ​​the printing unit 2. In this embodiment, during the bonding process of the protective layer 31 and the label layer 21, the second part 342 of the release paper 34 can be peeled off first, and then the bottom release layer 1 can be folded in half so that the protective layer 31 covers the label layer 21 to complete the lamination. In this embodiment, the area of ​​the laminating unit 3 corresponding to the second part 342 is the same as the area of ​​the printing unit 2, so that the protective layer 31 can completely cover the label layer 21, achieving a comprehensive protection effect. When peeling off the second part 342, one hand can hold the first part 341 while the other hand peels off the second part 342, avoiding contact with the protective layer 31 corresponding to the second part 342, which would affect the adhesion between the protective layer 31 and the label layer 21.

[0249] In one embodiment, the direction of the tear line 343 is parallel or perpendicular to the axis of the printed label 100. Referring to Figure 24, in the embodiment where the direction of the tear line 343 is parallel to the axis of the printed label, the first portion 341 of the release paper 34 is closer to the printer's roller than the second portion 342. As the printed label moves out of the paper outlet, the roller first presses down on the first portion 341, and then presses down on the second portion 342 as the printed label moves. In this embodiment, the length of the first portion 341 is greater than or equal to the length of the second portion 342, so that the roller is less likely to lift the release paper 34 when it first presses down on the longer portion of the release paper 34.

[0250] Please refer to Figure 25. In the embodiment where the direction of the tear line 343 is perpendicular to the axis of the printed label, when the printed label moves, the rubber roller can simultaneously press down the first part 341 and the second part 342 of the release paper 34. The length of the first part 341 and the second part 342 in this embodiment is not limited. Compared with the previous embodiment, the rubber roller in this embodiment will basically not lift the release paper, and the stability of the release paper is better.

[0251] In one embodiment, the area ratio of the first portion to the second portion is between 1:8 and 10:1. In this embodiment, the first portion 341 of the release paper 34 is closer to the printer's roller than the second portion 342. As the printed label moves out of the paper outlet, the roller first presses down on the first portion 341, and then presses down on the second portion 342 as the printed label moves.

[0252] Please refer to Figure 22. In the embodiment shown in Figure 22, the area ratio of the first part 341 to the area of ​​the second part 342 is 1:8. The ratio of the area of ​​the first part 341 to the area of ​​the second part 342 cannot be less than 1:8. Otherwise, when the rubber roller presses against the tear line 343, it will roll up the second part 342. Since the area of ​​the second part 342 is large, it will have a greater impact on the bonding performance of the second adhesive layer 33 corresponding to the lower part of the second part 342. Therefore, the second part 342 cannot be too large.

[0253] Please refer to Figure 27. In the embodiment shown in Figure 27, the area ratio of the first part 341 to the area of ​​the second part 342 is 10:1. The ratio of the area of ​​the first part 341 to the area of ​​the second part 342 cannot be greater than 10:1 because the rubber roller presses against the first part 341 first and then against the second part 342. When the rubber roller presses against the tear line 343, it rolls up the second part 342. Since the area of ​​the second part 342 is small, it has little impact on the bonding performance of the second adhesive layer 33 corresponding to the lower part of the second part 342.

[0254] In one embodiment, referring to Figure 28, the thickness of the first portion 341 is greater than the thickness of the second portion 342. In this embodiment, the first portion 341 of the release paper 34 is closer to the printer's roller 5 than the second portion 342. As the printed label moves out of the paper outlet, the roller 5 first presses down on the first portion 341, and then presses down on the second portion 342 as the printed label moves. Because the thickness of the first portion 341 is greater than the thickness of the second portion 342, the roller 5 is less likely to lift the second portion 342 when it first presses against the tear line 343.

[0255] In one embodiment, referring to Figure 26, the distance between the printing unit 2 and the coating unit 3 is 1-8 mm. Multiple experiments have shown that setting the distance between the printing unit 2 and the coating unit 3 to 1-8 mm ensures that the height difference between them prevents the roller 5 and the print head from tilting significantly, thus affecting the print head's printing performance on the printing unit 2. In a preferred embodiment, provided the absolute value of the difference between the thickness of the coating unit 3 and the thickness of the printing unit 2 does not exceed 0.15 mm, setting the distance between the printing unit 2 and the coating unit 3 to 4 mm has minimal impact on the tilting of the roller 5 and the print head, and essentially does not affect the print head's printing effect on the printing unit 2.

[0256] In one embodiment, referring to Figure 21, the release layer 1 has a fold line 13, and the printing area 11 and the laminating area 12 are symmetrical about the fold line 13. In this embodiment, the printing unit 2 is located in the printing area 11, and the laminating unit 3 is located in the laminating area 12. When it is necessary to combine the printing unit 2 and the laminating unit 3, the release layer 1 can be folded and flipped along the fold line 13 to combine the printing unit 2 and the laminating unit 3, which is convenient to use.

[0257] In one embodiment, referring to FIG. 21, the printing unit 2 further includes a printed pattern layer 23, which is adhered to the side of the label layer 21 facing away from the third adhesive layer 22. The thickness of the printed pattern layer 23 is no greater than 0.01 mm. In this embodiment, the printed pattern layer 23 can be a transparent sticker with a pattern, used to combine with the label layer 21 to add information elements to the label layer 21 for better label identification. For example, the printed pattern layer 23 can be a transparent sticker with a logo, and the side facing the label layer 21 is adhesive and can be adhered to the label layer 21.

[0258] To better understand this application, the technical solution of this application will be described in detail below with reference to Figures 21 and 22:

[0259] The printing label provided in this application has a printing unit 2 and a laminating unit 3 respectively located in the printing area 11 and laminating area 12 of the release layer 1. Folding the release layer 1 in half allows the printing unit 2 and the laminating unit 3 to be combined, thus protecting the printing unit 2. Since the absolute value of the difference between the thickness of the laminating unit 3 and the thickness of the printing unit 2 does not exceed 0.15mm, the thickness difference is small. Therefore, when the printing label is printed inside the printer, it will not press against the rubber roller or cause the print head to tilt severely. The contact area between the print head and the printing unit 2 is large, resulting in good printing effect and high clarity.

[0260] Example 5

[0261] Please refer to Figure 29. Figures 29 and 30 are schematic diagrams of the structure of the label paper for printing in one embodiment of this application. The label paper for printing includes at least one printing unit 1. The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The bottom release layer 11 includes a printing area 111 and a laminating area 112. The printing area 111 and the laminating area 112 are arranged along the length direction of a single printing unit 1. A fold line 113 is provided between the printing area 111 and the laminating area 112. The label layer 12 is disposed in the printing area 111, and the protective layer 13 is disposed in the laminating area 112. Folding the bottom release layer 11 along the fold line 113 allows the protective layer 13 to cover and adhere to the label layer 12.

[0262] In this device, the printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The label layer 12 and the protective layer 13 are respectively disposed on the printing area 111 or the laminating area 112, and the printing area 111 and the laminating area 112 are distributed on both sides of the fold line 113. Folding the bottom release layer 11 along the fold line 113 allows the protective layer 13 to be laminated and pasted onto the label layer 12, and the printing area 111 and the laminating area 112 are arranged along the length direction of a single printing unit 1.

[0263] Compared to existing technologies, by arranging the printing area 111 and the laminating area 112 along the length of a single printing unit 1, after the protective layer 13 and the information paper layer are bonded, the connection length that the protective layer 13 needs to overcome to separate the bottom release layer 11 is changed from the original length dimension of the protective layer 13 to the width dimension of the protective layer 13. At this time, the connection force to overcome the width dimension of the protective layer 13 is less than the connection force to overcome the length dimension of the protective layer 13. This makes it easier for users to peel the bottom release layer 11 off the protective layer 13. The operation is simple and can solve the problem in existing technologies where the arrangement relationship between the release paper and the protective layer 13 affects the integrity of the separation between the bottom release layer 11 and the protective layer 13, and sometimes even the label paper separates from the release paper first.

[0264] In this embodiment, as shown in FIG30, the fold line 113 is located at the center line of the bottom release layer 11. The printing area 111 and the film coating area 112 are distributed symmetrically from left to right or from top to bottom along the fold line 113, and the printing area 111 and the film coating area 112 are connected by the fold line 113.

[0265] The printing area 111 and the laminating area 112 are symmetrically distributed along the fold line 113, which makes it convenient for users to fold the release layer 11 to support the bottom, and to make it easy for the protective layer 13 to be pasted on the label layer 12.

[0266] In one embodiment, the aspect ratio of a single printing unit 1 is between 1.1:1 and 12:1.

[0267] The aspect ratio of the printing unit 1 is set in the range of 1.1:1 to 12:1, which can effectively achieve the separation of the bottom release layer 11 and the protective layer 13.

[0268] Understandably, the aspect ratio cannot be less than 1.1, otherwise it is easier for background technology problems to occur. Similarly, the aspect ratio cannot be greater than 12, as the lamination effect will be worse if it is greater than 12, and even the lamination will be prone to misalignment.

[0269] In one embodiment, as shown in FIG30, the side of the label layer 12 facing away from the bottom release layer 11 is used to add printing information 14, and the side of the protective layer 13 facing away from the bottom release layer 11 is also provided with a fourth adhesive layer 15, which is used to bond to the protective layer 13 and the label layer 12 respectively.

[0270] The fourth adhesive layer 15 is attached to the protective layer 13 and can be bonded to the label layer 12. It is used to cover and protect the label layer 12 on the side away from the bottom release layer 11 by adding printed information 14.

[0271] In one embodiment, as shown in FIG30, the printing unit 1 further includes a fifth adhesive layer 16, which is disposed between the label layer 12 and the bottom release layer 11. The two sides of the fifth adhesive layer 16 are respectively bonded to the label layer 12 and the bottom release layer 11, and the adhesive strength of the fifth adhesive layer 16 is sufficient to keep the protective layer 13 and the label layer 12 bonded when the label layer 12 and the bottom release layer 11 are separated.

[0272] The fifth adhesive layer 16 is used to attach the label layer 12 to the product. At the same time, by setting the adhesive strength between the fifth adhesive layer 16 and the bottom release layer 11 to be less than the adhesive strength between the fourth adhesive layer 15 and the protective layer 13 and the label layer 12, it is possible to avoid the fourth adhesive layer 15 from separating from the protective layer 13 and the label layer 12 when separating the printing area 111 of the bottom release layer 11 from the label layer 12.

[0273] Furthermore, both the fourth adhesive layer 15 and the fifth adhesive layer 16 are pressure-sensitive adhesives. The pressure-sensitive adhesive of the fourth adhesive layer 15 is mainly used to connect the protective layer 13 to the printed information layer 14 and the label layer 12 after the bottom release layer 11 is flipped and folded, so that the protective layer 13 can protect the printed information layer 14 and the label layer 12. The pressure-sensitive adhesive of the fifth adhesive layer 16 is mainly used to adhere to the bonding area after the bottom release layer 11 is peeled off, such as the product surface or wall. The pressure-sensitive adhesive used here is a conventional setting known to those skilled in the art and will not be described in detail.

[0274] In one embodiment, as shown in FIG30, the printing unit 1 further includes a sixth adhesive layer 17, which is disposed between the protective layer 13 and the bottom release layer 11. The two sides of the sixth adhesive layer 17 are respectively bonded to the protective layer 13 and the bottom release layer 11. The sixth adhesive layer 17 is AB double-sided adhesive, and the bonding strength between the sixth adhesive layer 17 and the protective layer 13 is less than the bonding strength between the sixth adhesive layer 17 and the bottom release layer 11. The bonding strength of the sixth adhesive layer 17 satisfies that when the protective layer 13 and the bottom release layer 11 are separated, the fourth adhesive layer 15 always keeps the protective layer 13 and the label layer 12 in an adhesive state, and the sixth adhesive layer 17 remains on the bottom release layer 11.

[0275] The sixth adhesive layer 17 is used to bond the coating area 112 to the protective layer 13.

[0276] Furthermore, the adhesive strength between the sixth adhesive layer 17 and the protective layer 13 is less than the adhesive strength between the sixth adhesive layer 17 and the bottom release layer 11, and the adhesive strength between the sixth adhesive layer 17 and the bottom release layer 11 is less than the adhesive strength between the fourth adhesive layer 15 and the protective layer 13 and the label layer 12. This facilitates the separation of the bottom release layer 11 and the protective layer 13, and prevents the sixth adhesive layer 17 from adhering to the protective layer 13. At the same time, it can prevent the accidental separation between the fourth adhesive layer 15 and the label layer 12 due to the separation of the bottom release layer 11 and the protective layer 13.

[0277] Furthermore, the use of AB double-sided tape is a standard setup known to those skilled in the art, and will not be elaborated upon further.

[0278] In this embodiment, as shown in FIG30, the surface of the protective layer 13 is also provided with release paper 18, which includes a first part and a second part, and the first part and the second part are disconnected.

[0279] Release paper 18 covers the surface of the fourth adhesive layer 15 to protect the fourth adhesive layer 15 from excessive dust before use, which would weaken its adhesiveness. As shown in Figure 29, the release paper 18 consists of a first part and a second part that are separated from each other. Alternatively, the first part and the second part can be understood as being separated by a solid slit line. The first part and the second part together cover all parts of the fourth adhesive layer 15, making it easy to separate the release paper 18 from the fourth adhesive layer 15.

[0280] Furthermore, as shown in Figure 32, one end of the release paper 18 may not cover the fourth adhesive layer 15, while the other end of the release paper 18 may be completely attached to the fourth adhesive layer 15. That is, in this embodiment, the area of ​​the release paper 18 is slightly smaller than the area of ​​the fourth adhesive layer 15, so that the release paper 18 can be quickly torn off to detach from the fourth adhesive layer 15.

[0281] In one embodiment, as shown in FIG29, the break lines of the first and second portions extend along the width direction of a single printing unit 1.

[0282] It is understandable that the break line of the first part 181 and the second part 182 is set parallel to the fold line 113. When the release paper 18 is torn open through the break between the first part and the second part, the impact on the label layer 12 of the printing area 111 is small. The label layer will not be bent, and it is not easy for the label paper to detach from the bottom release layer 11 when the release paper 18 is torn open. As a result, during the secondary separation, the label layer 12 and the bottom release layer 11 separate first than the protective layer 13 and the bottom release layer 11.

[0283] In one embodiment, as shown in FIG33, the break line of the first part and the second part extends along the length direction of a single printing unit 1, and the interval between the printing area 111 and the coating area 112 is greater than 2 mm.

[0284] It is understandable that the break line between the first part and the second part extends along the length of a single printing unit 1, that is, the break line between the first part 181 and the second part 182 is set perpendicular to the fold line 113. Even if the release paper 18 is torn at the break point between the first part and the second part, it will cause bending of the label layer 12 of the printing area 111. However, by setting the interval between the printing area 111 and the laminating area 112 to be greater than 2mm, the impact can be reduced. If the interval is too short, the impact on the label layer 12 of the printing area 111 will be greater when the release paper 18 is torn at the break point between the first part and the second part.

[0285] In one embodiment, the size of the printing area 111 and the size of the coating area 112 are both no greater than 50 mm along the length of a single printing unit 1.

[0286] It is understandable that if the interval between the printing area 111 and the laminating area 112 is set too long, misalignment may easily occur during the folding process of the printing area 111 and the laminating area 112. Therefore, the interval between the printing area 111 and the laminating area 112 should be within the range of 2mm to 50mm.

[0287] In this embodiment, as shown in FIG30, when the printing area 111 and the film coating area 112 are folded along the fold line 113, the side of the printing area 111 is aligned with the side of the film coating area 112.

[0288] It is understandable that aligning the side of the printing area 111 with the side of the laminating area 112 can effectively ensure that the protective layer 13 can cover and protect the entire label layer 12.

[0289] In one embodiment, as shown in FIG29, the printing unit 1 includes a plurality of printing units 1, which are spaced apart along the width direction of a single printing unit 1.

[0290] The fold line 113 is set in the same direction as the width of a single printing unit 1, and the printing area 111 and the film coating area 112 are symmetrically distributed along the fold line 113 as the axis of symmetry, and are arranged sequentially in a direction perpendicular to the winding. In this way, when the printed printing unit 1 is torn off, the risk of the printing area 111 and the film coating area 112 separating can be minimized.

[0291] In another embodiment, as shown in FIG31, the printing unit 1 includes a plurality of printing units 1, which are spaced apart along the length direction of a single printing unit 1, and a connecting line 2 is formed between two adjacent printing units 1, wherein the connection strength between two adjacent printing units 1 is less than or equal to the connection strength between the printing area 111 and the coating area 112.

[0292] It is understood that the direction of the fold line 113 is consistent with the width direction of a single printing unit 1, and the printing area 111 and the coating area 112 are symmetrically distributed vertically along the fold line 113 as the axis of symmetry, and are arranged sequentially along the winding direction.

[0293] Furthermore, a connecting line 2 is formed between two adjacent printing units 1. Here, both the fold line 113 and the connecting line 2 are easy-tear structures known to those skilled in the art, which facilitates tearing a single printing unit 1 off the label after printing is completed. Further details will not be elaborated here.

[0294] Furthermore, the connection strength at the connecting line 2 is greater than that at the fold line 113, which can prevent accidental separation of the printing area 111 and the coating area 112 of the release layer 11 when a single printing unit 1 is separated.

[0295] In another embodiment, as shown in Figures 34 and 35, the connecting line 2 is dotted to form a point-to-point connection between two adjacent printing units 1.

[0296] By connecting two adjacent printing units 1 through a point-to-point connection method, users can easily separate the two adjacent printing units 1 after printing is completed.

[0297] Specifically, in this device, two adjacent printing units 1 are connected by connection points that are arranged in an "inverted triangle" or "horizontally set bracket shape", so that the connection between two adjacent printing units 1 only needs to overcome point-to-point connection and can be easily broken, which makes it convenient for users to operate.

[0298] In this embodiment, as shown in Figures 29 and 31, the device also includes a roller 3, which is used to wind multiple printing units 1.

[0299] The printing paper is wound and rolled onto roller 3, making it easy for the printing paper to unfold and be used in the printer.

[0300] Furthermore, the roller 3 is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0301] To better understand this application, the technical solution of this application will be described in detail below with reference to Figures 29 to 35:

[0302] The printing unit 1 includes a bottom release layer 11, a label layer 12, and a protective layer 13. The label layer 12 and the protective layer 13 are respectively disposed on the printing area 111 or the laminating area 112, and the printing area 111 and the laminating area 112 are distributed on both sides of the fold line 113. Folding the bottom release layer 11 along the fold line 113 allows the protective layer 13 to be laminated and pasted onto the label layer 12, and the printing area 111 and the laminating area 112 are arranged along the length of a single printing unit 1. Compared to existing technologies, by arranging the printing area 111 and the film coating area 112 along the length of a single printing unit 1, after the protective layer 13 and the information paper layer are bonded, the connection length that the protective layer 13 needs to overcome to separate the bottom release layer 11 is changed from the original length dimension of the protective layer 13 to the width dimension of the protective layer 13. At this time, the connection force to overcome the width dimension of the protective layer 13 is less than the connection force to overcome the length dimension of the protective layer 13, which makes it easier for users to peel the bottom release layer 11 off the protective layer 13, and the operation is simple.

[0303] The specific workflow of this application is as follows: First, two adjacent printing units 1 can be easily separated by the connecting line 2. Then, the release paper 18 is peeled off from the protective layer 13, and the printing area 111 and the laminating area 112 of the bottom release layer 11 are folded along the fold line 113, so that the protective layer 13 connects the printed information and the label layer 12 through the fourth adhesive layer 15. Then, the laminating area 112 of the bottom release layer 11 is peeled off from the protective layer 13, and the printing area 111 and the laminating area 112 are separated along the fold line 113. Finally, the printing area 111 of the bottom release layer 11 is peeled off from the printing layer. The user holds the protective layer 13, the printed information 14 and the label layer 12 that form a whole and sticks them on the product or object.

[0304] Furthermore, the direction of the fold line 113 is parallel to the width direction of the label layer 12 and the protective layer 13, so that when the film area 112 of the bottom release layer 11 is peeled off from the protective layer 13, the connection length that needs to be overcome to separate the film area 112 of the bottom release layer 11 is changed from the original length dimension of the protective layer 13 to the width dimension of the protective layer 13. At this time, the connection force overcoming the width dimension of the protective layer 13 is less than the connection force overcoming the length dimension of the protective layer 13, which makes it easier for the user to operate.

[0305] This device, through the above structure, can solve the problem in the prior art where the arrangement of the release paper and the protective layer 13 affects the integrity of the separation between the bottom release layer 11 and the protective layer 13, and sometimes even the label paper separates from the release paper first.

[0306] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

A heat transfer label, characterized in that, include: Release layer at the bottom; A laminating unit, the laminating unit including a protective layer disposed on the bottom release layer; and A printing unit, one side of which is detachably connected to the base release layer, and the other side of which is used for printing information and is adapted to be combined with the side of the laminating unit opposite to the base release layer to cover the printing unit with the protective layer. The heat transfer label according to claim 1 is characterized in that, The release layer has a symmetrically arranged film-coating area and a printing area. The film-coating unit further includes a first adhesive layer and a second adhesive layer. The first adhesive layer, the protective layer, and the second adhesive layer are stacked sequentially, and the first adhesive layer adheres to the film-coating area. The printing unit includes a third adhesive layer and a label layer. The third adhesive layer adheres to the printing area. One side of the label layer is adhered to the third adhesive layer, and the other side of the label layer can be bonded to the side of the second adhesive layer opposite to the protective layer. The heat transfer label according to claim 1 is characterized in that, The release liner includes a printing area and a laminating area, with a fold line between the printing area and the laminating area. The label layer is stacked on the release liner and located in the printing area, while the protective layer is stacked on the release liner and located in the laminating area. The protective layer can be folded along the fold line to cover and adhere to the label layer. The printing area and the laminating area are separated along the fold line, which can cause one of the printing area and the laminating area to separate from the label layer or the protective layer disposed thereon, while leaving the other of the printing area and the laminating area on the corresponding label layer or the protective layer. The heat transfer label according to claim 1 is characterized in that, The release liner includes a printing area and a laminating area, with a fold line between the printing area and the laminating area. The label layer is stacked on the release liner and disposed in the printing area. The protective layer is stacked on the release liner and disposed in the laminating area. A fourth adhesive layer is also provided on the side of the protective layer away from the release liner. The fourth adhesive layer is used to bond to the label layer and the protective layer respectively. The edge of the fourth adhesive layer is spaced apart from the edge of the release liner. The protective layer can be adhered to the label layer through the fourth adhesive layer when the release liner is folded along the fold line. The heat transfer label according to claim 1 is characterized in that, The release layer has a printing area and a laminating area; A printing unit, the printing unit being protruding from the printing area; and A laminating unit is provided protruding from the laminating area. The printing unit and the laminating unit are located on the same side of the release layer. The absolute value of the difference between the thickness of the laminating unit and the thickness of the printing unit does not exceed 0.15 mm. The laminating unit and the printing unit are arranged at intervals along the axial direction of the label roll so that when the label roll is output, the laminating unit and the printing unit can be pressed by the printer's rubber rollers simultaneously. The heat transfer label according to claim 1 is characterized in that, The release liner includes a printing area and a laminating area. The printing area and the laminating area are arranged along the length of a single printing unit. A fold line is provided between the printing area and the laminating area. The label layer is disposed in the printing area, and the protective layer is disposed in the laminating area. The release liner is folded along the fold line so that the protective layer covers and adheres to the label layer. The heat transfer label according to claim 2 is characterized in that, The first adhesive layer is AB double-sided adhesive, with the stronger adhesive side of the AB double-sided adhesive bonded to the film-coated area and the weaker adhesive side of the AB double-sided adhesive bonded to the protective layer. The heat transfer label according to claim 2 is characterized in that, The adhesive force between the third adhesive layer and the label layer is greater than the adhesive force between the third adhesive layer and the release liner. The heat transfer label according to claim 2 is characterized in that, The printing unit further includes a printed pattern layer located on the side of the label layer facing away from the third adhesive layer. The printed pattern layer can connect to the second adhesive layer when the film-coated area and the printing area are folded together. The heat transfer label according to claim 2 is characterized in that, The release layer has a fold-off tear line, and the film-coated area and the printing area are symmetrical about the fold-off tear line. The heat transfer label according to claim 2 is characterized in that, The coating unit also includes release paper, which is attached to the side of the second adhesive layer facing away from the protective layer. The heat transfer label according to claim 11 is characterized in that, One end of the release paper is not covered by the second adhesive layer. The heat transfer label according to claim 11 is characterized in that, The release paper includes a first part and a second part that are not connected, and the first part and the second part together cover all parts of the second adhesive layer. The heat transfer label according to claim 3 is characterized in that, The fold line is located at the center line of the release layer. The printing area and the film coating area are connected by the fold line and are symmetrically distributed horizontally or vertically along the fold line as the axis. The heat transfer label according to claim 3 is characterized in that, The side of the label layer facing away from the release layer is used to add printing information. The printing unit also includes a fourth adhesive layer, one side of which is bonded to the protective layer and the other side of which can be bonded to the label layer. This allows the protective layer to cover and bond the label layer. The bonding strength between the fourth adhesive layer and the protective layer and the label layer is such that when the printing area and the film-coated area are separated along the fold line, the protective layer and the label layer remain attached together. The heat transfer label according to claim 15 is characterized in that, The printing unit further includes a fifth adhesive layer, which is disposed between the label layer and the backing release layer. Both sides of the fifth adhesive layer are respectively bonded to the label layer and the backing release layer, and the bonding strength between the fifth adhesive layer and the backing release layer is sufficient to allow the label layer to separate from the backing release layer when the printing area and the film coating area are separated along the fold line. The heat transfer label according to claim 15 is characterized in that, The printing unit further includes a sixth adhesive layer, which is disposed between the protective layer and the bottom release layer. Both sides of the sixth adhesive layer are bonded to the protective layer and the bottom release layer, respectively. The bonding strength between the sixth adhesive layer and the bottom release layer is such that when the printing area and the film coating area are separated along the fold line, the sixth adhesive layer always remains on the bottom release layer. The heat transfer label according to claim 16 is characterized in that, The printing unit also includes release paper, which covers the fourth adhesive layer. The heat transfer label according to claim 18 is characterized in that, The release paper includes a first segment and a second segment, which are separated and can together cover all parts of the fourth adhesive layer. The heat transfer label according to claim 19 is characterized in that, The release paper is long and narrow, and the first segment and the second segment are separated along the length of the release paper. The heat transfer label according to claim 17 is characterized in that, The sixth adhesive layer is AB double-sided adhesive, and the adhesive strength between the sixth adhesive layer and the protective layer is less than the adhesive strength between the sixth adhesive layer and the bottom release layer, so that when the bottom release layer separates from the protective layer, the sixth adhesive layer separates from the protective layer along with the bottom release layer. The heat transfer label according to claim 16 is characterized in that, The heat transfer label has multiple printing units. The heat transfer label also includes connecting lines. The connecting lines are disposed between two adjacent printing units and are connected to both adjacent printing units, so that the printing areas or coating areas of the multiple printing units are alternately arranged along the winding direction or the printing areas or coating areas of the multiple printing units are arranged side by side along the direction perpendicular to the winding direction. The heat transfer label according to claim 22 is characterized in that, The connection strength between the connecting line and the two printing units is such that when the two printing units are disconnected along the connecting line, the printing area and the coating area remain connected. The heat transfer label according to claim 4 is characterized in that, At least one edge of the label layer is spaced apart from the edge of the release liner. The heat transfer label according to claim 24 is characterized in that, In the arrangement direction of the label layer and the protective layer, the distance between the edge of the fourth adhesive layer and the edge of the bottom release layer is greater than the distance between the edge of the label layer and the edge of the bottom release layer. The heat transfer label according to claim 4 is characterized in that, After the release layer is folded along the fold line, the edge of the protective layer does not exceed the edge of the label layer. The heat transfer label according to claim 4 is characterized in that, The distance between the label layer and the protective layer in their arrangement direction is greater than three times the sum of the thicknesses of the label layer and the protective layer, but less than 10 mm. The heat transfer label according to claim 4 is characterized in that, The surface of the protective layer is also provided with release paper, which is connected to the protective layer via the fourth adhesive layer to protect the fourth adhesive layer. The heat transfer label according to claim 28 is characterized in that, The release paper includes a first part and a second part, which are separated and together can cover all parts of the fourth adhesive layer. The heat transfer label according to claim 29 is characterized in that, The release paper is long and narrow, with the first part and the second part separated along the length of the release paper. The heat transfer label according to claim 29 is characterized in that, The ratio of the area occupied by the first part to the area occupied by the second part is 1:2 to 1:

10. The heat transfer label according to claim 4 is characterized in that, The distance between the edge of the fourth adhesive layer and the edge of the bottom release layer ranges from 1 to 8 mm. The heat transfer label according to claim 4 is characterized in that, The fold line is located at the center line of the release layer, and the printing area and the film coating area are symmetrically distributed horizontally or vertically along the fold line as an axis of symmetry. The heat transfer label according to claim 32 is characterized in that, The printing unit further includes a fifth adhesive layer, which is disposed between the label layer and the bottom release layer. Both sides of the fifth adhesive layer are respectively bonded to the label layer and the bottom release layer. The adhesive strength of the fifth adhesive layer is sufficient to keep the protective layer and the label layer bonded even when the label layer and the bottom release layer are separated. The heat transfer label according to claim 34 is characterized in that, The printing unit further includes a sixth adhesive layer, which is disposed between the protective layer and the bottom release layer. The sixth adhesive layer is an AB double-sided adhesive, and both sides of the sixth adhesive layer are respectively bonded to the protective layer and the bottom release layer. The adhesive strength of the sixth adhesive layer is such that when the protective layer and the bottom release layer are separated, the fourth adhesive layer always keeps the protective layer and the label layer in an adhesive state, and the sixth adhesive layer remains on the bottom release layer. The heat transfer label according to claim 4 is characterized in that, The printing paper contains multiple printing units, and the printing paper also includes connecting lines. The connecting lines are disposed between two adjacent printing units and are connected to both adjacent printing units, so that the printing areas or coating areas of the multiple printing units are arranged alternately along the winding direction or the printing areas or coating areas of the multiple printing units are arranged side by side along a direction perpendicular to the winding direction. The heat transfer label according to claim 36 is characterized in that, The connecting lines are dotted to form a point-to-point connection between two adjacent printing units. The heat transfer label according to claim 5 is characterized in that, The thickness of the coating unit is not greater than the thickness of the printing unit. The heat transfer label according to claim 5 is characterized in that, The thickness of the printing unit is less than the thickness of the coating unit, and the difference between the thickness of the coating unit and the thickness of the printing unit is 0.01-0.1 mm. The heat transfer label according to claim 5 is characterized in that, The side of the coating unit opposite to the coating area has release paper. The heat transfer label according to claim 40 is characterized in that, The length of the printing unit is less than or equal to the length of the coating unit. The heat transfer label according to claim 41 is characterized in that, The release paper includes a first part and a second part, with an easy-tear line between the first part and the second part, and the area of ​​the laminating unit corresponding to the second part is the same as the area of ​​the printing unit. The heat transfer label according to claim 42 is characterized in that, The direction of the tear line is parallel or perpendicular to the axis of the printed label. The heat transfer label according to claim 40 is characterized in that, The laminating unit includes a first adhesive layer, a protective layer, and a second adhesive layer stacked sequentially. The first adhesive layer is connected to the bottom release layer, and the second adhesive layer is connected to the release paper. The printing unit includes a third adhesive layer and a label layer connected together. The side of the third adhesive layer opposite to the label layer is connected to the bottom release layer. The thickness of the label layer is greater than the sum of the thicknesses of the first adhesive layer, the protective layer, and the second adhesive layer. The heat transfer label according to claim 42 is characterized in that, The ratio of the area of ​​the first part to the area of ​​the second part is between 1:8 and 10:

1. The heat transfer label according to claim 45 is characterized in that, The thickness of the first part is greater than the thickness of the second part. The heat transfer label according to claim 5 is characterized in that, The distance between the printing unit and the coating unit is 1-8mm. The heat transfer label according to claim 5 is characterized in that, The release layer has a fold line, and the printing area and the film coating area are symmetrical about the fold line. The heat transfer label according to claim 44 is characterized in that, The printing unit further includes a printed pattern layer, which is adhered to the side of the label layer facing away from the third adhesive layer, and the thickness of the printed pattern layer is no greater than 0.01 mm. The heat transfer label according to claim 6 is characterized in that, The fold line is located at the center line of the release layer. The printing area and the film coating area are symmetrically distributed along the fold line, either horizontally or vertically, and are connected by the fold line. The heat transfer label according to claim 6 is characterized in that, The aspect ratio of a single printed unit ranges from 1.1:1 to 12:

1. The heat transfer label according to claim 6 is characterized in that, The side of the label layer opposite to the bottom release layer is used to add printing information. The protective layer also has a fourth adhesive layer on the side opposite to the bottom release layer. The fourth adhesive layer is used to bond to the protective layer and the label layer respectively. The heat transfer label according to claim 52 is characterized in that, The printing unit further includes a fifth adhesive layer, which is disposed between the label layer and the bottom release layer. Both sides of the fifth adhesive layer are respectively bonded to the label layer and the bottom release layer. The adhesive strength of the fifth adhesive layer is sufficient to keep the protective layer and the label layer bonded even when the label layer and the bottom release layer are separated. The heat transfer label according to claim 53 is characterized in that, The printing unit further includes a sixth adhesive layer, which is disposed between the protective layer and the bottom release layer. Both sides of the sixth adhesive layer are bonded to the protective layer and the bottom release layer, respectively. The sixth adhesive layer is an AB double-sided adhesive, and the adhesive strength of the sixth adhesive layer is sufficient to ensure that when the protective layer and the bottom release layer are separated, the fourth adhesive layer always keeps the protective layer and the label layer bonded, and the sixth adhesive layer remains on the bottom release layer. The heat transfer label according to claim 52 is characterized in that, The protective layer surface is also provided with release paper, which includes a first part and a second part, and the first part and the second part are disconnected. The heat transfer label according to claim 55 is characterized in that, The break lines of the first and second portions extend along the width direction of a single printed cell. The heat transfer label according to claim 55 is characterized in that, The break line between the first portion and the second portion extends along the length of a single printing unit, and the interval between the printing area and the coating area is greater than 2 mm. The heat transfer label according to claim 6 is characterized in that, Along the length of a single printing unit, the size of both the printing area and the coating area is no greater than 50 mm. The heat transfer label according to claim 6 is characterized in that, When the printing area and the coating area are folded along the fold line, the side of the printing area is aligned with the side of the coating area. The heat transfer label according to claim 6 is characterized in that, The printing unit includes multiple units, which are arranged at intervals along the width direction of a single printing unit. The heat transfer label according to claim 6 is characterized in that, The printing unit includes multiple units, which are spaced apart along the length of a single printing unit, and a connecting line is formed between two adjacent printing units, wherein the connection strength between two adjacent printing units is less than or equal to the connection strength between the printing area and the coating area. The heat transfer label according to claim 61 is characterized in that, The connecting lines are dotted, which are used to form a point-to-point connection between two adjacent printing units. The heat transfer label according to claim 6 is characterized in that, It also includes rollers for winding around the plurality of the printing units. A label roll, characterized in that, It includes a roller and a plurality of heat transfer labels as described in any one of claims 1, 2, 7-13, wherein the plurality of heat transfer labels are connected in sequence by tear lines and wound around the roller. A label roll, characterized in that, Includes a roller and a thermal transfer label as described in any one of claims 4, 24-37, wherein the printing paper is wound around the roller.

Images