Environment-friendly silicone oil release paper

Abstract

The utility model belongs to the technical field of release paper, disclose a kind of environmental protection type silicon oil release paper, including release paper body, release paper body is by degradable substrate layer, electrically conductive heating layer, insulating protective layer and silicon oil release layer, the upper surface of degradable substrate layer is equipped with electrically conductive heating layer, the upper surface of electrically conductive heating layer is equipped with insulating protective layer, the upper surface of insulating protective layer is equipped with silicon oil release layer, the both sides of electrically conductive heating layer are equipped with electrode groove, electrode groove is equipped with electrode in its inside, and electrode can be conducted with outside low-voltage power supply;Heating function is built-in in the form of film, without changing the flexibility, thickness and use habit of release paper, realize the perfect unity of function and form, solve the peeling problem under low temperature and high humidity environment;Low-voltage power supply is used, and it is safe and reliable;Heating power can be designed according to requirement, and only start when needed, energy-saving and efficient, applicable to cold chain logistics label, outdoor equipment protective film, automobile electronic label and other high-end fields.

Description

Technical Field

[0001] This utility model belongs to the field of release paper technology, specifically relating to an environmentally friendly silicone oil release paper. Background Technology

[0002] Release paper is a key component of pressure-sensitive adhesive products such as tapes, labels, and protective films. In low-temperature and high-humidity environments such as cold chain logistics, outdoor signage, northern winters, or offshore operations, water vapor can easily condense into a water film or even freeze on the surface of the release paper.

[0003] Water films or ice layers disrupt the interface between the release layer and the adhesive, leading to abnormally increased release force or adhesion, making normal peeling impossible. Moisture can corrode certain types of adhesives, causing a decrease in their initial tack and holding power, resulting in product failure. Forcibly peeling off frosted or frozen labels can easily cause the label paper or film substrate to tear. Therefore, it is necessary to design an environmentally friendly silicone oil release paper to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly silicone oil release paper to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly silicone oil release paper, comprising a release paper body, wherein the release paper body is composed of a biodegradable substrate layer, a conductive heating layer, an insulating protective layer and a silicone oil release layer, wherein a conductive heating layer is installed on the upper surface of the biodegradable substrate layer, an insulating protective layer is installed on the upper surface of the conductive heating layer, and a silicone oil release layer is installed on the upper surface of the insulating protective layer, wherein electrode grooves are formed on both sides of the conductive heating layer, and electrodes that can be connected to an external low-voltage power supply are installed inside the electrode grooves.

[0006] Preferably, a positioning groove is formed on the upper surface of the biodegradable substrate layer, and a positioning protrusion is fixed on the lower part of the conductive heating layer.

[0007] Preferably, a patterned area is mounted on the upper surface of the conductive heating layer, and electrodes are connected to both ends of the patterned area.

[0008] Preferably, the positioning protrusion is integrally formed with the conductive heating layer, and the positioning protrusion is located inside the positioning groove.

[0009] Preferably, the patterned area is a conductive ink pattern formed by printing, and the conductive ink is silver nanowire ink, graphene conductive ink, or carbon paste.

[0010] Preferably, the electrode is a thickened contact pad formed of conductive silver paste, or a riveted metal sheet.

[0011] Preferably, the biodegradable substrate layer is a polylactic acid film or a base paper coated with polylactic acid; the silicone oil release layer is a solvent-free silicone oil coating.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The heating function is built into a thin film without changing the flexibility, thickness, or usage habits of the release paper, achieving a perfect unity of function and form, and solving the peeling problem in low temperature and high humidity environments.

[0013] 2. It adopts low voltage power supply, which is safe and reliable; the heating power can be designed as needed and only starts when needed, which is energy-saving and efficient. It is suitable for high-end fields such as cold chain logistics labels, outdoor equipment protective films, automotive electronic tags, and cold-region medical dressings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning and reinforcement structure of the biodegradable substrate layer and the conductive heating layer of this utility model. Figure 3 This is a schematic diagram of the conductive heating layer structure of this utility model; In the diagram: 1. Release paper body; 11. Biodegradable substrate layer; 12. Conductive heating layer; 13. Insulating protective layer; 14. Silicone oil release layer; 2. Electrode; 3. Positioning groove; 4. Positioning protrusion; 5. Pattern area; 6. Electrode groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figures 1 to 3 This utility model provides a technical solution: an environmentally friendly silicone oil release paper, including a release paper body 1. The release paper body 1 is composed of a biodegradable substrate layer 11, a conductive heating layer 12, an insulating protective layer 13, and a silicone oil release layer 14. The conductive heating layer 12 is installed on the upper surface of the biodegradable substrate layer 11, the insulating protective layer 13 is installed on the upper surface of the conductive heating layer 12, and the silicone oil release layer 14 is installed on the upper surface of the insulating protective layer 13. Electrode grooves 6 are opened on both sides of the conductive heating layer 12, and electrodes 2 that can be connected to an external low-voltage power supply are installed inside the electrode grooves 6.

[0017] First, a 125 μm thick polylactic acid (PLA) film was used as the biodegradable substrate layer 11.

[0018] Then, using precision screen printing technology, a strip pattern conductive heating layer 12 composed of silver nanowire conductive ink is printed on the substrate layer, and thickened electrodes 2 are printed at both ends of the pattern.

[0019] Next, a thin, dense water-based polyurethane coating is applied to the printed conductive heating layer, and after curing, it forms an insulating protective layer 13. This layer is used to prevent short circuits and provide a smooth surface.

[0020] Finally, solvent-free silicone oil is coated onto the insulating protective layer to form a silicone oil release layer 14.

[0021] As described above, this invention has the following beneficial effects: When the sensor detects that the ambient humidity is >80% and the temperature is <5℃, the control system automatically connects a 12V DC power supply to electrode 2. The conductive heating layer 12 raises the surface temperature of the release paper to about 15℃ within seconds, effectively preventing condensation. After the peeling operation is completed, the power supply is automatically cut off.

[0022] Example 2: Please refer to Figures 1 to 3 As shown, based on Embodiment 1, this utility model provides a technical solution: a positioning groove 3 is formed on the upper surface of the biodegradable substrate layer 11, and a positioning protrusion 4 is fixed on the lower part of the conductive heating layer 12; a patterned area 5 is installed on the upper surface of the conductive heating layer 12, and electrodes 2 are connected to both ends of the patterned area 5; the positioning protrusion 4 is integrally formed with the conductive heating layer 12, and the positioning protrusion 4 is located inside the positioning groove 3 to ensure a more stable bond between the biodegradable substrate layer 11 and the conductive heating layer 12 and to avoid misalignment; the patterned area 5 is a conductive ink pattern formed by printing, and the conductive ink is silver nanowire ink; the electrode 2 is a thickened contact pad formed by conductive silver paste; the biodegradable substrate layer 11 is a base paper coated with polylactic acid; the silicone oil release layer 14 is a solvent-free silicone oil coating.

[0023] The working principle and usage process of this utility model are as follows: When the ambient temperature and humidity change, posing a risk of condensation or frosting, a simple control system, such as a temperature and humidity sensor combined with a switching circuit, supplies a safe low-voltage DC current (e.g., 5V-24V) to the two electrodes 2 of the conductive heating layer 12. The current flows through the conductive heating layer 12, which has a specific resistance, generating heat according to Joule's law. The heat is rapidly conducted upwards to the surface of the silicone oil release layer 14, raising its temperature slightly above the ambient dew point temperature. This effectively prevents or eliminates condensation and frosting, ensuring the release interface remains dry and its performance is stable. Furthermore, the biodegradable substrate layer 11 and the conductive heating layer 12 are positioned by the positioning groove 3 and positioning protrusion 4 during bonding, preventing misalignment and ensuring a more stable bond.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. An environmentally friendly silicone oil release paper, comprising a release paper body (1), characterized in that: The release paper body (1) is composed of a biodegradable substrate layer (11), a conductive heating layer (12), an insulating protective layer (13), and a silicone oil release layer (14). The upper surface of the biodegradable substrate layer (11) is equipped with a conductive heating layer (12), the upper surface of the conductive heating layer (12) is equipped with an insulating protective layer (13), the upper surface of the insulating protective layer (13) is equipped with a silicone oil release layer (14), and electrode grooves (6) are provided on both sides of the conductive heating layer (12). Electrodes (2) that can be connected to an external low-voltage power supply are installed inside the electrode grooves (6).

2. The environmentally friendly silicone oil release paper according to claim 1, characterized in that: The upper surface of the biodegradable substrate layer (11) is provided with a positioning groove (3), and the lower part of the conductive heating layer (12) is fixed with a positioning protrusion (4).

3. The environmentally friendly silicone oil release paper according to claim 1, characterized in that: The upper surface of the conductive heating layer (12) is provided with a patterned area (5), and the two ends of the patterned area (5) are connected to electrodes (2).

4. The environmentally friendly silicone oil release paper according to claim 2, characterized in that: The positioning protrusion (4) is integrally formed with the conductive heating layer (12), and the positioning protrusion (4) is located inside the positioning groove (3).

5. The environmentally friendly silicone oil release paper according to claim 3, characterized in that: The pattern area (5) is a conductive ink pattern formed by printing. The conductive ink is silver nanowire ink, graphene conductive ink or carbon paste.

6. The environmentally friendly silicone oil release paper according to claim 1, characterized in that: The electrode (2) is a thickened contact pad formed by conductive silver paste, or a riveted metal sheet.

7. The environmentally friendly silicone oil release paper according to claim 1, characterized in that: The biodegradable substrate layer (11) is a polylactic acid film or a base paper coated with polylactic acid; the silicone oil release layer (14) is a solvent-free silicone oil coating.

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