Composite film release paper for thermal transfer printing
By setting a plurality of recessed holes on the thermally transferred printed release paper and filling the PE layer, combined with the diffusion of the silicone oil layer, uniform bonding between the PET layer and the silicone oil layer is achieved, solving the problem of difficulty in separation of PET films in the prior art, and improving the peeling convenience.
Patent Information
- Application Number
- CN202421711055.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The existing thermal transfer printing release paper is prone to unevenness when applying the release agent layer, which leads to direct contact between the PET film and the PE layer, making it difficult to adhere, and thus makes it difficult to separate the PET film.
A composite film release paper is designed, which has multiple concave holes on one side of the base paper layer. The PE layer fills the concave holes and overflows to form a complete surface to bond with the PET layer. The silicone oil layer diffuses to the bonding surface when the PET layer is attached to avoid uneven contact.
Through the setting of the concave hole lattice and the diffusion of the silicone oil layer, uniform bonding between the PET layer and the silicone oil layer is achieved, and the peeling convenience between the PET layer and the silicone oil layer is increased, and the problem of difficulty in separation of the PET film is solved.
Smart Images
Figure CN222796093U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal transfer release paper, in particular to a composite film release paper used for thermal transfer printing. Background Art
[0002] Release paper used for thermal transfer printing is generally made by attaching a composite film of PET material to one side of the release paper. The release paper is coated with a PE layer on one side of the base paper layer, and a release agent layer, such as silicone oil, is applied to one side of the PE layer. Then, the PET film is coated with glue and attached to one side of the release agent layer to facilitate separation of the PET film from the release agent layer. Since the release agent layer is prone to uneven coating or the glue on the PET film is directly in contact with a large area of the PE layer and then adhered, it is difficult to separate the PET film. People have conducted a lot of research on this. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a composite film release paper for thermal transfer printing, which can solve the problems in the above-mentioned prior art.
[0004] The utility model is realized through the following technical scheme: a composite film release paper for thermal transfer printing of the utility model comprises a base paper layer, a PE layer is arranged on one side of the base paper layer, a silicone oil layer is arranged on one side of the PE layer, a PET layer is arranged on one side of the silicone oil layer, and the utility model is characterized in that a plurality of concave holes are arranged on an end face of one side of the base paper layer, the silicone oil layer completely fills the PE layer on one side of the concave holes, and then overflows to form a complete surface to be bonded with the PET layer.
[0005] According to a further technical solution, the PE layer is arranged on one end surface of the base paper layer and inside the end wall of the concave hole.
[0006] According to a further technical solution, the contact between the silicone oil layer and the PET layer is surface contact.
[0007] According to a further technical solution, the surface contact includes plane or curved surface contact.
[0008] According to a further technical solution, the recessed holes are arranged in an array.
[0009] According to a further technical solution, the recessed holes are arranged in an array along vertical and horizontal directions.
[0010] The beneficial effects of the utility model are as follows: First, due to the dot matrix setting of the concave holes, when the silicone oil layer is applied, the silicone oil layer retained in the concave holes can also be used to diffuse to the bonding surface of the silicone oil layer and the PET layer when the PET layer is attached, further avoiding uneven contact between the silicone oil layer and the PET layer, so that the silicone oil layer and the PET layer are evenly bonded, and the convenience of peeling the PET layer and the silicone oil layer is increased. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.
[0012] Figure 1 This is a schematic diagram of the overall structure of a composite film release paper for thermal transfer printing of the utility model;
[0013] Figure 2 for Figure 1 Schematic diagram at A in the middle;
[0014] Figure 3 for Figure 2 A schematic diagram of the structure of the original paper layer from the right side after the concave holes are set;
[0015] Figure 4 for Figure 2 Schematic diagram of the structure of the middle PET layer from the right side perspective;
[0016] In the figure, there are concave holes 12, base paper layer 13, PE layer 14, silicone oil layer 15, folds 21, and PET layer 22. DETAILED DESCRIPTION
[0017] like Figure 1-Figure 4 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship are consistent. The utility model is a composite film release paper for thermal transfer printing, including a base paper layer 13, a PE layer 14 is arranged on one side of the base paper layer 13, a silicone oil layer 15 is arranged on one side of the PE layer 14, and a PET layer 22 is arranged on one side of the silicone oil layer 15. The base paper layer 13 can be made of coated paper, offset paper or glassine, etc. The base paper layer 13 preferably uses a material that can be embossed.
[0018] Advantageously, one end surface of the base paper layer 13 is provided with a plurality of recessed holes 12 arranged in an array.
[0019] Advantageously, the concave holes 12 are distributed in a multi-point array, and a plurality of concave holes 12 are arranged in an array along the vertical and horizontal directions.
[0020] Advantageously, the PE layer 14 is disposed on one end surface of the base paper layer 13 and in the end wall of the concave hole 12 .
[0021] Advantageously, the silicone oil layer 15 is disposed on one side of the PE layer 14 , and the silicone oil layer 15 completely fills one side of the PE layer 14 in the recessed hole 12 , so that the contact surface between the silicone oil layer 15 and the PET layer 22 is a complete surface.
[0022] Advantageously, a fold 21 is provided on one side of the base paper layer 13 away from the concave hole 12 . There are multiple folds 21 , and multiple line segments are formed on a straight line between the folds 21 . The folds 21 are provided to facilitate separation of the base paper layer 13 from the middle.
[0023] Advantageously, when the release paper is processed, the PE layer 14 is first formed by a dipping process or a similar existing process using one side of the base paper layer 13, and then the concave holes 12 and the folds 21 are processed on the base paper layer 13 and the PE layer 14 by means of mold indentation. During this process, the mold will not penetrate the release paper, but will only leave indentations; thereafter, silicone oil is brushed on one side of the PE layer 14 to form a silicone oil layer 15. Since the concave holes 12 are sunken, the silicone oil layer 15 is filled on one side of the PE layer 14 when it is brushed on one side of the PE layer 14; and then the PET layer 22 is attached to one side of the silicone oil layer 15.
[0024] Since a plurality of recessed holes 12 are formed in the base paper layer 13 , the PE layer 14 is coated on the base paper layer 13 and the recessed holes 12 , and the silicone oil layer 15 is then coated on one side of the PE layer 14 . The silicone oil layer 15 completely fills the PE layer 14 on one side of the recessed holes 12 , and then overflows to form a complete surface to be bonded to the PET layer 22 .
[0025] The complete surface includes a plane or a curved surface.
[0026] Furthermore, due to the dot matrix arrangement of the recessed holes 12, when the PET layer 22 is attached, the silicone oil layer 15 retained in the recessed holes 12 can also be utilized to diffuse to the bonding surface between the silicone oil layer 15 and the PET layer 22 when the PET layer 22 is attached, thereby further avoiding uneven contact between the silicone oil layer 15 and the PET layer 22, so that the silicone oil layer 15 and the PET layer 22 are evenly bonded, thereby increasing the ease of peeling off the PET layer 22 and the silicone oil layer 15.
[0027] Moreover, compared with the silicone oil layer 15 directly coated on one side, the silicone oil layer 15 retained in the recessed hole 12 can increase the retention amount of the silicone oil layer 15, thereby increasing the duration of the silicone oil layer 15 and making it easier to peel off the PET layer 22.
[0028] The above are only specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model; therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.
Claims
1. A composite film release paper for thermal transfer printing, comprising a base paper layer (13), a PE layer (14) is arranged on one side of the base paper layer (13), a silicone oil layer (15) is arranged on one side of the PE layer (14), and a PET layer (22) is arranged on one side of the silicone oil layer (15), characterized in that: A plurality of concave holes (12) are arranged on one end surface of the base paper layer (13), and the silicone oil layer (15) completely fills the PE layer (14) on one side of the concave holes (12), and then overflows to form a complete surface to be bonded to the PET layer (22).
2. The composite film release paper for thermal transfer printing according to claim 1, characterized in that: The PE layer (14) is arranged on one end surface of the base paper layer (13) and inside the end wall of the concave hole (12).
3. The composite film release paper for thermal transfer printing according to claim 1, characterized in that: The contact mode between the silicone oil layer (15) and the PET layer (22) is surface contact.
4. The composite film release paper for thermal transfer printing according to claim 3, characterized in that: Surface contact includes planar or curved surface contact.
5. The composite film release paper for thermal transfer printing according to claim 1, characterized in that: The concave holes (12) are arranged in an array.
6. The composite film release paper for thermal transfer printing according to claim 5, characterized in that: The concave holes (12) are arranged in an array along the vertical and horizontal directions.
7. The composite film release paper for thermal transfer printing according to claim 1, characterized in that: A fold mark (21) is also provided on the side of the base paper layer (13) away from the concave hole (12).
8. The composite film release paper for thermal transfer printing according to claim 7, characterized in that: A plurality of folds (21) are provided.
9. The composite film release paper for thermal transfer printing according to claim 8, characterized in that: The folds (21) form a plurality of line segments on a straight line.