TPU grating printing film

Abstract

The utility model discloses a TPU (thermoplastic polyurethane) grating printing film, which relates to the technical field of TPU printing films, aims to solve the technical problem of poorer grating effect, and comprises a bottom printing layer, a middle TPU grating layer is attached to one side of the bottom printing layer, and a surface BOPET (biaxially oriented polyethylene terephthalate) layer is arranged on one side of the middle TPU grating layer far away from the bottom printing layer. The surface BOPET layer and the middle TPU grating layer are fixed in a heating compounding mode, and an anti-UV layer is arranged between the middle TPU grating layer and the surface BOPET layer. The convex parts and the concave parts are attached to each other, gaps are designed between the concave parts and the convex parts, and then heating compounding is carried out, so that the size of the concave parts is approximately larger than that of the convex parts, the concave parts can shrink and are tightly attached to the convex parts, the machining stability is achieved, and the possibility of deformation of the concave parts is reduced; and different grating effects can be achieved through the design of different concave and convex shapes, so that the grating effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of TPU printed film technology, and more specifically, to a TPU grating printed film. Background Technology

[0002] TPU printing represents an evolution of modern printing technology. Its main raw material is thermoplastic polyurethane, which boasts high strength, wear resistance, temperature resistance, and flexibility. However, TPU lenticular printing film involves covering the surface of a printed film with a lenticular layer. During the surface covering process, deformation can easily occur, resulting in poor lenticular effects. Therefore, we propose a TPU lenticular printing film. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a TPU grating printing film to solve the current technical problem of poor grating effect.

[0004] To solve the above technical problems, the present invention provides the following technical solution: a TPU grating printing film, comprising a bottom printing layer, an intermediate TPU grating layer attached to one side of the bottom printing layer, a surface BOPET layer disposed on the side of the intermediate TPU grating layer away from the bottom printing layer, the surface BOPET layer and the intermediate TPU grating layer being fixed together by heat bonding, and an anti-UV layer disposed between the intermediate TPU grating layer and the surface BOPET layer.

[0005] Preferably, the anti-UV layer includes a plurality of arrayed protrusions, which are rolled onto the side of the intermediate TPU grating layer near the surface BOPET layer. Each of the protrusions has a corresponding plurality of recesses on one side, and the recesses are in the same position as the protrusions.

[0006] Preferably, the recessed portion is located on the BOPET layer, and the cross-section of the recessed portion and the protrusion has the same shape.

[0007] Preferably, a shrinkage gap is provided between the recessed portion and the protruding portion before the composite is formed.

[0008] Preferably, the protrusions and recesses are semi-circular in shape.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The utility model discloses a convex part and recessed part's mutual adhesion and the gap design between recessed part and convex part, through heating compound again, recessed part size is about greater than convex part, and it will shrink, make it and the close adhesion of convex part, realize the stability of processing, reduce its possibility of deformation, and still can reach different grating effect through the design of different shape recessed and convex shape, further solve the problem of poor grating effect. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the structure schematic diagram of the utility model;

[0012] Fig. 2 It is the section structure schematic diagram in the utility model;

[0013] Fig. 3 It is the exploded view schematic diagram in the utility model.

[0014] Mark number explanation: 1, bottom printing layer;2, intermediate TPU grating layer;3, surface BOPET layer;4, reverse UV layer;401, convex part;402, recessed part. DETAILED DESCRIPTION

[0015] As Figs. 1 to 3 The utility model discloses a kind of TPU grating printing film, it is sequentially arranged including bottom printing layer 1, intermediate TPU grating layer 2 and surface BOPET layer 3, bottom printing layer 1 preferably BP film, intermediate TPU grating layer 2 is fused extruded, then attached on bottom printing layer 1, reverse UV layer 4 is arranged between intermediate TPU grating layer 2 and surface BOPET layer 3, reverse UV layer 4 includes multiple array distribution's convex part 401, convex part 401 is set to one side of intermediate TPU grating layer 2 close to surface BOPET layer 3 by rolling, multiple convex part 401 side is provided with corresponding multiple recessed part 402, multiple recessed part 402 and multiple convex part 401 position are same, recessed part 402 is on surface BOPET layer 3, the section of recessed part 402 and convex part 401 is same shape, the form of convex part 401 and recessed part 402 is preferably semicircular, wherein surface BOPET layer 3 and intermediate TPU grating layer 2 are fixed by heating compound mode.

[0016] It needs to be explained that, recessed part 402 and convex part 401 are provided with shrinkage gap before compound.

[0017] Working principle, by the design of heating compound, during the process of compound heating, film will shrink, make convex part 401 and recessed part 402 compound complete, form semicircular grating effect, wherein other shape convex part 401 and recessed part 402 can be selected to realize other grating effect.

[0018] The utility model discloses an embodiment discloses the better embodiment, but is not limited to this, and the ordinary skill of the art, the spirit of the utility model is appreciated to the above -mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are in the protection range of the utility model.

Claims

1. A TPU lenticular printed film characterized in that, It comprises a bottom printing layer (1), one side of which is attached to an intermediate TPU grating layer (2), the far side of which from the bottom printing layer (1) is provided with a surface BOPET layer (3), the surface BOPET layer (3) and the intermediate TPU grating layer (2) are fixed by heating and compounding, and an anti-UV layer (4) is arranged between the intermediate TPU grating layer (2) and the surface BOPET layer (3).

2. The TPU lenticular printed film according to claim 1, wherein, The anti-UV layer (4) comprises a plurality of arrayed protrusions (401), which are arranged on one side of the intermediate TPU grating layer (2) close to the surface BOPET layer (3) by rolling, one side of the plurality of protrusions (401) is provided with a plurality of corresponding recesses (402), and the plurality of recesses (402) are located at the same positions as the plurality of protrusions (401).

3. The TPU lenticular printed film of claim 2, wherein, The recesses (402) are on the surface BOPET layer (3), and the cross sections of the recesses (402) and the protrusions (401) are of the same shape.

4. The TPU lenticular printed film of claim 3, wherein, Before compounding, a shrinkage gap is arranged between the recesses (402) and the protrusions (401).

5. The TPU lenticular printed film according to claim 4, wherein, The protrusions (401) and the recesses (402) are semicircular in shape.

Images