PET label and base film stripping device thereof

Abstract

The invention discloses a PET label and a base film stripping device thereof, and relates to the technical field of PET labels, and the PET label comprises a base film layer, an adhesive layer and a label layer; ceramic powder is added to the acrylic resin coating to form the label layer, the comprehensive performance of the PET label is improved, meanwhile, the flame retardant property of the PET label can be improved, the waterproof performance of the PET label is improved, meanwhile, the adhesive property of the PET label can be improved by adding the waterproof agent and the coupling agent into the adhesive layer, and the service life of the PET label is prolonged. The PET label roller and the base film roller are clamped and fixed on the front face of the mounting plate through the adjustable clamping mechanism, so that the label base film stripping device of the PET label is convenient to adjust, label paper rollers and base film rollers of different specifications can be mounted, the limiting plates on the front side and the rear side of the top end of the limiting box are driven by the limiting adjusting mechanism to move oppositely, and the stripping efficiency is improved. And the PET label and the base film in the conveying process are effectively limited and guided.

Description

Technical Field

[0001] The present invention relates to the technical field of PET labels, and in particular to a PET label and a base film peeling device thereof. Background Art

[0002] Polyethylene terephthalate (PET) is prepared by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol to first synthesize bis(2-hydroxyethyl) terephthalate, and then by polycondensation reaction. It belongs to a crystalline saturated polyester, is a milky white or light yellow, highly crystalline polymer, with a smooth and shiny surface, and is a common resin in life. A PET label is a polymer material label made of a polyester film (Polyethylene Terephthalate, abbreviated as PET), and this label is widely used due to its unique physical and chemical properties.

[0003] During the use of PET labels, it is necessary to first tear the PET label paper from the base film before subsequent pasting work. In order to improve the tearing efficiency of the base film, a peeling machine is required. The label peeling machine is used for the automatic peeling of the label base film. After the peeled label is taken, the next label is automatically peeled, improving the efficiency of workers taking the labels.

[0004] Existing PET labels do not have good mechanical properties, have poor adhesion ability, are easy to fall off, and their flame retardant and waterproof abilities also need to be improved, making them not suitable for application in harsh environments such as high temperature and humidity. Most of the existing PET label base film peeling devices have fixed structures, are not easy to adjust, and cannot install label paper rollers and base film rollers of different specifications, resulting in the inability to be applicable to different specifications of PET label paper for base film peeling work. Moreover, during the PET label base film peeling process, the PET label paper during transmission cannot be effectively limited and guided, resulting in the problem that the PET label paper is prone to deviation, thus affecting the base film peeling accuracy of the PET label. Therefore, the present invention proposes a PET label and a base film peeling device thereof to solve the problems existing in the prior art. Summary of the Invention

[0005] Aiming at the above problems, the purpose of the present invention is to propose a PET label and a base film peeling device thereof, which solve the problems that existing PET labels do not have good mechanical properties, have poor adhesion ability, are easy to fall off, and their flame retardant and waterproof abilities also need to be improved, and that existing PET label base film peeling devices cannot be applicable to different specifications of PET label paper for base film peeling work and cannot effectively limit and guide the PET label paper during transmission.

[0006] To achieve the object of the present invention, the present invention is realized by the following technical solutions: a PET label, comprising a base film layer, an adhesive layer and a label layer, wherein the label layer is bonded to the top of the base film layer through the adhesive layer, and the base film layer is a Graffix release paper.

[0007] Further improvement lies in that: the adhesive layer is prepared by mixing acrylic adhesive, waterproofing agent and coupling agent, and the mixing mass ratio of the acrylic adhesive, waterproofing agent and coupling agent is 10:1:1.

[0008] Further improvement lies in that: the label layer is made by coating an acrylic resin coating on the surface of a PET film, and ceramic powder is doped in the acrylic resin coating according to a mass ratio of 10:1.

[0009] A base film peeling device for a PET label, comprising a bottom plate and a top plate, a vertical plate is fixed between the bottom plate and the top plate, mounting plates driven to rotate by motors are arranged on both sides of the front surface of the vertical plate, and a PET label roll and a base film roll are respectively clamped by adjustable clamping mechanisms on one sides of the two mounting plates away from the vertical plate. A PET label tape is wound around the PET label roll, and a base film layer is wound around the base film roll. A material taking port is opened at the top end of the top plate, a support roll rotatably connected to the front surface of the vertical plate is arranged below the material taking port, and guide rolls rotatably connected to the front surface of the vertical plate are arranged on both sides below the support roll. A support frame is fixed at the top end of the top plate, an elastic telescopic rod is fixed at the inner top end of the support frame, and a film peeling blade extending to the inside of the material taking port and at the same horizontal plane as the top end of the support roll is fixed at the bottom end of the elastic telescopic rod. Limit boxes are symmetrically fixed at the top end of the bottom plate, and limit plates driven to displace by a limit adjusting mechanism are arranged symmetrically at the top ends of the limit boxes.

[0010] Further improvement lies in that: the output end of the motor penetrates through the vertical plate through a bearing and is fixed with a driving sprocket, a rotating shaft is fixed on one side of the mounting plate close to the vertical plate, and the end of the rotating shaft away from the mounting plate penetrates through the vertical plate through a bearing and is fixed with a driven sprocket, and a chain is sleeved on the driving sprocket and the driven sprocket together.

[0011] Further improvement lies in that: a limiting outer ring is arranged on one side of the mounting plate close to the vertical plate, a limiting inner ring located inside the limiting outer ring is fixed on one side of the vertical plate close to the mounting plate, and rollers symmetrically distributed and contacting the inner wall of the limiting outer ring are rotatably connected to the limiting inner ring.

[0012] Further improvement lies in that: the adjustable clamping mechanism comprises a first bidirectional lead screw rotatably connected to the inside of the mounting plate and driven to rotate by a motor, and threaded plates threadedly sleeved on both sides of the first bidirectional lead screw. The ends of the threaded plates away from the vertical plate slide through to the outside of the mounting plate and are provided with arc-shaped clamping pieces, and rubber anti-slip pads are fixed on the outer walls of the arc-shaped clamping pieces.

[0013] A further improvement lies in that: the elastic telescopic rod includes a sleeve fixed to the inner top end of the support frame and a top rod slidably disposed within the sleeve. The bottom end of the top rod slidably penetrates to the outside of the sleeve and is fixed to the top end of the film stripping blade. A limiting spring is fixed between the top end of the top rod and the inner top end of the sleeve.

[0014] A further improvement lies in that: the limit adjusting mechanism includes a second bidirectional screw rod rotatably connected to the inside of the limit box and threaded blocks threadedly sleeved on both sides of the second bidirectional screw rod. The bottom end of the limit plate slidably penetrates to the inside of the limit box and is fixed to the top end of the threaded block. One end of the second bidirectional screw rod away from the vertical plate penetrates to the outside of the limit box through a bearing and is fixed with a knob.

[0015] The beneficial effects of the present invention are as follows: by adding ceramic powder to the acrylic resin coating to form a label layer, while improving the comprehensive performance of the PET label, the flame retardant performance of the PET label can also be improved. And by adding a waterproof agent and a coupling agent to the adhesive layer, while improving the waterproof performance of the PET label, its bonding performance can also be improved, enabling it to have better adhesion ability and being convenient for application in harsh environments such as high temperature and humidity.

[0016] By clamping and fixing the PET label roll and the base film roll on the front of the mounting plate through an adjustable clamping mechanism, the label base film stripping device of the PET label is convenient to adjust, can install label paper rollers and base film rollers of different specifications, and can thus be applicable to the base film stripping work of PET label papers of different specifications, with high applicability. And through the limit adjusting mechanism, the limit plates on the front and rear sides of the top end of the limit box are driven to displace towards each other, and effectively limit and guide the PET label and the base film during the transmission process, thereby avoiding the problem that the PET label paper is prone to deviation, and further ensuring the base film stripping accuracy of the PET label. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic cross-sectional structure view of the PET label in Embodiment 1 of the present invention;

[0019] Figure 2 is a front view of the base film stripping device of the PET label in Embodiment 2 of the present invention;

[0020] Figure 3 is a front cross-sectional view of the base film stripping device of the PET label in Embodiment 2 of the present invention;

[0021] Figure 4 It is a side sectional view of the base film peeling device of the PET label in the second embodiment of the present invention;

[0022] Figure 5 It is a side sectional view of the limit box of the base film peeling device of the PET label in the second embodiment of the present invention;

[0023] Figure 6 It is a sectional view of the elastic telescopic rod of the base film peeling device of the PET label in the second embodiment of the present invention.

[0024] Wherein: 1. Base film layer; 2. Adhesive layer; 3. Label layer; 4. Bottom plate; 5. Top plate; 6. Vertical plate; 7. Motor; 8. Mounting plate; 9. PET label roll; 10. Base film roll; 11. Feeding port; 12. Support roll; 13. Guide roll; 14. Support frame; 15. Elastic telescopic rod; 16. Film peeling blade; 17. Limit box; 18. Limit plate; 19. Driving sprocket; 20. Rotating shaft; 21. Driven sprocket; 22. Limit outer ring; 23. Limit inner ring; 24. Roller; 25. Motor; 26. First double lead screw; 27. Threaded plate; 28. Arc-shaped clip; 29. Sleeve; 30. Thrust rod; 31. Limit spring; 32. Second double lead screw; 33. Threaded block; 34. Knob. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1

[0027] See Figure 1, this embodiment provides a PET label, which includes a base film layer 1, an adhesive layer 2, and a label layer 3 distributed in sequence from bottom to top. The label layer 3 is adhered to the top of the base film layer 1 through the adhesive layer 2. When in use, the label layer 3 can be torn off from the surface of the base film layer 1 and used as a PET label. The base film layer 1 is a glassine release paper. The adhesive layer 2 is prepared by mixing acrylic adhesive, waterproofing agent, and coupling agent in a mass ratio of 10:1:1. The label layer 3 is made by coating an acrylic resin coating on the surface of a PET film. The acrylic resin coating is also doped and mixed with ceramic powder, and the mass ratio of acrylic resin to ceramic powder is 10:1. By adding ceramic powder to the acrylic resin coating, while improving the comprehensive performance of the PET label, the flame retardant performance of the PET label can also be improved. By adding a waterproofing agent and a coupling agent to the adhesive layer 2, while improving the waterproof performance of the PET label, its bonding performance can also be improved, enabling it to have better adhesion ability and facilitating its application in harsh environments such as high temperature and humidity.

[0028] Example Two

[0029] See Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6, this embodiment discloses a base film peeling device for PET labels, including a horizontally arranged bottom plate 4 and a top plate 5 located directly above the bottom plate 4. The bottom plate 4 and the top plate 5 are fixedly connected by a vertical plate 6. The vertical plate 6 is located at the rear side between the bottom plate 4 and the top plate 5. Motors 7 are fixedly installed on both the left and right sides of the top end of the bottom plate 4 by bolts. Installation plates 8 are provided on both the left and right sides of the front surface of the vertical plate 6, and the two groups of installation plates 8 are respectively driven to rotate by the two motors 7. Among them, a PET label roller 9 for winding the PET label tape is clamped on the front surface of the right installation plate 8 through an adjustable clamping mechanism, and a base film roller 10 for winding the PET label base film layer 1 is clamped on the front surface of the left installation plate 8 through an adjustable clamping mechanism. The PET label tape is wound on the PET label roller 9. By clamping and fixing the PET label roller 9 and the base film roller 10 through the adjustable clamping mechanism on the front surface of the installation plate 8, the label base film peeling device for PET labels is convenient to adjust and can install label paper rollers and base film rollers of different specifications. A material taking port 11 for facilitating the taking of PET labels is opened at the middle position of the top end of the top plate 5. A support roller 12 is provided below the material taking port 11, and the support roller 12 is rotatably connected to the front surface of the vertical plate 6 through a bearing. Guide rollers 13 are provided on both the left and right sides below the support roller 12, and the two groups of guide rollers 13 are rotatably connected to the front surface of the vertical plate 6 through bearings. A support frame 14 located above the material taking port 11 is fixedly installed on the top end of the top plate 5 by bolts. An elastic telescopic rod 15 is fixedly installed at the inner top end of the support frame 14 by screws. The bottom end of the elastic telescopic rod 15 is fixed with a film peeling blade 16. The film peeling blade 16 extends into the inner side of the material taking port 11 and is at the same horizontal plane as the top end of the support roller 12. When the PET label tape passes over the support roller 12, it can be peeled off by the film peeling blade 16. Limit boxes 17 are fixedly installed on both the left and right sides of the top end of the bottom plate 4 through support rods. Limit plates 18 distributed symmetrically in the front and rear are provided at the top end of the limit box 17, and the front and rear two groups of limit plates 18 are driven to displace through a limit adjustment mechanism. By driving the limit plates 18 on both the front and rear sides of the top end of the limit box 17 to displace towards each other through the limit adjustment mechanism, effective limit and guidance are provided for the PET labels and the base film during the transmission process, thus avoiding the problem that the PET label paper is prone to deviation.

[0030] The output end of the motor 7 penetrates through the vertical plate 6 through a bearing and is fixed with a driving sprocket 19. A rotating shaft 20 is fixed on the side of the installation plate 8 close to the vertical plate 6. The end of the rotating shaft 20 away from the installation plate 8 penetrates through the vertical plate 6 through a bearing and is fixed with a driven sprocket 21. A chain is sleeved on the driving sprocket 19 and the driven sprocket 21 and they are connected by chain drive. By driving the driving sprocket 19 to rotate by the motor 7, the driving sprocket 19 drives the driven sprocket 21 to rotate through the chain, and then drives the installation plate 8 to rotate through the rotating shaft 20.

[0031] An outer limiting ring 22 is provided on one side of the mounting plate 8 close to the vertical plate 6, and an inner limiting ring 23 located inside the outer limiting ring 22 is fixed on the side of the vertical plate 6 close to the mounting plate 8. The inner limiting ring 23 is rotatably connected with rollers 24 which are symmetrically distributed and in contact with the inner wall of the outer limiting ring 22, playing a role of limiting support, so that the mounting plate 8 is more stable during rotation.

[0032] The adjustable clamping mechanism includes a first bidirectional screw rod 26 which is rotatably connected to the inside of the mounting plate 8 and driven to rotate by a motor 25, and a threaded plate 27 which is threadedly sleeved on both sides of the first bidirectional screw rod 26. The end of the threaded plate 27 away from the vertical plate 6 slides through the outside of the mounting plate 8 and has an arc-shaped clamping piece 28. A rubber anti-slip pad is fixed on the outer wall of the arc-shaped clamping piece 28. The first bidirectional screw rod 26 is driven to rotate by the motor 25, so that the threaded plates 27 on both sides of the first bidirectional screw rod 26 are displaced toward or in opposite directions, thereby clamping and fixing PET label rollers 9 and base film rollers 10 with different inner diameter specifications.

[0033] The elastic telescopic rod 15 includes a sleeve 29 fixed to the top inner side of the support frame 14 and a push rod 30 slidably arranged in the sleeve 29. The bottom end of the push rod 30 slides through the outside of the sleeve 29 and is fixed to the top of the film stripping blade 16. A limiting spring 31 is fixed between the top of the push rod 30 and the top of the sleeve 29. The limiting spring 31 provides elastic force for the push rod 30, so that the film stripping blade 16 can receive a downward elastic force, thereby contacting the PET label tape at the top of the support roller 12, so that the base film of the PET label tape is peeled off.

[0034] The limit adjustment mechanism includes a second bidirectional screw rod 32 rotatably connected to the inside of the limit box 17 and threaded blocks 33 threadedly sleeved on both sides of the second bidirectional screw rod 32. The bottom end of the limit plate 18 slides through the inside of the limit box 17 and is fixed to the top of the threaded block 33. The end of the second bidirectional screw rod 32 away from the vertical plate 6 passes through the outside of the limit box 17 through a bearing and is fixed with a knob 34. The second bidirectional screw rod 32 is driven to rotate by the knob 34, so that the threaded blocks 33 on both sides of the second bidirectional screw rod 32 drive the limit plate 18 to move, so as to limit and guide PET label tapes of different width specifications.

[0035] When the label base film peeling device of the PET label is in use, the PET label tape is pre-wound around the outside of the PET label roller 9. The PET label roller 9 is clamped and fixed on the mounting plate 8 on the right side through an adjustable clamping mechanism, and the base film roller 10 is clamped and fixed on the mounting plate 8 on the left side through the adjustable clamping mechanism. Then, the PET label tape on the PET label roller 9 is pulled out and passes through the right guide roller 13 and the support roller 12 in sequence. When passing through the support roller 12, under the action of the film peeling blade 16, the base film and the label of the PET label tape are separated. The base film passes through the left guide roller 13 and is fixed on the base film roller 10, while the label is intercepted on the upper surface of the film peeling blade 16 for the staff to take down and use for pasting. Subsequently, two groups of motors 7 are started to drive the PET label roller 9 and the base film roller 10 to rotate respectively. The PET label roller 9 unwinds the PET label tape, and the base film roller 10 winds up the base film, realizing the transmission of the PET label tape from right to left. During the transmission process, the base film is peeled off from below the label by the film peeling blade 16 (when there is a label on the film peeling blade 16, it is taken down by the staff in time), realizing the peeling of the label base film of the PET label;

[0036] During the transmission of the PET label tape, the limiting plates 18 on the front and rear sides of the top of the limiting box 17 are driven by the limiting adjustment mechanism to move towards each other until the two groups of limiting plates 18 are in contact with the front and rear sides of the PET label and the base film respectively and limit them, so that the PET label and the base film can remain stable during the transmission process and will not shift.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PET label, characterized in that: The invention comprises a base film layer (1), an adhesive layer (2) and a label layer (3), wherein the label layer (3) is bonded to the top of the base film layer (1) through the adhesive layer (2), and the base film layer (1) is glassine release paper.

2. A PET label according to claim 1, characterized in that: The adhesive layer (2) is prepared by mixing an acrylic adhesive, a waterproofing agent and a coupling agent, and the mixing mass ratio of the acrylic adhesive, the waterproofing agent and the coupling agent is 10:1:

1.

3. A PET label according to claim 1, characterized in that: The label layer (3) is made of an acrylic resin coating coated on the surface of a PET film, wherein the acrylic resin coating is doped with ceramic powder at a mass ratio of 10:

1.

4. A base film peeling device for a PET label according to claim 1, comprising a bottom plate (4) and a top plate (5), characterized in that: A vertical plate (6) is fixed between the bottom plate (4) and the top plate (5), and mounting plates (8) driven to rotate by a motor (7) are provided on both sides of the front of the vertical plate (6), and a PET label roller (9) and a base film roller (10) are clamped on the side away from the vertical plate (6) by an adjustable clamping mechanism, respectively. A PET label tape is wound around the PET label roller (9), and a base film layer (1) is wound around the base film roller (10). A material taking port (11) is provided at the top of the top plate (5), and a support roller (11) rotatably connected to the front of the vertical plate (6) is provided below the material taking port (11). 12), guide rollers (13) rotatably connected to the front of the vertical plate (6) are provided on both sides below the support roller (12), a support frame (14) is fixed on the top of the top plate (5), an elastic telescopic rod (15) is fixed on the top of the inner side of the support frame (14), a film stripping blade (16) extending to the inner side of the material taking port (11) and being in the same horizontal plane as the top of the support roller (12) is fixed on the bottom end of the elastic telescopic rod (15), a limit box (17) is symmetrically fixed on the top of the bottom plate (4), and a limit plate (18) driven to move by a limit adjustment mechanism is symmetrically provided on the top of the limit box (17).

5. The base film peeling device for a PET label according to claim 4, characterized in that: The output end of the motor (7) passes through the vertical plate (6) through a bearing and is fixed with a driving sprocket (19); a rotating shaft (20) is fixed on the side of the mounting plate (8) close to the vertical plate (6); an end of the rotating shaft (20) away from the mounting plate (8) passes through the vertical plate (6) through a bearing and is fixed with a driven sprocket (21); a chain is sleeved on the driving sprocket (19) and the driven sprocket (21).

6. The base film peeling device for a PET label according to claim 4, characterized in that: A limiting outer ring (22) is provided on one side of the mounting plate (8) close to the vertical plate (6), and a limiting inner ring (23) located inside the limiting outer ring (22) is fixed on one side of the vertical plate (6) close to the mounting plate (8), and rollers (24) symmetrically distributed and in contact with the inner wall of the limiting outer ring (22) are rotatably connected to the limiting inner ring (23).

7. The base film peeling device for a PET label according to claim 4, characterized in that: The adjustable clamping mechanism comprises a first bidirectional screw (26) rotatably connected to the inside of the mounting plate (8) and driven to rotate by a motor (25), and a threaded plate (27) threadedly sleeved on both sides of the first bidirectional screw (26); one end of the threaded plate (27) away from the vertical plate (6) slides through the outside of the mounting plate (8) and has an arc-shaped clamping piece (28); a rubber anti-skid pad is fixed on the outer wall of the arc-shaped clamping piece (28).

8. The base film peeling device for a PET label according to claim 4, characterized in that: The elastic telescopic rod (15) comprises a sleeve (29) fixed to the inner top end of the support frame (14) and a push rod (30) slidably arranged in the sleeve (29); the bottom end of the push rod (30) slides through the outside of the sleeve (29) and is fixed to the top end of the film stripping blade (16); a limit spring (31) is fixed between the top end of the push rod (30) and the inner top end of the sleeve (29).

9. The base film peeling device for a PET label according to claim 4, characterized in that: The limit adjustment mechanism comprises a second bidirectional screw (32) rotatably connected to the inside of the limit box (17) and threaded blocks (33) threadedly sleeved on both sides of the second bidirectional screw (32); the bottom end of the limit plate (18) slides through the inside of the limit box (17) and is fixed to the top of the threaded block (33); the end of the second bidirectional screw (32) away from the vertical plate (6) passes through the outside of the limit box (17) through a bearing and is fixed with a knob (34).

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