CN113635635A - Easily-stripped PET (polyethylene terephthalate) protective film and preparation process thereof - Google Patents
Easily-stripped PET (polyethylene terephthalate) protective film and preparation process thereof Download PDFInfo
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- CN113635635A CN113635635A CN202110886665.7A CN202110886665A CN113635635A CN 113635635 A CN113635635 A CN 113635635A CN 202110886665 A CN202110886665 A CN 202110886665A CN 113635635 A CN113635635 A CN 113635635A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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Abstract
The invention discloses an easy-to-peel PET protective film and a preparation process thereof, wherein the PET protective film comprises the following components: the waterproof layer, the line pressure layer, the conducting layer, the PET substrate layer, the adhesive layer and the release film layer are sequentially connected from top to bottom, and the line pressure layer is made of thermally-induced expansion elastic materials. The invention provides an easily-stripped PET (polyethylene terephthalate) protective film, when the temperature of the PET protective film rises, a material on a grain pressing layer expands, and because the protrusion density of the outer side is greater than that of the inner side, the deformation of the outer side of the grain pressing layer is greater than that of the inner side of the grain pressing layer, so that the edge of the protective film is tilted, the protective film is conveniently stripped, and the use convenience is improved.
Description
Technical Field
The invention relates to the technical field of PET (polyethylene terephthalate) protective films, in particular to an easily-stripped PET protective film and a preparation process thereof.
Background
PET, that is, polyethylene terephthalate, is a highly crystalline polymer having excellent properties of wear resistance, electrical insulation, flame retardancy, thermal aging resistance, low water absorption, etc., and thus, a PET protective film having a special protective property is widely used in electronic products such as computers, digital cameras, and mobile phones, etc., and is attached to the surface thereof to prevent damage and contamination. The existing PET protective film is mainly manufactured by adhering a layer of release film and a layer of PET protective film base material together, namely, the PET protective film base material is coated with glue and then is adhered with a layer of release film. After use, the PET protective film is peeled off and removed manually or by a robot. The existing PET protective film is difficult to peel, so in order to peel the PET protective film conveniently and efficiently and improve the use convenience, the design of the easily peeled PET protective film and the preparation process thereof are urgently needed.
Disclosure of Invention
In order to solve the technical problem, the invention discloses an easily-stripped PET protective film and a preparation process thereof, wherein the PET protective film is formed by sequentially bonding a waterproof layer, a grain pressing layer, a conductive layer, a PET base material layer, an adhesive layer and a release film layer, when the temperature of the PET protective film rises, the material on the grain pressing layer expands, and because the protrusion density of the outer side is greater than that of the inner side, the deformation of the outer side of the grain pressing layer is greater than that of the inner side of the grain pressing layer, the edge of the protective film is tilted, so that the protective film is conveniently stripped, and the use convenience is improved; its PET protection film includes:
the waterproof layer, the line pressure layer, the conducting layer, the PET substrate layer, the adhesive layer and the release film layer are sequentially connected from top to bottom, and the line pressure layer is made of thermally-induced expansion elastic materials.
Preferably, the embossing layer comprises a plurality of concentrically arranged circular protrusions, and the distance between every two adjacent protrusions is reduced from inside to outside in sequence.
Preferably, the ratio of the area of the protrusions accounts for 30 to 70 percent of the total area.
Preferably, the surface of the waterproof layer is coated with a polymer antistatic liquid.
Preferably, the waterproof layer, the embossing layer, the conductive layer and the PET substrate layer are bonded by pressure-sensitive adhesive.
Preferably, the preparation process of the easy-to-peel PET protective film comprises the following steps:
s1, winding the PET protective film base material on an unwinding roller, driving the unwinding roller to rotate, and unwinding the PET protective film base material;
s2, enabling the PET protective film base material to enter a cleaning device, and cleaning the PET protective film base material through the cleaning device;
s3, enabling the PET protective film base material to enter a coating machine, coating an adhesive layer on one side of the PET protective film base material, and then compounding a release film layer on the adhesive layer to form a protective film semi-finished product;
s4, sequentially coating a pressure-sensitive adhesive, a composite conductive layer, a pressure-sensitive adhesive, a composite embossing layer, a pressure-sensitive adhesive and a composite waterproof layer on the other side of the PET protective film substrate;
s5, feeding the PET protective film formed in the S4 into a dryer, and drying the PET protective film;
s6, enabling the PET protective film to enter a laminating mechanism, and laminating the PET protective film;
and S7, winding the prepared PET protective film on a winding roller.
Preferably, the cleaning device includes:
a base;
the door frame is buckled above the base;
the sliding frame is arranged in an N shape, and the vertical rod of the sliding frame is connected to the top end of the portal in a sliding manner;
the two ends of the cleaning roller are detachably connected between the vertical rods of the sliding frame;
the cleaning block is connected to the bottom end of the cleaning roller;
the film pressing roller is rotationally connected to the bracket at the top end of the base, and the cleaning roller and the film pressing roller are arranged in a matching manner;
the positioning devices are connected to two side ends of the gantry and connected with the bottom end of the sliding frame;
the dust suction device is connected to the base and arranged below the film pressing roller.
Preferably, the positioning device comprises:
the first sliding groove is vertically arranged on the inner side of the door frame;
one end of the sliding block is connected in the first sliding groove in a sliding mode, and the other end of the sliding block is connected with the bottom end of the sliding frame;
the second sliding chute is arranged at one end, close to the first sliding chute, of the sliding block;
the limiting rod is connected in the second sliding groove in a sliding manner;
the limiting hole is formed in the outer side of the portal frame and communicated with the first sliding groove, and the limiting rod is clamped in the limiting hole;
the first spring is connected between the top end of the sliding block and the top end of the first sliding chute;
and the second spring is connected between the limiting rod and the bottom end of the second sliding groove.
Preferably, the dust suction apparatus includes:
the first shell is fixedly connected to the bottom end of the base and comprises a sealing cavity and an installation cavity which are arranged from top to bottom;
the motor is arranged at the bottom end of the mounting cavity and is electrically connected with the controller;
the bottom end of the rotating rod is connected with the output end of the motor, and the top end of the rotating rod extends into the sealing cavity;
the two sealing plates are connected to the top end and the bottom end of the sealing cavity;
the ball is rotationally connected between the two sealing plates and is connected with the top end of the rotating rod;
the rotating plate is fixedly connected to the side end of the ball, and the rotating plate is in sliding connection with the inner wall of the sealing cavity;
the partition plate is vertically connected to the center of the sealing cavity;
one end of the gas pipeline is connected to the side end of the sealing cavity, communication ports of the gas pipeline and the sealing cavity are arranged above the rotating plate, and the two communication ports of the gas pipeline are symmetrically arranged relative to the vertical central line of the sealing cavity;
the third sliding chute is arranged at the top end of the base;
the dust collection pipe is connected in the third sliding groove in a sliding manner and is connected with a dust collection pump;
and one end of the telescopic pipe is connected to the side end of the dust collection pipe, the other end of the telescopic pipe is connected with the side wall of the third sliding groove, the two telescopic pipes are symmetrically arranged, and the other end of the gas pipeline penetrates through the base and is communicated with the other end of the telescopic pipe.
Preferably, a driving device is connected to the outer side of the door frame, and the driving device includes:
the second shell is fixedly connected to the outer side of the door clamp;
the rotating shaft is rotatably connected to the inner wall of the second shell, and one end of the rotating shaft penetrates through the second shell and is connected with a handle;
the elliptic rotating disc is connected to the rotating shaft;
the two friction wheels are rotationally connected to the inner wall of the second shell and are in contact with the long shaft end of the elliptic rotating disc;
the first connecting rod is fixedly connected to the rotating shaft and corresponds to the short shaft of the elliptic turntable in position;
the push rod is connected to the side end of the second shell in a sliding mode and is arranged corresponding to the limiting hole;
and the second connecting rod is hinged between the first connecting rod and the push rod.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a PET protective film according to the present invention;
FIG. 2 is a schematic view of a structure of a textured laminate of the present invention;
FIG. 3 is a schematic view of the cleaning device of the present invention;
FIG. 4 is an enlarged view of a portion of the structure shown in FIG. 3A according to the present invention;
FIG. 5 is a schematic view of the dust collector of the present invention;
FIG. 6 is a schematic structural diagram of a driving device according to the present invention.
In the figure: 1. a waterproof layer; 2. embossing layers; 3. a conductive layer; 4, a PET substrate layer; 5. an adhesive layer; 6. a release film layer; 11. a base; 12. a gantry; 13. a carriage; 14. a cleaning roller; 15. a cleaning block; 16. a film pressing roller; 17. a positioning device; 18. a dust collection device; 19. a drive device; 21. a first chute; 22. a slider; 23. a second chute; 24. a limiting rod; 25. a limiting hole; 26. a first spring; 27. a second spring; 31. a first housing; 32. a mounting cavity; 33. sealing the cavity; 34. a motor; 35. a rotating rod; 36. a sealing plate; 37. a ball bearing; 38. rotating the plate; 39. a partition plate; 310. a gas line; 311. a third chute; 312. a dust collection pipe; 313. a telescopic pipe; 41. a second housing; 42 a rotating shaft; 43. an elliptical turntable; 44. a friction wheel; 45. a first link; 46. a push rod; 47. a second link.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, the present embodiment provides an easy-to-peel PET protective film, including:
waterproof layer 1, line pressure layer 2, conducting layer 3, PET substrate layer 4, adhesive layer 5 and from type rete 6 that connect gradually from last to down, line pressure layer 2 adopts thermally induced expansion elastic material to make.
The working principle of the invention is as follows:
the invention provides an easily-stripped PET (polyethylene terephthalate) protective film, which is characterized in that a waterproof layer 1, a grain pressing layer 2, a conductive layer 3, a PET substrate layer 4, an adhesive layer 5 and a release film layer 6 are sequentially bonded, the waterproof layer 1 is arranged on the outermost layer and is used for preventing water and grease from remaining on the protective film and damaging the protective film, the grain pressing layer 2 expands under the action of high temperature so as to facilitate the stripping of the PET protective film, the conductive layer 3 is used for guiding out static electricity and heat in the production process of the protective film, the subsequent conductive heat dissipation working procedures are reduced, the PET protective film can be firmly bonded on the surface of a protected object through the adhesive layer 5, the stability of the protective film is improved, the release film layer 6 is arranged as a release paper layer and is bonded on the outer side of the adhesive layer 5 to protect the adhesive layer 5, and the release film layer 6 can be torn off when the protective film is used.
The invention has the beneficial effects that:
according to the easily-stripped PET protective film, the waterproof layer 1, the embossing layer 2, the conductive layer 3, the PET substrate layer 4, the adhesive layer 5 and the release film layer 6 are sequentially bonded, when the temperature of the PET protective film rises, materials on the embossing layer 2 expand, the outer side deformation of the embossing layer 2 is larger than the inner side deformation of the embossing layer 2 due to the fact that the outer side protrusion density is larger than the inner side protrusion density, the edge of the protective film is tilted, the protective film is conveniently stripped, and the use convenience is improved.
As shown in fig. 2, in one embodiment, the embossing layer 2 includes a plurality of circular protrusions concentrically arranged, and the distance between adjacent protrusions decreases from inside to outside.
The working principle and the beneficial effects of the technical scheme are as follows:
be provided with the circular arch of the concentric setting of a plurality of on line pressure layer 2, bellied density is sparse from inside to outside gradually, the heating temperature of the expanded material of line pressure layer 2 sets up to 90 ~ 180 ℃, protruding thickness sets up to 0.005 ~ 0.5mm, bellied shape is including circular, regular shape such as rectangle, still include irregular shape, when PET protection film temperature rose, the material on line pressure layer 2 takes place the inflation, because the protruding density in the outside is greater than inboard protruding density, the deflection that makes the line pressure layer 2 outside is greater than the deflection that line pressure layer 2 is inboard, with protection film border perk, be convenient for peel off the protection film.
In one embodiment, the proportion of the area of the protrusions is 30% to 70% of the total area.
The working principle and the beneficial effects of the technical scheme are as follows:
the ratio of the area of the bulges accounts for 30-70% of the total area, the bulges with enough area can be ensured to expand at high temperature, the generated deformation is convenient to strip, the deformation of the protective film is not obvious when the area of the bulges is small, and the stripping effect can be further improved by the sufficient area of the bulges.
In one embodiment, the waterproof layer 1 is coated with a polymer antistatic liquid on the surface.
The working principle and the beneficial effects of the technical scheme are as follows:
waterproof layer 1 sets up the outmost at the PET protection film, prevents that water and grease from remaining on the protection film, produces the damage to the protection film, and waterproof layer 1 sets up to the oleophobic hydrophobic coating of nanometer, and the oleophobic hydrophobic coating of nanometer can fill and level up the pot hole on protection film substrate surface, lets the substrate really become level and smooth, reduces the residue of water and grease. At PET rete surface coating polymer antistatic liquid, polymer antistatic liquid can lead away the protection film production in-process and accumulate the static in PET rete, reduces subsequent operation process, reduce cost.
In one embodiment, the waterproof layer 1, the embossing layer 2, the conductive layer 3 and the PET substrate layer 4 are bonded by pressure sensitive adhesive.
The working principle and the beneficial effects of the technical scheme are as follows:
waterproof layer 1, line pressure layer 2, conducting layer 3 and PET substrate layer bonding through the pressure-sensitive adhesive, after each layer is stacked, through applying pressure with adjacent layer bonding, prevent to separate between each layer, improve the intensity of protection film. The pressure-sensitive adhesive is made of acrylate materials, is colorless and transparent in appearance and has good weather resistance, can obtain good pressure-sensitive adhesive property without additives such as tackifying resin, softening agent, anti-aging agent and the like, has a simple formula, and can meet various different performance requirements.
In one embodiment, the preparation process of the easy-to-peel PET protective film comprises the following steps:
s1, winding the PET protective film base material on an unwinding roller, driving the unwinding roller to rotate, and unwinding the PET protective film base material;
s2, enabling the PET protective film base material to enter a cleaning device, and cleaning the PET protective film base material through the cleaning device;
s3, enabling the PET protective film base material to enter a coating machine, coating an adhesive layer 5 on one side of the PET protective film base material, and then compounding a release film layer 6 on the adhesive layer 5 to form a protective film semi-finished product;
s4, sequentially coating a pressure-sensitive adhesive, a composite conductive layer 3, a pressure-sensitive adhesive, a composite embossing layer 2, a pressure-sensitive adhesive and a composite waterproof layer 1 on the other side of the PET protective film substrate;
s5, feeding the PET protective film formed in the S4 into a dryer, and drying the PET protective film;
s6, enabling the PET protective film to enter a laminating mechanism, and laminating the PET protective film;
and S7, winding the prepared PET protective film on a winding roller.
The working principle and the beneficial effects of the technical scheme are as follows:
when the easy-to-peel PET protective film is prepared, firstly, a PET protective film base material is wound on an unwinding roller, the unwinding roller is driven to rotate, and the PET protective film base material is unwound; secondly, the PET protective film base material enters a cleaning device, and the cleaning device is used for cleaning the PET protective film base material; then, the PET protective film substrate enters a coating machine, an adhesive layer 5 is coated on one side of the PET protective film substrate, and then a release film layer 6 is compounded on the adhesive layer 5 to form a protective film semi-finished product; coating a pressure-sensitive adhesive, a composite conductive layer 3, a pressure-sensitive adhesive, a composite embossing layer 2, a pressure-sensitive adhesive and a composite waterproof layer 1 on the other side of the PET protective film substrate in sequence; then, the formed PET protective film enters a dryer to be dried; the PET protective film enters a pressing mechanism, and the PET protective film is pressed; and finally, winding the prepared PET protective film on a winding roller. Through cleaning PET protection film substrate, improve the cleanliness factor of PET protection film substrate, through coating PET protection film substrate both sides respectively to this forms from type rete 6, conducting layer 3, line pressure layer 2, coating pressure sensitive adhesive and waterproof layer 1, through the drying-machine, with firm bonding between each layer, through the pressfitting operation, presses the protection film to predetermineeing thickness, improves the connection steadiness of PET protection film upper strata and lower floor.
As shown in fig. 3-6, in one embodiment, the cleaning device comprises:
a base 11;
the door frame 12 is buckled above the base 11;
the sliding frame 13 is arranged in an N shape, and a vertical rod of the sliding frame 13 is connected to the top end of the gantry 12 in a sliding manner;
the two ends of the cleaning roller 12 are detachably connected between the vertical rods of the sliding frame 13;
a cleaning block 15, wherein the cleaning block 15 is connected to the bottom end of the cleaning roller 14;
the film pressing roller 16 is rotatably connected to a support at the top end of the base 11, and the cleaning roller 14 and the film pressing roller 16 are arranged in a matching manner;
the positioning devices 17 are connected to two side ends of the gantry 12, and the positioning devices 17 are connected with the bottom end of the carriage 13;
a dust suction device 18, wherein the dust suction device 18 is connected to the base 11, and the dust suction device 18 is arranged below the film pressing roller 16.
The working principle and the beneficial effects of the technical scheme are as follows:
when the cleaning device is used, the sliding frame 13 slides downwards, the cleaning roller 14 is fixed at a preset position through the positioning device 17, the PET protective film base material bypasses the film pressing roller 16, the other side of the PET protective film base material is in contact with the cleaning block 15, the PET protective film base material drives the film pressing roller 16 to rotate, meanwhile, the cleaning block 15 cleans dust on the surface of the PET protective film, the dust suction device 18 is started, the cleaned dust is adsorbed, and the dust is prevented from being attached to the PET protective film base material again to influence the cleaning quality. Through setting up cleaning device, before the operation of protective film coating, effectively realize the cleanness to PET protection film substrate, prevent that the dust from adhering to PET protection film substrate surface, influencing the quality of protection film, improving PET protection film substrate surface flatness and cleanliness factor.
As shown in fig. 3 and 4, in one embodiment, the positioning device 17 includes:
the first sliding groove 21 is vertically arranged on the inner side of the gantry 12;
one end of the sliding block 22 is slidably connected into the first sliding groove 21, and the other end of the sliding block 22 is connected with the bottom end of the sliding frame 13;
the second sliding chute 23 is formed in one end, close to the first sliding chute 21, of the sliding block 22;
the limiting rod 24 is connected in the second sliding groove 23 in a sliding manner;
the limiting hole 25 is formed in the outer side of the portal frame 12, the limiting hole 25 is communicated with the first sliding groove 21, and the limiting rod 24 is clamped in the limiting hole 25;
a first spring 26, wherein the first spring 26 is connected between the top end of the sliding block 22 and the top end of the first sliding chute 21;
and the second spring 27 is connected between the limiting rod 24 and the bottom end of the second sliding chute 23.
The working principle and the beneficial effects of the technical scheme are as follows:
when the positioning device 17 is used, in an initial position, the limiting rod 24 is separated from the limiting hole 25 in a clamping manner, a user pulls the carriage 13 downwards, the carriage 13 drives the sliding block 22 to slide downwards in the first sliding groove 21, when the sliding block 22 slides to the bottom end of the first sliding groove 22, the limiting rod 25 is opposite to the limiting hole 24, the limiting rod 25 slides outwards along the second sliding groove 23 under the action of the second spring 26 to be clamped with the limiting hole 24, so that the sliding block 22 is limited, and the carriage 13 and the cleaning block 15 are positioned at a preset position; when the cleaning roller 14 needs to be disassembled and maintained, the limiting rod 25 is pressed to be separated from the limiting hole 25 in a clamping mode, the sliding block 22 slides upwards under the action of the first spring 26 to drive the sliding frame 13 to slide upwards to reset, the cleaning block 15 is separated from the protective film, and the disassembling and the maintaining are carried out. Through the structural design, the cleaning roller 14 can be quickly positioned to the preset position, and when the cleaning roller is required to be detached and maintained, the cleaning block 15 and the protective film can be quickly separated, so that the structure is simple, the use is convenient, and the practicability of the device is improved.
As shown in fig. 5, in one embodiment, the dust suction device 18 includes:
the first shell 31 is fixedly connected to the bottom end of the base 11, and the first shell 31 comprises a sealing cavity 33 and a mounting cavity 32 which are arranged from top to bottom;
the motor 34, the motor 34 is installed at the bottom end of the installation cavity 32, and the motor 34 is electrically connected with the controller;
the bottom end of the rotating rod 35 is connected with the output end of the motor 34, and the top end of the rotating rod 35 extends into the sealed cavity 33;
sealing plates 36, two of which 37 are connected to the top and bottom ends of the sealing chamber 33;
a ball 37, wherein the ball 37 is rotatably connected between the two sealing plates 36, and the ball 37 is connected with the top end of the rotating rod 35;
the rotating plate 38 is fixedly connected to the side end of the ball 37, and the rotating plate 38 is slidably connected with the inner wall of the sealed cavity 33;
a partition plate 39, wherein the partition plate 39 is vertically connected to the center of the sealed cavity 33;
one end of each gas pipeline 310 is connected to the side end of the sealed cavity 33, the communication ports of the gas pipelines 310 and the sealed cavity 33 are arranged above the rotating plate 38, and the communication ports of the two gas pipelines 310 are symmetrically arranged relative to the vertical central line of the sealed cavity 33;
the third sliding chute 311 is arranged at the top end of the base 11;
the dust suction pipe 312 is slidably connected in the third chute 311, and the dust suction pipe 312 is connected with a dust suction pump;
one end of the telescopic pipe 313 is connected to the side end of the dust suction pipe 312, the other end of the telescopic pipe 313 is connected to the side wall of the third sliding chute 311, the two telescopic pipes 313 are symmetrically arranged, and the other end of the gas pipeline 310 penetrates through the base 11 and is communicated with the other end of the telescopic pipe 313.
The working principle and the beneficial effects of the technical scheme are as follows:
when the dust collector 18 is used, the controller starts the motor 34, the motor 34 drives the rotating rod 35 to rotate, the rotating rod 35 drives the balls 37 to rotate, the balls 37 rotate to drive the rotating plates 38 on the two sides to circularly and obliquely swing left and right, when the rotating plates 38 swing to be high on the left side and low on the right side, the rotating plates 38 compress air on the left side of the sealed cavity 33, the air enters the dust collection pipe 312 on the left side of the dust collection pipe 312 through the air pipeline 310 to push the dust collection pipe 312 to move right, along with the rotation of the rotating rod 35, when the rotating plates 38 swing to be high on the left side and low on the right side, the rotating plates 38 compress air on the right side of the sealed cavity 33, the air enters the dust collection pipe 312 on the right side of the dust collection pipe 312 through the air pipeline 310 to push the dust collection pipe 312 to move left, and the reciprocating and circulating movement of the dust collection pipe 312 is not realized, and simultaneously, the dust collection pump is started, and the dust collection pipe 312 adsorbs and collects the cleaned dust.
Through above-mentioned structural design, set up dust extraction 18 in film pressing roller 16 below, the device is simple, and the control of being convenient for makes dust absorption pipe 312 horizontal cycle move in third spout 311 through the drive of motor 34, adsorbs the collection to the dust under the clearance, prevents that the dust from cleaning the back and adhering to again on the protection film surface, has effectively enlarged and has inhaled the ash area, reduces and inhales the ash dead angle, has improved protection film dust clearance effect, further guarantees protection film finished product quality.
As shown in fig. 6, in one embodiment, a driving device 19 is connected to the outside of the gantry 12, and the driving device 19 includes:
a second housing 41, wherein the second housing 41 is fixedly connected to the outer side of the door clamp 12;
the rotating shaft 42 is rotatably connected to the inner wall of the second housing 41, and one end of the rotating shaft 42 penetrates through the second housing 41 and is connected with a handle;
the elliptic rotating disc 43, the elliptic rotating disc 43 is connected to the rotating shaft 42;
two friction wheels 44, wherein the two friction wheels 44 are rotatably connected to the inner wall of the second housing 41, and the friction wheels 44 are in contact with the long shaft end of the oval turntable 43;
the first connecting rod 45 is fixedly connected to the rotating shaft 42, and the first connecting rod 45 corresponds to the position of the short shaft of the elliptic rotary table 43;
the push rod 46 is connected to the side end of the second shell 41 in a sliding manner, and the push rod 46 is arranged corresponding to the limiting hole 25;
a second link 47, wherein the second link 47 is hinged between the first link 45 and the push rod 46.
The working principle and the beneficial effects of the technical scheme are as follows:
when the limiting rod 24 needs to be pressed, the handle on the outer side of the second shell 41 is rotated, the elliptical rotary disc 43 is driven to rotate through the rotating shaft 42, the elliptical rotary disc 43 drives the first connecting rod 45 and the second connecting rod 47 to push the push rod 46 to slide towards the limiting hole 25, the limiting rod 24 is pushed into the second sliding groove 23, and the rest limiting holes 25 of the limiting rod 24 are separated from clamping connection; when the clamping is needed again, the handle is rotated in the opposite direction, so that the long axis end of the oval turntable 43 is contacted and fixed with the friction wheel 44.
Through the structure design, the driving device 19 is arranged on the portal frame 12, the limiting rod 24 and the limiting hole 25 are connected and disconnected through the driving device 19 in a clamped mode, the pressing operation is converted into handle rotation, the transmission is flexible, the operation difficulty is reduced, meanwhile, when the operation is not needed, the handle is fixed through the friction wheel 44, accidents caused by mistaken collision are prevented, and the device is simple in structure and good in practicability.
In one embodiment, the vertical rod of the carriage 13 is connected with a spring clamping jaw, the two ends of the cleaning roller 12 are connected with the spring clamping jaw, the carriage 13 is provided with a safety indicating device, and the safety indicating device comprises:
the force sensor is connected to the spring clamping jaw and used for detecting the radial clamping force of the spring clamping jaw and transmitting data of the radial clamping force to the controller;
an alarm connected to the carriage 13 for indicating safety of connection of the cleaning roller 12;
the controller calculates the connection reliability of the cleaning roller 12 according to a preset algorithm, and controls an alarm, wherein the preset algorithm is as follows:
wherein eta is the calculated connection reliability of the cleaning roller 12, F (x) is a standard normal cumulative distribution function of the deformation of the spring clamping jaw, the connection reliability is obtained by finite element simulation calculation of the spring clamping jaw, F is the radial clamping force of the spring clamping jaw, L is the length of the spring clamping jaw, I is the section inertia moment of the spring clamping jaw, t is the diameter gap between the spring clamping jaw and the end part of the cleaning roller 12, E is the elastic modulus of the material of the spring clamping jaw, and sigma is the elastic modulus of the material of the spring clamping jaw1Is the standard deviation, σ, of the diametral clearance of the spring jaws from the end of the scrub roller 122Is the standard deviation of the modulus of elasticity of the spring jaw material;
the controller calculates the connection reliability eta of the cleaning roller 12 and a preset minimum connection reliability eta0Comparing until eta is larger than or equal to eta0When the cleaning roller 12 is connected with high reliability, the controller controls the alarm to be closed, and when eta is less than eta0When the cleaning roller 12 is poor in connection reliability and has a loosening risk, the controller controls the alarm to give an alarm and give an indication to workers.
The working principle and the beneficial effects of the technical scheme are as follows:
the scrub roller 12 is attached to the spring fingers to facilitate removal of the scrub roller 12 and after a period of use the scrub roller is ready for use12, the existing cleaning device does not consider the influence of the loosening of the cleaning roller 12 on the cleaning effect, therefore, the radial clamping force of the spring clamping jaw is monitored in real time, the connection reliability of the cleaning roller 12 is calculated by combining the finite element simulation calculation result of the spring clamping jaw, and the connection reliability eta of the cleaning roller 12 obtained by calculation and the preset lowest connection reliability eta are calculated0Carry out the contrast, judge cleaning roller 12 connection reliability to carry out the alarm indication when having not hard up risk, effectively improved the use reliability of device, in time overhaul cleaning roller 12 and clamping again, reduce cleaning roller 12 and become flexible the clear influence to the protection film, thereby guarantee clean effect.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An easy-to-peel PET protective film is characterized by comprising:
waterproof layer (1), line pressure layer (2), conducting layer (3), PET substrate layer (4), adhesive layer (5) and from type rete (6) that connect gradually from last to down, line pressure layer (2) adopt thermally induced expansion elastic material to make.
2. An easily peelable PET protective film according to claim 1, wherein the embossing layer (2) comprises a plurality of concentrically arranged circular protrusions, and the distance between adjacent protrusions decreases from inside to outside.
3. The easy-to-peel PET protective film according to claim 2, wherein the ratio of the raised area accounts for 30-70% of the total area.
4. The easy-to-peel PET protective film according to claim 1, wherein the surface of the waterproof layer (1) is coated with a polymer antistatic liquid.
5. The easy-to-peel PET protective film and the preparation process thereof according to claim 1, wherein the waterproof layer (1), the embossing layer (2), the conductive layer (3) and the PET substrate layer (4) are bonded by pressure-sensitive adhesive.
6. A preparation process of an easily-stripped PET protective film, which is used for the easily-stripped PET protective film as claimed in any one of claims 1-5, and is characterized by comprising the following steps:
s1, winding the PET protective film base material on an unwinding roller, driving the unwinding roller to rotate, and unwinding the PET protective film base material;
s2, enabling the PET protective film base material to enter a cleaning device, and cleaning the PET protective film base material through the cleaning device;
s3, enabling the PET protective film base material to enter a coating machine, coating an adhesive layer (5) on one side of the PET protective film base material, and then compounding a release film layer (6) on the adhesive layer (5) to form a protective film semi-finished product;
s4, sequentially coating a pressure-sensitive adhesive, a composite conductive layer (3), a pressure-sensitive adhesive, a composite embossing layer (2), a pressure-sensitive adhesive and a composite waterproof layer (1) on the other side of the PET protective film substrate;
s5, feeding the PET protective film formed in the S4 into a dryer, and drying the PET protective film;
s6, enabling the PET protective film to enter a laminating mechanism, and laminating the PET protective film;
and S7, winding the prepared PET protective film on a winding roller.
7. The process for preparing the easily stripped PET protective film according to claim 6, wherein the cleaning device comprises:
a base (11);
the door frame (12), the door frame (12) is buckled above the base (11);
the sliding frame (13), the sliding frame (13) is arranged in an N shape, and the vertical rod of the sliding frame (13) is connected to the top end of the gantry (12) in a sliding manner;
the two ends of the cleaning roller (12) are detachably connected between the vertical rods of the sliding frame (13);
a cleaning block (15), wherein the cleaning block (15) is connected to the bottom end of the cleaning roller (14);
the film pressing roller (16) is rotationally connected to a support at the top end of the base (11), and the cleaning roller (14) and the film pressing roller (16) are arranged in a matching manner;
the positioning devices (17), the positioning devices (17) are connected to two side ends of the gantry (12), and the positioning devices (17) are connected with the bottom end of the sliding frame (13);
a dust extraction device (18), the dust extraction device (18) being connected to the base (11), and the dust extraction device (18) being arranged below the lamination roller (16).
8. An easily peelable PET protective film and a process for manufacturing the same according to claim 7, wherein the positioning means (17) comprises:
the first sliding chute (21), the said first sliding chute (21) is opened in the said portal (12) inside vertically;
one end of the sliding block (22) is connected into the first sliding groove (21) in a sliding mode, and the other end of the sliding block (22) is connected with the bottom end of the sliding frame (13);
the second sliding chute (23) is formed in one end, close to the first sliding chute (21), of the sliding block (22);
the limiting rod (24), the limiting rod (24) is connected in the second sliding groove (23) in a sliding mode;
the limiting hole (25) is formed in the outer side of the door frame (12), the limiting hole (25) is communicated with the first sliding groove (21), and the limiting rod (24) is clamped in the limiting hole (25);
a first spring (26), wherein the first spring (26) is connected between the top end of the sliding block (22) and the top end of the first sliding chute (21);
and the second spring (27), and the second spring (27) is connected between the limiting rod (24) and the bottom end of the second sliding chute (23).
9. The easy-to-peel PET protective film and the preparation process thereof according to claim 7, wherein the dust suction device (18) comprises:
the first shell (31), the first shell (31) is fixedly connected to the bottom end of the base (11), and the first shell (31) comprises a sealing cavity (33) and a mounting cavity (32) which are arranged from top to bottom;
the motor (34), the motor (34) is installed at the bottom end of the installation cavity (32), and the motor (34) is electrically connected with the controller;
the bottom end of the rotating rod (35) is connected with the output end of the motor (34), and the top end of the rotating rod (35) extends into the sealed cavity (33);
the sealing plates (36) are connected to the top end and the bottom end of the sealing cavity (33) through two sealing plates (37);
the ball (37), the ball (37) is connected between the two sealing plates (36) in a rotating way, and the ball (37) is connected with the top end of the rotating rod (35);
the rotating plate (38), the rotating plate (38) is fixedly connected to the side end of the ball (37), and the rotating plate (38) is connected with the inner wall of the sealed cavity (33) in a sliding mode;
a partition plate (39), wherein the partition plate (39) is vertically connected to the center of the sealing cavity (33);
one end of each gas pipeline (310) is connected to the side end of the corresponding sealed cavity (33), communication ports of the gas pipelines (310) and the corresponding sealed cavities (33) are arranged above the rotating plate (38), and the communication ports of the two gas pipelines (310) are symmetrically arranged relative to the vertical central line of the corresponding sealed cavity (33);
the third sliding chute (311) is arranged at the top end of the base (11);
the dust collection pipe (312) is connected in the third sliding groove (311) in a sliding manner, and the dust collection pipe (312) is connected with a dust collection pump;
one end of each telescopic pipe (313) is connected to the side end of the corresponding dust suction pipe (312), the other end of each telescopic pipe (313) is connected with the side wall of the corresponding third sliding groove (311), the two telescopic pipes (313) are symmetrically arranged, and the other end of each gas pipeline (310) penetrates through the base (11) and is communicated with the other end of each telescopic pipe (313).
10. The easy-to-peel PET protective film and the preparation process thereof according to claim 8, wherein a driving device (19) is connected to the outer side of the door frame (12), and the driving device (19) comprises:
the second shell (41), the said second shell (41) is fixedly connected to the outside of the said door clamp (12);
the rotating shaft (42) is rotatably connected to the inner wall of the second shell (41), and one end of the rotating shaft (42) penetrates through the second shell (41) and is connected with a handle;
the elliptic rotating disc (43), the elliptic rotating disc (43) is connected to the rotating shaft (42);
the two friction wheels (44) are rotationally connected to the inner wall of the second shell (41), and the friction wheels (44) are in contact with the long shaft end of the elliptic rotating disc (43);
the first connecting rod (45) is fixedly connected to the rotating shaft (42), and the first connecting rod (45) corresponds to the position of the short shaft of the elliptic rotating disc (43);
the push rod (46), the push rod (46) is connected to the side end of the second shell (41) in a sliding mode, and the push rod (46) is arranged corresponding to the limiting hole (25);
a second link (47), the second link (47) being hinged between the first link (45) and a push rod (46).
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| CN202110886665.7A CN113635635B (en) | 2021-08-03 | 2021-08-03 | Easily-stripped PET (polyethylene terephthalate) protective film and preparation process thereof |
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| CN113635635B CN113635635B (en) | 2022-07-01 |
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| TWM603419U (en) * | 2019-12-17 | 2020-11-01 | 高冠企業股份有限公司 | Thermal expansion easy-peeling adhesive tape |
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| CN113635635B (en) | 2022-07-01 |
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