CN219381704U - TPU film attaching backing device - Google Patents

Abstract

The utility model discloses a TPU film attaching backing device which comprises a film extrusion assembly, a first corona polarization component, a second corona polarization component, an infrared heating component, a front roller, a middle roller and a backing winding component, wherein the front roller and the middle roller are both positioned right below the film extrusion assembly, a slit is formed between the front roller and the middle roller, the first corona polarization component is positioned between the film extrusion assembly and the slit, the second corona polarization component and the infrared heating component are both positioned between the backing winding component and the slit, and the backing winding component is used for pulling out a backing to the slit so as to enable the backing and the TPU film to be attached on line. The operation is safe and convenient, and the adhesion fastness of the TPU film and the bottom lining is greatly improved by matching with a proper process, the adhesion appearance reject ratio is reduced, and the product quality qualification rate is improved. Meanwhile, the time and the resources are saved, the solvent is not used, the harm to the human body is avoided, the harm to the environment is reduced, and the cost is effectively reduced.

Description

TPU film attaching backing device

Technical Field

The utility model relates to a TPU film attaching backing device.

Background

In the production of TPU cast films on-line attached liners, after the thickness of the films is adjusted after the films are extruded from a die head, the liners are then lined on-line attached, in the traditional process, the film surface of the cast films from the die is hot, the TPU film surface is also strong in polarity, but the liners are cold and generally have no active polarity in an excited state, the surfaces of the liners are consistent with room temperature, the liners are not subjected to heating and polarization treatment, the water content of some liners is higher, so that the on-line attachment fastness of the cold liners and the TPU films is not high, bubbles, looseness, layering, indentation and the like are easy to generate, the surfaces sometimes look to be attached, and the films and the liners are torn off with a little force by two hands. For some use scenes with larger requirements on fitting fastness, the use scenes are not suitable. If a layer of glue is added between the film and the backing, although the glue can be firmly adhered, the cost is increased, the stability of the gluing process is controlled, and some glue is harmful to human bodies. Meanwhile, the existing combination of the film and the bottom lining mainly comprises solvent combination, the production period can be greatly prolonged, technicians are required to prepare glue by the solvent combination, the solvent can volatilize to cause certain air pollution, the solvent has slight toxicity to cause certain harm to human bodies, the solvent is inflammable and explosive, and the risk is great if measures are not taken in place in the production process.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a TPU film attaching backing device.

The utility model is realized by the following technical scheme:

the utility model provides an attached substrate device of TPU film, its includes film extrusion subassembly, first corona polarization part, second corona polarization part, infrared heating part, front roller, well roller, and substrate coiling part, film extrusion subassembly is used for extruding the TPU film, front roller with well roller all is located under the film extrusion subassembly, just front roller with be formed with the slit between the well roller, first corona polarization part is located between the film extrusion subassembly with the slit, just first corona polarization part is used for carrying out corona polarization to the TPU film, second corona polarization part with infrared heating part all is located between the substrate coiling part with the slit, just second corona polarization part is used for carrying out corona polarization to the substrate, infrared heating part is used for carrying out infrared heating to the substrate, substrate coiling part is used for drawing out the substrate to slit department, so that substrate and TPU film carry out online attachment.

Further, the film extrusion assembly comprises a single screw extruder, a screen changing area and a die head, wherein two ends of the screen changing area are respectively connected with the single screw extruder and the die head, and the die head is positioned right above the first corona polarization component and the slit.

Further, the infrared heating component is an infrared heating pipe.

Further, the TPU film attaching backing device further comprises a rear roller and a trimming device, wherein the rear roller is located between the trimming device and the middle roller, a gap is reserved between the rear roller and the middle roller, and the attached backing and TPU film sequentially pass through the rear roller and the trimming device.

Further, the TPU film attaching backing device further comprises a combined cooling roller and a traction roller, and the combined cooling roller is positioned between the traction roller and the edge cutting device.

Further, the TPU film attaching backing device further comprises a winding device, wherein the winding device is positioned at the rear end of the traction roller and used for winding the attached backing and the TPU film.

The utility model has the beneficial effects that:

the TPU film attaching backing device is safe and convenient to operate, and has wide application value and prospect for TPU composite cloth and TPU composite leather, and the attaching fastness of the TPU film and the backing is greatly improved by matching with a proper process, the attaching appearance reject ratio is reduced, and the product quality qualification rate is improved. Meanwhile, the time and the resources are saved, the solvent is not used, the harm to human bodies is avoided, the harm to the environment is reduced, the on-line adhesion of the TPU film to the heat lining completely meets the requirements of green energy conservation, and the cost can be effectively reduced.

Drawings

Fig. 1 is a schematic structural view of a TPU film attaching backing device according to an embodiment of the present utility model.

Reference numerals illustrate:

first corona polarizing component 1

Film extrusion assembly 2

Single screw extruder 21

Screen change area 22

Die head 23

Die slot screw 231

Infrared heating part 3

Second corona polarizing component 4

Substrate winding part 5

Front roller 6

Middle roller 7

Rear roller 8

Trimming device 9

Combined cooling roll 10

Traction roller 11

Winding device 12

TPU film 100

Substrate 200

Detailed Description

The following description of embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the utility model may be practiced.

As shown in fig. 1, the present embodiment discloses a TPU film attaching backing device including a first corona polarizing member 1, a film extrusion assembly 2, a second corona polarizing member 4, an infrared heating member 3, a front roller 6, a middle roller 7, and a backing winding member 5, the film extrusion assembly 2 being for extruding a TPU film 100, the front roller 6 and the middle roller 7 being located directly below the film extrusion assembly 2 with a slit formed between the front roller 6 and the middle roller 7, the first corona polarizing member 1 being located between the film extrusion assembly 2 and the slit with the first corona polarizing member 1 being for corona polarizing the TPU film 100, the second corona polarizing member 4 and the infrared heating member 3 being located between the backing winding member 5 and the slit with the second corona polarizing member 4 being for corona polarizing the backing 200, the infrared heating member 3 being for infrared heating the backing 200, the backing winding member 5 being for drawing the backing 200 to the slit to attach the backing 200 and the TPU film 100 on line.

According to the TPU raw material particles, a proper processing technology is selected, the particles are extruded into a TPU film 100 after passing through the film extrusion assembly 2, the TPU film 100 extruded by the film extrusion assembly 2 passes through a first corona polarization component 1 below, and the TPU film 100 cast out is subjected to online corona through the first corona polarization component 1, so that the surface of the TPU film 100 is more polarized and has more electrification. The backing winding part 5 is used for pulling the backing 200 out to a slit, and sequentially passes through the second corona polarization part 4 and the infrared heating part 3 in the pulling process, so that the backing 200 is subjected to corona polarization and infrared heating in the previous conveying process, the corona can generate a slight electric corrosion effect on the surface of the backing 200, the surface energy of the backing 200 is very high due to heating, surface molecules of the backing 200, which are in contact with the TPU film 100, are very active, the TPU film 100 just cast is polarized, the surface temperature of the TPU film 100 is high, the molecules are very active and jump, the surface molecular chains of the TPU film 100 and the surface molecular chains of the backing 200 can be entangled with each other at the interface contact point, are similar and mutually attracted, are relatively easy to be composited together through extrusion at the slit of the front roller 6 and the middle roller 7, and the lamination fastness is relatively high after lamination cooling.

The TPU film attaching backing device is safe and convenient to operate, and has wide application value and prospect for TPU composite cloth and TPU composite leather, and the attaching fastness of the TPU film 100 and the backing 200 is greatly improved by matching with a proper process, the defective rate of attaching appearance is reduced, and the quality qualification rate of products is improved. Meanwhile, the time and the resources are saved, the solvent is not used, the harm to human bodies is avoided, the harm to the environment is reduced, the on-line adhesion of the TPU film 100 to the thermal liner 200 completely meets the requirements of green energy conservation, and the cost can be effectively reduced.

The substrate 200 includes, but is not limited to, polyester cloth, nylon cloth, bei Sibu, microfiber cloth, glassine paper, PET substrate, and the like. In order to save energy and reduce the harm to the environment, the TPU film 100 is attached on-line to the thermal liner 200, which completely meets the requirements of green energy conservation, and can reduce the cost more effectively. The infrared heating part 3 is an infrared heating pipe.

The film extrusion assembly 2 comprises a single screw extruder 21, a screen changing area 22 and a die head 23, wherein two ends of the screen changing area 22 are respectively connected with the single screw extruder 21 and the die head 23, and the die head 23 is positioned right above the first corona polarization component 1 and the slit. According to the selection of proper processing technology of TPU raw material particles, the particles are extruded and plasticized by a single screw extruder 21, pass through a screen changing area 22 and are formed into a film at a die head 23, namely a TPU film 100, and a first corona polarization component 1 is arranged below the die head 23 at a proper distance.

The TPU film attaching backing device further comprises a back roller 8 and a trimming device 9, wherein the back roller 8 is positioned between the trimming device 9 and the middle roller 7, a gap is reserved between the back roller 8 and the middle roller 7, and the attached backing 200 and the TPU film 100 sequentially pass through the back roller 8 and the trimming device 9. The bottom lining 200 and the TPU film 100 are compositely attached together after passing through the slit between the front roller 6 and the middle roller 7, the attached bottom lining 200 and TPU film 100 sequentially pass through the gap between the rear roller 8 and the middle roller 7, the composited attaching effect of the bottom lining 200 and the TPU film 100 is further enhanced, the attaching fastness is further improved, the realization that the TPU film 100 and the bottom lining 200 are composited firmly, and the surface is compact. And then subjected to trimming treatment by the trimming device 9.

The TPU film attaching backing device further comprises a combined cooling roll 10 and a pull roll 11, wherein the combined cooling roll 10 is positioned between the pull roll 11 and the edge cutting device 9. The pulling roll 11 will be used to pull the attached backing 200 and TPU film 100 such that the attached backing 200 and TPU film 100 will be subjected to a cooling process by the combination cooling roll 10.

The TPU film attaching backing device further comprises a winding device 12, wherein the winding device 12 is positioned at the rear end of the traction roller 11 and is used for winding the attached backing 200 and the TPU film 100. The attached base liner 200 and TPU film 100 are rolled by the rolling device 12, and finally packaged and put in storage. In the present embodiment, the die 23 has a die slot screw 231 thereon. Firstly, through comprehensive adjustment of extrusion speed, adjustment of die head slit screws 231, traction speed, speed regulation of three rollers (namely a front roller 6, a middle roller 7 and a rear roller 8) and the like, the thickness of the TPU film 100 is adjusted to be within a tolerance range, the thickness of the whole width of the TPU film 100 can reach a qualified zone (such as 0.2mm plus or minus 0.015 mm), after the thickness of the TPU film 100 is stable and qualified, the substrate 200 (such as polyester cloth) is pulled out from a rear substrate winding part 5, and the substrate 200 sequentially passes through a second corona polarization part 4 and an infrared heating part 3, and is subjected to polarization and heating treatment to reach the slit positions of the front roller 6 and the middle roller 7, and then is subjected to online attachment with the polarized TPU film 100 just cast.

The TPU film attaching backing means further comprises a controller electrically connected to the first corona polarizing component 1, the infrared heating component 3 and/or the second corona polarizing component 4. The controller is used for controlling the power of the first corona polarization component 1, the infrared heating component 3 and/or the second corona polarization component 4 respectively. The tension controller may be provided on the backing winding member 5.

The TPU film backing attachment apparatus of this example 1 was compared with comparative example 1 as follows:

when the TPU film attaching backing device of this example 1 is used, a common TPU raw material particle of polyester 85A is selected, a proper processing temperature is selected, the TPU raw material particle is plasticized by a single screw extruder 21, formed into a film at a die head 23, corona polarized by a first corona polarizing component 1, passed through slits of a front roller 6 and a middle roller 7, drawn into a winding position, comprehensively adjusted by extrusion speed, die head slit screw 231, drawing speed, three-roller speed regulation and the like, the thickness of the TPU film 100 is adjusted to be within a tolerance range, the thickness of the whole width can reach a qualified section (such as 0.2mm plus or minus 0.015 mm), after the thickness of the TPU film 100 is qualified, the backing 200 (such as polyester cloth) is drawn out from a rear backing winding component 5, sequentially passed through a second corona polarizing component 4 and a red heating component 3, polarized and heat treated by the backing 200, and then passed through slits of the front roller 6 and the middle roller 7, and attached to the TPU film 100 after online casting.

In comparative example 1, a conventional TPU feed stock pellet of polyester 85A was selected, the appropriate processing temperature was selected, plasticized by a single screw extruder 21, formed into a film at die 23 (feed stock, process were identical to those described in example 1 above), but the auxiliary equipment corona and infrared heating were turned off, both off, but the corona polarization, corona equipment turned off, TPU film 100 passed through the slits of front roll 6 and middle roll 7, drawn to the take-up,

the thickness of the TPU film 100 is adjusted within the tolerance range by the comprehensive adjustment of extrusion speed, die slot screw 231, traction speed, three-roller speed regulation and the like, the thickness of the whole width of the TPU film 100 can reach a qualified interval (such as 0.2mm plus or minus 0.015 mm), after the thickness of the TPU film 100 is qualified, the bottom liner 200 (consistent with the bottom liner 200 in the embodiment 1) is pulled out from the back bottom liner winding part 5, but no corona and no infrared heating are carried out, and both devices are turned off to the slots of the front roller 6 and the middle roller 7 and are attached on line with the TPU film 100 (the TPU film 100 which is just cast is not corona).

The data relating to the TPU film attachment backing device of this example 1 and comparative example 1 are referenced below:

the foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (6)

1. The TPU film attaching backing device is characterized by comprising a film extrusion assembly, a first corona polarization component, a second corona polarization component, an infrared heating component, a front roller, a middle roller and a backing winding component, wherein the film extrusion assembly is used for extruding TPU films, the front roller and the middle roller are both positioned right below the film extrusion assembly, a slit is formed between the front roller and the middle roller, the first corona polarization component is positioned between the film extrusion assembly and the slit, the first corona polarization component is used for carrying out corona polarization on the TPU films, the second corona polarization component and the infrared heating component are both positioned between the backing winding component and the slit, the second corona polarization component is used for carrying out corona polarization on the backing, the infrared heating component is used for carrying out infrared heating on the backing, and the backing winding component is used for drawing out linear adhesion on the TPU films.

2. The TPU film attachment backing device of claim 1, wherein said film extrusion assembly comprises a single screw extruder, a screen change area, and a die, wherein two ends of said screen change area are connected to said single screw extruder and said die, respectively, said die being located directly above said first corona polarizing component and said slit.

3. The TPU film attachment backing device of claim 1 wherein said infrared heating means is an infrared heating tube.

4. The TPU film attaching backing device of claim 1, further comprising a back roll and a trimming device, said back roll being positioned between said trimming device and said middle roll with a gap therebetween, said backing and said TPU film after attachment passing in sequence through said back roll and said trimming device.

5. The TPU film attachment backing device of claim 4 further comprising a combination chill roll and a pull roll, said combination chill roll being located between said pull roll and said trim apparatus.

6. The TPU film attaching backing device of claim 5, further comprising a take-up device at a rear end of said pull roll for taking up said attached backing and said TPU film.