阅读说明：本技术 双向拉伸聚脂薄膜表面处理设备 (Biaxial stretching polyester film surface treatment equipment ) 是由 李绪猛 梁仙发 刘晓军 于 2020-06-17 设计创作，主要内容包括：本发明公开了双向拉伸聚脂薄膜表面处理设备,包括在线表面处理室,在线表面处理室内设有在线表面处理结构,在线表面处理结构包括第一在线表面处理结构和第二在线表面处理结构；第一在线表面处理结构和第二在线表面处理结构的结构相同。聚酯薄膜通过在在线表面处理设备对薄膜进行双面表面处理后,表面处理层所用的混合溶剂。一面增强了薄膜表面与镀铝层的附着力,同时提高了对空气和水蒸汽的阻隔性,确保了食品包装的安全性和保鲜性；另一面增强了薄膜表面与油墨的附着力,可用普通油墨代替专用油墨,同时降低了生产成本,本发明的增强印刷面还可用于表印,使印刷质量和印刷效果更好。(The invention discloses surface treatment equipment for a biaxially oriented polyester film, which comprises an online surface treatment chamber, wherein an online surface treatment structure is arranged in the online surface treatment chamber and comprises a first online surface treatment structure and a second online surface treatment structure; the first in-line surface treatment structure and the second in-line surface treatment structure have the same structure. The polyester film is subjected to double-sided surface treatment by an online surface treatment device, and then the surface treatment layer is treated by using a mixed solvent. The adhesive force between the surface of the film and the aluminized layer is enhanced, the barrier property to air and water vapor is improved, and the safety and the freshness of food packaging are ensured; the other surface enhances the adhesive force between the surface of the film and the printing ink, can replace the special printing ink with the common printing ink, and simultaneously reduces the production cost.)

1. Biaxial stretching polyester film surface treatment equipment, including online surface treatment room, its characterized in that: an online surface treatment structure is arranged in the online surface treatment chamber and comprises a first online surface treatment structure and a second online surface treatment structure, the first online surface treatment structure is positioned at the lower part of the online surface treatment chamber, and the second online surface treatment structure is positioned at the upper part of the online surface treatment chamber; the structure of the first online surface treatment structure is the same as that of the second online surface treatment structure, the first online surface treatment structure and the second online surface treatment structure respectively comprise a guide roller device, an arc roller device, a film lifting roller device, an edge lifting wheel device, a scraper device and a reticulate pattern roller device, the guide roller device is connected with the arc roller device through a polyester film, the arc roller device is connected with the film lifting roller device through a polyester film, the film lifting roller device is connected with the scraper device and the reticulate pattern roller device through a polyester film, and the scraper device and the reticulate pattern roller device are connected with the edge lifting wheel device through a polyester film.

2. The apparatus of claim 1, wherein: the lower part of the online surface treatment chamber is provided with an inlet, and the inlet is provided with an inlet guide roller device.

3. The apparatus of claim 1, wherein: the upper part of the online surface treatment chamber is provided with an outlet, and an outlet expansion wheel device is arranged on the outlet.

4. The apparatus of claim 1, wherein: and the inlet of the online surface treatment chamber is connected with a corona device.

5. The apparatus of claim 1, wherein: and the outlet of the online surface treatment chamber is connected with a transverse drawing machine.

6. The apparatus of claim 1, wherein: the film lifting roller device is connected with a lower edge pressing wheel device through a polyester film.

Technical Field

The invention relates to a surface treatment device for a biaxially oriented polyester film.

Background

The traditional film preparation process usually adopts the manufactured base film to be subjected to external coating treatment by warps according to the use characteristics to produce functional products such as adhesive tapes, solar films and the like, and the manufacturing cost is very high. The film surface (single side or double sides) is coated with a layer of ultrathin chemical liquid product with good uniformity, and the double-drawing stretching and baking oven equipment is utilized to achieve the required functions, which is an effect that the external surface treatment cannot achieve.

The film line outer surface treatment cases are more, the equipment investment, the manufacturing cost and the like are higher, some effects are difficult to meet the requirements of some special products, and the double-pull on-line treatment is another direction in the current development stage. In addition, the existing scheme has the following disadvantages: too many mechanisms moving along with the groove anilox roller are too heavy, the wire feeding amount is not well controlled, the stability is also unreliable, and the requirement of stable and accurate 5 +/-0.5 wrap angle is very difficult to achieve.

Disclosure of Invention

The invention aims to provide a device for processing the surface of biaxially oriented polyester film, aiming at the defects of the prior art.

In order to solve the technical problems, the following technical scheme is adopted:

biaxial stretching polyester film surface treatment equipment, including online surface treatment room, its characterized in that: an online surface treatment structure is arranged in the online surface treatment chamber and comprises a first online surface treatment structure and a second online surface treatment structure, the first online surface treatment structure is positioned at the lower part of the online surface treatment chamber, and the second online surface treatment structure is positioned at the upper part of the online surface treatment chamber; the structure of the first online surface treatment structure is the same as that of the second online surface treatment structure, the first online surface treatment structure and the second online surface treatment structure respectively comprise a guide roller device, an arc roller device, a film lifting roller device, an edge lifting wheel device, a scraper device and a reticulate pattern roller device, the guide roller device is connected with the arc roller device through a polyester film, the arc roller device is connected with the film lifting roller device through a polyester film, the film lifting roller device is connected with the scraper device and the reticulate pattern roller device through a polyester film, and the scraper device and the reticulate pattern roller device are connected with the edge lifting wheel device through a polyester film.

Further, an inlet is arranged at the lower part of the online surface treatment chamber, and an inlet guide roller device is arranged on the inlet.

Further, an outlet is arranged at the upper part of the online surface treatment chamber, and an outlet expansion wheel device is arranged on the outlet.

Further, a corona device is connected to the inlet of the online surface treatment chamber.

Further, an outlet of the online surface treatment chamber is connected with a transverse drawing machine.

Further, the film lifting roller device is connected with a lower edge pressing wheel device through a polyester film.

Due to the adoption of the technical scheme, the method has the following beneficial effects:

the invention relates to a surface treatment device for a biaxially oriented polyester film, wherein after the surface treatment of the two sides of the film is carried out by an online surface treatment device, the surface of the polyester film for aluminizing is prepared from a mixed solvent used in a surface treatment layer, a waterborne acrylic resin, a catalyst, a curing agent and a functional additive, and the surface for printing is prepared from the waterborne acrylic resin, the functional additive and pure water. The adhesive force between the surface of the film and the aluminized layer is enhanced, the barrier property to air and water vapor is improved, and the safety and the freshness of food packaging are ensured; the other surface enhances the adhesive force between the surface of the film and the printing ink, can replace the special printing ink with the common printing ink, and simultaneously reduces the production cost.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of the surface treatment apparatus for biaxially oriented polyester film according to the present invention.

In the figure: 1. longitudinally drawing an outlet guide roller; 2. a first corona treatment device; 3. a second corona treatment device; 4. an inlet guide roller device; 5. a lower guide roller device; 6. a lower curved roll device; 7. a lower film-lifting roller device; 8. a lower edge roller device; 9. a lower surface treatment scraper device; 10. the lower surface is processed with a groove anilox roller device; 11. a lower edge lifting wheel device; 12. an upper guide roller device; 13. an upper curved roll device; 14. an upper film lifting roller device; 15. an upper surface treatment scraper device; 16. the upper surface is processed with a groove anilox roller device; 17. an upper edge lifting wheel device; 18. an outlet expander wheel assembly; 19. a transverse drawing machine.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, the biaxially oriented polyester film surface treatment equipment comprises an online surface treatment chamber, wherein an online surface treatment structure is arranged in the online surface treatment chamber, and comprises a first online surface treatment structure and a second online surface treatment structure, the first online surface treatment structure is positioned at the lower part of the online surface treatment chamber, and the second online surface treatment structure is positioned at the upper part of the online surface treatment chamber; the structure of the first online surface treatment structure is the same as that of the second online surface treatment structure, the first online surface treatment structure and the second online surface treatment structure respectively comprise a guide roller device, an arc roller device, a film lifting roller device, an edge lifting wheel device, a scraper device and a reticulate pattern roller device, the guide roller device is connected with the arc roller device through a polyester film, the arc roller device is connected with the film lifting roller device through a polyester film, the film lifting roller device is connected with the scraper device and the reticulate pattern roller device through a polyester film, and the scraper device and the reticulate pattern roller device are connected with the edge lifting wheel device through a polyester film.

Specifically, the first online surface treatment structure comprises a lower guide roller device 5, a lower arc roller device 6, a lower film lifting roller device 7, a lower edge lifting wheel device 8, a lower surface treatment scraper device 9 and a lower surface treatment groove anilox roller device 10, wherein the lower guide roller device 5 is connected with the lower arc roller device 6 through a mylar, the lower arc roller device 6 is connected with the lower film lifting roller device 7 through a mylar, the lower film lifting roller device 7 is connected with the lower surface treatment scraper device 9 and the lower arc roller device 6 through a mylar, and the lower surface treatment scraper device 9 and the lower arc roller device 6 are connected with the lower edge lifting wheel device 8 through a mylar.

Specifically, the second online surface treatment structure comprises an upper guide roller device 12, an upper arc roller device 13, an upper film lifting roller device 14, an upper edge lifting wheel device 15, an upper surface treatment scraper device 16 and an upper surface treatment groove anilox roller device 17, wherein the upper guide roller device 12 is connected with the upper arc roller device 13 through a polyester film, the upper arc roller device 13 is connected with the upper film lifting roller device 14 through a polyester film, the upper film lifting roller device 14 is connected with the upper surface treatment scraper device 16 and the upper arc roller device 13 through a polyester film, and the upper surface treatment scraper device 16 and the upper arc roller device 13 are connected with the upper edge lifting wheel device 15 through a polyester film.

One of the guide rollers of the upper surface treatment groove anilox roller device 17 and the lower surface treatment groove anilox roller device 10 is changed to realize a wire feeding function. Because the guide roller is the driven roller, does not have associated mechanism, to realize that this guide roller is stable accurate to move into silk degree of difficulty than the former is much easier, and the structure is also simple relatively reliable, advances the silk volume and can accomplish that the adjustment handle rotates a week and advances the silk volume and be 0.2mm, and the handle advances the silk volume and be 0.2/360 for every 1 angle of rotation 0.00056mm promptly.

The edge lifting wheel device can also prevent the edge film which cannot be used as a product from being treated, so that the recycling, granulation and reuse are not a problem; meanwhile, the rim charge does not stick chemical liquid, and the transverse pulling and edge clamping of the next procedure cannot be influenced.

The equipment also uses a cambered roller and an outlet expanding wheel device, so that the whole film surface is smooth, and the possibility of treatment leakage is greatly reduced.

Further, the lower part of the online surface treatment chamber is provided with an inlet, and the inlet is provided with an inlet guide roller device 4.

Further, an outlet is arranged at the upper part of the online surface treatment chamber, and an outlet expansion wheel device 18 is arranged on the outlet.

Further, a corona device is connected to the inlet of the online surface treatment chamber. The corona device is provided with 2 pairs or more than 2 pairs. In the present embodiment, the corona device includes an upper first corona treatment device 2 and a lower second corona treatment device 3, and the first corona treatment device 2 and the second corona treatment device 3 are identical in structure. The second corona treatment device 3 is connected with a longitudinal drawing outlet guide roller 1 through a polyester film.

Further, a cross-draw machine 19 is connected to the outlet of the on-line surface treatment chamber. The transverse drawing machine 19 is used for transversely drawing the PET film subjected to the online double-sided surface treatment, and a uniform surface treatment layer is formed on the surface of the film after the water-based mixed solvent for aluminum plating and the water-based mixed solvent for printing are dried and volatilized in the transverse drawing process.

Further, the film lifting roller device is connected with a lower edge pressing wheel device through a polyester film.

The working principle of the invention is as follows: firstly, carrying out corona treatment on two surfaces of the polyester film after longitudinal stretching, and then uniformly coating an aluminizing aqueous mixed solvent and a printing aqueous mixed solvent on the two surfaces in sequence by an online double-surface treatment device.

Specifically, the PET film is firstly pulled by a lower guide roller device 5, so that the original upward state of the polyester film on a cold drum is changed into a downward state, then the PET film is flattened by a lower arc-shaped roller device 6 and passes through a lower film lifting roller device 7, so that the film surface of the polyester film enters the same height as that of a lower surface treatment groove anilox roller device 10, and the lower surface treatment is carried out by a lower surface treatment scraper device 9;

the film surface of the mylar subjected to the lower surface treatment is firstly pulled by an upper guide roller device 12, flattened by an upper arc roller device 13, passed through an upper film lifting roller device 14, brought to the same height as that of an upper surface treatment groove anilox roller device 17, and subjected to the upper surface treatment by an upper surface treatment scraper device 16.

And a set of expanding wheel device is arranged at the outlet to enable the film surface to be more flat and enter the transverse stretching. The transverse drawing machine 19 is used for transversely drawing the PET film subjected to the online double-sided surface treatment, and a uniform surface treatment layer is formed on the surface of the film after the water-based mixed solvent for aluminum plating and the water-based mixed solvent for printing are dried and volatilized in the transverse drawing process.

In addition, the film surface of the treated PET film is wet, and the film is introduced into a transverse stretcher, wherein the temperature of a preheating zone is 110 +/-5 ℃, and the length is 8m +/-2; the temperature of a stretching area is 130 ℃ plus or minus 5, the length is 8m plus or minus 2, and the using stretching ratio is 3.2 plus or minus 0.4; a drying and heat setting area with the temperature of 230 ℃ plus or minus 10 and the length of 24m plus or minus 6; the cooling zone allowed the film to cool to ambient temperature, 6m 2 in length. And 3m +/-1 buffer areas are arranged between every two areas, so that the temperature controllability of each area of the oven is improved.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.