High-barrier film cooling device
By using an insulation cover and an extension cover to cover the lower half of the roller in the high-barrier film cooling device, the problem of the cooling roller being easily affected by the ambient temperature is solved, and the stability of the cooling effect and the improvement of production efficiency are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CHANGHAI PACKAGE GRP
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-01
AI Technical Summary
The cooling rollers of existing high-barrier film cooling devices are directly exposed to the environment, making the cooling effect susceptible to the influence of ambient temperature, which affects the barrier performance of the film and production efficiency.
A high-barrier film cooling device including an insulation cover and an extension cover was designed. By covering the lower half of the roller, the influence of ambient temperature on the cooling effect is reduced, and the coverage area of the insulation cover can be adjusted according to the film path.
It effectively reduces the impact of ambient temperature on cooling performance, improves the cooling uniformity and production efficiency of the film, and reduces energy consumption and defect rate.
Smart Images
Figure CN224183513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-barrier membrane production technology, and in particular to a high-barrier membrane cooling device. Background Technology
[0002] High-barrier films are widely used in food packaging, pharmaceutical encapsulation, and electronic device protection due to their excellent oxygen and moisture barrier properties. During film production, the molten high-barrier film needs to be rapidly shaped by cooling rollers to form a dense structure; the uniformity of cooling directly determines the film's barrier properties and mechanical strength.
[0003] Currently, existing technologies generally use cooling rollers as the core cooling device, typically employing an internal circulating cooling medium (such as water or ethylene glycol solution) for heat exchange. However, their structures are mostly open designs, such as... Figure 1 As shown, it includes a cooling roller 01 and a roller shaft 02. The roller body is directly exposed to the air, and fluctuations in ambient temperature will significantly interfere with the stability of the cooling process of the high-barrier film.
[0004] When the ambient temperature is high (such as in summer or in workshops with poor temperature control), the heat exchange efficiency between the air and the roller surface decreases, causing the actual roller surface temperature to deviate from the set value. The film cooling rate decreases, and the barrier layer (such as EVOH, PA) forms a coarse spherulite structure due to the delayed crystallization process. The molecular arrangement is loose, and the oxygen permeability (OTR) and water vapor permeability (WVTR) increase accordingly, resulting in deterioration of barrier performance. At the same time, the high temperature environment intensifies the convective heat dissipation between the non-working area of the roller and the air, forcing the cooling medium system to frequently lower the water temperature or increase the flow rate to maintain the roller temperature. This significantly increases energy consumption and makes it difficult to guarantee temperature control accuracy.
[0005] In low-temperature environments (such as winter or areas with strong ventilation), rapid heat dissipation from the roller surface can cause sudden cooling of the film. The difference in thermal shrinkage rates between the barrier layer and the substrate (such as PE or CPP) generates internal stress, which can lead to film warping or, in severe cases, delamination of the metallized aluminum plating layer from the substrate interface, resulting in microcracks or delamination defects. Furthermore, localized airflow within the workshop (such as turbulence caused by equipment heat dissipation or personnel movement) can lead to uneven transverse temperature distribution on the roller surface, deteriorating the crystallinity and thickness consistency of different areas of the film, manifesting as fluctuations in barrier performance (e.g., transverse OTR difference exceeding ±0.3 cm). 3 / m 2 •Day) or surface defects such as orange peel texture and fish eyes. These problems are particularly prominent during high-speed continuous production. Because environmental interference is difficult to compensate for in real time, it is often necessary to reduce the speed of operation or stop the machine multiple times for debugging, which seriously restricts the production efficiency and yield of high-barrier films.
[0006] Therefore, this application provides a high-barrier film cooling device to solve the above-mentioned technical problems. Utility Model Content
[0007] The technical problem to be solved by this invention is to provide a high-barrier film cooling device to solve the problem that in the prior art, ordinary cooling rollers are directly and completely exposed to the environment, which makes them susceptible to the influence of ambient temperature and affects the cooling effect on the high-barrier film.
[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0009] A high-barrier film cooling device includes a fixed base, with fixed ears symmetrically fixed at both ends of the fixed base, a rotatable roller disposed between the two fixed ears, and a support base parallel to the roller also fixed between the two fixed ears. A heat insulation cover for covering the lower half of the roller is fixed to the upper end face of the support base, and an extension cover is movably disposed on the inner side of the heat insulation cover.
[0010] The present invention is further configured such that grooves are symmetrically provided on both sides of the fixed base, and the grooves are parallel to the roller.
[0011] The present invention is further configured such that roller shafts are fixed at both ends of the roller and pass through through holes corresponding to the middle of the fixing ears, and support ears are symmetrically fixed at both ends of the support base, and an opening is provided in the middle of the support ear, and a bearing for the roller shaft to pass through is fixed therethrough.
[0012] The present invention is further configured such that at least two bolts are provided on the support ear and are threadedly inserted and fixed to the fixing ear.
[0013] The present invention is further configured such that sliding grooves are provided on both sides of the heat insulation cover along the circumferential direction of the arc surface, and two extension covers are provided, which are respectively located on the inner walls of both sides of the heat insulation cover. A stud is fixed at the bottom end of the extension cover, and the stud is slidably placed in the corresponding sliding groove.
[0014] The present invention is further configured such that a fastening cap is threadedly fitted to one end of the stud extending out of the slide groove, and the fastening cap abuts against the outer surface of the heat insulation cover to form a limiting and fixing position.
[0015] The present invention is further configured such that the inside of the roller and the roller shaft is hollow and a channel for coolant is provided, and several partitions are alternately arranged on both sides of the inner wall of the channel to form a bent channel.
[0016] Compared with the prior art, this utility model has at least the following beneficial effects:
[0017] In the above solution, thanks to the cooperation between the support base and the heat insulation cover, the heat insulation cover can be used to cover the lower half of the roller to wrap the non-working area of the roller (without affecting the film path), thereby reducing the impact of the environment on the cooling effect of the roller.
[0018] In the above scheme, thanks to the cooperation between the heat insulation cover and the extension cover, it is convenient to slide the extension cover inside the heat insulation cover. The heat insulation cover and the extension cover together wrap the non-working area of the roller, which is conducive to adjusting the wrapping area of the roller according to the film path, making it flexible in use.
[0019] In summary, this device not only wraps the non-working area of the roller, reducing the impact of ambient temperature on the cooling effect of the high-barrier film, but also offers flexibility in use, allowing adjustment of the thermal insulation protection area of the roller according to the actual film path, resulting in excellent overall performance. Attached Figure Description
[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.
[0021] Figure 1 This is a schematic diagram of the existing technology;
[0022] Figure 2 This is a schematic diagram of the structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the support base of this utility model;
[0024] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A;
[0025] Figure 5 This is a schematic diagram of the internal structure of the roller of this utility model.
[0026] [Figure Labels]
[0027] 01. Cooling roller; 02. Roller shaft; 1. Fixing seat; 101. Fixing ear; 102. Groove; 2. Roller; 201. Roller shaft; 202. Partition; 3. Support seat; 301. Support ear; 302. Bearing; 303. Bolt; 4. Insulation cover; 401. Slide groove; 5. Extension cover; 501. Stud; 502. Fastening cap.
[0028] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation
[0029] The high-barrier film cooling device provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.
[0030] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.
[0031] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0032] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.
[0033] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.
[0034] like Figure 2 and Figure 3As shown, an embodiment of this utility model provides a high-barrier film cooling device, including a fixed base 1. Fixed ears 101 are symmetrically fixed at both ends of the fixed base 1. A rotatable roller 2 is disposed between the two fixed ears 101. Grooves 102 are symmetrically formed on both sides of the fixed base 1, and the grooves 102 are parallel to the roller 2. Roller shafts 201 are fixed at both ends of the roller 2 and pass through corresponding through holes formed in the middle of the fixed ears 101, forming a rotatable installation.
[0035] A support base 3 parallel to the roller 2 is fixed between the two fixed ears 101. Support ears 301 are symmetrically fixed at both ends of the support base 3. An opening is provided in the middle of the support ear 301, and a bearing 302 for the roller shaft 201 to pass through is fixed thereon. At least two bolts 303 are provided on the support ear 301 and are threadedly inserted and fixed to the fixed ears 101.
[0036] Cooperate Figure 4 As shown, a heat insulation cover 4 for covering the lower half of the roller 2 is fixed to the upper end face of the support base 3. An extension cover 5 is movably disposed on the inner side of the heat insulation cover 4. The heat insulation cover 4 has sliding grooves 401 along the circumferential direction of its arc surface on both sides. Two extension covers 5 are provided, located on the inner walls of the heat insulation cover 4 on both sides respectively. A stud 501 is fixed to the bottom end of each extension cover 5, and the stud 501 slides within the corresponding sliding groove 401. A fastening cap 502 is threaded onto the end of the stud 501 extending out of the sliding groove 401, and the fastening cap 502 abuts against the outer surface of the heat insulation cover 4 to form a limiting and fixing mechanism.
[0037] like Figure 5 As shown, the roller 2 and the roller shaft 201 are hollow inside and have channels for coolant. Several partitions 202 are alternately arranged on both sides of the inner wall of the channel to form a bent channel.
[0038] The working principle of this utility model is as follows: When using this high-barrier film cooling device, the high-barrier film can be wrapped around the upper surface of the roller 2 (wrapped at about 180 degrees). The high-barrier film is rapidly cooled and shaped by the coolant inside the roller 2. The bending channel formed by the partition 202 inside the roller 2 can increase the residence time of the coolant, thereby ensuring the heat exchange effect on the high-barrier film.
[0039] During the cooling process described above, the insulation cover 4 on the support 3 covers the lower half of the roller 2 to enclose the non-working area of the roller 2 (without affecting the film path), thereby reducing the impact of the environment on the cooling effect of the roller 2. Specifically, depending on the actual film path, the extension cover 5 can be slidable via the stud 501 to adjust the combined coverage area of the insulation cover 4 and the extension cover 5 on the lower surface (non-working area) of the roller 2, effectively and flexibly reducing the impact of ambient temperature on the cooling effect of the high-barrier film on the roller 2.
[0040] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A high-barrier film cooling device, comprising a fixed base (1), characterized in that, The fixed base (1) is symmetrically fixed with fixed ears (101) at both ends. A rotatable roller (2) is provided between the two fixed ears (101). A support base (3) parallel to the roller (2) is also fixed between the two fixed ears (101). A heat insulation cover (4) for covering the lower half of the roller (2) is fixed on the upper end surface of the support base (3). An extension cover (5) is movably provided on the inner side of the heat insulation cover (4).
2. The high-barrier film cooling device according to claim 1, characterized in that, The fixed base (1) has symmetrical grooves (102) on both sides, and the grooves (102) are parallel to the roller (2).
3. The high-barrier film cooling device according to claim 1, characterized in that, The roller (2) has roller shafts (201) fixed at both ends and pass through the through holes corresponding to the middle of the fixing ears (101). The support base (3) has support ears (301) fixed symmetrically at both ends. The support ears (301) have an opening in the middle and a bearing (302) for the roller shafts (201) to pass through is fixed thereon.
4. The high-barrier film cooling device according to claim 2, characterized in that, The support ear (301) is provided with at least two bolts (303) and is threadedly connected to the fixing ear (101) for fixation.
5. The high-barrier film cooling device according to claim 1, characterized in that, The heat insulation cover (4) has sliding grooves (401) on both sides along the circumferential direction of the arc surface, and there are two extension covers (5), which are located on the inner walls of both sides of the heat insulation cover (4). The bottom end of the extension cover (5) is fixed with a stud (501), and the stud (501) is slidably placed in the corresponding sliding groove (401).
6. The high-barrier film cooling device according to claim 5, characterized in that, The end of the stud (501) extending out of the groove (401) is threaded with a fastening cap (502), and the fastening cap (502) abuts against the outer surface of the heat insulation cover (4) to form a limiting fixation.
7. The high-barrier film cooling device according to claim 1, characterized in that, The roller (2) and the roller shaft (201) are hollow inside and have a channel for coolant. Several partitions (202) are alternately arranged on both sides of the inner wall of the channel to form a bent channel.