A ventable release film
By setting venting slots and drainage grooves on the release film, the problems of poor air permeability and water conductivity of existing release films are solved, achieving effective gas and liquid conduction and enhancing the compressive strength of the film.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU ZHANMING FILM TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-08-04
AI Technical Summary
Existing release membranes have poor air permeability and water conductivity, making it difficult to effectively provide air exchange and drainage for laminated membranes.
A ventable release membrane was designed, comprising a laminated membrane assembly and a venting and liquid discharge assembly. By setting venting slots and liquid discharge grooves on the pressure-bearing membrane layer, and utilizing the venting and liquid discharge assembly composed of a guide plate, a sealing plate, and a shell, effective gas and liquid can be guided.
It enables effective venting and drainage of water on the surface of the laminated membrane under pressure, thereby improving the membrane's permeability and compressive strength.
Smart Images

Figure CN224585401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of release film technology, specifically to a ventable release film. Background Technology
[0002] Release film is a product made by coating the surface of PET film with a release agent (such as silicone oil, fluorine, or a mixture of silicone and fluorine).
[0003] Based on the coating method, release films can be divided into single-sided release films and double-sided release films. In addition, products coated with silicone oil are called silicone oil release films, while products coated with fluorine are called fluorine release films.
[0004] However, release membranes have certain defects due to their own structure during actual use. Because of their simple structure, the air permeability of both sides of the membrane is poor. As a medium for isolation and filling, it is difficult to provide effective air exchange on the membrane surface and drainage of stagnant water for the laminated membrane.
[0005] In view of this, a ventable release film was designed to solve the above problems. Utility Model Content
[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0007] Therefore, the technical solution adopted by this utility model is as follows:
[0008] A ventable release membrane includes a laminated membrane assembly and two sets of venting and draining components installed within the laminated membrane assembly. The laminated membrane assembly includes a release membrane body and two pressure-bearing membrane layers installed at the top and bottom of the release membrane body. The pressure-bearing membrane layers have a top venting slot at the top and a bottom venting slot at the bottom, and a U-shaped draining groove on the side of the pressure-bearing membrane layer away from the release membrane body. The venting and draining components include a guide plate disposed between the two pressure-bearing membrane layers, two sealing plates fixedly installed at both ends of the guide plate, and a shell fixedly installed between the two guide plates.
[0009] In a preferred embodiment, the present invention can be further configured such that the laminated film assembly also includes a first edge protector and a second edge protector.
[0010] The outer walls of the first and second edge protectors are provided with anti-slip grooves, and the inner ends of the first and second edge protectors are adapted to fit onto the two sealing plates.
[0011] In a preferred embodiment, the present invention can be further configured such that: four top holes are provided at the top of the pressure-bearing membrane layer, and four bottom holes are provided at the bottom of the pressure-bearing membrane layer.
[0012] In a preferred embodiment, the present invention can be further configured such that: four vertical holes are provided inside the outer shell, and four inner ring sleeves are fixedly installed in the four vertical holes;
[0013] The end of the guide plate that extends into the inner cavity of the outer shell is fixedly installed in the middle of the four inner rings.
[0014] In a preferred embodiment, the present invention can be further configured such that: the venting and liquid discharge assembly further includes a pressure-reducing sleeve inserted into the inner ring sleeve, and the number of pressure-reducing sleeves is eight, with four pressure-reducing sleeves forming a group;
[0015] One set of pressure-reducing sleeves is inserted into multiple top holes, and the other set of pressure-reducing sleeves is inserted into multiple bottom holes.
[0016] In a preferred embodiment, the present invention can be further configured such that the pressure-reducing sleeve is made of rubber material.
[0017] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:
[0018] 1. This utility model uses a release membrane body as the center, and two pressure-bearing membrane layers are installed on the top and bottom surfaces of the release membrane body. Two sets of venting and liquid discharge components are set between the two pressure-bearing membrane layers and the release membrane body. When the membrane body is used as an isolation and filling medium, the stacked membrane body can vent after being pressurized, and effectively drain the water accumulated on the front and back of the stacked membrane. Attached Figure Description
[0019] Figure 1 This is a schematic diagram illustrating the use of this utility model;
[0020] Figure 2 This is an exploded view of the present invention;
[0021] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;
[0022] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle;
[0023] Figure 5 This is an exploded schematic diagram of the drainage and discharge assembly of this utility model.
[0024] Figure label:
[0025] 100. Composite membrane assembly; 110. Release membrane body; 120. Pressure-bearing membrane layer; 1201. Top hole; 1202. Bottom hole; 1203. Top vent; 1204. Bottom vent; 1205. Drainage groove; 130. First edge protector; 140. Second edge protector;
[0026] 200. Exhaust and liquid discharge assembly; 210. Baffle plate; 220. Sealing plate; 230. Outer shell; 240. Inner ring sleeve; 250. Pressure reducing sleeve. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.
[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a ventable release film.
[0030] Example 1:
[0031] Combination Figures 1 to 5 As shown, the present invention provides a ventable release membrane, including a laminated membrane assembly 100 and two sets of venting and liquid discharge assemblies 200 installed in the laminated membrane assembly 100. The two sets of venting and liquid discharge assemblies 200 are used to provide venting medium for the laminated membrane assembly 100, which serves as an isolation and medium. The laminated membrane assembly 100 is used to enhance the compressive strength of the laminated membrane.
[0032] The laminated membrane assembly 100 includes a release membrane body 110, two pressure-bearing membrane layers 120 installed on the top and bottom of the release membrane body 110, and a first edge protector 130 and a second edge protector 140 inserted into the two pressure-bearing membrane layers 120.
[0033] The pressure-bearing membrane layer 120 has a top vent 1203 at the top and a bottom vent 1204 at the bottom, and a U-shaped drainage groove 1205 on the side of the pressure-bearing membrane layer 120 away from the release membrane body 110.
[0034] The exhaust and liquid discharge assembly 200 includes a guide plate 210 disposed between two pressure-bearing membrane layers 120, two sealing plates 220 fixedly installed at both ends of the guide plate 210, and a housing 230 fixedly installed between the two guide plates 210.
[0035] The outer walls of the first edge protector 130 and the second edge protector 140 are provided with anti-slip grooves, and the inner ends of the first edge protector 130 and the second edge protector 140 are adapted to fit onto the two sealing plates 220.
[0036] The pressure-bearing membrane layer 120 has four top holes 1201 at its top end and four bottom holes 1202 at its bottom end.
[0037] Preferably, the top and bottom ends of the pressure-reducing sleeve 250 are flush with the membrane surfaces of the two pressure-bearing membrane layers 120, while the first edge protector 130 and the second edge protector 140, which are evenly distributed at both ends of the two sets of venting and liquid discharge components 200, can provide side protection for the release membrane body 110 and enhance the pressure-bearing capacity of the surface of the pressure-bearing membrane layer 120.
[0038] When the top hole 1201 is vertically upward, the liquid discharged through the top set of venting and draining components 200 will transfer downward along the two draining grooves 1205, and the water discharged along the two draining grooves 1205 will not affect the clarity of the pressure-bearing membrane layer 120.
[0039] Example 2:
[0040] Combination Figures 3 to 5 As shown, based on Embodiment 1, the outer shell 230 has four vertical holes inside, and four inner ring sleeves 240 are fixedly installed in the four vertical holes;
[0041] The end of the guide plate 210 that penetrates into the inner cavity of the outer shell 230 is fixedly installed in the middle of the four inner ring sleeves 240, and the pressure reducing sleeve 250 is inserted into the inner ring sleeve 240. There are eight pressure reducing sleeves 250, and four pressure reducing sleeves 250 form a group.
[0042] One set of pressure-reducing sleeves 250 is inserted into multiple top holes 1201, and another set of pressure-reducing sleeves 250 is inserted into multiple bottom holes 1202. The pressure-reducing sleeves 250 are made of rubber material.
[0043] Preferably, the outer end faces of the two outer shells 230 are aligned with the outer walls of the first edge protector 130 and the second edge protector 140, and the combined two sets of venting and liquid discharge assemblies 200, together with the first edge protector 130 and the second edge protector 140, form a closed-loop structure to enhance the pressure resistance of the two pressure-bearing membrane layers 120.
[0044] When the membrane is used directly as a single membrane, the bolt is inserted into the pressure reducing sleeve 250 until the bolt fixes the membrane in the predetermined frame. At this time, the composite release membrane can exhaust air and drain liquid from the inside to the outside of the equipment.
[0045] The working principle and usage process of this utility model are as follows: When in use, the two sets of venting and liquid discharge components 200 are inserted into the gaps between the two pressure-bearing membrane layers 120 until the two sets of venting and liquid discharge components 200 are respectively snapped into the rectangular grooves at the top and bottom of the release membrane body 110. Then, the first edge protector 130 and the second edge protector 140 are respectively snapped into the gaps at both ends of the two pressure-bearing membrane layers 120, and the inner ends of the first edge protector 130 and the second edge protector 140 will be attached to the sealing plate 220.
[0046] Next, multiple pressure-reducing sleeves 250 are inserted along the top hole 1201 and bottom hole 1202 until the multiple pressure-reducing sleeves 250 are inserted into the interior of multiple inner rings 240. Then, the release membrane can be installed in the reserved frame using bolts. Airflow can be input through the top vent 1203 and bottom vent 1204 in one of the inner rings. After being transferred by the two sets of venting and liquid discharge components 200, the airflow will be released from the top vent 1203 and bottom vent 1204 in the other pressure-bearing membrane layer 120, while the water flow will be released from the liquid discharge groove 1205, reducing the impact of water flow on the clarity of the pressure-bearing membrane layer 120.
[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An air-ventable release film comprising a laminated film assembly (100), characterized in that, It also includes two sets of venting and liquid discharge assemblies (200) installed in the composite membrane assembly (100); The composite membrane assembly (100) includes a release membrane body (110) and two pressure-bearing membrane layers (120) installed on the top and bottom of the release membrane body (110). The pressure-bearing membrane layer (120) has a top venting slot (1203) at the top and a bottom venting slot (1204) at the bottom. A U-shaped drainage groove (1205) is provided on the side of the pressure-bearing membrane layer (120) away from the release membrane body (110). The venting and liquid discharge assembly (200) includes a guide plate (210) disposed between two pressure-bearing membrane layers (120), two sealing plates (220) fixedly installed at both ends of the guide plate (210), and a housing (230) fixedly installed between the two guide plates (210).
2. The ventable release film according to claim 1, wherein The laminated membrane assembly (100) also includes a first edge protector (130) and a second edge protector (140). The outer walls of the first edge protector (130) and the second edge protector (140) are provided with anti-slip grooves, and the inner ends of the first edge protector (130) and the second edge protector (140) are adapted to fit onto the two sealing plates (220).
3. The ventable release film according to claim 1, wherein The pressure-bearing membrane layer (120) has four top holes (1201) at its top end and four bottom holes (1202) at its bottom end.
4. The ventable release film according to claim 1, wherein The outer shell (230) has four vertical holes inside, and four inner ring sleeves (240) are fixedly installed in the four vertical holes. The end of the guide plate (210) that extends through the inner cavity of the outer shell (230) is fixedly installed in the middle of the four inner rings (240).
5. The ventable release film according to claim 1, wherein The venting and liquid discharge assembly (200) also includes a pressure-reducing sleeve (250) inserted into the inner ring sleeve (240), and the number of pressure-reducing sleeves (250) is eight, with four pressure-reducing sleeves (250) forming a group. One set of pressure-reducing sleeves (250) is inserted into multiple top holes (1201), and another set of pressure-reducing sleeves (250) is inserted into multiple bottom holes (1202).
6. An exhaustable release film according to claim 5, wherein The pressure relief sleeve (250) is made of rubber material.