Glue joint method for glue joint cork board and base material

Abstract

The invention provides a gluing method for gluing a cork board and a base material, which comprises the following steps of: 1, brushing glue on the gluing surface of the cork board and the base material, and adhering the cork board and the base material; 2, the airtight bag film is pasted to the base material through a sealing rubber strip, the cork board pasted to the base material is covered with the airtight bag film, and an airtight area is formed at the glue joint position of the cork board; and 3, an opening is formed in the airtight bag film, a suction head communicated with a vacuum pump is placed in the airtight bag film, the airtight area in the airtight bag film is pressurized through the vacuum pump, negative pressure is formed in the airtight area, and gluing of the cork board and the base material is achieved. Large and uniform contact pressure is provided for the glue joint area of the cork board in a vacuum pressing mode, and the glue joint strength and the glue joint quality between the cork board and the base material are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cork processing, in particular to a method for gluing a cork board and a substrate, and in particular to a process method and a device for gluing a cork board based on a sheet metal riveting structure surface pressurized. Background Art

[0002] Cork is composed of a variety of flat cells arranged radially, and has excellent sealing, thermal insulation, electrical insulation, abrasion resistance, corrosion resistance, etc., so it is often used as a thermal insulation material for aerospace vehicles. Cork boards are usually glued to the surface of the product by hand pressing with adhesive to play a role in heat insulation.

[0003] Since the cork board is large for a single pasting, the hand pressing area is small, and the force is uneven, bubbles, bulging or debonding of varying degrees are likely to occur, thereby affecting product quality. The present application increases the contact pressure and pressure uniformity of cork pasting by vacuum pressing, thereby improving the quality of cork gluing. Summary of the invention

[0004] In view of the defects in the prior art, the object of the present invention is to provide a method for gluing a cork board and a substrate.

[0005] A method for gluing a cork board and a substrate provided by the present invention comprises the following steps:

[0006] Step 1: Apply glue to the bonding surface of the cork board and the substrate to stick the cork board and the substrate together;

[0007] Step 2: Use a sealing tape to stick the airtight bag film on the substrate, so that the airtight bag film covers the cork board stuck on the substrate, and an airtight area is formed at the gluing position of the cork board;

[0008] Step 3: Open an opening on the airtight bag film, and place the suction head connected to the vacuum pump into the airtight bag film. Use the vacuum pump to pressurize the airtight area in the airtight bag film to form a negative pressure in the airtight area, thereby achieving bonding of the cork board and the substrate.

[0009] Preferably, in step 1, before applying the glue, a mixed putty of cork powder and glue is scraped and applied on the leak-prone area of ​​the substrate, and the mass ratio of cork powder to glue is 1:5 to 1:3.

[0010] Preferably, in step 1, after pasting, the surface of the cork board is covered with a release cloth.

[0011] Preferably, in step 1, after pasting, the surface of the cork board is covered with air-permeable felt.

[0012] Preferably, in step 3, after the suction head is placed in the airtight bag film, a pad is placed under the suction head, the pad fits the surface shape of the cork board, and the edge of the pad coincides with the seam of the cork board.

[0013] Preferably, in step 3, the pressure during the cork gluing process is monitored and adjusted by a vacuum gauge on an air pipe or a vacuum pump.

[0014] Preferably, the release cloth is 60g to 105g / cm 2 Polyester release cloth.

[0015] Preferably, the air-permeable felt is 150 g / cm 2 PET breathable felt.

[0016] Preferably, the backing plate is made of an aluminum alloy backing plate.

[0017] Preferably, holes are punched on the pad.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. After the cork board and the base material are glued and pasted on the adhesive joint surface, the present invention uses sealant and airtight bag film to form an airtight area at the gluing position of the cork board, and puts a suction head in the middle opening of the airtight bag film, connects and starts a vacuum pump to pressurize and glue the cork board.

[0020] 2. The pressurized gluing process of the present invention provides a larger and more uniform contact pressure for the gluing area of ​​the cork board by vacuum pressing, thereby improving the gluing strength and gluing quality between the cork board and the substrate.

[0021] 3. The present invention effectively improves the contact pressure and pressure uniformity of the cork gluing process through vacuum pressing, avoids the generation of bubbles, bulging or debonding caused by uneven manual pressing, enhances the controllability of the cork gluing process, and improves the consistency of the cork gluing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 A flow chart of steps for a method of gluing a cork board and a substrate;

[0024] Figure 2 Schematic diagram showing the structure of glued cork board and substrate.

[0025] Figure 3 Schematic diagram showing the cross-sectional structure of the glued cork board and substrate.

[0026] The figure shows:

[0027] Vacuum pump 1 Sealing strip 6

[0028] Trachea 2 Base material 7

[0029] Suction head 3 Release cloth 8

[0030] Cork board 4 Breathable felt 9

[0031] Airtight bag film 5 Pad 10 DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0033] Embodiment 1:

[0034] like Figures 1 to 3 As shown, this embodiment provides a method for gluing a cork board and a substrate, comprising the following steps:

[0035] Step 1: Apply glue to the bonding surface of the cork board 4 and the substrate 7, and paste the cork board 4 and the substrate 7; in step 1, before applying glue, apply the cork powder-glue mixed putty on the leak-prone area of ​​the substrate 7, and the mass ratio of cork powder to glue is 1:5 to 1:3; in step 1, after pasting, cover the surface of the cork board 4 with a release cloth 8, and the release cloth 8 is 60g to 105g / cm 2 In step 1, after pasting, the surface of the cork board 4 is covered with a breathable felt 9, and the breathable felt 9 is made of 150g / cm 2 PET breathable felt9.

[0036] Step 2: Use the sealing tape 6 to stick the airtight bag film 5 on the substrate 7 so that the airtight bag film 5 covers the cork board 4 stuck on the substrate 7, and an airtight area is formed at the gluing position of the cork board 4.

[0037] Step 3: Open an opening on the airtight bag film 5, and place the suction head 3 connected to the vacuum pump 1 into the airtight bag film 5, and place a pad 10 under the suction head 3, and the pad 10 fits the surface shape of the cork board 4. The pad 10 is made of aluminum alloy. Punch a hole in the pad 10. Adjust the position of the suction head 3 and the pad 10 so that the edge of the pad 10 coincides with the seam of the cork board 4. Pressurize the airtight area in the airtight bag film 5 through the vacuum pump 1 to form a negative pressure in the airtight area, so as to achieve the bonding of the cork board 4 and the substrate 7; in step 3, the pressure in the cork bonding process is monitored and adjusted through the air pipe or the vacuum gauge on the vacuum pump 1.

[0038] The edge of the pad 10 overlaps with the seam of the cork board 4 to reduce the degree of deformation of the cork.

[0039] This embodiment also provides a device for pressurized gluing of cork boards, comprising: a vacuum pump 1, an air pipe 2, a suction head 3, a sealing tape 6 and an airtight bag film 5, wherein the vacuum pump 1 is arranged together with the suction head 3 through the air pipe 2, the airtight bag film 5 and the sealing tape 6 are used to form an airtight area at the colloid position, and the suction head 3 is connected to the airtight bag film 5. The device for pressurized gluing of cork boards is used to perform gluing of cork boards on the surface of a substrate.

[0040] Embodiment 2:

[0041] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0042] This embodiment provides a process for pressurized gluing of cork boards, wherein a sealing area is formed by an airtight bag film 5 and a sealing strip 6, and a vacuum pump 1 is used to form a negative pressure in the sealing area to press the cork board 4 against the substrate surface 7.

[0043] This embodiment also provides a pressurized gluing device for cork boards, comprising: a vacuum pump 1, an air pipe 2, a suction head 3, an airtight bag film 5, and a sealing tape 6. The airtight bag film 5 and the sealing tape 6 are used to form an airtight area; the vacuum pump 1, the air pipe 2, and the suction head 3 are used to generate negative pressure in the sealing area.

[0044] After brushing glue and pasting the joint surface of the cork board and the base material, use sealant and airtight bag film to form an airtight area at the cork bonding position, put a suction head in the middle opening of the airtight bag film, connect and start the vacuum pump to pressurize and glue the cork board.

[0045] The vacuum pump 1 controls the vacuum degree in the sealing area, thereby ensuring the stable and controllable pressure during the cork gluing process and improving the stability of the gluing quality.

[0046] For areas prone to air leakage, such as joints on the surface of sheet metal riveted structures, a mixture of glue and cork powder is applied before gluing to improve the air tightness of the sealed area without affecting the quality of gluing.

[0047] Cover the cork surface with release cloth to isolate the overflowed glue and prevent the cork surface from being damaged.

[0048] Covering the cork surface with breathable felt increases the gas passage and improves the uniformity of airflow during vacuuming.

[0049] Place a pad under the suction head, which fits the shape of the cork surface to prevent the cork from being deformed due to the suction head squeezing.

[0050] The method of this embodiment solves the shortcomings of poor cork gluing quality consistency and easy occurrence of bulging and debonding due to uneven pressing in the current manual cork gluing process. The method of this embodiment can realize vacuum compression cork gluing, reduce defects on the gluing surface, and improve the consistency of gluing quality.

[0051] Embodiment 3:

[0052] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0053] like Figures 1 to 3 As shown, this embodiment provides a process method and device for pressurizing and gluing cork boards on the surface of sheet metal riveted structures. The device includes: a vacuum pump 1, an air pipe 2, a suction head 3, an airtight bag film 5, and a sealing strip 6.

[0054] The airtight bag film 5 and the sealing strip 3 are used to form an airtight area. A 3mm*12mm butyl sealing strip is pasted on the substrate 7 around the cork bonding area, and then a 75μm thick airtight bag film is covered on the cork surface and sealed with the sealing strip to form an airtight area inside the substrate 7, the sealing strip 3 and the airtight bag film 5.

[0055] The vacuum pump 1, the air pipe 2 and the suction head 3 are used to generate negative pressure in the airtight area. The pressure during the cork gluing process can be monitored and adjusted by the vacuum gauge on the air pipe or the vacuum pump.

[0056] Release cloth 8 is used to isolate the glue liquid, using 60~105g / cm 2 The polyester release cloth is laid on the cork surface to prevent the overflowed glue from bonding with other materials and damaging the cork surface.

[0057] The air-permeable felt 9 is used to distribute the airflow evenly, and is made of 150g / cm 2 PET breathable felt is laid on the surface of the release cloth to prevent local airflow blockage and improve the efficiency and uniformity of vacuuming.

[0058] The pad 10 is used to disperse the pressure of the suction head. It is made of aluminum alloy. The shape of the pad fits the surface curve of the product. The pad is perforated to increase the gas passage to prevent the cork from being deformed due to the squeezing of the suction head without affecting the vacuum efficiency.

[0059] The process of using the device is as follows:

[0060] If there are seams and other areas prone to air leakage on the substrate, use cork powder-glue mixed putty to scrape and apply it on the seams. After the putty is cured, brush and stick the glue on the bonding surface of the cork and the product, cover the cork surface with release cloth and breathable felt in turn, and then use sealant and airtight bag film to form an airtight area at the cork bonding position, and put a suction head in the middle opening of the airtight bag film, connect and start the vacuum pump to pressurize and bond the cork board.

[0061] The present invention provides a larger and more uniform contact pressure for the gluing area of ​​the cork board by vacuum pressing, thereby improving the gluing strength and gluing quality between the cork board and the base material.

[0062] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0063] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A method for gluing a cork board and a substrate, characterized in that: The steps include: Step 1: Apply glue to the bonding surface of the cork board (4) and the base material (7) to bond the cork board (4) and the base material (7); Step 2: Use a sealing tape (6) to stick the airtight bag film (5) on the substrate (7) so that the airtight bag film (5) covers the cork board (4) stuck on the substrate (7), and an airtight area is formed at the gluing position of the cork board (4); Step 3: Open an opening on the airtight bag film (5), and place a suction head (3) connected to a vacuum pump (1) into the airtight bag film (5). The vacuum pump (1) applies pressure to the airtight area in the airtight bag film (5) to form a negative pressure in the airtight area, thereby achieving gluing of the cork board (4) and the substrate (7).

2. The method for gluing a cork board and a substrate according to claim 1, characterized in that: In the step 1, before applying the glue, a mixed putty of cork powder and glue is scraped and applied to the leak-prone area of ​​the substrate (7), and the mass ratio of the cork powder to the glue is 1:5 to 1:

3.

3. The method for gluing a cork board and a substrate according to claim 1, characterized in that: In the step 1, after pasting, the surface of the cork board (4) is covered with a release cloth (8).

4. The method for gluing a cork board and a substrate according to claim 1, characterized in that: In the step 1, after pasting, the surface of the cork board (4) is covered with an air-permeable felt (9).

5. The method for gluing a cork board and a substrate according to claim 1, characterized in that: In the step 3, after the suction head (3) is placed in the airtight bag film (5), a pad (10) is placed under the suction head (3), the pad (10) fits the surface shape of the cork board (4), and the edge of the pad (10) overlaps with the seam of the cork board (4).

6. The method for gluing a cork board and a substrate according to claim 1, characterized in that: In step 3, the pressure during the cork gluing process is monitored and adjusted through the vacuum gauge on the air pipe or vacuum pump (1).

7. The method for gluing a cork board and a substrate according to claim 3, characterized in that: The release cloth (8) is 60g to 105g / cm 2 Polyester release cloth (8).

8. The method for gluing a cork board and a substrate according to claim 4, characterized in that: The air-permeable felt (9) is made of 150g / cm 2 PET breathable felt (9).

9. The method for gluing a cork board and a substrate according to claim 5, characterized in that: The backing plate (10) is an aluminum alloy backing plate (10).

10. The method for gluing a cork board and a substrate according to claim 5, characterized in that: Holes are punched on the backing plate (10).

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