Enveloping method for coating silicon gel rubber with plastic film and finished product thereof

Abstract

The invention relates to a sealing method for coating plastic film with silica gel and the product. Plasma treatment or electron beam treatment is mainly carried out to the contact face between a first and a second plastic films and the silica gel so that wettability of contact face between the first and the second plastic films and the silica gel is increased and the contact face can be jointed with the silica gel tightly. Subsequently, in vacuum circumstance one-time sealing operation between the first and the second plastic films and the silica gel is carried out so that there is no air bubble in product. At the same time, sealing line of sealed film has not gap and the risk of glue overflowing is decreased greatly.

Description

Technical field [0001] The present invention relates to a sealing method in which silicone gel is covered by a plastic film and its finished products, in particular to a method of first performing plasma treatment on the contact surfaces of the first and second plastic films that will be connected to the silicone gel (PLASMA -CASING PROCESS, CROSSLINKING BY ACTIVATED SPACIES OFINTER GASES) or electron beam treatment (Electron Beam), and then in a vacuum environment for one-time sealing of silicone gel and plastic film. The silicone gel is covered by plastic film. And its finished products. Background technique [0002] Please refer to Figures 1A, 1B, 1C, and 1D, which are schematic diagrams of conventional silicone gel sealing methods. It is known that the general sealing method in which silicone gel is coated with plastic film is the sealing industry of coating under atmospheric pressure. The steps are as follows: [0003] Step 1: Firstly, two plastic films 41, 42 are formed by ...

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Problems solved by technology

[0008] However, the above-mentioned silicone gel sealing method still has the following deficiencies:

[0009] 1. The conventional sealing operation needs to be carried out twice, resulting in increased man-hours; moreover, because the sealing line has seams, there are often unfavorable situations of glue overflow

[0010] 2. The contact surfaces of the conventional silicone gel 2 and the plastic films 41 and 42 are bonded by an adhesive, which causes the operator to spend a lot of time on smearing and mixing, which is really time-consuming and labor-intensive.

Moreover, through the adhesive bonding method, the characteristics of the silicone gel 2 will be damaged, making the sealed silicone gel product less stable.

[0011] 3. Conventional silicone gel 2 completes the sealing operation in the atmospheric environment, causing the bag body formed by the plastic films 41, 42 to be filled with air 45. When the silicone gel 2 is poured, there will be air bubbles 44 and air 45. It also needs manpower to squeeze out the air bubbles 44 and air 45, and this kind of operation method will lead to the following defects:

[0012] (1) Bubbles and air cannot be completely squeezed out, so that the silicone gel product may be peeled off when the environment changes or the conditions are harsh (such as: air transportation process), and the contact surface between the silicone gel and the film may be peeled off

[0013] (2) Unable to isolate bacteria or pollutants

[0014] (3) Artificial manufacturing method, the quality is unstable and unstable due to human factors, resulting in an increase in the defective rate

[0015] (4) The consumption of manpower and working hours leads to the inability to increase the production capacity

[0016] It can be seen that there are still many deficiencies in the above-mentioned commonly used methods, which is not a good design and needs to be improved urgently.

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