An anti-sticking, anti-dropping and conductive foam used for a computer case

Abstract

The present invention discloses an anti-sticking and anti-falling conductive foam for computer casings, comprising a release paper, an upper protective film, a lower protective film, a support frame and a release film arranged in sequence from top to bottom. The upper protective film and the lower protective film have the same structure, the same number and one-to-one correspondence in position. All the upper protective films and the lower protective films are placed parallel to the release paper. The side of the lower protective film away from the upper protective film is provided with conductive foam at intervals. The support frame is provided with a hollow, and the conductive foam is located in the hollow and the adhesive surface of the conductive foam facing the release film does not contact the release film. In the present invention, by providing a support frame with a thickness greater than that of the conductive foam, the problem of easy sticking of the conductive foam in the prior art is solved. By bonding the support frame and the polyester film to each other and then connecting the lower protective film, the problem of easy falling of the conductive foam in the prior art is solved. The structure is simple and reasonable. The conductive foam obtained by the present invention has the advantages of conductivity, high adhesion, easy peeling, anti-static, anti-sticking, and anti-falling, and is suitable for industrial promotion and use.

Description

Technical Field

[0001] The invention belongs to the technical field of conductive foam, and particularly relates to an anti-sticking and anti-falling conductive foam for a computer casing. Background Art

[0002] With the continuous advancement of technology, conductive foam is increasingly used in electronic products such as computers and mobile phones, and the requirements for conductive foam are becoming increasingly stringent. Current conductive foam used in computer cases has large pores on its surface, making it difficult to remove the protective film on the surface. If the protective film is highly viscous, the surface of the conductive foam is easily torn when the customer removes the protective film. However, if the protective film is less viscous, the conductive foam will stick to the release film when the customer removes the product from it. Furthermore, the conductive foam often falls off. Therefore, developing a new conductive foam for computer cases that prevents sticking and falling off is of great practical significance. Summary of the Invention

[0003] In order to solve the technical problems existing in the prior art, the purpose of the present invention is to provide an anti-sticking and anti-falling conductive foam for a computer case.

[0004] In order to achieve the above-mentioned purpose and the above-mentioned technical effect, the technical solution adopted by the present invention is:

[0005] A conductive foam for preventing sticking and falling off for a computer case includes a release paper, an upper protective film, a lower protective film, a support frame and a release film arranged in sequence from top to bottom. The upper protective film and the lower protective film are respectively provided with a plurality of them, and the upper protective films and the lower protective films have the same structure, the same number and one-to-one correspondence. All the upper protective films and the lower protective films are placed parallel to the release paper. Conductive foam is arranged at intervals on the side of the lower protective film away from the upper protective film. Several hollows are opened on the support frame. The thickness of the support frame is greater than the thickness of the conductive foam. The conductive foam is located in the hollows and the adhesive surface of the conductive foam facing the release film does not contact the release film.

[0006] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, a protrusion is provided at the same position of the upper protective film and the lower protective film, and each protrusion is provided with a conductive foam adapted thereto.

[0007] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, the adhesive surface of the upper protective film faces downward, and the peeling force is 100-200 gf / inch; the adhesive surface of the lower protective film faces downward, and the peeling force is 250-400 gf / inch.

[0008] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, a polyester film is provided between the lower protective film and the conductive foam, and the polyester film is bonded to the support frame.

[0009] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, the support frame includes a support protective film, double-sided tape I, foam, and double-sided tape II arranged in sequence from top to bottom. The support protective film is bonded to a polyester film and then connected to a lower protective film. The peeling force of the support protective film is 2-6g / 25mm, and the thickness is 57-63μm. The thicknesses of the double-sided tape I and double-sided tape II are 80-100μm respectively. The thickness of the foam is 1.2mm and the hardness is 25-35 degrees.

[0010] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, three hollows are opened in the middle position of the support frame, which are hollow I, hollow II, and hollow III from left to right. The hollow I, hollow II, and hollow III are all square structures. The conductive foam on the protrusion of the lower protective film is all located in hollow II, and the remaining conductive foam is located in hollow I or hollow III respectively.

[0011] In the anti-sticking and anti-falling conductive foam for computer casing provided by the present invention, the thickness of the conductive foam is 0.3-0.7 mm, the viscosity is greater than 1500 g / inch, and the surface resistance is ≤0.15 Ω / inch 2 , vertical resistance ≤ 0.02Ω / inch 2 , compression ratio 50%.

[0012] In the anti-sticking and anti-shedding conductive foam for a computer case provided by the present invention, the basis weight of the release paper is 105-115 g / m 2 , the release paper 1 is in a square structure.

[0013] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, the thickness of the upper protective film is 65-85 μm.

[0014] In the anti-sticking and anti-falling conductive foam for a computer case provided by the present invention, the thickness of the lower protective film is 85-95 μm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention discloses an anti-sticking and anti-falling conductive foam for a computer case, comprising a release paper, an upper protective film, a lower protective film, a support frame and a release film which are arranged in sequence from top to bottom. A plurality of upper protective films and a plurality of lower protective films are respectively provided, and the upper protective films and the lower protective films have the same structure, the same number and one-to-one correspondence. All the upper protective films and the lower protective films are placed parallel to the release paper, and a side of the lower protective film away from the upper protective film is provided with conductive foam at intervals. A plurality of hollows are provided on the support frame, and the thickness of the support frame is greater than that of the conductive foam. The conductive foam is located in the hollows, and the adhesive surface of the conductive foam facing the release film does not contact the release film. The anti-sticking and anti-falling conductive foam for computer cases provided by the present invention solves the problem of easy sticking of the conductive foam in the prior art by providing a support frame with a thickness greater than that of the conductive foam. The problem of easy falling off of the conductive foam in the prior art is solved by bonding the support frame and the polyester film to each other and then connecting the lower protective film. The overall structure is simple and reasonable. The conductive foam obtained by the present invention combines the advantages of conductivity, high adhesion, easy peeling, anti-static, anti-sticking, and anti-falling, and is suitable for industrial promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 An exploded view of the present invention;

[0019] Figure 3 This is a product diagram of the present invention. DETAILED DESCRIPTION

[0020] The present invention is described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0021] The following is a brief summary of one or more aspects to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceivable aspects and is neither intended to identify key or critical elements of all aspects nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that will be provided later.

[0022] like Figure 1-3As shown, a conductive foam for preventing sticking and falling off for a computer case includes a release paper 1, an upper protective film 2, a lower protective film 3, a support frame 4 and a release film 5 arranged in sequence from top to bottom. The upper protective film 2 and the lower protective film 3 are provided with a plurality of them. The upper protective films 2 and the lower protective films 3 have the same structure, the same number and a one-to-one correspondence. All the upper protective films 2 and the lower protective films 3 are placed on the release paper 1 in a spaced and parallel manner. A protrusion 6 is provided at the same position of the upper protective film 2 and the lower protective film 3. The adhesive surface of the upper protective film 2 faces downward, and the peeling force is 100-200 gf / inch. The adhesive surface (silicone) of the lower protective film 3 faces downward, and the peeling force is 250- 400gf / inch, conductive foam 7 is arranged on each lower protective film 3, and a polyester film 8 is arranged between the lower protective film 3 and the conductive foam 7. The polyester film 8 adopts 6020 series polyester film for electrical insulation. The polyester film 8 has good dielectric properties and high physical and mechanical properties. The thickness is 50μm. The polyester film 8 is bonded to the support frame 4. A conductive foam 7 adapted to it is provided on each protrusion 6. The thickness of the support frame 4 is greater than the thickness of the conductive foam 7. The conductive foam 7 is located in the hollow of the support frame 4 and the adhesive surface of the conductive foam 7 facing the release film 5 does not contact the release film 5 to avoid problems such as sticking or sticking.

[0023] Release paper 1 uses 110G white double silicone (ultra-light)-J release paper, basis weight 105-115g / m 2 The release paper 1 includes 70G white base paper, and PE and silicone oil are set on two opposite sides of the 70G white base paper from the inside to the outside.

[0024] The color of the upper protective film 2 is preferably blue, the model is TR-5001-H4P, and the thickness is 65-85μm. The upper protective film 2 is a PET medium-adhesive protective film suitable for material transfer, surface protection of metal and general plastic panels. When using the upper protective film 2, you need to pay attention to: 1) Clean the oil, moisture, dust and other debris on the surface of the adhered object; 2) Since pressure-sensitive adhesive is used, a roller or punching equipment needs to be used to fully press the adhesive during pressing; 3) Since the adhesive strength itself takes a certain amount of time to fully exert, please smooth it by hand during use to avoid falling off.

[0025] The model of the lower protective film 3 is SH-50750FBAS-7, with a thickness of 85-95μm and an anti-static index of 10. 6 -10 11 Ω, excellent antistatic performance.

[0026] The support frame 4 includes a support protective film 41, a double-sided tape I 42, a foam 43, and a double-sided tape II 44 arranged in sequence from top to bottom; wherein, the support protective film 41 adopts a blue single-layer silicone protective film of model HBGT6005, which has excellent adhesive properties, a peeling force of 2-6g / 25mm, and a thickness of 57-63μm. It can be used as a protection for various electronic products and plates during processing. The support protective film 41 is bonded to the 6020 series electrical insulating polyester film 8 to avoid product Double-sided tape I 42 uses DS-10 cotton paper double-sided tape with an adhesive force greater than 1200gf / inch and a thickness of 80-100μm. It has strong adhesive force, anti-warping and heat and weather resistance, and is suitable for bonding and fixing materials such as metal, glass, and plastic sheets, as well as fixing display components such as computers. It also has good die-cutting processing performance; Foam 43 is EVA-30 with a thickness of 1.2mm, a hardness of 25-35 degrees, and a density of 85-115g / cm 3 , tensile strength is not less than 1.5KPa, elongation at break is 370-410%, compressive strength is 75-85KPa, compression permanent deformation is 50-60%, tear strength is 0-10KN / m, water absorption is 0.2-0.4%, and no cracks appeared after the ozone aging test; double-sided tape II 44 is the same model as double-sided tape I 42, with adhesion greater than 1200gf / inch and thickness of 80-100μm. It has strong adhesion, anti-warping and heat and weather resistance. It is suitable for bonding and fixing materials such as metal, glass, plastic sheets, as well as fixing display components such as computers. It also has good die-cutting processing performance.

[0027] The model of release film 5 is ASNW-75T002 (RPW), the thickness is 0.075mm±0.0075mm, and the anti-static index is 10 6 -10 11 Ω, double-sided anti-electricity, peeling force is 1-3g / 25mm.

[0028] The model of conductive foam 7 is LY-XYZ-D-05, adhesive side down, thickness is 0.3-0.7mm, viscosity>1500g / inch, surface resistance ≤0.15Ω / inch 2 , vertical resistance ≤ 0.02Ω / inch 2, with a compression ratio of 50%, offering excellent conductivity and EMI / RFI shielding. The conductive foam 7 has large pores on its surface, making it difficult to select a suitable protective film. If the protective film is highly viscous, the surface of the conductive foam 7 is easily torn when the customer removes the protective film. However, if the protective film is less viscous, the conductive foam 7 will stick to the release film 5 when the customer removes the product. In order to solve this technical problem, the present invention provides a support frame 4, and three hollow structures are opened in the middle position of the support frame 4, which are hollow I45, hollow II46, and hollow III47 from left to right. Among them, hollow I45, hollow II46 and hollow III47 are all square structures, and hollow II46 can provide enough space to accommodate all the protrusions 6, so that all the protrusions 6 and the square conductive foam 7 thereon are all located in hollow II46, and the conductive foam 7 with a strip structure on the remaining lower protective film 3 falls in the space where hollow I45 and hollow III47 are located. Since the support frame 4 has a certain thickness, the adhesive surface of the conductive foam 7 can be prevented from contacting the release film 5. In this way, when taking the product, the conductive foam 7 will not stick to the release film 5, and the anti-sticking effect is obvious. In addition, since the adhesive surface of the support protective film 41 can be bonded to the polyester film 8, it can prevent the product from falling off.

[0029] Parts or structures not specifically described in the present invention may adopt existing technologies or existing products and will not be described in detail here.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A conductive foam for preventing sticking and falling off for computer casing, characterized in that: The invention comprises a release paper, an upper protective film, a lower protective film, a support frame and a release film arranged in sequence from top to bottom, wherein a plurality of upper protective films and a plurality of lower protective films are provided, and the upper protective films and the lower protective films have the same structure, the same number and a one-to-one correspondence, and all the upper protective films and the lower protective films are placed parallel to the release paper, and a conductive foam is arranged at intervals on a side of the lower protective film away from the upper protective film, and a plurality of hollows are provided on the support frame, the thickness of the support frame is greater than the thickness of the conductive foam, the conductive foam is located in the hollows, and the adhesive surface of the conductive foam facing the release film does not contact the release film; A protrusion is provided at the same position of the upper protective film and the lower protective film, and each protrusion is provided with a conductive foam adapted thereto; A polyester film is provided between the lower protective film and the conductive foam, and the polyester film is bonded to the support frame.

2. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: The adhesive surface of the upper protective film faces downward, and the peeling force is 100-200 gf / inch. The adhesive surface of the lower protective film faces downward, and the peeling force is 250-400 gf / inch.

3. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: The support frame includes a support protective film, double-sided tape I, foam, and double-sided tape II arranged in sequence from top to bottom. The support protective film is bonded to the polyester film and then connected to the lower protective film. The peeling force of the support protective film is 2-6g / 25mm, and the thickness is 57-63μm. The thickness of the double-sided tape I and double-sided tape II are 80-100μm respectively. The thickness of the foam is 1.2mm and the hardness is 25-35 degrees.

4. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: Three hollows are opened in the middle of the support frame, which are hollow I, hollow II and hollow III from left to right. Hollow I, hollow II and hollow III are all square structures. The conductive foam on the protrusion of the lower protective film is all located in hollow II, and the remaining conductive foam is located in hollow I or hollow III respectively.

5. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: The thickness of the conductive foam is 0.3-0.7 mm, the viscosity is greater than 1500 g / inch, and the surface resistance is ≤ 0.15 Ω / inch. 2 , vertical resistance ≤ 0.02Ω / inch 2 , the compression ratio is 50%.

6. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: The basis weight of the release paper is 105-115 g / m 2 , the release paper has a square structure.

7. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: The thickness of the upper protective film is 65-85 μm.

8. The anti-sticking and anti-falling conductive foam for computer case according to claim 1, characterized in that: The thickness of the lower protective film is 85-95 μm.

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