CN218041982U

CN218041982U - Three-in-one release film for FPC (flexible printed circuit) soft and hard board pressure transmission

Info

Publication number: CN218041982U
Application number: CN202221676417.6U
Authority: CN
Inventors: 陈敬师; 杨培建
Original assignee: Guangdong Membrane New Material Technology Huangshi Co ltd
Current assignee: Guangdong Membrane New Material Technology Huangshi Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-12-13
Anticipated expiration: 2032-07-01

Abstract

The utility model belongs to the technical field of from type membrane technique and specifically relates to a FPC soft and hard panel is passed pressure and is used trinity from type membrane, including the sandwich layer, two double-sided tape layers, upper surface from the type layer, lower surface from type layer and two FPC soft and hard combination sheet layers, two double-sided tape layers set up upper surface and the lower surface at the sandwich layer respectively, upper surface from the type layer sets up the upper surface at the sandwich layer through double-sided tape layer, lower surface from the type layer sets up the lower surface at the sandwich layer through double-sided tape layer, one of them FPC soft and hard combination sheet layer sets up on the upper surface from type layer upper surface, another FPC soft and hard combination sheet layer sets up on the lower surface from type layer lower surface. This FPC soft and hard panel passes pressure with trinity from type membrane passes through the setting of upper surface from type layer, lower surface from type layer, and upper surface from type layer and lower surface from type layer are high temperature resistant, make its temperature be higher than 220 ℃ the condition that ageing and garrulous membrane can not appear.

Description

Three-in-one release film for pressure transmission of FPC (flexible printed circuit) soft and hard panel

Technical Field

The utility model relates to a from type membrane technical field, especially relate to a FPC soft and hard knot board passes pressure with trinity from type membrane.

Background

The soft printed circuit board and the hard printed circuit board are combined by pressing of a pressing machine in the process of combining the soft printed circuit board and the hard printed circuit board; in the pressing process, as the prepregs combined with the board surface of the printed circuit board can flow after being melted at high temperature, some glue flowing out after the prepregs are melted at high temperature can flow to holes on the printed circuit board, some glue can flow to gold finger surfaces on the printed circuit board, some glue can flow to other places with control requirements on the printed circuit board, and the other glue can also be adhered to a steel plate used in the pressing process to cause that the steel plate can not be separated from the printed circuit board, so that the normal process flow can be completed only by carrying out subsequent treatment.

Therefore, the soft and hard printed circuit boards need to use a release film when being pressed, and the release film is used for pressing the printed circuit boards and mainly prevents prepregs from flowing to the board surfaces of the printed circuit boards from holes after being melted at high temperature, namely, the release film plays a role in glue resistance; and the release film can isolate the printed circuit board from a steel plate used in pressing, thereby avoiding the pollution of the steel plate and enabling the steel plate to be easily separated from the printed circuit board. However, the release film structure surface layer in the prior art adopts the PET film as the base material, the PET base material cannot meet higher temperature conditions, and obvious aging and film breaking can occur when the temperature is higher than 220 ℃; in addition, the bonding process between the PET film on the surface layer and the core layer is complex and has high cost; in addition, the core layer tends to flow out during the manufacturing process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the prior art that exists among the prior art and can't satisfy higher temperature condition from the type membrane structure, the temperature is higher than 220 ℃ and obviously ageing and garrulous membrane's the condition will appear, moreover, at the in-process of preparation, the shortcoming of the middle sandwich layer condition of flowing out takes place easily, and the soft or hard knot board of a FPC biography pressure is with trinity from the type membrane.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a design FPC soft or hard panel passes pressure with trinity from type membrane, includes sandwich layer, two double-sided adhesive tape layers, upper surface from type layer, lower surface from type layer and two FPC soft or hard combination sheet layer, two double-sided adhesive tape layer sets up respectively the upper surface and the lower surface of sandwich layer, upper surface from type layer passes through double-sided adhesive tape layer sets up the upper surface of sandwich layer, lower surface from type layer passes through double-sided adhesive tape layer sets up the lower surface of sandwich layer, one of them FPC soft or hard combination sheet layer sets up upper surface from type layer upper surface, another FPC soft or hard combination sheet layer sets up lower surface from type layer lower surface.

Preferably, the FPC soft and hard combined board layer comprises an inner layer, a pure glue layer, an outer layer, a waste material area, a non-glue area and a protective film, wherein the inner layer is arranged on the upper surface layer separation layer and the lower surface layer separation layer, the pure glue layer is arranged on the inner layer, the outer layer is arranged on the inner layer through the pure glue layer, the waste material area is arranged in the outer layer, the non-glue area is arranged at the waste material area, the protective film is arranged on the inner layer, and the protective film is positioned in the non-glue area.

Preferably, the side wall of the core layer is provided with a sticky side patch layer, and the upper end and the lower end of the sticky side patch layer and the two double-sided adhesive tape layers are equally divided into two parts which are respectively provided with a sealing mechanism.

Preferably, sealing mechanism includes seal groove and joint strip, the seal groove is seted up on the double-sided adhesive tape layer, joint strip fixed connection is in on the paster layer of gluing side, just joint strip card is established in the seal groove.

The utility model provides a pair of FPC soft and hard knot board passes pressure with trinity from type membrane, beneficial effect lies in:

1. the three-in-one release film for pressure transfer of the FPC soft and hard panel is characterized in that an upper surface release layer and a lower surface release layer are arranged, and the upper surface release layer and the lower surface release layer are high temperature resistant, so that aging and film breaking can be avoided when the temperature is higher than 220 ℃; through the setting that adopts the temperature resistant not less than 220 ℃ double-sided adhesive tape layer, not only can realize bonding between sandwich layer, upper surface separation layer, the lower surface separation layer three together fixed, realized trinity from the type membrane, moreover, equally can be applicable to the environment that is higher than 220 ℃.

2. This FPC soft and hard knot board passes pressure to pass through the setting of gluing the SMD layer of side, seal groove and joint strip from the type membrane to can seal up the sandwich layer completely, and then can guarantee effectively that this trinity is from the in-process of type membrane in the preparation, middle sandwich layer can not flow, can make trinity after the shaping higher, the degree of bonding more firm from the roughness of type membrane.

Drawings

Fig. 1 is the utility model provides a FPC soft and hard knot board passes pressure with trinity from the structural schematic diagram of type membrane.

Fig. 2 is a schematic structural view of the FPC rigid-flex board layer in fig. 1.

Fig. 3 is an enlarged schematic view of the structure of the part a in fig. 1.

In the figure: the flexible printed circuit board comprises a core layer 1, a double-sided adhesive tape layer 2, an upper surface delamination layer 3, a lower surface delamination layer 4, an FPC soft and hard combination board layer 5, an inner layer 51, a pure adhesive layer 52, an outer layer 53, a waste material area 54, a glue-free area 55, a protection film 56, a glue side patch layer 6, a sealing groove 7 and a sealing adhesive tape 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-3, a three-in-one release film for pressure transmission of FPC soft and hard board, including sandwich layer 1, two double-sided adhesive tape layers 2, upper surface separation layer 3, lower surface separation layer 4 and two FPC soft and hard combination sheet layers 5, two double-sided adhesive tape layers 2 set up the upper surface and the lower surface at sandwich layer 1 respectively, upper surface separation layer 3 sets up the upper surface at sandwich layer 1 through double-sided adhesive tape layer 2, lower surface separation layer 4 sets up the lower surface at sandwich layer 1 through double-sided adhesive tape layer 2, one of them FPC soft and hard combination sheet layer 5 sets up at the upper surface of upper surface separation layer 3, another FPC soft and hard combination sheet layer 5 sets up and separates the 4 lower surfaces at the lower surface of type layer.

Through the arrangement of the upper surface delamination layer 3 and the lower surface delamination layer 4, the upper surface delamination layer 3 and the lower surface delamination layer 4 are high temperature resistant, so that the conditions of aging and film breaking can not occur when the temperature is higher than 220 ℃; through the setting that adopts temperature resistant not less than 220 ℃ double faced adhesive tape layer 2, not only can realize bonding between sandwich layer 1, upper surface separation layer 3, the lower surface separation layer 4 three together fixed, realized trinity from type membrane, moreover, equally can be applicable to the environment that is higher than 220 ℃.

The FPC rigid-flex board layer 5 comprises an inner layer 51, a pure glue layer 52, an outer layer 53, a waste material area 54, a glue-free area 55 and a protective film 56, wherein the inner layer 51 is arranged on the upper surface release layer 3 and the lower surface release layer 4, the pure glue layer 52 is arranged on the inner layer 51, the outer layer 53 is arranged on the inner layer 51 through the pure glue layer 52, the waste material area 54 is arranged in the outer layer 53, the glue-free area 55 is arranged at the waste material area 54, the protective film 56 is arranged on the inner layer 51, and the protective film 56 is positioned in the glue-free area 55.

Example 2

Referring to fig. 1 and 3, as the utility model discloses a another preferred embodiment, the difference with embodiment 1 lies in, be provided with the SMD layer of sticky side 6 on the lateral wall of sandwich layer 1, and equally divide between the SMD layer of sticky side 6 upper end and lower extreme and two double-sided adhesive tape layer 2 and do not be provided with sealing mechanism, sealing mechanism includes seal groove 7 and joint strip 8, seal groove 7 is seted up on double-sided adhesive tape layer 2, joint strip 8 fixed connection is on the SMD layer of sticky side 6, and joint strip 8 card is established in seal groove 7, through the SMD layer of sticky side 6, the setting of seal groove 7 and joint strip 8, thereby can seal up sandwich layer 1 completely, and then can guarantee effectively at the in-process of this trinity release film of preparation, middle sandwich layer 1 can not flow, can make the roughness of the trinity after the shaping higher, the bonding degree is more firm.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a FPC soft or hard board is passed pressure and is used trinity from type membrane, its characterized in that, includes sandwich layer (1), two double faced adhesive tape layer (2), upper surface from type layer (3), lower surface from type layer (4) and two FPC soft or hard combination sheet layer (5), two double faced adhesive tape layer (2) set up respectively the upper surface and the lower surface of sandwich layer (1), upper surface from type layer (3) pass through double faced adhesive tape layer (2) set up the upper surface of sandwich layer (1), lower surface from type layer (4) pass through double faced adhesive tape layer (2) set up the lower surface of sandwich layer (1), one of them FPC soft or hard combination sheet layer (5) set up upper surface from type layer (3), another FPC soft or hard combination sheet layer (5) set up layer from type layer (4) lower surface down.

2. The three-in-one release film for pressure transmission of the FPC rigid-flexible board as claimed in claim 1, wherein the FPC rigid-flexible board layer (5) comprises an inner layer (51), a pure adhesive layer (52), an outer layer (53), a waste material area (54), a non-adhesive area (55) and a protection film (56), the inner layer (51) is disposed on the upper surface release layer (3) and the lower surface release layer (4), the pure adhesive layer (52) is disposed on the inner layer (51), the outer layer (53) is disposed on the inner layer (51) through the pure adhesive layer (52), the waste material area (54) is disposed in the outer layer (53), the non-adhesive area (55) is disposed at the waste material area (54), the protection film (56) is disposed on the inner layer (51), and the protection film (56) is disposed in the non-adhesive area (55).

3. The three-in-one release film for pressure transmission of the FPC soft and hard panel according to claim 1, wherein an adhesive side patch layer (6) is disposed on the sidewall of the core layer (1), and sealing mechanisms are disposed between the upper end and the lower end of the adhesive side patch layer (6) and the two double-sided adhesive tape layers (2).

4. The three-in-one release film for pressure transmission of the FPC as claimed in claim 3, wherein the sealing mechanism comprises a sealing groove (7) and a sealing rubber strip (8), the sealing groove (7) is disposed on the double-sided tape layer (2), the sealing rubber strip (8) is fixedly connected to the adhesive-side patch layer (6), and the sealing rubber strip (8) is clamped in the sealing groove (7).