A method for manufacturing a small-sized sandwiched multi-layer film product

Abstract

The application discloses a manufacturing method of a small-size sandwich multi-layer film product, which comprises the following steps: firstly, punching a through hole and a folding line connected by a breakpoint on a film to be processed at a first punching station; then, covering a mesh at a mesh covering station; then, punching a length-direction cut edge at a second punching station; then, punching a width-direction cut edge at a third punching station; then, folding the film to be processed along the folding line at a folding station, so that a foam glue is attached to the mesh; finally, removing a bottom protection film of the film to be processed at a combination station, and transferring the punched film assembly to a supporting release film to obtain the required film product. By using the manufacturing method, the film can be more easily aligned and operated, the influence of a quick glue layer back-sticking can be reduced, and the product yield is improved.

Description

Technical Field

[0001] This invention relates to the field of membrane material punching technology, and specifically to a method for manufacturing small-sized sandwich multilayer membrane products. Background Technology

[0002] Membrane materials used for sealing microphone sound holes generally consist of, from top to bottom, a tear-off film, adhesive foam, mesh, more adhesive foam, and a release liner. In use, the top tear-off film is peeled off, the second layer of adhesive foam is applied to the corresponding microphone position, the bottom release liner is peeled off, and finally, the corresponding microphone components are applied to the fourth layer of adhesive foam. The mesh is located between the two layers of adhesive foam. In existing technology, this adhesive foam assembly is manufactured by directly punching out the outer frame. Specifically, during manufacturing, round holes are punched simultaneously in the tear-off film and the second layer of adhesive foam, and also in the fourth layer of adhesive foam. Mesh is then placed over the fourth layer of adhesive foam, followed by the second layer of adhesive foam and the tear-off film. Then, punching is performed from the fourth layer of adhesive foam towards the tear-off film, punching the second layer of adhesive foam, mesh, and fourth layer of adhesive foam into squares, while simultaneously punching the tear-off film into a shape with a protruding tear-off portion. The problem with this punching method is that it is easy to misalign the second layer of foam adhesive and the tear-off film when covering the mesh. Furthermore, when punching from the fourth layer of foam adhesive toward the tear-off film, due to the small product size, multiple film layers, and double-layered foam adhesive, the adhesive layer re-adhedes quickly, which makes it easy to carry away the product when the outer frame waste is discharged, resulting in a low product yield. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and provide a method for manufacturing small-sized sandwich multilayer film products, which can be more easily aligned and reduce the impact of rapid adhesive re-adhesion, thereby improving product yield.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Technical Solution 1: A method for manufacturing a small-sized sandwich-type multilayer membrane product, wherein the membrane product comprises, from top to bottom, a tear-away film, a first foam adhesive, a mesh, a second foam adhesive, and a support release film, wherein the tear-away film, the first foam adhesive, and the second foam adhesive have through holes running vertically through the layers, the first foam adhesive, the mesh, and the second foam adhesive are rectangular, and the tear-away film includes a covering portion with the same shape as the first foam adhesive, the mesh, and the second foam adhesive, and a tear-away portion extending from the covering portion and being rectangular in shape, characterized by the following steps: S10: The pre-made membrane material to be processed is first punched and waste removed at a punching station, forming through holes on the tear-away film, the first foam adhesive, and the second foam adhesive of the membrane material to be processed, and the membrane material to be processed... A fold line is formed at the midpoint of the width direction, connecting the breakpoints; S20: At the covering station, the mesh is covered to the second foam adhesive; S30: At the second punching station, a second punching and waste removal is performed, forming cut edges along the length direction of the film to be treated on the tear-off film, the first foam adhesive, the mesh, and the second foam adhesive; S40: At the third punching station, a third punching and waste removal is performed, forming cut edges along the width direction of the film to be treated on the tear-off film, the first foam adhesive, the mesh, and the second foam adhesive; S50: At the folding station, the film to be treated is folded along the fold line, so that the first foam adhesive adheres to the mesh; S60: At the assembly station, the bottom protective film of the film to be treated is removed, and the tear-off film, the first foam adhesive, the mesh, and the second foam adhesive are transferred to the bearing... The membrane is formed to obtain the membrane material product; wherein, in S10, the bottom layer of the pre-made membrane material to be processed is a bottom protective film, and it is divided into an upper punching section and a lower punching section along the width direction. The upper punching section and the lower punching section are connected by a first punching waste removal to form the fold line; the upper punching section is arranged with two upper punching film layers along the width direction. The upper punching film layers are arranged from top to bottom as a fog film, foam adhesive and hand-tear release film, wherein the foam adhesive and hand-tear release film correspond to the first foam adhesive and hand-tear film of the membrane material product; the lower punching section is arranged with two lower punching film layers along the width direction. The lower punching film layers are arranged from top to bottom as a fog film, foam adhesive and process release film, wherein the foam adhesive corresponds to the second foam adhesive of the membrane material product; in the first During the second punching and waste removal, through holes are formed for the fog film, foam adhesive, and hand-tear release film of the upper punching film layer, and through holes are also formed for the fog film, foam adhesive, and process release film of the lower punching film layer. In S20, the fog film on the two lower punching film layers of the film material to be treated is removed, and the mesh is covered to the lower punching part, with the coverage area of ​​the mesh not exceeding the fold line. In S30, during the second punching and waste removal, the cutting edge of the upper punching part along the length direction includes, in sequence along the width direction, a first cutting edge, a second cutting edge, a third cutting edge, a fourth cutting edge, a fifth cutting edge, and a sixth cutting edge, and the cutting edge of the lower punching part along the length direction includes, in sequence along the width direction, a seventh cutting edge, an eighth cutting edge, a ninth cutting edge, and a tenth cutting edge.The first and sixth cutting edges punch the frosted film, foam adhesive, and hand-tear release film at the outer edge of the hand-tearable portion of the hand-tearable film in the width direction; the second and fifth cutting edges punch the frosted film and foam adhesive at the edge of the first foam adhesive near the hand-tearable portion of the hand-tearable film in the width direction; the third and fourth cutting edges punch the frosted film, foam adhesive, and hand-tear release film at the inner edge of the covering portion of the hand-tearable film in the width direction; the seventh and tenth cutting edges punch the mesh, foam adhesive, and process release film at the edge of the second foam adhesive away from the hand-tearable portion of the hand-tearable film in the width direction; the eighth and ninth cutting edges punch the mesh, foam adhesive, and process release film at the edge of the second foam adhesive away from the hand-tearable portion of the hand-tearable film. The adhesive is located near the tear-off portion of the hand-tearable film at its width-direction edge; in S40, during the third punching and waste removal, the upper punching portion includes a 10th and 12th cutting edge along its width-direction and a 13th and 14th cutting edge along its length-direction, respectively; the 10th and 12th cutting edges punch the frosted film, foam adhesive, hand-tearable release film, and bottom protective film, respectively, corresponding to the two sides of the hand-tearable film's length-direction edge; the 13th and 14th cutting edges punch the frosted film, foam adhesive, process release film, and bottom protective film, respectively, corresponding to the two sides of the hand-tearable film's covering portion's length-direction edge.

[0006] Technical Solution 2 based on Technical Solution 1: In S10, corresponding to the position of the through hole formed by punching on the membrane material to be treated in the length direction of the membrane material to be treated, guide post holes are also punched at the edge position in the width direction of the membrane material to be treated; the guide post holes are used to position the membrane material to be treated by inserting the vertically set guide post on the punching equipment into the guide post holes when punching and waste removal is carried out in the second punching station and the third punching station.

[0007] Technical Solution 3 based on Technical Solution 2: In S10, during each punching and waste removal, the guide post on the punching equipment is inserted into the guide post hole formed during the previous punching and waste removal for positioning, so that the distance between adjacent guide post holes on the membrane material to be treated is consistent in the length direction.

[0008] Technical Solution 4 based on Technical Solution 3: In S10, after each punching and waste removal, four through holes arranged along the width direction and aligned in the length direction are formed on the membrane material to be processed, and four guide pin holes aligned in the length direction and arranged along the width direction with the through holes, wherein two guide pin holes are located at the edge position of the upper punching part in the width direction, and the other two guide pin holes are located at the edge position of the lower punching part in the width direction.

[0009] Technical Solution 5 based on Technical Solution 4: Before the second punching and waste removal in S30, replace the old fog film on the upper punching section of the membrane material to be treated with a new fog film.

[0010] Technical Solution Six based on Technical Solution Five: In S60, the two parts of the bottom protective film in the membrane material to be processed, corresponding to the upper and lower punched parts, are separated along the fold line.

[0011] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0012] The punching method for small-sized sandwich multilayer membrane products provided by this invention, compared with the existing method of directly punching the outer frame of the product, adopts the means of dividing the product into two parts for step-by-step punching and pre-setting fold lines, which makes it easier to align the foam adhesive when it covers the mesh, and can reduce the impact of rapid adhesive re-adhesion, thereby improving the product yield.

[0013] The pre-fabricated membrane material is divided into an upper punching section and a lower punching section by fold lines. This facilitates the separate punching of the hand-tearable film, the first foam adhesive, the second foam adhesive, and the mesh. The two parts are then combined by fold lines. The fold lines ensure that the two parts are more easily aligned during folding. Furthermore, since the fold lines and through holes are formed simultaneously during the first punching and waste removal, the positions of the fold lines and through holes are strictly corresponding, which further improves the accuracy of alignment of the two parts after folding.

[0014] Subsequently, the membrane material to be processed is punched and waste removed in both the length and width directions. Because the upper punching section has two corresponding upper punching membrane layers and the lower punching section has two corresponding lower punching membrane layers, the portion between the two upper and two lower punching membrane layers can be more easily removed during length-direction trimming. Then, width-direction trimming is performed, resulting in a smaller waste removal area after punching. Compared to existing technologies, where punching starts from the fourth layer of foam adhesive towards the tear-off film, the small product size, multiple membrane layers, and double-layer foam adhesive lead to rapid adhesive re-adhesion, causing product to be easily carried away when removing outer frame waste. This method, through a reasonable punching sequence and position arrangement, reduces the impact of adhesive re-adhesion and avoids product being carried away during waste removal.

[0015] Furthermore, during the first punching and waste removal process, guide post holes are punched into the membrane material to be processed. By inserting vertically arranged guide posts on the punching equipment into these holes, the position of the membrane material to be processed can be precisely limited during the punching and waste removal operations at the second and third punching stations, preventing displacement. Moreover, during each punching and waste removal process, the guide posts on the punching equipment are inserted into the guide post holes formed in the previous punching and waste removal, simultaneously positioning the membrane material to be processed. This ensures that the distance between adjacent guide post holes on the membrane material to be processed remains consistent along the length direction. This setup guarantees accurate alignment of the cut edges along the width direction during the subsequent third punching and waste removal process. Simultaneously, four guide post holes are provided for each group of through holes or products. These four guide post holes are punched simultaneously with the four through holes, thereby strictly controlling the jump distance between two adjacent products. Furthermore, since the upper and lower punching sections simultaneously form guide post holes, it further ensures that the punched components are aligned when folded.

[0016] In addition, timely replacement of the foam film can reduce the impact of adhesive re-adhesion. The new foam film can maintain good isolation performance, preventing excessive adhesion of the foam adhesive during the die-cutting process, thereby ensuring the smooth progress of subsequent die-cutting operations.

[0017] The fold lines formed by punching can be easily separated due to the structure of the discontinuous connection, which facilitates the subsequent transfer of the components to the carrier release film. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The structure of the membrane material product mentioned in the background art of this invention;

[0020] Figure 2 This is an array diagram of the first punching waste removal in the punching method according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the cross-section for the first punching and waste removal process;

[0022] Figure 4 This is an array diagram of the second punching waste removal in the punching method according to an embodiment of the present invention;

[0023] Figure 5 for Figure 4 A schematic diagram of the cross-section for the second punching and waste removal process;

[0024] Figure 6 This is an array diagram of the third punching waste removal in the punching method according to an embodiment of the present invention;

[0025] Figure 7 for Figure 6 A schematic diagram of the cross-section of the third punching and waste removal process.

[0026] Explanation of key figure labels:

[0027] 1. Hand-tearable film; 2. First foam adhesive; 3. Mesh; 4. Second foam adhesive; 5. Supporting release film; 6. Through hole; 7. Covering part; 8. Hand-tearable part; 9. Folding line; 10. Bottom protective film; 11. Upper punching part; 12. Lower punching part; 13. Upper punching film layer; 14. Lower punching film layer; 15. Foam adhesive; 16. Hand-tearable release film; 17. Process release film; 18. Guide post hole; 19.

[0028] First cutting edge 21; Second cutting edge 22; Third cutting edge 23; Fourth cutting edge 24; Fifth cutting edge 25; Sixth cutting edge 26; Seventh cutting edge 27; Eighth cutting edge 28; Ninth cutting edge 29; Tenth cutting edge 210; Eleventh cutting edge 211; Twelfth cutting edge 212; Thirteenth cutting edge 213; Fourteenth cutting edge 214. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0031] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0032] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0033] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0034] This invention relates to a method for manufacturing small-sized sandwich multilayer membrane products, as described in the following embodiments. Figure 1 The membrane material product consists of, from top to bottom, a tear-off film 1, a first foam adhesive 2, a mesh 3, a second foam adhesive 4, and a support release film 5. The tear-off film 1, the first foam adhesive 2, and the second foam adhesive 4 are provided with through holes 6 that run vertically through the membrane. The first foam adhesive 2, the mesh 3, and the second foam adhesive 4 are rectangular. The tear-off film 1 includes a covering portion 7 that has the same shape as the first foam adhesive 2, the mesh 3, and the second foam adhesive 4, and a tear-off portion 8 that extends from the covering portion 7 and is rectangular.

[0035] In this embodiment, the covering portion 7 of the first foam adhesive 2, mesh 3, second foam adhesive 4, and tear-off film 1 is approximately square, with rounded corners. The tear-off portion 8 of the tear-off film 1 is approximately rectangular, with rounded corners.

[0036] The manufacturing method involved in this embodiment of the invention specifically includes the following steps:

[0037] S10: The pre-made membrane material to be processed is punched and waste is removed at the first punching station. Through holes 6 are formed on the hand-tear film 1, the first foam adhesive 2, and the second foam adhesive 4 of the membrane material to be processed, and a fold line 9 with a breakpoint connection is formed at the middle position of the width direction of the membrane material to be processed.

[0038] S20: Cover the mesh 3 with the second foam adhesive 4 at the covering station;

[0039] S30: A second punching and waste removal process is performed at the second punching station, forming a cut edge along the length of the film material to be processed on the hand-tearable film 1, the first foam adhesive 2, the mesh 3, and the second foam adhesive 4.

[0040] S40: The third punching and waste removal is carried out at the three punching station, and a cut edge is formed along the width direction of the film material to be processed on the hand-tear film 1, the first foam adhesive 2, the mesh 3, and the second foam adhesive 4.

[0041] S50: At the folding station, the film material to be processed is folded along the folding line 9 so that the first foam adhesive 2 is attached to the mesh 3;

[0042] S60: At the assembly station, remove the bottom protective film 10 of the membrane material to be processed, and transfer the hand-tear film 1, the first foam adhesive 2, the mesh 3, and the second foam adhesive 4 to the carrier release film 5 to obtain the membrane material product.

[0043] Reference Figures 2-7 It sequentially shows the punching arrays of the first punching, the second punching, and the third punching in the manufacturing method involved in the embodiments of the present invention, as well as the corresponding punching depth.

[0044] First refer to Figure 2 and Figure 3 In step S10, the bottom layer of the pre-fabricated membrane material to be processed is a bottom protective film 10, which is divided into an upper punching section 11 and a lower punching section 12 along the width direction. The fold line 9 is formed between the upper punching section 11 and the lower punching section 12 through the first punching waste removal. The upper punching section 11 has two upper punching film layers 13 arranged along the width direction. The upper punching film layers 13 are, from top to bottom, a fog film 15, a foam adhesive 16, and a hand-tear release film 17. The foam adhesive 16 and the hand-tear release film 17 correspond to the first foam of the membrane material product. Adhesive 2 and tear-off film 1; the lower punching section 12 is provided with two lower punching film layers 14 along the width direction, the lower punching film layers 14 being, from top to bottom, a fog film 15, a foam adhesive 16, and a process release film 18, wherein the foam adhesive 16 corresponds to the second foam adhesive 4 of the film material product; during the first punching and waste removal, the fog film 15, foam adhesive 16, and tear-off release film 17 of the upper punching film layer 13 are punched and waste removed to form through holes 6, and the fog film 15, foam adhesive 16, and process release film 18 of the lower punching film layer 14 are punched and waste removed to form through holes 6.

[0045] Furthermore, in S10, corresponding to the position of the through hole 6 formed by punching on the membrane material to be treated in the length direction of the membrane material, guide post holes 19 are also punched at the edge position in the width direction of the membrane material to be treated. The guide post holes 19 are used to position the membrane material to be treated by inserting the vertically set guide posts on the punching equipment into the guide post holes 19 during the second and third punching waste removal processes. Simultaneously, in S10, during each punching waste removal process, the guide posts on the punching equipment are inserted into the guide post holes formed in the previous punching waste removal process for positioning, ensuring that the distance between adjacent guide post holes on the membrane material to be treated is consistent in the length direction. This arrangement ensures accurate alignment of the cut edges along the width direction in the subsequent third punching waste removal process. Specifically, in S10, after each punching and waste removal, four through holes 6 arranged along the width direction and aligned in the length direction are formed on the membrane material to be processed, and four guide holes 19 arranged along the width direction and aligned with the through holes 6 in the length direction. Two guide holes 19 are located at the edge of the upper punching section 11 in the width direction, and the other two guide holes 19 are located at the edge of the lower punching section 12 in the width direction.

[0046] In step S20, the fog film 15 on the two lower punched film layers 14 of the lower punched portion 12 of the film material to be treated is removed, and the mesh 3 is covered to the lower punched portion 12, with the coverage area of ​​the mesh 3 not exceeding the fold line 9.

[0047] Next refer to Figure 4 and Figure 5 In step S30, during the second punching and waste removal, the upper punching portion 11, along its length, includes a first cutting edge 21, a second cutting edge 22, a third cutting edge 23, a fourth cutting edge 24, a fifth cutting edge 25, and a sixth cutting edge 26 in sequence along its width. The lower punching portion 12, along its length, includes a seventh cutting edge 27, an eighth cutting edge 28, a ninth cutting edge 29, and a tenth cutting edge 210 in sequence along its width. The first cutting edge 21 and the sixth cutting edge 26 punch the mist film 15, the foam adhesive 16, and the hand-tear release film 17, corresponding to the outer edge of the hand-tear portion 8 of the hand-tear film 1 in the width direction. The second cutting edge 22 and the fifth cutting edge 25 punch the mist film 15. Foam adhesive 16 corresponds to the edge of the first foam adhesive 2 near the tear-off portion 8 of the hand-tearable film 1 in the width direction. The third cutting edge 23 and the fourth cutting edge 24 punch the fog film 15, foam adhesive 16, and hand-tearable release film 17, which correspond to the inner edge of the covering portion 7 of the hand-tearable film 1 in the width direction. The seventh cutting edge 27 and the tenth cutting edge 210 punch the mesh 3, foam adhesive 16, and process release film 18, which correspond to the edge of the second foam adhesive 4 away from the tear-off portion 8 of the hand-tearable film 1 in the width direction. The eighth cutting edge 28 and the ninth cutting edge 29 punch the mesh 3, foam adhesive 16, and process release film 18, which correspond to the edge of the second foam adhesive 4 near the tear-off portion 8 of the hand-tearable film 1 in the width direction. Before the second punching and waste removal in S30, the old fog film 15 on the upper punching portion 11 of the film material to be treated is replaced with a new fog film 15. Timely replacement of the new fog film 15 can reduce the impact of adhesive layer re-adhesion. The new fog film 15 can maintain good isolation performance and prevent the foam adhesive 16 from sticking too much during the punching process, thus ensuring the smooth progress of subsequent punching operations.

[0048] Next refer to Figure 6 and Figure 7 In S40, during the third punching and waste removal, the upper punching part 11 includes a 10th cutting edge 211 and a 12th cutting edge 212 along the width direction and along the length direction, and the lower punching part 12 includes a 13th cutting edge 213 and a 14th cutting edge 214 along the width direction and along the length direction, respectively. The 10th cutting edge 211 and the 12th cutting edge 212 punch the mist film 15, foam adhesive 16, hand-tear release film 17 and bottom protective film 10, respectively, corresponding to the two sides of the hand-tear film 1 along the length direction. The 13th cutting edge 213 and the 14th cutting edge 214 punch the mist film 15, foam adhesive 16, process release film 18 and bottom protective film 10, respectively, corresponding to the two sides of the covering part 7 of the hand-tear film 1 along the length direction.

[0049] In S50, a fixture of a corresponding shape can be set so that the guide post of the fixture is inserted into the guide post hole 19 of the bottom protective film 10. Then, the fixture is folded so that the film material to be processed is folded along the folding line 9, and the component obtained after punching by the upper punching part 11 and the component obtained after punching by the lower punching part 12 are aligned and bonded together.

[0050] In step S60, the two parts of the bottom protective film 10 corresponding to the upper punched portion 11 and the lower punched portion 12 in the membrane material to be processed can be separated along the fold line 9. Then, the bottom protective film 10 adhered to the lower punched portion 12 is first removed, and the assembled component is transferred to the support release film 5. Finally, the bottom protective film 10 adhered to the upper punched portion 11 is removed, thus obtaining the desired membrane material product. The fold line 9 formed by the punching, due to its discontinuous connection structure, allows for easy separation, facilitating the subsequent transfer of the component to the support release film 5.

[0051] The punching method for small-sized sandwich multilayer membrane products provided by this invention, compared with the existing method of directly punching the outer frame of the product, adopts the means of dividing the product into two parts for step-by-step punching and pre-setting fold lines 9, which makes it easier to align the foam adhesive 16 when it covers the mesh 3, and can reduce the impact of rapid adhesive re-adhesion, thereby improving the product yield.

[0052] The pre-made membrane material to be processed is divided into an upper punching section 11 and a lower punching section 12 by a folding line 9, which facilitates the punching of the hand-tearable film 1, the first foam adhesive 2, the second foam adhesive 4, and the mesh 3 respectively. Then, the two parts are combined by the folding line 9. The setting of the folding line 9 can ensure that the two parts are more easily aligned during folding. Since the folding line 9 and the through hole 6 are formed at the same time during the first punching and waste removal, the position of the folding line 9 and the position of the through hole 6 are strictly corresponding, which further improves the accuracy of the alignment of the two parts after folding.

[0053] Subsequently, the membrane material to be processed is punched and waste is removed in both the length and width directions. Since the upper punching section 11 has two corresponding upper punching membrane layers 13, and the lower punching section 12 has two corresponding lower punching membrane layers 14, it is easier to remove the portion between the two upper punching membrane layers 13 and the two lower punching membrane layers 14 when cutting along the length direction. Then, cutting along the width direction further reduces the waste removal area. Compared to the prior art, where punching is performed from the fourth layer of foam adhesive 16 towards the tear-away film 1, the small product size, multiple membrane layers, and double-layer foam adhesive 16 cause rapid adhesive re-adhesion, leading to the problem of product being easily carried away when removing the outer frame waste. This method, through a reasonable punching sequence and position arrangement, reduces the impact of adhesive re-adhesion and avoids the situation where product is carried away when removing waste.

[0054] Furthermore, during the first punching and waste removal process, guide post holes 19 are punched into the membrane material to be processed. By inserting the vertically arranged guide posts on the punching equipment into the guide post holes 19, the position of the membrane material to be processed can be precisely limited during the punching and waste removal operations at the second and third punching stations, preventing displacement. Moreover, four guide post holes 19 are provided for each group of through holes 6 or product. These four guide post holes 19 are punched simultaneously with the four through holes 6, thereby strictly controlling the jump distance between two adjacent products. Furthermore, since the upper punching section 11 and the lower punching section 12 simultaneously form guide post holes 19, it further ensures that the punched components are aligned when folded.

[0055] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A method for manufacturing a small-sized sandwich-type multilayer membrane product, wherein the membrane product comprises, from top to bottom, a tear-away film (1), a first foam adhesive (2), a mesh (3), a second foam adhesive (4), and a support release film (5), wherein the tear-away film (1), the first foam adhesive (2), and the second foam adhesive (4) are provided with through holes (6) extending vertically, the first foam adhesive (2), the mesh (3), and the second foam adhesive (4) are rectangular, and the tear-away film (1) includes a covering portion (7) with the same shape as the first foam adhesive (2), the mesh (3), and the second foam adhesive (4) and a tear-away portion (8) extending from the covering portion (7) and being rectangular, characterized in that, Includes the following steps: S10: The prefabricated membrane material to be treated is punched and waste is removed at the first punching station. Through holes (6) are formed on the hand-tear film (1), the first foam adhesive (2), and the second foam adhesive (4) of the membrane material to be treated, and a fold line (9) with a breakpoint connection is formed at the middle position of the width direction of the membrane material to be treated. S20: Cover the mesh (3) with the second foam adhesive (4) at the covering station; S30: The second punching and waste removal is carried out at the second punching station, and a cut edge is formed along the length direction of the film material to be processed on the hand-tearable film (1), the first foam adhesive (2), the mesh (3), and the second foam adhesive (4); S40: The third punching and waste removal is carried out at the three punching station, and a cutting edge is formed along the width direction of the film material to be processed on the hand-tear film (1), the first foam adhesive (2), the mesh (3), and the second foam adhesive (4). S50: At the folding station, the film material to be processed is folded along the folding line (9) so that the first foam adhesive (2) is attached to the mesh (3); S60: Remove the bottom protective film (10) of the membrane material to be processed at the assembly station, and transfer the hand-tear film (1), the first foam adhesive (2), the mesh (3), and the second foam adhesive (4) to the carrier release film (5) to obtain the membrane material product; in, In S10, the bottom layer of the pre-made membrane material to be processed is a bottom protective film (10), which is divided into an upper punching section (11) and a lower punching section (12) along the width direction. The upper punching section (11) and the lower punching section (12) form the fold line (9) through the first punching waste removal. The upper punching section (11) has two upper punching film layers (13) arranged along the width direction. The upper punching film layers (13) are, from top to bottom, a fog film (15), a foam adhesive (16), and a hand-tear release film (17). The foam adhesive (16) and the hand-tear release film (17) correspond to the first foam adhesive (2) and the hand-tear release film of the membrane material product. Tearing film (1); The lower punching part (12) is provided with two lower punching film layers (14) along the width direction. The lower punching film layers (14) are, from top to bottom, a fog film (15), a foam adhesive (16) and a process release film (18). The foam adhesive (16) corresponds to the second foam adhesive (4) of the film material product. During the first punching waste removal, the fog film (15), foam adhesive (16) and hand-tearable release film (17) of the upper punching film layer (13) are punched to form through holes (6), and the fog film (15), foam adhesive (16) and process release film (18) of the lower punching film layer (14) are punched to form through holes (6). In step S20, the fog film (15) on the two lower punched film layers (14) of the lower punched portion (12) of the film material to be treated is removed. The mesh (3) is then placed over the lower punched section (12), and the coverage area of ​​the mesh (3) does not exceed the fold line (9); In S30, during the second punching and waste removal, the upper punching part (11) includes, along its length, a first cutting edge (21), a second cutting edge (22), a third cutting edge (23), a fourth cutting edge (24), a fifth cutting edge (25), and a sixth cutting edge (26), and the lower punching part (12) includes, along its length, a seventh cutting edge (27), an eighth cutting edge (28), a ninth cutting edge (29), and a tenth cutting edge (210), and the sixth cutting edge (26) includes, along its length, a seventh cutting edge (27), an eighth cutting edge (28), a ninth cutting edge (29), and a tenth cutting edge (210), and the first cutting edge (21) and the sixth cutting edge (26) punch the mist film (15), foam adhesive (16), and hand-tear release film (17) at the outer edge of the hand-tear part (8) of the hand-tear film (1) in the width direction. The second cutting edge (22) and the fifth cutting edge (25) punch the mist film (15), foam adhesive (16), and hand-tear release film (17). 16) The tear-off portion (8) of the first foam adhesive (2) near the tear-off film (1) is at the edge in the width direction. The third cutting edge (23) and the fourth cutting edge (24) punch the fog film (15), foam adhesive (16) and tear-off release film (17) at the inner edge in the width direction of the covering portion (7) of the tear-off film (1). The seventh cutting edge (27) and the tenth cutting edge (210) punch the mesh (3), foam adhesive (16) and process release film (18) at the edge in the width direction of the tear-off portion (8) of the second foam adhesive (4) away from the tear-off film (1). The eighth cutting edge (28) and the ninth cutting edge (29) punch the mesh (3), foam adhesive (16) and process release film (18) at the edge in the width direction of the tear-off portion (8) of the second foam adhesive (4) near the tear-off film (1). In S40, during the third punching and waste removal, the upper punching part (11) includes a 10th cutting edge (211) and a 12th cutting edge (212) along the width direction and along the length direction, and the lower punching part (12) includes a 13th cutting edge (213) and a 14th cutting edge (214) along the width direction and along the length direction, respectively; the 10th cutting edge (211) and the 12th cutting edge (212) punch the fog film (15), foam adhesive (16), hand-tear release film (17) and bottom protective film (10) respectively, corresponding to the two sides of the hand-tear film (1) along the length direction; the 13th cutting edge (213) and the 14th cutting edge (214) punch the fog film (15), foam adhesive (16), process release film (18) and bottom protective film (10) respectively, corresponding to the two sides of the covering part (7) of the hand-tear film (1) along the length direction.

2. The method for manufacturing a small-sized sandwich multilayer membrane product as described in claim 1, characterized in that, in In S10, corresponding to the position of the through hole (6) formed by punching on the membrane material to be treated in the length direction of the membrane material to be treated, a guide post hole (19) is also punched at the edge position in the width direction of the membrane material to be treated; the guide post hole (19) is used to position the membrane material to be treated by inserting the guide post vertically set on the punching equipment into the guide post hole (19) when punching and waste removal is carried out in the second punching station and the third punching station.

3. The method for manufacturing a small-sized sandwich multilayer membrane product as described in claim 2, characterized in that, in In S10, during each punching and waste removal process, the guide post on the punching equipment is inserted into the guide post hole formed during the previous punching and waste removal for positioning, so that the distance between adjacent guide post holes on the membrane material to be treated is consistent in the length direction.

4. The method for manufacturing a small-sized sandwich multilayer membrane product as described in claim 3, characterized in that, in In S10, after each punching and waste removal, four through holes (6) arranged along the width direction and aligned in the length direction are formed on the membrane material to be processed, and four guide holes (19) aligned in the length direction and arranged along the width direction with the through holes (6). Two guide holes (19) are located at the edge of the upper punching part (11) in the width direction, and the other two guide holes (19) are located at the edge of the lower punching part (12) in the width direction.

5. The method for manufacturing a small-sized sandwich multilayer membrane product as described in claim 4, characterized in that, Before the second punching and waste removal in S30, the old fog membrane (15) of the upper punching part (11) of the membrane material to be treated is replaced with a new fog membrane (15).

6. The method for manufacturing a small-sized sandwich multilayer membrane product as described in claim 5, characterized in that, in In S60, the two parts of the bottom protective film (10) in the membrane material to be treated, corresponding to the upper punching part (11) and the lower punching part (12), are separated along the fold line (9).

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