TWI661946B - Overlapping adhesive film - Google Patents

Abstract

A repeatable adhesive film includes: a soft substrate having first and second surfaces; a first film layer adhered to the first surface of the flexible substrate; A film layer is adhered to the first surface of the flexible substrate through at least one high-temperature baking and curing process to form the overlay film.

Description

Overlapping adhesive film

The present invention relates to an adhesive film structure, in particular to a film structure used for repeated adhesive production made at least once at high temperature.

According to the knowledge, the marketable and re-adhesive membrane structure, whether used in general households or various commercial applications, its main function is to provide it for use on a variety of surfaces (such as walls, tiles, glass, etc.) ) Provide adhesive function or connect various hanging objects, etc. Among them, various adhesives are usually used as a means of bonding on various surfaces. The above-mentioned repeatable adhesive film products are often stuck when they need to be adjusted or replaced. Residual adhesive is left on the surface, which causes problems in cleaning and aesthetics. Therefore, the industry has developed a number of adhesive surfaces that can be repeatedly pasted repeatedly without causing residues. As a product that provides users with more convenient and simple operations, such as Products such as double-coated adhesive tapes, easy-to-remove tapes, and inert adhesives produced by American 3M, however, the adhesives used in most commercially available double-coated adhesive tapes or double-coated film sheets are usually used in conjunction with The effect of repeated application cannot be achieved, and it is easy to leave residual adhesive on the pasted surface, or once the adhesive is used, its adhesiveness is greatly lost. It cannot be reused repeatedly. Therefore, in addition to the problems of cleaning and aesthetics caused by the conventional repeated adhesive film, the applicable range is also quite limited.

As in the prior art, such as the repetitive adherent cloth disclosed in the Republic of China Publication Patent No. M411441, the structure is a combination of a cloth sheet layer and an elastic resin glue layer, and the cloth sheet layer can be a variety of natural fiber or man-made fiber cloth. With the elastic resin adhesive layer, it can be repeatedly applied to any position numerous times, and can be peeled off and changed at any time, which has beautiful and decorative effects. However, in the conventional technology, the cloth layer needs to be assisted with hot melt adhesive, acrylic glue or shellac to be combined with the elastic resin glue layer. The two-layer structure is not easy to combine. Different cloth materials are also different, and there are considerable restrictions on the choice. Therefore, there is still room for further development and improvement for the combination strength and structure of objects that can be pasted repeatedly.

Known in Taiwan Patent TW 200948925 "Stretchable peelable adhesive", a stretchable peelable adhesive product produced by 3M includes first and second opposite major surfaces and a pull tab, and the first major surface And at least a part of at least one of the second major surfaces is adhesive. The adhesive article has a cross-sectional area measured perpendicular to an axis defined by a tensile tearing force applied to the pull-tab during the tensile tearing process, the cross-sectional area having a defined width and Thickness ratio, and the adhesive product can have a visible light transmittance of at least about 90% and a turbidity of not more than 5%. The former case must retain the area of a pull-tab, and the adhesive effect is used for general double-sided adhesive Cannot be used again and again.

Another example is a double-sided adhesive film described in the conventional US patent US 20070020474. The film includes a support film, a first adhesive layer system laminated on one side of the support film, and a second adhesive layer system laminated on The support film On the other side, the hardened glass transition temperature of the first adhesive layer and the second adhesive layer is less than or equal to 100 ° C. Therefore, the first adhesive layer and the second adhesive layer are in a gel state, and it is not easy to peel off after being pasted, and does not have the characteristics of repeated adhesion. Another disadvantage is that the adhesive layer is in a gel state and the adhesive layer The glass transition temperature must be less than or equal to 100 ° C, that is, when the adhesive layer exceeds 100 ° C in a high temperature state, the adhesive layer immediately solidifies to harden without adhesiveness.

In view of the above-mentioned shortcomings, the inventor felt that it had not been perfected, and exhausted his mind to research and overcome it carefully. Based on his accumulated experience in the industry for many years, he developed a repeatable adhesive film, using simple materials and structures. The design can make the present invention have the effect of repeated application.

The main object of the present invention is to design a repeatable adhesive film, which is characterized by using a first film layer to adhere to a first surface of the flexible substrate through at least one high-temperature baking and curing process, and using the first substrate. The film layer achieves the effect of repeated application.

Another main object of the present invention is to design a repeatable adhesive film sheet, in which a plurality of micro-bubble structures are generated on the surface of the first film layer after the first film layer is subjected to at least one high-temperature baking and curing process. The micro-bubble structure has the function of a vacuum chuck. When the micro-bubble structure is adhered to other surfaces, the surface tension of the re-adhesive film is increased, and the effect of re-adhesion is achieved.

In order to achieve the above object, the implementation technology of the present invention is as follows: The diaphragm includes: a flexible substrate having a first surface and a second surface; a first film layer, which is adhered to the first surface of the flexible substrate; and is characterized by the first film layer Adhering to the first surface of the flexible substrate through at least one high-temperature baking and curing process to form the overlapping adhesive film.

In the above-mentioned overlapping adhesive film sheet, during the high-temperature baking and curing process, the first film layer is heated to a glass transition temperature between 250 ° C and 350 ° C, and is then baked and bonded to the first substrate of the soft substrate. A surface.

In the above-mentioned overlapping adhesive film sheet, after the first film layer is subjected to a high-temperature baking and curing process, a plurality of micro-bubble structures are further formed on the surface of the first film layer.

In the above-mentioned repeated adhesive film sheet, the thickness of the first film layer is 0.01 to 0.5 cm.

In the above-mentioned overlapping adhesive film sheet, the first film layer further includes a protective layer.

In the above-mentioned repeated adhesive film sheet, further, the first surface of the flexible substrate has a plurality of pores, and the material of the flexible substrate is linen, cotton yarn, cotton, non-woven fabric, textile fiber, natural fiber, chemical fiber, nylon Or rayon.

In the above-mentioned overlapping adhesive film sheet, the first film layer material is a styrene elastic film layer (SEBS).

In the above-mentioned overlapping adhesive film sheet, the protective layer material is release paper, polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET).

In the above-mentioned overlapping adhesive film, the second surface of the flexible substrate is It further comprises an adhesive layer, which is used to adhere the second surface of the flexible substrate with the adhesive layer.

In the above-mentioned repeated adhesive film, the material of the adhesive layer is hot-melt adhesive, hot-pressed adhesive, acrylic adhesive, white adhesive, super glue epoxy resin or styrene elastic film layer (SEBS).

10‧‧‧ flexible substrate

11‧‧‧ the first surface

12‧‧‧ second surface

20‧‧‧The first film layer

21‧‧‧ microbubble structure

30‧‧‧ protective layer

40‧‧‧ Adhesive layer

50‧‧‧ hanging sentence structure

60‧‧‧Picture layer

100‧‧‧ Repeated adhesive film

200‧‧‧ Repeated adhesive film

300‧‧‧ Repeated adhesive film

FIG. 1 is an exploded view of a re-adhesive film of the first embodiment of the present invention.

FIG. 2 is a combination diagram of the first embodiment of the present invention with a laminated adhesive film.

Fig. 3 is a combination diagram of the second embodiment of the present invention in which the adhesive film is overlapped.

FIG. 4 is a bonding diagram of a third embodiment of the present invention for overlapping the adhesive film.

FIG. 5 is another combination diagram of the third embodiment of the present invention for overlapping the adhesive film.

FIG. 6 is a combined diagram of another implementation of the third embodiment of the present invention in which the adhesive film is repeatedly applied.

In order to enable those skilled in the art to understand and implement the present invention, it is described in detail below with reference to the drawings and component symbols, but not limited thereto.

Please refer to the first diagram. The first diagram is an exploded view of the structure of the first embodiment of the overlapping adhesive film sheet of the present invention. As shown in FIG. 1, the overlapping adhesive film sheet 100 of the present invention is mainly composed of a flexible substrate 10 and a first substrate. A film layer 20 is formed, wherein the flexible substrate 10 has a first surface 11 and a second surface 12, wherein the material of the flexible substrate 10 is made of cotton cloth, and the first surface 11 of the flexible substrate 10 and The first film layer 20 Adhesion, wherein the bonding surface of the first film layer is closely adhered to the first surface 11 of the flexible substrate 10, and the material of the first film layer 20 is a styrene elastic film layer (SEBS), which is performed in this embodiment. Preparation of high-temperature curing adhesive, wherein the manufacturing method of the adhesive industry is to heat the mixed material of the first coating layer 20 to a glass transition temperature between 150 ° C and 250 ° C, so that the first coating layer material is melted to form a liquid and further Coated on an iron plate (not shown), and after standing and cooling for a period of time, the appearance of the first film layer 20 is formed, and then the cooled first film layer 20 is closely adhered to the soft substrate. The first surface 11 of 10, and the two materials of the above-mentioned bonded first film layer 20 and the flexible substrate 10 are further placed in a high-temperature baking curing device (such as a high-temperature hot press), and the first film is bonded Layer 20 and flexible substrate 10, which are heated again in a high-temperature hot press to a glass transition temperature between 250 ° C and 350 ° C, and the material of the first film layer 20 is a styrene elastic film layer (SEBS ) Will liquefy due to high temperature deformation And the material of the soft substrate 10 is cotton, wherein the first surface 11 of the soft substrate may further have a plurality of pores (not shown), and the first film layer 20 is liquefied when subjected to high-temperature baking and curing. The material can be further adhered and dissolved on the pores (not shown) of the first surface 11 of the flexible substrate, and the material is then annealed, cooled and left to stand, so that the first film layer 20 can be closely adhered to the flexible substrate 10 The overlapping adhesive film 100 is formed at least once, and the above-mentioned high-temperature baking and curing process is at least one or more times. The overlapping adhesive film 100 can be repeatedly and repeatedly baked and cured according to the required adhesive strength to increase the number of times. The bonding strength of the first film layer 20 and the flexible substrate 10 does not need to add an additional adhesive layer or bonding in the cloth layer as in the conventional technology. Layer, in order to combine the flexible substrate 10 with the first film layer 20, as shown in FIG. 2, and the flexible substrate 10 and the first film layer 20 in the overlapping adhesive film 100 of the technology of the present application, as described above After multiple high-temperature baking and curing processes, it is not easy to produce a peeling state between the two, and it is not affected by the high temperature in the actual environment, which changes the material of the two and causes a separation state.

Continuing the above-mentioned first embodiment, it can be seen in FIG. 2 that the adhesive bonding is repeated. In the above embodiment, the first film layer 20 is formed by a baking and curing process at a high temperature, and the surface of the first film layer 20 is formed on the surface. A plurality of micro-bubble structures 21 are further formed thereon, wherein the micro-bubble structures 21 are randomly arranged in the first film layer and there is no specific regular shape or arrangement, and the first film layer 20 is produced by high temperature baking and curing. The function of the micro-bubble structure 21 has a vacuum sucker effect. When the micro-bubble structure 31 is adhered to the surface of another object (such as a wall surface, not shown), the surface tension of the overlapping adhesive film 100 can be increased. In order to obtain a better adhesion and more stable effect of the overlapping adhesive film layer structure, the thickness of the first film layer 20 in this embodiment is between 0.01-0.5 cm according to the applied styrene elastic film layer (SEBS) material. Depending on the number, the thickness of the first film layer in this embodiment is preferably 0.2 cm. The first film layer 20 formed by the above-mentioned high-temperature baking and pasting preparation process has the function of repeating pasting multiple times. Tear off I glue residue without cause, in order to improve the convenience of the use of the diaphragm.

Following the first embodiment, the material of the flexible substrate 10 in this embodiment can be further replaced with linen, cotton yarn, non-woven fabric, textile fiber, natural fiber, chemical fiber, nylon or rayon fiber, and no limitation is set here.

Please refer to the third figure for a structural combination diagram of the second embodiment of the re-adhesive film sheet according to the present invention. As shown in FIG. 3, the overlapping adhesive film 200 of the present invention is mainly composed of a flexible substrate 10, a first film layer 20 and a protective layer 30. The material of the flexible substrate 10 in this embodiment is For cotton cloth, the material of the first film layer 20 is a styrene elastic film layer (SEBS). The material of the protective layer 30 further added in this embodiment is release paper, and the protective layer 30 is further added as shown in FIG. 3. When the overlapping adhesive film sheet 200 is not used, the protective layer 30 can protect the flexible substrate 10 and the first adhesive film layer 20 from being contaminated by foreign objects, so as to maintain the adhesive adsorption force of the first adhesive film layer 20. When the protective layer 30 is torn off when needed, it is used for pasting. The repeated high-temperature baking of the flexible substrate 10 and the first pasting layer 20 of the second embodiment of the second embodiment is the same as above. The conditional operation in the first embodiment will not be described again here.

Continuing the second embodiment as above, wherein the material of the soft substrate 10 in this embodiment can be further replaced with linen, cotton yarn, non-woven fabric, textile fiber, natural fiber, chemical fiber, nylon or rayon fiber, which is not limited here. The material of the protective layer 30 may be further replaced with polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET), which is not limited here, and the thickness of the first film layer 20 in the second embodiment The range is 0.01-0.5 cm, depending on the amount of styrene elastic film (SEBS) material applied.

Please refer to the fourth figure for the structural combination of the third embodiment of the overlapping adhesive film of the present invention. As shown in FIG. 4, the overlapping adhesive film 300 of the present invention is mainly composed of a flexible substrate 10, a first film layer 20 and a protective layer 30, wherein the flexible substrate The material of the material 10 is cotton, the material of the first film layer 20 is a styrene elastic film layer (SEBS), and the material of the protective layer 30 is a release paper, in which the flexible adhesive film 300 further comprises The second surface 12 further includes an adhesive layer 40. The adhesive layer 40 is used to adhere the second surface 12 of the flexible substrate and a hook structure 50. The material of the adhesive layer 40 in the third embodiment is acrylic adhesive, which can be used to attach a hook structure 50, wherein the hook structure 50 can provide a hanging function or a storage function (such as hanging towels, bathroom equipment, soap Box, toothbrush cup holder, etc.),

In addition, as shown in FIG. 5, as in the third embodiment described above, the adhesive layer 40 of the adhesive film can be bonded to other materials, wherein the adhesive layer 40 can be bonded to the second surface 12 and the picture layer of the flexible substrate. The implementation of 60, wherein the picture layer 60 can be replaced with a printed pattern layer or a non-slip pad and implemented in combination with the overlapping adhesive film 300.

Continuing the third embodiment, the material of the protective layer 30 in this embodiment is release paper. When the overlapping adhesive film 300 is not used, the protective layer 30 can protect the flexible substrate 10 and the first film layer 20 It is not contaminated by foreign objects in order to maintain the adhesive force of the first film layer 20, and the protective layer 30 is torn off when needed for use, and the adhesive film of the third embodiment is repeated. The manufacturing process of the high-temperature baking of the soft substrate and the first film layer is the same as the conditional operation in the first and second embodiments described above, so it will not be described again here.

Continuing the third embodiment as above, wherein the material of the soft substrate 10 in this embodiment can be further replaced with linen, cotton yarn, non-woven fabric, textile fiber, natural fiber, chemical fiber, nylon or rayon fiber, which is not limited here. The material of the protective layer 30 can be further replaced with polyethylene (PE), polypropylene (PP), or poly (phenylene terephthalate) Ethylene formate (PET) is not limited here, and the thickness of the first film layer 20 in the third embodiment is between 0.01 and 0.5 cm, depending on the amount of styrene elastic film layer (SEBS) material applied. In the third embodiment, the material of the adhesive layer 40 can be further replaced with hot-melt adhesive, hot-press adhesive, white adhesive, strong adhesive, epoxy resin, or styrene elastic film layer (SEBS).

Following the above embodiment, as shown in FIG. 6, the material of the adhesive layer 40 is replaced with a styrene elastic film layer (SEBS), and the overlapping adhesive film sheet 300 described above is the first in the flexible substrate 10. A styrene elastic film layer (SEBS) is provided on the surface 11 and the second surface 12 as the first film layer 20 in the above embodiment, and the above-mentioned manufacturing process of the styrene elastic film layer (SEBS) is the same as the first embodiment. The first film layer 20 in the example operates under a combination of conditions with a flexible substrate 10, so it will not be described again here, and the above-mentioned repeated adhesive film 300 is provided on both the upper and lower sides of the flexible substrate 10 The styrene elastic film layer (SEBS) can be used as a double-sided tape or a double-sided adhesive film, and a protective layer 30 can be further added to the above-mentioned styrene elastic film layer (SEBS) (as shown in FIG. 6). When the overlapping adhesive film sheet 300 is not used, the protective layer 30 can protect the styrene elastic film layer (SEBS) from being contaminated by foreign matter, so as to keep the styrene elastic film layer (SEBS) adhered and adsorbed. The protective layer 30 is torn off when needed for use. The protective layer 30 is made of release paper, or the protective layer material can be further replaced with polyethylene (PE) or polypropylene (PP). ) Or polyethylene terephthalate (PET).

To sum up, the design of the structure for re-adhering the adhesive film according to the present invention is indeed feasible, and various shortcomings of the conventional technology are improved. The above is only a comparison of the present invention. The preferred embodiments are not intended to limit the scope of patent application of the present invention; all other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in the scope of patent application described below.

Claims (8)

A repeatable adhesive film includes: a flexible substrate having first and second surfaces; a first film layer, the first film layer is a styrene elastic film (SEBS), and is adhered to The first surface of the flexible substrate; characterized in that the first film layer is cured by at least one high-temperature baking process, wherein during the high-temperature baking and curing process, the first film layer is heated to a glass transition temperature of The temperature is between 250 ° C. and 350 ° C., and is heated and bonded to the first surface of the flexible substrate to form the overlapping adhesive film. The overlapping adhesive film sheet according to item 1 of the scope of the patent application, wherein after the first film layer is subjected to a high-temperature baking and curing process, a plurality of micro-bubble structures are further formed on the surface of the first film layer. The overlapping adhesive film sheet as described in item 2 of the scope of the patent application, wherein the thickness of the first film layer is 0.01 to 0.5 cm. The overlapping adhesive film sheet according to item 3 of the scope of patent application, wherein the first film layer further includes a protective layer. The overlapping adhesive film according to item 4 of the scope of patent application, wherein the first surface of the flexible substrate further has a plurality of pores, and the material of the flexible substrate is linen, cotton yarn, cotton, non-woven fabric, and textile fiber , Natural fiber, chemical fiber, nylon or rayon. As described in item 5 of the scope of application for a patent, the protective film is made of release paper, polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET). The overlapping adhesive film according to item 6 of the patent application scope, wherein the second surface of the flexible substrate further comprises an adhesive layer, which is used to adhere the second surface of the flexible substrate with the adhesive layer. . The overlapping adhesive film according to item 7 of the scope of the patent application, wherein the material of the adhesive layer is hot melt adhesive, hot press adhesive, acrylic adhesive, white adhesive, super adhesive, epoxy resin or styrene. Membrane (SEBS).