TWI703043B - Flexible sticker and manufacturing method of the same - Google Patents

Abstract

A flexible sticker and a manufacturing method of the same are provided to solve the problem where the sticker made by the conventional manufacturing method is hard to stick to a curved surface and is not suitable for a secondary process. The manufacturing method includes forming a sticker body on a substrate and dividing the sticker body into a plurality of sticker blocks. The sticker body includes a first sticking layer, a first isolating layer, a pattern layer and a second isolating layer layered in series, and the first sticking layer is closest to the substrate. The plurality of sticker blocks is partially separated with each other and a gap of 0.035-5 mm is formed between two adjacent sticker blocks.

Description

Flexible sticker and its forming method

The invention relates to a sticker and a forming method thereof, in particular to a flexible sticker and a forming method thereof that can be adhered to a curved surface and can improve the processing success rate.

Due to the industrialized production model, items are often sold in a large and uniform manner. In order to increase the uniqueness and interest of the items, the user or store can perform secondary processing on the surface of the item. For example, color painting and carving can be used. Or sticking stickers and other methods; in the above methods, sticking stickers is a relatively low-tech and low-cost processing method, and the pattern, shape, or paper material of the stickers can be replaced according to preferences to present a diversified look.

The conventional method for forming a sticker is to coat adhesive on a paper material to produce a conventional sticker. The conventional sticker can be directly attached to the surface of an article, or it can be applied to other processing steps. For example, the conventional sticker can be pasted on a surface, and then the conventional sticker and the surface can be injection-molded. The conventional sticker forms a transparent protective layer outside the surface, thereby beautifying the surface while protecting and prolonging the service life of the conventional sticker.

However, the conventional sticker is only suitable for pasting on a flat surface. If it is pasted on a curved surface or a surface that is easily squeezed and deformed, the conventional sticker is not easy to bend or deform with the surface, and it is easy to produce wrinkles or bubbles, which affects the appearance. Sex and compliance. In addition, when the conventional sticker is subjected to injection molding processing, the high-temperature injection molding material easily causes the conventional sticker to swell and become uneven, and the injection molding material is not Easy to fit closely with the conventional sticker, thereby reducing the success rate of processing.

In view of this, the conventional sticker and its forming method do still need to be improved.

In order to solve the above-mentioned problems, the object of the present invention is to provide a flexible sticker that can be smoothly attached to a curved surface or an easily deformable surface, and it is not easy to wrinkle or fall off even after being compressed and deformed.

The secondary objective of the present invention is to provide a flexible sticker that can be closely combined with the injection molded material.

Another object of the present invention is to provide a flexible sticker that can simultaneously present bright and bright patterns and reflect light.

Another object of the present invention is to provide a flexible sticker that can be easily transferred to a target.

Another object of the present invention is to provide a method for forming a flexible sticker to obtain the aforementioned flexible sticker.

The following directionality of the present invention or its similar terms, such as "front", "rear", "left", "right", "up (top)", "down (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings. The directional or similar terms are only used to help explain and understand the embodiments of the present invention, and are not used to limit the present invention.

The approximate terms such as "combination", "combination" or "assembly" mentioned in the full text of the present invention mainly include the types that can be separated without destroying the components after being connected, or the components can not be separated after being connected, which are common knowledge in the field Those can be selected based on the materials of the components to be connected or assembly requirements.

The forming method of the flexible sticker of the present invention preferably includes: forming on a substrate A sticker body having a first adhesive layer, a first isolation layer, a pattern layer, and a second isolation layer stacked in sequence, the first adhesive layer being closest to the substrate; and the sticker The main body is divided into a number of partially separated sticker pieces, and a gap is formed between two adjacent sticker pieces. The width of the gap is 0.035~5mm.

According to this, the flexible sticker forming method of the present invention keeps the gap between two adjacent sticker blocks at an appropriate width, so that the several sticker blocks can be smoothly attached to an arc surface without It will affect the overall visual effect of the several sticker blocks; when the several sticker blocks are deformed or expanded due to external influences, the gap can provide enough space to reduce the possibility of the several sticker blocks being squeezed and falling off. In turn, the durability and conformability are improved. The gap can also be used to accommodate an injection molding material, so that the plurality of sticker blocks and the injection molding material are tightly combined to improve the processing success rate; in addition, the plurality of sticker blocks are not easily squeezed and deformed, and can maintain the The pattern integrity of the several sticker blocks has the effect of improving the conformability and aesthetics.

Wherein, the first adhesive layer may be formed on the substrate, the first isolation layer may be formed on the first adhesive layer, the pattern layer may be formed on the first isolation layer, and the second adhesive layer may be formed on the pattern layer. Isolation layer to obtain the sticker main body on the substrate. In this way, the substrate can be used as the basis for forming the main body of the sticker, and has the effect of improving the manufacturing convenience and the success rate.

Wherein, before forming the pattern layer on the first isolation layer, at least one reflective layer may be formed on the first isolation layer, and between the reflection layer and the first isolation layer, and between the reflection layer and the pattern Preferably, a bonding layer is formed between the layers. In this way, the at least one reflective layer can reflect light and help heat conduction, and has the effects of improving dazzling and processing success rate.

Wherein, the at least one reflective layer may include several reflective layers, and the adhesive layer is preferably formed between two adjacent reflective layers. In this way, the adhesive layer can help to join two adjacent reflective layers, and has the effect of improving structural stability.

Wherein, the plurality of sticker blocks are connected to one side adjacent to the substrate. So it can be straight The several sticker blocks are then torn off the base material and reposted, which has the effect of improving the convenience of use.

Wherein, the plurality of sticker blocks can be divided into squares. In this way, the plurality of sticker blocks can be adhered to curved surfaces with different bending directions, and the plurality of sticker blocks can be conveniently cut and manufactured, which has the effects of improving the degree of conformability and the convenience of manufacturing.

Wherein, the area of the surface of each sticker block away from the substrate may be 1 to 400 mm ² . In this way, the plurality of sticker blocks can be adhered to the curved surface, and it is not easy to produce wrinkles or bubbles, and has the effect of improving the degree of adherence.

The forming method of the flexible sticker of the present invention may further include forming an attachment sheet on the plurality of sticker blocks. In this way, the several sticker blocks can be conveniently transferred to other surfaces, which has the effect of improving the convenience of use.

The present invention also relates to a flexible sticker, comprising: a substrate; and a plurality of sticker blocks on the substrate, each sticker block has a first adhesive layer, a first isolation layer, and a pattern arranged in sequence Layer and a second isolation layer, and the first adhesive layer is closest to the substrate, and the two adjacent sticker pieces are partially separated with a gap, and the width of the gap is 0.035-5 mm. In this way, it has the effect of improving durability, conformability and processing success rate; moreover, the several sticker blocks are not easy to be squeezed and deformed, and the pattern integrity of the several sticker blocks can be maintained, which can improve the conformability and The effect of aesthetics.

Wherein, there may be at least one reflective layer between the pattern layer and the first isolation layer, and preferably there is a bonding layer between the reflective layer and the first isolation layer, and between the reflective layer and the pattern layer. . In this way, the at least one reflective layer can reflect light and help heat conduction, and has the effects of improving dazzling and processing success rate.

Wherein, the at least one reflective layer may include several reflective layers, and the adhesive layer is preferably provided between two adjacent reflective layers. In this way, the adhesive layer can help to join two adjacent reflective layers, and has the effect of improving structural stability.

Wherein, the plurality of sticker blocks can be connected to one side adjacent to the substrate. In this way, the several sticker blocks can be directly torn off the substrate and reposted, which has the effect of improving the convenience of use.

Wherein, the surfaces of the plurality of sticker blocks away from the substrate may be square. In this way, the plurality of sticker blocks can be adhered to curved surfaces with different bending directions, and the plurality of sticker blocks can be conveniently cut and manufactured, which has the effects of improving the degree of conformability and the convenience of manufacturing.

Wherein, the area of the surface of each sticker block away from the substrate may be 1 to 400 mm ² . In this way, the plurality of sticker blocks can be adhered to the curved surface, and it is not easy to produce wrinkles or bubbles, and has the effect of improving the degree of adherence.

The flexible sticker of the present invention may further include an attachment sheet on the plurality of sticker blocks. In this way, the several sticker blocks can be conveniently transferred to other surfaces, which has the effect of improving the convenience of use.

〔this invention〕

S1: Adhesive layer forming steps

S2: The first isolation layer forming step

S3: Pattern layer forming steps

S4: The second isolation layer forming step

S5: Segmentation step

S6: Attachment sheet forming steps

1: substrate

2: Sticker body

21: The first adhesive layer

22: The first isolation layer

23: pattern layer

24: reflective layer

25: Next layer

26: second isolation layer

2': sticker block

3: Attachment film

31: Overlay

32: The second adhesive layer

G: gap

[Figure 1] A text flow chart of the steps of the forming method of the present invention.

[Figure 2] A flow chart of the step structure of the forming method of the present invention.

[Figure 3] An exploded perspective view of the first embodiment of the flexible sticker of the present invention.

[Figure 4] The combined top view of the first embodiment of the flexible sticker of the present invention.

[Figure 5] A cross-sectional view of the first embodiment of the flexible sticker of the present invention.

[Figure 6] An enlarged view of the partial structure of area A shown in Figure 5.

[Figure 7] The second embodiment of the flexible sticker of the present invention has a cross-sectional view of the attachment sheet.

[Figure 8] An exploded perspective view of the second embodiment of the flexible sticker of the present invention without the attachment piece.

[Figure 9] A cross-sectional view of the second embodiment of the flexible sticker of the present invention without the attachment piece.

In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are described below in detail with the accompanying drawings: Please refer to Figure 1. It is an embodiment of the method for forming a flexible sticker of the present invention, which includes an adhesive layer forming step S1, a first isolation layer forming step S2, a pattern layer forming step S3, a second isolation layer forming step S4, A dividing step S5; wherein the first adhesive layer forming step S1, the first isolation layer forming step S2, the pattern layer forming step S3, and the second isolation layer forming step S4 are to form a sticker on a substrate 1 The main body 2, the dividing step S5 is to divide the sticker main body 2 into several sticker pieces 2'.

Please refer to Figures 1 and 2, the first adhesive layer forming step S1 is to form a first adhesive layer 21 of the sticker main body 2 on the substrate 1. The first adhesive layer 21 can be firmly adhered to the On the substrate 1, and can be separated from the substrate 1 without reducing the viscosity for transfer; therefore, the first adhesive layer 21 can be selected from styrene butadiene rubber (SBR), isoprene rubber (IR), butyl rubber (IIR) rubber, acrylic glue, water transfer glue or heat transfer glue, etc., and the substrate 1 can be coated paper, glassine paper, water transfer paper, polyethylene terephthalate (PET) ) Or transparent paper made of oriented stretched polypropylene (OPP), so that the sticker main body 2 can be firmly bonded and the substrate 1 can be easily separated.

Since the first adhesive layer 21 is sticky, it is easy to cause subsequent processing to be difficult. Continue to perform the first isolation layer forming step S2 on the first adhesive layer 21 so that a first isolation layer 22 is formed on the first adhesive layer 21 On; the first isolation layer 22 can be gold oil or bridging agent, etc., whereby the first isolation layer 22 can have a smooth and non-sticky surface, so that subsequent processing materials (such as patterned pigments) It can be attached to the surface of the first isolation layer 22 to improve the processing success rate.

The pattern layer forming step S3 is to form a pattern layer 23 on the first isolation layer On 22, the pattern layer 23 can be made by screen printing, embossing, gravure printing, digital printing, 3D printing, flatbed or flexographic printing, etc., to form fine and colorful patterns. In order to increase the visual richness, materials with different visual effects can be added above or below the pattern layer 23; for example, you can choose to process the pattern layer 23 (such as adding a bright film or a fog film, partially Light etc.), it is also possible to add a reflective layer under the pattern layer 23, which is not limited by the present invention.

The forming method of the flexible sticker of the present invention takes the addition of a reflective layer under the pattern layer 23 as an example. In detail, before forming the pattern layer 23, at least one reflective layer 24 may be formed on the first isolation layer 22, and between the reflective layer 24 and the first isolation layer 22, and between the reflective layer 24 and A bonding layer 25 is respectively formed between the pattern layers 23; the bonding layer 25 can be selected from gold oil, bridging agent or adhesive, etc., so that the bonding layer 25 can firmly bond the reflective layer 24 with the adjacent first isolation Layer 22 and the pattern layer 23. In addition, the at least one reflective layer 24 may include a plurality of reflective layers 24, and the adhesive layer 25 may be formed between two adjacent reflective layers 24 to firmly bond the two adjacent reflective layers 24.

The reflective layer 24 can be made of metal foil such as gold foil, silver foil, or reflective glass beads, and can be made by coating, vacuum plating, vapor deposition, hot stamping or cold stamping. Thereby, the reflective layer 24 can reflect light, increase the dazzling degree, and present a unique visual effect; on the other hand, if the sticker body 2 needs to be heated during subsequent processing, the reflective layer 24 can help heat conduction. Reducing the possibility of wrinkles caused by the thermal expansion of the sticker main body 2 is helpful to improve the flatness of the sticker main body 2.

The second isolation layer forming step S4 is to form a second isolation layer 26 on the pattern layer 23 to form the sticker main body 2 on the substrate 1. The second isolation layer 26 can be selected from gold oil or bridging agent, etc., so that the second isolation layer 26 can protect the pattern layer 23 and the reflective layer 24, so that the pattern layer 23 and the reflective layer 24 are not susceptible to temperature and moisture. Or it may fade or oxidize under the influence of oxygen, or it may be mottled off under the action of external force to extend the durability of the pattern or visual effect.

Please refer to Figures 2 to 4, in order to improve the degree of conformity, the dividing step S5 is performed on the sticker body 2. The dividing step S5 can divide the sticker body 2 with a larger area into The plurality of sticker blocks 2'with a smaller area forms a gap G between any two adjacent sticker blocks 2'; when the plurality of sticker blocks 2'are pasted on a curved surface, the gap G provides enough space for the plurality of sticker blocks 2'to expand and contract, so as to avoid the plurality of sticker blocks 2'at the curvature of the curved surface from squeezing each other, thereby avoiding wrinkles that may cause the pattern to be deformed or easy to fall off.

In addition, the width of the gap G is preferably 0.035~5mm. In addition to keeping the appropriate spacing between the plurality of sticker blocks 2', when the plurality of sticker blocks 2'are injection-molded, the plurality of sticker blocks 2' The sticker block 2'will contact the high-temperature injection molding material and expand. At this time, the gap G can ensure that the plurality of sticker blocks 2'are not prone to wrinkles after expansion; the gap G can also guide the injection molding material to flow and contain parts The injection molding material enables the plurality of sticker blocks 2'to be completely covered by the injection molding material, which improves the adhesion between the plurality of sticker blocks 2'and the injection molding material, thereby increasing the processing success rate.

The dividing method of the dividing step S5 is not limited. The plurality of sticker blocks 2'of different shapes or sizes can be divided according to the surface to be bonded, and two adjacent sticker blocks 2'are divided into at least partially separated. For example, the plurality of sticker blocks 2'can be rectangular, square, or circular, and preferably a plurality of squares of similar size; furthermore, the plurality of sticker blocks 2'can also be divided into completely separated shapes, and The area of the surface of the plurality of sticker blocks 2'far away from the substrate is preferably 1~400mm ² , so the plurality of sticker blocks 2'can be adhered to curved surfaces in different bending directions, and can be easily cut and reduced The process of the several sticker blocks 2'.

Then, an attachment sheet forming step S6 may be performed on the plurality of sticker blocks 2', so that an attachment sheet 3 is formed on the plurality of sticker blocks 2', the attachment sheet 3 has a covering layer 31 and a second adhesive layer 32 is formed under the cover layer 31, and the second adhesive layer 32 further adheres to the second isolation layer 26 of the plurality of sticker blocks 2', whereby the plurality of sticker blocks 2'can be firmly bonded to the cover layer 31, In order to maintain the position of the plurality of sticker blocks 2'; in addition, when the attachment sheet 3 is torn apart, the plurality of sticker blocks 2'can be taken up by the attachment sheet 3 to facilitate the transfer of the plurality of sticker blocks 2' To other surfaces, improve use Time convenience.

The second adhesive layer 32 can be made of styrene hot melt adhesive or silicone resin, and the covering layer 31 can be made of polyethylene terephthalate (PET), polyvinyl chloride (PVC) or directional drawing. Stretched polypropylene (OPP) and other materials; when the attachment sheet 3 is subjected to pressure or high temperature, the second adhesive layer 32 will lose its adhesion, so that the covering layer 31 can be easily removed after transfer. Alternatively, it is also possible to form a peelable film on the plurality of sticker blocks 2'as the attachment sheet 3, that is, directly coat the peelable film glue on the plurality of sticker blocks 2', and wait for the peelable film glue to dry The peelable film can then be formed, thereby reducing the manufacturing process and cost.

It is worth noting that the aforementioned steps are to sequentially form the first adhesive layer 21, the first isolation layer 22, the pattern layer 23, and the second isolation layer 26 on the substrate 1 to obtain On the sticker body 2; in addition, you can also choose to first stack the first adhesive layer 21, the first isolation layer 22, the pattern layer 23 and the isolation layer 26, and then after the sticker body 2 is obtained The sticker body 2 is combined with the base material 1, and the present invention is not limited.

Please refer to Figures 5 and 6, by the method of forming a flexible sticker of the present invention, the flexible sticker as shown in the figure can be produced, wherein the flexible sticker includes the substrate 1, the plurality of stickers The block 2'is located on the substrate 1, and each sticker block 2'has the first adhesive layer 21, the first isolation layer 22, the pattern layer 23, and the second isolation layer 26 from bottom to top in sequence. The attachment sheet 3 is located on the plurality of sticker blocks 2'.

According to the aforementioned structure, when the user uses the flexible sticker, the flexible sticker can be torn apart by the base material 1 and the attachment sheet 3, and the plurality of sticker blocks 2'will be separated from the base material. 1. and adhere to the attachment sheet 3, the user can paste the first adhesive layer 21 of the plurality of sticker blocks 2'on a surface of the target, and confirm that the plurality of sticker blocks 2'are all attached to the After the surface, apply pressure or increase the temperature to the outside of the attachment sheet 3 to make the second adhesive layer 32 of the attachment sheet 3 separate from the plurality of sticker blocks 2', so that the attachment sheet 3 can be easily removed. And smoothly paste the sticker blocks 2'to the table Surface.

Please refer to Figures 7-9, which are the second embodiment of the flexible sticker forming method of the present invention. In this embodiment, the plurality of sticker blocks 2'are divided into partial separation, and the plurality of sticker blocks 2'are connected to the side adjacent to the substrate 1; even if the first of the plurality of sticker blocks 2' The adhesive layer 21 and the first isolation layer 22 are connected, whereby the plurality of sticker blocks 2'can be directly torn off the base material 1 and transferred to the curved surface to increase the convenience of use.

In the second embodiment, it is possible to choose whether to perform the attachment sheet forming step S6 for the plurality of sticker blocks 2', and the present invention is not limited. If the attachment sheet forming step S6 is performed, the attachment sheet 3 can prevent the user from touching the first adhesive layer 21 when the user tears off the flexible sticker, resulting in decreased adhesion, which can increase the success rate of reposting (such as (Shown in Figure 7); if the attachment sheet forming step S6 is not performed, materials, manufacturing processes, and manufacturing costs can be reduced (as shown in Figures 8 and 9).

In summary, the flexible sticker forming method of the present invention keeps the gap between two adjacent sticker blocks at an appropriate width, so that the several sticker blocks can be smoothly attached to an arc surface. And it will not affect the overall visual effect of the several sticker blocks; when the surface to which the several sticker blocks are attached is deformed, the gap can provide enough space to reduce the possibility of the several sticker blocks being pressed against each other and falling off. In turn, the durability and conformability are improved. The gap can also be used for accommodating an injection molding material, so that the plurality of sticker blocks and the injection molding material are closely combined, so as to improve the processing success rate.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art without departing from the spirit and scope of the present invention may make various changes and modifications relative to the above-mentioned embodiments. The technical scope of the invention is protected. Therefore, the scope of protection of the invention shall be subject to the scope of the attached patent application.

S1: Adhesive layer forming steps

S2: The first isolation layer forming step

S3: Pattern layer forming steps

S4: The second isolation layer forming step

S5: Segmentation step

S6: Attachment sheet forming steps

Claims (15)

A method for forming a flexible sticker includes: forming a sticker body on a substrate, the sticker body having a first adhesive layer, a first isolation layer, a pattern layer, and a second isolation layered in sequence The first adhesive layer is closest to the substrate; and the sticker main body is divided into a number of partially separated sticker pieces, a gap is formed between two adjacent sticker pieces, and the width of the gap is 0.035-5 mm. The method for forming a flexible sticker of claim 1, wherein the first adhesive layer is formed on the substrate, the first isolation layer is formed on the first adhesive layer, and the first isolation layer is formed The pattern layer and the second isolation layer are formed on the pattern layer to obtain the sticker main body on the substrate. For example, the method for forming a flexible sticker of claim 2, wherein, before forming the pattern layer on the first isolation layer, at least one reflective layer is formed on the first isolation layer, and the reflective layer and the first isolation layer A bonding layer is formed between the isolation layers and between the reflective layer and the pattern layer. According to the method for forming a flexible sticker of claim 3, wherein the at least one reflective layer includes a plurality of reflective layers, and the adhesive layer is formed between two adjacent reflective layers. According to claim 1, the flexible sticker forming method, wherein the plurality of sticker blocks are connected to one side adjacent to the substrate. For example, the flexible sticker forming method of claim 5, wherein the plurality of sticker pieces are divided into squares. For example, the flexible sticker forming method of claim 6, wherein the area of the surface of each sticker piece away from the substrate is 1 to 400 mm ² . For example, the forming method of the flexible sticker of claim 1 further includes forming an attachment sheet on the plurality of sticker blocks. A flexible sticker, comprising: a substrate; and a plurality of sticker blocks on the substrate, each sticker block has a first adhesive layer, a first isolation layer, a pattern layer and a first There are two isolation layers, and the first adhesive layer is closest to the substrate, and the two adjacent sticker pieces are partially separated and have a gap. The width of the gap is 0.035-5 mm. The flexible sticker of claim 9, wherein there is at least one reflective layer between the pattern layer and the first isolation layer, and between the reflective layer and the first isolation layer, and between the reflective layer and the pattern layer There is an adhesive layer between them. Such as the flexible sticker of claim 10, wherein the at least one reflective layer includes a plurality of reflective layers, and the adhesive layer is provided between two adjacent reflective layers. For example, the flexible sticker of claim 9, wherein the plurality of sticker blocks are connected to one side adjacent to the substrate. For example, the flexible sticker of claim 12, wherein the surfaces of the plurality of sticker blocks away from the substrate are square. For example, the flexible sticker of claim 13, wherein the area of the surface of each sticker piece away from the substrate is 1~400mm ² . For example, the flexible sticker of claim 9 also includes an attachment sheet on the plurality of sticker blocks.

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