TWI819913B - Tape - Google Patents

Abstract

The present disclosure provides a tape including a release film and an adhesive. The release film includes a main portion, a separation portion and a separation joint. The separation joint is at the junction of the main portion and the separation portion, or the separation joint is on the separation portion. The adhesive is on a side of the release film. The adhesive extends from the main portion beyond the separation joint, and partially located at the separation portion.

Description

tape

This application relates to an adhesive tape.

Conventional electronic products usually use a large amount of tape for sticking during the production process. The tape is usually composed of a colloid and a release film. The release film is placed on one side of the colloid. When the colloid is away from the side of the release film When it is attached to the surface to be veneered, tear off the release film from the colloid to achieve double-sided adhesion of the colloid. However, due to the unstable viscosity of the release film or poor cutting, reverse release problems usually occur, that is, when the release film is peeled off, the tape will be pulled away from the surface to be laminated at the same time.

On the one hand, this application provides an adhesive tape, including: A release film, the release film includes a body part, a separation part and a dividing seam, the dividing seam is provided at the interface between the body part and the separation part or on the separation part; and The colloid is arranged on one side of the release film. The colloid extends from the body part of the release film beyond the dividing slit and is partially located in the separation part.

The adhesive tape provided in the embodiment of the present application has a release film including a separation part, so that when the adhesive tape is bent in the inward direction of the release film, the separation part can pop up in the direction of the colloid, thereby moving toward the colloid. Apply a force in a direction away from the release film to promote the separation of the colloid and the release film, so that when the tape is attached to an object to be attached and the release film is torn off, the The separation part can prevent the colloid from detaching from the object to be attached along with the release film, which is beneficial to reducing the probability of reverse release and improving product yield.

In one embodiment, the colloid includes a first side, and the separation part covers the first side, and the separation part is used to bend the adhesive tape in the inward direction of the release film, The end of the colloid close to the first side is separated from the release film.

In one embodiment, the dividing slit includes a plurality of through holes opened on the release film and arranged at intervals along the same direction, so that when the tape is bent, the separation part and the main body part are separated. Forming corners.

In one embodiment, the vertical distance between the projection of the dividing seam on the colloid and the first side is 1-2 mm.

In one embodiment, the dividing slit is parallel to the first side.

In one embodiment, the separation part is provided with a plurality of dividing slits, and the plurality of dividing slits are arranged at intervals in a direction from the main body part to the separating part.

In one embodiment, each of the dividing slits is curved, and a portion of the separating portion surrounded by the dividing slits forms a sub-separating portion, and each of the sub-separating portions is used to apply distance to the colloid. The force in the direction of the release film causes each of the sub-separation parts to at least partially cover the colloid.

In one embodiment, each of the dividing slits includes a separation section parallel to the first side and a bending section respectively connected to both ends of the separation section, and the bending section is used to bring the separation part closer to The part of the separation section protrudes toward the direction of the colloid when the tape is bent in the inward direction of the release film.

In one embodiment, the length of the separation portion in a direction perpendicular to the first side is greater than or equal to 10 mm.

In one embodiment, the release film completely covers the colloid and extends beyond the first side.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by a person skilled in the technical field of this application. The terms used in the description of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose, the present application will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Embodiment 1

Embodiment 1 of the present application provides an adhesive tape. Please refer to Figures 1 and 2 together. The adhesive tape 100 includes a colloid 10 and a release film 30. The colloid 10 is disposed on one side of the release film 30, for example, attached to the release film 30. A surface of the molding film 30 . The release film 30 includes a main body part 31 and a separation part 133. A dividing slit 132 is provided at the junction of the main body part 31 and the separating part 133. The colloid 10 extends from the main body part 31 of the release film 30 beyond the dividing slit 132, so that part of it is located in the separation part. Department 133. The dividing seam 132 is used to bend the separation part 133 toward the release film 30 side when the tape 100 is bent in the inward direction of the release film 30 , and the end of the separation part 133 connecting the main part 31 faces the direction of the colloid 10 It is used to push against the colloid 10 and exert a force F in the direction away from the release film 30 .

Specifically, the dividing seam 132 is used to change the stress inside the release film 30. When the separation seam 132 is not provided, when the release film 30 is bent, stress will be generated inside the release film 30, and the stress will be The direction is opposite to the bending direction of the release film 30 . After the dividing seam 132 is provided, the stress between the separation part 133 and the main body part 31 is discontinuous due to the action of the dividing seam 132. When the release film 30 is bent, under the same bending angle, the main body part 31 The internal stress and the stress inside the separation part 133 act separately and are simultaneously released at the position of the dividing slit 132, thereby generating a force F in the convex direction of the release film 30 at the position of the dividing slit 132, so that the separating part 133 is connected to the main body. The end of the portion 31 is pushed toward the direction of the colloid 10 .

In this embodiment, the colloid 10 includes a first side 11 , and a separation part 133 covers the first side 11 . The separation part 133 is used to bring the colloid 10 close to the first side 11 when the adhesive tape 100 is bent in the inward direction of the release film 30 . One end of the side 11 is separated from the release film 30 . Specifically, when the tape 100 is bent, since the colloid 10 is located on the convex side of the release film 30 , a force F in the convex direction of the release film 30 is generated at the end of the separation part 133 close to the dividing slit 132 . In this case, the separation part 133 exerts a force on the colloid 10 away from the release film 30. Under the action of the force F, the end of the colloid 10 close to the first side 11 will be separated from the release film 30.

In this embodiment, the dividing slit 132 includes a plurality of through holes 34 opened on the release film 30 and arranged at intervals along the same direction. When the adhesive tape 100 is bent, a folding angle is formed between the separating part 133 and the main part 31 . . Specifically, the dividing slit 132 is an imaginary knife line, so that the plurality of through holes 34 arranged at intervals between the separation part 133 and the main body part 31 remain in a partially disconnected state. When the release film 30 begins to bend, stress will be generated inside the release film 30 to prevent the bending. As the degree of bending increases, the stress generated inside the release film 30 will gradually increase until the separation part 133 and the main body part 31 are bent along the dividing seam 132 under the action of stress, so that a folded angle is formed between the separation part 133 and the main body part 31 . While the bending angle is formed between the separation part 133 and the main body part 31, the stress generated by the bending on the release film 30 will cause the main body part 31 and the separation part 133 to respectively recover from the bent state to a flat state, so that during separation The end of the portion 133 close to the dividing slit 132 generates a force F in the convex direction of the release film 30 , and then generates a force F in the direction of the colloid 10 away from the release film 30 .

In this embodiment, the release film 30 completely covers the colloid 10 and extends beyond the first side 11 . Specifically, the tape 100 is used to adhere to a surface to be pasted on a workpiece, and to adhere the surface to be pasted to another object to be pasted. After the side of the colloid 10 away from the release film 30 is attached to the surface to be pasted, the release film 30 needs to be torn off from the colloid 10 so that the side of the colloid 10 away from the surface to be pasted can be pasted. When tearing off the release film 30, the release film 30 is usually lifted from a position close to the first side 11 of the colloid 10. The release film 30 extends from the colloid 10 beyond the first side 11, so as to facilitate the separation of the release film 30 and the colloid. 10 is separated, and is beneficial to avoid contact between the colloid 10 and other objects, and is beneficial to maintaining the viscosity of the colloid 10.

In this embodiment, the dividing slit 132 is parallel to the first side 11 . Specifically, the dividing seam 132 is used to create an angle between the separation part 133 and the main body part 31, thereby generating a force F that makes the colloid 10 move away from the release film 30. Therefore, when the release film 30 starts to tear from the first edge 11 During removal, the dividing seam 132 needs to be perpendicular to the direction in which the release film 30 is torn off in order to form a folding angle, thereby generating a force F and causing the colloid 10 to separate from the release film 30 . In other embodiments, the dividing seam 132 may not be parallel to the first side 11 . In this case, if you want to achieve the folding effect, you need to tear off the release film 30 in a direction perpendicular to the dividing seam 132 .

In this embodiment, the vertical distance d1 between the projection of the dividing slit 132 on the colloid 10 and the first side 11 is 1-2 mm. Specifically, when the adhesive tape 100 is attached to an object to be attached (not shown), the release film 30 can be torn off from the adhesive 10 from the direction of the first side 11 , so the dividing seam is set on the adhesive. 10 is close to the end of the first side 11 to prevent the colloid 10 from being peeled off from the object to be attached as the release film is bent when the release film 30 is removed. Whether the colloid 10 will produce reverse release depends on the force F generated by the separation part 133 on the colloid 10 and the adhesion force between the colloid 10 and the object to be attached and the release film 30 .

For example, when the distance d1 between the dividing seam 132 and the first side 11 is relatively far (for example, the distance d1 is greater than 2 mm), when the release film 30 is bent in a direction away from the colloid 10, if the colloid 10 and If the adhesive force between the objects to be attached is less than the adhesive force between the colloid and the release film 30 , the colloid 10 will bend along with the release film 30 . After the release film 30 is bent to the position of the dividing slit 132 and a force F is generated between the separation part 133 and the main body part 31, if the force F at this time is less than the adhesive force between the colloid 10 and the release film 30, Then the colloid 10 and the release film 30 cannot be separated, resulting in reverse release. When the distance d1 between the dividing seam 132 and the first side 11 is relatively short (for example, the distance d1 is less than 1 mm), when the release film 30 is bent in a direction away from the colloid 10 , the release film 30 is bent to At the position of the dividing seam 132, the force F generated is greater than the adhesive force between the colloid 10 and the release film 30. The colloid 10 and the release film 30 are separated at the corresponding separation part 133. At this time, the release film 30 continues to be peeled off. If If the adhesive force between the colloid 10 and the object to be adhered is less than the adhesion force between the colloid 10 and the release film 30, the colloid 10 will still separate from the object to be adhered and bend along with the body part 31 of the release film 30, resulting in Anti-separation. Therefore, by setting the distance d1 between the dividing seam 132 and the first side 11 to 1-2 mm, it is helpful to ensure that when the release film 30 is torn off from the colloid 10, the force F generated can prevent the colloid 10 from continuing to adhere to the release film 30. on the molding film 30.

In this embodiment, the tape 100 is a pre-cut tape with a specific size. Specifically, the preparation of the adhesive tape 100 includes laminating the release film 30 and the colloid 10 and then cutting it into the required size. Therefore, when the size is determined, the release film 30 and the colloid 10 can be bonded in advance. A dividing slit 132 is provided on the release film 30 .

The tape 100 provided in the embodiment of the present application has a dividing slit 132 including a plurality of through holes 34 spaced apart in the same direction on the release film 30, so that when the release film 30 is bent, the separation part 133 can be close to the dividing slit. One end of 132 generates a force F in the direction of bulging toward the release film 30 , thereby exerting a force on the colloid 10 away from the release film 30 , causing the colloid 10 to separate from the release film 30 . By setting the distance d1 between the dividing slit 132 and the first side 11 , the colloid 10 can be separated from the part of the release film 30 corresponding to the separation part 133 , and the part of the colloid 10 corresponding to the body part 31 will not follow the release film 30 Peeling improves the stability of the tape 100 and improves the product yield.

Embodiment 2

Embodiment 2 of the present application provides an adhesive tape. Please refer to Figures 3 and 4 together. The adhesive tape 200 includes a colloid 10 and a release film 30. The release film 30 includes a body part 31 and a separation part 233. The separation part 233 is provided with a plurality of divisions. The difference between the slits 232 and the first embodiment is that each dividing slit 232 is a slit opened on the release film 30 , and the plurality of dividing slits 232 are arranged at intervals along the direction from the body part 31 to the separation part 233 . Specifically, each dividing slit 232 is a slit that penetrates the release film 30 so that the body part 31 and the separation part 233 on both sides of the dividing slit 232 are disconnected.

In this embodiment, each dividing slit 232 is curved, so that the separation portion 233 partially surrounded by the dividing slit 232 forms a sub-separating portion 2331 . Each sub-separation part 2331 is used to exert a force on the colloid 10 in a direction away from the release film 30 , and each sub-separation part 2331 at least partially covers the colloid 10 . Specifically, the plurality of sub-separation parts 2331 respectively correspond to a part of the colloid 10. When the release film 30 is torn off from the colloid 10, each sub-separation part 2331 can generate a force F on the colloid 10 in a direction away from the release film 30. Thereby, the colloid 10 is continuously prevented from detaching from the object to be attached.

In this embodiment, the dividing seam 232 includes a separation section 232a parallel to the first side 11 and a bending section 232b respectively connected to both ends of the separation section 232a. The bending section 232b is used to make the separation part 233 close to the part of the separation section 232a. When the adhesive tape 100 is bent with the release film 30 inward, it protrudes toward the direction of the colloid 10 . Specifically, the dividing slit 232 is approximately in the shape of a trapezoid, the separating section 232a is the top edge of the trapezoid, the two bending sections 232b are respectively the two sides of the trapezoid, and the separating section 233 is partially located in the trapezoidal structure formed by the dividing slit 232 . When the release film 30 is bent, since the end of the separation part 233 close to the separation section 232a is not connected to the body part 31, it will not bend with the release film 30. Under the action of stress, the separation part 233 remains flat. state, thereby protruding relative to the release film 30 . When the tape 100 is attached to an object to be attached (not shown), if the release film 30 is torn off from the direction of the first side 11 , the separation part 233 will remain flat when the release film 30 is bent, so that The release film 30 protrudes in the direction of the colloid 10 relative to the bend, and generates a force F on the colloid 10 away from the release film 30 , causing the colloid 10 to separate from the release film 30 . In other embodiments, the dividing slit 232 can also be in other approximate shapes, such as triangles, rectangles or arcs, which is not limited in this application.

In this embodiment, the length d2 of the separation part 233 in the direction perpendicular to the first side 11 is greater than or equal to 10 mm. Specifically, the separation part 233 includes a plurality of sub-separation parts 2331 , and each sub-separation part 2331 generates a force on the colloid 10 in a direction away from the release film 30 . However, the separation part 233 needs to maintain a sufficient length d2 to ensure that the release film 30 can be completely separated from the colloid 10 . For example, if the length d2 is too short, after the separation part 233 is separated from the colloid 10 and the main part 31 is continued to be peeled off, the adhesive force between the colloid 10 and the object to be attached will still be smaller than that between the colloid 10 and the release film 30 The colloid 10 will be detached from the object to be attached as the body portion 31 bends due to the adhesive force between them. Therefore, it is necessary to ensure the length d2 of the separation part 233 to ensure that the colloid 10 can be completely separated from the release film 30 .

In this implementation, the length d2 of the separation part 233 in the direction perpendicular to the first side 11 can be 10-15mm, 15-20mm, 20-25mm... etc. This application does not limit this. In other embodiments , the release film 30 may also include only the separation part 233, that is, the entire release film 30 is provided with a plurality of dividing slits 232 arranged in parallel.

In this embodiment, the tape 200 may be a pre-cut tape with a specific size. Specifically, the preparation of the adhesive tape 200 includes laminating the release film 30 and the colloid 10 and then cutting it into the required size. Therefore, when the size is determined, the release film 30 and the colloid 10 can be bonded in advance. A dividing slit 232 is provided on the release film 30 . In other embodiments, the adhesive tape 200 can also be an adhesive tape of unlimited length. In this case, the release film 30 only includes the separation part 233. The adhesive tape 200 cut from any position, when the release film 30 and the colloid 10 are torn apart, The separation part 233 can generate a force F on the colloid 10 away from the release film 30, thereby separating the colloid 10 from the release film 30, thereby expanding the application scenarios of the tape 200 and improving the flexibility of use.

In the adhesive tape 200 provided in the embodiment of the present application, by setting the dividing slit 232 as a slit partially surrounding the separation part 233, the end of the separation part 233 close to the main body part 31 can be convex in the direction of the colloid 10 when the release film 30 is bent. out, thereby generating a force F in the direction away from the release film 30 on the colloid 10, thereby causing the colloid 10 to separate from the release film 30. By providing multiple dividing slits 232 , the separation part 233 can include a plurality of sub-separation parts 2331 , thereby ensuring that the colloid 10 can be completely separated from the release film 30 .

Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present invention and are not used to limit the present invention. As long as they are within the scope of the essential spirit of the present invention, appropriate changes can be made to the above embodiments. and changes are within the scope of protection claimed by the present invention.

100, 200: Tape 10: Colloid 11: First side 30: Release film 31: Ontology part 133, 233: Separation Department 2331:Sub-separation department 132, 232: dividing seam 34:Through hole 232a: Separation section 232b: Bending section d1: distance d2: length F: force

Figure 1 is a schematic top view of the adhesive tape according to the first embodiment of the present application.

Figure 2 is a schematic diagram of the bending state of the adhesive tape according to the first embodiment of the present application.

Figure 3 is a schematic top view of the adhesive tape according to the second embodiment of the present application.

Figure 4 is a schematic diagram of the bending state of the adhesive tape according to the second embodiment of the present application.

100:Tape

10: Colloid

11: First side

30: Release film

31: Ontology part

133:Separation Department

132: Split seam

34:Through hole

d1: distance

Claims (10)

An adhesive tape including: A release film, the release film includes a body part, a separation part and a dividing seam, the dividing seam is provided at the interface between the body part and the separation part or on the separation part; and The colloid is arranged on one side of the release film. The colloid extends from the body part of the release film beyond the dividing slit and is partially located in the separation part. The adhesive tape according to claim 1, wherein the colloid includes a first side, the separation part covers the first edge, and the separation part is used to adjust the adhesive tape in the inward direction of the release film. When bending, the end of the colloid close to the first side is separated from the release film. The adhesive tape according to claim 2, wherein the dividing slits include a plurality of through holes opened on the release film and arranged at intervals along the same direction, so that when the adhesive tape is bent, the separation part and Corners are formed between the body parts. The tape according to claim 3, wherein the vertical distance between the projection of the dividing seam on the colloid and the first side is 1-2 mm. The adhesive tape according to claim 3, wherein the dividing seam is parallel to the first side. The adhesive tape according to claim 2, wherein the separation part is provided with a plurality of dividing slits, and the plurality of dividing slits are arranged at intervals in a direction from the main body part to the separating part. The tape according to claim 6, wherein each of the dividing slits is curved, and the part of the separating part surrounded by the dividing slits forms a sub-separating part, and each of the sub-separating parts is used for The colloid exerts a force in a direction away from the release film, and each of the sub-separation parts at least partially covers the colloid. The tape according to claim 6, wherein each of the dividing seams includes a separation section parallel to the first side and a bending section respectively connected to both ends of the separation section, and the bending section is used to make The part of the separation part close to the separation section protrudes toward the direction of the colloid when the tape is bent in the inward direction of the release film. The tape according to claim 8, wherein the length of the separation portion in a direction perpendicular to the first side is greater than or equal to 10 mm. The adhesive tape according to claim 2, wherein the release film completely covers the colloid and extends beyond the first side.

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