TWI482725B - Modified sealing tape structure - Google Patents

Description

Sealed belt improved structure

The present invention relates to an improved structure for a closure tape for use in roll and flexible packaging; in particular, the present invention relates to a closure tape for an electronic component having the function of securing electronic components.

At present, most surface-mount devices (SMD), which are commonly used as a smooth surface, are bonded to a download tape having a plurality of pockets for accommodating electronic components. The download tape having a plurality of pockets is bonded to the uploading tape to form a sealing tape for placing the electronic component. In conjunction with the automated machine in the automated assembly process, when the electronic component is taken, the entire device sealing structure is placed in the peeling mechanism, and the electronic component is taken out from the bag of the download tape by the automatic adsorption terminal for further process use. .

Figure 1A shows an automatic stripping device that strips the carrier tape 30 and removes the electronic components from the bladder 22 of the download tape 20 using an automatic suction terminal, which is the most common use in practice.

FIG. 1B is a schematic cross-sectional view showing the current electronic component sealing device. As shown in FIG. 1B, the closure strip 10 includes an upload tape 30 and a download tape 20; the upload tape 30 includes an inner surface 32 that faces the download tape 20. The download tape 20 has a pocket 22 for housing the electronic component 40.

The inner surface 32 of the carrier tape 30 as shown in Figure 1B is a smooth surface structure. At the time of winding up the package, the electronic component 40 moves up and down in the closed space formed by the carrier tape 30 and the download tape 20 by the flipping of the sealing tape 10, and the component surface 42 of the electronic component 40 is likely to adhere to the carrier tape 30.

In practical applications, since the sealing tape 10 involves a bonding and peeling process, when the carrier tape 30 is separated from the download tape 20, if the adhesive force is low, large, or uneven, various problems will occur. For example, when the viscosity is low, the easy storage process is impacted by an external force to separate the download tape 20 from the loading tape 30, causing the electronic component 40 to scatter; when the viscosity is too high, the loading tape 30 is in the peeling process. In this case, the component surface 42 of the electronic component 40 placed in the pouch 22 is likely to adhere to the inner surface 32 of the carrier tape 30, thereby affecting the process operation and productivity.

In addition, when the sealing tape 10 is reversed to move the electronic component 40 up and down in the closed space, the electronic component 40 adhered to the inner surface 32 of the carrier tape 30 is not easily peeled off because of the large area of the electronic component 40.

SUMMARY OF THE INVENTION One object of the present invention is to provide an improved structure of a sealing tape which is provided with a protruding structure derived from an uploading tape as a stopper to provide a function of fixing electronic components.

Another object of the present invention is to reduce the contact area between the inner surface of the carrier tape and the surface of the electronic component by the contact portion of the carrier tape, thereby reducing the adhesion between the smooth surface portion of the carrier tape and the electronic component, and reducing the adhesion. Load on the device and operate efficiently.

The sealing tape structure of the present invention comprises an uploading tape and a downloading tape; and the downloading tape has at least one pocket portion arranged along the longitudinal direction of the downloading tape, each pocket portion for accommodating an electronic component. The connecting surface is bonded to the loading belt. The depressed portion is formed from the connecting surface away from the direction of the loading belt. The loading belt has an inner surface facing the download belt, wherein the loading belt has a stop formed on the inner surface, the stop protruding from the inner surface and protruding into the pocket.

In one embodiment, the blocking portion may be formed as at least one rib structure distributed along the longitudinal direction of the download tape. Further, the rib structure may have a small width in a cross-sectional shape along the short side direction of the download tape at a portion close to the capsular portion.

In another embodiment, the blocking portion may be formed as at least one bump structure, which are spaced apart along the longitudinal direction and respectively correspond to the pocket portion of the download tape. Furthermore, the bump structure has a contact surface facing the pocket portion, and the contact surface includes a roughened structure. In various embodiments, the shape of the roughened structure may be a plurality of circular bumps, a plurality of circular pits, a plurality of staggered embossings, a plurality of straight stripes, or a circular hole structure recessed inward from the bump structure.

The cross-sectional shape of the rib structure along the short side direction of the download tape has a small width at a portion close to the pocket portion.

The present invention provides a modified structure for a closure strip. In a preferred embodiment, the sealing strip structure can be used for a surface adhesive sealing strip of a light emitting diode. Can also be used for the packaging of other electronic components.

2 and 3 are respectively a bottom view of the uploading tape 300 of the present invention and a short side cross-sectional view of the sealing tape 100 including the loading tape 300 and the download tape 200. As shown in FIG. 3, the download tape 200 has at least one pocket portion 202 spaced along the longitudinal direction of the download tape 200, and each pocket portion 202 is for accommodating an electronic component 400. As shown in FIG. 3, the pocket portion 202 of the download belt 200 has opposing side walls 204. The download tape 200 has a connection surface 208 on each side of the bag portion 202 that is connected to the inner surface 302 of the upload tape 300, respectively. The tape 200 is downloaded and a recess 206 is formed between the adjacent pocket portions 202 from the connecting surface 208 in a direction away from the loading belt 300. That is, the depressed portion 206 is formed between the bladder portion 202 and the joint surface 208, and is distributed along the longitudinal direction of the download belt 202.

As shown in FIGS. 2 and 3, the loading belt 300 has an inner surface 302 facing the download belt 200, and the loading belt 300 has a stopper portion 304 formed on the inner surface 302, and the stopper portion 304 protrudes from the inner surface 302 and The convex portion 202 is convex. As shown in FIG. 2, in this embodiment, the blocking portion 304 is formed by two elongated rib structures continuously distributed along the longitudinal direction of the loading belt 300, wherein the rib structure has more than one bump. Please also refer to the sectional view of the sealing tape in Figure 3. Figure 3 shows a cross section of the upload tape 300 and the download tape 200 in the short side direction. The material of the carrier tape 300 is usually made of polyethylene terephthalate (PET) and has an antistatic polyester film carrier tape. The inner surface 302 of the loading tape 300 is viscous for bonding to the connecting faces 208 on both sides of the download tape 200. In this embodiment, the stop portion 304 is a rib structure that projects toward the pocket portion 202 of the download tape 200. The rib structure is coated with the hot melt adhesive on the inner surface 302, and further processed by stamping or rolling forming, so that more than one convex rib structure (ie, the stopper portion 304) is formed in the longitudinal direction and has Sufficient thickness.

As shown in FIG. 3, the recessed portion 206 between the connecting surface 208 of the download tape 200 and the both sides of the bag portion 202 is distributed along the longitudinal direction of the download tape 202, and is retracted from the connecting surface 208 toward the direction away from the loading tape 300. . In this embodiment, the retracting height is preferably equal to the thickness of the rib structure (ie, the stopper portion 304) of the loading belt 300, so that the rib structure can be accommodated in the recess portion 206 after the loading belt 300 is bonded to the downloading belt 200. in. In other embodiments, the thickness of the rib structure may also be slightly less than the height at which the recess 206 is retracted. As shown in FIG. 3, the pocket portion 202 of the download tape 200 is for receiving the electronic component 400 with a side wall 204 around the pocket portion 202. In this embodiment, the stopper portion 304 having a rib structure is disposed corresponding to the recess portion 206 of the download tape 200. However, in other embodiments, the blocking portion 304 may also be disposed between the side walls 204.

As shown in FIG. 3, the bonded carrier tape 300 and the recessed portion 206 of the download tape 200, the side wall 204, and the pocket portion 202 together form a closed space. By the rib structure (i.e., the stop portion 304) of the tape 300, the contact area of the inner surface 302 of the carrier tape 300 with the download tape 200 can be reduced. That is, by contacting the bumps of the rib structure with the electronic component 400, not only the contact area of the inner surface 302 of the carrier tape 300 with the electronic component 400 but also the surface of the electronic component 400 can be restricted by the bumps. The displacement of 400, in turn, achieves the efficacy of the fixed electronic component 400. This avoids the problem that the surface of the electronic component 400 adheres to the smooth inner surface of the carrier tape 300 (i.e., the inner surface portion of the non-stop portion 304) when the sealing tape 100 is retracted. When the carrier tape 300 is peeled off during the process, the residual adhesive force of the carrier tape 300 and the electronic component 400 can be reduced, and the adsorption terminal can be used to take out the electronic component 400 from the pocket portion 202 of the download tape 200, thereby reducing the load on the device and Operate efficiently. Further, the provision of the stopper portion 304 has an effect of stably conveying the electronic component 400, and prevents the electronic component 400 from being damaged by vibration during the conveyance. In other embodiments, the rib structure may be designed differently depending on the size of the electronic component 400. For example, designing a single elongated rib structure for the smaller size electronic component 400 corresponds to the download tape 200 along the short side. The above effect can also be achieved by the middle position of the section.

4A and 4B show a modified embodiment of the rib portion 304 of the rib structure, wherein the rib structure may have different shapes along the short side direction of the loading belt 300 to meet different needs. For example, the rib structure in FIG. 3 has a circular arc shape along the short side direction of the loading belt 300. In the embodiment shown in FIG. 4A, the rib structure has a triangular shape along the short side direction of the loading belt 300. . In addition, in the embodiment shown in FIG. 4B, the cross-sectional shape of the rib structure may also be trapezoidal. That is, the rib structure (i.e., the stopper portion 304) may have a small width in a cross-sectional shape in the short-side direction of the download tape 200 at a portion close to the capsular portion 202, further reducing the contact area with the electronic component 400. Here, the number and shape of the rib structures may be differently designed according to the size of the electronic component 400.

It should be noted here that the stopper portion 304 is not limited to the above-described rib structure extending in the longitudinal direction of the loading belt 300. FIG. 5 is a bottom view of another embodiment of the loading belt 300. As shown in FIG. 5, the inner surface 302 of the loading belt 300 has an elongated bump structure as a stopper 304. The bump structures are spaced apart along the longitudinal direction of the upload tape 300 and correspond to the pocket portions 202 of the download tape 200, respectively. In this embodiment, the bump structures are arranged in pairs, and the pair of bump structures are convex toward the same pocket portion 202. Referring to the cross-sectional view of the closure strip 100 of FIG. Figure 6 shows a section along the longitudinal direction of the upload tape 300 and the download tape 200. The inner surface 302 of the loading belt 300 includes a stop portion 304. In this embodiment, the blocking portion 304 is a pair of bump structures that protrude toward the pocket portion 202 of the download belt 200. The bump structure has a thickness formed by a stamping or roll forming process. In this embodiment, the thickness of the bump structure of the upload tape 300 is preferably equal to the height difference between the connection surface 208 of the download tape 200 and the surface of the electronic component 400, so that the bump structure can withstand the electronic component 400 after the upper download tape is bonded. s surface. Thereby, the bump structure stabilizes the electronic component 400 while being in contact with the surface of the electronic component 400 with a small contact area. In other embodiments, the thickness of the bump structure may also be slightly less than the height difference of the connection surface 208 of the download tape 200 to the surface of the electronic component 400. In this embodiment, the cross-sectional shape of the bump structure along the longitudinal direction of the uploading tape 300 is a circular arc shape. However, in other embodiments, the cross-sectional shape of the bump structure along the longitudinal direction of the carrier tape 300 may also have different designs depending on the requirements of the electronic component 400, such as a triangle, a trapezoid, or other geometric shapes or irregularities. As shown in FIG. 6, the stop portion 304 of the bump structure is disposed corresponding to the pocket portion 202 of the download tape 200, and the pair of bump structure positions are located between the side walls 204 of the pocket portion 202. In other embodiments, the stop portion 304 can also be disposed along the long side of the download tape 200 to form a single elongated bump structure corresponding to the intermediate position of the pocket portion 202, as shown in FIG.

Figure 7 shows a cross section of the upload tape 300 and the download tape 200 in the short side direction. The inner surface 302 of the loading belt 300 includes a stop portion 304. In this embodiment, the blocking portion 304 is a bump structure that protrudes toward the pocket portion 202 of the download belt 200. As shown in the cross-sectional view of FIG. 7, the height of the recessed portion 206 retracted from the connecting surface 208 of the download tape 200 is equal to the thickness of the bump structure of the loading tape 300, so that the bump structure can be accommodated in the capsule after the loading tape and the download tape are bonded. The pocket portion 202 is in contact with the surface of the electronic component 400. In other embodiments, the thickness of the bump structure may also be slightly less than the height at which the recess 206 is retracted. The stopper portion 304 of the bump structure is disposed corresponding to the pocket portion 202 of the download tape 200, and has a length between the recess portions 206 of the pocket portion 202.

As shown in FIG. 7, the contact surface 306 of the stop portion 304 (e.g., the bump structure) has a roughened structure 308 thereon. The roughened structure 308 is surface treated by a rolling or embossing process to form an overlay tape 300 having a roughened surface. Thereby, the bump structure is stabilized by the electronic component 400, and the roughened structure is brought into contact with the surface of the electronic component 400 with a small contact area, thereby reducing the chance of adhesion of the upload tape 300 to the surface of the electronic component 400. When the automated device peels off the loading tape 300, the adhesion between the loading tape 300 and the electronic component 400 is lowered to improve the process yield and to produce more efficiently.

An embodiment of a roughened structure 308 is shown in FIG. 8A. In this embodiment, the roughened structure 308 forms a plurality of circular bump arrangements on the contact surface 306. However, in other embodiments, the roughened structure 306 may also form a plurality of circular pit arrays, or alternatively, the circular bumps and the circular pits may be used to form an irregular distribution. In addition, in the embodiment illustrated in Figure 8B, the roughened structure 306 forms a plurality of staggered diagonal embossments. Figure 8C shows a plurality of straight embossed structures. 8D shows a circular opening in which the contact surface 306 of the bump structure is recessed away from the download tape 200; in other embodiments, the number of circular holes can be adjusted to the size of the electronic component 400.

In addition, the stopper portion 304 of the loading belt 300 is not limited to the above-described rib structure extending in the longitudinal direction of the loading belt 300 or the bump structure extending in the short side direction, that is, the stopper portion 304 may be distributed on the loading belt 300. Corresponding to a single or complex discrete bump in the inner surface region of the pocket portion 202 of the download strip 200. That is, the apex of the cross-sectional shape of the stopper portion 304 of the loading belt 300 distributed in the longitudinal direction or the short-side direction (ie, the portion closest to the download tape 200) is along the longitudinal direction and/or the short side direction of the loading belt 300. Connections can be continuous or discontinuous. For example, the blocking portion 304 may be one or a plurality of bump-shaped bumps disposed corresponding to a portion of the side, the middle, or the corner of the surface of the electronic component 400, and the number and distribution of the bumps may follow the electrons. The need for component 400 is adjusted.

The present invention has been described by the above-described related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. Modifications and equivalent arrangements made in accordance with the spirit and principles of the invention are included in the scope of the appended claims.

100. . . Sealing belt

200. . . Download tape

202. . . Pocket part

204. . . Side wall

206. . . Depression

208. . . Connection surface

300. . . Upload belt

302. . . The inner surface

304. . . Stop

306. . . Contact surfaces

308. . . Coarse structure

400. . . Electronic component

Figure 1A is a schematic view of a conventional closure tape;

Figure 1B is a cross-sectional view of a conventional sealing tape;

Figure 2 is a bottom view of the loading belt;

Figure 3 is a short side cross-sectional view showing an embodiment of the sealing tape of the present invention;

4A and 4B are schematic views of different embodiments of a rib structure;

Figure 5 is a bottom view of another embodiment of the loading belt;

Figure 6 is a long side cross-sectional view showing another embodiment of the sealing tape of the present invention;

Figure 7 is a schematic view showing an embodiment of a sealing belt having a roughened structure;

8A-8D are schematic views of different embodiments of a roughened structure.

100. . . Sealing belt

200. . . Download tape

202. . . Pocket part

204. . . Side wall

206. . . Depression

208. . . Connection surface

300. . . Upload belt

302. . . The inner surface

304. . . Stop

400. . . Electronic component

Claims (14)

A sealing tape for loading at least one electronic component, comprising: a downloading tape having at least one pocket portion spaced along a longitudinal direction of the downloading tape, each pocket portion for accommodating an electronic component; and an uploading a belt having an inner surface facing the download belt; wherein the loading belt has a stop formed on the inner surface; the stop protrudes from the inner surface and protrudes into the pocket portion, wherein the belt Each of the two sides of the downloading belt portion has a connecting surface respectively connected to the inner surface of the loading belt; the downloading belt is formed with a recessed portion between the adjacent pocket portions from the connecting surface away from the carrying belt The direction is retracted, and the stopper is housed in the recess. The closure strip of claim 1, wherein the pocket portion has opposite side walls, the stop portion being located between the two side walls. The sealing tape of claim 1, wherein the blocking portion is formed as at least one rib structure, the rib structures are distributed along a longitudinal direction of the download tape, and the rib structure is received in the recessed portion in. The sealing tape according to claim 3, wherein the rib structure has a small width in a cross-sectional shape along a short side direction of the downloading tape at a portion close to the capsular portion. The sealing tape of claim 1, wherein the blocking portion is formed as at least one bump structure, and the at least one bump structure is spaced along the long side direction and respectively corresponding to the pockets of the download tape unit. The sealing tape of claim 5, wherein the bump structures are arranged in pairs, in pairs The bump structure is convex toward the same pocket portion. The sealing tape of claim 6, wherein the bump structure is formed in an elongated shape and distributed in a direction transverse to a long side of the download tape. The closure strip of claim 5, wherein the bump structure has a contact surface toward the pocket portion, the contact surface comprising a roughened structure. The sealing tape of claim 8, wherein the roughened structure has a shape of a plurality of circular bumps. The sealing tape of claim 8, wherein the roughened structure has a plurality of circular pits. The closure tape of claim 8, wherein the roughened structure has a plurality of staggered embossments. The sealing tape of claim 8, wherein the roughened structure has a plurality of straight stripes. The sealing tape of claim 8, wherein the roughened structure has a circular hole structure, and the circular hole structure is concave from the convex structure. The sealing tape of claim 1, wherein the blocking portion of the inner surface of the loading belt is a plurality of discrete bumps, and the plurality of discrete bumps are distributed along a long side or a short side of the loading belt. And protruding into the pocket portion of the download tape.