Patent Application
20180050366
This application claims priority to Taiwan Patent Application No. 105126788, filed Aug. 22, 2016, the disclosure of which is incorporated herein by reference in its entirety.
The present disclosure relates to production of materials control, and more particularly to a system and method for preventing overflow of adhesive, which is beneficial to production of brightness enhancement films.
A conventional process for production of brightness enhancement films is a continuous roll-to-roll process. The continuous roll-to-roll process comprises embossing and curing a polyethylene terephthalate (PET) film with ultraviolet curable adhesive (UV adhesive), thus producing a brightness enhancement film having microstructures. However, a UV adhesive overflow on the PET film is difficult to prevent.
Many aspects of the disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein. However, it will be understood by those of ordinary skill in the art that the exemplary embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the exemplary embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
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In the present exemplary embodiment, the detection unit 12 includes two inner laser light sensors and two outer laser light sensors. One inner laser light sensor and one outer laser light sensor are mounted on one side 251 of the PET film 25, and the other inner laser light sensor and the other outer laser light sensor are mounted on the other side 251 of the PET film 25. The two inner laser light sensors are configured to respectively detect whether the UV adhesive on the PET film 25 flows to the two inner limit lines 253, and the two outer laser light sensor are configured to respectively detect whether the UV adhesive on the PET film 25 flows to the two outer limit lines 254. Either of the inner laser light sensors can generate the auxiliary trigger signal upon detecting that the UV adhesive on the PET film 25 flows to the inner limit line 253, and then transmit the auxiliary trigger signal to the processing unit 13. Either of the outer laser light sensors can generate the main trigger signal upon detecting that the UV adhesive on the PET film 25 flows to the outer limit line 254, and then transmit the main trigger signal to the processing unit 13.
With reference to
In step 401, the detection unit 12 detects whether the UV adhesive on the PET film 25 flows to the inner limit lines 253. If yes, step 402 is executed, otherwise the step 401 is executed.
In step 402, the detection unit 12 generates the auxiliary trigger signal, and transmits the auxiliary trigger signal to the processing unit 13.
In step 403, the processing unit 13 triggers an alarm upon receiving the auxiliary trigger signal from the detection unit 12.
In step 404, the detection unit 12 detects whether the UV adhesive on the PET film 25 flows to the outer limit lines 254. If yes, step 405 is executed, otherwise the step 404 is executed.
In step 405, the detection unit 12 generates the main trigger signal, and transmits the main trigger signal to the processing unit 13.
In step 406, the processing unit 13 controls the drive unit 11 to accelerate the rotational speed of the guide roller 24 upon receiving the main trigger signal from the detection unit 12, so as to accelerate the moving speed of the PET film 25. The processing unit 13 also controls the gumming device 21 to reduce the amount of the UV adhesive applied to the PET film 25 upon receiving the main trigger signal from the detection unit 12.
The exemplary embodiments shown and described above are only examples. Many details are often found in the art such as the other features of a system and method for preventing overflow of adhesive. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, especially in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the exemplary embodiments described above may be modified within the scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 105126788 | Aug 2016 | TW | national |
