Patent Abstract:
Disclosed is a sheet winder which enables a sheet roll paper wound in a roll shape to be used in manufacturing of a corrugated cardboard for packing cases, in which the sheet roll paper is obtained by laminating sheet papers printed one by one using a lithography technique as one of the most general and economical printing methods and a roll paper used as a material for manufacturing the corrugated cardboard for packing cases.

Full Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of Korean Patent Application No. 10-2011-0044782, filed May 12, 2011, the disclosure of which is hereby incorporated herein by reference in its entirety. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     An aspect of the present invention relates to a sheet winder which enables a sheet roll paper wound in a roll shape to be used in manufacturing of a corrugated cardboard for packing cases, in which the sheet roll paper is obtained by laminating sheet papers printed one by one using a lithography technique as one of the most general and economical printing methods and a roll paper used as a material for manufacturing the corrugated cardboard for packing cases. 
     2. Description of the Related Art 
     With the development of technologies and the improvement of income levels, large-sized electronic products such as a flat panel television, a refrigerator and a washing machine are sold in large quantities, and accordingly, the use of large-sized packing boxes for safety delivery of the large-sized electronic products are increased. 
     A corrugated cardboard which is light, cheap and strong is used as a material of the packing boxes. However, one-color characters or figures are printed on a yellow surface of the corrugated cardboard, which degrades the dignity of high-quality electronic products to be packed. 
     Therefore, the high quality of packing boxes is pursued by manufacturing packing boxes using a corrugated cardboard and separately attaching a high-quality sheet paper printed with highly designed characters and figures to a surface of each of the packing boxes so as to improve the quality of products to be packed. 
     However, since a separate attaching process is added to the manufacturing method of packing boxes, productivity is deteriorated and manufacturing cost is considerably increased. Therefore, efficient packing operations are not performed in large quantities. 
     SUMMARY OF THE INVENTION 
     Embodiments of the present invention provide a sheet winder which processes a sheet roll paper obtained by laminating a sheet paper printed with highly designed characters and figures and a roll paper as a material of a corrugated cardboard and then winding the sheet roll paper to be used as a material of packing boxes for electronic products, thereby manufacturing the corrugated cardboard for packing boxes suitable for the dignity of high-quality electronic products. 
     According to an aspect of the present invention, there is provided a sheet winder for winding a sheet as a material of a packing box, wherein sheet papers printed with characters and figures are supplied from a sheet paper supply part to a laminating part; a roll paper supplied from a roll paper supply part is preheated by a first preheating roll and supplied to an adhesive coating part; the roll paper coated with an adhesive by an adhesive coating roll in the adhesive coating part is preheated by a second preheating roller and supplied to the laminating part; the sheet papers and the roll paper are laminated as a sheet roll paper while passing between a laminating roll and an auxiliary laminating roll in the laminating part; the sheet roll paper is dried while passing through an infrared drying part in which infrared light is irradiated by an infrared lamp and a heating roll drying part in which heat is radiated by a heating roll; the sheet roll paper is cooled while passing through a cooling part having a cooling fan, and wound in a winding part; a cleaning roll transfers a cleaning solution of a cleaning solution container to the laminating roll so that the laminating roll is cleaned, and a scraper scrapes the cleaning solution on an outer circumferential surface of the laminating roll; and a scraper cleaning roll transfers the cleaning solution stored in the cleaning solution container to the scraper so that the scraper is cleaned. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and/or other aspects and advantages of the invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which: 
         FIG. 1  is a view illustrating a sheet winder for winding a sheet roll paper produced by laminating a sheet paper and a roll paper according to an embodiment of the present invention; and 
         FIG. 2  is a view illustrating an adhesive coating part and a lamination part, constituting the sheet winder according to the embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the present invention are shown. This present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure is thorough, and will fully convey the scope of the present invention to those skilled in the art. 
     The configuration of a sheet winder according to an embodiment of the present invention will be described in detail with reference to  FIGS. 1 and 2 . 
     The sheet winder according to the embodiment of the present invention is configured to wind a sheet roll paper  10  obtained by laminating high-quality sheet papers  32  each printed with highly designed characters and figures and a roll paper  34  for manufacturing a corrugated cardboard as a material of packing boxes. 
     The sheet winder is configured to include a sheet paper supply part  31 , a roll paper supply part  33 , an adhesive coating part  14 , a laminating part  20 , an infrared drying part  36  and a heating roll drying part  39 , a cooling part  40  and a winding part  43 , which are sequentially disposed. The sheet paper supply part  31  sequentially supplies the laminated sheet papers  32 . The roll paper supply part  33  continuously supplies the roll paper  34 . The adhesive coating part  14  coats an adhesive  35  on the roll paper  34 . The laminating part  20  laminates, as the sheet roll paper  10 , the roll paper  34  coated with the adhesive  35  and the supplied sheet papers  32 . The infrared drying part  36  and the heating roll drying part  39  dry the adhesive  35  between the sheet papers  32  and the roll paper  34 . The cooling part  40  cools the sheet roll paper  10  of which temperature is increased in the drying process. The winding part  43  winds the cooled sheet roll paper  10  to be used as the corrugated cardboard for packing boxes. 
     The main components of the sheet winder are a first preheating roll  13 , the adhesive coating part  14 , a second preheating roll  17  and the infrared drying part  36 . The first preheating roller  13  preheats the roll paper  34  continuously supplied from the roll paper supply part  33  under the guidance of a guide roll  12 , and the adhesive  35  coating part  14  thinly coats the adhesive on the roll paper  34  preheated by the first preheating roll  13 . Then, the second preheating roll  17  preheats the roll paper  34  coated with the adhesive  35  once again, and the sheet roll paper  10  obtained by laminating the roll paper  34  transferred while being coated with the adhesive  35  and the sheet papers  32  supplied from the sheet paper supply part  31  is transferred to the infrared drying part  36 . 
     The laminating process will be described in detail. The first preheating roll  13  primarily preheats the roll paper  34  when the roll paper  34  is transferred while coming in contact with the first preheating roll  13 . The preheating helps the adhesive  35  coated on the roll paper  34  not to be formed as a lump but to be uniformly coated. 
     The adhesive coating part  14  is configured to include an adhesive coating roll  15  and an auxiliary adhesive coating roll  16 . The adhesive coating roll  15  transfers the adhesive  35  stored in an adhesive container  19  to the roll paper  34  so that the adhesive  35  is thinly coated on the roll paper  34  when the roll paper  34  is transferred. The auxiliary adhesive coating roll  16  transfers the roll paper  34  while rotating in engagement with the adhesive coating roll  15 . 
     The second preheating roll  17  preheats the roll paper  34  coated with the adhesive  35  once again. Thus, the adhesion of the adhesive  35  coated on the roll paper  34  is increased by the preheating. 
     The laminating part  20  is configured so that the sheet papers  32  supplied from the sheet paper supply part  31  and the roll paper  34  transferred while being coated with the adhesive  35  by the adhesive coating part  14  are laminated as the sheet roll paper  10  by being contacted and pressed together while passing between a laminating roll  21  and an auxiliary laminating roll  22 . 
     In this case, a cleaning roll  23  cleans the adhesive  35  stuck to the laminating roll  21  in the laminating process by transferring a cleaning solution stored in a cleaning solution container  25  while rotating in engagement with the laminating roll  21 , and a scraper  24  comes in contact with an outer circumferential surface of the laminating roll  21  so as to scrape the cleaning solution transferred to the laminating roll  21 . 
     A scraper cleaning roll  26  allows the adhesive  35  stuck to the scraper  24  to be cleaned with the cleaning solution by transferring the cleaning solution stored in the cleaning solution container  25  to the scraper  24  while rotating in contact with the scraper  24 . 
     The operating method of the sheet winder according to the embodiment of the present invention configured as described above will be described as follows. 
     The high-quality sheet papers  32  printed with highly designed characters and figures are stacked in the sheet paper supply part  31 , and the staked sheet papers  32  are sequentially transferred to the laminating part  20 . 
     The roll paper  34  for manufacturing a corrugated cardboard, which is wound in the roll paper supply part  33 , is preheated by heat of the first preheating roller  13  while being transferred to the first preheating roller  13  under the guidance of the guide roll  12 , and then transferred to the adhesive coating part  14 . 
     The primarily preheated roll paper  34  is thinly coated with the adhesive  35  stored in the adhesive container  19 , which is transferred to the adhesive coating roll  15  while passing between the adhesive coating roll  15  and the auxiliary adhesive coating roll  16  in the adhesive coating part  14 , and then secondarily preheated while passing through the second preheating roll  17 . The secondarily preheated roll paper  34  is transferred to the laminating part  20 . 
     The roll paper  34  preheated and transferred while being coated with the adhesive  35  and the sheet papers  32  supplied from the sheet paper supply part  31  are adhered to each other by the adhesive  35  by being pressed and laminated together while passing between the laminating roll  21  and the auxiliary laminating roll  22  in the laminating part  20 , so that the laminated paper is processed as the sheet roll paper  10 . Then, the sheet roll paper  10  is transferred to the infrared drying part  36 . 
     In this case, a part of the adhesive  35  may be leaked and stuck to the laminating roll  21  when the roll paper  34  and the sheet papers  32 , passing between the laminating roll  21  and the auxiliary laminating roll  22 , are adhered to each other by the adhesive  35 . 
     The cleaning solution stored in the cleaning solution container  25  is transferred to the laminating roll  21  by the cleaning roll rotating in the engagement with the laminating roll  21  so as to clean the adhesive  35  stuck to the laminating roll  21 , and the cleaning solution transferred to the laminating roll  21  is scraped by the scraper  24 . 
     Simultaneously, the adhesive  35  stuck to the scraper  24  is cleaned with the cleaning solution by the scraper cleaning roll  26  transferring the cleaning solution stored in the cleaning solution container  25  while rotating in contact with the scraper  24 . 
     The adhesive  35  is completely dried when the sheet roll paper  10  obtained by laminating the sheet papers  32  and the roll paper  34  using the laminating part  20  passes through the infrared drying part  36  in which infrared light is irradiated by an infrared lamp and the heating roll drying part  39  in which heat is radiated by a heating roll  44 . Then, the heated sheet roll paper  10  is again cooled while passing through the cooling part  40  having a cooling fan, and then wound in the winding part  43 . 
     The sheet roll paper  10  wound as described above is used as a material of the corrugated cardboard for manufacturing packing boxes for electronic products. 
     According to the present invention, a sheet rolling paper obtained by laminating a roll paper for manufacturing a corrugated cardboard, which is used as a material of packing boxes, and high-quality sheet papers printed with highly designed characters and figures are wound to be used in manufacturing of the corrugated cardboard of packing boxes for electronic products, and the corrugated cardboard for packing boxes of electronic products is processed using the wound sheet roll paper, thereby manufacturing the packing boxes for electronic products. Accordingly, it is possible to improve the dignity of high-quality electronic products. 
     Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Technology Classification (CPC): 1