JP2002363514A - Production method for pressure-sensitive adhesive sheet with release paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method for a pressure-sensitive adhesive sheet with release paper whereby limited production of a wide variety of goods is made possible at a low cost. SOLUTION: This production method comprises the first step of producing a release-paper-stuck film 40 by forming a pressuresensitive adhesive layer 20 on the back side 12 of a first release paper 10 and sticking the back side 32 of a second release paper 30 to the pressure-sensitive adhesive layer 20 of the first release paper 10; the second step of producing a small-width release- paper-stuck film 400 by slitting the release-paper-stuck film 40 into a specified width and winding up the slit film; and the third step of producing a sheet 60 by releasing the second release paper 30 from the small-width release-paper- stuck film 400, sticking a surface film 50 having the same width thereto, and cutting to a sheet length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an adhesive sheet with a release paper (the release paper and the sheet are made of paper or synthetic resin of a finishing size such as A4 or B4).

[0002]

2. Description of the Related Art In addition to word sheets, laser printers, ink jets, etc., various types of pressure-sensitive adhesive sheets with release paper of the above-mentioned finish sizes are commercially available, such as labels of various sizes, cuts for imposition, and the like. Items of that type tend to increase further. Conventionally, these types have a wide width (approximately 42
Adhesion to a long paper (about 1000 m to about 6000 m) long paper (including a synthetic resin film) or a release paper (including a synthetic resin film) on the back side of a long roll (from 0 mm to about 1650 mm). After processing and drying the adhesive layer in a drying oven, the same wide and long rolled release paper (including synthetic resin film) or surface paper (including synthetic resin film) as described above is continuously used. , And about 6,500 or more pressure-sensitive adhesive sheets with release paper were produced in A4 size conversion. Now, if it is desired to select 10 sheets of cut paper as imposition cut paper in addition to uncut paper as an A4 size item, the uncut paper and the imposition cut paper should be approximately 32 pieces each.
Although it is possible to divide the sheet into 50 sheets, it is not always the case that uncut paper and imposition cut paper are always ordered at the same time. It is necessary to store the rolls before cutting work, and if this storage period is long, the finished sheet will have a curl after the next cutting work, and the appearance will be poor. The negative effects come out. This curl can be usually improved by adding one step by a method of curl correction (peeling off and re-attaching), but the workability and yield are poor, so the cost increases. In addition, in such a production method, even if a product is planned to be developed in a small quantity and a large variety in response to recent needs, at least 6,500 pieces must be produced at a time for each item as described above. Instead, a huge investment is required. The inventor of the present invention has found a manufacturing method for continuously producing products having a large number of finished sheet sizes from wide and long surface paper and release paper per lot, and has completed the present invention.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a pressure-sensitive adhesive sheet with release paper, which enables low-cost multi-product development at low cost.

[0004]

According to the method of the present invention for producing a pressure-sensitive adhesive sheet with a release paper, an adhesive layer 20 is formed on a back surface 12 of a first release paper 10 to achieve the above object. A first step of producing a release paper laminated film 40 by adhering the back surface 32 of the second release paper 30 to the adhesive layer 20 of the first release paper 10, and slitting the release paper laminated film 40 to a predetermined width; The second release paper 30 from the small width release paper laminated film 400 to the second step of manufacturing the narrow width release paper laminated film 400.
And a third step of manufacturing the sheet 60 by peeling the sheet film and adhering the surface film 50 having the same width to cut the sheet film into a sheet length. In the present invention, the second release paper is made of a material that can be more easily peeled off from the adhesive layer than the first release paper, or even if the same material is used, the second release paper is more easily peeled off than the surface treatment of the first release paper. It is preferable that the second release paper be easily peeled off from the adhesive layer in the third step. In the third step, the surface film is preferably subjected to an easy-adhesion treatment such as corona discharge machining or resin coating to make the surface film easily adhere to the adhesive layer. Further, in the third step, the bonding of the surface film and the adhesive layer is performed by using a sponge-like roll on the bonding roll on the surface film side in order to prevent intrusion of bubbles and generation of wrinkles. It is desirable to perform processing such as pressure bonding to a bonding roll on the release paper side using a hot roll at 40 ° C to 180 ° C.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. The method for producing a pressure-sensitive adhesive sheet with release paper according to an embodiment of the present invention includes a first step, a second step, and a third step. In the first step, as shown in FIG. 1, a matte film and a silicon treatment are applied to a back surface 12 of a pet film having a thickness of 75 mm, a width of 1100 mm, and a length of 5000 m. The resin-based adhesive is glued by the gluing tank 200, and the adhesive layer 2
0 through a drying furnace 70, the back surface 3 of the second release paper 30 which has been subjected to a silicon treatment of a pet film having a thickness of 75 mm.
2 and wound up as a release paper bonding film 40. In the second step, the release paper laminating film 40 wound in the first step is unwound, and the slitter blade 8 is used.
0, the sheet is cut every 220 millimeters in width and wound up as a small-width release paper-bonded film 400.
The third step is to unwind the small release paper bonding film 400 having a width of 220 millimeters wound in the second step, and to peel off the second release paper 30 and wind it, and then to form a 220 mm surface film. 50 and then 297 in the flow direction with a width of 210 mm
The sheet is cut with a cutter 90 for each millimeter length to form an A4 adhesive sheet 60 with release paper. Note that additional work such as printing and imposition cutting is performed before sheet cutting. In this way, it is possible to manufacture 100 or 1000 adhesive sheets with release paper of various A4 items.

[0006]

According to the present invention, all the rolls of a unit lot having a wide width and a long length are finished to the sheet size without storing the rolls in a roll, so that the curl when the rolls are stored in a roll for a long time is obtained. In addition to solving the shortcomings caused by the occurrence, it was possible to develop products with sheet finishing of small lots and many types of products, making it possible to increase the efficiency of investment funds.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first step of the present invention.

FIG. 2 is an explanatory view showing a second step of the present invention.

FIG. 3 is an explanatory view showing a third step of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 1st release paper 12 1st release paper back surface 20 Adhesive layer 30 2nd release paper 32 2nd release paper back surface 40 Release paper bonding film 400 Narrow release paper bonding film 50 Surface film 60 sheet

Claims (1)

[Claims] An adhesive layer (20) is formed on a back surface (12) of a first release paper (10).
A first step of manufacturing a release paper bonding film 40 by adhering the back surface 32 of the second release paper 30 to the adhesive layer 20 of the first release paper 10, and the release paper bonding film 40. And a second step of manufacturing a small-width release paper-bonded film 400 by slitting it into a predetermined width,
The release film 30 is peeled off and the surface film 5 having the same width is removed.
A method for producing a pressure-sensitive adhesive sheet with release paper, comprising the steps of: