JP3019374U - Separator - Google Patents

Abstract

(57) [Abstract] [Purpose] It is intended to provide a separator for preventing an adhesive, which is extruded by pressure, from adhering to an adjacent laminated wood during the production of the laminated wood. [Structure] Two composite paperboards 4 are prepared by adhering a polyolefin resin film 1 and a paperboard 3 with an adhesive polyolefinic resin 2, and the surface of the polyolefin resin film 1 is placed outside, and the surface of the paperboard 3 is adhered. It is a separator that is formed by bonding an intermediate paperboard 5 between the paperboards 3 and 3 and bending it at a right angle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a separator for preventing blocking, which is mainly used in the production of laminated wood.To prevent the adhesive from sticking to each other due to the adhesive that sticks out during the pressure / bonding process during the manufacturing of laminated wood. In addition to being used as a separator plate for sandwiching each laminated lumber, it also intends to provide a spacer that can be used as a spacer when laying undried wood etc. coated with an adhesive.

[0002]

[Prior art]

 To manufacture laminated wood, for example, 5 sheets of lamina with a thickness of 20 mm and a width of 100 mm are laminated and pressed with an adhesive to produce a single prism. , 30 to 50 or more are produced by pressing once. At this time, it is necessary to sandwich the separator between the glued timbers so that they do not adhere to each other due to the adhesive protruding due to pressure. Conventionally, as this separator, a right angle made of zinc-iron plate is placed on each laminated wood so as to cover the upper surface and one side surface, and then arranged side by side. Then, pressure is applied from the left and right sides first and then from the top and bottom sides, and after the adhesive has sufficiently solidified, the pressure is released, and the work of releasing the laminated wood one by one is performed. This disassembling / releasing operation requires a considerable amount of work and time because the laminated wood and the zinc-iron plate are fixed together with an adhesive.

[0003]

[Problems to be solved by the device]

 In the manufacturing process of laminated wood described above, most of the adhesive coating, laminating, transferring, and pressure bonding to the lamina are mechanized, but the disassembly and release work is all done manually. At this time, the separator and the laminated wood are firmly adhered with an adhesive, and it takes a lot of time to disassemble, and the adhesive is solidified and adhered to the surface of the removed separator. Therefore, it is necessary to remove and clean them.

Further, in recent years, since adhesives have advanced and many fast and strong adhesives have been used, disassembling / releasing work has become more difficult. With galvanized iron separators, the limits of manual labor have come. Under these circumstances, in order to improve work efficiency, a small amount of separator that does not firmly adhere to the adhesive is required.

[0005]

[Means for solving problems]

 The present invention has been made to solve the above-mentioned problems, and as the material of the first layer on the surface, a polyolefin-based resin film having no molecular polarity and no adhesive is used is used. As the second layer, a polyolefin copolymer resin for the purpose of adhering the polyolefin resin film on the surface and the paperboard of the third layer was used. For the third layer, a paper tube base paper or a corrugated board base paper having a thickness of about 0.2 mm to 0.5 mm was used in consideration of appropriate lightness and strength. As the intermediate layer, the same number of paperboards as in the third layer were used by stacking the required number of sheets according to the strength, waist, thickness, etc. required for the paper angle. By using such a material and laminating it with an adhesive, and drying and fixing it while bending it at 90 degrees, a separator having no adhesive on its surface is manufactured.

[0006]

[Action]

 Since the polyolefin resin film used as the first layer film on the surface is a non-polar resin, it has the property that the adhesive does not stick at all even if the release agent is not applied. Therefore, even if the adhesive between the lamina is completely solidified in the pressing / bonding process, the separator can be easily disassembled and released, and when dismantled, all solidified adhesive remains on the wood side, It rarely adheres to the separator. Therefore, there is no need to clean the separator at all. The second layer polyolefin-based copolymer resin functions as an adhesive that firmly bonds the first layer polyolefin-based resin film to the third layer paperboard. The paperboard used for the third layer is lighter in weight than conventional zinc-iron plates, yet is flexible and easy to handle. Furthermore, since the paperboard also has some cushioning properties, it has a function of appropriately accommodating even a slight unevenness in the height and width of the laminated laminated wood and averaging the pressurization.

[0007]

【Example】

 A 50 μm thick polypropylene film ZC-50 made by Showa Denko KK was used as the first layer film 1 on the surface, and a commercial paper tube base paper having a thickness of 0.8 mm was used as the third layer paperboard 3. Using a resin for extrusion laminating, a modified polypropylene resin ER-420L manufactured by Showa Denko KK as the adhesive 2 of the second layer, the polypropylene film of the first layer and the paperboard of the third layer at a temperature of 280 ° C. and a film thickness of 30 μm. A composite paperboard 4 having a three-layer structure was manufactured by pressing with a pressure roll and a cooling roll while discharging between the two.

Next, two composite paperboards are coated with an adhesive so that the first layer polypropylene film is on the outside and the third layer paper tube base paper is on the inside. , Bent through a right-angle forming machine, each side width is 80 mm, thickness 1. A 6 mm separator was obtained.

In a second embodiment, a polypropylene film ZC-50 manufactured by Showa Denko K.K. Co., Ltd. having a thickness of 50 μm is used as the film of the first layer on the surface, and the paperboard 3 of the third layer is manufactured by Fukuyama Paper Co., Ltd. The corrugated cardboard base paper FNN-B2 having a thickness of 0.5 mm is used. As the adhesive 2 for the second layer, a resin for extrusion lamination, a modified polypropylene resin ER-420L manufactured by Showa Denko KK is used, and the temperature is 280 ° C. and the film thickness is A composite paperboard 4 having a three-layered structure was produced by pressing between a polypropylene film of the first layer and a paperboard of the third layer at a pressure of 30 μm and pressing with a pressure roll and a cooling roll.

Next, as a paperboard 5 for the remaining intermediate layer, corrugated cardboard base paper FN N-B2 manufactured by Fukuyama Paper Co., Ltd. is slit into a width of 240 mm and a thickness of 0.5 mm is coated with an adhesive, and four sheets are stacked. , The two sides of the composite paperboard 4 of the same width, which had been previously manufactured, are superposed on each other with an adhesive and passed through a right-angle forming machine. The bending width is 120 mm, the thickness is about 3 mm, and the polyolefin-based material is on both sides. A separator with resin was obtained.

As a third embodiment, a polypropylene film having a thickness of 30 μ is used as the film 1 of the first layer on the surface, and as the paperboard 3, a commercially available paper tube base paper having a thickness of 0.5 mm is used. A composite paperboard 4 was manufactured in the same manner as in the first embodiment, and then, as a paperboard 5 for the intermediate layer, a stack of three commercially available paper tube base papers having a thickness of 0.5 mm was placed on a right-angle forming machine. Then, a separator having a bending width of 40 mm and a thickness of 2.5 mm was obtained.

[0012]

[Effect of device]

 When the product of the present invention manufactured as described above was used for manufacturing laminated wood, the adhesive was completely solidified and then disassembled, but the adhesive did not adhere to the separator at all, and disassembly was very easy. Not only can it be done, it is easy to handle because the separator is light and flexible, and the surface of the separator is clean of the adhesive, eliminating the need for cleaning. As a result, the dismantling work of one block, which was conventionally done by two workers in 30 minutes, took less than 10 minutes by one person, resulting in a significant improvement in production efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a separator of the present invention.

FIG. 2 is a perspective view showing another embodiment of the separator of the present invention.

FIG. 3 is a cross-sectional view of a composite paperboard used in the separator of the present invention.

[Explanation of symbols]

 1 Polyolefin resin film of the first layer 2 Adhesive polyolefin resin of the second layer 3 Paperboard of the third layer 4 Composite paperboard 5 Paperboard of the intermediate layer

Claims (2)

[Scope of utility model registration request] 1. A composite paperboard comprising a polyolefin resin film and a paperboard adhered to the surface of the polyolefin resin film with an adhesive polyolefin resin interposed therebetween. A separator having a predetermined length formed at a right angle with a bending width of 20 mm to 200 mm on one side. 2. The separator according to claim 1, wherein one or a plurality of intermediate paperboards are bonded between two paperboards.