JPS6024594U

JPS6024594U - drawing board

Info

Publication number: JPS6024594U
Application number: JP11504183U
Authority: JP
Inventors: 中垣　明徳
Original assignee: 日本紙パルプ商事株式会社
Priority date: 1983-07-26
Filing date: 1983-07-26
Publication date: 1985-02-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は画板の平面図、第２図は第１図のＡ−Ａ線によ
る部分拡大図、イは従来の画板、川よ本考案の画板。第
３図は本案画板の製造の概要を示す図である。第２図の
口において、２２は表面紙、２３は熱可塑性樹脂フィル
ム、２４は耐水性貼合原紙、２５は樹脂を含浸させた強
化中芯原紙であり、２６は接着線である。第３図におい
てイは第１工程、川よ第２工程を示し、イにおいて、１
２２は表面紙２２を巻いた原料ロール、１２４は耐水性
貼合原紙２４を巻いた原料ロール、１２３はポリエチレ
ン樹脂の溶融押出機であり、Ａ、　Ａ’は圧着ロールで
ある。１２７は表面紙の裏面２２と、耐水性貼合原紙２
４とをポリエチレン２３薄層で融着した材料２７を巻き
取った次工程用の原料ロール、口において、１２５は樹
脂を含浸させた強化中芯原紙２５を巻いた原料ロールで
、２本の原料ロール１２７の間に置かれ、誘導ロールａ
、　ｂより樹脂含浸槽１２９内に導き、抱合型付ロール
１２８の間を通った後案内ロールＢ、　Ｂ’の間で適度
に圧着される。Fig. 1 is a plan view of the drawing board, Fig. 2 is a partially enlarged view taken along line A-A in Fig. 1, A is a conventional drawing board, and Kawayo, the drawing board of this invention. FIG. 3 is a diagram showing an outline of manufacturing of the drawing board according to the present invention. In the opening of FIG. 2, 22 is a surface paper, 23 is a thermoplastic resin film, 24 is a water-resistant laminated base paper, 25 is a reinforcing core base paper impregnated with resin, and 26 is an adhesive line. In Figure 3, A indicates the first step, and the river indicates the second step.
22 is a raw material roll wrapped with surface paper 22, 124 is a raw material roll wrapped with water-resistant lamination base paper 24, 123 is a polyethylene resin melt extruder, and A and A' are pressure rolls. 127 is the back side 22 of the front paper and the water-resistant laminated base paper 2
At the mouth, 125 is a raw material roll wound with reinforced core base paper 25 impregnated with resin, and 125 is a raw material roll for the next process which is wound with a material 27 made by fusing 4 and 23 with a thin layer of polyethylene. placed between the rolls 127 and guided roll a
, b into the resin impregnation tank 129, and after passing between the conjugated molded rolls 128, is suitably pressed between the guide rolls B and B'.

Claims

[Scope of claim for utility model registration] is) Two types of surface paper selected from pure white roll paper, unbleached kraft paper, bleached kraft paper, etc., and water-resistant laminated base paper fused together with a thin film of thermoplastic resin. A drawing board made by bonding each laminated base paper side of the laminate to a cardboard shape using reinforced core base paper impregnated with resin in advance. (2) The weight of the surface paper is 30 to 65 for pure white roll paper.
g/rrl, 50-120 g/rr for unbleached kraft paper
B. The bleached kraft paper has a weight of 50 to 1209 Zrrt, and the weight of the water-resistant laminated base paper is 370 to 517 g/ly.
(3) The drawing board according to claim 1 of the utility model registration claim, in which the thermoplastic resin for fusing is polyethylene resin or resin (PE). (4) The drawing board according to claim 1, wherein the resin impregnated into the reinforced core base paper is selected from polyolefin resins, polystyrene resins, and epoxy resins.