JP2003094217A - Fitting plate for drilling and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting plate for drilling and the manufacturing method, which reduce a friction generated between a drill and a plate work such as a printing board, radiate the generated friction heat immediately and reduce pollution on the products and manufacturing environment. SOLUTION: The fitting plate for drilling is constituted by putting laminated paper made of pulp between aluminum foil layers through water-soluble polymer layers, and the manufacturing method for the fitting plate for drilling is constituted by laminating water-soluble polymer sheet and aluminum foil layers in the order on both the surfaces of the laminated paper made of pulp and by bonding them with the heat-bonding technique.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated laminate for double-sided or multilayer printed wiring boards and a laminate for use in jigs and tools,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a perforating plate used when perforating a plate to be processed such as a plastic plate, and a manufacturing method thereof. In particular, it relates to a punching plate which can be used as a lower plate placed on the lower surface of a plate to be processed, and a manufacturing method thereof.

[0002]

2. Description of the Related Art When a through hole such as a through hole is formed in a work piece such as a copper clad laminate for double-sided or multilayer printed wiring boards, a laminate used for jigs and tools, a plastic plate, etc.
There is a problem that a burr is generated at the edge of the through hole or the resin constituting a part of the plate to be processed is softened by frictional heat generated by high speed rotation of the drill and the hole is closed. There is also a problem that the wall surface of a through hole such as a through hole is roughened due to friction with a drill and a chip such as softened resin or metal piece.

In order to prevent problems due to burrs and frictional heat, generally, a backing plate is arranged above and below this plate to be perforated. An aluminum foil, for example, can be used as the upper cover plate arranged on the upper surface of the plate to be processed.
This aluminum foil can dissipate frictional heat and prevent resin softening due to its excellent heat dissipation.

Phenol laminates, paper epoxy resin plates, fiber boards, etc. are used as the lower backing plate to be placed on the lower surface of the plate to be processed. Cannot be dissipated. Therefore, the resin of the plate to be processed may soften and block the holes. In order to prevent such blockage of holes, in JP-A-5-208398, an aluminum foil is attached to a cardboard, and the aluminum foil side is in contact with the lower surface of a printed wiring board which is a work board. A method of making a hole is disclosed. However, with the backing plate having such a configuration, it is not possible to prevent the wall surface of the hole from being roughened due to friction with the drill.

The roughening of the wall surface of the hole can be suppressed by reducing the frictional force at the time of drilling. For example,
A method of using a sheet in which a water-soluble polymer that is a lubricant is provided on an aluminum foil or a plastic plate as an upper cover plate is disclosed in Japanese Patent Nos. 2855818, 2855819 and 2855.
No. 820, No. 2858521, No. 2855522,
No. 2,855,823 and No. 2,855,824.

[0006] Such a backing plate has a problem that it becomes sticky and its long-term storability is low because the lubricant has a water absorbing property. In addition, when drilling is performed using this upper backing plate, the lubricant may crack and scatter, and it is not possible to suppress the roughening of the wall surface of the hole, and it may contaminate the product or manufacturing environment. there were.

[0007]

DISCLOSURE OF THE INVENTION The present invention can reduce the frictional force generated between a drill and a plate to be processed, instantaneously dissipate the generated frictional heat, and contaminate the product or its manufacturing environment. It is an object of the present invention to provide a reed plate for punching and a method for manufacturing the same. In particular, the present invention provides a patch plate for punching, which can be used as a lower patch plate disposed on the lower surface of a plate to be processed, and a manufacturing method thereof.

[0008]

Means for Solving the Problems The inventors of the present invention have made extensive studies in order to solve the above problems, and as a result, have reached the following inventions. That is, (1) A perforated caul plate in which laminated paper made of pulp is sandwiched between aluminum foil layers with a water-soluble polymer layer interposed therebetween. (2) The thickness of laminated paper made of pulp is 0.5 to 2.0 m.
(3) The perforating pad plate (3) according to the above (1), wherein the water-soluble polymer layer has a thickness of 2 to 150 μm. (4) Perforating patch plate (4) The aluminum foil layer has a thickness of 5 to 500 μm, and the punching patch plate (5) is a laminated paper comprising pulp. A method for producing a patch plate for perforating, which comprises laminating a water-soluble polymer sheet and an aluminum foil layer on both surfaces in order and thermocompressing them.

As shown in FIG. 1, the punching patch of the present invention comprises laminated paper made of pulp sandwiched between aluminum foil layers with a water-soluble polymer layer interposed therebetween. When performing perforation processing using the corresponding plate, since the lower surface of the plate to be processed contacts the aluminum foil layer, the friction heat generated between the drill and the plate to be processed is instantly dissipated in the aluminum foil layer. can do.

Further, in the punching patch plate of the present invention, the frictional force generated between the drill and the plate to be processed can be reduced by the water-soluble polymer layer acting as a lubricant. In this way, the water-soluble polymer layer provided between the layers is
Does not absorb moisture during storage and does not cause stickiness. Further, cracks and the like are less likely to occur at the time of punching, and even if they do occur, the aluminum foil layer is present, so that the product or the manufacturing environment is not directly polluted.

In the method for manufacturing a punching patch according to the present invention, the punching patch is obtained by sequentially laminating a water-soluble polymer sheet and an aluminum foil layer on both sides of a laminated paper made of pulp and thermocompressing them. To manufacture. According to the manufacturing method of the present invention, it is possible to easily manufacture a punching plate having a multilayer structure.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below. As the laminated paper consisting of pulp according to the punching plate and the manufacturing method thereof of the present invention, a wet paper is formed by wet papermaking using a pulp-beaten slurry, and an arbitrary number of sheets are superposed, and hot pressed. The one integrated by heating and pressurizing is used. By changing the number of laminated wet paper sheets, a laminated paper sheet having an arbitrary thickness can be obtained.
It is preferably 5 to 2.0 mm.

Kraft pulp can be used predominantly as the pulp. Examples of the kraft pulp include unbleached softwood kraft pulp, bleached softwood kraft pulp, unbleached hardwood kraft pulp, and bleached hardwood kraft pulp. In addition, recycled pulp may be used.

The thickness of the aluminum foil layer relating to the punching plate and the method for producing the same of the present invention is preferably 5 to 500 μm. If the thickness of the aluminum foil layer is less than 5 μm, the diffusion of frictional heat by the drill will be insufficient. Further, when the thickness of the aluminum foil layer exceeds 500 μm, it becomes an obstacle during the drilling process.

As the water-soluble polymer relating to the punching plate and the method for producing the same of the present invention, polyvinyl alcohol, polyethylene glycol, polypropylene glycol, polyvinylpyrrolidone, polyacrylamide,
Polyacrylic acid and its salts, polyvinyl ether, polymaleic acid copolymer, polyethyleneimine, methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxyethylcellulose, gum arabic, sodium alginate and the like can be used.

The thickness of the water-soluble polymer layer according to the punching plate and the method for producing the same of the present invention is 2 to 150 μm.
It is preferably m. Water-soluble polymer layer thickness is 2μ
If it is smaller than m, the effect as a sufficient lubricant cannot be obtained,
Roughening of the wall surface of the hole cannot be suppressed. Although there is no problem even if the water-soluble polymer layer is thick, it is desirable that it does not exceed 150 μm from the economical viewpoint.

The perforating plate of the present invention is water-soluble by a roll coating method, a curtain coating method or the like using a coating solution containing a water-soluble polymer on the surface of a laminated paper (A) pulp. After providing the polymer layer, a method of further placing an aluminum foil and performing thermocompression bonding, (B) a roll coating method or a curtain coating method using a coating solution containing a water-soluble polymer on the surface of the aluminum foil layer. After the water-soluble polymer layer is provided by, for example, a laminated paper made of pulp may be placed and thermocompression bonded. From the viewpoint of workability, the water-soluble polymer sheet is previously formed (C) which is the method for producing a perforating cauldron plate of the present invention, and the water-soluble high-polymer sheet is formed by a laminated paper made of pulp and an aluminum foil layer. The most preferable method is to sandwich the molecular sheets and thermocompress them.

[0018]

EXAMPLES The present invention will be described below with reference to examples. Manufacture of laminated paper After laminating multiple layers of wet paper made of kraft pulp,
By hot press, temperature 140 ℃, pressure 50kgf /
Dewatering and drying at cm ² , thickness 0.5 mm,
1.0 mm and 2.0 mm laminated papers were manufactured, respectively.

Production of Water-Soluble Polymer Sheet Polyethylene glycol having a molecular weight of 50,000 20% by mass, polypropylene glycol having a molecular weight of 100,000
70% by mass, polyoxyethylene monolaurate 1
A water-soluble polymer mixed solution of 0 mass% was mixed at 120 ° C., and a thickness of 10 μm, 50 μm, 1 was obtained by an extrusion method.
A 50 μm water-soluble polymer sheet was obtained.

Example 1 An aluminum foil having a thickness of 5 μm, a water-soluble polymer sheet having a thickness of 10 μm, a laminated paper having a thickness of 0.5 mm, a water-soluble polymer sheet having a thickness of 10 μm, and an aluminum foil having a thickness of 5 μm were successively formed. The layers were laminated and thermocompression-bonded at 180 ° C. and 20 kgf / cm ² to obtain a punching plate I of the present invention.

Examples 2 to 3 Instead of a water-soluble polymer sheet having a thickness of 10 μm, a thickness of 5 was used.
Except for using a water-soluble polymer sheet having a thickness of 0 μm and a thickness of 150 μm, punching plates II and III of the present invention were obtained in the same manner as in Example 1.

Example 4 5 μm thick aluminum foil, 50 μm thick water-soluble polymer sheet, 1.0 mm thick laminated paper, 60 μm thick water-soluble polymer sheet, 5 μm thick aluminum foil in this order. The layers were laminated and thermocompression bonded at 180 ° C. and 30 kgf / cm ² to obtain a punching plate IV of the present invention.

Examples 5 to 6 Instead of an aluminum foil having a thickness of 5 μm, a thickness of 100 μm was used.
In the same manner as in Example 4, except that an aluminum foil having a thickness of m and a thickness of 500 μm was used, the punching plates V and VI of the present invention were obtained.

Examples 7 to 8 In the same manner as in Example 1, except that the laminated paper having the thickness of 1.0 mm and the thickness of 2.0 mm were used in place of the laminated paper having the thickness of 0.5 mm, the present invention was prepared. Perforating patch plates VII and V
I got III.

Example 9 20% by mass of polyvinyl alcohol having a molecular weight of 2500,
A water-soluble polymer mixed solution containing 50% by mass of polyethylene glycol having a molecular weight of 50,000, 10% by mass of polyoxyethylene monolaurate, and 10% by mass of water was used.
The mixture was mixed at 0 ° C., applied on one side of a laminated paper having a thickness of 1.0 mm by a roll coating method, and then dried at 140 ° C. to form a water-soluble polymer layer on the laminated paper. Then, a water-soluble polymer layer was provided on the other surface by the same method. Water-soluble polymer layer thickness is 3
It was 0 μm. The laminated paper provided on the water-soluble polymer layer was sandwiched between aluminum foil layers having a thickness of 30 μm,
Thermocompression bonding was carried out at 20 ° C. and 20 kgf / cm ² to obtain a punching plate IX of the present invention.

Example 10 The water-soluble polymer mixture prepared in Example 9 was mixed at 80 ° C., applied on one side of an aluminum foil layer having a thickness of 200 μm by a roll coating method, and then dried at 140 ° C. A water-soluble polymer layer having a thickness of 2 μm was provided. A 1.0 mm-thick laminated paper was sandwiched between aluminum foil layers so that the surface provided with the water-soluble polymer layer was in contact with the laminated paper, and then 180 ° C., 30 k
Thermocompression bonding was performed at gf / cm ² to obtain a punching pad X of the present invention.

Comparative Example 1 An aluminum foil having a thickness of 100 μm was attached to one surface of a laminated paper having a thickness of 1.0 mm with an epoxy adhesive to obtain a perforating patch plate a of Comparative Example.

Comparative Example 2 A laminated paper sheet having a thickness of 1.0 mm and a water-soluble polymer sheet having a thickness of 150 μm were laminated in this order, and the temperature was 180 ° C. and 10 kgf / cm ^2.
Then, thermocompression bonding was performed to obtain a punching plate b for a comparative example.

Evaluation Method Using a glass-based epoxy resin 6-layer board (inner layer 4 layers, inner layer copper foil thickness 40 μm, outer layer thickness 18 μm copper foil) having a thickness of 1.6 mm, perforation processing was performed under the following conditions. As the upper backing plate, a thickness of 50 μm is provided on one side of an aluminum foil layer of 200 μm.
The one provided with a water-soluble polymer layer of μm was used. As the lower patch, the punching plate of the present invention and the punching plate of Comparative Example were used. The patch b of the comparative example is
The water-soluble polymer layer was placed in contact with the 6-layer plate.

Diameter of drill bit: 0.30 mm Drill rotation speed: 80000 rpm Feed rate: 1.6 mm / min Arrangement: (drill) Upper cover plate / 6 layer plate / lower cover plate

For the evaluation, the side surface of the through hole was roughened and the burr and blockage of the through hole on the surface in contact with the lower backing plate were observed by visual observation or a microscope. . Further, in the storability test, these patch plates were stored for 3 months, and those having warpage or stickiness were evaluated as x. The results are summarized in Table 1.

[0032]

[Table 1]

Reliable plate I for punching according to the embodiment of the present invention.
No defects such as roughening of the side surface of the through hole and burrs and blockages of the through hole were found in the 6-layer plate subjected to the drilling process using X. In addition, in the storage tests of the punching patch plates I to X of the example, stickiness and warpage were not confirmed.

In the punching patch a of the comparative example, since the water-soluble polymer layer was not present, it was confirmed that the side surface of the through hole was roughened. Further, in the punching patch b, since there was no aluminum foil layer, burrs and blockages of the through holes were confirmed. Moreover, in the patch plate b for perforation processing, stickiness and peeling of the water-soluble polymer layer on the surface and warpage of the entire patch plate were confirmed after 3 months.

The manufacturing method of the punching plate of the present invention in Examples 1 to 8 is carried out by using an aluminum foil layer, a water-soluble polymer layer,
The laminated paper, the water-soluble polymer layer, and the aluminum foil layer were laminated in one step, and the patch plate could be easily manufactured.

[0036]

As described above, the punching plate of the present invention can reduce the frictional force generated between the drill and the plate to be machined, and can instantaneously dissipate the generated frictional heat. , Can reduce the pollution of the product and its manufacturing environment. Further, the method for manufacturing a perforated patch according to the present invention is excellent in workability.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an example of a punching pad of the present invention.

[Explanation of symbols]

1 Laminated paper consisting of pulp 2 Water-soluble polymer layer 3 Aluminum foil layer

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3C036 CC07                 4F100 AB10D AB10E AB33D AB33E                       AK01B AK01C AK41 AK54                       BA05 BA06 BA10D BA10E                       DG10A GB43 JB09B JB09C                       YY00A YY00B YY00C YY00D                       YY00E

Claims (5)

[Claims] 1. A punching plate for laminating a laminated paper made of pulp between aluminum foil layers with a water-soluble polymer layer interposed therebetween. 2. The thickness of the laminated paper made of pulp is 0.5 to
It is 2.0 mm, The patch plate for perforation processing of Claim 1 characterized by the above-mentioned. 3. The water-soluble polymer layer has a thickness of 2 to 150 μm.
The patch plate for perforating according to claim 1 or 2, wherein 4. The aluminum foil layer has a thickness of 5 to 500 μm.
m. The punching plate according to any one of claims 1 to 3, wherein m is m. 5. A method of manufacturing a patch plate for punching, comprising laminating a water-soluble polymer sheet and an aluminum foil layer on both sides of a laminated paper made of pulp in this order and thermocompressing the laminated sheet.