CN100515161C - Common rolled separation board - Google Patents
Common rolled separation board Download PDFInfo
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- CN100515161C CN100515161C CNB2005101170405A CN200510117040A CN100515161C CN 100515161 C CN100515161 C CN 100515161C CN B2005101170405 A CNB2005101170405 A CN B2005101170405A CN 200510117040 A CN200510117040 A CN 200510117040A CN 100515161 C CN100515161 C CN 100515161C
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- division board
- long strip
- laminated plates
- strip type
- sheet laminated
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Abstract
This invention relates to an isolation board used in eliminating volatile materials in strip slice lamination board containing volatile materials, in which, the strip slice lamination board is heated in the state of a reel to eliminate said volatile material, one surface of the isolation board is smooth and a roughness part projecting over said surface is set on either side of its reversed surface along the two sides, when the lamination board is in a reel state, this invented isolation board is used to roll it so as to discharge the volatile material from the channel formed by the concave part in the roughness part set at either side of the isolation board in the process of heating.
Description
Technical field
The present invention contains the method for this volatile materials in the volatile materials material relevant for a kind of removal, especially removes the devices and methods therefor of volatile solvent and/or gaseous by-product relevant for a kind of manufacturing process that is used for the laminated plates that flexible printed wiring board uses.
Prior art
The known long strip type flaky material that contains volatile solvent and polymerization single polymerization monomer (monomer), normally by heating and (for example being aided with decompression, vacuumize) mode, removing its volatile solvent that is contained and to make its drying, and can promote polymerization single polymerization monomer to carry out polymerization reaction to form polymer.For example, in the process of preparation flexible printed wiring board, can contain polyamic acid (polyamic acid, PAA) varnish (varnish) composition of volatile solvent at copper foil surface coating one deck with copper foil laminated substrate.Afterwards, by adding the volatile solvent that heat abstraction is used for dissolving polyamic acid, make simultaneously the polyamic acid polymerization form polyimides (polyimide, PI).In the process of aforementioned heat treated, known is to carry out drying according to the method for scroll bar formula (roll-to-roll).Thisly carry out methods of heating treatment by heating furnace, the required time of the length of its heating furnace and heat treated is directly proportional, that is, the heat treated time is long more, and then the length of required heating furnace is also long more.If but were the expense of saving equipment contraction in length with heating furnace, then need reduce the speed of long strip type flaky material by heating furnace guaranteeing that arranged enough heating times, but can cause the low problem of throughput rate thus.
For this reason, in Japanese patent of invention discloses 61-307789 number (spy opens clear 61-307789) communique, disclosed a kind of by carrying out methods of heating treatment behind the shape that aforementioned long strip type flaky material is rolled up earlier.This method is not used common rolled with division board (spacer), so storeroom can produce the problem of sticking together.For overcoming the problem that this storeroom sticks together, Japanese patent of invention discloses and has disclosed adhesive-bonded fabric or the stainless steel wire netting of a kind of use one surface roughness (Ra) more than 0.5 μ m in 4-84488 number (spy opens flat 4-84488) communique and carry out methods of heating treatment as common rolled with division board.But have the fiber of adhesive-bonded fabric that residual situation can take place in its actual use, and adhesive-bonded fabric or stainless steel wire netting can stay impression at material surface after treatment, and (for example, netted vestige) problem cause product percent of pass not good.For overcoming this problem, Japan's patent of invention discloses in 8-224797 number (spy opens flat 8-224797) communique and has disclosed a kind of common rolled division board of being made by Copper Foil 10 of using, it has one and is arranged at the matsurface that its surface constitutes by a plurality of projection pieces 12, and another surface is shiny surface (Fig. 1).When operation, carry out common rolled near a side that is coated with polymerization single polymerization monomer in the long strip type flaky material by matsurface with division board.Volatile solvent can be vaporized and be overflowed between the gap of projection piece when carrying out heat treated.Though this method can avoid the adhesive-bonded fabric fiber residual, and the problem of minimizing material surface impression after treatment, it also can't be avoided fully.In addition, need significantly increase processing cost for making this division board, and the hole on the matsurface of division board can be clogged by residual polymerization single polymerization monomer, promptly need abandon after causing it to use two, three times, this also can increase processing cost.
For overcoming in the aforementioned prior art problem of the residual impression of material surface after treatment fully, other has the people to propose on a kind of dual-side that two strip metal guipures is positioned over the long strip type flaky material respectively the long strip type flaky material to be rolled into reel to carry out heat treated as division board.The part that impression is left on long strip type flaky material both sides after the heat treated cuts, to obtain printless finished product.The method also has its shortcoming in practical operation, the frictional force that is produced when for example metal mesh belt can be emitted because of the metal mesh belt of rolling, it is different to cause two strip metal guipures to produce in the tension force in when operation and speed, and then causes the long strip type flaky material left and right sides to be subjected to pullling of different powers and cause long strip type flaky material formation fold.In addition, when metal mesh belt is too thick, under the situation that the long strip type flaky material of rolling is upright, collapse, cause its surface to produce fold and apparent damage owing to the weight of metal mesh belt too heavily makes the long strip type flaky material to support; Otherwise when too thin, then the situation of glutinous plate can take place in the long strip type flaky material of rolling, and cut more excessive than meeting by the length of the formed vent aperture of metal mesh belt, make hot blast to enter, and lose its due effect, and can cause the physics and the chemical characteristic of the long strip type flaky material ectonexine of rolling to produce difference.Even and this problem is used the radiation heating mode instead and is carried out heat treated and also can't overcome.
Summary of the invention
For solving existing problem in the aforementioned prior art, the present invention promptly provides a kind of method that contains this volatile materials in the volatile materials material of being removed by division board at this, can (for example stay undesired residue on long strip type flaky material surface to overcome aforementioned existing method, fiber), impression and fold, and the problem that outer field physics and chemical characteristic change within the finished product, for example surface color skewness.
For reaching the object of the invention, pointed a kind of division board that is used for removing this volatile materials of long strip type sheet laminated plates that contains volatile materials according to the present invention, this long strip type sheet laminated plates is to carry out heat treated to remove this volatile materials with reel, wherein one of this division board surface is an even surface, protrudes from this surperficial roughness and be respectively arranged with one along its two long sides limit on the surface of its reverse side.
When long strip type sheet laminated plates is rolled into reel, use division board of the present invention to carry out common rolled, the volatile materials that long strip type sheet laminated plates is contained is able in the process of heat treated, is arranged at the formed channel discharge of depressed part in the roughness on the division board dual-side of the present invention certainly.
The present invention also provides a kind of and prepares the method for use in printed circuit board laminated plates by common rolled with division board, and step comprises:
(1) obtains one and comprise the long strip type sheet laminated plates that a substrate and was pre-formed thereon and contained the material layer of volatile materials;
(2) be rolled into reel in this long strip type sheet laminated plates, to carry out heat treated when removing this volatile materials, use foregoing division board to carry out common rolled so that be rolled into each this long strip type sheet laminated plates of layer of reel and separated, this surface that wherein is provided with roughness in this division board is the material layer in the face of this long strip type sheet laminated plates; And
(3) to heating, so that this volatile materials is able to the discharge of the pothole in the roughness on this division board dual-side by common rolled this long strip type sheet laminated plates of reel of this dividing plate.
The pointed common rolled division board of using according to the present invention can effectively be avoided producing the situation of fold because of existing demarcation strip both sides tension force inequality causes long strip type sheet laminated plates.In addition, division board of the present invention uses when having the material of thermal conductivity, the sectional area that can make heat pass increases (long strip type sheet laminated plates adds the thickness of division board) to obtain preferable heat-conducting effect, and then make that the inside and outside layer temperature difference of long strip type sheet laminated plates of reel is unlikely excessive, can avoid the inside and outside layer finished product physics that excessive temperature differentials caused of the known long strip type sheet laminated plates that causes reel because of heat treated and the difference of chemical characteristic whereby.In addition, division board of the present invention can effectively increase the support force of the long strip type sheet laminated plates of reel, therefore when reason reel long strip type sheet laminated plates is not upright, and top preponderance and it is crushed.So carry out to make that long strip type sheet laminated plates as thin as a wafer is prepared when common rolled with division board of the present invention.
Long strip type flaky material described in the present invention is meant laminar material, its length-width ratio〉10.Long strip type sheet laminated plates described in the present invention is meant the composite material that is formed by stacking by plural layer long strip type flaky material.
Description of drawings
Fig. 1 is known common rolled schematic diagram with division board;
(A) be vertical view; (B) be cutaway view in the face of A-A ' direction
Fig. 2 is the common rolled schematic diagram with division board of the present invention;
(A) be vertical view; (B) be cutaway view in the face of B-B ' direction
Among the figure
10 division boards
12 projection pieces
20 division boards
22 supporting brackets
24 first surfaces
26 second surfaces
28 roughness
Embodiment
The present invention will be described further by following detailed description and embodiment, and these embodiment do not limit to disclosed content.Be familiar with the person skilled in the art of the present invention, can do some improvement and modify, but still the scope that does not break away from the present invention and protected.
Consult Fig. 2, be the common rolled schematic diagram with division board pointed according to the present invention.Pointed a kind of division board 20 that is used for removing this volatile materials of long strip type sheet laminated plates that contains volatile materials according to the present invention, this long strip type sheet laminated plates is carried out heat treated to remove this volatile materials with reel, wherein this division board 20 comprises a supporting bracket 22, and supporting bracket 22 first surfaces 24 are one to be the even surface of smooth surface in essence; And with respect to being respectively arranged with a roughness 28 that protrudes from this second surface 26 along the side on its two long limits on the second surface 26 of the reverse side of first surface 24.This roughness 28 is according to need on this second surface 26 that is arranged at this division board 20 of predetermined fixed, or on separable this second surface 26 that is arranged at this division board 20, not special in the present invention restriction.But for considering the replaceability of cost benefit and part, this roughness 28 is preferably separable to be arranged on this second surface 26 of this division board 20.
When this roughness 28 is according to need on this second surface 26 that is arranged at this division board 20 of predetermined fixed, this roughness 28 is meant the structure with continuous depressed part design among the present invention, so long as any known structure that escaping gas flows that can not influence, can make volatile materials be able to space via continuous depressed part through the volatilization of being heated, discharge side from the long strip type sheet laminated plates of reel, all can be applied among the present invention, in this not special restriction.As aforementioned structure with continuous depressed part design, for example protrude from all columns on the plane, these columns comprise cylinder, ovallized column, shape of a hoof post, square column, trapezoidal column etc., but are not limited in this.Protrude from the various shapes on the plane, can be obtained, also without particular limitation in the present invention by the cutting or the etching method of known mechanical or chemistry.
When this roughness 28 is on separable this second surface 26 that is arranged at this division board 20 time, this roughness 28 is meant the banded structure with continuous depressed part design among the present invention, guipure for example, but be not limited in this.As the example of aforementioned guipure, metal mesh belt for example, but also be not limited in this.Roughness 28 protrudes from the height on supporting bracket 22 surfaces, without particular limitation in the present invention, so long as depressed part can be set thereon, so that gas is able to overflow via this depressed part, all can be applied among the present invention, but they are highly preferably between 15～1000 μ m.
Supporting bracket 22 can be identical with the material of roughness 28 in the aforementioned division board 20, also can be different.So long as any known material that can stand the temperature of aforementioned heat treated all can be applied among the present invention.Be the heat-transfer effect and the support effect of the long strip type sheet laminated plates of considering reel, supporting bracket 22 is preferably metal formings such as copper, aluminium, stainless steel, or includes the laminated plates of those metal formings.For making it that preferable support effect be arranged, the thickness of supporting bracket 22 is not special restriction in the present invention, as long as make the thickness of supporting bracket 22 add that the summation of long strip type sheet laminated plates thickness is between 30～3000 μ m.Therefore, the present invention can be applied in the preparation of ultra-thin long strip type sheet laminated plates (for example, the copper foil laminates of 9 μ m).
The present invention is common rolled with the applicable long strip type sheet of division board laminated plates scope, so long as have heat-resisting on it and need to remove the long strip type sheet laminated plates of erosion resisting metal forming of the resin molding of volatile ingredient, all can use division board of the present invention and remove volatile materials in the resin molding by high temperature.Example as long strip type sheet laminated plates among the present invention, for example have the laminated plates of the metal forming such as copper, aluminium of polyethylene (polyethylene), polypropylene (polypropylene), polyester (Polyester), polyamide, polyimides, polyphenyl resin moldings such as (polystyrene) on it, but be not limited in this.
The even surface of division board of the present invention is meant to have the plane of smooth surface in fact, even if having concavo-convex slightly fluctuating, only otherwise influence enforcement of the present invention, still in the scope of the alleged even surface of the present invention.Aforesaid even surface refer in particular to have the mean roughness degree of depth (Rz value) below 1mm.Depressed part on the roughness of division board of the present invention can be not of uniform size, even and scatter inhomogeneously, be heated vaporization after discharge so long as can not influence volatile substance, all in the alleged scope that roughness contained of the present invention by depressed part.
On the other hand, the long strip type sheet laminated plates that contains volatile materials described in the present invention, it can be the long strip type sheet laminated plates of homogenous material lamination on the metal forming plate, and it also can be plural number and plants the long strip type sheet laminated plates of different materials lamination more than being constituted on the metal forming plate two-layer.With the example of Copper Foil as the metal forming of long strip type sheet laminated plates among the present invention, can be coated with the then material of polyimide precursor resin solution on it, be coated with the sensing optical activity resin solution again.
The present invention is common rolled to be can be used for division board in the preparation of use in printed circuit board substrate, this use in printed circuit board substrate has by conductor layers that metal constituted such as Copper Foils, and the insulating barrier of coating resin solutions such as polyimide precursor resin thereon, this substrate is after predrying, carry out with it by division board of the present invention more common rolled, to form a reel.Carry out when common rolled, the even surface of spacer of the present invention is towards the conductor layer of substrate, and another side is then towards insulating barrier.When carrying out heat treated under the common rolled state of division board of the present invention, the remaining solvent that is contained in the polyimide precursor resin can be removed through volatilization after the heat treated.In heating, can carry out the endless loop reaction, make this presoma be for conversion into polyimides fully.(accessory substances of gas) such as condensation water that reaction at this moment produces and unreacted remaining polymerization single polymerization monomers also can be removed via volatilization simultaneously.
And aforementionedly can be the inside of the substrate of reel certainly via the material of heated volatile, via the channel that depressed part forms in the matsurface that is arranged at spacer dual-side of the present invention, be expelled to its outside.Can avoid volatile materials to accumulate whereby, and then prevent that finished surface from the situation of polluting taking place in the inside that is the reel substrate.In addition, because the even surface of spacer of the present invention is smooth in the conductor layer of base material, therefore can prevent the generation of the bad order situation of finished product substrate.In addition, it is long-pending that spacer of the present invention also can increase the supporting section of base material, and then improve the support force of base material when upright.On the other hand, can be increased by spacer of the present invention because the heat-conducting section of base material is long-pending, so can effectively improve its hot transfer efficiency.Therefore can make inside and outside the temperature difference of reel substrate to reduce, therefore can effectively avoid causing the physics of ectonexine base material and the situation (for example, surface color skewness) that chemical characteristic produces difference because of the heating temperature difference.
In addition, owing to during the smooth conductor layer in base material of the even surface of division board of the present invention, can effectively increase the stressed sectional area of base material.Even if so use existing metal mesh belt as the roughness in the division board of the present invention, even if the tension force of both sides metal mesh belt and speed inequality, because the effective stressed sectional area of base material increases, so pullling for both sides metal mesh belt differential tension, can become comparatively insensitive, so be difficult for therefore producing fold.
Claims (8)
1. common rolled division board of using, it is used for removing this volatile materials of the long strip type sheet laminated plates that contains volatile materials, carry out heat treated when removing this volatile materials in the long strip type sheet laminated plates that is reel, this division board is as common rolled usefulness, wherein one of this division board surface is an even surface, protrude from this surperficial roughness and be respectively arranged with one along its two long sides limit on the surface of its reverse side, this roughness is separable to be arranged on the surface of this division board.
2. the described division board of claim 1, wherein this roughness is one to have the banded structure of continuous depressed part.
3. the described division board of claim 2, wherein this banded structure is a metal mesh belt.
4. the described division board of claim 1, wherein this division board adds that the thickness summation of this sheet laminated plates is between 30～3000 μ m.
5. the described division board of claim 1, wherein the even surface of this division board is when common rolled, smooth do not have on the side of volatile substance in this long strip type sheet laminated plates, and the surface that this division board is provided with this roughness has on the another side of volatile substance in the face of in this long strip type sheet laminated plates.
6. the described division board of claim 1, wherein to protrude from the height on this division board surface be 15～1000 μ m to this roughness.
7. the described division board of claim 1, wherein the mean roughness degree of depth Rz value of this even surface is not more than 1mm.
8. one kind prepares the method for use in printed circuit board laminated plates by common rolled with division board, may further comprise the steps:
(1) obtains and comprise the long strip type sheet laminated plates that a substrate and was pre-formed thereon and contained the material layer of volatile materials;
(2) be rolled into reel in this long strip type sheet laminated plates, to carry out heat treated when removing this volatile materials, use the described division board of claim 1 to carry out common rolled, separated so that be rolled into each this long strip type sheet laminated plates of layer of reel, wherein be provided with the material layer of this surface of this roughness in this division board in the face of this long strip type sheet laminated plates; And
(3) to heating, so that this volatile materials is able to the discharge of the pothole in the roughness on this division board dual-side by common rolled this long strip type sheet laminated plates of reel of this division board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101170405A CN100515161C (en) | 2005-10-28 | 2005-10-28 | Common rolled separation board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101170405A CN100515161C (en) | 2005-10-28 | 2005-10-28 | Common rolled separation board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1956633A CN1956633A (en) | 2007-05-02 |
| CN100515161C true CN100515161C (en) | 2009-07-15 |
Family
ID=38063643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101170405A Active CN100515161C (en) | 2005-10-28 | 2005-10-28 | Common rolled separation board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100515161C (en) |
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2005
- 2005-10-28 CN CNB2005101170405A patent/CN100515161C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1956633A (en) | 2007-05-02 |
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