JP3193667U - Improved lubrication entry board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved lubrication entry board which has no base coat layer and can reduce unstable fixation caused by a lubrication layer. An improved lubrication entry board 1a includes a base material 3 and a lubrication layer 5 coated on the base material, of which there is no base coat layer between the base material and the lubrication layer, and the lubrication At least one edge of the layer comprises an improved edge structure, the improved edge structure is configured by applying a non-slip treatment to at least one edge of the lubrication layer to secure the improved lubrication entry board. Sometimes the instability of fixation caused by the lubrication layer can be reduced, and the improved lubrication entry board can tightly bond the lubrication layer to the substrate without the need for a basecoat layer, and further improvements. The improved edge structure of the mold lubrication entry board enhances the adhesiveness of the tape on the surface of the lubrication entry board so that it can be stably fixed on the drilling machine. [Selection diagram] Fig. 2

Description

The proposal relates to an improved lubricated entry board without a base coat layer, in particular, an improved lubricated entry board with special treatment on the edge of the lubricated entry board, which reduces the phenomenon of unstable tape adhesion caused by the lubricated layer. It relates to the edge structure.

  A printed circuit board (PCB) is an indispensable basic member in today's electronic equipment. Since its first appearance in the 1930s, it has integrated complex electronic circuits into the invention of printed wiring boards, solving the limitations on the space caused by the wire connections of each device in electronic devices, and greatly reducing the volume of electronic devices. doing. At present, most types of printed wiring boards can be classified into conventional single-sided / double-sided boards. Later developed multi-layer boards and high density interconnect (HDI) boards are IC boards in the semiconductor package process. And flexible circuit boards in bendable electronic products.

  The drilling process in the printed wiring board process is to form a plurality of holes on the board by mechanical drilling or laser drilling, and these holes are connected to different pins in the electronic device or different layers in the multilayer circuit board. Can be used to connect a circuit connecting the two. With the development of miniaturization and precision of electronic products, the conductor gap and wiring density in the printed wiring board are constantly reduced, and the size of the hole needs to be reduced accordingly. For this reason, in order to meet the needs of the current printed wiring board industry, more precise and accurate drilling technology is required.

  The machine drilling process of printed wiring boards usually uses a drilling machine, but in response to the need for miniaturization, through the improvement of process technology, the fine drill bits currently used in drilling machines are the smallest The diameter of 75 μm or less has already been achieved. At the time of implementation, a backup board, one or a plurality of printed wiring boards for drilling, and an entry board are stacked in order from the bottom on the drilling machine. Among them, the main function of the entry board is to reduce burrs generated during drilling, and also to increase the drilling accuracy of the drill bit. The entry board is usually fixed by sticking the entry board on a perforating machine using tape on the edge of the board.

  Most of the commercially available entry boards are based on aluminum, and in order to further improve the drilling quality, some of the entry boards are coated with a resin paint on the surface of the base 103 as shown in FIG. , And another resin paint is applied to the surface of the base coat layer 101 to form the lubrication layer 105, whereby the conventional lubrication entry board 100 is obtained. Among them, the lubricating layer 105 can reduce the cutting heat generated by friction during the drilling process, and can also increase the drill traveling speed of the drill bit. Conventionally, when the base coat layer 101 is not present, the lubricating layer 105 is directly applied to the surface of the base material 103, and the adhesion between the base material 103 and the lubricating layer 105 is not good, so the lubricating effect of the lubricating layer 105 is greatly reduced. To do. Although the presence of the base coat layer 101 provides good adhesion and solves the above-mentioned problems, in order to provide good adhesion, the base coat layer 101 generally needs to use a water-insoluble resin, Since this is relatively hard, drill bit wear tends to increase.

  In addition, the lubricating layer 105 is useful for improving the efficiency of the drilling process. However, when the conventional lubricating entry board 100 is fixed on a drilling machine with a tape, the lubricating action of the lubricating layer 105 causes the conventional lubricating entry board 100 to be used. The surface of the lubricated entry board 100 has a greatly reduced adhesiveness to the tape, and the conventional lubricated entry board 100 cannot be firmly fixed to the surface of the drilling machine, causing sliding, vibration, and further slipping. The drill accuracy of the bit is reduced, and in serious situations, the drill can be broken or the wear of the drill becomes severe, which can greatly affect the quality of the drill.

  As described above, the base coat layer of the conventional lubricated entry board has a relatively high hardness, and the wear of the drill bit tends to increase. In addition, the lubricating layer of conventional lubricated entry boards often has reduced adhesion to the tape on its surface. In view of this, an object of the present invention is to provide an improved lubrication entry board that does not have a base coat layer and can reduce the unstable fixing phenomenon caused by the lubrication layer.

  In order to achieve the above and other objects, the improved lubrication entry board of the present invention includes a base material and a lubricating layer applied on the base material, and a base coat layer between the base material and the lubricating layer. There is no.

  In the above-described lubrication entry board, at least one edge of the lubrication layer may include an improved edge structure, and the improved edge structure has an anti-slip treatment on at least one edge of the lubrication layer. In addition, when the improved lubrication entry board is configured, it reduces the unstable fixing caused by the lubrication layer.

  In the above-described lubrication entry board, the anti-slip treatment can be wiped after applying a solvent to the edge of the lubrication entry board, and the solvent is selected from the group consisting of alcohols, ketones or water And removing at least a portion of the lubricating layer.

  In the above-mentioned lubrication entry board, the anti-slip treatment can increase the tackiness and roughening of the surface material, and is applied to the edge of the lubrication entry board. The main components of the material are PVA, It is selected from the group consisting of PVP, acrylic, epoxy resin, or PU, and can enhance and roughen the adhesiveness of the surface material coating layer at the edge of the lubrication entry board.

  In the above-described lubrication entry board, the anti-slip treatment can be applied to an edge of the lubrication entry board, and the anti-slip tape is masking tape, silicon tape, rubber tape, insulating tape, craft tape or Selected from the group consisting of PET tape.

  In the above-described lubrication entry board, the anti-slip treatment may roughen the edge of the lubrication entry board using a physical method.

  In the above-described lubrication entry board, the physical method can perform a roughening process on the edge of the lubrication entry board using a roughening roller or a knife.

  In the above-described lubrication entry board, the anti-slip treatment can remove at least a part of the lubrication layer using a heat source.

  In the above-described lubrication entry board, the heat source can be hot air or hot pressure.

  In the above-mentioned lubrication entry board, the width of the improved edge structure can be 0.1 mm to 10 mm.

  In the above-described lubrication entry board, the anti-slip treatment can be integrated with the cutting process in the lubrication entry board process.

  The lubrication entry board provided by the present invention does not require a base coat layer and can adhere the lubrication layer and the base material tightly. In addition, the presence of the improved edge structure increases the adhesiveness of the surface to the tape, and the lubrication entry board is stably fixed on the drilling machine, and slides, vibrates and slips during the drilling process. This affects the drilling accuracy of the drill bit caused by the occurrence of drilling, and it is possible to greatly reduce phenomena such as a decrease in drill accuracy, breakage of the drilling drill, and severe wear of the drill.

It is the schematic of the conventional lubrication entry board. It is the schematic of the improved type | mold lubrication entry board of this invention. It is the schematic which shows the edge of the lubrication entry board by which the slip prevention process by the solvent of Example 2 of this invention was carried out. It is sectional drawing which shows the use condition of the lubrication entry board by which the slip prevention process by the solvent of Example 2 of this invention was completed. It is the schematic which shows the edge of the lubrication entry board by which the adhesiveness of Example 3 of this invention was raised and the anti-slip process which roughened surface material was processed. It is sectional drawing which shows the lubrication entry board use state after the anti-slip process which raised the adhesiveness of Example 3 of this invention, and roughened the surface material.

  In order that the purpose, features, and effects of the present invention can be fully understood, the present invention will be described in detail below in combination with specific embodiments in conjunction with the accompanying drawings.

  The improved lubrication entry board of the present invention includes a base material and a lubricating layer applied on the base material, and no base coat layer is provided between the base material and the lubricating layer.

  In the improved lubrication entry board of the present invention, in order to allow the lubrication layer and the substrate to adhere tightly without the need for a base coat layer, the lubrication layer uses an aqueous polyurethane dispersion described below, and the substrate It is formed by coating on top.

  Aqueous polyurethane dispersion applied to improved lubrication entry board of the present invention

  [Waterborne polyurethane resin]

  One aspect of the aqueous polyurethane dispersion applied to the improved lubrication entry board of the present invention is an aqueous polyurethane resin, which includes a polyurethane resin, a neutralizing agent, and an aqueous phase solvent. Hydrophilic functional groups such as a polymer polyol, a nonionic group, and an anionic group having a group formed from an isocyanate and a polymer polyol and a nonionic group, and a side chain of the polyurethane resin having a carboxyl group-containing anionic group and a nonionic group By introducing, the polyurethane resin has good dispersibility in an aqueous phase solvent. The aqueous solvent includes water and an organic solvent that is mutually soluble with water.

  Further, in an embodiment of the present invention, the weight of the aqueous polyurethane resin is 100 wt%, the content of the polyurethane resin and the neutralizing agent is 30 wt% to 50 wt%, the content of water is 30 wt% to 67 wt%, the content of the organic solvent Is 2 wt% to 25 wt%.

  As can be understood by those having ordinary knowledge in the technical field to which the present invention belongs, the NCO% reaction titration value is generally obtained by measuring by a known method. When the polyisocyanate is consumed due to excessive reaction during the synthesis of the polyurethane resin, and the NCO% reaction titration value is less than 50% of the theoretical value of NCO%, the crosslinking degree of the polyurethane network structure becomes too high due to the excessive reaction amount of polyurethane. As a result, the polyurethane resin produces a large amount of agglomerated gel in the aqueous phase solvent, resulting in a decrease in process yield. If the NCO% reaction titration value is higher than 85% of the theoretical value of NCO%, the proportion of the network structure of the polyurethane resin after synthesis is insufficient, and the aqueous polyurethane resin containing the polyurethane resin forms a thin film. When the surface viscosity is too high and it is necessary to wind the plate material containing the thin film, the plate material cannot be developed again due to the viscosity of the thin film, resulting in a large number of defective products, and waste of cost. Invite.

  The above-mentioned water-based polyurethane resin needs to convert an appropriate amount of a cross-linking agent at the time of textile coating application of the coating layer, and to improve the adhesion of the polyurethane resin to the fibers and the washing resistance.

  The polymer polyol may be a polyester polyol or a polyether polyol, and may be a composition containing a polyester polyol and a polyether polyol.

  The nonionic group is on the main chain and side chain of the polyurethane resin, and is formed from a glycol containing an ethoxy group such as polyethylene glycol. It should be noted that the nonionic group is used for enhancing the hydrophilicity of the polyurethane resin. Therefore, the nonionic group of the present invention does not belong to an ionic compound and represents a hydrophilic polyalcohol, The nonionic group of the present invention can also be used when any of the polymer polyols described above can provide good hydrophilicity.

  The anionic group serves as an internal emulsifier of the polyurethane resin, that is, directly modifies a compound having a high polarity on the polymer molecule of the polyurethane resin and having a carboxyl group, and the polyurethane resin in the aqueous phase solvent. It can be dispersed without adding an additional emulsifier. In addition, the structure of the anionic group has a relatively large steric barrier, thereby preventing reaggregation between dispersed polyurethane resins and achieving a uniformly dispersed state. For example, the source of the anionic group may be 2,2-dimethylolpropionic acid (DMPA, dimethylpropionic acid). It should be understood that a compound having any carboxyl group that satisfies the above-described properties can be used as the source of the anionic group of the present invention.

  The neutralizing agent is an alkali, and the alkali has a different carbon number such as a tertiary amine such as triethylamine (TEA), tripropylamine (TPA), or tributylamine (TBA, tributylamine). Alkylamines or hydroxides. The neutralizing agent in the present invention is used to neutralize the carboxyl group of the anionic group to produce an ionic center, and after the neutralizing agent and the aqueous solvent are volatilized, the neutralizing agent part of the ionic center is The carboxyl group of the anionic group is removed, and at this time, the aqueous polyurethane resin has a crosslinked carboxyl group and forms a thin film having good adhesive force.

  Examples of the organic solvent include isopropyl alcohol, sec-butyl alcohol, acetone, methyl ethyl ketone, toluene, N, N-dimethylformamide (DMF, Dimethyl). Formamide) or N, N-dimethylacetamide (DMAc, dimethyl acetate).

  In addition, it should be noted that the content value of ions (that is, anionic groups and neutralizing agents) contained in the above-mentioned aqueous polyurethane resin occupies about 3.0 wt% to 6.0 wt% of the weight of the aqueous polyurethane resin. Preferably, based on the range of the ionic content, an appropriate number of ion centers are formed in the aqueous polyurethane resin to improve the interaction between the polyurethane resin and the aqueous solvent, thereby improving the hydrophilicity of the polyurethane resin. To increase the stability of the dispersion while at the same time ensuring that the ion content is not too high and the resulting thin film is not too hard, and the drill bit breakage rate when drilling into the thin film Decrease.

  [Water-based silicone polyurethane resin]

  Furthermore, another aspect of the aqueous polyurethane dispersion applied to the improved lubrication entry board of the present invention is an aqueous-silicon polyurethane resin, which includes a silicone-modified polyurethane resin, a neutralizing agent, and an aqueous phase solvent. The structure of the silicone-modified polyurethane resin introduces a polysiloxane copolymer having reactivity on the main chain of the above-mentioned polyurethane resin, such as a polysiloxane diamine copolymer or a polysiloxane glycol copolymer. Therefore, it should be noted that the main chain of the silicon-modified polyurethane resin also includes a group formed from a polyisocyanate and a polymer polyol and a nonionic group, and the side chain of the silicon-modified polyurethane resin includes an anionic group and a nonionic group. It is a point that has.

  At the same time, the NCO% reaction titration value of the silicon-modified polyurethane resin is 50% to 85% of the theoretical value of NCO%, and the polyisocyanate, the polymer polyol, the anion group, the source of the nonionic group, the neutralizer The water phase solvent is substantially the same as that disclosed in the above-mentioned aqueous polyurethane resin.

  In addition, in an embodiment of the present invention, the weight of the aqueous-silicon polyurethane resin is 100 wt%, the content of the silicone-modified polyurethane resin and the neutralizer is 30 wt% to 50 wt%, and the water content is 30 wt% to The content of the organic solvent is 67 wt% and 2 wt% to 25 wt%.

  The main chain of the above-mentioned polysiloxane copolymer is formed by connecting siloxane (Si-O-Si) chains, and side chains composed of aliphatic hydrocarbons such as alkyl groups also on silicon atoms (Si). And the bond angle of the Si-O-Si chain constituting the main chain of the polysiloxane copolymer is relatively large, so that the degree of freedom in molecular motion of the silicon-modified polyurethane resin composed of the polysiloxane copolymer is greater Is provided. In addition, the Si—O chain length reaches 0.193 nm, the distance between the silicon atom and the oxygen atom is longer, and the polysiloxane copolymer is less likely to be crystallized.

  At the same time, the polysiloxane copolymer has extremely low surface tension and excellent wear resistance, so that when water-silicone polyurethane resin is applied to metal drilled metal flexible substrates, it can be used for metal flexible substrates. After that, the wear between the contact surface of the silicon-modified polyurethane resin and the contact surface of the metal flexible substrate to which the silicon-modified polyurethane resin adheres is remarkably reduced, and at the same time, the silicon-modified polyurethane resin is excellent in water-silicone polyurethane resin. It also provides fluidity, film surface flatness, defoaming properties, and a refreshing feel. Also, the alkyl groups on the polysiloxane have good hydrophobicity and provide moderate hydrophobicity to the polyurethane resin.

  It should be further noted that the content value of ions (ie, anionic groups and neutralizing agents) included in the aqueous-silicone polyurethane resin described above is about 3.0 wt% to 6 wt% of the weight of the aqueous-silicone polyurethane resin. 0.0 wt% is preferable.

  [Aqueous-silicone / fluorine polyurethane resin]

  In addition, another aspect of the aqueous polyurethane dispersion applied to the improved lubrication entry board of the present invention is an aqueous-silicon / fluorine polyurethane resin, which is a silicon fluorine-modified polyurethane resin, a neutralizing agent, and an aqueous phase. The structure of the silicon fluorine-modified polyurethane resin containing a solvent is simultaneously introduced into the main chain of the above-mentioned polyurethane resin by simultaneously introducing a polysiloxane copolymer and a polyfluorocarbon glycol copolymer into an aqueous-silicon / fluorine polyurethane dispersion. It is used to enhance the performance at the time of application. For this reason, it should be noted that the main chain of the silicon fluorine-modified polyurethane resin also includes a group formed from a polyisocyanate and a polymer polyol and a nonionic group, and the side chain of the silicon fluorine-modified polyurethane resin has an anionic group and a nonion group. It is the point which also has the group.

  At the same time, since the fluorocarbon functional group is a molecule having an excellent hydrophobic effect as is well known, it can provide an appropriate hydrophobicity to the polyurethane resin when it is bonded to the main chain of the polyurethane resin by a molecular reaction.

  At the same time, the NCO% reaction titration value of the silicon fluorine-modified polyurethane resin is 50% to 85% of the theoretical value of NCO%, and the polyisocyanate, the polymer polyol, the anion group, the source of the nonionic group, the neutralization The agent and the aqueous phase solvent are substantially the same as those disclosed in the above-mentioned aqueous polyurethane resin.

  In addition, in the embodiment of the present invention, the weight of the water-silicone / fluoropolyurethane resin is 100 wt%, the content of the silicon fluorine-modified polyurethane resin and the neutralizing agent is 30 wt% to 50 wt%, and the water content is 30 wt% to 67 wt%, and the content of the organic solvent is 2 wt% to 25 wt%.

  The properties of the above-mentioned polyfluorocarbon glycol glycol copolymer are similar to those of the polysiloxane copolymer, but the polyfluorocarbon glycol glycol copolymer has a lower surface tension and excellent wear resistance. Therefore, the effect which reduces the abrasion of the above-mentioned contact surface similarly is provided. In addition, the polyfluorocarbon glycol copolymer has hydrophobicity, but also has an excellent release property, so the aqueous-silicone / fluoropolyurethane resin containing the polyfluorocarbon glycol copolymer forms a thin film. After that, when drilling the thin film with a drill bit, it is possible to assist the cleaning of the drill bit by exhibiting the anti-adhesive effect provided by the releasability.

  It should be further noted that the content value of ions (ie, anionic groups and neutralizing agents) included in the aqueous-silicone / fluoropolyurethane resin described above is about 3.0 wt. % To 6.0 wt% is a preferable point.

  Preparation method of aqueous polyurethane dispersion applied to improved lubrication entry board of the present invention

  [First Embodiment: Method for Producing Aqueous Polyurethane Resin]

  First, under an oil bath heating condition (50 ° C. to 100 ° C.), a diisocyanate, polyester glycol, polyether glycol (ethoxy group-containing glycol), and 2,2-dimethylolpropionic acid are sequentially added into a reaction vial, and a synthetic reaction is performed. To obtain a prepolymer, and the reaction time is 1.0 to 5.0 hours, of which 2,2-dimethylolpropionic acid is used as a source of an anionic group, and ethoxy group-containing glycol is used as a source of a nonionic group. In the course of the synthesis reaction, an organic solvent is separately added to the above-described reactant to reduce the viscosity of the reactant.

  It should be noted that the diisocyanates used in the above synthesis reaction are toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), isophorone diisocyanate (IPDI), 4,4′-dicyclohexyl isocyanate. (H12MDI, 4,4′-methylethylene diisocynate), aliphatic diisocyanate (ADI), 1,4-cyclohexane diisocyanate (CHDI), trime 1 to 3 are selected from the group consisting of chilled hexamethylene diisocyanate (TMDI) and 1,3-bis (isocyanatomethyl) cyclohexane (H6XDI, 1,3-Bis (isocyanatomethyl) cyclohexane) Is a point.

  Furthermore, the source of polyester glycol used in the above synthesis reaction is synthesized from two types of monomers selected according to the following rules.

(1) the first class of monomers is adipic acid; and
(2) The second class of monomers is ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, 1,5-diethylene glycol. 1 or 2 is selected from the group consisting of (1,5-diethylene glycol), 1,6-hexanediol (1,6-hexanediol), 1,4-cyclohexanedimethanol (1,4-dimethylcyclohexane) .

  Among them, the molecular weight of the polyester glycol used in this example is 1000 to 3000, and the polyester glycol used is a mixture composed of a combination of 1 to 5 kinds of polyester glycols obtained based on the above rules. .

  Furthermore, the polyether glycols used in the above synthesis reaction are polytetramethylene ether glycol (PTMG, molecular weight 1000 to 3000), polypropylene glycol (PPG, molecular weight 1000 to 5000), and main chain and side chain polyethylene glycol. 1 to 5 are selected from the group consisting of (PEG, molecular weight 200-10000).

  Preferably, polyethylene glycol is used as the ethoxy group-containing glycol, and at this time, the molecular weight of polyethylene glycol used is between 200 and 6000.

  In addition, it should be understood that in the present example, polyester glycol and polyether glycol are simultaneously added to the reaction system as a source of hydrophilic nonionic groups of the polyurethane resin. However, the present invention is not limited to this. In one embodiment, it may be chosen to add only polyester glycol or polyether glycol into the reaction system, and at this time, the synthesis reaction can be completed based on the above reaction conditions to obtain a prepolymer. it can.

  Further, the organic solvent is selected from the group consisting of isopropyl alcohol, sec-butyl alcohol, acetone, methyl ethyl ketone, toluene, N, N-dimethylformamide, N, N-dimethylacetamide.

  Subsequently, when the synthesis reaction proceeds until the NCO% reaction titration value of the prepolymer reaches 50% to 85% of the theoretical value of NCO%, the temperature of the reaction system is lowered to 40 ° C to 60 ° C (the above heating temperature). Is between 50 ° C. and 60 ° C., the temperature drop temperature is between 40 ° C. and the heating temperature value. For example, when the heating temperature is 55 ° C., the temperature drop temperature can be 45 ° C.) Triethylamine is added as a neutralizing agent to form a mixed solution, and the neutralization reaction is performed for about 0.1 hour to 1.0 hour, of which the equivalent concentration of triethylamine is the same as the equivalent concentration of 2,2-dimethylolpropionic acid. is there.

  Subsequently, water is added to the mixed solution and emulsified by high-speed stirring (400 rpm) to obtain an emulsion. Among them, the stirring method is performed using ultrasonic vibration or a mechanical method, and the amount of water added is adjusted based on the content of the above components. It should be noted that in this embodiment, the water content is 30 to 67 parts by weight, and the organic solvent content is 2 to 25 parts by weight.

  After the completion of emulsification, a water-soluble diamine (diamines) as a chain extender is added to the emulsion to conduct a polymerization reaction, and an aqueous polyurethane resin is obtained after the polymerization reaction. Of these, the number of moles of water-soluble diamines to be added and isocyanate The ratio value of the number of moles of the group is 0.1 to 1.0.

  [Second Embodiment: Method for Producing Aqueous-Silicon Polyurethane Resin]

  Under an oil bath heating condition (50 to 100 ° C.), an appropriate proportion of diisocyanate, polyester glycol, polyether glycol, and 2,2-dimethylolpropionic acid are sequentially added into a reaction vial to perform a synthesis reaction, and a reaction time Is 1.0 hour to 5.0 hours. It should be understood that the types and selection conditions of the diisocyanate, polyester glycol, polyether glycol and organic solvent in this example are the same as those in Example 1.

Subsequently, an organic solvent was further added to the above-mentioned reaction product to reduce the viscosity of the reaction product, and a polysiloxane copolymer was added to participate in the synthesis reaction. 0.5 hours to 4.0 hours passed. A post-prepolymer is obtained. In this example, the polysiloxane copolymer is a polytetramethylsiloxane glycol copolymer or a polytetramethylsiloxane diamine (general formula R— (Si (CH ₃ ) ₂ —O) _n —R, R═OH or NH ₂ and a molecular weight of 300 to 10,000).

  Subsequently, when the synthesis reaction proceeds until the NCO% reaction titration value of the prepolymer reaches 50% to 85% of the theoretical value of NCO%, the temperature of the reaction system is lowered to 40 ° C to 60 ° C (the above heating temperature). Is between 50 ° C. and 60 ° C., the temperature drop temperature is between 40 ° C. and the heating temperature value. For example, when the heating temperature is 55 ° C., the temperature drop temperature can be 45 ° C.) Triethylamine is added to form a mixed solution, and a neutralization reaction is performed for about 0.1 to 1.0 hour, in which the equivalent concentration of triethylamine is the same as the equivalent concentration of 2,2-dimethylolpropionic acid.

  Subsequently, deionized water is added to the mixed solution, and the mixture is stirred and emulsified to obtain an emulsion. Among them, the stirring method is performed using ultrasonic vibration or a mechanical method, and the amount of deionized water added is adjusted based on the content of the above components. It should be noted that in this embodiment, the content of deionized water is 30 to 67 parts by weight, and the content of the organic solvent is 2 to 25 parts by weight.

  After the completion of emulsification, a water-soluble diamine is added to the emulsion to perform a polymerization reaction, and an aqueous-silicone polyurethane resin is obtained after the polymerization reaction, of which the number of moles of water-soluble diamines to be added and the number of moles of isocyanate groups The ratio value is 0.1 to 1.0.

  [Third Embodiment: Method for Producing Aqueous-Silicon / Fluoropolyurethane Resin]

  Under an oil bath heating condition (50 to 100 ° C.), an appropriate proportion of diisocyanate, polyester glycol, polyether glycol, and 2,2-dimethylolpropionic acid are sequentially added into a reaction vial to perform a synthesis reaction, and a reaction time Is 1.0 hour to 5.0 hours. It should be understood that the types and selection conditions of the diisocyanate, polyester glycol, polyether glycol and organic solvent in this example are the same as those in Example 1.

Subsequently, an organic solvent is further added to the reaction product to reduce the viscosity of the reaction product, and polysiloxane copolymer and polytetrafluoroethylene diol (general formula HO— (CF ₂ CF ₂ ) n are used. -OH, molecular weight 500-3000) is added to participate in the synthesis reaction, and after 0.5 to 4.0 hours have elapsed, a prepolymer is obtained. It should be understood that the type and selection rule of the polysiloxane copolymer of this example are the same as those of Example 2.

  Subsequently, when the synthesis reaction proceeds until the NCO% reaction titration value of the prepolymer reaches 50% to 85% of the theoretical value of NCO%, the temperature of the reaction system is lowered to 40 ° C to 60 ° C (the above heating temperature). Is between 50 ° C. and 60 ° C., the temperature drop temperature is between 40 ° C. and the heating temperature value. For example, when the heating temperature is 55 ° C., the temperature drop temperature can be 45 ° C.) Triethylamine is added to form a mixed solution, and a neutralization reaction is performed for about 0.1 to 1.0 hour, in which the equivalent concentration of triethylamine is the same as the equivalent concentration of 2,2-dimethylolpropionic acid.

  Subsequently, deionized water is added to the mixed solution, and the mixture is stirred and emulsified to obtain an emulsion. Among them, the stirring method is performed using ultrasonic vibration or a mechanical method, and the amount of deionized water added is adjusted based on the content of the above components. It should be noted that in this embodiment, the content of deionized water is 30 to 67 parts by weight, and the content of the organic solvent is 2 to 25 parts by weight.

  After the completion of emulsification, a water-soluble diamine is added to the emulsion to conduct a polymerization reaction, and after the polymerization reaction, an aqueous-silicone / fluoropolyurethane resin is obtained, of which the number of moles of water-soluble diamines to be added and the moles of isocyanate groups The ratio value of the numbers is 0.1 to 1.0.

  In order to clearly show the composition for producing the aqueous polyurethane dispersion of the present invention in the above-mentioned three embodiments, the following Table 1 specifically shows the contents of the synthetic polyurethane resin compound and the neutralizing agent in each of the above embodiments. Shown in The parts by weight listed in the table below refer to the range of weight percentages contained in the individual raw materials in the non-volatile polyurethane molecules after removing water and solvent from the aqueous polyurethane dispersion.

  Among them, polyether glycol includes glycol containing ethoxy group (polyethylene glycol molecule), and DMPA represents 2,2-bishydroxymethylpropionic acid.

  Improved lubrication entry board of the present invention

  As shown in FIG. 2, the improved lubrication entry board 1a of the present invention includes a base material 3 and a lubricating layer 5 installed on the base material 3, and the base material 3 is a metal such as an aluminum flexible substrate. The lubricating layer 5 may be a flexible substrate, and the lubricating layer 5 may be an aqueous polyurethane dispersion (aqueous polyurethane resin, aqueous-silicone polyurethane resin, or aqueous-silicone / fluoropolyurethane resin) of the present invention obtained using the above-described embodiment. ). Among them, the base material 3 has a thickness of 20 μm to 200 μm, and the lubricating layer 5 has a thickness of 5 μm to 200 μm.

  In the manufacturing method of the improved lubricated entry board 1a, the base material 3 is first prepared.

  Subsequently, a heat dissipation composition is prepared. The heat dissipating composition includes:

  The weight of the aqueous polyurethane dispersion of the present invention is 20 wt% to 60 wt% of the total weight of the heat dissipation composition.

  Four of the following compounds are selected to form the other components of the heat dissipation composition: (a) polyvinyl alcohol (partially unsaponified), parts by weight 5-40, (b) sodium polyacrylate Polymer, parts by weight 0.5 to 10, (c) Carbomer, parts by weight 0.2 to 5, (d) polyvinylpyrrolidone and vinyl acetate copolymer, parts by weight 5 to 50, (e) average molecular weight 1000 or more polyethylene glycol, 30 to 75 parts by weight, (f) water-soluble polyethylene oxide (molecular weight 50,000 to 500,000), 20 to 40 parts by weight, (g) polypropylene glycol having an average molecular weight of 2000 or more, 2 to 20 parts by weight (H) nonionic emulsifier having an HLB value of 4.3 to 20, 0.05 to 10 parts by weight.

  Subsequently, the heat dissipation composition is placed in a reactor, and the heat dissipation composition is stirred at a temperature of 15 ° C to 45 ° C for 4 to 8 hours to disperse the components therein.

  Finally, using a blade coating, slot die coating, spin coating, precision coating, UV curable coating or double roller / triple roller coating, the heat dissipating composition is applied onto the substrate 3, and the heat dissipating composition is When dried and cured, the lubricating layer 5 is formed, and the improved lubricating entry board 1a of the present invention is completed.

  Improved lubrication entry board with improved edge structure of the present invention

  Solvent anti-slip treatment lubrication entry board

  A mixed solvent with a volume ratio of 40% isopropyl alcohol, 40% acetone, and 20% water is prepared and applied to the 5 mm edge of the lubricating layer of a commercially available lubricating entry board. 3 minutes after leaving the lubricating entry board to dissolve the lubricating layer of the lubricating entry board by wiping the edge of the lubricating layer of the lubricating entry board with a dry cloth and removing the solvent, the solvent slip prevention shown in FIG. A treated lubrication entry board 1b is obtained. The solvent anti-slip treatment lubrication entry board 1b includes a base material 3, a lubrication layer 5, and a partially removed lubrication layer 7. The presence of the partially removed lubrication layer 7 makes the solvent anti-slip treatment lubrication entry. The board 1b can be stuck on the drilling machine with a fixing tape more stably during the drilling process.

  FIG. 4 shows a usage state of the solvent anti-slip treatment lubrication entry board 1b according to the second embodiment of the present invention. Among them, a backup board 11, one or a plurality of printed wiring boards 13 to be drilled, and a solvent anti-slip treatment lubricated entry board 1 b are arranged in order from the bottom on the punching machine 17. Due to the presence of the partially removed lubricating layer 7, the adhesiveness of the surface of the solvent anti-slipping treatment lubrication entry board 1b to the fixing tape 15 is enhanced, and the solvent anti-slipping treatment lubrication entry board 1b can be more stable. It can be fixed on the drilling machine 17.

  The solvent in the present embodiment is not limited to specific components and ratios, and may be any solvent as long as it has the ability to dissolve the lubricating layer. The solvent is an alcohol (methanol, ethanol or isopropyl alcohol), a ketone (acetone or methyl ethyl ketone). Or it is preferable to select from the group comprised from water.

  In this embodiment and the following Examples 3 to 7, the range for applying the anti-slip treatment is not limited to the 5 mm edge of the lubrication layer of the lubrication entry board. In order to obtain a good anti-slip effect, the lubrication entry board It is preferable to apply to the edge of the lubricating layer of 0.1 mm to 10 mm.

  Non-slip treatment lubricated entry board with increased viscosity and surface roughening

  A commercially available PVA (polyvinyl alcohol) paint can be used to increase the viscosity and roughen the surface. The paint can be applied to the 5 mm edge of the lubricating layer of a commercially available lubrication entry board. 5 is obtained until the non-slip treated lubrication entry board 1c with increased viscosity and surface roughening is obtained. The material 3, the lubricating layer 5, and the viscosity increasing / surface roughening coating layer 9 are included. Since the increased viscosity / surface roughened coating layer 9 can provide the adhesiveness of the fixing tape more preferable than the lubricating layer 5, the non-slip treated lubricated entry board 1c having increased viscosity / surface roughened is more stable in the drilling process. Alternatively, it can be affixed onto a drilling machine with a fixed tape.

  FIG. 6 shows the state of use of the anti-slip treated lubricated entry board of Example 3 of the present invention with increased viscosity and surface roughening. Among them, a backup board 11, one or a plurality of printed wiring boards 13 to be drilled, and a viscosity-enhanced / surface-roughened anti-slip treatment lubricated entry board 1 c are arranged on top of the punching machine 17 in order from the bottom to the top. Due to the presence of the increased viscosity / surface roughened coating layer 9, the surface of the anti-slip treated lubricated entry board 1c having increased viscosity / surface roughened is improved in adhesion to the fixing tape 15, and the increased viscosity / surface roughened. The anti-slip treatment lubricated entry board 1c can be more stably fixed on the punching machine 17.

  The material for increasing the viscosity and roughening the surface in this embodiment is not limited to PVA paint, but a paint selected from the group consisting of PVA, PVP, acrylic, epoxy resin or PU as a main component is preferable.

  Tape anti-slip treatment lubrication entry board

  Use a commercially available masking tape to make a non-slip tape, cut to a width of 5 mm, affix to the edge of the lubrication layer of a commercially available entry board, and a non-slip treatment lubrication with a masking tape attached to the edge An entry board is obtained. In the drilling process, the tape anti-slip treated lubricated entry board is more stably placed on the drilling machine by applying the anti-slip tape and the fixing tape in a double manner. Can be fixed.

  Roughening anti-slip treatment lubrication entry board

  Polishing with a roughening roller or cutting with a knife removes the 5 mm edge of the lubricating layer of the commercially available lubricating entry board. As a result, a roughened anti-slip treatment lubricated entry board having a roughened edge by a physical method is obtained. Due to the roughening of the edge, the roughened anti-slip treated lubricated entry board can be more stably affixed on the drilling machine with a fixing tape in the drilling process.

  Heat source anti-slip treatment lubrication entry board

  A hot air machine or a hot press machine is used to process the 5 mm edge of the lubricating layer of a commercially available lubricating entry board. At least a part is dissolved by a heat source, and the lubricating layer of the entry board is removed. By removing the lubricating layer, the heat source anti-slip treated lubricated entry board can be more stably affixed on the drilling machine with a fixing tape in the drilling process.

  Application in Mass Production of Non-Slip Lubrication Entry Board in Non-slip Treatment of Examples 2-6

  In accordance with the mass production of non-slip lubricated entry board, the raw materials and equipment used for the above-mentioned anti-slip lubrication entry board are integrated into any process of the above-mentioned non-slip lubricated entry board production flow, or it is an independent non-slip treatment process be able to. Preferably, the anti-slip process is integrated during the cutting process, and a device capable of performing the anti-slip process is attached to the cutting machine. Solvent application device and wiping roller according to Example 1, application device for increasing viscosity and surface roughening coating material according to Example 2, tape applying device according to Example 3, roughening roller according to Example 4 And a hot air machine or a hot press machine according to the fifth embodiment. Due to the integration of the anti-slip treatment, industrial mass production of the anti-slip lubrication entry board of the present invention is possible.

DESCRIPTION OF SYMBOLS 100 Conventional lubrication entry board 101 Base coat layer 103 Base material 105 Lubrication layer 1a Improved lubrication entry board 1b Solvent non-slip treatment lubrication entry board 1c Non-slip treatment lubrication entry board 3 having increased viscosity and surface roughening Base material 5 Lubrication layer 7 Partially removed lubricating layer 9 Increased viscosity / surface roughened coating layer 11 Backup board 13 Printed wiring board 15 Fixing tape 17 Drilling machine

Claims (10)

  An improved lubrication entry board comprising a base material and a lubrication layer coated on the base material, wherein no base coat layer is provided between the base material and the lubrication layer. .   At least one edge of the lubrication layer further comprising an improved edge structure to reduce fixation instability caused by the lubrication layer when securing the improved lubrication entry board; The improved lubrication entry board according to claim 1, wherein the edge structure is formed by applying a non-slip treatment to at least one edge of the lubrication layer.   3. The improved lubrication entry board according to claim 2, wherein the anti-slip process is a process of wiping after applying a solvent to the edge of the lubrication layer and removing at least a part of the lubrication layer. 4. .   The anti-slip treatment is a treatment for applying a material for increasing the viscosity and roughening the surface to the edge of the lubricating layer, and forming an increased viscosity / surface roughened coating layer on the edge of the lubricating layer. The improved lubrication entry board according to claim 2, wherein:   The improved lubrication entry board according to claim 2, wherein the anti-slip process is a process of applying an anti-slip tape to an edge of the lubricating layer.   The improved lubrication entry board according to claim 2, wherein the anti-slip treatment is a treatment of roughening a margin of the lubricating layer using a physical method.   The improved lubrication entry board according to claim 6, wherein the physical system is a process of performing a roughening process on an edge of the lubricating layer using a roughing roller or a knife.   The improved lubrication entry board according to claim 2, wherein the anti-slip treatment is a treatment of removing at least a part of the lubricating layer using a heat source.   The improved lubrication entry board according to claim 8, wherein the heat source is hot air or hot press.   The improved lubricating entry board according to any one of claims 2 to 9, wherein a width of the improved edge structure is 0.1 mm to 10 mm.

Images