WO2005002796A1 - ブラスト処理方法 - Google Patents
ブラスト処理方法 Download PDFInfo
- Publication number
- WO2005002796A1 WO2005002796A1 PCT/JP2004/009141 JP2004009141W WO2005002796A1 WO 2005002796 A1 WO2005002796 A1 WO 2005002796A1 JP 2004009141 W JP2004009141 W JP 2004009141W WO 2005002796 A1 WO2005002796 A1 WO 2005002796A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin
- blasting
- blast
- powder
- compressed gas
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
- B24C11/005—Selection of abrasive materials or additives for abrasive blasts of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
Definitions
- the present invention relates to a blasting (Abrasive Blasting) method for mainly removing a coating film of a coated resin product, and more particularly to a blasting method capable of realizing a good surface finish enabling repainting (reuse). .
- inorganic fillers such as alumina-silica, carbon black, calcium carbonate, magnesium carbonate, tanolek, clay, glass fibers, glass balloons, metals, iron oxide and iron oxide-containing compounds are used for melamine resin, urea resin,
- a projection material made of a composite resin mixed with a thermosetting resin such as a phenol resin, a ketone resin, an epoxy resin, and a guanamine resin is disclosed (for example, see Patent Document 2).
- thermosetting resin material for example, see Patent Document 3
- a synthetic resin into which an ionic group is introduced for example, Patent Document 4
- thermosetting resin blended with thermoplastic resin for example, see Patent Document 5
- base resin blended with rubber component for example, see Patent Document 6
- base resin See, for example, Patent Document 7
- a material in which an antistatic agent is added to the base resin see, for example, Patent Document 8
- a projection material with low static electricity for example, see Patent Document 7
- Reference 9 is disclosed, but blast treatment methods that can achieve a good surface finish that enables repainting (reuse) have not yet been established.
- Patent Document 1 JP-A-5-117635
- Patent Document 2 JP-A-2001-277128
- Patent Document 3 JP-A-2001-277122
- Patent Document 4 JP-A-2001-277123
- Patent Document 5 JP-A-2001-277124
- Patent Document 6 JP-A-2001-277125
- Patent Document 7 JP 2001-277129 A
- Patent Document 8 JP 2001-277131 A
- Patent Document 9 Japanese Patent Application Laid-Open No. 2001-300851
- the present invention has been made in view of the above-mentioned problems, and has provided a resin molded product having relatively softness and low hardness as compared with a metal product without causing excessive IJ damage to the surface.
- a blasting method capable of completely removing and removing adhered matter such as a coating film, foreign matter, and dirt, and achieving a surface finish state such that a resin molded product after removal can be repainted as it is.
- the blast processing method of the present invention for achieving the above object is as follows.
- the resin blast material in a blasting process of projecting a resin blast material to remove a coating film of a coated resin product, has an average particle diameter of 20-180 / m, A blast treatment method for a coated resin product, wherein the surface roughness (R) of the resin product after removing the coating film is 3.0 ⁇ m or less.
- the resin projecting material comprises a melamine resin, a urea (urea) resin, a phenol resin, a ketone resin, an epoxy resin, a guanamine resin, and a thermosetting resin comprising these resins.
- the resin projecting material is a projecting material obtained by filling a thermoplastic resin with 5-75% by mass of metal-based particles
- the thermoplastic resin is made of nylon Resin, polycarbonate resin, ABS resin, polypropylene resin, polyethylene terephthalate (PET) resin, polyolefin (TPO) resin, polyurethane (TPU) resin, polystyrene resin, and rubber resin.
- the metal-based particles comprise at least one of ferrite, iron oxide, titanium oxide, barium, tungsten, SUS, zinc, copper, alumina, magnesium, and zirconia.
- a fourth aspect of the present invention is characterized in that the specific gravity of the resin projectile is 1.3-6.0.
- the blasting method according to any one of the first to third aspects described above.
- a fifth aspect of the present invention is the blasting process according to any one of the first to fourth aspects, wherein the hardness of the resin projectile is 2.0 or more in Mohs hardness. Is the way
- the surface roughness (R) of the resin product after the removal of the coating film is 2. O x m a
- a powder of the resin blast material is sealed in a powder pressure feeding tank, compressed gas is fed into the tank, and pressure feeding is performed from an outlet provided at the bottom of the tank.
- a direct pressure blast method in which the shot material powder is injected together with a compressed gas from a nozzle, wherein the pressure of the compressed gas is 0.1-0.7 MPa and the projection angle is 20 90 °.
- a blast processing method according to any one of the first to sixth aspects described above.
- the powder of the resin projecting material is charged into a powder suction tank at a position lower than the nozzle, and is provided at the tank bottom by suction of compressed gas (suction).
- the outlet force is a siphon blast method in which the sucked shot material powder is sprayed with a compressed gas by a nozzle force, wherein the pressure of the compressed gas is 0.1—1 OMPa and the projection angle is 20—90. 7.
- the blasting method according to any one of the first to sixth aspects, wherein
- the material of the resin product subjected to the blast treatment is ABS resin, polyurethane resin, polypropylene resin, polyethylene resin, polyetheretherketone resin, or polyphenylene sulfide (PPS).
- the present invention it is possible to completely peel off and remove a coating film and a dirt deposit on a coated resin product without excessively damaging the surface of the object to be processed.
- the surface finish is good, and it is possible to provide a blasting method that enables repainting (reuse) as it is.
- the average particle diameter of the resin blast material is 20-180 / im, and Coating characterized by having a surface roughness (R) of 3.0 ⁇ m or less after removal of the coating film
- the X axis is taken in the direction of the average line of this part
- the Y axis is taken in the direction of the vertical magnification
- the value obtained by is expressed in micrometer ( ⁇ ).
- the finished state of the surface of the resin product from which the coating film has been removed is 3.0 ⁇ m or less in surface roughness (R) as described above.
- the blast treatment method of the present invention is used to remove only one layer of a coating consisting of several layers, or to remove two or more intermediate layers, and to remove all layers up to a base layer. It can be applied to the case where the error occurs and the error occurs.
- thermosetting resin (Projection material of thermosetting resin)
- thermosetting resins As the resin blast material used in the blasting method of the present invention, a resin blast material made of various thermosetting resins can be used. Among them, melamine resin, urea (urea) resin, phenol resin, keto resin Resin, epoxy resin, guanamine resin, and at least one of thermosetting resins composed of these copolymer resins are preferred.
- the resin may be composed of only one type of resin, or may be a mixture of two or more types of granular projection materials composed of a single resin described above. That is, in this embodiment, each of the particles constituting the blast material is made of one kind of the above resin.
- the projection material may be composed of an aggregate of a single type of particles as a whole, or may be composed of an aggregate of a plurality of types of particles.
- thermosetting resins a shot material made of a melamine resin is particularly excellent in heat resistance and impact resistance. Projectiles made of urea resin are particularly excellent in impact resistance. Projection materials made of phenolic resin are particularly excellent in heat resistance. Projectiles made of ketone resin are particularly excellent in abrasion resistance. A projectile made of an epoxy resin is particularly excellent in heat resistance and water resistance. Projectiles made of guanamine resin are particularly excellent in impact resistance.
- the shot material comprising the thermosetting resin of the present invention is a blend of a melamine resin and one or more of a urea resin, a phenol resin, a ketone resin, an epoxy resin, and a guanamine resin.
- the individual particles of the blast material consist of a blend of a melamine resin and one or more of the above.
- the blend ratio of the melamine resin in each of the individual particles is preferably 20 to 80% by mass. If the blend ratio is less than 20, it may be difficult to achieve both heat resistance and impact resistance. If the blend ratio is more than 80, the shot material is expensive and is economically disadvantageous.
- the blasting material may be composed of an aggregate of particles having a uniform composition as a whole.
- particles A composed of a blend of a melamine resin and a urea resin
- It may be composed of an aggregate of particles having different compositions such as a shot material composed of a mixture with particles B composed of a blend with a phenol resin.
- Two or more resins may be blended with the melamine resin.
- a shot material according to another embodiment of the present invention is made of a copolymer of a melamine resin and one or more of a urea resin, a phenol resin, a ketone resin, an epoxy resin, and a guanamine resin. That is, a melamine resin and one or more other resins are mixed and copolymerized. Also in this case, all the particles constituting the shot material have a uniform composition. And may be composed of an aggregate of particles having different compositions.
- the copolymerization ratio of the melamine resin is preferably 20 to 80 mol%. If the copolymerization ratio is less than 20 mol%, it may be difficult to achieve both heat resistance and impact resistance, and if it is greater than 80 mol%, the shot material is expensive and disadvantageous.
- a shot material according to another embodiment of the present invention is made of a copolymer of melamine and one or more of urea, phenol, ketone, epoxy, and guanamine. That is, it has a composition obtained by copolymerizing a melamine monomer with the other monomers described above.
- the ratio of the melamine monomer is preferably 2080 mol%. Similarly to the above, if this ratio is less than 20 mol%, it may be difficult to achieve both heat resistance and impact resistance. If it is more than 80 mol%, the shot material is expensive and disadvantageous.
- the resin blasting material used in the blasting method of the present invention may be a composite of a thermosetting base resin and an inorganic filler as described above.
- the inorganic filler include fibrous materials such as anolemina, silica, carbon black, calcium carbonate, magnesium carbonate, talc, clay, glass fiber, glass balloon, metal, iron oxide, and compounds containing iron oxide (ferrite, etc.).
- fibrous materials such as anolemina, silica, carbon black, calcium carbonate, magnesium carbonate, talc, clay, glass fiber, glass balloon, metal, iron oxide, and compounds containing iron oxide (ferrite, etc.).
- One or more of granular and crushed materials are suitable.
- the specific gravity, hardness, and the like of the projectile can be selected and adjusted according to the properties of the projecting object, the purpose of the blast treatment, and the like. Wear.
- the specific gravity is preferably 1.3-1.7 force S, and the Rockwell hardness is preferably 100-130.
- alumina, silica, and glass fibers have high hardness and are suitable for relatively strong blasting. Since calcium carbonate, magnesium carbonate, talc and clay have low hardness, they are suitable for relatively soft blasting. Glass balloons are suitable for blending when reducing the specific gravity of the shot material. When carbon black is mixed, the shot material can be made conductive.
- the particle size of these inorganic fillers is preferably about 5 to 100 ⁇ m.
- an inorganic filler alumina, silica, carbon black, calcium carbonate, magnesium carbonate, talc, clay, glass fiber, glass balloon, metal, metal oxide, fibrous material of compound containing iron oxide (ferrite, etc.) , Granules, crushed materials, etc.
- the material can be adjusted to a suitable specific gravity.
- the compounding of spherical, crushed, or fibrous compounds containing iron oxide or iron oxide (ferrite, etc.) can prevent the generation of static electricity during the crushing process during sizing of the blasting material and during blasting. In any case, removal of the coating film by blasting can be improved.
- pigments containing iron oxide or a compound containing iron oxide specifically, ⁇ -Fe ⁇ OH, j3_Fe ⁇ OH, ⁇ _Fe ⁇ OH, ⁇ _Fe ⁇ , ⁇ -Fe ⁇ , Fe ⁇ , MoFe ⁇ ,
- the filler composed of a metal or a pigment containing iron oxide or a compound containing iron oxide (such as ferrite) preferably has a particle size of 10 am or less, more preferably 5 am or less, and still more preferably 1 ⁇ m or less. And more preferably 0.005 lxm.
- the amount of the inorganic filler is preferably 0.1 to 20 parts by mass, more preferably 1 to 15 parts by mass, and particularly preferably 3 to 10 parts by mass with respect to 100 parts by mass of the base thermosetting resin. It is. If the amount of the inorganic filler is less than 0.1 part by mass, the surface of the projection cannot be sufficiently removed, and if the amount is more than 20 parts by mass, the removal becomes too strong.
- the amount of the filler depends on the purpose of blending.
- the force is also preferably 10 parts by mass or less, particularly preferably 0.001 to 1 part by mass with respect to 100 parts by mass of the base resin.
- an organic filler may be combined with 100 parts by mass of a thermosetting resin as a base material.
- a thermosetting resin for example, one or more of cellulose, a cellulose derivative, heart cellulose, and wood flour are preferable.
- the toughness of the shot material can be increased. If the compounding amount of the organic filler exceeds 50 parts by mass, the particle strength of the blast material becomes too low.
- the ability to sufficiently obtain the above-mentioned effects by blending at least 5 parts by mass is preferably 10 to 40 parts by mass, particularly preferably 2030 parts by mass.
- the particles constituting the blast material may be all of a uniform composition or may be an aggregate of particles of different compositions.
- thermoplastic resin is nylon-based Resin, polycarbonate resin, ABS resin, polypropylene resin, polyethylene terephthalate (PET) resin, polyolefin (TPO) resin, polyurethane (TPU) resin, polystyrene resin, and rubber resin
- thermoplastic resin Z metal for blast treatment wherein the metal-based particles are made of at least one of ferrite, iron oxide, titanium oxide, norium, tungsten, SUS, zinc, copper, anoremina, magnesium, and zirconia. Composite projectiles of system particles can be suitably used.
- the nylon-based resin used in the present invention is a polyamide-based thermoplastic resin, specifically, nylon 6 resin, nylon 66 resin, nylon 6-based copolymer resin, nylon 12 resin, and modified products thereof. Resins and derivative resins.
- the nylon resin preferably has an MFI (melt flow index) of 1.5 to 10 according to ASTM D1238G standard (235 ° C, 2160 g load).
- the projection material using the nylon resin as a binder is particularly tough and excellent in abrasion resistance, heat resistance and impact resistance.
- the above-mentioned polycarbonate resin is a heat-sensitive resin represented by the general formula (1-O-R- ⁇ 1-CO-).
- the MFI of the polycarbonate resin is preferably 2.0 to 16 according to the ASTM D1238G standard (280 ° C., 2160 g load).
- the shot material using the polycarbonate resin as a binder is particularly high in rigidity and excellent in heat resistance and impact resistance.
- the ABS resin is a thermoplastic resin of a copolymer system of acrylonitrile, butadiene and styrene, and can be selected from various commercially available ABS resins.
- the MFI of the ABS-based resin is preferably 3.0 to 33 in accordance with ASTM D1238G standard (220 ° C, condition of lOKg load).
- the blasting material using the polycarbonate resin as a binder can be easily formed at a relatively low cost with easy molding such as kneading and extrusion, and has heat resistance and impact resistance. To do.
- the polypropylene (PP) resin is a crystalline stereoregular PP polymer, and can be used by selecting from various commercial ABS resins.
- the MFI of the PP resin is preferably 0.4 to 40 according to ASTM D1238G standard (230.C, 2160g load condition).
- the shot material using the PP resin as a binder can be easily formed by kneading or extrusion, and can be manufactured at relatively low cost. It also has chemical resistance, high strength, and excellent heat resistance and impact resistance.
- PET resin polyethylene terephthalate (PET) resin
- various commercially available PET resins can be selected and used.
- the shot material using the PET resin as a binder has some difficulty in moldability, but is extremely tough, has water resistance, and is excellent in heat resistance and impact resistance.
- the polyamideimide resin is a thermoplastic resin having an amide bond and an imide bond force, and among these, a polyamideimide resin containing an aromatic ring is particularly preferable.
- the hardness of the polyamide-imide resin is ASTM D785 standard (23 ° C, H
- the shot material using the polyamideimide resin as a binder is particularly high in rigidity and excellent in heat resistance, mechanical strength, abrasion resistance, chemical resistance and the like.
- polyolefin (TPO) -based resin examples include polyethylene, halogenated polyethylene, polyvinyl chloride, polyvinyl chloride chloride, polyvinyl alcohol, ethylene vinyl acetate copolymer, ethylene vinyl alcohol copolymer, and ethylene vinyl alcohol.
- TPO polyolefin
- examples thereof include a butyl chloride copolymer and the like, which can be appropriately selected from various commercially available polyolefin resins.
- ASTM MFI of the polyolefin resin
- the shot material using the polyolefin-based resin as a binder has the advantages that the molding force such as kneading and extrusion can be easily manufactured and relatively inexpensive, and that the specific gravity and hardness can be reduced and the level can be varied widely. is there.
- the polyurethane-based resin is a thermoplastic resin represented by the general formula (I-OCO_NH_B_NH_CO ⁇ _) obtained by polymerizing a polyol (A) and a diisocyanate (B);
- thermoplastic polyurethane resin in which the polyol (A) is bisphenol A is preferable.
- Projection material using the polyurethane resin as a binder, particularly metal-based particles and a binder can be a tough and tenacious projectile with strong adhesion.
- the polystyrene resin is a homopolymer of a styrene monomer and a copolymer with another monomer, and the MFI of the polystyrene resin is ASTM D1238G standard (200.C, 5000 g load). Condition), 1.0 32 things are preferred.
- a shot material using the polystyrene resin as a binder can be easily formed at a relatively low cost because of easy forming such as kneading and extrusion, and the hardness can be widely changed from medium to high.
- Examples of the rubber-based resin include general-purpose rubbers such as NR, IR, SBR and BR, and CR and II
- It is a rubber-based thermoplastic resin, and various commercially available rubber-based thermoplastic resins can be used as appropriate.
- the shot material using the rubber-based thermoplastic resin as a binder can be used as a shot material having a low specific gravity and a low hardness, so that it is suitable for applications in which damage and deformation of an object to be blasted must be minimized.
- thermoplastic resins When two or more kinds of thermoplastic resins are used as the blasting material of the present invention, even if two or more kinds of resins are blended or two or more kinds of resins are copolymerized. It may be obtained by copolymerizing two or more types of resin monomers.
- Examples of the metal-based particles used in the present invention include metal particles, metal oxides, metal nitrides, metal sulfides, and the like. Among these, ferrite, iron oxide, titanium oxide, barium, tungsten, Sus, zinc, copper, anolemina, magnesium, zirconium, etc. One selected from one or a combination of two or more is preferred.
- the average particle size of the metal-based particles is preferably about 0.1 to 500 / im force S, more preferably 0.5 to 300 / im force S, and most preferably 1.0 to 100 / im. .
- the metal-based particles may be kneaded or dispersed in the thermoplastic resin binder as they are, but when the metal-based particles are highly filled, or When the miscibility with the plastic resin is insufficient, the surface of the metal-based particles is preferably subjected to a coupling treatment using an appropriate coupling agent.
- a silane coupling agent is preferable, and an alkyl titanate or the like can also be used.
- silane coupling agent examples include a bull-based silane coupling agent (burtrichlorosilane, burtrimethoxysilane, burtriethoxysilane, burtris (/ 3methoxyethoxy).
- silane examples include a bull-based silane coupling agent (burtrichlorosilane, burtrimethoxysilane, burtriethoxysilane, burtris (/ 3methoxyethoxy).
- silane silane
- epoxy silane coupling agent (; 3_ (3,4 epoxycyclohexyl) ethyltrimethoxysilane, ⁇ _glycidoxypropyltrimethoxysilane, ⁇ _glycidoxyp ⁇ -glycidoxypropyltriethoxysilane), methacrylo
- amino-based silane coupling agent ( ⁇ (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane, N_j3 (aminoethyl) ⁇ _aminopropyltrimethoxysilane, N — J3 (aminoethyl) ⁇ -aminopropyltriethoxysilane, ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ -phenyl- y- aminopropyltrimethoxysilane)), Silane coupling agent (y-methyl propyl trimethoxy silane), mercapto silane coupling agent ( ⁇ - mercapto propyl trimethoxy silane), atalyloxy silane coupling agent (3- at lip mouth pill trimethoxy silane) ), Isocyanate silane coupling agent
- the metal particles to be filled have a magnetic force that does not affect the projection.
- dust generated during blasting can be prevented from adhering to each other and scattering, helping to improve the working environment. It is convenient to do.
- the metal-based particles for giving a magnetic force include metal oxide, ferrite, iron oxide, and Sus.
- the specific gravity and hardness of the blasting blasting material are determined by appropriately selecting and adjusting the type and filling amount of the metal-based particles, and the surface properties of the object to be treated, the purpose of the blasting treatment, and the like. Can be set and controlled in accordance with
- a high specific gravity blasting blasting material in which high hardness and high rigidity metal-based particles are selected or in which the filling amount of metal-based particles is increased has a high hardness, so that the projecting target is strong. It is suitable when relatively strong blasting is required.
- low-hardness and low-rigidity blasting blasting materials that use low-hardness, low-rigidity metal-based particles or reduce the amount of metal-based particles filled are low in hardness, so that the projectile is flexible and can be used for comparison.
- Blasting software It is suitable for processing.
- the shape of the metal-based particles such as ferrite, iron oxide, titanium oxide, barium, and tungsten is not particularly limited, and any of granules, flakes, fibrous materials, and crushed materials can be used. it can.
- spherical, crushed or fibrous metal-based particles it is possible to prevent the crushing step at the time of sizing the shot material and the generation of static electricity at the time of the shot. It can improve the effects of polishing, coating film removal, dirt removal, etc. by processing.
- pigments containing iron oxide or a compound containing iron oxide specifically, HiFe 0 FeH, / 3-FeOOH, ⁇ _FeOOH, _FeO, ⁇ _Fe ⁇ , Fe O, MoFe O, M
- the filler made of a metal or a pigment containing iron oxide or a compound containing iron oxide (such as ferrite) has a particle diameter of preferably 10 ⁇ or less, more preferably 5 ⁇ or less, and further preferably 1 ⁇ or less. m or less.
- the filling amount of the metal-based particles is preferably from 5 to 75% by mass using a thermoplastic resin as a binder.
- the filling amount of the metal-based particles is more preferably from 7 to 65% by mass, most preferably from 10 to 55% by mass. If the filling amount is less than 5% by mass, the coating film on the object to be treated cannot be sufficiently removed or the removal process may take a long time, which is not preferable.
- a filler having a filling amount of more than 75% by mass is not desirable because workability such as kneading, extrusion, and pulverization may deteriorate.
- the composite blasting material for blast treatment of the present invention further includes an organic filler, an inorganic filler, an antistatic agent, an antioxidant, an antioxidant, a pigment, and the like, as long as the effects of the present invention are not impaired. May be added.
- the organic filler include one or more of cellulose, a cellulose derivative, heart cellulose, and wood flour.
- the toughness of the shot material can be increased. If the amount of the organic filler is more than 50 parts by mass, the particle strength of the blast material becomes too low.
- the above effect can be sufficiently achieved by blending at least 5 parts by mass.
- Ability to obtain S Ability to be obtained In particular, it is preferable to mix 10 to 40 parts by mass, especially 20 to 30 parts by mass.
- the particles constituting the blasting material of the present invention may be all of a uniform composition or may be an aggregate of particles of different compositions.
- the projecting material powder made of a thermoplastic resin is capable of reusing the recovered projecting material powder as it is. Once again melted into a thermoplastic resin mass (vanolec) or pellets, again crushed or crushed by a crusher or crusher, and sized to the desired particle size, again having the same quality as the original shot material itself A shot material powder is obtained.
- the surface roughness (R) after the removal while increasing the efficiency of the coating film removal A resin projectile having an average particle size of 20-180 / im is used.
- the average particle size is preferably 25-170 / im, more preferably 30-160 ⁇ 160 ⁇ . If the average particle diameter of the resin blast material is less than 0 ⁇ m, the efficiency of the blasting process is low, and a long blasting process is required to remove the target coating film. On the other hand, if the average particle size exceeds 180 / im, unevenness occurs in the blasting effect, making it difficult to control the surface roughness (R) to 3.0 ⁇ m or less.
- the blasting method of the present invention can be applied to removing the coating film of all the coated resin products, which is not limited by the type of the coating material and the type of the molding resin. Among them, especially when the material of the resin product to be blasted is ABS resin, polyurethane resin, polypropylene resin, polyethylene resin, polyetheretherketone resin, or polyphenylene sulfide (PPS) resin, coating film removal In this case, the blasting method of the present invention is suitably used.
- a specific example is blast treatment for removing coating of a resin molded product such as urethane or ABS resin, and examples of the coating film include urethane coating and acrylic coating. Of course, other than this may be used.
- resin molded products include automobile bumpers, door mirrors, spoilers, pleasure boats, and the like.
- the shot material used in the present invention can be easily sized to an arbitrary particle size.
- a projectile with a thick coating a projectile with a relatively large particle size, specifically a projection material with a particle size of 100 to 180 zm, is used.
- high-end products such as resin products, electronic parts, and molded products, it is possible to use or separate projectiles with relatively small particle sizes, specifically, to use projectiles with a particle size of 20 to 100 ⁇ m. Desired ,.
- the blasting method of the present invention as a method of spraying the blasting material powder together with the gas flow, a force that can be commonly used in various blasting methods can be used.
- a dry blasting method is used. Preferred from the viewpoint of working environment and post-processing cleaning.
- (1) the powder of the blasting material is put into a powder tank at a position higher than the nozzle, and the powder that has fallen into the discharge port provided at the bottom of the tank by gravity is injected from the nozzle together with compressed gas.
- the blasting material powder is sealed in a powder pressurizing tank, compressed gas is fed into the tank, and the outlet force provided at the bottom of the tank.
- Direct pressure blast method in which the powder is sprayed from the nozzle to the nozzle.
- the powder is introduced into the powder suction tank located at a position lower than the nozzle, and the outlet force provided at the bottom of the tank is discharged by suction of compressed gas (suction).
- a (4) centrifugal blast method in which the blasting material powder is sprayed at a high speed together with a fluid flow using a centrifugal method.
- the blast treatment method of the present invention is the direct pressure blast method of (2) above, wherein the pressure of the compressed gas is 0.1 to 0.7 MPa and the projection angle is 20 to 90 °. And (3) the siphon blast method, wherein the pressure of the compressed gas is 0.1-1. OMPa and the projection angle is 20 90 °. It is particularly preferable from the viewpoint of efficiency and surface finish after removal.
- Compressed air is generally used as the compressed gas used above.
- the amount of powder for blasting, the pressure of the compressed gas, and the injection speed should be appropriately selected according to the type and shape of the powder used, the state of the adhered substance on the surface of the target resin product, etc.
- the blasting material powder used for the blasting process is subjected to a conventional post-processing such as cyclone. It can be separated and collected from attached substances using equipment, and can be reused.
- the resin blasting material used in the blasting method of the present invention can be obtained by adjusting the above-mentioned thermosetting resin or composite thermoplastic resin to a desired particle size. Specifically, for example, a lump (ingot) of the (composite) resin is pulverized and sized to a desired particle size to obtain a shot material of the present invention.
- thermosetting resin A mixture of 60 parts (1 mol) of urea (100 mol) and 100 parts (2 mol) of a 30% aqueous formaldehyde solution is adjusted to a pH of 9 to 10, heated, and reacted under reflux to obtain a thermosetting resin. A urea resin was obtained. After drying, a curing agent was added and heated and cured, and the obtained lump (ingot) was pulverized and classified to obtain a desired resin blasting material having an average particle diameter of 80 ⁇ m.
- the above resin blast material was sprayed with a compressed air (0.5MPa) using a siphon blast method onto a urethane-coated ABS resin molded product at a projection angle of 50 ° for 30 seconds.
- the blast treatment according to the present invention was performed.
- the surface roughness (R) of the molded product surface due to the blast treatment was measured in the same manner, and the surface condition of the projection target was visually observed. The results are shown in Table 1 below.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-189399 | 2003-07-01 | ||
JP2003189399 | 2003-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005002796A1 true WO2005002796A1 (ja) | 2005-01-13 |
Family
ID=33562289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/009141 WO2005002796A1 (ja) | 2003-07-01 | 2004-06-29 | ブラスト処理方法 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2005002796A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008229809A (ja) * | 2007-03-23 | 2008-10-02 | Fuji Seisakusho:Kk | 被膜形成部の下地処理方法 |
JP2009154268A (ja) * | 2007-12-27 | 2009-07-16 | Disco Abrasive Syst Ltd | ウォータージェット加工装置の処理方法 |
CN112811840A (zh) * | 2021-01-07 | 2021-05-18 | 上海应用技术大学 | 一种利用回收聚氨酯处理海砂的方法 |
WO2022162182A1 (de) * | 2021-01-28 | 2022-08-04 | Dyemansion Gmbh | Kunststoffstrahlmittel sowie verwendung eines kunststoffstrahlmittels |
WO2022162173A1 (de) * | 2021-01-28 | 2022-08-04 | Dyemansion Gmbh | Verfahren zur nachbearbeitung von additiv gefertigten bauteilen durch strahlverfahren mit kunststoffstrahlmitteln |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04141371A (ja) * | 1990-10-03 | 1992-05-14 | Sony Corp | 被加工物の表面処理加工方法及びその表面処理加工装置 |
WO2000045994A1 (fr) * | 1999-02-01 | 2000-08-10 | Bridgestone Corporation | Concassage de billes, et procede et dispositif de production de billes associes |
JP2001269869A (ja) * | 2000-03-27 | 2001-10-02 | Fuji Seiki Mach Works Ltd | ブラスト用研磨材 |
JP2001277131A (ja) * | 2000-01-26 | 2001-10-09 | Bridgestone Corp | 投射材及びブラスト処理方法 |
JP2002068040A (ja) * | 2000-08-25 | 2002-03-08 | Bridgestone Corp | 自動車用バンパーの皮膜除去方法 |
JP2002079467A (ja) * | 2000-05-19 | 2002-03-19 | Bridgestone Corp | 投射材 |
JP2003266313A (ja) * | 2002-03-15 | 2003-09-24 | Bridgestone Corp | 投射材及びブラスト処理方法 |
JP2004001204A (ja) * | 2002-04-17 | 2004-01-08 | Bridgestone Corp | 固体表面の脱脂方法 |
-
2004
- 2004-06-29 WO PCT/JP2004/009141 patent/WO2005002796A1/ja not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04141371A (ja) * | 1990-10-03 | 1992-05-14 | Sony Corp | 被加工物の表面処理加工方法及びその表面処理加工装置 |
WO2000045994A1 (fr) * | 1999-02-01 | 2000-08-10 | Bridgestone Corporation | Concassage de billes, et procede et dispositif de production de billes associes |
JP2001277131A (ja) * | 2000-01-26 | 2001-10-09 | Bridgestone Corp | 投射材及びブラスト処理方法 |
JP2001269869A (ja) * | 2000-03-27 | 2001-10-02 | Fuji Seiki Mach Works Ltd | ブラスト用研磨材 |
JP2002079467A (ja) * | 2000-05-19 | 2002-03-19 | Bridgestone Corp | 投射材 |
JP2002068040A (ja) * | 2000-08-25 | 2002-03-08 | Bridgestone Corp | 自動車用バンパーの皮膜除去方法 |
JP2003266313A (ja) * | 2002-03-15 | 2003-09-24 | Bridgestone Corp | 投射材及びブラスト処理方法 |
JP2004001204A (ja) * | 2002-04-17 | 2004-01-08 | Bridgestone Corp | 固体表面の脱脂方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008229809A (ja) * | 2007-03-23 | 2008-10-02 | Fuji Seisakusho:Kk | 被膜形成部の下地処理方法 |
JP2009154268A (ja) * | 2007-12-27 | 2009-07-16 | Disco Abrasive Syst Ltd | ウォータージェット加工装置の処理方法 |
CN112811840A (zh) * | 2021-01-07 | 2021-05-18 | 上海应用技术大学 | 一种利用回收聚氨酯处理海砂的方法 |
CN112811840B (zh) * | 2021-01-07 | 2022-07-05 | 上海应用技术大学 | 一种利用回收聚氨酯处理海砂的方法 |
WO2022162182A1 (de) * | 2021-01-28 | 2022-08-04 | Dyemansion Gmbh | Kunststoffstrahlmittel sowie verwendung eines kunststoffstrahlmittels |
WO2022162173A1 (de) * | 2021-01-28 | 2022-08-04 | Dyemansion Gmbh | Verfahren zur nachbearbeitung von additiv gefertigten bauteilen durch strahlverfahren mit kunststoffstrahlmitteln |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060099888A1 (en) | Abrasive, a method for manufacturing the abrasive, and a method for blast processng with the use of the abrasive | |
US20080233838A1 (en) | Substrate treatment method for portion to be coated | |
JP2003266313A (ja) | 投射材及びブラスト処理方法 | |
KR101154107B1 (ko) | 충전제?유리 함유 수지 성형체 | |
SK5872003A3 (en) | Low gloss powder coatings | |
EP3390544B1 (en) | Impact resistant coating compositions | |
WO2003068452A1 (fr) | Materiaux explosifs et procede de dynamitage | |
WO2005002796A1 (ja) | ブラスト処理方法 | |
US8138253B2 (en) | Filler for powder coating material and powder coating composition containing the same | |
JP2003268175A (ja) | リサイクル材及びリサイクル材を用いた自動車外装部品 | |
JP2001277131A (ja) | 投射材及びブラスト処理方法 | |
JP2001300851A (ja) | 投射材及びブラスト処理方法 | |
JP2004001204A (ja) | 固体表面の脱脂方法 | |
JP2001277124A (ja) | 投射材及びブラスト処理方法 | |
JP4337245B2 (ja) | 投射材及びブラスト処理方法 | |
JP2001277123A (ja) | 投射材及びブラスト処理方法 | |
JP2005000872A (ja) | クリア塗装品の補修方法 | |
JP2001277128A (ja) | 投射材及びブラスト処理方法 | |
JP2001277125A (ja) | 投射材及びブラスト処理方法 | |
JP2011178880A (ja) | 軋み音を低減した自動車内装部品 | |
JP2001277129A (ja) | 投射材及びブラスト処理方法 | |
JP2002079467A (ja) | 投射材 | |
JP4353144B2 (ja) | 投射材およびブラスト方法 | |
JP3013827U (ja) | 金属低温溶射被覆を有する非金属成形品 | |
JP2001277127A (ja) | 黒色導電樹脂製投射材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |