CA2255784A1 - Extrusion molding article with embossing finish and a method for producing the same - Google Patents
Extrusion molding article with embossing finish and a method for producing the same Download PDFInfo
- Publication number
- CA2255784A1 CA2255784A1 CA002255784A CA2255784A CA2255784A1 CA 2255784 A1 CA2255784 A1 CA 2255784A1 CA 002255784 A CA002255784 A CA 002255784A CA 2255784 A CA2255784 A CA 2255784A CA 2255784 A1 CA2255784 A1 CA 2255784A1
- Authority
- CA
- Canada
- Prior art keywords
- embossing
- extrusion molding
- glazed
- wood powder
- embossing finish
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000004049 embossing Methods 0.000 title claims abstract description 37
- 238000001125 extrusion Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000002023 wood Substances 0.000 claims abstract description 22
- 239000003973 paint Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000010422 painting Methods 0.000 claims abstract description 11
- 230000001680 brushing effect Effects 0.000 claims abstract 4
- 239000002245 particle Substances 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 241001527806 Iti Species 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/355—Conveyors for extruded articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides an art for solving the problems that wood-like touch is lost due to light and shade stripes when an embossing finish is applied on the extrusion molding article expected to have wood-like touch. The glazed portion comprising a glazed face is formed by an extrusion molding using a resin material containing wood powder in which the resin is blended with the wood powder. Paint layers are penetrated into embossing grooves after applying an embossing finish and painting on the glazed face, followed by brushing.
Description
~ WO 9~437gl - PCT~lP97/0107 I~ESCRIPTION
- ~;2~ Ku~ION MOI.DING ARTICLE WIT~I EMBOSSING FINIS~I
AND A PEl~OD FOR PRODUCING T~; SAME
~echnical Field The present i~entlon re1ates to an e~trusion molding article with an embosslng ~ini9h and a method ~or producing the same. In more detail, the present lnvention relates to an art ~or applying an embossing ~inish on the surface o~ an e~trusion ~olding article o~ resins, rollowed by making the pattern prlnted by the embosslng ~inish clear.
~kground Art ~ ome building components, in which extrusion molding artlcles o~ re~in materials cont~1n1n~ wood powder are ~requently used, are described below as a related art.
Extrusion molded articles o~ synthetic resins have been frequently u9ed for highly processed buildlng components like a door sash ~nstead o~ wooden components manufactured by natural ti~bers. The materials for these extrusion molded articles oi synthetic resins are, for example, a hard vinyl chloride resin with which several tens percentage o~ wood powder is blended. The e~trusion moldlng article comprising the a~orementioned materials can be pre~iously ~ormed into a desired shape while the natural timbers re~uire several times of p1 ~nl n~ steps. There~ore, processing steps a~ter the moldlng can be largely reduced ln addltion to enabling the article to be c~t with a saw or to be ~i~ed with nails, which makes the construction so easy.
- ~owever, the new article according to the art described above yet invol~es several problems that lts speciiic gravity is so large compared with that o~ timbers and its surface becomes so hard by ~orming skin layers on the sur~ace that wood-like touch is lost. Moreover, since its compatibility wlth vinyl acetate based adhesi~es or paints that are commonly used for the wooden components ls low, adhesion or painting with the resin was di~iicult.
There~ore, the uses o~ this new article ~ere limited. For the purpose o~ solving the a~oreme~tioned problems, an e~trusion ~olding with a low degree ~f ~o~m~ng has been applied after adding a blowing agent in the resin material to maXe the specific gra~ity of the molded article nesrly equal to that of the natural timber components.
Notwithstanding the specific gra~ity o~ the molded product nearly identical with that o~ the natural timber components, problems as described belo~ has still remained ~or applying an embossing finlsh.
In the embcssing finish, a cylindrical roller pro~ided with a lot o~ conve~ities on lts suriace is pressed on the suriace o~ the molded article to iorm many tiny grooves on it, therebr printing grain patterns on the surrace o~ the molded article ~ollowed by painting on it.
However, since the painting is applied onl~ by a spray-coating, the paint layer so hardly-penetrates into the grooved portions iormed by the embossing finish that ~ood-like touch is lost due to light and shade stripes on lts surrace .
Disclosure o~ Invention Accor~n~ly, the ob~ect of the present invention is to solve the problems described hitherto that arise aiter applying an embossing finish to the e~trusion moldlng article that is e~pected to have wood-like touch. Paints are allowed to pe~etrate i~to the patterns formed by the embossing iinish ~or emphasizing its color tone, thereby making the grain patterns clear and enha~cing wood-like touch.
The present invention comprises the steps Or e~trusion molding a molded article havi~g a cross section with a desired shape, applying an embossing ~inish aiter removing skin layers iormed on the surface, spray-coating a paint on the sur~ace, allowing to penetrate the paint layer lnto patterns formed by the embossing iinish by rubbing with an elastic block and fl~lly re~oving the light and shade stripes iormed by rubbing with a brush.
(E~planation o~ Claim 1) The present invention according to Claim 1 provides an e~trusion molding article oi resins rormed by ~n e~trusion molding, characterized in that the glazed portion comprising at least a glazed iace is ~ormed with a resin material cont~ln~n~ wood powder ln which the resin is blended wlth the wood powder; the glazed ~ace thereo~ being iormed, aiter applying a~ embosslng iinlsh and paintl~g, by buryi~g a paint i~ grooves ~ormed by the embossing ~inis~
and brnsh1 ng the sur~ace Or the burled paint.
The foregoing "glazed portlon" denotes a ~islble port~on when the molded artic~e of resins formed by the e~trusion molding according to the present i~vention is brought in a circumstance where their inherent functions can be e~hibited.
CA 02255784 l998-ll-23 WO g~43791 ~ iJ~/~1075 (Explan~tion o~ Claim 2) The present invention according to Claim 2 ls provided to technically limlt the extrusion mDlding article with an embossing ~inish according to Claim 1, wherein the glazed portion ls molded by a monolithlc extrusion wlth the other portions.
~ hen the glazed portion and the other portions are composed oi di~erent material9 with each other, both portions are molded by a monollthlc extrusion molding.
(E~planation o~ Claim 3) The present lnvention according to Claim 3 is pro~ided to technically limit *he glazed portion of the e~trusion molding article with an embossing iinish according to Claim 1 or Claim 2, wherein the glazed portion and the other portlons are molded ~ith a resin materlal cont~1n~ng wood po~der rorming the glazed portion.
When the glazed portion and the other portions are composed o~ an identlcal material, the whole portion is produced by using the material oi the glazed portion.
(Explanation of Clalm 4) The present lnvention accordlng to Claim 4 is characterized by producing the wood powder in the resin cont~ nl nr wood powder that ~orms the glazed portion by the steps comprising: grinding the crushed powder obtained by cr~qh~n~ a cellulose material; and adherlng sur~ace particles having a smaller particle slze and higher hardness than the crushed powder on the peripheral sur~ace o~ the crushed powder.
"Cellulose materials~ described herein denotes natural woods as well as such mater~als including sawdust, rice straws and bagasse.
~ Resins~ includes hard resins, ~or example, such as pol~inyl chloride resin, foamed poly~inyl chloride res~n, polyethylene resin, polypropylene resin, phenol resin.
polyurethane resin, ABS resin and polystylene resin. So~t type resin may be also used depending on the molded bodies required.
~ Suriace particles~ correspond to titanium oxide, aluminum, nickel, silver, ierrites, thermoplastic reslns or ceramics.
The proportion oi the wood powder to be mi~e~ wlth the resin to the total molded body i9 ad,~usted not to e~ceed 30X by weight since molding processes ~ay be interfered with a low iluidity during the molding.
"Pigments~ denote colored pigments, exnmples oi them bei~g inorganic pigments such as iron oxide, cadmium yellow W098J437Yq ~ tJ~
and carbon blac~.
(E~planation o~ Claim 5) The present inventlon according to Claim 5 provideq a method ~or producing an e~trusion molding article wlth a~
embossing ~inish comprising: an e~truslon moldi~g step ~or extr~sion molding a glazed pcrtion that ~orms at least a glazed ~ace by using a resin material cont~n~ng wood powder in which the resin is mi~ed with the wood powder; an embossing step ~or applying an embossing rinish on the glazed race; a paintlng step ~or painting so as to bury the paint into grooves ~ormed by the embossing ~inish; and a br~ch~n~ step rOr brllch~ng the paint layer buried in the grooves ~ormed by the embosslng finish.
Brier Description of Drawings Fig. 1 is an lllustrative drawing representing a production process according to the prese~t invention. and Fig. 2 is a perspective view showing an example Or the molded article.
.,.
Best Mode ior Carrying ~ut the Invention The present invention ~ill now be described by way Or embodied illustrations. However, the invention ls not limited thereto.
In Fig. 1, 1 is an extrusion moldlng machine ror synthetic resins, 2 is a cooler a~d 3 is sn extrusion guide.
These parts are commonly found in the conventio~al e~truder.
A molding die 4 is attached to the e~trusion molding machine 1 ~or continuously moldlng a molding article having a cross section with a desired shape.
A molded article A having a cross section as shown in Fig. 2 is rormed, rOr e~mple, by supplying a molding ~aterial Or a synthetic resin to the extruder 1, with ~hich several tens percentage o~ wood powder, several percentage oi blowing agent, stabilizer and rein~orcing material, respectively, are blended. A s~ ng machine 5 is provided in ~ront oi the extrusion molding machine to remove skln layers ~ormed on the surface o~ the mo}ded article A and ~or applyinF a satin finish on the surface, thereby e~posinF
countless smal} pores produced by wood powder and blowing agents ~or emphasizing wood~ e touch of the molded article A as ~ell as ~or enhancing a compatibility with paints. An embossing machi~e 6 is also provided i~ ~ront o~ the S~n~i n~
machine 5 to appl~ an embossing ~inish on the suriace o~ the molded artlcle arrlved at this posltion. The embossing machine 6 is provlded with a press roller on the suriace oi WO9~ PCT~J~n~1~s which a lot o~ conve~ities are protruded ~onming a grain pattern. A grain pattern having thin grooves is printed by pressing this press roller on and penetrating the convexities into the sur~ace o~ the molded article A.
A spray coating machlne 7, rubbing ~achine 8 and brush 9 are ~urther provided, respecti~ely, in ~ront of the embossing machlne 6 ~or spray coating a prescribed amount of paint on the sur~ace o~ the molded article A prevlously subJ ected to an embossing ~inish, ~ollowed by rubbing the coated surface with a gentle touch o~ the sur~ace with an elastic bloc~ like an urethan ~oam, thereby penetrat~ng the palnt layer into the thin grooves ~ormed by the embossing finish. Then, light and shade stripes appeared on the palnted sur~ace of the molded article A are retouched by using the brush 9 to ~orm an uni~or~ painted surface. The molded article is ~inally rinished by drying the coated layer by a con~entional method ~ollowed by painting a clear lacquer.
According to the a~orementioned process, a pattern by the embossing finish clearly appears since the coated paint can penetrate into the thin grooves where it is di~icult by the spray coating. Llght and shade stripes appeared on the s~riace of the processed material are erased by rubbing to ~orm an uni~ormly palnted surface, thereby making it possible to obtain a product having a beauti~ul appearance with highly wood-like touch.
The block used ~or rubbing the painted sur~ace absorbs few paints since it has an appropriate degree of elasticity. Therefore, an eifectlve painting is made possible since few amount o~ the paint coated on the ~hole painting sur~ace comprising the groove part and the other parts is lost ~hile enabling to penetrate the paint into every thin grooves.
The painted sur~ace on which light and shade stripes appear arising from the palnted sur~ace other than the thin grooves can be e~fectively turned into an uni~orm surface ~y brll~h~ng after rubbing with an elastic block. Thus, it is possible to make the embossing pattern clear by emphasizlng the color tone on the thin grooves, ~urther enhancing wood-like touch as a bac~ground on the substrate even when both the thln groove portion and the other portions on the sur~ace are simultaneously coated with a paint.
Industrial Applicability As disclosed herein, the present in~ention provides an art ~or solving the problems that wood-like touch is lost WO gU~
due to light and shade stripes ~hen an em~ossing ~lnish is applied an the extrusion molding. article e~pected t~ ha~e - wood-like touch.
- ~;2~ Ku~ION MOI.DING ARTICLE WIT~I EMBOSSING FINIS~I
AND A PEl~OD FOR PRODUCING T~; SAME
~echnical Field The present i~entlon re1ates to an e~trusion molding article with an embosslng ~ini9h and a method ~or producing the same. In more detail, the present lnvention relates to an art ~or applying an embossing ~inish on the surface o~ an e~trusion ~olding article o~ resins, rollowed by making the pattern prlnted by the embosslng ~inish clear.
~kground Art ~ ome building components, in which extrusion molding artlcles o~ re~in materials cont~1n1n~ wood powder are ~requently used, are described below as a related art.
Extrusion molded articles o~ synthetic resins have been frequently u9ed for highly processed buildlng components like a door sash ~nstead o~ wooden components manufactured by natural ti~bers. The materials for these extrusion molded articles oi synthetic resins are, for example, a hard vinyl chloride resin with which several tens percentage o~ wood powder is blended. The e~trusion moldlng article comprising the a~orementioned materials can be pre~iously ~ormed into a desired shape while the natural timbers re~uire several times of p1 ~nl n~ steps. There~ore, processing steps a~ter the moldlng can be largely reduced ln addltion to enabling the article to be c~t with a saw or to be ~i~ed with nails, which makes the construction so easy.
- ~owever, the new article according to the art described above yet invol~es several problems that lts speciiic gravity is so large compared with that o~ timbers and its surface becomes so hard by ~orming skin layers on the sur~ace that wood-like touch is lost. Moreover, since its compatibility wlth vinyl acetate based adhesi~es or paints that are commonly used for the wooden components ls low, adhesion or painting with the resin was di~iicult.
There~ore, the uses o~ this new article ~ere limited. For the purpose o~ solving the a~oreme~tioned problems, an e~trusion ~olding with a low degree ~f ~o~m~ng has been applied after adding a blowing agent in the resin material to maXe the specific gra~ity of the molded article nesrly equal to that of the natural timber components.
Notwithstanding the specific gra~ity o~ the molded product nearly identical with that o~ the natural timber components, problems as described belo~ has still remained ~or applying an embossing finlsh.
In the embcssing finish, a cylindrical roller pro~ided with a lot o~ conve~ities on lts suriace is pressed on the suriace o~ the molded article to iorm many tiny grooves on it, therebr printing grain patterns on the surrace o~ the molded article ~ollowed by painting on it.
However, since the painting is applied onl~ by a spray-coating, the paint layer so hardly-penetrates into the grooved portions iormed by the embossing finish that ~ood-like touch is lost due to light and shade stripes on lts surrace .
Disclosure o~ Invention Accor~n~ly, the ob~ect of the present invention is to solve the problems described hitherto that arise aiter applying an embossing finish to the e~trusion moldlng article that is e~pected to have wood-like touch. Paints are allowed to pe~etrate i~to the patterns formed by the embossing iinish ~or emphasizing its color tone, thereby making the grain patterns clear and enha~cing wood-like touch.
The present invention comprises the steps Or e~trusion molding a molded article havi~g a cross section with a desired shape, applying an embossing ~inish aiter removing skin layers iormed on the surface, spray-coating a paint on the sur~ace, allowing to penetrate the paint layer lnto patterns formed by the embossing iinish by rubbing with an elastic block and fl~lly re~oving the light and shade stripes iormed by rubbing with a brush.
(E~planation o~ Claim 1) The present invention according to Claim 1 provides an e~trusion molding article oi resins rormed by ~n e~trusion molding, characterized in that the glazed portion comprising at least a glazed iace is ~ormed with a resin material cont~ln~n~ wood powder ln which the resin is blended wlth the wood powder; the glazed ~ace thereo~ being iormed, aiter applying a~ embosslng iinlsh and paintl~g, by buryi~g a paint i~ grooves ~ormed by the embossing ~inis~
and brnsh1 ng the sur~ace Or the burled paint.
The foregoing "glazed portlon" denotes a ~islble port~on when the molded artic~e of resins formed by the e~trusion molding according to the present i~vention is brought in a circumstance where their inherent functions can be e~hibited.
CA 02255784 l998-ll-23 WO g~43791 ~ iJ~/~1075 (Explan~tion o~ Claim 2) The present invention according to Claim 2 ls provided to technically limlt the extrusion mDlding article with an embossing ~inish according to Claim 1, wherein the glazed portion ls molded by a monolithlc extrusion wlth the other portions.
~ hen the glazed portion and the other portions are composed oi di~erent material9 with each other, both portions are molded by a monollthlc extrusion molding.
(E~planation o~ Claim 3) The present lnvention according to Claim 3 is pro~ided to technically limit *he glazed portion of the e~trusion molding article with an embossing iinish according to Claim 1 or Claim 2, wherein the glazed portion and the other portlons are molded ~ith a resin materlal cont~1n~ng wood po~der rorming the glazed portion.
When the glazed portion and the other portions are composed o~ an identlcal material, the whole portion is produced by using the material oi the glazed portion.
(Explanation of Clalm 4) The present lnvention accordlng to Claim 4 is characterized by producing the wood powder in the resin cont~ nl nr wood powder that ~orms the glazed portion by the steps comprising: grinding the crushed powder obtained by cr~qh~n~ a cellulose material; and adherlng sur~ace particles having a smaller particle slze and higher hardness than the crushed powder on the peripheral sur~ace o~ the crushed powder.
"Cellulose materials~ described herein denotes natural woods as well as such mater~als including sawdust, rice straws and bagasse.
~ Resins~ includes hard resins, ~or example, such as pol~inyl chloride resin, foamed poly~inyl chloride res~n, polyethylene resin, polypropylene resin, phenol resin.
polyurethane resin, ABS resin and polystylene resin. So~t type resin may be also used depending on the molded bodies required.
~ Suriace particles~ correspond to titanium oxide, aluminum, nickel, silver, ierrites, thermoplastic reslns or ceramics.
The proportion oi the wood powder to be mi~e~ wlth the resin to the total molded body i9 ad,~usted not to e~ceed 30X by weight since molding processes ~ay be interfered with a low iluidity during the molding.
"Pigments~ denote colored pigments, exnmples oi them bei~g inorganic pigments such as iron oxide, cadmium yellow W098J437Yq ~ tJ~
and carbon blac~.
(E~planation o~ Claim 5) The present inventlon according to Claim 5 provideq a method ~or producing an e~trusion molding article wlth a~
embossing ~inish comprising: an e~truslon moldi~g step ~or extr~sion molding a glazed pcrtion that ~orms at least a glazed ~ace by using a resin material cont~n~ng wood powder in which the resin is mi~ed with the wood powder; an embossing step ~or applying an embossing rinish on the glazed race; a paintlng step ~or painting so as to bury the paint into grooves ~ormed by the embossing ~inish; and a br~ch~n~ step rOr brllch~ng the paint layer buried in the grooves ~ormed by the embosslng finish.
Brier Description of Drawings Fig. 1 is an lllustrative drawing representing a production process according to the prese~t invention. and Fig. 2 is a perspective view showing an example Or the molded article.
.,.
Best Mode ior Carrying ~ut the Invention The present invention ~ill now be described by way Or embodied illustrations. However, the invention ls not limited thereto.
In Fig. 1, 1 is an extrusion moldlng machine ror synthetic resins, 2 is a cooler a~d 3 is sn extrusion guide.
These parts are commonly found in the conventio~al e~truder.
A molding die 4 is attached to the e~trusion molding machine 1 ~or continuously moldlng a molding article having a cross section with a desired shape.
A molded article A having a cross section as shown in Fig. 2 is rormed, rOr e~mple, by supplying a molding ~aterial Or a synthetic resin to the extruder 1, with ~hich several tens percentage o~ wood powder, several percentage oi blowing agent, stabilizer and rein~orcing material, respectively, are blended. A s~ ng machine 5 is provided in ~ront oi the extrusion molding machine to remove skln layers ~ormed on the surface o~ the mo}ded article A and ~or applyinF a satin finish on the surface, thereby e~posinF
countless smal} pores produced by wood powder and blowing agents ~or emphasizing wood~ e touch of the molded article A as ~ell as ~or enhancing a compatibility with paints. An embossing machi~e 6 is also provided i~ ~ront o~ the S~n~i n~
machine 5 to appl~ an embossing ~inish on the suriace o~ the molded artlcle arrlved at this posltion. The embossing machine 6 is provlded with a press roller on the suriace oi WO9~ PCT~J~n~1~s which a lot o~ conve~ities are protruded ~onming a grain pattern. A grain pattern having thin grooves is printed by pressing this press roller on and penetrating the convexities into the sur~ace o~ the molded article A.
A spray coating machlne 7, rubbing ~achine 8 and brush 9 are ~urther provided, respecti~ely, in ~ront of the embossing machlne 6 ~or spray coating a prescribed amount of paint on the sur~ace o~ the molded article A prevlously subJ ected to an embossing ~inish, ~ollowed by rubbing the coated surface with a gentle touch o~ the sur~ace with an elastic bloc~ like an urethan ~oam, thereby penetrat~ng the palnt layer into the thin grooves ~ormed by the embossing finish. Then, light and shade stripes appeared on the palnted sur~ace of the molded article A are retouched by using the brush 9 to ~orm an uni~or~ painted surface. The molded article is ~inally rinished by drying the coated layer by a con~entional method ~ollowed by painting a clear lacquer.
According to the a~orementioned process, a pattern by the embossing finish clearly appears since the coated paint can penetrate into the thin grooves where it is di~icult by the spray coating. Llght and shade stripes appeared on the s~riace of the processed material are erased by rubbing to ~orm an uni~ormly palnted surface, thereby making it possible to obtain a product having a beauti~ul appearance with highly wood-like touch.
The block used ~or rubbing the painted sur~ace absorbs few paints since it has an appropriate degree of elasticity. Therefore, an eifectlve painting is made possible since few amount o~ the paint coated on the ~hole painting sur~ace comprising the groove part and the other parts is lost ~hile enabling to penetrate the paint into every thin grooves.
The painted sur~ace on which light and shade stripes appear arising from the palnted sur~ace other than the thin grooves can be e~fectively turned into an uni~orm surface ~y brll~h~ng after rubbing with an elastic block. Thus, it is possible to make the embossing pattern clear by emphasizlng the color tone on the thin grooves, ~urther enhancing wood-like touch as a bac~ground on the substrate even when both the thln groove portion and the other portions on the sur~ace are simultaneously coated with a paint.
Industrial Applicability As disclosed herein, the present in~ention provides an art ~or solving the problems that wood-like touch is lost WO gU~
due to light and shade stripes ~hen an em~ossing ~lnish is applied an the extrusion molding. article e~pected t~ ha~e - wood-like touch.
Claims (5)
1. An extrusion molding article of resins formed by an extrusion molding, characterized in that the glazed portion comprising at least a glazed face is formed with a resin material containing wood powder in which the resin is blended with the wood powder; and the glazed face thereof being formed, after applying an embossing finish and painting, by burying a paint in grooves formed by the embossing finish and brushing the surface of the buried paint.
2. An extrusion molding article with an embossing finish according to Claim 1, wherein the glazed portion is molded by a monolithic extrusion with the other portions.
3. An extrusion molding article with an embossing finish according to Claim 1 or claim 2, wherein the glazed portion and the other portions are molded with a resin material containing wood powder forming the glazed portion.
4. An extrusion molding article with an embossing finish according to Claim 1, wherein the wood powder in the resin containing wood powder that forms the glazed portion is produced by the steps comprising:
grinding the crushed powder obtained by crushing a cellulose material; and adhering surface particles having a smaller particle size and higher hardness than the crushed powder on the peripheral surface of the crushed powder.
grinding the crushed powder obtained by crushing a cellulose material; and adhering surface particles having a smaller particle size and higher hardness than the crushed powder on the peripheral surface of the crushed powder.
5. A method for producing an extrusion molding article with an embossing finish comprising:
an extrusion molding step for extrusion molding a glazed portion that forms at least a glazed face by using a resin material containing wood powder in which the resin is mixed with the wood powder;
an embossing step for applying an embossing finish on the glazed face;
a painting step for painting so as to bury the paint into grooves formed by the embossing finish; and a brushing step for brushing the paint layer buried in the grooves formed by the embossing finish.
an extrusion molding step for extrusion molding a glazed portion that forms at least a glazed face by using a resin material containing wood powder in which the resin is mixed with the wood powder;
an embossing step for applying an embossing finish on the glazed face;
a painting step for painting so as to bury the paint into grooves formed by the embossing finish; and a brushing step for brushing the paint layer buried in the grooves formed by the embossing finish.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP1997/001075 WO1998043791A1 (en) | 1997-03-28 | 1997-03-28 | Extrusion molding article with embossing finish and a method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2255784A1 true CA2255784A1 (en) | 1998-10-08 |
Family
ID=14180325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002255784A Abandoned CA2255784A1 (en) | 1997-03-28 | 1997-03-28 | Extrusion molding article with embossing finish and a method for producing the same |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2176697A (en) |
| CA (1) | CA2255784A1 (en) |
| WO (1) | WO1998043791A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005039843A1 (en) * | 2003-10-24 | 2005-05-06 | Bryan Holdings Inc. | Manufacture of extruded synthetic wood structural materials |
| US9162369B2 (en) | 2008-10-21 | 2015-10-20 | Andre Verville | Embossed monolayer particleboards and methods of preparation thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050266210A1 (en) * | 2004-06-01 | 2005-12-01 | Blair Dolinar | Imprinted wood-plastic composite, apparatus for manufacturing same, and related method of manufacture |
| DE202006007797U1 (en) * | 2006-05-16 | 2006-08-17 | Rehau Ag + Co. | Extruded profile with wood-like surface, e.g. for window frames, comprises colored polyvinyl chloride with brushed and subsequently sealed surface |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2200112A1 (en) * | 1972-09-19 | 1974-04-19 | Brauning Helmut | |
| JP2545525B2 (en) * | 1987-01-19 | 1996-10-23 | ミサワホーム株式会社 | Method of manufacturing extruded product with embossing pattern |
| AU663651B2 (en) * | 1993-03-05 | 1995-10-12 | Misawa Homes Co., Ltd. | Method of manufacturing wood-like product and the product |
-
1997
- 1997-03-28 AU AU21766/97A patent/AU2176697A/en not_active Abandoned
- 1997-03-28 WO PCT/JP1997/001075 patent/WO1998043791A1/en not_active Application Discontinuation
- 1997-03-28 CA CA002255784A patent/CA2255784A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005039843A1 (en) * | 2003-10-24 | 2005-05-06 | Bryan Holdings Inc. | Manufacture of extruded synthetic wood structural materials |
| US9162369B2 (en) | 2008-10-21 | 2015-10-20 | Andre Verville | Embossed monolayer particleboards and methods of preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2176697A (en) | 1998-10-22 |
| WO1998043791A1 (en) | 1998-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |