CN102689336B - Mold and method for manufacturing laminated paper composite plate with round head having arc wrap angle larger than 90 degrees and smaller than 180 degrees at one end - Google Patents
Mold and method for manufacturing laminated paper composite plate with round head having arc wrap angle larger than 90 degrees and smaller than 180 degrees at one end Download PDFInfo
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- CN102689336B CN102689336B CN201210158171.8A CN201210158171A CN102689336B CN 102689336 B CN102689336 B CN 102689336B CN 201210158171 A CN201210158171 A CN 201210158171A CN 102689336 B CN102689336 B CN 102689336B
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Abstract
The invention discloses a mold and a method for manufacturing a laminated paper composite plate with a round head having an arc wrap angle larger than 90 degrees and smaller than 180 degrees at one end. The mold is mainly characterized in that a plate blank is obliquely placed on a lower mold block forming boss via a spring. The method is mainly characterized in that a lower mold block moves upwards, after the plate blank enters an upper mold block forming groove, an inclined plane at a side end of the forming groove pushes the plate blank to be positioned in place correctly, and the composite plate is manufactured in a hot-press forming manner. The mold has the advantages of simple and reasonable structure, convenience in use, easiness in control and the like. The method has the advantages of simplicity, good quality of a finished product, low energy consumption, and the like.
Description
Technical field
The present invention relates to a kind of one end and there is the preparation method that prepare mould and described composite plate of arc wrap angle > 90 ° to the decorative paper composite plate of 180 ° of round ends, belong to decorative material technology.
Background technology
One end round end composite plate involved in the present invention, refers to have arc wrap angle > 90 ° of composite plates to 180 ° of circular arc cambers in one end of described composite plate.Described this composite plate, is at one end have on the working face of shaping plate body blank (as shown in Figure 1) of described round end, is hot bonding the composite plate of impregnation decorative paper.
Described this one end has the decorative paper composite plate (being called for short single round end composite plate) of round end, can be made into step bead profile, or sole plate of workbench through carpenter's processing, or all many-sides such as cabinet Cabinet bead, its can range of application widely.
Due to the arc wrap angle > 90 ° to 180 ° of described round end, thus must adopt Hough involutory point of mould in its preparation process, so that protruding lines must be caused along described round end die joint, and serious impact is formed on its outward appearance.
Chinese patent ZL200510041361.1 discloses one " manufacture method of the composite plate that lateral round end arc wrap angle ranged > is 90 ° to 180 ° and products thereof ", has properly settled the problem that described round end die joint produces protruding lines.
But above-mentioned Chinese patent technology adopts cover die mode to produce due to it, so that its technological operation is very inconvenient, especially when described composite plate body is larger, execute-in-place is more difficult; And its cover module system thickness is the stainless steel product of 0.3 ~ 2mm, and in reality is produced, want to guarantee that this cover die is indeformable and surface is straight, not a duck soup.In fact described distortion is inevitable, and this brings many troubles just to the maintenance of cover die and reparation, but also quality problems cause adverse effect described composite surface to be given straight etc.
Summary of the invention
The present invention aims to provide a kind of rational in infrastructure, practical and convenient reliable one end arc wrap angle > 90 ° to 180 ° of round ends decorative paper composite plate prepare mould, and adopt the described method prepared mould and prepare described composite plate, to overcome the deficiency of above-mentioned patented technology.
The present invention realizes the technical though of its object, under the condition set at the width of the shaping groove of molding concave die, order tilting on the shaping boss of forming convax mould cover the described work piece blank (i.e. the plate body blank of described round end composite plate) being surrounded by impregnation decorative paper, and make the width of its upright projection be less than the width of the shaping groove of forming convax mould, then hot press move up and down the lateral thrust comprehensively produced promotion under, realize the positive stop of described blank and conveniently exit, thus completing the production of surface without composite plate described in lines.
Based on above-mentioned technical though, the technical scheme preparing mould of the present invention is:
One end have arc wrap angle > 90 ° to 180 ° of round ends decorative paper composite plate prepare a mould, comprise lower module and upper module, and lower module and the involutory configuration of upper module Hough, its innovative point is:
A, described lower module have shaping boss along its length, and upper module has shaping groove along its length, and described shaping boss is tackled mutually with shaping groove and mated; And the width S of shaping boss
1be less than the width S of shaping groove
2;
B, a side of described shaping groove have match with described composite plate rounded shape and with the shaping recessed slot pulling of the tangent round end be connected of shaping groove, the arc radius of the shaping recessed slot pulling of described round end equals described composite plate plate body round end radius and decorative paper thickness sum; Another side end edge of described shaping groove and the die joint of upper module keep angle α and hand in monoclinic phase;
C, also comprise reed, be provided with the reed groove of accommodating reed in the upper plane of the shaping boss of lower module in the width direction; Described reed is bending-like, and its bottom level section is connected with the bottom surface of reed groove, and its tilting free end can be supported on the inner side G point place at the round end position of described composite plate plate body, and when itself and reed groove phase compound tense, or the indentation mutually concordant with the side of shaping boss of its free end; The degree of depth of described reed groove is equal to or greater than the thickness of reed.
Be appreciated that in conjunction with its technical though by above given purport technical scheme, the present invention is arranged on the shaping boss of lower module owing to making work piece plate body blank sideling, and the width of its upright projection is less than the width of the shaping groove of upper module, plate body blank so just can be allowed successfully to enter the die cavity of upper module, utilize the inclined-plane of upper module die cavity one side simultaneously, the blunt end promoting plate stock enters shaping recessed slot pulling, thus makes plate body blank positive stop.Hot-forming by hot press, it is smooth and without the manufactured goods list round end decorative paper composite plate of lines to produce round end position.And described manufactured goods are by the effect of himself gravity, and decline easily in upper module die cavity.By manually using instrument stamping die hook, manufactured goods can be taken out, thus achieve object of the present invention if desired.
Under the demand meeting manufactured goods list round end decorative paper composite plate length such as makes the condition of work-table panel with it, its length generally will at more than 1500mm, so, the present invention advocates, described reed groove is arranged along shaping land length direction whole piece; Or along shaping land length direction step-by-step arrangement, and described reed is equal with reed groove number.That is, described reed can be a reed equal with manufactured goods length, also can be that such as length is the reed of 200 ~ 300mm, has spacing arranged apart along shaping land length direction segmentation by many and the unequal reed of manufactured goods length.In such a situa-tion, require that the elastic modelling quantity of many reeds is substantially identical.
The present invention also advocates, the distance > 0 between the die joint of described lower module and the die joint of upper module, and seamed involutory layout both forming.Its object be mainly eliminate upper module and lower module shaping without suturing mould, on the impact that goods are exerted pressure.
After technique scheme is implemented, of the present invention prepare that mould has simple and reasonable, favorable quality of finished products, the feature such as safe and reliable is apparent.
Second object that the present invention will realize be to provide a kind of adopt as previously discussed prepare the method that mould prepares described composite plate, and its technical scheme is:
A kind of adopt one end as previously discussed have arc wrap angle > 90 ° to 180 ° of round ends decorative paper composite plate prepare mould, preparation one end has the method for arc wrap angle > 90 ° to the decorative paper composite plate of 180 ° of round ends, the hot press adopting vertical displacement movement is process equipment, there is the shaping plate body of arc wrap angle > 90 ° to 180 ° of round ends for turned blank with one end, its innovative point is, its preparation method comprises the following steps:
A, the non-blunt end of described plate body blank is processed into inclined-plane, and the inclined-plane of described plate body blank one end, consistent with the gradient of a side end edge of the shaping groove of upper module.When described plate body blank is prepared at it, described in it, one end has processed in the slope, then this step can be omitted.
B, lower module and upper module to be equipped with mutually with the die shoe of process equipment hot press and upper bolster respectively; And the free end of described reed points to the shaping recessed slot pulling of round end of upper module;
C, cover bag impregnation decorative paper in plate body blank surface, then the plate body blank being surrounded by impregnation decorative paper will be covered, abutted against by G point place and reed free end inside its round end, and make the free end of blunt end hanging at reed of plate body blank, the other end of plate body blank is then shelved in the upper plane of the shaping boss of lower module, and by adjustment, plate body blank is correctly located, thus order to cover the plate body blank being surrounded by impregnation decorative paper tilting on the shaping boss of lower module, and the width of described tilting plate body blank upright projection is less than the width of the shaping groove of upper module;
D, start process equipment hot press, lower module is along with the ascending motion of process equipment hot press, described plate body blank blunt end is first advanced in the shaping groove of upper module, along with lower module continues to rise, the shaping groove bottom land of described plate body blank blunt end and upper module abuts against, and the other end of described plate body blank enters in the shaping groove of upper module, and the inclined-plane of a side end edge of its tail end inclined-plane and shaping groove is suitable, and rise along with the continuation of lower module, under the promotion of a side end edge of described shaping groove, the blunt end of described plate body blank is moved in the shaping recessed slot pulling of round end of shaping groove, until described plate body blank positive stop, and between the shaping groove that described decorative paper remains on plate body blank and upper module and the recessed slot pulling of round end, 8 seconds ~ 30 second time is kept after blank plate body expects position, to be hot bonding with plate body blank after making impregnation decorative paper be heated and integral, then the die shoe of process equipment hot press declines, the shaping boss of lower module and manufactured goods exit the shaping groove of upper module thereupon, and namely obtained finished product one end has the decorative paper composite plate of arc wrap angle > 90 ° to 180 ° of round ends.
The purport technical scheme realizing its second object by above given the present invention can understand.The preparation method that the present invention has is simple and easy to control, and die life is long, uses maintaining hardly, the features such as favorable quality of finished products, is obviously.It is the effective method of a kind of single round end decorative paper composite plate of preparation.And owing to eliminating the necessary cover die of above-mentioned patented technology, therefore its hot-forming consumed heat energy can significantly be reduced.Achieve object of the present invention.
In the technical scheme of above-mentioned preparation method, the present invention advocates that described plate body blank is wood plate, or artificial density board, or multilayer composite sheet.Wherein said density board can be low, middle-high density three kinds of density board.
The present invention also advocates, described impregnation decorative paper, is alundum (Al2O3) thermoplastic resin impregnation abrasion-proof paper, or facing paper thermoplastic resin gum dipped paper, or aluminium foil or Copper Foil or titanium foil thermoplastic resin impregnation metal forming.Wherein preferably usual used aluminium oxide melamine gum dipped paper, or alundum (Al2O3) phenolic resins gum dipped paper, or alundum (Al2O3) pollopas gum dipped paper.Because the anti-wear performance of described alundum (Al2O3) gum dipped paper is good, so the scope of application of the described composite plate prepared with it is very wide, and by described composite plate prepared by described impregnation gold genus Be, be generally used for the position, turning of top-grade furniture and decoration partition and screen, there is very outstanding decorative effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of one-sided round end plate body blank of the present invention; The arc wrap angle of its round end is 180 °;
Fig. 2 is the described structural representation preparing mould of a kind of detailed description of the invention of the present invention;
Fig. 3 is lower module 1 and the upper module 2 stitching state schematic diagram of a kind of concrete preparation method of the present invention.
Detailed description of the invention
Embodiment 1, please join and read attached Fig. 1 and 2.
One end have round end cornerite > 90 ° to 180 ° of round ends decorative paper composite plate prepare a mould, comprise lower module 1 and upper module 2, and lower module 1 and the involutory configuration of both upper modules 2 Hough, and its:
A, described lower module 1 have shaping boss 1-1 along its length, and upper module 2 has shaping groove 2-1 along its length, and described shaping boss 1-1 tackles mutually with shaping groove and mates; And the width S of shaping boss 1-1
1be less than the width S of shaping groove 2-1
2;
B, a side of described shaping groove 2-1 have match with described composite plate rounded shape and equal described composite plate plate body round end radius and decorative paper thickness sum with the arc radius of the shaping recessed slot pulling 2-2 of the tangent round end be connected of shaping groove 2-1, the shaping recessed slot pulling 2-2 of described round end; Another side end edge 2-1-1 of described shaping groove 2-1 and the die joint F of upper module 2
2keep angle α and hand in monoclinic phase;
C, also comprise reed 3, be provided with the reed groove 1-2 of accommodating reed 3 in the upper plane of the shaping boss 1-1 of lower module 1 in the width direction; Described reed 3 is in bending-like, and its bottom level section 3-1 is connected with the bottom surface of reed groove 1-2, and its tilting free end can be supported on the inner side G point place at the round end position of described composite plate plate body, and when itself and reed groove 1-2 phase compound tense, or the indentation concordant with the side 1-1-1 phase of shaping boss 1-1 of its free end; The degree of depth of described reed groove 1-2 is equal to or greater than the thickness of reed 3.
And described reed groove 1-2 arranges along shaping boss 1-1 length direction whole piece; Or along shaping boss 1-1 length direction step-by-step arrangement, and described reed 3 is equal with reed groove 1-2 number.
The die joint F of described lower module 1
1with the die joint F of upper module 2
2between distance > 0, and form both seamed involutory layout.
In above-mentioned detailed description of the invention, described lower module 1 and upper module 2 all adopt 45 steels do and through Overheating Treatment, the shaping groove 2-1 of described upper module 2 and the working surface of shaping recessed slot pulling 2-2, all through polishing in minute surface, to ensure the fineness on product decorative paper surface.Described reed 3 adopt thickness be 0.5 ~ 1.5mm spring steel plate make.
Embodiment 2, please join and read accompanying drawing 1 and 3.
A kind ofly the mould of preparing as embodiment 1 is adopted to prepare one end and have the method for arc wrap angle > 90 ° to the decorative paper composite plate of 180 ° of round ends, the hot press adopting vertical displacement movement is process equipment, have the shaping plate body of arc wrap angle > 90 ° to 180 ° of round ends for turned blank with one end, its preparation method comprises the following steps:
A, the non-blunt end of described plate body blank 5 is processed into inclined-plane, and the inclined-plane of described plate body blank 5 one end, consistent with the gradient of a side end edge 2-1-1 of the shaping groove 2-1 of upper module 2;
B, lower module 1 and upper module 2 to be equipped with mutually with the die shoe of process equipment hot press and upper bolster respectively; And the free end of described reed 3 points to the shaping recessed slot pulling 2-2 of round end of upper module 2;
C, cover bag impregnation decorative paper 4 on plate body blank 5 surface, then will cover the plate body blank 5 being surrounded by impregnation decorative paper 4, and be abutted against by G point place inside its round end and reed 3 free end, and make the free end of blunt end hanging at reed 3 of plate body blank 5; The other end of plate body blank 5 is then shelved in the upper plane of shaping boss 1-1 of lower module 1, and by adjustment, plate body blank 5 is correctly located, thus order to cover the plate body blank 5 being surrounded by impregnation decorative paper 4 tilting on the shaping boss 1-1 of lower module 1, and the width S of described tilting plate body blank 5 upright projection
3be less than the width S of the shaping groove 2-1 of upper module 2
2;
D, start process equipment hot press, lower module 1 is along with the ascending motion of process equipment hot press, described plate body blank 5 blunt end is first advanced in the shaping groove 2-1 of upper module 2, along with lower module 1 continues to rise, the shaping groove 2-1 bottom land of described plate body blank 5 blunt end and upper module 2 abuts against, and the other end of described plate body blank 5 enters in the shaping groove 2-1 of upper module 2, and the inclined-plane of a side end edge 2-1-1 of its tail end inclined-plane and shaping groove 2-1 is suitable, and rise along with the continuation of lower module 1, under the promotion of a side end edge 2-1-1 of described shaping groove 2-1, the blunt end of described plate body blank 5 is moved in the shaping recessed slot pulling 2-2 of round end of shaping groove 2-1, until described plate body blank 5 positive stop, and between the shaping groove 2-1 that described decorative paper 4 remains on plate body blank 5 and the upper module 2 and recessed slot pulling 2-2 of round end, 8 seconds ~ 30 second time is kept after plate body blank 5 puts in place, to be hot bonding with plate body blank 5 after making impregnation decorative paper 4 be heated and integral, then the die shoe of process equipment hot press declines, the shaping boss 1-1 of lower module 1 and manufactured goods exit the shaping groove 2-1 of upper module 2 thereupon, and namely obtained finished product one end has the decorative paper composite plate of arc wrap angle > 90 ° to 180 ° of round ends.
Described plate body blank 5 is wood plates, or artificial density board, or multilayer composite sheet.Described impregnation decorative paper 4 is alundum (Al2O3) thermoplastic resin impregnation abrasion-proof papers, or facing paper thermoplastic resin gum dipped paper, or aluminium foil or Copper Foil or titanium foil thermoplastic resin impregnation metal forming.
First sample lab scale effect of the present invention is good, and its manufactured goods meet or exceed quality standard, and the comparable above-mentioned patented technology of its production efficiency improves 1/3, achieves obvious technical economic benefit.
Here also should be noted that, the reed 3 being used for tilting work piece plate body blank 5 of the present invention, also several cylindrical springs can be adopted, and one end of each cylindrical spring is arranged in described shaping boss 1-1 several vertical blind holes arranged apart, its other end then resists the G point place of the inner bottom surface at described plate body blank 5 respectively, then can pass through by tilting for described plate body blank on described shaping boss 1-1 equally, and realize object of the present invention.Also just say, everyly described in tilting for work piece plate body blank 5 other on described shaping boss 1-1, prepare mould and described preparation method, all belong to protection scope of the present invention.
Claims (3)
1. one end has the preparation method of arc wrap angle > 90 ° to the decorative paper composite plate of 180 ° of round ends, the method is used prepares mould, comprise lower module (1) and upper module (2), and both the involutory configurations of Hough of lower module (1) and upper module (2), and its:
Described lower module (1) has shaping boss (1-1) along its length, and upper module (2) has shaping groove (2-1) along its length, and described shaping boss (1-1) is tackled mutually with shaping groove and mated; And the width S of shaping boss (1-1)
1be less than the width S of shaping groove (2-1)
2;
A side of described shaping groove (2-1) have match with composite plate rounded shape and recessed slot pulling (2-2) shaping with the tangent round end be connected of shaping groove (2-1), the arc radius of the shaping recessed slot pulling of described round end (2-2) equals described composite plate plate body round end radius and decorative paper thickness sum; Another side end edge (2-1-1) of described shaping groove (2-1) and the die joint (F of upper module (2)
2) keep angle α and hand in monoclinic phase;
Also comprise reed (3); The reed groove (1-2) of accommodating reed (3) is provided with in the width direction in the upper plane of the shaping boss (1-1) of lower module (1); Described reed (3) is in bending-like, and its bottom level section (3-1) is connected with the bottom surface of reed groove (1-2), and its tilting free end can be supported on the inner side G point place at composite plate round end position, and when itself and reed groove (1-2) phase compound tense, or the indentation mutually concordant with the side (1-1-1) of shaping boss (1-1) of its free end; The degree of depth of described reed groove (1-2) is equal to or greater than the thickness of reed (3); This preparation method adopts the hot press of vertical displacement movement to be process equipment, and have the shaping plate body of arc wrap angle > 90 ° to 180 ° of round ends for turned blank with one end, it is characterized in that, its preparation method comprises the following steps:
A, the non-blunt end of plate body blank (5) is processed into inclined-plane, and the inclined-plane of described plate body blank (5) one end, consistent with the gradient of a side end edge (2-1-1) of the shaping groove (2-1) of upper module (2);
B, lower module (1) and upper module (2) to be equipped with mutually with the die shoe of process equipment hot press and upper bolster respectively; And the free end of reed (3) points to the shaping recessed slot pulling (2-2) of round end of upper module (2);
C, cover bag impregnation decorative paper (4) on plate body blank (5) surface, then the plate body blank (5) being surrounded by impregnation decorative paper (4) will be covered, abutted against by G point place inside its round end and reed (3) free end, and make the free end of blunt end hanging in reed (3) of plate body blank (5); The other end of plate body blank (5) is then shelved in the upper plane of shaping boss (1-1) of lower module (1), and by adjustment, plate body blank (5) is correctly located, thus order to cover the plate body blank (5) being surrounded by impregnation decorative paper (4) tilting on the shaping boss (1-1) of lower module (1), and the width (S of tilting plate body blank (5) upright projection
3) be less than the width (S of the shaping groove (2-1) of upper module (2)
2);
D, start process equipment hot press, lower module (1) is along with the ascending motion of process equipment hot press, described plate body blank (5) blunt end is first advanced in the shaping groove (2-1) of upper module (2), along with lower module (1) continues to rise, shaping groove (2-1) bottom land of plate body blank (5) blunt end and upper module (2) abuts against, and the other end of plate body blank (5) enters in the shaping groove (2-1) of upper module (2), and the inclined-plane of a side end edge (2-1-1) of its tail end inclined-plane and shaping groove (2-1) is suitable, and rise along with the continuation of lower module (1), under the promotion of a side end edge (2-1-1) of described shaping groove (2-1), the blunt end of described plate body blank (5) is to motion in the shaping recessed slot pulling (2-2) of round end of shaping groove (2-1), until plate body blank (5) positive stop, and between the shaping groove (2-1) that decorative paper (4) remains on plate body blank (5) and upper module (2) and the recessed slot pulling of round end (2-2), 8 seconds ~ 30 second time is kept after plate body blank (5) puts in place, to be hot bonding with plate body blank (5) after making impregnation decorative paper (4) be heated and integral, then the die shoe of process equipment hot press declines, the shaping boss (1-1) of lower module (1) and manufactured goods exit the shaping groove (2-1) of upper module (2) thereupon, and namely obtained finished product one end has the decorative paper composite plate of arc wrap angle > 90 ° to 180 ° of round ends.
2. preparation method according to claim 1, is characterized in that, described plate body blank (5) is wood plate, or artificial density board, or multilayer composite sheet.
3. preparation method according to claim 1, it is characterized in that, described impregnation decorative paper (4), is alundum (Al2O3) thermoplastic resin impregnation abrasion-proof paper, or facing paper thermoplastic resin gum dipped paper, or aluminium foil or Copper Foil or titanium foil thermoplastic resin impregnation metal forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158171.8A CN102689336B (en) | 2012-05-21 | 2012-05-21 | Mold and method for manufacturing laminated paper composite plate with round head having arc wrap angle larger than 90 degrees and smaller than 180 degrees at one end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158171.8A CN102689336B (en) | 2012-05-21 | 2012-05-21 | Mold and method for manufacturing laminated paper composite plate with round head having arc wrap angle larger than 90 degrees and smaller than 180 degrees at one end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102689336A CN102689336A (en) | 2012-09-26 |
| CN102689336B true CN102689336B (en) | 2015-04-08 |
Family
ID=46855151
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210158171.8A Active CN102689336B (en) | 2012-05-21 | 2012-05-21 | Mold and method for manufacturing laminated paper composite plate with round head having arc wrap angle larger than 90 degrees and smaller than 180 degrees at one end |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005028089A1 (en) * | 2005-06-17 | 2006-12-28 | Olaf Thiede | Glued composite for sticking floors in rail, road vehicles or aircraft, comprises flat wood panels comprising adhesive surfaces with a groove and an electrically conductive molded article fixed in the groove in unit components |
| CN1326676C (en) * | 2005-08-03 | 2007-07-18 | 蔡祖生 | Method for manufacturing composite plate with lateral round end arc wrap angle ranged from 90 degrees to 180 degrees and products thereof |
| US20070254987A1 (en) * | 2006-04-26 | 2007-11-01 | Associated Materials, Inc. | Siding panel formed of polymer and wood flour |
| US20090226713A1 (en) * | 2006-04-26 | 2009-09-10 | Festa Daniel E | Siding Panel Formed of Polymer and Wood Flour |
| CN201273056Y (en) * | 2008-08-07 | 2009-07-15 | 上海菲林格尔木业股份有限公司 | Stair strip used for steps in floor pavement |
| CN100577448C (en) * | 2008-12-23 | 2010-01-06 | 常州法司特木线条厂 | Coating processing method for composite ornamental board with special-shaped lateral part and product thereof |
| US20110146168A1 (en) * | 2009-12-18 | 2011-06-23 | Van Genderen Bas | Paper Laminated Stair Tread and Methods of Making and Using Same |
| CN102398291B (en) * | 2011-11-14 | 2014-07-02 | 常州朗坤装饰材料有限公司 | Stair strip sheet material with settled corners, method for manufacturing stair strip sheet material, and processing mold of stair strip sheet material |
| CN202640496U (en) * | 2012-05-21 | 2013-01-02 | 常州市向荣装饰材料有限公司 | Die for manufacturing faced paper composite board provided with round head with arc wrap angle larger than 90-180 degrees at one end |
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2012
- 2012-05-21 CN CN201210158171.8A patent/CN102689336B/en active Active
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