CN102691388A - Three-dimensional pulp moulding decorating plate as well as manufacturing method and application thereof - Google Patents
Three-dimensional pulp moulding decorating plate as well as manufacturing method and application thereof Download PDFInfo
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- CN102691388A CN102691388A CN2012101998891A CN201210199889A CN102691388A CN 102691388 A CN102691388 A CN 102691388A CN 2012101998891 A CN2012101998891 A CN 2012101998891A CN 201210199889 A CN201210199889 A CN 201210199889A CN 102691388 A CN102691388 A CN 102691388A
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Abstract
The invention relates to a three-dimensional pulp moulding decorating plate as well as a manufacturing method thereof by using a common pulp moulding device and a practical application thereof in the field of decoration. The height of the three-dimensional protruding part of the three-dimensional pulp moulding decorating plate ranges from 5mm to 150mm and the ordinary wallpaper is not as high as the protruding part. The three-dimensional pulp moulding decorating plate can be spliced and cut, and the wallpaper with the same specification and different patterns can be spliced into more patterns.
Description
Technical field
The present invention relates to a kind of 3 D stereo paper mould decorative panel and manufacturing approach thereof and decorating the application in field.Specifically, relate to a kind of three-dimensional 3 D stereo paper mould decorative panel, use the method for the three-dimensional 3 D stereo paper mould of general paper mould equipment making decorative panel to reach practical application in the field of decoration.
Technical background
The wallpaper of selling in the market all is the plane; Although on the basic material of wallpaper, broken through the traditional concept of " paper " in general sense; Adopt paper substrate or chemical fibre, glass fiber, nonwoven, polyvinyl (PE), polyurethane (PU), polyvinyl chloride (PVC), etc. material carry out compoundly as basic material, through printing and technology such as embossing combination process or surface blister, make wallpaper that a lot of variations take place on pattern, pattern, style; But; Traditional wallpaper can't be broken through the limitation of traditional form owing to the restriction of material and technology self in three-dimensional contouring, general solid highly can surpass 5 times of base material thickness; Be that general three-dimensional contouring highly can surpass 5 millimeters, otherwise can't " rolling " when producing.
Summary of the invention
The technical problem that the present invention will solve is to break through the shortcoming of prior art; Adopt universal paper mould equipment; Use special-purpose 3 D stereo mould, make through technologies such as moulding, typing, integers that a kind of three-dimensional stereo moulding height reaches several times of paper substrate thickness, 3 D stereo paper mould decorative panel more than tens times even hundred times.On the material of wallpaper manufacturing, having broken through prior art, having used the material of paper making pulp, employing is natural papermaking material fully, and used filler, auxiliary agent all are environmental protection.Handling, make material itself to have environmental protection, waterproof, fire prevention, thermal insulation, advantages of high strength, application life through modification is that the wallpaper more than 2 times, that use of general wallpaper can reclaim papermaking or degraded fully under field conditions (factors), environment is lower than common wallpaper, has, easy construction, avoided traditional wallpaper alice, cracking less than pollution, cost; Damaging 3 D stereo paper mould decorative panel, its manufacture process of the drawback of back integral replacing does not have waste water, waste residue, toxic emission, and industrial water recycles through filtration.
The manufacturing approach of 3 D stereo paper mould decorative panel of the present invention is achieved through following technical proposals, and following steps are arranged:
1, use general paper mould equipment and paper mould method: this paper mould equipment comprises the equipment that drags for slurry method or slip casting method production, and this paper mould method comprises production methods such as the slurry method of dragging for (inhaling the slurry method) production or slip casting method;
2, use mould: use copper material, stainless steel material or aluminum alloy materials; According to the designing requirement of product, make the mould of paper mould equipment, this mould is divided into moulding form, shaper, shaping mould; Wherein shaper is divided into punch and die; Behind two mould matched moulds, form the cavity structure of 3 D stereo, to hold the blank of high-moisture percentage;
3, select the paper making pulp raw material of removing sand grains, earth for use; Said paper pulp raw material is several kinds of paper making pulp raw materials among papermaking softwood pulp commonly used, hardwood pulp, bamboo pulp, bagasse pulp, straw pulp, reed pulp, cotton stalk pulp, the cotton linter pulp, and adds a part of solid packing and necessary auxiliary agent.According to the long and short fiber characteristic; Prepare required mixed pulp raw material; This paper pulp raw material is joined in the pulper, add neutral clean tap water or deionized water, need according to the power termination ability or the production of shredder; The paper pulp of compounding high concentration, middle concentration or low concentration is generally the water slurry ratio and is 10: 1 low concentration paper pulp; The pulverized above-mentioned paper pulp that flows out in the pulper is sent in the centrifugal litter cleaning machine, removed sand once more therein; If the cleanliness factor accords with production technological requirement of paper pulp can directly be omitted centrifugal desanding operation.Pulverized paper pulp gets into joins stock tank; Add neutral clean tap water or deionized water therein again; And in paper pulp, add auxiliary agent; Comprise auxiliary agent and solid packings such as waterproof agent, fire retardant, sizing agent, retention agent, the adjustment pulp density, making the water and the ratio of dry pulp weight is 100: 1-100: 0.7; To guarantee the flowability of paper pulp.Being convenient to line transportation does not precipitate.The paper pulp that modulates is sent to the filling system of paper mould equipment, and the moulding filling system of paper mould equipment generally is provided with proportioning device, and unnecessary paper pulp can be back to reserve pit, participates in the recycling of defeated slurry system.
4, when the paper mould formation system is worked, open the blowing valve, paper pulp relies on drop gravity; Be deposited on the moulding form of paper mould, the surface of mould is covered with one deck and the corresponding to metal gauze of three-dimensional stereo moulding, because the mutual bonding overlap joint of paper pulp fiber; At the metal gauze surface precipitation, the moisture in the paper pulp flows out from the bottom of mould, and paper pulp is detained; Form the wet base of three-dimensional 3 D stereo paper mould decorative panel,, generally on former, be connected with vacuum mechanism in order further to reduce the moisture in the paper pulp; Utilize the moisture sucking-off in the base of will wetting of the negative pressure of air, moisture content further reduces, and general wet base moisture content at this moment is about 75%.Use machinery or manual method, wet base is transferred to the modular system of paper mould, on this equipment shaper is housed, mould is made up of die and punch.Behind the matched moulds, between moulding, form the die cavity of a determining deviation, with the wet base of three-dimensional stereo moulding paper pulp that holds.The upper and lower of mould all is equipped with heater.Discharge fast and evaporation to guarantee the moisture in the wet base.The temperature range of heating is between 140 ℃-235 ℃, and shaping time reaches with the moisture content of plate body and is lower than 10% and is advisable, and the adjustment heating for fixing shape time is generally between 3-6 minute.The too high meeting of temperature makes the product variable color, crosses that low then shaping time is long, and moisture is too high and cause the plate body distortion.The pressure of forming machine is generally at 3-8kg/cm
2, when being lower than this pressure, flaws such as hole, crackle appear in the surface of product easily, and when being higher than this pressure, variable color, black seal etc. appear in the surface of product easily, and wet base forms moisture content and is not more than 10% blank through after the thermal finalization.Seal, impurity, crackle, variable color should bright and clean nothing be deceived in the blank surface of product, and moulding meets standard.
5, special-purpose shaping mould is used in shaping, and mould is made up of four sides cutting knife and positioning module, utilizes the pressure and the stroke of press, and the edge that blank is unnecessary excises, and forms the product of size up to specification.
6, through check and packing, promptly obtain common 3 D stereo paper mould decorative panel
Overlay film is the optional operation in the 3 D stereo paper mould decorative panel manufacturing process; In the time of generally need doing surface coating, can carry out overlay film to the single or double of plate body according to coating processes, the mould of overlay film has the branch of die and punch; The effect of mould is that the plate body three-dimensional stereo moulding is located; Fixedly treat the product space of overlay film, avoid displacement in overlay film, atmospheric pressure injures plate body when preventing overlay film.The employed equipment of overlay film is universal negative pressure of vacuum laminating machine or positive and negative pressure laminating machine, through heating, pressurization, plastic sheeting is sticked on the surface of three-dimensional stereo moulding; During plate face overlay film; Employed plastic sheeting comprises: pvc (polyvinyl chloride) or pe (polyvinyl) and pu (polyurethane), bopp (biaxially oriented polypropylene film) pet thin-film materials such as (polyester films), these materials can be that different colours, texture, texture, thickness are the 0.05-0.5 millimeter.The adhesive that overlay film uses is divided into water-base cement or solvent-borne type glue.The 3 D stereo paper mould decorative panel that covered film also can also carry out application to its surface, is convenient to day upgrade color long afterwards.
The 3 D stereo paper mould decorative panel of overlay film can not carry out personalized colorful and decorate its external coating coating when installation, and the coating that is coated with comprises water paint and oil paint.
Said mixing paper making pulp raw material is the cooperation ratio of all kinds of paper pulp, meet the plate body requirement of strength, considers economy simultaneously.Generally speaking, the ratio of short fiber paper pulp in raw material is no more than 30%, also can use the ratio of a part of returns (defective plate body or the leftover pieces promptly pulverized) returns to be not more than 20%.
Said filler is generally powders such as calcium carbonate, French chalk, kaolin, calcite, and the purpose of adding filler is to reduce the paper pulp consumption, improves density of product, hardness, intensity.The addition of filler is not more than 20% of dry pulp weight in principle, crosses the intensity reduce product at most, the general particle diameter of used filler at 300 orders between 1200 orders.Described auxiliary agent is generally waterproof agent, drying strengthening agent, wet strength agent, retention agent, sizing agent, filling modifier etc., and various auxiliary agent adding proportions need be adjusted with prescription according to the characteristic of auxiliary agent.Described fire retardant generally uses magnesium hydroxide, aluminium hydroxide as fire retardant, and this based flame retardant can substitute a part of filler.If use nitrogen Phosphorus as fire retardant, then in process of production, should suitably reduce temperature, prolong shaping time, otherwise can influence the whiteness and the surface quality of product.The whiteness of adjustment product, general standard are that (whiteness is meant the reflectivity of the paper surface of white or approaching white to blue light, to represent with respect to the percentage of standard oxidation magnesium plate reflectivity) is more than 80%.Can or add the whiteness that titanium white powder, kaolin are adjusted paper pulp through the match ratio between the paper pulp of adjusting different whiteness.
Said mixing paper making pulp raw material is papermaking softwood pulp 30-40 weight % and the paper pulp of bagasse pulp 30-40 weight % and bamboo pulp 10-20 weight % and the paper pulp returns of 10-20 weight %, and the filler of the 300 order particle diameters of interpolation 10-20 weight % is as raw materials for production.
Preferred said mixing paper making pulp raw material is papermaking softwood pulp 35-45 weight %, bagasse pulp 20-25 weight %, and the returns that bamboo pulp 15-25 weight % adds 10-20% again is as raw materials for production.
When said paper pulp raw material is pure pulp; Add solid packing and auxiliary agent: said solid packing is: be generally calcium carbonate (fine particle calcium carbonate, coarse whiting), French chalk, kaolin,, titanium white powder; Said auxiliary agent is: one or more in fire retardant, waterproof agent, wet strength agent, drying strengthening agent, sizing agent, retention agent, the filling modifier add clean tap water or deionized water, in the making beating stage; Generally according to the low concentration pulping process; Being controlled at the water slurry ratio is 10: 1-15: between 1, pulp density is controlled in dry pulp weight % between 7.5-10 weight %, the whiteness of control paper pulp is between 80-100; Through the match ratio of adjusting different pulp brightness or the whiteness of adding titanium white powder, kaolin control paper pulp; In the preparation pulping process, the solid packing of interpolation accounts between the 10-20 weight % of dry pulp gross weight in weight %; The particle diameter of solid packing is between the 300-1200 order; The addition of waterproof agent accounts for the 3-10 weight % of dry pulp gross weight in weight %; The addition of sizing agent is between the 0.5-2 weight %; The addition manner of fire retardant is the mode of choosing any one kind of them in the dual mode below: the slurrying stage is added paper pulp aluminium hydroxide or magnesium hydroxide as fire retardant, when this fire retardant adds, can substitute the quantity of other solid packings.Also can use the nitrogen phosphorus type flame retardant, when using the nitrogen phosphorus type flame retardant, can add in the slurrying stage, general addition is controlled at the 20-50% of aqueous solution ratio, also can after finished product is processed, spray this fire retardant again on the surface.
Method as previously discussed is characterized in that:
Said mixing paper making pulp raw material is the paper pulp raw material of papermaking softwood pulp 30 weight %, bamboo pulp 20 weight %, bagasse pulp 50% weight; Add solid packing and be meant any filler that adds in calcium carbonate or these two kinds of solid packings of French chalk: the calcium carbonate addition is in weight %; Be controlled between the 10-15 weight % of dry pulp gross weight; The French chalk addition is controlled between the 5-10 weight % of dry pulp gross weight in weight %; The total addition level of filler is not more than 20% of dry pulp weight, and when using organic fluoride as waterproof agent, addition is between the 0.5-2.0 weight % of dry pulp gross weight; Addition when using cation colophony glue as sizing agent is as between the 1-5 weight %; The addition manner of fire retardant, the mode of can be below choosing any one kind of them in several kinds of modes, one is to use the fire retardant of nitrogenous phosphorus; When adding in the slurrying stage; Addition is between the 10%-30% of tap water or deionized water total amount, two additions when being to use the hydroxide inorganic material as fire retardant be controlled at dry pulp weight 20% in, and reduce the consumption of other solid packings: also can be in the manufactured goods stage; Dispose nitrogenous phosphorus fire retardant solution, the surface of wallpaper is sprayed.
A kind of 3 D stereo paper mould decorative panel; It is characterized in that: 3 D stereo paper mould decorative panel is the three-dimensional stereo moulding that is made up of jointly planar section, bossing, recess; Has plank frame; This 3 D stereo paper mould decorative panel be monomer or individual, through with a plurality of same specifications, with the splicing of the monomer of pattern, combination, arrange the three-dimensional 3 D stereo paper mould decorative panel that forms multiple pattern; Can brushing paint or pastes layer of plastic film on its surface in the surface of 3 D stereo paper mould decorative panel.3 D stereo paper mould decorative panel has multiple pattern, and said pattern is meant the three-dimensional shape of being made up of through the space pattern or the different three-dimensional contouring splicing of the formed continuous rule of different connecting methods 3 D stereo paper mould decorative panel; The height of the three-dimensional projection of 3 D stereo paper mould decorative panel is higher than datum 5mm between the 150mm.Be arbitrarily cutting, splicing, change the 3 D stereo paper mould decorative panel of monomer separately; Above-mentioned 3 D stereo paper mould decorative panel is a kind of shape or more than one shape in rectangle, parallelogram, triangle, hexagon, the trapezoidal geometry.The paper substrate thickness of wallpaper and the ratio of three-dimensional projection are 1: 5-1: 300, and generally between 0.5mm-5mm, proportion is between 0.7-1.5 for 3 D stereo paper mould decorative panel plate body thickness.3 D stereo paper mould decorative panel can be used as indoor wall, ceiling is decorated the interior wall, ceiling decoration, the wall that use, can be widely used in household, public arena, office, hotel's used by hotels and restaurants by and decorated.
About the addition of waterproof agent, the kind of present operational waterproof agent is a lot, and the difference of price and effect is also very big, and the principle of component design is usually, is principle with the coefficient of expansion that reduces product, suitably adjusts addition.General fluoride waterproof agent, gum rosin waterproof agent, the waterproofing agent of organosilicon etc. of using are selected waterproof agent according to the proportioning of paper pulp and the characteristic of filler, try to achieve the addition of the best waterproof agent of certain or several kinds of paper pulp.Use the consumption of sizing agent together to consider component design with waterproof agent usually, additional each other.
The mode of producing moulded paper pulp product at present is a lot; Mostly be to adopt slurry method of dragging for (inhaling the slurry method) or slip casting method production; In process of production; Drag for slurry method (inhaling the slurry method) and be used in industrial packaging and agricultural product packaging aspect basically, and slip casting method requires grouting amount accurate, is fit to the product that production specification is accurate, standard-required is high.Use grouting process, the dry run of product is accomplished in mould, therefore, can guarantee the end product quality of 3 D stereo paper mould decorative panel.
Should be noted that when product quality is had relatively high expectations these two kinds of fillers of French chalk and calcium carbonate can not use simultaneously, that is: when using the talcum powder as filler; Just can not add calcium carbonate again; Vice versa, because filler will influence the fiber content of paper pulp too much, influences quality; Use the purpose of filler to be to reduce cost, but can not take quality into account.The interpolation of titanium white powder mainly is adjustment goods whiteness, but cost is higher, and in the ordinary course of things, whiteness is not generally just added the whiteness that titanium white powder is adjusted paper pulp greater than the paper pulp of 80 degree.
About the problem of solid packing, calcium carbonate and French chalk use very general in various paper production as the raw material of papermaking, and wherein the use of filler has the paper pulp of reduction consumption, increases paper products intensity, reduces the effect of paper cost.The granularity of filler can be selected between the 300-1200 order, and general 300 orders just can meet the demands, and requires the granularity of filler to be no more than 0.05% at 300 mesh screen residues.
The interpolation of auxiliary agent all is the mass ratio with the pulp dryer state, as adding foundation.
The height and the thickness of the 3 D stereo paper mould decorative panel of each shape have very big-difference; Sometimes same specification is also variant with the thickness of the 3 D stereo paper mould decorative panel of pattern, generally is controlled at ± 10% all belong to qualified ± 10% with interior with interior, Weight control.
The appearance and size of mould will meet the work top dimensional requirement of equipment, and what mainly will consider is that heating panel size on the work top will match with the size of mould, to avoid the mould inequality of being heated when the heating;
Using the purpose of deionized water is to avoid the xanthochromia of finished product, uses the tap water of neutral water usually, can satisfy the production needs; But the water quality of various places is different, and particularly the pH value is different, and the base color of product is had very big influence; Simultaneously, when using aluminium alloys as mold materials, the water of meta-alkalescence can cause corrosion to mould; Therefore the pH value of water is adjusted to 7, also can use light water in principle.
Should be noted that: various moulds complement one another and make and use, and the concrete size of mould decides according to the basic size of work top.At present domestic have tens tame factories producing paper mould equipment, the size of work top, and the equipment of looking each manufacturer production is different and very big-difference is arranged, so the exploitation of mould and design, decide according to the equipment that is relied on; So-called " general paper mould equipment " is meant equipment present domestic production or import, can not be limited on the equipment of an equipment or a manufacturer production.Equally; The mode of heating of mould is also different, and the electric hot plate heating is arranged, and multiple modes such as heat-conducting oil heating, superheated steam heating are also arranged; Also has slurry (the inhaling the slurry method) mode of dragging for that adopts; Drag for the slurry method or inhale the slurry method when producing in employing, condition is better takes the tunnel cave drying mode, and the mode of the employing daylight airing that condition is a little bit poorer is come the dry wet base.These activitiess can be produced 3 D stereo paper mould decorative panel.The above-described slurry method (suction slurry method) of dragging for is produced and is not heated; Be meant that in process of production moulding (plastotype) mould does not heat, form wet base through compression; Wet base heats in drying kiln removes moisture (or adopting sunlight to be exposed to the sun); And then carry out shaping, and need heat shaping mould during shaping, play the effect of flatiron typing.
3 D stereo paper mould decorative panel has plank frame; Above-mentioned " plank frame " is meant that 3 D stereo paper mould decorative panel is different from whole structure of common wallpaper; General common wallpaper becomes " volume ", and per 5 meters is a unit " volume ", and 3 D stereo paper mould decorative panel is individual; Each individual size is consistent; But be multiple thickness, shape, gabarite again, individual 3 D stereo paper mould decorative panel is an independent three-dimensional graph, when individual wallpaper assembled arrangement to just forming a new global shape together; The wallpaper of same gabarite different pattern combined crosswise arrangement each other simultaneously, the variation of pattern just has N like this.As all be the 3 D stereo paper mould decorative panel of 300mm * 300mm, three kinds of patterns are arranged, just can choose at random, any one, two or three collocation together, be permutated and combined as diversified pattern according to oneself wish.And will reaching this combination requirement, common wallpaper just is difficult to accomplish.3 D stereo paper mould decorative panel can also splice, and pictorial pattern is akin can be spliced arbitrarily, as long as have a limit to equate as foursquare and rectangular, just can splice.All right cutting is carried out the cutting splicing according to the size in room to wallpaper.
Specification about 3 D stereo paper mould decorative panel; To decide according to the work top size of paper mould equipment; Maximum at present work top is of a size of 1080mm * 760mm; Therefore, the specification of 3 D stereo paper mould decorative panel is under the condition of capacity of equipment, to design according to the market demand, N kind dimensions between 100 * 100mm-600 * 1000mm.Also can be rectangle, parallelogram, equilateral triangle, triangle, hexagon, geometry such as trapezoidal.
Should be noted that:
The shaping and the dryness finalization of wet base are two processes, and first process is moulding, during moulding; Be will contain the wet base of paper pulp of the above weight moisture of 70%--90% in die for molding, the condition of moulding is the paper pulp that q.s is arranged, the three dimensions volume of mould, the draining duct; Clamping pressure, the matched moulds gap of mould etc., so each thickness of product, proportion require different; The pressure of matched moulds is also different, and the press stroke during typing is also different with pressure.Must be according to concrete equipment and product requirement decision pressure.The temperature of mould when temperature refers to typing, general requirements rely on heating panel to mould self heating when the shaper matched moulds, and when matched moulds, pressure and heat act on wet base simultaneously, make wet base dryness finalization in shaper.The temperature requirement of general dryness finalization is not less than or is higher than this two temperature ranges between 140-230 ℃.The blank moisture content of producing is controlled between the 8%-12%.
The manufacturing materials of mould generally adopts copper material, aluminum alloy materials and stainless steel material.Common carbon junction steel also can be made mould, but because the easy oxidation and rusting of carbon junction steel, and there is pollution on the surface of product; Safeguarding also wastes time and energy; Mould inside has not easy to clean of a lot of grooves, and therefore, above-mentioned three kinds of materials are adopted in the making of mould basically; Not only be convenient to heat conduction but also be difficult for oxidation, can also satisfy the pressure of press and indeformable.
Should explain:
So-called " physical dimension of regulation " is meant the gabarite of finished product, belongs to prior art, and this size is the shape decision according to product, and the geometry in protection domain all is " physical dimension of regulation ".The process that side cut is chamfered generally is mounting cutter on press top, and the mould of bottom has cutlery, and when press moved downwards, the edge excision with the blank that mediates made it " rule side ".
Its manufacturing approach of 3 D stereo paper mould decorative panel of the present invention has following beneficial effect compared with prior art:
1, between the 150mm, the height of its projection is that common wallpaper is beyond one's reach highly to the height of the three-dimensional projection of 3 D stereo paper mould decorative panel at 5mm;
2, use method of the present invention, adopt universal paper mould equipment, adopt mould with 3 D stereo cavity structure, rely on slip casting or drag for sizing process molded, can develop different patterns, difformity, different-thickness and three-dimensional highly wallpaper;
3, the material that the present invention adopted is natural papermaking material fully, and used filler, auxiliary agent all are environmental protection, meets fully that national requirements for environmental protection and user follow the fashion, three-dimensional, colorful demand, has good environmental protection effect and social effect;
4, that product has is fire-retardant, the function of waterproof, protection against the tide, insulation, heat insulation, noise reduction sound, shock resistance resistance to deformation, therefore, can be used in widely in the decoration of interior wall, ceiling, wall in family, office, hotel;
5,3 D stereo paper mould decorative panel has not to be afraid of collision, not to have acute angle, can be used in widely that children live and the decoration of the interior wall in the place of playing, ceiling, wall in;
6, the construction of 3 D stereo paper mould decorative panel is carried out according to the construction sequence of general wallpaper, and is easier than the construction of general wallpaper, can change separately for the wallpaper that damages, and has good economic benefits.3 D stereo paper mould decorative panel can be used in wall finishing, furred ceiling finishing and generally need the decorations of sound insulation, thermal insulation occasion.3 D stereo paper mould decorative panel can splice, cutting, and the wallpaper of the different pattern of same specification can splice more color pattern.
Description of drawings
Fig. 1 is the process flow diagram of the manufacturing approach of 3 D stereo paper mould decorative panel of the present invention;
Fig. 2 is the floor map of 3 D stereo paper mould decorative panel of the present invention;
Fig. 3 is the generalized section of 3 D stereo paper mould decorative panel of the present invention;
Fig. 4 is the splicing effect figure of 3 D stereo paper mould decorative panel of the present invention;
Fig. 5 is the lateral view of 3 D stereo paper mould decorative panel of the present invention.
Among the figure:
1. paper pulp raw material or paper pulp raw material feed intake (pure wood pulp+high-quality reed pulp, bamboo pulp, bagasse pulp, cotton pulp, straw pulp etc.);
2. pulper;
3. centrifugal litter cleaning machine;
4. water (neutral tap water or deionized water);
5. join stock tank;
6. pulp storage tank;
7. solid packing (French chalk, kaolin, calcium carbonate);
8. auxiliary agent (fire retardant, waterproof agent, sizing agent, retention agent, modifier);
9. high-order stock tank (smart amount container);
10. slip casting suction strainer;
11. wet base dehydration;
12. thermocompression forming;
13. vacuum system;
14. water separator;
15. blank;
16. cut edge;
17. overlay film;
18. check;
19. packing;
20. be the planar section of 3 D stereo paper mould decorative panel;
22. be the bossing of 3 D stereo paper mould decorative panel;
23. be the recess of 3 D stereo paper mould decorative panel.
The specific embodiment
To combine accompanying drawing that the 3 D stereo paper mould decorative panel of this invention and the manufacturing approach of 3 D stereo paper mould decorative panel are done further to describe below:
Embodiment 1
Shown in Fig. 1-4, the manufacturing approach of 3 D stereo paper mould decorative panel is achieved through following technical proposals, and this method has following steps:
1. use general paper mould unit or equipment: this equipment comprises the equipment that the slurry method is produced or slip casting method is produced that drags for;
2. use mould: use copper material, stainless steel material or aluminum alloy materials, according to the designing requirement of product, make the mould of paper mould equipment, the inner chamber of this mould is a 3-D solid structure;
3. select the paper pulp raw material pulpboard 1 of the papermaking softwood pulp 40 weight % that remove sand grains, earth, bamboo pulp 20 weight %, bagasse pulp 40 weight % for use; This paper pulp raw material pulpboard 1 is joined in the pulper 2; Adding pH value is 7 water or tap water or deionized water 4; The water slurry ratio is 10: 1, and paper pulp is pulverized;
4. the pulverized paper pulp that will from pulper 2, flow out is sent in the centrifugal litter cleaning machine 3, removes sand once more therein;
5. the pulverized paper pulp after removing sand is sent into and is joined stock tank 5; Add the pH value therein again and be 7 water or tap water 4; To the water slurry part by weight be 100: 0.7; Add auxiliary agent 8 (when adding the nitrogen phosphorus type flame retardant, 30-40%, the addition when adding the fluoride waterproof agent that is about water inventory be dry pulp weight 5.5%, the addition of sizing agent be the dry pulp total amount 1%), pulp density is controlled at dry pulp weight counts 0.7%;
6. the paper pulp that modulates gets into reserve pit 6;
7. with pump the paper pulp that modulates is squeezed into the high-order stock tank (smart amount container) 9 of paper mould unit forming machine;
8. the 3 D stereo moulding form is housed on the forming machine; There are one deck and the corresponding to metal gauze of three-dimensional contouring in the surface of mould, and the periphery of moulding form has a press box, when press box is descending; Form the stock tank that certain volume is arranged with mould; Before the blowing valve of opening device, a certain amount of clear water is injected in the stock tank slurries homogeneous precipitation 10 on gauze when guaranteeing slip casting.Open dump valve, paper pulp in the smart amount container is all flow in the moulding form stock tank and gauze on precipitate, form wet base with three-dimensional stereo moulding; The moisture of paper pulp flows out from the bottom hole of shaping mould, in order to reduce the moisture in the wet base, at the bottom and the vacuum machine of shaping mould; 13 are communicated with, and under action of negative pressure, paper pulp are dewatered 11; The moisture content of wet base finally is reduced to about 70% of gross weight, and the vacuum of vacuum mechanism is in the 0.03-0.08 MPa, the water of sucking-off; Through water separator 14, circulation next time is participated in the pond 4 that flows into pulping system.Behind the wet blank molding with stock tank and mold separation; Use mechanical device or manual work that gauze is together taken out together with wet base; Put into the mould 12 of forming machine, shaper is made up of two parts up and down, during matched moulds; The die cavity that forms three-dimensional stereo moulding between two moulds is to hold wet base, and the upper and lower of mould all is equipped with heating panel and is used for heating mould.About 140 ℃-230 ℃ of the temperature of mould, patrix links to each other with the movable slide plate of forming machine, and counterdie is placed on the workbench of forming machine; Forming machine belongs to press, uses cylinder or hydraulic cylinder to drive guide rod mould is exerted pressure, and the pressure of press acts on wet base during startup; Wet base is pushed, and every square centimeter of power that applies the 3-8 kilogram is under the acting in conjunction of temperature and pressure; Wet base attenuation, moisture is extruded and is evaporated, and forms the blank 15 of product.The moisture content of blank about about 10%;
Above-mentioned mould is the mould of 3-D solid structure; The inner-cavity structure of this mould has quantitative three dimensions; When slip casting, have quantitative geometric volume or have the quantitative geometric volume that the 3D shape plastotype that can satisfy product requires, in the gap of convexconcave part, hold paper pulp behind the matched moulds;
Above-mentioned 3 D stereo mould is made up of (1) moulding form, (2) thermocompression forming mould, two parts, is installed on the cover paper mould equipment;
9. the blank that comes out of typing can be deposited separately, also can directly be sent to 16 shapings of cutting edge of shaping unit, and the shaping process is: blank 15 is placed on the shaping mould; The top of shaping mould is installed in the guide rod bottom of shaping press, and the bottom of mould is installed on the shaping support, and mold periphery is equipped with cutlery; The positioner of 3 D stereo is housed in the middle of the mould; When startup press guide rod is descending, drive the blade of mold periphery, with the edge excision of blank 15;
Through the 3 D stereo paper mould decorative panel of shaping through checking 18 just can packing 19 to dispatch from the factory after qualified.
Carry out surface coating step 17 11. can get into coating processes for the 3 D stereo paper mould decorative panel that the overlay film requirement is arranged:
Coating processes is optional operation, during overlay film, 3 D stereo paper mould decorative panel is prepared external coating one deck glue of overlay film; After (glue is generally aqueous polyurethane adhesive) treated the glue surface drying, individual was arranged in n one group with 3 D stereo paper mould decorative panel, placed on the jig in the laminating machine workbench; The bottom of laminating machine workbench is connected with vavuum pump, plastic sheeting is covered workbench top and makes it airtight, at airtight environment of the inner formation of workbench; Again workbench is placed in the heating cabinet of laminating machine, make film softening, the glue activation; The open vacuum system makes the vacuum of the inner 0.03-0.08 of formation of workbench MPa, at this moment; There is the atmospheric pressure of equivalent to act on softening film surface, makes film be covered on the surface of 3 D stereo paper mould decorative panel.After treating the film cooling and shaping, product is taken out, eliminate unnecessary edge film.During overlay film, can the single face overlay film, also can two-sided overlay film, the color of film can be plain color also can be colored.The product of overlay film can be packed after the assay was approved and dispatch from the factory through test package step 18,19.
Embodiment 2
The manufacturing approach of 3 D stereo paper mould decorative panel is achieved through following technical proposals, and this method has following steps:
1. use general paper mould equipment: this equipment comprises the equipment that the slurry method is produced or slip casting method is produced that drags for;
2. use mould: use copper material, stainless steel material or aluminum alloy materials, according to the designing requirement of product, make the mould of paper mould equipment, this dies cavity structure is a 3-D solid structure;
3. select the paper pulp raw material 1 of the papermaking softwood pulp 50 weight %, bamboo pulp 30 weight % and the corner returns 20 weight % that remove sand grains, earth for use; This paper pulp raw material is joined in the pulper 2; Add the pH value and be 7 water or tap water, deionized water 4, the water slurry ratio is 8: 1, and paper pulp is pulverized; And make this paper pulp fiber length between the 1-4 millimeter, no solid packing;
4. pulverized paper pulp gets into joins stock tank 5; Add the pH value therein once more and be 7 water or tap water or deionized water 4, to the water slurry ratio be 100: 1-100: 0.7, pulp density is controlled at dry pulp weight counts 0.7 weight %; Add auxiliary agent 8 (fire retardant, waterproof agent, sizing agent); The addition of waterproof agent (alkyl ketene dimer) is 3 weight % of dry pulp gross weight, and the addition of sizing agent (acrylic acid ester sizing agent) is 1 weight % of dry pulp gross weight;
5. the paper pulp that modulates gets into reserve pit 6;
6. with pump the paper pulp that modulates is squeezed into the high-order stock tank of forming machine (smart amount container) 9 of paper mould unit;
7. the 3 D stereo moulding form is housed on the forming machine, and there are one deck and the corresponding to metal gauze of three-dimensional contouring in the surface of mould, and the periphery of moulding form has a press box; When press box is descending, with the stock tank of certain volume of mold periphery formation, before the blowing valve of opening device; Also will a certain amount of clear water be injected in the stock tank, slurries can be homogeneously precipitated on the gauze when guaranteeing slip casting, open dump valve slip casting 10; Paper pulp in the smart amount container 9 are all flow in the moulding form stock tank and gauze on precipitate, form wet base with three-dimensional stereo moulding, the moisture of paper pulp flows out from the bottom hole of shaping mould; In order to reduce the moisture in the wet base, in the bottom and vacuum mechanism 13 UNICOMs of shaping mould, under action of negative pressure; The moisture content of wet base finally is reduced to about 70% of gross weight, and the vacuum of vacuum mechanism is in the 0.03-0.08 MPa, the water of sucking-off; Through water separator 14, flow into pulping system and participate in circulation next time.Behind the wet blank molding with stock tank and mold separation; Use mechanical device or manual work that gauze is together taken out together with wet base; Put into the mould of forming machine, 12 moulds of finalizing the design are made up of two parts up and down, during matched moulds; The die cavity that forms three-dimensional stereo moulding between two moulds is to hold wet base, and the upper and lower of mould all is equipped with heating panel and is used for heating mould.About 140 ℃-230 ℃ of the temperature of mould, patrix links to each other with the movable slide plate of forming machine, and counterdie is installed on the workbench of forming machine; Forming machine belongs to press, uses cylinder or hydraulic cylinder to drive guide rod mould is exerted pressure, and the pressure of press acts on wet base during startup; Wet base is pushed, and every square centimeter of power that applies the 3-8 kilogram is under the acting in conjunction of temperature and pressure; Wet base attenuation, moisture is extruded and is evaporated, and forms the blank 15 of product.The moisture content of blank about about 10%;
Above-mentioned mould is the mould of 3-D solid structure; The inner-cavity structure of this mould has quantitative three dimensions; When slip casting, have quantitative geometric volume or have the quantitative geometric volume that the 3D shape plastotype that can satisfy product requires, in the gap of convexconcave part, hold paper pulp behind the matched moulds;
Above-mentioned 3 D stereo mould is made up of (1) moulding form, (2) thermocompression forming mould, two parts, is installed on the cover paper mould equipment;
8. the blank that comes out of finalizing the design can be deposited separately, also can directly be sent to the shaping unit and cut edge 16, and the shaping process is: blank 15 is placed on the shaping mould; The top of shaping mould is installed in shaping press guide rod bottom, and the bottom of mould is installed on the shaping support, and mold periphery is equipped with cutlery; The positioner of 3 D stereo is housed in the middle of the mould; When startup press guide rod is descending, drive the blade of mold periphery, with the edge excision of blank 15;
9. just can pack through after the assay was approved through the 3 D stereo paper mould decorative panel of shaping and dispatch from the factory.
Embodiment 3
The manufacturing approach of 3 D stereo paper mould decorative panel is achieved through following technical proposals, and this method has following steps:
1. use general paper mould equipment: this equipment comprises the equipment that the slurry method is produced or slip casting method is produced that drags for;
2. use mould: use copper material, stainless steel material or aluminum alloy materials, according to the designing requirement of product, make the mould of paper mould equipment, this dies cavity structure is a 3-D solid structure;
3. select the paper pulp raw material 1 of the papermaking softwood pulp 50 weight % that remove sand grains, earth, bamboo pulp 20 weight %, bagasse pulp 30 weight % for use; This paper pulp raw material is joined in the pulper 2; Add the pH value and be 7 water or tap water, deionized water 4, the water slurry ratio is 8: 1, and paper pulp is pulverized; And making this paper pulp fiber length between the 1-8 millimeter, the French chalk that adds paper pulp total amount 20% is as filler 7.
4. pulverized paper pulp gets into joins stock tank 5; Add the pH value therein once more and be 7 water or tap water or deionized water 4, to the water slurry ratio be 100: 1-100: 0.7, pulp density is controlled at dry pulp weight counts 0.7 weight %; Add auxiliary agent 8 (fire retardant, waterproof agent, sizing agent); The addition of waterproof agent (alkyl ketene dimer) is 3 weight % of dry pulp gross weight, and the addition of sizing agent (acrylic acid ester sizing agent) is 1 weight % of dry pulp gross weight; Add filler 8 French chalk, talcous granularity is 300 orders, adds polyacrylamide as retention agent, and addition is 1% of a paper pulp weight, adds French chalk modifier, is 1% of paper pulp weight;
5. the paper pulp that modulates gets into reserve pit 6;
6. with pump the paper pulp that modulates is squeezed into the high-order stock tank of forming machine (smart amount container) 9 of paper mould unit;
7. the 3 D stereo moulding form is housed on the forming machine, and there are one deck and the corresponding to metal gauze of three-dimensional contouring in the surface of mould, and the periphery of moulding form has a press box; When press box is descending, with the stock tank of certain volume of mold periphery formation, before the blowing valve of opening device; Also will a certain amount of clear water be injected in the stock tank, slurries can be homogeneously precipitated on the gauze when guaranteeing slip casting, open dump valve slip casting 10; Paper pulp in the smart amount container 9 are all flow in the moulding form stock tank and gauze on precipitate, form wet base with three-dimensional stereo moulding, the moisture of paper pulp flows out from the bottom hole of shaping mould; In order to reduce the moisture in the wet base, in the bottom and vacuum mechanism 13 UNICOMs of shaping mould, under action of negative pressure; The moisture content of wet base finally is reduced to about 70% of gross weight, and the vacuum of vacuum mechanism is in the 0.03-0.08 MPa, the water of sucking-off; Through water separator 14, flow into pulping system and participate in circulation next time.Behind the wet blank molding with stock tank and mold separation; Use mechanical device or manual work that gauze is together taken out together with wet base; Put into the mould of forming machine, 12 moulds of finalizing the design are made up of two parts up and down, during matched moulds; The die cavity that forms three-dimensional stereo moulding between two moulds is to hold wet base, and the upper and lower of mould all is equipped with heating panel and is used for heating mould.About 140 ℃-230 ℃ of the temperature of mould, patrix links to each other with the movable slide plate of forming machine, and counterdie is installed on the workbench of forming machine; Forming machine belongs to press, uses cylinder or hydraulic cylinder to drive guide rod mould is exerted pressure, and the pressure of press acts on wet base during startup; Wet base is pushed, and every square centimeter of power that applies the 3-8 kilogram is under the acting in conjunction of temperature and pressure; Wet base attenuation, moisture is extruded and is evaporated, and forms the blank 15 of product.The moisture content of blank about about 10%;
Above-mentioned mould is the mould of 3-D solid structure; The inner-cavity structure of this mould has quantitative three dimensions; When slip casting, have quantitative geometric volume or have the quantitative geometric volume that the 3D shape plastotype that can satisfy product requires, in the gap of convexconcave part, hold paper pulp behind the matched moulds;
Above-mentioned 3 D stereo mould is made up of (1) moulding form, (2) thermocompression forming mould, two parts, is installed on the cover paper mould equipment;
8. the blank that comes out of finalizing the design can be deposited separately, also can directly be sent to the shaping unit and cut edge 16, and the shaping process is: blank 15 is placed on the shaping mould; The top of shaping mould is installed in shaping press guide rod bottom, and the bottom of mould is installed on the shaping support, and mold periphery is equipped with cutlery; The positioner of 3 D stereo is housed in the middle of the mould; When startup press guide rod is descending, drive the blade of mold periphery, with the edge excision of blank 15;
9. just can pack through after the assay was approved through the 3 D stereo paper mould decorative panel of shaping and dispatch from the factory.
Embodiment 4
The manufacturing approach of 3 D stereo paper mould decorative panel is achieved through following technical proposals, and this method has following steps:
1. use general paper mould equipment: this equipment comprises the equipment that the slurry method is produced or slip casting method is produced that drags for;
2. use mould: use copper material, stainless steel material or aluminum alloy materials, according to the designing requirement of product, make the mould of paper mould equipment, this dies cavity structure is a 3-D solid structure;
3. select the paper pulp raw material 1 of the papermaking softwood pulp 50 weight % that remove sand grains, earth, bamboo pulp 20 weight %, bagasse pulp 30 weight % for use; This paper pulp raw material is joined in the pulper 2; Add the pH value and be 7 water or tap water, deionized water 4, the water slurry ratio is 8: 1, and paper pulp is pulverized; And making this paper pulp fiber length between the 1-8 millimeter, the magnesium hydroxide that adds paper pulp total amount 20% substitutes solid packing 7 as fire retardant.
4. pulverized paper pulp gets into joins stock tank 5; Add the pH value therein once more and be 7 water or tap water or deionized water 4, to the water slurry ratio be 100: 1-100: 0.7, pulp density is controlled at dry pulp weight counts 0.7 weight %; Add auxiliary agent 8 (fire retardant, waterproof agent, sizing agent); The addition of waterproof agent (alkyl ketene dimer) is 3 weight % of dry pulp gross weight, and the addition of sizing agent (acrylic acid ester sizing agent) is 1 weight % of dry pulp gross weight, adds polyacrylamide as retention agent, and addition is 1% of a paper pulp weight;
5. the paper pulp that modulates gets into reserve pit 6;
6. with pump the paper pulp that modulates is squeezed into the high-order stock tank of forming machine (smart amount container) 9 of paper mould unit;
7. the 3 D stereo moulding form is housed on the forming machine, and there are one deck and the corresponding to metal gauze of three-dimensional contouring in the surface of mould, and the periphery of moulding form has a press box; When press box is descending, with the stock tank of certain volume of mold periphery formation, before the blowing valve of opening device; Also will a certain amount of clear water be injected in the stock tank, slurries can be homogeneously precipitated on the gauze when guaranteeing slip casting, open dump valve slip casting 10; Paper pulp in the smart amount container 9 are all flow in the moulding form stock tank and gauze on precipitate, form wet base with three-dimensional stereo moulding, the moisture of paper pulp flows out from the bottom hole of shaping mould; In order to reduce the moisture in the wet base, in the bottom and vacuum mechanism 13 UNICOMs of shaping mould, under action of negative pressure; The moisture content of wet base finally is reduced to about 70% of gross weight, and the vacuum of vacuum mechanism is in the 0.03-0.08 MPa, the water of sucking-off; Through water separator 14, flow into pulping system and participate in circulation next time.Behind the wet blank molding with stock tank and mold separation; Use mechanical device or manual work that gauze is together taken out together with wet base; Put into the mould of forming machine, 12 moulds of finalizing the design are made up of two parts up and down, during matched moulds; The die cavity that forms three-dimensional stereo moulding between two moulds is to hold wet base, and the upper and lower of mould all is equipped with heating panel and is used for heating mould.About 140 ℃-230 ℃ of the temperature of mould, patrix links to each other with the movable slide plate of forming machine, and counterdie is installed on the workbench of forming machine; Forming machine belongs to press, uses cylinder or hydraulic cylinder to drive guide rod mould is exerted pressure, and the pressure of press acts on wet base during startup; Wet base is pushed, and every square centimeter of power that applies the 3-8 kilogram is under the acting in conjunction of temperature and pressure; Wet base attenuation, moisture is extruded and is evaporated, and forms the blank 15 of product.The moisture content of blank about about 10%;
Above-mentioned mould is the mould of 3-D solid structure; The inner-cavity structure of this mould has quantitative three dimensions; When slip casting, have quantitative geometric volume or have the quantitative geometric volume that the 3D shape plastotype that can satisfy product requires, in the gap of convexconcave part, hold paper pulp behind the matched moulds;
Above-mentioned 3 D stereo mould is made up of (1) moulding form, (2) thermocompression forming mould, two parts, is installed on the cover paper mould equipment;
8. the blank that comes out of finalizing the design can be deposited separately, also can directly be sent to the shaping unit and cut edge 16, and the shaping process is: blank 15 is placed on the shaping mould; The top of shaping mould is installed in shaping press guide rod bottom, and the bottom of mould is installed on the shaping support, and mold periphery is equipped with cutlery; The positioner of 3 D stereo is housed in the middle of the mould; When startup press guide rod is descending, drive the blade of mold periphery, with the edge excision of blank 15;
9. just can pack through after the assay was approved through the 3 D stereo paper mould decorative panel of shaping and dispatch from the factory.
Embodiment 5
As shown in Figure 5, a kind of 3 D stereo paper mould decorative panel, it is the planar section 22 by 3 D stereo paper mould decorative panel; The bossing 23 that is higher than the plane; The recess 24 of 3 D stereo paper mould decorative panel constitutes; This 3 D stereo paper mould decorative panel is the wallpaper that has three-dimensional shape and have the shape of convex-concave with the method manufacturing of paper mould;
And have a following characteristic:
1. have plank frame, this 3 D stereo paper mould decorative panel be monomer or individual, through with a plurality of same specifications, with the splicing of the monomer of pattern, combination, arrange the 3 D stereo paper mould decorative panel that forms multi-color;
2. 3 D stereo paper mould decorative panel by the paper making pulp raw material is: paper making pulp or in paper making pulp, add the paper making pulp raw material that solid packing and auxiliary agent are formed, or the paper making pulp raw material of two or more different cultivars paper pulp mix and match composition; Above-mentioned paper making pulp raw material comprises one or more formations in the natural fiber paper pulp of softwood pulp, hardwood pulp, bamboo pulp, reed pulp, cotton pulp or straw pulp.
3. above-mentioned 3 D stereo paper mould decorative panel is the true qualities whiteness that its surface has paper; Also can realize through the adjustment whiteness; The surface of 3 D stereo paper mould decorative panel can brushing paint; Comprise water paint, oil paint, functional paint; Also can carry out the coating plastic film, comprise that unlike material (like polyvinyl chloride pvc, polyvinyl pe, polyurethane pu, Biaxially oriented polypropylene bopp, polyester pet etc., the thin-film material that is ductile) different texture (inferior light, sanding, Gao Guang, stamp) different-thickness (0.05-0.5mm) makes the 3 D stereo decorative effect more outstanding on its surface.Overlay film can the single face overlay film, also can two-sided all overlay films.
4. 3 D stereo paper mould decorative panel has multiple pattern, comprises different appearance pattern, different specifications, various colors, and this pattern is that the pattern of stickup separately or the wallpaper of different pattern make up the pattern of pasting;
The height of the three-dimensional projection of 3 D stereo paper mould decorative panel at 5mm between the 150mm; The ratio of three-dimensional height and paper substrate thickness was at 1: 4---and between 1: 300, proportion is between 0.7-1.5
6. 3 D stereo paper mould decorative panel is arbitrarily cutting, and splicing is the 3 D stereo paper mould decorative panel that can change monomer (monolithic);
7. above-mentioned 3 D stereo paper mould decorative panel is a kind of shape or more than one shape in rectangle, parallelogram, triangle, hexagon, the geometry such as trapezoidal.
Embodiment 6
3 D stereo paper mould decorative panel in decoration, as the interior wall in bedroom, ceiling decorate, the decoration of wall, the interior wall in parlor, ceiling are decorated, the decoration of wall, public arena are decorated, office decorates, the interior wall of hotel's used by hotels and restaurants by, ceiling are decorated, wall is decorated can extensive use.
Claims (4)
1. 3 D stereo paper mould decorative panel, it is characterized in that: be made up of planar section, bossing, recess, the height of the three-dimensional projection of 3 D stereo paper mould decorative panel is higher than planar section 5-150mm.
2. 3 D stereo paper mould decorative panel, it is characterized in that: it can cut randomly, splice.
3. make claim 1 or 2 described 3 D stereo paper mould decorative panels for one kind; It comprises modeling, removal of impurities, joins common process such as slurry, is characterised in that: behind die and the punch matched moulds, between moulding; Form the die cavity of a determining deviation, with the wet base of three-dimensional stereo moulding paper pulp that holds; The upper and lower of mould all is equipped with heater, and the temperature range of heating is at 140 ℃--and between 230 ℃, the heating for fixing shape time is between 3-6 minute; The pressure of forming machine is at 3-8kg/cm
2
4. claim 1 or 2 described 3 D stereo paper mould decorative panels are used for the indoor wall decoration, ceiling is decorated or the purposes of other background wall decoration.
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| CN201210199889.1A CN102691388B (en) | 2012-06-18 | 2012-06-18 | 3 D stereo paper mould decorative panel and manufacture method thereof and application |
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| CN201210199889.1A CN102691388B (en) | 2012-06-18 | 2012-06-18 | 3 D stereo paper mould decorative panel and manufacture method thereof and application |
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| CN105908578A (en) * | 2016-05-03 | 2016-08-31 | 东莞当纳利印刷有限公司 | Production method of paper pulp molded product |
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