CN102154949B - Manufacturing method of recyclable stone paper - Google Patents

Abstract

A manufacturing method of recyclable and reusable stone paper comprises the following steps that 60 to 85 weight percent of natural inorganic mineral powder, 15 to 40 weight percent of polypropylene and 1 to 5 weight percent of auxiliary agent are contained in the composition of the stone paper, and the manufacturing method adopts a continuous calendaring and forming mode; the composition of the paper material is not required to be processed into granular raw material master batches, and is directly fed into a calendering and papermaking device, and the calendering and papermaking device comprises a raw material automatic metering machine, an automatic mixing stirrer, a mixing and tablet press, a high-density extruder, a 5-wheel calendering forming machine and a forming and cooling forming machine. Therefore, the manufactured paper can be recycled and regenerated after being used up, only polypropylene with less components is burnt during combustion, high temperature and black smoke are not generated, the manufactured paper has no toxicity, and residues of natural inorganic mineral powder with more components are contained after combustion, so that the manufactured paper has the environmental protection characteristic of returning to the ground and natural.

Description

Manufacturing method of recyclable stone paper

technical field

The invention relates to a manufacturing method of environmentally friendly paper, in particular to a manufacturing method of recyclable stone paper.

Background technique

At present, a variety of synthetic papers have been invented in the world. Among them, the single-layer and multi-layer synthetic papers made of polypropylene as the main component material and inorganic mineral powder as the filler are all made of traditional plastic film products. Manufactured by formula; and in the process of single-layer or multi-layer co-extrusion, the forming die is made of a sheet with a straight die structure, and the two sides of the surface of the sheet are stretched longitudinally, and then the sheet is laminated or The film-coated sheet is then stretched transversely; the middle layer of the synthetic paper produced by this method has two-way stretching, while the surface layer has one-way stretching, and becomes a multi-layer synthetic paper.

If the sheet after longitudinal stretching is directly stretched horizontally again, the surface of the produced single-layer or multi-layer synthetic paper has bidirectional stretching characteristics, and although the above-mentioned synthetic paper has its advantages, it is not the same as Compared with the performance of wood pulp paper, the difference is still very large. The disadvantages of the above-mentioned synthetic paper are: poor foldability, too much difference in transverse and longitudinal tearability or no tearability... etc.; Synthetic paper made of acrylic plastic as the main material, if discarded outdoors after use, cannot be oxidized and decomposed in a short period of time in the natural environment, which cannot reduce secondary pollution; and the cost of synthetic paper made is also higher than that of wood pulp paper. many. Based on the above shortcomings, synthetic paper has not been favored by consumers.

Contents of the invention

In view of the problems in the prior art, the purpose of the present invention is to provide a method for producing recyclable stone paper, so as to solve the problem that the conventional synthetic paper made of polypropylene plastic cannot be used in a short period of time if it is discarded outdoors. Oxidative decomposition in the natural environment within a short period of time has failed to reduce secondary pollution; and the cost of synthetic paper made is also much higher than that of wood pulp paper.

The object of the present invention is to provide a kind of recyclable stone paper, the material of this stone paper comprises: 60% to 85% by weight of natural inorganic mineral powder, 15% to 40% by weight of poly Propylene and 1% to 5% by weight of additives.

The natural inorganic mineral powder selection: calcium carbonate, fly ash, calcium sulfate, barium sulfate, kaolin, mica powder, zinc oxide, dolomite powder, calcium silicate, glass fiber, hollow glass microspheres, silica powder, chalk powder, talc Powder, pigment, titanium dioxide, silicon dioxide, bentonite, clay or diatomaceous earth, or a mixture of at least two of the above materials.

The auxiliary agent includes coupling agent, dispersant, antistatic agent, solid softener, activator, accelerator, anti-aging agent, anti-scorch agent, adhesive and/or heat-resistant agent.

The coupling agent is β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane; the slip agent is N-oleyl palmitic acid amide; the antistatic agent is N,N-bis(2-hydroxyethyl ) stearamide and/or N,N-bis(2-hydroxyethyl)cocoamine.

As mentioned above, the recyclable stone paper manufacturing method, the composition of the paper material does not need to be processed into granular raw material master batches, and is directly put into the calendering papermaking device, and the calendering papermaking device includes an automatic raw material weighing machine, Automatic mixing mixer, mixing tablet press, high-density flattening machine, 5-wheel calendering machine and forming cooling and setting machine, the steps include:

The first step: the paper composition is directly fed and measured according to the required raw material ratio formula by the raw material automatic metering machine, and sent to the automatic mixing mixer;

The second step: the paper composition is continuously mixed and stirred by an automatic mixing mixer, so that the raw materials of the paper composition are evenly mixed;

The third step: directly transport the mixed paper composition to the mixed tablet press machine, and use the mixed tablet method to extend the paper composition in two directions and knead evenly, so that the paper composition forms a continuous paper sheet;

Step 4: Send the evenly kneaded paper to a high-density squeezer, mix and flatten the paper again to make it moderate in hardness and tension;

The fifth step: Use the 5-wheel calender to roll the paper in reverse and shape it, and at the same time extend the paper horizontally and vertically;

The sixth step: use the forming cooling and setting machine to press the paper continuously, and at the same time extend the paper horizontally and vertically in both directions and adjust and control the thickness of the paper, and it is completed.

The calendering papermaking device may include an automatic paper roll machine and a paper cutter, so that the paper finished in the sixth step is rolled into a paper roll by the automatic paper roll machine, and then the paper finished product is cut into desired shapes by the paper cutter. sized flat paper.

The 5-wheel calender forming machine in the fifth step uses high-temperature calendering to adjust the temperature according to the characteristics of the paper composition formula, so that the paper composition materials are melted, mixed, and bidirectionally stretched.

In the sixth step, the forming cooling and setting machine can adjust the calendering time according to the required paper thickness.

The surface of the finished paper in the sixth step is coated with an oil-based coating liquid.

The surface of the finished paper in the sixth step can be coated with water-based coating liquid, and the uncoated paper is discharged to the automatic leveling machine through the double-sided coating machine to be traction and leveled and to perform corona treatment on the surface of the paper , After the surface of both sides of the paper is treated with high-voltage discharge, countless tiny holes will be formed on the surface of the paper to improve the adhesion when coating on the surface of the paper; the paper is pulled to the front coating machine for the first coating; The paper is then drawn to a dry oven to dry the surface of the paper for reverse coating; through the reverse coating machine, multiple nozzles are used to control the coating amount of the coating liquid, and the paper is reverse coated; the paper is then drawn to the dry The oven dries the coated surface, so that the paper can dry the coated surface quickly under heating, and achieve the effect that the surface of the paper is smooth.

The beneficial effects of the present invention are: the manufactured stone paper can be recycled and regenerated after being used up, and only polypropylene with less ingredients will be burned when burned, without high temperature and black smoke and non-toxic gas, and contains more ingredients after burning The remnants of natural inorganic mineral powder have environmental protection characteristics that can return to the earth and nature.

Description of drawings

Fig. 1 is a schematic diagram of a calendering papermaking device of the present invention.

Fig. 2 is a schematic diagram of an automatic weighing machine for raw materials of the present invention.

Fig. 3 is a schematic diagram of the automatic mixing mixer of the present invention.

Fig. 4 is a schematic diagram of the hybrid tablet press of the present invention.

Fig. 5 is a schematic diagram of the high-density flattening machine of the present invention.

Fig. 6 is a schematic diagram of a 5-wheel calender forming machine of the present invention.

Fig. 7 is a schematic diagram of the forming cooling setting machine of the present invention.

Fig. 8 is a schematic diagram of the automatic paper winding machine of the present invention.

Fig. 9 is a schematic diagram of the paper cutter of the present invention.

Fig. 10 is a schematic diagram of a double-sided coating machine of the present invention.

Fig. 11 is a schematic diagram of the automatic leveling machine of the present invention.

Fig. 12 is a schematic diagram of the front coating machine of the present invention.

Fig. 13 is a schematic diagram of the dry oven of the present invention.

Fig. 14 is a schematic diagram of the reverse coating machine of the present invention.

Fig. 15 is a schematic diagram of the paper winding machine of the present invention.

[Description of main component symbols]

10. Calender paper making device

11. Raw material automatic weighing machine 12. Automatic mixing mixer

13. Hybrid Tablet Press 14. High Density Extrusion Machine

15. 5-wheel calender forming machine 16. Forming cooling and setting machine

17. Automatic paper winding machine 18. Paper cutting machine

20. Double-sided coating machine

21. Automatic leveling machine 22. Front coating machine

23. Dry oven 24. Reverse coating machine

25. Roller

Detailed ways

In order to make it easier and simpler to understand the other features and advantages of the present invention and the effects achieved, the present invention will be described in detail with the accompanying drawings, and the following embodiments will further describe the present invention in detail. invention, but not to limit the scope of the invention in any way.

Please refer to shown in Figures 1 to 9, the present invention discloses a method for making recyclable stone paper, wherein the composition of the paper includes 60% to 85% by weight of natural inorganic mineral powder (such as calcium carbonate (including light Calcium carbonate, heavy calcium carbonate, colloidal calcium carbonate), fly ash, calcium sulfate, barium sulfate, kaolin, mica powder, zinc oxide, dolomite powder, calcium silicate, glass fiber, hollow glass microspheres, silica powder , chalk, talc, pigments, titanium dioxide, silicon dioxide, bentonite, clay, diatomaceous earth and mixtures thereof (calcined or uncalcined) as main raw materials; 15% to 40% by weight of polypropylene (Polypropylene, be called for short PP); 1% to 5% weight assistant. And polypropylene can comprise the combination of high-density polypropylene, low-density polypropylene and low-density polyethylene; Assistant can include coupling agent, slip agent (dispersant ), antistatic agent, solid softener, activator, accelerator, anti-aging agent, anti-scorch agent, adhesive, heat-resistant agent... and other raw materials; the coupling agent can be β-(3,4-epoxy ring Hexyl) ethyl trimethoxysilane; slip agent can be N-oleyl palmitic acid amide; antistatic agent can be N, N-bis (2-hydroxyethyl) stearamide and N, N-bis (2- hydroxyethyl) cocoamine.

The composition of the aforementioned stone paper does not need to be processed into granular raw material masterbatches, but can be directly put into a calendering papermaking device 10, which includes an automatic raw material metering machine 11, an automatic mixing mixer 12, a mixing tabletting machine 13, High-density flattening machine 14, 5-wheel calender forming machine 15, forming cooling and setting machine 16, automatic paper winding machine 17, paper cutting machine 18, the steps include:

The first step: the paper composition is directly fed and measured by the automatic raw material weighing machine 11 according to the required raw material ratio formula, and sent to the automatic mixing mixer 12 .

The second step: the paper composition is continuously mixed and stirred by the automatic mixer 12, so that the raw materials of the paper composition are uniformly mixed.

The third step: the mixed paper composition is directly conveyed to the mixing tabletting machine 13, and the paper composition is stretched bidirectionally and kneaded evenly by the mixing tabletting method, so that the paper composition is formed into a continuous paper sheet.

Step 4: Transport the evenly kneaded paper to the high-density squeezer 14, mix and flatten the paper again to make it moderate in hardness and tension.

The fifth step: use the 5-wheel calender 15 to reversely roll the paper to shape it, and at the same time extend the paper horizontally and vertically.

The sixth step: use the forming cooling and setting machine 16 to continuously press the paper, and at the same time extend the paper horizontally and vertically in both directions and adjust and control the thickness of the paper, and the process is completed.

Step 7: The finished paper can be rolled into a paper roll by using the automatic paper rolling machine 17 .

Eighth step: the finished paper can be cut into flat paper of required size by using the paper cutter 18 .

Thus, the composition of the paper of the present invention comprises 60% to 85% by weight of natural inorganic mineral powder, 15% to 40% by weight of polypropylene (PP) and 1% to 5% by weight of additives to produce paper, according to The different components of the additives can be divided into biodegradable materials, which can be decomposed into carbon dioxide and water with the help of microorganisms in the environment. The other is a photodegradable material, which uses ultraviolet rays in sunlight to break the main chain of the macromolecule of the decomposed material and decompose it. The third is oxidative decomposable materials, which are decomposed by forming oxides through the interaction of materials and oxygen. Make the used paper recyclable and regenerate, even when burning, it only burns polypropylene with less ingredients, does not produce high temperature and black smoke, and is non-toxic. After burning, the residue of natural inorganic mineral powder with more ingredients can be Return to the earth, return to nature, do not produce poisonous gas or pollute water sources, and can fully meet environmental protection requirements; in addition, the composition of the stone paper of the present invention can be directly and automatically fed and measured according to the formula of raw material ratios, without the need for granulation procedures, which can reduce The cost required to mix and manufacture raw material masterbatches.

The 5-wheel calender forming machine 15 in the aforementioned fifth step uses high-temperature calendering to adjust the temperature according to the characteristics of the composition formula of the stone paper, so that the composition material of the stone paper is melted, mixed, and bidirectionally extended; the sixth step is formed by cooling The sizing machine 16 can adjust the calendering time according to the required paper thickness and product characteristics; and in the previous steps, if the finished stone paper product needs a paper roll type, the eighth step can be omitted.

And one embodiment of the manufacturing method of recyclable stone paper of the present invention, wherein the composition of paper can be 65% by weight of natural inorganic mineral powder (wherein calcium carbonate accounts for 32% by weight, titanium dioxide accounts for 7% by weight, diatomaceous earth 26% by weight); 33% by weight of polypropylene and 2% by weight of additives (0.8% by weight of β-(3,4-epoxycyclohexyl) ethyl trimethoxysilane, 0.4% by weight of N-oleyl palm acid amide and 0.8% by weight N,N-bis(2-hydroxyethyl)stearamide). The ingredients of the above composition add up to 100% by weight. After mixing, extruding and kneading, they are put into the calendering papermaking device 10, and the production adjustment is carried out according to the requirements of product thickness to produce recyclable paper of 0.1 mm.

And another embodiment of the manufacturing method of the recyclable stone paper of the present invention, wherein the composition of the paper can be 75% by weight of natural inorganic mineral powder (wherein calcium carbonate accounts for 40% by weight, titanium dioxide accounts for 4% by weight, diatom Soil accounted for 25% by weight, white clay accounted for 6% by weight); 21% by weight polypropylene and 4% by weight additives (1.5% by weight β-(3,4-epoxycyclohexyl) ethyltrimethoxysilane, 1% by weight % N-oleyl palmitic acid amide and 1.5% by weight N,N-bis(2-hydroxyethyl)stearamide). The above material components add up to 100% by weight. After mixing, extruding and kneading, they are put into the calendering papermaking device 10. According to the requirements of product thickness, the production is adjusted to produce 0.2mm recyclable paper.

And another embodiment of the manufacturing method of the recyclable stone paper of the present invention, wherein the composition of the paper can be 85% by weight of natural inorganic mineral powder (wherein calcium carbonate accounts for 50% by weight, titanium dioxide accounts for 8% by weight, diatoms Soil accounted for 24% by weight, talcum powder accounted for 3% by weight); 10% by weight of polypropylene and 5% by weight of additives (2.2% by weight of β-(3,4-epoxycyclohexyl) ethyltrimethoxysilane, 0.6 % by weight of N-oleyl palmitic acid amide and 2.2% by weight of N,N-bis(2-hydroxyethyl)stearamide). The above material components add up to 100% by weight. After mixing, extruding and kneading, they are put into calendering manufacturing machinery, and the production adjustment is carried out according to the requirements of product thickness to produce 0.7mm recyclable paper.

Furthermore, the recyclable stone paper manufacturing method of the present invention can be processed and manufactured into calendars, calendars, hanging pictures, traffic maps, notebooks, manuals, business logs, stationery, etc. according to the thickness, characteristics and application range of the paper. Books, trademarks, posters, tags, various handbags, wrapping paper, decorative surface materials, wallpapers, surface lamination of woven bags, release paper, heat-sealed packaging bags, self-adhesive label paper, laminating surface materials, maps, self-adhesive Adhesive labels, plastic floor tile surface bonding materials, shopping bags, various handbags, wallpapers, newspapers, loose-leaf paper, notebooks, books, desk calendars, envelopes, reflective paper, manuals, teaching materials, festival greeting cards, three-dimensional greeting cards, playing cards, Business cards, name tags, elevator cards, pictures, book covers, various packaging boxes, shoe boxes, cigarette boxes, tea boxes, placemats, curtains, hang tags, food packaging boxes, frozen food trays, disposable tableware, lunch boxes, carts Use sunshade curtains, art lighting, supermarket freezer cards, 3D three-dimensional paper sculptures, coupons, scorecards, product catalogs, coasters, plastic floor tiles, large-scale advertisements, and light box advertisements. Printing paper, writing paper, computer character paper and other cultural paper, as well as decorative paper, packaging paper, etc. Some papers can be used directly, while others require surface coating to make a matte or glossy surface for special purposes.

Please refer to Figs. 10 to 15 again, the surface coating of the recyclable stone paper of the present invention can use oil-based coating liquid or water-based coating liquid. And if the water-based coating liquid is used, the formula of the water-based coating liquid can be a coating composed of acrylic resin, isopropanol, polyvinyl alcohol, clay, antistatic agent, 28% ammonia water, pure water, vinyl acetate, etc. cloth liquid. The uncoated paper is discharged to the automatic leveler 21 through the double-sided coating machine 20, and the surface of the paper is corona treated by traction, so that the surface on both sides of the paper will Numerous fine pores are formed on the surface to improve the adhesive force when coating on the paper surface; the paper is pulled to the front coating machine 22 for the first coating; then the paper is pulled to the dry oven 23 to make the surface of the paper Drying is convenient for reverse coating; through the reverse coating machine 24, multiple nozzles are used to control the coating amount of the coating liquid, and the paper is reverse-coated; then the paper is pulled to the dry oven 23 to dry the coated surface, so that the paper Under heating, the coated surface can dry quickly and achieve the effect of glossy paper surface. In addition, if the coated surface of the paper needs matte treatment, the matte treatment wheel is used to pressurize the coated and dried smooth surface to become a matte surface, and then the coated paper is rolled into paper by the winder 25. roll.

To sum up, the present invention has indeed achieved the desired effect after breaking through the previous technical structure, and it cannot be easily completed by those with ordinary knowledge in the technical field according to the previous technology before the application. File an application for a patent for invention.

Claims (3)

1. a manufacture method for the stone paper of recyclable recycling, is characterized in that,

The material of this stone paper comprises: 75% to 85% natural inorganic breeze by weight, and 15% to 21% polypropylene and 4% to 5% by weight auxiliary agent by weight, wherein:

This natural inorganic breeze is selected: calcium carbonate, flyash, calcium sulfate, barium sulfate, kaolin, mica powder, zinc oxide, dolomite dust, calcium silicates, glass fibre, hollow glass micropearl, Cab-O-sil, whiting, talcum powder, pigment, titanium dioxide, silica, bentonite, carclazyte or diatomite, or the mixture of at least two kinds of above-mentioned materials;

This auxiliary agent comprises coupling agent, lubrication prescription, dispersant, antistatic additive, solid softener, activator, promoter, age resistor, antiscorching agent, adhesive and heat-resistant agent, and this coupling agent is β-(3,4-epoxy radicals cyclohexyl) ethyl trimethoxy silane; Lubrication prescription is N-oleyl palmitamide; Antistatic additive is N, two (2-ethoxy) stearmide and/or the N of N-, two (2-ethoxy) coconut amines of N-;

The composition of this paper material does not need to be processed into granular raw material master batch, directly drop into calendering papermaking apparatus, and calendering papermaking apparatus comprises that raw material automatic metering mechanism, automatic mixed stirring machine, mixed pressuring plate machine, high density squeeze flat machine, 5 and take turns calendering forming machine and moulding cooling calibrator, its step comprises:

First step: by raw material automatic metering mechanism by the composition of paper according to the direct charging of needed raw material ratio formula, metering, and deliver to automatic mixed stirring machine;

Second step: via the continuous mix and blend of automatic mixed stirring machine, the composition material of paper is on average mixed the composition of paper;

Third step: the composition of the paper mixing is delivered directly to mixed pressuring plate machine, utilizes mixed pressuring plate mode that the two-way extension of the composition of paper rubbing is average, make the composition of paper form continuous form sheet;

The 4th step: the average paper sheet delivery of rubbing to high density is squeezed to flat machine, paper is again mixed, flattened, make that its soft durometer is moderate and tension force is moderate;

The 5th step: utilize 5 take turns calendering forming machine utilize high temperature calendering by paper reverse to rolling sizing, and paper is done laterally and two-way extension longitudinally simultaneously;

The 6th step: utilize moulding cooling calibrator that paper is pressed continuously, paper is done laterally to control paper thickness with two-way extension longitudinally and adjustment simultaneously, and according to the paper sheet thickness allotment calendering time;

The surface of the paper that the 6th step completes can be coated with oiliness or water-based coating fluid, by unicoater, uncoated paper is discharged to automatic evener, with traction, flatten and paper surface is carried out to corona treatment, make paper both side surface after electrion is processed, countless fine emptying apertures can be formed on paper surface, to improve the adhesion when paper surface is coated with; Paper tractor to front coating machine is done to coating for the first time; Again by Paper tractor to dry type baking box, make its dry tack free of paper conveniently carry out reverse side application; Via reverse side coating machine, utilize plural shower nozzle to control the coating weight of coating fluid, paper is carried out to reverse side coating; Again Paper tractor to dry type baking box is dried coating surface, make paper in heating the lower surface energy rapid draing being coated with that can allow, and reach the effect that paper surface is light face.

2. the manufacture method of the stone paper of recyclable recycling as claimed in claim 1, it is characterized in that, this calendering papermaking apparatus can include an automatic paper winder and a trimmer, the paper that the 6th step is completed utilizes automatic paper winder to be rolled into after paper roll shape, and recycling trimmer cuts into paper finished product on the plane paper of required size.

3. the manufacture method of the stone paper of recyclable recycling as claimed in claim 1, is characterized in that, the characteristic according to the composite formula of paper in the 5th step is adjusted temperature, makes composition material hot melt, mixing, the two-way extension of paper.