CN102225576A - Fully automatic stone paper production process - Google Patents

Abstract

The invention relates to a full-automatic stone paper making production process. The production process sequentially comprises the following steps: (1) stone powder is prepared from 75-80% of stone, wherein the content of calcium carbonate in the stone is more than 93%; (2) screening the stone powder to the requirements of 1000 meshes and 1500 meshes by a filtering and screening device; (3) carrying out modification treatment on the filtered stone powder by a drying and stirring device; (4) mixing and stirring the modified stone powder, plastic PP or PE or PHBV with the proportion of 15-20% and auxiliary agent with the proportion of 4.5-5.5%, automatically feeding the mixture into a granulator funnel after stirring, and automatically starting a banburying double screw to extrude and cut granules into a charging barrel by the granulator; (5) automatically conveying the manufactured particles into a hopper of an extruder, extruding the prepared colloidal fluid to a wide film head by the extruder through single-screw high-speed rotation of an internal mixing device, extruding a sheet, cooling a roller to a required temperature by cooling circulating liquid of a three-roller calendering cold cutting tower, and then stretching the roller by a casting machine to form stone paper with a required thickness; (6) the stone paper automatically enters the coating equipment for automatic double-sided coating.

Description

Fully automatic stone paper production process

Technical field:

The invention relates to a papermaking production process, in particular to an automatic stone papermaking production process.

Background technique:

Most of the existing traditional papermaking methods are produced by wet method, through a series of complex processes such as physical and chemical treatment of pulp, which consume a lot of resources such as water, electricity, coal, plants, manpower, etc., high cost, many processes, and heavy pollution , destroying the ecological environment, difficult to control, and does not meet the current low-carbon environmental protection requirements, so it cannot meet the needs of the market. For this, so the applicant designs the present invention.

Invention content:

The technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings and provide a fully automatic papermaking process using stones as raw materials.

For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the production process steps are as follows:

(1) make stone powder with the stone of ratio 75%-80%, wherein, the calcium carbonate content of stone is more than 93%;

(2) The stone powder is screened to the requirement of 1000-1500 mesh through a filter screening device;

(3) the stone powder of filtering is carried out modification treatment through drying stirring device;

(4) Mix the modified stone powder with plastic PP or PE or PHBV with a ratio of 15%-20% and additives with a ratio of 4.5%-5.5%, and then automatically send it to the funnel of the granulator for granulation The machine automatically starts the mixing twin-screw to extrude and cut pellets to the charging barrel;

(5) Automatically convey the prepared granules into the funnel of the extruder, and the extruder passes through the high-speed rotation of the single screw of the banburying device to extrude the colloidal fluid to the wide film head and then extrude the sheet, which is calendered by three rollers The cooling circulating fluid of the cooling tower cools the roller to the required temperature and then stretches it through the casting machine to form stone paper of the required thickness;

(6) The stone paper will automatically enter the coating equipment for automatic double-sided coating.

In the above-mentioned technical scheme, said step (1): crush the stones with a ratio of 75%-80% into small stones of 3-5 cm, and then send the small stones into the three-ring central micro-powder machine to grind them into stone powder, wherein the stones The calcium carbonate content of the powder is more than 93%, and the fineness of grinding and screening is required to reach 1000-1500 mesh.

In the above technical solution, the step (1): calcining stones with a proportion of 75%-80%, and then using grinding equipment to grind them into stone powder, wherein the calcium carbonate content of the stones is more than 93%.

In the above technical solution, the step (5): automatically transport the prepared pellets into the funnel of the extruder, and extrude the colloidal fluid made by the extruder through the high-speed rotation of the single screw of the banburying device to the wide film head and then Extrude the sheet, pass through the three-roll calendering cold cutting tower cooling circulation fluid to cool the roller to the required temperature and then stretch it through the casting machine to form the stone paper of the required thickness; then the stone paper is automatically cut and then automatically collected Roll, automatic recycling of trim.

In the above technical solution, the stone is one or more of calcite, limestone and marble.

in,

PP is polypropylene, which is another excellent resin variety developed after nylon. It is a linear polymer with high density, no side chains, and high crystallinity, and has excellent comprehensive properties.

PE is polyethylene, it is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -70 ~ -100 ° C), good chemical stability, and can withstand most acid and alkali erosion (not Resistance to acids with oxidizing properties), insoluble in common solvents at room temperature, low water absorption, and excellent electrical insulation properties.

PHBV is a new biopolymer 3-hydroxybutyric acid-co-3-hydroxyvaleric acid copolymer, which is a kind of biological polyester, which is produced by bacteria, can be digested by bacteria, and can be completely decomposed into Carbon dioxide, water and biomass.

The invention has the advantages of simple production process, low production cost, high return on investment, saving energy, protecting natural resources and improving the environment.

Description of drawings:

Fig. 1 is the technological process schematic diagram of embodiment one of the present invention;

Fig. 2 is a schematic process flow diagram of Embodiment 2 of the present invention.

Detailed ways:

Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:

Embodiment one

As shown in Figure 1, the process flow of the present invention in this embodiment: first crush the calcite into small calcite, then pulverize the small calcite, then filter and screen the powder, then modify the filtered powder, and then make the powder Then the pellets are extruded (calendered, stretched, cast) into stone paper, and then the stone paper is automatically cut and then automatically rewound, the edge material is automatically recycled, and then the stone paper is coated, and finally the finished product storage.

The concrete steps of the present invention of the present embodiment are as follows:

(1) First crush 78 kg of calcite into small calcite of 3-5 cm, then send the crushed small calcite to the three-ring central micro-powder machine through the conveying device and grind it into powder, wherein the calcium carbonate content of calcite is 93% above;

(2) The powder is filtered and screened to meet the requirements of 1000-1500 mesh;

(3) modifying the filtered powder through a drying and stirring device;

(4) Mix the modified powder with 17 kg of plastic PP (PP requires softening treatment) and 5 kg of additives. After stirring, it will be automatically sent to the funnel of the granulator, and the granulator will automatically start the twin-screw mixer. Extrude the pellets to the charging barrel;

(4) Automatically convey the prepared granules into the funnel of the extruder, and the extruder will extrude the colloidal fluid made into a 2.4-meter-wide film head through the high-speed rotation of the single-screw of the extruder, and then extrude the sheet. The cooling circulation fluid of the three-roll calendering cold cutting tower cools the rollers to the required temperature and then stretches them through the casting machine to form stone paper of the required thickness; then the stone paper is automatically cut and then automatically rewound, and the edge material is processed Automatic recycling;

(6) The stone paper will automatically enter the coating equipment for automatic double-sided coating, and finally the finished product will be put into storage.

Embodiment two

As shown in Figure 2, the process flow of the present invention in this embodiment: first limestone is calcined, then ground into powder by milling equipment, then the powder is filtered and screened, then the filtered powder is modified, and then the powder is Granulating, then extruding (calendering, stretching, casting) the granules into stone paper, then automatically cutting the stone paper, then automatically rewinding, automatically recycling the edge material, and then coating the stone paper, and finally Product storage.

The concrete steps of the present invention of the present embodiment are as follows:

(1) Calcining 75 kilograms of limestone, then using milling equipment to grind into powder, wherein the calcium carbonate content of limestone is more than 90%;

(2) The powder is filtered and screened to meet the requirements of 1000-1500 mesh;

(3) modifying the filtered powder through a drying and stirring device;

(4) Mix and stir the modified powder with 20 kg of plastic PE and 5 kg of additives. After stirring, it is automatically sent into the funnel of the granulator. Barrel;

(5) Automatically convey the prepared granules into the funnel of the extruder, and the extruder will extrude the colloidal fluid made into a 2.4-meter-wide film head through the high-speed rotation of the single-screw of the extruder, and then extrude the sheet. The cooling circulation fluid of the three-roll calendering cold cutting tower cools the rollers to the required temperature and then stretches them through the casting machine to form stone paper of the required thickness; then the stone paper is automatically cut and then automatically rewound, and the edge material is processed Automatic recovery;

(6) The stone paper will automatically enter the coating equipment for automatic double-sided coating, and finally the finished product will be put into storage.

The stone used in the first embodiment above is calcite, and the stone used in the second embodiment is limestone. If the requirements for the produced stone paper are not high, any stone can be selected.

Of course, the above descriptions are only a few examples of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the structure, features and principles described in the patent scope of the present invention shall include Within the patent scope of the present invention.

Claims (5)

1. A full-automatic stone papermaking production process is characterized in that: the production process steps are successively: (1) make stone powder with the stone of ratio 75%-80%, wherein, the calcium carbonate content of stone is more than 93%; (2) The stone powder is screened to the requirement of 1000-1500 mesh through a filter screening device; (3) The stone powder of filtering is carried out modification treatment through drying stirring device; (4) Mix the modified stone powder with plastic PP or PE or PHBV with a ratio of 15%-20% and additives with a ratio of 4.5%-5.5%, and then automatically send it to the funnel of the granulator for granulation The machine automatically starts the mixing twin-screw to extrude and cut pellets to the charging barrel; (5) Automatically convey the prepared granules into the funnel of the extruder, and the extruder passes through the high-speed rotation of the single screw of the banburying device to extrude the colloidal fluid to the wide film head and then extrude the sheet, which is calendered by three rollers The cooling circulating fluid of the cooling tower cools the roller to the required temperature and then stretches it through the casting machine to form stone paper of the required thickness; (6) The stone paper will automatically enter the coating equipment for automatic double-sided coating. 2. The fully automatic stone papermaking process according to claim 1, characterized in that: said step (1): breaking the stones with a ratio of 75%-80% into small stones of 3-5 cm, and then crushing the small stones Send it to the three-ring central micro-powder machine to grind it into stone powder, wherein the calcium carbonate content of the stone is more than 93%, and the fineness of grinding and screening is required to reach 1000-1500 mesh. 3. The full-automatic stone papermaking process according to claim 1, characterized in that: said step (1): calcining stones with a ratio of 75%-80%, and then using grinding equipment to grind them into stone powder, Among them, the calcium carbonate content of stone is more than 93%. 4. The full-automatic stone papermaking production process according to any one of claims 1-3, characterized in that: said step (5): automatically transport the prepared granules into the funnel of the extruder, and the extruder passes through The colloidal fluid produced by the high-speed rotation of the single screw in the mixing device is extruded to the wide film head and then extruded into the sheet. After passing through the three-roll calendering cold-cutting tower, the cooling circulating fluid cools the rollers to the required temperature and then draws them through the casting machine. Stretching to form stone paper of required thickness; then automatically cut the stone paper and then automatically rewind, and automatically recycle the edge material. 5. The fully automatic stone papermaking process according to claim 4, characterized in that: said stone is one or more of calcite, limestone and marble.

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