BR102015028525A2 - IMPROVEMENTS INTRODUCED IN THE PROCESS OF PREPARING PAPER AGGLOMERATE AND COATED CARDBOARD FOR THE OBTAINMENT OF MISCELLANEOUS PRODUCTS - Google Patents

Abstract

improvements made in the process of preparing paperboard and coated board to obtain various products. These are agglomerate (ag) preparation processes (10) to obtain miscellaneous products (pd), such as pallet, boxes, crates, part separators, sound barrier, heat barrier, furniture, partition walls. environments, decorative panels, among others; characterized in that the process (10) of agglomerate (ag) is used as raw material (mp), principal, paper (p1) and / or corrugated cardboard (p2) or other types of cellulose products; said preparation process (10) comprises the following steps: a) shredding the paper (p1) and / or corrugated cardboard (p2); b) removal of all metallic material (m2) from the crushed material (m1); c) drying the crushed material (m1) in a kiln (e); d) applying the resin (30) in powder form; e) forming the plate (ch); f) both presses (p) promote the gauge of the shaped plate (c1) to the desired thickness (e) and make the resin cure (30) forming a bond between the paper particles; the minimum pressing load (p) shall be at least 50 tonnes and temperature (t) above 200 º c.

Description

"IMPROVEMENTS INTRODUCED IN · PREPARATION PROCESS

'PAPERED AND COATED PAPER'. OBTAINING MISCELLANEOUS PRODUCTS ".

TECHNICAL FIELD OF THE INVENTION

[001] The present invention deals with improvements introduced in paperboard preparation process e.g. coated cardboard to obtain various products such as pallet packaging, boxes, crates, part separators, sound barrier, thermal barrier, furniture, room dividers, decorative panels, among others, where, notably, this process Preparation of paper and cardboard agglomerate presents simplified as well, composes one. material with high mechanical strength coupled with reduced cost, as well as the complete recycling of corrugated board, paper or any product derived from cellulose. contribute to a better disposal of waste.

HISTORY OF. INVENTION

Commonly the agglomerate material is formed by a mixture of wood residues, such as dust and sawdust with the addition of glue and resin, and the mixture obtained is pressed by suitable equipment, in order to compose panels capable of composing. miscellaneous products, mainly furniture.

[003] There are currently three types of wood-based agglomerate, namely: (i) single-layer agglomerate; ii) graded density cluster, * ii!}: three-layer cluster. The agglomerate of one layer has 'virutas' of similar sizes and evenly distributed, resulting in a surface that does not allow any finishing, whereas in the graduated density agglomerate, so-called 'virutas' are very thin on the surfaces making it softer, for the reception of finishes. Already the three-layer cluster has q. core, formed by 'virutes' arranged between two outer layers of high density, high resin proportion multithinine particles, forming a very smooth surface suitable for most finishes and coatings.

[004] The aforementioned forms of agglomerates make up boards to be used in the manufacture of furniture, mainly because of their low cost. However »the furniture can only be assembled with glue and / or dowels» taking the product with little resistance.

[005] Another disadvantage of this type of wood chipboard is that it has low moisture resistance and, consequently, short durability.

[006] However, the use of wood for the production of furniture or other products such as pallets is still widely used because, as is well known, wood has mechanical resistance to external forces, contributing to the product durability.

[007] It happens that »such wooden pallets are widely used to stack and transport cargo from one territory to another» a fact that contributes to pest proliferation and, consequently, demands treatments, certificates and border controls to prevent such invasions. .

[008] Another drawback of using wooden pallets is that they become a waste that is difficult to reuse in destination countries and are therefore usually sent for incineration or landfill, which generates more. Therefore, many countries resist receiving wooden pallets. For these and other reasons, cardboard pallets have already been developed which aim to replace wooden pallets. Some advantages »It is well known that their production increases the cost of the finely produced product.» The fact that corrugated board does not have the same mechanical strength as wood makes it necessary to use an exorbitant amount. corrugated cardboard, often making the project unfeasible.

TECHNICAL STATE

[0.10] In research conducted in specialized databases, documents referring to the process of obtaining paperboard or cardboard were found, such as the rts document, PI 9501126-4 which deals with the process of obtaining paperboard agglomerate. paper and product obtained, especially of. a recycled paper, plastic and aluminum based agglomerate from industrial wastes · known as "Tetra Pak" or "Tetra Brik", which are molded, dried and pressed at the optimum temperature and pressure to make a final product with characteristics extremely efficient for use in various assemblies, such as ceilings, partitions, structures in general and others, this product stands out not only for being obtained from industrial waste, which significantly reduces its production cost, but also for revealing important acoustic and impermeability characteristics.

Our document, Pl 9902161-7 discloses process for manufacturing products with agglomerated materials which lends itself to making slabs (modular kitchens; cabinets) and other molded seat and partition types, backrests for school desks , panels limiting any kind of carved wood, etc., with figures or signs, or containers such as vases, baskets, buckets, shelves and the like. The due process includes the use of the raw material for making these objects and obtained from waste paper not reusable in other processes such as old newspapers and magazines, printing presses or other sources. cardboard packaging.or similar and any and all paper or cardboard products. This raw material will be ground or chopped (sliced) and mixed with agglomerate and glue, different for each type. material and its purpose, then pressed to take the required format. Already destined in molds and presses and after its drying, it obtains an approved material of water (humidity), termites and fire, therefore it does not suffer from any of these factors mentioned above.

[012] Another document from na. Pi 9705951-0 relates to a method for the manufacture of agglomerated type plates, obtained from recyclable starting materials, which comprises the following operating steps :; a) grinding the starting material in the following proportions: between 20: & 40% of a polymer selected from polyethylene, polypropylene, BS, high impact; between 10 and 20% of a metal selected from aluminum, copper, iron and their alloys; and between 70 and 40% paper; (b) subjecting the milled material to a drying process; disposing the milled and dried material on a horizontal flat surface in accordance with one another. uniform cover and apply uniform cold pressure; d) to the pre-pressed material in step c) applying a new hot pressure under a temperature of about 160 to 200 ° C; e) apply a new cold pressure; and f) leave to stand and cut according to end-use requirements. Further, it also refers to a plate obtained by said method which comprises respective outer layers of PET between which a compact layer of a mixture of polymer and paper is defined. metal. The method is performed with equipment comprising: a) a first hammer mill communicating with a first hopper of starting material; b) a second shell mill communicating with a second hopper for storing the minced material; c) a tubular dryer comprising an inner jacket in which hot oil circulates; d) a first cold working press with a pressure range of 2 to 10 kg / cm; e) a second hot working press at a pressure range of 8 to 20 kg / cm; f) a third cold-working press that consolidates the already formed plate, which operates at a pressure range between 20 and SO Kg / cm; g) a means for holding and cutting the finished plate.

[013] The documents cited in the above paragraphs, even though they belong to the same field.application, ie 'paper or cardboard conglomerate' do not contain either. characteristics of the object now perfected thus ensuring that the same. · patentability legal requirements.

BRIEF DESCRIPTION OF THE INVENTION

It is the object of the present invention to disclose a process which enables the production of paper and cardboard agglomerate coated to obtain various products such as pallets, boxes, crates, part separators, sound barrier, thermal barrier, furniture, wall partitions. environments, decorative panels »among others.

Said production process comprises the following steps: i) shredding the paper and / or cardboard; II) removal of metallic material; iii) drying of the crushed material; ivj application of the resin; v) sheet formation; vi) pressing.

[016] Based on the innovated process · the shredding step gives a particle size of less than or equal to the length 100 mm x, Width IG.mm.x thickness of the recycled material itself as well as the ». Resin application the amount is calculated by 10% of the total weight of the cardboard mass, in addition to the resin being applied to the trit.ura.dO'fact which promotes improved incorporation, [017.1 ' . .Paper forming step The dough is distributed between sheets of Kraft or recycled paper and the pressing of at least 50 tonnes. · Temperature above 200¾.

[0181] Another advantage lies in the fact that the agglomerate preparation process is relatively simple in manufacturing, especially when compared to the processes of materials obtained from placasse, wood. Another advantage lies in the fact that the proGessoperrriit · obtaining a sintered material .with superior mechanical strength. · The corrugated cardboard and near strength of solid wood allied to the reduced cost.

Another advantage is that the raw material used to obtain the agglomerate is wholly derived from the corrugated paper, paper or any cellulose product contributing to a better waste disposal, DESCRIPTION In addition to the present description in order to obtain a better understanding of the features of the present invention and according to a preferred practical embodiment thereof, accompanying the accompanying description is a set of drawings, in which, by way of example, although not limiting, its operation has been shown * Figure 1 is a schematic view of the steps of the now-innovative agglomerate preparation process, Figure 2 shows a perspective view of the plate obtained from the agglomerate preparation process; 3 shows a perspective view of a pallet shaped product obtained from the paperboard / paperboard board. the wavy one.

DESCRIPTION OF THE INVENTION

[022] With reference to the illustrated drawings, the present invention relates to "IMPROVEMENTS INTRODUCED IN PROCESS OF PREPARATION OF PAPER AGGLOMERATED AND COATED PAPER FOR PROCESSING", more precisely the preparation process (10) of agglomerate (AG) to obtain various products (PD), such as pallet-type packaging, boxes, crates, part separators, sound barrier, thermal barrier, furniture, room dividers, decorative panels, among others.

According to the present invention, said agglomerate (AG) preparation process (10) uses as raw material (MP), principal, paper (pl) and / or corrugated cardboard (p2) or other types of cellulose products. . Said preparation process (10) comprises the following steps: a) Shredding paper (pl) and / or corrugated cardboard (p2) to particle size (g) less than or equal to length 100 mm x width 10 mm x thickness of the recycled material itself obtaining crushed material (M1); (b) removal of all metallic material (m2) from the crushed material (M1) by means of an electromagnet (20); c) Drying the crushed material (M1) in a kiln (E) or other suitable one; d) Application of resin (30), preferably in powder form, is preferably carried out in mixers (40), with resin (30) at 10% of the total weight of cardboard (M2). Said resins (30) may be of the type urea, formalin, melamine, phenolic, polypropylene - PP polyvinyl chloride - PVC - or other suitable type; (e) Sheet forming (CH) from mass distribution (M2) in form (50) for hot pressing (P) or mass distribution (M2) on mat (51) for hot pressing (P) in continuous press. Said mass distribution (M2) is carried out between sheets (F1) and (F2), preferably made of kraft paper or recycled paper. f) Both presses (P) promote the gauge of the shaped plate (Cl) to the desired thickness (e) and make the resin cure (30) forming a bond between the paper particles. The minimum pressing load (P) must be at least 50 tonnes and temperature (t) above 200 ° C.

[024] The product obtained (PD) from the agglomerate preparation process (10) (AG) composes a plate (CH) with resistance (rl) to external forces (F) allowing pallet composition (PL) or any another desired product.

[025] In a variation of the raw material (MP) process (10) may use residue to obtain pasta (M2) or plate substrate such as rice husk, vegetable pomace such as cane, banana, or others. | © 2IJ I '. It is certain that when the present invention is put into practice, modifications may be made with respect to certain details of construction and form, without implying departing from the fundamental principles which are clearly substantiated in the claim framework and thus understood. that the terminology employed has no limiting purpose.

Claims (3)

1) "IMPROVEMENTS INTRODUCED IN THE PROCESS OF PREPARING PAPER AGGLOMERATE AND COVERED PAPER FOR OBTAINING MISCELLANEOUS PRODUCTS", more precisely, the process of preparing (10) agglomerate (AG) to obtain miscellaneous products (PD), such as such as pallets, boxes, crates, part separators, sound barrier, heat barrier, furniture, room dividers, decorative panels, among others; characterized in that the agglomerate (AG) preparation process (10) uses as raw material (MP), principal, paper (pl) and / or corrugated cardboard (p2) or other types of products derived from cellulose; said preparation process (10) comprises the following steps: a) shredding the paper (pl) and / or corrugated cardboard (p2) to a particle size (g) less than or equal to length 100 mm x width 10 mm x thickness of the recycled material itself obtaining crushed material (M1); b) removal of all metallic material (m2) from the crushed material (M1) by means of an electromagnet (20); c) drying the crushed material (M1) in a kiln (E) or other suitable one; d) application of resin (30), preferably in powder form, is preferably carried out in mixers (40), with resin (30) at 10% of the total weight of cardboard (M2); said resins (30) may be urea, formaldehyde, melamine, phenolic, polypropylene - PP -, polyvinyl chloride - PVC - or other suitable type; e) forming the plate (CH) from the mass distribution (M2) in the form (50) to the hot pressing (P) or the mass distribution (M2) into the mat (51) for the hot pressing (P) in continuous press; said mass distribution (M2) is carried out between sheets (F1) and (F2), preferably made of kraft paper or recycled paper; f) both presses (P) promote the gauge of the shaped plate (Cl) to the desired thickness (e) and make the resin cure (30) forming a bond between the paper particles; The minimum pressing load (P) must be at least 50 tonnes and temperature (t) above 200 ° C. 2) "IMPROVEMENTS INTRODUCED IN THE PROCESS OF PREPARING PAPER AGGLOMERATE AND COATED PAPER FOR OBTAINING OTHER PRODUCTS", according to the preceding claim, characterized by product obtained (PD) from the preparation process (10) of agglomerate (AG) ) compose sheet (CH) with resistance (rl) external forces (F) for pallet composition (PL) or any other desired product. 3. "IMPROVEMENTS INTRODUCED IN THE PROCESS OF PREPARING PAPER AGGLOMERATE AND COATED PAPER FOR OBTAINING MISCELLANEOUS PRODUCTS", according to claim 1 and in a variation of the raw material (MP), characterized by process (10) using residue to obtain of pasta (M2) or plate substrate, such as rice husk, vegetable marc such as cane, banana, or the like.