materials commonly used office furniture knowledge
(a) Class
aluminum aluminum belong to one category of non-ferrous metal, used widely due, separately described as follows: there are common and aluminum die-casting aluminum two of these consists of up to 92% purity aluminum as the main raw material, while adding increased strength, hardness, wear resistance and other properties of the metal elements, such as carbon, magnesium, silicon, sulfur, etc., consisting of a variety of ingredients & ldquo; & rdquo alloy ;.
1.1 aluminum
common as aluminum screens, aluminum windows and so on. It is using the extrusion process, namely aluminum and other raw materials in a furnace after melting, extruding it through a die forming the outflow, it can be extruded various profiles of different sections. The main properties, namely the strength, hardness, wear resistance, according to national standards, GB63. Advantages are: light weight only 2.8, no rust, design changes quickly, mold into a low longitudinal elongation of up to 10 meters. Aluminum appearance of bright, Matte points, its treatment process using anodized oxide film on the surface treatment to reach 0.12m / m thickness. Aluminum wall thickness by optimizing product design to choose, not the thicker the better on the market, should look sectional structure requirements for the design, it can be 0.5 ~ 5mm uneven. Layman believes thicker and tougher, in fact, is the wrong way.
aluminum surface quality is also more difficult to overcome the shortcomings: warping, distortion, black, white and punch lines. High level design designers were reasonable and die and production processes, to avoid the above drawbacks less noticeable. Check the defect inspection method shall be prescribed by the State, namely 40 ~ 50CM horizon discriminated defects.
aluminum furniture in the wide range of uses: screen skeleton, various suspension beams, tables, table legs, trim, handles, trunking and cover, chair control and so on, can be ever-changing design and use! Although the advantages of aluminum
more, but there are not the ideal place: Aluminum Oxide not easily & ldquo; Rusty & rdquo; causing performance degradation, longitudinal strength smaller than iron oxide layer wear resistance than the product surface. not on the plating layer is easily scratched. high cost, relative to the cost of iron products was up about 3 to 4 times.
1.2 aluminum die-casting alloys and profiles
processing methods were compared using the device are different, with its raw aluminum ingot (purity about 92%) and alloys by melting furnace into the die casting machine molding. Die-cast aluminum imaging product shape can be designed as toys, shapes, convenient connections in all directions. In addition, the strength of its high hardness, and can be mixed with zinc to zinc aluminum alloy.
die casting aluminum craft points:
1, die casting
2, rough polishing to mold than expected
3, fine polishing
On the other hand, the production of aluminum die-casting process, due to mold manufacturing, which mold the cost is very expensive, it was higher than other mold injection molds. At the same time, mold maintenance is very difficult to design a material error is difficult to reduce repair.
each number should be more production and processing, low cost only. Polishing more complex production cycle is slower than the injection of high product costs about 3 to 4 times. Requirements should be larger screw holes (diameter 4.5mm) to connect power to stabilize
Adaptation: legs of the table, Pantai fittings, decorative head, aluminum seal member, table and coffee table backwater like, a very wide range.
(b) Hardware
& ldquo; Hardware & rdquo; concept belongs to the popular saying, the standard classification should be divided into two major categories of ferrous and nonferrous metals, which are used in furniture, tubular, rod, plate, wire, several horn.
2.1
black metal mainly refers to iron products, its advantages are: resistance to deformation, ultra-high strength, wear resistance, high hardness, low price and long life. Genus carbon alloy, it points to high carbon steel, low carbon steel, carbon steel; it points pipe, the pipe, angle iron, steel categories. Tube type is mainly used for chairs products; square tube beams for the carriage class; steel is mainly used for tables, baffles, wall plates, ornaments, corbel, metal cabinets, doors. Guangzhou office furniture factory steel products
disadvantages:
1, rust
2, the volume of re-
3, fear of wet
method to solve the above deficiencies have electroplating, painting, black hair and blue treatment.
hardware molding methods more: bending, cutting, drilling, welding, cutting, pressure-shaped. In short, according to design requirements or product requirements for processing.
2.2 non-ferrous metal products, iron pieces
all external metal parts such as: aluminum, copper, zinc and stainless steel. It has a feature not easy to rust, poor strength than ferrous metals, furniture and more used are: aluminum, aluminum bar, stainless steel pipe, stainless steel, copper, zinc plate.
stainless steel parts: Stainless steel parts divided stainless iron and stainless steel two categories: often called & ldquo; 430 & rdquo; as stainless iron, & ldquo; 304 & rdquo; pure stainless steel, it is determined one of their methods: magnet test, & ldquo; 430 & rdquo; magnet can suck, but & ldquo; 304 & rdquo; can not. Pieces of stainless steel is slightly higher than the proportion of iron products iron products higher prices than 4 times, so only high-end products to use.
Copper: Copper and copper alloys copper points. Copper, also known as copper, hardness strength is poor, but good toughness. Copper alloys used in furniture more brass, which is a zinc-based alloy of copper. Prices slightly higher copper & ldquo; 304 & rdquo; stainless steel copper from 30 to 40%, while brass is lower than 20% of the price of copper. Copper alloy hardness, strength than stainless steel copper slightly higher, but easily broken, brittle. Application of copper pieces of furniture mainly handles, embedded screws. To prevent & ldquo; & rdquo ;, rusty copper plating generally after going to use, and the brass is not required, fewer large-scale use in furniture products.
zinc products: the use of less pure zinc products, primarily zinc alloy or steel combination. Such as galvanized sheet, electrolytic plates. Furniture used less because of poor zinc product strength. Zinc alloy accessories such as eccentric buckle, structural connection points (members) and the like. Zinc alloy is slightly lower than the proportion of iron is about 6.8, the price ranged between steel and aluminum, zinc alloy die-most member in the form of production of furniture accessories.
titanium, zirconium alloys: the case of such relatively expensive metal, which is used in most of the furniture in the form of electroplating, for high-grade handles, hinges and high-speed connections or exposed among hotel furniture. Its chrome plating cost is higher than the cost of about 40%, but the appearance is similar to high-grade gold and silver products, very good abrasion resistance, will not rust.
2.3
metal casting furniture hardware products have many uses castings, such as handles, hinges, etc., the current market popular way many kinds of castings production process, such as: casting process, casting process, the casting process. Casting material brass, stainless steel, zinc, tin alloy, aluminum alloy. Casting Features: exquisite modeling particularly like. The disadvantage is the high cost of a single piece, different casting process costs are different, substantially high to low, casting die-casting, mold cost from high to low is: die-cast molding.
casting products for the shortcomings: a slight increase in the production cycle, the product should after 2 to 3 steps in order to make qualified parts, and accessories, but also according to different requirements for surface decoration or plating, polishing, drawing, sandblasting, fuel injection and other treatment .
(c) Rubber class
3.1 application
plastic pieces of furniture in plastic products is very common example, but there are many categories of materials: ABS, PP, PVC, PU, POM, PA, PMMA, PE, PS, PC, different materials, different adaptation range.
ABS: Common name plastic, can be used to connect the pieces of the seat back, seat, it is capable of plastic plating (water plating) the main raw material.
PP: Polypropylene common name for five-star foot, arm, foot, and less demanding strength connections. Disadvantages: poor wear resistance, low surface hardness.
PVC: Polyvinyl Chloride Common name, mainly for edge pieces, inserted condition. It is suitable for extrusion molding, while the PVC material is a non-combustible materials in plastic parts, molding temperature stability is poor, especially the color stability is not good
PU: Common names polyurethane. Mainly used armrest (foaming) accessories.
POM: Common names match steel. Mainly used for wear-resistant parts, such as the Ottomans, casters, hinges, hinges and so on. Performance wear and pressure, but poor dimensional stability.
PA: Common name nylon. Mainly used as the Ottomans, the five-star claw, casters and other wear and life requirements of high places. Features: wear and pressure, high-intensity indoor long life, individual models such as PA66 high temperature of 2200, the disadvantage is drying in the sun easy to change the performance, easily broken, poor weather resistance.
PMMA :: plexiglass (commonly known as acrylic). There are five transparent plastic material, and is one of the most transparent PMMA with acid taste workpiece cutting, machining deformation easy, soaked with water can be shaped bend. Disadvantages: easy to scratch the surface, the hardness is low, easy to crack when bent, the price is more than 20% higher than ABS. Foshan office furniture
PC: commonly known as polycarbonate. The species also is a transparent material, high surface hardness, scratch resistance, impact resistance, high strength, good weather resistance (that is not afraid of sunlight). Furniture sun screen separator plate of this material is a hollow extrusion molding. Features: high cost price, higher than about 40% PMMA.
3.2
rubber molding rubber varieties are mostly used vulcanization process, which is characterized by: softness is good, can also be different hard and soft adjustment, the shape can be complex, the situation can not release does not exist. Oil, acids, alkalis, abrasion resistance are good. Disadvantages: difficult color rough (especially dark to light) hardness is limited and rough surface, unlike plastic can do mirror effect. But mold, low cost, fast cycle, the production of materials can be mixed into powder, modified magnetic body from the noise, seal.
furniture industry has NBR rubber, silicone and the like. Generally used for furniture wall insulation strips, foot plug, plug the vacuum chuck, rail damping parts.
3.3 Resin & quot;
lipid products are currently a major trend, more and more for furniture, building materials, such as artificial stone materials on the market, artificial bathtub, fire-retardant board, glass and steel products. Unsaturated polymer resin chemical raw materials predominantly liquid, to solidify into a solid formulation and hardener are mixed polymerization reaction heat. It differs from crushing and recycling plastics is that the work can not be used. PP and its cost price is almost, but also with its production process mold casted, but simple mold, available wood mold, plaster mold, rubber molds. Particularly adapted to changing shape, short, small-volume products. Glass steel furniture category is one of them.
(iv) glass products
glass products according to different production processes have flat glass, glass blowing two categories. Currently, a large amount of flat glass, particularly through the plate glass deep processing, more suitable for the consumer market. Blown glass and other crafts made more three-dimensional modeling, classical furniture used in a variety of shapes more. Its characteristics: acid (fluorine acid outside) after alkali, oil, fire, steel resistant to 300
4.1
plate glass plate glass is silicate raw materials, high temperature 1300 degree furnace melting into liquid, flowing tin-forming surface, commonly known as float glass. As the raw material formulation, process parameters difference, green glass, white glass, colored glass three kinds of flat glass appearance carve. Flat glass manufacturing thinner (lower 3mm or less) the greater the difficulty, but too thick (more than 15mm) is also difficult, therefore, both this higher cost on the market.
flat glass using a diamond (ie, ordinary glass cutter), high-speed water cutting, after cutting the sides of the glass can be milling process, such as grinding straight edge, bevel edge, round edge, duck lips, drilling, milling higher prices.
flat glass surface can be sanded (chemical, mechanical two kinds), silk screen painting, painting, engraving process, different surface treatment processes are not the same price, roughly sorted from highest to lowest: matte painting silk painting sculpture.
4.2
glass processing technology, the process is discussed here flat glass processing methods, in addition to the previously mentioned flat glass milling process outside, it can be bending, steel, and other bonding process, so that the & ldquo; flat & rdquo; into & ldquo; three-dimensional & rdquo; effect.
bending: refers to the plate glass begins to soften at about 500 ℃, mold lightly pressed that is required to achieve the deformation effect, inconsistent bending process in different plants and equipment, flat glass should be bending or edging sandblasting.
steel: refers to the glass at about 900 ℃ performed emergency cooling treatment. Its characteristics: no sharp broken glass, while the glass temperature resistance up to 300 ℃ not broken, its intensity is greatly improved by about 10 times.
bond: refers to the use of UV glue, curing by UV irradiation, the bonding glass can withstand more than 200kg after pulling adhesive material do Glass, glass and metal, but the process is different and glue to make a quality product .
above three processes to low cost price of processing methods: steel bending bonding.
4.3 Artistic glass processing
here focuses on the art of flat glass processing methods and results, attended to by definition & ldquo; Arts & rdquo; that is, a certain artistic effect processing
frosted glass: flat glass used in mechanical scrub, the actual results frosted sand is too thick, easy hands marks, while the use of fluorine and other chemical matte which uses soaking syrup is made. The advantage is no fingerprint, coarse sand and delicate, the process is combined with silk surface can make all kinds of patterns, text.
embossed effect: that is embossed using a mold of various patterns, designs, the use of glass to achieve bending deformation temperature, the pressure made by the machine. Currently many kinds of patterns, but also design their own system of molding, embossing glass quality is real pressure bending in a special column.
spray pattern: Spray effect there are two, one is the transparent color effects, and the other is opaque monochrome effect. Spraying inherently glass corrosion inhibitor plus color effects, it does not change the surface of the glass, it does not involve the nature of the glass structure.
paint effects: the glass surface paint treatment. In order to improve the adhesion of the paint, the glass should be painted into the oven dried, so as to achieve permanent adhesion effect.
DECORATED effect: a transparent film pattern printed up, and pasted to the glass surface, high temperature baking, carbide film, and patterns, text that is left on the surface.
(v) sea Cotton
furniture used in many types of sponge with the foam, stereotypes cotton, rubber, cotton, cotton and other memory
5.1
stereotypes cotton material cotton poly acid materials, a variety of additives such as blowing agents, press agents into the simple mold heated to press out the different shapes of the sponge, which is suitable swivel chair sofa cushions, back cotton, a few handrails to do with stereotypes cotton. Currently, the use of 55 # ~ 60 # material density, elasticity more in line with national standards.
hardness adjustable elastic sponge, depending on the different parts of the product to adjust. Usually hard cotton high seat, greater density, followed by cotton back, Dan cotton softer.
5.2
hair foam polyether foam molding with this material, like foam bread. Available machinery foam can also be surrounded with wooden artificial foam, foamed cotton like a big square bread, sliced using a slicer step, according to the different requirements of cutting thickness, the foam may also be adjusted softness . Cotton seat generally use 25 ~ 28kg / m5, other uses ~ 22kg / m3 density.
hardness and density foam, although there is a direct relationship, but with a different additive has a relationship, so the industry from high elastic, super ash. smudge ultra soft cotton. Products should be designed to use depending on the shape, structure rational science with general upper, middle and lower three parts with different elasticity, density sponge.
sponge there is a fire cotton material called, in fact, is a former sponge foam, add fire retardant material formulations, such as chlorine, bromine can produce when making sponge fire flame smoke, play a flame retardant.
5.3 a kind of sponge rubber cotton
, it uses raw ingredient is a natural latex foam is made, it has the characteristics of rubber, elastic excellent resilience, and not deformed, but expensive than hair 3 to 4 times higher than the foam.
the three cotton price from highest to lowest: the foam rubber, cotton stereotypes cotton recycled cotton
5.4
furniture products are called & ldquo; & rdquo ;, recycled cotton in fact it is made of sponge and scrap squeeze connection . Low cost, but poor flexibility, density varies.
(vi) leather
leather industries in the country is a door type, but also a set of appropriate standards.
6.1 artificial leather
commonly known as spinning Paper, which according to the thickness of the points, a type (0.9 ~ 1.5m / m), II & gt; 1.5mm two kinds. Many leather look pattern, generally require meticulous lines, uniform, uniform color, no surface scratches, cracks.
artificial leather is the essence of polymer plastic PVC, PE, PP blown film forming and the like through a variety of surface coating paste. For artificial leather sofa chair feel great attention should be smooth, soft, flexible, no smell. Wherein the fracture rate should be long & le; 80%, easy bleaching, namely color fastness to rubbing should be more than 4.3.
6.2
natural leather natural leather mainly refers to a variety of animal skins processed products. Currently, with leather furniture with leather-based, it looks consistent with the requirements of artificial leather, but its tensile strength, tear strength than artificial leather good. The disadvantage is that the appearance of the pattern is uneven, especially calf, there are very section scars exist, defective scar surrounding skin that is less flexible.
natural skin also by the thickness of the layers separately and split leather, animal skin is the first layer of skin surface, elastic flexibility, more expensive than a thickness of between 0.8 to 1.5; split leather is animal skin slashing the surface of the skin outer skin thickness ranging from 2.8 to 3.5, poor flexibility, but good strength, tensile strength of 200N / M2 above.
(vii) the glue class
more varieties of furniture products use glue, glue reasonable and appropriate choice of product quality greater impact, especially durability quality. Press the glue solvent-based and water-based glue different sub-solvent glue.
7.1 based glue
refers to water-based glue glue solvent with water to adjust the concentration of glue, use it between the fire board and plywood or particle board between the bonding adhesive sheet furniture, such as: do door MDF and adhesive paper honeycomb core doors are water-based glue. Features: low price, good environmental protection, but the adhesive curing more than 4 hours. Long production cycle, production is simple to operate, the available brush, rubbed the like. Due to the long processing cycle water-based glue, for rush orders is affected, on the other hand artificial coating unevenness easily, and thus lead to blistering, quality accidents local deformation. & Quot;
7.2 solvent solvent adhesive glue
currently manufactured using benzene as a solvent, the body is plastic resin and other polymer material, its viscosity fast curing time than water-based glue, the method can also be used a spray gun, so the province time and effort, glue coating evenly.
current screen with screen cloth bonded, chairs, sofas and sponge cloth, are using spray adhesive bonding method, you can do the spray is placed or installed. The use of solid wood products solvent glue, between the majority of wood (such as sofa legs, frame) adhesive bonding between plate and veneer. Solvent and water-based adhesive glue solidified form, which is designed to allow water to evaporate curing process, while the former majority by air & ldquo; oxygen & rdquo; the role of curing by oxygen molecules or between internal self-heating effect curing. The solvent sponge spray glue, when stereotypes cotton cloth or different, selected models are different, mainly due to the above-mentioned materials are also high. A12b34c53fg3p7
molecular materials. When used wrong will degumming, blistering, dehydration. Tack test two items: to be resistant to ambient temperature (high and low) testing and weathering test (ie aging UV irradiation). In addition, the solvent gum also divided glass, plastic, metal plastic, glass and metal and other types of plastic.
(viii) cloth
furniture products selected cloth divided into two categories: man-made fiber fabrics, textile fabrics and other natural, man-made fiber fabric is generally the majority. 8.1 types of artificial synthetic fabrics
yarn fineness is the degree of thickness, can withstand tensile strength means; spring rate, refers back to the original size after stretching ratio; initial modulus, tensile stretching refers to a length of 10% of the original length when. For home use, the kind that is material to the case of the condition what is useful, are presented below:
low moisture absorption material: PP (polypropylene), polyvinyl alcohol, polyester, the use of such material is suitable for humid climates and regions.
good heat resistance material: polyester, acrylic (polyacrylonitrile), the use of such material is suitable for tropical and high temperature operating environment.
light is good material: acrylic, polyvinyl alcohol, polyester, adapt to the outdoor environment products, such as: beach chairs.
alkali resistance good material: polyamide fiber, polypropylene, polyvinyl chloride (PVC-ene fibers).
good acid resistance materials: acrylic, polypropylene, polyester.
not easy to mold: round dimension, polyester, polyamide fibers, adapted to damp places.
good wear resistance materials: polyvinyl chloride, polypropylene, polyvinyl alcohol, polyester fiber, polyamide fiber.
elongation good material: polyvinyl chloride, polyvinyl alcohol
From the above analysis, the current chair suitable for indoor materials PVA, polyvinyl chloride, polypropylene, polyamide, etc., poor light material must not be used outdoors, outdoor, otherwise life is very short.
8.2 natural fiber cloth
natural fiber cloth: cotton, linen, wool, asbestos fibers, which are used for furniture, only cotton, linen two categories, the characteristics of natural fiber cloth is environmental protection, good insulation, wear-resistant good, but good alkali resistance cotton hemp poor acid resistance, light resistance and hair is not good. Thus, according to the above features optional material design is crucial. Natural fiber cloth coarse fiber than people good fortune slightly higher price point.
(IX) Exterior Decorative Film category
furniture plate products, timber due to different design requirements, should be a variety of exterior decoration film processing. Such as screen products: all kinds of stickers will now cover new product introduction as follows:9.1 software
Boeing essence of this material is PVC plastic film blowing molding machines and die by blowing up the control width and thickness. Most currently used to do a thickness of 0.18 to 0.22 is pasted sheet surface. Boeing film surface texture pattern is formed through the molding process,
In addition, it also applied adhesive glue. Its characteristics are low cost, easy to use, the drawback is the material forming the reasons due to temperature changes, leading to difficulties in the toner, there are differences in each batch. Since the case of PVC fire-retardant materials, it also played after Boeing film bonding surface of the flame retardant, suitable for building materials. The disadvantage is that because the coating glue glue individual traces of oil degumming, good adhesion, easy blistering, poor surface hardness. Thus, Boeing film factory production environment to the product quality.
9.2
decorative film decorative film has melamine paper, HPL film, these two belong to polymer materials, non-flammable, so after pasting the sheet, also known as fire retardant board or plate. MFC melamine paper plate is bonded and prime plate processing, generally have specialized processing plant equipment, Firewood backsize, vegetarian plate furniture factory coating with cold cold eight hours after the press can be applied to furniture.
9.3 affixing
veneer veneer Material many commonly have hardwood veneer, veneer catalpa, oak, walnut veneer, leather maple, beech veneer and so on. Market veneer thickness of 0.3mm, but require a higher quality product, but also due to the work surface after sanding paste the cover, it is 0.3mm veneer easily broken, so that high-quality products are generally covered by 0.5 ~ 0.6mm stick. Veneer affixing a useful water-based glue, there are solvent glue, is a large area of water-based glue, topical, or a small area with a hardwood surface of the adhesive is solvent glue. Veneer because of different species, the price is also different. For example, the unit price per square leather hardwood Walnut than a difference of 3 to 4 times, probably by high to low price veneer arranged as follows: walnut maple / beech wood hardwood oak Catalpa. Due to their different origins veneer wood surface texture node is different. Two categories, such as wooden sticks ruled, mountain lines, currently using more. Veneer is a natural for many, but there are artificial veneer: wood technology. Its veneer characteristic lines clear and orderly arrangement, no dead knots plus wooden eye. Since the veneer species, different rings, monolithic veneer width size of the points, so the veneer processing should be carried out or fight parquet pattern, after stitching lines approximate natural texture. Veneer splicing use as sewing like & ldquo; line & rdquo; be sewn, this & ldquo; line & rdquo; practical as a heated melt into glue & ldquo; glue & rdquo; called hot-melt adhesives, learning called EVA plastic, but also a hot plastic.
(X) class artificial board
artificial board many varieties: There glued plywood, wood, fiberboard, honeycomb panels, fire-retardant board (gypsum board, calcium silicate), aluminum panels, the United States and chopping board, can be set plates, decorative plates, Polaroid board. Dimensions: 1220 * 2440 (4 & rsquo; * 6 & rsquo; feet), 1525 * 2440 (6 * 8 & rsquo; feet), 1850 * 2440,1850 * 2880.10.1 gluing plywood
glued hardwood plywood made by leather and glue laminated generally timely pressure using horizontal, cross-laminated strong. Purpose is to play a role in enhancing the strength. Usually 12 per cent more than the thickness of the plate layer above claim 9, 10 cm thick layer of 5 or more. Glued plywood by category four categories, namely, weather-resistant, moisture-resistant plywood Class I, Class II water-resistant plywood, moisture-resistant plywood class III, class IIII plywood tide of intolerance. Different price difference between the larger, should be optional according to different purposes.
sizes are: * 915 * 1220,915 2135,915 1830,915 * * 2440,1220 * 1830,1220 * 2135,1220 * 1220,220 * 2440 thickness: 3, 3.5 to 20 range.
10.2 Blockboard
joinery are spliced together by the core plate, the two outer surfaces of the plastic sheet bonded. This board nail holding power than plywood, particleboard high. Dimensions are as follows: * 915 * 915,915 * 1830,915 * 2440,1220 2440,1220 1220,1220 * 1830 * thickness of 5 to 30 as the like. This board prices are more expensive than plywood, particleboard. It is suitable for high-grade cabinet products, processing technology with traditional wood almost.
10.3 honeycomb panels
honeycomb paper honeycomb panels can say, it is about 200g kraft paper formed into a honeycomb shape, and telescopically stretched products is divided into A, B, C three. Its advantages are: light weight, easy to distort, but it is to combine and MDF or particle board was used alone. Especially suitable for preventing deformation span table. Or moisture sensitive door core deformation. But to produce a cold or hot pressing, and thus lower productivity.
10.4
Fibreboard Fibreboard of wood fiber separation after pressing composite. It is divided by the density of the high density, medium density. Usually use more medium-density fiberboard, specific gravity of about 0.8 or so. Its advantage is that the surface is smooth, easy to paste Boeing film, spray adhesive cloth, not easy to absorb moisture deformation, the disadvantage is often less effective drilling particleboard, particleboard prices are higher than the 5 to 10%.
10.5 flame retardant board board
major industrial magnesia raw materials, whose binder resin material, resulting in low cost, fire-retardant board, also known as non-combustible board. Its processing performance and particleboard, MDF approximation. Non-absorbent, immersion 12 hours without incident. Retardant board in a class dominated by gypsum raw materials, but also non-combustible flame resistance, but poor moisture absorption, topical and easy expansion drilling nailing too. Another silicate board, which also has flame-retardant properties, but not in weight than magnesium retardant board weighs 1.5 times, nail holding power can not, on the load-bearing structural components requiring high strength, cost is also increased.
10.6 aluminum plate, sheet of such beauty chopping board
genus composite materials, aluminum plate surface bordered in aluminum plastic plate on top of the other places a plastic plate will be mainly aluminum vacuum process, two kinds respectively in terms of cost, function the same. US aluminum plate chopping board is a category, which in addition to a plastic board table inlaid aluminum layer, but also through a variety of art embossing pattern (ie texture design differences) characteristics of fireproof aluminum composite panel, lighter weight, but also do curved shape . Disadvantages: higher prices. Nail holding power is poor, only with glue or clamp connection technology, so only for a limited part of the product.
10.7
Particleboard particleboard wood cut by a certain temperature rubber hot pressing. Carved wood cut veneer wood cut, bagasse, wood shavings and other ingredients composition. General quality raw materials to manufacture particle board of wood shavings, which consists of a core material layer, the outer surface layer and transition layer composition. Outer skin contains a high amount of glue, nail holding power increase, moisture, sanding, use of plastic materials and certain solvents from the process of particleboard, it led to a certain amount of benzene chemical composition, divided according to their different content E0, E1 , E2 grade particleboard while also separated moisture particleboard, particleboard prices slightly higher than ordinary.
10.8
foam board foam board mainly PP, ABS, EPS, EVA foamed material in one molding, due to cost reasons, foam board PS, EVA two categories majority. Foam board insulation can be used, the pushpin nailing and so on. Especially for low strength structural parts, bearing the weight of low occasions. Boeing film and foam board, fabric adhesive, glue and the right to choose the different parameters for the job, otherwise there is blistering.
13510505995