GB/T 18259-2018Terminology for wood-based panels and their surface decoration (English PDF)

2.1 Wood-based panel

Using wood or non-wood plant fiber materials as the main raw material, processing into various material units, applying (or not applying) adhesives and other additives Additives, made sheets or shaped articles.

Note: mainly including plywood, particle board, fiberboard, etc.

2.2 Functional wood-based panel

It has wood-based panels with special properties such as flame retardant, anti-corrosion, anti-mildew, anti-bacterial, insect-proof, weather-resistant, anti-static, heat insulation and sound absorption.

2.3 Flame retardant wood-based panel

Wood-based panels with flame retardant properties.

2.4 Insect resistant wood-based panel

Wood-based panels with insect resistance.

2.5 Antibacterial wood panel

A wood-based panel that has the ability to resist fungal attack.

2.6 Antistatic wood-based panel

Artificial board with antistatic function.

2.7 Electromagnetic shielding artificial board

Wood-based panels with electromagnetic shielding.

2.8 Formaldehyde-free added wood-based panel

A wood-based panel processed without adding any formaldehyde-containing adhesive or additive during the production process.

2.9 Structural wood-based panel

With high strength and durability, it can be used in construction engineering structures and wood-based panels with specified load carrying capacity.

2.10 Outdoor wood panel

Artificial panels that can be used outdoors.

2.11 Reinforced wood

Add wood-based panels of fiberglass, carbon fiber, metal mesh or other reinforcing materials.

2.12 Multi-layer composite wood panel

A multi-layer structural board composed of two or more kinds of artificial boards or a composite board mainly composed of other sheet materials.

2.13 Finished wood panel

A panel made of wood-based panels, finished or finished with various decorative materials.

2.14 Formed wood-based panel

A wood-based panel with a certain curved shape.

2.15 Perforated wood panel

A perforated wood-based panel with sound absorbing and decorative effects.

2.16 Embossed wood panel

A wood-based panel having an embossed pattern on its surface by molding or boring.

2.17 Inorganic adhesive wood-based panel

A wood-based panel glued with inorganic binders such as cement, gypsum, slag, and fly ash.

2.18 Suspension speed

When gas is used to transport fine materials and particles such as fibers and shavings, the material is in a suspended state and does not sink at a minimum air velocity.

2.19 Prepressing

Under normal temperature conditions, the slab after the blank or the pavement is pressurized to achieve a certain degree of compactness, thickness and initial strength. Process.

2.20 Pad

Support and transport the slab into the liner of the press.

2.21 Slab preheating

The slab is preheated before entering the hot press.

2.22 Slab glue

The process of forming a slab at a certain temperature and pressure with or without the application of the slab of the adhesive.

2.23 Release agent

In the process of wood-based panel production and surface decoration, in order to separate the hot-pressed sheet from the backing plate, formwork or steel strip, it is added to the tree. A material in grease or coated on a backing, stencil or steel strip.

2.24 Cold press

The slab is pressurized at room temperature and allowed to form a plate after a certain period of time.

2.25 Hot press

The process of pressing and heating the slab to form a plate after a certain period of time.

2.26 Steam injection method

A method of injecting steam into a slab to cause its center temperature to rise rapidly.

2.27 Spray-vacuum hot pressing

During the hot pressing process, the steam is sprayed from the vertical plate surface or the side surface into the interior of the slab, and then the vacuum is used to suck out the excess in the slab. A method of hot pressing of water.

2.28 High frequency heating method

A method of heating a high frequency medium to increase the temperature of the slab.

2.29 Continuous flat pressure method

The slab enters the continuous flat press from the inlet end, and moves forward at a certain speed while heating and pressurizing, and finally from the outlet end. A hot pressing method for outputting a continuously formed strip.

2.30 Continuous rolling method

The slab after paving is conveyed by the steel strip into the continuous roller press, and advances around the arc of the main pressing roller at a certain speed. During the operation, the main slab The press roll and a plurality of auxiliary press rolls pressurize and heat the slab, and finally a hot pressing method of outputting the continuously formed strip from the exit end.

2.31 Continuous extrusion method

The sizing shavings are quantitatively fed into the flatbed extruder, and the strips are continuously extruded under the action of punch extrusion and hot plate heating. method.

Note: It is divided into vertical extrusion and horizontal extrusion.

2.32 Platen spacing

The vertical distance between the opposite faces of the two adjacent press plates of the hot press.

2.33 No pad hot pressing

Hot pressing without padding.

2.34 Intermittent press closing time

After the slab is loaded into the press, from the closing action of the press plate to the upper surface of all the slabs in the press contacting the lower surface of the hot platen time.

2.35 Simultaneous closing

The hot plate of each layer of the multi-lamination machine realizes the process of synchronous opening and synchronous closing.

2.36 Intermittent press boost time

After the press is completely closed, the slab begins to be pressurized until the pressure per unit area reaches the specified value.

2.37 Hot pressing time

The slab is in the hot press from the time when the pressure per unit area reaches a prescribed value until the time when the pressure is completely released.

2.38 Intermittent hot pressing curve

The curve of pressure and temperature with time during slab hot pressing.

2.39 Pre-cured layer

When the slab is hot pressed, the adhesive is pre-cured to form a loose layer on the surface of the artificial board before the unit pressure reaches the specified value.

2.40 Trimming

The process of cutting a wood-based panel into a finished panel of a certain size.

2.41 Sanding

Grinding method to make the wood-based panel to the specified thickness and thickness tolerance, and to make the surface smooth and smooth.

2.42 Post-processing

Cooling, trimming, sanding, quenching and tempering of cold-pressed or hot-pressed wood-based panels.

2.43 Wood-based panel defects

A general term for the appearance and processing defects that affect the quality and grade of wood-based panels.

2.44 Delamination

Separation of the bonding surface of the artificial board due to lack of glue or poor glue.

2.45 Bubbling

A defect in which holes are formed in the plate and locally protruded on the surface due to failure of the gluing.

2.46 Corner defect

Loss or damage to the four corners or edges of the panel due to improper mechanical or human manipulation.

2.47 Soft edge and corner

The structure of the edge and corner of the board is rough and soft.

2.48 Indentation

Local indentations on the surface of the panel due to external factors.

2.49 Stain

A substance that is formed on the surface of a wood-based panel by grease, oil, or an adhesive, and which has a difference in color from the surface of the board.

2.50 Streak

The color of the panel appears on the surface of the panel.

2.51 Charring

During hot pressing or heat treatment, the surface of the artificial board is carbonized due to excessive temperature, which causes a defect of brownish black on the surface of the board.

2.52 Missing sand

Defects caused by the partial surface of the wood-based panel not being sanded.

2.53 Sand marks

Defects formed by the appearance of strips or strips on the surface of the artificial board after sanding.

2.54 Dry state

Indoor environment or outdoor environment with protective measures, the moisture content of the material in this state is equivalent to its temperature at 20 ° C, relative humidity is not Moisture content achieved in an environment above 65% (or relative humidity of more than 65% in a few weeks of the year).

2.55 Wet state - temperate

Indoor environment or outdoor environment with protective measures, the moisture content of the material in this state is equivalent to its temperature at 20 ° C, high relative humidity Moisture content achieved in an environment of 65% but not more than 85% (or a relative humidity of more than 85% in a few weeks of the year).

2.56 Wet state - tropical

Indoor environment or outdoor environment with protective measures. The moisture content of the material in this state is equivalent to its temperature at 30 ° C and high relative humidity. Moisture content achieved in an environment of 65% but not more than 85% (or a relative humidity of more than 85% in a few weeks of the year).

2.57 High-humidity condition

Indoor environment or outdoor environment with protective measures, the moisture content of the material in this state is equivalent to its relative humidity at temperatures above 30 ° C The moisture content achieved in an environment with a degree greater than 85% or occasionally in contact with water (other than water or watering).

2.58 Outdoor state

The state of the environment in outdoor natural weather conditions.

2.59 Outdoor exposure test

The artificial board is exposed to outdoor natural weather conditions, and the test of the change of physical and mechanical properties is periodically observed and measured.

2.60 Weatherability test

Using equipment that simulates various outdoor climatic conditions, the wood-based panels are subjected to certain conditions such as temperature and humidity changes and timed illumination to accelerate After aging, tests for changes in physical and mechanical properties were tested.

2.61 Falling ball impact test

A steel ball of a certain diameter and mass falls freely from the specified height on the surface of the material, depending on whether the surface of the material is cracked or indented. Diameter is a test method for measuring the impact resistance of a material surface.

2.62 Dip peel test

After the test piece was immersed in water at a certain temperature and dried, the test of the peeling and peeling degree of the adhesive layer was observed and measured.

2.63 Moisture content

The percentage of the moisture content of the material and the absolute dry mass of the material.

2.64 Surface roughness

The degree to which the surface of the material is uneven.

2.65 Dimensional stability

The ability of a material to retain its original size and shape as the environmental conditions change.

2.66 Durability

Long-term resistance to damage by organisms (fungi, insects, etc.) or external environmental factors (high temperature, light, humidity, etc.).

2.67 Strength weight ratio

The ratio of the strength and density of the material.

2.68 Section density distribution

The density distribution in the thickness direction of the artificial board is expressed by the section density curve.

2.69 Water absorption thickness expansion rate

The percentage of the increase in thickness of the test piece after immersion in water of a certain temperature for a specified period of time.

2.70 Water absorption rate

The percentage of the mass increase and the original mass of the test piece after being immersed in water of a certain temperature for a specified period of time.

2.71 Boiling water resistance

Measure the ability of a material to resist damp heat.

2.72 Creep

Under certain environmental conditions, when the material is subjected to a constant external force, its deformation gradually increases with time.

2.73 Formaldehyde release

A wood-based panel pressed with a formaldehyde-based adhesive such as urea-formaldehyde resin, which continuously emits formaldehyde gas to the outside during manufacturing, stacking, and use. The phenomenon.

2.74 Glue grade

The grading of the ability of the structural type wood-based panel to resist the action of moisture.

Note: The gluing grade is mainly divided into two grades of grade I and outdoor grade, which determines the environment in which the panel is used.

2.75 Expose level I

A glue grade for wood-based panels that can be temporarily exposed to outdoor environments.

Note: This glue grade wood-based panel can resist the influence of moisture on its performance due to construction delays or rain.

2.76 Outdoor level

A glue grade for wood-based panels that can be exposed to outdoor environments for extended periods of time.

Note: This glue grade wood-based panel can resist the effects of dry-wet alternation caused by outdoor climate change or other similar conditions on its performance.

2.77 Loading rate

When detecting the mechanical properties of the test piece, the amount of increase in the load or the amount of deformation of the test piece changes with time.

2.78 Hardness

The artificial board partially resists the ability of the hard object to press into its surface.

2.79 Screw force

Use the specified type of wood screw, screw it into the board to a certain depth and pull it out for the maximum pulling force required.

Note: It is divided into the surface holding screw force and the board side holding screw force.

2.80 Glue strength

The ratio of the maximum load required to cause damage to the interface between the adhesive and the adherend in the bonded sample and the bonded area.

2.81 Static bending strength

The ratio of the bending moment to the flexural section modulus of the material under the action of the maximum static load.

2.82 Modulus of elasticity

The ratio of stress to strain due to load in the elastic limit range.

2.83 Inner bond strength

The ratio of the maximum load to the loaded area when the specimen is broken under the tensile load of the vertical plate surface.

2.84 Surface bond strength

The ratio of the maximum load at the specified depth of the test piece to the load-bearing area of the test piece under the tensile load of the vertical plate surface.

2.85 Tensile strength

The ratio of the maximum tensile load of the test piece to the load-bearing area of the test piece.

2.86 Compressive strength

The ratio of the maximum compressive load of the test piece to the loaded area of the test piece.

2.87 Shear strength

The ratio of the maximum shear load of the test piece to the sheared area of the test piece.

2.88 Rolling shear damage

Shear damage caused by shear stress on a plane perpendicular to the wood grain.

2.89 Impact toughness

Under the impact load, the ratio of the energy consumed by the test piece to the load-bearing area of the test piece is generated.

2.90 Adhesive

A material that binds adherends by physical or chemical action.

2.91 Bonding

A state in which a solid surface is bonded to each other by means of an adhesive or the like by means of physical force, chemical force, or both.

2.92 Gluing

The process of joining the surfaces of the adherends with an adhesive.

2.93 Wood adhesive

An adhesive that can bond different forms of wood (or wood and other materials) under certain conditions.

2.94 Binder

In the adhesive, a component that plays a major role in bonding the surfaces of the two adherends together.

2.95 Natural polymer adhesive

An adhesive made of a natural polymer compound as a binder.

Note: Natural polymer compounds include starch, animal and plant proteins, and natural rubber.

2.96 Animal glue

An adhesive made of animal skin, bone, tendon, blood, etc. Examples. bone glue, gelatin, blood gelatin, and the like.

2.97 Plant gum

An adhesive made of a plant material such as starch or vegetable protein as a binder. Examples. starch adhesives, protein adhesives, gums, and the like.

2.98 Inorganic adhesive

An adhesive made of an inorganic compound as a binder.

Examples. silicates, phosphates, and basic salts, oxides, nitrides, and the like.

2.99 Organic adhesive

An adhesive made of an organic compound as a binder.

2.100 Resin type adhesive

An adhesive made of natural resin or synthetic resin as a binder.

2.101 Rubber adhesive

An adhesive made of natural rubber or synthetic rubber as a binder.

2.102 Powder adhesive

An adhesive which is powder-free at normal temperature is formed from a resin or the like without a solvent.

2.103 Paste adhesive

A paste-like adhesive.

2.104 Film adhesive

A film-form adhesive with or without a carrier which is usually cured or hardened by a heat and pressure method.

2.105 Synthetic resin

A high molecular weight polymer having a certain property obtained by a chemical reaction using a low molecular compound as a raw material under certain conditions.

2.106 Synthetic resin adhesive

An adhesive made of synthetic resin as the main binder.

2.107 Thermosetting resin

A resin which forms an infusible substance by curing by heating or the like.

2.108 Thermoplastic resin

It is a solid, and it is a fusible resin with fluidity or plasticity after heating.

2.109 Amino resin

A resin formed by condensation reaction of an amino or amido compound with an aldehyde compound.

2.110 Phenolic resin

A resin obtained by condensation reaction of a phenol with an aldehyde.

Note: The commonly used phenolic resin is phenol formaldehyde resin.

2.111 Urea-formaldehyde resin

A resin obtained by polycondensation of urea and formaldehyde.

2.112 Melamine formaldehyde resin

A resin obtained by polycondensation of melamine and formaldehyde.

2.113 Urea-melamine-formaldehyde resin

A resin obtained by polycondensation of urea and melamine with formaldehyde.

2.114 Epoxy resin

A resin having a crosslinkable epoxy group is contained in the molecular structure.

2.115 Polyvinyl acetate adhesive

An adhesive containing a vinyl acetate polymer as a main component.

2.116 Polyisocyanate adhesive

An adhesive containing small molecules of polyisocyanate.

2.117 Polyurethane adhesive

An adhesive based on polyurethane.

2.118 Phenol-resorcinol-formaldehyde resin adhesive

A prepolymer obtained by addition polymerization of phenol, resorcinol and formaldehyde.

Note: It is often used as an adhesive for finger joints and laminated materials.

2.119 Curing

An irreversible process of converting an adhesive from a liquid state to a solid state by a chemical reaction (polymerization, crosslinking, etc.).

2.120 Moisture curing adhesive

An adhesive that cures in response to moisture from the environment or the adherend.

2.121 Room temperature curing adhesive

An adhesive that cures at room temperature.

2.122 Thermosetting adhesive

An adhesive that uses a thermosetting resin as a binder.

2.123 Curing time

The time required for the adhesive to cure under certain temperature and pressure conditions.

2.124 Hardening

By drying, crystallization or cooling, the adhesive is transformed from a liquid to a solid state without a chemical change.

2.125 Solid content

Under the specified test conditions, the mass of the non-volatile material in the resin is the total mass percentage of the liquid resin.

2.126 Free formaldehyde content

The mass of formaldehyde which does not participate in the reaction of the formaldehyde resin accounts for the percentage of the total mass of the resin solution.

2.127 Free phenol content

The mass of phenol which is not involved in the reaction in the phenolic resin is a percentage of the total mass of the resin solution.

2.128 Storage period

When the resin is stored under given conditions, it retains its performance within the specified specifications.

2.129 Adhesive modulation

A process in which a curing agent and/or other additives are added to the resin in a certain ratio and mixed uniformly.

2.130 Curing agent

A substance that promotes or controls a curing reaction such as a resin.

Note: There are two types of catalysis and cross-linking.

2.131 Latent curing agent

A curing agent that is chemically inert […]