PSF plywood. What kind of material is this? Kinds, grades, cost

Plywood - a multi-layer material in the form of square plates, which is made by the method of gluing several layers of wood veneer. It is widely used in construction, mechanical engineering, furniture production and other spheres. Often, ordinary consumers ask such a question: "FSF plywood - what is it?" About this product, its features, advantages will be discussed in this article.

Features of PSF plywood

So, FSF plywood - what does this mean? F - plywood, SF - resin phenol-formaldehyde glue. This wood material is made from birch, coniferous or beech veneer. It has properties of increased moisture resistance. There is a plywood of three or more layers of veneer glued together with formaldehyde glue. It is characterized by dark red or dark brown adhesive layers between the plates, which are visible at the ends of the canvas.

Plywood PSF, the technical characteristics of which allow its operation in any climatic conditions, is a natural material with a beautiful aesthetic appearance. It is used for construction and exterior finishing works. It is not recommended to use the material inside the living quarters, since it contains toxic substances.

Moisture-proof plywood can be made of coniferous species. According to the production technology, in the outer layers must necessarily be present coniferous veneer. Internal plates can be from hardwoods. This plywood is used in construction. It is resistant to decay, to fungi. Birch plywood FSF is characterized by excellent quality, strength, durability and high cost. All layers in this product are made of birch wood, it is 15-20% stronger and heavier than coniferous wood.

Strength limit of moisture-resistant PSF plywood:

• When stretching it is 40 MPa;
• When bending - 60 MPa;
• When breaking through the adhesive layer - 1.5 MPa.

Scope of application

The PSF plywood, whose technical characteristics are quite high, justifies its application in the field of electrical engineering, in the aviation industry, in construction, in car and automobile construction. Use this material when erecting frame structures, fences, shuttering structures, in roofing works. Widely used plywood 18 mm FSF for the manufacture of garden furniture, outdoor advertising boards, packages and packaging.

Advantages of plywood

PSF plywood (what is this material - written above in the article) has many advantages.

1. Increased moisture resistance. Moisture or condensation does not affect its performance. In this case, it does not swell, does not unstick, and retains the properties of strength.
2. Resistant to mechanical damage. Due to its structure, plywood sheets withstand the effects of deformation on bending and tearing. This wood material is durable and durable.
3. Simplicity and speed of installation. The material is easy to process, convenient, which facilitates simple and quick installation. You can fasten it with screws, screws, nails. It goes well with other synthetic or natural materials.
4. Versatility. Reliability, moisture resistance allow using it in various fields of application.
5. Easy to process. The PSF plywood, although it has an increased strength, is easily machined with tools. It is well suited to grinding, drilling, cutting.

It is these indicators that ensure the popularity of plywood, its use in industry and construction.

Disadvantages of PSF plywood

• Toxicity. In the manufacture of plywood used carcinogenic components that affect human health. Use of this material indoors is not recommended.
• Flammability. The material is highly flammable.

Varieties of PS plywood

The FS plywood distinguishes five grades: E (elite), 1, 2, 3, 4. The division of the material into categories is carried out on the basis of the outer layers of the surface:

• Е - ideal quality of external sheets;
• I (B) - product without visible defects;
• ІІ (ВВ) - absence of knots on a sheet of plywood; black spots are acceptable;
• ІІІ - (СР) it is possible to seal the defects with veneer inserts;
• ІV grade (C) - knots are allowed;
• SS - the lowest grade, on the sides of the canvas are visible veneer joints and other flaws.

The degree of surface treatment of the PSF can be:

• NS - not polished;
• Ш or Ш 1 - with one-sided grinding;
• Ш or Ш 2 - with two-sided grinding.

To mark the material and grade, add an alphabetic symbol, which means the degree of sheet processing. In addition, the class of formaldehyde emission is necessarily indicated. The plywood of this species is 4-40 mm thick. The dimensions of the plywood canvas are: 1525x1525, 1220x2440, 1250x2500 mm.

How to distinguish PSF from plywood from other species

If you do not know how different it is from other types of PSF plywood, what kind of material is it, what are its characteristics, ask the sales consultant or determine by its own external signs. At the ends of the sheets between the layers of veneer are visible streaks of glue of dark color. FC plywood, unlike PSF, has light yellow glue gleams.

Price

If you need moisture-resistant plywood PSF, the price of sheets of the same size and thickness can be different. Decide first with the kind of material. The cost depends on the grade of the product and its manufacturer. The number of defects present on the surface of the outer layers of the material determines one or another of its varieties. And, naturally, the higher the grade, the more expensive the product. Since the plywood has two outer sides, the variety is defined by double numbering, for example 2/4. In addition, each manufacturer of PSF plywood sets its prices for manufactured products. Therefore, little is said about the quality of the product.