Doors can be sorted by various categories. One group is defined by the material: Wood, steel, iron, uPVC/Vinyl, aluminum, composite and glass (patio doors). Another one relates to the purpose of usage: Exterior (residential front door), interior, patio, emergency exit and garage. There are also other classifications referring to the surface type like flush, glazed and molded panel doors, or other specifications, e.g. fire-rating. Wooden doors are a top choice for many homeowners, largely because of the aesthetic qualities of wood. They are available in an incredible variety of colors and designs to match any home. Such doors also benefit from both elasticity and lightness of wood spars and pressure-resistance quality of Kraft paper honeycomb used in manufacturing door leaves. Fire-rated doors, on the other hand, are manufactured using hollow core chipboard upon customer demand.
Our production of interior doors involves manufacturing of 7 types of door leaves: Molded panel, untreated leaf, melamine-faced, PVC-faced, lacquered, wood-veneered and laminate. Molded panel doors are fabricated using two HDF layers (each 3,2 mm thick) as surface on both sides. Melamine-faced, PVC-faced, lacquered, wood-veneered and laminate door leaves are produced using MDF boards treated with the corresponding finishing material. Melamine-faced door surface is made of 4 mm thick MDF board treated with melamine. PVC-faced doors are fabricated using either 4 mm or 6 mm thick MDF boards. The PVC foil is bonded onto the MDF boards via membrane tool. Lacquered door leaves that have 6 mm thick MDF boards as outer layers are primed, sanded and painted. In manufacturing wood-veneered doors, 6 mm thick MDF surface with a wood veneer is used. Laminate doors are manufactured applying laminate facing on 4 mm thick MDF boards.
Main components used in manufacturing interior doors are wood spars, Kraft paper honeycomb, metal fastening wire, untreated or treated MDF/HDF boards, adhesives, edge band, coating items (polyurethane primer and paint, lacquer, wood filler and varnish topcoat), finishing materials (wood-veneer, melamine, PP, PVC and micro laminate). Finger-joint spars which form the main frame of the door leaf are made of spruce or fir trees. Additional spars are used in the handle, lock and hinge parts. Metal stapler is used to fasten the spars. Kraft paper honeycomb core ensures lightness and pressure resistance. MDF layers treated with various finishing materials (wood veneer, melamine, PVC, laminate and lacquer) form the surface of the door leaf. MDF layers are bonded onto both sides of the door leaf via a press machine. Molded panel door surface is made of HDF boards. Edge band is applied via a special tool. Door case is made of either 3 layers of laminated MDF boards (36 mm thick in total) or 2 layers of MDF boards combined with a wood panel (namely the "sandwich panel" of 42 mm thickness). Moldings are fabricated in three different sizes: 9-12-18 mm (MDF sheet thickness). The case set and moldings are treated with a finishing material in order to match the door leaf.