SK7089Y1 - The interior door - Google Patents

Abstract

The interior doors to metal door lining, with the panel consisting of a frame, side boards and a core. The frame (1) of the door is made of hard plastics material, the core (2) is made of extruded polystyrene, and the side boards (3, 4) are made of ABS copolymer, all of the materials are joined by gluing and pressing.

Description

The technical solution concerns interior doors with metal frames, especially for use in exposed areas.

BACKGROUND OF THE INVENTION

Previously used interior doors with standard metal doorframes consist of a frame construction, which is mostly made of solid spruce prism and filling material, which is standard paper honeycomb, chipboard and the like. The chipboard is then glued and pressed onto the frame from the inside. This semi-product consists of so-called. door leaf. The door is further machined, the rebate is made and it is clad on the outside with the material that forms the final door surface. Natural or artificial materials are used for the cladding. These are called. veneer splice, different types of foils with different types of decors and mechanical resistance, or format board materials used in furniture. The final door surface can also be achieved by surface treatment, spraying. There is a glued edge -1, j. from both the longitudinal sides and from the top. The underside of the door is usually equipped with impregnation. The door is fitted with metal parts - locks and hinges.

When used in exposed areas, such interior doors are not able to withstand atmospheric humidity above 60% and cannot be used in areas where door sanitation, water washing or similar maintenance is required, while retaining the possibility of being fitted into metal frame construction closures. . Such doors tend to be quickly degraded and their frequent replacement increases the cost of operating exposed interiors.

The essence of the technical solution

The above-mentioned disadvantages are eliminated by interior doors with metal frames, consisting of a door with a frame, panel and side panels according to this technical solution, which is based on the fact that the door frame is made of hard plastic material, the frame panel is made of extruded polystyrene and side panels are of acrylonitrile-butadiene-styrene polymer, all materials being joined by pressing and gluing. It is also an object of the invention that the plastic material of the door frame is a material based on extruded integrally puffed profiles of hard modified polystyrene or a composite material based on plastic and filler containing wood fibers or based on hard polyurethane. It is also important that a shaped fold or a shaped fold made of plastic material is glued directly to the door frame directly in the door frame.

The advantage of interior doors made of new materials according to the technical solution lies mainly in the fact that they are intended for common metal doorframes and at the same time they are made of modern waterproof and light-weight materials with low weight and with excellent thermal insulation properties. The combination of these materials into a compact product results in new doors that also resist the action of other non-aggressive consumables, oils and lubricants, disinfectants, detergents, etc. The doors are developed primarily for exposed areas - workshops and services, food processing, health care and social service homes, canteens, slaughterhouses. The interior plastic doors are mainly intended for use in exposed areas with high dustiness, air humidity, for operation requiring maintenance by means of pressure spraying and washing using detergents and disinfectants, degreasers and so on. Doors do not twist, rot, dry and are not absorbent. The door has comfortable thermal insulation properties and low weight. Another indisputable advantage is the favorable price calculation of the product.

BRIEF DESCRIPTION OF THE DRAWINGS

The interior door according to the new technical solution is shown in section in the drawing, where figure 1 represents a section through a door, figure 2 shows a section through a door with a flap formed directly in the frame, figure 3 shows a section through a door with glued shaped flap.

EXAMPLES

The supporting structure of the door is a frame 1, which is made of a hard plastic material. The construction of the frame 1 is rectangular with a reinforcement on hinges and hinges by one crossbeam. Door panel 2 tvo2

SK 7089 r1 consists of two precisely formatted and tightly fitted frames made of extruded polystyrene, known e.g. under the trademark PENOPOL. Extruded polystyrene is characterized by high strength, low bulk density and almost zero absorbency. This construction is only sheathed from the front and back by precisely formatted plates 3, 4 of acrylonitrile-butadiene-styrene polymer material, known by the abbreviation ABS. The molded seam 5.1 is formed directly in the plastic frame 1, after all parts have been pressed and glued, or a molded seam 5.2 of plastic material is glued to the door frame 1.

Pressing with backing is used for the door cladding. All joints are glued with strong glue. The doors are, like the previous ones, fitted with metal parts - locks and hinges, identical for use in standard interior doors. These plastic interior doors can also be fitted with security and panic fittings, self-closing devices, electromagnetic locks and other security components. In these interior doors, glazing replacements can also be solved. The cut-out is worked into the finished door in the usual way instead of the glass sheet is used plexiglass and a frame made of plastic profile is used for polishing. The cutout shall be made in such a way that the door frame is not disturbed.

A number of suitable materials can be used as the hard plastic from which the door frame 1 is made. Preferably, a material based on extruded integrally blown profiles of hard modified polystyrene is used, e.g. plastic market known as Everwood. Another material is a composite material based on plastic and filler containing wood fibers, which is e.g. known as WPC. A suitable semi-finished product for the frame is also a material based on hard polyurethane. It is a material supplied under the PURENIT brand, which is made partly from ground polyurethane recycled material with the addition of polyisocyanurate and the necessary reagents. This product is subsequently pressed to the desired thickness using flat presses, and then grinded as required. All these materials are resistant to chemicals, resistant to high temperatures, humidity, without swelling and cracking, have high compressive strength and excellent thermal insulation properties.

The acrylonitrile-butadiene-styrene polymer (ABS) material is sold under various trade names such as POLYLAC, MAGNUM, CYCOLAC, etc. The acrylonitrile-butadiene-styrene polymer (ABS) sheets are 2 mm thick, with the front door panel format having a different format from that of the rear seam of the door. Acrylonitrile-butadiene-styrene polymer (ABS) has higher impact and notch toughness - especially at minus values, well absorbs impacts and vibrations. The fatigue threshold is relatively low and has higher temperature and shape stability than other styrene plastics.

Industrial usability

Interior doors can be used especially for various operations, acrylonitrile-butadiene styrene polymer (ABS) for the front of the casing and the sash of the door is advantageously used in four basic color lines that directly specify their use: gray color - for cellars and attics and operations, red - for operations such as meat, slaughterhouses, canteens, food, blue - for workshops and services, white - for health operations, social service homes.

Other color shades are used according to specific customer requirements.

PROTECTION REQUIREMENTS

Claims (6)

Interior doors with metal doorframes, with a door consisting of a frame, panels and side panels, characterized in that the door frame (1) is made of hard plastic material, the panel (2) of extruded polystyrene frame and side panel (3) 4) acrylonitrile-butadiene-styrene polymer, wherein all materials are joined by pressing and gluing. Interior door according to claim 1, characterized in that the plastic material of the door frame (1) is a material based on extruded integrally blown profiles of hard modified polystyrene. Interior door according to claim 1, characterized in that the plastic material of the door frame (1) is a composite material based on plastic and a filler containing wood fibers. Interior door according to claim 1, characterized in that the plastic material of the frame (1) is based on hard polyurethane. Interior door according to one of Claims 1 to 3, characterized in that a shaped fold (5.1) is formed directly in the door frame (1). Interior door according to one of Claims 1 to 3, characterized in that a molded seam (5.2) of plastic material is glued to the door frame (1). 1 drawing