Thermo vacuum press. Thermo vacuum press for pvc film lamination

The main equipment for the production of MDF facades in PVC film is a thermo-vacuum press.A huge number of presses with a wide variety of technical characteristics are presented on the Russian market today.Therefore, before purchasing, you should ask a few questions in order to correctly answer the main one - how to choose a vacuum press for MDF facades.

The size of the working surface of the vacuum press for MDF facades

When choosing the size of the press worktable, you should take into account the estimated production volume and the range of products from MDF. Manufacturers of thermo-vacuum presses for the production of MDF facades offer equipment with a working surface from 1150× 1090 mm, such as a membrane vacuum press for MDF curved facades from the company "New Technologies", Penza. The maximum size of the working table of the vacuum press for facing MDF facades currently boasts Latvian equipment VP -4000, from the company ISTRA-A (Latvia), with a table 4000× 1400 mm.

Please note that the standard roll width of PVC films for vacuum pressing is 1400 mm. Several European companies offer films in 1420 and 1450 mm widths. However, the main manufacturers of equipment for membrane vacuum pressing are focused on the 1400 mm standard.

In addition, for continuous streaming production of MDF facades, some developers offer membrane-vacuum presses with 2-3 working tables, such as the company "Master PRO" in Moscow. A movable heating carriage, moving freely over the working surfaces, provides alternate heating of the PVC film. A table for facing radius facades can be included in the structure of the vacuum press.

Construction of a vacuum press for MDF facades and its dimensions

With a shortage of working space in the furniture shop, a natural question will be the size of the vacuum press for the production of MDF facades and the area it occupies. But we must not forget about the convenience of equipment maintenance. Here it is necessary to understand the constructive solutions for the location of the working table and the heating module offered by the manufacturers of vacuum presses.

The main manufacturers offer the following design options for a membrane vacuum press:

· With a movable heating carriage on rail guides. This design of the vacuum press allows you to lay out MDF facades from 3 sides.

· Vacuum press for MDF facades with a lifting thermal module on hinged fasteners. The effectiveness of this design lies in saving the working space of the furniture workshop. However, it becomes more difficult to lay the parts and stretch the PVC film.

· With a pull-out table for loading parts made of MDF and PVC foil, such as the vacuum press for MDF facade cladding MTA-2500. Ideal for small furniture production, as it fits compactly in any corner of the workshop.

· The greatest efficiency in saving workshop space and ease of maintenance is possessed by membrane-vacuum machines with vertical pneumatic or hydraulic lifting of the heating module, such as a VPF-2 vacuum press from a Latvian manufacturer, or an Italian PM ORMA press, which, among other things, allows products to be coated with 2 sides.

Features of the complete set of membrane vacuum presses for the manufacture of MDF facades

1. Heating module of the membrane vacuum press ... At the current level of development, manufacturers of vacuum presses for facing MDF facades in PVC film use quartz-halogen thermal heaters, which provide rapid heating with minimal energy consumption. In other embodiments, infrared lamps can be used. Some manufacturers of membrane vacuum presses use hot air blowing through heating elements for heating to prevent uneven heating on the membrane surface. In addition, additional thermal equipment for table heating can be installed on the vacuum press. Chinese machine tool manufacturers heat the PVC film by pumping hot air underneath it.

2. Automation of the process of facing MDF facades in PVC film ... Vacuum presses equipped with automation systems have proven themselves well in continuous and continuous furniture production. Human participation is reduced only to laying the details of the MDF facades on the desktop and then cutting off the excess PVC film. However, in small businesses that work with a wide range of PVC films on a daily basis, it is easier to perform the cladding process by hand, "by eye".

3. Silicone, rubber or rubber membrane ... Most manufacturers supply a silicone membrane with high heat resistance and elasticity to the vacuum press for MDF facades. With the help of a silicone membrane, some technological operations are carried out for gluing various materials, giving them a curved shape according to a template, as well as for the rational use of PVC film with small bookmark volumes. In some designs of vacuum presses, the silicone membrane is fixed on a special frame, which makes it more convenient to use. In other cases, the process of cladding MDF facades in PVC film is based directly on the use of a silicone membrane, and it is an integral part of the equipment.

4. Vacuum pump... As a rule, modern membrane vacuum presses for MDF facades are equipped with oil pumps with the highest performance at the moment. With the small size of the vacuum press table and short pressing times, they can be used oil-free dry pumps with lower performance. As a budget option, the membrane vacuum press can be installed water ring pump VVN... With significant dimensions of the working table of the vacuum press, the vacuum pump can be supplemented with a receiver. Some machine tool builders combine vacuum supply with high pressure counter-supply, so a compressor may be required as part of the equipment.

5. Dividing frame ... It is used when dividing the working table of a membrane-vacuum press for the use of two types of film at the same time or one, in combination with a silicone membrane, for the rational use of PVC film with a small number of products.

6. Additional work table ... At large factories of MDF furniture facades in PVC film, the installation of one additional work table allows increasing the productivity of the membrane vacuum press and, accordingly, the output by 1.5 times or more.

7. Diaphragm vacuum press control panel ... When pressing MDF facades "in manual" mode, as a rule, two buttons are used, which include heating and a vacuum pump, as well as a valve that regulates the vacuum supply rate. More powerful and more automated equipment requires equipping with an appropriate control panel.

8. Possibility of manufacturing radius (curved) MDF facades ... In view of the design features, some membrane vacuum presses do not allow the production of radius MDF facades and their cladding in PVC film. On the other hand, as, for example, the company "Master PRO" in Moscow, machine tool builders have taken care of this option by supplementing their equipment with additional devices.

9. Unwinding devices ... Also with manual or pneumatic cutting of PVC film. Such equipment can significantly increase the productivity of the vacuum press at large production volumes.

10. Anti-static brushes ... Allows you to remove static charge from the PVC film to facilitate its cleaning and eliminate the adhesion of debris on its surface before feeding to the vacuum press. They are installed in order to improve the quality of manufacturing of MDF facades and other products.

11. Support system... Special supports, including magnetic ones, are used as a substrate when laying MDF facades on the working table of a vacuum press. Some manufacturers have even taken care of such "little things".

12. Press for briquetting waste from PVC film, devices for repairing tears and damages on a silicone membrane, mobile stands for storing rolls of PVC film - all this may not come with a membrane vacuum press for MDF facades, but it is often offered by the manufacturer as additional equipment, such as, for example, by the German designers of vacuum presses BR 2600, the Wemhoener company. Such devices make the production of MDF facades more convenient and efficient.

Before you finally decide and choose a vacuum press for MDF facades, you should also study the price range, the availability of options for installing and setting up equipment, training personnel, and further warranty and service.

Description

Vacuum presses TVP-2500 S and TVP-2500 D are designed for small and compact workshops engaged in the production of furniture using MDF facades, enterprises engaged in the production of metal doors, carpentry industries. Vacuum presses are designed for cladding various parts with complex three-dimensional and two-dimensional profiles with PVC films, veneer, door linings and MDF platbands, MDF facades, biconcave facades (curved facades). The equipment combines convenience, ease of use and maintainability. The equipment is adapted to work with PVC films made in Germany, Italy, China, Korea, etc.

Additionally

Vacuum press TVP-2500D with two working tables - this modification allows you to perform two operations at once: pressing and laying out blanks. The cover of the press has a sliding type due to which there is a small loss of heated air between the heating lamps and the film.

Vacuum press capabilities

Work with various PVC films with a thickness of 0.1 mm to 1.0 mm, including high-gloss PVC films.
Bonding, shaping products using a membrane, with or without heating
Finishing with PVC films: MDF facades, countertops, door panels, decorative MDF linens without a membrane, kitchen facades.
When using a membrane - facing with natural veneer and lamination with finishing decorative coatings, laminating chipboard and fiberboard with plastics.
Automatic maintenance of the set temperature of the heated plate within a wide range with high accuracy.
Heater performance indication, equipment condition monitoring.
High productivity of models with two working tables allows using the vacuum press in industries with different types of equipment.

Equipment

Thermo-vacuum press 2500С, vacuum station, a set of connecting wires.

Contact the seller

Technical characteristics of vacuum presses Technical characteristics of TVP-2500 S TVP-2500 D Power consumption of the heating system, kW 20 20 Power consumption of the vacuum system, kW / h 2.8 2x2.8 Power consumption when the operating temperature is reached, kW / h 22.8 25 , 6 Pressing pressure, kg / mm? 8.5 - 9.0 8.5 - 9.0 Temperature range, ° С 0 - 200 0 - 200 Length of the working table, mm 2500 2x2500 Width of the working table (to be determined when ordering), mm 1400 1400 Useful area of ​​the working table, m ? 3.5 7 Length of PVC film when pressing on a full table, mm 2500 2500 Maximum height of the pressed part, mm 50 50 Width of the working table (to be determined when ordering), mm 1400 1400 Time of heating the working table before starting work, min not used. not used Pressing time, min with PVC films 0.3 mm 1 - 2 1 - 2 high-gloss PVC films 0.75 mm 2 - 4 2 - 4 veneers with a membrane 5 - 7 5 - 7 plastic with a membrane depending on the type of adhesive used Machine assembly time, h 2 - 4 2 - 4 Temperature adjustment for the type of film manual Manual adjustment of the vacuum supply yes Type of heating elements KGT KGT Dimensions (LxWxH), mm 5500x1530x1300 8000x1530x1300 Weight, kg 800 1300

Thermal vacuum press for laminating with PVC film

The process, which is called vacuum pressing, is a work in which a uniformly distributed pressure presses the hot film against the workpieces prepared on the work table. In this case, the temperature that the film receives contributes to the activation and strengthening of the adhesive layer.

Thus, the technology of vacuum pressing can safely cover the most complex and deep profiles of molded products (as well as details of the facade interior) with polyethylene film (PVC). Thanks to this technology, we are able to produce continuous profile lines, and even supplement products with rounded shapes. As a result, the surfaces of products become more wear-resistant, and the service life of the product increases significantly.

There is also the possibility of 3D lamination of facades. PVC film, as soon as it is heated, becomes very plastic and takes the required shape. As soon as it cools down, the form taken before is retained. Facade lamination equipment is based on this type.

What kind of press are there?

- Vacuum presses, our company has developed

- Overpressure presses, our company can make this type of press

Differences in price and design:

Thermal vacuum presses are more common and cheaper. They are easier to operate.

Overpressure presses are more complex and expensive.

Both of these presses have the option of additional equipment with a membrane to be able to press porous materials or veneer, and for lamination with PVC film, the membrane is practically not used.

Comparison of pressure in a vacuum press and a press with overpressure:

Overpressure presses are capable of pressing parts at a pressure of 1 - 8 kg per square centimeter, while vacuum presses can produce a pressure of no more than 0.8-0.95 kg per square centimeter. However, it should be noted that in practice, pressure up to 1 kg is sufficient for most lamination procedures. The only exception is covering complex parts with veneer. With a material such as veneer, the recommended pressure should be at least 3-7 kg per square centimeter (in this case, a press with overpressure would be the best solution).

How does a vacuum press work?

The design of the press mainly consists of a box, a frame with a table on which the workpieces are placed. There is also a heater used to heat the film and a vacuum system. It provides equal pressure on the PVC film by applying atmospheric pressure or by injecting excess pressure.

What the process of lamination with PVC film looks like using a vacuum press:

Lamination process with PVC film of MDF furniture facade

1. An adhesive layer is applied to the workpieces. Further, with the help of special pads, the workpiece is laid out on the plane of the desktop. The linings have the size of the part, which ensures full stretching of the film, and the PVC better fits the product. For the same purpose, special technological deviations (gaps) are used.

The figure shows a work table on which the workpieces are placed, which, in turn, lie on the pads

2. A PVC-film is fixed over the entire surface of the table (special clips are used). Further, it is compressed along the relief of the workpieces due to the injection of vacuum under the film (in vacuum presses). In rare cases, a membrane is used.

3. Now it is time to heat the film. With different designs of presses, various options for the principles of placing the table and the heater itself are possible. In some cases, a table is a movable element, in some it is a heater.
According to the principle of the press device, they are distinguished into contact and non-contact. In the first case, the PVC film is in direct contact with the heating element. In the non-contact model of the press, the film, accordingly, does not touch the heater. Another name for this type of heater is infrared.
Ideally, a uniform heating of the film to the desired temperature should be obtained (each PVC film has its own heating rate). In membrane presses, the heating temperature can be from 140 degrees Celsius to 160 degrees.

The heating box of the press is equipped with KGT-1000 lamps, placed in a certain order for uniform heating

4. When the stage of heating the film is passed, a new one begins - evacuation. Or, in other words, the stage of pressing the product. The process is the removal of air between the plane of the desktop and the PVC film stretched over it. Atmospheric pressure begins to act, which with force presses the film heated to the required temperature to the surface of the workpieces. At the same time, the heating temperature forces the adhesive base to become active.

Workpieces in the process of evacuation continue to be heated (overheating occurs)

After lamination is completed, we raise the heating box and check the quality of the products received.

5. Upon completion of all stages, the cooled workpiece is carefully cut along the contour and freed from excess PVC film.
Now all that remains is to enjoy the result of the work performed.

Video №1 Lamination with PVC film on a vacuum press

This machine is mainly used as woodworking equipment. Its principle of operation is to cover wooden surfaces with PVC film or veneer. The main consumer of this device is furniture factories. This is due to the fact that the lamination process using a vacuum press significantly speeds up the productivity of the factory and makes it possible to create an exclusive design of furniture surfaces. In addition, the machine can be used to decorate bent interior items. This function has become available due to the improvement of the press and the expansion of its capabilities. The same possibilities make it possible to use carbon films and fiberglass to cover the surfaces of water and land transport. Such presses are called specific.

In this article we will look at:

• vacuum press
• membrane vacuum presses
• vacuum press device
• working principle of the vacuum press
• vacuum press table
• thermo vacuum press
• vacuum press principle
• production of membrane vacuum presses
• vacuum heat press for sublimation
• 3d vacuum heat press
• vacuum heat press grafalex st 420
• membrane vacuum press master compact
• vacuum forming machine
• vacuum packing machine
• lh 250 vacuum casting machine
• plastic mold machine vacuum
• cnc machine with vacuum table

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The coating of the surface with the processing material is very high quality and such a surface serves for a long time. And the technology itself is very simple and consists in the simultaneous interaction of vacuum technology and heating of the working surface. The cost of the machine does not allow many factories to introduce it into their workshop, but if you still buy it, then the payback will not be long in coming. The reason for this is the savings on the purchase of finished materials for cabinet furniture (for example), since purchasing a bare chipboard and processing it yourself on a vacuum press will be much cheaper than buying an already laminated pressed board.

Vacuum presses are:

• Book pressing. The top cover of the unit opens and closes like a book. There are covers with manual and automatic drive;
• Conveyor pressing. A table equipped with a conveyor belt that feeds the processed material to the working body of the press. These models have a design with one and two workpiece tables;

Vacuum press vp 3000

A vacuum press is used to transfer an image or lettering to any surface of a product using sublimation. Sublimation is the process of printing under high temperature any image that is pre-printed on special paper to display it on the surface of the object being processed. The final image can have both black and white appearance and a color palette, including ultraviolet inks, which greatly expands the possibilities of using a vacuum heat press. Due to the ability to transfer an image from paper to an object, such a unit is called a 3D press.

For the rational use of equipment, there are several features that save time and money in the event of a marriage. It's about temperature control. Depending on the material from which the object for processing is made, the temperature of the working membrane of the heat press must be different. If the applied picture is not heated, then the image will turn out to be pale and vulnerable to mechanical stress. If overheated, the picture will become blurred and the contrast of colors will change, the durability will also leave much to be desired.

What are the vacuum heat presses:

• Household. Compact body designed to handle small items at low productivity rates. Although, modern models are quite multifunctional and are equipped with processors that control the temperature regime, which speeds up the crimping process;

Household heat press

• Industrial. They have a large working area and are able to apply 3D drawings at high speed;

Thermal vacuum press suitcase mvp 2500s

This type of press differs from a conventional vacuum press in that it is intended mainly for covering wood and other surfaces with veneer. The membrane is an additional equipment that contributes to a tighter adhesion of the material applied to the surface to be treated, thereby creating a large pressure in conjunction with an increased temperature, which makes it possible to tighten the workpieces with such a rigid material as veneer. In addition, membrane presses are widely used to apply films and similar raw materials to the embossed surfaces of doors, columns, cornices, interior elements, structural facade slabs and others.

Membrane vacuum press

Special equipment designed to create plastic forms, packages, figures and other items. For a certain product, an appropriate machine is required, since it all depends on the dimensions, density of the plastic and the option for passing the process.

The principle of operation of vacuum machines is the same in almost all modifications. A blank is placed inside the vacuum chamber (it is made of wood, gypsum, expanded polystyrene, rubber, metal, etc.). Also, raw material (plastic) is placed in the chamber, which becomes elastic under the influence of temperature and, when stretched, can increase its area up to 10 times. A pump is connected to the working chamber, which creates a vacuum at the right time, which ensures that the plastic adheres to the workpiece, completely repeating its shape. The thicker the plastic should be for the finished product, the more powerful the pump is required to create a vacuum.

Vacuum forming machine

Vacuum technology for food, medicine, precious metals and banknotes. With the help of the work of vacuum packing machines, the inhibition of the disintegration of food molecules and their freshness for more than 20 days is achieved. The same principle is used to pack tablets and banknotes to avoid moisture and dirt.

Vacuum packing machine

The packaging machines have different variations of the evacuation design. So, they are divided into:

• One- and two-strip. The edges of the packaging are sealed from one or both sides;
• One- and two-chambered. Packaging can take place both in individual form and in paired with another type of product;
• Household and industrial. The first modification is used at home, in catering processes and mini-factories. The second one is used at enterprises specializing in vacuum filling in large volumes;

The purpose of vacuum forming machines is to form relief shapes from plastic, polymer or PVC sheets, with a depth of depressions or bulges of up to 500 mm. The body of these units is designed for large-sized products, which allows you to form a wide range of finished products. The peculiarity of vacuum forming machines is that due to the zonal heating of infrared heating elements (each zone is divided into separate sectors of 0.2 m 2), it is possible to simultaneously carry out the formation of different complexity and with different depth of relief on one sheet of raw materials. The whole process takes place automatically, after the operator has configured all the parameters using the software.

Vacuum casting machine
Plastic mold

This attachment is an optional equipment for CNC milling machines. As standard, the milling machine has special bolt clamps for the workpiece, but they exert strong point pressure on the material, which can damage it. To avoid such nuances, a vacuum table was created, which works on the principle of a suction cup, pulling the workpiece towards itself with the help of a compressor, which pumps out air between the table surface and the workpiece. Thus, there is a reliable fixation of the material for further milling.

Cnc machine with vacuum table