A vacuum press is a piece of equipment that can be used to give various materials the desired shape. Its design, as a rule, includes a table, a clamping surface, a heating element, and a pump. It is possible to use a membrane, which is necessary for applying a thin coating. The vacuum press is used in various industries.

Navigation:

Vacuum forming is the same vacuum pressing process, but using softer materials such as plastic. With the help of vacuum forming equipment, car dashboards, toys, packaging, mugs and other plastic products are made.

vacuum pressing

Vacuum pressing is a process in which curved glued furniture and interior elements are created and lined. Today, there are a huge number of installations with different capabilities. There are universal installations that are able to work with film or natural material.

During the pressing process, various tables can be used that perform their functions. If necessary, they are equipped with thermal elements that enhance the pressing effect. Installations differ in the level of automation. In factories with conveyor production, fully automated vacuum presses are used.

Vacuum pressing may differ:

• according to the design of the heating elements;
• the method of moving the heating elements;
• type of fastening of a removable membrane;
• type of module for heating;
• applied vacuum pumps;

The thermal vacuum press is one of the most frequently encountered units in vacuum pressing. It copes with the cladding of the facade of furniture with PVR film, doors with veneer material, as well as the manufacture of curved glued products that have dimensions not exceeding the dimensions of the press.

Often a system is used in which a vacuum bag is present. This is due to the strong different properties of materials, which can be natural and artificial. In addition, different temperatures can be applied when working with PVC film. The operation is especially important when performing 3D pressing, when it is necessary to ensure the elasticity of the film.

Vacuum forming plastic

Vacuum molding of plastic is a process in which products and thermoplastics are manufactured. These are acrylic, polyester, PVC and other polymers. Vacuum is used to change their shape, as well as high temperature. Vacuum forming, as a rule, is a mass production of products. At the same time, there are small installations with which you can create a small souvenir or other similar products.

Vacuum molding of plastic is actively used:

• when creating elements of outdoor advertising: logos, three-dimensional letters and other elements;
• in the manufacture of equipment for trade: front and side panels, shelves, trays, bathtubs, covers and other elements.
• when creating car elements: moldings, plastic panel parts, toolbox boxes and many other products;
• when creating household products: aquarium covers, garbage containers;
• when creating interior elements: figurines, furniture elements;
• when creating components of medical installations: consoles, containers, baths;

Objects made by vacuum molding are present in large quantities in the life of every person. This technique is one of the most ambitious to date and is used in almost all industries.

Membrane vacuum press

The membrane vacuum press consists of the same elements as other types of plants, with the exception of one - they have a membrane. The manufacture of curved products using a vacuum press looks quite simple from the outside. To do this, you need to place the object on a special surface of the table, taking into account that glue with a film will already be applied on it, and close it. Next comes the setting of the necessary temperature and time parameters, which the specialist assigned to perform the operation should know. Often, a membrane is used for greater density.

Membrane vacuum press can also work in cold mode. In this case, a special bag is used, which will play a decisive role in quality. The properties of the material from which the bag is made determine how well the operation will be performed. As a rule, bag manufacturers make sure that the products are durable, elastic, and transparent.

It is important to use professional bags that can be used repeatedly. They will not tear under the influence of temperature and in a vacuum. With their help, you can perform various pressing work, because they are not afraid of heavy loads.

Vacuum press for MDF facades

A thermal vacuum press is the machine that works best for an MDF facade. In our country, there are a large number of installations of this type, capable of performing tasks of varying complexity. The choice of a vacuum press for an MDF facade is always a difficult process, since it is easy to get confused in the characteristics and other key indicators.

The first thing you should pay attention to when choosing a press for facades is the size of the installation. There is nothing complicated here, the main thing is that the workpieces can be easily placed in length, width and thickness. It is advisable to make some gaps, since it will simply be impossible to increase the equipment in size.

Next comes the construction of the working installation. The optimal choice would be a movable heating carriage mounted on rail guides. Using it, you can process MDF facades from all sides.

Equally important is the choice of thermal module. The best option would be a lifting temomodul, which is mounted on hinges. This design is effective because it saves working space in production. At the same time, laying parts and stretching the foam becomes much more difficult.

Today, many enterprises are switching to membrane-vacuum plants, which have vertical pneumatic or hydraulic lifting of the heating module.

Vacuum pump for vacuum press

Vacuum pump for vacuum press is one of the main elements. The performance of the vacuum press depends on how high the performance indicators will be, and what maximum residual pressure the installation can create in the equipment. Naturally, the heating elements must match the characteristics of the speed, otherwise all the technical capabilities of the pump will be used in vain.

For a vacuum pump, most often, vane vacuum and liquid ring vacuum pumps are used. The units have high technical characteristics and are excellent for vacuuming operations in pressing equipment.

The main parameters for the selection of a vacuum pump for a vacuum press can be considered:

• the possibility of using the unit in high temperature conditions;
• the principle of operation of the installation and the materials used for lubrication;
• parameters of the created pressure and speed;
• cleanliness of the operation;
• dimensions;
• noise and vibration;

Rotary vane vacuum pump

The rotary vane pump is a versatile means of creating a vacuum, so it is not surprising that it can be used in a wide variety of applications where low, medium or high vacuum is needed, including pressing equipment.

To date, there are many different modifications of models of this type. At the same time, the main distinguishing feature of vane vacuum pumps of similar performance is the fact of using or not using vacuum oil.

Oil vacuum units have higher productivity, since they have practically no gaps between the main moving structural elements. They are sealed with vacuum oil. At the same time, vacuum oil is able to evaporate during operation, thereby polluting the pumped air. This fact makes "dry" pumps more preferable for work in a vacuum press.

Units using removable graphite plates are currently inferior in high pressure capability, but it is likely only a matter of time before they become more popular than oil models.

Liquid ring vacuum pump for press

The water ring vacuum pump is quite well suited for performing vacuum in pressing equipment. It, despite the fact that it has a relatively low performance, is a universal means of pumping gases of various types.

A liquid ring vacuum pump uses water as the working fluid. It contributes to the fact that the installation does not overheat during operation and is lubricated independently. At the same time, contaminated gases, in contact with water at high speed and high pressure, begin to be purified. This makes it an excellent choice for a vacuum press where outgassing is present.

The main equipment for the production of MDF facades in PVC film is a thermal vacuum press.Today, a huge number of presses with a wide variety of technical characteristics are presented on the Russian market.Therefore, before purchasing, you should ask yourself 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 working table of the press, the expected volume of production and the range of MDF products should be taken into account. Manufacturers of thermal vacuum presses for the manufacture of MDF facades offer equipment with a working surface of 1150× 1090 mm, such as, for example, a membrane-vacuum press for bent MDF facades from the New Technologies company, Penza. The maximum size of the working table of a vacuum press for facing MDF facades can currently boast of Latvian equipment VP -4000, from ISTRA-A (Latvia), with table 4000× 1400 mm.

Please note that the standard width of PVC film rolls for vacuum pressing is 1400 mm. Some European companies offer films with a width of 1420 and 1450 mm. However, the main manufacturers of equipment for membrane vacuum pressing are oriented towards the 1400 mm standard.

In addition, for continuous flow production of MDF facades, some developers offer membrane-vacuum presses with 2-3 working tables, such as Master PRO, Moscow. The movable heating carriage, moving freely over the working surfaces, provides alternate heating of the PVC film. The structure of the vacuum press can include a table for cladding curved facades.

The design of a vacuum press for MDF facades and its dimensions

With a shortage of working space in the furniture workshop, the size of the vacuum press for the production of MDF facades and the area it occupies will become a natural question. But we should not forget about the convenience of equipment maintenance. Here you should understand the design solutions for the location of the working table and the heating module offered by manufacturers of vacuum presses.

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

· With 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 hinged lifting thermal module. The effectiveness of this design lies in saving the working space of the furniture workshop. However, laying down parts and stretching the PVC film becomes more difficult.

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

· The most effective in terms of workshop space saving and serviceability are membrane-vacuum machines with vertical pneumatic or hydraulic lifting of the heating module, such as the VPF-2 vacuum press from a Latvian manufacturer, or the Italian PM ORMA press, which, among other things, makes it possible to produce facing products with 2 -x sides.

Features of the configuration 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 cladding MDF facades in PVC film use quartz-halogen thermal heaters that provide fast heating with minimal energy consumption. In other embodiments, infrared lamps may be used. Some manufacturers of membrane-vacuum presses use hot air for heating, supplied through heating elements, to prevent uneven heating on the membrane surface. In addition, additional thermal equipment for heating the table can be installed on the vacuum press. Chinese machine tool manufacturers heat 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 in-line and continuous furniture production. Human participation is reduced only to laying the details of the MDF facades on the desktop and then trimming the excess PVC film. However, in small businesses that work daily with a wide range of PVC films, it is easier to carry out the cladding process manually, “by eye”.

3. Silicone, rubber or rubber membrane . Most manufacturers supply a vacuum press for MDF facades with silicone membrane, which has high heat resistance and elasticity. With the help of a silicone membrane, some technological operations are performed for gluing various materials, giving them a curved shape according to a pattern, as well as for the rational use of PVC film with small bookmark volumes. In some designs of vacuum presses, the silicone membrane is mounted 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 installed oil pumps, which currently have the highest performance. With a small size of the vacuum press table and a short pressing time, oil-free "dry" pumps with lower performance. As a budget option, a membrane-vacuum press can be installed VVN water ring pump. With a significant size of the working table of the vacuum press, the vacuum pump can be supplemented with a receiver. Some machine tool builders combine a vacuum supply with a counter-supply of high pressure, so a compressor may be required with the equipment.

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

6. Additional desktop . In large-scale production of MDF furniture facades in PVC film, the installation of one additional working table allows increasing the productivity of the membrane-vacuum press and, accordingly, the output by 1.5 times or more.

7. Membrane vacuum press control panel . When crimping MDF facades "in manual" mode, as a rule, two buttons are used to turn on the heating and vacuum pump, as well as a valve that regulates the vacuum supply rate. More powerful and automated equipment requires 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 MDF radius facades and their cladding in PVC film. On the other hand, as for example the Master PRO company in Moscow, machine tool builders took care of this option by adding additional devices to their equipment.

9. Unwinders . Including with manual or pneumatic cutting of PVC film. Such equipment can significantly increase the productivity of a vacuum press with large production volumes.

10. Antistatic brushes . Allows to remove a static charge from a PVC film to facilitate its cleaning and eliminate debris sticking to its surface before feeding it to a vacuum press. They are installed in order to improve the quality of the manufacture 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 even took care of such a “little thing”.

12. PVC Film Waste Briquetting Press, Silicone Membrane Tears and Damage Repair Devices, PVC Film Roll Storage Movable Racks - all this may not be included with a membrane-vacuum press for MDF facades, however, it is often offered by the manufacturer as additional equipment, such as, for example, German designers of vacuum presses BR 2600, Wemhoener. 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 installation and adjustment of equipment, staff training, 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. Vacuum presses are designed for lining various parts with complex three-dimensional and two-dimensional profiles with PVC films, veneer, door linings and MDF architraves, MDF facades, biconcave facades (curved facades). The equipment combines convenience, ease of use and maintainability. The equipment is adapted to work with PVC films produced 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.

Possibilities of a vacuum press

Work with various PVC films with a thickness of 0.1 mm to 1.0 mm, including high-gloss PVC films.
Gluing, shaping products using a membrane, with or without heating
Finishing with PVC films: MDF facades, countertops, door panels, decorative MDF panels without a membrane, kitchen facades.
When using a membrane - facing with natural veneer and laminating with finishing decorative coatings, laminating with chipboard and fiberboard plastics.
Automatic maintenance of the set temperature of the heated plate within a wide range with great accuracy.
Indication of the health of the heaters, control of the state of the equipment.
The high performance of models with two working tables allows the use of a vacuum press in industries with different types of equipment.

Equipment

Thermal vacuum press 2500C, vacuum station, set of connecting wires.

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 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 2х2500 Width of the working table (determined when ordering), mm 1400 1400 Useful area of ​​the working table, m ? 3.5 7 Length of PVC film when pressed on a full table, mm 2500 2500 Maximum height of the pressed part, mm 50 50 Width of the working table (determined when ordering), mm 1400 1400 Time of heating the working table before starting work, min. not used Pressing time, min with PVC films 0.3 mm 1 - 2 1 - 2 with high-gloss PVC films 0.75 mm 2 - 4 2 - 4 veneers with a membrane 5 - 7 5 - 7 plastics with a membrane depending on the type of glue used Machine assembly time, h 2 - 4 2 - 4 Temperature setting according to film type manual Manual vacuum supply adjustment yes

Thermal vacuum ( membrane-vacuum ) universal press "PV-1425" designed for the manufacture and hot cladding of MDF furniture fronts with decorative PVC films, and when using a membrane for the production of curved glued products (curved furniture fronts) and cladding with other materials (veneer, CPL, HPL, PET, PP, polyester, etc.).

We sell 4 types of vacuum presses model "PV-1425":

• Vacuum press with a hinged cover of the thermomodule of the "Suitcase" type.
• Vacuum press with pneumatic lifting mechanism of thermomodule.
• Vacuum press type "Kickback" - the thermomodule rolls back to the side.
• Vacuum press with 2 tables.

It is possible to manufacture a vacuum press according to the individual characteristics of the Customer.

Vacuum press "PV-1425" has a more affordable price compared to analogues!

Description

The vacuum press "PV-1425" is equipped with modern quartz-halogen thermal heaters with a total power of 20 kW, so it provides uniform heating of the entire working surface in a matter of seconds. The film is warmed up so quickly that in practice the performance of vacuum presses "P V-1425" is limited only by the speed with which the shop workers lay the facade blanks on the work tables. Compared to outdated thermal vacuum presses on spiral heating elements, vacuum presses are able to work even with high-gloss films, consuming many times less electricity.

All “P V–1425” membrane-vacuum presses are favorably distinguished from analogue models by the use of an electronic soft-start system for heaters and the presence of automatic and manual stepless control of heating modes, which expands the functions of vacuum presses and extends the service life of heating elements.

Carefully selected mutual arrangement of quartz-halogen heaters and the function of stepless smooth adjustment of the heating power allows the vacuum press to qualitatively and quickly attach any kind of PVC films: matte and high-gloss, including especially stubborn, difficult-to-work PVC films made in Korea and China with a low content of plasticizers.

Due to the high performance of the vacuum system (1570 liters per minute), the thermal vacuum press "PV-1425" can perform all its functions without receivers. Convenient ergonomic clamps of the clamping frame of the working table of the vacuum press significantly speed up the process of laying out the blanks of furniture facades and MDF door linings. The cover of the thermal module of the vacuum press "P V-1425" makes it possible to bend radius MDF facades using a bent-glued technology using a silicone or rubber membrane: concave, concave, concave-curved in one tab.

The maximum height of the workpiece (the chord of the radius facade), with which the vacuum press works, is 350 mm. A silicone membrane or a rubber membrane, purchased from us separately, significantly expands the capabilities of a membrane-vacuum press, although it is important to remember that facade cladding with PVC films on PV-1425 vacuum presses is made without a membrane.

With the help of a vacuum membrane, the “P V-1425” heat press can laminate surfaces with textured finishing materials, veneer them with paper-laminated plastic, natural veneer and acrylic. Laminating MDF furniture fronts on the reverse side to match the PVC film on the front side can significantly increase the cost of facades while reducing their cost.

Performance features

Each furniture or door production has its own individual characteristics: a certain set of standard sizes of flat facades or door panels, radii and chord heights of curved facades, and so on. Therefore, sometimes manufacturers impose specific requirements on the equipment ordered for the production of furniture or doors.

The manufacturer, at the request of its customers, produces new thermal vacuum presses "PV-1425" with different from the standard dimensions of the working table and the height of the thermomodule cover. For example, an increase in the length of the desktop allows you to clad one more row of facades in one tab or to produce doors for cabinets of increased height. The height of the thermomodule cover determines the distance from the heaters to the desktop surface, which means the maximum chord height of the bent-glued facade workpiece, which can be coated with PVC film in a vacuum press.

Vacuum presses "P V-1425" with an increased height of the thermal module work with radius facades with a chord height of 350, 450 mm. Of course, such changes in the design of the vacuum press require the calculation of the power of the heaters, and the time of hot pressing for high-quality lining with PVC film has to be increased.

Warranty and service

The equipment "vacuum press" has a warranty period of 12 months. The warranty does not cover optional accessories supplied with the equipment. In the event of an unrecoverable defect in the equipment, the heat press is subject to prompt replacement, and all transportation costs associated with the replacement of equipment, our company assumes.

In the event of failure of one or more units of this equipment (for example, a vacuum pump), our company will arrange for the immediate delivery of the part to the client and its replacement by our specialist, or the replacement is carried out by the client on his own after consultation with our service department. Our company also guarantees, at the request of the client, prompt delivery to any city in the Russian Federation of any components, parts and accessories used for a vacuum press.

If the equipment fails during the warranty period or after it, you should immediately contact us for troubleshooting or replacement of the equipment by phone or e-mail.

To achieve optimal performance of the heat press you have purchased, you must follow all instructions and manuals for its operation as much as possible. Use this equipment only for its intended purpose. The warranty period begins from the moment the equipment is handed over to the buyer. We will not make warranty repairs or replacements if the failure is found to be due to external damage or misuse of the product and/or failure to follow the instructions and user manual.

The warranty does not cover any modifications to this equipment or parts thereof. We undertake to repair or replace the heat press as described above or as permitted by applicable law. Any labor and associated repair costs for equipment not covered by this warranty will be billed separately.

We do not accept any liability for direct or indirect damages, including loss of profits, lost profits, even if the company has been advised of the possibility of such damages. Liability for any damage to the buyer or other party cannot exceed the price of the product.

Thermal Vacuum Press for Laminating PVC Film

The process, which is called vacuum pressing, is a work in which evenly distributed pressure presses the hot film onto the workpieces prepared on the worktable. At the same time, the temperature that the film receives contributes to the activation and strengthening of the adhesive layer.

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

There is also the possibility of 3D lamination of facades. PVC film, as soon as it is heated, becomes very plastic and takes the necessary shape. As soon as it cools down, the form taken before is preserved. On this type, equipment for laminating facades is based.

What are the presses?

- Vacuum presses, our company has developed

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

Differences in price and design:

Thermal vacuum presses are more common and have a low cost. They are easier to use.

Overpressure presses are a more complex and expensive design.

Both of these presses can be additionally equipped with a membrane in order to be able to press porous materials or veneer, and the membrane is practically not used for laminating with PVC film.

Pressure comparison between a vacuum press and an overpressure press:

Overpressure presses are capable of compressing 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 enough for most lamination manipulations. An exception can only be the coating of 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, an overpressure press is 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 blanks are placed. There is also a heater used to heat the film and a vacuum system. It provides an equivalent pressure on the PVC film, applying atmospheric pressure or pumping excess pressure.

How does the process of laminating with PVC film using a vacuum press look like:

The process of laminating the furniture facade from MDF with PVC film

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

In the figure, the desktop, on which the workpieces are placed, which in turn lie on the lining

2. A PVC film is fixed over the entire surface of the table (special clamps 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's 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, the moving element is a table, in some cases, 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 press model, the film does not touch the heater. Another name for this type of heater is infrared.
Ideally, uniform heating of the film to the desired temperature should be obtained (each PVC film has its own heating index). 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 film heating stage is completed, a new one begins - vacuuming. Or in another way - 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 desired temperature to the surface of the workpieces. At the same time, the heating temperature causes the adhesive base to become more active.

Workpieces in the process of vacuuming continue to be heated (reheating occurs)

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

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

Video No. 1 Lamination with PVC film on a vacuum press