HIGH FREQUENCY WELDING MACHINES FOR CHILDREN'S ITEMS

High frequency welding and welding/cutting machines for children's items

The production of items intended for early childhood requires precision, uniformity of workmanship and great attention to the quality of the finished product. High chairs, strollers, prams, changing tables, cots and bouncers are in fact subjected to frequent use and must have carefully assembled coverings, easy-to-clean surfaces and finishes free of irregularities.

The high frequency welding and cutting machines for children's items allow you to work synthetic materials, PVC, PU, polyester and coupled leather, creating precise welding, reliefs, decorative applications and, when required, welding and cutting in the same production cycle.

Bizeta designs and builds HF machines configured on the customer's real production needs, evaluating the type of item, the dimensions of the component, the materials used, the surface to be welded and the production volumes required.

High frequency welding in the production of children's items

High frequency welding, also called HF welding or radio frequency welding, is a process used to join compatible thermoplastic materials through the combined action of electromagnetic energy and pressure.

During the manufacturing cycle, the materials are positioned on the machine table and compressed through a mold. The high frequency field generates heat directly in the affected area, allowing the surfaces to join together along the profile defined by the equipment.

This process allows us to obtain regular, well-defined and repeatable joints, characteristics that are particularly important when producing large quantities of components intended for early childhood.

The quality of the result depends on the correct combination of:

• composition of the material;
• layer thickness;
• effective welding area;
• high frequency power;
• applied pressure;
• welding time;
• cooling time;
• mold geometry.

For this reason, the machine must be chosen starting from the product to be made and not only from the nominal power or external dimensions of the system.

Which baby items can be processed with HF technology

High frequency machines can be used to produce or finish numerous components intended for early childhood.

The main applications include:

• covers for high chairs;
• padding and components for strollers;
• coverings for wheelchairs;
• mats and padding for changing tables;
• cot sides and components;
• covers for bouncers;
• waterproof mats;
• play mats;
• padded protections;
• bags and accessories for transporting children's items;
• decorative inserts, logos and writing in relief.

Each product must be analyzed considering shape, dimensions, number of layers, material, type of finish and desired aesthetic result.

HF machines for high chair coverings

High chair covers must be designed for daily use and must have regular surfaces, well-finished edges and correctly defined padded areas.

High frequency technology can be used to:

• merge multiple layers of material;
• create padded areas;
• create profiles and edges;
• apply localized reinforcements;
• form pockets and passages;
• insert transparent or decorative elements;
• create logos or motifs in relief;
• trim the component with a welding-cutting machine.

Precision in registering the material is fundamental, especially when the covering has prints, decorations or areas that must coincide exactly with the profile of the mold.

Welding of covers for strollers and prams

Strollers and prams can include numerous flexible components, padded or upholstered, made with different materials and assembled through multiple production phases.

HF welders can be used to work:

• seat coverings;
• padded backrests;
• side protections;
• upholstered footrests;
• inserts and decorative panels;
• waterproof components;
• storage pockets;
• flexible covers and protections.

Through a dedicated mold it is possible to obtain precise welding lines, geometric patterns, quilted areas and three-dimensional effects.

When the component needs to be trimmed along the profile, a high frequency welding/cutting machine can integrate welding and cutting in the same cycle, reducing subsequent manual operations.

High frequency machines for changing tables

Changing mats are generally made with padding covered in flexible and easily cleanable materials.

HF welding can be used to join the different edges of the covering, define the padded areas and create contoured edges or profiles.

Depending on the shape of the product, the processing may include:

• welding of the external contour;
• formation of the lateral zones;
• creation of differentiated padded areas;
• application of decorative elements;
• creation of embossed logos;
• welding of inserts or reinforcements;
• possible shearing of excess material.

The correct distribution of pressure and HF energy is essential to obtain uniform processing along the entire profile of the mat.

Production of components for sunbeds and padded sides

HF machines can also be used for the production of flexible and padded components for children's beds.

The possible processes include:

• union of multiple layers;
• formation of padded panels;
• creation of decorative profiles;
• creation of borders;
• application of reinforcements;
• creation of pockets or passages for fasteners;
• creation of designs, logos and motifs in relief.

The machine can be configured with a work surface suited to the dimensions of the component and the ways in which the material is positioned and moved.

Welding of deck chair covers

Bouncers forchildren can feature shaped seats, padded areas, reinforced edges and decorative coverings.

High frequency welding allows you to obtain regular profiles and good repeatability between one component and the next.

This technology can be used to:

• combine synthetic materials and padded layers;
• form ergonomic zones;
• create decorative patterns;
• make pockets and passages;
• apply reinforcements;
• define the outline of the covering;
• integrate blanking when the product allows it.

Play mats and padded mats

Children's play mats and mattresses can be made up of multiple panels, internal padding and synthetic coverings.

With a properly designed mold you can create:

• separate padded areas;
• boxes and geometric patterns;
• decorative reliefs;
• perimeter edges;
• colorful applications;
• logos or writing;
• sensory and decorative elements.

HF welding allows you to precisely control the shape of the different areas, helping to keep the design of the product uniform during mass production.

Embossing, embossing and aesthetic customization

In addition to welding, high frequency technology can be used to obtain reliefs, bas-reliefs and three-dimensional decorations.

Through customized molds it is possible to create:

• company logos;
• product names;
• geometric motifs;
• characters and decorations;
• quilted lines;
• shaped padded areas;
• custom surface effects.

This possibility allows you to combine technical function and aesthetic customization, enhancing the design of the item without necessarily adding further applied components.

What materials can be processed

Bizeta machines can process various materials compatible with high frequency technology.

The most commonly used ones include:

• Flexible PVC;
• compatible polyurethane and PU;
• TPU;
• coated polyester;
• coupled synthetic materials;
• coupled skins;
• thermoplastic films;
• transparent materials for inserts and windows.

Not all apparently similar materials react in the same way to radio frequency. Additives, coatings, surface treatments and thicknesses can modify the processing result.

Before defining the machine, mold and parameters, it is therefore advisable to carry out tests on real samples of the material.

HF welder or blank welder: which solution to choose

The choice depends on the production cycle and the required result.

A high frequency welding machine is indicated when it is necessary:

• join compatible materials;
• create profiles and borders;
• form padded areas;
• create reliefs and decorations;
• apply reinforcements;
• work components that will be trimmed separately.

An HF blanking welder is instead indicated when you want to integrate welding and cutting in the same production cycle.processing.

This solution can help:

• reduce the number of production steps;
• maintain the correct alignment between welding and cutting;
• limit the movement of the semi-finished product;
• reduce production times;
• contain waste;
• improve the repeatability of the component.

HF machines with fixed table

Machines with fixed table are suitable for productions that require a large and easily accessible work area.

They can be evaluated when:

• the component has significant dimensions;
• production includes numerous formats;
• the material must be positioned manually;
• frequent mold changes are expected;
• the loading time is compatible with the production cycle;
• you want a versatile solution.

The work surface must be sized considering both the mold and the space needed to move the material.

HF machines with moving tables

Machines with movable floors allow the material to be prepared outside the pressing area and subsequently transferred under the mould.

This configuration can help:

• the positioning of multiple layers;
• loading bulky components;
• the registration of the material;
• the preparation of a component while the previous one is being machined;
• the reduction of unproductive times;
• the organization of the operator's work.

Moving tables can make the cycle smoother, especially when the component requires careful positioning before welding.

Multi-station rotary machines

For continuous production and higher volumes, HF machines with multi-station rotary table can be evaluated.

The rotary configuration allows the production cycle to be divided between different positions:

• loading of material;
• component positioning;
• welding or welding and blanking;
• cooling;
• unloading of the finished product.

While a station is busy processing, the operator can prepare the next component. This allows you to reduce waiting times and increase overall productivity.

The importance of the mold

The mold determines the shape of the welding, the relief and any cutting.

Its design must consider:

• shape of the component;
• width of the weld seam;
• number of layers;
• thickness of the material;
• depth of relief;
• presence of padding;
• position of logos and decorations;
• need to cut the outline;
• any areas that must remain free.

A correctly designed mold helps to distribute pressure and energy evenly, improving the precision and repeatability of machining.

Precise positioning with laser pointers

When the material has prints, graphics or elements already applied, registration with the mold is particularly important.

Bizeta machines can be equipped with cross laser pointers with adjustable focal length, which help the operator toplace the component on the work surface.

Accurate positioning allows you to:

• correctly align graphics and soldering;
• reduce differences between components;
• limit load errors;
• improve cutting precision;
• reduce material waste.

Current control with automatic coupler

The Bizeta HF machines can be equipped with an automatic coupler for regulating the welding current.

The current is set and displayed through the HMI and kept constant during the cycle.

This function helps to obtain a more uniform distribution of energy and regular finishes over the entire work area.

High frequency generator designed by Bizeta

The generator represents one of the main elements of the machine.

Bizeta specifically designs the generators installed on its HF machines to obtain uniform current delivery and homogeneous welding over the entire surface.

A stable energy distribution is particularly important when working:

• large moulds;
• complex profiles;
• components with multiple layers;
• coupled materials;
• Padded areas with variable thicknesses.

Pressure regulation and control

The pressure exerted by the mold on the material directly affects the quality of the weld.

Bizeta machines can be equipped with a function that allows you to adjust and display the pressure through the HMI interface.

Pressure control helps to:

• adapt the cycle to the different materials;
• manage different thicknesses;
• obtain uniform welding profiles;
• limit unwanted deformations;
• keep the production process stable.

Anti-spark system to protect the mold and material

During HF processing, discharges caused by impurities, folds, foreign bodies or anomalous variations in thickness may occur.

Bizeta machines are equipped with a highly sensitive anti-sparking device, designed to quickly detect the discharge and stop the process.

This system contributes to:

• protect the mould;
• limit damage to the material;
• reduce waste;
• contain production stops;
• preserve the quality of the component.

Electronic protection must be accompanied by correct preparation of the surface, cleaning of the mold and control of the material before the cycle.

Siemens HMI and storable processing recipes

The Bizeta welding and blanking machines are equipped with Siemens components and HMI with a simple and intuitive interface.

Through the operator panel it is possible to set and store the parameters associated with the different products.

Recipes may include:

• HF power;
• welding times;
• cooling time;
• pressure;
• work quotas;
• specific mold parameters;
• settings dedicated to the individual article.

When a format change is made, the operator can recall the already saved recipe, reducing setup times andrisk of manual errors.

Automatic acquisition of work quotas

During the first setup of a new mould, Bizeta machines can automatically acquire the work quotas and save them in the relevant recipe.

This function allows you to simplify mold changes and make restarting production quicker.

HF machines ready for Industry 4.0

Bizeta machines can be integrated into company IT systems through features consistent with Industry 4.0 requirements.

Interconnection can allow:

• exchange of data with the company management system;
• planning of production activities;
• process monitoring;
• recipe management;
• collection of processing data;
• teleassistance;
• remote diagnosis and remote maintenance.

The digitalisation of the machine allows us to better control production and intervene more quickly if necessary.

How to choose an HF machine for baby items

The choice of machine must be made by evaluating the entire production process.

Before defining the configuration it is necessary to analyze:

• type of item: high chair, stroller, changing table, cot, bouncer or other component;
• material: composition and compatibility with HF technology;
• number of layers: presence of coverings, padding and reinforcements;
• dimensions of the component: influence the work surface;
• welding area: affects the power required;
• type of processing: welding, embossing, embossing or shearing;
• production volumes: guide the choice between fixed, mobile or rotary machine;
• number of formats: determines the frequency of mold changes;
• required precision: affects positioning systems;
• level of automation: must be consistent with the organization of production.

A preventive technical evaluation avoids choosing an undersized or more complex machine than necessary.

New machines and overhauled used HF machines

Bizeta offers both new machines designed to customer specifications and used machines subjected to technical inspection.

A new machine allows you to define:

• generator power;
• size of the plane;
• available pressure;
• fixed, mobile or rotary configuration;
• accessories and positioning systems;
• level of automation;
• integration with the company production system.

A reconditioned used machine can represent an interesting alternative when its characteristics are compatible with the product to be created.

Before purchasing it is necessary to check power, useful dimensions, pressure, state of the machine, safety systems and compatibility with molds.

Why choose Bizeta

Bizeta designs and builds high frequency welding and blanking machines entirely developed in Italy.

Solutions may include:

• machines with fixed table;
• machines with movable floors;
• multi-station rotary machines;
• welding, relief and blanking;
• Siemens HMI and storable recipes;
• HF generator designed by Bizeta;
• automatic coupler;
• pressure regulation;
• cross laser pointers;
• anti-spark device;
• Industry 4.0 preparation;
• specialized after-sales assistance.

The machine is configured starting from the product, the material and the customer's production cycle, with the aim of obtaining precise processing consistent with the required volumes.

What information to provide to receive a technical evaluation

To identify the most suitable solution it is useful to send to Bizeta:

• samples of materials;
• a finished component or prototype;
• technical drawings;
• product photographs;
• overall dimensions;
• measurements of the area to be welded;
• number of layers;
• quantity to produce;
• number of formats;
• type of finish required;
• possible need to integrate the cut.

Contact Bizeta to submit your project. The analysis of the product and materials allows us to define the machine, the mold and the configuration most suitable for the production of articles for early childhood.

Frequently asked questions about HF machines for baby items

1) Which baby items can be processed with an HF machine?

HF machines can be used to cover high chairs, strollers, prams, changing tables, cots, bouncers, mattresses, play mats and other components made with compatible thermoplastic materials.

2) Is it possible to produce covers for high chairs?

Yes. High frequency welding can be used to join layers, create edges, form padded areas, apply reinforcements and create decorations on high chair covers.

3) Can HF machines process components for strollers?

Yes. They can be used for seats, backrests, padding, side protectors, pockets and other flexible components compatible with radio frequency.

4) Is it possible to make changing table mats?

Yes. HF machines can weld the external covering, define the padded areas, create edges and, with a shear welder, trim the outline of the mattress.

5) Can we produce components for sunbeds?

Yes. It is possible to create padded sides, protections, mattresses and decorative panels, depending on the materials and dimensions of the component.

6) Can HF machines process covers for deckchairs?

Yes. They can join multiple layers, create shaped profiles, create padded areas and integrate reliefs or decorations.

7) Is it possible to produce play mats?

Yes. Through dedicated molds it is possible to form padded areas, borders, decorative motifs, boxes and applications on play mats made with compatible materials.

8) Which materials can be welded at high frequency?

The most common materials include PVC, PU, TPU, coated polyester, synthetic materials and bonded leathers. Compatibility must be verified on the actual material.

9) Can all synthetic materials be welded with HF technology?

No. The response to radio frequency depends on the chemical composition, coating, additives and thickness. It is therefore advisable to carry out testspreliminaries.

10) Is it possible to work with padded materials?

Yes, as long as the external covering is compatible with HF technology and the mold is designed considering the thickness, compressibility and shape of the padding.

11) Can logos be created in relief?

Yes. Through a personalized mold it is possible to create logos, writings, geometric patterns and three-dimensional decorations.

12) What is the difference between a welding machine and a welding machine?

The welding machine joins or shapes the materials along the mold profile. The blanking welder can also integrate contour cutting into the same production cycle.

13) Is it possible to weld and cut in the same cycle?

Yes, when the material, the geometry of the product and the mold are compatible with a combined welding and blanking process.

14) When is a machine with a fixed table convenient?

The fixed table is suitable for components of large dimensions, diversified productions or processes that require a large and easily accessible area.

15) What are the mobile floors for?

The mobile planes allow the material to be prepared outside the pressing area and subsequently transferred under the mould, facilitating positioning and organization of the cycle.

16) When is a rotary machine useful?

A rotary machine is suitable for higher production volumes, because it allows you to separate loading, processing and unloading on different stations.

17) Is a specific mold necessary for each product?

Generally yes. The mold must be designed according to the shape, the welding area, the relief, the thicknesses and any cutting required.

18) What are laser pointers for?

Laser pointers help the operator to precisely position the material with respect to the mold, especially when there are graphics, decorations or pre-printed references.

19) What is the automatic coupler?

It is a device that regulates the welding current and helps keep it constant during the cycle, promoting uniform processing.

20) What is the anti-spark system used for?

The anti-sparking system quickly detects any anomalous discharges and helps protect the material and the mould, reducing waste and damage.

21) Is it possible to store the parameters of multiple products?

Yes. Through the Siemens HMI it is possible to create and save recipes dedicated to different products and recall them during format changes.

22) Are Bizeta machines set up for Industry 4.0?

Yes. They can be interconnected to company IT systems for data exchange, production monitoring and remote assistance.

23) How is the necessary power established?

The power mainly depends on the effective welding area, the material, the thickness, the number of layers and the geometry of the mold.

24) Bizeta also offers used HF machines?

Yes. Bizeta also offers overhauled used machines. Compatibility with the specific application must be verified considering power, plane, pressure and configuration.

25) Is it possible to carry out tests on materials?

The possibility of carrying out tests must be agreed with Bizeta. Sending samples allows you to verify the compatibility of the material and evaluate the result of the processing.

26) What information is needed to request a quote?

It is useful to provide samples, photographs, drawings, dimensions, welding area, quantity to produce, number of formats and type of processing required.