HIVIX – manufacturer of
high-frequency welded and
heat-welded plastic products





Our pursuit at Hivix of the highest quality inflatable air products is sustained by
our commitment to be second to none when it comes to welding techniques.
Thanks to the deep knowledge that results from the build-up of hard-won technique,
along with the skills of our staff, we are able to continue to progress our business and
answer the varied needs of our customers.

Among our various welding techniques, “high-frequency welding”
takes pride of place. High-frequency welding marries strength of
welds to a beautiful finish.

High frequency welder processing is a heat treatment process that uses a machine known as a “high-frequency welder”. It is used for welding and fusing target materials and is a mainstay of our business.
Heat welding is the process by which materials are joined through the use of heat. When the materials cool they solidify and become one. However, in high-frequency welding the target materials, through oscillations induced by high frequencies, are joined at the molecular level.

The most important difference between heat welding and high-frequency welding is that in high-frequency welding, in a sense “heat” itself does not exist.
Instead, the application of high-frequencies causes molecules in the target material to oscillate. This oscillation generates heat, which then welds the target materials. The very materials that you want to join are the heat source. This basic principle of high-frequency welding is very similar to that exploited in a microwave oven.
To continue the analogy, if high-frequency welding operates like a microwave oven (heat is generated from the target materials), then heat welding can be compared to a regular oven (heat source external to the target materials).

Our high-frequency welding method uses heat generated uniformly from the interior of the target materials themselves, and unlike in heat welding, the materials are joined at the molecular level, resulting in an exceedingly tough bond.
Because the amount of excess heat is kept to a minimum, problems such as scorching or resin stringing can be avoided, resulting in a beautiful finish.

The lack of an external heat source makes the manufacturing process faster, which means faster welding times are possible.
Moreover, we are able to maintain very stable high quality, so it is a very efficient processing method and we are able to produce high quality product in a short period of time.

Both during and after the high-frequency welding process, there is no release of harmful gases and noise levels are low.
For that reason the processing method is said to be safe, and gentle on health and the environment, so we feel we are making a contribution to a cleaner work environment.

In addition to high-frequency welding, depending on the materials and intended use, there are various other techniques that we apply at Hivix.

Hot plate welding
This involves placing the target materials between two hot plates. It is possible to weld very long sheets of material (Continuous feed) and unlike in high-frequency welding there is no limit on the type of materials used.
However, as continuous-feed processing can only occur in a straight line, it is unsuitable for “R”-type processing.

Impulse welding
in this method an instantaneous pulse of electricity is sent through a conductive wire, which heats the wire and welds the materials. This method very effectively fuses the target materials and it is useful for materials such as PE and PP that cannot be welded using a high-frequency welder. As this method is dependent on the target’s ability to transfer heat, it is unsuitable for thick materials.
Similarly to hot plate welding, this method is designed to be used in straight-line processing and so is unsuitable for “R”-shape processing.

Sewing is a way we add value to our welded products. The main use of our products is in the manufacture of bags designed to retain air pressure (airtight bag making). We use various types of high-functionality textiles to add value to our products that can’t be achieved from welded products only. We can handle a wide variety of fabrics, from knitted to woven and from thick to thin.


Gifu prefecture,Japan