About Sealers

What is an impulse sealer?

An impulse sealer heat-seals objects by sending high current on impulse to a heater ribbon, equipped on the surface of the heat-sealing blade, to generate heat that enables thermal-sealing through thermal conductivity. The section to be sealed is placed between the heat-sealing blades, pressed and thermal-fused when current and heat are delivered on impulse through the heater ribbon. After the current stops the seal remains under pressure to cool and to give it a clean finish.

(Source: The Hoso Times, published by Nippo Co., Ltd.)

What’s So Good About An Impulse Sealer?

  • Impulse seal is ready to use:

    This is no warm-up period after turning it on.

    Constant heat sealer requires waiting time for the hot bar to heat up. This also means additional power is wasted.
  • Impulse seal is economical:

    Electricity for the heater is only used during the sealing process.

    Constant heat sealer must maintain the sealing bar hot at all times. Power is constantly drained as long as the switch is on.
  • Impulse seal poses little risk of burn injury:

    No component is always hot.

    Constant heat sealer maintains the sealing area hot at all times, exposing the user to a higher risk of accidentally touching the hot bar.
  • Impulse seal creates a seal with a clean slate:

    Cooling and fusion takes place under pressure.

    Constant heat sealer merely provides heat, leaving cooling and fusing process to take place while the package material is shrinking. This results in a rather uneven finish.

A Variety of Sealers

Our machines seal the openings and loose ends of plastic packaging materials (such as bags). In addition to impulse sealers, sealers include the constant heat sealer, the ultrasonic sealer and the high-frequency sealer.

What is ONPUL

At Fuji Impulse, in order to realize high-precision sealing and add more value to the sealer, we are promoting equipping the sealers with a special added function and to make it a standard. That function is “ONPUL.”

Sealing at an ideal temperature while maintaining the desired setting.

High-precision sealing: heat temperature to melt film and cool at temperature to solidify film.

How does an Onpul Sealer work?

Onpul Sealer controls heating temperature by directly measuring the heater temperature using a low-pro file temperature sensor that comes in contact with the heater.

Onpul Sealer us the answer to the following problems:

Operating for an extended period caused a melted-film seal.

You know the film-fusing temperature, but cannot set the heater temperature to it.

The sealing finish differs from the initial finish after a prolonged use.

If you have any of the above problems, Onpul can help!

Onpul Sealer saves the day when:

You can’t afford to have sealing failures caused by changes in the heating temperature.

You need to male a prolonged, continous use of the sealer for volume production.

You need to maintain consistent precision and strength of the seal.

What does the word “Onpul” stand for? Is it English? Japanese?

It is a combination of both, derived from “Ondo (Japanese for temperature) control Impulse Sealer.” The “On” and “pul” were put together to make “ONPUL”

How does it differ from other sealers?

It is economical:

Because it can be operated using bare-minimum heating, it is energy-efficent and labor-efficent. It also reduces wear on the parts.

You can set the heating temperature:

All of our other products are designed to set the heating time (timer); heating temperature can only be set with an Onpul.

You can set the ideal sealing conditions:

The biggest feature of the ONPUL Sealer is the ability to set the ideal sealing condition. The heating temperature is set by controlling the temperature through the use of a high-sensitivity temperature sensor and by microcomputer-control. The heating process can this be completed at the film-melting temperature without being affected by an increase in the air temperature or machine temperature.

Comparing sealers: