定制异形热封带
热封带是热封工艺的核心部件。 与刀体结构、薄膜特性完美适配的热封带，是脉冲热封系统稳定可靠的关键。
与 ROPEX 热封刀相同，我们的热封带可提供直线型以及 2D / 3D 定制轮廓结构。
我们支持多样化定制：
根据您的图纸加工、复刻现有热封带，或优化结构以实现最佳密封效果。
针对新项目，我们可按照您的技术要求，设计并制造定制轮廓热封带与热封工具。
可提供轮廓类型：
- 开放和封闭轮廓（从简单到复杂形状）
- 精密大型及微型热封带
- 切割丝
- 定位精准的固定接片与熔接定位销
- 接线端子可选：内侧 / 外侧接片（或两者兼具）、表面密封接片、黄铜接片
- 可设定有效加热区（分区加热带）
- 接片采用铜或铜镍镀层，有效延长热封带使用寿命
- 吸嘴封口
Straight heat-sealing bands
Straight heat-sealing bands (strips) are the most widespread.
Their thickness, width, profile, length and alloy vary according to the application. Heat-sealing bands can have a thickness of 0.1 mm to 0.4 mm and are usually between 2 mm and 10 mm wide. The length ranges from a few centimeters to several meters.
The part of a flat band facing the film is generally wedge-shaped (tapered), to ensure that a sufficiently strong sealed seam is also created at the edges.
The design of the heat-sealing band ends also varies considerably. A reliable connection must be guaranteed between the band and the bar end block. Easy handling and freedom from contact resistances are also important. Sleeves, eyelets and brass end pieces are used for this purpose.
Parts of the heat-sealing bands that don’t need to be heated for sealing – especially the free ends – are passivated by suitable types of coating. This prevents them from overheating, which is also vital for precise temperature control.
Heat-sealing bands play a functional role in the impulse heat-sealing process, which means we – as the supplier – have no room to compromise on quality.
2D contours
The general description above is equally applicable to contoured heat-sealing bands in 2D or 3D:
- The contour of the heat-sealing band must be matched to the required seam and to the contour and geometry of the substructure.
- Bar end blocks and wedge-shaped edges are also required here.
- The ends of the heat-sealing band should have a low-impedance coating of copper, silver or nickel.
- The electrical connections should be adequately sized to prevent measuring errors due to temperature rises when determining the resistance.
All contoured heat-sealing bands supplied by ROPEX are designed using a 3D CAD tool. The files created in this way are used for further processing, e.g. laser cutting or anti-stick covers. The technical specifications are carefully documented and kept together with a reference sample, which can be used again for follow-up deliveries.
3D contours
Heat-sealing bands can also be supplied with a 3D contour to match our sealing bars. This is necessary for sealing applications featuring a spout, for instance. The heat-sealing band corresponds exactly to the contour of the closure. One particular challenge here is that instead of simply sealing the film, it must be sealed with a closure.
Customized version
Many applications require highly customized heat-sealing bands. We can provide exactly the right solution – from bands with multiple temperature zones to circular heating tools. With our longstanding experience and our 3D CAD system, even the most complex geometries are not a problem.
SUBMIT A TECHNICAL REQUEST
With the following questionnaire we can calculate your application and create an application report.
For this purpose, please enter your contact data and parameters in the respective fields and submit the questionnaire. Based on your data we will create your application report and contact you in case of any queries.
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