What kind of die does Schober manufacture?

• Crash cut dies cutting against a rotating anvil
• All Schober dies are solid trough hardened since 1975 and CNC finished since 1982

• Schober is manufacturing a wide variety of rotary cutting dies. Depending on various parameters such as web width, die diameters, production speed, materials to be processed, cutting patterns, etc., the die design will change.
• They can be: solid, as shells or segmented.

• As we specialized on cutting through the materials onto a hardened anvil, a solid hardened die supplies the best amount of cuts between re-sharpening.
• Before the numerically controlled technology was available, the manufacturing of rotary dies was a slow, manual and inconsistent process. Lifetime cycles were totally unpredictable. Today the dies can be reworked and re-manufactured to preset parameters and programs with hardly any manual work involved. This has increased the product quality and made the dies predictably better in the amount of cuts they supply.

• Minimum roll diam: 2" (approx. 50 mm)
• Maximum roll diam: 22" (approx. 560 mm)
• Total overall length between centers: 115" (approx. 3,000 mm)
• Maximum weight of rolls: approx. 7,500 pounds (2,500 kg)

• Most web fed materials have been die cut: Paper, Pressure Sensitive Materials, Board, Laminates, PP and PE film, Spunbonded Nonwoven, Styrofoam, etc.
• Materials from 0.0005 to 0.200" (0.012 to 5.00 mm) thickness are processed
• Depending on their properties, life time will vary and the appearance of the cut changes

• Super CR
• HSS - Tungsten
• LL - Long Life
• TC - Tungsten Carbide

Basis is the Super CR Material

• HSS 2x
• LL 10x
• TC 20-30x

Most of the Schober dies work in Schober die cutting modules!
Depending on their purpose the following designs are available:

• dies with bearer rings - fixed distance to anvil
• dies with bearer rings - adjustable distance to anvil
• dies without bearer rings - micro adjustable

• Waste have been rewound, chopped, collected mechanically or by vacuum. This again depends on the properties of the die cut materials, shapes, speeds, etc.

• Schober is aware of and has supplied various vacuum waste removal systems for either the die or anvil rolls. Furthermore, there are systems that remove the waste by vacuum after the web passed through the cutting module.

• Over the past 20 years and through our continued R&D, a wide variety of know-how in engineering and design has been accomplished. Annual feedback of more than 50 modules installed per year in many different converting areas has made it possible for the different materials processed in several high end standard solutions to be available. They will, as needed, be customized to our customer requirements.

• Schober has been supplying cutting dies to the general paper, film and foil converting, as well as the hygienic industry and partially to the packaging industry since 1976.
• All cutting dies represent a solution in accordance to the customer's specific requirements, in which the existing know-how is being used.
• Schober considers the development in the cutting die's materials as one of their main tasks in the field of product development for cutting dies. This is why for instance, in the 1980's Schober was one of the first manufacturers to use M2 steel for cutting dies. This development has consequently been continued by the use of powdered metallurgical manufactured steel and tungsten carbide. For almost any newly developed material, Schober has always been the first tool manufacturer to offer these materials. Before supplying new products, materials are field-tested in selected customer's machinery.

• Only after the module has been checked and, if necessary, improved to match Schober standards.

• Depending on the installation, up to linear 2,000 feet/min ( 600 m/min).

• All classic possibilities in regards of temperature control are known to Schober concerning heat increase of the bearing application, cutting dies and drive system.
• In the past, temperature influences have been measured and tested against the heating up via cooling. For approx. 2 years, Schober has been marketing high speed die cutting systems that do not require any additional cooling as the modules are designed and built that the temperature increase at common production speeds do not exceed 9 °F (5 °C). In most cases, the temperature increase of the cutting die averages at 5.4 °F (3 °C).
• The Schober philosophy is to constructively avoid the creation of temperature rather than react to it. This avoids the adjustments of the die cutting module, prior, during production or after a weekend, if run in shifts.

Depending on the customer requirements, the following die and anvil values can be met.



Total indicated run out:	0.002 mm (0.00008")
Surface finish:	Ra 0.10
Accuracy of land width:	0.02 mm to 0.1 mm (0.00008 to 0.004"), depending on the die roll and product design with an accuracy of 0.01 mm (0.0004").