DIE-CUTTING · PERFORATING AND PUNCHING
Perforating and Punching Die-Cut Parts
Perforations make parts easier to detach by hand, while internal cut-outs create the required opening in a die-cut part. Krückemeyer GmbH adapts the hole pattern, material structure and delivery format to your application and handling requirements.
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PERFORATION AND INTERNAL HOLES
A separation line or an opening, depending on the application
Perforating creates a separation line in a die-cut part or its backing so that a section can be detached by hand. Punching removes an internal section. The two results serve different purposes: a defined point of detachment or an open hole in the shaped part.
The starting point is your component and the subsequent processing step. The material, layer structure, hole pattern and spacing determine which process makes sense. With multilayer structures, it must also be clear which layers are to be separated and which are to remain as backing. Some viscous materials can only be perforated to a limited extent because the holes may close again over time.
Krückemeyer assesses feasibility for the specific starting material and required delivery format. Die-cut parts can be supplied on rolls, on sheets or as individual parts; the appropriate format depends on handling and the application process.
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FROM REQUIREMENTS TO HOLE PATTERN
Step 01
Clarify application and starting material
Tell us about the component, material structure and purpose of the perforation or opening. A drawing and material sample help us assess the layers and handling.
Step 02
Agree the hole pattern and layers to separate
Together, we define the position, shape and spacing of the openings and the layers to be separated. The material and geometry determine what needs to be assessed.
Step 03
Test a sample for handling
An agreed sample is tested in your application for detachment, positioning and further processing. Changes to the hole pattern or design can then be specified.
Step 04
Specify production and delivery format
Once you have approved it, the agreed version is produced. Rolls, sheets or individual parts are selected to suit further processing.
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PERFORATION OR INTERNAL PUNCH-OUT
Perforation for manual detachment
A perforation line makes it easier to separate a die-cut part or its backing in a controlled way. Its path and the material structure are adapted to subsequent handling. Enquire about perforation →Punching an internal hole
Removing an internal section creates the required opening in the shaped part. The contour and position are assessed using the component and drawing. Enquire about punching →04
DELIVERY FORMATS WITH HOLE PATTERNS
Die-cut parts on rolls
Die-cut parts can be arranged on a backing as roll stock. The hole pattern, spacing and removal must suit the intended processing step. Enquire about roll stock →Die-cut parts on sheets
Sheet stock holds shaped parts on a backing for further handling. Their arrangement is adapted to the geometry and application. Enquire about sheet stock →05
ASSESS STARTING MATERIAL FOR PUNCHING
Adhesive tapes
Adhesive tape can be used as a starting material for die-cutting. The carrier, adhesive layer and liner determine which layers are processed when holes are punched. Die-cut adhesive tape →Technical films
The suitability of technical films depends on their material and structure. For an internal opening, the contour and the part's subsequent function are assessed. Die-cut films →Foams and composites
Suitable foams and multilayer composites can also be die-cut. Whether punching a hole works in the specific structure is assessed for each project. Die-cut foam →06
VIEW HOLE PATTERNS AND PERFORATION
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WHAT DETERMINES THE HOLE PATTERN
| Feature | Perforation | Internal cut-out |
|---|---|---|
| Purpose of processing | Manual detachment along a separation line | Open hole in the shaped part |
| Geometry to clarify | Path and spacing of the separation points | Shape and position of the internal section |
| Material structure | Layers of the part or backing to be separated | Layers to be separated and backing to be retained |
Material structure and application are assessed individually.
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DETAILS FOR YOUR PERFORATION ENQUIRY
Describe whether you need perforation for manual detachment or an internal opening. If possible, send a drawing showing the hole pattern, contour, position and spacing, along with details of the component and how it will be handled later.
Also important are the starting material and layer structure, any existing backing, the required delivery format on rolls, sheets or as individual parts, the planned quantity and quality requirements. A material sample or a part currently in use helps with the feasibility assessment.
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QUESTIONS ABOUT PERFORATING AND PUNCHING
What is the purpose of perforating a die-cut part?
It can make a part easier to detach by hand at a designated separation point. The perforation must therefore be adapted to the material structure and required handling. With a multilayer die-cut part, it is particularly important to clarify whether only the part, its backing or further layers are to be processed. There is no standard version suitable for every starting material.
How does punching a hole differ from perforation?
Punching creates an open internal hole, while perforation prepares a separation line for later detachment. The appropriate contour and path depend on the component and application. Krückemeyer assesses the material, layer structure and geometry for this purpose. Whether the backing is to remain in place is also part of specifying the design.
Which starting materials can be perforated or punched?
Suitable die-cuttable materials can be considered, particularly adhesive tapes, technical films, foams and material composites. However, the material designation alone does not establish feasibility. The carrier, adhesive layer, thickness, layer structure, hole pattern and required delivery format must be assessed together. Therefore, provide details of the specific starting material or a sample when enquiring about perforation or an internal opening.
In what form can punched die-cut parts be supplied?
Die-cut parts can be supplied on rolls, on sheets or as individual parts. The choice depends on the material structure, geometry, handling and application process. With perforation, the way parts are detached by hand can also affect their arrangement. Describe how the parts will be removed and processed further so that a suitable delivery format can be determined.
Enquire about perforating or punching
Send us your drawing, material structure and details of subsequent processing. We will assess the hole pattern and suitable delivery format for your application.
ADVICE ON HOLE PATTERNS AND MATERIALS
Thomas Klein
Contact for converting
Discuss the required opening, starting material and subsequent handling with Thomas Klein.