Ejection or stripping rubber is tooling-specific. Its function and placement must be confirmed from the actual cutting tool rather than inferred from a roll-fed machine description. Flatbed steel-rule tooling and rotary tooling may use different arrangements; some supplied systems use other release methods. A general rubber-replacement recipe is therefore unsuitable.
Identify the cutting and release construction
The KN-950 reference identifies roll-fed flatbed cutting. A description of release from a rotary die and nip applies only when that construction is actually fitted. Roll feeding alone does not establish it.
Obtain the actual die layout and release arrangement. Confirm whether rubber is fitted, what it is intended to release and which areas use which supplied profiles. Do not assume that information for a rotary support product applies to a flat die board.
| Requirement | Evidence to obtain | Avoid |
|---|---|---|
| Tool construction | Actual machine and die drawing | Inferring rotary cutting from a reel |
| Rubber specification | Supplier code and intended location | Selecting by color alone |
| Release function | Blank/waste path and defect samples | Treating every incomplete cut as poor ejection |
| Installation | Tool supplier's layout and method | Adding uncontrolled layers or adhesive |
Distinguish incomplete cutting from failed release
Preserve labeled blanks and waste, including orientation and affected feature. Determine whether the material was fully cut before it failed to separate. An uncut bridge, damaged edge or a delivery obstruction can create a superficially similar result.
Record the material, die identity, approved setup and recent work. A local repeat pattern identifies an area to investigate, not a confirmed rubber fault. Use the tool inspection guide to establish the correct construction before following a component-specific path.
Control replacement through the tooling supplier
Qualified personnel must follow the approved isolation and sharp-tool handling procedures. Obtain the actual product, profile, placement and installation requirements. This page does not specify hardness, height, adhesive, compression or cutting-force values.
Preserve findings before intervention where safe. Do not stack materials, reshape the cutting rule or increase force simply to conceal uncertain release behavior. The tooling supplier should determine whether a proposed replacement matches the intended design.
Verify cutting and delivery together
Restore protections and complete required function checks after authorized work. Compare cut completeness, edge quality, release and delivery against the original acceptance method. Record simultaneous changes rather than attributing all improvement to rubber replacement.
Use the waste stripping and blank delivery guide for a downstream issue. Send HANNAI the actual tooling drawing, material and mapped samples when discussing the supplied machine, including whether rubber is fitted at all.
Frequently asked questions
Can rubber be selected by color?
No. Obtain the actual specification and intended tool location from the responsible supplier.
Does a roll-fed cutter necessarily eject from a rotary nip?
No. Confirm the cutting construction and release path separately.
Is more force a general cure for poor release?
No. First distinguish incomplete cutting, tool condition and the actual release function.
What evidence supports replacement?
The actual tool drawing, specified rubber or release component, relevant defect samples and an authorized work and validation record.