Cardboard and paper industries die-cut tens of thousands of sheets every day – and at a breathtaking speed. However, this leaves behind a bulky waste product: die cutting grids that have to be disposed of. Cutting up the grids manually and feeding them into the recycling process would be far too time-consuming. Fortunately, we offer the right solution for this task. Now, the die-cut matrixes pass over rollers to cutting knives that shred them into manageable pieces. These pieces are transported away by means of a conveyor belt. However, it is also possible to install a suction device.

Another solution for punching grids is our SZM 1200/1500 shredder.

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Note added at 21 mins (2021-07-09 14:20:37 GMT)
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Edge strips are shredded by special tearing fans, gripper edges and punching grids are shredded directly at the punch, and the centre cut-out can be portioned by conveyor belt shredders. Manual shredder solutions such as the PHS/PHSH shredder are suitable for sheet material and the annoying sleeves can also be processed for the baler with the PHH shredder. With the PHSH shredder, Höcker Polytechnik offers a particularly economical solution, because it can process both tubes and sheets.

https://www.recovery-worldwide.com/en/artikel/efficient-mana...

Je nachdem, was damit genau gemeint ist, gibt es unterschiedliche Bezeichnungen:

scrap web das Stanzgitter Pl.: die Stanzgitter
lead frame [TECH.] das Stanzgitter Pl.: die Stanzgitter
punching scrap [TECH.] das Stanzgitter Pl.: die Stanzgitter
pressed screen [TECH.] das Stanzgitter Pl.: die Stanzgitter
punch scrap [TECH.] das Stanzgitter Pl.: die Stanzgitter
https://dict.leo.org/englisch-deutsch/Stanzgitter

Ich tippe auf Stanzabfälle, also auf "punch(ing) scrap"

"punching scrap" About 7.160 results (0,41 seconds)
"punch scrap" About 13.200 results (0,38 seconds)

Verwendung für
Alle Arten von Blistern und Folien (z. B. Stanzgitter)
In use for
All kind of blisters and foil (e. g. punch-scrap)
https://manualzz.com/doc/4476838/deblistering-made-easy--die...

Die Stanzgitter werden hier in kleine Pappstücke geshreddert und mittels einer Höcker Polytechnik Absauganlage vollautomatisch weitergefördert.
:
Specially shaped suction hoods below the punch presses extract light grammages and punch scrap scraps of the center-breakout directly at high speeds.
https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd...

Mit der optionalen Einzugsvorrichtung kann das Stanzgitter der Blisterlinie sogar online (geschwindigkeitsgeregelt z. B. abhängig von der Blisterlinie) zerkleinert werden
:
With the optional feeding device the punch scrap can even be cutted online (controlled speed e. g. depending on blister line).
https://www.rbp.de/downloads/rbp-bauer-fc120-info-de-en/

Knockout for punch scrap
A scrap knockout for use with a rotary punching apparatus includes a knife cylinder equipped with punch blades on the outer peripheral surface, and an anvil cylinder having a layer against which the blades are pressed, so as to punch a workpiece fed in between the two rotating cylinders.
https://patents.justia.com/patent/4224851

The business area Conveyor systems sells, plans and manufactures conveying and system solutions for transporting, interlinking, feeding, installing of bulk parts, disposal of punch scrap and chips as well as magnetic filter and separation units.
https://www.nsm-magnettechnik.de/en/Conveyor-Systems