Custom Die Cut Adhesive Parts for Camera and Sensor Modules

Application notesPublished 07 November 2026Updated 07 November 2026

A camera and sensor module line in the Pearl River Delta places adhesive parts a few millimetres across with a vacuum nozzle onto coated boards, one pick and one place per cycle, and the parts reach that station as custom die cut adhesive pieces on a slit liner, registered in position with the waste already gone. The assembly is too small for a human hand at the placement step and too visible at the finished product for anything short of a clean edge. That combination is what makes module parts a specific converting problem rather than a generic small one.

What the station does to the specification

Four realities of the cell override whatever the drawing assumed. The nozzle is the customer: at this scale, release force is not felt by a thumb but tested by a 0.4 to 0.8 mm orifice lifting a part in milliseconds, and a soft acrylic that strings between the liner and the nozzle tip becomes a board-level defect. Magnification is unforgiving: fibres, matrix crumbs and die-line dust that no AQL plan ever catches are visible to the operator under the scope and to the end customer later. The coated surface is delicate: anti-reflective and hydrophobic layers tolerate placement pressure once, which means the part must arrive flat, positioned and oriented without a second touch. And the cycle time is real: a feeder that must re-grip a curling liner strip is a station that quietly stops producing.

The five items we review before tooling

1. Part size against cutting route. Where volume is high and the build thin, rotary roll-to-roll holds registration and material use; thick or multi-layer builds go to flat-bed; complex outlines before the design freezes go to laser. The route is stated with its reason in the quote, on the die-cutting page.
2. Liner format against the feeder. Machine-fed module parts want a slit liner in the 25 to 100 µm PET band, wound so the strip feeds flat, with the width matched to the pick station rather than to the roll catalogue; the slitting step is planned as part of the tool decision, not after it.
3. Release behaviour against the nozzle. Release is set by liner and adhesive choice and confirmed on samples from the actual route, because a release that reads correct on a datasheet sheet can still be wrong at 300 milliseconds and one pick per second.
4. Edge and carrier condition. On thin PET carriers the die line crushes the edge as it cuts, so the edge standard is agreed visually under the same magnification the line uses, and the achievable tolerance is stated against your drawing before tooling is cut rather than assumed from a generic figure.
5. Cleanliness and presentation. What touches the part between press and picker matters more here than dimensional variance: matrix crumbs, rule wear, static at the bench. The cleaning level and the packing format are decided together at review, because one without the other is a promise nobody can verify.

Prototype quantities available; production quantities agreed per part. Timing for samples and for production depends on material availability and route and is confirmed at quotation.

How the work is actually processed

Laser prototypes first for fit and pick trials while the outline still moves. On custom die cut work the production decision is half the cost conversation: rotary for the thin high-volume pieces, flat-bed for the laminated builds with a foam or transfer layer inside them, CNC assistance where a multi-layer stack needs a second operation. Matrix stripped so lanes stay clean under the camera's field of view, parts registered on the slit liner, roll or sheet presentation matched to the feeder, first-article report issued against the drawing with the datums the placement actually references, and the shipment linked to the incoming lot so a liner complaint six months later resolves to a batch, not a memory. The parts page lists the material families converted for module work; the tolerance guide explains how the drawing should read for parts at this scale.

What the buyer sends to start

The drawing or a clean sample, with the two or three dimensions the placement really depends on. The material class, or the surfaces and the function if nothing is approved. A short video of the pick station showing nozzle size and cycle. The liner format the feeder expects. Annual quantity band and the launch window. Anything visible about the failure you are escaping, even just the word "stringing", because one honest word at the start replaces a week of questions later.

Bring the station, not just the part

Email the drawing or sample notes to yantian0606@gmail.com, or start the conversation on WhatsApp at 8613554863137. Describe the pick, not only the part: module work is quoted correctly only when the reviewer knows how the piece leaves the liner and lands on the board.

Commercial and process terms on this page are the questions a converter has to answer, not a standing offer. Order quantities, lead times, tooling charges, sample terms, freight and payment structures are confirmed at quotation against your drawing, your material and your destination, and only figures already published elsewhere on this site are stated as commitments.