Silicone molds for pectin gummies: sticky peel and outer-row grams

When sticky pectin stretches a soft tray and piece weight drifts, you need a platinum RTV pectin mold cut to your grams, Shore A, and food-contact path - not a gelatin tray with a new mascot. If the finished gummy must weigh 4.0 g, we size the cavity from volume and formula density, then check that a loaded tray doesn't sag 0.5-1.5 mm at the edge so outer-row pieces run 3-6% heavy versus the center. High-acid pectin grabs sharp letters; a deep mascot that peels in gelatin can tear here. RUUIPON pours these as tools in Bao'an since 2018: resin master to RTV casting mold. Prototype in 3-7 business days after CAD lock. MOQ 20 pcs/design. 21 CFR 177.2600 is extraction of the article, not an FDA-approved factory. Don't copy a gelatin mold without a pectin dump test - gelatin. Hub: gummy molds.

Shore, jacket, and peel together

A tray that's too soft stretches the piece. A tray that's too stiff locks a deep mascot. Typical production trays for sticky pectin sit around 20A-30A with a rigid jacket; a 10A-20A skin is for undercut peel, not for walking a loaded sheet. Don't raise Shore A first to "fix stretch" if the real issue is missing jacket keys.

Depositor lines: pitch from the machine drawing - depositor-compatible. Flood-and-scrape: flood-and-scrape.

Logo depth that still peels

Logos need enough relief to read after dump, not so much that thin letters trap pectin. Fillet roots and add draft. Hairline serifs belong in print - logo molds.

When this pectin advice does not apply

Gelatin SKUs belong on the gelatin page. If the mascot is still changing, don't buy a 40-cavity sheet. Steel high-volume *part* tools → an HTV product RFQ here. A one-cavity artisan dump can skip a production jacket. Geometry can override quantity: a negative-draft ear still needs a split at 80 dumps.

If you only have photos, custom 3D modeling is USD $50 when that scope applies.

Pectin RFQ to copy

Process: platinum RTV tray (not tin)
Target grams (e.g. 4.0 g); pectin (not gelatin)
STEP/STL; outlined logo + depth
Cavity count, tray size, fill method
Jacket / support pan: yes/no
Market; 177.2600 / LFGB
Custom 3D modeling: USD $50 when that scope applies
Prototype with pectin, then MOQ 20 pcs/design
Acceptance: weigh every pocket; no abnormal stretch on peel

Send the pocket STEP, 4.0 g target, and tray size to contact ([email protected] / +86 135 3006 2969). Licheng Technology Industry Park, Xinhe Blvd, Shajing, Baoan.

Matched CTA: Send pectin grams, mascot STEP, and tray span for a jacket-and-peel review - not a gelatin spec, and not a generic free quote.

We would not recommend raising Shore A first to hide a missing jacket. We would not copy a gelatin cavity without a pectin dump. We would not call 177.2600 an FDA-approved factory. We would not paste LIM runner math onto a pectin slab.

RUUIPON Mold Structure Decision: 4 g pectin dump on a jacket that stays flat. Flat back? open-back sheet. Deep mascot undercuts that won't peel? fillet, split, or core. Soft 10A-20A skin? mother mold before you add pockets.

CAD frozen? - no -> 1-2 cavity prototype
CAD frozen? - yes -> Jacket keeps sheet flat?
Jacket keeps sheet flat? - no -> Mother mold / thicker border first
Jacket keeps sheet flat? - yes -> Weigh every pocket
Weigh every pocket -> Outer-row 3-6% heavy or stretch on peel?
Outer-row 3-6% heavy or stretch on peel? - yes -> Mother mold / thicker border first
Outer-row 3-6% heavy or stretch on peel? - no -> Lock Shore and recast master
4 g pectin dump -> Need steel or LSR parts?
Need steel or LSR parts? - yes -> Ask us: steel or LSR part tool, not this RTV tray

Typical shop values

Reference values only. Confirm material-specific limits against the supplier’s technical data and agree project acceptance criteria before production.

Item	Typical shop value
MOQ	20 pcs/design after sample approval
Custom 3D modeling	USD $50 when that scope applies
Prototype	3-7 business days after CAD lock
Mix	Platinum 1:1 or 10:1; vacuum degas
Cavity Shore	20A-30A production tray; 10A-20A skin only if undercuts need peel
Platinum shrink	About 0.1-0.3% after full cure
Loaded-tray edge sag without a jacket	About 0.5-1.5 mm
Target piece	4.0 g from volume x formula density
Outer-row vs center if tray sags	Edge often 3-6% heavy vs the center pocket

FAQ

Why did my outer-row pectin gummies weigh more? The sheet sagged. Weigh every cavity, then add a jacket before you add cavities.

Can I use my gelatin tray for pectin? Not without a dump test. Pectin is stickier. Prototype.

Is 21 CFR 177.2600 a factory stamp? No. Extraction of the finished rubber article.

Do I need a prototype before MOQ 20? For a new pectin shape, yes. 3-7 business days after CAD lock.

When should I use two 8-cavity trays instead of one 24-cavity sheet? When a torn skin would stop the SKU, or when the span would sag.