Silicone Product Technology

A retaining lip is not difficult because it is deep. It is difficult because of the geometry around it. This article reframes undercuts and thin walls as demoulding strain, and sets out the four reviews that belong before tooling approval.

Thickness is how much compression travel a joint has available, not a measure of seal quality. This article explains compressed thickness, builds a four-line gap budget, shows why both thin and thick gaskets leak in opposite ways, and describes how thickness is confirmed on a sample rather than assumed from a drawing.

The choice between solid and sponge silicone is about voids and load paths, not softness. This article compares compression force, gap absorption, pressure capability and recovery, explains where each structure fails, and sets out a short sample test that settles the argument in the real housing before tooling is committed.

Tears at an inner hole usually start at the moulded edge, where the thinnest material meets the highest installation stress. This article explains why whitening is an early warning, how hole position and material bridges decide handling strength, why corner radius matters more than wall thickness alone, and which checks belong on the drawing rather than on the sample.

A gasket that leaves its groove between placement and final torque is not a bad moulding; it is a design that allows movement in the direction the assembly pushes. This article separates slide, roll and fold failures, compares locating holes, tabs and machined grooves, and sets out how to verify positioning on the real housing.

A joint can pass a dimensional check and still leak where the mating surface steps, curves or deflects between bolts. This article explains how to measure the real gap, why extra thickness rarely fixes uneven contact, how flat, lip and stepped sections behave differently, and what to confirm before a silicone seal tool is cut.

A silicone sink hanging basket keeps its mouth open only while the rim acts as a deep closed frame. Why depth beats wall thickness, where reinforcement belongs, how to index ovalisation on a sample.

A hanging drain bag is moulded flat and then deflected by its load, which reverses the fall and traps water. Loaded-shape design, hole placement, recess avoidance and a retained-water test.

Private label drain basket projects are decided by which features get tooled. How to separate cavity features from per-part cost, and what to settle before a quotation is useful.

Hole diameter decides what passes and what blocks; spacing decides whether the base carries a load. Open area, ligament width, pin deflection and a sample test with real food.

A silicone hanging drain bag sags because the strap acts as a short beam under an offset load. How eye position, strap depth, wall thickness and creep interact, and what to measure before tooling.

A hanging drain bag can pass every drainage test and still collect onion skin in the bottom seam. This article treats the interior as a cleaning surface, explains where residue settles and why, and lists the geometry to settle before the mould is opened.

Buyers often reach for a thicker wall when a hanging basket feels flimsy, then find the tab tears anyway. This article separates stiffness from strength, explains why the load path matters more than the nominal wall, and sets out the section decisions worth making before tooling.

A collapsible colander has to work as a container and as a flat disc, and the failure usually happens halfway between the two states. This article explains why a corrugated wall is stiff in the wrong direction, how the open angle interacts with the moulded hinge, and what to settle before the mould is cut.