Honeycomb Lines: Heat, Press, and the Two Speed Windows

A honeycomb paperboard line on /products/honeycomb-line-glue is specified as two speed windows, not one machine speed. Core-strip glue is for core making at about 10–200 m/min. Facing glue is for face laminating at about 4–30 m/min. Quoting a single “line speed” in an inquiry usually means the two sections have been collapsed into one grade.

Heat is a speed tool, not a condition the glue requires before it will bond. A slower startup can run with no heat at all. Turning the heat on is how the same grade raises speed. If the line you have, or the line you are buying, spends part of the shift at the slow end, do not specify a heated-only setup.

Cold press and hot press are both available, on the core grade and on the facing grade. Name which press each section actually has. A nip and a platen do not ask the glue for the same open time, and the dry-speed choice — slow, fast, quick, or instant — follows the stack, not the name of the press.

How to describe the line in one paragraph

Core section: target speed inside 10–200 m/min, heater yes or no, cold press or hot press.

Facing section: target speed inside 4–30 m/min, heater yes or no, cold press or hot press.

How soon the board has to be dry enough to stack or cut.

Whether the facing step adds starch. That chooses the mixing route. It does not change the speed window.

What heat does not do

It does not turn core glue into facing glue. It does not license the facing water figures — 25 kg of powder with 30–40 kg of water, or 25 kg with 40–60 kg — onto the core section. It does not replace a white-liner grade. Boards that must not yellow still go through /products/neutral-adhesive as an appearance question.

A practical order of decisions

First, split the grades. Second, put each section in its speed window. Third, decide whether that section’s heater will be on for the trial. Fourth, pick dry speed so the board can stack. Fifth, mix the facing grade on the route that was ordered. The mixing steps are in “Honeycomb Facing Glue: Floor Mixing for the Two Routes.” This page only places the heat and the press.

If the trial is already running and speed is the complaint, write down which section is short of its window, whether the heater on that section is on, and whether the coat is still laying evenly. Raising heat on a batch that will not coat just moves the defect. The next step is the trial-day record, not a different product family.