"Hard dry" sounds like the opposite of solventless, and that is where most of the confusion starts. On this machine the two words describe the same thing from different sides. No solvent goes into the adhesive, and the bond still sets hard before the sheet leaves the last roller.
The machine is the HDL1300A, a double station hard dry solventless laminating machine built by SINSTAR and supplied by XIAOPAI as authorised distributor. What follows is what the machine does, in the order an operator meets it: how the adhesive sets, how much of it goes down, what the roll sizes allow, and which work it suits.
WHAT HARD DRY ACTUALLY CHANGES
A conventional dry laminator dissolves adhesive in ethyl acetate, lays it on the film, then drives the solvent off in a drying tunnel. The tunnel is the biggest thing in the room, and the solvent is the reason for the extraction, the recovery system and the fire paperwork.
This machine takes the solvent out of that chain. The adhesive arrives with a high solids content and goes down as it is, without being thinned. Heating rollers bring it to the point where it flows, the two webs are nipped together, and the bond solidifies as the laminate cools on its way to the rewind.
Three things follow from that. There is no ethyl acetate in the working area, so the room no longer needs solvent extraction around the coating head. There is no drying tunnel, which takes a large load off the heating demand; the maker puts heating energy at 16 % of what a gravure dry laminator uses for the same work. And there is no solvent left to evaporate after the nip, so the bond is not waiting on a tunnel to finish it.
HOW THE ADHESIVE GETS ON
Coating weight on this machine runs from 1.5 to 4.5 grams per square metre. That range covers the thin side, where a food laminate needs just enough adhesive to hold without clouding the print. It also covers the heavy side, where a board laminate has to survive a die-cut and a fold.
Two details matter more than the range itself. The coating amount is entered directly as a number and measured directly on the running web, so an operator sets grams per square metre rather than chasing a roller gap by feel. And the adhesive is applied at working viscosity without solvent to thin it, which is what makes the low coating weights repeatable.
Against gravure dry lamination the maker's figure is 0.3 grams per square metre less adhesive for the same bond, with zero adhesive waste when an order changes. Both numbers depend on the substrate and the pattern, and both are worth asking about on your own material rather than taking from a page. Coating weight is also the first thing to drift when line speed, adhesive temperature or nip pressure move, which is why the coating window is worth understanding before the machine arrives.
Adhesive choice sets the rest. A hot-melt adhesive that sets on cooling behaves nothing like one that needs moisture, and the machine's heating rollers are set for the first kind.
THE STATIONS AND THE ROLLS
The machine takes webs up to 1,350 mm wide, with 800 mm maximum diameter on both the unwind and the rewind, and shaftless loading at the unwind. Shaftless matters on a wide machine. A 1,350 mm roll on a shaft is a two-person lift with a crane booking, and every roll change costs the same time whether the line runs well or badly.
An 800 mm rewind diameter is the other half of that arithmetic. The bigger the finished roll, the longer the run between doffs, and the fewer the joins that reach the customer. It also sets how much floor the machine needs behind it, so the drawing matters as much as the number.
The name points to two stations rather than one, and what that buys depends on how the second one is used. A roll prepared while the first is still running turns a stopped line into a planned splice, and a short-run shop feels that difference on every order. Ask for the splice sequence in writing before you compare machines, because that is where the time actually goes.
SPEED, AND WHAT IT BUYS
Maximum laminate speed is 350 m/min. At the full 1,350 mm width that is roughly 28,000 square metres an hour at the top of the range. It is a useful number for costing a shift and a misleading one for planning a factory.
Real output is set by the adhesive, the substrate and the patience of the operator, in that order. A 12 micron PET at 1.5 gsm will run near the top of the range. A 350 gsm board with a heavy coat will not, and pretending otherwise is how a line gets specified twice.
The honest way to use the number is as a ceiling. Take the speed your material actually holds, multiply by the width you actually buy, and that is the machine you need. The rest is headroom for the day the job changes.
WHAT IT RUNS ON
The applications split into two groups, and the split is useful when you are deciding whether this is the right machine at all.
The first group is paper and board: cardboard, art paper, white card, gray board and labels, where the laminate has to come out flat. Warping and wrinkling on a board laminate usually come from moisture and from tension, and a process that adds no solvent adds no moisture with it. Paper and board coating is its own field, and the barrier work done on those substrates shows how much the surface decides.
The second group is thick or rigid film: PET, PC, PVC, BOPP, and optical or protective films, where alignment and tension control carry the quality. On those, the bond is only half the job; the other half is that the web arrives at the nip flat and stays flat. Surface condition at the coating head decides how well the adhesive wets, and the treatment at that interface is where most bonding arguments begin.
Luxury packaging, gift boxes and premium print sit across both groups, because they combine a board with a film and refuse to accept a bubble. Food, pharmaceutical and personal care work sits at the other end. There the absence of solvent is a condition of the job rather than a cost argument.
WHAT TO CHECK BEFORE YOU BUY
Four questions decide whether this machine fits, and none of them is about speed.
The first is the substrate stack, with thickness. A machine set up for 12 micron film is not the same machine that runs 350 gsm board, and the difference shows up in the web path rather than the brochure.
The second is the adhesive. Bring the technical data sheet, the working viscosity and the temperature curve, then ask what the heating rollers have to do to keep it there across a shift.
The third is the coating weight you actually run, not the range. If every job sits at 4 gsm, the thin end of 1.5 to 4.5 is headroom you are paying for and never using.
The fourth is service. A laminator is a press with a coating head, and the people who can set the nip and read a tension curve are worth more than the people who can sell the machine. Ask who attends, how far away they are, and what the spare parts list looks like for the rollers.
WHERE IT SITS IN THE RANGE
This machine is the heavy end of a range that starts with narrower and simpler lines. The Fi9 solventless laminating machine covers general film work. The i9 two-layer machine handles a two-ply structure in one pass, and the S1 digital machine is the one for tight tension control on thin or optical film.
All of them come from SINSTAR, with the documentation and the service route attached. Heating energy on a solventless line is not the whole story, and the dryer side of a conventional line is worth comparing before the decision is closed.
XIAOPAI supplies SINSTAR solventless laminating machines as authorised distributor. Figures in this article are the maker's published values for the HDL1300A double station hard dry machine. The headline numbers are 350 m/min, 1,350 mm web width, 800 mm unwind and rewind diameter, shaftless loading, and 1.5 to 4.5 gsm coating weight. Configuration, delivery and commercial terms are confirmed per project.
