Size Press Orange Peel: Film Splitting at the Nip Exit Orange peel after film sizing appears as a fine, irregular texture on the paper surface, sometimes accompanied by uneven gloss. It can develop when the wet sizing film separates unevenly as the sheet leaves the press nip. The film stretches between the paper and applicator
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Blown Film Main Nip Roll Covers: What to Specify If your existing blown film nip rollers have been sealing the bubble, pulling the film steadily, and leaving the folded edges undamaged, start with the original drawing or confirmed specification. When the film structure, haul-off speed, and nip arrangement remain unchanged, the existing rubber cover specification
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Blown Film Bubble Air Leaks at the Main Nip When a blown-film bubble gradually becomes smaller, first check whether air is escaping through the main nip. A small gap beside a folded edge, a damaged roller surface, or uneven contact between the two rollers can allow air to escape while the film continues moving. Start
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Glass Washer Conveyor Rolls: Choosing Rubber Covers Glass washer conveyor rollers work under different conditions in the washing, drying, and offload sections. Wet-section rolls need enough grip to move glass through water and cleaning solution. Rolls farther downstream contact freshly rinsed or cleaned glass, where surface contamination and cover damage become more critical. Before ordering
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Marks on Glass After Washing: When to Check Conveyor Rolls Marks on glass after washing may appear as pale water rings, straight scratches, oily smudges, or evenly spaced impressions. Start with the appearance of the mark, then find the first stage where it shows up. Water rings suggest rinse residue or drying problems. Scratches call
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Can Decorating Ghosting: Ink Distribution and Form Roll Contact A faint shape appears inside a solid printed area on a decorated can. If it matches a blank area elsewhere in the artwork, the defect may be can decorating ghosting. Ink left unused at a non-image area can remain on the form roll and be released
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Can Decorating Ink Roll Covers: What Replacement Requires Replacing a rubber-covered ink roller on a two-piece can decorator starts with the exact roller position and original specification. These machines print on formed can bodies. Ink form rollers contact the printing plates, while other inker rolls distribute and transfer ink. Each position has its own requirements.
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Corrugated Box Feed Roll Covers: Grip Without Board Crush When a corrugated box feed roller starts slipping or needs replacement, first identify the feed/pull roller pair on the flexographic press. Check whether both rollers are rubber-covered or the rubber feed roller works against a lower metal pull roller. Next, compare the original cover specification with
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Wide-Belt Sanding Contact Roll Covers: Selection Guide Replacing a wide belt sander contact roll starts with the sanding head’s job. Thickness calibration needs firm support for material removal. Pre-sanding prepares the board for the next stage, while lacquer finishing requires more controlled contact. These operations may use steel drums, rubber-covered drums, or platens. If the
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