Materials and sizes
BOPP, PP and synthetic (HM) film, micron, widths and roll lengths explained.
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Book cover roll sizes: which width fits which book
Which book cover roll width fits which book: 11, 13, 14, 16 or 19 inch. A one-line rule, a size table, the lengths in each width, and what is in stock.
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BOPP vs PP vs HM book cover: which film is which, and which to buy
BOPP, PP and HM book cover film side by side for distributors: how each looks, which JPPL designs use which film, and what to stock.
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Cello tape vs BOPP tape: one roll, two names, and what the trade means today
Cello tape is the old name, BOPP is the film. Where the word cello came from, what a retailer means when he asks for it, and what to write on an order.
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How long does a plastic book cover last? What wears it out, and how to make it last
A plastic book cover should last as long as the notebook is in use. What actually wears covers out, thick versus thin film, and simple care tips.
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Notebook cover micron: what the number means and how to check it
What micron means on a notebook cover, the 50 micron floor in India's plastic rules, how thick covers run from 50 to 75 micron, and three ways to check it.
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Stationery tape sizes: 12, 18 or 24 mm, and which width does which job
Stationery tape comes in 12, 18 and 24 mm widths. What each width is for, how inches map to mm, and how a distributor can check width and length.
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Water-based acrylic adhesive tape: what it is, and why it suits school and office use
What water-based acrylic adhesive tape is, how it differs from rubber adhesive, where it works well, its real limits, and how to test a roll yourself.
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What is a synthetic book cover? HM film explained simply
A synthetic book cover is a plain coloured plastic cover, usually HM-HDPE film. What the name means, how it differs from BOPP and PP, and how to choose one.
