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Packaging articles & guides

Technical notes from the production floor — flutes, specifications, VMI, and how to choose an automotive packaging supplier.

A JMP operator feeding carton sheet into the press — the sheet is the form a paper price increase takes by the time it reaches us. Report September 2026 paper price increase: the sixth wave Both of our paper producers raised again in September, six days apart. Eleven months: +Rp 2,200/kg, twelve increases, zero decreases — plus a Q4 signal.
Stacked corrugated sheets at the JMP warehouse — paper is the largest cost component in a carton box. Report Paper market report 2026: why prices keep climbing Nine months, ten paper price increases, zero decreases. What is happening upstream in containerboard — and what it means for your carton box pricing.
A JMP operator at the polybag cutting and sealing line, where rolls of film become individual bags. Polybag MOQ, and how many bags you actually get per 100 kg Polybag MOQ is measured by weight: 300 kg unprinted, down to 100 kg for common specs, 200 kg printed. Plus the arithmetic for converting a tonnage into pieces.
Natural LDPE film winding onto a roll on JMP's extrusion line, just past the nip roller. How to choose a polybag factory (and what to specify) Not every supplier calling itself a polybag factory extrudes its own film. Three questions that separate them, and the spec you should have ready before you request a quote.
JMP's sample maker machine building a carton box sample before mass production. What is the minimum MOQ for a custom carton box? Our standard MOQ starts at 500 pcs. But with a sample maker and digital printing, you can ask for 1 sample first to check, and we won't turn down a small order like 50 pcs.
A JMP operator forming a carton box on the production line — automotive packaging is built to spec, not pulled off a shelf. The complete guide to automotive packaging Why automotive packaging is different: many SKUs, batch traceability, and the risk of a stopped line. Packaging types, PO specs, and how to pick a supplier that can actually deliver.
A JMP staff member packing polybags one by one before dispatch — manual work that never appears as a line on a quotation. The hidden costs of choosing the wrong packaging supplier Price per piece is rarely the real cost. Seven hidden costs of a packaging supplier — downtime, expediting, quality, procurement, capital, revisions, compliance — and how to estimate them.

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A stitched corner on a JMP carton box — one of the constructions used when a box has to take a part’s load run after run. How to choose the right carton box for automotive components Classify the part, pick the flute (B/C/BC), set the basis weight, and specify print for traceability. A practical way to spec an automotive carton box without over-speccing.
PE polybag film being flexo-printed on the JMP production line. PE vs PP polybags: a material selection guide PE vs PP for component packaging: flexibility, clarity, heat resistance (~80°C vs ~120°C), and sealing. When to choose which, without over-speccing.
Cross-section of JMP carton flute profiles — the height difference between B, C, E and BC flute seen from the cut edge. Carton box flute guide: B, C, E, and BC — how to choose Carton box flute types (B, C, E, BC), the height of each profile, flute direction, and how to choose for automotive parts: stacking strength, print quality, and space.
A JMP pre-opened roll bag pulled from the roll — the perforation and the already-open mouth an autobag machine needs. Pre-opened bags on a roll for autobag machines: when and why Pre-opened LDPE bags on a roll for autobag machines on automated assembly lines — how they differ from an ordinary polybag, when they make sense, and why they're custom.
Two JMP operators working one machine on the Jakarta production floor — the kind of local manufacturing capacity counted toward TKDN. Joining the EV/TKDN supply chain: a packaging checklist for component suppliers New component suppliers entering the EV supply chain and meeting TKDN (local content rules) often buy industrial packaging systematically for the first time. The checklist to prepare.
Stacked carton blanks ready to ship in the JMP warehouse — stock held here rather than in yours. Flex-Stock vs holding your own stock: costing packaging warehousing Holding packaging stock yourself looks cheaper — until you cost the warehouse space, the cash tied up, and the changeover risk. How to compare it against a VMI program.
A JMP operator working a carton sheet — floor capability is the first thing to check in a prospective supplier. How to choose an automotive packaging supplier: what to check A checklist for choosing a carton box and polybag supplier for automotive: QC, capacity, MOQ flexibility, delivery reliability, and stock service — before you sign.
JMP admin recording a packaging call-off schedule — the core of the Vendor Managed Inventory programme. Packaging VMI (Vendor Managed Inventory): how it works, when it doesn't Your supplier holds the packaging buffer, you call it off against your line. How it works, what it asks of you, and when VMI is the wrong answer.
A stack of JMP corrugated carton boxes ready to ship. Box Compression Test (BCT): how it works, ECT values, and why it matters What Box Compression Test (BCT) is, how it's tested, the factors that affect the value, and a BCT-per-ECT reference table (32/44/51) for stack-strong packaging.
JMP kraft paper grade samples — the grammage of each layer is what adds up to the carton's base weight. How to calculate a carton's basic weight: Take Up Factor & worked example How to calculate a corrugated sheet's basic weight: Take Up Factor table per flute (A/B/C/E), the formula, and a step-by-step gsm worked example.

Already know what you need?

Corrugated carton box →

RSC, die-cut, custom flute & sizing, from 500 pcs.

PE/PP polybag →

For automotive components, thickness matched to part.

Flex-Stock (VMI) →

We hold your packaging buffer, ship per call-off.