July 21, 2026 · Packaging Guides
A useful quotation for custom printed poly bags in Karachi requires more than a logo and a bag size. Material, thickness, construction, artwork, colour references, print sides, quantity and delivery all influence feasibility and commercial terms. If suppliers receive different information, their prices will not represent the same bag.
Define what the bag must pack and do
Begin with the product, not the artwork. State its dimensions and weight, filling and sealing method, distribution route and common failures. Mention sharp corners, oils, dust, moisture or repeated opening where relevant. Do not claim barrier, food-contact or security performance unless the requirement and evidence are agreed.
When replacing a bag, provide an unused sample and mark what must stay the same or change. A photograph cannot reliably show micron or material structure.
Measure the finished bag construction
Write dimensions in a fixed order and label every feature. The plastic bag size guide can help establish a starting fit; confirm manufacturing dimensions before ordering.
| Specification field | What to state |
|---|---|
| Finished width and length | Usable dimensions, unit of measure and measurement method |
| Gusset | Side or bottom gusset and whether quoted open or folded |
| Seal and opening | Bottom seal, side seal or other required construction; show opening direction |
| Handle, flap or lip | Type, size and position from an agreed edge |
| Holes or perforation | Diameter, spacing, position and intended function |
| Packing format | Loose, bundled, wicketed or roll format if required and feasible |
A dimensioned drawing should show the front, opening, seal, gusset folds and print orientation. Keep finished-bag and print dimensions separate.
Specify material, thickness and appearance
State LDPE, HDPE or another proposed structure when known; otherwise describe the required performance and appearance. LDPE is often considered for a softer, clearer bag, while HDPE film is generally crisper and more translucent. Material initials alone are not a complete standard.
- Nominal micron per layer and agreed tolerance
- Clear, translucent, milky, coloured or opaque appearance
- Required stiffness, softness, slip or grip described measurably where possible
- Packed-product weight, edges and expected handling
- Seal, tear, puncture or load test used for acceptance
- Any surface-treatment requirement associated with printing
Plastic Bags Karachi handles the request as a specification-led plastic bags manufacturing enquiry: the proposed size, material, micron, conversion and printing need to work together. A polythene sheet manufacturer may understand film extrusion, but printed bag conversion also involves treatment, ink, plate, registration, sealing and repeat control. Confirm the complete scope rather than assuming every polyethylene-film source offers the same process.
Prepare artwork that can be quoted accurately
Send editable vector artwork plus a PDF visual. Package fonts and linked graphics; a screenshot is not a reliable production file. Identify colours with agreed references and distinguish printed white from unprinted film.
| Print question | Required answer |
|---|---|
| How many colours? | List colours for each printed side, including white where applicable. |
| Which sides are printed? | Front only, back only, or both; attach an orientation sketch. |
| What is the print size? | Give maximum width and height plus position from fixed edges. |
| What level of coverage? | Show solid areas, fine type, screens, barcodes and reverses in the artwork. |
| What colour standard? | Provide agreed spot-colour references or an approved physical target. |
| What must be readable? | Identify small text, batch panels, symbols and barcode verification needs. |
Flexographic or gravure printing
Artwork complexity, colours, repeat length, material, volume and finishing requirements affect process selection. Use the plastic bag printing guide, then ask the manufacturer to state the proposed method and commercial implications.
Give quantities in comparable units
State trial, first-order, repeat and annual quantities separately. Clarify pieces, kilograms or rolls and the packing quantity. The pieces-per-kilogram calculator estimates yield from dimensions, density and micron; actual yield varies with construction and tolerances.
Searches such as 1 kg plastic bags and plastic bags price in Karachi are too broad for printed-bag decisions. A kilogram of small bags contains more pieces than a kilogram of larger, thicker polybags. Tooling, ink coverage, material, conversion, volume, packing and delivery may affect quotations. Compare unit price, weight basis, tooling treatment, tax, freight and validity; no current price is implied here.
Use evidence when comparing packaging companies
People searching best packaging company Pakistan want a shortlist; the phrase is comparison intent, not proof of a winner. Score technical responses, artwork control, sample approval, tolerances, inspection, communication and delivery terms.
A SITE area packaging company or Korangi packaging company may simplify sample review or local delivery, but location is not proof of quality. Every bidder should quote the same controlled specification.
For external context, see Tanvir Packages’ custom printed polybags information and polybag quotation page. The FlexiHold packaging site offers another market reference. External pages can inform a shortlist, but your written RFQ and approved sample should control the comparison.
Send one complete quotation pack
- Product description, dimensions, weight, handling and application
- Bag drawing with finished size, gusset, opening, seal and special features
- Material, micron, colour, transparency and performance requirements
- Editable artwork, PDF visual, print colours, sides, size and position
- Trial, first-order, repeat and annual quantities in named units
- Packing, labelling, delivery address and required date
- Current sample, reference photographs and acceptance tests
- Commercial response format, including tooling, freight, tax and validity
Upload the information through the custom packaging RFQ form, and use the buyer guides hub for related material and measurement checks.
Approve before full production
Review the written bag specification and artwork proof as linked approvals. Confirm dimensions, tolerances, opening, seal, material, micron, film colour, print position, colour references, readable details, packing and delivery terms. Define sample or trial approval where fit, strength or print appearance is critical. Keep the approved revision with the purchase order.
Frequently asked questions
What is the minimum information for a printed-polybag quote?
Provide the application, finished bag drawing, material, micron, printing sides and colours, artwork, quantity, packing and delivery location.
Can a logo image be used to calculate the final print price?
It may support an initial review, but accurate costing can require print dimensions, colour separation, coverage, editable artwork and the final bag layout.
Should printed bags be ordered by pieces or kilograms?
Either basis may be quoted, but the conversion assumptions must be clear. Compare the same dimensions, micron, tolerances and yield basis, then confirm packing quantities.
What should be approved before manufacturing?
Approve the written construction, artwork revision, colours, print orientation, material, micron, tolerances, sample requirement, packing and commercial terms.