Introduction
Custom flat plastic bags are widely used in food packaging, industrial components, medical products, retail, and e-commerce. However, many buyers request quotations with incomplete specifications, making it difficult for suppliers to provide accurate pricing.
Preparing the right information before requesting a quotation helps reduce revisions, shorten communication time, and receive a more competitive offer.
This guide explains everything you should prepare before ordering custom PE flat bags.
1. Determine the Bag Dimensions
The first step is confirming the finished bag size.
Typical dimensions include:
- Width
- Length
- Bottom seal (if applicable)
- Side seal
For example:
- 150 × 250 mm
- 300 × 450 mm
- 500 × 700 mm
Always specify whether the dimensions are internal or external measurements.
2. Select the Right Material
Material affects:
- Strength
- Transparency
- Flexibility
- Cost
Common options include:
| Material | Best For |
|---|---|
| LDPE | Premium appearance, flexible packaging |
| HDPE | Lightweight, economical packaging |
| LLDPE | Heavy-duty applications |
| Co-extruded Film | High-performance packaging |
If you're unsure, provide your product application and your supplier can recommend the most suitable material.
3. Specify Film Thickness
Thickness is one of the biggest cost drivers.
Typical ranges include:
- 20 μm
- 30 μm
- 40 μm
- 50 μm
- 60 μm
- 80 μm
- 100 μm+
Choosing a thickness based on product weight prevents unnecessary material costs.
4. Decide Whether Printing Is Required
If branding is important, prepare:
- Logo
- Artwork (AI/PDF preferred)
- Number of print colors
- Printing position
- Pantone colors
Good print files reduce setup time and improve printing quality.
5. Choose Bag Features
Depending on the application, optional features include:
- Air holes
- Hang holes
- Euro slot
- Tear notch
- Vent holes
- Warning text
- Barcode printing
- Batch coding
Selecting only the necessary features helps optimize cost.
6. Estimate Order Quantity
Quantity has a direct impact on unit price.
Suppliers usually quote based on:
- Material consumption
- Printing setup
- Production efficiency
Larger production runs generally achieve lower unit costs.
7. Packaging Requirements
Consider how the bags should be packed.
Examples include:
- Bulk packed
- 100 pcs per pack
- Carton packed
- Export palletized
- Individual retail packaging
Packaging affects labor cost and shipping efficiency.
8. Compliance Requirements
For regulated industries, inform your supplier if certification is required.
Examples include:
- Food-contact compliance
- RoHS
- REACH
- FDA
- EU regulations
Providing these requirements early helps avoid delays during production.
9. Delivery Requirements
Include:
- Delivery country
- Shipping method
- Target lead time
- Destination port
These details help suppliers recommend the most suitable logistics solution.
10. Request Samples Before Mass Production
Before placing a large order, request samples to verify:
- Material
- Thickness
- Printing
- Dimensions
- Sealing quality
Sampling reduces production risks and ensures the final product meets expectations.
Information Checklist Before Requesting a Quote
A complete inquiry should include:
✅ Bag dimensions
✅ Material
✅ Thickness
✅ Printing artwork
✅ Quantity
✅ Special features
✅ Packaging requirements
✅ Compliance requirements
✅ Shipping destination
Providing complete specifications enables suppliers to prepare faster and more accurate quotations.
Conclusion
Custom flat plastic bags can be tailored to almost any packaging application, but accurate quotations depend on complete product specifications.
By preparing the essential information before contacting a manufacturer, buyers can shorten communication time, avoid misunderstandings, and receive quotations that better match their actual requirements.
Whether your project involves simple clear bags or fully printed industrial packaging, working with an experienced manufacturer ensures consistent quality, efficient production, and dependable delivery.
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