Poly Bag Case Liners
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Product Introduction
Poly Bag Case Liners: Industrial-Strength Protection for Your Bulk Packaging Needs
When you're shipping bulk products, you need reliable protection that won't let you down. Poly bag case liners from Rizhao Jinlida Plastic Co., Ltd. provide enterprise-grade dampness and leak-proof boundaries designed for requesting mechanical applications. With over 30 a long time of fabricating skill and an 8,600㎡ cutting edge office, we create liners that bolster loads up to 50kg whereas keeping up predominant seal astuteness. Our progressed co-extrusion innovation guarantees reliable gage thickness and cut resistance over each liner. Serving 40+ nations around the world, we get it your require for contamination-free transport—whether you're dealing with nourishment items, chemical powders, or pharmaceutical fixings. Our products fit accurately interior drums, cases, and folded boxes, disposing of exorbitant auxiliary bundling and securing your profitable cargo from dampness degradation.
What Are Poly Bag Case Liners?
Think of them as your product's individual bodyguard amid transit.
These industrial-grade defensive boundaries are fabricated from high-quality polyethylene tars. They're planned to fit superbly interior your shipping containers—whether that's folded boxes, plastic cases, or drums.
The reason? Basic however critical.
They make a dependable boundary between your items and outside contaminants like dampness, clean, and cross-contamination. Not at all like standard plastic sacks, these liners are particularly designed to withstand the mechanical stresses of bulk transportation.
You won't have to stress approximately box immersion when transporting damp or oily merchandise. And you'll dispose of the costly require for double-packaging.

Key Applications Across Industries
Food Processing & Cold Chain Logistics
Your solidified meats and fish require more than fundamental assurance. Our liners avoid cooler burn and spillage all through the whole cold chain. Numerous nourishment processors select blue-tint liners for simple visual assessment and security compliance.
Chemical & Industrial Materials
Transporting tars, powders, or granulated chemicals? Dampness is your adversary. Our poly bag case liners give the dampness prohibition you require to anticipate clumping and keep up chemical immaculateness amid capacity and shipment.
Pharmaceutical & Medical Supplies
Cleanroom situations request sterility. When you're transporting bulk restorative components or dynamic pharmaceutical fixings (APIs), our liners act as a essential sterile boundary against microbial defilement and particulate ingress.
Agriculture & Bulk Foods
Seeds, grains, and agrarian items require breathable however defensive bundling. Our liners keep your items dry and contamination-free from stockroom to destination.

Technical Specifications
| Parameter | Specification |
|---|---|
| Material | LDPE / LLDPE / PE multilayer structures |
| Standard Sizes | 30×40cm, 35×45cm, 40×50cm, 110×110×130cm |
| Custom Sizes | Available based on your requirements |
| Thickness Range | 0.75 mil to 6 mil (customizable) |
| Load Capacity | 8kg to 50kg+ |
| Color Options | Clear, blue tint, or custom |
| Seal Type | Heat-sealed bottom and side seals |
| Testing Standards | ASTM F88 (seal strength), ASTM D1709 (dart impact) |
| Food Contact Compliance | FDA 21 CFR 177.1520 certified |
| Quality Certification | ISO 9001:2015 |
Superior Material Properties You Can Trust
Our poly bag case liners are manufactured using premium-grade polyethylene resins carefully selected for your application needs.
High Puncture Resistance
LLDPE construction provides exceptional tensile strength. Your liners won't tear during rough handling or when containing sharp-edged products.
Excellent Moisture Barrier
Low Moisture Vapor Transmission Rates (MVTR) keep humidity out. Your products stay dry even in challenging shipping conditions.
Chemical Resistance
Inert to most acids and alkalis. Safe for transporting a wide range of industrial chemicals and food products.
Flexibility & Durability
LDPE components ensure your liners conform smoothly to container shapes while maintaining structural integrity under weight.

Quality Control That Ensures Performance
We understand that liner failure isn't an option for your business.
That's why we implement rigorous testing throughout production:
Seal Integrity Testing (ASTM F88)
Every batch undergoes heat seal strength verification. We ensure bottom and side seals won't fail under your expected load weights.
Dart Drop Impact Test
We assess impact resistance to guarantee your liners survive rough handling during loading, transport, and unloading.
Gauge Consistency Verification
Ultrasonic measurement ensures uniform thickness. No thin spots that could lead to unexpected rupture.
Coefficient of Friction (COF) Testing
Your liners will be easy to open yet stable when stacked—preventing slippage in storage.
Why Partner With Rizhao Jinlida?
Customization Without Complexity
Need specific dimensions? Special printing? Anti-static properties? We offer flexible OEM/ODM services tailored to your exact requirements. Our team works with you to develop the perfect liner specification.
24-Hour Responsive Support
Questions about production timelines? Technical specifications? Our customer service team provides fast responses to keep your projects moving forward.
Proven Global Experience
With exports to over 40 countries, we understand international packaging standards and shipping requirements. You're working with a partner who speaks your industry's language.
Advanced Manufacturing Capabilities
Our facility operates high-speed computer-controlled equipment including gravure printing machines, laminating systems with photoelectric correction, and automatic bag-making lines. This means consistent quality and efficient order fulfillment.
Frequently Asked Questions
Q: What is the least arrange amount for custom sizes?
A: Our MOQ shifts based on customization necessities. Contact us with your details, and we'll give a custom fitted cite that fits your volume needs.
Q: Can you give food-grade certification?
A: Completely. Our liners comply with FDA 21 CFR 177.1520 for nourishment contact applications. We can give certification documentation with your order.
Q: How do you guarantee steady quality over huge generation runs?
A: We actualize strict quality administration beneath ISO 9001:2015 certification. This incorporates approaching fabric assessment, in-process checking, and last item testing for seal quality, gage consistency, and dimensional accuracy.
Q: What's the ordinary lead time for a standard order?
A: Standard sizes ordinarily transport inside 2-3 weeks. Custom orders require 3-4 weeks depending on detail complexity. We'll give exact timelines amid quotation.
Q: Do you offer tests some time recently putting a bulk order?
A: Yes, we can give tests so you can confirm quality and fit some time recently committing to generation quantities.
Q: Can these liners be utilized for both dry and damp products?
A: Certainly. Our liners are built to handle both applications. The dampness boundary properties make them perfect for damp or oily items whereas keeping up astuteness for dry merchandise.
Get Started With Industrial-Grade Protection
Our poly bag case liners' team is ready to discuss your specific requirements and develop the perfect liner solution for your application.
Contact us today: 18663311788@139.com
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