Middle Sealing Bag (Back Sealing Bag) Factories & Factory in Malaysia

High-barrier protective structures, custom flexographic & rotogravure printing, and local supply chain optimization for ASEAN markets

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35+
Years Manufacturing Experience
100%
CCD Online Inspection Quality
GMP
Class 100,000 Clean Workshop
50+
Countries Globally Exported

Industrial Dynamic: Middle Sealing Bags in Malaysia

Mapping out the growth, regional compliance, and barrier requirements for industrial buyers in Selangor, Penang, and Johor Bahru.

Tropical High-Barrier Needs

Malaysia's average humidity levels hovering around 80% necessitate strict MVTR (Moisture Vapor Transmission Rate) limits. Our back-sealing bags leverage multilayer lamination (PET/Alu/PE or PET/VMPET/PE) to protect dry solids, powders, and instant beverages from oxidation and clumping.

JAKIM Halal Packaging Readiness

Compliance is paramount in local manufacturing hubs like Shah Alam and Pasir Gudang. Our raw materials, including food-grade solvent-free adhesives and heavy-metal-free inks, align with standard Halal production line parameters, ensuring ease of clearance during auditing.

FMCG Packaging Acceleration

Driven by e-commerce expansion in Kuala Lumpur and Penang, request for lightweight back-seal bags (fin/lap seal) has surged. This format optimizes shipping volume, reducing regional postal overhead by up to 22% compared to rigid plastic tubs.

Technical Specification: Engineering Optimal Protective Bags

A middle sealing bag (also termed back sealing or fin seal pouch) utilizes a continuous back seam to deliver a smooth face on both sides. This creates an un-interrupted canvas for complex branding designs, while the vertical seam provides robust mechanical stability during high-speed vertical form-fill-seal (VFFS) operations.

  • Substrates: PET, BOPP, Kraft Paper, Nylon (for puncture resistance)
  • Barrier Cores: Aluminium Foil, VMPET (metalized polyester), EVOH co-extrusions
  • Thermal Sealing Layers: LLDPE (low-density polyethylene) or CPP (cast polypropylene) for retort conditions
  • Thickness Spectrum: From 60μm (high-yield film rolls) up to heavy-duty 160μm configurations
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Industrial Manufacturing of Middle Sealing Bags

Dongfa Printing: Sourcing Resilience for Global Brands

Why international brands bridge domestic logistics with our advanced printing and packaging hub.

GMP Standardized Cleanroom

Our packaging film rolls and pouches are converted within certified Cleanroom environments. This eliminates dust contamination during high-speed printing, making our materials fully qualified for dairy, medical, and high-purity food applications.

CCD Auto-Detection In-line

We deploy high-definition CCD camera inspection arrays directly on our rotogravure printing units. Any chromatic aberration, hair-line micro-fissure, or ink smear of over 0.2mm is marked and isolated instantly, assuring consistent structural integrity.

Direct Port Klang Logistics

Through robust shipping partnerships, we ensure containerized maritime freight from our primary loading docks reaches Port Klang (Kuala Lumpur), Port of Penang, and Port of Tanjung Pelepas within 7-10 working days, reducing domestic warehousing costs.

About Dongfa Printing

Dongfa Printing Co., Ltd. has over 35 years of professional experience in printing and packaging manufacturing. We provide all kinds of packaging, specialize in the development and production of various liquid packaging films and bags, suitable for use in pasteurization and retort steam sterilization processes, as well as different types of spout bags and sealing cup films.

Based on the printing machine with online quality inspection equipment and GMP workshop, we adhered to excellent materials, professional production and strict quality control. We can provide you superior products and best service.

Our Service Portfolio

Since its establishment, Dongfa Printing has been committed to providing customers with efficient and high-quality printing services. Our business scope covers the entire process from design, plate making to printing and binding. Whether it's commercial printing or personalized customization, we can fulfill customer needs with our professional technical skills and attentive service.

Quality Control System

Our company is dedicated to producing custom flexible packaging for food, medicine, daily-use products, and chemical products. We offer a wide range of products, including spout bags, retort bags, back sealing bags, three-side seal bags, stand-up pouches, quad-seal pouches, flat-bottom bags, zipper pouches, and customized roll films. We consistently use high-quality materials for professional production and strict quality control.

Corporate Values

Our corporate values are "integrity, professionalism, innovation, and win-win." We uphold integrity as our foundation, professionalism as our basis, innovation as our driving force, and strive for win-win outcomes with customers, employees, and society. These values not only guide our business practices but also inspire our team to continuously move forward.

We have a professional and knowledgeable team ready to serve you. We sincerely welcome you to visit our company for further business and cooperation opportunities!

Our Cooperative Partners

Delivering high-barrier packaging solutions and manufacturing excellence globally.

Localized Application Scenarios in Malaysia & Globally

Packaging engineered to withstand extreme climates and satisfy specific retail and industrial demands.

Commercial Premix Coffees

Malaysia is renowned for its instant coffee premixes (e.g., White Coffee, Teh Tarik). Our back-sealing bags feature high metallized barrier cores to isolate hygroscopic powders from moisture, ensuring extended freshness and shelf life.

Spices, Pastes & Sauces

With Malaysia's rich culinary export industry, packaging must withstand high levels of oils, acids, and thermal retort processes. Our nylon-laminated middle sealing pouches offer high puncture and chemical resistance to prevent leakage during transit.

Industrial Cleanroom Pack

From microchip components in Penang to medical devices, we provide specialized anti-static back seal pouches that maintain sterile micro-environments, shielding sensitive electronic components from static build-up and oxidation.

Complete High-Barrier Packaging Portfolio

Explore our full line of industrial packaging pouches with customized functional properties and size parameters.

Knowledge Base & FAQ

Technical and procurement questions answered by packaging engineering directors.

1. What parameters dictate the barrier capability of a back-sealing bag in high-humidity zones like Malaysia? +
The core barrier layers, mainly aluminum foil (AL) or metalized polyester (VMPET), determine the bag's performance. For high humidity, we suggest utilizing an AL layer which provides a physical barrier near 0 cc/m²/24h OTR and 0 g/m²/24h MVTR. For cost-efficiency, a multi-layer composite consisting of PET/VMPET/PE provides high protection for short-to-medium shelf cycles.
2. Can your middle sealing bags undergo retort and pasteurization? +
Yes, our bags can be custom engineered for both processes. We utilize customized retorting-grade cast polypropylene (RCPP) films combined with high-grade polyurethane solvent-free adhesives. This allows the pouches to withstand sterilization temperatures of 121°C to 135°C without delamination or burst failures.
3. How do back sealing pouches compare directly to 3-side seal pouches? +
A back sealing pouch places the seal vertically in the center, allowing the front and back face margins to be smooth and continuous, maximizing branding surface. 3-side seal pouches have flat edges which reduce the volumetric interior volume, whereas back-seal pouches form a slight round tube capacity, giving up to 15% more volume capacity for products of identical film width.
4. What is the typical lead time for custom runs to Malaysia? +
Standard production takes 14 to 21 days from plate approval and art proof validation. Shipping from our facility to Port Klang or Port of Penang usually spans 7 to 10 days by sea, providing a secure, predictable logistics loop.
5. Do you supply biodegradable or recyclable barrier back sealing options? +
Yes, we produce eco-friendly mono-material PP and PE laminated structures, as well as Kraft Paper composite films. These can be integrated with biodegradable PLA (Polylactic Acid) sealant layers to match global environmental regulations.

Looking to optimize your flexible packaging supply chain?

Contact our technical team for custom film material configurations, custom thickness calculations, and logistics planning.

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