Multi-layer Paper Square-bottom Bag
25kg Multi-layer Kraft Paper Square Bottom Open Bag - Product Details
1. Product Introduction (Industry Pain Points & Exclusive Solutions)
1.1 Industry Common Pain Points
Poor load-bearing capacity and easy damage: Ordinary single-layer or inferior multi-layer kraft bags on the market adopt insufficient paper weight and reduced layers. Under 25kg heavy load, they are prone to cracking, bottom bursting and side tearing, resulting in large material loss and high transportation damage rate.
Irregular shape and unstable stacking: Traditional round-bottom and irregular bags cannot stand upright after filling, leading to skewed stacking, large warehouse occupation, easy collapse and low loading & unloading efficiency, with high risk of stack collapse.
1.2 Exclusive Product Solutions
Adopting a 2-3 layer high-quality new kraft paper + optional PE waterproof inner liner composite structure, the bag features thick and tough paper with excellent load-bearing performance. It will not tear or crack when fully loaded with 25kg materials, greatly reducing material loss and transportation damage rate.
Equipped with an upgraded integrated square bottom forming process, the bag is regular and three-dimensional, capable of standing independently after filling. The flat and stable stacking structure effectively improves warehouse utilization and loading & unloading efficiency, completely avoiding stack collapse risks. The open-top design enables fast filling and is compatible with various automatic and semi-automatic filling equipment.
Supported by high-definition flexographic printing with clear patterns and characters, friction resistance and anti-falling ink performance, it reserves sufficient areas for brand display. Customization services are fully available to meet the demands of food, chemical, building material, agricultural material, feed and other industries, including customized size, layers, waterproof inner liner, LOGO and patterns.
Made of environmentally friendly, non-toxic and degradable raw materials, the product meets domestic and foreign environmental protection and food contact standards, suitable for both domestic sales and foreign trade export scenarios.
2. Product Technical Parameters
|
Parameter Item |
Detailed Specification |
|
Product Name |
25kg Multi-layer Kraft Paper Square Bottom Open Bag |
|
Standard Load-bearing |
25kg standard (adjustable from 20kg to 30kg) |
|
Material Configuration |
High-quality pure wood pulp kraft paper (brown/white optional) + optional PE moisture-proof inner liner |
|
Paper Layers |
2/3 layers optional, customized layers available |
|
Paper Basis Weight |
70-90g per layer (standard); 100-120g customized thickened version available |
|
Regular Size |
50*73cm, 52*75cm (full-size customization supported) |
|
Bag Structure |
Three-dimensional square bottom, open top, high-strength glued bottom |
|
Core Performance |
High load-bearing, tear resistance, moisture & dust proof, three-dimensional shape, eco-friendly and degradable |
|
Printing Technology |
High-definition flexographic printing, accurate color registration, anti-falling ink, multi-color customization available |
|
Application Scenarios |
Flour, starch, feed, chemical powder, resin particles, building material powder, agricultural raw materials, etc. |
|
Sealing Method |
Sewing sealing, heat sealing, tying sealing optional |
|
Environmental Grade |
Food grade / Industrial grade optional, odorless, recyclable and degradable |
3. Product Advantages (VS Peer Products)
Aiming at the common defects of ordinary 25kg kraft bags on the market including high damage rate, poor moisture resistance, easy deformation and low-grade appearance, our products have achieved comprehensive upgrades in material selection, craftsmanship, performance, customization and quality with outstanding competitive advantages:
|
Comparison Dimension |
Ordinary Peer Products |
Our 25kg Multi-layer Kraft Paper Square Bottom Open Bag |
|
Raw Material Selection |
Made of recycled waste paper and mixed pulp paper; thin texture, poor toughness, many impurities, easy to tear and powder/fade under heavy load |
Adopts 100% new pure wood pulp kraft paper with uniform thickness, excellent toughness and zero impurities; load-bearing and tear resistance far exceed industry standards |
|
Structural Craftsmanship |
Simple bonding and rough bottom stitching with uneven glue layer; easy bottom cracking under force and soft bag body without three-dimensional sense |
Adopts fully automatic integrated square bottom forming technology with white latex sealing at the bottom; uniform stress distribution, upright and three-dimensional bag body with excellent vertical stability |
|
Moisture & Dust Protection |
No inner liner or inferior thin liner with poor sealing performance; easy to absorb moisture and accumulate dust, unable to adapt to humid storage environments |
Optional thickened PE waterproof and moisture-proof inner liner with multi-layer composite sealing structure, effectively isolating water vapor and dust to keep materials dry and clean for a long time |
|
Load-bearing Performance |
False load-bearing marking; the damage rate reaches 8%-15% when fully loaded with 25kg goods, prone to breakage and material leakage during transportation and stacking |
Actual test proves zero tearing and zero bottom breaking under 25kg full load; the damage rate is lower than 0.5%, ensuring stability in long-distance transportation and multi-layer stacking |
|
Printing Effect |
Blurry printing, color registration deviation, easy ink falling and messy layout with no brand texture |
High-definition flexographic printing with accurate color registration, clear handwriting & patterns and friction resistance; neat and beautiful layout greatly enhances brand grade |
|
Customization Capacity |
Only fixed-size finished products available; no support for size, layer and printing customization with single application scenarios |
Full-dimensional customization supported, including size, layers, color, inner liner, LOGO, patterns and packaging, adapting to all industry scenarios |
|
Environmental Protection Quality |
Non-environmental materials containing trace harmful substances; no formal inspection reports, unavailable for food packaging and export |
Non-toxic and eco-friendly materials with available food-grade test reports; biodegradable and compliant with domestic sales and foreign trade export standards |
4. Company Strength Introduction
Yishuo Packaging Products Co., Ltd. was established in 2010 and has 16 years of professional R&D and production experience in packaging industry. We focus on the segmented field of 25kg heavy-duty kraft bags and are proficient in adaptive packaging technologies and upgrade solutions for various materials.
Covering an area of 12,000 square meters, our factory is a modern professional manufacturer integrating R&D, production, customization and export of kraft paper packaging bags and eco-friendly packaging products. We specialize in heavy-duty packaging for industrial, chemical, food and pharmaceutical additive industries, and have become a high-quality supplier with large scale and good reputation in the domestic 25kg packaging industry.
5. Production Process & Supply Capacity
We adopt a complete closed-loop standardized production process: Customer demand communication → Scheme customization & sample confirmation → Raw material procurement & incoming inspection → Intelligent slitting & compounding → Integrated bag forming → Printing processing → In-process quality inspection → Finished product full inspection → Standard packaging → Warehouse storage → Pre-delivery verification.
Every link is equipped with special personnel for operation and quality inspection. The standardized and clear process eliminates defective products from the source and ensures stable and consistent quality of each batch of products.
6. FAQ
Q1: What is the MOQ? Is small-batch customization supported? A: Stock products have no MOQ limit and support scattered procurement. Customized products have a conventional MOQ of 5,000 pieces, and small-batch trial customization is acceptable. New customers can purchase a small number of samples for quality testing before mass cooperation to meet diverse procurement needs.
Q2: Can you provide samples? Are samples free of charge? A: Free samples are provided, and customers only need to bear the freight. We can provide samples of different layers, sizes and printing styles, and customize exclusive samples according to your material characteristics for adaptive testing.
Q3: What is the order delivery cycle? A: Stock orders will be shipped within 24-48 hours after payment. Conventional customized orders take 10-15 working days. Large-batch foreign trade orders and special-process customized orders take 15-30 working days. Rush orders can be arranged for priority production and delivery.
Q4: What are the packaging and logistics methods? A: Finished products are packed with standard waterproof stretch film and pallets, which are compression-resistant and damage-proof to avoid friction damage during transportation. Domestic logistics adopts special line and full truck transportation, with express and LCL optional. Foreign trade supports sea, air and land transportation, and we can assist with customs declaration and clearance procedures.
Q5: Do you support OEM/ODM customization? What contents can be customized? A: Full-range OEM/ODM private customization is available. Customizable contents include size, paper layers, basis weight, waterproof inner liner, bag color, brand LOGO, text patterns, multi-color printing and exclusive packaging styles. We can also optimize the packaging structure and provide exclusive packaging solutions according to material characteristics with one-on-one professional technical docking.
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