Standard Woven Bag Specifications:30cm-----75cmWide, with unlimited length, suitable for both standard and full-color printing.
Application Range
Vegetables and other agricultural product packaging
Subsequently, replacing paper-based cement packaging bags.
Due to product resources and pricing issues, our country has6010 billion woven bags for cement packaging, accounting for a significant portion of bulk cement packaging85%Above, with the development and application of flexible container bags, plastic woven containers are widely used for marine, transportation, and packaging of agricultural and industrial products. In agricultural product packaging, plastic woven bags are extensively used for packaging aquatic products, poultry feed, covering materials for farms, sunshade, windproof, and hailproof sheds for crop cultivation, etc. Common products include feed woven bags, chemical industry woven bags, putty powder woven bags, urea woven bags, vegetable mesh bags, and fruit mesh bags, etc.
Food Packaging
Rice, flour, and other food packaging is increasingly being replaced by woven bags. Common types include rice woven bags, flour woven bags, corn woven bags, and other woven bags.
Geotechnical Engineering
From80Since the development of geotextiles, the application fields of plastic woven fabrics have been expanded, widely used in small water conservancy, power, road, railway, seaport, mining construction, and military engineering projects. In these projects, geosynthetic materials offer functions such as filtration, drainage, reinforcement, isolation, and seepage prevention, with plastic geotextiles being one type of synthetic geosynthetic material.
Travel Transportation
Temporary tents and sunshades in the tourism industry, as well as various travel bags and suitcases, all utilize plastic woven materials. Various canvas materials are widely used as covering for transportation and storage, replacing the easily moldy and cumbersome cotton canvas. Fencing and netting during construction also commonly employ plastic woven materials. Examples include logistics bags, logistics packaging bags, cargo bags, and cargo packaging bags.
Everyday Consumer Goods
Most laborers, farmers, cargo handlers, and market-goers use plastic woven products. They are everywhere—inside stores, warehouses, and homes. Plastic woven materials have replaced the padding for synthetic carpet, such as shopping bags, supermarket bags, eco-friendly supermarket bags; as well as cargo woven bags for logistics transportation, logistics woven bags.
6Flood control supplies
Flood control and disaster relief cannot do without burlap bags, nor can the construction of embankments, riverbanks, railways, and highways. This includes flood prevention burlap bags, drought-proof burlap bags, and flood control burlap bags.
National Standards
TAGS:National Standard for Plastic Woven BagsGB/T8946-2013
Date:2008-08-22
This standard specifies plastic packaging, Transportation, Storage requirements. This standard applies to polypropylene-based Polyethylene resin is the main raw material. Extruded Drawn into flat filaments Further weaving, Plastic woven bags made for packaging powdered or granular solids and flexible items (hereinafter referred to as "bags") 。
Cited Standard
The provisions contained in the following standards: Provisions forming part of this standard by reference in this standard. At the time of this standard's publication, All displayed versions are valid. All standards will be revised. The parties using this standard should discuss the use of the following standards.***Possibilities for the new version.
GB/T 1039-92 Plastic Mechanical Property Testing Methods - General Principles
GB/T 1040-92 Plastic Tensile Property Test Method
GB/T 2828-87 Batch inspection counting sampling procedure and sampling schedule (for continuous batches)
GB 2918-82 Standard Environment for Adjusting and Testing Plastic Sample Conditions
GB/T 4857. 5-92 Packaging - Transportation Packaging Unit - Drop Test Method
GB/T 5009. 60-1996 Analytical Methods for Sanitation Standards of Molding Products Made of Polyethylene, Polystyrene, and Polypropylene for Food Packaging
GB 9687-88 Sanitary Standards for Polyethylene Molding Used in Food Packaging
GB 9688-88 Sanitary Standard for Food Packaging Polypropylene Molding Products
Product Categories
Variety
Priced by primary material composition, including polypropylene bags, Polyethylene bags.
Pockets are divided according to sewing methods into seam-bottom pockets. Seamed bottom bag
Test Method
Tensile Load
Test Conditions
Please provide the Chinese content to be translated.GB/T 1039 Regulations are in effect. Samples are tested at temperature.23℃±2° C, Moisture Content Adjustment4hUnder these conditions, tests were conducted.
Test equipment should comply withGB/T1040-1992 Chapter6Section on Equipment Regulations: Jig spacing is200mmThe empty vehicle descends at a speed of200mm/min±20mm/min。
Sampling Method
Sampling from the folded edge of the sewing roll, take the warp and weft directions from each bag. Seaming direction Two pieces of sample each for bottom stitching. Long300mmApprox. width:60mm, further corrected to50mm, such as***Leave the next thread if it's more than half a thread longer. The seam threads on both sides of the sample should be left longer, and each side should have three knots tied.
Record the tensile load of the sample and take its arithmetic mean.
If a sample breaks or slips in the fixture during testing, affecting accuracy, a new sample should be used for a retest.
Thermal resistance
Remove two samples each from the warp and weft directions from the bag, length300mm, wide20mm。
Overlap the surfaces and apply on top9.8 NThe load, place into80Oven at °C1hRemove the two overlapping specimens immediately and inspect for any abnormal conditions such as adhesion or melting marks on the surface.
Droppability resistance
Test environment is at room temperature and humidity.
The test site is a level concrete surface.
Fill factor0.80～0.85。
Test quality and material selection
TABagged style20kgPolypropylene, polyethylene resins, or materials of equivalent density.
ABagged25kgPolypropylene, polyethylene resins, or materials of equivalent density.
BBagged style40kgUrea or material with equivalent density.
CBagged50kgUrea or material with equivalent density.
Test Sequence
******Vertical—Horizontal—Lateral
Article 2: Parallel—Lateral—Vertical
Section 3: Lateral—Vertical—Horizontal
Place the sample on1.2mThe free fall height, as specified.5.7.5Perform three drop tests in the specified order, inspect for any bag破裂 (rupture) and packaging leakage.
Sanitary Performance
Please provide the Chinese content to be translated.GB/T5009.60Regulations are in effect.
Inspection Rules
Batching
Products of the same model and specification are considered as a batch, with no batch exceeding1510,000 pieces.
Sample
Bag appearance and deviation qualification determinationGB/T2828A specified normal sampling plan is conducted.(See Table5)Each woven sack is a sample unit.
|
Bulk Range |
Sample Size |
Qualified Assessment CountAc |
Non-conforming item countRc |
|
501—1200 |
32 |
3 |
6 |
|
1201—3200 |
50 |
7 |
8 |
|
3201—10000 |
80 |
10 |
11 |
|
10001—35000 |
125 |
14 |
15 |
|
35001—150000 |
120 |
21 |
22 |
Tensile load - random sampling per batch5Line,Amongst2Line as spare,3Line items5.5.3Sample testing.
Other inspection items as specified in Clause5Section stipulates random sampling; the number of samples should meet the testing requirements for the necessary items.
Inspection Category
The factory inspection items include tensile load.
Type Testing
The type inspection items include all items in the technical requirements. Generally, an annual inspection is conducted. Type inspection should be carried out under any of the following conditions:
a) Trial定型evaluation for new or existing products undergoing factory transfer production.
b) After formal production, if there are significant changes to the structure, materials, or process, which may affect product performance;
c) Upon resuming production after a long-term halt.
d) When the factory inspection results show significant differences from the last type inspection;
e) The national quality supervision authority has proposed requirements for type testing.
6.4Evaluation Rules
Quality Assessment of Sample Units
The appearance and deviations of the bags are inspected as required. If all items pass the inspection, the sample unit is deemed qualified.
Quality Determination of Qualified Batch
Bag appearance and deviation qualification judgmentGB/T2828Regulations are in place to indicate batch quality by the number of non-conforming products per hundred units, with a general inspection level ofIQualified Quality LevelAQL）For6.5See the specific regulations in the table.5。
If there are any不合格 items in the tensile strength test, the sample should be doubled from the original batch and retested on the non-compliant items. If the retest results are all qualified,,Then, the batch is deemed qualified.
Thermal Resistance Test
If the heat resistance test fails, the type approval is considered不合格.
Drop Test
If the drop test fails, the type approval is not compliant.
Sanitary Performance
If any sanitation performance indicators are不合格, the type examination is considered不合格.
Branding, Packaging, Transportation, Storage
Brand
The product packaging should include the manufacturer's name, product name, specifications, quantity, standard number, trademark, and manufacturing date, among other information. Special requirements shall be decided through mutual consultation between both parties.
Packaging
Bag packaging should be sturdy, flat, and suitable for transportation.
The number of items per package is to be negotiated between both parties.
Each package should contain a product quality certificate.
Transportation
Bags should be handled with care during transportation, avoiding direct sunlight and rain, to ensure the packaging remains intact.
Storage
Bags should be stored in a cool, clean indoor area, with a storage period of no more than eighteen months from the date of manufacture.
Woven bags, woven bag pockets, snake skin bags, Sichuan woven bags, fertilizer packaging bags, color-printed woven bags
