Standard Woven Bag Specifications:30cm-----75cmWide, available in any length, suitable for both standard and full-color printing.
Application Scope
Vegetable 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 container bags are widely used in 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, shade materials for crop planting, windbreak, hailproof sheds, and more. Common products include feed woven bags, chemical 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 adopting woven bags. Common woven bags 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 materials have been broadened, widely used in small water conservancy, power, highway, railway, seaport, mining construction, and military engineering projects. In these projects, geosynthetic materials serve functions such as filtration, drainage, reinforcement, isolation, and anti-seepage. Plastic geotextiles are a 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 tarpaulins are widely used as covering materials for transportation and storage, replacing the easily moldy and cumbersome cotton woven tarps. Construction fences and netting are also extensively applied with plastic woven materials. Common types include logistics bags, logistics packaging bags, cargo bags, and cargo packaging bags.
Everyday consumer goods
Most workers, farmers, cargo handlers, and market-goers use plastic woven products. These can be found everywhere—stores, warehouses, homes. Plastic woven materials have also replaced padding for synthetic carpet, such as shopping bags, supermarket bags, eco-friendly supermarket bags; cargo woven bags for logistics transportation, logistics woven bags.
6Flood control supplies
Burlap bags are indispensable for flood control and disaster relief, as well as for the construction of embankments, riverbanks, railways, and highways. This includes flood prevention bags, drought prevention bags, and flood control 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, Polyethylene resin is the main raw material. Extruded Drawn into flat filaments Further weaving, Plastic woven bags made for packaging powdery or granular solid materials and flexible items (hereinafter referred to as "bags") 。
Reference Standard
The provisions contained in the following standards: Provisions that are incorporated into 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. Parties using this standard should discuss the use of the following standards.***Potential for the new version.
GB/T 1039-92 Plastic Mechanical Property Test Methods - General Principles
GB/T 1040-92 Plastic Tensile Property Testing Method
GB/T 2828-87 Batch inspection counting sampling procedures and sampling sheets (for inspection of continuous batches)
GB 2918-82 Standard Environment for Plastic Sample Condition Adjustment and Testing
GB/T 4857. 5-92 Packaging, Transport Packaging Units, Drop Test Method
GB/T 5009. 60-1996 Analysis Method for Sanitary Standards of Molding Products Made of Polyethylene, Polystyrene, and Polypropylene for Food Packaging
GB 9687-88 Sanitary Standard for Polyethylene Molding Used in Food Packaging
GB 9688-88 Sanitary Standard for Food Packaging PP Molding Products
Product Categories
Variety
By primary material composition, divided into polypropylene bags, Polyethylene bags.
According to the sewing method, it is divided into bottom-sewn bags, Seamless Bottom Pouch
Test Method
Tensile Load
Test Conditions
As perGB/T 1039 Regulations are in place. Samples are tested at temperature.23℃±2° C, Moisture Content Adjustment4hAnd tests were conducted under these conditions.
Testing equipment should comply withGB/T1040-1992 Chapter6Chapter on Equipment Regulations: Jig spacing is200mmThe empty vehicle descends at a speed of200mm/min±20mm/min。
Sampling Method
By taking the stitched rolled edge as the sampling surface, samples are taken from the warp and weft directions on each bag. Seam direction Two pieces each of seam bottom samples. Long300mmApprox. width60mm, and further corrected to50mmPlease provide the Chinese content that needs to be translated into American English.***Leave the next one if it's more than half. The stitching on both sides of the sample should be left longer, with three knots tied on each side.
Record the tensile load of the sample and take the arithmetic mean.
If the sample breaks or slips in the fixture during testing, affecting accuracy, a new sample should be used to repeat the test.
Thermal resistance
Remove two specimens from the bag, each measuring two pieces lengthwise and two pieces crosswise.300mmComma, width20mm。
Overlap the surfaces and apply on top9.8 NThe load, place into80Oven at ℃1hSeparate the two overlapping specimens immediately after removal, and inspect the surfaces for any abnormalities such as adhesion or melting stains.
Drop resistance
Test environment is at room temperature and humidity.
The test site is a level concrete surface.
Fill Factor0.80～0.85。
Tested quality and material selection
TAType Bag Packaging20kgPolypropylene, polyethylene resins, or materials with equivalent density.
ABagged25kgPolypropylene, polyethylene resins, or materials of equivalent density.
BBagged type40kgUrea or material of equivalent density.
CBagged style50kgUrea or material with equivalent density.
Test Sequence
******Vertical - Horizontal - Lateral
Second Article: Parallel Direction—Lateral—Longitudinal
Section 3: Lateral—Vertical—Horizontal
Place the sample on1.2mFree fall height, by5.7.5Conduct three drop tests in the specified sequence to check for any bag rupture or loss of packaging material.
Sanitary Performance
Please provide the Chinese content to be translated.GB/T5009.60Regulations are in effect.
Inspection Regulations
Palletized
Products of the same model and specification are considered a batch, with no batch exceeding1510,000.
Sample
Bag appearance and deviation qualification determinationGB/T2828A standard sampling plan as specified(See Table5)Each woven sack is a sample unit.
|
Bulk Quantity Range |
Sample Size |
Qualified Assessment NumberAc |
Number of non-conforming determinationsRc |
|
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 from each batch5Line,Amongst2Item for spare,3Strips5.5.3Sample testing.
Other inspection items as per Item No.5The article stipulates random sampling, with the sample size to meet the testing requirements for the necessary items.
Inspection Category
The factory inspection items include tensile load.
Type Inspection
The type inspection items include all items in the technical requirements. Generally, an annual inspection is conducted. Type inspection should be carried out in any of the following situations:
a) Trial-type certification for new or existing products undergoing factory transfer production.
b) After formal production, if there are significant changes in structure, materials, or processes that may affect product performance;
c) Upon resuming production after a long-term halt.
d) When the factory inspection results show a significant difference from the last type inspection;
e) The national quality supervision authority has proposed requirements for type testing.
6.4Determination Rules
Sample Unit Quality Assessment
The bag's appearance and deviation are inspected according to specifications. If all items pass the inspection, the sample unit is deemed qualified.
Quality Determination of Qualified Batch
Bag appearance and deviation qualification determinationGB/T2828Regulate by the number of non-conforming products per hundred units, indicating the batch quality, with a general inspection level ofICompliant quality levelAQL）For6.5See the specific regulations in the table.5。
If there are any不合格 items in the tensile load test, the original batch should be resampled in double and the不合格 items should be retested. If the retest results are all合格.,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 is not passed, the type test is considered to be non-compliant.
Sanitary Performance
If any hygiene performance indicators are not up to standard, the type test is considered不合格.
Branding, Packaging, Transportation, Storage
Logo
The product packaging should include the manufacturer's name, product name, specifications, quantity, standard number, trademark, and manufacturing date. Special requirements should be negotiated by both parties.
Packaging
Bag packaging should be sturdy, flat, and suitable for transportation.
The number of items per package is subject to negotiation between both parties.
Each package should contain a product qualification certificate.
Transportation
Bags should be handled with care during transportation, avoiding exposure to sun and rain, and ensuring the packaging remains intact.
Storage
Bags should be stored in a cool, clean indoor area, with a shelf life of no more than 18 months from the date of manufacture.
Woven bags, woven bag pockets, snake-skin bags, Sichuan woven bags, fertilizer packaging bags, color-printed woven bags
