Standard Woven Bag Specifications:30cm-----75cmWide, with unlimited length, suitable for both standard and full-color printing.

Application Scope

Vegetables and other agricultural products 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 share of bulk cement packaging85%Above, with the development and application of flexible container bags, plastic woven containers 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, sunshade, windbreak, and hailproof sheds for crop planting, etc. 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 gradually transitioning to woven bags. Common types of woven bags include rice woven bags, flour woven bags, corn woven bags, etc.

Geotechnical Engineering

From80Since the development of geotextiles, the application fields of plastic woven fabrics have been broadened, widely used in small-scale water conservancy, power, roads, railways, seaports, mining construction, and military engineering projects. In these projects, geosynthetic materials provide functions such as filtration, drainage, reinforcement, isolation, and impermeability. 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, utilize plastic woven materials. Various canvases are widely used as covering materials for transportation and storage, replacing the easily moldy and cumbersome cotton canvas. Construction fences and screens are also extensively applied with plastic woven materials. Common items include logistics bags, logistics packaging bags, cargo bags, and cargo packaging bags.

Everyday commodities

Most workers, farmers, cargo handlers, and market-goers use plastic woven products. These are found everywhere—stores, warehouses, homes, and more. The padding material for synthetic carpet is also replaced by plastic woven materials, 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 relief efforts and 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 SacksGB/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. After extrusion, Drawn into flat filaments Further weaving, Plastic woven bags, made for packaging powdered or granular solids and flexible items (hereinafter referred to as "bags"). 。

Reference Standard

The provisions contained in the following standards: Provisions constituting 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 Testing Method

GB/T 2828-87 Batch inspection counting sampling procedures and sampling sheets (for inspection of continuous batches)

GB 2918-82 Standard Environmental Conditions for Plastic Specimen Conditioning and Testing

GB/T 4857. 5-92 Packaging | Transport Packaging Units | Drop Test Method

GB/T 5009. 60-1996 Analytical Methods for Hygiene 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 Standards for Food Packaging Polypropylene Molding Products

Product Categories

Variety

Purse made of polypropylene, divided by primary composition materials. Polyethylene bags.

By sewing method, divided into seam bottom bags, Seamed Bottom Pouch

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 temperatures23℃±2°C, Humidity Adjustment for Constant Moisture State4hAnd tests were conducted under these conditions.

Test equipment should comply withGB/T1040-1992 Chapter6Section regarding equipment specifications: Spacing of fixtures200mmThe empty vehicle descends at a speed of200mm/min±20mm/min。

Sampling Method

Sample the face of the folded sewing roll, taking the warp and weft directions from each bag. Edge direction Two pieces each of bottom stitching samples. Long300mmApprox. width:60mm, further corrected to50mm, such as***Leave the subsequent threads longer than half. The seam lines on both sides of the sample should be appropriately extended, with each side tied into three knots.

Record the tensile load of the samples and take the arithmetic mean.

If a sample breaks or slips in the fixture during testing, affecting accuracy, a new sample should be used to retest.

Thermal resistance

Remove two specimens each from the warp and weft directions from the bag, length300mmComma, wide20mm。

Overlap the surfaces and apply on top9.8 NThe load, place in80°C oven1hRemove the two overlapping specimens immediately after extraction and inspect for any abnormal conditions such as sticking or melting marks on the surface.

Drop resistance

Test environment is at room temperature and humidity.

The testing site features a level concrete surface.

Fill factor0.80～0.85。

Testing quality and material selection

TAType Bag packaging20kgPolypropylene, polyethylene resins, or materials of equivalent density.

ABagged25kgPolypropylene, polyethylene resins, or materials with equivalent density.

BBagged40kgUrea or material with equivalent density.

CType bags50kgUrea or material of equivalent density.

Test Sequence

******Vertical—Horizontal—Lateral

Article 2: Parallel direction—Lateral—Longitudinal

Article 3: Lateral—Vertical—Horizontal

Place the sample on1.2mFree fall from a height, by5.7.5Perform three drop tests in the specified order, inspect for any bag破裂 (rupture) and packaging leakage.

Sanitary Performance

Please provide the Chinese content that needs to be translated into American English.GB/T5009.60Regulations are in effect.

Inspection Regulations

Batching

Products of the same model and specification are considered a batch, with no batch exceeding1510,000.

Random Sampling

Bag appearance and deviation qualification determinationGB/T2828A standard sampling plan as specified.(See Table5)Each woven sack is a sample unit.

Tensile load, random sampling per batch5Stripe,Amongst2Line for spare,3Line Item5.5.3Sample testing.

Other inspection items as per Item No.5The chapter stipulates random sampling, and the number of samples should be sufficient to meet the testing requirements for the required items.

Inspection Category

The factory inspection item is 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 and定型 assessment for new or existing products being transferred to a new factory for production.

b) After formal production, if there are significant changes to the structure, materials, or process 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 the requirement for type testing.

6.4Evaluation Rules

Sample Unit Quality Assessment

The appearance and deviation of the bags are inspected according to requirements. If all items pass the inspection, the sample unit is deemed qualified.

Quality Determination of Approved Batches

Bag appearance and deviation qualification determinationGB/T2828Regulations are in place, expressing batch quality in terms of the number of non-conforming products per hundred units, with a general inspection level ofICompliant quality levelAQL) For6.5See 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 at double the amount to retest the不合格 items. If the retest results are all合格.,The batch is deemed合格.

Heat 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不合格.

Sanitary Performance

If any sanitation performance indicators are不合格, the type examination is deemed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 shall be agreed upon 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

The bags should be handled with care during transportation, avoiding exposure to sunlight 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