Home textile product inspection | Requirements and methods for towel inspection

March 13, 2026

Title: Comprehensive Guide to Inspection of Towel Products: From Basic Testing to Standard Certification - A Practical Handbook
I. Basic Understanding of Towel Products
Towels are fabric products used for wiping and cleaning, widely employed in personal care, household life, and the hospitality industry. They are typically made of cotton, bamboo fiber, or ultra-fine fibers, possessing excellent water absorption and softness. They can be used to wipe the face, body, and surfaces of furniture. High-quality towels have a soft touch, absorb water quickly, are durable and do not shed fibers, effectively helping the skin stay dry and clean.
According to different uses, towels can be classified into various types such as face towels, bath towels, sports towels, and children's towels. Among them, bath towels are larger in size and suitable for full-body coverage, while sports towels emphasize lightness and breathability. With the development of technology, functional products like antibacterial towels, quick-drying towels, and beauty towels have also gradually gained popularity among consumers. When using towels, they should be cleaned and dried regularly to maintain hygiene. Whether at home, in the gym, or during travel, towels are indispensable cleaning supplies in daily life, bringing comfort and convenience.
For manufacturers, importers and purchasers, it is of utmost importance to ensure that towel products meet quality standards. Professional third-party inspection and testing services can help enterprises identify potential issues before the products are manufactured, thereby avoiding returns, complaints and even damage to the brand reputation caused by quality defects.
II. Core Requirements for Towel Inspection
The quality inspection of towel products covers three dimensions: safety requirements, internal quality, and appearance quality. According to the national standard GB/T 22864-2020 "Towels" and relevant regulations, towel inspection must follow the following core requirements.
2.1 Safety Technical Requirements
The basic safety technical requirements for towel products should comply with the provisions of GB 18401 "National Technical Specifications for Basic Safety of Textile Products", covering key indicators such as formaldehyde content, pH value, decomposable carcinogenic aromatic amine dyes, and color fastness.
For towel products used by infants and children, they should also meet the higher requirements of GB 31701 "Technical Specifications for Safety of Textile Products for Infants and Children", including special tests such as saliva resistance color fastness and attachment tensile strength.
2.2 Internal Quality Indicators
The internal quality of towels is the core content of inspection, and it includes the following key indicators. These should comply with the provisions in Table 1:
Test items Standard requirements Testing methods
Weight deviation rate Complies with the product's explicit specifications GB/T 6529, FZ/T 60046
Breaking strength Weft direction ≥ 220N, Warp direction ≥ 180N GB/T 3923.1
Absorbency Excellent grade ≤ 10s, First grade ≤ 20s, Qualified grade ≤ 30s GB/T 22799 A method
Hair removal rate Garment towel ≤ 0.4%, Non-garment towel ≤ 0.5% GB/T 22798 A method
Fiber content deviation Complies with GB/T 29862 regulations GB/T 2910 series, FZ/T 01057 series
Soaping color fastness Change ≥ 3-4 grades, Bleeding ≥ 3 grades GB/T 3921-2008 Method C(3)
Friction color fastness Dry rubbing ≥ 4 grades, Wet rubbing ≥ 3 grades GB/T 3920
Chlorine bleaching color fastness Change ≥ 3-4 grades GB/T 7069
Water extraction substances in towels Excellent grade should comply with GB/T 27754 regulations GB/T 27754
Note: The new standard GB/T 22864-2020 adds technical requirements for water extraction substances in excellent grades, including PCP content, extraction liquid bleeding and transparency, which are higher requirements for product safety.
2.3 Appearance Quality Indicators
The appearance quality of towels directly affects consumers' purchasing decisions. During the inspection process, the following items should be carefully checked and must comply with the provisions in Table 2:
Inspection items Requirements for qualified products Inspection methods
Specification and size deviation rate Within ±3.0% Measure with a steel ruler, calculate the deviation rate
Blemishes Linear blemishes ≤ 3cm/spot, strip blemishes ≤ 1.5cm/spot, no obvious block blemishes Visual inspection at 600lx illumination
Sewing quality Uniform needle stitches, no skipping stitches, no floating threads, no exposed thread edges on all four sides of the seam Visual inspection
Ironing quality Flat, no creases, no stains Visual inspection
Color difference Not lower than GB/T 250 3-4 grade Comparison with standard light source box
Color spots Not obvious Visual inspection
III. Test methods for towel inspection
Professional third-party inspection agencies will strictly follow national standards for inspection to ensure the accuracy and traceability of the test results.
3.1 Internal Quality Inspection
Determination of weight deviation rate: After reaching a moisture equilibrium under the standard atmospheric conditions specified in GB/T 6529, weigh the items and take the constant weight. For handkerchiefs and face towels, weigh 10 pieces and calculate the deviation rate between the actual weight and the indicated weight.
Determination of breaking strength: Performed in accordance with GB/T 3923.1, the breaking strength in the warp and weft directions is measured using a fabric strength testing machine to evaluate the durability of the product.
Determination of water absorption: Follow the provisions of Method A in GB/T 22799-2019. Use a capillary effect tester to measure the time required for water droplets to be completely absorbed. When sampling, avoid areas such as coatings, satin patterns, and embroidery to ensure that the test results reflect the true water absorption of the substrate.
Measurement of the hair removal rate: Follow the provisions of Method A in GB/T 22798-2019 to determine the hair removal amount of the towel through a simulated washing process, and evaluate the hair loss situation of the product during use.
Determination of fiber content: Follow the standards of GB/T 2910 series and FZ/T 01057 series. Use a microscopic projector or chemical dissolution method to analyze the fiber composition and proportion, ensuring consistency with the label markings.
Fastness test:
Soaping resistance color fastness: Performed in accordance with Method C(3) of GB/T 3921-2008
Fiber resistance to rubbing color fastness: Performed in accordance with GB/T 3920, divided into dry rubbing and wet rubbing.
Chlorine-resistant color fastness: Performed in accordance with GB/T 7069
Determination of water extract from towels: Follow the provisions of GB/T 27754. For samples with a length exceeding 1800mm or a width exceeding 1200mm, take one quarter of the entire sample, and after trimming the edges, use sewing thread to edge-wrap and then conduct the test.
3.2 Appearance Quality Inspection
Measurement of the deviation rate of specification dimensions:
Tool: Steel ruler (with an accuracy of 1mm)
Method: Place the sample flat on the inspection table, gently smooth it with your hands to ensure the sample is in a natural stretched state. Use a steel ruler to measure at one-quarter and three-quarters of the length and width of the entire sample, with an accuracy of 1mm. Calculate the deviation rate between the average value and the nominal size.
Inspection of defects, sewing quality and ironing quality: The inspection should be conducted under a surface illuminance of no less than 600 lx. The inspectors should stand about 60 cm away from the sample surface and conduct a visual inspection item by item.
Evaluation of color difference and color spots: It is conducted in accordance with GB/T 250 "Textiles - Test methods for color fastness - Evaluation of color change using gray scale cards".
IV. Classification and Determination of Common Defects in Towels
During the inspection process of towels, inspectors need to be familiar with the definitions and determination criteria of various defects to ensure the accuracy of defect classification.
Defect Categories Definition and Judgement Criteria
Linear Defects Defects with a width of one yarn or less and a length of ≥ 1 cm. Each 3 cm or less is counted as one defect. Defects over 3 cm are cumulatively calculated. The length of each defect shall not exceed 6 cm.
Strip Defects Defects with a width of two yarns or less and a length of ≥ 0.5 cm. Each 1.5 cm or less is counted as one defect. Defects over 1.5 cm are cumulatively calculated. The length of each defect shall not exceed 4.5 cm.
Block Defects Includes local defects such as hair loss and exposed fibers, and trapezoidal fibers
Scattered Defects Includes defects affecting the overall appearance such as flat fabric with reversed fibers, reversed raised fiber loops, incomplete cutting of pile, spiral not spiraling, uneven fiber loops, etc.
Printing and Dyeing Defects Includes raised patterns, dragging patterns, color fading, color bleeding, color mismatch, inaccurate plate alignment, plate falling off, reversed printing, incorrect fabric pattern position, color matching errors, etc.
Damaging Defects Total breakage of 3 or more yarns in both warp and weft, which is a serious defect
V. Inspection Services at Different Production Stages
Professional third-party inspection agencies can provide customized inspection services according to customer requirements at all stages of production:
5.1 Initial Inspection During Production
This is conducted when raw materials are received into storage or when production commences. The main focus is on checking:
Is the quality of the fabric up to the required standard?
Do the dyes and additives meet the environmental protection standards?
Are the production process parameters set correctly?
5.2 Mid-production Inspection
Conduct sampling inspections during the production process to promptly identify and rectify any issues:
Inspection of semi-finished product quality
Confirmation of dyeing and printing effects
Seamwork inspection
5.3 Final Production Inspection (Pre-shipment Inspection)
Conduct a comprehensive inspection before packaging to ensure that the finished products meet the quality standards:
Conduct sampling inspection in accordance with the AQL standard
Comprehensive inspection of both internal quality and appearance quality
Verification of packaging, labels and shipping marks
Issue a detailed inspection report
5.4 Full Inspection Service
For high-value products or important orders, 100% full inspection service is available to ensure that every product meets the requirements.
VI. Sampling and Judgment for Towel Inspection
6.1 Sampling Quantity
According to the product type and specifications, the sampling quantity for inspection should meet the following requirements:
Product Type Specification Model Sampling Quantity
Bath Towel / 4 pieces (2 of which are samples)
Face Towel / 6 pieces (2 of which are samples)
Square Towel 30cm x 30cm or larger 10 pieces (4 of which are samples)
Square Towel 30cm x 30cm or smaller 14 pieces (6 of which are samples)
Note: If the sample is too small, the sampling quantity can be appropriately increased, but it must not exceed the reasonable needs for inspection and re-inspection.
6.2 Judgment Principles
The determination of the inspection results shall follow the following principles:
All qualified: All inspection items meet the standard requirements, and are judged as qualified.
There is non-conformity: If any one or more items in the inspection are non-conforming, it is determined as non-conforming.
Explicit quality requirements exceed the standard: The quality requirements indicated on the product shall be used for judgment.
If the explicitly stated quality requirements are lower than the mandatory standards: Judge according to the mandatory standards.
VII. Key Contents of the Towel Inspection Report
A professional third-party inspection report should include the following key information to ensure the traceability and operability of the results:
Basic information: Report number, inspection date, inspector information, customer information, supplier information
Product Information: Product Name, Specification Model, Order Number, Batch Number, Sampling Quantity
Test items and results: Specific data, standard requirements, and determination results for each test item
Defect description and photos: Type, location and quantity of the discovered defects, along with clear photos
Overall assessment: Comprehensive quality evaluation, whether the goods pass the inspection
Improvement suggestion: Propose corrective measures for the identified issues
VIII. Conclusion: Professional inspection ensures the quality of towels
Towels, as frequently used household products, their quality directly affects the users' experience and health and safety. From raw material procurement to product completion, every stage requires strict quality control.
Professional third-party inspection, factory audit, testing and certification services can assist manufacturers, importers and purchasers:
Ensure that the product complies with mandatory safety standards such as GB 18401 and GB 31701.
Verify whether the internal quality indicators such as water absorption, hair removal rate, and color fastness meet the requirements.
Identify appearance defects to ensure product aesthetics
Through AQL sampling inspection, the overall product quality of the batch can be scientifically evaluated.
Obtain authoritative inspection reports as the basis for trade settlement and quality traceability.
If you are looking for a professional and reliable inspection service for towel products, please contact a third-party quality assessment agency to obtain a comprehensive quality control solution from the initial production stage to the shipping process. This will ensure that your towel products are delivered to consumers in the best possible condition.