Shoe inspection standards and procedures Inspection and factory verification services
Shoes, as essential items for daily wear and protection of the feet, their quality and safety directly affect the comfort and health of the wearer. Therefore, the inspection and verification work of footwear products is of great significance and is a crucial step in ensuring that the products meet the quality certification requirements. This article will focus on the relevant standards for shoe inspection and factory verification, and systematically introduce the inspection process and key points of inspection.
I. Overview of Shoe Inspection and Testing Standards
The inspection of footwear is mainly divided into three categories based on product types: men's shoes, women's shoes, and children's shoes. During the inspection process, each category must strictly follow the corresponding standards to ensure that the products pass the final quality certification.
(1) Key points for inspection of men's shoes
A. Key points for inspection of the shoe upper:
The leather material must not be wrinkled. Key areas such as the shoe cap, shoe cover and outer waist should not have any flaws such as moth spots, scratches or blemishes.
The toe of the shoe must not stick out; the back closure should be properly aligned; the two sides of the waist should be of the same height.
The surface of the cover should not have any stitching problems such as loose threads, broken threads, missing bottom lines or skipped stitches.
The toe inclination of the shoes should be uniform and must match the confirmed sample.
The inner part of the shoe toe must be free from wrinkles and it is necessary to check if it has penetrated into the midsole.
The color difference of the shoes, the glossiness and the color-removal effect should be consistent with the confirmed sample.
The shoe box should be smooth without any wrinkles, and the zipper should be straight and the closure should be secure.
The durability of the shoe eyelets should be sufficient, and there should be no obvious cracks or holes at the connection points.
The portobello must be installed properly, with the hardness meeting the requirements. It must not be left unplaced or not pulled into the midsole plate.
The trademark letters must be correct and complete, without any omissions.
The interior should be free from any nails, peeling or wrinkles. The color of the leather material should be evenly distributed, and the cut edges should not have a different color.
The stitching lines at the toe and heel area of the shoes should be evenly distributed; there should be no skipped stitches.
The eyelets of the shoes should be aligned properly without any frayed edges. The holes must be smooth.
The leather materials for work shoes need to be used in pairs, and the pairings should be accurate.
The Hongbao buckle must not be loose; it needs to be pulled down into the midsole.
B. Inspection points for the sole part:
The adhesion force of the face and base bonding glue must meet the standards. There should be no insufficient glue at the two edges, and the glue line should be within the controlled range.
The sole needs to be smooth and flat; there should be no traces of steel core exposure or unevenness.
The sole must not have any slippage at the front or back. The toe of the shoe needs to be straight. The size of the upper and the sole must be accurate.
The sole must not fade in color, and its thickness and softness must meet the standards.
The bottom adhesive strips must be properly attached, and the edge sealing must be smooth without any glue peeling or insufficient glue application.
The post-processing of the sole needs to meet the standard requirements.
The sole of the midsole must not have any rolled edges, and the insole should be firmly adhered.
The steel core of the midsole should be made of hard steel, capable of withstanding bending. Its position should be accurate and it should be segmented.
C. Key points of strength verification:
The tests for tensile strength and material wear resistance must be passed.
The cold resistance and flexibility test of the finished product must be passed.
The pulling forces of accessories such as the tongue of the shoe, the webbing, and the rear strap must meet the standards.
(2) Key points for inspection of women's shoes
A. Key points for inspection of the shoe upper:
The laces should not be twisted, the shoe upper should not have scratches or damages, and the leather material should not have insect spots, hemp spots, or other defects.
The upper surface should be smooth without any wrinkles, and the toe part should not be pointed.
The toe inclination of the shoes should be uniform and consistent with the confirmed sample.
The color difference of the shoes, the glossiness and the color-removal effect should be consistent with the confirmed sample.
The surface of the cover must not have loose threads, broken threads or skipped stitches.
The length of the shoe face, the height of the inner and outer waist, and the height of the heel must be consistent with each other.
The inner lining of the shoe toe must not be wrinkled. Check if it has penetrated into the midsole.
The trademark letters must be correct and complete, without any omissions.
The port plug must be installed properly and its hardness should meet the requirements.
B. Inspection points for the sole part:
The steel core of the midsole should be made of hard steel, and the bending resistance test must be passed. The material of the midsole plate combination should meet the requirements.
The surface material should be made of PU (polyurethane) and must be colorless. The wear resistance should meet the standard.
The nails on the seat must not protrude or sink, and the heel of the shoe must not come out of the nail.
The outsole and the waterproof platform must fit together.
The heel needs to pass the impact test and meet the company's requirements.
There should be no gap or separation between it and the sole.
The installation must be firm. Use four threaded nails and four tooth nails. The test pull force must meet the standards.
There should be no foreign objects inside the shoes, and the nails need to be removed completely.
The sole must not fade in color, and its thickness and softness must meet the standards.
The size should fit well during the fitting process. The high heels must not be unstable when walking.
C. Inspection Points for Decorative Items:
The ornaments must not be prone to cracking, peeling, scratching, chipping, nor must they be made of iron or likely to fall off.
The stitch spacing for electro-embossing should be aesthetically pleasing and must not come loose or have significant color differences.
The beads and clasps should be firmly attached and should not fall off during a pulling test.
(3) Key Points of Shoe Inspection and Testing
A. Key points for inspection of the shoe upper:
The laces should not be twisted, the shoe upper should not have scratches or damages, and the leather material should not have insect spots or mottles.
The upper surface should be smooth without any wrinkles, and the toe part should not be pointed.
The trademark letters must be correct and complete, without any omissions.
The inner lining of the shoe toe must not be wrinkled. Check if it has penetrated into the midsole.
The port plug must be installed properly and its hardness should meet the requirements.
The surface of the cover must not have loose threads, broken threads or skipped stitches.
The toe inclination of the shoes should be uniform and consistent with the confirmed sample.
The color difference of the shoes, the glossiness and the color-removal effect should be consistent with the confirmed sample.
The shoe box should be smooth, the zipper should be smooth, and the closure should be secure.
The boot shaft should be smooth and the stitching inside should be accurate.
The boot shaft must not lean forward or backward.
The shape of the sole arch should be precise and must not be sunken.
The zippers should be smooth, the anti-slip property must be sufficient, and the trademark should be correct.
The adhesive force of the magic tape with the fluffy coating must meet the standards.
B. Inspection points for the sole part:
The steel core of the midsole should be made of hard steel, and the material of the midsole plate should meet the standards.
The size should fit well during the fitting process. The high heels must not wobble or be unstable.
The sole must not fade in color, and its thickness and softness must meet the standards.
There should be no foreign objects inside the shoes, and the nails need to be removed completely.
C. Inspection Points for Decorative Items:
The ornaments must not be prone to cracking, peeling, scratching, chipping, nor must they be made of iron or likely to fall off.
The stitch spacing for electro-embossing should be aesthetically pleasing and must not come loose or have significant color differences.
The beads and clasps should be firmly attached and should not fall off during a pulling test.
II. Shoe Inspection and Factory Verification Process
(1) Preparations before inspection and business collaboration
Verification of data confirmation:
After receiving the order contract, QC needs to verify whether all the order information is complete, including the contract and packaging information, signature confirmation samples, production operation sheets, etc.
It is necessary to verify the requirements for the correct side labels, water washing labels, trademarks, etc.
Confirm the technical parameters such as the shoe size, the length of the sole and heel, and the length of the laces.
Clarify the requirements for both inner and outer packaging, such as the thickness of the carton, the printed content, the sealing method, the shoe box, the tag, the barcode, etc.
Confirm the written notice that the customer has specifically emphasized.
Factory inspection assessment:
Evaluate the new factory, including its development capabilities, management level, production capacity, product quality, cooperation willingness, factory appearance and price level, to ensure that it meets the corresponding factory inspection certification requirements.
(2) Inspection Execution Process
Schedule arrangement:
The QC department needs to request the factory to provide a production schedule based on the contract delivery date, and use it as the basis for inspection tracking.
If any abnormal progress is detected, it is necessary to promptly request the factory to make adjustments and report to the relevant sales representatives to ensure timely delivery.
Sample fitting confirmation:
The QC supervisor is responsible for conducting fitting checks on private model products before mass production, to ensure that the length, thickness, placement, toe-up angle, etc. meet the requirements.
Confirm the comfort level, such as whether the big toe is under pressure, whether the upper part of the shoe is pressing on the back of the foot, and whether the heel falls off.
If any problems are identified, the factory must be immediately instructed to stop operations and a discussion should be held with the technical supervisor. Production can only resume after the problem has been resolved.
Full set of trial production inspection:
Through paper mock-ups and knife-cutting tests, we will examine whether there are any technical issues with the full-number upper and assess their impact on the production quality.
The private model products are confirmed by the QC supervisor and the technical supervisor; the public model products are confirmed by the QC supervisor and the factory technician.
The QC personnel must be involved throughout the process, grasp the key points of quality control, and ensure that the products meet the standards of inspection and verification.
Summary
The inspection and verification of shoes is a crucial step in ensuring product quality and safety, covering aspects such as the shoe surface, sole, accessories, and stability. By strictly adhering to the inspection and factory verification standards and improving the inspection process, the product qualification rate can be effectively enhanced, ensuring that the products pass quality certification and meet the high standards of the market and consumers.
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Shoe inspection standards and procedures Inspection and factory verifi
Shoes, as essential items for daily wear and protection of the feet, their quality and safety are directly related to the comfort and health of the wearer.
