Contents
The manufacturing process for transparent travel toiletry bags must balance functionality, durability, and user experience:Seams are coated with food-grade waterproof adhesive. A TPU film is fused to the edges using a high-frequency hot press (temperature accuracy within ±2°C) to achieve a seamless seal.
The manufacturing process for transparent travel toiletry bags must balance functionality, durability, and user experience:
I. Material Safety and Selection Specifications
Environmentally Friendly PVC Base Material
Use rigid PVC materials that comply with the GB/T 8813-2008 standard. Transparency must meet the optical performance requirements of GB/T 24157-2009. Plasticizers must be non-toxic (such as medical-grade DINCH). Phthalates are prohibited. Children's products must also pass EN 71-3 heavy metal certification.
Material Compatibility
Zippers should use resin tooth chains treated with an anti-rust coating to prevent metal oxidation contamination. The sponge/PEF lining must pass the QB/T 2463 odor test and have a thickness of 3-10mm. Hardware must be reverse-ribbed to reinforce load-bearing areas, and the handles must be tested for a load-bearing capacity of ≥5kg.
II. High-Frequency Hot Pressing Core Technology
Waterproof Sealing Structure
Seams are coated with food-grade waterproof adhesive. A TPU film is fused to the edges using a high-frequency hot press (temperature accuracy within ±2°C) to achieve a seamless seal. The zipper slot is sandwiched between the outer fabrics, and double-stitched seams are used to prevent unraveling.
Deformation Control
Curved bags (such as cylindrical bags) require a dedicated crimping machine to maintain a smooth curve. After sewing, a rigid ABS support plate is built into the bag to stabilize the shape. High-frequency hot pressing requires real-time temperature monitoring to prevent perforation of the TPU film (a common risk).
III. Functional and Structural Design
Visual Partitioning System
An internal mesh or transparent partition separates wet and dry areas. The edges of the partitions are independently heat-sealed to prevent leakage. Open areas are covered with matching PVC edging, and high-frequency heat-cutting eliminates fraying.
Optimized Portability
A built-in cord passage (width = 1.5 times the cord diameter) is located on the top. The detachable handle is made of top-grain leather or PU and features an air-enclosed buckle with a ring buckle for easy removal.
IV. Quality Inspection and Compliance Control
Full Inspection Items
Waterproof Performance: Lining shows no penetration when exposed to water at a 45° angle for 1 minute.
Durability Test: Zipper opens and closes 50 times without sticking, and seams withstand a 10N pull without unraveling.
Labeling Specifications
Outer packaging must be marked with the material certification code (e.g., FDA food contact grade). PE dust bags must be printed with a waterproof label and recycling mark.
Process Warning: Inferior plasticizers can cause brittle cracking and migration contamination of the package. Uncontrolled high-frequency hot pressing temperatures can cause perforation of the TPU film.
Contact us
Telephone (86)+ 13575492534 |
sales@toppackaging.cn |
Address Lianrong Building, Linping District, Hangzhou, Zhejiang, China |
website www.toppackaging.cn |
A make-up bag with reasonable design and good material can not only enhance the user's make-up efficiency, but also bring a better make-up experience. It can make users feel more comfortable and convenient in the process of make-up, it can hold a variety of cosmetics, such as mascara, lip gloss, powder, eyebrow pencil, sunscreen, blotting paper, etc., which is convenient for users to carry around and access at any time!
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Email: sales@toppackaging.cn Tel: (86)+13575492534
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