1.Thickness measurement The precise thickness of each layer of a tube is fundamental to its performance. This test uses a micrometer or specialized thickness gauge to measure the actual thickness of each layer (from the inner barrier film to the outer printed layer), typically at five to ten points throughout the tube. The goal is to ensure compliance with design specifications. 2.Sealing performance test Heat Seal Strength (Tube End): Cosmetic Plastic Cream Tube ends are sealed using heat during the manufacturing process. This test measures the force required to tear the seal. It ensures that the seal will not crack during extrusion, transportation, and storage. Standards generally require a minimum strength to ensure reliability. Torque Test (Tube End to Cap): This test evaluates the tightness of the connection between the tube end and the cap. A torque meter measures the force required to unscrew or tighten the cap, ensuring it is neither too loose nor too tight....

 Jars： Glass Jar (Heavy, Luxury, and Temperature-Resistant) Glass Jar come in a variety of formats, including jars, bottles, and vials, making them ideal for products requiring the utmost purity. Amber or frosted glass variants offer UV protection, protecting light-sensitive ingredients like retinol or vitamin C from degradation. Plastics Jar (such as PETG, ABS, and PP, which are lightweight and easy to process) are widely valued for their durability and cost-effectiveness. High-density polyethylene (HDPE) and polypropylene (PP) are common choices, offering chemical resistance and lightweight advantages. Plastic jars with screw-top lids are suitable for body butters and thicker lotions. Features: Classic and traditional, easy to use, and easy to show the paste texture and color. However, the contents are frequently in contact with air and fingers, which requires a high level of antiseptic system. Applicable to: Luxurious nourishing facial creams, sleeping masks, massage creams, ne...

For skincare brands, the texture and quality of glass bottles directly impact product premiums, and the manufacturing process is crucial to determining quality. Currently, mainstream glass bottle manufacturing processes primarily focus on blowing, tubing, and drawing. Different processes correspond to different product characteristics, necessitating distinct considerations when selecting suppliers. 1.The blowing process is an excellent representative of high-end skin care glass bottles. The blowing process is mainly used to manufacture bottles with complex shapes, thick walls, and high-end appearance. It is especially suitable for customized bottles, such as irregular essential oil bottles and retro cream jars. When selecting a blow-molded bottle supplier, focus on three key aspects: Mold development capabilities. A good supplier should possess independent mold design and processing capabilities, accurately reproducing details such as bottle body texture and bottle neck curvature based...

I.Color: Slight color deviation from the Pantone color chart will be determined based on the Pantone color chart. II.Finished Product Defects：Mold line misalignment is noticeable and can cause hand injuries. III. Common Appearance Defects: Cracks, chips, chipped corners, deformation, glass ripping, internal wall sticking, and sharp punctures that may affect the seal and pose a risk of injury. Cold marks, pitting, brush marks, wrinkles, stubble marks, scissor marks, base thickness variations, and minor scratches may also be present on the bottle. Discoloration, black spots, bubbles, and pinholes may be present elsewhere. IV.Foreign Objects: Broken glass, insects, metal, blood, and other issues. Check the bottle's interior and exterior for visible foreign objects such as oil, water, paper scraps, and small impurities. V. Process Spraying The sprayed surface is not smooth or flat; it may exhibit streaks, wrinkles, frosting, orange peel, or other defects. On the main viewing surface: Two p...

Test focus: Chemical Resistance: Products containing strong acids or bases, particularly those containing strong acids or bases, may corrode the glass surface. This corrosion may cause glass flakes to break off, form visible particles, or imperceptibly damage the integrity of the glass. Furthermore, these substances can dissolve alkali metal ions. If these ions accumulate on or within the glass, they can cause a dramatic shift in the glass's pH, altering its chemical properties and ultimately affecting its performance and lifespan. Inner layer surface treatment: whether the release agent, siliconizing agent or other inner coating is compatible with the contents, whether it migrates or affects the stability of the contents. Metal Cap/Pump Head Compatibility: While glass itself is inert, the accompanying metal cap (available in tinplate or aluminum) and pump head (made from various types of plastic and metal springs) must be compatible with the contents. This is because corrosion and rus...