• Glass bottle manufacturing process and supplier selection Aug 28 , 2025
    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...
  • Classification of dropper bottles Sep 05 , 2025
    1. Classification by Bottle Material: Glass, Plastic, Metal Glass dropper bottles: Their primary advantage is their chemical inertness, meaning they won't react with the contents. They're ideal for storing active ingredients (such as vitamin C serums and retinol serums) or corrosive liquids (essential oils and pharmaceutical solvents). Clear glass dropper bottles: Suitable for products that don't require light protection (such as regular toners and serums), making it easier to see how much is left. Dark glass dropper bottles (amber, cobalt blue): With built-in UV protection, they effectively block UV rays, preventing oxidation and deterioration of ingredients, making them the best choice for light-sensitive products. Plastic dropper bottles: Their primary advantages are lightness, drop resistance, and low cost, making them suitable for daily use and various office settings. However, care should be taken with the material to avoid chemical intrusion. PP dropper bottles: They offer excel...
  • Why do your glass bottles always have problems? Sep 10 , 2025
    From surface smoothness to pump head compatibility, we control quality across two dimensions. I. Appearance Quality Surface Smoothness: glass bottle bodies must be free of scratches, bubbles, pinholes, uneven shrinkage, and other defects. Even minute surface bubbles may harbor dirt or foster bacterial growth (posing significant risks for skincare and food products). We ensure uniform surface smoothness through a combination of visual inspection under natural light and tactile verification. Color Consistency: Colors must closely match the color swatch or Pantone number confirmed by the customer, with no visually discernible color variation permitted within the same batch. This requires suppliers to possess advanced color matching systems and stable masterbatch addition processes. Printing Durability: For screen printing, foil stamping, labeling, etc. Inspection should focus on print clarity, with particular emphasis on testing print adhesion and wear resistance. Common tests include the...
  • How to test the functionality of a glass bottle? Sep 12 , 2025
    Glass bottles are subject to various external forces during transportation, stacking, and daily use. We conduct mechanical tests that simulate actual scenarios to prevent product failures during end-use. Leakage test: Use a negative pressure seal tester to place the bottle under a specific vacuum degree to observe whether there is leakage or bubble generation to ensure that the contents will not leak or be contaminated. Drop test: This test simulates an accidental drop that may occur during transportation and handling. A bottle filled with contents (or a substitute) should not break or leak after being dropped from a specified height (such as 1 meter or 1.5 meters) onto a hard surface. Stacking Test: To simulate warehouse stacking conditions, we apply a 5 kg weight (or the equivalent of 10 layers of bottles) to a stack of filled bottles for 72 hours. The bottles must show no deformation, collapse, or seal damage. Bottle Cap Torque Test: A torque meter is used to measure the force requi...
  • Do not accept glass bottles in these situations Sep 19 , 2025
    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...
  • Glass packaging material compatibility test method? Sep 26 , 2025
    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...
  • 5 core technologies to shape high-end perfume bottles Oct 11 , 2025
    1.Precision mold technology The unique shape of perfume bottles (such as curved bottles and special-shaped bottle mouths) relies on precision molds. Precision mold technology determines the shape, size and detail accuracy of the bottle.Through high-precision CNC machine tools and computer-aided design, the mold can achieve complex patterns and curves. The mold is made using CNC machining technology.The accuracy can be controlled within ±0.01mm, which can accurately restore the design details.Whether it is a square bottle with sharp edges or a round bottle with smooth curves, the dimensions can be guaranteed to be consistent between batches. 2.Automated production and testing The automated assembly line can achieve seamless connection between glass melting, blowing, forming, and cooling and setting, and its production efficiency is more than 3 times higher than traditional manual methods.The automated inspection system uses visual sensors and artificial intelligence to accurately...
  • Three steps to quality control of perfume glass bottles Oct 17 , 2025
    As an artistic carrier, perfume bottles are also the protection of precious perfumes. The quality of perfume glass bottles has a great impact on the preservation of perfumes, the experience of using them, and the reputation of the brand.   Material inspection (IQC): First, the chemical composition of the glass material needs to be tested to ensure its high purity and the absence of harmful impurities, which directly affects the chemical stability of the bottle and prevents it from reacting with the perfume.Secondly, check the color, cleanliness and uniformity of the glass material. Any defects may cause bubbles, stones or streaks in the final product, affecting its appearance and strength.Inspect glass blanks, plastic particles, metal ingots, electroplated parts, seals, nozzle assemblies, etc.   Process Inspection (IPQC): During the glass melting and forming process, parameters such as temperature and pressure need to be monitored in real time to ensure process stability.The ...
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