Plastic Packaging Suppliers Series

Introduction: A foam pump is a precision device that uses physical foaming technology to convert liquids into fine foam. It is widely used in personal care, medical disinfection, and household cleaning. Its core technology involves gas-liquid mixing and microporous filtration to achieve liquid atomization. The following analysis covers three aspects: technical principles, production processes, and application scenarios. The content of this article is for reference only by procurement professionals within the Youpin community:



ONE

Technical Principles











1. Gas-Liquid Mixing Mechanism



Foam pumps achieve dynamic gas-liquid ratio control through an internal gas-liquid mixing chamber:



Negative pressure liquid suction: When the pump head is pressed, the piston movement creates negative pressure, drawing liquid from the reservoir into the pump chamber;



Air intake: Simultaneously, external air is drawn in through side wall intake ports, with a gas-to-liquid ratio typically ranging from 1:3 to 1:5 (by volume);



Turbulent mixing: High-speed flowing liquid and air form turbulence within the mixing chamber, initially generating a gas-liquid mixture.



2.Microporous foaming technology




Foam net structure: The core component is a multi-layer stainless steel or nylon microporous filter net (pore size 10–50 μm). When liquid passes through the filter net under high pressure, it is cut into tiny droplets, which combine with air to form uniform foam;



Foam stability: Surfactants (such as sodium laureth sulfate) are added to reduce liquid surface tension and extend foam retention time.



3. Anti-backflow design

A dual-valve system (bottom check valve + outlet check valve) ensures that the liquid and air channels are sealed when not pressed, preventing liquid evaporation or contamination.





TWO

Manufacturing Process

1.Key Material Selection



Pump body material: The main body is made of chemically corrosion-resistant PP (polypropylene) or PETG (polyethylene terephthalate), with food-grade certification;



Foam net: 316L stainless steel or food-grade nylon, with uniform pore sizes formed through laser perforation or micro-pore sintering processes;



Seals: Fluororubber or silicone gaskets, resistant to aging and compatible with high acid-alkali liquids.





2. Precision Manufacturing Process



Injection molding: The pump body and gas-liquid mixing chamber are injection molded using high-gloss molds (mirror polishing Ra ≤ 0.1 μm) to reduce flow resistance;



Filter mesh processing: Laser perforation accuracy of ±2 μm, or sintering process to form a porous structure from metal powder at high temperatures;



Automated assembly: Robotic arm assembly of the gas-liquid mixing chamber and filter mesh, with a gas tightness test pressure of 0.4 MPa and a leakage rate of <0.1%.







3. Quality control standards



Foam testing: Using a 50 cps viscosity liquid (simulating hand sanitizer), single foam output volume of 0.4cc-2cc, foam density of 0.05–0.1 g/cm³;



Durability verification: Foam quality degradation rate <15% after 5,000 presses;



Microbial protection: Some medical-grade pump bodies include UV sterilization processes, compliant with ISO 13485 standards.

✨The golden duo in skincare & personal care! (Lotion pump dispenser) + (Plastic bottle) unlock dual peaks of product freshness and user convenience. As a professional manufacturer of washing and care packaging materials, Guangdong Hongyuan empowers every skincare gem with high-quality solutions!



In skincare and personal care, packaging directly impacts product performance and user satisfaction. The lotion pump is an absolute must-have dispensing system! Practical, hygienic, and efficient, it handles viscous formulas like creams, serums, and lotions with ease. Paired with a premium plastic bottle, it delivers convenience and product integrity for everything from daily moisturizers to professional beauty treatments.



�� Precise dispensing, zero waste! Each press of the lotion pump delivers a controlled, consistent 2cc-4cc dose. Its smooth-action mechanism effortlessly dispenses even thick textures like body lotions, creams, and sunscreens, minimizing waste while ensuring optimal results—a core design strength for lotion pump suppliers and manufacturers.



�� Durable and hygienic for ultimate peace of mind! Crafted from robust materials like polypropylene (PP), these pumps boast strong chemical resistance and long-lasting durability. Their internal spring mechanism withstands repeated use. Features like lockable or twist-lock mechanisms, paired with sealed plastic bottles, prevent leaks and theft, ensuring ultra-safe transport and storage. Especially, the airless configurations crafted by lotion pump factories minimize oxidation and contamination, extending the shelf life of sensitive formulations. Combined with the barrier properties of PET bottles, they provide dual protection for product freshness!



�� Versatile for all scenarios! Our lotion dispenser pumps are widely used for facial/body moisturizers, serums, liquid soaps, hair care products, etc. pump bodies from plastic lotion pump suppliers seamlessly integrate with packaging from PET plastic bottle manufacturers and PET plastic bottle suppliers. They even pair perfectly with PET jar manufacturers for specialized care products, effortlessly handling medical creams and baby care items.



�� Empower brands with customization! Lotion pumps support customization for neck sizes (24/410, 28/410), dispensing volume, actuator styles, and color finishes. Plastic bottle suppliers and plastic bottle supplies offer diverse bottle options, while wholesale empty plastic bottles meet bulk procurement needs. As a professional manufacturer of personal care packaging, Guangdong Hongyuan ensures precise pump-to-bottle compatibility, helping brands create exclusive packaging that boosts shelf appeal.





Choosing the right lotion pump and plastic bottle is half the battle for skincare product success! Leveraging its manufacturing expertise, Guangdong Hongyuan integrates resources from lotion pump factories and PET bottle manufacturers to deliver one-stop packaging solutions for skincare & personal care brands. Balancing functionality, hygiene, and aesthetics, we empower products to achieve both stellar reputation and robust sales.

Deodorant Balm Packaging & Filling Process Guide: Gravity Filling vs. Bottom Filling



The sophistication of summer lies in the details no one notices. A high-quality deodorant balm hides secrets from formula to production process—for instance, the "filling technology" you may overlook directly impacts user experience and product quality. Even the material selection and process compatibility of a solid balm container must be overseen by a professional deodorant stick container manufacturer.







The "Filling Knowledge" of Deodorant Balms: Big Differences Between Gravity Filling and Bottom Filling





Many people only focus on the scent when buying deodorant balm, ignoring the "invisible standard" of filling technology. Different processes result in vastly different balm textures—this is why some balms clump while others are smooth and silky. A premium deodorant stick container can further amplify the advantages of the filling process:



Gravity Filling: Classic, Stable, and Cost-Effective



Gravity filling is the most commonly used process for deodorant balms. Simply put, melted balm raw materials are poured directly into the container through its opening. This mature, cost-controllable process is ideal for mass-produced budget-friendly products and is the basic collaboration option for most solid balm packaging suppliers.







Its strengths include high production efficiency and the ability to quickly meet market demand. However, note that improper temperature control during filling may cause tiny bubbles or lines on the balm surface, though this does not affect core performance. It can be paired with a standard solid balm container for a perfect fit, making it a great entry-level choice for students.





Bottom Filling: Exquisite, Smooth, and a Favorite of Quality Seekers



Bottom filling is far more sophisticated: containers are first inverted, and melted balm is injected from the bottom before being flipped back to their upright position once cooled and solidified. This process demands precise control of temperature and flow rate, requiring specialized equipment for accurate operation—usually only achievable by custom balm packaging manufacturers with customization capabilities.





As a result, it costs significantly more than gravity filling. Its benefits are notable, however: the balm has a more uniform density, a smooth, bubble-free surface, and a texture as silky as melted butter, ensuring a grain-free application. Additionally, the balm adheres more tightly to an airtight balm container, reducing the risk of oxidation and deterioration. For those pursuing superior user experience, bottom-filled products are the top choice.





Why Is Bottom Filling More Expensive? It’s Tied to Packaging and Equipment



Many wonder about the cost difference of bottom filling. Its higher price is not simply due to more packaging components, but a combination of stricter packaging requirements and complex production steps—this is also the core technical barrier for professional deodorant stick container manufacturers:



More Precise Packaging Design, with Sealing and Pressure Resistance as Key Factors



For bottom filling, the deodorant stick container must have a precisely positioned filling port at the bottom, which requires secondary sealing after filling to prevent leakage or oxidation. Unlike the simple open-top packaging used for gravity filling, solid balm containers dedicated to bottom filling need additional structures like sealing valves and pressure-resistant bases.





They also require food-grade materials that can withstand high and low temperatures to avoid deformation during filling due to temperature changes. These factors all drive up packaging costs and serve as core indicators for solid balm packaging suppliers to grade their products.





High Equipment and Technical Thresholds Reduce



Cost-Effectiveness Bottom filling requires specialized inverted filling equipment to precisely control balm temperature, filling pressure, and flow rate, preventing bubble formation. The cooling and solidification stage also needs a constant temperature and humidity environment to avoid balm shrinkage or cracking.





The purchase and maintenance costs of such equipment are far higher than those of ordinary gravity filling equipment. Meanwhile, the complex process reduces production efficiency by over 30% compared to gravity filling, naturally increasing labor and energy costs per unit product—this is one reason custom balm packaging manufacturers quote higher prices.





Increased Quality Control Costs with Strict Defect Rate Requirements





Bottom filling emphasizes "exquisite texture," imposing much higher standards for balm surface smoothness and density uniformity than gravity filling, especially when paired with an airtight balm container to ensure quality. Multiple manual or machine inspections are required during production to remove defective products with surface lines or bubbles.





In contrast, gravity filling is more tolerant of such minor flaws. The difference in quality control costs further contributes to the higher pricing of bottom-filled products.





Brief Summary



For limited budgets, choose gravity filling and pair it with a basic solid balm container for optimal cost-effectiveness. For those pursuing exquisite texture and premium quality, collaborate with a professional custom balm packaging manufacturer to customize a combination of bottom filling technology and an airtight balm container—it’s well worth the investment.

Choose the Right Laundry Detergent Bottle Material for Peace of Mind! Why Have PE Laundry Detergent Bottles Become Mainstream?


When buying laundry detergent, people usually pay attention to the formula and fragrance but rarely notice the packaging bottle. However, for both brands and consumers, the material of the laundry detergent bottle directly affects the user experience, transportation safety, and even product quality.





Among various materials, PE plastic bottles have long become the industry mainstream with their solid strength. For plastic container suppliers, this type of packaging is also a core category for undertaking daily chemical orders, as it can perfectly meet relevant needs. Today, we will break down its core advantages and tell you why it has become the dual first choice for both brands and consumers!





I. Core Advantage 1: Durable and Shatter-Resistant, Zero Worries About Transportation and Storage
Most laundry detergents come in large-capacity packaging of 1-5L, which is quite heavy when filled with liquid. The bumps during transportation, collisions during handling, and accidental drops during household use are all "tests" for the bottle body. The strong toughness of PE material perfectly copes with these scenarios:





PE has excellent impact resistance. Tests have shown that when dropped from a height of 1.2-1.5m onto a hard ground, the bottle body is not easy to break or leak—an advantage that is hard to match with materials such as PP and PET. Even in the low-temperature environment of northern winters, PE bottles will not become brittle and easy to crack like other materials, and can easily adapt to storage conditions in different regions.





For brands, it can greatly reduce the transportation damage rate and lower after-sales costs; for consumers, whether placed on the balcony or in the bathroom, there is no need to worry about liquid leakage and pollution from daily bumps.





II. Core Advantage 2: Chemical Stability, Safeguarding Laundry Detergent Quality Without Compromise


Laundry detergent has a complex composition, including surfactants, builders, fragrances, softeners, etc. Some products are also weakly alkaline. If the packaging bottle material has poor chemical resistance, it is easy to cause the bottle body to swell, crack, or even release harmful substances to contaminate the laundry detergent, affecting the use effect and safety. Its chemical stability is extremely strong, which can be called a "safety shield" for laundry detergent.







It will not react with any components in the laundry detergent, and can firmly lock the liquid inside the bottle. It will neither deform or damage the bottle body, nor contaminate the laundry detergent or change its formula performance. Even for long-term storage, it can ensure the stable quality of the laundry detergent—which is one of the core reasons why major daily chemical brands prefer to choose it as plastic packaging for products.







III. Core Advantage 3: Strong Adaptability, Balancing Practicality and Cost-Effectiveness
For brands, the processing difficulty and cost of packaging bottles directly affect product pricing. PE material has obvious advantages in this regard:




Flexible Processing: This material can be easily made into bottles of various shapes and capacities through blow molding technology, and can also be integrally formed with practical structures such as handles and scale lines.





For example, the handle of the common large-capacity laundry detergent bottle is a reflection of this advantage, with a comfortable and firm grip. Whether it is a conventional round bottle or a customized special-shaped bottle, it can be easily adapted, facilitating plastic packaging suppliers to meet the needs of different brands.






Controllable Cost: Its raw material price is relatively affordable, and the processing technology is mature, making it suitable for large-scale mass production. For plastic packaging manufacturers and brands, it can control costs while ensuring packaging quality, making the product more cost-effective; for consumers, they can also indirectly enjoy a more reasonable price.





IV. Core Advantage 4: Sealing and Environmental Protection, Full of Details to Enhance Experience


It has excellent sealing performance. Combined with screw caps, pumps, etc., it can effectively block air and moisture from entering the bottle, avoid the laundry detergent from getting damp, oxidizing and deteriorating, and extend the product shelf life. After daily use, tighten the cap, and there is no need to worry about liquid leakage even if inverted, which is convenient for storage and carrying.





More importantly, PE material is a recyclable plastic with a high recycling rate, which conforms to the current trend of environmentally friendly packaging. For plastic packaging companies, environmentally conscious brands and consumers, choosing PE laundry detergent bottles is not only a choice to follow the industry trend but also a contribution to green environmental protection.



V. Comparison with Other Materials: How Outstanding Are PE's Advantages?


Some people may ask, PP and PET bottles are also very common, so why choose PE? You will understand by looking at this set of comparisons:




PE vs. PP Material: PP material has good chemical resistance at room temperature, but poor low-temperature toughness, easy to become brittle and crack in winter, and the processing cost is slightly higher, so it is not suitable for large-capacity laundry detergent bottles.





2. PE vs. PET Material: PET material has high transparency and good appearance, but poor impact resistance and easy to break when dropped; long-term contact with surfactants in laundry detergent may cause slight swelling, so it is not suitable for conventional large-capacity laundry detergent.



In summary, from the transportation safety, cost control, and quality protection concerned by plastic bottle suppliers to the user experience, cost-effectiveness, and environmental protection needs valued by consumers, PE laundry detergent bottles have delivered a perfect answer. Its mainstream status is never accidental, but a two-way fit between strength and demand.

30ml Sunscreen Squeeze Packaging: Compact Size with Smart Design, Your Key to On-the-Go Sun Protection!


Tired of bulky large bottles, yet worried that small ones won’t last long enough? This 30ml plastic squeeze-on packaging with a stopper, a best-selling Sunblock Plastic Container specially designed for sunscreen, truly delivers the freedom of convenient touch-up applications!





✅ 30ml Perfect Capacity: A Dream Come True for Portability Enthusiasts



Ideal for all on-the-go scenarios! It fits effortlessly into your pocket, small cross body bag, or makeup pouch, taking up zero extra space. Whether you’re commuting to work, going on a date, or taking a short trip, just slip one in and go—no more hauling around heavy sunscreen bottles! What’s more, it’s airport security-friendly, saving you the hassle of checking in your luggage. This Sunscreen Plastic Bottle is definitely your go-to skincare companion for easy travel!





✅ Stopper Design + Premium Plastic: Maximum Reliability and Peace of Mind



Don’t underestimate this little stopper—it’s the ultimate leak-proof hero! Combined with a screw-on airtight cap, you’ll never have to worry about sunscreen leaking into your bag again. Crafted from high-quality plastic, the packaging is lightweight yet sturdy, resistant to drops and squeezes, so it can easily stand up to daily bumps and knocks.





Most importantly, the material is chemically stable and odor-free, ensuring it won’t react with the active ingredients in your sunscreen—your skincare safety is our top priority! This is what professional Sunscreen Packaging is all about—delivering uncompromising security in every detail!







✅ Squeeze-to-Dispense Mechanism: Precise Dosage, No Waste

The user-friendly squeeze design is a game-changer for portion control! Dispense exactly the amount you need—no more messy scooping from wide-mouth jars that leads to contamination. It works seamlessly with both lightweight and thick sunscreen textures, providing just the right amount for a full face and neck application every time. Touch-ups have never been so clean and hygienic!





✅ Thoughtful Details: A Winning Combination of Aesthetics and Functionality



Boasting sleek, streamlined bottle contours, we offer Custom Sunscreen Plastic Packaging services that allow you to personalize colors and logos. Whether for personal use or brand customization, it exudes top-tier quality and style.





Half of your summer sun protection confidence comes from your sunscreen—the other half comes from this practical, portable squeeze packaging! With its 30ml compact size, leak-proof stopper seal, and precise squeeze-to-dispense design, it’s perfectly suited for both daily touch-ups and travel use.





As a reliable Sunscreen Packaging supplier, we offer Wholesale Sunscreen Packaging and stand as a reputable Bulk Sunscreen Bottle Supplier, fully catering to the bulk purchasing needs of brands! Upgrade your sunscreen with this game-changing packaging today and unlock a whole new level of hassle-free summer sun protection!