Professional Plastic Screw Caps with Inner Plug for Secure Bottle Packaging
In pharmaceutical, supplement, and cosmetic industries, closure performance is critical for product safety and leak prevention. Plastic screw caps with inner plug inserts provide additional sealing protection and controlled dispensing.
Supply-Packagings is a professional packaging manufacturer, factory, supplier, and wholesale partner specializing in:
✅ Plastic bottle caps & closures
✅ Pharmaceutical packaging components
✅ Supplement bottle packaging
✅ Cosmetic bottle packaging
✅ Jar packaging
✅ Flexible pouch packaging
✅ Custom paper box packaging
✅ OEM & ODM custom packaging solutions
This plastic screw cap with integrated inner plug is designed for liquid medicine bottles, supplement containers, and cosmetic packaging systems.
Core Selling Points – Why Choose Our Screw Caps with Inner Plug
Enhanced Leak Protection
▪ Inner plug insert for secondary sealing
▪ Tight screw thread engagement
▪ Compatible with induction liners
▪ Reduced leakage risk during transport
The internal plug improves sealing performance compared to standard flat caps.
Durable & Chemical-Resistant Material
▪ High-quality PP (Polypropylene)
▪ Suitable for pharmaceutical liquids
▪ Resistant to moisture and chemicals
▪ Stable under repeated opening
Ensures safe packaging for oral liquids, syrups, supplements, and cosmetic products.
Full OEM & ODM Customization Support
▪ Custom cap diameter (28mm / 38mm / Custom)
▪ Custom thread specification
▪ Custom plug design
▪ Custom color (black, white, custom Pantone)
▪ Logo embossing or printing
▪ Integration with bottle, jar, pouch, and paper box packaging
As a direct manufacturer and wholesale supplier, Supply-Packagings ensures consistent dimensional accuracy and production quality.
Detailed Product Description – Plastic Cap with Inner Plug
This closure system is suitable for:
• Syrup bottle packaging
• Liquid supplement bottles
• Cosmetic toner packaging
• Herbal extract containers
• Pharmaceutical liquid bottles
Compared to standard screw caps, caps with inner plugs provide:
• Additional internal sealing layer
• Controlled liquid dispensing
• Improved safety during shipping
• Enhanced pharmaceutical-grade appearance
Compatible with PET, HDPE, and glass bottle packaging.
Functional Structure Breakdown
Cap Body Construction
▪ Injection-molded PP
▪ Smooth top surface
▪ Textured grip edge
▪ Custom thickness options
Inner Plug Insert
▪ LDPE or PP plug
▪ Dome-shaped insert
▪ Leak-resistant design
▪ Compatible with liquid viscosity variations
Thread & Seal Compatibility
▪ Continuous thread design
▪ Tamper-evident band option
▪ Induction seal compatibility
▪ Pressure-sensitive liner option
Branding & Decoration Options
▪ Top embossing
▪ Screen printing
▪ Custom warning symbol
▪ Matte or glossy finish
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Plastic Screw Cap with Inner Plug |
| Material | PP + LDPE Insert |
| Diameter | 28mm / 38mm / Custom |
| Thread Type | Continuous Thread |
| Surface Finish | Matte / Gloss |
| MOQ | 10,000 pcs |
| OEM / ODM | Available |
| Application | Pharma / Supplement / Cosmetic |
| Factory Type | Direct Manufacturer |
Industries We Serve
Supply-Packagings supports:
✅ Pharmaceutical manufacturers
✅ Nutraceutical brands
✅ Liquid supplement companies
✅ Cosmetic packaging suppliers
✅ Healthcare distributors
✅ Wholesale packaging suppliers
We integrate plastic caps, bottle packaging, jar packaging, blister packaging, flexible pouch packaging, and custom paper box packaging into complete packaging systems.
Application Scenarios
▪ Cough syrup bottle closure
▪ Vitamin liquid packaging
▪ Herbal medicine container
▪ Cosmetic toner bottle cap
▪ Laboratory solution bottle
▪ Export pharmaceutical packaging
Suitable for pharmacy, hospital, retail, and global export markets.
Buyer Pain Points & Our Solutions
Problem: Leakage During Shipping
Solution: Inner plug design provides secondary sealing protection.
Problem: Cap Not Compatible with Bottle Neck
Solution: Custom thread design ensures accurate neck compatibility.
Problem: Inconsistent Quality from Supplier
Solution: Direct factory production ensures strict quality inspection and dimensional consistency.
Problem: Managing Multiple Packaging Vendors
Solution: One-stop packaging factory offering cap, bottle, jar, pouch, and paper box integration.
Why Choose Supply-Packagings
✔ Direct packaging manufacturer
✔ Competitive wholesale pricing
✔ Strong OEM & ODM customization capability
✔ Advanced injection molding technology
✔ Strict quality inspection standards
✔ Stable global export experience
We help pharmaceutical and supplement brands ensure reliable packaging performance.
Packaging & Logistics
▪ Bulk inner polybag packing
▪ Export-standard corrugated cartons
▪ Palletized shipment available
▪ Sea freight / Air freight / Express delivery
▪ Custom carton labeling support
Lead Time:
Sample: 5–7 working days
Mass Production: 15–25 working days
FAQ
Can you customize the inner plug shape?
Yes. We provide OEM custom plug development based on product requirements.
Is food-grade material available?
Yes. Food-grade PP and LDPE materials are available for pharmaceutical and supplement packaging.
What is your MOQ for wholesale production?
Standard MOQ starts from 10,000 pieces depending on customization.
Do you provide matching bottle packaging?
Yes. We offer bottle packaging, jar packaging, blister packaging, flexible pouch packaging, and custom paper box solutions.
Customer Testimonials
“Reliable screw caps with inner plug — excellent sealing performance.” – US Pharmaceutical Brand
“Professional OEM closure manufacturer with stable quality.” – EU Healthcare Company
“Competitive wholesale partner with consistent delivery.” – AU Distributor
Explore More Packaging Solutions
Supply-Packagings also manufactures:
▪ Pharmaceutical Blister Packaging
▪ Supplement Bottle Packaging
▪ Glass Vial Packaging
▪ Cosmetic Bottle Packaging
▪ Flexible Pouch Packaging
▪ Tin Jar Packaging
▪ Custom Paper Box Packaging
Visit our products page for complete packaging development support.
Start Your Custom Closure Packaging Project Today
If you are searching for a trusted plastic screw cap manufacturer, packaging supplier, OEM factory, or wholesale custom packaging partner, Supply-Packagings is ready to support your pharmaceutical and supplement packaging development.
Send us your cap size, thread specification, and order quantity. Our professional team will provide a fast quotation and tailored packaging solution.
Ensure reliable bottle sealing with custom plastic screw caps — Contact Us today to begin your custom packaging project.
评价
目前还没有评价