Product Overview
Our plastic screw caps are universal PP plastic threaded bottle lids, widely matched with PET plastic beverage bottles, drinking water bottles, juice bottles, cosmetic dispensing bottles and daily chemical packaging containers. We supply 4 common calibers: 28mm, 30mm, 38mm, 45mm, equipped with two inner thread structures (Type A & Type B) for optional selection. Rich stock colors including red, blue, green, yellow, white, black, orange are available, and customized color, embossed logo, surface printing are supported. Made of food-grade PP raw material, featuring good sealing performance, anti-slip knurled side design for easy twisting, lightweight and durable. Directly supplied by Chinese professional plastic packaging factory, small trial orders acceptable, free samples offered (buyer bears shipping cost), one-stop packaging customization service for global wholesalers, beverage factories and daily chemical brands.
Core Selling Points
Complete Caliber Options: 28mm / 30mm / 38mm / 45mm four mainstream sizes, compatible with most standard plastic bottle mouths
Two Inner Thread Types: Type A multi-rib inner structure & Type B standard spiral thread, adapt to different bottle thread standards
Abundant In-Stock Colors: Red, royal blue, light blue, green, yellow, white, black, orange ready for shipment; Pantone color customization supported
Food-Grade PP Material: Safe, non-toxic, tasteless, compliant with food contact standards, suitable for drinking water & beverage packaging
Outer Knurled Anti-Slip Design: Vertical stripes on the side, great friction, effortless to tighten and open by hand
Excellent Sealing Effect: Built-in matching sealing structure, effectively prevent liquid leakage, ideal for liquid contents
Lightweight & Shock Resistant: Not easy to crack during transportation, lower logistics breakage cost
Customizable Service: Logo printing, embossing, exclusive color matching, size mold development available
Flexible MOQ: Large bulk orders & small trial wholesale both welcomed, competitive factory direct price
Stable Mass Production: Mature injection molding production line, fast lead time for bulk orders
Product Structure Analysis
1.Outer Knurled Body: Vertical striped texture around the cap outer wall, anti-slip when screwing on/off; glossy PP plastic surface, smooth texture.
2.Cap Top Plane: Flat top surface, convenient for printing brand logos, texts or patterns.
3.Inner Thread Structure:
Type A: Multi-circumference reinforcing rib inner wall, tighter fit, better anti-leakage performance
Type B: Conventional continuous spiral thread, universal compatibility, widely used for daily beverage bottles
4.Inner Sealing Platform: Inner bottom boss fits tightly with bottle mouth edge to block liquid outflow.
5.Whole Body Material: Polypropylene (PP), high toughness, resistant to low temperature and slight extrusion deformation.
Usage Installation Steps
- Confirm the caliber of your plastic bottle mouth, select the corresponding size screw cap.
- Check the inner thread type (Type A / Type B) to match your bottle thread structure precisely.
- Pour liquid contents into the bottle, clean up residual liquid on the bottle mouth.
- Align the cap with the bottle mouth, rotate clockwise tightly by hand or automatic capping machine.
- After tightening, the inner platform will closely press the bottle mouth to finish leak-proof sealing.
- To open: Rotate the cap counterclockwise until completely unscrewed.
Custom Parameter Table
| Item | Detailed Specification |
|---|
| Product Name | PP Plastic Screw Caps for PET Bottles |
| Available Sizes | 28mm, 30mm, 38mm, 45mm |
| Raw Material | Food Grade Polypropylene (PP) Plastic |
| Inner Thread Style | Type A Reinforced Rib Thread, Type B Standard Spiral Thread |
| Stock Colors | Red, Green, Blue, Yellow, White, Black, Orange |
| Custom Content | Custom Pantone Color, Logo Silk Printing, Embossed Mark |
| Application Container | Drinking water bottles, juice bottles, beverage bottles, cosmetic plastic bottles |
| Sample Policy | Free Samples Available, Buyer Undertakes International Freight |
| Packing | Plastic Inner Bag + 5-Layer Export Corrugated Carton |
| Main Advantage | Leak-proof, Anti-slip, Food Safe, Wide Compatibility |
Applicable Scenarios
- Beverage Industry Packaging: Mineral water, fruit juice, tea drinks, energy drink plastic bottle sealing
- Daily Liquid Packaging: Vinegar, edible oil, syrup, liquid condiment plastic bottles
- Home & Travel Supplies: Portable water bottles, refillable beverage storage bottles
- Cosmetic & Personal Care: Toner, lotion, body wash, hand sanitizer PET dispensing bottles
- Household Chemicals: Detergent, essential oil, liquid cleaner small plastic packaging cans
- Packaging Accessories Wholesale: Packaging distributors, cross-border e-commerce packaging supply sales
Our Factory Strength
We are a professional plastic injection molding packaging manufacturer with over 12 years experience dedicated to plastic bottle caps & packaging accessories:
- Dozens of automatic injection molding machines, daily output up to 3 million caps, ensure punctual delivery for large orders
- All raw PP materials pass food safety testing, meet EU food contact requirements for export
- Independent printing & embossing workshop, support personalized brand customization for global merchants
- Strict leak-proof sampling inspection before delivery, control defective rate below 0.3%
- Rich sea export experience, carton packaging anti-extrusion optimized for long-distance ocean transportation
- 24-hour online multilingual sales team, fast quotation and technical matching support
Packaging & Sea Freight Specification
| Content | Details |
|---|
| Inner Packaging | Classified by size, color and thread type, packed into moisture-proof PE bags separately |
| Outer Carton | Thickened export corrugated carton, printed fragile & moisture-proof shipping marks |
| Transportation Options | Sea Freight, Air Freight, International Express |
| After-sales Promise | Damaged caps caused by transportation will be reissued free of charge |
Advantages of Choosing Us
- Factory direct sale without middlemen, more favorable wholesale price, tiered discount for large quantity
- Four sizes & two thread types permanently in stock, mixed size & mixed color order acceptable
- Food-grade safe material, official test reports can be provided for customs clearance
- Flexible customization scheme, adjust cap structure and appearance according to your bottle design
- Thoughtful after-sales service, timely solve size matching and sealing problems for overseas customers
Kindly tell us your needed size, inner thread type, order quantity and color demands, we will send you the detailed price sheet, packing information and arrange free samples for you right away!
Get Your Custom Wholesale Offer Now
FAQ
1,How can we know these are really lead free and food grade?
As usual for glass we have common material , high white material, crystal white material, all these material are suitable for food
grade and lead free, we pass food grade test,no need to worry safety.
2, How can I get a sample to check your quality? Do you offer free sample?
-- Yes, free samples are available,direct trade assurance order is allowed. Only freight cost is on your side which will be
refundable once the order was placed. Or if you have a courier account, we can arrange samples by collected.
3,How about the Safe package and defective and broken questions?
-- For small order or samples, we all use bubble bags or foam to pack one by one, so far customers who placed small orders have
not yet feedback about the damaged problem.
--For large quantity of container order, we support the standard export pallet package or paper carton with safe egg packing. Also
we accept customized gift box.
--Other accessories like caps will put in another carton to avoid hitting. We will guarantee the broken rate under 0.2%.
--We will compensate the defective and broken bottles by your next order freely.
4,What surface handing could you support? Shall we do our logo on it?
--Sure, we can do the logo as you need and support decoration firing ,screen printing, hot stamping, frost, label printing etc.
--About printing color: it can be made according to PANTONE color number.
5, How about the sealing?
For glass jar, we have glass lids, plastic caps, metal caps and ect ,all these kinds of lids will be matched with the jar
perfectly and sealing very well. There is a small strip of rubber under the lid where the glass hits the lid. They seal pretty
well.Food-grade rubber in line with EU export standards,the lids are very easy to screw on and off. Just one twist for on and one
for off.
6,What about the lead time?
samples will be send within 12-24hours after we receive your payment;
small orders will be delivery within 7-10 days after we receive your payment.
large quantity orders will be delivery with 20-25days.
7,What is your payment?
For sample or trial order,we accept Paypal,western union and trade assurance.
For larger orders,T/T or L/C or trade assurance will be acceptable.
8,What's your shipping terms?
For samples or trial order,FEDEX,DHL,UPS ,TNT,ARAMEX can be provided.
For larger orders,delivery by air or sea or rail accord to your requirements, we will try to help you to choose the best way depending your actual situation.
