Cart(Features: Pull to open, easy to use, thick inner pad, good sealing. Gaskets are odorless and defect-free. The top pattern is clearly printed and the workmanship is meticulous.
Plastic sport water bottle caps with various color design for sale
Appearance requirements:
① Cover surface: full molding, complete structure, no material shortage, no obvious damage, burrs and deformation;
②The color of the cover body: it conforms to the allowable limit of the standard sample, and the color is uniform;
③Sealing ring: no damage, deformation, strain;
④Side seal and top seal: no air bubbles or damage;
⑤Thread: Slight strain on the thread at the non-starting point is allowed, not less than the lower limit of the inner diameter of the thread;
⑥Connecting bridges (tangent points): no breakpoints, adhesions or not full;
⑦ Gate (injection cover): no perforation or cracking, no obvious gate residue or depression;
⑧ Pollution: no oil, dirt, rust, impurities;
⑨Printing: The pattern is clear, there are no defects such as missing printing, missing printing, etc., which meets the allowable limit of poor color registration, cross-inking, and pattern color, and the allowable center deviation of partial printing is ±0.3mm.
Qualification criteria for plastic bottle caps:
⑴Specification requirements:
①Internal dimensions (±0.15mm): thread inner diameter, inner plug outer diameter, top wall thickness
②External dimensions (±0.30mm): the outer diameter of the cover, the overall height of the cover
③Other indicators: single weight (±0.10g)
⑵ Appearance requirements:
① Cover surface: full molding, complete structure, no material shortage, no obvious damage, burrs and deformation;
②The color of the cover body: it conforms to the allowable limit of the standard sample, and the color is uniform;
③Sealing ring: no damage, deformation, strain;
④Side seal and top seal: no air bubbles or damage;
⑤Thread: Slight strain on the thread at the non-starting point is allowed, not less than the lower limit of the inner diameter of the thread;
⑥Connecting bridges (tangent points): no breakpoints, adhesions or not full;
⑦ Gate (injection cover): no perforation or cracking, no obvious gate residue or depression;
⑧ Pollution: no oil, dirt, rust, impurities;
⑨Printing: The pattern is clear, there are no defects such as missing printing, missing printing, etc., which meets the allowable limit of poor color registration, cross-inking, and pattern color, and the allowable center deviation of partial printing is ±0.3mm.
(3) Printing pattern adhesion performance:
①Hot water immersion method (hot filling cover): no obvious discoloration
② Peracetic acid soaking method (sterile cover): no obvious decolorization
③Tape sticking and peeling method: no obvious discoloration
| Name of the product | plastic caps | Material | plastic | |
| Internal dimensions | (±0.15mm) | Type of printing | Customize colors | |
| External dimensions | (±0.30mm) | Packaging | White poly bag , then packed in carton . | |
| Usage | Bottles.Water.Juice,soft drink | Feature | Non Spill | |
| Customized Order | Accept | Place of Origin: | Shandong,China | |
| Brand Name | Wonderfly | Model Number | WDF-07 | |
| Color | Customized | Size | Customized | |
| Application | Bottle usage | MOQ | Pure color:100,000pcsCustom logo:300,000pcs | |
| Logo | Custom logo | Sample | provided | |
| Packaging&delivery | Packaging Detail.10,000 pcs /carton . First , white poly bag ,then packed in carton . | |||
| Port | Qingdao,Tianjin | |||
| Quantity(pieces) | 1 - 100000 | >100000 |
| Est. time (days) | 7 | To be negotiated |
Plastic sport caps for Colorful design.
Cap material: plastic resin (HDPE or PP)
Bottle cap forming principle:
The plastic resin (HDPE or PP) + color masterbatch is mixed evenly, heated and sheared to a molten state, pressure-molded in a mold, and cooled to form.
PP (Polypropylene)
High temperature resistance, high rigidity and anti-collision performance
Suitable for hot filling, pasteurization and carbonated drinks
Food-grade, odorless and recyclable
HDPE (High Density Polyethylene)
High toughness, low temperature resistance and resistance to stress cracking
Suitable for cold filling, drinking water, fruit juice and dairy products
Cost-effective with stable sealing performance
EVA Gasket: General type with soft sealing for non-carbonated drinks
PE Sealing Gasket: High barrier performance for aroma retention, ideal for fruit juice & tea drinks
Integrated gasket-free sealing: Lightweight design preferred by high-speed filling lines, widely used for mineral water
Q1: What is the difference between flat screw caps and flip caps?
A1: Flat screw caps have no hinges or flip lids, featuring simpler structure, better sanitation, lower cost and wider printing area, perfectly matching high-speed filling lines with reusable sealing function.
Q2: Are 28mm PCO 1880 and 1881 interchangeable?
A2: Yes. Model 1881 is lightweight for plain drinking water; Model 1880 has thicker wall for beverages with slight internal pressure.
Q3: Can flat screw caps be used for carbonated drinks?
A3: Yes. Select thickened PP pressure-resistant flat screw caps, which can bear carbonation pressure without cap bulging or air leakage.
Q4: Is this cap suitable for hot filling?
A4: Yes. PP material withstands up to 110℃, suitable for 85–95℃ hot filling of fruit juice and tea drinks without deformation or leakage.
Q5: What causes loose twisting or liquid leakage?
A5: Common reasons include improper capping torque, non-standard bottle mouths, offset gaskets or deformed caps. All our products pass 100% factory inspection with qualified sealing performance under normal use.
Q6: Can you provide free samples?
A6: Free samples are available, buyers only need to cover courier fees for dimension, screwing, sealing and printing tests.
Q7: What is the production lead time?
A7: In-stock blank caps: 3–7 working days; custom printed caps: 10–15 working days after artwork confirmation.
Q8: Can flat screw caps be reused multiple times?
A8: Yes. They can be tightened and twisted open repeatedly, ideal for separate drinking and outdoor carrying.
Features: Pull to open, easy to use, thick inner pad, good sealing. Gaskets are odorless and defect-free. The top pattern is clearly printed and the workmanship is meticulous.
Tamper evident cap is specifically designed for essential oil glass bottles with an 18 DIN neck finish. It is designed for the euro dropper bottle for essential oil perfume packing.
Airtightness, which protects the contents, which is the basic function of the bottle cap;
Sealing structure: no gasket cover from inside to top to there are three external sealing structures, which are the sealing ring, the top sealing ring and the side sealing ring.
