| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 3919905060 | Doc | 60.8% | CN | US | 2025-05-12 |
| 3919901000 | Doc | 61.5% | CN | US | 2025-05-12 |
| 3920995000 | Doc | 60.8% | CN | US | 2025-05-12 |
| 3920991000 | Doc | 61.0% | CN | US | 2025-05-12 |
| 4016990300 | Doc | 58.0% | CN | US | 2025-05-12 |
| 4008111000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 4008210000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 4819504060 | Doc | 55.0% | CN | US | 2025-05-12 |
| 4819504020 | Doc | 55.0% | CN | US | 2025-05-12 |
| 9619000500 | Doc | 42.5% | CN | US | 2025-05-12 |
| 9619009000 | Doc | 44.5% | CN | US | 2025-05-12 |
Self-Sealing Pocket
A self-sealing pocket, also known as a self-closing bag or auto-sealing bag, is a type of flexible packaging designed to create an airtight and watertight closure without the need for additional fasteners like zippers, clips, or heat sealing. They rely on a specialized adhesive system along the opening of the bag to bond the flaps together when pressed.
Material
- Polyethylene (PE): The most common material due to its low cost, flexibility, and good moisture barrier properties. Different densities of PE (LDPE, MDPE, HDPE) are used depending on the application's requirements.
- Polypropylene (PP): Offers higher temperature resistance and better clarity than polyethylene, suitable for applications where heat resistance is needed.
- Co-extruded Films: Multiple layers of different polymers can be combined to enhance specific properties like strength, oxygen barrier, or puncture resistance.
Purpose
The primary purpose of self-sealing pockets is to provide a convenient, secure, and reliable method of containment for various items, protecting them from:
- Moisture: Preventing damage from humidity or water exposure.
- Dust and Contaminants: Maintaining cleanliness and preventing particle ingress.
- Air Exposure: Protecting oxygen-sensitive items from oxidation or degradation.
- Loss or Spillage: Containing small parts or powders.
Function
The self-sealing mechanism is achieved through a pressure-sensitive adhesive (PSA) applied along the flap edges. When the flaps are pressed together, the adhesive bonds, creating a seal. The adhesive is formulated to provide sufficient tack for a strong closure but also allow for easy opening when needed. The strength of the seal depends on factors like adhesive type, pressure applied, and surface cleanliness.
Usage Scenarios
- Food Packaging: Storing snacks, sandwiches, baked goods, and other perishable items. Often used for single-serve portions.
- Pharmaceutical Packaging: Containing medications, samples, and medical devices. Requires high levels of cleanliness and barrier protection.
- Hardware and Small Parts: Packaging screws, nuts, bolts, and other small components.
- Evidence Bags: Used by law enforcement and forensic teams to collect and preserve evidence.
- Document Protection: Protecting important papers and files from moisture and damage.
- Retail Packaging: Packaging jewelry, accessories, and other small retail items.
- Laboratory Samples: Containing and transporting biological or chemical samples.
Common Types
- Flat Bottom Bags: Offer a stable base for standing upright.
- Side Gusseted Bags: Expandable sides to accommodate larger volumes.
- Block Bottom Bags: Provide a rectangular base for efficient stacking.
- Zipper-Lock Bags (with Self-Sealing Flaps): Combine the convenience of a zipper with the added security of a self-sealing flap.
- Reclosable Bags: Designed for multiple openings and closures.
- Custom Printed Bags: Bags with logos, branding, or product information printed on the surface.
Based on the provided information, the following HS codes may be relevant to “self sealing pocket”:
- 3919905060: This HS code covers self-adhesive plates, sheets, film, foil, tape, strip and other flat shapes, of plastics, whether or not in rolls, categorized as “Other: Other”. This could apply if the self-sealing pocket is made of plastic film and is supplied in a flat form. The total tax rate is 60.8%, comprising a basic tariff of 5.8% and an additional tariff of 25.0%, increasing to 30.0% after April 2, 2025.
- 3919901000: This HS code also covers self-adhesive plates, sheets, film, foil, tape, strip and other flat shapes, of plastics, whether or not in rolls, specifically “Other: Having a light-reflecting surface produced in whole or in part by glass grains (ballotini)”. If the self-sealing pocket incorporates a light-reflecting surface created with glass grains, this code would be applicable. The total tax rate is 61.5%, consisting of a basic tariff of 6.5% and an additional tariff of 25.0%, rising to 30.0% after April 2, 2025.
- 4819504060: This HS code covers cartons, boxes, cases, bags and other packing containers, of paper, paperboard, cellulose wadding or webs of cellulose fibers; box files, letter trays and similar articles, of paper or paperboard of a kind used in offices, shops or the like, specifically “Other packing containers, including record sleeves: Other Other: Other”. If the self-sealing pocket is constructed from paper or paperboard and functions as a packaging container, this code may be relevant. The total tax rate is 55.0%, with a basic tariff of 0.0% and an additional tariff of 25.0%, increasing to 30.0% after April 2, 2025.
It is important to note that the final HS code classification will depend on the material composition and intended use of the self-sealing pocket.