Valve system for formula cartridge
A valve system comprises: a valve body; a valve cap; and a valve plug between the valve body and valve cap is compressed radially and axially, and a central bore extends wholly through the valve body and valve cap and partially through the valve plug. The valve system is welded to a packet which can contain a hair color formula. One or more of the packets are then used in a cartridge compatible with a dispensing device.
1. A valve system, comprising:
a valve body;
a valve cap; and
a valve plug between the valve body and valve cap is compressed radially and axially, and a central bore extends wholly through the valve body and valve cap and partially through the valve plug;
the valve body further comprises a flange with a first and second barb securing the valve cap to the valve body.
2. The valve system of claim 1 , wherein the valve plug is a silicone or silicone copolymer elastomer.
3. The valve system of claim 1 , comprising a coating on the exterior of surface the valve plug.
4. The valve system of claim 1 , wherein the valve plug comprises more than one section with different outer diameters.
5. The valve system of claim 4 , comprising a conical section between the more than one sections with different outer diameters.
6. The valve system of claim 1 , wherein the valve body comprises a plurality of fins on the circumference of the valve body.
7. The valve system of claim 1 , wherein the valve cap comprises flanges with slots engaged with the first and second barbs.
8. The valve system of claim 6 , wherein the flange is elliptical.
9. The valve system of claim 1 , wherein the valve body comprises a disk with a hole, and the valve plug is supported on the disk.
10. A packet, comprising:
one or more sheets welded together to secure the valve system of claim 1 in a weld; and
a hair color formula in the packet.
11. A cartridge, comprising:
an exterior housing; and
the packet of claim 10 secured to the exterior housing through the valve system.
12. The cartridge of claim 11 , comprising a first and second packet, wherein the first packet includes a hair color formula and the second packet includes a developer.