Filter making apparatus

• US 8,408,215 B2
• Filed: 04/20/2009
• Issued: 04/02/2013
• Est. Priority Date: 04/18/2008
• Status: Active Grant

• Current Assignee: Philip Morris USA Incorporated (Altria Group, Inc.)
• Original Assignee: Philip Morris USA Incorporated (Altria Group, Inc.)
• Inventors: Cantieri, Fabio, Libbra, Roberto
• Primary Examiner(s): FRANKLIN, JODI COHEN
• Application Number:
  US12/426,565
• Publication Number:
  US 20090260643A1
• Time in Patent Office: 1,443 Days
• Field of Search: 131/200, 131/274, 131/275, 131/335, 131/344, 131/70, 131/285, 131 77- 78, 131 841- 843
• US Class Current: 131/77
• CPC Class Codes: A24D 3/0212 Applying additives to filter materials
• CPC Class Codes: A24D 3/022 with liquid additives, e.g. application of plasticisers

Abstract

The invention concerns a filter making apparatus comprising: a filter material converging device, a flavor element positioning device comprising a passage element, the passage element comprising a passageway, a first inlet, a second inlet, and an outlet, the first inlet and second inlet being in fluid communication with the passageway, wherein the first inlet is adapted to pass a continuous strand of material into the passage element, wherein the second inlet is adapted to pass fluid into the passage element, and wherein the outlet is positioned at a point downstream from at least a portion of the filter material converging device, wherein the passage element is adapted to pass through the second inlet and into the filter material either the continuous strand of material from the first inlet, or fluid from the second inlet, or the continuous strand of material from the first inlet together with fluid from the second inlet.

Claims

1. A filter making apparatus comprising:

a filter material converging device;

a flavor element positioning device including a passage element, the passage element having a passageway, a first inlet, a second inlet, and an outlet, the first inlet and second inlet being in fluid communication with the passageway, wherein the first inlet is adapted to pass a continuous strand of material into the passage element, wherein the second inlet is adapted to pass fluid into the passage element, and wherein the outlet is positioned at a point downstream from at least a portion of the filter material converging device;

wherein the passage element is adapted to pass through the second inlet and into the filter material either the continuous strand of material from the first inlet, or fluid from the second inlet, or the continuous strand of material from the first inlet together with fluid from the second inlet;

wherein the flavor element positioning device further includes a needle attached to the outlet of the passage element;

wherein the apparatus includes a pneumatic piston for longitudinally positioning the passage element in a longitudinal direction, such that the needle is movable in and out of the filter material; and

wherein the apparatus includes a vertical positioning apparatus adapted to move the passage element in a vertical direction into and out of the vicinity of the filter material converging device, as well as to a maintenance position.

2. The filter making apparatus according to claim 1, wherein the fluid is a liquid flavorant.

3. The filter making apparatus according to claim 2, wherein the heating device is adapted to heat the fluid in the passage element.

4. The filter making apparatus according to claim 1, wherein the apparatus further comprises a heating device adapted to heat the fluid.

5. The filter making apparatus according to claim 1, wherein the apparatus further comprises a valve remote from the flavor element positioning device to control the fluid entering the passage element.

6. The filter making apparatus according to claim 1, wherein the needle includes a tip and the position of the tip of the needle is juxtaposed at the end of the filter converging device, where the filter material reaches its final shape.

7. The filter making apparatus according to claim 6, wherein the position of the tip of the needle is disposed in the filter converging device, where the passageway has a diameter less than double the diameter of the final shape of the filter material.

8. The filter making apparatus according to claim 6, wherein the position of the tip of the needle is disposed in the filter converging device, where the passageway has a diameter between about 150 percent and about 110 percent of the final diameter of the filter material.

9. The filter making apparatus according to claim 8, wherein the position of the tip of the needle is disposed in the filter converging device, where the passageway has a diameter between about 140 percent and about 120 percent of the final diameter of the filter material.

10. The filter making apparatus according to claim 1, wherein the filter making apparatus includes two to four flavor element positioning devices.

11. The filter making apparatus according to claim 10, wherein the two to four flavor element positioning devices are arranged such that two to four parallel, spaced apart, continuous strands of material may be applied to the filter material.