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US-12622455-B2 - Banded papers, smoking articles and methods

US12622455B2US 12622455 B2US12622455 B2US 12622455B2US-12622455-B2

Abstract

Wrapper for cigarette manufacture includes transversely extending band regions applied by a printing technique, such as gravure printing. The band regions comprise starch, an anti-wrinkling agent such as 1,2 propylene glycol or glycerin, and optionally calcium carbonate. Any suitable printing technique can be used to apply the aqueous solution to the banded regions. The pattern of banded regions may be bands, stripes, two-dimensional arrays, undulated regions, and the like along and/or around the tobacco rod. The pattern can be applied in one or more layers. The pattern may be configured so that when a smoking article is placed on a substrate, at least two longitudinal locations along the length of the tobacco rod have film-forming compound located only on sides of the smoking article not in contact with the substrate.

Inventors

  • Ping Li
  • Donald E. Miser
  • Milton E. Parrish
  • Firooz Rasouli
  • Rajesh K. Garg
  • Randall E. Baren
  • Marc W. Rose
  • Peter J. Lipowicz
  • Tony A. Phan
  • Timothy S. Sherwood
  • Szu-Sung Yang

Assignees

  • PHILIP MORRIS USA INC.

Dates

Publication Date
20260512
Application Date
20230109

Claims (19)

  1. 1 . A wrapper for a smoking article, the wrapper comprising: a base having a first permeability, the base including a first base side and a second base side, the first base side parallel to the second base side; a first banded layer having a second permeability, the second permeability being less than the first permeability, the first banded layer including, a first anti-wrinkling agent adjacent to the first base side; and a second banded layer having a third permeability, the third permeability being less than the first permeability and same as or different from the second permeability, the second banded layer including, a second anti-wrinkling agent adjacent to the second base side, and the second anti-wrinkling agent being same as or different from the first anti-wrinkling agent, at least one of the first banded layer and the second banded layer including 0.36 grams per square meter to 0.90 grams per square meter of the respective first or second anti-wrinkling agent.
  2. 2 . The wrapper of claim 1 , wherein the first banded layer includes, a first layer adjacent to the first base side, and a second layer disposed adjacent to an exposed surface of the first layer; the first layer includes a first starch, a first chalk, the first anti-wrinkling agent, or any combination thereof; the second layer includes a second starch, a second chalk, the first anti-wrinkling agent, or any combination thereof; the first starch is same as or different from the second starch; and the first chalk is same as or different from the second chalk.
  3. 3 . The wrapper of claim 1 , wherein the first banded layer includes, a first layer adjacent to the first base side, a second layer adjacent to an exposed surface of the first layer, and a third layer adjacent to an exposed surface of the second layer; the first layer includes a first starch, a first chalk, the first anti-wrinkling agent, or any combination thereof; the second layer includes a second starch, a second chalk, the first anti-wrinkling agent, or any combination thereof; the third layer includes a third starch, a third chalk, the first anti-wrinkling agent, or any combination thereof; the first starch is same as or different from the second starch; the second starch is same as or different from the third starch; the third starch is same as or different from the first starch; the first chalk is same as or different from the second chalk; the second chalk is same as or different form the third chalk; and the third chalk is same as or different from the first chalk.
  4. 4 . The wrapper of claim 1 , wherein the second banded layer includes, a first layer adjacent to the second base side, and a second layer adjacent to an exposed surface of the first layer; the first layer includes a first starch, a first chalk, the second anti-wrinkling agent, or any combination thereof; the second layer includes a second starch, a second chalk, the second anti-wrinkling agent, or any combination thereof; the first starch is same as or different from the second starch; and the first chalk is same as or different from the second chalk.
  5. 5 . The wrapper of claim 1 , wherein the second banded layer includes, a first layer adjacent to the second base side, a second layer adjacent to an exposed surface of the first layer, and a third layer adjacent to an exposed surface of the second layer; the first layer includes a first starch, a first chalk, the second anti-wrinkling agent, or any combination thereof; the second layer includes a second starch, a second chalk, the second anti-wrinkling agent, or any combination thereof; the third layer includes a third starch, a third chalk, the first anti-wrinkling agent, or any combination thereof; the first starch is same as or different from the second starch; the second starch is same as or different from the third starch; the third starch is same as or different from the first starch; the first chalk is same as or different from the second chalk; the second chalk is same as or different form the third chalk; and the third chalk is same as or different from the first chalk.
  6. 6 . The wrapper of claim 1 , wherein the first permeability ranges from 25 CORESTA to 100 CORESTA.
  7. 7 . The wrapper of claim 1 , wherein the anti-wrinkling agent includes glycerin, propylene glycol, 1,2-propylene glycol, or any combination thereof.
  8. 8 . The wrapper of claim 1 , wherein the first banded layer further comprises chalk, the first banded layer including 0.64 grams per square meter to 1.2 grams per square meter of the chalk.
  9. 9 . The wrapper of claim 1 , wherein the second banded layer further comprises chalk, the first banded layer including 0.64 grams per square meter to 1.2 grams per square meter of the chalk.
  10. 10 . The wrapper of claim 1 , wherein the first banded layer further comprises 1.5 grams per square meter of a starch.
  11. 11 . The wrapper of claim 1 , wherein the second banded layer further comprises 1.5 grams per square meter of a starch.
  12. 12 . The wrapper of claim 1 , wherein the first banded layer includes a first pattern, the first pattern including first repeating units in a longitudinal direction.
  13. 13 . The wrapper of claim 12 , wherein the second banded layer includes a second pattern, the second pattern including second repeating units in the longitudinal direction.
  14. 14 . The wrapper of claim 13 , wherein the second repeating units are different from the first repeating units.
  15. 15 . The wrapper of claim 1 , wherein the base includes flax, wood pulp, cellulose fiber, or any combination thereof.
  16. 16 . The wrapper of claim 1 , wherein the base has a first length and a first width, and the first banded layer has a second length and a second width, the second length of the first banded layer being perpendicular to the first length of the base.
  17. 17 . The wrapper of claim 16 , wherein the second banded layer has a third length and a third width, the third length being perpendicular to the first length.
  18. 18 . A wrapper for a smoking article, the wrapper comprising: a base having a first permeability, the base including a first base side and a second base side, the first base side parallel to the second base side; a first banded layer having a second permeability, the second permeability being less than the first permeability, the first banded layer including, a first anti-wrinkling agent adjacent to the first base side; and a second banded layer having a third permeability, the third permeability being less than the first permeability and same as or different from the second permeability, the second banded layer including, a second anti-wrinkling agent adjacent to the second base side, and the second anti-wrinkling agent being same as or different from the first anti-wrinkling agent, at least one of the first banded layer and the second banded layer further including 0.64 grams per square meter to 1.2 grams per square meter of a chalk.
  19. 19 . A wrapper for a smoking article, the wrapper comprising: a base having a first permeability, the base including a first base side and a second base side, the first base side parallel to the second base side; a first banded layer having a second permeability, the second permeability being less than the first permeability, the first banded layer including, a first anti-wrinkling agent adjacent to the first base side; and a second banded layer having a third permeability, the third permeability being less than the first permeability and same as or different from the second permeability, the second banded layer including, a second anti-wrinkling agent adjacent to the second base side, and the second anti-wrinkling agent being same as or different from the first anti-wrinkling agent, at least one of the first banded layer and the second banded layer further including 1.5 grams per square meter of a starch.

Description

CROSS-REFERENCES This application is a continuation application of U.S. patent application Ser. No. 15/995,599, filed Jun. 1, 2018, which is a divisional application of U.S. patent application Ser. No. 13/828,802, filed Mar. 14, 2013, which is a continuation application of U.S. Ser. No. 12/153,783, filed May 23, 2008, now U.S. Pat. No. 8,925,556, issued on Jan. 6, 2015, which claims priority from U.S. Provisional Patent Application 61/064,438, filed Mar. 5, 2008; U.S. Provisional Patent Application 60/935,751, filed on Aug. 29, 2007; U.S. Provisional Patent Application 60/929,452, filed Jun. 28, 2007; U.S. Provisional Patent Application 60/924,825, filed Jun. 1, 2007; U.S. Provisional Patent Application 60/924,676, filed May 25, 2007; and U.S. Provisional Patent Application 60/924,666, filed May 24, 2007; and which is a continuation-in-part of International Patent Application No. PCT/IB2007/002118, filed Apr. 2, 2007, which claims priority from U.S. Provisional Patent Application 60/787,540 filed Mar. 31, 2006, the entire contents of each identified application is hereby incorporated by reference. FIELD OF THE DISCLOSURE This disclosure relates generally to a smoking article and, more particularly, a banded wrapper for use in cigarette manufacturing, related materials, processes, and methods. Anti-wrinkling agents, specially formulated oxidized starch material, smoking articles and wrappers which exhibit a low ignition propensity and/or low self-extinguishment characteristics, and patterns for banded regions are disclosed. BACKGROUND As part of efforts to reduce the incidence of accidental fires resulting from untended smoking articles, various jurisdictions have imposed, are imposing, and may impose in the future limitations on the burning characteristics of smoking articles. One measure of the tendency of a smoking article to cause ignition of an underlying substrate is the Ignition Propensity value. To satisfy those increasingly common governmental requirements, the Ignition Propensity value, or IP value, for a smoking article should preferably be no greater than about 25%. More preferably, the IP value should be no greater than about 20%; and even more preferably no greater than about 10%. Accordingly, efforts meet such limits are undertaken by various manufacturers of smoking articles. Reduced IP values typically are associated with a tendency for the smoking article to self-extinguish during smoldering between puffs. Generally speaking, consumers do not like to re-light a cigarette during their smoking experience. A measure of the tendency for a smoking article to self-extinguish during, free burn has been developed and is known as the Self-Extinction value. The Self-Extinction or SE value has been found to be a useful indicia to evaluate the likelihood of consumer satisfaction for a smoking article where various techniques for IP reductions have been employed. The average Self-Extinction Average value for a smoking article should preferably be no greater than about 80% and/or the Self-Extinction at 0 value should be no greater than about 50%, and more preferably no greater than about 25%. Ignition Propensity (“IP”) Ignition Propensity or IP is a standard test conducted as set forth in ASTM E 2187-04, “Standard Test. Method for Measuring the Ignition Strength of Smoking articles”, which is incorporated herein in its entirety by this reference thereto. Ignition propensity measures the probability that a smoking article, when smoldering and placed on a substrate, will generate sufficient heat to maintain smoldering of the tobacco rod. Low values for IP are desirable as such values correlate with a reduced likelihood that a smoldering smoking article, when inadvertently left unattended upon a substrate, will cause combustion in the substrate. Self Extinguishment (“SE”) Self-Extinguishment or SE herein is a reference to smoldering characteristics of a smoking article under free burn conditions. To evaluate SE, a laboratory test is conducted at a temperature of 23° C.±3° C. and relative humidity of 55%±5%, both of which should be monitored by a recording hygrothermograph. Exhaust hoods) remove combustion products formed during testing. Prior to testing, smoking articles to be tested are conditioned at 55% 5% relative humidity and 23° C.±3° C. for 24 hours. Just prior to testing, the smoking articles are placed in glass beakers to assure free air access. SE testing takes place within an enclosure or test box. A single port smoking machine or an electric lighter is used to ignite the smoking articles for the test. During testing, an apparatus or “angle holder” holds the smoking articles to be tested by holding an end at angles of 0° (horizontal), 45°, and/or 90° (vertical). Preferably, twenty (20) smoking articles are tested at each of the 0°, 45°, and 90° positions. If more than one apparatus is used, the apparatuses are preferably positioned such that the smoking articles face away from each other to avoid