HK1167291A - Cigarette filter - Google Patents

Description

Cigarette filter

The present invention concerns cigarette filter devices having a filter material and a tipping film, more particularly a biodegradable tipping film with excellent physical properties, in particular not only elongation, tensile strength and shrinkage, but also flatness and bow/curl (tube/curl).

There is a need for a transparent cigarette tipping film that allows a smoker to observe the effectiveness of the filter material enclosed within the tipping film.

Certain biodegradable substrates have been considered for use as cigarette tipping films. However, because of the stringent requirements in the tobacco industry relating to tipping film chemistry and its physical properties, there is a need to provide improved forms of tipping films which are substantially free of certain specific contaminants and which have excellent properties, particularly with regard to elongation, tensile strength, shrinkage, flatness and bow/curl. In particular, the mechanical tolerances of any such film must be carefully controlled to make the film satisfactorily practical in the tobacco industry for machines used to wrap tipping paper in filter units. Because of the small size of the unit membrane, and its necessity to be tightly and neatly wound on the filtration device, it has proven challenging to develop membrane materials, particularly membrane materials of other desirable qualities that meet these criteria, such as biodegradability and transparency.

The present invention seeks to solve these problems.

According to the present invention there is provided an at least partially transparent cigarette filter tipping film comprising a biodegradable substrate and a softener in an amount of less than 25% by weight of the biodegradable substrate.

The biodegradable substrate is selected from biodegradable substrates, PLA substrates, starch-based polymers, hydroxyalkanoates and other biopolymers, but is preferably selected from cellulosic substrates.

The invention also provides a cigarette filter device comprising a filter material enclosed within a cylinder of tipping film as hereinbefore described.

Preferably, the tipping film is at least almost transparent, so that the filter material is visible through the tipping film.

Preferably, the softener is present in the tipping film in an amount of less than 24% by weight of the biodegradable substrate, more preferably less than 21% by weight, and most preferably less than 18% by weight.

The softener may be selected from any suitable material, but is preferably selected from glycerol, propane-1, 2-diol and any other suitable softener selected from the list of German Tobacco law (TVO), the contents of which are incorporated herein by reference, and the english translation of which is reproduced as appendix 1 herein, and combinations of two or more thereof.

The tipping film itself is typically cast and then wound onto a roll before being finally unwound and torn for use as cigarette tipping film. In order to allow the film to be wound onto a roll without blocking itself, the substrate preferably has an antiblock/winding aid additive. When present, the antiblock/winding aid additive is preferably provided in an amount of less than about 0.5% by weight, more preferably less than about 0.4% by weight, even more preferably less than about 0.3% by weight and most preferably less than about 0.2% by weight of the biodegradable substrate.

When present, the antiblock/winding aid may be selected from any suitable material, but is preferably selected from amorphous silica, polyethylene glycol and any other suitable antiblock/winding agent selected from the TVO list, and combinations of two or more thereof.

We have surprisingly found that by careful selection of the amount of softening agent in the tipping film, and in a preferred embodiment of the invention careful selection of the type of softening agent in the tipping film, certain problems which are exhibited in the field of conventional biodegradable substrates can be avoided. For example, certain common biodegradable substrates found to be suitable for use as tipping films are very easily extensible-a property that causes problems in the tobacco industry with the machines typically used in rolling tipping material around cigarette filter devices. It has been found that some commonly used biodegradable substrates are not sufficiently flat to exhibit unacceptable levels of curl, lack sufficient tensile strength and/or are too elastic, are susceptible to shrinkage, and/or have inadequate optical properties.

Tipping films of the invention preferably have an elongation in the machine direction of less than 15%, more preferably less than 13%, and most preferably less than 11%, when under standard test conditions referred to in the examples herein.

The tipping films of the invention have excellent properties with respect to flatness and bow/curl. Preferably, once wound, the tipping film of the invention has a flatness of less than about 4cm, preferably less than 3cm, and has a bow/curl of less than 45 °, preferably less than 0 ° (flatness is measured by placing a 6m length of cast film on a platform and pulling the film until tight-the result is recorded as flatness (cm) — center reading (cm) -edge reading (cm) — bow/curl is measured by hanging about 600mm of cast film from a suspended roll, cutting the strip axially at intervals of 100mm across the width of the roll, leaving the film for 15-20 seconds, visually observing the resulting bow and curl, and recording the result in angular form).

It is important that the tensile strength of the tipping film is also maintained in order to give the film satisfactory machinability. Preferably the tipping films of the invention have an axial tensile strength of greater than 140MPa, more preferably greater than 150MPa, and most preferably greater than 155MPa, when under standard testing conditions referred to in the examples herein.

It is important that the elasticity of the tipping film is also maintained in order to give the film satisfactory machinability. Preferably the tipping films of the invention have a young's modulus in the machine direction of greater than 4000MPa, more preferably greater than 5000MPa, and most preferably greater than 5500MPa when subjected to the standard test conditions referred to in the examples herein.

It is also important to ensure that the tipping films of the invention do not exhibit too high a shrinkage in order to give the films satisfactory machinability. Preferably the tipping films of the invention have a shrinkage in the machine and/or transverse direction of less than 5%, more preferably less than 4%, and most preferably less than 3.75% under hot conditions when subjected to standard testing conditions referred to in the examples herein.

It is important that the optical properties of the tipping film are also maintained. Preferably the tipping films of the invention have a haze of less than 2.15, more preferably less than 2.10, and most preferably less than 2.05 when subjected to standard testing conditions referred to in the examples herein. Preferably the tipping films of the invention have a gloss of greater than 98, more preferably greater than 99, and most preferably greater than 100, when under the standard test conditions referred to in the examples herein.

Examples

A28 μm regenerated cellulose film was cast from solution under standard conditions and in the presence of about 12% by weight of a glycerol softener and about 0.1% by weight of an amorphous silica antiblock agent. Any other additives and ingredients of the film are present in standard amounts and are selected from the TVO list.

Five samples of the film and a comparative sample containing about 20% by weight softener (25% by weight softener of cellulosic substrate) were subjected to physical testing to determine secant 1%, tensile strength, elongation, load and young's modulus according to BS2782-3 modified by BS 1133. The results are given in table 1 below.

TABLE 1

It can be seen that the films of examples 1 to 5 exhibit less elongation than the comparative examples, a property which facilitates the compatibility of such films with conventional industrial equipment for the preparation of cigarette tipping films.

The films were further subjected to coefficient of friction (COF) measurements according to astm d 1894. The results are shown in table 2 below.

TABLE 2

It can be seen that the films of examples 1 to 5 have acceptable COF properties compared to the comparative examples.

The films were further subjected to optical characterization as follows.

Haze was measured according to astm d 1003.

Gloss was measured according to ASTM D2457.

The results are shown in tables 3a and 3b below:

it can be seen that the films of examples 1 to 5 have improved optical properties compared to the comparative examples.

The shrink properties of the films were observed under hot conditions (at 38 ℃, 90% relative humidity) and the results are shown in table 4 below:

TABLE 4

It can be seen that the films of examples 1 to 5 have improved shrink properties under hot conditions compared to the comparative examples.

The shrink properties of the films were observed under refrigerator conditions and the results are shown in table 5:

TABLE 5

It can be seen that the films of examples 1 to 5 have improved shrink properties under refrigerator conditions compared to the comparative examples.

Regulations relating to tobacco and tobacco products (tobacco regulations)

Regulations relating to tobacco and tobacco products (tobacco regulations)

1977, 12 months and 20 days

As amended by the first revised regulations on 26/10/1982 (BGBl.I, p.1444) (BGBl.I, p.2831), 7 th part of the additive marketing regulations on 10/7/1984 (BGBl.I, p.897), 21/3/1986 (BGBI.I, p.368), 9 th part of the TabKTHmV regulations on 29/10/1991 (BGBl.I, p.2053), 8/1996 (BGBl.I, p.460), 21 st part of the regulations on the food additive regulations on 29/1/1998, and 12/8/2003 (BGBI.1, p.230), and a third revised regulations on 8/12/2003 (BGBl.I, p.2549)^*。

Items 5, 20, 3, 21, 1, items a and 2, and 19, 4, item b and 22, 2 of the food and consumer product act on 1974, 8, 15, promulgated by the ministry of food, agriculture, forestry and economics, and by approval of the federal academy of participation:

^*the european parliament at 22/1998 and the EC regulatory 98/34 obligation of the council at 22/1998 (abl.ec No. l 204, p.37), which was revised by EC regulation 98/48(abl.ec No. l 217, p.18) of the european parliament and council at 20/7 in 1998 and is related to the information regulation in the field of standards and technical regulations, have been considered.

§1

(1) The substances listed in appendix 1 are approved for the commercial manufacture of tobacco products according to the purposes listed therein. Approval of the materials listed in part B of appendix 1 lasted until 2006, 12/31.

(2) The amount of substance approved in the tobacco product must not exceed the maximum amount specified in appendix 1.

(3) The approved material must meet the purity requirements specified in appendix 1 and the specific purity requirements that are typical and available for the regulations on the sale of additives.

§2

(1) The flavors and fragrances listed in appendix 2, item 1, or the flavors and fragrances obtained from the plants or plant body structures listed in appendix 2, item 1, have not been used in the commercial manufacture of tobacco products.

(2) As a waiver for the definition of clause 1, camphor can be used to produce snuff in amounts up to a maximum of 2 grams per 100 grams of product.

(3) The use of the dechumatoceralized black beans for snuff (appendix 1, item 14, item b) remains unchanged.

§3

(1) Essential oils containing the solvents listed in appendix 1 item 1, item 2 must be identified by the expression "for tobacco product manufacture only".

(2) For chewing tobacco, black cigarettes and snuff comprising the substances listed in appendix 1 item 9, the contents of these substances must announce "with preservatives".

(3) For chewing tobacco and black cigarettes comprising the substances listed in item d of item 10 of appendix 1 and snuff comprising the substances listed in item e of item 10 of appendix 1, the contents of these substances must be declared "with colorant".

(4) For chewing tobacco containing saccharin, the level of such material must be indicated as "with saccharin sweetener".

(5) For cigars containing the substance listed in item a of item 10 of appendix 1, the content of this substance must be indicated as "colorant-faded".

(6) The statements specified in clauses 1 to 5 must be printed in a clearly visible, easily identifiable manner on the packaging, the container or other covering.

(7) No statements to the 1 st article of material allowed are required other than those in clauses 1 to 5.

§3a

(deleted)

§4

As an exception to clause 1, item 2 of clause 22, clause 2 of the food and consumer product act, cigars may state "natural colorants" or similar words of packaging material indicating natural conditions if they are neither colored nor powdered and have not received other surface treatments.

§5

The following may not be sold commercially:

1. cigars made from plug-in tobacco sheets having a tobacco content of less than 75% on a dry weight basis.

2. Cigars with a tobacco sheet content higher than 25% by weight of the product and a lower weight of the mouthpiece; cigars with artificial wrapper reduce this maximum amount by the weight of the artificial wrapper.

3. Tobacco sheet-containing tobacco shreds and cigarettes having a tobacco content of less than 75% on a dry weight basis.

4. Tobacco leaves and cigarettes, wherein the proportion of tobacco pieces is more than 25% by weight of the tobacco blend.

5. A chemically bleached tobacco product.

6. A colored cigarette tobacco.

7. Colored tobacco shreds, except for black cigarettes.

8. Cigars with artificial wrapper or wrapper consisting of tobacco sheets, provided that the statement "with artificial wrapper" is marked on the wrapper in a clearly visible, easily identifiable manner; the word "tobacco having a man-made wrapper" may be used interchangeably if the proportion of tobacco by weight in the wrapper exceeds 50%. For cigars having a wrapper consisting of tobacco sheets, the statement can be omitted if the proportion by weight of tobacco in the wrapper is at least 75% on a dry weight basis.

§5a

Tobacco products for oral, rather than smoking or chewing, use are prohibited from commercial sale.

§6

(1) According to clause 2 of clause 1 of article 52 of the food and consumer product act, anyone who does not provide the required statement or does not display in a prescribed manner a commercial sale of essential oils who violates clause 1 or 6 of clause 3 will be punished.

(2) According to clause 2, item 1 of the 52 nd article of the food and consumer product Law, penalizing the following persons will be done

1. In the commercial preparation of tobacco products intended for sale, use is made of

a) The amount of substance listed in appendix 1 exceeding the maximum permissible amount specified in clause 1, clause 2 or violating the purity requirement specified in clause 1, clause 3, or

b) Against the scent or fragrance of clause 2, clause 1.

2. The tobacco products in contravention to clause 3, clause 2 to clause 5 or 6 are sold or sold commercially without indicating or indicating the contents of the substances in a defined manner, or

3. The commercial sale or sale of tobacco products that violate the ban of clauses 5 or 5 a.

(3) The actions specified in clause 1 or 2 due to the mistake constitute the unlawful actions under clause 53 of the food and consumer product act.

7 Berlin terms

§8

(1) The regulation was in effect on 1/1978.

(2) Tobacco products complying with the legislation in the release in effect at 12/18/2003 may continue to be produced until 6/18/2004 and may be sold until stocks are sold out.

Accessory 1

§l

Part A

Approved materials

1. Generally approved as additives for the preparation of tobacco products:

essential oil meeting regulatory requirements of essential oil

Fruit, dried fruit, fruit pulp, fruit juice, concentrated fruit juice and fruit juice

Seasoning other than the plants and plant structures specified in item 2 of appendix 2

Licorice root

Radix Glycyrrhizae

Coffee

Tea and tea-like products

Cocoa and cocoa products

Alcohol

Wine and sweet dew (fortified) wine

Honey

Maple honey

Sugars prescribed under the sugar legislation and other sugar species suitable for human consumption, including caramel species

Dextrin

Syrup

Starch

Acid-treated, thin boiling starch

Oxidatively degraded starch

Phosphoric acid starch

And the above starch in the form of an expanded starch

Salt (sodium chloride)

Drinking water

The essence containing the following solvents can also be used for preparing cigarette, cigar, tobacco shred and snuff

1, 3-butanediol

(purity requirement: boiling point range 1013 mbar (760 torr): 207-.

2. Humectant:

a) for tobacco shreds, cigars, cigarettes, tobacco sheets and artificial packaging materials:

propylene glycol (E422)

Hydrogenated glucose syrup

(purity requirement: clear, colorless syrup solution containing hydrogenated sugar derived from glucose syrup and suitable for human use; minimum D-sorbose content: 5%, based on dry weight)

1, 3-butanediol

(purity requirement: see item 1)

1, 2-propanediol

Triethylene glycol

(purity requirement: specific gravity 20/20 ℃ C.: 1.124-1.126; boiling point range at 1013 mbar (760 torr): 280-290 ℃ C.; refractive index n (20, D): 1.4550-1.4560; ash content: less than 0.01% by weight; monoethylene glycol content: less than 0.1% by weight)

Orthophosphoric acid (E338)

Glycerol phosphate and its sodium, potassium and magnesium compounds

Up to a maximum total amount of 5%, based on dry weight

b) For chewing tobacco:

glycerol (E422) up to 10%, based on dry weight of product

Hydrogenated glucose syrup (purity requirement: see item a)

c) For snuff

Hydrogenated glucose syrup (purity requirement: see item a)

Maximum amount of liquid paraffin up to 25%, based on dry weight of product

Glycerol (E422) up to 10%, based on dry weight of product

1, 2-propanediol

1, 3-butanediol (purity requirement: see item 1)

3. Glues, adhesives and thickeners

a) For cigars, tobacco bundles including black cigarettes, tobacco sheets and artificial wrappers, as well as glue for joints, filter device covers, mouthpieces for cigarettes and filter device (mouthpiece) coatings

Gel

Insect paint

Collodion

Cellulose acetate

Ethyl cellulose, and hydroxyethylated ethyl cellulose

Methylcellulose (E461), and hydroxyethylated or carboxymethylated methylcellulose

Carboxymethyl cellulose and its sodium (E466), potassium, calcium and magnesium compounds, and methylated compounds

Carboxymethyl starch, dialdehyde starch with etherification degree up to 0.5 prepared from oxidized corn starch with aldehyde content of at least 90%

Arabic gum (E414)

Agar (E406)

Alginic acid (E400)

Sodium alginate (E401)

Potassium alginate (E402)

Calcium alginate (E404)

Astragalus membranaceus gum (E413)

Sophora bean powder (E410)

Guar seed powder (guar gum) (E412)

A mixture of:

aa) aqueous dispersions of polyvinyl acetate and of partially hydrolyzed polyvinyl acetate or of vinyl acetate with a chain length C₁₈Copolymers of vinyl esters of long-chain aliphatic, saturated carboxylic acids or with ethylene, and

bb) an aqueous solution of polyvinyl alcohol;

to these mixtures glycerol acetate may be added.

b) For tobacco sheets:

a maximum of 2% glyoxal, based on dry weight of the product, or

A maximum of 2% melamine formaldehyde resin based on dry product weight

c) For tobacco shreds:

agar (E406)

Arabic gum (E414)

d) For chewing tobacco: a maximum of 2% gum arabic (E414) based on dry weight of the product

4. Whitening agent and combustion controlling agent

Aluminum hydroxide

Aluminium sulphate

Alumina oxide

Magnesium oxide

Talc

Titanium dioxide (E171)

Sodium, potassium, calcium and magnesium compounds of carbonic acid, formic acid, acetic acid, malic acid, citric acid, tartaric acid, lactic acid and nitric acid.

5. Substance for artificial wrapper and cigarette paper

Cellulose containing the substances listed in item 3, item a and item 4.

6. Substances for filtering cigarettes, mouthpieces, cigars, cigar tips and pipes

Activated carbon

(purity requirement: there is no increase in the fluorescence of the solvent after two hours of extraction in a Soxhlet apparatus with optically pure cyclohexane or benzene)

Alumina oxide

Cellulose acetate

Glycerol acetate as a cellulose acetate binder

Silica gel

Magnesium silicate hydrate (sepiolite)

Polyethylene

Titanium dioxide up to 2% by weight of the filter device (E1171)

Triethylene glycol diacetate

(purity requirement: specific gravity 20/20 ℃ C.: 1.110-1.130; boiling point range of 5 to 95mL of the main fraction of 100mL sample at 1013 mbar (760 torr): 288-

A mixture of:

a) aqueous dispersions of polyvinyl acetate, and of partially hydrolyzed polyvinyl acetate, or of vinyl acetate with a chain length C₁₈Copolymers of vinyl esters of long-chain aliphatic saturated carboxylic acids or with ethylene, and

b) an aqueous solution of polyvinyl alcohol;

as glue for gluing the mouthpiece and the filter (mouthpiece) cover. Glycerol acetate may be added to these mixtures.

Citric acid ethyl ester in cigarette filter

(purity requirement: transparent, colorless, viscous liquid, odorless [ no acid content of 20.2. + -. 0.6mL corresponding to 0.2 NKOH/g; total weight metal content less than 10 ppm; arsenic less than 3ppm ])

7. Substances for filter device wrappers, mouthpieces and filter device (mouthpiece) covers:

paper, paperboard, cellulose

Softwood and straw

(purity requirement: must be free of contaminants, in particular of Salmonella)

Aluminum (E173)

Aluminum foil and aluminum foil with protective paint

(purity requirements: considering their composition, the lacquered layers have to be dried in a manner free of volatile fractions, in particular free of solvents, and transferred to the mouthpiece 1dm after application of a suitable carrier material²Must not release more than during extraction with distilled water at 40 ℃ within 10 days

a)5.0mg of soluble substance

b)1.0mg of phenolic substance

c)0.3mg of formaldehyde

d)1.0mg of Zinc ion

e)1.0mg organically bound nitrogen; no aromatic amine could be detected. )

8. Thermocapacitive substance for bonding of filter device wrapper, mouthpiece and filter device (mouthpiece) cover:

a) ethylene and chain length C₂-C₁₈Copolymers of vinyl esters of aliphatic saturated monocarboxylic acids.

(purity requirement: melt index must not exceed 500 according to DIN 53735)

b) Hydrogenated polycyclopentadiene resin

(purity requirement: viscosity must be at least 2,000cps at 140 ℃)

c) Microcrystalline wax

d) Paraffin wax for annex 2 of additive sales regulation

e) Mixed styrene polymers and graft polymers from styrene, alpha-methylstyrene, and vinyltoluene.

(purity required: 3dm of 10g weight was taken out from the product²Plates, when heated to 90 ℃ within 24 hours, releasing not more than 15mg/dm²Volatile organic substances. )

f) Polyisobutenes

g) Glycerol and pentaerythritol esters of rosin acids and hydrogenated products thereof

h)2, 6-di-tert-butyl-4-methylphenol

(purity requirement: in the preparation of hot melts of the substances listed under items a to e, it is possible to add not more than 0.5% of such substances as antioxidants.)

The substances listed under items a to g may comprise only technically unavoidable residues of monomeric starting materials and any technically unavoidable added extraction preparation aids.

9. Preservatives not used for cigars or cigarettes, except for cigarette seam glue and tobacco sheet:

up to 2 grams sorbic acid (E200), sodium sorbate, potassium sorbate (E202) and calcium sorbate (E203) per kilogram product on a dry weight basis

Up to 5 g of benzoic acid (E210) and sodium benzoate (E211) per kg of product, calculated as benzoic acid on a dry weight basis

Up to 5 g of ethyl (E214) and propyl (E216) p-hydroxybenzoate and their sodium compounds (E215 and E217) per kg of product, calculated as benzoic acid, on a dry weight basis

For tobacco sheets, also on a dry weight basis, up to 0.6 g of thiabendazole (E233) per kg of product.

If these preservatives are used in admixture with each other, the indicated maximum amount of each substance should be reduced by a percentage equivalent to the cumulative maximum amount of the other substances contained in the mixture.

10. Coloring agent

a) For cigarette paper and wrapping for cigars, tobacco sheets and artificial wrapping:

humic acid and its alkali salt

(purity requirement: these substances must not contain extractable polycyclic aromatic hydrocarbons with three or more rings)

Rhamnus alnoides extract prepared by extracting Rhamnus alnoides with water

Lignum sappan extract prepared by extracting lignum sappan with water

Sophora japonica extract prepared by extracting Sophora japonica (dyed mulberry) with water

Medicinal charcoal plant [ plant medicinal carbon ] (E153)

Bright black BN (E151)

Cochineal red A' (E124)

Fast red F

Sunset yellow S (E110)

Orange GGN

Indigo I (E132)

Amaranth (E123)

Tartrazine (E102)

And aluminum, calcium and magnesium compounds thereof (also known as lakes).

b) Filter wrapper, mouthpiece and filter (mouthpiece) cover for cigars and cigarettes

Substances listed under item a and gold foil (E175)

Gold bronze (copper zinc alloy with 15% of maximum zinc content)

Silver bronze (aluminum E173)

Calcium carbonate (E170)

Calcium sulfate

Titanium dioxide (E171), also mixed with mica, wherein the mica content must not exceed 75%, and the colorant mixture must be encapsulated with a lacquer binder.

Iron oxide and hydroxide (yellow, red, brown, black) (E172)

Alpha- (3-nitro-5-sulfo-6-hydroxyphenylazo) -acetoacetanilide, 1: 1 chromium complexes, amine salts and 4- (3-nitro-5-sulfo-6-hydroxyphenylazo) -1-phenyl-3-methylpyrazolinone-5, 1: 1 chromium complexes, amine salts, protective lacquers for aluminum foils, up to a total of 150mg/m²

Coconut shell powder

(purity requirement: must be free of impurities, in particular of Salmonella)

c) For gums, binders and thickeners for cigars and cut tobacco:

caramel

d) For chewing tobacco and black cigarettes:

iron (III) sulfate (ferric sulfate)

([ German ] purity requirement stipulated in pharmacopoeia)

Tannic acid

e) For snuff:

iron (III) sulfate (ferric sulfate)

([ German ] purity requirement stipulated in pharmacopoeia)

Tannic acid

Iron oxide, red (E172)

Medicinal charcoal plant [ plant medicine carbon ] (E153)

Indigo I (E132)

11. Plasticizers for inks and coatings printed on cigarette paper, cigarette filters, filter papers (filter papers), mouthpieces and filter (mouthpiece) mouths:

acetic acid glyceride

12. Binders for inks and coatings for printing filter forming paper, cigarette mouthpiece and filter (mouthpiece) mouth:

item 3 listed under item a.

13. Substances for printing on cigarette paper and mouthpiece and filter (mouthpiece) tipping paper:

a) colorants listed in the Additive approval regulations

b) Other substances listed in items a and b of item 10 above and items 11 and 12 above

c) Basic chrysanthemum orange S

Fast yellow

Litmus petiolus

Scarlet GN

Lost red 6R

Anthraquinone blue

Black 7984

d) Magnesium carbonate

Alumina oxide

Unsaturated drying oils, i.e. linseed oil and wood oil, and boiled oils prepared from them by heating.

Paraffins, fluids and adhesives

Odour-inhibiting mineral oil up to 25% by volume in the printing ink to be used

(purity requirement: boiling point range: 200 ℃ C. and 350 ℃ C. at 1013 mbar [760 torr ], all aromas and fragrances were removed.)

Hydrogenated rosin (rosin) ester and C₃-C₆Trihydroxy or polyhydroxy alcohols of

Phenol-formaldehyde-modified rosin (rosin)

Xylene-formaldehyde-modified rosin (rosin)

Acrylic acid-modified and/or maleic acid-modified rosin (rosin) and its use with C₃-C₆Esters of trihydroxy or polyhydroxy alcohols

Alkyd resins (polyesters from polyols and phthalic acids), and fatty acid modified alkyd resins; fatty acid chain length of C or more₆

Purification of mono-and polyvalent condensation products and etherified condensation products, optionally alkylated phenols with formaldehyde

Xylene-formaldehyde resins and condensation products thereof with phenols or alkylated phenols

Fatty acid-modified phenol-formaldehyde resins with fatty acid chain lengths higher than C₆

A desiccant according to German industry Standard [ DIN ] 55901; salts and oxides of cobalt, manganese, iron, calcium, zirconium and cerium with naphthenic acids, C9-C11 saturated primary and tertiary monocarboxylic acids and 2-ethylhexanoic (caproic) acid

The dried paint film may contain up to 0.2% cobalt or up to 0.5% of other driers (each based on metal).

14. Other additives

a) For chewing tobacco:

ammonium chloride

Aluminium potassium sulfate

Calcium chloride

Potassium tartrate (tartaric acid)

Saccharin

b) For snuff

Yeast

Edible fats and oils

Coumarin-removed black beans; the coumarin content of snuff is at most 0.003%

Ammonium carbamate (antler refined salt)

Sodium carbonate:

potassium carbonate

Calcium carbonate (E170)

Ammonium chloride

Ammonium hydroxide

Calcium chloride

Calcium hydroxide

Potassium tartrate (tartaric acid)

1, 3-butanediol

(purity requirement is as described in item 1)

c) For white snuff powder:

ammonium carbamate (antler refined salt)

Sodium carbonate

Calcium carbonate (E170)

Ammonium chloride

Calcium chloride

Part B

Substances for provisional approval

1. Glue, adhesive and thickener for cigars, cigarette bundles, including black cigarettes, tobacco sheets and artificial packaging materials, and glue for seams, filter covers, mouthpieces and filter device (mouthpiece) coatings for cigarettes

a) Hydroxypropyl starch (E1440)

b) Acetylated distarch adipic acid (E1422)

2. Plasticizers for inks and coatings used for printing on cigarette paper, cigarette filters, filter forming paper, cigarette holders and filter (mouthpiece) mouths:

a) up to 10% of product acetyl tributyl citrate

b) Sucrose acetate isobutyrate up to 10% of the product

Accessories 2 to 12 clause 1

Prohibited flavors and fragrances

1. Armillaridic acid (mycolic acid, Acidum agaricium)

Birch tar oil (Birch tar oil)

Bitter almond oil containing free or bonded hydrocyanic acid

Sassafras oil (sassafras oil)

Juniper oil (juniper tar)

Camphor oil

Camphor

Coumarin compound

Sassafras oil extract

Arborvitae ketone

2. Scents and flavors made from:

stems of Sichuan sheep spring (stipites Dulcamaraceae)

Camphorwood (lignum Camphorae)

Rhizome of Fossilia Spinosa (rhizoma Polypodii, rhizoma Filicis dulcis)

Mint (herba Pulegii)

Bitter wood (bitter wood )

Bark of Quillaja Saponaria (bark of Quillaja Saponaria, Quillaja Saponaria)

Everfew (herba Tanaceti, Chinese caterpillar fungus)

Rue (Rue) (herb of Rue)

Sassafras (sassafras wood)

Sassafras leaf (folia Sassafras)

Sassafras bark (sassafras bark)

Melilotus officinalis (sweet clover)

Black bean (semen Toncae)

Vanilla plant (De tongue) (Xiangshe penju)

Clover (clover)

Claims (19)

1. A cigarette filter tipping film comprising a biodegradable substrate and a softener in an amount of less than 25% by weight of the biodegradable substrate, the tipping film being at least partially transparent.

2. A cigarette filter tipping film according to claim 1 which has an axial elongation of less than 15%.

3. A cigarette filter tipping film according to claim 1 or claim 2 which has an axial tensile strength of greater than 140 MPa.

4. A cigarette filter tipping film according to any one of claims 1 to 3 having a young's modulus in the machine direction of greater than 4000 MPa.

5. A cigarette filter tipping film according to any one of claims 1 to 4 which has a shrinkage under hot conditions in the machine and/or transverse directions of less than 5%.

6. A cigarette filter tipping film according to any one of claims 1 to 5 having a haze of less than 2.15.

7. A cigarette filter tipping film according to any one of claims 1 to 6 having a gloss of greater than 98.

8. A cigarette filter tipping film comprising a biodegradable substrate and a softener in an amount of less than 25% by weight of the biodegradable substrate, the tipping film having:

a. the axial elongation is less than 15 percent;

b. the axial tensile strength is more than 140 MPa;

c. the axial Young's modulus is more than 4000MPa

d. The axial and/or transverse shrinkage under hot conditions is less than 5%;

e. haze less than 2.15; and/or

f. The glossiness is more than 98.

9. A cigarette filter tipping film according to claim 8 which is at least partially transparent.

10. A cigarette filter tipping film according to any one of claims 1 to 9 wherein the biodegradable substrate is selected from cellulosic substrates, PLA substrates, starch-based polymers, hydroxyalkanoates and other biopolymers.

11. A cigarette filter tipping film according to claim 10 wherein the biodegradable substrate is a cellulosic substrate.

12. A cigarette filter tipping film according to any one of claims 1 to 11 wherein the softening agent is present in the tipping film at less than 24% by weight of the biodegradable substrate.

13. A cigarette filter tipping film according to any one of claims 1 to 12 wherein the softener is selected from glycerol, propane-1, 2-diol, softeners mentioned in the TVO list, and combinations of two or more thereof.

14. A cigarette filter tipping film according to any one of claims 1 to 13 which includes an anti-blocking/wrapping aid additive.

15. A cigarette filter tipping film according to claim 14 wherein the anti-blocking/wrapping aid additive is provided in less than about 0.5% by weight of the biodegradable substrate.

16. A cigarette filter tipping film according to claim 14 or 15 wherein the anti-adhesion/enwrapping aid is selected from amorphous silica, polyethylene glycol, an anti-adhesion/enwrapping aid mentioned in the TVO list, and combinations of two or more thereof.

17. A cigarette filter device comprising filter material enclosed in a cylinder of tipping film according to any one of claims 1 to 16.

18. A cigarette comprising smokable material and the filter device of claim 17.

19. A cigarette filter plug material comprising a mechanically treated tipping film according to any one of claims 1 to 16.