The present invention relates to a biodegradable paper sheet for filter element comprising refined cellulose fibers and hydrophobic fibers.

A molding apparatus, a cigarette filter rod and a preparation method thereof are disclosed. The molding apparatus comprises a single-screw extrusion system and a cooling setting system. The single-screw extrusion system comprises a feeder and an extruder. The feeder is arranged on the extruder. The extruder comprises a cylinder. A heater is arranged outside the cylinder. A screw is arranged inside the cylinder, and a mouth mold is arranged at one end of the cylinder. The cooling setting system comprises a round tube and a cooler. The cooler (6) is arranged outside the round tube. One end of the round tube is butted with the mouth mold of the extruder; and multiple groups of grooves are formed on threads of the head of the screw.

An object of the present invention is to provide a cellulose acetate composition with excellent biodegradability and water solubility, and excellent thermoformability. A cellulose acetate composition comprising: a cellulose acetate having a degree of acetyl substitution of 0.4 or greater and less than 1.4; and a citrate ester-based plasticizer, wherein a content of the citrate ester-based plasticizer is 3 parts by weight or greater per 100 parts by weight of the total amount of the cellulose acetate and the citrate ester-based plasticizer.

A universal filtering mouthpiece for smoking devices comprising a flexible and substantially conical shaped body having a small diameter end and a large diameter end; a hollow smoke passage which runs axially through the conical shaped body from the small diameter end to the large diameter end; a filter cartridge housing centered axially at the mouthpiece end of the said flexible and substantially conical shaped body which communicates with the hollow smoke passage and capable of housing a removable filter; and a disposable, high-airflow filter cartridge consisting of a rigid cylindrical frame having rounded edges, the rigid cylindrical frame housing a smoke filter inside the inner diameter of said rigid cylindrical frame. The universal filtering mouthpiece for smoking devices is readily implementable across a wide variety of smoking devices such as, but not limited to, pipes, bongs, hookahs, water pipes, electronic cigarettes, cigarettes, and pre-roll cigarettes.

The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

An aerosol generating article (10) comprises: an aerosol generating substrate (12); a filter (14) in axial alignment with the aerosol generating substrate, the filter (14) comprising at least one water dispersible filter component (16), wherein the filter component is water dispersible under the test conditions of EN 14987:2006; and a tipping wrapper (20) wrapped around the filter (14) and at least a portion of the aerosol generating substrate (12). The tipping wrapper (20) comprises: a first weakening line (22) extending around at least a portion of the tipping wrapper (20); a removable tipping wrapper portion (26) extending downstream from the at least one weakening line (22) and at least partially overlying the water dispersible filter component (16); and an upstream tipping wrapper portion (24) extending upstream from the first weakening line (22), wherein the upstream tipping wrapper portion (24) is attached to a downstream portion of the aerosol generating substrate (12) and an upstream portion of the filter (14).

An aerosol generating device includes a rod of aerosol generating material and a filter rod, and tipping paper. The filter rod includes a first filter portion and a second filter portion. The first filter portion includes acetate tow and is positioned at a mouth end of the aerosol generating device. The second filter portion is biodegradable and extends from the first filter portion to the rod of aerosol generating material. The tipping paper surrounds the filter rod and a part of the rod of aerosol generating material. The second filter portion encloses a volume which is more than 50% of a combined volume enclosed by the first and second filter portions. The tipping paper includes a line of weakening extending from the mouth end towards the rod of aerosol generating material so that at least a portion of the tipping paper can be opened, and preferably removed, by a user.

A process for producing a filter element suitable for use in smoking articles may include: embedding a bundle of cellulose acetate fibers with an aqueous suspension of polyhydroxyalkanoate (PHA) to obtain a wet bundle of the cellulose acetate fibers covered by the aqueous suspension of the PHA; shaping the wet bundle in a form of a continuous elongated element; heating the continuous elongated element to temperature greater than or equal to 140° C. and less than or equal to 180° C. for time sufficient to melt the PHA and to evaporate water from the continuous elongated element; cooling the heated continuous elongated element to obtain crystallization of the PHA; and cutting the so-obtained continuous elongated element into segments of predetermined length.

A filter (10) for cigarettes having a wax tubular member (20) with at least one through opening (30) to allow the smoke to pass through. A second detachable tubular member (125) can be optionally added. Through opening (30) may have different shapes that determine how much the smoke temperature is reduced. Member (20) can be selectively depressed to further constrain the passage of smoke to reduce the smoke temperature and trap more gunk. The present was filter is biodegradable and may be used as a carrier for seeds that may bloom when the filter is discarded.