Polypropylene tow for removing harmful substance from cigarette smoke

Abstract

A polypropylene tow for removing harmful matter from cigarette smoke contains adsorbent (4-8.5%) and polypropylene (91.5-96%). Said adsorbent contains zeolite molecular sieve with low Si / Al ratio of 2.5-10 and the molecualr sieve with high Si / Al ratio of 40-200. Said polypropylene tow can be made into tip filter of cigarette.

Description

technical field

[0001] The invention provides a polypropylene tow that can effectively remove main harmful substances in cigarette smoke, and specifically prepares a polypropylene tow with a special adsorbent added. Background technique

[0002] For a long time, in order to reduce or eliminate the harmful substances in cigarette smoke, such as tar, nicotine, etc., people have conducted many studies and adopted various measures and methods. The simplest and widely used technology is Add a kind of filter tip that acetate fiber, polypropylene fiber are prepared on cigarette, but because this method still can't get rid of harmful substance in cigarette smoke effectively, therefore, propose the technology of improving cigarette filter tip performance constantly again. Such as adding adsorbents such as one deck activated carbon and molecular sieves before the filter tip to prepare composite filter tip technology (CN94112700.1). However, although existing technologies can effectiv...

Examples

Embodiment 1～6

[0007] The preparation of embodiment 1~6 additional adsorbent

[0008] The low-silicon-aluminum-ratio zeolite and high-silicon-aluminum ratio molecular sieve are mixed according to a certain weight ratio, and then ground into a fine powder larger than 300 meshes. The specific compositions of adsorbents 1, 2, 3, 4, 5, and 6 are shown in Table 1.

[0009] adsorption

Embodiment 7～16

[0010] The preparation of embodiment 7~16 additional adsorbent polypropylene tow

[0011] The molecular sieve adsorbent prepared by the methods of Examples 1 to 6 was mixed with polypropylene powder or granules for commercially available cigarette filter rods in different proportions, and then fully miscible, followed by wire drawing, to prepare Example 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 polypropylene tow.

[0012] sample

Embodiment 17

[0013] The performance of the polypropylene fiber tow of embodiment 17 additional adsorbents

[0014] The tows of Examples 7-16 are drawn to make a polypropylene fiber filter rod containing an adsorbent, and the filter rod is used to make a cigarette filter.

[0015] Using the cigarettes made of the above filters, the conventional methods for analyzing various components of cigarette smoke were used to analyze the components of cigarette smoke passing through the additive polypropylene fiber filter, and the results are listed in Table 3.

[0016]

sample

dry tar

(mg)

Nicotine

(mg)

Permeability of harmful substances

Addition amount of adsorbent

(mg / mouthpiece)

Acetaldehyde

acrolein

benzene

toluene

Example 7

15.6

1.00

0.90

0.98

0.97

0.90

0.9

Example 8

14.7

1.00

0.82

0.96

0.93

0.82

1.8

Example 9

...

technical field

[0001] The invention provides a polypropylene tow that can effectively remove main harmful substances in cigarette smoke, and specifically prepares a polypropylene tow with a special adsorbent added. Background technique

[0002] For a long time, in order to reduce or eliminate the harmful substances in cigarette smoke, such as tar, nicotine, etc., people have conducted many studies and adopted various measures and methods. The simplest and widely used technology is Add a kind of filter tip that acetate fiber, polypropylene fiber are prepared on cigarette, but because this method still can't get rid of harmful substance in cigarette smoke effectively, therefore, propose the technology of improving cigarette filter tip performance constantly again. Such as adding adsorbents such as one deck activated carbon and molecular sieves before the filter tip to prepare composite filter tip technology (CN94112700.1). However, although existing technologies can effectiv...

Examples

Embodiment 1～6

[0007] The preparation of embodiment 1~6 additional adsorbent

[0008] The low-silicon-aluminum-ratio zeolite and high-silicon-aluminum ratio molecular sieve are mixed according to a certain weight ratio, and then ground into a fine powder larger than 300 meshes. The specific compositions of adsorbents 1, 2, 3, 4, 5, and 6 are shown in Table 1.

[0009] adsorption

Embodiment 7～16

[0010] The preparation of embodiment 7~16 additional adsorbent polypropylene tow

[0011] The molecular sieve adsorbent prepared by the methods of Examples 1 to 6 was mixed with polypropylene powder or granules for commercially available cigarette filter rods in different proportions, and then fully miscible, followed by wire drawing, to prepare Example 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 polypropylene tow.

[0012] sample

Embodiment 17

[0013] The performance of the polypropylene fiber tow of embodiment 17 additional adsorbents

[0014] The tows of Examples 7-16 are drawn to make a polypropylene fiber filter rod containing an adsorbent, and the filter rod is used to make a cigarette filter.

[0015] Using the cigarettes made of the above filters, the conventional methods for analyzing various components of cigarette smoke were used to analyze the components of cigarette smoke passing through the additive polypropylene fiber filter, and the results are listed in Table 3.

[0016]

sample

dry tar

(mg)

Nicotine

(mg)

Permeability of harmful substances

Addition amount of adsorbent

(mg / mouthpiece)

Acetaldehyde

acrolein

benzene

toluene

Example 7

15.6

1.00

0.90

0.98

0.97

0.90

0.9

Example 8

14.7

1.00

0.82

0.96

0.93

0.82

1.8

Example 9

...