JP6000366B2 - Cigarette filter including PLA interleaf and cigarette including the same - Google Patents

Description

  A cigarette filter including PLA (polylactic acid) slip paper and a cigarette including the same are provided.

  In general, in order to produce a cigarette, first, various types of leaf tobacco are blended and processed so as to have a desired scent and taste. Next, the processed leaf tobacco is chopped to prepare tobacco, and cigarette paper is wrapped around the tobacco to produce a cigarette without a filter. Then, if necessary, a filter is attached to a cigarette without a filter.

  Cigarette paper can be made of hemp (flax), wood pulp, etc., and is required to maintain flammability and cigarette taste when burned. The cigarette filter can include activated carbon, flavoring substances, etc., and can consist of a monofilter or multiple filters, and is surrounded by a cigarette filter wrapping paper. A cigarette filler and a cigarette filter are connected by a tipping paper, and the tip paper may include fine holes.

  Cigarette filters that contain vacant spaces include recess cigarette filters and tube cigarette filters. The vacant space contained in the cigarette filter wets the mouth of the cigarette filter with lips and saliva. It can reduce that the function of a filter falls. The space portion of the cigarette filter may be collapsed during smoking due to the smoking habits of consumers. In order to maintain the shape of the space part, the thickness of the cigarette filter including the empty space is increased in thickness to improve the strength, or the filter paper is coated with a sizing agent to reduce moisture penetration. be able to. However, increasing the thickness of the wrapping paper may reduce the workability of cigarette filter manufacturing, and application of a sizing agent may increase environmental pollution.

  One embodiment of the present invention is for improving the strength of a cigarette filter including space and reducing moisture penetration.

  One embodiment of the present invention is for maintaining the workability of manufacturing a cigarette filter and reducing environmental pollution.

  One embodiment of the present invention can be used to achieve other problems not specifically mentioned in addition to the above problems.

  A cigarette filter according to an embodiment of the present invention surrounds a sub-filter part surrounded by filter paper, a space part including a space vacated on the sub-filter part side, the sub-filter part and the space part. PLA (polylactic acid) slip sheet.

  The PLA interleaf may include an inner paper layer, an outer paper layer, and an intermediate layer that includes PLA and is located between the inner paper layer and the outer paper layer.

  The intermediate layer may include PLA and one or more polymer materials.

  A cigarette according to an embodiment of the present invention includes a cigarette filler, and includes a cigarette filler part surrounded by cigarette paper, and a cigarette filter part connected to the cigarette filler part, and the cigarette filter part is A sub-filter portion surrounded by filter paper, a space portion including a space opened on the side of the sub-filter portion, and a PLA slip paper surrounding the sub-filter portion and the space portion.

  The cigarette filter unit may be a monofilter.

  The cigarette filter unit includes a first sub-filter unit surrounded by a first filter wrapping paper and a second sub-filter unit surrounded by a second filter wrapping paper, and the first sub-filter unit and the space unit The second sub-filter unit may be positioned between the two.

  The PLA interleaving paper may surround the second sub-filter part and the space part.

  The PLA interleaving paper may surround the first sub-filter part, the second sub-filter part, and the space part.

  One embodiment of the present invention can improve the strength of a cigarette filter including space, reduce moisture penetration, maintain workability of cigarette filter manufacture, and reduce environmental pollution Can be made.

1 is a perspective view schematically showing a cigarette according to an embodiment of the present invention. It is sectional drawing which shows schematically the cigarette which concerns on one Embodiment of this invention. It is sectional drawing which shows schematically the PLA interleaving paper concerning one Embodiment of this invention. It is sectional drawing which shows schematically the cigarette which concerns on one Embodiment of this invention. It is sectional drawing which shows schematically the cigarette which concerns on one Embodiment of this invention.

  Various embodiments, shown as several embodiments, will be described more fully with reference to the accompanying drawings. However, it should not be understood that it is at least one embodiment of many different forms and is limited to the embodiment described in detail herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the implementation of at least one example to those skilled in the art. In the drawings, the size of layers and the relative size and region of layers are exaggerated for clarity. When one element or layer is “on top”, “connected” or combined ”with another element or layer, it is directly on top of another element or layer, or between It is understood that the case where other elements and layers are interposed is also included. In contrast, when one element is “directly on top”, “directly connected”, or “directly combined” with another element or layer, the other There are no elements or layers. Similar numbers apply to similar elements. The term “and / or” as used herein includes one or more combinations of the associated listed items. Here, the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, sections, but are not limited by these terms. . These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Accordingly, a first element, component, region, layer, or section may be referred to as a second element, component, region, layer, or section without departing from what is shown in the examples. The terms related to space, such as “below”, “below”, “lower”, “above”, “upper”, etc., refer to one element or configuration and another element or configuration as shown in the drawings. Is used to explain the relationship. It is understood that spatially related terms are intended to include different directions of the device used or operated in addition to the directions depicted in the drawings. For example, if the device in the figure is turned over, an element described as another element or configuration such as “below” or “below” becomes another element or configuration located “above” . Thus, the “below” illustration can include both up and down directions. The device is oriented in another direction (90 degrees or rotated in another direction) and is used to describe as a spatially related description. The terminology used herein is for the purpose of describing particular specific examples only and is not intended to be limiting of specific examples. As used herein, the singular forms “a”, “an”, and “the” indicate that the plural includes plural forms, except where clearly intended in the other direction. As used herein, “comprises” and / or “comprising” explicitly includes the state of a feature, integer, step, operation, element, and / or component, but one or more other features, integer, step Does not exclude the presence or addition of operations, elements, components, and / or groups thereof. As a specific example, here the cross-sectional view is a schematic (and intermediate structure) of an ideal specific example. Such a situation can be variously predicted from the shape of the illustration as a result, for example, the production technique and / or the type of tolerance. Accordingly, the specific examples should not be construed as limited to the partial shapes in the range depicted individually but include, for example, deviations in shape as a result of production. For example, a buried region, usually described as a rectangle, has a generally circular or curved feature and / or slope of the buried population, rather than a binary value whose edges vary from buried to non-buried region. It has become. Similarly, a buried region formed by embedding results in some embedding in the region between the buried region and its surface. Accordingly, the areas described in the drawings are only an overview in nature, and their shapes are not intended to illustrate the true appearance of the area of the device and are not intended to limit the scope of the examples. Unless defined otherwise, all terms (technical and scientific terms) herein have the same meaning as commonly understood by one of ordinary skill in the art to which an embodiment belongs. As defined in a commonly used dictionary, it is interpreted consistently as meaning within the context of the related art, and is not ideally interpreted or overly formal without being clearly defined Terminology is understood so that it does not make sense.

  Hereinafter, cigarette filters and cigarettes according to embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3.

  1 is a perspective view schematically showing a cigarette according to an embodiment of the present invention, FIG. 2 is a cross-sectional view schematically showing a cigarette according to an embodiment of the present invention, and FIG. It is sectional drawing which shows schematically the PLA interleaving paper concerning one Embodiment of this invention.

  Referring to FIGS. 1 and 2, a cigarette 1 includes a cigarette filler portion 10 that burns by fire, and a cigarette filter portion 20 that filters cigarette smoke. . The cigarette filler part 10 and the cigarette filter part 20 may be connected by a chip paper (tipping paper) 29. The cigarette filler portion 10 includes a cigarette filler 11 and is surrounded by cigarette paper 19.

The cigarette filter unit 20 includes a sub filter unit 21 and a space portion 24. The sub-filter part 21 can contain fibrous or filamentous acetate tow. The space part 24 is a vacant space, and can reduce the deterioration of the function of the filter due to the mouth of the cigarette filter being wetted by lips, saliva and the like. In addition, the cigarette filter unit 20 can include a flavor substance and can include an adsorbent. The cigarette filter unit 20 is a monofilter including a sub-filter unit 21. In addition, the cigarette filter unit 20 may be a multiple filter including a plurality of sub-filter units. For example, a double filter as shown in FIG. 4 or 5 may be used, and a triple filter, a quadruple filter, or the like may be used. In addition, the length of each sub-filter unit included in the multiple filter can be adjusted appropriately.

  The cigarette filter unit 20 is surrounded by one or more wrapping papers, and the porosity of these wrapping papers can be variously adjusted according to the type of cigarette. The sub filter unit 21 is surrounded by a cigarette filter wrapping paper 28. The sub-filter part 21 and the space part 24 are surrounded by a PLA interlacing paper (polyacid laminated paper) 25. PLA is a material excellent in strength, moisture proof and biodegradable. Due to the inherent characteristics of the PLA itself, the strength of the PLA slip sheet 25 is improved, the water penetration into the PLA slip sheet 25 is reduced, and the biodegradability of the PLA slip sheet 25 is improved. Eventually, distortion or collapse of the space 24 surrounded by the PLA interleaf 25 can be prevented.

  Referring to FIG. 3, the PLA slip sheet 25 may include an inner paper layer 258, an outer paper layer 259, and an intermediate layer 251 positioned between the inner paper layer 258 and the outer paper layer 259. . The intermediate layer 251 includes PLA. Although the thermal stability of the PLA is weak, the inner paper layer 258 and the outer paper layer 259 are located on both sides of the intermediate layer 251 containing PLA, so that the thermal stability of the PLA paper 25 is improved and the PLA is improved. The strength of the slip sheet 25 can be improved.

  The PLA interleaf 25 can be manufactured by extrusion of a T-die method. For example, an inner paper and an outer paper are supplied from both sides, and a polymer material containing PLA is extruded between the inner paper and the outer paper through a T-die, whereby an inner paper layer 258 and an intermediate layer 251 containing PLA. Then, a PLA slip sheet 25 including the outer paper layer 259 can be manufactured.

  Corona treatment can be applied to the inner paper and the outer paper, thereby enhancing the adhesive strength between the paper and the intermediate layer 251. As a result, when the PLA interleaf 25 is used for filter manufacture, PLA The interlayer separation phenomenon of the interleaf paper 25 is prevented, and the workability of filter manufacture can be improved.

In addition, the thickness of the intermediate layer 251 can be adjusted by adjusting the thickness of the polymer material extruded through the T-die. For example, the thickness of the intermediate layer 251 including PLA may be about 10 μm to about 100 μm. The thickness of the intermediate layer 251 can be appropriately adjusted according to the thickness of the inner paper and the outer paper. Accordingly, by adjusting the PLA interleaf 25 so as not to be thick, the circularity of the filter can be maintained, and the workability of manufacturing the filter can be improved. The inner paper can be applied with inner sizing, and the outer paper can be applied with both inner sizing and surface sizing. When the slip sheet is manufactured, the surface with low smoothness of the paper is exposed, and the surface with high smoothness of the paper is in contact with the intermediate layer 251. The inner paper or outer paper has a bulk of about 1.2. For example, the thickness of the inner paper can be about 30 μm, the basis weight can be about 25 g / m ² , the thickness of the outer paper can be about 70 μm to about 75 μm, and the basis weight can be about 50 g / m ^{2 to} about 60 g / m ² .

  The intermediate layer 251 may further include one or more polymer materials other than PLA in order to reduce the strong characteristics of the PLA, thereby maintaining the roundness of the filter and improving the workability of the filter manufacturing. Can be maintained. For example, the polymer substance may be a biodegradable polymer such as PLA or a general polymer. Examples of biodegradable polymers include PBS (polybutylene succinate), PHA (polyhydroxyl alkanoate), TPS (thermoplastic star), PE (polyethylene), PP (polypropylene), and PET (polyethylene). -co-isophthalate), PTT (polymethylethylene terephthalate), PBT (polybutylene terephthalate), PBAT (poly (butylene adipate-co-terephthalate)), PA (polyamide) PCL (polycaprolactone), PGA (polyglycol acid), PHB (polyhydroxy butyrate) the mixing ratio of the polymer material other than .PLA there etc. are not particularly limited.

  Next, a cigarette according to an embodiment of the present invention will be described in detail with reference to FIG. The description overlapping with the description of FIGS. 1 to 3 described above is omitted.

  FIG. 4 is a cross-sectional view schematically showing a cigarette according to an embodiment of the present invention.

  Referring to FIG. 4, the cigarette filter unit 20 includes two sub-filter units 22 and 23 and a space unit 24. Each of the two sub-filter portions 22 and 23 can include fibrous or filamentous acetate tow. The cigarette filter unit 20 is a double filter including two sub filter units 22 and 23, and the lengths of the respective sub filter units 22 and 23 can be appropriately adjusted.

  The cigarette filter unit 20 is surrounded by one or more wrapping papers, and the porosity of these wrapping papers can be variously adjusted according to the type of cigarettes. Each of the two sub-filter portions 22 and 23 is surrounded by cigarette filter wrapping paper 27 and 26. The sub-filter part 23 and the space part 24 are surrounded by PLA interleaf paper 25. Due to the inherent properties of the PLA itself, the strength of the PLA slip sheet 25 is improved, the water penetration into the PLA slip sheet 25 is reduced, and the biodegradability of the PLA slip sheet 25 is improved. Eventually, distortion or collapse of the space 24 surrounded by the PLA interleaf 25 can be prevented. The PLA interleaf paper 25 may include an inner paper layer 258, an outer paper layer 259, and an intermediate layer 251 that is located between the inner paper layer 258 and the outer paper layer 259 and includes PLA. The two sub filter parts 22 and 23 are surrounded and connected by one cigarette filter paper 28.

  Next, a cigarette according to an embodiment of the present invention will be described in detail with reference to FIG. The description overlapping with the description of FIGS. 1 to 3 described above is omitted.

  FIG. 5 is a cross-sectional view schematically showing a cigarette according to an embodiment of the present invention.

  Referring to FIG. 5, the cigarette filter unit 20 includes two sub-filter units 22 and 23 and a space unit 24. Each of the two sub-filter portions 22 and 23 can include fibrous or filamentous acetate tow. The cigarette filter unit 20 is a double filter including two sub filter units 22 and 23, and the lengths of the respective sub filter units 22 and 23 can be appropriately adjusted.

  The cigarette filter unit 20 is surrounded by one or more wrapping papers, and the porosity of these wrapping papers can be variously adjusted according to the type of cigarettes. Each of the two sub-filter portions 22 and 23 is surrounded by cigarette filter wrapping paper 27 and 26. The two sub-filter parts 22 and 23 and the space part 24 are surrounded by PLA interleaf paper 25, whereby the two sub-filter parts 22 and 23 are connected to each other. Due to the inherent properties of the PLA itself, the strength of the PLA slip sheet 25 is improved, the water penetration into the PLA slip sheet 25 is reduced, and the biodegradability of the PLA slip sheet 25 is improved. Eventually, distortion or collapse of the space 24 surrounded by the PLA interleaf 25 can be prevented. The PLA interleaf paper 25 may include an inner paper layer 258, an outer paper layer 259, and an intermediate layer 251 that is located between the inner paper layer 258 and the outer paper layer 259 and includes PLA.

[Example]
EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, the following Example is only an Example of this invention, and this invention is not limited to the following Example.

Example 1
A PLA interleaf is produced while a composition in which PLA and PBS are mixed at a weight ratio of 80:20 is extruded through a T-die between the inner paper and the outer paper. The melting temperature of the PLA used is about 170 degrees Celsius to about 180 degrees Celsius, and the melting index is about 7.5 g / 10 min to about 8.0 g / 10 min. The thickness of the extruded composition is about 20 μm. The used inner paper has a basis weight of about 24.1 g / m ² , a thickness of about 33.2 μm, a smoothness of about 0.73 T and about 1.78 W, and a size of about 0.5 sec. Has a basis weight of about 59.7 g / m ² , a thickness of about 75.3 μm, a smoothness of about 138.3 T and about 47.1 W, and a size of about 19.8 sec. The total thickness of the PLA slip sheet is about 122 μm. After manufacturing the cigarette filter unit 20 as shown in FIG. 4 using the manufactured PLA interleaving paper, the cigarette filter unit 20 and the cigarette filler unit 10 are combined to manufacture the cigarette 1.

Comparative Example 1
After manufacturing the cigarette filter portion 20 in the same manner as in Example 1 except that a filter paper having a basis weight of about 90 g / m ² and a thickness of about 112 μm is used instead of the PLA interleaving paper. The cigarette filter part 20 and the cigarette filler part 10 are combined to produce the cigarette 1.

Measurement of physical properties and workability of cigarette filter manufacture The physical properties and workability of 50 cigarette filters of Example 1 and 50 cigarette filters of Comparative Example 1 were measured and shown in Table 1 below.

  Referring to Table 1, the workability and physical properties of the cigarette filter of Example 1 are comparable to the workability and physical properties of the cigarette filter of Comparative Example 1. However, the reason why the suction resistance of the cigarette filter of Example 1 is higher than the suction resistance of the cigarette filter of Comparative Example 1 is that the PLA interleaf paper is about 10 μm thicker than the general filter paper. However, by adjusting the inner paper, outer paper, and extrusion thickness, the thickness of the PLA slip sheet can be adjusted to suit the application of the PLA slip sheet. For example, PLA paper with adjusted thickness is applicable to ultra-slim products with a cigarette filter circumference of about 16.7 mm and regular products with a cigarette filter circumference of about 24.2 mm. Is possible.

Measuring strain strength of cigarette filters and cigarettes Strain strength measures the maximum force that a measurement part receives when the measurement part is pushed to a depth of about 2 mm at a constant speed in a dry or wet state using a crushing strength measuring instrument. . The measurement part in the dry state is the distance from the mouth of the cigarette and is about 2 mm. In the wet state, it is immersed in about 0.2 mL of water for about 10 seconds, and the measurement part is about 2 mm away from the mouth of the cigarette.

The strain strengths of 30 cigarette filters of Example 1 and 30 cigarette filters of Comparative Example 1 were measured and shown in Table 2 below.

Referring to Table 2, the cigarette filter of Example 1 was about 43% stronger in the dry state and about 50% stronger in the wet state than the cigarette filter of Comparative Example 1. The reason why the strength increase rate in the wet state is large is that the moisture penetration preventing property of PLA interleaving paper is superior to that of general filter paper. The moisture permeability of a PLA film having a thickness of about 20 μm is about 300 to 500 g / m ² for 24 hours (38 degrees Celsius, 100% RH), and measurement using a general filter paper is impossible.

The strain strengths of 40 cigarettes of Example 1 and 40 cigarettes of Comparative Example 1 were measured and shown in Table 3 below.

  Referring to Table 3, the cigarette of Example 1 increased in strength by about 37% in the dry state and increased by about 66% in the wet state than the cigarette of Comparative Example 1.

  The preferred embodiments of the present invention have been described in detail above. However, the scope of the present invention is not limited to this, and various skilled artisans using the basic concept of the present invention defined in the claims. Various modifications and improvements are also within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Cigarette 10 ... Cigarette filler part 11 ... Cigarette filler 19 ... Cigarette paper 20 ... Cigarette filter part 21, 22, 23 ... Sub filter part 24 ... Space part 25 ... PLA interleaf paper 26, 27, 28 ... Filter wrapping paper 29 ... Chip Paper 251 ... Intermediate layer 258 ... Inner paper layer 259 ... Outer paper layer

Claims (8)

A sub-filter section surrounded by filter paper,
A space part including a vacant space on the side of the sub-filter part;
PLA (polarized acid) slip paper (laminated paper) surrounding the sub-filter part and the space part;
Including
The PLA interleaving paper includes an inner paper layer, an outer paper layer, and an intermediate layer positioned between the inner paper layer and the outer paper layer,
The intermediate layer includes PLA, the intermediate layer is in contact with the inner paper layer and the outer paper layer, and the thickness of the intermediate layer is 10 μm to 100 μm,
The PLA interleaf has an inner paper that forms the inner paper layer and an outer paper that forms the outer paper layer, and the inner paper and the outer paper are subjected to corona treatment. Cigarette filter.   The cigarette filter according to claim 1, wherein the intermediate layer includes PLA and one or more biodegradable polymer substances. A cigarette notch that includes cigarette notches and is surrounded by cigarette paper;
A cigarette filter portion connected to the cigarette notch,
Including
The cigarette filter part is
A sub-filter section surrounded by filter paper,
A space part including a vacant space on the side of the sub-filter part;
A PLA (laminated paper) surrounding the sub-filter part and the space part,
The PLA interleaving paper includes an inner paper layer, an outer paper layer, and an intermediate layer positioned between the inner paper layer and the outer paper layer,
The intermediate layer includes PLA, the intermediate layer is in contact with the inner paper layer and the outer paper layer, and the thickness of the intermediate layer is 10 μm to 100 μm,
The PLA interleaf has an inner paper that forms the inner paper layer and an outer paper that forms the outer paper layer, and the inner paper and the outer paper are subjected to corona treatment. Cigarette.   The cigarette according to claim 3, wherein the cigarette filter portion is a monofilter.   The cigarette filter unit includes a first sub-filter unit surrounded by a first filter wrapping paper and a second sub-filter unit surrounded by a second filter wrapping paper, and the first sub-filter unit and the space unit The cigarette according to claim 3, wherein the second sub-filter part is located between the first and second sub-filter parts.   The cigarette according to claim 5, wherein the PLA interleaving paper surrounds the second sub-filter part and the space part.   The cigarette according to claim 5, wherein the PLA interleaving paper surrounds the first sub-filter part, the second sub-filter part, and the space part.   The cigarette of claim 3, wherein the intermediate layer comprises PLA and one or more biodegradable polymeric substances.

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