JPH07310005A - Odorless biodegradable plastic - Google Patents
Odorless biodegradable plasticInfo
- Publication number
- JPH07310005A JPH07310005A JP12702694A JP12702694A JPH07310005A JP H07310005 A JPH07310005 A JP H07310005A JP 12702694 A JP12702694 A JP 12702694A JP 12702694 A JP12702694 A JP 12702694A JP H07310005 A JPH07310005 A JP H07310005A
- Authority
- JP
- Japan
- Prior art keywords
- biodegradable plastic
- odor
- deodorant
- odorless
- plastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無臭生分解性プラスチ
ックに関し、更に詳しくは、ヒートシール性が良好で且
つヒートシール時において臭気の発生が少なく、実質的
に臭気のない成形体を提供し得る無臭生分解性プラスチ
ックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an odorless biodegradable plastic, and more specifically, it provides a molded article which has a good heat-sealing property and produces little odor during heat-sealing and is substantially odorless. To obtain an odorless biodegradable plastic.
【０００２】[0002]
【従来の技術】近年、医療、農業、包装等の各分野にお
いて、生分解性プラスチックが利用されている。生分解
性プラスチックの中で、特にその原料が微生物代謝物質
由来のものは、プラスチック自身特有の臭気をもち、加
工された製品においてもその特有の臭気は残存してい
る。また、生分解性プラスチックは熱的分解を受け易
く、したがって成形加工時には熱分解が起こり、その分
解生成物は強い臭気を発する。このようなことが生分解
性プラスチックの用途を狭くしている。この問題に対し
て、最終成形加工時、例えばヒートシール時に極力熱分
解をおさえた温度条件にてシールをするなどの方法がと
られているものの、従来のオレフィン系プラスチックに
比してシール不良やシール作業効率の低下がみられる
上、上記のように制約された条件で加工されたとして
も、得られた製品には、やはり樹脂特有の臭気が残存し
ている。以上のような問題が、生分解性プラスチックの
汎用、特に食品用途への応用展開を困難なものにしてい
る。2. Description of the Related Art In recent years, biodegradable plastics have been used in various fields such as medical care, agriculture and packaging. Among biodegradable plastics, especially those whose raw materials are derived from microbial metabolites have odors peculiar to the plastics themselves, and the peculiar odors remain in processed products. In addition, biodegradable plastics are susceptible to thermal decomposition, so that thermal decomposition occurs during molding and the decomposition products give off a strong odor. This limits the use of biodegradable plastics. In order to solve this problem, at the time of final molding processing, for example, at the time of heat sealing, sealing is performed under temperature conditions that suppress thermal decomposition as much as possible. In addition to the decrease in sealing work efficiency, the odor peculiar to the resin still remains in the obtained product even if the product is processed under the restricted conditions as described above. The above problems make it difficult to apply biodegradable plastics to general-purpose applications, particularly food applications.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、ヒートシー
ル性が良好で且つヒートシール時において臭気の発生が
少なく、実質的に臭気のない成形体を与える無臭生分解
性プラスチックを提供するものである。DISCLOSURE OF THE INVENTION The present invention provides an odorless biodegradable plastic which has a good heat-sealing property, produces little odor during heat-sealing, and gives a substantially odorless molded product. is there.
【０００４】[0004]
【課題を解決するための手段】生分解性プラスチックの
臭気原因成分は、熱時であれば、その分解生成物として
低級脂肪酸類や一部アルデヒド類の生成が考えられる。
一方、樹脂自身の臭気については、微生物の代謝に由来
するものや低重合体などが考えられる。このような臭い
原因物質に対して有効に働く脱臭剤としては、物理的吸
着によって脱臭する多孔性活性物質や、臭気成分を酸化
還元作用によって分解する触媒物質とがある。The odor-causing component of biodegradable plastics is considered to be the formation of lower fatty acids and some aldehydes as decomposition products thereof when heated.
On the other hand, regarding the odor of the resin itself, those derived from the metabolism of microorganisms and low polymers are considered. Deodorizing agents that work effectively against such odor-causing substances include porous active substances that deodorize by physical adsorption and catalyst substances that decompose odorous components by redox action.
【０００５】多孔性活性物質としては、活性炭、活性白
土、酸性白土、天然ゼオライト、合成疎水性ゼオライト
及び親水性ゼオライト、ベントナイト、セピオライト、
シリカ、ＭｇＯとＳｉＯ2 の混合物、ＭｇＯとＳｉＯ2
の複合体等が挙げられる。触媒物質としては、鉄−マン
ガン系、白金系、パラジウム−白金系、酸化マンガン
系、シリカ−アルミナ系（ゼオライト系）、さらに光触
媒作用をもつＴｉＯ2 系等の無機系の他、有機系の酵素
やフタロシアニン系人工酵素などが挙げられる。これら
の物質は単独又は２種以上混合して用いられ、多孔性活
性物質と触媒物質との併用も可能である。とりわけ、触
媒物質との併用は、多孔性活性物質の吸着した臭気物質
を触媒物質が分解し、その結果、多孔性活性物質は再度
臭気物質の吸着が可能となり、これの繰り返しにより多
孔性活性物質の脱臭機能の持続性がより向上する。Examples of the porous active substance include activated carbon, activated clay, acid clay, natural zeolite, synthetic hydrophobic zeolite and hydrophilic zeolite, bentonite, sepiolite,
Silica, a mixture of MgO and SiO 2, MgO and SiO 2
And the like. Examples of the catalytic substance include iron-manganese-based, platinum-based, palladium-platinum-based, manganese oxide-based, silica-alumina-based (zeolite-based), inorganic-based enzymes such as TiO 2 having a photocatalytic action, and organic-based enzymes. And phthalocyanine artificial enzymes. These substances may be used alone or in combination of two or more, and the porous active substance and the catalyst substance may be used in combination. In particular, when used in combination with a catalytic substance, the catalytic substance decomposes the odorous substance adsorbed by the porous active substance, and as a result, the porous active substance becomes able to adsorb the odorous substance again, and by repeating this, the porous active substance is absorbed. The durability of the deodorizing function of is further improved.
【０００６】ゼオライトは、主に四面体に配位したＳｉ
Ｏ2 とＡｌ2 Ｏ3 から構成される無機の結晶性化合物で
ある。中でも疎水性ゼオライトは、四面体に配位したＳ
ｉＯ2 ／Ａｌ2 Ｏ3 のモル比においてＳｉＯ2 リッチ
で、その比の値が３５以上のゼオライトをいい、とりわ
け低級脂肪、アルデヒド類等の臭気原因物質を吸着する
能力が大きく、さらにＳｉ−Ｏ−Ｓｉ結合は疎水性を示
すので水分子を吸着しにくくなり、吸湿による脱臭効果
の低下がなく、長期にわたり安定した脱臭効果を持続す
るので好適である。脱臭剤の粒径は、０．１〜１０μｍ
（平均粒径）の範囲が好適であり、この範囲を逸脱する
と生分解性プラスチックの加工性が悪くなる。Zeolite is mainly composed of tetrahedrally coordinated Si.
It is an inorganic crystalline compound composed of O 2 and Al 2 O 3 . Among them, hydrophobic zeolite is S coordinated in tetrahedron.
iO SiO 2 rich in a molar ratio of 2 / Al 2 O 3, the value of the ratio is good over 35 zeolites, especially lower fat, greater ability to adsorb odor-causing substances, such as aldehydes, further SiO Since the -Si bond exhibits hydrophobicity, it is difficult to adsorb water molecules, the deodorizing effect does not decrease due to moisture absorption, and the stable deodorizing effect is maintained for a long time, which is preferable. The particle size of the deodorant is 0.1 to 10 μm
The range of (average particle size) is suitable, and if it deviates from this range, the processability of the biodegradable plastic becomes poor.
【０００７】生分解性プラスチックは、微生物により、
完全に生分解されるプラスチックで、（１）ポリヒドロ
キシブチレートやその重合体など微生物により生産され
たプラスチック、（２）セルロースやアミロースなどの
天然高分子を化学修飾したプラスチック、（３）石油化
学系原料から合成されたポリエステル系共重合体等プラ
スチックなどがある。中でも、微生物により生産される
プラスチック、例えば、微生物産生ポリエステルである
３−ヒドロキシブチレートと３−ヒドロキシバリレート
からなる共重合体樹脂は、樹脂自身は無論、加工された
製品においても特有の強い臭気をもち、脱臭剤を添加し
て無臭化するのに好適である。Biodegradable plastics are
Completely biodegradable plastics, (1) plastics produced by microorganisms such as polyhydroxybutyrate and its polymers, (2) plastics chemically modified with natural polymers such as cellulose and amylose, (3) petrochemicals Examples include plastics such as polyester copolymers synthesized from raw materials. Among them, plastics produced by microorganisms, for example, copolymer resins consisting of 3-hydroxybutyrate and 3-hydroxyvalerate, which are polyesters produced by microorganisms, are of course the resins themselves, and have a strong odor peculiar to processed products. It is suitable for deodorizing by adding a deodorant.
【０００８】生分解性プラスチックへの脱臭剤の添加量
は、添加されるプラスチック及び脱臭剤の種類などによ
り異なるが、約０．５〜１０重量％が好ましく、加工時
の脱臭も期待する場合は、２重量％以上が好ましい。
０．５重量％未満では、脱臭効果が乏しく、１０重量％
を超えると加工性、ヒートシール性などが低下する。The amount of the deodorant added to the biodegradable plastic varies depending on the type of the plastic and the deodorant added, but is preferably about 0.5 to 10% by weight, and when deodorization during processing is also expected. 2% by weight or more is preferable.
If it is less than 0.5% by weight, the deodorizing effect is poor and it is 10% by weight.
If it exceeds, the workability and heat sealability will be deteriorated.
【０００９】[0009]
【実施例】以下、本発明を実施例に基づいて更に詳しく
説明するが、本発明はこれらのみに限定されるものでは
ない。尚、以下の記載において、特に断らない限り、
「％」は「重量％」を表す。The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited thereto. In the following description, unless otherwise specified.
"%" Represents "% by weight".
【００１０】実施例１ 生分解性プラスチックとして「ＢＩＯＰＯＬ−Ｄ６１０
Ｇ」（融点＝１３６℃ＭＩ±Ｒ＝８ｇ／１０分、密度＝
１．２５、英国ＩＣＩ社製）９５％に脱臭剤として疎水
性ゼオライト「アブセンツ＃３０００」（平均粒径 ５
μｍ、ＳｉＯ2／Ａｌ2 Ｏ3 モル比＝１００、米国ＵＯ
Ｐ社製、ユニオン昭和株式会社販売）の乾燥済みパウダ
ー５％を添加し、ペレタイザーによりダイ温度１６０℃
で疎水性ゼオライト添加ペレットを作製した。基材とし
ては、カップ紙（坪量＝２２０ｇ／m2、日本紙業株式会
社製）を用いた。通常の押出ラミネーターにより冷却ロ
ールにマットロールを使用し、疎水性ゼオライト添加ペ
レットをダイ温度１７０℃で、カップ紙の接液面側に厚
さ２０μｍで押出した。得られた積層体を用いて下記の
方法で臭気評価を行った。Example 1 As a biodegradable plastic, "BIOPOL-D610" was used.
G ”(melting point = 136 ° C. MI ± R = 8 g / 10 minutes, density =
1.25, manufactured by ICI (UK) 95% as a deodorant, hydrophobic zeolite "Absent # 3000" (average particle size 5
μm, SiO 2 / Al 2 O 3 molar ratio = 100, US UO
5% of dried powder of P company, sold by Union Showa Co., Ltd.) is added, and the die temperature is 160 ° C by a pelletizer.
A hydrophobic zeolite-added pellet was prepared with. As the base material, cup paper (basis weight = 220 g / m 2 , manufactured by Nippon Paper Industries Co., Ltd.) was used. A matte roll was used as a cooling roll by an ordinary extrusion laminator, and the hydrophobic zeolite-added pellets were extruded at a die temperature of 170 ° C. onto the liquid contact surface side of the cup paper with a thickness of 20 μm. The odor was evaluated by the following method using the obtained laminate.
【００１１】（臭気評価）積層体の臭気の評価は、得ら
れた積層体をＡ４判に裁断し、各２０枚を茶封筒に入れ
押出ラミネート後１昼夜放置した後茶封筒を開封し、中
にこもった臭気を評価した。また、ヒートシール時の臭
気の評価は、積層体のＡ４判を２枚重ね合わせ、ラミ面
／ラミ面四方をシール温度２５０℃でヒートシールを行
い封筒状のものを得た。得られたシール済み積層体を１
昼夜放置した後シールの一方を開封し、中にこもった臭
気を評価した。臭気の評価は、５名の専門パネラーによ
り、表１に示した６段階臭気強度表示法により行ない、
得られた強度はパネラー５名の平均値（四捨五入）で示
した。(Odor Evaluation) To evaluate the odor of the laminate, the obtained laminate was cut into A4 size sheets, 20 sheets of each were placed in a tea envelope, and after extrusion lamination, the tea envelope was opened for 1 day and then opened. The muddy odor was evaluated. For evaluation of odor during heat-sealing, two A4 sheets of the laminate were superposed and heat-sealed at a sealing temperature of 250 ° C. on the laminating surface / the four sides of the laminating surface to obtain an envelope-shaped product. 1 of the obtained laminated body having been sealed
After standing for 24 hours, one of the seals was opened and the odor contained therein was evaluated. The odor was evaluated by 5 expert panelists using the 6-level odor intensity display method shown in Table 1,
The obtained strength was shown by the average value (rounded off) of 5 panelists.
【００１２】[0012]
【表１】 [Table 1]
【００１３】尚、ヒートシール性の評価はシール温度２
５０℃の条件で、そのシール部分が完全に紙層で破壊す
ることを確認した。The evaluation of the heat-sealing property is conducted at a sealing temperature of 2
It was confirmed that the sealed portion was completely broken by the paper layer under the condition of 50 ° C.
【００１４】評価結果を表２に示す。ヒートシール時に
おいても、また得られた積層体もともに臭気を認めず、
食品関連用途への応用も可能なものであった。また押出
ラミネート時の製膜性、ヒートシール性とも充分であっ
た。The evaluation results are shown in Table 2. At the time of heat sealing, neither the obtained laminate nor odor was observed,
It could be applied to food related applications. Further, the film-forming property and the heat-sealing property at the time of extrusion lamination were sufficient.
【００１５】実施例２ 生分解性プラスチックとして実施例１で使用した樹脂を
用い、これに疎水性ゼオライトとして「ＺＳＭ−５型」
（平均粒径＝５μｍ、ＳｉＯ2 ／Ａｌ2 Ｏ3 モル比＝２
８０、スエーデン エカ・ノーベル・アクチエボラーグ
社製）の乾燥済みパウダーを１％添加し実施例１と同様
にして疎水性ゼオライト添加ペレットを作製した。さら
に基材として実施例１で使用したカップ紙を用い、実施
例１と同様の構成の積層体を得て臭気評価した。評価結
果を表２に示す。疎水性ゼオライトの添加量が少量であ
るため、ヒートシール時の臭気は若干認められるもの
の、ラミネート後の積層体については臭気は認められな
かった。Example 2 The resin used in Example 1 was used as the biodegradable plastic, and "ZSM-5 type" was used as the hydrophobic zeolite.
(Average particle size = 5 μm, SiO 2 / Al 2 O 3 molar ratio = 2
Hydrophobic zeolite-containing pellets were prepared in the same manner as in Example 1 except that 1% of a dried powder of 80, manufactured by Sweden Eka Nobel Activolag Co., Ltd.) was added. Further, using the cup paper used in Example 1 as a base material, a laminate having the same configuration as in Example 1 was obtained, and the odor was evaluated. The evaluation results are shown in Table 2. Due to the small amount of hydrophobic zeolite added, some odor was observed during heat sealing, but no odor was observed in the laminated body after lamination.
【００１６】比較例１ 脱臭剤を添加しないこと以外は実施例１と同様の構成の
積層体を得て臭気評価を行った。評価結果を表２に示
す。積層体は勿論のこと、ヒートシール時にあっては強
い臭気が感じられた。Comparative Example 1 A laminate having the same structure as in Example 1 except that a deodorant was not added was obtained and evaluated for odor. The evaluation results are shown in Table 2. A strong odor was felt not only in the laminate but also during heat sealing.
【００１７】[0017]
【表２】 [Table 2]
【００１８】[0018]
【発明の効果】叙上のとおり、本発明によれば、ヒート
シール性が良好で且つヒートシール時において臭気の発
生が少なく、実質的に臭気のない成形品を与える生分解
性プラスチックが提供される。INDUSTRIAL APPLICABILITY As described above, according to the present invention, there is provided a biodegradable plastic which has a good heat-sealing property, produces little odor during heat-sealing, and gives a molded article having substantially no odor. It
Claims (3)
てなる無臭生分解性プラスチック。1. An odorless biodegradable plastic obtained by adding a deodorant to the biodegradable plastic.
ブチレートと３−ヒドロキシバリレートからなる共重合
体樹脂である請求項１記載の無臭生分解性プラスチッ
ク。2. The odorless biodegradable plastic according to claim 1, wherein the biodegradable plastic is a copolymer resin composed of 3-hydroxybutyrate and 3-hydroxyvalerate.
１又は２記載の無臭生分解性プラスチック。3. The odorless biodegradable plastic according to claim 1 or 2, wherein the deodorant is a hydrophobic zeolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12702694A JP3447114B2 (en) | 1994-05-16 | 1994-05-16 | Odorless biodegradable plastic and food laminate using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12702694A JP3447114B2 (en) | 1994-05-16 | 1994-05-16 | Odorless biodegradable plastic and food laminate using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07310005A true JPH07310005A (en) | 1995-11-28 |
| JP3447114B2 JP3447114B2 (en) | 2003-09-16 |
Family
ID=14949845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12702694A Expired - Lifetime JP3447114B2 (en) | 1994-05-16 | 1994-05-16 | Odorless biodegradable plastic and food laminate using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3447114B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1170327A1 (en) * | 2000-07-08 | 2002-01-09 | Degussa AG | Plastics for absorption of volatile organic compounds |
| WO2019189337A1 (en) * | 2018-03-30 | 2019-10-03 | 大日本印刷株式会社 | Odor-adsorbing molded article resin composition, odor-adsorbing molded article, and packaging material |
| JP2019178222A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Odor adsorptive molded article resin composition, and odor adsorptive molded article |
| JP2019177920A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Package, bib liquid content package formed of the package, and packaging material forming the package |
| JP2019177918A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Package comprising double bag part and packaging material forming double bag package |
| JP2019177919A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Odor adsorption sealant film and package bag and packaging material and package formed of the odor adsorption sealant film |
| WO2022075232A1 (en) * | 2020-10-07 | 2022-04-14 | 株式会社カネカ | Resin composition, and molded body thereof |
-
1994
- 1994-05-16 JP JP12702694A patent/JP3447114B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1170327A1 (en) * | 2000-07-08 | 2002-01-09 | Degussa AG | Plastics for absorption of volatile organic compounds |
| WO2019189337A1 (en) * | 2018-03-30 | 2019-10-03 | 大日本印刷株式会社 | Odor-adsorbing molded article resin composition, odor-adsorbing molded article, and packaging material |
| JP2019178222A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Odor adsorptive molded article resin composition, and odor adsorptive molded article |
| JP2019177920A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Package, bib liquid content package formed of the package, and packaging material forming the package |
| JP2019177918A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Package comprising double bag part and packaging material forming double bag package |
| JP2019177919A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Odor adsorption sealant film and package bag and packaging material and package formed of the odor adsorption sealant film |
| CN111918932A (en) * | 2018-03-30 | 2020-11-10 | 大日本印刷株式会社 | Odor adsorption molded article resin composition, odor adsorption molded article, and packaging material |
| US11578195B2 (en) | 2018-03-30 | 2023-02-14 | Dai Nippon Printing Co., Ltd. | Odor-adsorbing molded article resin composition, odor-adsorbing molded article, and packaging material |
| US11597824B2 (en) | 2018-03-30 | 2023-03-07 | Dai Nippon Printing Co., Ltd. | Odor-adsorbing molded article resin composition, odor-adsorbing molded article, and packaging material |
| WO2022075232A1 (en) * | 2020-10-07 | 2022-04-14 | 株式会社カネカ | Resin composition, and molded body thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3447114B2 (en) | 2003-09-16 |
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