JP2015025038A - Antimicrobial agent content thermoplastic resin composition and manufacturing method of antimicrobial agent content thermoplastic resin article therewith - Google Patents
Antimicrobial agent content thermoplastic resin composition and manufacturing method of antimicrobial agent content thermoplastic resin article therewith Download PDFInfo
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本発明は、無機系抗菌剤を含有する熱可塑性樹脂組成物及びこれを用いた無機系抗菌剤を含む熱可塑性樹脂製品を製造する方法に関し、特に、無機系抗菌剤量のバラツキが少ない熱可塑性樹脂製品の製造方法及びこれに用いる抗菌剤含有熱可塑性樹脂組成物に関する。 The present invention relates to a thermoplastic resin composition containing an inorganic antibacterial agent and a method for producing a thermoplastic resin product including the inorganic antibacterial agent using the same, and in particular, thermoplasticity with a small variation in the amount of the inorganic antibacterial agent. The present invention relates to a method for producing a resin product and an antibacterial agent-containing thermoplastic resin composition used therefor.
近年、無機系抗菌剤は、有機系抗菌剤と比較して熱可塑性樹脂に練りこまれた状態における衛生性、安定性、持続性が高いというメリットを有しているため注目を集めており、この無機系抗菌剤が練りこまれた種々の熱可塑性樹脂製品の研究開発も盛んに行われている。 In recent years, inorganic antibacterial agents have attracted attention because they have the advantage of higher hygiene, stability, and sustainability in a state where they are kneaded in thermoplastic resins compared to organic antibacterial agents. Research and development of various thermoplastic resin products in which this inorganic antibacterial agent is kneaded has been actively conducted.
ところで、熱可塑性樹脂に練りこまれた無機系抗菌剤の抗菌作用は、樹脂製品の表面に分散した無機系抗菌剤が細菌やカビなどに接触することによって発揮されるため、熱可塑性樹脂製品中に均一に分散させる必要がある。 By the way, the antibacterial action of the inorganic antibacterial agent kneaded in the thermoplastic resin is exhibited when the inorganic antibacterial agent dispersed on the surface of the resin product comes into contact with bacteria or molds. It is necessary to disperse uniformly.
しかしながら、上記無機系抗菌剤は、銀などの抗菌性を発現する金属成分を担持させたゼオライトやガラスなどからなる粉末であるため、当該無機系抗菌剤を熱可塑性樹脂に均一に混合することが困難であるという問題があった。 However, since the inorganic antibacterial agent is a powder made of zeolite or glass carrying a metal component that exhibits antibacterial properties such as silver, it is possible to uniformly mix the inorganic antibacterial agent with a thermoplastic resin. There was a problem that it was difficult.
そこで、抗菌剤や着色剤などの粉末状の添加剤が均一に分散した熱可塑性樹脂製品を製造する方法として、従来から、特開昭６０−１８５２９号公報などに開示された、所謂マスターバッチ方式を採用した製造方法が提案されている。このマスターバッチ方式を用いた製造方法とは、樹脂製品の素材の熱可塑性樹脂と同一又は相溶性を有する樹脂に、一旦添加剤を高濃度で分散させ、ペレット状に形成した添加剤含有マスターバッチ（添加剤含有熱可塑性樹脂組成物の一態様）を作成し、この添加剤含有マスターバッチを所定量の熱可塑性樹脂で希釈して樹脂製品を製造するという方法である。 Therefore, as a method for producing a thermoplastic resin product in which powdery additives such as antibacterial agents and colorants are uniformly dispersed, a so-called master batch method disclosed in Japanese Patent Application Laid-Open No. 60-18529 has been conventionally used. The manufacturing method which employ | adopted is proposed. The manufacturing method using this masterbatch method is an additive-containing masterbatch that is formed into pellets by once dispersing the additive at a high concentration in a resin having the same or compatibility with the thermoplastic resin of the resin product. (One mode of an additive-containing thermoplastic resin composition) is prepared, and this additive-containing master batch is diluted with a predetermined amount of a thermoplastic resin to produce a resin product.
ところで、上記マスターバッチ方式を採用した製造方法において、添加剤の分散性を高めて、熱可塑性樹脂製品における添加剤のバラツキを抑えるためには、略同一サイズの希釈用熱可塑性樹脂ペレットと添加剤含有マスターバッチとを混合した後に溶融混練することが効果的であるというのが、当業者の間における一般的な認識であった。 By the way, in the manufacturing method adopting the master batch method, in order to increase the dispersibility of the additive and suppress the dispersion of the additive in the thermoplastic resin product, the thermoplastic resin pellet for dilution and the additive having substantially the same size are used. It has been a general recognition among those skilled in the art that it is effective to melt-knead after mixing the containing masterbatch.
しかしながら、略同一サイズの希釈用樹脂ペレットと添加剤含有マスターバッチとを用いた場合においても、添加剤の分散が十分であるとは言えず、依然として熱可塑性樹脂製品間において添加剤量にバラツキが生じている。 However, even when using approximately the same size of dilution resin pellets and an additive-containing masterbatch, it cannot be said that the dispersion of the additive is sufficient, and the amount of additive still varies between thermoplastic resin products. Has occurred.
そして、上記のように添加剤の量にバラツキが生じることによって、添加剤の実際の含有量が理論値を大きく下回る製品が製造されるという問題が生じ、また、この問題を解消すべく、理論値を下回る分を見越して、製造段階で添加剤の含有量を増加させた場合には、余分な製造コストが発生するという問題が生じる。 As a result of the variation in the amount of the additive as described above, there arises a problem that a product in which the actual content of the additive is significantly lower than the theoretical value is produced, and in order to solve this problem, If the content of the additive is increased in the manufacturing stage in anticipation of the amount below the value, there arises a problem that extra manufacturing cost occurs.
そこで、本願発明者らは、添加剤量のバラツキをより抑えることができる方法について、鋭意研究を重ねた結果、希釈用樹脂ペレットのサイズに対するマスターバッチのサイズを変えることにより、熱可塑性樹脂製品間における添加剤量のバラツキを従来よりも小さくできることを見出した。 Therefore, the inventors of the present invention have conducted extensive research on a method that can further suppress variation in the amount of additive, and as a result, by changing the size of the master batch relative to the size of the resin pellet for dilution, It has been found that the variation in the amount of additive can be made smaller than before.
本発明は上記知見に基づきなされたものであり、熱可塑性樹脂製品間における無機系抗菌剤量のバラツキを抑えることができる熱可塑性樹脂製品の製造方法及びこれに用いる抗菌剤含有樹脂組成物の提供を、その目的とする。 The present invention has been made on the basis of the above knowledge, and provides a method for producing a thermoplastic resin product capable of suppressing variations in the amount of an inorganic antibacterial agent between thermoplastic resin products, and an antibacterial agent-containing resin composition used therefor Is the purpose.
上記課題を解決するための本発明は、
定量供給装置を用いずに無機系抗菌剤を含む熱可塑性樹脂製品を製造する際に、１ｇ当たりの個数（Ｍ２）が３０個以上１００個以下である希釈用熱可塑性樹脂とともに混合され溶融混練される樹脂組成物であって、
熱可塑性樹脂と無機系抗菌剤とを含み、
その１ｇ当たりの個数（Ｍ１）が２００個以上８００個以下である抗菌剤含有熱可塑性樹脂組成物に係る。
The present invention for solving the above problems is as follows.
When producing a thermoplastic resin product containing an inorganic antibacterial agent without using a quantitative supply device, the number (M2) per gram (M2) is mixed and melt-kneaded with a dilution thermoplastic resin having a number of 30 to 100. A resin composition comprising:
Including a thermoplastic resin and an inorganic antibacterial agent,
It relates to an antibacterial agent-containing thermoplastic resin composition whose number (M1) per gram is 200 or more and 800 or less.
また、本発明は、
定量供給装置を用いずに無機系抗菌剤を含む熱可塑性樹脂製品を製造する方法であって、
熱可塑性樹脂と無機系抗菌剤とを混合して溶融混練した後、切断又は粉砕して抗菌剤含有熱可塑性樹脂組成物を製造する工程と、
希釈用熱可塑性樹脂と前記抗菌剤含有熱可塑性樹脂組成物とを混合した後、溶融混練し成形して抗菌剤含有熱可塑性樹脂製品を製造する工程とを含み、
前記抗菌剤含有熱可塑性樹脂組成物は、その１ｇ当たりの個数（Ｍ１）が２００個以上８００個以下であり、
前記希釈用熱可塑性樹脂は、その１ｇ当たりの個数（Ｍ２）が３０個以上１００個以下である抗菌剤含有熱可塑性樹脂製品の製造方法に係る。
The present invention also provides:
A method for producing a thermoplastic resin product containing an inorganic antibacterial agent without using a quantitative supply device,
A step of producing a thermoplastic resin composition containing an antibacterial agent by cutting or crushing after mixing and melting and kneading a thermoplastic resin and an inorganic antibacterial agent;
Mixing the thermoplastic resin for dilution and the antibacterial agent-containing thermoplastic resin composition, and then melt-kneading and molding to produce an antibacterial agent-containing thermoplastic resin product,
The antibacterial agent-containing thermoplastic resin composition has a number per 1 g (M1) of 200 or more and 800 or less,
The dilution thermoplastic resin relates to a method for producing an antibacterial agent-containing thermoplastic resin product having a number (M2) per gram of 30 to 100.
この抗菌剤含有熱可塑性樹脂製品の製造方法によれば、まず、熱可塑性樹脂と無機系抗菌剤とを混合して溶融混練する。ついで、これを切断又は粉砕して抗菌剤含有熱可塑性樹脂組成物を製造する。この際、製造された樹脂組成物のサイズが、１ｇ当たりの個数（Ｍ１）が２００個以上８００個以下となるようなサイズに切断又は粉砕する。 According to this method for producing an antibacterial agent-containing thermoplastic resin product, first, a thermoplastic resin and an inorganic antibacterial agent are mixed and melt-kneaded. Next, this is cut or crushed to produce an antibacterial agent-containing thermoplastic resin composition. At this time, the size of the manufactured resin composition is cut or pulverized so that the number per 1 g (M1) is 200 or more and 800 or less.
次に、希釈用熱可塑性樹脂と抗菌剤含有熱可塑性樹脂組成物とを定量供給装置を用いずに混合した後に溶融混練し、抗菌剤含有熱可塑性樹脂組成物を希釈して成形することで抗菌剤を含む熱可塑性樹脂製品を製造する。尚、希釈用熱可塑性樹脂は、１ｇ当たりの個数（Ｍ２）が３０個以上１００個以下であるサイズのものを使用する。 Next, the dilution thermoplastic resin and the antibacterial agent-containing thermoplastic resin composition are mixed without using a quantitative supply device, and then melt-kneaded, and the antibacterial agent-containing thermoplastic resin composition is diluted and molded. Manufactures thermoplastic resin products containing agents. In addition, the thermoplastic resin for dilution uses the size whose number (M2) per 1g is 30 or more and 100 or less.
このように、抗菌剤含有熱可塑性樹脂組成物のサイズをＭ１が２００個以上８００個以下となるサイズとし、希釈用熱可塑性樹脂のサイズをＭ２が３０個以上１００個以下となるサイズとすることで、ペレットの個数が少なくなりすぎることや、希釈用熱可塑性樹脂のサイズに対して抗菌剤含有熱可塑性樹脂組成物のサイズが小さくなりすぎることもないため、製造される樹脂製品間の無機系抗菌剤量のバラツキが解消される。また、熱可塑性樹脂製品間の無機系抗菌剤量のバラツキを小さくすることができるため、従来のような余分の製造コストの発生させることなく、無機系抗菌剤の含有量が理論値に略等しい製品を製造することができる。 As described above, the size of the antibacterial agent-containing thermoplastic resin composition is set to a size in which M1 is 200 or more and 800 or less, and the size of the dilution thermoplastic resin is set to a size in which M2 is 30 or more and 100 or less. Therefore, the number of pellets is not too small, and the size of the thermoplastic resin composition containing the antibacterial agent is not too small relative to the size of the dilution thermoplastic resin. Dispersion of antibacterial agent amount is eliminated. Moreover, since the variation in the amount of the inorganic antibacterial agent between the thermoplastic resin products can be reduced, the content of the inorganic antibacterial agent is substantially equal to the theoretical value without generating extra manufacturing cost as in the prior art. The product can be manufactured.
尚、前記Ｍ１が２００個以下、Ｍ２が３０個以下となると、ペレットの個数が少なくなるため、無機系抗菌剤のバラツキが生じ易くなり、また、Ｍ１が８００個以上、Ｍ２が１００以上となると、射出成型機への食い込みが悪くなる。 In addition, when the M1 is 200 or less and the M2 is 30 or less, the number of pellets is reduced, so that the dispersion of the inorganic antibacterial agent is likely to occur, and when the M1 is 800 or more and the M2 is 100 or more. , Bite into the injection molding machine is worse.
尚、熱可塑性樹脂製品を製造する際のペレットの個数をより適正な個数とするために、前記抗菌剤含有熱可塑性樹脂組成物のサイズをＭ１が２００個以上４５０個以下とし、前記希釈用熱可塑性樹脂のサイズをＭ２が４０個以上９０個未満とすることが好ましい。 In order to make the number of pellets when manufacturing a thermoplastic resin product more appropriate, the size of the antibacterial agent-containing thermoplastic resin composition is set to 200 to 450 and the dilution heat The size of the plastic resin is preferably 40 or more and less than 90.
また、前記無機系抗菌剤としては、銀、銅又は亜鉛の内の少なくとも１種を含有することが好ましい。 The inorganic antibacterial agent preferably contains at least one of silver, copper and zinc.
以上のように、本発明に係る抗菌剤含有熱可塑性樹脂組成物及びこれを用いた抗菌剤含有熱可塑性樹脂製品の製造方法によれば、無機系抗菌剤量のバラツキが少ない熱可塑性樹脂製品を製造することができ、また、無機系抗菌剤量のバラツキによって生じる問題の発生を抑えることができる。 As described above, according to the method for producing an antibacterial agent-containing thermoplastic resin composition and an antibacterial agent-containing thermoplastic resin product using the antibacterial agent-containing thermoplastic resin product according to the present invention, a thermoplastic resin product with little variation in the amount of the inorganic antibacterial agent is obtained. It can be manufactured, and the occurrence of problems caused by variations in the amount of inorganic antibacterial agent can be suppressed.
以下、本発明の具体的な実施の形態について詳細に説明する。 Hereinafter, specific embodiments of the present invention will be described in detail.
本発明の抗菌剤含有熱可塑性樹脂組成物は、熱可塑性樹脂と無機系抗菌剤とを含んでおり、１ｇ当たりの個数（Ｍ１）が２００個以上８００個以下となるサイズである。尚、ペレットの個数をより適正な個数とするためにＭ１が２００個以上４５０個以下となるサイズとすることがより好ましい。 The antibacterial agent-containing thermoplastic resin composition of the present invention contains a thermoplastic resin and an inorganic antibacterial agent, and has a size such that the number (M1) per gram is 200 or more and 800 or less. In addition, in order to make the number of pellets more appropriate, it is more preferable to set the size so that M1 is 200 or more and 450 or less.
前記熱可塑性樹脂は、後述する希釈用熱可塑性樹脂と同種であることが好ましいが、十分な相溶性を有するものであれば同種のものに限られない。また、当該熱可塑性樹脂の具体例としては、ポリエチレン（ＰＥ），ポリプロピレン（ＰＰ），ポリスチレン（ＰＳ），アクリロニトリル−ブタジエン−スチレン共重合体（ＡＢＳ），ナイロン，ポリカーボネート（ＰＣ），ポリエチレンテレフタレート（ＰＥＴ），ポリブチレンテレフタレート（ＰＢＴ），ポリメチルメタクリレート（ＰＭＭＡ），アクリロニトリル−アクリルゴム−スチレン共重合樹脂（ＡＳＡ）などを例示することができる。尚、これら熱可塑性樹脂は、特に射出成型用のグレードであることが好ましい。 The thermoplastic resin is preferably the same type as a dilution thermoplastic resin described later, but is not limited to the same type as long as it has sufficient compatibility. Specific examples of the thermoplastic resin include polyethylene (PE), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), nylon, polycarbonate (PC), polyethylene terephthalate (PET). ), Polybutylene terephthalate (PBT), polymethyl methacrylate (PMMA), acrylonitrile-acrylic rubber-styrene copolymer resin (ASA), and the like. These thermoplastic resins are particularly preferably grades for injection molding.
また、前記無機系抗菌剤には、銀，亜鉛，銅などの一種若しくは二種以上の抗菌性金属を無機化合物に担持させたものを用いることができる。担持体としては、ゼオライト，アパタイト，リン酸ジルコニウム，酸化チタン，シリカゲル，アルミニウム硫酸塩水酸化物，燐酸カルシウム，珪酸カルシウム等を挙げることができる。また、リン酸系，硼酸系，珪酸系の各系ガラスの一種若しくは２種以上をガラス形成成分としたガラスに、銀，亜鉛，銅などの一種若しくは２種以上の抗菌性金属を含有せしめたガラス質抗菌剤も無機系抗菌剤として用いることができる。当然、抗菌性金属を担持させた抗菌剤とガラス質抗菌剤とを併用して用いることもできる。 The inorganic antibacterial agent may be one in which one or more antibacterial metals such as silver, zinc and copper are supported on an inorganic compound. Examples of the support include zeolite, apatite, zirconium phosphate, titanium oxide, silica gel, aluminum sulfate hydroxide, calcium phosphate, and calcium silicate. In addition, one or more kinds of antibacterial metals such as silver, zinc, copper, etc. were added to glass containing one or more kinds of phosphoric acid, boric acid and silicic acid glasses as glass forming components. A glassy antibacterial agent can also be used as an inorganic antibacterial agent. Of course, an antibacterial agent carrying an antibacterial metal and a glassy antibacterial agent can be used in combination.
そして、この抗菌剤含有熱可塑性樹脂組成物は、従来から常用されている方法を使用して製造することができる。すなわち、まず、熱可塑性樹脂と無機系抗菌剤とをヘンシェルミキサー、タンブラーなどを用いて混合する。この際、無機系抗菌剤以外に顔料や帯電防止剤，滑剤，分散剤，酸化防止剤，紫外線吸収剤などを配合するようにしても良い。ついで、樹脂の特性に応じた温度条件などを設定し、この混合物をミキシングロール，ニーダー，加圧ニーダー又は二軸スクリュー押出混練機により混練する。そして、混練したものをストランド状に水中に押し出して冷却した後、高速カッターにより切断する又は液体窒素によって凍結して粉砕し篩によって選り分けることで所定のサイズの抗菌剤含有熱可塑性樹脂組成物が得られる。 And this antibacterial agent containing thermoplastic resin composition can be manufactured using the method conventionally used conventionally. That is, first, a thermoplastic resin and an inorganic antibacterial agent are mixed using a Henschel mixer, a tumbler, or the like. At this time, pigments, antistatic agents, lubricants, dispersants, antioxidants, ultraviolet absorbers, etc. may be blended in addition to the inorganic antibacterial agents. Subsequently, the temperature conditions according to the characteristics of the resin are set, and the mixture is kneaded by a mixing roll, a kneader, a pressure kneader, or a twin screw extrusion kneader. Then, after the kneaded product is extruded into water in the form of strands and cooled, it is cut with a high-speed cutter or frozen with liquid nitrogen and crushed and sorted by a sieve to obtain an antibacterial agent-containing thermoplastic resin composition of a predetermined size. can get.
次に、この抗菌剤含有熱可塑性樹脂組成物とペレット状の希釈用熱可塑性樹脂とを、定量供給装置を用いないで、すなわち、ヘンシェルミキサーやタンブラーなどを用いて予備混合した後、樹脂の特性に応じた温度条件などを設定し、ホッパーを備えたスクリュー式の射出成型装置を用いて射出成型することで、所定形状の抗菌剤含有熱可塑性樹脂製品が得られる。 Next, the antibacterial agent-containing thermoplastic resin composition and the pellet-shaped thermoplastic resin for dilution are preliminarily mixed without using a quantitative supply device, that is, using a Henschel mixer, a tumbler, etc. A thermoplastic resin product containing an antibacterial agent having a predetermined shape can be obtained by setting the temperature conditions according to the conditions and performing injection molding using a screw-type injection molding apparatus equipped with a hopper.
尚、希釈用熱可塑性樹脂は、１ｇ当たりの個数（Ｍ２）が３０個以上１００個以下となるサイズであり、ペレットの個数をより適正な個数とするためにＭ２が４０個以上９０個未満となるサイズとすることがより好ましい。また、希釈用熱可塑性樹脂としては、抗菌剤含有熱可塑性樹脂組成物に含まれる熱可塑性樹脂と同様に、ポリエチレン（ＰＥ），ポリプロピレン（ＰＰ），ポリスチレン（ＰＳ），アクリロニトリル−ブタジエン−スチレン共重合体（ＡＢＳ），ナイロン，ポリカーボネート（ＰＣ），ポリエチレンテレフタレート（ＰＥＴ），ポリブチレンテレフタレート（ＰＢＴ），ポリメチルメタクリレート（ＰＭＭＡ），アクリロニトリル−アクリルゴム−スチレン共重合樹脂（ＡＳＡ）などを例示することができ、特に射出成型用のグレードであることが好ましい。 The dilution thermoplastic resin has a size (M2) of 30 or more and 100 or less per gram, and M2 is 40 or more and less than 90 in order to make the number of pellets more appropriate. It is more preferable to set it as a size. In addition, as the thermoplastic resin for dilution, polyethylene (PE), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer, as in the thermoplastic resin contained in the antibacterial agent-containing thermoplastic resin composition. Examples include coalescence (ABS), nylon, polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polymethyl methacrylate (PMMA), acrylonitrile-acrylic rubber-styrene copolymer resin (ASA), etc. In particular, a grade for injection molding is preferable.
上記のようにして得られた抗菌剤含有熱可塑性樹脂製品は、従来の方法、すなわち、略同じサイズの抗菌剤含有熱可塑性樹脂組成物と希釈用熱可塑性樹脂とを混合した後、射出成型する方法で得られるものと比較すると、樹脂製品間における無機系抗菌剤量のバラツキが小さいものとなる。 The antibacterial agent-containing thermoplastic resin product obtained as described above is injection-molded after mixing the antibacterial agent-containing thermoplastic resin composition and the dilution thermoplastic resin of the conventional method, that is, approximately the same size. Compared with the one obtained by the method, the variation in the amount of the inorganic antibacterial agent between the resin products is small.
以下、本発明の具体的な実施例について説明する。 Hereinafter, specific examples of the present invention will be described.
無機系抗菌剤として平均粒子径が１０μｍ以下の銀系リン酸・ホウ酸ガラス（富士ケミカル株式会社製ＢＭ−１０３ＮＡ）を用い、熱可塑性樹脂及び希釈用熱可塑性樹脂としてＭ２が６３であるポリプロピレン樹脂（日本ポリプロ株式会社製ノバテックＭＡ１Ｂ）を用い、ポリプロピレン樹脂に無機系抗菌剤を１０％配合し、上述した方法で、Ｍ１がそれぞれ５４個（比較例１），１４０個（比較例２），２１０個（実施例１），４２０個（実施例２），５５０個（実施例３），１５００個（比較例３）である６種類の抗菌剤含有熱可塑性樹脂組成物を作成した。尚、Ｍ１が５４個，１４０個，２１０個，４２０個であるものは、高速カッターで切断することで作成され、Ｍ１が５５０個，１５００個であるものは、凍結粉砕した後、メッシュで篩って選り分けることで得られた。混合はアズワン株式会社製のポットミルＰＭ−００１を用い、混練は池貝株式会社製のＰＣＭ−３０押出機を用いて行った。 A polypropylene resin having M2 of 63 as a thermoplastic resin and a dilution thermoplastic resin using silver phosphate / borate glass (BM-103NA manufactured by Fuji Chemical Co., Ltd.) having an average particle size of 10 μm or less as an inorganic antibacterial agent (Novatech MA1B manufactured by Nippon Polypro Co., Ltd.), 10% of an inorganic antibacterial agent is blended in polypropylene resin, and M1 is 54 (Comparative Example 1), 140 (Comparative Example 2), 210, respectively, by the method described above. Six types of thermoplastic resin compositions containing antibacterial agents were prepared (Example 1), 420 (Example 2), 550 (Example 3), and 1500 (Comparative Example 3). In addition, those with M1, 54, 140, 210, 420 are prepared by cutting with a high-speed cutter, and those with M1, 550, 1500 are sieved with a mesh after freeze pulverization. It was obtained by sorting. Mixing was performed using a pot mill PM-001 manufactured by ASONE Co., Ltd., and kneading was performed using a PCM-30 extruder manufactured by Ikekai Co., Ltd.
次に、抗菌剤含有熱可塑性樹脂組成物の量が全体の３重量％となるように配合し、上述した方法で、各抗菌剤含有熱可塑性樹脂組成物の内の１つを含む５０×５０×２ｍｍのプレートをそれぞれ３０ショットずつ作成した。尚、射出成型は、日精樹脂工業株式会社製のＰＳ４０Ｅ５ＡＮＥを用いて行った。 Next, it mix | blends so that the quantity of an antibacterial agent containing thermoplastic resin composition may be 3 weight% of the whole, and is 50x50 containing one of each antibacterial agent containing thermoplastic resin composition by the method mentioned above. 30 shots of each 2 mm plate were prepared. The injection molding was performed using PS40E5ANE made by Nissei Plastic Industry Co., Ltd.
そして、各プレート中の抗菌剤の量をイーアンドエム株式会社製の蛍光Ｘ線分析装置ＥＤＦ０５Ｒ型を用いて、各プレート中の銀量を測定することにより定量し、３０枚のプレート間における抗菌剤量のバラツキは、標準偏差を算出することにより評価した。 Then, the amount of antibacterial agent in each plate is quantified by measuring the amount of silver in each plate using a fluorescent X-ray analyzer EDF05R manufactured by E & M Co., Ltd. The variation in dosage was evaluated by calculating the standard deviation.
図１は、その結果をまとめた表であり、図２は、Ｍ１と標準偏差との関係を示したグラフである。図１及び図２からわかるように、Ｍ１がおよそ２００個〜８００個の範囲において、標準偏差が非常に小さい、すなわち、プレート間における抗菌剤量のバラツキが非常に小さくなっており、５４個、１４０個及び１５００個の場合には、標準偏差が非常に大きくなっている。このように、希釈用樹脂ペレットのＭ２を一定とした際に、抗菌剤マスターバッチペレットのＭ１と標準偏差との間には予測困難な非線形の関係があり、Ｍ１が所定の範囲内において、抗菌剤量のバラツキが非常に小さくなることがわかった。 FIG. 1 is a table summarizing the results, and FIG. 2 is a graph showing the relationship between M1 and standard deviation. As can be seen from FIG. 1 and FIG. 2, when M1 is in the range of about 200 to 800, the standard deviation is very small, that is, the variation in the amount of antibacterial agent between the plates is very small, 54, In the case of 140 pieces and 1500 pieces, the standard deviation is very large. As described above, when M2 of the resin pellet for dilution is constant, there is a non-linear relationship that is difficult to predict between M1 of the antibacterial agent master batch pellet and the standard deviation. It was found that the variation in the dosage was very small.
以上のように、定量供給装置を用いずに熱可塑性樹脂製品を製造する際に、無機系抗菌剤と熱可塑性樹脂とを含み、Ｍ１が２００個以上８００個以下となるサイズの抗菌剤含有熱可塑性樹脂組成物と、Ｍ２が３０個以上１００個以下となるサイズの希釈用熱可塑性樹脂とを用いるようにすることで、得られる熱可塑性樹脂製品間における無機系抗菌剤のバラツキを抑えることができる。 As described above, when manufacturing a thermoplastic resin product without using a quantitative supply device, the antibacterial agent-containing heat having a size that includes an inorganic antibacterial agent and a thermoplastic resin and M1 is 200 or more and 800 or less. By using a thermoplastic resin composition and a dilution thermoplastic resin having a size of M2 of 30 or more and 100 or less, variation in inorganic antibacterial agents among the obtained thermoplastic resin products can be suppressed. it can.
Claims (6)
熱可塑性樹脂と無機系抗菌剤とを含み、
その１ｇ当たりの個数（Ｍ１）が２００個以上８００個以下であることを特徴とする抗菌剤含有熱可塑性樹脂組成物。 When producing a thermoplastic resin product containing an inorganic antibacterial agent without using a quantitative supply device, the number (M2) per gram (M2) is mixed and melt-kneaded with a dilution thermoplastic resin having a number of 30 to 100. A resin composition comprising:
Including a thermoplastic resin and an inorganic antibacterial agent,
The antibacterial-containing thermoplastic resin composition, wherein the number (M1) per gram is 200 or more and 800 or less.
熱可塑性樹脂と無機系抗菌剤とを混合して溶融混練した後、切断又は粉砕して抗菌剤含有熱可塑性樹脂組成物を製造する工程と、
希釈用熱可塑性樹脂と前記抗菌剤含有熱可塑性樹脂組成物とを混合した後、溶融混練し成形して抗菌剤含有熱可塑性樹脂製品を製造する工程とを含み、
前記抗菌剤含有熱可塑性樹脂組成物は、その１ｇ当たりの個数（Ｍ１）が２００個以上８００個以下であり、
前記希釈用熱可塑性樹脂は、その１ｇ当たりの個数（Ｍ２）が３０個以上１００個以下であることを特徴とする抗菌剤含有熱可塑性樹脂製品の製造方法。 A method for producing a thermoplastic resin product containing an inorganic antibacterial agent without using a quantitative supply device,
A step of mixing a thermoplastic resin and an inorganic antibacterial agent and melt-kneading, then cutting or grinding to produce an antibacterial agent-containing thermoplastic resin composition;
Mixing the thermoplastic resin for dilution and the antibacterial agent-containing thermoplastic resin composition, and then melt-kneading and molding to produce an antibacterial agent-containing thermoplastic resin product,
The antibacterial agent-containing thermoplastic resin composition has a number per 1 g (M1) of 200 or more and 800 or less,
The method for producing an antibacterial agent-containing thermoplastic resin product, wherein the dilution thermoplastic resin has a number (M2) per gram of 30 to 100.
6. The method for producing an antibacterial agent-containing thermoplastic resin product according to claim 4 or 5, wherein the inorganic antibacterial agent contains at least one of silver, copper, and zinc.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372734A (en) * | 1986-09-12 | 1988-04-02 | Mitsubishi Cable Ind Ltd | Masterbatch |
| JPH0892006A (en) * | 1994-09-19 | 1996-04-09 | Showa Denko Kk | Biodegradable resin molded product containing biologically active substance |
| WO2003033596A1 (en) * | 2001-10-17 | 2003-04-24 | Kabushiki Kaisha Sangi | Anti-bacterial composite particles and anti-bacterial resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372734A (en) * | 1986-09-12 | 1988-04-02 | Mitsubishi Cable Ind Ltd | Masterbatch |
| JPH0892006A (en) * | 1994-09-19 | 1996-04-09 | Showa Denko Kk | Biodegradable resin molded product containing biologically active substance |
| WO2003033596A1 (en) * | 2001-10-17 | 2003-04-24 | Kabushiki Kaisha Sangi | Anti-bacterial composite particles and anti-bacterial resin composition |
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