JPS5837033B2 - How to spread fine powder - Google Patents

Description

【発明の詳細な説明】 本発明は微粉体の散布方法、さらに詳しくは、多孔質基
体上に微粉体を均一に散布する方法、ことに、粉末散布
法による熱接着性衣料芯地の製造に際し、芯地基体の表
面に熱接着剤微粉末を均一６こ散布するのに有用な方法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dispersing fine powder, more specifically, a method for uniformly dispersing fine powder on a porous substrate, and in particular, a method for producing thermal adhesive clothing interlining by the powder dispersion method. , relates to a method useful for uniformly dispersing fine thermal adhesive powder onto the surface of an interlining substrate.

近年、衣料芯地の表面に熱接着剤を付着させた熱接着芯
地が市販されており、これは、衣料芯地を熱プレスする
のみで芯地と表地を接着でき、所望の製品が得られるの
で非常に便利なものである。In recent years, thermal adhesive interlining with a thermal adhesive attached to the surface of clothing interlining has become commercially available.This allows the interlining and outer material to be bonded together simply by hot pressing the clothing interlining, allowing the desired product to be obtained. It is very convenient because it can be used.

熱接着性芯地は、芯地基体の表面に、熱接着剤粉末を散
布する粉末散布法、接着剤を点状にプリント点状するプ
リント法、または、熱接着性網状体を接合する熱接着性
網状体接合法により、熱接着剤を付着させて製造される
。Thermoadhesive interlining can be produced using a powder scattering method in which thermal adhesive powder is sprinkled on the surface of the interlining base, a printing method in which adhesive is printed in dots, or a thermal bonding method in which a thermoadhesive network is bonded. It is manufactured by attaching a thermal adhesive using a mesh bonding method.

しかし、いずれの場合も、衣料表地の均一かつ完全な接
着加工を行おうとすれば、表地と接着剤の接着面積を大
きくする必要があり、そのため芯地基体表面に付着する
接着剤粒もしくは塊を比較的大きくすれば、薄い表地を
用いる場合には、接着加工時に接着剤が滲出したり、接
着後の表地に接着剤の付着部に対応する凹凸を生じ、外
観、感触をそこなう欠点がある。However, in any case, in order to achieve uniform and complete adhesion of the outer clothing material, it is necessary to increase the bonding area between the outer material and the adhesive, which reduces the amount of adhesive particles or lumps that adhere to the surface of the interlining base. If the size is relatively large, if a thin outer material is used, the adhesive may ooze out during the bonding process, and the outer material after bonding will have irregularities corresponding to the areas where the adhesive has been applied, which may impair the appearance and feel.

粉末散布法において、熱接着剤の微粉末を芯地基体の表
地に均一に散布できれば、かかる欠点を解消できるので
あるが、従来、微粉体を芯地基体のような多孔質基体上
に均一に散布することが非常に困難であり、また、散布
できても粒度が１００メッシュより細い粉末を用いると
芯地組織中に該微粉末がはいり込み、これらの接着剤は
表地との接着に寄与できず、接着力低下をきたし、また
、風合を硬化させる問題が生ずる。In the powder dispersion method, if fine powder of thermal adhesive can be uniformly spread over the outer surface of the interlining base, this drawback can be overcome. It is very difficult to spread, and even if it can be spread, if powders with a particle size smaller than 100 mesh are used, the fine powders will get into the interlining structure, and these adhesives will not be able to contribute to adhesion to the outer material. This results in a decrease in adhesive strength and a hardening of the texture.

本発明者は、かかる欠点、問題なしに、粉末散布法によ
って良好な品質の熱接着性芯地を得るため、熱接着剤微
粉亦を芯地基体上に均一に散布する方法について鋭意研
究した結果、該微粉末の分散液を起泡させ、この泡末を
基体上に塗布することにより目的を達戒できることを見
出し、本発明を完或するにいたった。In order to obtain a thermally adhesive interlining of good quality by the powder scattering method without such drawbacks and problems, the present inventor has conducted extensive research on a method for uniformly dispersing thermal adhesive fine powder onto an interlining substrate. They discovered that the object could be achieved by foaming a dispersion of the fine powder and coating the foam on a substrate, and completed the present invention.

すなわち、本発明は、起泡剤を含む熱接着剤微粉末の水
性分散液を起泡させ、この泡沫を衣料芯地基体上に塗布
し、ついで乾燥して破泡することを特徴とする該熱接着
剤の散布方法を提供するものであり、本発明の方広は熱
接着性芯地製造の場合に限らず、他の同様な多孔質基体
上に微粉体を均一に散布する場合にも適用でき、これら
の方法も本発明範囲のものである。That is, the present invention is characterized in that an aqueous dispersion of thermal adhesive fine powder containing a foaming agent is foamed, the foam is applied onto a clothing interlining base, and then the foam is broken by drying. The present invention provides a method for dispersing thermal adhesive, and the method of the present invention is applicable not only to the production of thermal adhesive interlining, but also to the uniform dispersion of fine powder onto other similar porous substrates. These methods are also within the scope of the present invention.

しかして、本発明の方法により、衣料芯地基体上に熱接
着剤微粉末を散布するには、該微粉体の水性分散液を調
製し、所望の泡倍率に起泡させ、芯地基体上に所望の厚
さで塗布し、ついで乾燥して破泡すればよく、これによ
り、該微粉末を芯地基体上に均一に散布でき、また、該
微粉末は芯地基体組織中にはいり込むことがないので、
得られた芯地では接着強度の低下や、外観、感触をそこ
なうなどの欠点、問題がなく、しかも、該微粉末の分散
濃度、泡倍率、塗布厚さを調節することにより散布量を
任意に、正確に調整できる。According to the method of the present invention, in order to spread thermal adhesive fine powder onto a garment interlining substrate, an aqueous dispersion of the fine powder is prepared, foamed to a desired foam ratio, and then applied onto the interlining substrate. It is sufficient to apply the powder to a desired thickness and then dry it to break the bubbles, thereby allowing the fine powder to be uniformly spread over the interlining substrate, and also allowing the fine powder to penetrate into the interlining substrate structure. Because it never happens,
The obtained interlining does not have any disadvantages such as a decrease in adhesive strength or damage to the appearance or feel, and furthermore, by adjusting the dispersion concentration, foam magnification, and coating thickness of the fine powder, the amount of dispersion can be adjusted as desired. , can be adjusted accurately.

本発明で用いられる芯地基体としては、通常用いられる
芯地基体でよく、例えば、不織布、織物などが挙げられ
る。The interlining substrate used in the present invention may be any commonly used interlining substrate, such as nonwoven fabrics and woven fabrics.

用いる熱接着剤としてはポリエチレン樹脂、エチレン酢
酸ビニル共重合体、ポリアミド系樹脂、ポリ塩化ビニル
樹脂、塩化ビニル酢酸ビニル共重合体、フェノール系樹
脂などの疎水性熱接着性樹脂微粉末が挙げられ、これに
は該樹脂を繊維状に成形した後、超短繊維状にカットし
たものも包含する。Examples of the thermal adhesive used include hydrophobic thermal adhesive resin fine powder such as polyethylene resin, ethylene vinyl acetate copolymer, polyamide resin, polyvinyl chloride resin, vinyl chloride vinyl acetate copolymer, and phenolic resin. This includes molding the resin into fibers and then cutting them into ultrashort fibers.

本発明の方法は粒度が２０メッシュより細かければ適用
することができ、特に９０メッシュより細い微粉末の場
合には非常に有効である。The method of the present invention can be applied when the particle size is finer than 20 mesh, and is particularly effective in the case of fine powder finer than 90 mesh.

これらは所望の散布量に合わせて分散液中に濃度６０％
（重量φ、以下同じ）以下で分散させる。These are added to the dispersion liquid at a concentration of 60% to match the desired spray amount.
(weight φ, the same applies hereinafter) or less.

この濃度を越えると界面活性剤水溶液中に微粉末が充分
分散できず、微粉末の凝集が発生して接着芯地の表面に
塊りがでるような問題を生じる。If this concentration is exceeded, the fine powder cannot be sufficiently dispersed in the aqueous surfactant solution, causing problems such as agglomeration of the fine powder and the appearance of lumps on the surface of the adhesive interlining.

本発明方法で用いる熱接着剤微粉末の水性分散液は起泡
剤を含む。The aqueous dispersion of thermal adhesive fine powder used in the method of the invention contains a foaming agent.

用いる起泡剤は通常用いられるものでよく、アルキルベ
ンゼン系アニオン界面活性剤、高級脂肪酸系アニオン界
面活性剤などのような各種界面活性剤および／またはカ
ルボキシメチルセルローズ、ポリアクリル酸ナトリウム
、ポリアクリルアミドなどの水性高分子物質なでのよう
な増粘剤が挙げられ、これらの添加量は所望の起泡状態
に合わせて適宜選択できるが、通常、０．０５〜２係の
濃度となるように添加するのが好ましい。The foaming agent used may be one commonly used, such as various surfactants such as alkylbenzene-based anionic surfactants, higher fatty acid-based anionic surfactants, etc., and/or foaming agents such as carboxymethyl cellulose, sodium polyacrylate, and polyacrylamide. Examples include thickeners such as aqueous polymeric substances, and the amount of these added can be selected as appropriate depending on the desired foaming state, but they are usually added to a concentration of 0.05 to 2 parts. is preferable.

該分散液には、所望により、さらに分散剤、泡安定剤、
粒子仮接着補助剤などの他の添加剤を添加してもよい。If desired, the dispersion further contains a dispersant, a foam stabilizer,
Other additives such as particle temporary adhesion aids may also be added.

分散剤としては前記のような界面活性剤、泡安定剤とし
ては前記のような界面活性剤および／または増粘剤が挙
げられる。Examples of the dispersant include the above-mentioned surfactants, and examples of the foam stabilizer include the above-mentioned surfactants and/or thickeners.

また、粒子仮接着補助剤は熱接着剤微粉末が芯地基体に
溶融付着されるまでの間、仮に付着させる作用をするも
ので、アクリル樹脂、エチレン酢酸ビニル共重合体など
を水に乳化させたエマルジョンまたはカルボキシメチル
セルロース、ポリアクリル酸ナトリウム、ポリアクリル
アミド、澱粉、カゼインなどのような水溶性高分子物質
が包含される。In addition, particle temporary adhesion aids act to temporarily adhere fine thermal adhesive powder until it is melted and adhered to the interlining substrate, and it emulsifies acrylic resin, ethylene vinyl acetate copolymer, etc. in water. Emulsions or water-soluble polymeric materials such as carboxymethylcellulose, sodium polyacrylate, polyacrylamide, starch, casein, and the like are included.

これらの添加剤も、その目的に合わせて適宜の濃度とな
るように添加される。These additives are also added at appropriate concentrations depending on the purpose.

本発明方法における分散液の起泡は、泡倍率３〜１５に
することが好ましい。The foaming of the dispersion in the method of the present invention is preferably carried out at a foam magnification of 3 to 15.

泡倍率は該微粉末の分散濃度および泡沫の塗布厚さと共
に散布状態を調節する因子であり、例えば、散布量を多
くする場合は、分散濃度をあげるか、または、発泡させ
る液量を多くし、泡倍率をさげ、スリットコーティング
を行なうこととする。The foam magnification is a factor that adjusts the dispersion condition together with the dispersion concentration of the fine powder and the coating thickness of the foam. For example, when increasing the dispersion amount, the dispersion concentration should be increased or the amount of foamed liquid should be increased. , the foam magnification will be lowered and slit coating will be performed.

本発明方法における分散液の起泡、泡沫の塗布および破
泡のための乾燥方法は特に限定するものではなく、例え
ば、通常、フォームラバーエ業などで用いられるオーク
スミキサーなどにより起泡させ、この泡沫をスリットコ
ーターなどを用いて所望の厚さで塗布し、熱風乾燥、紫
外線乾燥などにより破泡する。In the method of the present invention, the drying method for foaming the dispersion, applying foam, and breaking the foam is not particularly limited. The foam is applied to the desired thickness using a slit coater or the like, and the foam is broken by drying with hot air or ultraviolet rays.

さらに、本発明は、起泡剤を含む熱接着剤微粉末の水性
分散液を起泡させ、この泡沫を衣料芯地基体上に塗布し
、ついで乾燥して破泡した後、熱溶融処理することを特
徴とする熱接着性芯地の製造方法を提供する。Furthermore, the present invention foams an aqueous dispersion of thermal adhesive fine powder containing a foaming agent, applies this foam onto a clothing interlining substrate, and then dries it to break the foam, followed by hot melt treatment. Provided is a method for manufacturing a heat-adhesive interlining characterized by the following.

熱溶融処理温度は用いる熱接着剤の溶融温度であり、通
常１３０〜１６０℃である。The hot melt treatment temperature is the melting temperature of the thermal adhesive used, and is usually 130 to 160°C.

得られた熱接着性芯地は熱接着剤の微粉末が芯地組織中
にはいり込むことなく表面上にきわめて均一に付着して
おり、薄い衣料表地をこれ６こ接着させても外観、感触
をそこなうことなく、また、接着強度も充分である。The resulting heat-adhesive interlining has a fine powder of heat-adhesive that adheres extremely uniformly to the surface without penetrating into the interlining structure, and even when six pieces of thin clothing outer material are bonded together, the appearance and feel remain the same. In addition, the adhesive strength is sufficient.

本発明の微粉体散分方法は、熱接着性芯地の製造にとく
６こ有利に用いられるが、これに限らず、ボンデットフ
ァブリツクの製造、一般シート状物のはり合せ方法など
に種々利用することができる。The fine powder dispersion method of the present invention can be particularly advantageously used in the production of heat-adhesive interlining, but is not limited to this, and can be used in various applications such as the production of bonded fabrics and the method of bonding general sheet materials. can be used.

つぎに実施例を挙げ、本発明の微粉体の散布方法および
熱接着性芯地の製造法を説明するが、これらに限定され
るものではない、 実施例 １ 分散液処方 重量φ共重合型
ポリアミド樹脂（溶融温度 １２０℃、全量の８０φが１００〜 １５０メッシュの粒度分布をもち、 従来の方法では均一な散布が困難） ２０アル
キルベンセ゛ンスルホン酸系アニ オン界面活性剤（１０％水溶液） １水
７９以上の
成分を攪拌混合して分散液を調製し、ミキサーを用いて
分散液の８倍の体積（泡倍率８）に起泡させ、この泡沫
を不織布芯地基体（ダイニツク）■製、バネロン＃２９
２５０）の上に厚さ１間で塗邪、直ちにｉｏｏ℃で５分
間熱風乾燥して破泡し、ついで１３０℃の熱風乾燥機中
で３分間熱溶融処理して熱接着性芯地を得た。Next, a method for dispersing fine powder and a method for producing a heat-adhesive interlining according to the present invention will be described with reference to Examples, but the present invention is not limited thereto.Example 1 Dispersion formulation Weight φ Copolymerized polyamide Resin (melting temperature 120℃, total amount of 80φ has a particle size distribution of 100 to 150 mesh, and it is difficult to spray uniformly with conventional methods) 20 Alkylbenzene sulfonic acid-based anionic surfactant (10% aqueous solution) 1 water
Prepare a dispersion liquid by stirring and mixing 79 or more ingredients, foam it to 8 times the volume of the dispersion liquid (foam ratio 8) using a mixer, and add this foam to a nonwoven interlining base (made by Dainik), Ballon #29
250) to a thickness of 1 cm, immediately dried with hot air at IOO°C for 5 minutes to break the bubbles, and then heat-melted in a hot air dryer at 130°C for 3 minutes to obtain a heat-adhesive interlining. Ta.

得られた芯地は接着剤が約２５Ｅｌ／ｒｒ？の付着量で
きわめて均一に付着した良好なものであった。The adhesive content of the obtained interlining is approximately 25El/rr? The coating amount was extremely uniform and good.

実施例 ２ 分散液処方 重量φエチレン
酢酸ビニル共重合体（溶融 温度１１０℃、全量の８０％が１００ 〜２００メッシュの粒度分布をもち、 従来の方法では均一な散布が困難）１５ アルキルベンゼ゛ンスルホン酸系アニオ ン界面活性剤（１０％水溶液） １エチレ
ン酢酸ビニル共重合体エマルジ ョン（固形分４０％） ３水
８１前記実
施例１と同様にして、泡倍率７に起泡させ１ｍｍの厚さ
で黒色綿織物芯地基体上に塗布、破泡し、熱溶融処理し
、接着剤が約２０ｇ／一の付着量できわめて均一に付着
した良好な熱接着性芯地を得た。Example 2 Dispersion formulation Weight φ Ethylene vinyl acetate copolymer (melting temperature 110°C, 80% of the total amount has a particle size distribution of 100 to 200 mesh, and it is difficult to uniformly disperse using conventional methods) 15 Alkylbenzene sulfone Acid-based anionic surfactant (10% aqueous solution) 1 Ethylene vinyl acetate copolymer emulsion (solid content 40%) 3 Water
81 In the same manner as in Example 1, the foam was foamed to a foam magnification of 7, applied to a thickness of 1 mm on a black cotton fabric interlining substrate, the foam was broken, and heat melted, and the amount of adhesive adhered was about 20 g/1. A good heat-adhesive interlining with very uniform adhesion was obtained.

Claims (1)

【特許請求の範囲】 １ 起泡剤を含む微粉体の水性分散液を起泡させ、この
泡沫を多孔質基体上に塗布し、ついで乾燥して破泡する
ことを特徴とする微粉体の散布方法。 ２ 該微粉体が熱接着剤微粉末および該多孔質基体が衣
料芯地基体である特許請求の範囲第１項記載の方法。 ３ 該微粉体が２０メッシュより細かい特許請求の範囲
第１項または第２項記載の方法。 ４ 該微粉体が９０メッシュより細かい特許請求の範囲
第３項記載の方法。 ５ 該微粉体が水性分散液中に６１重量係以下の濃度で
存在する特許請求の範囲第１項〜第４項いずれかに記載
の方法。 ６ 泡倍率３〜１５に起泡させる特許請求の範囲第１項
〜第５項いずれかに記載の方法。 ７ 該接着剤微粉末が、ポリエチレン樹脂、エチレン酢
酸ビニル共重合体、ポリアミド系樹脂、ポリ塩化ビニル
樹脂、塩化ビニル酢酸ビニル共重合体およびフェノール
系樹脂からなる群から選ばれる特許請求の範囲第２項記
載の方法。 ８ 起泡剤を含む熱接着剤微粉末の水性分散液を起泡さ
せ、この泡沫を衣料芯地基体上に塗布し、ついで破泡し
、熱熔融処理をすることを特徴とするる熱接着性芯地の
製造法。[Claims] 1. Dispersion of fine powder, which is characterized by foaming an aqueous dispersion of fine powder containing a foaming agent, applying the foam onto a porous substrate, and then drying to break the foam. Method. 2. The method according to claim 1, wherein the fine powder is a fine thermal adhesive powder and the porous substrate is a clothing interlining substrate. 3. The method according to claim 1 or 2, wherein the fine powder is finer than 20 mesh. 4. The method according to claim 3, wherein the fine powder is finer than 90 mesh. 5. The method according to any one of claims 1 to 4, wherein the fine powder is present in the aqueous dispersion at a concentration of 61% by weight or less. 6. The method according to any one of claims 1 to 5, wherein the foam is foamed to a foam magnification of 3 to 15. 7. Claim 2, wherein the adhesive fine powder is selected from the group consisting of polyethylene resin, ethylene vinyl acetate copolymer, polyamide resin, polyvinyl chloride resin, vinyl chloride vinyl acetate copolymer, and phenolic resin. The method described in section. 8. Thermal adhesive, which is characterized by foaming an aqueous dispersion of thermal adhesive fine powder containing a foaming agent, applying this foam onto a clothing interlining substrate, then breaking the foam, and subjecting it to a hot melting process. Manufacturing method for interlining.