JP2559902B2 - Method for producing heat-sealable breathable packaging material - Google Patents
Method for producing heat-sealable breathable packaging materialInfo
- Publication number
- JP2559902B2 JP2559902B2 JP2309934A JP30993490A JP2559902B2 JP 2559902 B2 JP2559902 B2 JP 2559902B2 JP 2309934 A JP2309934 A JP 2309934A JP 30993490 A JP30993490 A JP 30993490A JP 2559902 B2 JP2559902 B2 JP 2559902B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin powder
- base material
- heat
- roll
- 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.)
- Expired - Fee Related
Links
- 239000005022 packaging material Substances 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 44
- 229920003002 synthetic resin Polymers 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 34
- 230000035699 permeability Effects 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000000123 paper Substances 0.000 description 13
- -1 polyethylene Polymers 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、ヒートシール性及び通気性が要求される包
装材料の製造方法に関するものである。通気性を要求さ
れる包装材料とは、例えば乾燥剤、脱臭剤、芳香剤、各
種ガスの吸収剤の袋素材等に供するものである。TECHNICAL FIELD The present invention relates to a method for producing a packaging material that requires heat sealability and air permeability. The packaging material required to have air permeability is, for example, used as a bag material for a desiccant, a deodorant, an fragrance, an absorbent for various gases, and the like.
（従来の技術） 従来、ヒートシール性及び通気性を有した包装材料を
製造するには、以下のような方法が用いられてきた。(Prior Art) Conventionally, the following method has been used to produce a packaging material having heat sealability and air permeability.
例えば耐熱性、通気性を有する紙、不織布等の基材に
ポリエチレン等のヒートシール性を有する合成樹脂を積
層した後、針又はピン状の突起を表面に有した加熱ロー
ルを用いて基材上の合成樹脂を部分的に溶融して通気孔
を穿設する方法（特公昭46−31476号公報）、又あらか
じめ針又はピン状の突起を表面に有する加熱ロールを用
いて有孔合成樹脂フィルムを製造し、これを前記紙、不
織布等の基材に熱圧着して積層する方法（特公昭47−65
18号公報）がある。For example, after laminating a heat-sealing synthetic resin such as polyethylene on a substrate such as heat-resistant and air-permeable paper or non-woven fabric, use a heating roll having needles or pin-shaped protrusions on the surface of the substrate. A method of partially melting the synthetic resin to form a vent hole (Japanese Patent Publication No. 46-31476), or a perforated synthetic resin film using a heating roll having needles or pin-shaped protrusions on its surface in advance. A method of manufacturing and laminating it by thermocompression bonding to a base material such as paper or non-woven fabric (Japanese Patent Publication No. 47-65).
No. 18).
（発明が解決しようとする課題） しかしながらこれらの製造方法においては、フィルム
の積層と通気孔の穿設という２つの工程を必要とするだ
けでなく、包装材料の透気度を調整する場合には、前記
加熱ロール表面上の突起の大きさ又は数を変えて、合成
樹脂フィルムに穿設された通気孔の面積又は数を変えて
いたため、包装材料の用途によって各種の加熱ロールを
所持する必要があるので無駄が生じるという問題があっ
た。(Problems to be Solved by the Invention) However, in these manufacturing methods, not only two steps of laminating the film and forming the ventilation holes are required, but also when adjusting the air permeability of the packaging material. The size or number of the protrusions on the surface of the heating roll is changed to change the area or number of the vent holes formed in the synthetic resin film, so that it is necessary to carry various heating rolls depending on the use of the packaging material. Therefore, there is a problem that waste occurs.
（課題を解決するための手段） 本発明は上記課題を解決するため、散布される合成樹
脂粉末の融点以上の耐熱性を有し、気体透過性の良好な
る通気性基材、例えば紙、不織布等の上、粒度が20〜20
0メッシュの合成樹脂粉末を散布量調整可能な散布装置
を用いて散布し、表面の剥離性が良好で表面温度が合成
樹脂粉末の融点以上に加熱されたヒートロールに、前記
通気性基材の合成樹脂粉末散布面を接するようにしてこ
のヒートロールを通過させ、合成樹脂粉末を通気性基材
に溶融、圧着させた後、冷却部に前記通気性基材を通過
させることを特徴とする。(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention has a heat resistance not lower than the melting point of the synthetic resin powder to be sprayed, and a gas permeable substrate having good gas permeability, such as paper and nonwoven fabric. Etc., the grain size is 20 to 20
A 0-mesh synthetic resin powder was sprayed using a spraying device capable of adjusting the spraying amount, and a heat roll having good surface releasability and a surface temperature heated to a temperature equal to or higher than the melting point of the synthetic resin powder. This heat roll is passed through so that the synthetic resin powder-dispersed surface is in contact, the synthetic resin powder is melted and pressure-bonded to the air-permeable base material, and then the air-permeable base material is passed through the cooling part.
ここで気体透過性の良好なる紙、不織布等の通気性基
材とは、JIS P 8117（紙及び板紙の透気度試験法）にて
規定される透気度が100秒/100cc以下であり、パルプ、
レーヨン、ポリエチレンテレフタレート、ポリアミド、
ポリプロピレン、ポリエチレン等から選ばれた１種また
は２種以上の材質で構成されているものである。基材の
上に散布される合成樹脂粉末はポリエチレン、ポリプロ
ピレン、エチレン酢酸ビニール共重合体等のヒートシー
ル性を有する合成樹脂で、その粒度は20〜200メッシュ
の範囲から選ばれる。樹脂粉末の粒度が20メッシュ以上
の大きさであれば、樹脂とヒートロールと接触する表面
積が小さいため接触時間内に完全に溶融ができず、基材
に固着しないだけでなく弾性ロールを用いてプレスする
場合に基材に傷を付けやすい。又樹脂粉末が200メッシ
ュ以下の小さい粒度のものであれば、粉末粒子の重量が
軽いために、散布時に発生する静電気の影響を受け、樹
脂粉末が舞い上がって粉末粒子が互いに結合してしまう
ので、散布を均一に行うことができないだけでなく、基
材が薄い場合には基材の細孔を粉末粒子が透過してしま
うため、均一に散布することができない。Air-permeable base materials such as paper and non-woven fabric that have good gas permeability here have an air permeability of 100 seconds / 100 cc or less specified in JIS P 8117 (Air permeability test method for paper and paperboard). ,pulp,
Rayon, polyethylene terephthalate, polyamide,
It is composed of one or more materials selected from polypropylene, polyethylene and the like. The synthetic resin powder dispersed on the substrate is a synthetic resin having heat-sealing property such as polyethylene, polypropylene and ethylene vinyl acetate copolymer, and its particle size is selected from the range of 20 to 200 mesh. If the particle size of the resin powder is 20 mesh or more, because the surface area of the resin that contacts the heat roll is small, it cannot be completely melted within the contact time, and it does not stick to the base material, as well as using an elastic roll. When pressed, the base material is easily scratched. If the resin powder has a small particle size of 200 mesh or less, since the weight of the powder particles is light, the influence of the static electricity generated at the time of spraying causes the resin powder to soar and the powder particles to bond with each other. Not only can the spraying not be performed uniformly, but if the base material is thin, the powder particles will pass through the pores of the base material, so that the spraying cannot be performed uniformly.
又ヒートロールの表面には剥離性のあることが必要で
あるが、このために剥離性のある樹脂を被覆すると好適
である。そして剥離性のある樹脂とは、凝集エネルギー
が、50cal/cm3以下のものが好ましく、代表的材質とし
てシリコン、ポリ四フッ化エチレンがある。Further, the surface of the heat roll needs to have releasability, but for this reason, it is preferable to coat it with a releasable resin. The releasable resin preferably has a cohesive energy of 50 cal / cm 3 or less, and typical materials include silicon and polytetrafluoroethylene.
（作用） 合成樹脂粉末は、散布量調整可能な散布装置によって
通気性基材上に散布され、合成樹脂の融点以上に加熱さ
れたヒートロールと接触することにより通気性基材の上
で溶融する。溶融した合成樹脂粉末は通気性基材に圧着
されるが、ヒートロール表面は剥離性を有するため、溶
融した合成樹脂が通気性基材からヒートロール表面に転
移することはない。合成樹脂粉末の圧着後、通気性基材
が冷却部を通過すると、合成樹脂粉末が通気性基材上で
斑状に均一分布されて固化し、ヒートシール性を持った
通気包装材料が完成する。合成樹脂が固着した部分は通
気性がなく、合成樹脂が固着していない部分は通気性が
確保されることになり、又散布装置の合成樹脂粉末散布
量を調整することにより、任意の透気度を有したヒート
シール性通気包装材料を得ることができる。(Function) The synthetic resin powder is sprayed on the breathable base material by a spraying device capable of adjusting the spraying amount, and melts on the breathable base material by contacting with a heat roll heated above the melting point of the synthetic resin. . The molten synthetic resin powder is pressure-bonded to the air-permeable base material, but since the heat roll surface has releasability, the molten synthetic resin does not transfer from the air-permeable base material to the heat roll surface. After the synthetic resin powder is pressure bonded, when the breathable base material passes through the cooling part, the synthetic resin powder is uniformly distributed and solidified on the breathable base material, and a breathable packaging material having heat sealability is completed. The part where the synthetic resin adheres has no air permeability, and the part where the synthetic resin does not adhere has air permeability. Also, by adjusting the amount of the synthetic resin powder sprayed by the spraying device, any air permeability can be obtained. It is possible to obtain a heat-sealable breathable packaging material having a certain degree.
（実施例） 図は本発明の一実施例の工程を示している。(Example) The figure has shown the process of one Example of this invention.
通気性基材１は繰出しロール11から繰り出される。合
成樹脂粉末５を散布する散布装置２は直径120mmの回転
ロール４をホッパー３の下に設けており、回転制御装置
６によって回転ロール４の回転数を制御している。温度
180℃、直径800mmのヒートロール７はポリ四フッ化エチ
レン層８を表面に被覆しており、剥離性を有している。
９は溶融した合成樹脂粉末５を通気性基材１上に圧着す
る直径150mmのシリコンゴム製の弾性ロールである。14
は前記溶融した合成樹脂粉末５を固化させる冷却ロール
10、10を備えた冷却部であり、合成樹脂粉末５固着後の
通気性基材１は、ガイドロール12、12に導かれ巻取りロ
ール13に巻き取られる。The air permeable base material 1 is delivered from the delivery roll 11. A sprinkling device 2 for sprinkling the synthetic resin powder 5 is provided with a rotating roll 4 having a diameter of 120 mm under the hopper 3, and a rotation control device 6 controls the rotation speed of the rotating roll 4. temperature
The surface of the heat roll 7 having a diameter of 800 mm and a temperature of 180 ° C. is covered with the polytetrafluoroethylene layer 8 and has peeling property.
Reference numeral 9 is an elastic roll made of silicon rubber having a diameter of 150 mm for pressing the molten synthetic resin powder 5 onto the breathable base material 1. 14
Is a cooling roll for solidifying the molten synthetic resin powder 5
The air-permeable base material 1 after the fixing of the synthetic resin powder 5 is a cooling unit including 10 and 10, and is guided to the guide rolls 12 and 12 and wound up by the winding roll 13.
上記装置において、目付43g/m2、透気度15秒/100ccの
パルプ質からなる紙基材１は、繰出しロール11より加工
速度40m/分にて繰り出される。一方回転ロール４の回転
数が15回／分に調節された散布装置２からは、融点110
℃粒度60〜80メッシュのポリエチレンの合成樹脂粉末５
が散布量10g/m2で均一に紙基材１上に散布される。合成
樹脂粉末５はヒートロール７と接触して溶融し、同時に
シリコンゴム製の弾性ロール８によってプレスされ、紙
基材１上に圧着されるが、前記ヒートロール７は表面が
剥離性を有するため溶融した合成樹脂粉末５がヒートロ
ール７表面に転移することはない。合成樹脂粉末５の圧
着終了後、前記紙基材１が冷却部14を通過すると、溶融
合成樹脂粉末５は速やかに冷却されて紙基材１上で固化
する。合成樹脂粉末が固着した前記紙基材１は、ガイド
ロール12、12を経て巻取りロール13に巻き取られる。In the above apparatus, the paper base material 1 made of pulp having a basis weight of 43 g / m 2 and an air permeability of 15 seconds / 100 cc is delivered from the delivery roll 11 at a processing speed of 40 m / min. On the other hand, from the spraying device 2 in which the rotation speed of the rotating roll 4 was adjusted to 15 times / minute, the melting point 110
℃ synthetic resin powder of polyethylene with a particle size of 60-80 mesh 5
Is evenly sprayed on the paper base material 1 at a spraying rate of 10 g / m 2 . The synthetic resin powder 5 melts in contact with the heat roll 7, and at the same time is pressed by the elastic roll 8 made of silicon rubber and pressure-bonded onto the paper base material 1. The heat roll 7 has a peelable surface. The molten synthetic resin powder 5 does not transfer to the surface of the heat roll 7. When the paper base material 1 passes through the cooling unit 14 after the pressure bonding of the synthetic resin powder 5 is completed, the molten synthetic resin powder 5 is rapidly cooled and solidified on the paper base material 1. The paper base material 1 to which the synthetic resin powder is fixed is wound around a winding roll 13 via guide rolls 12, 12.
紙基材１上で合成樹脂が固着した部分は通気性がな
く、固着していない部分は通気性が確保される。この場
合は、透気度24秒/100ccの製品が得られ、合成樹脂粉末
５の散布量を変えることによって任意の透気度を有した
包装材料が得られる。例えばここで同じ紙基材、合成樹
脂粉末を用い、散布量を20g/m2に調整すると透気度79秒
/100ccの製品、散布量を30g/m2に調整すると透気度245
秒/100ccの製品が得られた。The portion of the paper base material 1 to which the synthetic resin is fixed does not have air permeability, and the non-fixed portion has air permeability. In this case, a product having an air permeability of 24 seconds / 100 cc can be obtained, and a packaging material having an arbitrary air permeability can be obtained by changing the amount of the synthetic resin powder 5 sprayed. For example, using the same paper base material and synthetic resin powder here and adjusting the spray rate to 20 g / m 2 , the air permeability is 79 seconds.
/ 100cc product, air permeability is 245 when spray amount is adjusted to 30g / m 2.
The product of sec / 100cc was obtained.
この他通気性基材に目付50g/m2のパルプ50％レーヨン
50％からなる不織布、合成樹脂粉末に融点125℃、粒度6
0〜80メッシュの高密度ポリエチレンを用いるなど、用
途に合わせて様々な材料を用いることができる。In addition to this, a breathable base material is made of 50% rayon pulp with a basis weight of 50 g / m 2.
Nonwoven fabric consisting of 50%, synthetic resin powder, melting point 125 ° C, particle size 6
Various materials can be used according to the application such as using high density polyethylene of 0 to 80 mesh.
上記実施例では、合成樹脂粉末の散布装置として合成
樹脂粉末を充填したホッパーの下に回転ロールを設置し
たものを用いたが、回転ロールの他にも振動篩、又はそ
れらを組み合わせた装置を用いることもできる。In the above-mentioned embodiment, the one in which the rotating roll is installed under the hopper filled with the synthetic resin powder is used as the dispersing device of the synthetic resin powder, but in addition to the rotating roll, the vibrating screen, or a device combining them is used. You can also
又製品の透気度の調整は合成樹脂粉末の散布量を変え
るだけでなく、基材の加工速度を変えることによっても
調整可能である。The air permeability of the product can be adjusted not only by changing the amount of synthetic resin powder sprayed, but also by changing the processing speed of the base material.
（発明の効果） 本発明は上記構成を有するので、包装材料の透過度を
調整するための各種の針又はピン状の突起を有する加熱
ロールを複数もつことなく、用途に合わせて任意に透過
度を調整したヒートシール性通気包装材料を、一工程で
簡便に製造することができる。(Effects of the Invention) Since the present invention has the above-mentioned configuration, it is possible to arbitrarily adjust the permeability according to the application without having a plurality of heating rolls having various needles or pin-shaped projections for adjusting the permeability of the packaging material. The heat-sealable air-permeable packaging material in which the above is adjusted can be simply produced in one step.
第１図は本発明の一実施例の工程を示す概略図である。 １……通気性基材 ２……散布装置 ５……合成樹脂粉末 ７……ヒートロール 10……冷却部 FIG. 1 is a schematic view showing the process of one embodiment of the present invention. 1 ... Breathable substrate 2 ... Spraying device 5 ... Synthetic resin powder 7 ... Heat roll 10 ... Cooling unit
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−19153（ＪＰ，Ａ) 特公 昭60−25263（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-19153 (JP, A) JP-B-60-25263 (JP, B2)
Claims (1)
性を有し、気体透過性の良好なる通気性基材の上に、粒
度が20〜200メッシュの合成樹脂粉末を散布量調整可能
な散布装置を用いて散布し、表面の剥離性が良好で表面
温度が合成樹脂粉末の融点以上に加熱されたヒートロー
ルに前記通気性基材の合成樹脂粉末散布面を接するよう
にしてこのヒートロールを通過させ、合成樹脂粉末を、
その合成樹脂粉末の粒子に囲まれた貫通孔が分布しその
合成樹脂粉末の散布量により気体透過度を調整できるよ
うに、通気性基材に溶融、圧着させた後、冷却部に前記
通気性基材を通過させることを特徴としたヒートシール
性通気包装材料の製造方法。1. The amount of synthetic resin powder having a particle size of 20 to 200 mesh can be adjusted on an air-permeable base material having heat resistance equal to or higher than the melting point of the synthetic resin powder to be dispersed and having good gas permeability. This spraying is carried out by using such a spraying device, and the heat release of the breathable base material is brought into contact with a heat roll having a good surface releasability and a surface temperature higher than the melting point of the synthetic resin powder. Pass the synthetic resin powder through a roll,
Through-holes surrounded by the particles of the synthetic resin powder are distributed, and the gas permeability is adjusted by adjusting the amount of the synthetic resin powder sprayed. A method for producing a heat-sealable breathable packaging material, which comprises passing a base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309934A JP2559902B2 (en) | 1990-11-14 | 1990-11-14 | Method for producing heat-sealable breathable packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309934A JP2559902B2 (en) | 1990-11-14 | 1990-11-14 | Method for producing heat-sealable breathable packaging material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04179545A JPH04179545A (en) | 1992-06-26 |
| JP2559902B2 true JP2559902B2 (en) | 1996-12-04 |
Family
ID=17999110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2309934A Expired - Fee Related JP2559902B2 (en) | 1990-11-14 | 1990-11-14 | Method for producing heat-sealable breathable packaging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2559902B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6355135B1 (en) | 1993-01-25 | 2002-03-12 | Daikin Industries, Ltd. | Method of laminating gas permeable sheet material |
| US5612081A (en) * | 1994-11-25 | 1997-03-18 | Netlon Limited | Applying grit particles to a continuous web |
| US5827608A (en) * | 1996-10-28 | 1998-10-27 | Minnesota Mining And Manufacturing Company | Method of forming a thermoplastic layer on a flexible two-dimensional substrate and powder for preparing same |
| EP1062054A1 (en) | 1998-03-11 | 2000-12-27 | Minnesota Mining And Manufacturing Company | Method of forming a thermoplastic layer on a layer of adhesive |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA834564B (en) * | 1982-06-30 | 1984-08-29 | Sinter Ltd | A process and device for preparing plastic-coated backing webs |
| JPS6025263A (en) * | 1983-07-21 | 1985-02-08 | Nec Corp | Lead frame |
-
1990
- 1990-11-14 JP JP2309934A patent/JP2559902B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04179545A (en) | 1992-06-26 |
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