JPH01159053A - Production of water absorptive sheet - Google Patents
Production of water absorptive sheetInfo
- Publication number
- JPH01159053A JPH01159053A JP62319951A JP31995187A JPH01159053A JP H01159053 A JPH01159053 A JP H01159053A JP 62319951 A JP62319951 A JP 62319951A JP 31995187 A JP31995187 A JP 31995187A JP H01159053 A JPH01159053 A JP H01159053A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- water
- water absorptive
- sheets
- absorbing
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 235000013305 food Nutrition 0.000 abstract description 2
- 229940126214 compound 3 Drugs 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 description 15
- 230000002745 absorbent Effects 0.000 description 7
- 239000002250 absorbent Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- -1 or Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000006694 eating habits Nutrition 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000011088 parchment paper Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は生鮮食品１例えば魚介類、肉、野菜等の鮮度を
落すことなく脱水することのできる。吸水シートの製造
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention can dehydrate fresh foods 1, such as seafood, meat, vegetables, etc., without reducing their freshness. The present invention relates to a method for manufacturing a water-absorbing sheet.
〈従来の技術〉 余分な水分を吸い取って素材の旨味を凝縮し。<Conventional technology> Absorbs excess moisture and condenses the flavor of the ingredients.
しかも、素材の鮮度を長く保つことのできる吸水シート
は、最近の食生活の多様化に即した新たな調理用材を提
供するものとして注目を集めつつある。In addition, water-absorbing sheets that can maintain the freshness of ingredients for a long time are attracting attention as a new cooking material that is in line with the recent diversification of dietary habits.
このような吸水シートの構造は、例えば実公昭６１−３
３３７号にみられるように、吸水剤を表裏のフィルム間
に層状に被覆してシート状にしたものである。ここで、
フィルムの少なくとも一方は半透膜であり、そして、内
部の吸水剤としてはアクリル酸共重合体等の吸水作用の
大きいものが用いられている。The structure of such a water-absorbing sheet is, for example,
As seen in No. 337, a water-absorbing agent is coated in a layer between front and back films to form a sheet. here,
At least one of the films is a semipermeable membrane, and as the water absorbing agent inside, a material having a large water absorbing effect such as an acrylic acid copolymer is used.
一方、吸水シートの連続的な製造方法も提案されており
、例えば、特開昭６０−２３２９３５号、同６０−２
：１２９３ ｂ号、同６０−２３２９３７号等にみられ
る。提案されているこれらの製造方法は、概ね、２枚の
ヒートシール可能なシートのうち、一方へ吸水性組成物
を構成するものの一吸水剤を供給した後、更に次工程で
他の構成素材の糊剤等を順次供給し、次いでヒートシー
ル工程を経るものであった。On the other hand, continuous manufacturing methods for water-absorbing sheets have also been proposed, for example, Japanese Patent Application Laid-open Nos. 60-232935 and 60-2.
:1293b, 60-232937, etc. These proposed manufacturing methods generally involve supplying one water-absorbing agent of the water-absorbing composition to one of two heat-sealable sheets, and then adding other constituent materials in the next step. Gluing agents and the like were sequentially supplied, followed by a heat sealing process.
〈発明が解決しようとする問題点〉
従来提案されているこのような吸水シートの製造方法は
、工程の合理化と、製造装置の簡略化、更には低コスト
化の達成に対して解決すべき課題となっていたのである
。<Problems to be solved by the invention> The conventionally proposed manufacturing methods for water-absorbing sheets have problems to be solved in terms of rationalizing the process, simplifying the manufacturing equipment, and achieving lower costs. It was.
く問題点を解決するための手段〉
そこで、本発明者は種々検討した結果、以下に示すよう
な吸水シートの製造方法を開発したのである。Means for Solving the Problems> Therefore, as a result of various studies, the inventors of the present invention developed a method for producing a water absorbent sheet as shown below.
すなわち、その製造方法は少なくとも一方が半透膜であ
る表シート（１）と裏シーｈ（２）をそれぞれ連続的に
２枚合せになるよう供給し、表裏面シート（１）（２）
の間へ脱泡した吸水剤組成物（３）を一段でシート状に
連続的に供給して積層した後、両端縁を熱又は接着剤で
シールすることを特徴とするものである。That is, the manufacturing method is to continuously supply the front sheet (1) and the back sheet h (2), at least one of which is a semipermeable membrane, so as to combine two sheets, and then to form the front and back sheets (1) and (2).
The degassed water-absorbing agent composition (3) is continuously supplied in a single stage in the form of a sheet to be laminated, and then both edges are sealed with heat or an adhesive.
ここにいう吸水剤組成物（３）を一段でシート状に連続
的に供給するとは、吸水剤や増承剤、軟化剤（但しこれ
らに限定されるものではない）等の複数の素材によって
構成される吸水剤組成物（３）を個々の素材に分割供給
しないで一度に表裏面シート間に供給することを意味し
ている。Continuously supplying the water-absorbing agent composition (3) in a sheet form in one stage means that it is composed of multiple materials such as a water-absorbing agent, a thickening agent, a softening agent (but not limited to these), etc. This means that the water-absorbing agent composition (3) is supplied between the front and back sheets at once, rather than being supplied separately to each material.
〈作用〉
このような製法によると、吸水剤組成物（３）は予め混
合された状態で貯蔵槽中にストックされ、これを単一の
押出ダイス等で表裏面シー１−間に供給することができ
、シート上への間欠的な供給も容易に可能で、工程の合
理化と、製造装置の簡略化、更には低コスト化が達成で
きる。<Function> According to such a manufacturing method, the water absorbent composition (3) is stocked in a storage tank in a pre-mixed state, and this is supplied between the front and back seams 1 using a single extrusion die or the like. It is also possible to easily supply the material intermittently onto the sheet, thereby streamlining the process, simplifying the manufacturing equipment, and further reducing costs.
〈実施例〉 以下図面によって本発明の実施例を詳細に説明する。<Example> Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の吸水シートの製造方法が実施可能な製
造装置の概略図であり、第２図はこれによって得られた
吸水シートの端部切断斜視図である。FIG. 1 is a schematic view of a manufacturing apparatus capable of carrying out the method for manufacturing a water-absorbing sheet of the present invention, and FIG. 2 is a perspective cut-away view of the end of the water-absorbing sheet obtained thereby.
本装置では、裏シート（２）が図面左方のシート供給ロ
ール（４）から供給され１表シート（１）は装置中央付
近の上部からシート供給ロール（５）によってそれぞれ
供給される。これらの表裏面シート（１）（２）のうち
一方の裏シート（２）は装置左右方向に設けられたコン
ベア（６）上を進み、その途中の重合ローラ（７）部分
で表シート（１）と２枚合せとなる。In this apparatus, the back sheet (2) is supplied from a sheet supply roll (4) on the left side of the drawing, and the first front sheet (1) is supplied from the upper part near the center of the apparatus by a sheet supply roll (5). One of the front and back sheets (1) (2) travels on a conveyor (6) installed in the left-right direction of the apparatus, and the front sheet (1) is conveyed by the overlapping roller (7) in the middle of the conveyor (6) installed in the left-right direction of the device. ) is a combination of 2 sheets.
この２枚合せとなる直前の裏シート（２）上に吸水剤組
成物（３）の押出ダイス（８）が設けられており、吸水
剤組成物（３）が肩下な層状をなすように裏シート（２
）上に供給される。An extrusion die (8) for the water-absorbing agent composition (3) is provided on the back sheet (2) just before these two sheets are put together, so that the water-absorbing agent composition (3) forms a layer below the shoulders. Back sheet (2
) supplied above.
本発明の場合、吸水剤組成物（３）はこれを構成する総
てのものが予め調製されて押出ダイス（８）へ供給され
ることとなるが、そのために装置上部に吸水剤組成物（
３）の貯蔵槽（９）が設けられている。In the case of the present invention, all components of the water-absorbing agent composition (3) are prepared in advance and supplied to the extrusion die (8).
3) storage tank (9) is provided.
貯蔵槽（９）中では自然脱気が可能であるが、場合よっ
ては吸引脱気装置の付加も可能である。貯蔵槽（９）と
押出ダイス（８）の間には定量送りポンプ（１０）が設
けられ、これをコントロールする電磁弁（１１）によっ
て間欠定量送りが可能となっている。Natural deaeration is possible in the storage tank (9), but a suction deaeration device may be added depending on the case. A metering pump (10) is provided between the storage tank (9) and the extrusion die (8), and a solenoid valve (11) that controls the pump enables intermittent metering.
表裏面シート（１） （２）の間へ脱泡状態で供給され
た吸水剤組成物（３）はこのように一段でシート状に連
続的かつ間欠的に供給されて積層後、両端縁及び単位長
に吸水剤組成物の供給されない部分の切断部をヒートシ
ール装置（１２）によって溶着シールされ、カッター（
１３）で所定サイズに裁断されてシール縁部（１５）を
有する製品の吸水シート（１４）となる。The water-absorbing agent composition (3) supplied in a defoamed state between the front and back sheets (1) and (2) is thus continuously and intermittently supplied in the form of a sheet in one stage, and after lamination, the water-absorbing agent composition (3) is applied to both edges and The cut portion of the unit length where the water absorbent composition is not supplied is welded and sealed by the heat sealing device (12), and then the cutter (
At step 13), the sheet is cut into a predetermined size to become a product water absorbent sheet (14) having a sealed edge (15).
二二で本発明における吸水剤組成物（３）を詳細に説明
する。In Section 22, the water absorbent composition (3) of the present invention will be explained in detail.
吸水剤組成物（３）は本発明において特に限定するもの
ではなく、従来より用いられている吸水剤・に加えて、
低温下においても吸水シートの柔軟性を保持させるため
に加えられるグリセリン等の各種の柔軟化剤、増量剤、
乳化剤、腐敗防止剤等を必要に応じて加えることができ
、特に食品添加物として認められているものの中から選
択される。The water absorbing agent composition (3) is not particularly limited in the present invention, and in addition to conventionally used water absorbing agents,
Various softeners and extenders such as glycerin are added to maintain the flexibility of the water-absorbing sheet even at low temperatures.
Emulsifiers, anti-septic agents, etc. can be added as necessary, and are particularly selected from those approved as food additives.
これらのうち、吸水剤は吸水によってゲル化する高分子
化合物のアクリル酸、メタクリル酸、アクリルアミド等
の重合体、それらの誘導体、水あめ、アラビアゴム、カ
ゼイン等の高浸透圧物質等のいずれか、または、複数の
ものの混合物、更には、無機物質のモレキュラーシーブ
、活性白土。Among these, the water-absorbing agent is either a polymer such as acrylic acid, methacrylic acid, or acrylamide, a polymer that gels when water is absorbed, or a derivative thereof, or a high-osmotic substance such as starch syrup, gum arabic, or casein, or , mixtures of multiple things, and even molecular sieves of inorganic substances, activated clay.
アルミナ、マグネシア、石灰等の無機吸着剤を用いても
よい、これらは前述したように本発明では表裏シート（
１） （２）の間へ層状となすに際して、予め混合物と
して調製されて一度にシート上へ供給される。Inorganic adsorbents such as alumina, magnesia, and lime may also be used.
1) When layering between (2), the mixture is prepared in advance and fed onto the sheet at once.
半透膜シートの素材としては、ポリビニルアルコール、
ポリアミド、セロファン等のフィルムや硫酸紙等を用い
ることができる。特に、熱可塑性のフィルムが熱溶着可
能で好都合である。The materials for the semipermeable membrane sheet include polyvinyl alcohol,
Films made of polyamide, cellophane, etc., parchment paper, etc. can be used. In particular, thermoplastic films are advantageous because they can be thermally welded.
〈発明の効果〉
本発明の吸水シートの製造方法は以上のように、工程が
非常に簡略化されたものとなっており、したがって、工
程の合理化と、製造′！Ａ置の簡略化、更には低コスト
化が達成できた。<Effects of the Invention> As described above, the process for manufacturing a water-absorbing sheet of the present invention is extremely simplified. We were able to simplify the A location and further reduce costs.
第１図は本発明の吸水シートの製造方法を実施可能な＊
造装置の概略図であり、第２図はこれによって得られた
吸水シートの端部切断斜視図である。
（＋）表シー１− （２）裏シート（３）吸
水剤組成物 （４）（５）シート供給ロール（６）コ
ンベア （７）重合ローラ（８）押出ダイス
（９）貯蔵槽（１０）定量送りポンプ （１１）
電磁弁（１２）ヒートシール装置 （１３）カッター（
１４）吸水シート （１５）シール縁部以上Figure 1 shows how the method for producing a water-absorbing sheet of the present invention can be carried out*
FIG. 2 is a schematic diagram of the production apparatus, and FIG. 2 is a perspective cutaway view of the end of the water absorbent sheet obtained thereby. (+) Front sheet 1- (2) Back sheet (3) Water absorbent composition (4) (5) Sheet supply roll (6) Conveyor (7) Polymerization roller (8) Extrusion die
(9) Storage tank (10) Metering pump (11)
Solenoid valve (12) Heat sealing device (13) Cutter (
14) Water absorption sheet (15) Above the seal edge
Claims (1)
シート（２）をそれぞれ連続的に２枚合せになるよう供
給し、表裏両シート（１）（２）の間へ脱泡した吸水剤
組成物（３）を一段でシート状に連続的に供給して積層
した後、両端縁を熱又は接着剤でシールすることを特徴
とする吸水シートの製造方法。1. A front sheet (1) and a back sheet (2), at least one of which is a semipermeable membrane, are continuously supplied in pairs, and the defoamed water is absorbed between the front and back sheets (1) and (2). A method for producing a water-absorbing sheet, which comprises continuously supplying and laminating the agent composition (3) in sheet form in one stage, and then sealing both edges with heat or adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62319951A JPH01159053A (en) | 1987-12-16 | 1987-12-16 | Production of water absorptive sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62319951A JPH01159053A (en) | 1987-12-16 | 1987-12-16 | Production of water absorptive sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159053A true JPH01159053A (en) | 1989-06-22 |
Family
ID=18116065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62319951A Pending JPH01159053A (en) | 1987-12-16 | 1987-12-16 | Production of water absorptive sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159053A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06506140A (en) * | 1991-01-07 | 1994-07-14 | マルチフォーム デシカンツ，インク． | Oxygen-absorbent label |
| US5667863A (en) * | 1991-01-07 | 1997-09-16 | Multisorb Technologies, Inc. | Oxygen-absorbing label |
| US5686161A (en) * | 1991-01-07 | 1997-11-11 | Multisorb Technologies, Inc. | Moisture-sensitive label |
| WO2012042850A1 (en) * | 2010-09-30 | 2012-04-05 | Uni-Charm Corporation | Method of manufacturing drip absorbent sheet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49131980A (en) * | 1973-03-10 | 1974-12-18 | ||
| JPS60232935A (en) * | 1984-05-04 | 1985-11-19 | Showa Denko Kk | Continuous manufacture of contact dehydration sheet |
| JPS613337U (en) * | 1984-06-14 | 1986-01-10 | 日本ピーマック株式会社 | Heating and cooling equipment using heat pump air conditioners |
-
1987
- 1987-12-16 JP JP62319951A patent/JPH01159053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49131980A (en) * | 1973-03-10 | 1974-12-18 | ||
| JPS60232935A (en) * | 1984-05-04 | 1985-11-19 | Showa Denko Kk | Continuous manufacture of contact dehydration sheet |
| JPS613337U (en) * | 1984-06-14 | 1986-01-10 | 日本ピーマック株式会社 | Heating and cooling equipment using heat pump air conditioners |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06506140A (en) * | 1991-01-07 | 1994-07-14 | マルチフォーム デシカンツ，インク． | Oxygen-absorbent label |
| US5667863A (en) * | 1991-01-07 | 1997-09-16 | Multisorb Technologies, Inc. | Oxygen-absorbing label |
| US5686161A (en) * | 1991-01-07 | 1997-11-11 | Multisorb Technologies, Inc. | Moisture-sensitive label |
| US6139935A (en) * | 1991-01-07 | 2000-10-31 | Multisorb Technologies, Inc. | Oxygen-absorbing label |
| WO2012042850A1 (en) * | 2010-09-30 | 2012-04-05 | Uni-Charm Corporation | Method of manufacturing drip absorbent sheet |
| JP2012076341A (en) * | 2010-09-30 | 2012-04-19 | Unicharm Corp | Method of manufacturing drip sheet |
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