TW201934206A - 壓延製程與後壓延製程中之結構化輥筒 - Google Patents
壓延製程與後壓延製程中之結構化輥筒 Download PDFInfo
- Publication number
- TW201934206A TW201934206A TW108103237A TW108103237A TW201934206A TW 201934206 A TW201934206 A TW 201934206A TW 108103237 A TW108103237 A TW 108103237A TW 108103237 A TW108103237 A TW 108103237A TW 201934206 A TW201934206 A TW 201934206A
- Authority
- TW
- Taiwan
- Prior art keywords
- calendering
- liquid
- roller
- tape
- calender
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/003—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating incorporating means for heating or cooling the liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
- B29C2043/461—Rollers the rollers having specific surface features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
- B29C2043/461—Rollers the rollers having specific surface features
- B29C2043/462—Rollers the rollers having specific surface features smooth surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
- B29K2995/0073—Roughness, e.g. anti-slip smooth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2405/00—Adhesive articles, e.g. adhesive tapes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/26—Presence of textile or fabric
- C09J2400/263—Presence of textile or fabric in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/28—Presence of paper
- C09J2400/283—Presence of paper in the substrate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
一種即使是極黏的聚合物也能夠加工之壓延設備,其係建構並設置來加工增黏的液體或固有黏性的液體,其中加工典型上包括將液體成形為指定層厚的薄膜、將液體施加在載體材料上、後壓延或是至少兩個上述製程之組合,該壓延設備包含一用於供給該液體的供給裝置,一具有至少兩個壓延輥與至少一個用於液體之加工的壓延輥隙之多輥壓延機,其中該至少兩個壓延輥中的至少一者具有介於5μm與15μm之間,特別是介於9μm與13μm之間的平均粗糙度Rz。
Description
本發明係關於一種壓延設備,其係建構並設置來加工增黏的液體或固有黏性的液體,其中加工典型上包括將液體成形為指定層厚的薄膜、將液體施加在載體材料上、後壓延或是至少兩個上述製程之組合,該壓延設備包含一用於供給該液體的供給裝置,一具有至少兩個壓延輥與至少一個用於液體之加工的壓延輥隙之多輥壓延機。本發明進一步關於一種用於加工增黏的液體或固有黏性的液體之壓延方法以及一種具有依照此方法而得到的黏著劑之膠帶,其中該加工包括將液體成形為指定層厚的薄膜、將液體施加在載體材料上、後壓延或是至少兩個上述製程之組合。
輥塗涉及大量藉由兩個以上輥筒將聚合物成形並捲繞或是施加於載體上之技術。例如在橡膠工業中塗布壓延機係提供來將聚合物成形並塗布在帶狀材料上,例如梭織物或非織物上。其中輥筒通常設計成可加熱的,以將溫度輸入聚合物中。藉此通常使聚合物更低黏度並能更容易成形。這能讓輥筒更容易運轉並降低投資與運作成本。
為了能達到低塗布量,在高黏度聚合物的情形較佳使用多輥壓延機。此時,從塗布輥之間較大的輥隙開始,塗布量藉由增加從動輥的差速(摩擦)而被逐步降低至目標重量。
當聚合物在加工溫度下為黏性並傾向於黏著在輥筒上時會產生困難。對此的範例為特定的橡膠混合物或PVC混合物,特別是還有黏著劑。藉由針對性的調整溫度與摩擦及視情況的其他加工參數,可在一定的限度內避免在這方面令人困擾的黏性。
但在高黏性系統的情形,例如在丙烯酸酯系統或混合了樹脂的塑膠調配物、EVA或合成塑膠系黏著劑之情形,於此會遇到加工限制。
所以為了加工高黏性的調配物,較佳使用抗黏配置的輥筒。對此的範例提出在例如EP 2 192 148 B1,第13頁,第16~41行。然而此輥筒通常有其壽命有限的缺點,因為其抗黏效果隨著時間降低,以及抗黏組件隨著時間而磨損或被用壞。此外,選擇在生產過程中穩定作用的變數極為複雜,因為如此配置的塗布輥應先從前面的輥筒良好地接收預成形的薄膜,然後必須再完全無殘留地轉移到接下來的輥筒上。因此製程視窗(process window)極為有限,僅適用於特定配方與製程。
如氟改性的塗層之另一種系統明顯更穩定,但對高黏性的系統具有過低的抗黏效果。此時雖然能充分良好地從接鄰的輥筒表面接收待壓延的聚合物,但在另一方面無法完全轉移到接下來的輥筒上。
在高黏性系統使用具有約140L/cm與約10μm的脊寬之適用於丙烯酸酯塗層的典型金屬網紋輥(參見EP 2 192 148 B1,第13頁,第43~46行)也是不可能的,因為黏著劑無法完全被此輥筒接收。殘留物留在前面的輥筒上,導致不穩定且不適合生產的過程。
這導致許多配方變體完全不能以輥塗機塗布或是不能以期望的帶材速度及/或塗布量塗布。
另一個問題是聚合物對載體材料的錨固強度。在這裡出於經濟上的因素,人們希望省去設置具助黏劑的待塗布帶材。而對於非織物與梭織物來說,用電暈、電漿或火焰預處理之成本上經濟的預處理經常不會產生期望的結果。
塗布了黏性聚合物的材料在製程中(線上(inline))或在另一個作業階段(離線(offline)藉由在輥隙的壓力及/或溫度(後壓延)來提升對載體材料的黏著劑附著力之處理係高度受限。特別是壓敏性黏著劑,還有其他如聚乙烯或乙烯-乙酸乙烯酯之聚合物,在適合的加工溫度下具有黏性,其導致過強地黏附在接觸的輥筒表面上,並最終導致不穩定的製程。而在這裡使用抗黏的輥筒表面也由於已經在上面說過的難處而在材料選擇與壽命方面受限。具抗黏表面的聚合物輥筒由於有限的硬度而不能在輥隙傳遞所需的力。
由於這些因素,上述已知的輥筒類型對於用來塗布高黏性聚合物的有效率的可撓性之輥塗方法,以及對於用來提升高黏性聚合物之錨固的後壓延來說都是
不適合的。
因此,本發明之課題為以輥壓製程實現高黏性聚合物的加工性以及其對非織物與梭織物充分的結合強度。
這一方面特別係關於藉由在輥隙中預成形來將聚合物成形為指定層厚之薄膜,以及以漸變的轉速轉移至一個以上接下去的輥筒。上述已知的用於提升加工性的操作變量在此經常為不夠的。
此外,還要考慮成形的熔體薄膜從最後的壓延輥到帶狀載體材料上之轉移。這裡用已知的方法,特別是對開放或結構化的載體材料,例如具低孔隙大小的梭織物材料與非織物材料,達不到充分的結合強度,因為製程上僅能施加有限的線壓力。若此線壓力過低且聚合物熔體的黏度過高以及孔隙的水力直徑過小,則在此情形熔體無法充分滲入載體開口中。
此課題依據本發明係藉由一開始所提到的類型之壓延設備解消,其係在至少兩個壓延輥中的至少一者具有介於5μm與15μm之間,特別是藉由9μm與13μm之間的平均粗糙度Rz。
其中平均粗糙度Rz係定義為:Rz=1/n.(Rz1+Rz2+Rz3+...Rzn),即,在各輥筒的各個不同點測量之粗糙度的平均
值,其中n為量測值的編號。測量係依據DIN EN ISO 3274的規範進行。
藉由這樣對加工條件適當選擇與調整輥表面,可避免掉具縮短的使用壽命或不充足的強度之較不耐用的輥筒材料,其不符每日生產對壽命與耐久性的高要求,此外還具有高採購成本。替代地,藉由從可用並廣泛使用的輥筒材料中適當選擇輥筒粗糙度,確立了用於黏性材料的穩定、健全的加工之充足的製程視窗。
具適合的粗糙度值之特定輥筒選擇,讓即使是高黏性的橡膠與合成橡膠以及其混合物,也能以輥塗法加工。PU聚合物、EVA聚合物與其他增黏的聚合物或固有黏性的聚合物與聚合物混合物也能藉此加工與後壓延。
1‧‧‧計量輥
2‧‧‧轉移輥
3‧‧‧轉移輥
4‧‧‧聚合物對向輥
5‧‧‧黏著劑
6‧‧‧載體帶材
7‧‧‧橡膠輥
8‧‧‧鋼輥
圖1顯示實施例1至4中使用的壓延機之配置。
圖2顯示實施例5至7中所使用的壓延機與後壓延裝置之配置。
圖3顯示所使用的輥筒取決於溫度與輥筒表面之剝離力。
較佳為所有壓延輥各自獨立地具有介於5μm與15μm之間,特別是介於9μm與13μm之間的平均粗糙度Rz,即所有壓延輥係較佳地依據本發明建構。
此外,較佳為壓延設備中至少兩個壓延輥中的至少
二者係後壓延輥。
作為用於輥體的材料典型上使用鋼。作為壓延輥的表面金屬表面係特別適合的,所以依據本發明之壓延設備中至少兩個壓延輥中的至少一者具有金屬表面。作為金屬表面特別可為鋼或鉻。硬質材料輥,特別是具有由碳化金屬構成之表面者,在此情形特別適合像具有鉻表面的輥。
此金屬表面在依據本發明之輥壓製程中確保製程中典型的高強度與長壽命。作為輥筒依據本發明較佳使用鋼輥、鍍鉻鋼輥以及具提供強度的碳化金屬之硬質材料輥。這裡特別可提到碳化鎢表面。
當至少兩個壓延輥中的至少一者係建構成可加熱的時,在壓延時可達到特佳的處理過程。可變的輥筒溫度給出另一個參數,其能影響壓延製程並藉此影響形成的產物。其中,建構成可加熱的壓延輥之輥筒溫度較佳各自獨立地選自50至150℃之範圍,特別是80至120℃之範圍。
較佳為該壓延設備進一步包含至少一個聚合物對向輥。此聚合物對向輥提供另一個輥隙,此外特別提供用來導引載體材料,聚合物係施加在該載體材料上。
以依據本發明之壓延設備能加工任意的液狀聚合物。該壓延設備特別適用於從包含以下之群組中所選出的液體:黏性組成物或增黏組成物,特別是基於橡膠、合成橡膠、聚胺甲酸酯、環氧化物、乙烯-乙酸乙烯酯、聚(甲基)丙烯酸酯與其混合物之壓敏黏著劑。依據
本發明之設備正好適用於以傳統的壓延設備無法令人滿意地加工之特別高黏性的聚合物。
可加工的聚合物之黏度,能以依據本發明之設備特佳地加工。至於可加工的聚合物之黏度,在各個塗布溫度與1rad/s,能以依據本發明之設備特佳地加工之聚合物係在500至150,000Pa*s之黏度範圍內。
此外,本發明之課題係藉由一種用於加工增黏的液體或固有黏性的液體之壓延方法解消,其中該加工包括將液體成形為指定層厚的薄膜、將液體施加在載體材料上、後壓延或是至少兩個上述製程之組合,其中該方法係以前述設備進行。壓延設備的較佳實施形態也適用於該壓延方法,反之亦然。
以依據本發明之方法加工之聚合物,特別是聚丙烯酸酯,能被很好地使用作為壓敏性黏著劑,較佳係作為用於膠帶之壓敏性黏著劑,其中該壓敏性黏著劑係作為載體膜上的單面或雙面薄膜存在。非完整的示範性用途有:工業膠帶,特別是使用於建築的工業膠帶,例如絕緣膠帶、防腐膠帶、鋁箔膠帶、織物強化薄膜膠帶(布膠帶(duct tape)),建築專用膠帶,例如防潮層、組裝膠帶、纜線纏繞膠帶、自黏性薄膜及/或紙標籤,以及汽車工業用於部件的固定或纜線的護套之用途。
此外,以依據本發明之方法加工的聚合物,特別是橡膠或合成橡膠,能極佳地被使用作為壓敏性黏著劑,較佳為作為用於膠帶的壓敏性黏著劑,其中該壓敏性黏著劑係作為載體膜上的單面或雙面薄膜存在。非
完整的示範性用途有:工業膠帶,特別是使用於建築的工業膠帶,例如織物膠帶、織物強化薄膜膠帶(布膠帶)、防潮層,還有組裝膠帶、纜線纏繞膠帶、以及用於部件的固定或纜線的護套之用途。
但以依據本發明之壓延設備與依據本發明之壓延方法不僅提升了聚合物的加工性,其中特別是沒有聚合物組分保持附著在輥筒上。相反的,還可達成形成的產物之性質提升。在膠帶的情形特別是如此,當使用依據本發明之壓延設備時,聚合物對載體材料的錨固強度提升。因此,本發明另外還關於一種膠帶,其包含一依據上述壓延方法製程之壓敏性黏著劑。在此情形其可為單面或雙面膠帶。此種膠帶包含至少一個載體材料。其中作為載體材料較佳使用各種成形形狀之梭織物(特別是棉織物)、針織物、非織物或紙。
較佳為此種膠帶具有介於55與120g/m2之間的基重。其中基重是指黏著層的組成物塗布而非帶載體的整個膠帶。此種基重過去用已知方法與設備,在上述特別黏的聚合物及/或開放或結構化載體材料的情形,於壓延製程中為無法永久加工穩定地達到的。
依據本發明之具有至少一個載體之膠帶的特徵為壓敏性黏著劑與載體材料之高結合強度。結合強度也稱為錨固強度,說明為了將黏著劑從載體材料分離所需的力。結合強度應該始終比黏著劑的內聚力與黏著劑對基材的附著力還高。如此確保膠帶能從基材拆除,且此時膠帶不會破損或有惱人的殘留物留在基材上。能以依據
本發明之設備與依據本發明之方法得到的結合強度較佳至少達17N/cm。
所使用的輥筒的粗糙度之量測係藉由輪廓儀進行。測試裝置為位於德國哥廷根的Mahr GmbH之Mahr MarSurf PS1。量測係依據DIN EN ISO 3274的規範進行。
為了特徵化所使用的輥筒對黏性聚合物之黏附性質,在加工溫度下測定對指定膠帶的剝離力。若在加工溫度下無法進行測量,則在最接近的可能溫度測量。
為此,以加壓輥(2kg)用5m/min的速度在機器方向將19mm的膠帶試條在調溫過的輥體上滾過3次並固定。緊接著以指定的速度(0.3~5m/min)以90°的剝離角度藉由彈簧秤測量以g計的剝離力。記錄下測量值與破壞模式。
黏度測量係以ARES型的流變儀(Rheometric Scientific)於115℃與1s-1的剪切速度下以具50mm之直徑的錐板系統進行。
為了測定錨固力,將10mm寬的塗層試體之樣本以雙面膠帶固定在一鋼板上。接下來將tesa測試膠帶7476借助具2kg的重之鋼輥以10m/min的速度在在樣
本的開放黏著劑側上總共滾過10次並固定。測試膠帶對附著體的錨固力係在Zwick型的拉力測試機上以180℃之剝離角度在23℃/55%相對濕度與500mm/min的剝離速度下測定。錨固力係以N/cm測定。
以輥塗法壓延具以下組分之橡膠系黏著劑:15重量% 天然橡膠V145
15重量% 合成橡膠Europrene Sol T 190
38重量% 烴樹脂Regalite R 1125
31重量% 白堊MS40
1重量% 抗氧化劑Irganox 1726。
於115℃與1rad/s剪切速率下測定的黏度為17,000Pa*s。
黏著劑係預先在AMK公司的251捏合機中
製造並填充於具50*50*1000mm之尺寸的矽化紙箱中。將此股狀黏著劑飼入Troester公司的熔融擠出機(GS60 * 10D)中,並以120℃的溫度以45kg/h的流率飼入3輥L型壓延機的計量間隙。
實施例1至4中使用的壓延機之配置示於圖1中:第1輥筒1(所謂的計量輥)係配備拋光鉻表面,第2輥筒2(轉移輥)以及第3輥筒3(轉移輥)係配備具約1μm的平均粗糙度Rz之鉻表面。由120目嫘縈織物構成的載體帶材6在80° Sh A-聚合物對向輥4上移動進輥隙中,並應從轉移輥完全接收黏著劑5。帶材速度被調整為15m/min,對梭織物的塗布量為100g/m2。
計量輥1係固定地運轉,轉移輥2相對地以帶材速度的20%運轉,轉移輥3係與帶材同步運轉。
於W1=120℃、W2=120℃、W3=110℃、對向輥=80℃的溫度下,黏著劑成功在輥筒2上整面成形,但從輥筒2至3以及從輥筒3至載體帶材6之塗布輥隙沒有無殘留地黏著劑轉移。輥筒2與3的輥筒表面為不適合的。
選擇與實施例1相同的實驗配置與相同的加工參數。只將輥筒3替換為具有23μm之平均粗糙度Rz的更粗糙表面之類型。
黏著劑成功在輥筒2上整面成形,但在黏著劑從輥筒2轉移至3時仍有大量殘留物,使得在梭織物
無法得到封閉的塗膜。輥筒2的輥筒表面與輥筒3組合為不適合的。
選擇與實施例1相同的實驗配置與相同的加工參數。只將輥筒2與3替換為具有中等的粗糙度(Rz約10μm)之類型。
令人驚訝地,以此輥筒配置黏著劑成功在輥筒2上整面成形,且從輥筒2至3以及從輥筒3至載體帶材6之塗布輥隙成功無殘留地黏著劑轉移。
基於實施例3,再次於壓延機中使用具約10μm的平均粗糙度之輥筒2、3。作為載體材料6係使用150目棉織物,此外選擇與實施例1相同的實驗配置與相同的加工參數。
載體材料的塗層成功具有塗布量100g/m2之封閉的均勻黏著劑層。於新鮮狀態下對結合強度測得12.6以及12.1與12.7N/cm之數值。目標結合強度為17N/cm。
於實施例5至7中所使用的壓延機與後壓延裝置的配置示於圖2:壓延機的配置與圖1中所示者相同。圖2中所示之設備額外包含一後壓延裝置。
基於實施例4,再次於壓延機中使用具約
10μm的平均粗糙度Rz之輥筒2、3。作為載體材料6再次使用150目棉織物,選擇與實施例4相同的實驗配置與相同的加工參數。此外,複合體在離開壓延裝置後緊接著被移至一調溫過的2輥間隙(「後壓延裝置」)中。此後壓延裝置係將硬度90°ShA的橡膠輥7置於載體帶材6的背面,並將載體帶材6的黏著面置於Rz數為9μm之鋼輥8上。溫度為80或120℃(輥筒7與8),線壓力為50N/cm。
載體材料的塗層成功具有塗布量100g/m2之封閉、均勻的黏著劑層。材料沒有黏在鋼輥上。於新鮮狀態下對結合強度測得17.2以及18.0與17.9N/cm之數值。目標結合強度為17N/cm。
基於實施例5,再次於壓延機中使用具約10μm的平均粗糙度Rz之輥筒2、3。作為載體材料再次使用150目棉織物,此外選擇與實施例4相同的實驗配置與相同的加工參數。
再次讓複合體在離開壓延裝置後緊接著被移至一後壓延裝置中。此後壓延裝置係將硬度90°ShA的橡膠輥7置於載體帶材6的背面,並將載體帶材6的黏著面置於Rz數為0.2μm之鋼輥8上。溫度為80或120℃(輥筒7與8),線壓力為50N/cm。
載體材料的塗層成功具有塗布量100g/m2之封閉、均勻的黏著劑層。但材料黏在鋼輥8上,無法評量結合強
度。
基於實施例5,再次於壓延機中使用具約10μm的平均粗糙度Rz之輥筒2、3。作為載體材料再次使用150目棉織物,此外選擇與實施例4相同的實驗配置與相同的加工參數。
再次讓複合體在離開壓延裝置後緊接著被移至一後壓延裝置中。此後壓延裝置係將硬度90°ShA的橡膠輥7置於載體帶材6的背面,並將載體帶材6的黏著面置於Rz數為23μm之鋼輥8上。溫度為80或120℃(輥筒7與8),線壓力為50N/cm。
載體材料的塗層成功具有塗布量100g/m2之封閉、均勻的黏著劑層。材料沒有黏在鋼輥8上。
於新鮮狀態下對結合強度測得15.1以及14.6與14.7N/cm之數值。目標結合強度為17N/cm。
實驗證實,要在壓延塗布後達到充足的結合強度,具有1<Rz<23μm之平均粗糙度的表面粗糙度之接觸黏著劑的金屬輥為適合的。
所使用的輥筒取決於溫度與輥筒表面之剝離力係報告於圖3中。由圖3可以看出,剝離力隨著粗糙度上升以及溫度上升而下降。
實施例顯示,具有相應低的粗糙度(例如Rz約1μm)之特別光滑的輥筒係不適合在壓延製程中完整接收黏性熔體(如PSA或其他聚合物)並轉移至接下去的
輥筒上。即便轉移到可良好地潤濕之載體狀材料(如紙、非織物或梭織物)也不完整,所以具此種粗糙度的輥筒不適用於生產製程。
具15μm以上的Rz值之粗糙輥筒也不適合在壓延製程中保證完整接收與轉移黏性聚合物。此處,完整接收待加工的聚合物在許多情形下已經是妨礙使用於生產製程中的弱點。
令人驚訝地發現,具有5~15μm之Rz值的表面為特別適合的。其在完整接收與轉移待加工的聚合物方面具有良好的性質。
藉此,在1rad/s的剪切速率與加工溫度下,能穩定且可靠地壓延在500至150,000Pa * s之範圍內的黏度。
Claims (14)
- 一種壓延設備,其係建構並設置來加工增黏的液體或固有黏性的液體,其中加工典型上包括將液體成形為指定層厚的薄膜、將液體施加在載體材料上、後壓延或是至少兩個上述製程之組合,該壓延設備包含一用於供給該液體的供給裝置,一具有至少兩個壓延輥與至少一個用於液體之加工的壓延輥隙之多輥壓延機,其特徵為:該至少兩個壓延輥中的至少一者具有介於5μm與15μm之間,特別是介於9μm與13μm之間的平均粗糙度Rz。
- 如請求項1之壓延設備,其中所有壓延輥各自獨立地具有介於5μm與15μm之間,特別是介於9μm與13μm之間的平均粗糙度Rz。
- 如請求項1或2之壓延設備,其中該至少兩個壓延輥中的至少二者為後壓延輥。
- 如請求項1至3中任一項之壓延設備,其中該至少兩個壓延輥中的至少一者具有金屬表面,特別是碳化金屬表面。
- 如請求項1至4中任一項之壓延設備,其中該至少兩個壓延輥中的至少一者係建構為可加熱的。
- 如請求項5之壓延設備,其中該等建構成可加熱的壓延輥的輥筒溫度,能各自獨立地在至少在50至150℃之範圍內,特別是在至少在80至120℃之範圍內選擇。
- 如請求項1至6中任一項之壓延設備,其進一步包含至少一個聚合物對向輥。
- 如請求項1至7中任一項之壓延設備,其中該液體係自包含黏性組成物或增黏組成物之群組中所選出,特別是基於橡膠、合成橡膠、聚胺甲酸酯、環氧化物、乙烯-乙酸乙烯酯、聚(甲基)丙烯酸酯與其混合物之壓敏黏著劑。
- 一種用於加工增黏的液體或固有黏性的液體之壓延方法,其中該加工包括將液體成形為指定層厚的薄膜、將液體施加在載體材料上、後壓延或是至少兩個上述製程之組合,其特徵為:以如請求項1至8中任一項之設備進行加工。
- 一種包含壓敏黏著劑之膠帶,其特徵為該壓敏黏著劑係依照如請求項9之壓延方法製成。
- 如請求項10之膠帶,其中該膠帶具有介於55與120g/m2之間的基重。
- 如請求項10或11之膠帶,其進一步包含至少一種載體材料。
- 如請求項12之膠帶,其中該載體材料係自包含以下之群組中所選出:梭織物(特別是棉織物)、針織物、非織物與紙張。
- 如請求項13之膠帶,其中壓敏黏著劑與載體材料之黏合強度為至少17N/cm。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018201684.4A DE102018201684A1 (de) | 2018-02-05 | 2018-02-05 | Strukturierte Walzen im Kalander - und Nachkalandrierprozess |
??102018201684.4 | 2018-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW201934206A true TW201934206A (zh) | 2019-09-01 |
Family
ID=65324353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW108103237A TW201934206A (zh) | 2018-02-05 | 2019-01-29 | 壓延製程與後壓延製程中之結構化輥筒 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210078216A1 (zh) |
EP (1) | EP3749463A1 (zh) |
DE (1) | DE102018201684A1 (zh) |
TW (1) | TW201934206A (zh) |
WO (1) | WO2019149944A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113373703A (zh) * | 2020-03-10 | 2021-09-10 | 东丽纤维研究所(中国)有限公司 | 一种墙面装饰用无纺材料 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115445849B (zh) * | 2022-10-11 | 2023-10-13 | 湖南湘衡彩印有限公司 | 一种纸制品加工用涂胶装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1081728B (it) * | 1977-05-04 | 1985-05-21 | Ind Veneta Gomma Colbachini I | Apparecchiatura per la produzione di nastri continui in gomma od equivalente materiale elastomerico vulcanizzabile,in particolare per il confezionamento di tubi |
CA1298451C (en) * | 1985-08-02 | 1992-04-07 | Hiromi Shigemoto | Surface-roughened film and sheet, and process for production and use thereof |
US4794680A (en) * | 1985-12-20 | 1989-01-03 | Union Carbide Corporation | Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members, method for producing same and method for working elongate members using the novel friction roll |
US5772941A (en) * | 1995-03-16 | 1998-06-30 | Bando Chemical Industries, Ltd. | Polyvinyl chloride resin sheets and production thereof |
US6673391B1 (en) * | 2002-08-09 | 2004-01-06 | Alcoa Inc. | Ceramic applicator device and method of use |
US6913714B2 (en) * | 2002-11-21 | 2005-07-05 | Bayer Materialscience Llc | Method of producing thermoplastic polycarbonate films having low optical retardation values |
DE102004044086A1 (de) * | 2004-09-09 | 2006-03-16 | Tesa Ag | Thermisch vernetzte Acrylat-Hotmelts |
US8580174B2 (en) * | 2006-12-29 | 2013-11-12 | Sabic Innovative Plastics Ip B.V. | Method for texturing polymeric films and articles comprising the same |
US7854870B2 (en) * | 2008-04-01 | 2010-12-21 | BAE Systems Tensy Lon H.P.M., Inc. | Method and apparatus for the production of high tenacity polyolefin sheet |
DE102008059050A1 (de) | 2008-11-26 | 2010-05-27 | Tesa Se | Thermisch vernetzende Polyacrylate und Verfahren zu deren Herstellung |
GB201307898D0 (en) * | 2012-06-14 | 2013-06-12 | Hexcel Composites Ltd | Improvements in composite materials |
JP6733234B2 (ja) * | 2015-03-23 | 2020-07-29 | 大日本印刷株式会社 | 熱転写受像シート用支持体の製造方法および熱転写受像シートの製造方法 |
KR102574554B1 (ko) * | 2015-06-12 | 2023-09-06 | 쓰리엠 이노베이티브 프로퍼티즈 캄파니 | 변형가능한 금속 롤을 이용한 액체 코팅 방법 및 장치 |
-
2018
- 2018-02-05 DE DE102018201684.4A patent/DE102018201684A1/de not_active Withdrawn
-
2019
- 2019-01-29 TW TW108103237A patent/TW201934206A/zh unknown
- 2019-02-04 EP EP19703677.5A patent/EP3749463A1/de active Pending
- 2019-02-04 US US16/967,231 patent/US20210078216A1/en not_active Abandoned
- 2019-02-04 WO PCT/EP2019/052675 patent/WO2019149944A1/de unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113373703A (zh) * | 2020-03-10 | 2021-09-10 | 东丽纤维研究所(中国)有限公司 | 一种墙面装饰用无纺材料 |
CN113373703B (zh) * | 2020-03-10 | 2024-03-19 | 东丽纤维研究所(中国)有限公司 | 一种墙面装饰用无纺材料 |
Also Published As
Publication number | Publication date |
---|---|
US20210078216A1 (en) | 2021-03-18 |
WO2019149944A1 (de) | 2019-08-08 |
DE102018201684A1 (de) | 2019-08-08 |
EP3749463A1 (de) | 2020-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6921729B2 (en) | Adhesive tape | |
CA2509900C (en) | Release compositions and articles made therefrom | |
EP2053110B1 (en) | Double-sided pressure-sensitive adhesive sheet and method for producing the same | |
US5954907A (en) | Process using electrostatic spraying for coating substrates with release coating compositions, pressure sensitive adhesives, and combinations thereof | |
TW201934206A (zh) | 壓延製程與後壓延製程中之結構化輥筒 | |
JPS62184080A (ja) | 感圧接着テ−プ | |
WO1996025469A1 (en) | Pressure-sensitive adhesive | |
TW200821369A (en) | Surface protecting film and optical film with surface protecting film | |
CN102762656B (zh) | 粘合剂组合物 | |
AU2011285969A1 (en) | Duct tape with foam film backing layer | |
EP3278984B1 (de) | Releaseliner mit unterschiedlicher oberflächenbeschichtung | |
KR20200007728A (ko) | 고형 epdm 러버를 기반으로 한 감압 접착제의 제조 | |
US20090280323A1 (en) | Use of a fixing aid | |
US20170137246A1 (en) | Adhesive tape and its use | |
JP6012617B2 (ja) | 押出成形可能なウレタン剥離コーティング | |
JPH07133468A (ja) | 粘着テープ | |
JP4142789B2 (ja) | カレンダー成形用樹脂組成物、フィルムおよび粘着テープまたはシート | |
US20190185719A1 (en) | Method for boosting the anchorage in the coating of a carrier with a solvent-free adhesive composition by superficial carrier heating by means of contact-area heat transfer | |
JP2001288278A (ja) | 高密度ポリエチレン樹脂からなる装飾・表示用基材フィルムとその製造方法 | |
JP2009167232A (ja) | 水性粘着剤組成物および粘着シート | |
JP2001151955A (ja) | 高密度ポリエチレン樹脂からなる装飾・表示用基材フィルムとその製造方法 | |
DD230006A1 (de) | Verfahren zur herstellung von selbstklebebaendern | |
DD230003A1 (de) | Verfahren zur herstellung von selbstklebebaendern | |
DE102008021742A1 (de) | Mineralölfreies Klebeband |