TWI303615B - Multiwall sack-like packaging medium - Google Patents

Abstract

A multilayer packaging medium or sack has a filler opening, an impermeable outer layer, a porous inner layer, and an overlap region or fold having a perforated film between the inner and outer layers, with an open passage over a portion of the length of the folded area communicating with the perforated portion. The packaging medium is especially useful for the packaging of pulverulent materials, in particular water sensitive or water soluble powders.

Description

1303615 九、發明說明： _ 【發明所屬之技術領域】 粉狀材料（例如：聚合物粉末）係裝入所謂之通風袋内送至市 場。在此情況下，係由裝袋機裝袋，該等裝袋機以產率高，且用 大量空氣將粉末流體化裝入袋内。此處，該空氣必須儘速離開該 袋。以前，係用牛皮紙製成之紙口袋，蓋因該所裝入之粉狀材料 存留在袋内時空氣會經由紙逸出。但，紙袋之缺點是：該等紙袋 • 承受飛沫及潮濕之程度並不適當且對機械裝載甚為敏感。 【先前技術】 為克服該等缺點，現在使用多壁通風袋，該等通風袋之内側 有一紙袋，該紙袋之外侧包以塑膠膜（通常為聚乙烯膜）。為確保 裝袋期間空氣快速逸出，包在紙袋外面之塑膠膜有孔（至少局部面 積）。所以’雖然機械強度較紙袋大幅增加，由於有孔面積大，水 氣之透入無法完全遏制。 鲁所以本發明之目的係發展一種封裝袋（尤其用以封裝粉末 者），在裝袋期間，該封裝袋可使空氣儘速逸出，且在儲存期間該 封裝袋儘可能有效地防止環境空氣再使所裝粉狀封裝物受潮，並 保護免受飛沫侵害。 【發明内容】 本發明之内容係封裝微粒材料（特別是粉狀材料) 所用之多 壁封裝袋。 【實施方式】 本發明之技術内容係-種多壁封裝袋！ ，該封裝袋係經適當 1303615 構形，俾其始終具有一寬大之前邊3及後邊2，該兩個邊係由窄 邊區4及5連接起來，該封裝袋係在上端6及下端7處加以封閉， 裝袋用之開口 8係位於上端6，具有—透氣材料所製内層9及不 透氣材料所製外壁10之封裝袋之特徵為·· 3)在前邊3及/或後邊2上，外壁1〇重疊在區域1;L上面之面 積高達整個面積之50%， b) 在重疊區域11内，外壁1〇之内層i〇a有孔， c) 在重疊區域11之邊緣I2及23處，相互重叠之兩層1〇a 及l〇b係藉助於接縫w及ls相互連接， d) 在邊緣12及13之一處或兩處，接缝係在區域16内中斷， 該區域涵蓋全長之1〇至50%。 内層9適當之透氣材料是：紙、或由人造纖維或天然纖維所 製編織物或非織物。其中以紙為佳，例如：重量密度為3〇至工2〇 公克/平方公尺（尤以60至9〇公克/平方公尺更佳）之傳統牛皮 紙。至於不透氣之外壁10，包裝界常用之塑膠膜類均適用，尤以 聚烯膜類更佳，例如：聚乙烯或聚丙烯膜類及聚氣乙稀膜類。膜 之厚度通常為20至200微米。 装袋時，該封裝袋1之形狀類似箱。其長度以3〇至12〇公 分為佳，尤以60至1〇〇公分更佳。其寬度以2〇至8〇公分為佳， 尤以40至60公分更佳。侧面部分之寬度以5至3〇公分為佳， 尤以10至20公分更佳。 1303615 封裝袋！上端之開口（裝袋開口）8之橫斷面最好呈圓形或正 -方形並具有適當尺寸’俾該封錄！可經由一裝袋喷嘴裝袋。通 ，常’其直徑以5至20公分較為適當。為封閉該袋開口 8之内 側通常塗以塑膠材料，尤以熱融性及/或熱塑性者（例如：聚已稀） 更佳。如此可藉助於超音波或加熱將該開口熔接起來。 内侧、透氣材料9係藉黏合作用與外側、不透氣材料工❽連 鲁接起來。紙内層9最好僅在上端δ處及下端7處與外壁塑膠膜黏 合在-起。在製造過程巾，程序舰適當選擇，該袋之各個層係 由另外之滾筒送到生產線並集中在—起。所製得者係—無終端之 管狀物’並可賴適當長度加⑽^隨後將諸終端加以招叠， 將空氣出口插人並加以黏合。最後，將—覆蓋片黏合在該袋之兩 端。 外壁！〇(通常為塑膠膜）在前邊3上或在後邊2上或在該兩 魯邊上與重疊區域U重疊高達前或後邊2、3總面積之5〇%。外壁 10最好僅重疊在兩個邊之一個邊上，尤以僅在後邊2上更佳，通 常該袋係搁置在該後邊2上。在一更合適之具體實施例中，該塑 膠膜重叠在魏長度上。該重疊區域H之大小最好達到各個邊總 面積之10至50%。 在該重疊區域11内，塑膠膜之内層l〇a有孔。孔之密度通 常為〇·5至5個孔/平方公分。孔可以在整個重疊區域玎或區域 之局部以針刺成。最好1〇至50%重疊區域丄丄之面積有孔。重疊 1303615 區域之整錄度上均有孔。尤简重疊區域之雜及 13保持 〇· 5至10公分之距離更佳，對重疊區域邊緣U (該邊緣係敞開者) 之距離以達2至10公分域。孔之大小、密度及面積主要視裝袋 細之空氣流通量必須有多高而定。視需求歧，精於此項技術 者可在上述範圍内將該等變數加以調節。 舉例言之，在該重疊區域之邊緣12及13處，用一黏合接縫 或溶焊接缝（14、15)將塑膠膜之内層1〇a及外廣咖連接起來。 為使因孔而逃逸之线得⑽去，—個邊躺碱處（尤以一個邊 更佳）之接合處加以中斷。通常，該接合處係在區域W (該區域涵 蓋10至5〇%之總長度）内加以中斷。該中斷部分以位於封裝袋1 之上半部為佳（尤以上三分之一部分更佳），蓋因裝袋期間殘留之 空氣係位於頂部。 利用該結構，儘管該等外壁係由塑膠製成，首先可保證的 疋’在裝袋綱空氣可快速離去。在齡細，已裝好之封裝袋 之固有重量將重疊區域内之開口封閉，其作肢··大氣中之水氣 或飛泳不能經由孔進入内部。 該封裝袋適於微粒材料（例如：顆粒類、纖維類、細粒或粗 粒粉末類）之運輸及儲存。朗裝袋制適於對水氣祕之材料。 其實例是：聚合物粉末類，尤其可在水巾再錄之聚合物粉末類 (分散粉末類），或其他高度分散之發石、水泥、石膏、含有水泥 或石膏之乾混合物類，例如：乾硬性水泥砂漿、粉末、動物飼料， 1303615 水溶性、粉狀物質類，例如：水泥增塑劑、稠化劑。 該袋可用常用之方法加以標示、印刷或加裝標籤類。 利用下列諸圖可複製本發明之合適改良品類。 第1圖所示係空袋狀況下袋1之透視圖。 第2圖所示係第1圖内區域JJ之放大部分詳圖。 第1圖所示係一空袋狀況下袋i之透視圖，其中包括：一第 一寬邊2 (後邊）及一第二寬邊3 (前邊）、一第一窄邊區4及一第 二窄邊區5。該袋係在終端6及7處呈封閉狀態，在終端S (上端） 區域内設有用以裝袋之裝袋口 8以容納-裝袋管（此處未經顯 示）〇 斷’形成一錄出〇 17。在靠近接缝15處，重疊局部區域r 之外壁内層！0a有孔18，該孔18可使來自袋丄内部之空氣通力 一管道19(由重疊外壁區域咖及挪與重疊部分接缝14及以 如第2圖内可看到者：該袋1具有-透氣内層9(該内層9 包以不透氣之外壁10)。舉例言之，該外壁1Q係經設計為：重叠 在第-寬邊2之區域U内，重疊部分之邊緣12及13係藉助於 接縫I4及1S (例如·炫合接缝類）、以氣密方式與外壁W接合。 在此狀況下，接縫14最好在區域16上三分之-部分加以中 所形成) ，並經由空氣出 口 17投入大氣空氣中。 1303615 【圖式簡單說明】 第1圖所示係空袋狀況下袋1之透視圖。 第2圖所示係第1圖内區域Π之放大部分詳圖。 【主要元件符號說明】 1 封裝袋 13 邊緣 2 第一寬邊（後邊) 14 黏合接缝 3 第二寬邊（前邊） 15 熔焊接缝 4 第一窄邊區 16 中斷區 5 第二窄邊區 17 空氣出口 6 上端 18 孔 7 下端 19 管道 8 裝袋口 9 紙（透氣）内層 10 不透氣外壁 10a外壁内層 10b外壁外層 11 重疊區域 12 邊緣 111303615 IX. Description of the invention: _ [Technical field to which the invention pertains] Powdery materials (for example, polymer powder) are placed in a so-called ventilated bag and sent to the market. In this case, the bagging machine packs the bags in a high yield and fluidizes the powder into the bag with a large amount of air. Here, the air must leave the bag as soon as possible. Previously, a paper pocket made of kraft paper was used, and the air escaped through the paper as the powdered material contained therein remained in the bag. However, the disadvantage of paper bags is that they are not suitable for exposure to droplets and moisture and are sensitive to mechanical loading. [Prior Art] To overcome these disadvantages, a multi-walled ventilating bag is now used, which has a paper bag on the inner side of the bag, and a plastic film (usually a polyethylene film) is wrapped on the outer side of the bag. To ensure rapid air escape during bagging, the plastic film wrapped around the paper bag has holes (at least partial area). Therefore, although the mechanical strength is greatly increased compared with the paper bag, due to the large hole area, the penetration of moisture cannot be completely contained. Therefore, the object of the present invention is to develop a package bag (especially for encapsulating a powder) which allows air to escape as quickly as possible during bagging and which prevents the ambient air from being as effective as possible during storage. The powdered package is then damp and protected from droplets. SUMMARY OF THE INVENTION The present invention is directed to a multi-walled package for encapsulating particulate materials, particularly powdered materials. [Embodiment] The technical content of the present invention is a multi-wall package bag! The package is configured by a suitable 1303615, which has a wide front edge 3 and a rear edge 2, which are joined by narrow side regions 4 and 5, which are attached at the upper end 6 and the lower end 7 The opening 8 for bagging is located at the upper end 6, and the inner layer 9 made of a gas permeable material and the outer wall 10 made of a gas impermeable material are characterized by a 3) front side 3 and/or rear side 2, outer wall 1〇 overlaps the area 1; the area above L is up to 50% of the entire area, b) in the overlap area 11, the inner layer i〇a of the outer wall 1 has a hole, c) at the edges I2 and 23 of the overlap area 11, The two layers 1〇a and l〇b which are overlapped each other are connected to each other by means of seams w and ls, d) at one or both of the edges 12 and 13, the seam is interrupted in the region 16, which covers the full length 1 to 50%. Suitable breathable materials for the inner layer 9 are: paper, or woven or non-woven fabrics made of rayon or natural fibers. Among them, paper is preferred, for example, a conventional kraft paper having a weight density of 3 Torr to 2 gram/m2 (especially preferably 60 to 9 gram/m2). As for the non-breathable outer wall 10, the plastic film commonly used in the packaging industry is suitable, especially the polyene film, such as polyethylene or polypropylene film and polyethylene film. The thickness of the film is usually from 20 to 200 μm. When the bag is bagged, the package bag 1 is shaped like a box. The length is preferably from 3 to 12 cm, more preferably from 60 to 1 cm. The width is preferably from 2 to 8 cm, more preferably from 40 to 60 cm. The width of the side portion is preferably 5 to 3 cm, more preferably 10 to 20 cm. 1303615 Packaging bag! The cross section of the upper end opening (bag opening) 8 is preferably circular or square-shaped and has an appropriate size 俾 the seal! The bag can be bagged through a bagging nozzle. It is more appropriate to have a diameter of 5 to 20 cm. The inner side of the opening 8 for closing the bag is usually coated with a plastic material, especially those which are hot meltable and/or thermoplastic (for example, poly thinned). The opening can thus be welded by means of ultrasound or heating. The inner side and the venting material 9 are joined together by the adhesive and the outer and air-impermeable material. Preferably, the inner layer 9 of the paper is bonded to the outer wall plastic film only at the upper end δ and at the lower end 7. In the manufacturing process towel, the program ship is appropriately selected, and the various layers of the bag are sent to the production line by another roller and concentrated. The resulting system is a tube without a terminal and can be folded over a suitable length (10). The terminals are then folded, and the air outlet is inserted and bonded. Finally, the cover sheet is bonded to both ends of the bag. Outer wall! The crucible (usually a plastic film) overlaps the overlap region U on the front side 3 or on the back side 2 or on the two sides of the overlap by up to 5 % of the total area of the front or back sides 2, 3. The outer wall 10 preferably overlaps only one of the two sides, especially on the rear side 2, and the bag is usually placed on the rear side 2. In a more suitable embodiment, the plastic film overlaps the length of the wei. The overlap region H preferably has a size of 10 to 50% of the total area of each side. In the overlap region 11, the inner layer 10a of the plastic film has a hole. The density of the holes is usually from 5 to 5 holes per square centimeter. The holes may be needled throughout the overlapping area or portions of the area. Preferably, there is a hole in the area of 1 to 50% overlap area. There is a hole in the degree of overlap of the 1303615 area. It is better to have a distance of 5 to 10 cm, and the distance to the edge U of the overlapping area (the edge is open) is 2 to 10 cm. The size, density and area of the hole are mainly determined by how high the air volume must be in the bag. Depending on the needs, those skilled in the art can adjust these variables within the above range. For example, at the edges 12 and 13 of the overlap region, the inner layer 1A of the plastic film and the outer wide coffee are joined by a bonding seam or a weld seam (14, 15). In order to make the line that escapes due to the hole (10), the joint at the side of the base (especially a better side) is interrupted. Typically, the joint is interrupted in the region W (which covers a total length of 10 to 5%). The interruption is preferably located in the upper half of the package 1 (especially the upper third portion is better), and the air remaining in the cover during the bagging is at the top. With this structure, although the outer walls are made of plastic, the first guaranteed 疋' can quickly leave the bagging air. In the case of a small, self-contained package, the inherent weight of the package is closed by the opening in the overlap region, and the water or the air in the air cannot enter the interior through the hole. The package is suitable for the transport and storage of particulate materials such as granules, fibers, fines or coarse powders. Lang bagging is suitable for materials that are watery and secret. Examples of this are: polymer powders, especially polymer powders (dispersed powders) re-recorded in water towels, or other highly dispersed stones, cement, gypsum, dry mixtures containing cement or gypsum, for example: Dry hard cement mortar, powder, animal feed, 1303615 Water-soluble, powdery substances, such as cement plasticizers, thickeners. The bag can be labeled, printed or retrofitted in a conventional manner. Suitable modifications of the invention can be reproduced using the following figures. Figure 1 is a perspective view of the bag 1 in an empty bag condition. Fig. 2 is a detailed view showing an enlarged portion of the area JJ in Fig. 1. Figure 1 is a perspective view of the bag i in an empty bag condition, including: a first wide side 2 (back side) and a second wide side 3 (front side), a first narrow side area 4 and a second narrow Border area 5. The bag is closed at the terminals 6 and 7, and a bag opening 8 for bagging is provided in the terminal S (upper end) area to accommodate the bagging tube (not shown here) to form a record. Out of 17. Near the seam 15, overlap the inner layer of the outer wall of the local area r! 0a has a hole 18 which allows the air from the inside of the pocket to pass through a conduit 19 (by overlapping the outer wall region and the overlapping portion 14 and as seen in Figure 2: the bag 1 has a gas permeable inner layer 9 (the inner layer 9 is covered with a gas impermeable outer wall 10). For example, the outer wall 1Q is designed to overlap in the region U of the first wide side 2, and the edges 12 and 13 of the overlapping portion are In the case of seams I4 and 1S (for example, dazzle joints), the outer wall W is joined in an airtight manner. In this case, the seam 14 is preferably formed in a portion of the region 16 in a portion of the portion 16) It is also introduced into the atmospheric air via the air outlet 17. 1303615 [Simple description of the drawing] Fig. 1 is a perspective view of the bag 1 in an empty bag condition. Figure 2 is a detailed view of the enlarged portion of the area in Figure 1. [Main component symbol description] 1 Package bag 13 Edge 2 First wide side (back side) 14 Bonded seam 3 Second wide side (front side) 15 Welded joint 4 First narrow side area 16 Interrupted area 5 Second narrow side area 17 Air Outlet 6 Upper end 18 Hole 7 Lower end 19 Pipe 8 Bag opening 9 Paper (breathable) Inner layer 10 Airtight outer wall 10a Outer wall Inner layer 10b Outer wall Outer layer 11 Overlapping area 12 Edge 11

Claims (1)

^專利申諳案^Patent application ㉟代_ 圍替換本（96年5月） 十、申請專利範圍： 1· 一種多壁之封裝袋，該封裝袋係經適當構形，俾 寬大之前邊及後邊，該兩個邊係由窄小邊連接起來，該封裂袋 係在上端及下端處加以封閉，裝袋用之裝袋口係在上端處 有一透氣材料所製内層及不透氣材料所製外壁之封裝袋之特 徵為： ^ (a) 在前邊及/或後邊上，外壁重疊在區域上面之面積高達整 個面積之50%; 、 i (b) 在重疊區域内，外壁之内層有孔； (c) 在重疊區域之邊緣處，相互重疊之兩層係藉助於接縫相 連接；及 (d) 在邊緣之一處或兩處，接縫係在區域内中斷，該區 全長之10至50%。 盈 2·如請求項1之封裝袋，其中該外壁僅重疊在後邊上。 3’如請求項1或2之封裝袋，其中該外壁重疊在整個長度上。 4.=請求項！或2之封裝袋，其中重疊區域之1()至篇面積有 5·^求項1或2之封裝袋’其中該中斷區係配置在職袋之上 6·^求項i或2之封裝袋’其中内層係由 4哉維所製之編織物或非織物所喊。/ σ成雜類或天 ί ^求項1或2之難袋，其中該等塑膠膜係用作不透氣外壁。 之運輪袋之用途’係用於微粒材料 粉末。成储存’細拉材枓例如是顆粒、纖維、或細粒或粗粒 如靖求項8夕田％ 料，扣π A用途，翻於對潮濕敏歧選自—個族群之材 A舰群包括：聚合物粉末、可在水中再分散之聚合物粉末材 高度分散之砍石、水泥、f骨、含有水泥或石膏之乾混合物， 例如乾破性水泥砂漿’粉末、動物飼料、水溶性粉末狀物質， 例如水派增塑劑、稠化劑。35 generations _ Wai replacement (May 96) Ten, the scope of application for patents: 1 · A multi-wall encapsulation bag, the package is properly configured, the width of the front side and the back side, the two sides are narrow The small edges are connected, and the sealing bag is closed at the upper end and the lower end. The bagging port for bagging is characterized by: an inner layer made of a gas permeable material at the upper end and a package bag made of an outer wall made of a gas impermeable material: (a) On the front and/or rear side, the outer wall overlaps the area above the area by up to 50% of the entire area; i, (b) in the overlap area, the inner layer of the outer wall has holes; (c) at the edge of the overlap area The two layers that overlap each other are joined by means of seams; and (d) at one or both of the edges, the seam is interrupted within the area, which is 10 to 50% of the total length of the joint. 2. The package of claim 1, wherein the outer wall only overlaps the rear side. 3' The package of claim 1 or 2, wherein the outer wall overlaps the entire length. 4.=Request item! Or 2 package bags, wherein the overlap area 1 () to the article area has 5 · ^ item 1 or 2 package bag 'where the interruption zone is placed on the bag 6 · ^ item i or 2 package bag 'The inner layer is shouted by a braid or non-woven fabric made of 4 inch. / σ is a miscellaneous or a climatic bag of claim 1 or 2, wherein the plastic film is used as an airtight outer wall. The use of the wheel bag is used for particulate material powder. In the case of storage, the fine material is, for example, granules, fibers, or fine-grained or coarse-grained materials such as 靖 项 8 夕 夕 , , , , , 用途 用途 用途 用途 用途 用途 用途 用途 π π π π π π π π π π : polymer powder, polymer powder material which can be redispersed in water, highly dispersed chopped stone, cement, f bone, dry mixture containing cement or gypsum, such as dry-breaking cement mortar' powder, animal feed, water-soluble powder Substances, such as water-based plasticizers, thickeners.