WO2021110132A1 - 一种打包包装膜及其制备方法 - Google Patents

一种打包包装膜及其制备方法 Download PDF

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WO2021110132A1
WO2021110132A1 PCT/CN2020/133856 CN2020133856W WO2021110132A1 WO 2021110132 A1 WO2021110132 A1 WO 2021110132A1 CN 2020133856 W CN2020133856 W CN 2020133856W WO 2021110132 A1 WO2021110132 A1 WO 2021110132A1
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layer
film
folding
adhesive
folded
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PCT/CN2020/133856
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English (en)
French (fr)
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陈利华
刘娴
李多艺
冉强
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安徽精良同硕塑膜科技有限公司
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Publication of WO2021110132A1 publication Critical patent/WO2021110132A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets

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  • the invention relates to the technical field of films, in particular to a packaging film and a preparation method thereof.
  • Packing film is one of the commonly used packing materials for agricultural harvesting operations. It has a soft texture and a large single packing volume, so it is suitable for in-situ packing of cotton and other economic crops.
  • the packing machine uses the packing film to wrap the package, and then automatically separates the packing film. The end of the packing film is automatically sealed by the double-sided automatic separation, which completes a packing process.
  • the in-situ packaging of cotton and other economic crops has higher requirements for packaging film. It not only requires high mechanical strength and strong creep resistance, in order to ensure that the packaged packaging film can wrap enough cotton and other economic crops, and it is not easy. Broken and fried bags; and it needs strong puncture resistance and good anti-aging performance to ensure that the membrane package is not easily damaged when working in the ground and can be stored for a long period of time.
  • the packaging films for cotton and other economic crops are imported, the cost is very high, and easy to be restricted by various foreign factors; while the cotton and other economic crop packaging films produced by domestic manufacturers have poor performance and cannot meet the requirements. .
  • the purpose of the present invention is to provide a packaging film to solve the above defects.
  • a packaging film characterized in that it comprises a leading film 1, a viscous film 2, a general film 3, a live connection section 4 and a dead connection section 5.
  • the viscous film 2 and the general film 3 are connected by a dead connection section 5 Together to form a membrane package, the membrane packages are provided with a number of membrane packages, and the membrane packages are all connected in turn by the joint section 4, and the guide film 1 is connected to the viscous membrane 2 of the first membrane package through the joint section 4 Connected, non-stick edge strips 21 are provided on both sides of the adhesive film 2, machine identification marks 6 are provided on the adhesive film 2, and arc-shaped notches 7 are provided on both sides of the articulated section 4 .
  • edges 31 are provided on both sides of the general film 3.
  • the arc-shaped notches 7 at the articulating section 4 between the guiding film 1 and the viscous film 2 are arranged on the articulating section 4, and on both sides of the viscous film 2 and the guiding film 1 connected to the articulating section 4 On the edge.
  • the arc-shaped notches 7 at the live joint section 4 between the film packs are arranged on the live joint section 4 and the edges of both sides of the viscous film 2 and the general film 3 connected to the live joint section 4.
  • the dead connecting section 5 is made of single-sided tape.
  • the articulated section 4 includes a first folded layer 41, a second folded layer 42, a third folded layer 43, and an adhesive layer 44.
  • the first folded layer 41, the second folded layer 42, and the third folded layer The layers 43 are arranged in order from top to bottom, the adhesive layer 44 is arranged between the first folded layer 41 and the second folded layer 42, and one end of the first folded layer 41 is connected to the adhesive film 2, and the second folded layer
  • the layer 42 is connected end to end with the third folded layer 43, and the other end of the third folded layer 43 is connected with the general film 3 or the guiding film 1.
  • the adhesion between the adhesive layer 44 and the first folding layer 41 and the second folding layer 42 is differentiated, and both ends of the first folding layer 41 and the second folding layer 42 are set to be disconnected. , Or use the fragility setting to connect together.
  • the differential setting is that the two sides of the adhesive layer 44 are made by different technologies, so that the adhesiveness of the two sides is differentiated, and the adhesiveness between the adhesive layer 44 and the first folded layer 41 is greater than The adhesiveness between the adhesive layer 44 and the second folded layer 42.
  • the differential setting is: the first folding layer 41 and the second folding layer 42 in contact with the adhesive layer 44 are made of different materials, or the first folding layer 41, the second folding layer 42 and the The contact side of the adhesive layer 44 adopts different processing methods, so that the adhesiveness between the adhesive layer 44 and the first folding layer 41 and the second folding layer 42 shows a differentiated performance.
  • the adhesive layer 44 and the second folded layer 42 adopt a peelable technology to form a bond.
  • the articulated section 4 includes a first folded layer 41, a second folded layer 42, a third folded layer 43, a fourth folded layer 44, a fifth folded layer 45, and an adhesive layer 46.
  • the first folded layer The layer 41, the fourth folded layer 44, the third folded layer 43, the second folded layer 42, and the fifth folded layer 45 are arranged in order from top to bottom.
  • the adhesive layer 46 is arranged on the first folded layer 41 and the fourth folded layer.
  • the adhesive film 2 the first folded layer 41, and the second folded layer 42 are connected end to end in turn.
  • the fifth folding layer 45 is connected end to end with the general film 3 or the guiding film 1 in turn.
  • the adhesion between the adhesive layer 46 and the first folding layer 41 and the fourth folding layer 44, and the adhesion between the adhesive layer 46 and the third folding layer 43 and the second folding layer 42 respectively are equal Differential settings are adopted; the two ends of the second folding layer 42 and the third folding layer 43 are connected together in a disconnected setting or a fragile setting.
  • the differential setting is such that the viscosity of the two sides of the adhesive layer 46 is differentiated, and the viscosity between the adhesive layer 46 and the first folded layer 41 is greater than that between the adhesive layer 46 and the fourth folded layer.
  • the adhesiveness between the layers 44; the adhesiveness between the adhesive layer 46 and the second folded layer 42 is greater than the adhesiveness between the adhesive layer 46 and the third folded layer 43.
  • the adhesive layer 46 and the third folded layer 43 and the fourth folded layer 44 are all bonded by a peelable technology.
  • the present invention also provides a method for preparing the packaging film described in the above technical solution, which includes the following steps:
  • the prepared long roll of adhesive film is unrolled to a fixed length as the adhesive film 2, and the end of the general film 3 at the end of step S4 is bonded through the joint section 4, and the general film 3 bonded in this step is bonded.
  • the packaging film of the present invention and the preparation method thereof by providing a leading film at the front end of several film packages, the several film packages can be wound on the packaging film reel through the film leading, which is convenient for winding; , And the flexible joint section is set between the film package and the film package to facilitate the connection of several film packages, and when the two film packages are used in packaging, the two film packages can be separated in time, and at the same time, it can also ensure the adhesion and stickiness of the film package after packaging.
  • a dead joint section is set between the viscous membrane and the normal membrane, which can connect the viscous membrane and the normal membrane together, which is convenient to use, firm and reliable;
  • Both sides of the adhesive film are provided with non-stick edge strips, which not only facilitates unwinding, but also avoids the adhesion of cotton and other economic crops on both sides of the adhesive film; arcs are provided on both sides of the articulated section The notch can facilitate the adhesion of the film package after packaging, with good adhesion, firmness and stability.
  • the packaging film prepared by the present invention has high mechanical strength, strong creep resistance, good puncture resistance, high bonding performance, is not easy to loose and fried, is not easy to age, has high cost performance, can replace imports, and is widely applicable to cotton,
  • the packaging of cash crops such as forage grass and rice straw has strong practicability and is convenient to use.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • Fig. 2 is a structural side view of the live connection section between the membrane packages of embodiment 1 of the present invention
  • Fig. 3 is a structural side view of the live connection section between the membrane packages of embodiment 2 of the present invention.
  • Fig. 4 is a structural side view of the live connection section between the membrane packages of embodiment 3 of the present invention.
  • Fig. 5 is a structural side view of the live connection section between the membrane packages of embodiment 4 of the present invention.
  • a packaging film includes a lead film 1, a viscous film 2, a general film 3, a live connection section 4, and a dead joint section 5.
  • the dead joint section 5 is made of single-sided tape with a certain length
  • the viscous film 2 and the general film 3 of a certain length are bonded together by the dead joint section 5 to form a unit that completes a complete film package.
  • One film package is just used to pack cotton and other materials into a cylinder
  • a cylindrical package with several film packages, and the film packages are all connected in turn by a joint section 4.
  • the guiding film 1 is connected to the viscous film 2 of the first film package through the joint section 4, and several films
  • the package, the articulated section 4, and the leading film 1 are connected to the roll and form a roll of packaging film.
  • non-stick edge strips 21 are provided on both sides of the adhesive film 2, and the non-stick edge strips 21 can be formed by directly sprinkling powder on both sides of the adhesive film 2 to isolate the viscosity. During the packing process of cotton and other materials, the presence of the non-stick edge strip 21 can avoid the adhesion of the two sides of the adhesive film to the cotton and other materials on both sides of the film bag.
  • the adhesive film 2 is provided with a machine identification mark 6.
  • the machine recognizes the machine identification mark 6 and stops the supply of the packaging film, and the packaging machine is packaging
  • the cylindrical material package continues to rotate and uses the packaging film, so that the flexible joint section 4 between the two film packages is stretched by tension, 180 degrees peeled and separated, to be torn, and the film package is used independently.
  • edging 31 is provided on both sides of the general film 3.
  • the edging 31 can form a shield on both ends of the cylindrical material bag to prevent dryness in the ground.
  • the branches and leaves are glued to the material in the material bag, and at the same time, the side end of the cylindrical material bag can be wrapped to prevent the bag from being sent, loosened, and fried.
  • arc-shaped notches 7 are provided on both sides of the articulated section 4, and the arc-shaped recesses 7 at the articulated section 4 between the guiding film 1 and the viscous film 2 are provided in the articulated section 4 and connected to the articulated section.
  • the arc-shaped notches 7 at the joint section 4 between the membrane packs are arranged in the joint section 4 and the viscous film 2 connected with the joint section 4
  • Hepu Membrane 3 it is convenient to use at the beginning and end of each film package. It is convenient for the traction of the packaging film when the film package is used. It is convenient for bonding and bonding when the film package is used at the end. Good performance, high viscosity, firmness and stability.
  • the articulated section 4 includes a first folded layer 41, a second folded layer 42, a third folded layer 43, an adhesive layer 44, a first folded layer 41, a second folded layer 42, and a third folded layer.
  • the layers 43 are arranged in order from top to bottom, the adhesive layer 44 is arranged between the first folded layer 41 and the second folded layer 42, one end of the first folded layer 41 is connected to the adhesive film 2, and the second folded layer 42 is connected to the third folded layer.
  • Layer 43 is connected end to end.
  • the articulated section 4 located between each membrane pack, the other end of the third folded layer 43 is connected to the general membrane 3; and the articulated section 4 between the guiding membrane 1 and the viscous membrane 2 of the first membrane pack, The other end of the third folded layer 43 is connected with the guiding film 1.
  • the adhesiveness between the adhesive layer 44 and the first folding layer 41 and the second folding layer 42 is set differently, which is mainly achieved in two ways.
  • the two sides of the adhesive layer 44 are made by different technologies, so that the adhesiveness of the two sides is differentiated, and the adhesiveness between the adhesive layer 44 and the first folded layer 41 is much greater than that between the adhesive layer 44 and the first folded layer.
  • the adhesion between the two folded layers 42; second, the first folded layer 41 and the second folded layer 42 that are in contact with the adhesive layer 44 are made of different materials, or the first folded layer 41 and the second folded layer 42
  • the side in contact with the adhesive layer 44 adopts different treatment methods, so that the adhesive layer 44 and the first folded layer 41 and the second folded layer 42 have a differentiated performance; the adhesive layer 44 and the second folded layer 42 have a differentiated performance.
  • a peelable technique is used to form adhesion between the folded layers 42.
  • the two ends of the first folding layer 41 and the second folding layer 42 are connected together by a fragile arrangement. Under the action of a certain external force, the connection between the first folding layer 41 and the second folding layer 42 is easily broken, thereby Realize the separation between two membrane packages.
  • the method for preparing a packaging film of the present invention includes the following steps:
  • the multi-layer co-extrusion blow molding method is used to prepare a long roll of general film, and the multi-layer co-extrusion uses self-adhesive technology to prepare a long roll of viscous film for use; at the same time, the machine identification mark 6 is prepared for use.
  • the prepared long roll of general film is unrolled to a fixed length as the leading film 1 of each roll of packaging film, and rolled and placed on a reel.
  • the prepared long roll of adhesive film is unrolled to a fixed length as the adhesive film 2, and the end of the general film 3 at the end of step S4 is bonded through the joint section 4, and the general film 3 bonded in this step is bonded.
  • a packaging film and its preparation process are the same as in Example 1, except that: as shown in Figure 3, in the articulated section 4, both ends of the first folding layer 41 and the second folding layer 42 are disconnected. Setting, under the action of a certain external force, the adhesive layer 44 is separated from the second folded layer 42 while the adhesive layer 44 stays on the first folded layer 41 to realize the separation between the two membrane packages.
  • a packaging film and its preparation process are the same as in Example 1, except that:
  • the articulated section 4 includes a first folded layer 41, a second folded layer 42, a third folded layer 43, a fourth folded layer 44, a fifth folded layer 45, an adhesive layer 46, and a first folded layer 41.
  • the fourth folding layer 44, the third folding layer 43, the second folding layer 42, and the fifth folding layer 45 are arranged in order from top to bottom, and the adhesive layer 46 is arranged on the first folding layer 41 and the fourth folding layer 44, Between the third folded layer 43 and the second folded layer 42, the adhesive film 2, the first folded layer 41, and the second folded layer 42 are connected end to end in turn, the third folded layer 43, the fourth folded layer 44, and the fifth folded layer 45 Followed by end to end.
  • the articulated section 4 located between each membrane pack, the other end of the fifth folded layer 45 is connected to the general membrane 3; and the articulated section 4 between the guiding membrane 1 and the viscous membrane 2 of the first membrane pack, The other end of the fifth folded layer 45 is connected with the guiding film 1.
  • the adhesiveness between the adhesive layer 46 and the first and fourth folding layers 41 and 44, respectively, and the adhesiveness between the adhesive layer 46 and the third and second folding layers 43 and 42 respectively Differential settings are adopted, so that the viscosity of the two sides of the adhesive layer 46 is differentiated, and the viscosity between the adhesive layer 46 and the first folded layer 41 is much greater than that between the adhesive layer 46 and the fourth folded layer 44
  • the adhesiveness between the adhesive layer 46 and the second folded layer 42 is far greater than the adhesiveness between the adhesive layer 46 and the third folded layer 43.
  • the adhesive layer 46 and the third folded layer 43 and the fourth folded layer 44 are all bonded by peeling technology.
  • the two ends of the second folding layer 42 and the third folding layer 43 are connected together by a fragile arrangement. Under the action of a certain external force, the connection between the second folding layer 42 and the third folding layer 43 is easily broken, thereby Realize the separation between two membrane packages.
  • a packaging film and its preparation process are the same as in Example 3, except that: as shown in FIG. 5, in the articulated section 4, the two ends of the second folding layer 42 and the third folding layer 43 are disconnected. Set, under the action of a certain external force, the adhesive layer 46 is separated from the third folding layer 43 and the fourth folding layer 44, while the adhesive layer 44 stays on the first folding layer 41 and the second folding layer 42 to achieve Separation between two membrane packages.

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Abstract

一种打包包装膜及其制备方法，打包包装膜包括引膜（1）、粘性膜（2）、普膜（3）、活接段（4）和死接段（5），粘性膜（2）、普膜（3）之间通过死接段（5）连接在一起形成一个膜包，膜包设置有若干个且膜包之间均通过活接段（4）依次相连，引膜（1）通过活接段（4）与第一个膜包的粘性膜（2）相连接，粘性膜（2）两侧边沿处均设置有不粘型边条（21），粘性膜（2）上设置有机器识别标志（6），活接段（4）两侧均设置有弧形凹口（7）。该打包包装膜机械强度大，抗蠕变能力强，抗穿刺性能好，粘接性能高，不易松包、炸包，不易老化，性价比高，具有较强的实用性，使用方便。

Description

一种打包包装膜及其制备方法
本申请要求于2019年12月4日提交中国专利局、申请号为CN201911225380.8、发明名称为“一种打包包装膜及其制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种涉及薄膜技术领域，具体为一种打包包装膜及其制备方法。
背景技术
打包膜是农业收割作业常用的打包材料之一，其质地柔软，单次打包量大，因而适用于棉花等经济作物的就地包装。在打包时，打包机利用打包膜将包装物包裹好，然后再自动分离打包膜，打包膜尾部由自动分离的双面自动封口，即完成一个打包过程。
而棉花等经济作物的就地包装，对打包膜的要求较高，不仅需要机械强度大、抗蠕变能力强，才能保证打包好的包装膜能够包裹足够多的棉花等经济作物，且不易破包、炸包；而且需要抗穿刺能力强，防老化性能好，才能保证在地里作业时，以及能够在存储足量长的时间内，膜包不易破损。目前，棉花等经济作物的打包膜均采用进口，费用非常高，而且易受国外各种因素的限制；而国内厂家生产的棉花等经济作物打包膜，性能较差，又不能够达到要求。
发明内容
本发明的目的在于：提供一种打包包装膜，以解决以上缺陷。
为了实现上述目的，本发明提供如下技术方案：
一种打包包装膜，其特征在于，包括引膜1、粘性膜2、普膜3、活接段4和死接段5，所述粘性膜2、普膜3之间通过死接段5连接在一起形成一个膜包，所述膜包设置有若干个且膜包之间均通过活接段4依次相连，所述引膜1通过活接段4与第一个膜包的粘性膜2相连接，所述粘性膜2两侧边沿处均设置有不粘型边条21，所述粘性膜2上设置有机器识别标志6，所述活接段4两侧均设置有弧形凹口7。
优选地，所述普膜3两侧边沿处均设置有包边31。
优选地，所述引膜1与粘性膜2之间的活接段4处的弧形凹口7设置在活接段4、以及与活接段4连接的粘性膜2和引膜1两侧边沿上。
优选地，所述膜包之间的活接段4处的弧形凹口7设置在活接段4、以及与活接段4连接的粘性膜2和普膜3两侧边沿上。
优选地，所述死接段5采用单面胶带制作。
优选地，所述活接段4包括第一折叠层41、第二折叠层42、第三折叠层43、粘胶层44，所述第一折叠层41、第二折叠层42、第三折叠层43自上而下依次设置，所述粘胶层44设置在第一折叠层41与第二折叠层42之间，所述第一折叠层41一端与粘性膜2相连，所述第二折叠层42与第三折叠层43首尾相连，所述第三折叠层43另一端与普膜3或引膜1相连。
优选地，所述粘胶层44分别与第一折叠层41、第二折叠层42之间的粘性采用差异化设置，所述第一折叠层41、第二折叠层42两端采用断开设置、或采用易断性设置连接在一起。
优选地，所述差异化设置为将粘胶层44双面采用不同技术制成，使其两面的粘性呈差异化表现，且所述粘胶层44与第一折叠层41之间的粘性大于粘胶层44与第二折叠层42之间的粘性。
优选地，所述差异化设置为：将与粘胶层44相接触的第一折叠层41、第二折叠层42采用不同的材质制成，或者第一折叠层41、第二折叠层42与粘胶层44相接触的的一面采用不同的处理方法，使粘胶层44与第一折叠层41、第二折叠层42之间的粘性呈差异化表现。
优选地，所述粘胶层44与第二折叠层42之间采用可剥离技术形成粘合。
优选地，所述活接段4包括第一折叠层41、第二折叠层42、第三折叠层43、第四折叠层44、第五折叠层45、粘胶层46，所述第一折叠层41、第四折叠层44、第三折叠层43、第二折叠层42、第五折叠层45自上而下依次设置，所述粘胶层46设置在第一折叠层41与第四折叠层44、第三折叠层43与第二折叠层42之间，所述粘性膜2、第一折叠层41、第二折叠层42依次首尾相连，所述第三折叠层43、第四折叠层44、第五折 叠层45、与普膜3或引膜1依次首尾相连。
优选地，所述粘胶层46分别与第一折叠层41、第四折叠层44之间的粘性，粘胶层46分别与第三折叠层43、第二折叠层42之间的粘性，均采用差异化设置；所述第二折叠层42、第三折叠层43两端采用断开设置、或采用易断性设置连接在一起。
优选地，所述差异化设置为使粘胶层46的两面的粘性呈差异化表现，并且所述粘胶层46与第一折叠层41之间的粘性，大于粘胶层46与第四折叠层44之间的粘性；所述粘胶层46与第二折叠层42之间的粘性，大于粘胶层46与第三折叠层43之间的粘性。
优选地，所述粘胶层46与第三折叠层43、第四折叠层44之间均采用可剥离技术形成粘合。
本发明还提供了一种上述技术方案所述的打包包装膜的制备方法，包括以下步骤：
S1、采用多层共挤吹塑法制备成长卷的普膜，备用；采用多层共挤用自粘技术制备成长卷的粘性膜，备用；同时，制备好机器识别标志6，备用；
S2、将制备好的长卷的普膜，放卷定长作为每卷打包包装膜的引膜1，并卷和在卷轴上；
S3、将制备好的长卷的粘性膜，放卷定长作为粘性膜2，并通过活接段4与卷轴上的引膜1形成粘接，并对引膜1与粘性膜2之间的活接段4的两端处进行剪切，使在活接段4、以及与活接段4连接的粘性膜2和引膜1两侧边沿上均制成弧形凹口7；再对粘性膜2的两侧边沿处撒上粉末来隔绝粘性，制成不粘型边条21；最后在粘性膜2上靠近活接段4处安装固定好机器识别标志6；
S4、将制备好的长卷的普膜，放卷定长作为普膜3，并通过死接段5与粘性膜2的末端形成粘接；
S5、将制备好的长卷的粘性膜，放卷定长作为粘性膜2，并通过活接段4与S4步骤最后的普膜3的末端形成粘接，并对本步骤中粘接的普膜3与粘性膜2之间的活接段4的两端处进行剪切，使在活接段4、以及与活接段4连接的粘性膜2和普膜3两侧边沿上均制成弧形凹口7；再对粘 性膜2的两侧边沿处撒上粉末来隔绝粘性，制成不粘型边条21；最后在本步骤放卷的粘性膜2上靠近活接段4处安装固定好机器识别标志6；
S6、重复S4-S5步骤，使引膜1后端粘接有若干个膜包，并卷起在转轴上，从而制作成一整卷打包包装膜。
本发明的有益效果在于：
本发明打包包装膜及其制备方法，通过在若干膜包的前端设置有一个引膜，通过引膜能够将若干膜包收卷在打包膜卷轴上，方便收卷；在引膜与膜包、以及膜包与膜包之间设置活接段，方便若干膜包的连接，而且在打包使用时，两膜包之间能够及时分离，同时也能够保证打包好后膜包的粘合，粘性好，牢固稳定，不易炸包、破包，储存时间长，方便储存；在粘性膜、普膜之间设置死接段，能够使粘性膜、普膜连接在一起，使用方便，牢固可靠；在粘性膜两侧边沿处均设置有不粘型边条，既能使解卷方便，还能够避免粘性膜两侧对棉花等经济作物的粘接；在活接段两侧处均设置有弧形凹口，能够方便打包好后膜包的粘合，粘性好，牢固稳定。本发明制备的打包包装膜，机械强度大，抗蠕变能力强，抗穿刺性能好，粘接性能高,不易松包、炸包，不易老化，性价比高，可替代进口，广泛适用于棉花、牧草、稻草秸秆等经济作物的打包，具有较强的实用性，使用方便。
说明书附图
图1为本发明结构示意图；
图2为本发明实施例1的膜包间的活接段的结构侧视图；
图3为本发明实施例2的膜包间的活接段的结构侧视图；
图4为本发明实施例3的膜包间的活接段的结构侧视图；
图5为本发明实施例4的膜包间的活接段的结构侧视图。
具体实施方式
结合附图1-5，对本发明的具体实施方式作如下说明：
实施例1：
如图1所示，一种打包包装膜，包括引膜1、粘性膜2、普膜3、活接段4和死接段5，其中，死接段5采用单面胶带制成，一定长度的粘性膜2与一定长度的普膜3之间通过死接段5粘合连接在一起形成一个单元 即完成一个完整的膜包，一个膜包正好用来将棉花等物料打包包裹成一个圆筒状的圆筒包，膜包设置有若干个且膜包之间均通过活接段4依次相连，引膜1通过活接段4与第一个膜包的粘性膜2相连接，若干个膜包、活接段4、以及引膜1连接卷和成一卷打包包装膜。
其中，粘性膜2两侧边沿处均设置有不粘型边条21，不粘型边条21可通过直接在粘性膜2两侧边沿处撒上粉末来隔绝粘性而形成。在棉花等物料打包过程中，不粘型边条21的存在，能够避免粘性膜两侧对膜包两侧的棉花等物料的粘接。
其中，粘性膜2上设置有机器识别标志6，棉花、牧草等打包机械在使用本发明的打包包装膜时，机器通过识别机器识别标志6，并通过停止打包包装膜的供应，而正在打包的圆筒状物料包继续旋转并使用打包包装膜，从而将两膜包之间的活接段4因张力拉伸、180度剥离并脱开，进行撕裂，实现膜包的独立性使用。
其中，普膜3两侧边沿处均设置有包边31，棉花、牧草等打包机械在使用时，包边31能够在圆筒状的物料包的两侧端均形成遮挡，防止地里的枯枝碎叶粘接在物料包里的物料上，同时能够对圆筒状的物料包侧端实现包裹，防止送包、散包、炸包等。
其中，活接段4两侧均设置有弧形凹口7，引膜1与粘性膜2之间的活接段4处的弧形凹口7设置在活接段4、以及与活接段4连接的粘性膜2和引膜1两侧边沿上，膜包之间的活接段4处的的弧形凹口7设置在活接段4、以及与活接段4连接的粘性膜2和普膜3两侧边沿上，方便每个膜包的起始、收尾阶段的使用，在膜包使用起始时，便于包装膜的牵引；在膜包使用收尾时，便于粘接，贴合性好，粘性高，牢固稳定。
如图2所示，活接段4，包括第一折叠层41、第二折叠层42、第三折叠层43、粘胶层44，第一折叠层41、第二折叠层42、第三折叠层43自上而下依次设置，粘胶层44设置在第一折叠层41与第二折叠层42之间，第一折叠层41一端与粘性膜2相连，第二折叠层42与第三折叠层43首尾相连。其中位于每个膜包之间的活接段4，其第三折叠层43另一端与普膜3相连；而位于引膜1与首个膜包的粘性膜2之间的活接段4，其第三折叠层43另一端与引膜1相连。
如图2所示，粘胶层44分别与第一折叠层41、第二折叠层42之间的粘性采用差异化设置，其主要通过两种方式来实现。其一，将粘胶层44双面采用不同技术制成，使其两面的粘性呈差异化表现，并且粘胶层44与第一折叠层41之间的粘性远远大于粘胶层44与第二折叠层42之间的粘性；其二，将与粘胶层44相接触的第一折叠层41、第二折叠层42采用不同的材质制成，或者第一折叠层41、第二折叠层42与粘胶层44相接触的的一面采用不同的处理方法，使粘胶层44与第一折叠层41、第二折叠层42之间的粘性呈差异化表现；粘胶层44与第二折叠层42之间采用可剥离技术形成粘合。同时，第一折叠层41、第二折叠层42两端采用易断性设置连接在一起，在受到一定外力作用下，第一折叠层41、第二折叠层42的连接处易断开，从而实现两个膜包间的分离。
本发明一种打包包装膜的制备方法，包括以下步骤：
S1、采用多层共挤吹塑法制备成长卷的普膜，采用多层共挤用自粘技术制备成长卷的粘性膜，备用；同时，制备好机器识别标志6，备用。
S2、将制备好的长卷的普膜，放卷定长作为每卷打包包装膜的引膜1，并卷和在卷轴上。
S3、将制备好的长卷的粘性膜，放卷定长作为粘性膜2，并通过活接段4与卷轴上的引膜1形成粘接，并对引膜1与粘性膜2之间的活接段4的两端处进行剪切，使在活接段4、以及与活接段4连接的粘性膜2和引膜1两侧边沿上均制成弧形凹口7；再对粘性膜2的两侧边沿处撒上粉末来隔绝粘性，制成不粘型边条21；最后在粘性膜2上靠近活接段4处安装固定好机器识别标志6。
S4、将制备好的长卷的普膜，放卷定长作为普膜3，并通过死接段5与粘性膜2的末端形成粘接。
S5、将制备好的长卷的粘性膜，放卷定长作为粘性膜2，并通过活接段4与S4步骤最后的普膜3的末端形成粘接，并对本步骤中粘接的普膜3与粘性膜2之间的活接段4的两端处进行剪切，使在活接段4、以及与活接段4连接的粘性膜2和普膜3两侧边沿上均制成弧形凹口7；再对粘性膜2的两侧边沿处撒上粉末来隔绝粘性，制成不粘型边条21；最后在本步骤放卷的粘性膜2上靠近活接段4处安装固定好机器识别标志6。
S6、重复S4-S5步骤，使引膜1后端粘接有若干个膜包，并卷起在转轴上，从而制作成一整卷打包包装膜。
实施例2：
一种打包包装膜，以及其制备过程，同实施例1相同，不同的在于：如图3所示，在活接段4中，第一折叠层41、第二折叠层42两端采用断开设置，在受到一定外力作用下，粘胶层44与第二折叠层42分离，同时粘胶层44停留在第一折叠层41，即可实现两个膜包间的分离。
实施例3：
一种打包包装膜，以及其制备过程，同实施例1相同，不同的在于：
如图4所示，活接段4包括第一折叠层41、第二折叠层42、第三折叠层43、第四折叠层44、第五折叠层45、粘胶层46，第一折叠层41、第四折叠层44、第三折叠层43、第二折叠层42、第五折叠层45自上而下依次设置，粘胶层46设置在第一折叠层41与第四折叠层44、第三折叠层43与第二折叠层42之间，粘性膜2、第一折叠层41、第二折叠层42依次首尾相连，第三折叠层43、第四折叠层44、第五折叠层45依次首尾相连。其中位于每个膜包之间的活接段4，其第五折叠层45另一端与普膜3相连；而位于引膜1与首个膜包的粘性膜2之间的活接段4，其第五折叠层45另一端与引膜1相连。
如图4所示，粘胶层46分别与第一折叠层41、第四折叠层44之间的粘性，粘胶层46分别与第三折叠层43、第二折叠层42之间的粘性，均采用差异化设置，使粘胶层46的两面的粘性呈差异化表现，并且粘胶层46与第一折叠层41之间的粘性，远远大于粘胶层46与第四折叠层44之间的粘性；粘胶层46与第二折叠层42之间的粘性，远远大于粘胶层46与第三折叠层43之间的粘性。粘胶层46与第三折叠层43、第四折叠层44之间均采用可剥离技术形成粘合。同时，第二折叠层42、第三折叠层43两端采用易断性设置连接在一起，在受到一定外力作用下，第二折叠层42、第三折叠层43的连接处易断开，从而实现两个膜包间的分离。
实施例4：
一种打包包装膜，以及其制备过程，同实施例3相同，不同的在于：如图5所示，在活接段4中，第二折叠层42、第三折叠层43两端采用断 开设置，在受到一定外力作用下，粘胶层46与第三折叠层43、第四折叠层44分离，同时粘胶层44停留在第一折叠层41、第二折叠层42上，即可实现两个膜包间的分离。
以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。对这些实施例的多种修改对本领域的专业技术人员来说是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (15)

  1. 一种打包包装膜，其特征在于，包括引膜(1)、粘性膜(2)、普膜(3)、活接段(4)和死接段(5)，所述粘性膜(2)、普膜(3)之间通过死接段(5)连接在一起形成一个膜包，所述膜包设置有若干个且膜包之间均通过活接段(4)依次相连，所述引膜(1)通过活接段(4)与第一个膜包的粘性膜(2)相连接，所述粘性膜(2)两侧边沿处均设置有不粘型边条(21)，所述粘性膜(2)上设置有机器识别标志(6)，所述活接段(4)两侧均设置有弧形凹口(7)。
  2. 根据权利要求1所述的打包包装膜，其特征在于，所述普膜(3)两侧边沿处均设置有包边(31)。
  3. 根据权利要求2所述的打包包装膜，其特征在于，所述引膜(1)与粘性膜(2)之间的活接段(4)处的弧形凹口(7)设置在活接段(4)、以及与活接段(4)连接的粘性膜(2)和引膜(1)两侧边沿上。
  4. 根据权利要求3所述的打包包装膜，其特征在于，所述膜包之间的活接段(4)处的弧形凹口(7)设置在活接段(4)、以及与活接段(4)连接的粘性膜(2)和普膜(3)两侧边沿上。
  5. 根据权利要求1所述的打包包装膜，其特征在于，所述死接段(5)采用单面胶带制作。
  6. 根据权利要求1所述的打包包装膜，其特征在于，所述活接段(4)包括第一折叠层(41)、第二折叠层(42)、第三折叠层(43)、粘胶层(44)，所述第一折叠层(41)、第二折叠层(42)、第三折叠层(43)自上而下依次设置，所述粘胶层(44)设置在第一折叠层(41)与第二折叠层(42)之间，所述第一折叠层(41)一端与粘性膜(2)相连，所述第二折叠层(42)与第三折叠层(43)首尾相连，所述第三折叠层(43)另一端与普膜(3)或引膜(1)相连。
  7. 根据权利要求6所述的打包包装膜，其特征在于，所述粘胶层(44)分别与第一折叠层(41)、第二折叠层(42)之间的粘性采用差异化设置，所述第一折叠层(41)、第二折叠层(42)两端采用断开设置、或采用易断性设置连接在一起。
  8. 根据权利要求7所述的打包包装膜，其特征在于，所述差异化设置为将粘胶层(44)双面采用不同技术制成，使其两面的粘性呈差异化表现， 且所述粘胶层(44)与第一折叠层(41)之间的粘性大于粘胶层(44)与第二折叠层(42)之间的粘性。
  9. 根据权利要求7所述的打包包装膜，其特征在于，所述差异化设置为：将与粘胶层(44)相接触的第一折叠层(41)、第二折叠层(42)采用不同的材质制成，或者第一折叠层(41)、第二折叠层(42)与粘胶层(44)相接触的的一面采用不同的处理方法，使粘胶层(44)与第一折叠层(41)、第二折叠层(42)之间的粘性呈差异化表现。
  10. 据权利要求7所述的打包包装膜，其特征在于，所述粘胶层(44)与第二折叠层(42)之间采用可剥离技术形成粘合。
  11. 根据权利要求1所述的打包包装膜，其特征在于，所述活接段(4)包括第一折叠层(41)、第二折叠层(42)、第三折叠层(43)、第四折叠层(44)、第五折叠层(45)、粘胶层(46)，所述第一折叠层(41)、第四折叠层(44)、第三折叠层(43)、第二折叠层(42)、第五折叠层(45)自上而下依次设置，所述粘胶层(46)设置在第一折叠层(41)与第四折叠层(44)、第三折叠层(43)与第二折叠层(42)之间，所述粘性膜(2)、第一折叠层(41)、第二折叠层(42)依次首尾相连，所述第三折叠层(43)、第四折叠层(44)、第五折叠层(45)、与普膜(3)或引膜(1)依次首尾相连。
  12. 根据权利要求11所述的打包包装膜，其特征在于，所述粘胶层(46)分别与第一折叠层(41)、第四折叠层(44)之间的粘性，粘胶层(46)分别与第三折叠层(43)、第二折叠层(42)之间的粘性，均采用差异化设置；所述第二折叠层(42)、第三折叠层(43)两端采用断开设置、或采用易断性设置连接在一起。
  13. 根据权利要求12所述的打包包装膜，其特征在于，所述差异化设置为使粘胶层(46)的两面的粘性呈差异化表现，并且所述粘胶层(46)与第一折叠层(41)之间的粘性，大于粘胶层(46)与第四折叠层(44)之间的粘性；所述粘胶层(46)与第二折叠层(42)之间的粘性，大于粘胶层(46)与第三折叠层(43)之间的粘性。
  14. 根据权利要求12所述的打包包装膜，其特征在于，所述粘胶层(46)与第三折叠层(43)、第四折叠层(44)之间均采用可剥离技术形成粘合。
  15. 根据权利要求1所述的打包包装膜的制备方法，其特征在于，包 括以下步骤：
    S1、采用多层共挤吹塑法制备成长卷的普膜，备用；采用多层共挤用自粘技术制备成长卷的粘性膜，备用；同时，制备好机器识别标志(6)，备用；
    S2、将制备好的长卷的普膜，放卷定长作为每卷打包包装膜的引膜(1)，并卷和在卷轴上；
    S3、将制备好的长卷的粘性膜，放卷定长作为粘性膜(2)，并通过活接段(4)与卷轴上的引膜(1)形成粘接，并对引膜(1)与粘性膜(2)之间的活接段(4)的两端处进行剪切，使在活接段(4)、以及与活接段(4)连接的粘性膜(2)和引膜(1)两侧边沿上均制成弧形凹口(7)；再对粘性膜(2)的两侧边沿处撒上粉末来隔绝粘性，制成不粘型边条(21)；最后在粘性膜(2)上靠近活接段(4)处安装固定好机器识别标志(6)；
    S4、将制备好的长卷的普膜，放卷定长作为普膜(3)，并通过死接段(5)与粘性膜(2)的末端形成粘接；
    S5、将制备好的长卷的粘性膜，放卷定长作为粘性膜(2)，并通过活接段(4)与S4步骤最后的普膜(3)的末端形成粘接，并对本步骤中粘接的普膜(3)与粘性膜(2)之间的活接段(4)的两端处进行剪切，使在活接段(4)、以及与活接段(4)连接的粘性膜(2)和普膜(3)两侧边沿上均制成弧形凹口(7)；再对粘性膜(2)的两侧边沿处撒上粉末来隔绝粘性，制成不粘型边条(21)；最后在本步骤放卷的粘性膜(2)上靠近活接段(4)处安装固定好机器识别标志(6)；
    S6、重复S4-S5步骤，使引膜(1)后端粘接有若干个膜包，并卷起在转轴上，从而制作成一整卷打包包装膜。
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