CN105947343A - 一种纸杯及其加工工艺 - Google Patents

一种纸杯及其加工工艺 Download PDF

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Publication number
CN105947343A
CN105947343A CN201610453231.7A CN201610453231A CN105947343A CN 105947343 A CN105947343 A CN 105947343A CN 201610453231 A CN201610453231 A CN 201610453231A CN 105947343 A CN105947343 A CN 105947343A
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layer paper
cup
paper
outer layer
internal layer
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CN201610453231.7A
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丁椒平
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Individual
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Priority to CN201610453231.7A priority Critical patent/CN105947343A/zh
Publication of CN105947343A publication Critical patent/CN105947343A/zh
Priority to US15/628,574 priority patent/US10493735B2/en
Priority to PCT/CN2017/089125 priority patent/WO2017219956A1/zh
Priority to US16/662,032 priority patent/US10850481B2/en
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Abstract

本发明提供了一种纸杯及其加工工艺，属于纸容器技术领域。它解决了现有纸杯强度不足，防烫效果差的问题。本纸杯，包括杯体，杯体包括内层纸和外层纸，外层纸上具有空心凸起，外层纸形成连接部，连接部内侧面与内层纸外侧面相贴合固连，外层纸的杯口边沿延伸至内层纸的杯口边沿，且内层纸的杯口外侧面与外层纸的杯口内侧面相贴合固连，外层纸与内层纸的杯口边沿均向外弯折形成双层结构的卷口；本纸杯的加工工艺包括备纸、辊压、复合、切片、成型、定型等步骤。本纸杯具有较高的强度和较好的防烫效果，本纸杯的加工工艺能够加工出强度较高、防烫效果较好的纸杯。

Description

一种纸杯及其加工工艺
技术领域
本发明属于纸容器技术领域，涉及一种纸杯，尤其涉及一种纸杯及其加工工艺。
背景技术
纸杯是把用化学木浆制成的原纸进行机械加工、粘合所做得的一种纸容器，现有防烫纸杯的技术是在单层纸内杯外套上由单层纸压出有凹凸状的防烫层，也有一种瓦楞防烫层是由面层纸经过加热缩比后定型复合在衬纸上横切成片包贴在纸杯外面起到防烫作用。
如中国发明专利申请(申请号：200610154962.8)公开了一种瓦楞纸杯及其制作工艺，其中纸杯包括杯身、杯底和杯套,要点是在杯身外套有杯套,此杯套是瓦楞纸杯套,其楞条呈横行排列,或在横行排列的楞条上设有凹槽。制作流程分纸杯制作、瓦楞纸杯套扇形片二个分工序和套杯一个总工序进行；瓦楞纸杯套扇形片经套杯机模具卷合成型、接口由超声波产生的瞬间热量烫合成为瓦楞纸杯套,内壁涂胶后与纸杯套合。该纸杯的卷口为单层结构，强度较弱，同时通过杯套套设杯体的加工方式会导致两者的粘结强度不足，在使用过程中受力时容易导致瓦楞的支撑效果失效，但是纸杯捏在手里的支撑强度主要来源于上面的卷口，因此该种纸杯需要通过加厚纸片厚度来弥补强度不足的缺陷，为此加工杯身和杯套的纸张重量需要达到300克/平方米，加工成本较高，同时该制作工艺的缺点还有增加模切、成型生产工序，增加防烫层的纸张成本和纸张厚度，导致纸杯叠加后的高度增加，增加了体积，增加包装，存储、运输成本。
发明内容
本发明的目的是针对现有的技术存在上述问题，提出了一种纸杯，该纸杯具有较高的强度和较好的防烫效果。
本发明的目的是针对现有的技术存在上述问题，提出了一种纸杯的加工工艺本，该纸杯的加工工艺能够加工出强度较高、防烫效果较好的纸杯。
本发明的目的可通过下列技术方案来实现：一种纸杯，包括杯体，所述杯体包括内层纸和外层纸，其特征在于，所述内层纸与外层纸均为单层纸，所述外层纸上具有若干向外凸出用于防烫的空心凸起，所述外层纸位于相邻两空心凸起之间部分形成连接部，所述连接部的内侧面与内层纸的外侧面相贴合固连，所述外层纸的杯口边沿延伸至内层纸的杯口边沿，且内层纸的杯口外侧面与外层纸的杯口内侧面相贴合固连，所述外层纸与内层纸的杯口边沿均向外弯折形成双层结构的卷口，且卷口的横截面呈环形，所述杯体的底部固连有杯底。
外层纸通过弯折形成有序排列的空心凸起，而连接部内侧面与内层纸外侧面相贴合后形成一体的双层结构，起到加强支撑强度作用，相邻的两空心凸起之间空气隔离，不会相互流动，手持杯体时按压在空心凸起外表面时，此时空心凸起的内腔起到隔绝热量传递的作用，使得热量不会传递至空心凸起外表面，从而具有较好的防烫效果，进一步的，由于手持杯体时按压在空心凸起上，空心凸起则起到加强挺度的作用，对杯体具有较好的支撑效果，同时空心凸起与连接部为间隔设置，使得连接部的加强效果与空心凸起的加强效果沿杯体高度方向均布，相结合后进一步的提高杯体的强度，在进一步，由于杯体的下端由杯底进行支撑，而上端杯口处呈环形，因此本杯体的端口边沿向外侧弯折形成双层纸结构的卷口，该卷口也起到加强筋的作用，从而提高杯体杯口边沿的强度，避免杯口边沿内陷导致杯体变形，其中卷口的内层纸与外层纸是相贴合固连的，因此使得内层纸与外层纸形成一个整体，具有较高的支撑强度。
在上述的纸杯中，所述连接部呈环形或者连续的条形，且连接部的宽度为1mm～12mm。连接部呈环形，使得空心凸可以呈环形，手持杯体时杯体为径向受力，因此空心凸起环绕内层纸设置，每一空心凸起均能够承受一定的径向受力，在结合沿杯体高度方向排列设置，使得多根空心凸起对杯体具有较高的支撑强度，而连接部与内层纸具有一定的连接面积，该连接面积对外层纸与内层纸之间的连接强度以及杯体的支撑强度起到加强，当连接部呈连续的条形时，使得空心凸起可以是连续的长条状，同一具有较好的支撑强度。
在上述的纸杯中，所述外层纸与内层纸的重量均为100～170克/每平方米。由于本杯体上均布空心凸起，且卷口采用相固连的双层纸结构，使得杯体具有较高的支撑强度，因此内层纸与外层纸的厚度可以减小，即能够将外层纸与内层纸的重量减小到100～170克/每平方米，起到节约纸张、环保并降低生产成本的作用。
在上述的纸杯中，所述杯底的外边沿向下弯折形成支撑翻边，所述杯体的下端边沿向内弯折，且内层纸的内侧面与支撑翻边的内侧面相贴合固连。支撑翻边的主要目的是对杯体进行支撑，但是也能够提高杯底的强度，而将本体的下端向内弯折后能够将支撑翻边包裹，即对杯体进行支撑的结构为内外两层外层纸、内外两层内层纸以及支撑翻边的五层纸结构，具有较强的支撑能力,进一步的，外层纸的上端边沿弯折并隐藏在卷口内侧，下端边沿弯折并隐藏在支撑翻边内侧，因此在使用过程中外层纸的上下端口边沿均不会因为外力而脱离内层纸，消除了外层纸脱离内层纸的切入点，使得外层纸与内层纸的连接稳定性更高。
一种纸杯的加工工艺，其特征在于，包括如下步骤：
A：备纸：取外层纸并卷绕成筒，取内层纸并卷绕成筒，其中外层纸和内层纸的重量均为100～170克/每平方米；
B：辊压：将外层纸拉出并在外层纸上辊压出若干凸纹；
C：复合：将辊压后的外层纸一侧面与内层纸侧面相贴合固连形成双层纸，使得外层纸的另一侧凸纹形成空心凸起；
D：切片：将双层纸展开并模切出具有两相对直边沿和两相对弧形边沿的扇形杯片；
E：成型：将杯片卷成筒状且直径由上至下逐渐变小的杯体，然后将杯片的两直边沿相贴合固连，再将双层纸结构的杯口边沿向外弯折形成横截面呈环形的卷口；
F：定型：将杯体的下端边沿向内弯折并通过热压粘附在杯底的支撑翻边内侧面上。
本工艺中将内层纸与外层纸的重量限制在100克/每平方米到170克/每平方米之间，以减少纸张用量，降低生产成本，而对于纸张用量减少产生的强度不足问题，则通过在外层纸上辊压出若干凸纹，然后在卷绕成筒状杯体之前先将外层纸与内层纸固连在一起，从而形成具有较高支撑强度的空心凸起，以提高杯体的支撑强度，相比较传统工艺中先将外层纸卷绕成筒状外杯体、内层纸卷绕成筒状内杯体，然后将外杯体套在内杯体上粘接固连，本工艺先将辊压出凸纹的外层纸与内层纸固连，从而使外层纸与内层纸卷绕成筒状杯体之前具有较好的整体性，且铺开的外层纸与铺开的内层纸相固连能够使两者的连接质量更高，避免出现局部由于粘合力度不够等原因导致的空隙，而再将具有更高连接质量和连接稳定性的双层纸卷绕成筒状的杯体，使得该杯体具有较高的支撑强度，进一步的，本工艺是将固连在一起的双层纸结构进行弯折卷口，该卷口也起到加强筋的作用，从而提高杯体杯口边沿的强度，避免杯口边沿内陷导致杯体变形，其中卷口的内层纸与外层纸是相贴合固连的，因此能够避免其中一层纸变形后导致另一层纸变形，使得内层纸与外层纸形成一个整体，具有较高的支撑强度，再进一步，由于内层纸与外层纸之间具有较高的连接质量，因此能够避免空心凸起受力后出现内陷而与内层纸接触，因此在手持杯体时空心凸起始终能够提供稳定的隔热空间，具有较好的防烫效果。
在上述的纸杯的加工工艺中，在B步骤中，外层纸从相啮合的凸辊与凹辊之间穿过，在凸辊与凹辊对外层纸进行辊压时外层纸的温度小于90℃，外层纸的含水量为5.5％～7％，辊压后外层纸上的凸纹高度为0.3mm～1mm，辊压成型的外层纸贴靠在凹辊上并随凹辊转动至凹辊的另一侧进行步骤C。在该工艺步骤中，外层纸在受到凸辊与凹辊的压力形变时，外层纸的温度与湿度均决定了外层纸形变的程度和稳定性，而在上述温度和湿度范围内外层纸辊压出的凸纹质量更高，其中凸纹高度影响步骤C中外层纸与内层纸固连后空心凸起的高度，进而影响杯体的支撑强度和防烫效果。
在上述的纸杯的加工工艺中，在步骤C中，外层纸贴靠在凹辊外侧面上，内层纸贴靠在圆辊外侧面上，外层纸与内层纸相靠拢并抵靠，其中在外层纸与内层纸相抵靠之前喷淋头位于凹辊与圆辊之间间隙的上方并同时对外层纸及内层纸的相对侧面进行淋膜、或者涂胶头位于凹辊与圆辊之间间隙的上方并同时对外层纸及内层纸的相对侧面进行涂胶。外层纸和内层纸分别在凹辊和圆辊的带动下相靠拢，在靠拢抵靠之前需要添加粘合剂，而用于连接外层纸与内层纸的方式多样，其中典型的选择淋膜复合或者涂胶粘合，当选择淋膜复合时需要通过淋膜机，将淋膜机的淋膜头放置在凹辊与圆辊之间间隙的上方，因此外层纸与内层纸的侧面在贴合抵靠之前均具有淋膜层，然后受力复合，使得外层纸与内层纸具有较高的连接强度和稳定性，同样，选择涂胶粘合时需要通过涂胶机，将涂胶机的涂胶头放置在凹辊与圆辊之间间隙的上方，因此外层纸与内层纸的侧面在贴合抵靠之前均具有胶水层，然后受力复合，使得外层纸与内层纸具有较高的连接强度和稳定性，进而对本体的支撑强度和防烫效果提供保证。
在上述的纸杯的加工工艺中，步骤C中，当外层纸与内层纸通过涂胶粘合时的胶水量为5克/每平方米～15克/每平方米，或者当外层纸与内层纸通过淋膜复合时淋膜的厚度为0.007mm～0.018mm。通过涂胶粘合时胶水量决定外层纸与内层纸的连接强度，胶水过多则导致胶水溢出，浪费胶水量，胶水过少则导致连接强度不足，同理，通过淋膜复合时淋膜厚度决定外层纸与内层纸的连接强度，淋膜厚度过大则导致淋膜浪费，淋膜厚度过小则导致连接强度不足。
在上述的纸杯的加工工艺中，在步骤C中，所述圆辊为硬度45～95的橡胶辊，所述圆辊与凹辊对外层纸及内层纸的压力为40N～80N，使得外层纸一侧面局部平铺并粘接在内层纸侧面上，从而形成位于相邻空心凸起之间的连接部，该连接部的宽度为4mm～12mm。圆辊与凹辊对外层纸及内层纸的压力将影响外层纸与内层纸之间的连接强度，即压力过大则导致外层纸与内层纸之间的粘合剂被挤出而导致连接强度不足，该压力过小则容易使外层纸与内层纸之间出现空隙，导致连接强度不足，相对应的，粘结面直观的反映出外层纸与内层纸的连接强度，空心凸起的高度直观的反映出隔热空腔的大小，同时粘接面的宽度越大则空心凸起的内腔空间越小，即隔热效果被降低，因此综合考虑上述因素，将粘接面宽度设置为4mm～12mm时外层纸与内层纸之间具有较高连接强度和较好的隔热效果。
在上述的纸杯的加工工艺中，在B步骤中辊压成的凸纹在外层纸上均匀分布，在步骤C和步骤D之间将外层纸(12)通过热压板压平，从而形成若干组凸纹，每组凸纹均呈扇形排列。先通过热压板将外层纸局部压平，从而若干组凸纹，然后在步骤D中将该若干组凸纹模切下来，一组凸纹对应一个杯片，而通过热压板压平的部分则形成杯片平整的边沿，用于卷口和包裹支撑翻边，杯片的直边沿压平用于卷绕成筒状后相粘接固连。
在上述的纸杯的加工工艺中，在B步骤中，凹辊与凸辊在外层纸上辊压出若干组间隔有序排列的凸纹，使外层纸位于相邻两组凸纹之间的部分平整，在步骤D中模切下来包含一组凸纹的扇形杯片，且使杯片的边沿位置平整。该结构的双层纸在每组凸纹之间已经预留平整的部分，所以模切出的扇形杯片具有平整的边沿，因此在卷绕成杯体之前无需压平。
与现有技术相比，本纸杯及其加工工艺具有以下优点：
1、由于手持杯体时按压在空心凸起外表面时，此时空心凸起的内腔起到隔绝热量传递的作用，使得热量不会传递至空心凸起外表面，从而具有较好的防烫效果。
2、由于杯体的端口边沿向外侧弯折形成双层纸结构的卷口，其中卷口的内层纸与外层纸是相贴合固连的，因此能够避免其中一层纸变形后导致另一层纸变形，使得内层纸与外层纸形成一个整体，具有较高的支撑强度。
3、由于本工艺先将辊压出凸纹的外层纸与内层纸固连，从而使外层纸与内层纸卷绕成筒状杯体之前具有较好的整体性，再将具有更高连接质量和连接稳定性的双层纸卷绕成筒状的杯体，使得该杯体具有较高的支撑强度，因此能够将内层纸与外层纸的重量限制在100克/每平方米到170克/每平方米之间，以减少纸张用量，降低生产成本。
附图说明
图1是纸杯的结构剖视图。
图2是纸杯的加工工艺流程图。
图3是步骤B、C的简易流程图。
图4是杯片的结构示意图。
图5是实施例二中双层纸未模切时的结构示意图。
图6是实施例五中纸杯的加工工艺流程图。
图中，1、杯体；11、内层纸；12、外层纸；121、空心凸起；122、连接部；2、杯片；3、卷口；4、杯底；41、支撑翻边；5、凸辊；6、凹辊；7、圆辊；8、喷淋头；9、双层纸。
具体实施方式
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。
如图1所示，一种纸杯，包括杯体1，杯体1包括内层纸11和外层纸12，内层纸11与外层纸12均为单层纸，外层纸12上具有若干向外凸出用于防烫的空心凸起121，外层纸12位于相邻两空心凸起121之间部分形成连接部122，连接部122的内侧面与内层纸11的外侧面相贴合固连，外层纸12的杯口边沿延伸至内层纸11的杯口边沿，且内层纸11的杯口外侧面与外层纸12的杯口内侧面相贴合固连，外层纸12与内层纸11的杯口边沿均向外弯折形成双层结构的卷口3，且卷口3的横截面呈环形，外层纸12通过弯折形成有序排列的空心凸起121，而连接部122内侧面与内层纸11外侧面相贴合后相邻的两空心凸起121之间空气隔离，不会相互流动，手持杯体1时按压在空心凸起121外表面时，此时空心凸起121的内腔起到隔绝热量传递的作用，使得热量不会传递至空心凸起121外表面，从而具有较好的防烫效果，进一步的，由于手持杯体1时按压在空心凸起121上，空心凸起121则起到加强挺度的作用，对杯体1具有较好的支撑效果，从而提高杯体1的强度，在进一步，由于杯体1的下端由杯底4进行支撑，而上端杯口处呈环形，因此本杯体1的端口边沿向外侧弯折形成双层纸结构的卷口3，该卷口3也起到加强筋的作用，从而提高杯体1杯口边沿的强度，避免杯口边沿内陷导致杯体1变形，其中卷口3的内层纸11与外层纸12是相贴合固连的，使得内层纸11与外层纸12形成一个整体，具有较高的支撑强度。
具体来说，由于手持杯体1时杯体1为径向受力，因此连接部122呈环形，并环绕内层纸11设置，且若干连接部122沿杯体1的高度方向排列，即空心凸起121呈环形，每一空心凸起121均能够承受一定的径向受力，在结合沿杯体1高度方向排列设置，使得多根空心凸起121对杯体1具有较高的支撑强度，连接部122的宽度为8mm，连接部122与内层纸11具有一定的连接面积，该连接面积对外层纸12与内层纸11之间的连接强度以及杯体1的支撑强度起到加强。当然在实际加工过程中，连接部122也可以呈连续的条形，使得空心凸起121也呈条形，或者使得空心凸起121呈圆形或者多边形均具有较好的支撑效果，由于本杯体1上均布空心凸起121，且卷口3采用相固连的双层纸结构，使得杯体1具有较高的支撑强度，因此内层纸11与外层纸12的厚度可以减小，即能够将外层纸12与内层纸11的重量减小到130克/每平方米，起到节约纸张、环保并降低生产成本的作用。杯底4的外边沿向下弯折形成支撑翻边41，杯体1的下端边沿向内弯折，且内层纸11的内侧面与支撑翻边41的内侧面相贴合固连，支撑翻边41的主要目的是对杯体1进行支撑，但是也能够提高杯底4的强度，而将本体的下端向内弯折后能够将支撑翻边41包裹，即对杯体1进行支撑的结构为内外两层外层纸12、内外两层内层纸11以及支撑翻边41的五层纸结构，具有较强的支撑能力。
如图2、图4、图5所示，本纸杯的加工工艺包括如下步骤：
A：备纸：取外层纸12并卷绕成筒，取内层纸11并卷绕成筒，其中外层纸12和内层纸11的重量均为130克/每平方米；
B：辊压：将外层纸12拉出并在外层纸12上辊压出若干凸纹；
C：复合：将辊压后的外层纸12一侧面与内层纸11侧面相贴合固连形成双层纸9，使得外层纸12的另一侧凸纹形成空心凸起121；
D：切片：将双层纸9展开并模切出具有两相对直边沿和两相对弧形边沿的扇形杯片2；
E：成型：将杯片2卷成筒状且直径由上至下逐渐变小的杯体1，然后将杯片2的两直边沿相贴合固连，再将双层纸结构的杯口边沿向外弯折形成横截面呈环形的卷口3；
F：定型：将杯体1的下端边沿向内弯折并通过热压粘附在杯底4的支撑翻边41内侧面上。
本工艺中将内层纸11与外层纸12的重量限制在130克/每平方米，以减少纸张用量，降低生产成本，而对于纸张用量减少产生的强度不足问题，则通过在外层纸12辊压出凸纹，然后在卷绕成筒状杯体1之前先将外层纸12与内层纸11固连在一起，从而形成具有较高支撑强度的空心凸起121，以提高杯体1的支撑强度，相比较传统工艺中先将外层纸12卷绕成筒状外杯体、内层纸11卷绕成筒状内杯体，然后将外杯体套在内杯体上粘接固连，本工艺先将辊压出凸纹的外层纸12与内层纸11固连，从而使外层纸12与内层纸11卷绕成筒状杯体1之前具有较好的整体性，且铺开的外层纸12与铺开的内层纸11相固连能够使两者的连接质量更高，避免出现局部由于粘合力度不够等原因导致的空隙，而再将具有更高连接质量和连接稳定性的双层纸9卷绕成筒状的杯体1，使得该杯体1具有较高的支撑强度，其中杯片2卷绕后将两边沿相粘合，该粘合的接缝线沿杯体1轴向，当然也可以相对倾斜。进一步的，本工艺是将固连在一起的双层纸9结构进行弯折卷口3，该卷口3也起到加强筋的作用，从而提高杯体1杯口边沿的强度，避免杯口边沿内陷导致杯体1变形，其中卷口3的内层纸11与外层纸12是相贴合固连的，因此能够避免其中一层纸变形后导致另一层纸变形，使得内层纸11与外层纸12形成一个整体，具有较高的支撑强度，再进一补，由于内层纸11与外层纸12之间具有较高的连接质量，因此能够避免空心凸起121受力后出现内陷而与内层纸11接触，因此在手持杯体1时空心凸起121始终能够提供稳定的隔热空间，具有较好的防烫效果。
具体来说，结合图3所示，在步骤B中外层纸12从相啮合的凸辊5与凹辊6之间穿过，外层纸12在受到凸辊5与凹辊6的压力形变时，外层纸12的温度与湿度均决定了外层纸12形变的程度和稳定性，因此本实施例中凸辊5与凹辊6对外层纸12进行辊压时外层纸12的温度为85℃，外层纸12的含水量为6.25％，使得外层纸12辊压成的凸纹质量更高，辊压后外层纸12上的凸纹高度为0.7mm，其中凸纹高度影响步骤C中外层纸12与内层纸11固连后空心凸起121的高度，进而影响杯体1的支撑强度和防烫效果，辊压成型的外层纸12贴靠在凹辊6上并随凹辊6转动至凹辊6的另一侧进行步骤C。在步骤C中，外层纸12贴靠在凹辊6外侧面上，内层纸11贴靠在圆辊7外侧面上，外层纸12与内层纸11相靠拢并抵靠，其中在外层纸12与内层纸11相抵靠之前需要淋膜机进行淋膜，淋膜复合时需要通过淋膜机，将淋膜机的喷淋头8放置在凹辊6与圆辊7之间间隙的上方，因此外层纸12与内层纸11的侧面在贴合抵靠之前均具有淋膜层，然后受力复合，使得外层纸12与内层纸11具有较高的连接强度和稳定性。在步骤C中，圆辊7与凹辊6使得外层纸12一侧面局部平铺并粘接在内层纸11侧面上，从而形成位于相邻两空心凸起121之间的连接部122，圆辊7与凹辊6对外层纸12及内层纸11的压力将影响外层纸12与内层纸11之间的连接强度，即压力过大则导致外层纸12与内层纸11之间的粘合剂被挤出而导致连接强度不足，该压力过小则容易使外层纸12与内层纸11之间出现空隙，导致连接强度不足，相对应的，粘结面直观的反映出外层纸12与内层纸11的连接强度，空心凸起121的高度直观的反映出隔热空腔的大小，同时粘接面的宽度越大则空心凸起121的内腔空间越小，即隔热效果被降低，因此综合考虑上述因素，本实施例中将连接部的宽度设置为8mm时外层纸12与内层纸11之间具有较高连接强度和较好的隔热效果。通过淋膜复合时淋膜厚度决定外层纸12与内层纸11的连接强度，淋膜厚度过大则导致淋膜浪费，淋膜厚度过小则导致连接强度不足，因此本实施例中外层纸12与内层纸11通过淋膜复合时淋膜的厚度为0.012mm。在B步骤中辊压成的凸纹在外层纸12上均匀分布，在步骤C和步骤D之间将外层纸12通过热压板压平，从而形成若干组凸纹，每组凸纹均呈扇形排列，先通过热压板将外层纸12局部压平，从而若干组凸纹，然后在步骤D中将该若干组凸纹模切下来，一组凸纹对应一个杯片2，而通过热压板压平的部分则形成杯片2平整的边沿。
实施例二：
该纸杯的加工工艺与实施例一基本相同，不同点在于如图5所示：在B步骤中，凹辊6与凸辊5在外层纸12上辊压出若干组间隔有序排列的凸纹，使外层纸12位于相邻两组凸纹之间的部分平整，在步骤D中模切下来包含一组凸纹的扇形杯片2，且使杯片2的边沿位置平整。
实施例三：
该纸杯的加工工艺与实施例一基本相同，不同点在于如下：
步骤A中，外层纸12和内层纸11的重量均为100克/每平方米；
步骤B中，凸辊5与凹辊6对外层纸12进行辊压时外层纸12的温度为80℃，外层纸12的的含水量为5.5％，辊压后外层纸12上的凸纹高度为0.3mm；
步骤C中，圆辊7与凹辊6对外层纸12及内层纸11的压力为40N，连接部的宽度为1mm，外层纸12与内层纸11通过淋膜复合时淋膜的厚度为0.007mm。
实施例四：
该纸杯的加工工艺与实施例一基本相同，不同点在于如下：
步骤A中，外层纸12和内层纸11的重量均为170克/每平方米；
步骤B中，凸辊5与凹辊6对外层纸12进行辊压时外层纸12的温度为75℃，外层纸12的湿度为含水量为7％，辊压后外层纸12上的凸纹高度为1mm；
步骤C中，圆辊7与凹辊6对外层纸12及内层纸11的压力为80N，连接部的宽度为12mm，外层纸12与内层纸11通过淋膜复合时淋膜的厚度为0.018mm。
以上实施例选取了三组工艺参数组合，当然其他的组合方式也是适用的。
实施例五：
该纸杯的加工工艺与实施例一基本相同，不同点在于如图6所示，在步骤C中，外层纸12贴靠在凹辊6外侧面上，内层纸11贴靠在圆辊7外侧面上，外层纸12与内层纸11相靠拢并抵靠，其中在外层纸12与内层纸11相抵靠之前需要涂胶机进行涂胶，具体的，涂胶头位于凹辊6与圆辊7之间间隙的上方并同时对外层纸12及内层纸11的相对侧面进行涂胶，外层纸12与内层纸11的侧面在贴合抵靠之前均具有胶水层，然后受力粘合，使得外层纸12与内层纸11具有较高的连接强度和稳定性，进而对本体的支撑强度和防烫效果提供保证，通过涂胶粘合时胶水量决定外层纸12与内层纸11的连接强度，胶水过多则导致胶水溢出，浪费胶水量，胶水过少则导致连接强度不足，因此本实施例中外层纸12与内层纸11通过涂胶粘合时的胶水量为10克/每平方米，当然在实际生产过程中外层纸12与内层纸11通过涂胶粘合时的胶水量也可以为5克/每平方米或者15克/每平方米。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。
尽管本文较多地使用了内层纸11、外层纸12、空心凸起121等术语，但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本发明的本质；把它们解释成任何一种附加的限制都是与本发明精神相违背的。

Claims (10)

1.一种纸杯，包括杯体(1)，所述杯体(1)包括内层纸(11)和外层纸(12)，其特征在于，所述内层纸(11)与外层纸(12)均为单层纸，所述外层纸(12)上具有若干向外凸出用于防烫的空心凸起(121)，所述外层纸(12)位于相邻两空心凸起(121)之间部分形成连接部(122)，所述连接部(122)的内侧面与内层纸(11)的外侧面相贴合固连，所述外层纸(12)的杯口边沿延伸至内层纸(11)的杯口边沿，且内层纸(11)的杯口外侧面与外层纸(12)的杯口内侧面相贴合固连，所述外层纸(12)与内层纸(11)的杯口边沿均向外弯折形成双层结构的卷口(3)，且卷口(3)的横截面呈环形，所述杯体(1)的底部固连有杯底(4)。
2.根据权利要求1所述的纸杯，其特征在于，所述连接部(122)呈环形或者连续的条形，且连接部(122)的宽度为4mm～12mm。
3.根据权利要求2所述的纸杯，其特征在于，所述外层纸(12)与内层纸(11)的重量均为100克/每平方米～170克/每平方米。
4.根据权利要求1所述的纸杯，其特征在于，所述杯底(4)的外边沿向下弯折形成支撑翻边(41)，所述杯体(1)的下端边沿向内弯折，且内层纸(11)的内侧面与支撑翻边(41)的内侧面相贴合固连。
5.一种纸杯的加工工艺，其特征在于，包括如下步骤：
A：备纸：取外层纸(12)并卷绕成筒，取内层纸(11)并卷绕成筒，其中外层纸(12)和内层纸(11)的重量均为100克/每平方米～170克/每平方米；
B：辊压：将外层纸(12)拉出并在外层纸(12)上辊压出若干凸纹；
C：复合：将辊压后的外层纸(12)一侧面与内层纸(11)侧面相贴合固连形成双层纸(9)，使得外层纸(12)的另一侧凸纹形成空心凸起(121)；
D：切片：将双层纸(9)展开并模切出具有两相对直边沿和两相对弧形边沿的扇形杯片(2)；
E：成型：将杯片(2)卷成筒状且直径由上至下逐渐变小的杯体(1)，然后将杯片(2)的两直边沿相贴合固连，再将双层纸(9)结构的杯口边沿向外弯折形成横截面呈环形的卷口(3)；
F：定型：将杯体(1)的下端边沿向内弯折并通过热压粘附在杯底(4)的支撑翻边(41)内侧面上。
6.根据权利要求5所述的纸杯的加工工艺，其特征在于，在B步骤中，外层纸(12)从相啮合的凸辊(5)与凹辊(6)之间穿过，在凸辊(5)与凹辊(6)对外层纸(12)进行辊压时外层纸(12)的温度小于90℃，外层纸(12)的含水量为5.5％～7％，辊压后外层纸(12)上的凸纹高度为0.3mm～1mm，辊压成型的外层纸(12)贴靠在凹辊(6)上并随凹辊(6)转动至凹辊(6)的另一侧进行步骤C。
7.根据权利要求6所述的纸杯的加工工艺，其特征在于，在步骤C中，外层纸(12)贴靠在凹辊(6)外侧面上，内层纸(11)贴靠在圆辊(7)外侧面上，外层纸(12)与内层纸(11)相靠拢并抵靠，其中在外层纸(12)与内层纸(11)相抵靠之前喷淋头(8)位于凹辊(6)与圆辊(7)之间间隙的上方并同时对外层纸(12)及内层纸(11)的相对侧面进行淋膜、或者涂胶头位于凹辊(6)与圆辊(7)之间间隙的上方并同时对外层纸(12)及内层纸(11)的相对侧面进行涂胶，当外层纸(12)与内层纸(11)通过涂胶粘合时的胶水量为5克/每平方米～15克/每平方米，当外层纸(12)与内层纸(11)通过淋膜复合时淋膜的厚度为0.007mm～0.018mm。
8.根据权利要求7所述的纸杯的加工工艺，其特征在于，在步骤C中，所述圆辊(7)为硬度45～95的橡胶辊，所述圆辊(7)与凹辊(6)对外层纸(12)及内层纸(11)的压力为40N～80N，使得外层纸(12)一侧面局部平铺并粘接在内层纸(11)侧面上，从而形成位于相邻空心凸起(121)之间的连接部(122)，该连接部(122)的宽度为1mm～12mm。
9.根据权利要求5所述的纸杯的加工工艺，其特征在于，在B步骤中辊压成的凸纹在外层纸(12)上均匀分布，在步骤C和步骤D之间将外层纸(12)通过热压板压平，从而形成若干组凸纹，每组凸纹均呈扇形排列。
10.根据权利要求5所述的纸杯的加工工艺，其特征在于，在B步骤中，凹辊(6)与凸辊(5)在外层纸(12)上辊压出若干组间隔有序排列的凸纹，使外层纸(12)位于相邻两组凸纹之间的部分平整，在步骤D中模切下来包含一组凸纹的扇形杯片(2)，且使杯片(2)的边沿位置平整。
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Application publication date: 20160921