{"id":4088,"date":"2025-11-03T12:28:55","date_gmt":"2025-11-03T12:28:55","guid":{"rendered":"https:\/\/bestypack.com\/?p=4088"},"modified":"2026-08-03T04:58:38","modified_gmt":"2026-08-03T04:58:38","slug":"%d9%83%d9%8a%d9%81-%d9%8a%d8%aa%d9%85-%d8%a5%d9%86%d8%aa%d8%a7%d8%ac-%d9%81%d9%8a%d9%84%d9%85-pva-%d8%a7%d9%84%d9%82%d8%a7%d8%a8%d9%84-%d9%84%d9%84%d8%b0%d9%88%d8%a8%d8%a7%d9%86-%d9%81%d9%8a-%d8%a7","status":"publish","type":"post","link":"https:\/\/bestypack.com\/ar\/blog\/pva-water-soluble-film-how-is-it-produced\/","title":{"rendered":"\u0641\u064a\u0644\u0645 PVA \u0627\u0644\u0642\u0627\u0628\u0644 \u0644\u0644\u0630\u0648\u0628\u0627\u0646 \u0641\u064a \u0627\u0644\u0645\u0627\u0621: \u0643\u064a\u0641 \u064a\u062a\u0645 \u0625\u0646\u062a\u0627\u062c\u0647\u061f"},"content":{"rendered":"

PVA\u6c34<\/a>\u2013soluble film is usually<\/strong> made by converting a carefully selected \u0628\u0648\u0644\u064a \u0641\u064a\u0646\u064a\u0644 \u0643\u062d\u0648\u0644<\/strong> resin into a uniform film through solution casting. The resin is dissolved and formulated in water, cleaned of particles and bubbles, cast onto a moving surface, dried, conditioned, slit, and wound. Thermoplastic melt extrusion is another route, but it requires a PVOH grade and formulation designed for a narrow processing window. In either case, finished-film approval depends on controlled test conditions\u2014not on the material name alone.<\/p>\n\n\n\n

\"\u900f\u660e\u6c34\u6eb6\u6027PVOH\u8584\u819c\u5377\u7684\u6982\u5ff5\u793a\u610f\u56fe\uff0c\u5e26\u6709\u677e\u6563\u7684\u900f\u660e\u5e45\u6750\"
\u6982\u5ff5\u56fe\u793a\uff1a\u901a\u7528PVOH\u6c34\u6eb6\u6027\u8584\u819c\uff1b\u975eBestY Pack\u4ea7\u54c1\u7167\u7247\u3002.<\/figcaption><\/figure>\n\n\n\n

PVA\u6216PVOH\uff1a\u6c34\u6eb6\u6027\u8584\u819c\u80cc\u540e\u7684\u6811\u8102<\/h2>\n\n\n

\u0644\u0644\u0633\u064a\u0627\u0642 \u0627\u0644\u062a\u0646\u0638\u064a\u0645\u064a\u060c \u064a\u064f\u0631\u062c\u0649 \u0627\u0644\u0631\u062c\u0648\u0639 \u0625\u0644\u0649 \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u063a\u0630\u0627\u0621 \u0648\u0627\u0644\u062f\u0648\u0627\u0621 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629 (FDA). \u98df\u54c1\u5305\u88c5\u6307\u5357<\/a> \u5728\u6279\u51c6\u9884\u671f\u7684\u98df\u54c1\u63a5\u89e6\u7528\u9014\u4e4b\u524d\u3002.<\/p>\n\n\n\n

\u5173\u4e8e\u76d1\u7ba1\u80cc\u666f\uff0c\u8bf7\u53c2\u8003<\/strong> the U.S. FDA\u2019s food-packaging guidance before approving an intended food-contact use.<\/p>\n\n\n\n\n

\u201cPVA\u201d is widely used<\/strong> in packaging to mean polyvinyl alcohol, although \u201cPVOH\u201d is the less ambiguous technical abbreviation because PVA can also mean polyvinyl acetate. The resin is water-soluble and film-forming, but those labels do not define a finished film. Resin chemistry, formulation, converting conditions, moisture history, and the intended packed product all influence the result.<\/p>\n\n\n\n

\u4ece\u918b\u9178\u4e59\u70ef\u916f\u5230PVOH\u6811\u8102<\/h3>\n\n\n\n

Polyvinyl alcohol is not<\/strong> normally made by directly polymerizing vinyl alcohol. Industrial production first polymerizes vinyl acetate monomer to polyvinyl acetate (PVAc). A subsequent hydrolysis or saponification step converts acetate groups into hydroxyl groups, producing PVOH. This upstream chemistry creates the resin used by a film converter; it is separate from the later film-forming operation.<\/p>\n\n\n\n

Kuraray\u7684\u6280\u672f\u89e3\u91ca describes polymerization and hydrolysis<\/strong> as the two core steps in PVOH manufacture. SEKISUI\u2019s solution-preparation guide likewise notes that PVOH grades vary in molecular weight and hydrolysis level. Neither source, by itself, establishes the formulation or performance of a particular commercial film.<\/p>\n\n\n\n

\u5f71\u54cd\u8584\u819c\u52a0\u5de5\u7684\u7b49\u7ea7\u53d8\u91cf<\/h2>\n\n\n\n

Two resin descriptors are<\/strong> especially \u662f\u5426\u6709\u786e\u8ba4\u7684\u5546\u5e97\u6295\u9012\u70b9\u3001\u5546\u4e1a\u6536\u96c6\u3001\u56de\u7a0b\u8fd0\u8f93\u6216\u5176\u4ed6\u6536\u96c6\u9014\u5f84\uff1f<\/strong>. Degree of polymerization relates to chain length and strongly influences aqueous-solution viscosity and film strength. Degree of hydrolysis describes how extensively acetate groups have been converted and affects water response, solution preparation, and film behavior. Chemical modification can further adjust processing or dissolution characteristics.<\/p>\n\n\n\n

The converter then combines<\/strong> the selected resin with a controlled formulation Depending on the intended film that formulation may include plasticizers and limited processing aids Their identities and amounts are product-specific an additive that improves flexibility or handling can also change moisture sensitivity sealing or dissolution For that reason a generic online recipe should never substitute for the resin.<\/p>\n\n\n\n

\u4e3b\u8981\u751f\u4ea7\u5de5\u827a\uff1a\u6eb6\u6db2\u6d41\u5ef6\u6cd5<\/h3>\n\n\n\n

Solution casting forms the<\/strong> film from an aqueous PVOH solution. It is widely reported as the principal route for PVOH film because it avoids forcing an unmodified polymer through a conventional melt-processing window. The production sequence is:<\/p>\n\n\n\n

    \n\n
  1. Formulate and dissolve the<\/strong> resin.<\/li>\n\n\n
  2. Filter, deaerate, and meter<\/strong> the solution.<\/li>\n\n\n
  3. Cast a controlled wet<\/strong> layer onto a moving belt or drum.<\/li>\n\n\n
  4. \u5728\u53d7\u63a7\u5e72\u71e5\u66f2\u7ebf\u4e0b\u53bb\u9664\u6c34\u5206\u3002.<\/li>\n\n\n
  5. \u91ca\u653e\u3001\u8c03\u7406\u3001\u5206\u5207\u3001\u68c0\u67e5\u5e76\u5377\u7ed5\u8584\u819c\u3002.<\/li>\n\n<\/ol>\n\n\n\n

    \u6bcf\u4e2a\u5236\u9020\u5546\u6839\u636e\u5176\u81ea\u8eab\u6811\u8102\u3001\u914d\u65b9\u3001\u8bbe\u5907\u548c\u76ee\u6807\u8584\u819c\u8bbe\u5b9a\u6d53\u5ea6\u3001\u6e29\u5ea6\u3001\u505c\u7559\u65f6\u95f4\u3001\u8fc7\u6ee4\u3001\u5e45\u6750\u901f\u5ea6\u548c\u5e72\u71e5\u66f2\u7ebf\u3002\u987a\u5e8f\u662f\u901a\u7528\u7684\uff1b\u64cd\u4f5c\u914d\u65b9\u5219\u4e0d\u662f\u3002.<\/p>\n\n\n\n

    1. \u914d\u5236\u5e76\u6eb6\u89e3\u6811\u8102<\/h2>\n\n\n\n

    Production begins by charging water and PVOH resin into a mixing system under a defined order of.<\/p>\n\n\n\n

    \u5728\u53d7\u63a7\u6761\u4ef6\u4e0b\u52a0\u5165\u589e\u5851\u5242\u6216\u5176\u4ed6\u6388\u6743\u7684\u914d\u65b9\u7ec4\u5206\u3002\u64cd\u4f5c\u5458\u76d1\u63a7\u56fa\u4f53\u542b\u91cf\u3001\u6e29\u5ea6\u3001\u7c98\u5ea6\u3001\u6df7\u5408\u65f6\u95f4\u548c\u5916\u89c2\u7b49\u53d8\u91cf\u3002\u7a33\u5b9a\u7684\u6eb6\u6db2\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u6d41\u5ef6\u5934\u53ef\u4ee5\u5c06\u4e0a\u6e38\u53d8\u5316\u590d\u5236\u4e3a\u5e72\u819c\u4e2d\u7684\u6761\u7eb9\u3001\u539a\u5ea6\u53d8\u5316\u3001\u8584\u5f31\u70b9\u6216\u5149\u5b66\u7f3a\u9677\u3002.<\/p>\n\n\n\n

    \"PVOH\u6811\u8102\u5728\u4e0d\u9508\u94a2\u5de5\u827a\u5bb9\u5668\u4e2d\u4e0e\u6c34\u6eb6\u6db2\u6df7\u5408\u7684\u6982\u5ff5\u793a\u610f\u56fe\"
    \u6982\u5ff5\u56fe\u793a\uff1a\u901a\u7528PVOH\u6eb6\u6db2\u5236\u5907\uff1b\u5b9e\u9645\u914d\u65b9\u548c\u8bbe\u5907\u6709\u6240\u4e0d\u540c\u3002.<\/figcaption><\/figure>\n\n\n\n

    2. \u8fc7\u6ee4\u3001\u8131\u6c14\u5e76\u8ba1\u91cf\u6eb6\u6db2<\/h3>\n\n\n\n

    \u5236\u5907\u597d\u7684\u6eb6\u6db2\u901a\u8fc7\u4e3a\u5de5\u827a\u9009\u62e9\u7684\u8fc7\u6ee4\u7cfb\u7edf\u3002\u8fd9\u53bb\u9664\u4e86\u53ef\u80fd\u6807\u8bb0\u8584\u819c\u6216\u7834\u574f\u6d41\u5ef6\u95f4\u9699\u7684\u5916\u6765\u9897\u7c92\u548c\u672a\u6eb6\u89e3\u7269\u8d28\u3002\u8fc7\u6ee4\u5fc5\u987b\u4f5c\u4e3a\u8fc7\u7a0b\u63a7\u5236\u8fdb\u884c\u7ba1\u7406\uff1a\u53d8\u5316\u7684\u538b\u5dee\u6216\u610f\u5916\u6b8b\u7559\u7269\u53ef\u80fd\u8868\u660e\u539f\u6750\u6599\u3001\u6eb6\u89e3\u6216\u6c61\u67d3\u95ee\u9898\u3002.<\/p>\n\n\n\n

    \u5939\u5e26\u7684\u7a7a\u6c14\u4e5f\u88ab\u53bb\u9664\uff0c\u901a\u5e38\u901a\u8fc7\u53d7\u63a7\u505c\u7559\u548c\u771f\u7a7a\u8131\u6c14\u3002\u5230\u8fbe\u6d41\u5ef6\u8868\u9762\u7684\u6c14\u6ce1\u53ef\u80fd\u6210\u4e3a\u9488\u5b54\u3001\u51f9\u9677\u6216\u5c40\u90e8\u8584\u5f31\u70b9\u3002\u7136\u540e\uff0c\u6e05\u6d01\u3001\u65e0\u6c14\u6ce1\u7684\u6eb6\u6db2\u5728\u7a33\u5b9a\u7684\u6d41\u91cf\u548c\u6e29\u5ea6\u4e0b\u88ab\u4fdd\u6301\u5e76\u8ba1\u91cf\u5230\u6d41\u5ef6\u5934\u3002.<\/p>\n\n\n\n

    3. \u6d41\u5ef6\u5230\u79fb\u52a8\u5e26\u6216\u6eda\u7b52\u4e0a<\/h2>\n\n\n\n

    A casting die or coating head lays the solution onto a smooth, moving carrier\u2014typically a belt or drum. The wet-layer profile depends on solution rheology, head geometry, gap or metering settings, carrier condition, \u7ebf\u901f\u5ea6<\/strong>, and flow stability. The objective is not merely to spread liquid; it is to establish a uniform wet web that will dry into the required thickness profile.<\/p>\n\n\n\n

    \u8f7d\u4f53\u6e05\u6d01\u5ea6\u548c\u8868\u9762\u72b6\u51b5\u5f71\u54cd\u5265\u79bb\u548c\u8868\u9762\u8d28\u91cf\u3002\u8fb9\u7f18\u63a7\u5236\u4e5f\u5f88\u91cd\u8981\uff0c\u56e0\u4e3a\u4e0d\u7a33\u5b9a\u7684\u8fb9\u7f18\u53ef\u80fd\u51cf\u5c11\u53ef\u7528\u5bbd\u5ea6\u6216\u5bfc\u81f4\u540e\u7eed\u5377\u7ed5\u95ee\u9898\u3002\u5728\u7ebf\u6d4b\u91cf\u53ef\u5728\u751f\u4ea7\u7ebf\u8bbe\u8ba1\u5141\u8bb8\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\uff0c\u4f46\u79bb\u7ebf\u539a\u5ea6\u56fe\u5bf9\u4e8e\u786e\u8ba4\u6210\u54c1\u5377\u6750\u4ecd\u7136\u91cd\u8981\u3002.<\/p>\n\n\n\n

    \"\u0631\u0633\u0645
    \u6982\u5ff5\u56fe\u793a\uff1a\u6eb6\u6db2\u6d41\u5ef6\u5230\u79fb\u52a8\u8f7d\u4f53\u4e0a\uff1b\u751f\u4ea7\u7ebf\u51e0\u4f55\u5f62\u72b6\u56e0\u5236\u9020\u5546\u800c\u5f02\u3002.<\/figcaption><\/figure>\n\n\n\n

    4. \u5728\u53d7\u63a7\u6761\u4ef6\u4e0b\u5e72\u71e5<\/h3>\n\n\n\n

    The wet web passes through heated drying zones, where water is removed progressively. Air temperature, humidity, velocity, exhaust, web temperature, residence time, and wet-\u8584\u819c\u539a\u5ea6<\/strong> interact. Drying too aggressively can form a surface skin while water remains below it, encouraging bubbles, internal stress, curl, or uneven moisture. Drying too slowly can limit output and leave a film that is difficult to release or wind consistently.<\/p>\n\n\n\n

    \u76ee\u6807\u662f\u5177\u6709\u53d7\u63a7\u6b8b\u7559\u6c34\u5206\u7684\u7a33\u5b9a\u8584\u819c\u2014\u2014\u800c\u4e0d\u4ec5\u4ec5\u662f\u6700\u5e72\u7684\u5e45\u6750\u3002PVOH\u5bf9\u6e7f\u6c14\u654f\u611f\uff0c\u5176\u6e7f\u5ea6\u72b6\u51b5\u5f71\u54cd\u67d4\u97e7\u6027\u3001\u7c98\u8fde\u503e\u5411\u3001\u5c3a\u5bf8\u3001\u64cd\u4f5c\u548c\u6d4b\u8bd5\u7ed3\u679c\u3002.<\/p>\n\n\n\n

    \n\n

    \u91cd\u8981\u63d0\u793a\uff1a<\/strong> \u516c\u5e03\u7684\u6e29\u5ea6\u6216\u5e72\u71e5\u65f6\u95f4\u4e0d\u662f\u53ef\u8f6c\u79fb\u7684\u751f\u4ea7\u8bbe\u5b9a\u70b9\u3002\u6709\u6548\u7684\u66f2\u7ebf\u5c5e\u4e8e\u786e\u5207\u7684\u6811\u8102\u3001\u914d\u65b9\u3001\u6e7f\u539a\u5ea6\u3001\u8bbe\u5907\u3001\u6c14\u6d41\u3001\u7ebf\u901f\u5ea6\u548c\u8d28\u91cf\u76ee\u6807\u3002.<\/p>\n\n<\/blockquote>\n\n\n\n

    5. \u91ca\u653e\u3001\u8c03\u7406\u3001\u5206\u5207\u548c\u5377\u7ed5<\/h2>\n\n\n\n

    \u5145\u5206\u5e72\u71e5\u540e\uff0c\u8584\u819c\u4ece\u8f7d\u4f53\u4e0a\u5265\u79bb\u5e76\u5f15\u5bfc\u901a\u8fc7\u7cbe\u6574\u5de5\u5e8f\u3002\u53bb\u9664\u8fb9\u7f18\u5e9f\u6599\uff0c\u5e45\u6750\u53ef\u80fd\u88ab\u8c03\u7406\uff0c\u4ee5\u4f7f\u6e7f\u5ea6\u548c\u6e29\u5ea6\u5728\u6700\u7ec8\u68c0\u67e5\u548c\u5377\u7ed5\u524d\u7a33\u5b9a\u3002\u5fc5\u987b\u63a7\u5236\u5f20\u529b\u3001\u538b\u533a\u538b\u529b\u3001\u5bf9\u9f50\u3001\u5377\u6750\u786c\u5ea6\u4ee5\u53ca\u63a5\u89e6\u8868\u9762\uff0c\u4ee5\u907f\u514d\u76b1\u7eb9\u3001\u671b\u8fdc\u955c\u6548\u5e94\u3001\u7c98\u8fde\u3001\u62c9\u4f38\u6216\u8868\u9762\u635f\u4f24\u3002.<\/p>\n\n\n\n

    The master roll is slit to the required width and wound on specified cores. Finished rolls are protected from uncontrolled humidity and temperature during storage and transport. Packaging is therefore part of process control: a roll that leaves the line within specification can still change if its \u062d\u0627\u062c\u0632 \u0627\u0644\u0631\u0637\u0648\u0628\u0629<\/strong>, sealing, or warehouse conditions are unsuitable.<\/p>\n\n\n\n

    \"\u0631\u0633\u0645
    \u6982\u5ff5\u56fe\u793a\uff1a\u901a\u7528PVOH\u8584\u819c\u5e45\u6750\u7684\u53d7\u63a7\u5e72\u71e5\u548c\u5377\u7ed5\u3002.<\/figcaption><\/figure>\n\n\n\n

    \u66ff\u4ee3\u5de5\u827a\uff1a\u70ed\u5851\u6027\u7194\u878d\u6324\u51fa<\/h3>\n\n\n\n

    PVOH\u8584\u819c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u70ed\u5851\u6027\u52a0\u5de5\u751f\u4ea7\uff0c\u5305\u62ec\u5439\u819c\u6216\u6d41\u5ef6\u6324\u51fa\u914d\u7f6e\u3002\u8fd9\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u5de5\u827a\u2014\u2014\u800c\u4e0d\u662f\u6eb6\u6db2\u6d41\u5ef6\u540e\u7684\u7cbe\u6574\u6b65\u9aa4\u3002\u6bd4\u8f83\u5236\u9020\u5de5\u827a\u7684\u7814\u7a76\u5c06\u6eb6\u6db2\u6d41\u5ef6\u3001\u5439\u819c\u6324\u51fa\u548c\u6d41\u5ef6\u6324\u51fa\u89c6\u4e3a\u4e0d\u540c\u7684\u6280\u672f\uff0c\u5e76\u8bf4\u660e\u4e86\u4e3a\u4ec0\u4e48\u7ed3\u679c\u5fc5\u987b\u4e0e\u6240\u4f7f\u7528\u7684\u5de5\u827a\u548c\u914d\u65b9\u76f8\u5173\u8054\u3002.<\/p>\n\n\n\n

    \u4e3a\u4ec0\u4e48PVOH\u66f4\u96be\u8fdb\u884c\u7194\u878d\u52a0\u5de5<\/h3>\n\n\n\n

    \u4f20\u7edf\u70ed\u5851\u6027\u5851\u6599\u88ab\u52a0\u70ed\u81f3\u6d41\u52a8\uff0c\u901a\u8fc7\u6a21\u5934\u6210\u578b\uff0c\u7136\u540e\u51b7\u5374\u3002PVOH\u66f4\u56f0\u96be\uff0c\u56e0\u4e3a\u5176\u6c22\u952e\u7ed3\u6784\u548c\u70ed\u654f\u6027\u5728\u5145\u5206\u6d41\u52a8\u548c\u6750\u6599\u964d\u89e3\u4e4b\u95f4\u7559\u4e0b\u4e86\u76f8\u5bf9\u72ed\u7a84\u7684\u5b9e\u9645\u7a97\u53e3\u3002\u6e7f\u5ea6\u3001\u589e\u5851\u3001\u7b49\u7ea7\u8bbe\u8ba1\u3001\u526a\u5207\u3001\u505c\u7559\u65f6\u95f4\u548c\u6e29\u5ea6\u5386\u53f2\u90fd\u5f88\u91cd\u8981\u3002.<\/p>\n\n\n\n

    \u5982\u679c\u6811\u8102\/\u914d\u65b9\u4e0d\u662f\u4e3a\u70ed\u5851\u6027\u52a0\u5de5\u8bbe\u8ba1\u7684\uff0c\u751f\u4ea7\u7ebf\u53ef\u80fd\u9762\u4e34\u4e0d\u7a33\u5b9a\u6d41\u52a8\u3001\u51dd\u80f6\u3001\u53d8\u8272\u3001\u6c89\u79ef\u7269\u3001\u6c14\u6ce1\u6216\u9000\u5316\u7684\u673a\u68b0\u548c\u6eb6\u89e3\u884c\u4e3a\u3002\u56e0\u6b64\uff0c\u7194\u878d\u5de5\u827a\u59cb\u4e8e\u9002\u5408\u6324\u51fa\u7684\u7cfb\u7edf\uff0c\u800c\u4e0d\u662f\u5047\u8bbe\u4efb\u4f55\u6eb6\u6db2\u7ea7PVOH\u7c89\u672b\u90fd\u53ef\u4ee5\u9001\u5165\u6807\u51c6\u8584\u819c\u6324\u51fa\u673a\u3002.<\/p>\n\n\n\n

    \u6324\u51fa\u7ea7\u7cfb\u7edf\u4e2d\u7684\u53d8\u5316<\/h2>\n\n\n\n

    \u6324\u51fa\u7ea7\u7cfb\u7edf\u7ecf\u8fc7\u914d\u5236\u4ee5\u5b9e\u73b0\u53d7\u63a7\u6d41\u52a8\u548c\u7a33\u5b9a\u6027\u3002\u8fdb\u6599\u6e7f\u5ea6\u548c\u589e\u5851\u5242\u5206\u5e03\u5f97\u5230\u7ba1\u7406\uff1b\u6750\u6599\u901a\u8fc7\u6324\u51fa\u673a\u8f93\u9001\u548c\u6df7\u5408\uff1b\u7194\u4f53\u538b\u529b\u548c\u6e29\u5ea6\u5386\u53f2\u5f97\u5230\u63a7\u5236\uff1b\u8584\u819c\u901a\u8fc7\u5e73\u6a21\u6216\u73af\u5f62\u6a21\u5934\u6210\u578b\uff0c\u7136\u540e\u51b7\u5374\u3001\u6d4b\u539a\u3001\u4fee\u8fb9\u548c\u5377\u7ed5\u3002.<\/p>\n\n\n\n

    \n\n\n\n\n\n\n
    \u6bd4\u8f83\u70b9<\/th>\n\u6eb6\u6db2\u6d41\u5ef6\u6cd5<\/th>\n\u70ed\u5851\u6027\u7194\u878d\u6324\u51fa<\/th>\n<\/tr><\/thead>
    \u8d77\u59cb\u8fdb\u6599<\/td>\n\u7ecf\u8fc7\u8fc7\u6ee4\u3001\u8131\u6c14\u7684PVOH\u6c34\u6eb6\u6db2\u914d\u65b9<\/td>\n\u53ef\u70ed\u5851\u6027\u52a0\u5de5\u7684PVOH\u590d\u5408\u7269<\/td>\n<\/tr>\n
    \u8584\u819c\u6210\u578b<\/td>\n\u5c06\u6e7f\u5c42\u8ba1\u91cf\u5230\u5e26\u6216\u6eda\u7b52\u4e0a<\/td>\n\u70ed\u52a0\u538b\u6750\u6599\u901a\u8fc7\u6a21\u5934\u6210\u578b<\/td>\n<\/tr>\n
    \u4e3b\u8981\u53bb\u9664\u6b65\u9aa4<\/td>\n\u5fc5\u987b\u5728\u53d7\u63a7\u5e72\u71e5\u533a\u53bb\u9664\u6c34\u5206<\/td>\n\u907f\u514d\u4e86\u5927\u91cf\u6d41\u5ef6\u6c34\uff1b\u6210\u578b\u540e\u5fc5\u987b\u53bb\u9664\u70ed\u91cf<\/td>\n<\/tr>\n
    \u0627\u0644\u0636\u0648\u0627\u0628\u0637 \u0627\u0644\u062d\u0631\u062c\u0629<\/td>\n\u5173\u952e\u63a7\u5236\u53d8\u91cf<\/td>\n\u6eb6\u6db2\u5747\u5300\u6027\u3001\u6d41\u53d8\u6027\u3001\u6c14\u6ce1\u3001\u5e72\u71e5\u3001\u6b8b\u7559\u6c34\u5206<\/td>\n<\/tr>\n
    \u8fdb\u6599\u72b6\u51b5\u3001\u589e\u5851\u3001\u526a\u5207\u3001\u505c\u7559\u65f6\u95f4\u3001\u70ed\u5386\u53f2<\/td>\n\u4e3b\u8981\u8d44\u683c\u95ee\u9898<\/td>\n\u662f\u5426\u5df2\u9488\u5bf9\u8bbe\u5907\u548c\u70ed\u7a97\u53e3\u9a8c\u8bc1\u4e86\u8be5\u7b49\u7ea7\/\u914d\u65b9\uff1f<\/td>\n<\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n

    \u4e24\u79cd\u5de5\u827a\u8def\u7ebf\u5747\u975e\u5929\u7136\u4f18\u8d8a\u3002\u6b63\u786e\u9009\u62e9\u53d6\u51b3\u4e8e\u53ef\u7528\u7684\u6811\u8102\u6280\u672f\u3001\u76ee\u6807\u8584\u819c\u6027\u80fd\u3001\u751f\u4ea7\u89c4\u6a21\u3001\u80fd\u6e90\u548c\u6c34\u8d44\u6e90\u7ba1\u7406\u3001\u8bbe\u5907\u6761\u4ef6\u3001\u8d28\u91cf\u80fd\u529b\u4ee5\u53ca\u5e94\u7528\u9a8c\u8bc1\u3002.<\/p>\n\n\n\n

    \"\u0631\u0633\u0645
    \u6982\u5ff5\u8bf4\u660e\uff1a\u70ed\u5851\u6027PVOH\u8584\u819c\u6324\u51fa\u9700\u8981\u7ecf\u8fc7\u9a8c\u8bc1\u7684\u7b49\u7ea7\u3001\u914d\u65b9\u548c\u5de5\u827a\u7a97\u53e3\u3002.<\/figcaption><\/figure>\n\n\n\n

    \u51b3\u5b9a\u8584\u819c\u8d28\u91cf\u7684\u8fc7\u7a0b\u63a7\u5236<\/h3>\n\n\n\n

    \u8584\u819c\u8d28\u91cf\u6e90\u4e8e\u6750\u6599\u3001\u914d\u65b9\u3001\u8bbe\u5907\u3001\u73af\u5883\u548c\u64cd\u4f5c\u89c4\u8303\u4e4b\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u3002\u7f3a\u9677\u662f\u8fdb\u884c\u8c03\u67e5\u7684\u8bc1\u636e\uff0c\u800c\u975e\u5355\u4e00\u539f\u56e0\u7684\u8bc1\u660e\u3002\u5236\u9020\u5546\u9700\u8981\u53ef\u8ffd\u6eaf\u7684\u6279\u6b21\u8bb0\u5f55\u548c\u8d8b\u52bf\u6570\u636e\uff0c\u4ee5\u5c06\u539f\u6750\u6599\u53d8\u5316\u4e0e\u6eb6\u89e3\u3001\u6d41\u5ef6\u3001\u5e72\u71e5\u3001\u6324\u51fa\u6216\u5377\u7ed5\u6548\u5e94\u533a\u5206\u5f00\u6765\u3002.<\/p>\n\n\n\n

    \u6eb6\u6db2\u8d28\u91cf\u4e0e\u6d41\u53d8\u5b66<\/h2>\n\n\n\n

    \u5bf9\u4e8e\u6d41\u5ef6\u5de5\u827a\uff0c\u56fa\u542b\u91cf\u3001\u7c98\u5ea6\u3001\u6e29\u5ea6\u3001\u6df7\u5408\u5386\u53f2\u4ee5\u53ca\u914d\u65b9\u7ec4\u5206\u7684\u5206\u6563\u6027\u4f1a\u5f71\u54cd\u6eb6\u6db2\u6d41\u7ecf\u8fc7\u6ee4\u5668\u548c\u6d41\u5ef6\u6a21\u5934\u7684\u6d41\u52a8\u65b9\u5f0f\u3002\u9897\u7c92\u3001\u51dd\u80f6\u3001\u6ce1\u6cab\u6216\u6c61\u67d3\u7269\u53ef\u80fd\u5bfc\u81f4\u6761\u7eb9\u3001\u6591\u70b9\u3001\u9488\u5b54\u3001\u8584\u5f31\u533a\u57df\u6216\u6a21\u5934\u6c89\u79ef\u7269\u3002\u7a33\u5b9a\u7684\u6eb6\u6db2\u9648\u5316\u65f6\u95f4\u548c\u4fdd\u6301\u6761\u4ef6\u4e5f\u5f88\u91cd\u8981\uff0c\u56e0\u4e3a\u6eb6\u6db2\u5728\u7b49\u5f85\u6d41\u5ef6\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u4f1a\u53d1\u751f\u53d8\u5316\u3002.<\/p>\n\n\n\n

    \u5e72\u71e5\u66f2\u7ebf\u4e0e\u6b8b\u4f59\u6c34\u5206<\/h3>\n\n\n\n

    \u5e72\u71e5\u4e0d\u4ec5\u51b3\u5b9a\u7ebf\u901f\u5ea6\u3002\u84b8\u53d1\u66f2\u7ebf\u5f71\u54cd\u8868\u9762\u5f62\u6210\u3001\u5185\u5e94\u529b\u3001\u5265\u79bb\u3001\u5377\u66f2\u4ee5\u53ca\u8fdb\u5165\u5377\u7ed5\u65f6\u7684\u6c34\u5206\u72b6\u6001\u3002\u6b8b\u4f59\u6c34\u5206\u968f\u540e\u4f1a\u5f71\u54cd\u52a0\u5de5\u548c\u50a8\u5b58\u8fc7\u7a0b\u4e2d\u7684\u67d4\u97e7\u6027\u548c\u7c98\u8fde\u6027\u3002\u7531\u4e8ePVOH\u4f1a\u4e0e\u73af\u5883\u4ea4\u6362\u6c34\u5206\uff0c\u56e0\u6b64\u5728\u6bd4\u8f83\u6279\u6b21\u65f6\uff0c\u5fc5\u987b\u63a7\u5236\u8c03\u8282\u548c\u6d4b\u8bd5\u73af\u5883\u3002.<\/p>\n\n\n\n

    \u539a\u5ea6\u3001\u8868\u9762\u4e0e\u5377\u7ed5\u63a7\u5236<\/h3>\n\n\n\n

    \u539a\u5ea6\u504f\u5dee\u53ef\u80fd\u6e90\u4e8e\u8ba1\u91cf\u3001\u6a21\u5934\u6216\u6d41\u5ef6\u8f8a\u72b6\u6001\u3001\u5e45\u6750\u901f\u5ea6\u3001\u8f7d\u4f53\u51e0\u4f55\u5f62\u72b6\u3001\u70ed\u5206\u5e03\u6216\u6a2a\u5411\u6d41\u52a8\u3002\u8868\u9762\u75d5\u8ff9\u53ef\u80fd\u6765\u81ea\u8f7d\u4f53\u3001\u6c61\u67d3\u7269\u3001\u64cd\u4f5c\u6216\u63a5\u89e6\u8f8a\u3002\u5377\u7ed5\u7f3a\u9677\u53ef\u80fd\u53cd\u6620\u5f20\u529b\u3001\u5bf9\u4e2d\u3001\u538b\u8f8a\u3001\u5377\u6750\u786c\u5ea6\u3001\u8fb9\u7f18\u8f6e\u5ed3\u6216\u6c34\u5206\u4e0d\u5747\u5300\u3002.<\/p>\n\n\n\n

    \n\n\n\n\n\n\n
    \u89c2\u5bdf\u73b0\u8c61<\/th>\n\u53ef\u80fd\u9700\u8981\u8c03\u67e5\u7684\u5de5\u827a\u65b9\u5411<\/th>\n\u0627\u0644\u062a\u062d\u0642\u0642<\/th>\n<\/tr><\/thead>
    \u6c14\u6ce1\u6216\u9488\u5b54<\/td>\n\u6da6\u6e7f\u4e0d\u826f\u3001\u6ce1\u6cab\u3001\u8131\u6c14\u3001\u6c61\u67d3\u3001\u8868\u9762\u5feb\u901f\u5e72\u71e5<\/td>\n\u6eb6\u6db2\u68c0\u67e5\u3001\u8fc7\u6ee4\/\u8131\u6c14\u8bb0\u5f55\u3001\u900f\u5149\u68c0\u67e5<\/td>\n<\/tr>\n
    \u539a\u5ea6\u6761\u7eb9\u6216\u6761\u75d5<\/td>\n\u8ba1\u91cf\u7a33\u5b9a\u6027\u3001\u6a21\u5934\u72b6\u6001\u3001\u6d41\u53d8\u5b66\u3001\u5e45\u6750\u901f\u5ea6\u3001\u8f7d\u4f53\u72b6\u6001<\/td>\n\u6a2a\u5411\u539a\u5ea6\u5206\u5e03\u56fe\u4e0e\u5de5\u827a\u8d8b\u52bf<\/td>\n<\/tr>\n
    \u5377\u66f2\u6216\u5e73\u6574\u5ea6\u5dee<\/td>\n\u5e72\u71e5\u4e0d\u5747\u5300\u3001\u6b8b\u4f59\u6c34\u5206\u68af\u5ea6\u3001\u5e45\u6750\u5f20\u529b<\/td>\n\u8c03\u8282\u540e\u5e73\u6574\u5ea6\u68c0\u67e5\u4e0e\u6c34\u5206\u5ba1\u6838<\/td>\n<\/tr>\n
    \u7c98\u8fde\u6216\u9000\u5377\u56f0\u96be<\/td>\n\u6c34\u5206\u3001\u8868\u9762\u72b6\u6001\u3001\u5377\u7ed5\u538b\u529b\u3001\u50a8\u5b58\u73af\u5883<\/td>\n\u5728\u6307\u5b9a\u8c03\u8282\u6761\u4ef6\u4e0b\u7684\u5377\u6750\u9000\u5377\u8bc4\u4f30<\/td>\n<\/tr>\n
    \u8106\u6027\u6216\u62c9\u4f38\u6027\u80fd\u53d8\u5316<\/td>\n\u914d\u65b9\u3001\u6c34\u5206\u72b6\u6001\u3001\u70ed\u5386\u53f2\u3001\u539a\u5ea6\u504f\u5dee<\/td>\n\u5728\u673a\u5668\u65b9\u5411\u548c\u6a2a\u5411\u8fdb\u884c\u8c03\u8282\u540e\u7684\u673a\u68b0\u6027\u80fd\u6d4b\u8bd5<\/td>\n<\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n

    \u6b64\u8868\u4e3a\u8bca\u65ad\u56fe\u8c31\uff0c\u800c\u975e\u9a8c\u6536\u6807\u51c6\u3002\u76f8\u540c\u7684\u53ef\u89c1\u75c7\u72b6\u53ef\u80fd\u6709\u591a\u79cd\u539f\u56e0\uff0c\u56e0\u6b64\u7ea0\u6b63\u63aa\u65bd\u5e94\u57fa\u4e8e\u5b9e\u6d4b\u8bc1\u636e\u3002.<\/p>\n\n\n\n

    \u5236\u9020\u5546\u5982\u4f55\u9a8c\u8bc1\u6210\u54c1\u8584\u819c<\/h2>\n\n\n\n

    \u653e\u884c\u6d4b\u8bd5\u5e94\u5c06\u5236\u9020\u63a7\u5236\u4e0e\u9884\u671f\u7684\u52a0\u5de5\u548c\u4f7f\u7528\u8054\u7cfb\u8d77\u6765\u3002\u53ea\u6709\u5f53\u8bc1\u4e66\u503c\u6807\u8bc6\u4e86\u8584\u819c\u6279\u53f7\u3001\u6d4b\u8bd5\u65b9\u6cd5\u3001\u8bd5\u6837\u65b9\u5411\u3001\u8c03\u8282\u6761\u4ef6\u3001\u5355\u4f4d\u548c\u9a8c\u6536\u6807\u51c6\u65f6\uff0c\u8be5\u503c\u624d\u6709\u610f\u4e49\u3002.<\/p>\n\n\n\n

    \u539a\u5ea6\u4e0e\u5916\u89c2\u5747\u5300\u6027<\/h3>\n\n\n\n

    Thickness is measured across and along the web using a defined sampling plan ASTM D6988 is one guide.<\/p>\n\n\n\n

    \u4ec5\u51ed\u5e73\u5747\u503c\u53ef\u80fd\u63a9\u76d6\u539a\u5ea6\u5206\u5e03\u7684\u53d8\u5316\u3002\u4e70\u65b9\u5e94\u8be2\u95ee\u53d6\u6837\u4f4d\u7f6e\u548c\u5c42\u6570\u3001\u662f\u5426\u62a5\u544a\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\uff0c\u4ee5\u53ca\u8be5\u65b9\u6cd5\u4e0e\u627f\u8bfa\u7684\u5377\u6750\u516c\u5dee\u4e4b\u95f4\u7684\u5173\u7cfb\u3002.<\/p>\n\n\n\n

    \u529b\u5b66\u4e0e\u5bc6\u5c01\u6027\u80fd<\/h3>\n\n\n\n

    ASTM D882\u5728\u5176\u89c4\u5b9a\u8303\u56f4\u5185\u6db5\u76d6\u4e86\u8584\u5851\u6599\u7247\u7684\u62c9\u4f38\u6d4b\u8bd5\u3002\u5bf9\u4e8ePVOH\u8584\u819c\uff0c\u62a5\u544a\u5e94\u6307\u660e\u673a\u5668\u65b9\u5411\u6216\u6a2a\u5411\u3001\u8bd5\u6837\u539a\u5ea6\u3001\u8c03\u8282\u73af\u5883\u3001\u6d4b\u8bd5\u901f\u5ea6\u3001\u5939\u6301\u65b9\u5f0f\u53ca\u5931\u6548\u884c\u4e3a\u3002\u672a\u7ecf\u9650\u5b9a\uff0c\u4e0d\u5e94\u76f4\u63a5\u6bd4\u8f83\u4e0d\u540c\u65b9\u5411\u6216\u6761\u4ef6\u4e0b\u7684\u6d4b\u8bd5\u503c\u3002.<\/p>\n\n\n\n

    If the film will be heat sealed, the seal must be made under defined jaw temperature, pressure, dwell time, geometry, and conditioning. ASTM F88\/F88M measures \u0642\u0648\u0629 \u0627\u0644\u062e\u062a\u0645<\/strong> and identifies failure mode for flexible barrier materials, but it does not set a universal acceptable value or prove complete package integrity.<\/p>\n\n\n\n

    \u6eb6\u89e3\u6027\u4e0e\u4ea7\u54c1\u517c\u5bb9\u6027<\/h3>\n\n\n\n

    \u201c\u82e5\u65e0\u65b9\u6cd5\u8bf4\u660e\uff0c\u201d\u6c34\u6eb6\u6027\u201d\u4e00\u8bcd\u662f\u4e0d\u5b8c\u6574\u7684\u3002\u6eb6\u89e3\u6216\u5d29\u89e3\u7ed3\u679c\u53ef\u80fd\u968f\u6c34\u6e29\u3001\u6c34\u8d28\u3001\u6405\u62cc\u3001\u8bd5\u6837\u5c3a\u5bf8\u3001\u8584\u819c\u539a\u5ea6\u3001\u8c03\u8282\u6761\u4ef6\u3001\u66b4\u9732\u65f6\u95f4\u53ca\u6240\u7528\u7ec8\u70b9\u800c\u53d8\u5316\u3002\u4e00\u4efd\u6709\u7528\u7684\u89c4\u8303\u5e94\u8bf4\u660e\u6240\u6709\u8fd9\u4e9b\u6761\u4ef6\uff0c\u5e76\u5728\u76f8\u5173\u60c5\u51b5\u4e0b\u533a\u5206\u8584\u819c\u7834\u88c2\u3001\u5d29\u89e3\u548c\u5b8c\u5168\u6eb6\u89e3\u3002.<\/p>\n\n\n\n

    The packed product can also.<\/p>\n\n\n\n

    \n\n

    \u91cd\u8981\u63d0\u793a\uff1a<\/strong> \u8584\u819c\u6570\u636e\u8868\u6216\u5b64\u7acb\u7684\u8584\u819c\u6d4b\u8bd5\u4e0d\u80fd\u8bc1\u660e\u6210\u54c1\u5305\u88c5\u5408\u683c\u3002\u9a8c\u8bc1\u5fc5\u987b\u5305\u62ec\u704c\u88c5\u5e76\u5bc6\u5c01\u7684\u7cfb\u7edf\u3001\u5176\u50a8\u5b58\u5206\u9500\u8fc7\u7a0b\u53ca\u5176\u6700\u7ec8\u4f7f\u7528\u7684\u6c34\u6761\u4ef6\u3002.<\/p>\n\n<\/blockquote>\n\n\n\n

    \"\u0631\u0633\u0645
    \u6982\u5ff5\u8bf4\u660e\uff1aPVOH\u8584\u819c\u6d4b\u8bd5\u5fc5\u987b\u4f7f\u7528\u89c4\u5b9a\u7684\u8c03\u8282\u6761\u4ef6\u3001\u8bd5\u6837\u548c\u6c34\u6761\u4ef6\u3002.<\/figcaption><\/figure>\n\n\n\n

    \u4e70\u65b9\u5728\u6279\u51c6PVA\u8584\u819c\u524d\u5e94\u660e\u786e\u7684\u89c4\u683c<\/h2>\n\n\n\n

    A useful specification starts with the application rather than with a generic request for \u201c\u0641\u064a\u0644\u0645 PVA<\/strong>.\u201d Before approval, align the following inputs with the supplier and converter:<\/p>\n\n\n\n