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class="twoCol"><div id="ujwghj3" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_baozhuang/">包裝</a>?<a href="http://www.cdcfah.com/cp/second-baozhuang_slbzcl/">塑料包裝材料</a>?<a href="http://www.cdcfah.com/cp/third-slbzcl_bzbmex/">包裝薄膜</a>?溫州收縮膜價格廈門市立南塑膠供應(yīng)</p><div id="q3gnp22" class="leftbox clearfix"><h1>溫州收縮膜價格廈門市立南塑膠供應(yīng)</h1><div id="zxzwtn2" class="proBig"><div id="txuhegn" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/xmlinan/637282493668535156/3901381.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8jlikwt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/xmlinan/637282493668535156/3901381.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ujlxp89" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>福建省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>溫州收縮膜價格</p><p><span>***更新：</span>2020-06-27 16:34:22</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="s2mebif" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">廈門市立南塑膠科技有限公司</a></p><p><span>聯(lián)系人：</span>吳先生</p><p><span>郵箱: </span>2316300657@qq.com</p><p><span>電話: </span>13959278486</p><p><span>傳真: </span>0592_</p><p><span>網(wǎng)址: </span>http://www.xmlinan.cn</p><p><span>手機(jī): </span>0592-7119325</p><p><span>地址: </span>新民鎮(zhèn)西塘祖厝邊路305號2樓</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="iskhegn" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="y8if2b3" class="box"><p><p> 關(guān)于影響pof收縮膜熱封強(qiáng)度的原因分析：一、熱封時間：自動包裝機(jī)或老式制袋機(jī)的熱封時間是由機(jī)速決定的。在熱封溫度和熱封壓力不變的情況下，熱封時間越長，熱封層之間結(jié)合得越牢固。但假如熱封時間過長，pof收縮膜的熱封部位則會出現(xiàn)褶皺、不平現(xiàn)象，嚴(yán)重影響產(chǎn)品的外觀質(zhì)量。二、熱封壓力：為了保證產(chǎn)品的熱封強(qiáng)度，一定的熱封壓力是必不可少的，溫州收縮膜價格。所以，在熱封過程中要求熱封壓力適中、均勻。pof收縮膜廠家特別提醒大家，如果熱封壓力不夠或不均勻，溫州收縮膜價格，溫州收縮膜價格，則會使產(chǎn)品的熱封部位產(chǎn)生氣泡，導(dǎo)致熱封不良。三、熱封溫度：熱封溫度直接影響著收縮膜的熱封強(qiáng)度。這也是重要的一個地方，需要我們重視一下。 </p> <p> <br /> </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州收縮膜價格" src="https://tyunfile.71360.com/UploadFile/xmlinan/637282493668535156/3901381.png"></div><p style="text-indent:25px">熱收縮膜加熱產(chǎn)生收縮的原理：普通塑料薄膜的大分子處于自然卷曲的狀態(tài)，受熱時一般不會發(fā)生收縮。收縮膜的情況則不一樣，它的成膜經(jīng)歷了兩個步驟，原料熔化后在規(guī)定溫度并在外力作用下使薄膜拉伸，大分子彼此之間不能相互滑移，不自然狀態(tài)即被凍結(jié)起來。在室溫下，塑料大分子的活動能力差，所以不能靠分子運(yùn)動來消滅這種不自然狀態(tài)，這就是室溫下熱收縮薄膜并不收縮的原因。然而這只是一種表面現(xiàn)象，這種看上去很穩(wěn)定的熱收縮薄膜內(nèi)部已隱伏著不穩(wěn)定的因素。當(dāng)熱收縮薄膜重新加熱到一定的溫度，其凍結(jié)了的大分子會重新開始活動起來，從不自然狀態(tài)力圖恢復(fù)到自然狀態(tài)，結(jié)果產(chǎn)生收縮。這一情況與拉長的橡皮筋在放松后又回彈在本質(zhì)上是一樣的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州收縮膜價格" src="https://tyunfile.71360.com/UploadFile/xmlinan/637282494236562500/8572151.png"></div><p style="text-indent:25px">POF與PE、PVC收縮膜物理性能優(yōu)劣比較：加工性能 POF加工過程不產(chǎn)生水分也不會粘著于封棒上,保養(yǎng)及作業(yè)容易.高韌性,平滑性及抗揉搓性使其適用于高速生產(chǎn)線自動包裝. PE加工過程不產(chǎn)生水分,也不粘于封棒上,保養(yǎng)及作業(yè)容易.高韌,低揉搓性,可用于較高速生產(chǎn)線自動包裝. PVC加工過程會產(chǎn)生揮發(fā)分,易造成機(jī)械損壞,又易粘著于封棒上,作業(yè)不方便,保養(yǎng)困難. POF收縮包裝后,封口處四角柔軟,不會割傷人手,也耐揉搓. PE收縮包裝后,封口四角柔軟,不會割傷人手. PVC收縮包裝后,封口處四角硬且尖銳,易割傷***.環(huán)保衛(wèi)生 POF無害性，加工時不產(chǎn)生有害氣味。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/413340.html</p></div></div></div></div></div><div id="p8zrlxz" class="page-right twoColRt"><div id="anr733k" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mro84fy" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="vpwt2pm" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個科目真誠推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" 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