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公开(公告)号：US4405725A
公开(公告)日：1983-09-20
申请号：US817308
申请日：1977-07-20
CPC分类号： C08G18/79 , C08G18/092 , C08G18/1825 , C08G18/6492 , C08G18/7664 , C08G2101/0025
摘要： Foams having improved flammability characteristics are prepared by reacting a polyaryl polyalkylene polyisocyanate with 2 to 15 parts of an active hydrogen compound having a molecular weight of from about 350 to about 10,000 and from one to six active hydrogen containing groups as determined by the Zerewitinoff method in the presence of a blowing agent, a stabilizer and a catalyst.
摘要翻译： 具有改进的可燃性特征的泡沫通过聚芳基聚亚烷基多异氰酸酯与2至15份分子量为约350至约10,000的活性氢化合物和1至6个含有活性氢的基团反应制备，通过Zerewitinoff方法测定 发泡剂，稳定剂和催化剂的存在。
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公开(公告)号：US5063005A
公开(公告)日：1991-11-05
申请号：US445505
申请日：1989-12-04
CPC分类号： B29C43/52 , B29C43/24 , B29C55/005 , B29C61/06 , B29C71/04 , B29C2791/001 , B29K2023/06 , B29K2023/0641 , B29K2023/083 , B29K2105/24 , B29K2995/0049
摘要： Novel processes for preparing a heat shrinkable film by first forming a polyolefinic film on a three-roll calender in which the second and third rolls rotate at about the same speed and the first roll rotates at a slower speed, the top roll is heated to a temperature above the melting point of the polyolefinic material, the middle roll is heated to an elevated temperature below its melting point, and the bottom roll is chilled relative thereto; thereafter subjecting one surface of the resulting film to irradiation from a low energy electron beam at a voltage such that the irradiation dose at the half-depth of the film is approximately one-half the dose at the irradiated surface and at a current to film surface speed ratio such that the surface dose would effect crosslinking sufficient to impart to said film a 100% modulus at 150.degree. C. of from about 10 to about 100 pounds per square inch, if the dose at any depth in the film were substantially equal to the surface dose; and then subjecting the opposed surface of the film to irradiation from a low energy beam at a voltage and at a current to speed ratio substantially equal to that in the preceding step, such that the 100% modulus at 150.degree. C. of the film as a whole is about 10 to about 100 pounds per square inch and the film is characterized as being substantially uniformly crosslinked throughout its thickness.
摘要翻译： 通过首先在三辊压光机上形成聚烯烃膜，其中第二和第三辊以大约相同的速度旋转并且第一辊以较慢的速度旋转，制备热收缩膜的新颖方法，将顶辊加热至 温度高于聚烯烃材料的熔点，中间辊被加热到低于其熔点的高温，并且底辊相对于其冷却; 然后使所得膜的一个表面以低能电子束照射，使得膜的半深度处的照射剂量约为被照射表面和电流到膜表面处的剂量的一半 速度比，使得如果膜中任何深度处的剂量基本上等于或等于，表面剂量将影响足以使所述膜在150℃下的100％模量为约10至约100磅/平方英寸的交联 表面剂量; 然后以相对于前述步骤的电压和电流与速度比基本上相同的方式将薄膜的相对表面从低能量束照射，使得膜的150℃下的100％模量为 整体为约10至约100磅/平方英寸，并且该膜的特征在于其整个厚度基本均匀地交联。
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公开(公告)号：US5158815A
公开(公告)日：1992-10-27
申请号：US610195
申请日：1989-12-26
CPC分类号： B29C61/10 , B32B27/08 , F16L47/20 , F16L58/1063 , Y10S428/913 , Y10T428/1328 , Y10T428/1443 , Y10T428/24752 , Y10T428/2826 , Y10T428/2848
摘要： A closure device for shrinkwraps comprising a high temperature-resistant, flame-resistant and dimensionally stable backing layer, a cross linked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of the backing layer; a heat-shrinkable film dimensionally smaller than the pressure sensitive adhesive layer positioned on the adhesive layer so as to maintain a peripheral area of exposed pressure sensitive adhesive; and an optional release liner applied so as to protect the exposed pressure sensitive adhesive layer from premature and unwanted contact prior to use.
摘要翻译： 一种用于收缩包装的封闭装置，其包括耐高温，阻燃和尺寸稳定的背衬层，交联，耐高温，抗剪切和阻燃的压敏粘合剂，其施加到背衬层的一个表面上; 尺寸小于位于粘合剂层上的压敏粘合剂层以便保持暴露的压敏粘合剂的周边区域的热收缩膜; 和可选的剥离衬垫，以便在使用之前保护暴露的压敏粘合剂层免于过早和不期望的接触。
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公开(公告)号：US4961978A
公开(公告)日：1990-10-09
申请号：US318863
申请日：1989-03-06
CPC分类号： F16L58/1063 , B29C61/10 , B32B27/08 , F16L47/20 , Y10S428/913 , Y10T428/1414 , Y10T428/24752 , Y10T428/2826 , Y10T428/2848
摘要： A closure device for shrinkwraps comprising a high temperature-resistant, flame-resistant and dimensionally stable backing layer, a cross linked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of the backing layer; a heat-shrinkable film dimensionally smaller than the pressure sensitive adhesive layer positioned on the adhesive layer so as to maintain a peripheral area of exposed pressure sensitive adhesive; and an optional release liner applied so as to protect the exposed pressure sensitive adhesive layer from premature and unwanted contact prior to use.
摘要翻译： 一种用于收缩包装的封闭装置，其包括耐高温，阻燃和尺寸稳定的背衬层，交联，耐高温，抗剪切和阻燃的压敏粘合剂，其施加到背衬层的一个表面上; 尺寸小于位于粘合剂层上的压敏粘合剂层以便保持暴露的压敏粘合剂的周边区域的热收缩膜; 和可选的剥离衬垫，以便在使用之前保护暴露的压敏粘合剂层免于过早和不期望的接触。
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公开(公告)号：US5022941A
公开(公告)日：1991-06-11
申请号：US456719
申请日：1989-12-26
CPC分类号： F16L47/20 , B29C61/10 , B32B27/08 , F16L58/1063 , Y10T428/1443 , Y10T428/1452
摘要： A closure device for shrinkwraps comprising a high temperature-resistant, flame-resistant and dimensionally stable backing layer, a cross linked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of the backing layer; a heat-shrinkable film dimensionally smaller than the pressure sensitive adhesive layer positioned on the adhesive layer so as to maintain a peripheral area of exposed pressure sensitive adhesive; and an optional release liner applied so as to protect the exposed pressure sensitive adhesive layer from premature and unwanted contact prior to use.
摘要翻译： 一种用于收缩包装的封闭装置，其包括耐高温，阻燃和尺寸稳定的背衬层，交联，耐高温，抗剪切和阻燃的压敏粘合剂，其施加到背衬层的一个表面上; 尺寸小于位于粘合剂层上的压敏粘合剂层以便保持暴露的压敏粘合剂的周边区域的热收缩膜; 和可选的剥离衬垫，以便在使用之前保护暴露的压敏粘合剂层免于过早和不期望的接触。
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