CN110753615A - 隔热片及使用该隔热片的层叠隔热片 - Google Patents

隔热片及使用该隔热片的层叠隔热片 Download PDF

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CN110753615A
CN110753615A CN201880037339.5A CN201880037339A CN110753615A CN 110753615 A CN110753615 A CN 110753615A CN 201880037339 A CN201880037339 A CN 201880037339A CN 110753615 A CN110753615 A CN 110753615A
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heat insulating
heat
protective sheet
insulating sheet
sheet
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河村典裕
佐藤千寻
臼井良辅
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Panasonic Intellectual Property Management Co Ltd
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    • F16L59/00—Thermal insulation in general
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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Abstract

本发明的目的在于提供一种即使形状变大也难以破损的隔热片及使用该隔热片的层叠隔热片。提供一种隔热片，其使用无纺布和在该无纺布的内部的空间担载有干凝胶的隔热体，其构成为隔热体在俯视时的内部区域具有多个通孔，在隔热体的两面上设有保护片，在隔热体的周围及通孔的内侧保护片彼此接合。

Description

隔热片及使用该隔热片的层叠隔热片
技术领域
本发明涉及作为隔热对策而使用的隔热片以及使用该隔热片的层叠隔热片。
背景技术
近年来，节能化的呼声增大，作为其实现方法，也有通过设备的保温来提高能量效率的方法。为了实现该保温，要求隔热效果优异的隔热片。因此，会使用通过使无纺布担载二氧化硅干凝胶而使导热率低于空气的隔热片。
需要说明的是，作为与本申请发明相关的现有技术文献信息，例如已知专利文献1。
现有技术文献
专利文献1：日本特开2011-136859号公报
发明内容
然而，上述隔热片缺乏粘接性，另外，由于二氧化硅干凝胶容易脱离，因此需要保护片。另外，在隔热片的形状大型化时，如果不固定该保护片，则对于外力容易发生破损。
本发明针对该课题，其目的在于提供一种即使形状变大也难以破损的隔热片及其制造方法。
本发明为了解决上述课题，提供一种隔热片，其使用无纺布和在该无纺布的内部空间担载有干凝胶的隔热体。隔热体在俯视时的内部区域具有多个通孔，在隔热体的两面中的一个面上设有第一保护片，在另一个面上设有第二保护片。并构成为，在隔热体的周围及通孔的内侧第一保护片与第二保护片相接合。
通过如上所述地构成，由于在隔热体的周围及通孔的内侧保护片彼此接合，因此能够得到即使形状变大也难以破损的隔热片。
附图说明
图1是本发明的一个实施方式中的隔热片的分解立体图。
图2是本发明的一个实施方式中的隔热片的剖视图。
图3是本发明的一个实施方式中的其他的隔热片的剖视图。
图4是本发明的一个实施方式中的又一其他的隔热片的剖视图。
图5是本发明的一个实施方式中的层叠隔热片的剖视图。
图6是本发明的一个实施方式中的其他的层叠隔热片的剖视图。
具体实施方式
以下，参照附图对本发明的一个实施方式的隔热片进行说明。
图1是本发明的一个实施方式中的隔热片15的分解立体图，图2是其剖视图。
隔热体11通过在内部具有空间且由聚对苯二甲酸乙二醇酯(以下记作PET)形成的无纺布的空间内担载二氧化硅干凝胶而构成。二氧化硅干凝胶具有限制空气分子的运动的纳米尺寸的空隙结构，该隔热体11的导热率为0.018～0.024W/m·K。需要说明的是，该二氧化硅干凝胶是凝胶干燥后的状态的广义的干凝胶，不仅可以通过通常的干燥得到，也可以通过超临界干燥、冷冻干燥等方法得到。
这里，隔热体11的厚度约为0.5mm，大小约为100mm见方。并且，在该隔热体11的俯视时的内部区域，以约25mm的间隔设有多个直径约2mm的通孔12。
在该隔热体11的两面中的一个面上设有厚度约0.01mm的由PET形成的第一保护片13a，在另一个面上设有第二保护片13b。第一保护片13a及第二保护片13b为比隔热体11大的形状，在隔热体11的整个周围第一保护片13a与第二保护片13b相接合，并且在通孔12的内侧第一保护片13a与第二保护片13b也相接合。通过如此地构成，隔热体11被第一保护片13a与第二保护片13b密封。在第一保护片13a的与隔热体11相对的面及第二保护片13b的与隔热体11相对的面上分别设置丙烯酸类的粘接层，通过这些粘接层接合保护片13彼此。需要说明的是，也可以由热塑性树脂构成第一保护片13a及第二保护片13b，并通过热熔接进行接合。
以下，将第一保护片13a以及第二保护片13b统称为保护片13。
隔热体11由于在无纺布的内部空间担载二氧化硅干凝胶，因此即使在保护片上设有粘接层，隔热体11与保护片13(第一保护片13a及第二保护片13b)也几乎无法接合。因此，成为保护片浮在隔热体的表面的状态。在隔热体的尺寸小时，不会特别成为问题，但如果该形状变大，则施加外力时的保护片的强度变弱。对此，在本实施方式中，由于在多个通孔12的内侧保护片13彼此也接合，因此即使隔热体11的形状变大，也能够防止强度的劣化。
为了在通孔12的内侧使保护片13彼此可靠地接合，优选使通孔12的大小充分大。但是，如果通孔12增大，则隔热性会劣化。因此，如图3所示，优选通孔12周边的隔热体11的厚度以朝着通孔12的中心而变薄的方式构成。如此，通过在通孔12周边的隔热体上设置锥部14，在通孔12的内侧，保护片13彼此容易接合。该锥部14可以从两面侧设置，但如图3所示，优选使一侧的锥部14更大。此时，可以例如以使下侧的第一保护片13a为PET，使上侧的第二保护片13b为聚乙烯的方式，使第一保护片13a和第二保护片13b的材料不同。由于聚乙烯的片材的延展性优于PET片材，因此通过在锥部大的一侧使用延展性优异的保护片13，能够进一步在通孔12的内侧容易地将保护板13彼此接合。
图5是本发明的一个实施方式中的层叠隔热片16的剖视图。隔热片的隔热性在材料相同时，厚度越厚则越大。因此，为了进一步提高隔热性，需要加厚。但是，在图1中，如果隔热体的厚度变厚，则会在密封性上出现问题。因此，优选将这样的隔热片15重叠多张而形成层叠隔热片16。图1的一张隔热片15中，通孔12附近的隔热性容易劣化。因此，在重叠多张的情况下，优选使相邻的隔热片15的通孔12的位置相互不同。另外，此时，也可以在成为隔热片15的外侧的面的保护片13上预先设置粘接层，通过该粘接层使隔热片15彼此贴合。或者，也可以用双面胶带将隔热片15彼此贴合。由此，隔热片15彼此不会偏移，能够防止隔热性的劣化。进而，层叠隔热片16的最外侧的隔热片15，优选以通孔12周边的隔热体11的锥部14的大的面成为内侧的方式层叠。由此，在通孔12的区域，成为在内部封入空气的状态，因此能够进一步提高隔热性。
需要说明的是，如图4所示，也可以在设置有多个通孔12的隔热片15的一个面上重叠保护片13，在另一个面上形成厚度约10μm的涂膜(在图4中未图示)，由此覆盖隔热体11整体。此时，更优选在通孔12设置锥部14，形成与保护片13相对的面的一侧与相反侧的面相比通孔12的面积变大的倒锥形。由此，能够增大保护片13与涂膜接触的面积，能够提高接合强度。
进而，如图6所示，也可以将多张图4的隔热片15重叠贴合而形成层叠隔热片16。此时，优选在通孔12的中心附近的涂膜17上设置凹部18。优选使设置有该凹部18的面彼此相对，并用双面胶带19进行贴合。通过这样，成为空气被封入凹部18的状态，因此能够进一步提高隔热性。
接着，对本发明的一个实施方式中的隔热片的制造方法进行说明。
首先，准备厚度约0.5mm的由PET形成的无纺布。
将该无纺布浸渍在例如向硅酸钠水溶液中添加盐酸而成的溶胶溶液中，使溶胶溶液含浸在无纺布的内部空间中。通过使该溶胶溶液凝胶化，疏水化，并进行干燥，在无纺布内的空间填充二氧化硅干凝胶，由此获得隔热体11。在该隔热体11的内部区域，通过模具的冲孔，以约25mm的间隔设置多个直径约2mm的通孔12。在该隔热体11的两面上重叠形状比隔热体11大的保护片13，在隔热体11的周围及通孔12的内侧使保护片13彼此接合，得到隔热片15。此时，优选在保护片13的至少一面上设置粘接层，通过该粘接层彼此将保护片13彼此接合。
在这种情况下，优选通孔12周边的隔热体11的厚度以朝着通孔12的中心而变薄的方式构成。如此，通过在通孔12周边的隔热体11上形成锥部14，在通孔12的内侧保护片13彼此容易接合。在用模具进行冲孔时，通过预先使该模具的形状成为在形成通孔的部分的周边带有锥部的形状，由此在冲切的同时也能够进行锥部14的形成，能够实现制造工序的合理化。
需要说明的是，也可以通过在无纺布的状态下使用模具进行冲孔，形成通孔12和锥部14后，在无纺布内的空间填充二氧化硅干凝胶，由此得到隔热体11。
工业上的可利用性
本发明的隔热片及使用其的层叠隔热片，能够得到即使形状变大也难以破损的隔热片，在工业上是有用的。
符号说明
11 隔热体
12 通孔
13 保护片
13a 第一保护片
13b 第二保护片
14 锥部
15 隔热片
16 层叠隔热片
17 涂膜
18 凹部
19 双面胶带

Claims (7)

1.一种隔热片，是使用无纺布和在所述无纺布的内部的空间担载有干凝胶的隔热体的隔热片，
所述隔热体在俯视时的内部区域具有多个通孔，
在所述隔热体的两面中的一个面上设有第一保护片，在另一个面上设有第二保护片，
在所述隔热体的周围及所述通孔的内侧，所述第一保护片与所述第二保护片相接合。
2.根据权利要求1所述的隔热片，其中，所述第一保护片与所述第二保护片使用不同的材料。
3.根据权利要求1所述的隔热片，其中，所述通孔周边的所述隔热体的厚度以朝着所述通孔的中心而变薄的方式构成。
4.一种隔热片，是使用无纺布和在所述无纺布的内部的空间担载有干凝胶的隔热体的隔热片，
所述隔热体在俯视时的内部区域具有多个通孔，
在所述隔热体的一个面上设有保护片，
在所述隔热体的另一个面上设有涂层，
在所述隔热体的周围及所述通孔的内侧，所述保护片与所述涂层相接合。
5.根据权利要求4所述的隔热片，其中，
所述通孔的截面具有与所述保护片相对的面比设有所述涂层的面，所述通孔的面积变大的锥形的形状，在所述通孔的中心附近的所述涂层上设有凹部。
6.一种层叠隔热片，是将权利要求1或权利要求4所述的隔热片重叠多张而成的层叠隔热片，
使相邻的所述隔热片的所述通孔的位置相互不同。
7.根据权利要求6所述的层叠隔热片，其中，所述隔热片彼此由粘接材贴合。
CN201880037339.5A 2017-06-16 2018-05-30 隔热片及使用该隔热片的层叠隔热片 Pending CN110753615A (zh)

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