The National Archives & Records Administration (NARA) has been making heat-set mending tissue in house for many years.\u00a0 Recent digitization initiatives have increased the need for efficient stabilization mending.\u00a0 NARA prefers heat-set tissue for this type of mending for many reasons.\u00a0 The tissue is flexible and easily reversible.\u00a0 It requires no moisture for application and is easy to use.\u00a0 The transparency of the tissue, which they can control by making the tissue in house, does not interfere with the digitization of text. To make the heat-set tissue, NARA starts with an appropriate weight of Japanese tissue, which is toned (if necessary) before application of the adhesive.\u00a0 The tissue is wetted and smoothed out against silicone Mylar to remove bubbles.\u00a0 A batch of the acrylic emulsion polymers Rhoplex AC 234 + AC 73 were mixed and applied through a screen onto the wet tissue.\u00a0 The tissue was then allowed to dry on the Mylar until ready for use. Unfortunately, the Rhoplex adhesives they had been using for many years have been discontinued, and they had to search out a new blend of adhesives to continue making the tissue.\u00a0 NARA tried two different blends of adhesives:\u00a0 Avanse MV-100 + Plextol B500 and Avanse MV-100 + Rhoplex M200.\u00a0 NARA settled on a 4 : 1 : 1 ratio of water : Avanse MV-100 : Plextol B500 for their new mix. PROS:<\/p>\n
CONS:<\/p>\n
The National Archives & Records Administration (NARA) has been making heat-set mending tissue in house for many years.\u00a0 Recent digitization initiatives have increased the need for efficient stabilization mending.\u00a0 NARA prefers heat-set tissue for this type of mending for many reasons.\u00a0 The tissue is flexible and easily reversible.\u00a0 It requires no moisture for application and … Continue reading “43rd Annual Meeting \u2013 Book & Paper Session, May 15, "Heat-Set Tissue: Finding a Practical Solution of Adhesives by Lauren Varga and Jennifer K. Herrmann"”<\/span><\/a><\/p>\n","protected":false},"author":82,"featured_media":12312,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"footnotes":""},"categories":[2,23,16],"tags":[75,184],"class_list":["post-12548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-annual-meeting","category-book-and-paper","category-specialty-sessions","tag-aics-43rd-annual-meeting","tag-book-paper-specialty-group"],"_links":{"self":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/posts\/12548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/comments?post=12548"}],"version-history":[{"count":0,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/posts\/12548\/revisions"}],"wp:attachment":[{"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/media?parent=12548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/categories?post=12548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.culturalheritage.org\/conservators-converse\/wp-json\/wp\/v2\/tags?post=12548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}