{"id":1436,"date":"2025-08-20T17:55:33","date_gmt":"2025-08-20T15:55:33","guid":{"rendered":"https:\/\/hoenle.cn\/?page_id=1436"},"modified":"2026-01-27T14:11:11","modified_gmt":"2026-01-27T13:11:11","slug":"needle-bonding","status":"publish","type":"page","link":"https:\/\/hoenle.cn\/en\/products-solutions\/applications\/bonding-potting\/medical-grade-adhesive\/needle-bonding\/","title":{"rendered":"Needle Bonding"},"content":{"rendered":"

[vc_section][vc_row][vc_column width=”1\/2″]\n

\n Needle<\/span>\n Bonding<\/span>\n <\/h1>[vc_column_text css=””]A main field of application for adhesives in medical systems is needle bonding and syringe assembly \u2013 the bonding of stainless steel needles or cannulas into glass or plastic syringes. The needles’ required high withdrawal forces are achieved through precision manufacture (needle position, adhesive dosing and reliable adhesive curing), choice of hub (material and design) and, in particular, the right adhesive system.[\/vc_column_text]\n
\n \n Request consultation<\/span>\n <\/a>\n <\/div>[\/vc_column][vc_column width=”1\/2″][vc_single_image image=”2952″ img_size=”full” css=””][\/vc_column][\/vc_row][\/vc_section][vc_section css=”.vc_custom_1759753044538{background-color: #FFFFFF !important;}”][vc_row][vc_column width=”1\/2″][vc_video link=”https:\/\/www.youtube.com\/watch?v=k-Uqo6CiXJM” css=””][vc_empty_space][vc_column_text css=””]Downloads<\/strong><\/p>\n

Medical Grade Adhesives brochure<\/a>[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_column_text css=””]Already the hub material used affects the choice of adhesive, since not all adhesives adhere well to all plastics. Many adhesives are UV-curing, which requires the use of transparent and UV-permeable materials. For materials that block UV light, such as polycarbonates, long-wave LED curing is recommended. All needle bonding adhesives listed in the table below can be LED-cured.[\/vc_column_text][vc_column_text css=””]The hub design also plays an important role for the assembly of syringes: it determines whether a mobile adhesive that flows into the needle hub through capillary action or a highly viscous adhesive capable of filling large gaps is used. In some cases the needle shaft must be designed with grooves to provide an additional key for the adhesive.[\/vc_column_text][vc_column_text css=””]Hoenle offers various adhesives that are suitable for bonding stainless steel needles into glass syringes and stainless steel cannulas into syringes made from plastics such as PC, PVC, PP or ABS. All adhesives recommended for needle bonding are solvent-free and certified USP Class IV and\/or ISO 10993 for use in medical equipment. In addition, high needle extraction forces were measured with all needle bonding adhesives even after several sterilization cycles. Electron-beam sterilization has even been shown to improve the adhesion of some adhesives of the Vitralit\u00ae series.[\/vc_column_text][vc_column_text css=””]All adhesives are also available in fluorescent versions, which allows a fast and efficient quality control during production.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=””]The table below lists a selection of needle bonding adhesives from Hoenle. Further products and custom solutions for needle assembly are available on request. To download the technical datasheets (TDS) please click on the adhesive name.[\/vc_column_text]\n

\n \n \n \n \n
\n
\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n \n \n Adhesive <\/span>\n \n <\/th>\n \n \n \n Application Areas <\/span>\n \n <\/th>\n \n \n \n Viscosity [mPas] <\/span>\n \n <\/th>\n \n \n \n Base <\/span>\n \n <\/th>\n \n \n \n Curing <\/span>\n \n <\/th>\n \n \n \n Special Properties <\/span>\n \n <\/th>\n <\/tr>\n <\/thead>\n \n \n
\n
\n \n Vitralit\u00ae 6108<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • needle bonding<\/li>\n
  • bonding glass apparatus<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 600-900 <\/span>\n <\/td>\n \n \n acrylate <\/span>\n <\/td>\n \n \n UV\r\nVIS\r\nsecondary heat cure <\/span>\n <\/td>\n \n \n
    \n
  • \n non-yellowing <\/li>\n
  • \n excellent flow properties <\/li>\n
  • \n certified to USP Class VI and ISO 10933-5 standards <\/li>\n <\/ul>\n <\/span>\n <\/td>\n <\/tr>\n
\n
\n \n Vitralit\u00ae 6108 T<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • needle bonding<\/li>\n
  • bonding glass apparatus<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 3,000-6,000 <\/span>\n <\/td>\n \n \n acrylate <\/span>\n <\/td>\n \n \n UV\r\nVIS\r\nsecondary heat cure <\/span>\n <\/td>\n \n \n
    \n
  • \n non-yellowing <\/li>\n
  • \n excellent gap-filling <\/li>\n
  • \n certified to USP Class VI standards <\/li>\n
  • \n shear thinning <\/li>\n <\/ul>\n <\/span>\n <\/td>\n <\/tr>\n
\n
\n \n Vitralit\u00ae 7041<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • Needle bonding,<\/li>\n
  • bonding enclosures<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 50-90 (LVT 25\u00b0C, Sp. 2\/60 rpm) <\/span>\n <\/td>\n \n \n acrylate <\/span>\n <\/td>\n \n \n UV\r\nVIS <\/span>\n <\/td>\n \n \n
    \n
  • \n Excellent adhesion to glass, plastics and metals; <\/li>\n
  • \n biocompatible: certified to USP Class VI standards <\/li>\n <\/ul>\n <\/span>\n <\/td>\n <\/tr>\n
\n
\n \n Vitralit\u00ae 7041 T<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • Needle bonding,<\/li>\n
  • bonding dialysis filters<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 1,500-2,300 <\/span>\n <\/td>\n \n \n acrylate <\/span>\n <\/td>\n \n \n UV\r\nVIS <\/span>\n <\/td>\n \n \n
    \n
  • \n High viscosity\/stable, <\/li>\n
  • \n excellent adhesion to glass, plastics and metals; <\/li>\n
  • \n biocompatible: certified to USP Class VI and ISO 10993\/-4\/-5 standards <\/li>\n <\/ul>\n <\/span>\n <\/td>\n <\/tr>\n
\n
\n \n Vitralit\u00ae 7311 FO<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • Plastic bonding, glass bonding<\/li>\n
  • Suitable for large area bonding<\/li>\n
  • Suitable for applications with small gaps<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 40-70 (Newtonian liquid, Rheometer, 25 \u00b0C) <\/span>\n <\/td>\n \n \n acrylate <\/span>\n <\/td>\n \n \n UV\r\nVIS <\/span>\n <\/td>\n \n \n
    \n
  • \n Fluorescing orange <\/li>\n
  • \n Capillary flowing <\/li>\n
  • \n Resistant to moisture and alcohol <\/li>\n
  • \n Biocompatible, certified according to USP Class VI and ISO 10993-5\/10 <\/li>\n
  • \n Resistant to sterilization <\/li>\n <\/ul>\n <\/span>\n <\/td>\n <\/tr>\n
\n
\n \n Vitralit\u00ae UV 4050<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • needle bonding<\/li>\n
  • plastic bonding<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 140-500 (LVT, 25\u00b0C, Sp. 2\/30 rpm) <\/span>\n <\/td>\n \n \n acrylate <\/span>\n <\/td>\n \n \n UV\r\nVIS <\/span>\n <\/td>\n \n \n
    \n
  • \n Certified to ISO 10993-5 and USP Class VI standards <\/li>\n
  • \n modified acrylate <\/li>\n
  • \n impact resistant <\/li>\n
  • \n very fast curing <\/li>\n
  • \n very high adhesion to plastics <\/li>\n <\/ul>\n <\/span>\n <\/td>\n <\/tr>\n
\n
\n \n Structalit\u00ae 5893<\/strong>\n \n <\/a>\n <\/div>\n <\/td>\n
\n \n
    \n
  • needle bonding<\/li>\n
  • plastic bonding<\/li>\n <\/ul>\n <\/span>\n <\/td>\n
\n \n 6,000-10,000 (Rheometer, 25\u00b0C, 10s^-1) <\/span>\n <\/td>\n \n \n epoxy <\/span>\n <\/td>\n \n \n thermal <\/span>\n <\/td>\n \n \n