{"id":1559,"date":"2026-08-18T18:56:29","date_gmt":"2026-08-18T10:56:29","guid":{"rendered":"https:\/\/www.blzn168.cn\/?p=1559"},"modified":"2026-09-15T10:35:51","modified_gmt":"2026-09-15T02:35:51","slug":"jet-vs-contact-dispensing","status":"publish","type":"post","link":"https:\/\/www.blzn168.cn\/en\/jet-vs-contact-dispensing\/","title":{"rendered":"What Is the Difference Between Jet and Contact Dispensing?"},"content":{"rendered":"<h2 class=\"wp-block-heading translation-block\">1. The Core Difference Between the Two Methods<\/h2>\n\n\n\n<p class=\"wp-block-paragraph translation-block\">There are two mainstream ways to dispense: contact and non-contact. In contact dispensing, the needle must touch the product surface to 'wipe' adhesive onto it; in jet dispensing, adhesive is 'shot' from the valve like ink-jet, never touching the product. One word of difference \u2014 completely different speed, precision and applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading translation-block\">2. Contact Dispensing: Simple, Cheap, Universal<\/h2>\n\n\n\n<p class=\"wp-block-paragraph translation-block\">Contact dispensing extrudes adhesive from the needle by air pressure or mechanical action, transferring it by touching the surface. Its strengths: simple structure, low cost, works with virtually every adhesive, easy setup and programming, and dots rarely splatter. Weaknesses: every dot requires a Z-axis up-down move, so it is slow \u2014 at most about 300 dots per minute, roughly 80 per second at best; needles wear, may scratch surfaces, and dot consistency suffers from pressure fluctuation.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064326-794.jpg\" alt=\"\u6c14\u538b\u9a71\u52a8\uff0c\u63a5\u89e6\u5f0f\u70b9\u80f6\uff0c\u7ed3\u6784\u7b80\u5355\u3001\u6210\u672c\u4f4e\uff0c\u51e0\u4e4e\u80fd\u9002\u914d\u6240\u6709\u7c7b\u578b\u7684\u80f6\u6c34\" class=\"wp-image-1562\" srcset=\"https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064326-794.jpg 600w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064326-794-300x300.jpg 300w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064326-794-150x150.jpg 150w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064326-794-12x12.jpg 12w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading translation-block\">3. Jet Dispensing: Fast, Precise, Non-Contact<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Jet dispensing uses a high-speed jet valve to fire adhesive at very high frequency onto the target without touching it. It is extremely fast \u2014 continuous jetting up to 1000 dots per second, 1500Hz burst, an order of magnitude beyond contact; because nothing touches the product, fragile components are never damaged and stringing disappears; dot tolerance is within \u00b11% and minimum dot size reaches 5 nanoliters. Drawbacks: higher equipment cost, poorer tolerance for particle-laden or abrasive adhesives, and thick layers need multiple passes. Learn more<a href=\"https:\/\/www.blzn168.cn\/en\/glue-volume-control\/\" title=\"Vision positioning system: place workpieces freely \u2014 the machine photographs and recognizes the LOGO groove contour and auto-corrects; slight tilting never misses the mark; quick changeover across models\">Vision positioning system: place workpieces freely \u2014 the machine photographs and recognizes the LOGO groove contour and auto-corrects; slight tilting never misses the mark; quick changeover across models<\/a>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064339-499.jpg\" alt=\"\u55b7\u5c04\u5f0f\u70b9\u80f6\uff0c\u538b\u7535\u55b7\u5c04\u9600\uff0c\u8bbe\u5907\u6210\u672c\u8f83\u9ad8\uff0c\u5bf9\u542b\u9897\u7c92\u6216\u9ad8\u78e8\u8680\u6027\u80f6\u6c34\u9002\u5e94\u6027\u5dee\" class=\"wp-image-1563\" srcset=\"https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064339-499.jpg 600w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064339-499-300x300.jpg 300w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064339-499-150x150.jpg 150w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-064339-499-12x12.jpg 12w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading translation-block\">4. How to Choose? Four Factors<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"translation-block\">Takt time: for large batches and high takt, jet first; for small batches with modest speed needs, contact is more economical.<\/li>\n\n\n\n<li class=\"translation-block\">Product fragility: fragile, uneven or complex surfaces favor jet to avoid damage.<\/li>\n\n\n\n<li class=\"translation-block\">Adhesive type: particle-filled or abrasive adhesives are safer with contact; ordinary adhesives work either way.<\/li>\n\n\n\n<li class=\"translation-block\">Budget: contact valves run about 2,000-5,000 RMB each; jet valves 20,000-50,000 RMB \u2014 a clear gap; choose per need.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In short:<strong>choose jet for high precision, high speed and fragile parts; choose contact for low cost, general use and thick layers<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading translation-block\">5. Boli's Dispensing Method<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Boli vision dispensing machines use air-driven non-contact dispensing \u2014 the needle never touches the product; air pressure deposits adhesive at the target, with fast drip-free start\/stop and working pressure of 600-1200hpa. This non-contact approach shares the jet philosophy of 'never touching the product', avoiding damage and stringing, while costing far less than a piezo jet valve \u2014 ideal for mid-takt precision dispensing in 3C electronics and precision hardware. Learn more<a href=\"https:\/\/www.blzn168.cn\/en\/boli-visual-dispensing-machine-core-technologies\/\" title=\"Core Technologies\">Core Technologies<\/a>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-065851-448.jpg\" alt=\"\" class=\"wp-image-1568\" srcset=\"https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-065851-448.jpg 800w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-065851-448-300x225.jpg 300w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-065851-448-768x576.jpg 768w, https:\/\/www.blzn168.cn\/wp-content\/uploads\/2026\/08\/pasted-image-20260819-065851-448-16x12.jpg 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading translation-block\">6. Summary<\/h2>\n\n\n\n<p class=\"wp-block-paragraph translation-block\">Contact wiping is slow but cheap and universal; jetting is fast but expensive. Judge by takt, product, adhesive and budget, and you will pick the right method.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4e24\u79cd\u70b9\u80f6\u65b9\u5f0f\u7684\u6838\u5fc3\u5dee\u5f02 \u70b9\u80f6\u673a\u51fa\u80f6\u6709\u4e24\u79cd\u4e3b\u6d41\u65b9\u5f0f\uff1a\u63a5\u89e6\u5f0f\u548c\u975e\u63a5\u89e6\u5f0f\u3002\u63a5\u89e6\u5f0f\u70b9\u80f6\uff0c\u9488\u5934\u8981\u78b0\u5230\u4ea7\u54c1\u8868\u9762\u624d\u80fd\u628a\u80f6 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