{"id":170,"date":"2026-07-31T20:34:06","date_gmt":"2026-07-31T12:34:06","guid":{"rendered":"http:\/\/www.mightybookjr.com\/blog\/?p=170"},"modified":"2026-07-31T20:34:06","modified_gmt":"2026-07-31T12:34:06","slug":"what-are-the-common-problems-of-a-milk-tea-cup-bag-making-machine-and-how-to-solve-them-4975-e32ea8","status":"publish","type":"post","link":"http:\/\/www.mightybookjr.com\/blog\/2026\/07\/31\/what-are-the-common-problems-of-a-milk-tea-cup-bag-making-machine-and-how-to-solve-them-4975-e32ea8\/","title":{"rendered":"What are the common problems of a milk tea cup bag making machine and how to solve them?"},"content":{"rendered":"<p>As a supplier of milk tea cup bag making machines, I&#8217;ve encountered a wide array of issues that operators face during the machine&#8217;s operation. Over the years, I&#8217;ve delved deep into understanding these problems and finding effective solutions. In this blog, I&#8217;ll share some of the most common problems along with their corresponding remedies. <a href=\"https:\/\/www.xinjiamachinery.com\/milk-tea-cup-bag-making-machine\/\">Milk Tea Cup Bag Making Machine<\/a><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.xinjiamachinery.com\/uploads\/47047\/small\/automatic-rubber-strapping-t-shirt-poly-baga0eb1.jpg\"><\/p>\n<h3>1. Bag Seal Quality Issues<\/h3>\n<h4>Problem 1: Incomplete Sealing<\/h4>\n<p>Incomplete sealing is a frequent headache. You might notice that the edges of the milk tea cup bags aren&#8217;t properly sealed, which can lead to product leakage. This issue can be caused by multiple factors. Firstly, the sealing temperature might be too low. If the heat is insufficient, the plastic film used for the bags won&#8217;t melt and bond effectively. Secondly, the pressure applied during the sealing process may be uneven or too light. Another possible reason is dirty or worn &#8211; out sealing bars.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Temperature Adjustment<\/strong>: Check the temperature setting of the sealing unit. Refer to the machine&#8217;s manual to determine the optimal temperature for the specific type of plastic film you&#8217;re using. For common polyethylene films, the sealing temperature usually ranges from 120 &#8211; 180 degrees Celsius. You can gradually increase the temperature in small increments and test the sealing quality until you achieve a complete seal.<\/li>\n<li><strong>Pressure Check and Adjustment<\/strong>: Inspect the pressure mechanism of the sealing bars. Make sure that the pressure is evenly distributed across the entire sealing area. You can use a pressure gauge to measure the pressure. If the pressure is too low, adjust the pressure regulator according to the machine&#8217;s specifications.<\/li>\n<li><strong>Sealing Bar Maintenance<\/strong>: Clean the sealing bars regularly to remove any debris or residue that might accumulate over time. If the bars are worn out, replace them promptly. You can usually find replacement parts provided by the machine&#8217;s manufacturer.<\/li>\n<\/ul>\n<h4>Problem 2: Over &#8211; Sealing<\/h4>\n<p>Over &#8211; sealing occurs when the plastic film is melted too much, resulting in a brittle seal. This can cause the bags to tear easily at the seal during handling or transportation. The main cause of over &#8211; sealing is excessive sealing temperature or a too &#8211; long sealing time.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Temperature and Time Adjustment<\/strong>: Lower the sealing temperature gradually. At the same time, reduce the sealing time. You can conduct a series of tests by adjusting these two parameters in small steps until the seal is strong enough but not overly brittle. Keep a record of the optimal settings for future reference.<\/li>\n<\/ul>\n<h3>2. Bag Cutting Problems<\/h3>\n<h4>Problem 1: Uneven Cuts<\/h4>\n<p>Uneven cuts can make the milk tea cup bags look unprofessional and may also affect their functionality. One reason for uneven cuts is a dull cutting blade. As the blade becomes worn, it won&#8217;t be able to cut through the plastic film cleanly. Another factor could be that the blade alignment is off, causing it to cut at an angle.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Blade Replacement<\/strong>: Regularly inspect the cutting blade for signs of wear. If it&#8217;s dull, replace it with a new one. Make sure to use high &#8211; quality blades that are compatible with your machine. You can purchase replacement blades from reliable suppliers or directly from the machine manufacturer.<\/li>\n<li><strong>Blade Alignment<\/strong>: Check the alignment of the cutting blade. You can use a ruler or a straightedge to ensure that the blade is parallel to the path of the plastic film. If it&#8217;s misaligned, consult the machine&#8217;s manual for instructions on how to adjust the blade alignment. In some cases, you may need to use specialized tools to make the adjustment accurately.<\/li>\n<\/ul>\n<h4>Problem 2: Incomplete Cuts<\/h4>\n<p>Incomplete cuts mean that the plastic film isn&#8217;t fully severed, resulting in a connected strip of bags. This can be due to insufficient cutting pressure, a dull blade, or problems with the cutting drive system.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Pressure Adjustment<\/strong>: Increase the cutting pressure if possible. Refer to the machine&#8217;s manual to find out how to adjust the cutting pressure. Some machines have a pressure adjustment knob or a hydraulic control system for this purpose.<\/li>\n<li><strong>Blade Inspection and Replacement<\/strong>: Just like in the case of uneven cuts, check the blade and replace it if it&#8217;s dull. A sharp blade is essential for clean and complete cuts.<\/li>\n<li><strong>Drive System Check<\/strong>: Inspect the cutting drive system for any mechanical malfunctions. Make sure that the gears, belts, or motors driving the cutting mechanism are working properly. If there are any signs of damage or wear, repair or replace the faulty components.<\/li>\n<\/ul>\n<h3>3. Film Feeding Issues<\/h3>\n<h4>Problem 1: Film Jamming<\/h4>\n<p>Film jamming is a major disruption to the bag &#8211; making process. It can be caused by several factors. One common cause is the presence of debris or foreign objects in the film feeding path. Another reason could be incorrect film tension. If the tension is too high, the film may break or jam; if it&#8217;s too low, the film may wrinkle or not feed smoothly.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Path Cleaning<\/strong>: Stop the machine immediately when a jam occurs. Carefully remove any debris or foreign objects from the film feeding path. Use compressed air or a soft brush to clean hard &#8211; to &#8211; reach areas. Regularly clean the path as part of the machine&#8217;s maintenance routine to prevent future jams.<\/li>\n<li><strong>Tension Adjustment<\/strong>: Check the film tension control system. Most machines have a tension adjustment mechanism, such as a tension controller or a set of adjustable rollers. Adjust the tension according to the specifications of the plastic film. You can also test the film tension by pulling a short length of film through the machine and observing its behavior.<\/li>\n<\/ul>\n<h4>Problem 2: Film Misalignment<\/h4>\n<p>Film misalignment means that the plastic film isn&#8217;t feeding straight through the machine, which can lead to problems with sealing and cutting. This can be caused by improper roller alignment or a misaligned film roll holder.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Roller Alignment<\/strong>: Inspect the alignment of the rollers in the film feeding system. Adjust the rollers so that they are parallel to each other and to the path of the film. You may need to use a straightedge or a laser alignment tool to ensure accurate alignment.<\/li>\n<li><strong>Roll Holder Adjustment<\/strong>: Check the film roll holder to make sure that it&#8217;s properly centered and secured. If the roll is off &#8211; center, it can cause the film to feed at an angle. Adjust the roll holder to align the film roll correctly.<\/li>\n<\/ul>\n<h3>4. Control System Issues<\/h3>\n<h4>Problem 1: Sensor Malfunctions<\/h4>\n<p>Sensors play a crucial role in the operation of milk tea cup bag making machines. They are used to detect the position of the film, control the sealing and cutting operations, and ensure the overall safety of the machine. When sensors malfunction, it can lead to various problems. For example, if the film position sensor fails, the machine may cut or seal the bags in the wrong place.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Sensor Cleaning<\/strong>: Dirt and dust can accumulate on the sensors over time, causing them to malfunction. Clean the sensors regularly using a soft, dry cloth. Make sure not to damage the sensors during the cleaning process.<\/li>\n<li><strong>Sensor Calibration<\/strong>: If cleaning doesn&#8217;t solve the problem, you may need to calibrate the sensors. Refer to the machine&#8217;s manual for the calibration procedure. In some cases, you may need to use a calibration tool provided by the manufacturer.<\/li>\n<li><strong>Sensor Replacement<\/strong>: If the sensors are damaged beyond repair, replace them with new ones. Make sure to use sensors that are compatible with your machine.<\/li>\n<\/ul>\n<h4>Problem 2: Electrical Faults<\/h4>\n<p>Electrical faults can cause the machine to stop working or operate erratically. These faults can be due to loose connections, faulty wiring, or problems with the control panel.<\/p>\n<h5>Solution<\/h5>\n<ul>\n<li><strong>Connection Check<\/strong>: Inspect all the electrical connections in the machine. Make sure that the wires are properly plugged in and secured. Tighten any loose connections.<\/li>\n<li><strong>Wiring Inspection<\/strong>: Look for any signs of damaged wiring, such as frayed or broken wires. If you find any damaged wiring, replace it immediately. You should follow proper electrical safety procedures when working with wiring.<\/li>\n<li><strong>Control Panel Maintenance<\/strong>: If the control panel is malfunctioning, check its display and buttons for any signs of damage. You may need to reset the control panel or update its software if possible. If the problem persists, contact a professional electrician or the machine manufacturer&#8217;s technical support team.<\/li>\n<\/ul>\n<p>In conclusion, while milk tea cup bag making machines can encounter various problems during operation, most of these issues can be resolved through proper maintenance, timely adjustments, and the replacement of worn &#8211; out parts. By understanding these common problems and their solutions, operators can ensure the smooth and efficient operation of the machines.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.xinjiamachinery.com\/uploads\/47047\/small\/t-shirt-plastic-bag-making-machine27260.jpg\"><\/p>\n<p>If you&#8217;re facing any problems with your milk tea cup bag making machine or are considering purchasing a new one, don&#8217;t hesitate to contact us. Our team of experts is ready to provide you with professional advice and support. We can offer customized solutions based on your specific needs. Let&#8217;s work together to improve your bag &#8211; making process and enhance your production efficiency.<\/p>\n<p><a href=\"https:\/\/www.xinjiamachinery.com\/biodegradable-bag-making-machine\/biodegradable-t-shirt-bag-making-machine\/\">Biodegradable T-shirt Bag Making Machine<\/a> References<\/p>\n<ul>\n<li>Machine user manuals for various milk tea cup bag making machines<\/li>\n<li>Technical reports on plastic film processing and bag &#8211; making technology<\/li>\n<li>Industry &#8211; specific journals and publications related to packaging machinery<\/li>\n<\/ul>\n<hr>\n<p><a href=\"https:\/\/www.xinjiamachinery.com\/\">Ruian Xinjia Machinery Co., Ltd.<\/a><br \/>As one of the leading manufacturers and suppliers of milk tea cup bag making machine in China, we&#8217;re featured by quality products and good price. Please rest assured to buy cheap milk tea cup bag making machine from our factory. If you have any enquiry about cooperation, please feel free to email us.<br \/>Address: No. 23 Shazhou Road, Shazhouyang Industrial Zone , Mayu Town ,Ruian City ,Zhejiang Province ,325208 China<br \/>E-mail: sales@xinjiajixie.com<br \/>WebSite: <a href=\"https:\/\/www.xinjiamachinery.com\/\">https:\/\/www.xinjiamachinery.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As a supplier of milk tea cup bag making machines, I&#8217;ve encountered a wide array of &hellip; <a title=\"What are the common problems of a milk tea cup bag making machine and how to solve them?\" class=\"hm-read-more\" href=\"http:\/\/www.mightybookjr.com\/blog\/2026\/07\/31\/what-are-the-common-problems-of-a-milk-tea-cup-bag-making-machine-and-how-to-solve-them-4975-e32ea8\/\"><span class=\"screen-reader-text\">What are the common problems of a milk tea cup bag making machine and how to solve them?<\/span>Read more<\/a><\/p>\n","protected":false},"author":110,"featured_media":170,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[133],"class_list":["post-170","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-milk-tea-cup-bag-making-machine-49d0-e3e32c"],"_links":{"self":[{"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/posts\/170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/users\/110"}],"replies":[{"embeddable":true,"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/comments?post=170"}],"version-history":[{"count":0,"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/posts\/170\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/posts\/170"}],"wp:attachment":[{"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/media?parent=170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/categories?post=170"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.mightybookjr.com\/blog\/wp-json\/wp\/v2\/tags?post=170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}