{"id":8791,"date":"2021-02-03T22:25:23","date_gmt":"2021-02-03T22:25:23","guid":{"rendered":"https:\/\/resin-expert.com\/?p=8791"},"modified":"2023-04-07T18:59:25","modified_gmt":"2023-04-07T18:59:25","slug":"best-glue-for-polypropylene","status":"publish","type":"post","link":"https:\/\/resin-expert.com\/en\/guide\/best-glue-for-polypropylene","title":{"rendered":"Best Glue for Polypropylene &#8211; A Guide to the Best Glue for Plastics"},"content":{"rendered":"<p><strong>There are materials that are quick and easy to glue. And then there is polypropylene (PP). The question quickly arises for the user: What can PP be bonded with? What exactly makes it so difficult to join PP plastic in a really durable and stable way? Which PP adhesive should you use for this purpose? We will reveal the answers to these questions and more in this polypropylene adhesive guide.<\/strong><\/p>\n<p>&nbsp;<\/p>\n\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>What Is Polypropylene?<\/h2>\n<p>Polypropylene, in short PP, was synthesized by Karl Rehn in the fifties of the 20th century. At the same time, Giulio Natta also discovered the advantages of this material. PP has been produced industrially in larger batches since 1957.<\/p>\n<p>It is a thermoplastic material belonging to the groups of polyolefins. This means that PP plastic can be formed at higher temperatures. At room temperature or generally low temperatures, PP has material properties that are highly useful for many users:<\/p>\n<div class=\"sue-shadow-wrap su-u-trim sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-simple\"><div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;box-shadow:0px 1px 2px #eeeeee;border:1px solid #cccccc\"><div class=\"sue-panel-content su-u-trim\" style=\"padding:15px;text-align:left\">\n<div class=\"su-list\" style=\"margin-left:5px\">\n<ul>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>High chemical resistance<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>High surface hardness<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>High strength and stiffness<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Lower environmental impact compared to other plastics<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Good recyclability<\/strong><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div>\n<p>In addition, it is weldable, odorless, and well-tolerated by the skin, making it ideal for a wide range of applications. PP plastic is also very popular in industrial settings.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9227\" src=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene.jpg\" alt=\"Gluing Polypropylene\" width=\"848\" height=\"566\" srcset=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene.jpg 848w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-300x200.jpg 300w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-768x513.jpg 768w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-30x20.jpg 30w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-75x50.jpg 75w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-110x73.jpg 110w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-160x107.jpg 160w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-500x334.jpg 500w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-150x100.jpg 150w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-360x240.jpg 360w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-262x175.jpg 262w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-162x108.jpg 162w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-100x67.jpg 100w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Gluing-Polypropylene-610x407.jpg 610w\" sizes=\"(max-width: 848px) 100vw, 848px\" \/><\/p>\n<p>This thermoplastic can be processed by various methods, including deep drawing, extrusion, welding, blow molding, injection molding, and hot forming. PP is also very well suited for machining and foam production.<\/p>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>Various mineral fillers such as glass fibers, chalk, or talc can be added to the PP for greater stability, resulting in a wide range of applications for this thermoplastic material.<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<h3>Where Is PP Used?<\/h3>\n<p>The positive material properties of polypropylene are so diverse that this material enjoys great popularity not only in industrial processing, but also among home users. Among other things, it is used: <div class=\"su-list\" style=\"margin-left:0px\">\n<ul>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> In vehicle, machine and aircraft construction<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> In civil engineering<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> In electrical engineering<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> In the consumer industry<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> In the pharmaceutical industry<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> In the food industry<\/li>\n<\/ul>\n<p>The range of applications is very broad. Among other things, PP is used to produce:<\/p>\n<ul>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Interior linings for various household appliances<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Cable and wire sheathing<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Transformer housings<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Sheet goods and injection molded parts<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Yogurt and disposable cups<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Shoe heels<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Closures for bottles<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> Interior linings for passenger cars and crash absorber elements<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Why Is Polypropylene Gluing So Difficult?<\/h2>\n<p>Polypropylene bonding is a very complicated process. Although plastics offer the user many advantages, a serious disadvantage is their extremely low density and thus very low surface tension, especially in comparison with metals. In addition, the wetting behavior is completely different.<\/p>\n<p>Due to the low surface energy and the poor wettability, it is hardly possible to bond polypropylene. The latter, in fact, ensures that liquids, even those with high viscosity, simply flow off instead of remaining in place. This applies not only to water, but also to adhesives and paints. This can be compared to the lotus effect. Therefore, both the selection of the right PP adhesive and optimum surface pre-treatment are of essential importance.<\/p>\n<p>Incidentally, the surface tension of a material can be determined with the aid of the water drop test. Water, or alternatively ink, is applied to the surface. If the liquid contracts instead of wetting the surface completely, then this is a low-energy outer surface.<\/p>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>But what can you use to bond PP? We present a selection of adhesives with which you can bond not only PP, but also polyethylene(PE), whose adhesive properties are generally comparable.<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Gluing Polypropylene With a Two-Component Adhesive<\/h2>\n<p>Two-component adhesives are also known as reactive adhesives. They are based on epoxy resin, polyurethane or methyl methacrylate. The special feature is the two components of this system. In the case of<strong> <a href=\"https:\/\/resin-expert.com\/en\/guide\/best-epoxy-glue\" target=\"_blank\" rel=\"noopener\" data-wpil=\"url\">epoxy resin adhesives<\/a><\/strong>, these are the epoxy resin and a hardener.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9229\" src=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing.jpg\" alt=\"Polypropylene Gluing\" width=\"848\" height=\"565\" srcset=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing.jpg 848w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-300x200.jpg 300w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-768x512.jpg 768w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-30x20.jpg 30w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-75x50.jpg 75w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-110x73.jpg 110w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-160x107.jpg 160w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-500x333.jpg 500w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-150x100.jpg 150w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-360x240.jpg 360w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-262x175.jpg 262w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-162x108.jpg 162w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-100x67.jpg 100w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Gluing-610x406.jpg 610w\" sizes=\"(max-width: 848px) 100vw, 848px\" \/><\/p>\n<p>Both components are added together in a specific mixing ratio and enter into a chemical reaction with each other. The optimum mixing ratio is of essential importance here, because if this is not correct, insufficient curing takes place &#8211; the adhesive seam can peel off again.<\/p>\n<p>As a rule, two-component <strong><a href=\"https:\/\/resin-expert.com\/en\/guide\/best-epoxy-glue\" target=\"_blank\" rel=\"noopener\" data-wpil=\"url\">epoxy resin adhesives<\/a><\/strong> are solvent-free.\u00a0Especially for bonding larger surfaces, the epoxy adhesive is the method of choice. A primer can be applied beforehand, but it does not have to be.<\/p>\n<\/div>\n<p><strong>Advantages:<\/strong><\/p>\n<p>Two-component epoxy resin adhesives have many advantages:<\/p>\n<div class=\"sue-shadow-wrap su-u-trim sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-simple\"><div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;box-shadow:0px 1px 2px #eeeeee;border:1px solid #cccccc\"><div class=\"sue-panel-content su-u-trim\" style=\"padding:15px;text-align:left\">\n<div class=\"su-list\" style=\"margin-left:5px\">\n<ul>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Short processing time<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Fast curing phase (solid hand strength occurs after a few minutes)<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Can bond to many different materials to and among each other<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Optimal impact and shear strength<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Viscoplastic adhesive means it is suitable for flexible joints<\/strong><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div>\n<p>&nbsp;<\/p>\n<h3>Recommendation: J-B WELD Plastic Bonder Structural Adhesive Syringe<\/h3>\n<p>This two-part urethane-based adhesive works as both a binder and gap filler, leaving behind a strong and lasting bond to a multitude of surfaces, including plastic. The syringe format allows for a simple 1:1 mixing ratio and comes with a re-sealable lid that stops the product from drying or leaking out, thus allowing for several uses.<\/p>\n<p>To use this product, simply mix the two components together thoroughly on the provided mixing tray with a stick. You will have 15 minutes to work with the epoxy liquid before it begins to set, after which time it will require 30 hours to cure properly. The final finish boasts a tough, permanent tan-colored bond that will last indefinitely.<\/p>\n<style type=\"text\/css\">.asa2_horizontal_box {background-color:#ffffff !important;border:1px solid #c9c9c9; padding:10px 10px 18px 10px; margin-bottom:15px;-moz-border-radius:px;border-radius:px;float:none;clear:both;}.asa2_horizontal_box img {border:0;}.asa2_horizontal_box .asa2_product_col_1 img {margin:0; padding:0;max-width:200px;max-height:200px;width:auto;}.asa2_horizontal_box .asa2_title {margin:0 0 10px 0 !important;font-size:110%; font-weight:bold;}.asa2_horizontal_box .asa2_title a {color:#007aff;}.asa2_horizontal_box .asa2_title a, .asa2_horizontal_box .asa2_title a:visited, .asa2_horizontal_box .asa2_title a:hover {color:#007aff}.asa2_horizontal_box .asa2_product_col_1 {float:left; margin-right:10px; border:0;text-align:center;width:200px;}.asa2_horizontal_box .asa2_product_col_2 {float:none;width:auto;overflow:hidden;}.asa2_horizontal_box p {padding-bottom:5px; margin-bottom:0;}.asa2_horizontal_box div.asa2_reviews, .asa2_horizontal_box div.asa2_offers {font-size:0.8em;}.asa2_horizontal_box div.asa2_reviews img {vertical-align:text-bottom;}.asa2_horizontal_box div.price span, .asa2_horizontal_box div.price_save span {color:#000000; font-weight:bold;}.asa2_horizontal_box div.price_save {font-size:80%;}.asa2_horizontal_box div.asa2_as_of {font-size:80% !important;display:inline;}.asa2_horizontal_box div.price img {vertical-align:middle;margin-left:4px;}.asa2_horizontal_box span.asa2_offers_new {margin-right:20px;}.asa2_horizontal_box .description {margin:10px 0;font-size:80%;}.asa2_horizontal_box .disclaimer {font-size:80%;margin-bottom:10px;}.asa2_horizontal_box .features {margin-top:10px;font-size:80%;}.asa2_horizontal_box .features ul {list-style-position:inside;}.asa2_horizontal_box .asa2_product_gallery {margin-top:10px;}.asa2_horizontal_box .owl-carousel .owl-item img {width:auto !important;}.asa2_horizontal_box .fullwidth_col {float:none !important; margin:0px !important; width:100% !important;}.asa2_fbh_button {width:40%;display:block;margin-top:20px;color:#fff !important;font-weight:bold;background-color:#00b7d5; border-radius:5px;cursor:pointer;padding-top:8px;padding-bottom:8px;text-align:center; text-decoration:none !important;border:0 !important;outline:0 !important;-webkit-box-shadow:none !important;box-shadow:none !important;transition-duration:0.3s !important;transition:0.3s !important;}.asa2_fbh_button:hover, .asa2_fbh_button:focus {background-color:#007aff;color:#fff !important;text-decoration:none !important;border:0 !important;outline:0 !important;-webkit-box-shadow:none !important;box-shadow:none !important;}@media only screen and (max-width:768px) {.asa2_horizontal_box .asa2_product_col_1, .asa2_horizontal_box .asa2_product_col_1 {float:none; margin-right:0px; width:100% !important;}.asa2_horizontal_box .asa2_product_col_1 {margin-bottom:15px;}.asa2_horizontal_box img {margin:0 auto;}.asa2_product_col_2 {margin-left:auto !important;}}@media (max-width:500px) {.asa2_horizontal_box .asa2_product_col_1 img {max-width:100% !important;}.asa2_fbh_button { width:100%; }}.asa2_horizontal_box {box-shadow:0 10px 6px -6px #777;}.asa2_horizontal_box:before, .asa2_horizontal_box:after {box-shadow:none; }#asa2_01a574939abfee8731cfbcc51501e5a1-price-modal:target {opacity:1;pointer-events:auto;}<\/style>\t\t\t<div class=\"asa2_h_box_tpl asa2_c51b65d55d1782c1543145ddd5b1a367\" data-tpl=\"_resin-expert-horizontal-box-neu\"><div class=\"asa2_horizontal_box_outer\">\n  <div class=\"asa2_horizontal_box\" >\n\n    <div class=\"asa2-group\">\n    <div class=\"item_img asa2_product_col_1 \">\n        <a href=\"https:\/\/www.amazon.com\/dp\/B009EU5ZNO?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\"  title=\"J-B WELD Plastic Bonder Structural Adhesive Syringe\"  target=\"_blank\" rel=\"nofollow\" data-linktype=\"image\"><img decoding=\"async\" border=\"0\" width=\"200\" height=\"200\" src=\"https:\/\/m.media-amazon.com\/images\/I\/41LRwDERsxL._SL500_.jpg\"  alt=\"J-B WELD Plastic Bonder Structural Adhesive Syringe\" \/><\/a>  <\/div>    <div class=\"asa2_product_col_2 \">\n                              \n \n                <div class=\"asa2_title\"><a href=\"https:\/\/www.amazon.com\/dp\/B009EU5ZNO?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\" target=\"_blank\" rel=\"nofollow\" data-linktype=\"title\">J-B WELD Plastic Bonder Structural Adhesive Syringe<\/a><\/div>\n        <ul>\r\n \t<li><span class=\"a-list-item\">Quick-setting and multipurpose two-part urethane adhesive<\/span><\/li>\r\n \t<li><span class=\"a-list-item\">Gap filling system provides a strong and lasting bond<\/span><\/li>\r\n \t<li><span class=\"a-list-item\"> Takes 15 minutes to set and 30 hours to cure<\/span><\/li>\r\n<\/ul>\r\n&nbsp;\n                \n      <a class=\"asa2_fbh_button\" href=\"https:\/\/www.amazon.com\/dp\/B009EU5ZNO?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\" target=\"_blank\" rel=\"nofollow\">View on Amazon<\/a>\n      <\/div>    \n    <\/div>\n    <\/div><\/div><\/div>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>Depending on the nature of your PP surface, you may need an additional adhesion promoter to ensure good\u00a0<\/strong><\/span><span style=\"color: #00b7d5; font-size: large;\"><span style=\"caret-color: #00b7d5;\"><b>adherence.\u00a0<\/b><\/span><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Acrylic Adhesive for Polypropylene<\/h2>\n<p>Acrylic adhesives for polypropylene and polyethylene bonding, like epoxy resin adhesives, are based on two components. These are also mixed together and enter into a high-strength reaction with each other. Acrylic adhesives also offer the advantage of being able to<strong> <a href=\"https:\/\/resin-expert.com\/en\/guide\/best-glue-for-plastic\" target=\"_blank\" rel=\"noopener\">bond plastics<\/a><\/strong> without prior surface treatment with a primer.<\/p>\n<p>In addition to PP and PE, acrylic adhesives bond various other plastics, such as PMMA or ABS. Materials such as metals and metal alloys, wood, ceramics and stone are also bonded together with high strength.<\/p>\n<p><strong>Advantages:<\/strong><\/p>\n<p>Two-component acrylic adhesives offer the following advantages:<\/p>\n<div class=\"sue-shadow-wrap su-u-trim sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-simple\"><div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;box-shadow:0px 1px 2px #eeeeee;border:1px solid #cccccc\"><div class=\"sue-panel-content su-u-trim\" style=\"padding:15px;text-align:left\">\n<div class=\"su-list\" style=\"margin-left:5px\">\n<ul>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Bonds low-energy materials without prior surface treatment<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Acrylate adhesives offer high water resistance as well as good impact and shear strength<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Optimal UV resistance<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Good resistance to chemicals, temperature, and aging<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Short and simple process<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Good hand strength after a short time; final strength is extremely high<\/strong><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div>\n<p>&nbsp;<\/p>\n<h4>Recommendation: J-B WELD High Strength Plastic Bonder<\/h4>\n<p>This plastic bonder by J-B Weld offers durable and long-lasting repairs to your plastic surfaces. It has a simple 1:1 mixing ratio, and will set quickly within 15 minutes, and can even be sanded within just half an hour. This product has a high tensile strength of 3770 psi and will cure to a hard, permanent tan-colored bond.<\/p>\n\t\t\t<div class=\"asa2_h_box_tpl asa2_e1d0b685d363613bf85011d192768da4\" data-tpl=\"_resin-expert-horizontal-box-neu\"><div class=\"asa2_horizontal_box_outer\">\n  <div class=\"asa2_horizontal_box\" >\n\n    <div class=\"asa2-group\">\n    <div class=\"item_img asa2_product_col_1 \">\n        <a href=\"https:\/\/www.amazon.com\/dp\/B014AFQLSA?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\"  title=\"J-B WELD Plastic Bonder Structural Adhesive Syringe\"  target=\"_blank\" rel=\"nofollow\" data-linktype=\"image\"><img decoding=\"async\" border=\"0\" width=\"111\" height=\"500\" src=\"https:\/\/m.media-amazon.com\/images\/I\/31EwBnNa07L._SL500_.jpg\"  alt=\"J-B WELD Plastic Bonder Structural Adhesive Syringe\" \/><\/a>  <\/div>    <div class=\"asa2_product_col_2 \">\n                              \n \n                <div class=\"asa2_title\"><a href=\"https:\/\/www.amazon.com\/dp\/B014AFQLSA?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\" target=\"_blank\" rel=\"nofollow\" data-linktype=\"title\">J-B WELD Plastic Bonder Structural Adhesive Syringe<\/a><\/div>\n        <ul class=\"a-unordered-list a-vertical a-spacing-mini\">\r\n \t<li><span class=\"a-list-item\">Quick-setting two-part urethane adhesive system<\/span><\/li>\r\n \t<li><span class=\"a-list-item\">Provides strong and lasting repairs&nbsp;<\/span><\/li>\r\n \t<li><span class=\"a-list-item\">Simple 1:1 mixing ratio and sets in 15 minutes<\/span><\/li>\r\n<\/ul>\n                \n      <a class=\"asa2_fbh_button\" href=\"https:\/\/www.amazon.com\/dp\/B014AFQLSA?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\" target=\"_blank\" rel=\"nofollow\">View on Amazon<\/a>\n      <\/div>    \n    <\/div>\n    <\/div><\/div><\/div>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>Since the adhesive contains acrylic, it should only be used outdoors or in well-ventilated work areas. A respiratory mask as well as protective goggles and disposable gloves are recommended when working.<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Superglue as a Polypropylene Adhesive<\/h2>\n<p>Cyanoacrylate adhesive, also known as instant adhesive, is a one-component adhesive that not only has a very high final strength but also an extremely short curing time. Processing is extremely simple. After thorough surface cleaning and priming, the adhesive is applied thinly but in sufficient quantity and the two substrates are joined with short, high pressure.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9225\" src=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene.jpg\" alt=\"Adhesive for Polypropylene\" width=\"848\" height=\"566\" srcset=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene.jpg 848w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-300x200.jpg 300w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-768x513.jpg 768w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-30x20.jpg 30w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-75x50.jpg 75w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-110x73.jpg 110w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-160x107.jpg 160w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-500x334.jpg 500w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-150x100.jpg 150w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-360x240.jpg 360w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-262x175.jpg 262w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-162x108.jpg 162w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-100x67.jpg 100w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Adhesive-for-Polypropylene-610x407.jpg 610w\" sizes=\"(max-width: 848px) 100vw, 848px\" \/><\/p>\n<p>Cyanoacrylate adhesive cures instantly. This applies to bonding almost all materials including PP, PE, ABS, metals, stone, wood, ceramics, porcelain, rubber, leather, and many others. Moreover, cyanoacrylate adhesive has a solid gap-filling capacity and is ideally suited for porous materials.<\/p>\n<p><strong>Advantages:<\/strong><\/p>\n<p>The advantages of superglue are the following:<\/p>\n<div class=\"sue-shadow-wrap su-u-trim sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-simple\"><div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;box-shadow:0px 1px 2px #eeeeee;border:1px solid #cccccc\"><div class=\"sue-panel-content su-u-trim\" style=\"padding:15px;text-align:left\">\n<div class=\"su-list\" style=\"margin-left:5px\">\n<ul>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Cures very quickly<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Solid tensile and shear strength<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Free of solvents<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Perfect for small areas<br \/>\n<\/strong><\/li>\n<li><i class=\"sui sui-check-circle\" style=\"color:#008000\"><\/i> <strong>Application is easy and clean<\/strong><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div>\n<p>&nbsp;<\/p>\n<h3>Recommendation: LOCTITE Super Glue Plastics Bonding System<\/h3>\n<p>Loctite&#8217;s superglue is formulated specially for tough-to-bond plastics. While most superglues do not require two parts, this particular product includes both a primer and activator to ensure maximum adherence to your PP plastic surface. This product involves a two-part system, where you will first apply an activator, a minute after which you will then apply the superglue. Just one drop will result in great strength and a permanent bond, and the slanted felt tip of the applicator allows for precision, making it great for smaller or more detailed items.<\/p>\n\t\t\t<div class=\"asa2_h_box_tpl asa2_a8ad43bbf4688d96d5e3ef77ba53bb35\" data-tpl=\"_resin-expert-horizontal-box-neu\"><div class=\"asa2_horizontal_box_outer\">\n  <div class=\"asa2_horizontal_box\" >\n\n    <div class=\"asa2-group\">\n    <div class=\"item_img asa2_product_col_1 \">\n        <a href=\"https:\/\/www.amazon.com\/dp\/B07G2SMXWR?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\"  title=\"LOCTITE Super Glue Plastics Bonding System with Activator\"  target=\"_blank\" rel=\"nofollow\" data-linktype=\"image\"><img decoding=\"async\" border=\"0\" width=\"200\" height=\"200\" src=\"https:\/\/m.media-amazon.com\/images\/I\/51ZPLfEOjmL._SL500_.jpg\"  alt=\"LOCTITE Super Glue Plastics Bonding System with Activator\" \/><\/a>  <\/div>    <div class=\"asa2_product_col_2 \">\n                              \n \n                <div class=\"asa2_title\"><a href=\"https:\/\/www.amazon.com\/dp\/B07G2SMXWR?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\" target=\"_blank\" rel=\"nofollow\" data-linktype=\"title\">LOCTITE Super Glue Plastics Bonding System with Activator<\/a><\/div>\n        <ul class=\"a-unordered-list a-vertical a-spacing-mini\">\r\n \t<li><span class=\"a-list-item\">Two-part system with activator to prime the surface<\/span><\/li>\r\n \t<li><span class=\"a-list-item\">Develops tremendous strength with just one drop<\/span><\/li>\r\n \t<li>Slanted felt tip for precision<\/li>\r\n<\/ul>\n                \n      <a class=\"asa2_fbh_button\" href=\"https:\/\/www.amazon.com\/dp\/B07G2SMXWR?tag=resin-expert-20&linkCode=ogi&th=1&psc=1\" target=\"_blank\" rel=\"nofollow\">View on Amazon<\/a>\n      <\/div>    \n    <\/div>\n    <\/div><\/div><\/div>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>The only disadvantage to this product is its limited shelf life; it cannot be stored and used again later, as the contents tend to dry up as a result of poor cap design.\u00a0<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>How to Glue Polypropylene<\/h2>\n<p>For PP bonding, prior surface treatment is of great importance. When using modern adhesives such as two-component acrylate or epoxy resin adhesives, the application of a primer is not a must, but it definitely does no harm. Alternatives to this are pickling or corona discharge. However, these are difficult to apply for the home user. Moreover, pickling is considered to be somewhat harmful.<\/p>\n<p>Furthermore, the surface must be free of all chemical substances such as grease and oil as well as dust and dirt. Clean the surfaces of the substrates thoroughly with isopropanol and a lint-free cloth, and apply a primer or activator if necessary.<\/p>\n<p>Now, apply the adhesive according to the manufacturer&#8217;s data sheet. This can be done on one or both sides, depending on the adhesive used. Join the two substrates and fix them together if necessary. This step is particularly important with smooth materials such as PP, as otherwise the substrates could shift before the adhesive has fully cured.\u00a0Immediately pick up any leaked adhesive with a paper towel or lint-free cloth.<\/p>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>Observe the curing time according to the manufacturer&#8217;s instructions and rather give the substrates more time than too little.<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Tips and Tricks for Gluing Polypropylene<\/h2>\n<p>It is no coincidence that the development of PP adhesives is a highly promising branch of industry. PP is one of the most popular plastics, which means that PP bonding is also becoming increasingly popular. To make this easier for you, we have listed some professional tips on PP bonding below.<\/p>\n<div class=\"su-list\" style=\"margin-left:0px\">\n<ul>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> <strong>We recommend that you use products from market leaders.<\/strong> This is because market leaders for the development of technical adhesives usually specialize in plastics, as they are aware of the difficulties that the joining of PP and PE offer. This way, you can be sure that the bonding process will be successful and that a really stable adhesive seam will be created.<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9228\" src=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive.jpg\" alt=\"Polypropylene Adhesive\" width=\"848\" height=\"566\" srcset=\"https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive.jpg 848w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-300x200.jpg 300w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-768x513.jpg 768w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-30x20.jpg 30w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-75x50.jpg 75w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-110x73.jpg 110w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-160x107.jpg 160w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-500x334.jpg 500w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-150x100.jpg 150w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-360x240.jpg 360w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-262x175.jpg 262w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-162x108.jpg 162w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-100x67.jpg 100w, https:\/\/resin-expert.com\/wp-content\/uploads\/2021\/02\/Polypropylene-Adhesive-610x407.jpg 610w\" sizes=\"(max-width: 848px) 100vw, 848px\" \/><\/p>\n<ul>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> <strong>Caution is advised with pressure-sensitive adhesives.<\/strong> Although these are often offered explicitly for bonding low-energy plastics, they generally remain tacky and do not cure completely. This means that there is no permanent bonding, but it can be detached again at any time.<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> <strong>In addition to bonding, gentle heating of the substrate surfaces can sometimes provide relief.<\/strong> Here, you apply heat to the thermoplastic so that it dissolves. Now, the substrates can be bonded together without adhesive.<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> <strong>However, a special heat gun or alternatively a welding rod is required for this application.<\/strong> As with bonding, it is also possible to seal cracks in the substrate surface. However, care must be taken with this technique, as inexperienced users may deform the substrates or heat them up too much.<\/li>\n<li><i class=\"sui sui-chevron-circle-right\" style=\"color:#007aff\"><\/i> <strong>Superglues used for PP or PE promise a very short curing time; however, they take much longer for the materials mentioned above.<\/strong> If you want to achieve a truly permanent bond, you should expect a curing phase of up to 24 hours.<\/li>\n<\/ul>\n<div><span lang=\"EN-US\"><\/div><\/span><\/div>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>Inform yourself in advance about occupational safety when bonding PP and PE. If possible, use a respirator as well as protective goggles and disposable gloves. If you are prone to allergic reactions to latex, it is better to use nitrile gloves.<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p>&nbsp;<\/p>\n<h3>Which Adhesive Sticks to PP?<\/h3>\n<p>Special adhesives are required for PP, either two-component adhesives based on epoxy resin or acrylate, or cyanoacrylate adhesives, which are so-called instant adhesives. Recommended, but not a must, is the prior application of a primer.<\/p>\n<p>&nbsp;<\/p>\n<h3>How Do I Recognize PP or PE?<\/h3>\n<p>There are various methods for this, either by scoring with the fingernail or by the burning test. The fingernail test produces a crack in PP or PE, as these are soft plastics. When PP burns, not only does it produce a paraffin-like odor, but also a bright flame with a bluish core.<\/p>\n<p>&nbsp;<\/p>\n<h3>Is Polypropylene Safe?<\/h3>\n<p>PP is generally considered to be harmless, as it is also used in the food industry. As a rule, plasticizers are also not used for PP. However, care should be taken with containers used for freezing food, as these could contain harmful plasticizers.<\/p>\n<p>&nbsp;<\/p>\n<blockquote><p><span style=\"font-size: 14pt; color: #00b7d5;\"><strong>Gluing PP is difficult, but not impossible if you know how to do it and what you should pay special attention to. We hope that we have been able to help you with our tips on PP and PE bonding.<\/strong><\/span><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are materials that are quick and easy to glue. And then there is polypropylene (PP). The question quickly arises for the user: What can PP be bonded with? What exactly makes it so difficult to join PP plastic in a really durable and stable way? Which PP adhesive should you use for this purpose?&#8230;<\/p>\n","protected":false},"author":30,"featured_media":9226,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"wprm-recipe-roundup-name":"","wprm-recipe-roundup-description":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[127,130,58],"tags":[],"class_list":["post-8791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-epoxy-resin","category-gluing","category-guide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Best Glue for Polypropylene - A Guide to the Best Glue for Plastics<\/title>\n<meta name=\"description\" content=\"What is Polypropylene? 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