{"product_id":"12-inch-mushroom-bag-impulse-sealer","title":"Bonsai 12\" Impulse Heat Sealer for Mushroom Bags — 8mm Seal, Hand Press","description":"\u003cstyle\u003e\n.bmm-pdp{color:#101a24;box-sizing:border-box;max-width:100%;line-height:1.65}\n.bmm-pdp *{box-sizing:border-box;max-width:100%}\n.bmm-pdp p,.bmm-pdp li,.bmm-pdp td,.bmm-pdp th,.bmm-pdp span,.bmm-pdp summary,.bmm-pdp div{font-family:inherit;color:#101a24}\n.bmm-pdp p{margin:0 0 14px}\n.bmm-pdp h2{margin:38px 0 12px;color:#101a24;font-weight:600;letter-spacing:-.01em}\n.bmm-pdp .b{font-weight:600 !important}\n.bmm-pdp a{color:#1d4e79 !important;text-decoration:underline;text-underline-offset:2px}\n.bmm-pdp .bmm-lead{font-size:1.06em}\n.bmm-pdp .bmm-plate{background:#101a24;margin:24px 0 30px;padding:2px;display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:2px;list-style:none !important;list-style-type:none !important}\n.bmm-pdp .bmm-plate li{list-style:none !important;list-style-type:none !important;background:#101a24;padding:18px 14px;text-align:left;border-left:2px solid #2c4356}\n.bmm-pdp .bmm-plate li:first-child{border-left:0}\n.bmm-pdp .bmm-plate li::marker{content:\"\" !important;font-size:0 !important}\n.bmm-pdp .bmm-plate li::before,.bmm-pdp .bmm-plate li::after{content:none !important;display:none !important}\n.bmm-pdp .bmm-plate .bmm-num{display:block;color:#ffffff !important;font-size:1.45em;font-weight:600;font-variant-numeric:tabular-nums;line-height:1.2}\n.bmm-pdp .bmm-plate .bmm-unit{display:block;color:#8ba6bd !important;font-size:.82em;margin-top:5px;line-height:1.4}\n.bmm-pdp .bmm-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:18px 0}\n.bmm-pdp .bmm-spec{width:100%;border-collapse:collapse;min-width:420px;font-variant-numeric:tabular-nums}\n.bmm-pdp .bmm-spec th,.bmm-pdp .bmm-spec td{padding:11px 14px;text-align:left;vertical-align:top;border:0;border-bottom:1px solid #dfe4e8}\n.bmm-pdp .bmm-spec tbody th{font-weight:500;color:#4a5b6b !important;width:47%}\n.bmm-pdp .bmm-spec tbody td{font-weight:600}\n.bmm-pdp .bmm-spec tbody tr:nth-child(odd) th,.bmm-pdp .bmm-spec tbody tr:nth-child(odd) td{background:#f5f7f9}\n.bmm-pdp .bmm-spec tbody tr:last-child th,.bmm-pdp .bmm-spec tbody tr:last-child td{border-bottom:2px solid #101a24}\n.bmm-pdp .bmm-note{border-left:3px solid #1d4e79;padding:4px 0 4px 18px;margin:22px 0}\n.bmm-pdp .bmm-note p:last-child{margin-bottom:0}\n.bmm-pdp .bmm-links{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0;padding:0;list-style:none !important;list-style-type:none !important}\n.bmm-pdp .bmm-links li{list-style:none !important;list-style-type:none !important}\n.bmm-pdp .bmm-links li::marker{content:\"\" !important;font-size:0 !important}\n.bmm-pdp .bmm-links li::before,.bmm-pdp .bmm-links li::after{content:none !important;display:none !important}\n.bmm-pdp .bmm-links a{display:inline-block;padding:9px 16px;background:#101a24;color:#fff !important;text-decoration:none !important;font-weight:500}\n.bmm-pdp .bmm-links a.bmm-alt{background:transparent;color:#101a24 !important;border:1px solid #c3cbd3}\n.bmm-pdp details{border-bottom:1px solid #dfe4e8;margin:0}\n.bmm-pdp summary.bmm-q{cursor:pointer;list-style:none !important;padding:15px 40px 15px 0;position:relative;font-weight:600}\n.bmm-pdp summary.bmm-q::-webkit-details-marker{display:none}\n.bmm-pdp summary.bmm-q::marker{content:\"\" !important}\n.bmm-pdp summary.bmm-q::after{content:\"\";position:absolute;right:8px;top:calc(50% - 4px);width:8px;height:8px;border-right:2px solid #1d4e79;border-bottom:2px solid #1d4e79;transform:rotate(45deg);transition:transform .2s ease}\n.bmm-pdp details[open] summary.bmm-q::after{transform:rotate(-135deg)}\n.bmm-pdp .bmm-a{padding:0 0 16px}\n.bmm-pdp .bmm-a p:last-child{margin-bottom:0}\n@media (prefers-reduced-motion:reduce){.bmm-pdp summary.bmm-q::after{transition:none}}\n@media (max-width:600px){.bmm-pdp .bmm-links a{display:block;text-align:center}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bmm-pdp\"\u003e\n\n\u003cp class=\"bmm-lead\"\u003eThe \u003cspan class=\"b\"\u003eBonsai 12\" PFS-300 impulse heat sealer\u003c\/span\u003e is a hand press sealer fitted with an \u003cspan class=\"b\"\u003e8mm seal wire\u003c\/span\u003e, the wide band you want for closing mushroom spawn and grow bags. It draws 400 watts from a standard 110V outlet, so it goes anywhere on the bench with no special wiring.\u003c\/p\u003e\n\n\u003cul class=\"bmm-plate\"\u003e\n\u003cli\u003e\n\u003cspan class=\"bmm-num\"\u003e12\"\u003c\/span\u003e\u003cspan class=\"bmm-unit\"\u003eseal length\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bmm-num\"\u003e8 mm\u003c\/span\u003e\u003cspan class=\"bmm-unit\"\u003eseal width\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bmm-num\"\u003e400 W\u003c\/span\u003e\u003cspan class=\"bmm-unit\"\u003epower\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bmm-num\"\u003e110V\u003c\/span\u003e\u003cspan class=\"bmm-unit\"\u003estandard outlet\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAn impulse sealer only heats while the arm is pressed down, then cools with the bag still clamped. That is what gives you a clean, fused seal instead of a stretched or scorched one, and it means the sealer is not sitting hot on the bench between bags.\u003c\/p\u003e\n\n\u003ch2\u003eWhy the 8mm seal matters for mushroom bags\u003c\/h2\u003e\n\n\u003cp\u003eMushroom bags are gusseted, heavier than packaging film, and have to hold their seal through a full sterilization cycle and weeks of colonization. A narrow seal line leaves very little margin: one fold, crease or bit of grain dust in the seal area and you have a channel for contamination. An 8mm band fuses a much wider strip of material, which gives every seal more room for error.\u003c\/p\u003e\n\n\u003ch2\u003eBuilt to hold up to daily use\u003c\/h2\u003e\n\n\u003cp\u003eThe transformer and coil use copper components, which run cooler and lose less power to heat than cheaper builds, so the sealer keeps performing consistently across long bagging sessions. The housing is antioxidant aluminum with a triple-coat white paint finish that resists water and rust, a better fit for a humid prep room than the iron shells used on many budget sealers.\u003c\/p\u003e\n\n\u003ch2\u003eGetting a reliable seal every time\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eKeep the seal area of the bag clean and dry. Grain dust, substrate or moisture caught in the seal is the most common cause of a failed seal.\u003c\/li\u003e\n\u003cli\u003eLay the bag flat across the seal bar with no folds or wrinkles in the seal zone.\u003c\/li\u003e\n\u003cli\u003ePress the arm down and hold it through the heat cycle, then keep holding a moment while the seal cools before you release.\u003c\/li\u003e\n\u003cli\u003eTest on a spare bag whenever you change bag types, and adjust the heat setting until the seal is fully fused without burning through.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"bmm-note\"\u003e\n\u003cp\u003eInspect every seal before the bag goes into the sterilizer. A weak seal is far cheaper to redo at the bench than to discover as a contaminated bag three weeks later.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003cdiv class=\"bmm-scroll\"\u003e\n\u003ctable class=\"bmm-spec\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eBonsai PFS-300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeal length\u003c\/th\u003e\n\u003ctd\u003e12 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeal wire\u003c\/th\u003e\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e400 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e110V, standard outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperation\u003c\/th\u003e\n\u003ctd\u003eHand press impulse sealer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransformer \u0026amp; coil\u003c\/th\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHousing\u003c\/th\u003e\n\u003ctd\u003eAluminum, triple-coat white paint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cul class=\"bmm-links\"\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/mushroom-bags\"\u003eMushroom bags\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/sterilizer-autoclaves-pasteurizers\" class=\"bmm-alt\"\u003eSterilizers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/growing-supplies\" class=\"bmm-alt\"\u003eGrowing supplies\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary class=\"bmm-q\"\u003eWill this seal filter patch mushroom bags?\u003c\/summary\u003e\n\u003cdiv class=\"bmm-a\"\u003e\n\u003cp\u003eYes, that is what it is built for. The 8mm seal wire is sized for polypropylene spawn and grow bags like the ones in our \u003ca href=\"\/collections\/mushroom-bags\"\u003emushroom bags collection\u003c\/a\u003e. Run a test seal whenever you switch to a new bag type.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary class=\"bmm-q\"\u003eDo I need a special outlet?\u003c\/summary\u003e\n\u003cdiv class=\"bmm-a\"\u003e\n\u003cp\u003eNo. It runs on a standard 110V household outlet and draws 400 watts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary class=\"bmm-q\"\u003eIs it hand operated or foot operated?\u003c\/summary\u003e\n\u003cdiv class=\"bmm-a\"\u003e\n\u003cp\u003eHand press. You lay the bag across the seal bar and press the arm down by hand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary class=\"bmm-q\"\u003eWhy are my seals failing?\u003c\/summary\u003e\n\u003cdiv class=\"bmm-a\"\u003e\n\u003cp\u003eAlmost always one of three things: debris or moisture in the seal area, releasing the arm before the seal has cooled, or a heat setting that is too low for the bag. Clean the seal zone, hold the arm through the cool-down, and test-seal a spare bag while adjusting the heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary class=\"bmm-q\"\u003eWhy an impulse sealer instead of a constant-heat sealer?\u003c\/summary\u003e\n\u003cdiv class=\"bmm-a\"\u003e\n\u003cp\u003eAn impulse sealer heats only while the arm is down and lets the seal cool under pressure, which produces a cleaner, stronger fused seal on polypropylene. It also is not sitting hot on the bench between bags.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Blue Myco","offers":[{"title":"Default Title","offer_id":46324498628836,"sku":"BONSL12","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/9325\/8212\/files\/b39f60_c57b0eed78d141fb84bea0d6bfc3358f_mv2.webp?v=1747864430","url":"https:\/\/www.bluemycomfg.com\/products\/12-inch-mushroom-bag-impulse-sealer","provider":"Blue Myco MFG","version":"1.0","type":"link"}