{"id":5,"date":"2015-04-14T17:26:12","date_gmt":"2015-04-14T17:26:12","guid":{"rendered":"http:\/\/impreza2.us-themes.com\/?page_id=5"},"modified":"2026-08-29T10:37:57","modified_gmt":"2026-08-29T10:37:57","slug":"home","status":"publish","type":"page","link":"https:\/\/lei-ko.de\/en\/","title":{"rendered":"Home"},"content":{"rendered":"
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Michael Leibfritz Engineering Office<\/span><\/span><\/div>
Your Specialist for Undercuts<\/span><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/section>
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L-Core<\/span> The original<\/h2>\n<\/div><\/div>
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We design and manufacture custom sinkers tailored to your specific requirements. With over 35 years of experience in sinkers, we are a reliable and knowledgeable partner. From the initial idea to the finished solution, we guide you through every step of the project and offer customized solutions that are perfectly suited to your application.<\/p>\n

We manufacture recessed cores ranging from \u00d8 6 mm to \u00d8 400 mm. The maximum possible circumferential undercut is 23%.<\/p>\n

The smallest diameter achieved to date was \u00d85.8 mm.
\nThe largest diameter achieved to date was \u00d8380 mm.<\/p>\n

The largest sprue core produced to date had a contour diameter of 260 mm for a plastic part length of 850 mm. The total length of this sprue core was 1,030 mm. It was installed in a vertically closing mold.<\/p>\n<\/div><\/div>

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Advantages<\/span> over Screw-Out Tools<\/h3>\n<\/div><\/div>
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Smaller and More Cost-Effective Injection Molding Tools<\/h6><\/div><\/div>
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Shorter cycle times<\/h6><\/div><\/div>
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Simpler Tool Design<\/h6><\/div><\/div>
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Easier Tool Assembly<\/h6><\/div><\/div>
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More Options for Designing the Threaded End<\/h6><\/div><\/div>
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A clearance groove at the end of the thread is possible<\/h6><\/div><\/div>
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Simpler and More Effective Cooling<\/h6><\/div><\/div>
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We offer various types of coatings<\/span> .<\/h3>\n

This extends the service life.<\/h4>\n<\/div><\/div>
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Guaranteed Service Life<\/span><\/span><\/h2>

in cycles<\/h4>\n<\/div><\/div><\/div><\/div><\/div>

uncoated<\/span>500.000<\/span><\/h4>
500.000<\/span><\/div><\/div><\/div>

coated<\/span>1.000.000<\/span><\/h4>
1.000.000<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

Guaranteed Service Life<\/span><\/span><\/h2>

in cycles<\/h4>\n<\/div><\/div><\/div><\/div><\/div>

uncoated<\/span>500.000<\/span><\/h4>
500.000<\/span><\/div><\/div><\/div>

coated<\/span>1.000.000<\/span><\/h4>
1.000.000<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div>
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For medical components, coated injection cores can be operated even without grease or oil.<\/strong><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>

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We also manufacture expandable cores,
\nplease feel free to contact us about this.<\/span><\/p>\n<\/div><\/div>

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Kontakt
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Michael Leibfritz<\/strong>
\nEngineering Office
\nSpessartstra\u00dfe 7
\n72336 Balingen
\nGermany<\/h4>\n<\/div><\/div>
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info@lei-ko.de<\/a><\/h3><\/div><\/div><\/div><\/div><\/div>
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+49 7433 37707<\/h3><\/div><\/div>
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+49 170 1894333<\/h3><\/div><\/div>
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+86 135 1084 2014<\/h3><\/div><\/div><\/div><\/div><\/div><\/div>
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Impressum<\/span><\/a><\/div><\/div><\/div><\/div>
Datenschutz<\/span><\/a><\/div><\/div><\/div><\/div>
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<\/div><\/div><\/div><\/div><\/div><\/section>","protected":false},"excerpt":{"rendered":"Konstruktionsb\u00fcro Michael LeibfritzIhr Spezialist f\u00fcr HinterschneidungenL-Core Das Original Wir konstruieren und fertigen individuelle Einfallkerne ganz nach Ihren Anforderungen. Durch \u00fcber 35 Jahre Erfahrung mit Einfallkernen sind wir ein zuverl\u00e4ssiger und kompetenter Partner. Von der ersten Idee bis zur fertigen L\u00f6sung begleiten wir Sie durch jeden Projektschritt und bieten ma\u00dfgeschneiderte L\u00f6sungen, die perfekt zu Ihrem Anwendungsfall...","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/pages\/5","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/comments?post=5"}],"version-history":[{"count":340,"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/pages\/5\/revisions"}],"predecessor-version":[{"id":1631,"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/pages\/5\/revisions\/1631"}],"wp:attachment":[{"href":"https:\/\/lei-ko.de\/en\/wp-json\/wp\/v2\/media?parent=5"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}