Uygulama Açıklaması

Destekleyici bir rol - Glulam için özel yapıştırıcılar

Binaların yük taşıma sistemleri için ahşap eleman üreticileri, büyük zorluluklarla karşılamaktadır. Bir tarafta üretim süreci özel standartlara tabi olup kullanılan yapıştırıcıların inşaat için onaylı ve sertifikalı olması gerekmektedir. Diğer tarafta ise, ister kurtağzı isterse laminasyon olsun her uygulama benzersiz gereksinimlere sahiptir. Jowat, yapıştırılmış lamine ahşaptan (GLT veya Glulam) çapraz lamine ahşaba (CLT), masif yapı ahşabından i-Kirişlere kadar farklı uygulamalar ve ürünlere özel olarak adapte edilmiş tek bileşenli, nemle kürlenen poliüretan prepolimer yapıştırıcılardan oluşan bir ürün portföyün sahiptir. Jowapur® serisi bu yapıştırıcıların performansı seri üretiminden önce karmaşık prosedürlerde kapsamlı bir şekilde doğrulanmıştır. Özel içeriği, özellikleri ve işleme parametrelerinde dolayı bu yapıştırıclar, yük taşıyan glulam üretiminde farklı uygulamaların taleplerini karşılamaktadır. Örneğin, Jowapur® serisinden çeşitli özel yapıştırıcılar, kısa işleme sürelerinden dolayı hızlı ve esnek üretim süreçleri için özellikle uygundur. Diğer ürünler uzun açık montaj süresi sağlayarak büyük parça ve büyük partilerin üretilmesini temin etmektedir.

Poliüretan yapıştırıcılar, yük taşıyan ahşap parçaların üretilmesinde çeşitli avantajlar yanı sıra kondansasyon reçineleri gibi diğer sistemlere göre üstün bir ürün kalitesi sunmaktadır. Hiçbir şekilde formaldehit içermemekle birlikte %100 katı içeriği sayesinde çok daha az gramajlarda uygulanabilmektedir. Buna ilaveten, prepolimerler, oda sıcaklığında birkaç dakika içinde kürlenebilmekte ve renksiz görünümleri sayesinde gizli bir yapışma hattı sağlamaktadır.

Jowapur® yapıştırıcıları tek komponent olarak işlenmektedir. Çok fazla hazırlanmış yapıştırıcı için gereken karıştırma, kap ömrü ve yapıştırıcı kalıntıları artık geçmişte kaldı. Minimal köpüklenme, üst üste veya yan yana yerleştirildiklerinde lamellerin yapışmalarını önler ve temizlik süresini büyük ölçüde azaltır. PUR prepolimerler, kurtağızlarının üretim ve kürlenme sırasında preslendikten sonra kayarak ayrılmalarını önleyen lifler ile güçlendirilmiştir. Bu yapıştırıcılar akmaz ve temassız uygulamalar için son derece uygundur. Jowat, yük taşıyan glulam üretimi ve tüm standart uygulama teknolojileri için özel yapıştırıcılar sunmaktadır.

 

Ürün Bilgileri

Jowapur® 681.xx product series

Get more information one our new certified portfolio for fingerjointing and laminating

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Base Viscosity [mPas] /
Temperature [°C]
Max. Assembly Time [min] /
Temperature [°C]
Application Certificate Download
technical
data sheet (PDF)
Jowapur® 686.20 1-Component PUR Prepolymer 10500 / 20 10 / 20 Manufacturing bonded load-bearing timber structures (Fingerjointing) Adhesive Type: EN 15425–I–70–FJ–0.1–w de en fr
Jowapur® 686.30 1-Component PUR Prepolymer 10500 / 20 15 / 20 Manufacturing bonded load-bearing timber structures Adhesive Type: EN 15425–I–70–GP–0.3–w de en fr
Jowapur® 686.60 1-Component PUR Prepolymer 10500 / 20 45 / 20 Manufacturing bonded load-bearing timber structures Adhesive Type: EN 15425–I–70–GP–0.3–w de en fr
Jowapur® 681.10 1-Component PUR Prepolymer 15500 ± 2500 / 20 10 / 20 Manufacturing bonded load-bearing timber structures Adhesive type: EN 15425–I–70–GP–0.3–w de en fr
Jowapur® 681.60 1-Component PUR Prepolymer 15500 ± 2500 / 20 60 / 20 Manufacturing bonded load-bearing timber structures Adhesive type: EN 15425–I–70–GP–0.3–w de en fr
Jowapur® 681.40 1-Component PUR Prepolymer 15500 ± 2500 / 20 40 / 20 Manufacturing bonded load-bearing timber structures Adhesive Type: EN 15425–I–70–GP–0.3–w de en fr

The products listed only represent a limited selection of the available product portfolio. Product availability might differ by region. The technical data, characteristics and field of application provided in the table outline the differences between the individual adhesives of the product portfolio. Our Application Technology Department and our Sales Representatives are on hand to provide advice and support you finding the best adhesive for your particular application.

Note: The information on this page is based on test results from our laboratories as well as on experience gained in the field, and does in no way constitute any guarantee of properties. Due to the wide range of different applications, substrates, and processing methods beyond our control, no liability may be derived from these indications nor from the information provided by our free technical advisory service. Customer trials under everyday conditions, testing for suitability at normal processing conditions, and appropriate fit-for-purpose testing are absolutely necessary. For the specifications as well as further information, please refer to the latest technical data sheets.

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AhşapYapı elemanları
Profesyonel makaleler

Carrying a lot of weight - Multifaceted adhesives for load-bearing glulam

House of Technologie Jowat Glulam

The manufacture of load-bearing glulam is governed by strict regulations. Apart from having to be certified, the special adhesives used for bonding the wood also must fulfil the different requirements of all applications in load-bearing timber construction. A new product family in the Jowapur® series supplied by Jowat, the adhesives manufacturer from Detmold, provides a comprehensive portfolio of certified one-component prepolymer PUR adhesives, with different formulations for a wide variety of processes in the manufacture of load-bearing glulam.

Load-bearing glulam plays a growing role in the construction industry and the use of load-bearing glulam in new buildings has been increasing for years. Intense development efforts are underway to make sure the technology meets the growing quality requirements. Jowat, the adhesives specialist from Detmold, supports that development with its know-how acquired over many years, an optimum service, and with a brand new, fully certified set of adhesives.


The right answer for every need
The new adhesives are certified according to EN 15425:2017 and their composition, characteristics, and processing parameters are specifically tailored to the requirements of load-bearing glulam applications. They can be used for fingerjointing as well as for laminating, offer the choice of assembly times between 10 and 60 minutes, and for the first time facilitate an assembly-pressing time ratio of 1:1. Industrial users can therefore optimise their processes by choosing the product best-suited for their needs. A simple change of adhesive, for instance, can help increase their production capacity or alternatively improve process reliability without the need for major investments.


Clear benefits: PUR
Compared with other adhesive systems for the manufacture of load-bearing timber components, polyurethane adhesives provide several advantages in the manufacturing process and quality of the end product because of their characteristics. They are completely free of formaldehyde and require significantly lower application amounts due to a solids content of 100 %. Depending on the formulation, the prepolymers cure at room temperature already within a very short time and are colourless, with no discernible glue line. The adhesives from the Jowapur® series are processed as a one-component system, making mixing, pot life, and adhesive remnants from production obsolete. The limited foaming can help prevent the lams from sticking together when they are temporarily stacked on top of each other or placed next to each other, and therefore considerably reduces the cleaning effort.
The Jowapur® prepolymers are reinforced with fibres that increase the bond strength and prevent the assemblies from sliding apart in the manufacturing process and while the adhesive is curing. Due to optimised flow properties, these adhesives are ideal for contactless application systems in fingerjointing units.


Impressive constructions
From Jowat’s point of view, glulam will continue to become more and more significant in future – a development that should be accelerated with optimised adhesives. “Building with engineered timber brings only advantages,” says Ralph Kirst, responsible for load-bearing glulam business development at Jowat SE. “Furthermore, adhesive bonding facilitates the manufacture of timber constructions in less time and at lower costs. Entire buildings can be prefabricated in mass production and assembled on site.” In light of these advantages, chances are more and more property developers will start using engineered timber. Not only does it make sense from an economic and ecological point of view – wood stores CO2 and helps fight against climate change. Glulam also allows for virtually limitless possibilities in modern architecture, as is demonstrated by the eye-catching design of Jowat’s “House of Technology” in Detmold or the BUGA Wood Pavilion in Heilbronn.

İndirmeler

Jowapur® 681.xx.PDFAdhesive Portfolio for the Wood Industry.PDF

Diğer Uygulamalar