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Lars Rune Lundbladh

Per Ove Öhman

Helene Derand

Ove &Ouml;hman

Hans Martin

Per Ove &Ouml;hman

Olle Larsson

A method for increasing the yield of functional microchannel structures per microfluidic device in the manufacturing of microfluidic devices each of which comprises a plurality of enclosed microchannel structures, said manufacturing comprising the manufacture of a microfluidic device which comprises enclosed microchannel structures by joining a substrate surface I of a first generally planar plastic substrate I to a substrate surface II of a second generally planar substrate II via a bonding material.

Microfluidic device and its manufacture

The invention relates to a matrix suitable for use in the replication of a plastic element having a positive microstructure, comprising a first wear-resistant layer that is supported by a carrier element, wherein the matrix comprises a heating means for supplying electrical heat energy through the wear-resistant layer or carrier element. The invention further relates to a plastic element producing machine and a method for the manufacture of a plastic element having a surface with a positive microstructure.

Matrix and method of producing said matrix

A method of producing a plastic product having a microstructured surface ( ), utilizing an arrangement for moulding plastic products. Said arrangement has at least two mould parts ( ) movable towards and away from each other, a predetermined volume of a viscous polymerizable plastic material ( ) being supplied to a cavity formed between the mould parts, after which polymerization of the plastic material occurs. After said polymerization of the plastic material ( &prime;), the mould parts are caused to move apart from each other thereby allowing removal of a finished plastic product the outer shape of which conforms to the shape of the cavity produced by the mould parts. Said viscous polymerizable plastic material ( ) is supplied to the cavity ( ) around a hole ( ) pertaining to the finished plastic product, and said viscous plastic material is distributed in a direction from said hole ( ) towards the peripheral edge area of the plastic product.

Method of producing a plastic product and an arrangement for moulding plastic products utilised therefor

Method for the manufacturing of a mould body and a mould body manufactured according to the method

The invention relates to a method of producing a matrix suitable for use in a plastic element-producing machine, a matrix produced in accordance with the method and use of such a matrix to form a plastic element. One side of the matrix is provided with a negative microstructure which is replicated in plastic material to form a positive microstructure on a plastic element, wherewith the matrix can be produced by applying a layer of material to the positive microstructure side of a master. The positive microstructure side of the master has a thin wear-resistant layer which serves as a first wear surface, wherewith said layer will present irregularities which correspond essentially to the microstructure, and wherein at least said irregularities are filled-in with a plastic composite so as to form a carrier element for supporting the first wear layer. The layer can further be provided with means for supplying heat energy to said matrix.

Matrix, method of producing and using the matrix and machine including the matrix

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Täby, Sweden

Lars Rune Lundbladh