紫外線照射架橋による弾性接着剤の流動性制御方法

Japanese Patent JP4119430

B2

A melt-flow controlling method for elastomer by uv irradiation for use in semiconductor packages by ultraviolet irradiation, in which a coated polymer composition is crosslinked by ultraviolet irradiation after a coating process of the polymer composition in producing the elastic adhesives. In producing the elastic adhesives for use as the thermal stress relief layer in semiconductor packages, the inventive method comprises irradiating the polymer composition with ultraviolet light of a 100-500 nm wavelength in order to control the flowability and crosslinking degree of the coated polymer composition. Thus, according to the present invention, a heating furnace is not used such that energy consumption can be reduced. Also, curing can be achieved in a short time so as to increase productivity, and the crosslinking degree is easily controlled by changing the ultraviolet dose as compared to the thermal crossliking process. Furthermore, an installation area of ultraviolet irradiation equipment is smaller than the heating furnace, and little or no epoxy reactive groups participate in the crosslinking reaction upon photo-polymerization so that the resulting film product has an excellent storage stability and thus a long life span.

JPH0263725	METHOD FOR ASSEMBLING CARBON FIBER REINFORCED PLASTIC MEMBER
JP2003160621	MODIFIED OLEFIN-BASED COPOLYMER
JP3287726	METHOD AND APPARATUS FOR PRODUCING FRP JOINT

Kim, Tae Sun
Mon, Hyuk-so
Lee, John-Kuru

JP2004545006A

July 16, 2008

October 18, 2002

Click for automatic bibliography generation  

LG CABLE LTD.

B29C65/52; C09J7/38; C09J4/06; C09J5/00; C09J109/02; C09J125/12; C09J133/08; C09J133/20; C09J201/00; H01L21/52

JP2002201442A

Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Ryo Hashimoto
Tetsuya Kazama

Previous Patent: JPS4119429

Next Patent: MANAGEMENT SYSTEM FOR ONE-DIMENSIONAL ARRAY