NOVELTY - An adhesive composition comprises 1-50 pts. wt. crosslinking agent and 0.3-3 pts. wt. of photoinitiator with respect to 100 pts. wt. ethylene-( alpha )-olefin type copolymer. The crystal melting peak temperature of the composition obtained by differential scanning calorimetry is 30-80 degrees C.    USE - Adhesive composition is used for transparent sealing material used in optical apparatus laminated material for solar cell module and organic electroluminescent element (all claimed), organic thin film and dye sensitizing or organic electroluminescent element. Uses include but are not limited to smartphone, tablet, personal computer, game machine, television, car-navigation system and touchscreen.    ADVANTAGE - The adhesive composition has excellent cutting processability when processed to match the shape of the adherend, normal temperature long-term storage stability, low-temperature meltability, level difference absorbability after bonding, heat-and-moisture resistance, light resistance, low dielectric characteristics and metal corrosion resistance. The transparent sealing material having smooth finishing without producing space or gaps and without damage at the time of adhesion or attachment, is provided.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) transparent sealing material formed from the adhesive composition;    (2) transparent sealing film laminated material, which has a protective film laminated on the surfaces of a transparent sealing material;    (3) laminated material for optical apparatus, which has an optical structural component laminated on the surface of a sealing material;    (4) solar cell module, which has optical apparatus structural component chosen from photovoltaic cell, back surface protection panel and surface protection panel, laminated on the surface of a transparent sealing material;    (5) organic electroluminescent element, which consists of optical apparatus structural component chosen from surface protection substrate, organic electroluminescent element and back surface protection substrate, laminated on the surface of the transparent sealing material; and    (6) manufacture of laminated material for an optical apparatus, which involves heat-bonding an optical apparatus structural component 80 degrees C or less on surface of a transparent sealing material and irradiating active energy ray on transparent sealing material from the optical apparatus structural component side for hardening.